CN112136477A

CN112136477A - Combine harvester

Info

Publication number: CN112136477A
Application number: CN202010580119.6A
Authority: CN
Inventors: 山内一树; 征矢保; 松本健; 安东良将; 池田太
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2019-06-27
Filing date: 2020-06-23
Publication date: 2020-12-29
Also published as: KR20210001941A

Abstract

The invention provides a combine harvester. The combine harvester is provided with a cutting part capable of cutting seven rows of planted grain stalks at the front part of a travelling machine body, wherein the position of the cutting part in the left-right direction of the right outer end part of a cutting operation area is deviated to the outside of the right side than the position of the transverse outer end part of a travelling device on the right side, the position of the cutting part in the left-right direction of the left outer end part of the cutting operation area is deviated to the outside of the left side than the position of the transverse outer end part of a travelling device on the left side, and the cutting part is formed in a way that the transverse outer end part of the travelling device on the right side is positioned in the left-right width of a grain stalk introducing path at the right end of seven grain stalk introducing paths, and the transverse outer end part of the travelling device on the left side. Thus, the efficiency of harvesting work can be improved without requiring complicated work, and the lateral width of the harvesting part can be prevented from becoming too large, and the harvester can be used for transportation.

Description

Combine harvester

Technical Field

The invention relates to a combine harvester, wherein a cutting part capable of cutting a plurality of rows of standing grain stalks is arranged at the front part of a running machine body.

Background

< background art 1>

In the combine harvester, the combine harvester has the following structure: seven grain-straw introduction paths are formed by dividing the grain-straw into a plurality of grain dividers, and all of the planted grain-straw in seven rows is cut by a cutting device, and the cut grain-straw is conveyed backward (see, for example, patent document 1). In such a seven-row harvesting combine harvester, the width of the harvesting section in the left-right direction of the harvesting work area is large, and the position of the lateral outer end of the crawler travel device provided in the travel machine body is set to a position that is largely inward of the lateral end of the harvesting work area.

Patent document 1: japanese patent application laid-open No. 2010-4841

In the above-described conventional structure, although it is advantageous that the seven rows of planted straw can be harvested simultaneously, and the working efficiency is improved, the width of the harvesting portion in the left-right direction is a large width that greatly exceeds the lateral width of the traveling machine body. As a result, there are some disadvantages: for example, the combine harvester cannot be mounted on the bed of a truck, cannot be transported by a truck, and requires a large space for storage in a warehouse or the like. Therefore, it is conceivable to take measures such as removing a part of the devices in the cutting section or changing the posture of a part of the devices to store them. However, in this configuration, complicated operations such as separately managing the detached apparatuses and switching the postures to return to the original state are required.

< background art 2>

In the combine harvester, the combine harvester has the following structure: the grain straw guiding-in path is divided into seven or more rows by a plurality of grain dividers, for example, the vertical grain straw planted in all the rows is cut by a cutting device, and the cut grain straw is conveyed backwards. In this type of combine harvester, a straw raising device for raising the standing straw in each row is provided in the front portion of the harvesting portion, and conventionally, a plurality of straw raising devices are all provided in a posture extending straight in the vertical direction in a front view (see, for example, patent document 2).

Patent document 2: japanese laid-open patent publication No. 2012 and 85550

Recently, however, it has become desirable to utilize combine harvesters for nighttime harvesting operations. Therefore, it is necessary to provide a headlight in the front of the cutting section so that the cutting operation state of the front portion of the machine body can be confirmed even at night.

In order to meet such a demand, a structure may be considered in which headlamps are provided on both the left and right sides of a plurality of raising devices. However, when this structure is applied to the above-described conventional structure, since all of the plurality of stalk raising devices are provided in a posture extending straight in the vertical direction in a front view, the headlight is placed in a state in which the headlight projects laterally outward from the machine body. As a result, the lateral width of the cutting portion may be increased. The attachment to be added to the front portion of the cutout portion is not limited to the headlight, and may be provided with a direction indicator, a vehicle width lamp, or the like.

Disclosure of Invention

In view of the background art 1, a first aspect of the present invention is to expect a combine harvester capable of harvesting seven rows of planted straw simultaneously to achieve an improvement in harvesting work efficiency and having a compact harvesting part.

In contrast to the background art 2, the second aspect of the present invention is desired to be compact by suppressing the lateral width of the harvesting portion from increasing even when an attachment to be added to the lateral side of the straw raising device located at the front end portion of the machine body is provided.

In order to achieve the above object, the present invention provides a combine harvester, comprising: left and right traveling devices; a traveling machine body on which the left and right traveling devices are installed; a cutting part which is arranged at the front part of the traveling machine body and can cut seven rows of planted vertical grain stalks; the cutting part is provided with: a plurality of grain dividers which are arranged at intervals in the left-right direction and are divided to form seven grain and straw guide-in paths; seven grain stalk lifting devices which are respectively arranged corresponding to each grain stalk guide-in path in all the grain stalk guide-in paths and lift up the planted grain stalks; a harvesting device for cutting the planted vertical straw introduced into all the straw introduction paths; a conveying device which merges the harvested grain stalks in the harvesting width direction and conveys the grain stalks backward; the position of the cutting section in the left-right direction at the right outer end of the cutting work area is substantially the same as the position of the lateral outer end of the right travel device, or is shifted to the right and outside from the position of the lateral outer end of the right traveling device, and the position in the left-right direction of the left outer end of the cutting work area is substantially the same as the position of the lateral outer end of the left traveling device, or is shifted to the left outside from the position of the lateral outer end of the left traveling device, and the cutting unit is configured such that the lateral outer end of the right traveling device is positioned within the lateral width of the grain stalk introducing path at the right end among the seven grain stalk introducing paths, and the lateral outer end part of the left running device is positioned in the left and right width of the grain and stalk guide-in path at the left end of the seven grain and stalk guide-in paths.

According to the present invention, the left and right traveling devices travel in a state of falling in the region where the cutting operation is performed by the cutting unit, although the traveling devices travel at the position where the cutting operation is performed by the cutting unit, and therefore, the non-harvested grain stalks are not rolled by mistake by the traveling devices, and the cutting operation can be performed satisfactorily.

Further, the harvesting unit is configured to harvest seven rows of planted straw, and the lateral outer end of the right traveling device is located within the lateral width of the right straw introduction path at the right end, and the lateral outer end of the left traveling device is located within the lateral width of the left straw introduction path at the left end.

Thus, it is possible to provide a combine harvester capable of harvesting seven rows of planted straw simultaneously to improve the efficiency of harvesting work and having a compact harvesting part.

In the present invention, it is preferable that the position in the left-right direction of the right outer end of the cutting work area is shifted to the right outside from the position of the lateral outer end of the right running gear, and the position in the left-right direction of the left outer end of the cutting work area is shifted to the left outside from the position of the lateral outer end of the left running gear.

According to this configuration, since the cutting work area is in a state of protruding laterally outward beyond the position of the lateral outer end portion of the traveling device on each of the right and left sides, a sufficient space (margin) can be obtained from the position of the outer end of the traveling device to the non-work area of the cutting portion on both the left and right sides. As a result, for example, even when the vehicle is driven in a meandering manner to correct the direction during traveling, there is less risk of the traveling device damaging the non-working area.

In the present invention, it is preferable that a position in the left-right direction of the lateral outer end portion on the one side in the left-right direction of the travel machine body is located at substantially the same position as a position of the lateral outer end portion on the one side in the left-right direction of the cutting work area, or is shifted outward in the left-right direction from the position of the lateral outer end portion on the one side in the left-right direction of the cutting work area.

According to this configuration, in the combine harvester, the driver is often provided on one side in the left-right direction of the front portion of the travel machine body. Further, since the standing grain stalks are planted near the ridge, when the cutting work is performed with the ridge on one side in the left-right direction of the traveling machine body, the traveling machine body can be operated as close to the ridge as possible while avoiding the contact between the outer end portion in the left-right direction of the cutting work area and the ridge.

In the present invention, it is preferable that the grain stalk raising device includes a plurality of raising claws which move upward in a laterally protruding state to raise the grain stalks, and two adjacent grain stalk raising devices are provided in a state in which raising action regions of the respective raising claws overlap with each other in a state in which the raising claws face each other.

According to this structure, since the raising action regions of the raising claws of the two grain stalk raising devices overlap, the two grain stalk raising devices can be arranged in a state of being approached in the left-right direction, accordingly. Thus, the total installation width in the left-right direction of the seven stalk-supporting devices can be made narrower than in the case where the supporting regions do not overlap.

In order to achieve the second aspect of the present invention, there is provided a combine harvester, comprising: left and right traveling devices; a traveling machine body on which the left and right traveling devices are installed; a cutting part which is arranged at the front part of the traveling machine body and can cut a plurality of rows of vertical planted grain stalks; the cutting part is provided with: a plurality of grain dividers which are arranged at intervals in the left-right direction and are divided to form seven or more than seven grain and straw guide-in paths; a plurality of grain stalk lifting devices which are respectively arranged corresponding to each grain stalk introduction path in all the grain stalk introduction paths and lift the planted grain stalks; a cutting device for cutting the vertical planted straw in a plurality of rows guided into all the straw guide paths; a conveying device which merges the plurality of rows of cut grain stalks in the cutting width direction and conveys the grain stalks backward; the grain stalk lifter located at the end sides of the left and right end parts among the grain lifter devices is arranged in an inclined posture inclining towards the left and right sides and inwards.

According to the present invention, the grain stalk lifter located on the end portion sides of the left and right end portions among the plurality of grain lifter devices provided corresponding to the cutting row is in an inclined posture in which the grain stalk lifter is inclined inward in the left and right directions. By tilting the grain and stalk supporting device at the end portion side in this manner, a portion corresponding to the upper portion side of the grain and stalk supporting device in the transverse width of the harvesting portion is made narrower than a portion corresponding to the lower portion side.

Therefore, an empty space is formed in the upper part of the grain and stalk lifter at the end part, and thus the attachment to be added is disposed at this place, so that the increase of the lateral width of the cutting part can be avoided.

Therefore, even if an attachment is provided to be added to the lateral side of the straw raising device located at the front end of the machine body, the cutting portion can be made compact while suppressing the lateral width thereof from increasing.

In the present invention, it is preferable that headlamps are provided at laterally outer positions on the upper side of the grain stalk lifter on the end side.

According to this configuration, by providing the headlight at the front portion of the machine body, the cutting work position can be efficiently illuminated when the cutting work is performed at night, and the night work can be performed satisfactorily.

In the present invention, it is preferable that a side cover is provided below the headlight, and the side cover is provided so as to be positioned on a left-right inner side with respect to a left-right outer end position of the headlight.

