JP2018117581A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester in which a pre-processing part can be forcibly driven by forced raking control, allowing a user to smoothly operate the forced raking control of the pre-processing part.SOLUTION: The combine-harvester includes a pre-processing part 3, a thresher 6, a feed chain 21, vehicle speed detection means 61 and a control part 50. The control part 50 is configured to execute forced raking control for stopping execution of interlocking control of a vehicle speed and drive the pre-processing part 3 regardless of the vehicle speed when an operation of a forced raking operation tool 56 is detected. The feed chain 21 is configured to be driven at a constant speed regardless of the vehicle speed. The control part 50 has continuation means to continue execution of force raking control, not stopping it during a predetermined time even when an operation release of the forced raking operation tool 56 is detected during the execution of forced raking control.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a combine equipped with a control unit capable of executing forced scratching control that is driven by a preprocessing unit regardless of the vehicle speed.

  A pre-processing unit that harvests and transports cereals backward, a threshing device that threshs cereals, a feed chain that transports cereals backward along the threshing device, and a vehicle speed detection means that detects vehicle speed A control unit, and the control unit controls the driving of the preprocessing unit based on the vehicle speed detected by the vehicle speed detecting unit, and stops the driving of the preprocessing unit and the threshing device when the vehicle speed is not detected. When the operation of the forced scraping operation tool is detected while the vehicle speed interlocking control is performed, the combine described in Patent Document 1 that executes the forced scraping control that drives the preprocessing unit regardless of the vehicle speed is provided. Conventionally known.

Japanese Patent No. 3756120

  According to the combine in the above document, the pretreatment unit is forcibly driven and the cereals harvested by the pretreatment unit are moved backward to the threshing device side even when the traveling machine body is stopped by forced scraping control. Since it can be transported, it can more reliably prevent the cereals harvested by the pre-processing unit from falling to the field side, but the sown cereals remain on the pre-processing unit side when the forced scraping control is executed. It is necessary for the operator to perform an operation while confirming visually or the like, and the operation may take time.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a combine that can forcefully drive the pre-treatment unit in the combine that can force-drive the pre-processing unit by the forced take-up control.

  In order to solve the above-mentioned problems, first, the pre-processing unit 3 that harvests and transports the cereals backward, the threshing device 6 that threshs the cereals, and the cereals along the threshing device 6 A feed chain 21 to be transported, a vehicle speed detecting means 61 for detecting the vehicle speed, and a control unit 50 are provided. The control unit 50 drives the preprocessing unit 3 based on the vehicle speed detected by the vehicle speed detecting means 61. If the vehicle speed is not detected and the vehicle speed interlocking control for stopping the driving of the pre-processing unit 3 is executed, the operation of the forced scraping operation tool 56 is detected and the vehicle speed interlocking control is executed. Is executed, and the forced scraping control for driving the preprocessing unit 3 regardless of the vehicle speed is executed, and when the operation release of the forced scraping operation tool 56 is detected, the execution of the forced scraping control is stopped. In the combine configured in The chain 21 is configured to be driven at a constant speed regardless of the vehicle speed, and the control unit 50 can detect the release of the forced scratching operation tool 56 during the forced scratching control. There is a continuation means 29 for continuing the forced take-up control without stopping for a predetermined time, and the reaping device 6 side of the harvested cereals harvested by the forced take-up control by the continuation means 29 is provided. It is characterized by completing the backward conveyance.

