JP7576934B2 - combine - Google Patents

Description

The present invention relates to a combine harvester equipped with a harvesting section that harvests planted culms.

A combine harvester like the above is already known, for example, as described in Patent Document 1. In this combine harvester, the cutting section has left and right dividers that extend in the front-to-rear direction. The left divider includes a left dividing rod (referred to as the "vertical frame" in Patent Document 1) and a left dividing tool supported at the tip of the left dividing rod. The right divider includes a right dividing rod (referred to as the "vertical frame" in Patent Document 1) and a right dividing tool supported at the tip of the right dividing rod.

JP 2012-231712 A

When using a combine harvester like the one described above to harvest planted culms in rows, if the combine is driven so that one of the left and right dividing tools passes through a position where the planted culms will not split (for example, the position of the row that has already been cut that is closest to the uncut area), it is conceivable that the other tool will pass through a position where the planted culms will split.

For example, when the combine is driven so that the right-hand weed splitter passes over the row that is closest to the uncut area among the previously cut rows, it is possible that the left-hand weed splitter will pass over the position where the planted culm is split. This will result in some culms remaining uncut.

The objective of the present invention is to provide a combine harvester that can easily avoid splitting stalks while traveling.

The present invention is characterized in that the cutting section is provided with a cutting unit for cutting planted culms, the cutting unit having left and right dividers extending in a front-to-rear direction, the left divider including a left dividing rod extending in a front-to-rear direction and a left dividing tool supported at a tip of the left dividing rod, the right divider including a right dividing rod extending in a front-to-rear direction and a right dividing tool supported at a tip of the right dividing rod, the tip position of the left dividing tool being configured to be changeable in the left-to-right direction, and the tip position of the right dividing tool being changeable in the right-to-left direction. is configured to be changeable in the left-right direction, and is equipped with left and right traveling devices, the reaping unit has a plurality of dividers including the left and right dividers, the plurality of dividers are provided at intervals in the left-right direction, and define seven stalk introduction paths, the left-right position of the right outer end of the reaping work area of the reaping unit is approximately the same as the position of the lateral outer end of the right traveling device, or is shifted outward to the right from the position of the lateral outer end of the right traveling device, the left-right position of the left outer end of the reaping work area is approximately the same as the position of the lateral outer end of the left traveling device, or is shifted outward to the left from the position of the lateral outer end of the left traveling device, the reaping unit is configured such that the lateral outer end of the right traveling device is located within the left-right width of the rightmost stalk introduction path of the seven stalk introduction paths, and the left-right position of the rightmost stalk introduction path of the seven stalk introduction paths is within the left-right width of the leftmost stalk introduction path of the seven stalk introduction paths. The lateral outer end of the running device is positioned within the left-right width of the stalk introduction path at the right end, and the movable range of the tip position of the left dividing grass tool and the movable range of the tip position of the right dividing grass tool are set so that, regardless of where the tip position of the left dividing grass tool and the tip position of the right dividing grass tool are within their respective movable ranges, the lateral outer end of the right-side running device is positioned within the left-right width of the stalk introduction path at the left end .

With this invention, the tip position of the left weed splitter and the tip position of the right weed splitter can each be changed left and right. Therefore, when the combine is driven so that one of the left and right weed splitters passes through a position where it will not split the planted culm stalks, if the other passes through a position where it will split the planted culm stalks, the tip position of the other can be changed left and right to position the other in a position where it will not split the planted culm stalks.

For example, when the combine is driven so that the right weed splitter passes over the row that is closest to the uncut area among the cut rows, if the left weed splitter passes over the position where it would split the planted culm stalks, the tip position of the left weed splitter can be changed left or right to position the left weed splitter in a position where it will not split the planted culm stalks.

This makes it possible to prevent the combine from splitting stalks while traveling. In other words, the present invention makes it possible to realize a combine that can easily prevent the combine from splitting stalks while traveling.
In addition, with this configuration, the left and right traveling devices pass through the area where the reaping operation was performed by the reaping unit, but the left and right traveling devices travel within the area where the reaping operation was performed by the reaping unit. This allows the reaping work to be performed smoothly without the traveling devices accidentally trampling on uncut stalks.
The cutting unit is capable of cutting seven rows of planted culms, yet is configured so that the outer lateral end of the right-side running gear is positioned within the left-right width of the culm introduction path at the right end, and the outer lateral end of the left-side running gear is positioned within the left-right width of the culm introduction path at the left end.This means that the width dimension of the cutting unit is not too large compared to the width of the running body, and it can be stored in a compact shape.
Therefore, it is possible to provide a combine harvester having a compact cutting section that can simultaneously cut seven rows of planted culms and improve the efficiency of harvesting work.