According to this configuration, since the electric wiring, the lamp, and the like are attached to the front portion inside, the headlight needs a predetermined width in the lateral direction and may have a projecting shape, and the side cover located on the lower side not only covers the lateral side of the stalk lifter on the end portion side but also can be provided more inward in the left and right direction than the position of the outer end in the left and right direction of the headlight. The side cover that is located the downside is higher with the frequency of planting and founding the contact of millet stalk, through being located left right side direction inboard, can avoid with plant and found millet stalk contact and avoid the damage.

In the present invention, it is preferable that the grain stalk raising device includes a plurality of raising claws that move upward in a laterally protruding state to raise the grain stalks, and among the plurality of grain stalk raising devices, the grain stalk raising device on the end portion side and another grain stalk raising device adjacent to each other in a state where the raising claws face each other are provided in a state where the raising regions of the raising claws overlap each other at least on the upper portion side of the raising path.

According to this configuration, since the raising action regions of the raising claws of the two grain stalk raising devices overlap on the upper side of the raising path, the upper portions of the two grain stalk raising devices can be arranged in a state of being approached to each other in the left-right direction, and further compaction in the left-right direction is facilitated.

Drawings

Fig. 1 is an overall side view of the combine harvester of embodiment 1.

Fig. 2 is an overall plan view of the combine harvester according to embodiment 1.

Fig. 3 is a side view of the cutting section according to embodiment 1.

Fig. 4 is a front view of the combine harvester of embodiment 1.

Fig. 5 is a diagram showing a transmission structure according to embodiment 1.

Fig. 6 is a front view showing a conveyor and a driver in embodiment 1.

Fig. 7 is a plan view showing the transport apparatus according to embodiment 1.

Fig. 8 is a front view showing a relationship between the crawler travel device according to embodiment 1 and the cutting work area.

Fig. 9 is a plan view showing a branching transmission structure according to embodiment 1.

Fig. 10 is a vertical sectional side view showing a branching transmission structure according to embodiment 1.

Fig. 11 is a partially cut side view showing a cutout portion of the branching transmission structure according to embodiment 1.

Fig. 12 is a vertical cross-sectional view showing a conveying state of the cut straw in the vicinity of the bending portion in embodiment 1.

Fig. 13 is a vertical cross-sectional side view of a second intermediate conveyance unit according to embodiment 1.

Fig. 14 is a plan view showing a state of transporting the ear tip side straw by the transporting device according to embodiment 1.

Fig. 15 is a plan view showing a state of transporting the roots of the grain and straw on the plant root side of the transporting apparatus according to embodiment 1.

Fig. 16 is a plan view of the first intermediate conveyance unit according to embodiment 1.

Fig. 17 is a front view of the first intermediate conveyance unit according to embodiment 1.

Fig. 18 is a plan view of a fourth intermediate conveyance unit according to embodiment 1.

Fig. 19 is a front view of a fourth intermediate conveyance unit according to embodiment 1.

Fig. 20 is a plan view showing a state of ear tip guiding at a confluence of the second intermediate conveyance unit and the third intermediate conveyance unit in embodiment 1.

Fig. 21 is a plan view showing a plant root guiding state at the confluence of the second intermediate conveyance unit and the third intermediate conveyance unit in embodiment 1.

Fig. 22 is a sectional view showing a conveying state of the grain straw in embodiment 1.

Fig. 23 is an overall side view of the combine harvester of embodiment 2.

Fig. 24 is an overall plan view of the combine harvester according to embodiment 2.

Fig. 25 is a side view of the cutout portion in embodiment 2.

Fig. 26 is a front view of the combine harvester of embodiment 2.

Fig. 27 is a diagram showing a transmission structure according to embodiment 2.

Fig. 28 is a front view showing the conveyor and the driver in embodiment 2.

Fig. 29 is a plan view showing a transport apparatus according to embodiment 2.

Fig. 30 is a front view showing a relationship between the crawler travel device according to embodiment 2 and the cutting work area.

Fig. 31 is a plan view showing a branching transmission structure according to embodiment 2.

Fig. 32 is a vertical sectional side view showing a branching transmission structure according to embodiment 2.

Fig. 33 is a partially cut side view showing a cutout portion of the branching transmission structure according to embodiment 2.

Fig. 34 is a vertical cross-sectional view showing a conveying state of the cut straw in the vicinity of the bending portion in embodiment 2.

Fig. 35 is a vertical cross-sectional side view of a second intermediate conveyance unit according to embodiment 2.

Fig. 36 is a plan view showing a state of transporting the ear tip side stalks by the transporting device according to embodiment 2.

Fig. 37 is a plan view showing a state of transporting the roots of the grain stalks by the plant root side of the transporting apparatus according to embodiment 2.

Fig. 38 is a plan view of the first intermediate conveyance unit according to embodiment 2.

Fig. 39 is a front view of the first intermediate conveyance unit according to embodiment 2.

Fig. 40 is a plan view of a fourth intermediate conveyance unit according to embodiment 2.

Fig. 41 is a front view of a fourth intermediate conveyance unit according to embodiment 2.

Fig. 42 is a front view showing a state of ear tip guiding at a confluence of the second intermediate conveyance unit and the third intermediate conveyance unit in embodiment 2.

Fig. 43 is a plan view showing a plant root guiding state at the confluence of the second intermediate conveyance unit and the third intermediate conveyance unit in embodiment 2.

Fig. 44 is a sectional view showing a conveying state of the grain straw in embodiment 2.

Description of the reference numerals

< embodiment 1>

1 traveling body

2 cutting part

4R, 4L running gear

12 divider

13 grain stalk lifting device

14 cutting device

15 conveying device

32 lifting claw

Lateral outer end of ER traveling body

Right outer end of KR

KL left outer end

Lateral outer end of running gear on right side of TR

Lateral outer end of travel device on left side of TL

Q1-Q7 grain stalk guide-in path

W cutting operation area

< embodiment 2>

1 traveling body

2 cutting part

12 divider

13. 13R, 13L grain stalk lifting device

14 cutting device

15 conveying device

32 lifting claw

150R, 150L head lamp

153 side cover

M-raised region of action

Q1-Q7 grain stalk guide-in path

Detailed Description

< embodiment 1>

Hereinafter, embodiment 1 of the combine harvester of the present invention will be described with reference to the drawings.

In this embodiment, a direction indicated by reference numeral "F" in fig. 1 and 2 is a front side of the machine body, and a direction indicated by reference numeral "B" in fig. 1 and 2 is a rear side of the machine body. The direction indicated by the reference symbol "L" in fig. 2 is the left side of the body, and the direction indicated by the reference symbol "R" in fig. 2 is the right side of the body.

[ integral constitution ]

As shown in fig. 1 and 2, the combine harvester of the present invention includes a traveling machine body 1 and a harvesting unit 2 capable of harvesting seven rows of standing straws. The cutting unit 2 is connected to the travel machine body 1 so as to be swingable up and down about a horizontal axis P1, and is configured to be drivable up and down by the up-and-down hydraulic cylinder 3.

The traveling machine body 1 includes left and right

crawler travel devices

4R and 4L as traveling devices, and an operator's part 5 is provided on the right side (one side in the left-right direction) of the front part of the machine body. A threshing device 6 for threshing the grain stalks cut by the cutting unit 2 and a grain tank 7 for storing the grains obtained by the threshing process are provided behind the cab unit 5 in a state of being arranged in parallel in the lateral direction of the machine body. The cab 5 is covered with a cab 8. Although not shown, the threshing device 6 performs threshing processing on the ear tip side in the threshing chamber while pinching and conveying the roots of the harvested grain stalks conveyed from the harvesting unit 2 by the threshing feeding chain 9, and performs sorting processing into grains and dust by a sorting unit provided at the lower part of the threshing chamber. The grains are stored in a grain box 7, and dust is discharged to the outside of the machine. A grain discharging device 10 which can discharge grains stored in the grain box 7 to the outside and a shredding device 11 which shreds discharged straws after threshing processing and discharges them to the outside are provided.

The cutting unit 2 includes: a plurality of (eight) grain dividers 12 that are provided at intervals in the left-right direction and that divide into seven straw introduction paths Q1 to Q7; seven grain stalk lifters 13 (hereinafter, simply referred to as "lifters") which are provided corresponding to each of all the grain stalk introduction paths Q1 to Q7, respectively, and which lift the planted grain stalks; a pusher-type harvesting device 14 for cutting the planted straw introduced into all the straw introduction paths Q1 to Q7; and a conveying device 15 for converging the harvested grain stalks in the harvesting width direction and conveying the converged grain stalks to the rear.

Two grain dividers 12 of the eight grain dividers 12 which are positioned at the outermost side of the machine body in the transverse direction divide standing grain stalks into cutting objects and non-objects, guide the cutting objects to a lifting path adjacent to the grain dividers 12, and guide the non-objects to the outer side of the lifting path in the transverse direction. The other crop dividers 12 divide the crop stalks planted in the two planting rows toward both lateral sides of the crop divider 12 and guide the stalks into the raising paths on both lateral sides of the crop divider 12. The grain and straw introduction paths Q1 to Q7 have a width defined by the dividers 12 on the left and right sides, and are used for introducing a row of standing grain and straw.

[ frame structure of harvesting part ]

Next, the frame structure of the cutting section 2 will be explained.

As shown in fig. 1, a cylindrical harvesting support frame 16 is provided in the front-rear direction, which supports the entire harvesting unit 2 so as to be able to rise and fall with respect to the travel machine body 1. The lateral pivot support portion 17 provided on the base end side of the rear upper portion of the cutting support frame 16 is supported on the body-side support base 18 so as to be rotatable about the lateral axis P1. The cutting support frame 16 extends from the support table 18 toward the front lower side of the machine body.

As shown in fig. 2 and 9, the cutting support frame 16 is provided in a state of being positioned at a position corresponding to the rear of the fifth grain stalk introduction path Q5 from the right end among the seven grain stalk introduction paths Q1 to Q7. As described later, the fifth straw introduction path Q5 is a position for conveying a row of cut straws.

A cylindrical lower-side lateral frame 19 extending in the right-left direction, i.e., the harvesting width direction, is connected to the front end of the harvesting support frame 16. As shown in fig. 1, at both ends in the transverse width direction of the machine body of the lower lateral frame 19, left and right forward and backward straw dividing frames 20 are connected so as to extend forward of the machine body. A square-tube-shaped cutting blade support frame 21 extending in the transverse width direction of the machine body is connected to the middle portion of the center between the front and rear portions of the seedling dividing frames 20 extending at the left and right ends. The cutting device 14 is supported by the cutting blade support frame 21.

As shown in fig. 8 and 9, the lower lateral frame 19 includes an intermediate frame 22 integrally provided at the distal end of the cutting support frame 16, a left frame 23 connected to the left portion of the intermediate frame 22 via a flange, and a right frame 24 connected to the right portion of the intermediate frame 22 via a flange.