  Secondly, the pre-processing unit 3 that harvests and transports the grain husks backward, the threshing device 6 that performs the threshing process of the harvested cereal straws, and the feed chain 21 that transports the harvested cereal straws back along the threshing device 6 Vehicle speed detecting means 61 for detecting the vehicle speed, and a control unit 50. The control unit 50 controls the driving of the preprocessing unit 3 based on the vehicle speed detected by the vehicle speed detecting means 61, and the vehicle speed is If not detected, the vehicle speed interlocking control for stopping the driving of the pre-processing unit 3 is executed. On the other hand, if the operation of the forced scratching operation tool 56 is detected, the execution of the vehicle speed interlocking control is stopped and A combine configured to execute the forced take-up control for driving the preprocessing unit 3 regardless of the vehicle speed and to stop the execution of the forced take-up control when the operation release of the forced take-in operation tool 56 is detected. The feed chain 21 The controller 50 is configured to drive in conjunction with the vehicle speed detected by the vehicle speed detecting means 61, and the control unit 50 detects that the forced scraping operation tool 56 is released during the forced scratch control. However, it has continuation means 29 for continuing the forced take-up control without stopping for a predetermined time, and completes the threshing work of the harvested cereal mash that has been cut by the forced take-up control. It is characterized by letting.

  Thirdly, the control unit 50 includes a culm detection unit 19 that detects that the culm cut by the preprocessing unit 3 is at a predetermined transport position, and the control unit 50 uses the culm detection unit 19 to detect the culm. It is characterized in that the execution of the forced scratching control by the continuation means is continued under at least one condition that it is detected.

  Fourthly, the control unit 50 is characterized by having canceling means for canceling the continuation of execution while the forced stake control by the continuation means 29 is being continued.

  Fifth, the control unit 50 is characterized by executing cancellation by a canceling means by a predetermined operation by the forced scratching operation tool 56.

  In the forced scratch control, when the forced scraping operation tool detects the release of forced scratching of the preprocessing unit, the forced scratching by the preprocessing unit automatically continues for a predetermined time. As a result, the operator can visually check the conveyance status of the harvested cereal while performing the forced scraping operation tool and performing the release operation. Can be reliably prevented from stopping, so that the operability is improved.

  Moreover, it is provided with the culm detection means which detects that the culm cut by the said pre-processing part exists in a predetermined conveyance position, The said control part is that the cereal is detected by the said culm detection means. As at least one condition, according to the continuous continuation control execution by the continuation means, all of the cereals harvested by the forced rake control are transported backward from the predetermined transport position, Since the continuation unit is not executed in a situation where the continuation of execution is unnecessary, such as when the harvested grain culm is not detected by the culm detection unit, it is possible to efficiently prevent an excessive load from being applied to the preprocessing unit.

  In addition, according to the control unit having the canceling unit that cancels the execution continuation while the execution of the forced scratching control by the continuation unit is being performed, the continuation of the execution can be quickly performed by the operation of the operator. And since it can be stopped smoothly, safety and versatility are improved.

  In addition, according to what performs the cancellation by the canceling means by a predetermined operation by the forced scraping operation tool, the control unit, the manipulation tool for operating the execution of the forced scratch control of the preprocessing unit, Since the operating tool for canceling execution continuation is the same, only the operation for canceling execution continuation can be performed smoothly. Moreover, since it is not necessary to prepare a dedicated operation tool separately, the number of parts can be reduced and the cost can be kept low.

1 is an overall side view of a combine to which the present invention is applied. It is the principal part side view which showed the pre-processing part. It is a power transmission system diagram of this combine. It is the perspective view which showed the control part. It is a block diagram of a control part. It is the characteristic graph which showed the relationship between the drive speed of a pre-processing part and a feed chain, and a vehicle speed. It is a flowchart of continuation control. It is a power transmission system diagram in another example.

  FIG. 1 is an overall side view of a combine to which the present invention is applied, FIG. 2 is a side view of a main part showing a pre-processing section, and FIG. 3 is a perspective view showing a control section. This combine includes a traveling machine body 2 in which the machine body frame is supported by a pair of left and right crawler type traveling devices 1 and 1, and a pre-processing for harvesting grain cereals supported by the traveling machine body 2 so as to be movable up and down. Part 3.

  The traveling machine body 2 includes a control unit 4 in which an operator gets into a position right behind the pre-processing unit 3 to perform a steering operation, and a grain cocoon harvested by the pre-processing unit 3 on the diagonally left rear side of the control unit 4. There are provided a threshing device 6 for threshing operation and the like, and a Glen tank 7 for storing a grain which is a processed product threshed behind the control unit 4 and on the right side of the threshing device 6.