Furthermore, in the present invention, it is preferable that the left weeding tool is removably attached to the left weeding rod, and the right weeding tool is removably attached to the right weeding rod.

With this configuration, if the left weeding tool is damaged, only the left weeding tool can be replaced. In other words, since there is no need to replace the left weeding pole along with the left weeding tool, the cost required to replace the left weeding tool can be reduced. For the same reason, the cost required to replace the right weeding tool can also be reduced.

Furthermore, in the present invention, when the tip position of the left dividing tool is located at the leftmost position within the movable range, the tip position of the left dividing tool is located to the left of the center position in the left-right direction of the tip of the left dividing rod, and when the tip position of the right dividing tool is located at the rightmost position within the movable range, the tip position of the right dividing tool is located to the right of the center position in the left-right direction of the tip of the right dividing rod.

With this configuration, if the tip of the left weed splitter is positioned to the leftmost position within the movable range, planted culm stalks located to the left of the center position in the left-right direction of the tip of the left weed splitter can be introduced into the cutting section as the cutting target.

As a result, even if a row of planted culms that should be introduced into the cutting section by being guided by the left-hand weeding tool is planted slightly to the left of the appropriate position, the row can be reliably introduced into the cutting section as the cutting target. This makes it easier to avoid leaving any culms uncut.

For the same reason, with this configuration, even if a row of planted culms that should be introduced into the cutting section by being guided by the right-hand weeding tool is planted slightly to the right of the appropriate position, the row can be reliably introduced into the cutting section as the cutting target. This makes it easier to avoid leaving any culms uncut.

Furthermore, in the present invention, it is preferable that the cutting section has a plurality of dividers including the left and right dividers, the plurality of dividers being arranged at intervals in the left-right direction, and the movable range of the tip position of the left dividing tool and the movable range of the tip position of the right dividing tool are set so that rows are introduced between all of the dividers when cutting planted culms planted in rows at regular intervals , regardless of where the tip positions of the left dividing tool and the right dividing tool are within their respective movable ranges.

With this configuration, rows are introduced between all dividers no matter how the tip positions of the left and right dividing tools are changed. In other words, it is possible to avoid a situation in which changing the tip positions of the left and right dividing tools impedes the introduction of rows, thereby reducing the number of rows that can be cut.

FIG. FIG. FIG. FIG. 13 is an exploded perspective view showing the configuration of the left divider. FIG. 13 is a plan view showing the configuration of the left divider. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5. FIG. 13 is an exploded perspective view showing the configuration of the right divider. FIG. 13 is a plan view showing the configuration of the right divider. FIG. 13 is a plan view showing the positional relationship between each divider and rows in a field.

The embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of arrow F shown in Figures 1, 2, 4, 5, 7 to 9 is defined as "front", the direction of arrow B is defined as "rear", the direction of arrow L shown in Figures 2 to 9 is defined as "left", and the direction of arrow R is defined as "right". In addition, the direction of arrow U shown in Figures 1, 3, 4, 6, and 7 is defined as "up", and the direction of arrow D is defined as "down".

[Overall configuration of the combine]
1 and 2, the combine harvester according to the present invention includes a traveling body 1 and a reaping unit 2 capable of reaping seven rows of planted culms. An engine E is mounted on the traveling body 1. The traveling body 1 includes left and right crawler traveling devices 4R, 4L (corresponding to the "traveling device" according to the present invention), and a driving unit 5 is provided on the right side of the front part of the body.

That is, this combine has a harvesting section 2 that harvests planted stalks. This combine also has left and right crawler travel devices 4R, 4L.

The driver's seat 5a is provided in the driver's section 5. Behind the driver's section 5, a threshing device 6 that threshes the stalks harvested by the harvesting section 2 and a grain tank 7 that stores the grains obtained by the threshing process are arranged side by side on the machine body.

The operating section 5 is covered by a cabin 8. Although not shown, the threshing device 6 conveys the stalks of the harvested culms transported from the harvesting section 2 by clamping them with a threshing feed chain 9, threshing the tips inside the threshing chamber, and separating them into grains and dust in a sorting section provided at the bottom of the threshing chamber. The grains are stored in a grain tank 7, and the dust is discharged outside the machine. The machine is equipped with a grain discharge device 10 that can discharge the grains stored in the grain tank 7 to the outside, and a shredding device 11 that shreds the straw waste after threshing and discharges it outside the machine.