A plurality of the seedling dividing frames 20 are provided at intervals between the seedling dividing frames 20 at the left and right ends. The rear end portions of the center seedling-dividing frames 20 are connected to the cutter support frame 21, and the center seedling-dividing frames 20 are cantilevered toward the front of the machine body. The total number of the seedling dividing frames 20 is eight, and a seedling divider 12 is provided at the front end of each seedling dividing frame 20.

As shown in fig. 1, a cylindrical left vertical direction frame 25 extends upward from the left end of the lower lateral frame 19. Although not shown, a vertical frame is also provided extending upward from the right end of the lower lateral frame 19. An upper lateral frame 26 (see fig. 3) is connected between an upper end of the left vertically oriented frame 25 and an upper end of the right vertically oriented frame. The upper-side cross frame 26 extends in the left-right direction across the upper end portions of the respective seven raising devices 13, and is joined to the upper end portion of each raising device 13.

The seven raising devices 13 are each connected on the upper side to the upper lateral frame 26 and on the lower side to the dividing frame 20. Thus, each of the raising devices 13 functions as a frame member that connects the upper-side cross frame 26 and the seedling-dividing frame 20 in the connected state.

[ positional relationship between the running gear and the cutting work position ]

As shown in fig. 4, 6, and 8, the harvesting unit 2 is configured such that the laterally outer end TL of the left crawler travel device 4L is positioned within the width of the straw introduction path Q7 at the left end of the seven straw introduction paths Q1 to Q7, and the laterally outer end TR of the right crawler travel device 4R is positioned within the width of the straw introduction path Q1 at the right end of the seven straw introduction paths Q1 to Q7.

Specifically, the left outer end KL of the work area W where the cutting operation is performed by the cutting device 14 is offset to the left outside with respect to the lateral outer end TL of the left crawler travel device 4L. Further, right outer end portion KR of cutting work area W is offset to the right outward with respect to lateral outer end portion TR of right crawler travel device 4R.

By configuring the harvesting unit 2 as described above, the left and right

crawler travel devices

4R and 4L can perform the harvesting operation satisfactorily without rolling over the uncut grain stalks. As shown in fig. 4, the position in the left-right direction of the right end portion (an example of one side in the left-right direction) of the traveling machine body 1 is substantially the same as the position in the left-right direction of the outer end portion KR on the right side of the cutting work area W.

The positional relationship between the traveling machine body 1 and the cutting work position will be described. As shown in fig. 4, a position ER in the left-right direction of the right lateral outer end of traveling machine body 1 is substantially the same as a position KR at which the right lateral outer end of working range W is cut. The right lateral outer end of the traveling machine body 1 is an outer end of an armrest 8a for riding and landing provided in a fixed state on the lateral side of the cab 8. The mirror 8b provided in the cab 8 mainly projects outward in a normal use state, but can swing at a fulcrum portion at a base end portion and can be housed inside an outer end portion of the armrest 8 a.

The position EL in the left-right direction of the left lateral outer end of the traveling machine body 1 is shifted to the left-right direction inner side from the position KL of the left lateral outer end of the cutting work area W. The left lateral outer end of the traveling machine body 1 is an outer end of an outer case 6a (see fig. 2) of the threshing device 6.

[ holding up device ]

As shown in fig. 1 and 3, the raising device 13 is provided in a rearwardly inclined standing posture in which the lower end side is located on the front side of the machine body and the upper end side is located on the rear side of the machine body. As shown in fig. 4, the raising device 13 is provided with an endless rotating chain 31 inside the raising case 27 serving also as a frame, the endless rotating chain 31 is wound around the drive sprocket 28 and the tension sprocket 29 positioned on the upper side and the driven sprocket 30 positioned on the lower side, respectively, and a plurality of raising claws 32 are provided on the endless rotating chain 31 at predetermined intervals in the longitudinal direction. The raising claw 32 is supported by the endless rotating chain 31 so as to be capable of changing its posture between the standing posture and the lying posture.

As shown in fig. 5, a jack-up drive shaft 33 extending in the left-right direction is provided across the upper portions of the seven jack-up devices 13. The power from the raised drive shaft 33 is transmitted to the drive sprocket 28 via a relay drive shaft 35 provided in a relay drive case 34. Although not shown, the raised drive shaft 33 has a hexagonal cross section, and the raised drive shaft 33 transmits power in a polygonal fitting state.

The raising device 13 sets any one of the vertical movement paths on the left and right sides of the endless rotating chain 31 as a raising action path, and sets the vertical movement path on the opposite side as a non-action return path. Although not shown, a guide plate for guiding the raising claw 32 to rise is provided in the raising operation path at a position where the endless rotating chain 31 passes.

As shown in fig. 4, in the raising devices 13 other than the fifth raising device 13 from the right side among the plurality of raising devices 13, the right and left adjacent raising devices 13 are arranged with the raising claws 32 facing each other. The fifth raising device 13 from the right side is disposed in a state where the raising claw 32 protrudes to the left side and rises.

In the raising device 13, the raising claw 32 projecting laterally moves upward while exerting a combing action on the grain stalks in the raising path, and when the raising claw 32 projecting laterally reaches the terminating end of the raising path, the raising claw 32 projecting laterally separates from the grain stalks and is accommodated in the raising housing 27, and descends in the inactive return path to return to the raising path side. Thus, each of the raising devices 13 raises the standing straw guided to the raising path by the raising claw 32 that moves upward.

Two grain-stalk lifter devices 13 adjacent in a state where the holding-up claws 32 face each other are disposed in a state where the holding-up regions M of the respective holding-up claws 32 overlap. That is, as shown in fig. 4, the positions of the raising action regions M of the right and left raising claws 32 facing each other are set to: the rise region M overlaps by a set amount M in the left-right direction. Further, the rotational phases of the opposing left and right raising claws 32 are set to: the right and left raising claws 32 move upward with a slight vertical shift. By configuring the support operating regions M so as to overlap in the left-right direction, the entire width of the cutout portion 2 in the left-right direction is reduced as much as possible, and the width of the cutout portion 2 in the left-right direction is set to a width that falls within the left-right width of the vehicle compartment so that the entire body can be mounted on the vehicle compartment of the truck.

[ cutting device ]

The harvesting device 14 is formed in a horizontally long shape extending over the entire width in the left-right direction (corresponding to the harvesting width direction) so as to function on all the planted grain stalks of the harvesting target row (seven rows), and the harvesting device 14 is constituted by a pusher-type cutter of a known structure. The entire length of the cutting device 14 in the left-right direction corresponds to the cutting work area W of the cutting unit 2 in the left-right direction.

As shown in fig. 8, the position of the left outer end KL of the cutting work area W of the cutting unit 2 in the left-right direction is shifted to the left outside from the position of the lateral outer end TL of the left crawler travel device 4L. The position of right outer end KR in the left-right direction in cutting work area W is shifted to the right outward side from the position of lateral outer end TR of right crawler travel device 4R.

As shown in fig. 8, the harvesting device 14 is provided with two sets of pusher-type cutters 36 divided into two parts and arranged in parallel in the left-right direction, and left-right cutter driving mechanisms 37 for driving the two sets of cutters 36, respectively. The left and right cutters 36 each include a plurality of fixed blades arranged in parallel in the left-right direction and a plurality of movable blades arranged in parallel in sliding contact with the upper side of the fixed blades, and this will not be described in detail. The movable blade is driven to reciprocate right and left in the transverse width direction of the machine body by the knife drive mechanism 37 acting on the movable blade operating body 38 provided in the vicinity of the outer sides of the right and left cutting blades 36.

The cutting blade drive mechanism 37 includes an arm 40, a interlinking lever 41, and a drive rotating body 42, the arm 40 includes an operation roller 39 engaged with the movable blade operation body 38 at one end, one end side of the interlinking lever 41 is connected to the other end side of the arm 40, and the drive rotating body 42 is connected to the other end side of the interlinking lever 41 and functions as a crank arm. The rotary driving force of the driving rotator 42 is converted into reciprocating power to drive the movable blade in a reciprocating manner in the left and right directions.

[ transporting device ]

Next, the conveying device 15 will be explained.

As shown in fig. 6, the conveying device 15 includes seven raking sections 43 for raking the roots of the grain stalks cut by the cutting device 14 rearward, a first intermediate conveying section 44 for conveying the two rows of cut grain stalks from the first row and the second row from the right rearward, a second intermediate conveying section 45 for conveying the two rows of cut grain stalks from the third row and the fourth row from the right rearward to a merging position where they merge with the first intermediate conveying section 44, a third intermediate conveying section 46 for conveying the one row of cut grain stalks from the fifth row from the right rearward, a fourth intermediate conveying section 47 for conveying the two rows of cut grain stalks from the sixth row and the seventh row from the right rearward to a merging position where they merge with the first intermediate conveying section 44, and a threshing conveying section 48 for conveying the merged seven rows of cut grain stalks to the starting end of the feeding chain 9 (see fig. 5). The third intermediate conveyance section 46 is configured to convey the harvested straws to a merging position where they merge with the fourth intermediate conveyance section 47.

As shown in fig. 6 and 9, the raking part 43 includes a rotary type roller 43A (a raking rotary body having a substantially star-shaped outer shape) for raking the grain and straw, and a ring-shaped rotary belt 43B having a protrusion, the rotary type roller 43A for raking the grain and straw is arranged in parallel and meshed with and rotated in the left-right direction of the machine body in the vicinity of the upper side of the cutter 14, and the ring-shaped rotary belt 43B having the protrusion is located above the roller 43A. The six raking parts 43 excluding the fifth raking part 43 from the right end are configured to gather the grain and straw cut in the right and left rows in two rows and rake the grain and straw in the rear direction. The fifth raking part 43 from the right end is configured to rake the grain stalks cut in the row of the fifth row from the right side rearward.

The ballast 43A of the six raking sections 43 (hereinafter, referred to as "raking sections for two rows 43") except for the fifth raking section 43 (hereinafter, referred to as "raking section for one row 43") from the right end are provided in a state of being juxtaposed in the left-right direction and being engaged with each other. The ballast 43A of the raking portion 43 for one row is provided in a state of being juxtaposed in the left-right direction with respect to the ballast 43A of the raking portion for two rows from the right end and meshing with each other. All the compactors 43A are provided at the same height and in a state of being arranged in parallel to the left and right, and five compactors 43A before the fifth from the right end are engaged with each other, and the fifth compacter 43A is separated from the sixth compacter 43A.

As shown in fig. 5, 7 and 9, the first intermediate conveyance unit 44 is provided with a first row root holding and conveying device 50 for holding and conveying the row root side portion of the harvested grain stalks and a first spike locking and conveying device 51 for locking and conveying the spike tip side portion of the harvested grain stalks. As shown in fig. 5, the first string holding and conveying device 50 includes an endless rotating chain 53 wound around a plurality of sprockets 52. The first spike locking conveyor 51 includes an endless rotating chain 56 with locking projections 55 wound around a plurality of sprockets 54. The locking projection 55 is supported so as to be able to undulate and swing, and is locked so as to maintain an upright posture in the transport operation region. The structure of the locking projection 55 is the same in each spike locking and conveying device described below.