  The pre-processing unit 3 includes a divider 8 for weeding cereals in the field, a pulling device 9 for raising the cereals weeded by the divider 8, and a scraper for scooping the tip and side of the culm. Holding device 11, cutting blade 12 that cuts the stocker side of the grain pod, stock source transporter 13 that sandwiches the stocker side of the harvested cereal that has been cut from the field, and the stock transporter 13 and a handling depth transport body 14 that transports the harvested cereal rice cake taken over at the terminal end side to the threshing device 6 side, and the handling depth transport body 14 transports the stock side of the harvested grain meal base. It is comprised from the chain 16 and the tip side conveyance body 17 which conveys the tip side of the harvested cereal rice cake (refer FIG. 2).

  Further, the handling depth transport body 14 is supported so as to be capable of rotating up and down with the transport end side as a fulcrum, and an actuator for adjusting the handling depth for adjusting the rotational position of the handling depth transport body 14 (illustrated). Not) and a handling depth sensor 18 for detecting the length of the harvested grain culm conveyed by the handling depth conveying body 14 is provided. With this configuration, the handling depth transport body 14 adjusts the clamping position of the harvested cereal mash that is transported by the stock chain 16 via the control unit 50 described later, so that the handling depth of the chopped cereal meal is increased. Can be kept optimal.

  Further, the handling depth transport body 14 is provided with a stalk detection sensor (a stalk detection means) 19 for detecting the harvested sorghum being transported in the vicinity of the front side of the handling depth sensor 18. According to the culm detection sensor 19, it is possible to detect whether or not the harvested culm has passed over the culm detection sensor 19.

  The threshing device 6 includes a feed chain 21 that sandwiches the stock side of the harvested cereals delivered from the handling depth carrier 14 on the pretreatment unit 3 side disposed on the left and right sides, and feeds the feed chain 21 backward. 21. A threshing unit (not shown) that performs threshing work on the harvested cereal rice cake that is being conveyed backward by 21, and a processed product that has been arranged and threshed below the threshing unit is used as a grain and dust such as sawdust. A sorting unit (not shown) for sorting and a discharging unit 22 for discharging the threshing-treated cereal from the right side of the rear end are provided.

  The harvested cereals harvested by the pre-processing unit 3 having the above configuration and conveyed toward the traveling machine body 2 are transferred to the feed chain 21 and are conveyed rearward along the threshing device 6 by the feed chain 21. In this backward conveyance process, the harvested cereal meal is threshed by the handling cylinder 15 or the like in the threshing section of the threshing device 6 and becomes waste. The waste is transported rearward by the waste transport body 23 and is discharged as it is or after being cut out from the discharge portion 22 at the rear of the traveling machine body 2.

  On the other hand, the processed product that has been threshed by the threshing unit falls from the threshing unit, and is introduced into a sorting unit (not shown) arranged on the lower side of the threshing unit that includes a rocking sorter and a red pepper fan. In the sorting section, the processed material is sorted into sawdust and the like and grains such as straw. The sorted sawdust and the like are discharged out of the machine from the discharge unit 22 at the rear of the traveling machine body 2, and the grains and the like are conveyed and accommodated in the Glen tank 7.

  Next, a power transmission structure will be described based on FIG. FIG. 3 is a power transmission system diagram of the combine. A traveling pulley 26 and a work pulley 27 that rotate integrally with the output shaft 24 are fixedly attached to the output shaft 24 of the engine 10 installed on the traveling machine body 2 side.

  The power of the travel pulley 26 is input to the transmission 28 via the travel transmission belt 25. The power input to the transmission 28 is steplessly transmitted by the traveling HST 29, which is a hydraulic stepless transmission, and then input to the traveling transmission mechanism 31. The power input to the traveling transmission mechanism 31 is the left and right crawlers. The type traveling devices 1 and 1 are driven.

  The power of the work pulley 27 is belt-transmitted to the work transmission shaft 32, and by the power of the work transmission shaft 32, the pretreatment unit 3, the feed chain 21, the threshing unit, the sorting unit, and the waste transporting body 23. And are driven.