As shown in Figures 1 and 2, the reaping unit 2 is equipped with a plurality of (eight) dividers 40 that extend in the front-rear direction and are spaced apart in the left-right direction to define seven culm introduction paths Q1 to Q7, seven lifting devices 13 that are provided corresponding to each of the culm introduction paths Q1 to Q7 and that raise the planted culms, a clipper-type reaping device 14 that cuts the planted culms introduced into all of the culm introduction paths Q1 to Q7, and a transport device 15 that merges the reaped culms in the reaping width direction and transports them backwards.

In other words, the multiple dividers 40 are spaced apart in the left-right direction and define seven stalk introduction paths Q1 to Q7.

The multiple dividers 40 include a left divider 50 and a right divider 60. The left divider 50 is the divider 40 located furthest to the left of the aircraft among the multiple dividers 40. The right divider 60 is the divider 40 located furthest to the right of the aircraft among the multiple dividers 40.

That is, the reaping unit 2 has left and right dividers 50, 60 that extend in the front-rear direction. The reaping unit 2 also has multiple dividers 40 including the left and right dividers 50, 60.

Here, each divider 40 includes a grass dividing rod 41 and a grass dividing tool 42. The grass dividing rod 41 extends in the front-rear direction. The grass dividing tool 42 is supported at the tip of the grass dividing rod 41.

The left divider 50 includes a left dividing rod 51 and a left dividing tool 52. The left dividing rod 51 is the dividing rod 41 in the left divider 50. The left dividing tool 52 is the dividing tool 42 in the left divider 50.

The right divider 60 also includes a right weed dividing rod 61 and a right weed dividing tool 62. The right weed dividing rod 61 is the weed dividing rod 41 in the right divider 60. The right weed dividing tool 62 is the weed dividing tool 42 in the right divider 60.

That is, the left divider 50 includes a left dividing rod 51 that extends in the front-to-rear direction, and a left dividing tool 52 supported at the tip of the left dividing rod 51. The right divider 60 includes a right dividing rod 61 that extends in the front-to-rear direction, and a right dividing tool 62 supported at the tip of the right dividing rod 61.

Of the eight weed splitting tools 42, the two that are located furthest to the outside of the machine split the planted culms into those to be harvested and those not to be harvested, introduce the culms to be harvested into the raising path adjacent to the weed splitting tool 42, and guide the non-target culms to the outside of the raising path. The other weed splitting tools 42 split the culms to be planted in the two planting rows to both sides of the weed splitting tool 42 and introduce them into the raising paths on both sides of the weed splitting tool 42. Each of the culm introduction paths Q1 to Q7 has a width defined by two adjacent weed splitting tools 42, and is intended to introduce one row of planted culms.

[Frame structure of the harvesting unit]
Next, a description will be given of the frame structure of the reaping unit 2. As shown in Fig. 1, a cylindrical reaping support frame 16 is provided which supports the entire reaping unit 2 so that it can be raised and lowered relative to the traveling body 1. This reaping support frame 16 is supported by a horizontal pivot part 17 provided on the base end side of the upper rear part.

A cylindrical lower horizontal frame 19 extending left and right, i.e., in the mowing width direction, is connected to the front end of the mowing support frame 16. As shown in FIG. 1, a left dividing rod 51 and a right dividing rod 61 are connected to both ends of the lower horizontal frame 19 in the width direction of the machine body, extending toward the front of the machine body. A rectangular cylindrical cutting blade support frame 21 extending in the width direction of the machine body is connected in a state where it is installed between the front and rear middle parts of the left dividing rod 51 and the right dividing rod 61. The mowing device 14 is supported by the cutting blade support frame 21.

The multiple dividing rods 41 located between the left dividing rod 51 and the right dividing rod 61 have their rear ends connected to the blade support frame 21 and are cantilevered toward the front of the machine body.

As shown in FIG. 1, a cylindrical left-side vertical frame 25 extends upward from the left end of the lower horizontal frame 19.

[Positional relationship between the crawler traveling device and the harvesting work area]
As shown in Fig. 3, the outer lateral end TL of the left crawler travelling device 4L is located within the width of the stalk introduction path Q7. The outer lateral end TR of the right crawler travelling device 4R is located within the width of the stalk introduction path Q1.