The second intermediate conveyance section 45 is provided with a second root holding and conveying device 57 for holding and conveying the root side portion of the harvested grain stalks and a second spike tip locking and conveying device 58 for locking and conveying the spike tip side of the harvested grain stalks. As shown in fig. 5, the second planting root holding and conveying device 57 includes an endless rotating chain 60 wound around a plurality of sprockets 59. The second spike locking conveyor 58 includes an endless rotating chain 63 with locking projections 62 wound around a plurality of sprockets 61.

The third intermediate conveyance unit 46 is provided with a third root holding and conveying device 64 for holding and conveying the root side portion of the harvested grain stalks and a third spike-tip locking and conveying device 65 for locking and conveying the spike-tip side portion of the harvested grain stalks. As shown in fig. 5 and 12, the third root holding and conveying device 64 includes an endless rotating chain 67 wound around a plurality of sprockets 66. The third spike locking conveyor 65 includes an endless rotating chain 70 with locking projections 69 wound around a plurality of sprockets 68.

The fourth intermediate conveyance unit 47 is provided with a fourth root holding and conveying device 71 for holding and conveying the root side portion of the harvested grain stalks and a fourth spike-tip locking and conveying device 72 for locking and conveying the spike-tip side portion of the harvested grain stalks. The fourth root gripping and conveying device 71 includes an endless rotating chain 74 wound around a plurality of sprockets 73. The fourth spike locking conveyor 72 includes an endless rotating chain 77 with locking projections 76 wound around a plurality of sprockets 75.

As shown in fig. 1 and 5, the supply conveyor 48 includes a threshing-depth conveyor 78 and a delivery feeder 79, the threshing-depth conveyor 78 holds the roots of seven rows of harvested grain stalks conveyed and merged by the first intermediate conveyor 44, the second intermediate conveyor 45, the third intermediate conveyor 46, and the fourth intermediate conveyor 47 and conveys the roots toward the threshing and feeding chain 9, and the delivery feeder 79 delivers the harvested grain stalks from the threshing-depth conveyor 78 to the leading end of the threshing and feeding chain 9. As shown in fig. 5, both the threshing-depth conveyor 78 and the delivery and supply device 79 include an endless rotating chain 81 wound around a plurality of sprockets 80. Although not shown, a holding guide rail is provided so as to face the endless rotating chain 81, and the roots of the harvested grain stalks are held and conveyed by the endless rotating chain 81 and the holding guide rail.

Although not shown, the conveying device 78 for threshing depth is swingably supported with the conveying start end side as a fulcrum so that the conveying end side moves in the stalk length direction. By moving the conveyance terminating end side, the position of the harvested grain stalks received from the merging position can be changed in the stalk length direction (up-down direction) to change and adjust the depth of penetration of the harvested grain stalks into the threshing device 6.

[ concerning the position of confluence of the first intermediate conveyance section and the second intermediate conveyance section ]

As shown in fig. 15 and 21, the first root gripping and conveying device 50 in the first intermediate conveying section 44 includes a first gripping guide 82 facing the endless rotating chain 53 in a region from the conveyance starting end to the merging position where the first root gripping and conveying device and the second root gripping and conveying device 57 in the second intermediate conveying section 45 merge. The roots of the cut grain stalks are clamped by the annular rotating chain 53 and the first clamping guide rail 82 and conveyed backwards. As shown in fig. 15, the second plant root holding and conveying device 57 also includes a second holding guide 83 facing the endless rotating chain 60, and the plant roots from which the grain stalks are cut are held between the endless rotating chain 60 and the second holding guide 83 and conveyed rearward.

The first and second root gripping and conveying

devices

50 and 57 are configured such that the grain and stalk conveying paths face each other, and the cut grain and stalk conveyed by the second root gripping and conveying device 57 are merged into the conveying path of the first root gripping and conveying device 50 in a state where the grain and stalk conveying paths intersect.

The first root gripping and conveying device 50 is provided with a first support frame body 84, and the first support frame body 84 supports the first gripping guide rail 82 so as to be capable of pressing and moving in a retracting manner with respect to the endless rotating chain 53. The second root grip conveyor 57 is provided with a second support frame 85, and the second support frame 85 supports the second grip rail 83 so as to be capable of pressing against and retreating from the endless rotating chain 60. Each of the support frames 84 and 85 is formed by bending a plate body into a substantially U shape and is provided in a state of extending along the corresponding endless rotating

chain

53 or 60. As shown in fig. 22, coil springs 86 for pressing and biasing the holding rails 82 and 83 are provided inside the respective

support frame bodies

84 and 85. Each

support frame body

84, 85 is fixed to a support member 87, and the support member 87 is fixedly supported by the seedling dividing frame 20.

As shown in fig. 21, the position of the clamping end of the first clamping rail 82 of the first root-gripping conveyer 50 is set upstream in the conveying direction from the merging position of grains. Further, auxiliary conveyance guides 88 and 89 are provided at positions on the upstream side of the path with respect to the endless rotating chain 53 and at positions on the downstream side of the path with respect to the conveyance of the first string nipping and conveying device 50 from the nipping end position of the first nipping rail 82.

As shown in fig. 15, 21, and 22, an upper auxiliary conveyance guide 88 formed of a plate spring is provided above the path with respect to the endless rotating chain 53. Further, a lower auxiliary conveying guide 89 formed of a piano wire is provided in a state of being positioned on the lower side of the path with respect to the endless rotating chain 53.

One end of the upper auxiliary conveying guide 88 and the lower auxiliary conveying guide 89 on the conveying upstream side is supported by the second support frame 85 corresponding to the second root pinching and conveying device 57, and the other end on the conveying downstream side extends in a cantilever shape toward the grain straw conveying path.

The straw holding region of the first holding rail 82 of the first root holding and conveying device 50 partially overlaps the conveying action regions of the upper auxiliary conveying guide 88 and the lower auxiliary conveying guide 89 in the straw conveying direction. Thus, the first row root holding and conveying device 50 can satisfactorily convey the harvested cereal straws in two rows, the first row and the second row from the right side, and the harvested cereal straws conveyed by the second row root holding and conveying device 57 can be conveyed to the rear side while satisfactorily joining without being hindered by the first holding guide rail 82.

As shown in fig. 21, a rear holding rail 90 is provided in a state of extending in a cantilever manner from the second support frame 85 of the second plant root holding and conveying device 57 in the conveying path after the confluence of the cut grain stalks in the first plant root holding and conveying device 50. The roots of the cut rice straws are clamped by the annular rotating chain 53 and the rear clamping guide rail 90 and conveyed backwards. Further, an upper auxiliary conveying guide 91 formed of a leaf spring and a lower auxiliary conveying guide 92 formed of a piano wire are provided at the same position as the joining position, and the joined cut grain stalks are delivered to the threshing depth conveyor 78.

As shown in fig. 15 and 22, the first root gripping and conveying device 50 is provided with a root gripping support frame 93 made of a round pipe material in a state of extending long along the path of the endless rotating chain 53. The support frame 93 for clamping the roots is provided with a back rail 94 for receiving and supporting from the back in the clamping operation region of the endless rotating chain 53. Although not shown, the front end of the root holding support frame 93 is supported by the right-hand branch frame 20, and the rear end of the root holding support frame 93 is supported by a branch transmission case 95 extending from the harvesting support frame 16.

As shown in fig. 15 and 22, a plant root side guide member 96 which is slidably in contact with the return path of the endless rotating chain 53 from the outer surface side is provided in a state of being integrally connected to the longitudinal intermediate portion of the plant root pinching support frame 93. The root-side guide member 96 is formed in a substantially band plate shape, has tapered front and rear ends, and has a gentle arc shape in contact with the endless rotating chain 53. The return path of the endless rotating chain 53 is slidably guided by the root-side guide member 96 so as to move away from the cab 8.

[ first spike locking conveyor ]

The first ear tip locking and conveying device 51 is configured to rotate by the endless rotating chain 56, and to lock the ear tip side of the harvested grain stalks by the locking projections 55 in the standing posture and convey the grain stalks to the left rear side. An ear tip sliding contact guide plate 97 is provided above the first ear tip locking and conveying device 51, and the ear tip sliding contact guide plate 97 receives and guides the ear tip part of the harvested straw in sliding contact.

The first half of the first ear tip locking and conveying device 51 locks and conveys the ear tip side from which the grain stalks are harvested in the first row and the second row from the right side. From the middle of the conveyance, the harvested straws conveyed by the second intermediate conveyance section 45 are joined together and the locking conveyance is performed in this state. Then, in the latter half of the conveyance, the harvested cereal straws conveyed by the third intermediate conveyance section 46 and the fourth intermediate conveyance section 47 join together, so that all of the harvested cereal straws in the seven rows join together. Thereafter, the seven rows of harvested straws are held and conveyed and guided toward the inlet of the threshing device 6.

In this way, the first spike locking conveyor 51 has a conveying path that is long in the front-rear direction, and passes in front of the driver section 5. Therefore, as shown in fig. 3, 6, 7, and 11, the first spike locking and conveying device 51 passes in front of the driver section 5, bends toward the rear of the machine body, and extends toward the rear of the machine body.

The first spike locking and conveying device 51 has a conveying path for the grain and straw set on the left side and a return path for the return without conveying action set on the right side. In the transport path and the return path, the first spike locking transport device 51 passes in front of the driver 5, is bent toward the rear of the machine body, and extends toward the rear of the machine body.

As shown in fig. 11 and 22, the first spike locking conveyor 51 is provided with a conveying guide 98 for guiding the sliding movement of the endless rotating chain 56. The front end side of the conveying guide rail 98 is supported by the seedling-dividing frame 20, and the rear end side of the conveying guide rail 98 is supported by the lateral pivot support portion 17 near the swing fulcrum. The endless rotating chain 56 is guided to slide on the conveying path by a conveying guide 98. At this time, the locking projection 55 is locked by the rising guide member 99 so that the locking projection 55 is in the rising posture. Fig. 7 depicts the rotation locus U of the tip of the locking projection 55, and as shown in the figure, the locking projection 55 moves while keeping the standing posture in the transportation path, and locks and guides the spike tip side. As can be seen from fig. 7, the first spike locking conveyor 51 has a conveying path curved rearward at a middle portion thereof.

As shown in fig. 11 and 16, a return path guide rail 100 is provided, and the return path guide rail 100 is supported by the front end side and the rear end portion of the conveyance guide rail 98, extends along a path passing through the front of the cab 5 and curving rearward of the machine body, and is positioned on the outer peripheral side (right side) of the return path of the endless rotating chain 56. As shown in fig. 22, the return path guide 100 is formed of a plate body having a substantially L-shaped or substantially U-shaped cross section so as to guide the endless rotating chain 56 of the return path. The return path guide 100 is formed by integrally connecting four divided guide bodies 100a formed linearly in a bent state in this order to form a curved path in a plan view. When passing through the return path, the locking projection 55 is in a posture of falling down along the endless rotating chain 56.