  Specifically, it is composed of a work transmission belt 34 that is wound around the work pulley 27, a work transmission pulley 33 that rotates together with the work transmission shaft 32, and a tension pulley that adjusts the tension of the work transmission belt 34. A work clutch 36 for interrupting transmission of engine power to the work transmission shaft 32 is provided, so that power from the engine can be intermittently transmitted to the work transmission shaft 32.

  A cutting-side pulley 37 that rotates integrally with the work transmission shaft 32 is attached and fixed in the middle of the work transmission shaft 32, and power is transmitted to the cutting mission case 39 via the cutting input shaft 38. Specifically, the cutting side pulley 37, the cutting side transmission pulley 41 that rotates integrally with the cutting input shaft 38, and the cutting transmission belt 42 wound around the cutting pulley 37 and the cutting side transmission pulley 41, work The power transmitted to the transmission shaft 32 is transmitted to the cutting input shaft 38, whereby the power is input to the cutting mission case 39.

  The mowing transmission case 39 includes a mowing HST30 that is a hydraulic stepless transmission that continuously changes the power input from the mowing input shaft 38, and the power shifted by the mowing HST30 on the preprocessing unit 3 side. The power output from the pre-processing output shaft 40 is transmitted to the pre-processing unit 3 side, and the cutting blade 12, the pulling device 9, and the depth of handling are transmitted to the pre-processing output shaft 40. The carrier 14 and the like are driven.

  The cutting HST 30 is configured to continuously change the driving force output to the pre-processing output shaft 40 in conjunction with the vehicle speed by vehicle speed interlocking control by the control unit 50 described later.

  In addition, a bevel gear 43 for transmitting power to the threshing portion side is provided in the middle portion of the work transmission shaft 32, and the power transmitted to the bevel gear 43 performs threshing work in the threshing portion. The power is transmitted to the handling cylinder 15 and the waste transporting body 23 that transports the waste that has been threshed backward toward the discharge unit 22.

  Further, a drive sprocket 44 for driving the feed chain 21 is provided on the terminal side of the work transmission shaft 32, so that the feed chain 21 can be transported and driven at a constant speed regardless of the vehicle speed.

  As described above, the preprocessing unit 3 is configured such that the drive speed is changed in conjunction with the vehicle speed, while the feed chain 21 is driven at a constant speed regardless of the vehicle speed.

  Next, the control unit will be described with reference to FIG. FIG. 4 is a main part perspective view showing the control part. The control unit 4 includes a seat 46 on which an operator is seated, a front panel 47 disposed on the front side of the seat 46, a multi-steering lever 48 disposed on the right side of the front panel 47, and left and right lateral sides of the seat 46. The side panel 49 disposed on the (left) side, the main transmission lever 51 disposed on the front side of the side panel 49, the auxiliary transmission lever 52 disposed on the left and right outside of the main transmission lever 51, and the auxiliary transmission A clutch lever 53 provided on the rear side of the lever 52 is provided. (See FIGS. 1 and 4).

  The multi-steering lever 48 is configured to swing back and forth and right and left in a state of protruding upward, and the steering body 2 can be steered by swinging left and right of the steering lever. The pre-processing unit 3 can be moved up and down by swinging the steering lever 48 back and forth.

  A momentary trigger switch 54 is provided on the front side of the upper end of the steering lever 48.

  According to this configuration, the control unit 50 operates the multi-steer lever 48 and the trigger switch 54 to operate the preprocessing unit 3 in the retreat position during the non-reaping operation or the harvesting operation of the cereal in the field. It is configured to be able to execute automatic lifting control that moves up and down to a position.

  The main transmission lever 51 can be swung forward from the front-rear neutral position by swinging the left-right one side (right side in the illustrated example) at the front-rear neutral position, while at the front-rear neutral position. The swing operation from the front / rear neutral position to the rear side can be performed by swinging the left / right other side. The main transmission lever 51 travels as the travel HST 29 is steplessly increased toward the forward travel side as the forward swing amount from the front / rear neutral position increases, and as the rear swing amount from the front / rear neutral position increases. The HST 29 is continuously increased to the reverse travel side.