In other words, the harvesting unit 2 is configured so that the outer lateral end TR of the right crawler traveling device 4R is located within the left-right width of the rightmost stump introduction path Q1 of the seven stump introduction paths Q1 to Q7, and the outer lateral end TL of the left crawler traveling device 4L is located within the left-right width of the leftmost stump introduction path Q7 of the seven stump introduction paths Q1 to Q7.

To explain further, the left outer end KL of the mowing work area W, which is the work area where mowing work is performed by the mowing device 14, is shifted outward to the left relative to the lateral outer end TL of the left crawler traveling device 4L. In addition, the right outer end KR of the mowing work area W is shifted outward to the right relative to the lateral outer end TR of the right crawler traveling device 4R.

However, the present invention is not limited to this. The left outer end KL of the mowing work area W may be located in the left-right direction substantially the same position as the lateral outer end TL of the left crawler traveling device 4L. Also, the right outer end KR of the mowing work area W may be located in the left-right direction substantially the same position as the lateral outer end TR of the right crawler traveling device 4R.

That is, in this embodiment, the left-right position of the right outer end KR of the mowing work area W in the mowing unit 2 is approximately the same as the position of the lateral outer end TR of the right crawler traveling device 4R, or is shifted outward to the right from the position of the lateral outer end TR of the right crawler traveling device 4R. Also, the left-right position of the left outer end KL of the mowing work area W is approximately the same as the position of the lateral outer end TL of the left crawler traveling device 4L, or is shifted outward to the left from the position of the lateral outer end TL of the left crawler traveling device 4L.

By configuring the harvesting unit 2 as described above, the left and right crawler travel devices 4R, 4L can be used during harvesting operations without risking trampling down uncut stalks, allowing for smooth harvesting operations.

[Raising device]
1, each of the lifting devices 13 is provided in an upright position with its lower end positioned toward the front of the vehicle body and its upper end positioned toward the rear of the vehicle body. The configuration of each of the lifting devices 13 will be described below.

As shown in FIG. 3, the lifting device 13 is provided with an endless rotating chain 31 wound around the drive sprocket 28 and tensioning sprocket 29 located on the upper side, and the driven sprocket 30 located on the lower side inside the lifting case 27 that also serves as a frame, and the endless rotating chain 31 is provided with a plurality of lifting claws 32 spaced at predetermined intervals along the longitudinal direction. The lifting claws 32 are supported by the endless rotating chain 31 so that they can be changed between an upright position and a lying position.

The endless rotating chain 31 is driven to rotate by the power from the engine E. This causes the multiple lifting claws 32 to move upward while combing the stalks. With this configuration, each lifting device 13 lifts the planted stalks introduced into the lifting path.

In more detail, the lifting device 13 has one of the vertical movement paths on either the left or right side of the endless rotating chain 31 set as a lifting action path, and the opposite side set as a non-working return path. Although not shown, the lifting action path is provided with a guide plate that guides the lifting claw 32 to rise at the point where the endless rotating chain 31 passes.

In the raising action path, the raising claws 32 protruding sideways of the raising device 13 move upward while combing the stumps, and when it reaches the end of the raising action path, it detaches from the stumps and is stored inside the raising case 27, and then moves down the non-working return path and returns to the raising action path. In this way, each raising device 13 raises the planted stumps that have been introduced into the raising action path by the raising claws 32 moving upward.

[Left divider configuration]
As shown in Fig. 4, the left lever 51 has a round pipe-shaped left frame portion 71 and a plate-shaped left support portion 72 extending in the front-rear direction. The left frame portion 71 extends in the front-rear direction. The left support portion 72 is fixed to an upper portion of the front end portion of the left frame portion 71. The left support portion 72 is in a horizontal position.

The left grass dividing tool 52 has a left grass dividing body 73 and a left base end 74. As shown in FIG. 5, the left grass dividing body 73 has a shape that is wider toward the rear in a plan view. The left grass dividing body 73 divides the planted culms.

The left base end 74 extends in the front-to-rear direction. The left branch main body 73 is supported at the front end of the left base end 74. The left base end 74 is then supported by the left support part 72.

More specifically, as shown in FIG. 6, the rear portion of the left base end portion 74 has a U-shaped cross section. The left base end portion 74 is supported by the left support portion 72 with the rear portion of the left base end portion 74 covering the front portion of the left support portion 72 from above.

As shown in Figures 4 to 6, the left support portion 72 has a left first hole 72a, a left second hole 72b, and a left third hole 72c. These holes are arranged from the front side in the order of the left first hole 72a, the left second hole 72b, and the left third hole 72c.