As shown in fig. 7 and 16, the spike sliding contact guide plate 97 provided above the first spike locking conveyor 51 has a shape in which a flat plate is bent into a wave shape so that a portion that can be contacted is separated from the cab 5 so as not to interfere with the cab 8 of the cab 5 during the elevating operation of the harvesting unit 2.

The second intermediate conveying unit 45, the third intermediate conveying unit 46, and the fourth intermediate conveying unit 47 are also provided with ear tip sliding

contact guide plates

101, 102, and 103 that receive and guide the ear tip side portions of the conveyed grain stalks in sliding contact.

[ Structure of tip guide of curved part ]

An upper guide lever 104 as an upper spike guide portion is provided at a position corresponding to a bent portion of the first spike locking conveyor 51 bent rearward, and the upper guide lever 104 presses and guides a portion of the harvested straw, which is located above the locking position Z of the first spike locking conveyor 51, toward the driver portion 5.

As shown in fig. 6 and 20, the upper guide rod 104 is formed by bending a round bar into a substantially U-shape. The upstream end of the upper guide bar 104 is connected to the support frame 105 of the second intermediate conveyance unit 45 by bolts while being flattened into a flat shape. As shown in fig. 20, the longitudinal portion of the upper guide rod 104 extending in the up-down direction on the conveyance upstream side is provided in a state of passing through the receptacle 106 formed in the spike tip sliding-contact guide plate 101 of the second intermediate conveyance part 45.

As shown in fig. 7 and 20, the fourth intermediate conveyance section 47 is provided with a merging guide rod 107 serving as a merging ear tip guide section, and the merging guide rod 107 guides the ear tip side portions of the harvested stalks being conveyed to merge them into the conveyance path of the first intermediate conveyance section 44. The merging guide rod 107 is formed by bending a round bar into a substantially S shape. The end portion on the conveyance upstream side of the merging guide rod 107 is coupled to the support frame 108 of the third intermediate conveyance section 46 by a bolt.

A support bracket 109 is fixedly extended from an extension middle portion of the merging guide rod 107, and an extension side end portion of the support bracket 109 is coupled to the spike tip sliding contact guide plate 102 of the third intermediate transfer unit 46 by a bolt. The end of the upper guide rod 104 on the downstream side of conveyance is connected to the support bracket 109 by a bolt. The spike tip sliding contact guide plate 102 is supported by the support frame 108 of the third intermediate conveyance section 46. Therefore, the upper guide bar 104 is supported by the support frame 105 of the second intermediate conveyance unit 45 and the support frame 108 of the third intermediate conveyance unit 46.

A lower guide lever 110 is provided as a lower spike guide portion, and the lower guide lever 110 guides the harvested straw by pressing the position of the harvested straw that is lower than the locking position Z of the first spike locking conveyor 51 toward the driver 5. The lower guide rod 110 is formed by bending a round bar into a substantially L-shape. The end portion of the lower guide bar 110 on the conveyance upstream side is connected to the support frame 105 of the second intermediate conveyance unit 45 by a bolt in a flattened state.

The end of the lower guide rod 110 on the conveyance downstream side is integrally connected to the end of the merging guide rod 107 on the conveyance downstream side. With this configuration, the grain and straw conveyed can be smoothly joined, and bending deformation and the like are less likely to occur, compared with a case where the guide bars 107 and 110 are provided in a cantilever shape in a free state, and durability can be further improved.

[ third intermediate conveyance section ]

As shown in fig. 6, 7, 9, and 14, the third root holding and conveying device 64 in the third intermediate conveying section 46 holds roots of the harvested straws in a row of the fifth row from the right side, conveys the roots in the front-rear direction of the machine body, and merges the roots at a middle portion of the conveying path of the fourth root holding and conveying device 71.

The fourth row root holding conveyor 71 holds the row roots of the harvested straws in the sixth and seventh rows from the right side, conveys the row roots in the right-rear oblique direction, and delivers the row roots to the starting end of the threshing depth conveyor 78. The fourth ear tip locking and conveying device 72 is locked to the ear tip sides of the harvested straw in the sixth row and the seventh row from the right side, is conveyed in the right rear oblique direction, and is joined in the middle of the conveyance by the first ear tip locking and conveying device 51.

The third root holding and conveying device 64 merges the conveyed grain stalks into a middle portion of an inclined conveying path conveyed in a right rear inclined direction in the fourth root holding and conveying device 71. The third ear tip locking and conveying device 65 is locked to the ear tip side of the harvested grain stalks in the row of the fifth row from the right side, conveys the harvested grain stalks in the front-rear direction of the machine body, and merges the harvested grain stalks into the middle of the inclined transfer path conveyed in the right-rear inclined direction in the fourth ear tip locking and conveying device 72.

[ Transmission Structure ]

Next, a transmission structure of the cutting section 2 will be explained.

As shown in fig. 5, power after the output of an engine E (see fig. 1) mounted on the traveling machine body 1 is shifted is transmitted to a transverse transmission shaft 111 provided inside a pivot support portion 17 of the cutting support frame 16 by a transmission device (not shown). Power is transmitted from the transverse transmission shaft 111 through a longitudinally oriented harvesting transmission shaft 112 provided inside the harvesting support frame 16.

The power after the speed change is transmitted from the front-rear direction harvesting transmission shaft 112 to the lateral input shaft 113 provided inside the lower lateral frame 19. Power is transmitted to the harvesting device 14 through branch portions 114 provided at both side end portions of the input shaft 113.

From a branch portion 115 provided on the left side of the input shaft 113 to a longitudinal transmission shaft 116. The power is branched from the vertical transmission shaft 116 at the upper and lower middle portions thereof, and is transmitted to the fourth intermediate conveying unit 47, and the power is transmitted from the fourth intermediate conveying unit 47 to the leftmost raking unit 43. The power is transmitted to the adjacent raking parts 43 (the sixth from the right end) by the engagement of the compactors 43A.

A transverse lifting drive shaft 33 is provided across the entire width in the left-right direction along the upper side transverse frame 26, and the lifting drive shaft 33 spans the upper portion of the lifting device 13. Also, the power from the longitudinal transmission shaft 116 is transmitted to the jack-up drive shaft 33 after being shifted by the gear shift mechanism 118. Power is transmitted from the jack-up drive shaft 33 to the seven jack-up devices 13.

On the other hand, power is transmitted from the middle of the transmission of the harvesting transmission shaft 112 extending in the front-rear direction to the five raking sections 43, the first root gripping and conveying device 50, the second intermediate conveying section 45, the third intermediate conveying section 46, and the supply conveying section 48 located on the right side. The first spike locking and conveying device 51 transmits power thereto from the lateral transmission shaft 111.

Further, a first branch transmission mechanism 119 for transmitting the power branched from the cutting transmission shaft 112 to the second intermediate conveying section 45 and the third intermediate conveying section 46 is provided in a middle portion of the cutting support frame 16.

The first branch transmission 119 will be explained.

As shown in fig. 5 and 12, a first branch portion 121 having a bevel gear mechanism 120 is provided in the middle of the drive of the cutting drive shaft 112. The first branch portion 121 branches power from the harvesting drive shaft 112 to the first branch drive shaft 122. The first branch drive shaft 122 branches power from the cutting drive shaft 112 via the bevel gear mechanism 120 and extends obliquely upward in the forward direction. The first branch transmission shaft 122 is supported by a cylindrical first branch case 123 formed integrally with the cutting support frame 16. The first branch transmission shaft 122 directly drives the drive sprocket 66 of the third root gripping and conveying device 64 and the drive sprocket 68 of the third spike locking and conveying device 65 in the third intermediate conveying section 46. The power is transmitted from the third root holding conveyor 64 to the fifth raking part 43 from the right end.

As shown in fig. 5 and 13, the power is branched from the middle portion of the first branch transmission shaft 122 to the second branch transmission shaft 124. The second branch drive shaft 124 branches power from the first branch drive shaft 122 via a bevel gear mechanism 125 and extends in the lateral direction. The second branch transmission shaft 124 is supported by a cylindrical second branch case 126 (see fig. 9) formed integrally with the first branch case 123.

A third branch transmission shaft 128 that transmits power from the second branch transmission shaft 124 via a bevel gear mechanism 127 is provided. The third branch transmission shaft 128 extends obliquely forward. The third branch transmission shaft 128 is supported by a cylindrical third branch case 129 formed integrally with the second branch case 126.

The third branch transmission shaft 128 directly drives the drive sprocket 59 of the second root gripping conveyor 57 and the drive sprocket 61 of the second spike locking conveyor 58. The power is transmitted from the second root holding conveyor 57 to the fourth raking part 43 from the right end. The power is transmitted to the adjacent raking parts 43 (the third from the right end) by the engagement of the compactors 43A.

Therefore, the power transmitted to the third intermediate conveyance unit 46 via the first branch portion 121 is transmitted to the fifth raking portion 43 from the right end, and the power transmitted to the second intermediate conveyance unit 45 via the first branch portion 121 is transmitted to the fourth raking portion 43 from the right end. The roller 43A of the fifth raking part 43 from the right end and the roller 43A of the fourth raking part 43 from the right end are engaged with each other and are rotatable in an interlocking manner.

A second branch transmission mechanism 130 is provided, and the second branch transmission mechanism 130 transmits power branched from a portion of the harvest transmission shaft 112 on the transmission upstream side of the portion where the first branch transmission mechanism 119 is provided, to the first root grip conveyor 50.

The second branch transmission mechanism 130 will be explained.

As shown in fig. 5 and 10, the second branch portion 131 is provided at a position on the transmission upstream side of the position where the first branch portion 121 is provided in the cutting transmission shaft 112. The power is branched from the take-off transmission shaft 112 to the fourth branch transmission shaft 132 and the fifth branch transmission shaft 133 by the second branch portion 131. The fourth branch transmission shaft 132 is supported by the branch transmission case 140, and the power is branched from the cutting transmission shaft 112 via the bevel gear mechanism 134 and extends obliquely forward and upward. The fifth branch transmission shaft 133 branches the power from the cutting transmission shaft 112 via a bevel gear mechanism 135 and extends obliquely upward and leftward and forward.

The power is transmitted from the fourth branch transmission shaft 132 to the first string holding conveyor 50 in the first intermediate conveyor 44, and the power of the first string holding conveyor 50 is transmitted to the raking section 43 on the right end. The roller 43A of the right end raking part 43 and the roller 43A of the second raking part 43 from the right end are engaged with each other and rotated in a linked manner, and power is transmitted to the second raking part 43. Power is transmitted from the fifth branch transmission shaft 133 to the threshing depth conveyor 78 via the bevel gear mechanism 136.

[ other embodiments ]

(1) In the above-described embodiment, the position of the outer end of the cutting work area is shifted outward in the left-right direction from the position of the lateral outer end of the crawler travel device on both the left and right sides, but instead of this configuration, a configuration may be adopted in which the position in the left-right direction at which the right outer end KR of the cutting work area W is cut is located at substantially the same position as the position of the lateral outer end TR of the right crawler travel device 4R, or a configuration may be adopted in which the position in the left-right direction at which the left outer end KL of the cutting work area W is cut is located at substantially the same position as the position of the lateral outer end TL of the left crawler travel device 4L. Further, the position in the left-right direction at which the outer end of the working range W is cut may be substantially the same as the position of the lateral outer end of the traveling device on both the left and right sides.

(2) In the above-described embodiment, the position in the left-right direction of the right end portion (an example of one side in the left-right direction) of the traveling machine body 1 and the position in the left-right direction of the outer end portion KR on the right side of the cutting work area W are located substantially at the same position, but instead of this, the position ER in the left-right direction of the right end portion of the traveling machine body 1 may be located more to the right and outward than the position in the left-right direction of the outer end portion KR on the right side of the cutting work area W, or the position EL in the left-right direction of the left end portion of the traveling machine body 1 may be located more to the left and outward than the position in the left-right direction of the outer end portion KL on the left side of.

(3) In the above embodiment, the two grain stalk raising devices 13 adjacent to each other in a state where the raising claws 32 face each other are arranged in a state where the respective raising action regions M overlap, but a structure where the respective raising action regions M do not overlap may be employed.

(4) In the above embodiment, the harvesting section 2 harvests seven rows of standing grain stalks, but eight rows of standing grain stalks may be harvested, and for example, two rows of standing grain stalks may be introduced into the right-side grain stalk introduction path Q1, so long as at least seven rows can be harvested.

Industrial applicability

The present invention can be applied to a combine harvester in which a harvesting part capable of harvesting seven rows of planted straw is provided at the front of a traveling machine body.

< embodiment 2>

Hereinafter, embodiment 2 of the combine harvester according to the present invention will be described with reference to the drawings.

In this embodiment, a direction indicated by reference numeral "F" in fig. 23 and 24 is a front side of the machine body, and a direction indicated by reference numeral "B" in fig. 23 and 24 is a rear side of the machine body. The direction indicated by the reference symbol "L" in fig. 24 is the left side of the body, and the direction indicated by the reference symbol "R" in fig. 24 is the right side of the body.

[ integral constitution ]

As shown in fig. 23 and 24, the combine harvester of the present invention includes a traveling machine body 1 and a harvesting unit 2 capable of harvesting seven rows of planted stalks. The cutting unit 2 is connected to the travel machine body 1 so as to be swingable up and down about a horizontal axis P1, and is configured to be drivable up and down by the up-and-down hydraulic cylinder 3.

The traveling machine body 1 includes left and right

crawler travel devices

[ frame structure of harvesting part ]

Next, the frame structure of the cutting section 2 will be explained.

As shown in fig. 23, a cylindrical harvesting support frame 16 is provided in the front-rear direction, which supports the entire harvesting unit 2 so as to be able to move up and down with respect to the travel machine body 1. The lateral pivot support portion 17 provided on the base end side of the rear upper portion of the cutting support frame 16 is supported on the body-side support base 18 so as to be rotatable about the lateral axis P1. The cutting support frame 16 extends from the support table 18 toward the front lower side of the machine body.

As shown in fig. 24 and 31, the cutting support frame 16 is provided in a state of being positioned at a position corresponding to the rear of the fifth grain stalk introduction path Q5 from the right end among the seven grain stalk introduction paths Q1 to Q7. As described later, the fifth straw introduction path Q5 is a position for conveying a row of cut straws.

A cylindrical lower-side lateral frame 19 extending in the right-left direction, i.e., the harvesting width direction, is connected to the front end of the harvesting support frame 16. As shown in fig. 23, at both ends in the transverse width direction of the machine body of the lower lateral frame 19, left and right seedling-dividing frames 20 facing forward and backward are connected so as to extend forward of the machine body. A square-tube-shaped cutting blade support frame 21 extending in the transverse width direction of the machine body is connected to the middle portion of the center between the front and rear portions of the seedling dividing frames 20 extending at the left and right ends. The cutting device 14 is supported by the cutting blade support frame 21.

As shown in fig. 30 and 31, the lower lateral frame 19 includes an intermediate frame 22 integrally provided at the distal end of the cutting support frame 16, a left frame 23 connected to the left portion of the intermediate frame 22 via a flange, and a right frame 24 connected to the right portion of the intermediate frame 22 via a flange.

As shown in fig. 23, a cylindrical left vertical direction frame 25 extends upward from the left end of the lower lateral frame 19. Although not shown, a vertical frame is also provided extending upward from the right end of the lower lateral frame 19. An upper lateral frame 26 (see fig. 25) is connected between an upper end of the left vertically oriented frame 25 and an upper end of the right vertically oriented frame. The upper-side cross frame 26 extends in the left-right direction across the upper end portions of the respective seven raising devices 13, and is joined to the upper end portion of each raising device 13.

As shown in fig. 26, 28, and 30, the harvesting unit 2 is configured such that the laterally outer end TL of the left crawler travel device 4L is positioned within the width of the straw introduction path Q7 at the left end of the seven straw introduction paths Q1 to Q7, and the laterally outer end TR of the right crawler travel device 4R is positioned within the width of the straw introduction path Q1 at the right end of the seven straw introduction paths Q1 to Q7.

By configuring the harvesting unit 2 as described above, the left and right

crawler travel devices

4R and 4L can perform the harvesting operation satisfactorily without rolling over the uncut grain stalks. As shown in fig. 26, the position in the left-right direction of the right end portion (an example of one side in the left-right direction) of the traveling machine body 1 is substantially the same as the position in the left-right direction of the outer end portion KR on the right side of the cutting work area W.

The positional relationship between the traveling machine body 1 and the cutting work position will be described. As shown in fig. 26, a position ER in the left-right direction of the right lateral outer end of traveling machine body 1 is substantially the same as a position KR at which the right lateral outer end of working range W is cut. The right lateral outer end of the traveling machine body 1 is an outer end of an armrest 8a for riding and landing provided in a fixed state on the lateral side of the cab 8. The mirror 8b provided in the cab 8 mainly projects outward in a normal use state, but can swing at a fulcrum portion at a base end portion and can be housed inside an outer end portion of the armrest 8 a.

The position EL in the left-right direction of the left lateral outer end of the traveling machine body 1 is shifted to the left-right direction inner side from the position KL of the left lateral outer end of the cutting work area W. The left lateral outer end of the traveling machine body 1 is an outer end of an outer case 6a (see fig. 24) of the threshing device 6.

[ holding up device ]

As shown in fig. 23 and 25, the raising device 13 is provided in a rearwardly inclined standing posture in which the lower end side is located on the front side of the machine body and the upper end side is located on the rear side of the machine body. As shown in fig. 24 and 26, the raising device 13 is provided with an endless rotating chain 31 inside the raising case 27 which also serves as a frame, the endless rotating chain 31 is wound around the drive sprocket 28 and the tension sprocket 29 which are located on the upper side and the driven sprocket 30 which is located on the lower side, and a plurality of raising claws 32 are provided on the endless rotating chain 31 at predetermined intervals in the longitudinal direction. The raising claw 32 is supported by the endless rotating chain 31 so as to be capable of changing its posture between the standing posture and the lying posture.

As shown in fig. 27, a jack-up drive shaft 33 extending in the left-right direction is provided across the upper portions of the seven jack-up devices 13. The power from the raised drive shaft 33 is transmitted to the drive sprocket 28 via a relay drive shaft 35 provided in a relay drive case 34. Although not shown, the raised drive shaft 33 has a hexagonal cross section, and the raised drive shaft 33 transmits power in a polygonal fitting state.

The raising device 13 sets any one of the vertical movement paths on the left and right sides of the endless rotating chain 31 as a raising action path, and sets the vertical movement path on the opposite side as a non-action return path. Although not shown, a guide plate for guiding the raising claw 32 to rise is provided in the raising operation path at a position where the endless rotating chain 31 passes. When guided and raised, the raising claw 32 is in an attitude in which the raising surface is orthogonal to the direction in which the endless rotating chain 31 is stretched.

As shown in fig. 26, in the lifting devices 13 other than the fifth lifting device 13 from the right among the seven lifting devices 13, the right and left adjacent lifting devices 13 are arranged in a state where the lifting claws 32 face each other. The fifth raising device 13 from the right side is disposed in a state where the raising claw 32 protrudes to the left side and rises.

As shown in fig. 26, of the seven raising devices 13, the grain stalk raising devices 13R, 13L located on the end side at both right and left ends are set in an inclined posture inclining inward in the right and left direction. The grain stalk raising devices 13R and 13L on the end portion sides are supported by the raising housing 27 so that the position of the drive sprocket 28 on the upper side is positioned further to the left and right inner sides in front view than when installed in the upright posture.

As shown in fig. 26, the grain and stalk raising devices 13R and 13L at the end portion sides are in an attitude inclined inward by a set angle θ in the left-right direction with respect to the adjacent raising device 13. In the grain stalk raising devices 13R and 13L on the end portion side, the raising claw 32 is guided and raised, and the raising operation surface is also in an attitude orthogonal to the stretching direction of the endless rotating chain 31. As a result, as shown in fig. 26, the raising surfaces of the raising claws 32 of the other raising devices 13 are in a horizontal posture, and the raising surfaces of the raising claws 32 of the grain stalk raising devices 13R, 13L at the end portions are inclined at a set angle θ with respect to the horizontal direction.

Furthermore, headlamps 150R, 150L are provided at upper-side laterally outer positions of the raising devices 13R, 13L at the end side. That is, the left headlamp 150L is provided at a laterally outer portion of the upper left side of the lifter 13L at the left end, and the right headlamp 150R is provided at a laterally outer portion of the upper right side of the lifter 13R at the right end.

The headlamps 150R and 150L are internally provided with light emitting lamps, electric wiring, and the like, and a light projecting portion 151 is provided on the front side. The portion other than the light projection portion 151 is covered with an outer case 152. Since the light emitting lamp and the circuit member are provided, the outer case 152 has a shape slightly protruding outward.

A side cover 153 is provided below the headlights 150R and 150L so as not to expose the transmission structure and the conveyor 15 and the like inside the raising devices 13R and 13L at the end portions to the outside. As shown in fig. 26, the side covers 153 are provided at positions located on the left and right inner sides of the left and right outer end positions of the headlamps 150R and 150L. Thus, the side cover 153 is less likely to be damaged by contact with the planted straw.