Here, FIG. 5 shows the first central position CL1. The first central position CL1 is the left-right central position of the tip of the left lever 51. The left first hole 72a, the left second hole 72b, and the left third hole 72c are all located on the first central position CL1.

As shown in Figs. 5 and 6, the left frame portion 71 has three left bolt holes 71a. The three left bolt holes 71a are provided at positions overlapping the first left hole 72a, the second left hole 72b, and the third left hole 72c in a plan view. As shown in Fig. 6, three left nuts n1 are fixed inside the left frame portion 71 at locations corresponding to the three left bolt holes 71a.

As shown in Figures 4 to 6, a left fourth hole 74a, a left fifth hole 74b, and a left sixth hole 74c are formed at the rear of the left base end 74. These holes are arranged in the following order from the front side: left fourth hole 74a, left fifth hole 74b, and left sixth hole 74c.

As shown in FIG. 5 as state a, when the left fourth hole 74a and the left fifth hole 74b are positioned on the first central position CL1, the left sixth hole 74c is positioned in a position biased to the left of the first central position CL1.

As shown in FIG. 4, the left base end 74 is fastened to the left frame part 71 and the left support part 72 by the first bolt b1 and the second bolt b2. This attaches the left dividing tool 52 to the left dividing rod 51.

In addition, the left base end portion 74 can be removed from the left frame portion 71 and the left support portion 72 by releasing the fastening by the first bolt b1 and the second bolt b2. This allows the left dividing tool 52 to be removed from the left dividing rod 51.

In other words, the left weeding tool 52 is removably attached to the left weeding rod 51.

As shown in Figures 4 to 6, the first bolt b1 is provided so as to pass through the left fifth hole 74b, the left second hole 72b, the left bolt hole 71a, and the left nut n1. When the second bolt b2 is removed, the left base end 74 is configured to be swingable relative to the left frame portion 71 and the left support portion 72 around the first swing axis P1 that passes through the center of the first bolt b1, as shown in Figures 5 and 6.

With this configuration, the left weeding tool 52 can swing relative to the left weeding rod 51 around the first swing axis P1 along the vertical direction.

The left weeding tool 52 swings horizontally when the cutting unit 2 is in the lowest working state. In other words, when the left weeding tool 52 swings when the cutting unit 2 is in the lowest working state, the vertical position of the tip 52a of the left weeding tool 52 does not change.

As shown in FIG. 5 as state a, the swinging position of the left weeding tool 52 is fixed with the tip 52a of the left weeding tool 52 facing forward by inserting the second bolt b2 into the left fourth hole 74a and tightening the second bolt b2 while the left fourth hole 74a overlaps with the left first hole 72a and the left bolt hole 71a.

In this state a, the second bolt b2 passes through the left fourth hole 74a, the left first hole 72a, the left bolt hole 71a, and the left nut n1. The left sixth hole 74c is positioned offset to the left with respect to the left third hole 72c and the left bolt hole 71a. The position of the tip 52a of the left weeding tool 52 in the left-right direction is approximately the same as the first central position CL1. However, strictly speaking, the tip 52a of the left weeding tool 52 is located to the right of the first central position CL1.

Also, by releasing the second bolt b2 while leaving the first bolt b1 in a fastened state, the left hand weeding tool 52 becomes swingable.

Then, as shown in FIG. 5 as state b, the swinging posture of the left weeding tool 52 is set so that the left sixth hole 74c overlaps with the left third hole 72c and the left bolt hole 71a. By inserting the second bolt b2 into the left sixth hole 74c and tightening the second bolt b2, the swinging posture of the left weeding tool 52 is fixed with the tip 52a of the left weeding tool 52 facing forward to the left.

In this state b, the second bolt b2 passes through the left sixth hole 74c, the left third hole 72c, the left bolt hole 71a, and the left nut n1. The left fourth hole 74a is positioned to the left of the left first hole 72a and the left bolt hole 71a. The tip 52a of the left weeding tool 52 is positioned to the left of the first central position CL1.

With this configuration, the tip position of the left weeding tool 52 can be changed between the position of the tip 52a in state a and the position of the tip 52a in state b. The range spanning the position of the tip 52a in state a and the position of the tip 52a in state b is the movable range of the tip position of the left weeding tool 52. That is, in state a, the tip position of the left weeding tool 52 is located at the rightmost position within the movable range. Also, in state b, the tip position of the left weeding tool 52 is located at the leftmost position within the movable range.

The configuration described above allows the tip position of the left weeding tool 52 to be changed in the left-right direction. In addition, when the tip position of the left weeding tool 52 is located at the leftmost position within the movable range, the tip position of the left weeding tool 52 is located to the left of the left-right center position of the tip of the left weeding rod 51.

[Right divider configuration]
The configuration of the tip of the right dividing rod 61 and the right dividing tool 62 is symmetrical to the configuration of the tip of the left dividing rod 51 and the left dividing tool 52. The configuration of the tip of the right dividing rod 61 and the right dividing tool 62 will be described in detail below.

As shown in FIG. 7, the right lever 61 has a round pipe-shaped right frame portion 81 and a plate-shaped right support portion 82 that extends in the front-rear direction. The right frame portion 81 extends in the front-rear direction. The right support portion 82 is fixed to the upper part of the front end portion of the right frame portion 81. The right support portion 82 is in a horizontal position.

The right grass dividing tool 62 also has a right grass dividing body 83 and a right base end 84. As shown in FIG. 8, the right grass dividing body 83 has a shape that is wider toward the rear in a plan view. The right grass dividing body 83 then divides the planted culms.

The right base end 84 extends in the front-to-rear direction. The right branch main body 83 is supported at the front end of the right base end 84. The right base end 84 is then supported by the right support part 82.

More specifically, like the left base end 74, the rear portion of the right base end 84 has a U-shaped cross section. The right base end 84 is supported by the right support portion 82 with the rear portion of the right base end 84 covering the front portion of the right support portion 82 from above.

As shown in Figures 7 and 8, the right support part 82 has a right first hole 82a, a right second hole 82b, and a right third hole 82c. These holes are arranged from the front side in the order of the right first hole 82a, the right second hole 82b, and the right third hole 82c.

Here, FIG. 8 shows the second central position CL2. The second central position CL2 is the left-right central position of the tip of the right lever 61. The right first hole 82a, the right second hole 82b, and the right third hole 82c are all located on the second central position CL2.

As shown in FIG. 8, the right frame portion 81 has three right bolt holes 81a. The three right bolt holes 81a are provided at positions overlapping with the right first hole 82a, the right second hole 82b, and the right third hole 82c in a plan view. As with the left frame portion 71, three right nuts (not shown) are fixed inside the right frame portion 81 at locations corresponding to the three right bolt holes 81a.

As shown in Figures 7 and 8, a right fourth hole 84a, a right fifth hole 84b, and a right sixth hole 84c are formed at the rear of the right base end 84. These holes are arranged in the following order from the front side: right fourth hole 84a, right fifth hole 84b, and right sixth hole 84c.

As shown in FIG. 8 as state a, when the right fourth hole 84a and the right fifth hole 84b are positioned on the second central position CL2, the right sixth hole 84c is positioned in a position biased to the right of the second central position CL2.

As shown in FIG. 7, the right base end portion 84 is fastened to the right frame portion 81 and the right support portion 82 by the third bolt b3 and the fourth bolt b4. This attaches the right dividing tool 62 to the right dividing rod 61.

In addition, by releasing the fastening by the third bolt b3 and the fourth bolt b4, the right base end portion 84 can be removed from the right frame portion 81 and the right support portion 82. As a result, the right dividing tool 62 can be removed from the right dividing rod 61.

In other words, the right weeding tool 62 is removably attached to the right weeding rod 61.

As shown in Figures 7 and 8, the third bolt b3 is provided so as to pass through the right fifth hole 84b, the right second hole 82b, the right bolt hole 81a, and the right nut (not shown). When the fourth bolt b4 is removed, the right base end portion 84 is configured to be able to swing relative to the right frame portion 81 and the right support portion 82 around the second swing axis P2 that passes through the center of the third bolt b3, as shown in Figure 8.

With this configuration, the right hand weeding tool 62 can swing relative to the right hand weeding rod 61 around the second swing axis P2 that runs vertically.

The right weed splitter 62 swings horizontally when the cutting unit 2 is in its lowest working state. In other words, when the right weed splitter 62 swings when the cutting unit 2 is in its lowest working state, the vertical position of the tip 62a of the right weed splitter 62 does not change.

As shown in FIG. 8 as state a, the swinging posture of the right weeding tool 62 is such that the right fourth hole 84a overlaps with the right first hole 82a and the right bolt hole 81a. By inserting the fourth bolt b4 into the right fourth hole 84a and tightening the fourth bolt b4, the swinging posture of the right weeding tool 62 is fixed with the tip 62a of the right weeding tool 62 facing forward.