Two grain-stalk lifter devices 13 adjacent in a state where the holding-up claws 32 face each other are disposed in a state where the holding-up regions M of the respective holding-up claws 32 overlap. That is, as shown in fig. 26, the positions of the raising action regions M of the right and left raising claws 32 facing each other are set to: the rise region M overlaps by a set amount M in the left-right direction. Further, the rotational phases of the opposing left and right raising claws 32 are set to: the right and left raising claws 32 move upward with a slight vertical shift. By configuring the support operating regions M so as to overlap in the left-right direction, the entire width of the cutout portion 2 in the left-right direction is reduced as much as possible, and the width of the cutout portion 2 in the left-right direction is set to a width that falls within the left-right width of the vehicle compartment, for example, so that the entire body can be mounted on the vehicle compartment of a truck.

The end-side raising devices 13R and 13L and the raising devices 13 adjacent thereto are also provided in a state in which the raising action regions M of the respective raising claws 32 overlap, but since the end-side grain stalk raising devices 13R and 13L are in a posture in which they are inclined inward in the left-right direction, the overlap amount of the raising action regions M increases upward. That is, the overlapping amount of the supporting regions M on the lower side is the same as the overlapping amount (set amount) of the other supporting devices 13, and the overlapping amount is larger toward the upper side.

[ cutting device ]

As shown in fig. 30, the position of the left outer end KL of the cutting work area W of the cutting unit 2 in the left-right direction is shifted to the left outside from the position of the lateral outer end TL of the left crawler travel device 4L. The position of right outer end KR in the left-right direction in cutting work area W is shifted to the right outward side from the position of lateral outer end TR of right crawler travel device 4R.

As shown in fig. 30, the harvesting device 14 is provided with two sets of pusher-type cutters 36 divided into two parts and arranged in parallel in the left-right direction, and left-right cutter driving mechanisms 37 for driving the two sets of cutters 36, respectively. The left and right cutters 36 each include a plurality of fixed blades arranged in parallel in the left-right direction and a plurality of movable blades arranged in parallel in sliding contact with the upper side of the fixed blades, and this will not be described in detail. The movable blade is driven to reciprocate right and left in the transverse width direction of the machine body by the knife drive mechanism 37 acting on the movable blade operating body 38 provided in the vicinity of the outer sides of the right and left cutting blades 36.

[ transporting device ]

Next, the conveying device 15 will be explained.

As shown in fig. 28, the conveying device 15 includes seven raking sections 43 for raking the roots of the grain stalks cut by the cutting device 14 rearward, a first intermediate conveying section 44 for conveying the two rows of cut grain stalks from the first row and the second row from the right rearward, a second intermediate conveying section 45 for conveying the two rows of cut grain stalks from the third row and the fourth row from the right rearward to a merging position where they merge with the first intermediate conveying section 44, a third intermediate conveying section 46 for conveying the one row of cut grain stalks from the fifth row from the right rearward, a fourth intermediate conveying section 47 for conveying the two rows of cut grain stalks from the sixth row and the seventh row from the right rearward to a merging position where they merge with the first intermediate conveying section 44, and a feeding and conveying section 48 for conveying the merged seven rows of cut grain stalks to the starting end of the feeding chain 9 (see fig. 27). The third intermediate conveyance section 46 is configured to convey the harvested straws to a merging position where they merge with the fourth intermediate conveyance section 47.

As shown in fig. 28 and 31, the raking part 43 includes a rotary type roller 43A (a raking rotary body having a substantially star-shaped outer shape) for raking the grain and straw, and a ring-shaped rotary belt 43B having a protrusion, the rotary type roller 43A for raking the grain and straw is arranged in parallel and meshed with and rotated in the left-right direction of the machine body in the vicinity of the upper side of the cutter 14, and the ring-shaped rotary belt 43B having the protrusion is located above the roller 43A. The six raking parts 43 excluding the fifth raking part 43 from the right end are configured to gather the grain and straw cut in the right and left rows in two rows and rake the grain and straw in the rear direction. The fifth raking part 43 from the right end is configured to rake the grain stalks cut in the row of the fifth row from the right side rearward.

As shown in fig. 27, 29 and 31, the first intermediate transfer unit 44 is provided with a first row root holding and transferring device 50 for holding and transferring the row root side portion of the harvested grain stalks and a first spike locking and transferring device 51 for locking and transferring the spike tip side of the harvested grain stalks. As shown in fig. 27, the first string holding and conveying device 50 includes an endless rotating chain 53 wound around a plurality of sprockets 52. The first spike locking conveyor 51 includes an endless rotating chain 56 with locking projections 55 wound around a plurality of sprockets 54. The locking projection 55 is supported so as to be able to undulate and swing, and is locked so as to maintain an upright posture in the transport operation region. The structure of the locking projection 55 is the same in each spike locking and conveying device described below.

The second intermediate conveyance section 45 is provided with a second root holding and conveying device 57 for holding and conveying the root side portion of the harvested grain stalks and a second spike tip locking and conveying device 58 for locking and conveying the spike tip side of the harvested grain stalks. As shown in fig. 27, the second planting root gripping and conveying device 57 includes an endless rotating chain 60 wound around a plurality of sprockets 59. The second spike locking conveyor 58 includes an endless rotating chain 63 with locking projections 62 wound around a plurality of sprockets 61.

The third intermediate conveyance unit 46 is provided with a third root holding and conveying device 64 for holding and conveying the root side portion of the harvested grain stalks and a third spike-tip locking and conveying device 65 for locking and conveying the spike-tip side portion of the harvested grain stalks. As shown in fig. 27 and 34, the third root holding and conveying device 64 includes an endless rotating chain 67 wound around a plurality of sprockets 66. The third spike locking conveyor 65 includes an endless rotating chain 70 with locking projections 69 wound around a plurality of sprockets 68.

As shown in fig. 23 and 27, the supply conveyor 48 includes a threshing-depth conveyor 78 and a delivery feeder 79, the threshing-depth conveyor 78 holds the roots of seven rows of harvested grain stalks conveyed and merged by the first intermediate conveyor 44, the second intermediate conveyor 45, the third intermediate conveyor 46, and the fourth intermediate conveyor 47 and conveys the roots toward the threshing and feeding chain 9, and the delivery feeder 79 delivers the harvested grain stalks from the threshing-depth conveyor 78 to the leading end of the threshing and feeding chain 9. As shown in fig. 27, both the threshing-depth conveying device 78 and the delivery and supply device 79 include an endless rotating chain 81 wound around a plurality of sprockets 80. Although not shown, a holding guide rail is provided so as to face the endless rotating chain 81, and the roots of the harvested grain stalks are held and conveyed by the endless rotating chain 81 and the holding guide rail.

As shown in fig. 37 and 43, the first root gripping and conveying device 50 in the first intermediate conveying section 44 includes a first gripping guide 82 facing the endless rotating chain 53 in a region from the conveyance starting end to the merging position where the first root gripping and conveying device merges with the second root gripping and conveying device 57 in the second intermediate conveying section 45. The roots of the cut grain stalks are clamped by the annular rotating chain 53 and the first clamping guide rail 82 and conveyed backwards. As shown in fig. 37, the second plant root holding and conveying device 57 also includes a second holding guide 83 facing the endless rotating chain 60, and the plant roots from which the grain stalks are cut are held between the endless rotating chain 60 and the second holding guide 83 and conveyed rearward.

The first and second root gripping and conveying

devices

chain

53 or 60. As shown in fig. 44, coil springs 86 for pressing and biasing the holding rails 82 and 83 are provided inside the respective

support frame bodies

84 and 85. Each

support frame body

As shown in fig. 43, the position of the clamping end of the first clamping rail 82 of the first root-gripping conveyor 50 is set upstream in the conveying direction from the merging position of grains. Further, auxiliary conveyance guides 88 and 89 are provided at positions on the upstream side of the path with respect to the endless rotating chain 53 and at positions on the downstream side of the path with respect to the conveyance of the first string nipping and conveying device 50 from the nipping end position of the first nipping rail 82.

As shown in fig. 37, 43, and 44, an upper auxiliary conveyance guide 88 formed of a plate spring is provided above the path with respect to the endless rotating chain 53. Further, a lower auxiliary conveying guide 89 formed of a piano wire is provided in a state of being positioned on the lower side of the path with respect to the endless rotating chain 53.

As shown in fig. 43, a rear holding rail 90 is provided in a state of extending in a cantilever manner from the second support frame 85 of the second plant root holding and conveying device 57 in the conveying path after the confluence of the cut grain stalks in the first plant root holding and conveying device 50. The roots of the cut rice straws are clamped by the annular rotating chain 53 and the rear clamping guide rail 90 and conveyed backwards. Further, an upper auxiliary conveying guide 91 formed of a leaf spring and a lower auxiliary conveying guide 92 formed of a piano wire are provided at the same position as the joining position, and the joined cut grain stalks are delivered to the threshing depth conveyor 78.

As shown in fig. 37 and 44, the first root gripping and conveying device 50 is provided with a root gripping support frame 93 made of a round pipe material in a state of extending long along the path of the endless rotating chain 53. The support frame 93 for clamping the roots is provided with a back rail 94 for receiving and supporting from the back in the clamping operation region of the endless rotating chain 53. Although not shown, the front end of the root holding support frame 93 is supported by the right-hand branch frame 20, and the rear end of the root holding support frame 93 is supported by a branch transmission case 95 extending from the harvesting support frame 16.

As shown in fig. 37 and 44, a plant root side guide member 96 which is slidably in contact with the return path of the endless rotating chain 53 from the outer surface side is provided in a state of being integrally connected to the longitudinal intermediate portion of the plant root pinching support frame 93. The root-side guide member 96 is formed in a substantially band plate shape, has tapered front and rear ends, and has a gentle arc shape in contact with the endless rotating chain 53. The return path of the endless rotating chain 53 is slidably guided by the root-side guide member 96 so as to move away from the cab 8.

[ first spike locking conveyor ]

In this way, the first spike locking conveyor 51 has a conveying path that is long in the front-rear direction, and passes in front of the driver section 5. Therefore, as shown in fig. 25, 28, 29, and 33, the first spike locking and conveying device 51 passes in front of the driver section 5, bends toward the rear of the machine body, and extends toward the rear of the machine body.

As shown in fig. 33 and 44, the first spike locking conveyor 51 is provided with a conveying guide 98 for guiding the sliding movement of the endless rotating chain 56. The front end side of the conveying guide rail 98 is supported by the seedling-dividing frame 20, and the rear end side of the conveying guide rail 98 is supported by the lateral pivot support portion 17 near the swing fulcrum. The endless rotating chain 56 is guided to slide on the conveying path by a conveying guide 98. At this time, the locking projection 55 is locked by the rising guide member 99 so that the locking projection 55 is in the rising posture. Fig. 29 depicts the rotation locus U of the tip of the locking projection 55, and as shown in the figure, the locking projection 55 moves while keeping the standing posture in the transportation path, and locks and guides the spike tip side. As can be seen from fig. 29, the first spike locking conveyor 51 has a conveying path that curves rearward at a middle portion thereof.