In this state a, the fourth bolt b4 passes through the right fourth hole 84a, the right first hole 82a, the right bolt hole 81a, and the right nut. The right sixth hole 84c is positioned to the right relative to the right third hole 82c and the right bolt hole 81a. The position of the tip 62a of the right weeding tool 62 in the left-right direction is approximately the same as the second central position CL2. However, strictly speaking, the tip 62a of the right weeding tool 62 is located to the left of the second central position CL2.

In addition, by releasing the fourth bolt b4 while leaving the third bolt b3 in a fastened state, the right hand weeding tool 62 becomes swingable.

Then, as shown in FIG. 8 as state b, the swinging posture of the right weeding tool 62 is set so that the right sixth hole 84c overlaps with the right third hole 82c and the right bolt hole 81a. By inserting the fourth bolt b4 into the right sixth hole 84c and tightening the fourth bolt b4, the swinging posture of the right weeding tool 62 is fixed with the tip 62a of the right weeding tool 62 facing forward to the right.

In this state b, the fourth bolt b4 passes through the right sixth hole 84c, the right third hole 82c, the right bolt hole 81a, and the right nut. The right fourth hole 84a is positioned to the right of the right first hole 82a and the right bolt hole 81a. The tip 62a of the right weeding tool 62 is positioned to the right of the second central position CL2.

With this configuration, the tip position of the right weeding tool 62 can be changed between the position of the tip 62a in state a and the position of the tip 62a in state b. The range spanning the position of the tip 62a in state a and the position of the tip 62a in state b is the movable range of the tip position of the right weeding tool 62. That is, in state a, the tip position of the right weeding tool 62 is located at the leftmost position within the movable range. Also, in state b, the tip position of the right weeding tool 62 is located at the rightmost position within the movable range.

The configuration described above allows the tip position of the right weeding tool 62 to be changed in the left-right direction. In addition, when the tip position of the right weeding tool 62 is located at the rightmost position within the movable range, the tip position of the right weeding tool 62 is located to the right of the center position in the left-right direction of the tip of the right weeding rod 61.

[About the range of motion]
Fig. 9 shows the positional relationship between each divider 40 and the rows in the field when the combine is performing a harvesting operation in the field. As shown in Fig. 9, when the combine is driven so that the tip 62a of the right dividing tool 62 passes through the row position of the already-cut rows that is closest to the uncut area with the left dividing tool 52 and the right dividing tool 62 in the above-mentioned state a, the uncut rows are introduced into all of the seven stalk introduction paths Q1 to Q7.

In addition, at this time, as shown by the phantom lines in Figure 9, even if one or both of the left weeding tool 52 and the right weeding tool 62 are changed to the above-mentioned state b, uncut rows are introduced into all seven stalk introduction paths Q1 to Q7.

In other words, the movable range of the tip position of the left dividing tool 52 and the movable range of the tip position of the right dividing tool 62 are set so that rows are introduced between all of the dividers 40 when harvesting the planted culms planted in rows, regardless of where the tip positions of the left dividing tool 52 and the right dividing tool 62 are within their respective movable ranges.

Figure 9 also shows the first position PL1. The first position PL1 is the position of the row that is subjected to the weed-splitting action of the left weed-splitting tool 52. If this row is shifted to the left side of the machine body and is located at the second position PL2, and the left weed-splitting tool 52 is in the above-mentioned state a, the left weed-splitting tool 52 will split the row of planted culm.

If this row is located at the second position PL2, changing the left weed splitting tool 52 to the state b described above will prevent the left weed splitting tool 52 from splitting this row, and the row will be introduced into the stalk introduction path Q7.

With the configuration described above, the tip position of the left weeding tool 52 and the tip position of the right weeding tool 62 can each be changed left and right. Therefore, when the combine is driven so that one of the left weeding tool 52 and the right weeding tool 62 passes through a position where it will not split the planted culm stalks, if the other passes through a position where it will split the planted culm stalks, the tip position of the other tool can be changed left and right to position the other tool in a position where it will not split the planted culm stalks.

For example, when the combine is driven so that the right weed splitter 62 passes over the row that is closest to the uncut area among the already cut rows, if the left weed splitter 52 passes over the position where it splits the planted culm stalks, the tip position of the left weed splitter 52 can be changed left or right to position the left weed splitter 52 in a position where it does not split the planted culm stalks.

This prevents the combine from splitting stalks while traveling. In other words, the configuration described above makes it possible to realize a combine that can easily avoid splitting stalks while traveling.

Other embodiments
(1) Instead of the crawler traveling devices 4R and 4L, wheel-type traveling devices or semi-crawler-type traveling devices may be provided.

(2) In the above embodiment, eight dividers 40 are provided. The present invention is not limited to this, and any number of dividers 40 may be provided as long as it is two or more.

(3) The left weeding tool 52 may be configured so that it cannot be removed from the left weeding rod 51.

(4) The right weeding tool 62 may be configured so that it cannot be removed from the right weeding rod 61.

(5) In the above embodiment, the tip position of the left weeding tool 52 is configured to be switchable between two positions, a position in state a and a position in state b. The present invention is not limited to this, and the tip position of the left weeding tool 52 may be configured to be switchable between three or more positions, or may be configured to be changeable in a stepless manner.

(6) In the above embodiment, the tip position of the right weeding tool 62 is configured to be switchable between two positions: a position in state a and a position in state b. The present invention is not limited to this, and the tip position of the right weeding tool 62 may be configured to be switchable between three or more positions, or may be configured to be steplessly changeable.

The configurations disclosed in the above-mentioned embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, so long as no contradiction occurs. Furthermore, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these embodiments, and can be modified as appropriate within the scope of the purpose of the present invention.

The present invention can be used not only for head-feeding combine harvesters, but also for normal combine harvesters.

2 Harvesting unit 4L, 4R Crawler running device (running device)
40 Divider 50 Left divider 51 Left dividing rod 52 Left dividing tool 60 Right divider 61 Right dividing rod 62 Right dividing tool KL Left outer end KR Right outer end Q1-Q7 Straw introduction path TL Side outer end of left traveling device TR Side outer end of right traveling device W Harvesting work area

Claims (4)

The present invention is provided with a reaping unit for reaping planted culms,
The reaping unit has left and right dividers extending in the front-rear direction,
The left divider includes a left dividing rod extending in the front-rear direction and a left dividing tool supported on a tip of the left dividing rod,
The right divider includes a right dividing rod extending in the front-rear direction and a right dividing tool supported on a tip of the right dividing rod,
The tip position of the left hand grass tool is configured to be changeable in the left and right direction,
The tip position of the right hand grass tool is configured to be changeable in the left and right direction,
Equipped with left and right running gear,
The reaping unit has a plurality of dividers including the left and right dividers,
The dividers are spaced apart in the left-right direction and define seven stalk introduction paths,
The position of the right outer end of the mowing work area in the mowing section in the left-right direction is substantially the same as the position of the lateral outer end of the right traveling device, or is shifted outward to the right from the position of the lateral outer end of the right traveling device,
The left-right position of the left outer end of the mowing work area is approximately the same as the position of the lateral outer end of the left traveling device, or is shifted outward to the left from the position of the lateral outer end of the left traveling device,
The reaping unit is configured such that the lateral outer end of the right-side traveling device is located within the left-right width of the right-end stump introduction path of the seven stump introduction paths, and the lateral outer end of the left-side traveling device is located within the left-right width of the left-end stump introduction path of the seven stump introduction paths ,
A combine harvester in which the movable range of the tip position of the left weeding tool and the movable range of the tip position of the right weeding tool are set so that, regardless of where the tip positions of the left weeding tool and the right weeding tool are within their respective movable ranges, the outer lateral end of the right-side running gear is located within the left-right width of the stalk introduction path at the right end, and the outer lateral end of the left-side running gear is located within the left-right width of the stalk introduction path at the left end . The left hand grass tool is detachably attached to the left hand grass rod,
The combine harvester according to claim 1, wherein the right hand grass splitter is detachably attached to the right hand grass splitter. When the tip position of the left dividing tool is located at the leftmost position within the movable range, the tip position of the left dividing tool is located to the left of the left-right center position of the tip of the left dividing rod,
A combine harvester as described in claim 1 or 2, wherein when the tip position of the right dividing tool is located at the rightmost position within the movable range, the tip position of the right dividing tool is located to the right of the left-right center position of the tip of the right dividing rod. The reaping unit has a plurality of dividers including the left and right dividers,
The dividers are provided at intervals in the left-right direction,
A combine harvester as described in any one of claims 1 to 3, wherein the movable range of the tip position of the left dividing tool and the movable range of the tip position of the right dividing tool are set so that rows are introduced between all of the dividers when harvesting planted culms planted in rows at regular intervals , regardless of where the tip positions of the left dividing tool and the right dividing tool are within their respective movable ranges.

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