As shown in fig. 33 and 38, a return path guide rail 100 is provided, and the return path guide rail 100 is supported by the front end side and the rear end portion of the conveyance guide rail 98, extends along a path passing through the front of the cab 5 and curving rearward of the machine body, and is positioned on the outer peripheral side (right side) of the endless rotating chain 56 of the return path. As shown in fig. 44, the return path guide rail 100 is formed of a plate body having a substantially L-shaped or substantially U-shaped cross section so as to guide the endless rotating chain 56 of the return path. The return path guide 100 is formed by integrally connecting four divided guide bodies 100a formed linearly in a bent state in this order to form a curved path in a plan view. When passing through the return path, the locking projection 55 is in a posture of falling down along the endless rotating chain 56.

As shown in fig. 29 and 38, the spike sliding contact guide plate 97 provided above the first spike locking conveyor 51 has a shape in which a flat plate is bent in a wave shape so that a portion that can be contacted is separated from the cab 5 so as not to interfere with the cab 8 of the cab 5 during the elevating operation of the harvesting unit 2.

contact guide plates

[ Structure of tip guide of curved part ]

As shown in fig. 28 and 42, the upper guide rod 104 is formed by bending a round bar into a substantially U-shape. The upstream end of the upper guide bar 104 is connected to the support frame 105 of the second intermediate conveyance unit 45 by bolts while being flattened into a flat shape. As shown in fig. 42, the longitudinal portion of the upper guide rod 104 extending in the up-down direction on the conveyance upstream side is provided in a state of passing through the receptacle 106 formed in the spike tip sliding-contact guide plate 101 of the second intermediate conveyance part 45.

As shown in fig. 29 and 42, the fourth intermediate conveyance section 47 is provided with a merging guide rod 107 serving as a merging ear tip guide section, and the merging guide rod 107 guides the ear tip side portions of the harvested stalks conveyed to merge them into the conveyance path of the first intermediate conveyance section 44. The merging guide rod 107 is formed by bending a round bar into a substantially S shape. The end portion on the conveyance upstream side of the merging guide rod 107 is coupled to the support frame 108 of the third intermediate conveyance section 46 by a bolt.

[ third intermediate conveyance section ]

As shown in fig. 28, 29, 31, and 36, the third root holding and conveying device 64 in the third intermediate conveying section 46 holds roots of harvested grain stalks in a row of the fifth row from the right side, conveys the roots in the front-rear direction of the machine body, and merges at a middle portion of the conveying path of the fourth root holding and conveying device 71.

[ Transmission Structure ]

Next, a transmission structure of the cutting section 2 will be explained.

As shown in fig. 27, power after the output of an engine E (see fig. 23) mounted on the traveling machine body 1 is shifted is transmitted to a transverse transmission shaft 111 provided inside the pivot support portion 17 of the cutting support frame 16 by a transmission device (not shown). Power is transmitted from the transverse transmission shaft 111 through a longitudinally oriented harvesting transmission shaft 112 provided inside the harvesting support frame 16.

The first branch transmission 119 will be explained.

As shown in fig. 27 and 34, a first branch portion 121 having a bevel gear mechanism 120 is provided in the middle of the drive of the cutting drive shaft 112. The first branch portion 121 branches power from the harvesting drive shaft 112 to the first branch drive shaft 122. The first branch drive shaft 122 branches power from the cutting drive shaft 112 via the bevel gear mechanism 120 and extends obliquely upward in the forward direction. The first branch transmission shaft 122 is supported by a cylindrical first branch case 123 formed integrally with the cutting support frame 16. The first branch transmission shaft 122 directly drives the drive sprocket 66 of the third root gripping and conveying device 64 and the drive sprocket 68 of the third spike locking and conveying device 65 in the third intermediate conveying section 46. The power is transmitted from the third root holding conveyor 64 to the fifth raking part 43 from the right end.

As shown in fig. 27 and 35, the power is branched from the middle portion of the first branch transmission shaft 122 to the second branch transmission shaft 124. The second branch drive shaft 124 branches power from the first branch drive shaft 122 via a bevel gear mechanism 125 and extends in the lateral direction. The second branch transmission shaft 124 is supported by a cylindrical second branch case 126 (see fig. 31) formed integrally with the first branch case 123.

The second branch transmission mechanism 130 will be explained.

As shown in fig. 27 and 32, the second branch portion 131 is provided at a position on the transmission upstream side of the position where the first branch portion 121 is provided in the cutting transmission shaft 112. The power is branched from the take-off transmission shaft 112 to the fourth branch transmission shaft 132 and the fifth branch transmission shaft 133 by the second branch portion 131. The fourth branch transmission shaft 132 is supported by the branch transmission case 140, and the power is branched from the cutting transmission shaft 112 via the bevel gear mechanism 134 and extends obliquely forward and upward. The fifth branch transmission shaft 133 branches the power from the cutting transmission shaft 112 via a bevel gear mechanism 135 and extends obliquely upward and leftward and forward.

[ other embodiments ]

(1) In the above embodiment, the side cover 153 is provided below the headlights 150R and 150L, and the side cover 153 is provided so as to be positioned more inward in the left-right direction than the outer end positions in the left-right direction of the headlights 150R and 150L, but instead of this configuration, the side cover 153 may be configured to protrude outward than the headlights 150R and 150L. The structure including the side cover 153 may not be employed.

(2) In the above embodiment, the structure in which the grain and stalk raising devices 13R, 13L on the end portion side and the grain and stalk raising devices 13 adjacent in a state in which the raising claws 32 face each other overlap the raising operation region in the entire region of the raising path is adopted, but instead of this structure, a structure in which the raising operation regions overlap only on the upper portion side of the raising path and do not overlap on the lower portion side may be adopted.

(3) In the above embodiment, the headlamps 150R and 150L are provided at the laterally outer positions on the upper sides of the end portion side straw raising devices 13R and 13L, but a direction indicator, a vehicle width, and the like may be provided instead of the headlamps 150R and 150L, or a plurality of auxiliary machines may be provided in combination of them. In addition, the support members may be arranged in a state where the support regions do not overlap.

(4) In the above embodiment, the structure in which the raising surfaces of the raising claws 32 in the end-side grain-stalk raising devices 13R, 13L are inclined at the set angle θ with respect to the horizontal direction is adopted, but instead of this structure, the structure in which the raising surfaces of the raising claws 32 in the end-side grain-stalk raising devices 13R, 13L are moved in the horizontal posture may be adopted.

(5) In the above embodiment, the harvesting section 2 harvests seven rows of standing grain stalks, but eight rows of standing grain stalks may be harvested, and for example, two rows of standing grain stalks may be introduced into the right-side grain stalk introduction path Q1, so long as at least seven rows can be harvested.

Industrial applicability

The present invention can be applied to a combine harvester in which a harvesting portion capable of harvesting seven or more rows of planted straw is provided at the front of a traveling machine body.

Claims

1. A combine harvester, characterized in that the combine harvester is provided with: left and right traveling devices; a traveling machine body on which the left and right traveling devices are installed; a cutting part which is arranged at the front part of the traveling machine body and can cut seven rows of planted vertical grain stalks;

the cutting part is provided with: a plurality of grain dividers which are arranged at intervals in the left-right direction and are divided to form seven grain and straw guide-in paths; seven grain stalk lifting devices which are respectively arranged corresponding to each grain stalk guide-in path in all the grain stalk guide-in paths and lift up the planted grain stalks; a harvesting device for cutting the planted vertical straw introduced into all the straw introduction paths; a conveying device which merges the harvested grain stalks in the harvesting width direction and conveys the grain stalks backward;

the position of the cutting section in the left-right direction at the right outer end of the cutting work area is substantially the same as the position of the lateral outer end of the right traveling device or is shifted to the right outward from the position of the lateral outer end of the right traveling device,

the position of the left outer end of the cutting work area in the left-right direction is substantially the same as the position of the lateral outer end of the left travel device or is shifted to the left outside from the position of the lateral outer end of the left travel device,

the harvesting unit is configured such that a lateral outer end of the right traveling device is positioned within a lateral width of the grain and stalk introduction path at a right end of the seven grain and stalk introduction paths, and a lateral outer end of the left traveling device is positioned within a lateral width of the grain and stalk introduction path at a left end of the seven grain and stalk introduction paths.

2. A combine harvester according to claim 1,

the position in the left-right direction of the right outer end of the cutting work area is shifted to the right outside from the position of the lateral outer end of the right traveling device, and the position in the left-right direction of the left outer end of the cutting work area is shifted to the left outside from the position of the lateral outer end of the left traveling device.

3. A combine harvester according to claim 1 or 2,

the position in the left-right direction of the lateral outer end portion on the left-right direction side of the traveling machine body is substantially the same as the position of the lateral outer end portion on the left-right direction side of the cutting work area, or is shifted outward in the left-right direction side from the position of the lateral outer end portion on the left-right direction side of the cutting work area.

4. A combine harvester according to any one of claims 1-3,

the grain stalk lifting device is provided with a plurality of lifting claws which move upwards in a transversely protruding state to lift the grain stalks,

two of the grain and stalk raising devices adjacent in a state where the raising claws face each other are disposed in a state where the raising action regions of the respective raising claws overlap.

5. A combine harvester, characterized in that the combine harvester is provided with: left and right traveling devices; a traveling machine body on which the left and right traveling devices are installed; a cutting part which is arranged at the front part of the traveling machine body and can cut a plurality of rows of vertical planted grain stalks;

the cutting part is provided with: a plurality of grain dividers which are arranged at intervals in the left-right direction and are divided to form seven or more than seven grain and straw guide-in paths; a plurality of grain stalk lifting devices which are respectively arranged corresponding to each grain stalk introduction path in all the grain stalk introduction paths and lift the planted grain stalks; a cutting device for cutting the vertical planted straw in a plurality of rows guided into all the straw guide paths; a conveying device which merges the plurality of rows of cut grain stalks in the cutting width direction and conveys the grain stalks backward;

the grain stalk lifter located at the end sides of the left and right end parts among the grain lifter devices is arranged in an inclined posture inclining towards the left and right sides and inwards.

6. A combine harvester according to claim 5,

headlamps are provided at laterally outer positions on the upper side of the grain stalk lifter on the end side.

7. A combine harvester according to claim 6,

a side cover is arranged at the lower side of the head lamp,

the side cover is provided in a state of being positioned more to the left and right inner side than the left and right outer end position of the headlight.

8. A combine harvester according to any one of claims 5 to 7,

among the plurality of grain stalk raising devices, the grain stalk raising device on the end portion side and the other grain stalk raising devices adjacent in a state where the raising claws face each other are provided in a state where the raising action regions of the raising claws overlap each other at least on the upper side of the raising path.