  A grip 51a is formed at the upper end portion of the main transmission lever 51, and a momentary type take-up switch 56 that can be pushed while gripping the grip 51a is provided on the side of the grip 51a. On the back side, an alternate type lodging switch 57 is provided (see FIG. 4).

  With the above-described configuration, the operator cuts the grain culm in the field by driving while driving the preprocessing unit 3 with the main transmission lever 51 in a state where the preprocessing unit 3 is lowered to the working position by the multi-steering lever 48. It is possible to carry out work traveling.

  At this time, the control unit 50 is configured to execute vehicle speed interlocking control in which the driving speed of the preprocessing unit 3 is steplessly shifted in conjunction with the vehicle speed. Further, the control unit 50 controls the lodging trimming control for increasing the driving speed of the preprocessing unit 3 linked to the vehicle speed by the lodging switch 57 and the preprocessing unit 3 regardless of the vehicle speed by the take-in switch 56. It is configured to be able to perform forced scraping control that is driven at a constant speed. Details will be described later.

  Next, the control unit will be described with reference to FIGS. FIG. 5 is a block diagram of the control unit, FIG. 6 is a characteristic graph showing the relationship between the driving speeds of the preprocessing unit and the feed chain, and the vehicle speed, and FIG. 7 is a flowchart of continuous control. . From the example shown in the figure, the cutting HST 30 and the work clutch 36 are connected to the output side of the control unit 50, while the vehicle speed sensor 61, which is a rotation sensor or the like that detects the vehicle speed, is connected to the input side. The lift position detecting means 62 for detecting the lift position of the preprocessing unit 3, the culm detection sensor 19, the scratching switch 56, and the lodging switch 57 are connected.

  When it is detected by the vehicle speed sensor 61 and the lift position detection means 62 that the control unit 50 is in the operation of cutting the grain culm, the drive speed of the preprocessing unit 3 is A vehicle speed interlocking control (normal mode) in which a stepless speed change is interlocked with the vehicle speed detected by the vehicle speed sensor 61 is executed, and an ON operation of the lodging switch 57 is detected during the work travel. If so, the pre-processing unit 3 that is driven in conjunction with the vehicle speed is configured to execute the lodging trimming control (inclination mode) that is driven at a higher speed than during the vehicle speed-related control (FIG. 6). reference).

  According to the vehicle speed interlocking control, as shown in FIG. 6, the driving speed of the preprocessing unit 3 increases in proportion to the increase in the vehicle speed. Even if the amount of harvesting / conveying amount per unit time during the harvesting operation increases, the preprocessing unit 3 is driven faster in accordance with this, so that the harvested cereal meal is not clogged in the preprocessing unit 3 It can be smoothly transported backward.

  Further, according to the lodging trimming control, the amount of cereals harvested from the field is large, and in the vehicle speed interlocking control (normal mode), the reaping and transporting of the cereals by the preprocessing unit 3 cannot catch up, and within the preprocessing unit 3 Even when the harvested cereal meal is likely to be jammed, the pretreatment unit 3 is driven at a higher speed, thereby cutting the cereal meal by the pretreatment unit 3 and conveying the harvested cereal meal back to the threshing device 6 side. It can be done smoothly.

  Further, according to the above-described vehicle speed interlocking control and overturning trimming control, the driving speed of the preprocessing unit is changed according to the vehicle speed at which the amount of grain harvesting per unit time increases or decreases, so the traveling machine body 2 is stopped. If so, the driving of the preprocessing unit 3 is also stopped.

  Next, in the state where the stop of the traveling machine body 2 is detected by the vehicle speed sensor 61, the control unit 50 detects the vehicle speed when the pushing operation (ON operation) of the momentary type scratching switch 56 is detected. Regardless of whether or not, the forced scratching control (forced scratching mode) for driving the preprocessing unit 3 at a constant medium speed is configured to be executable (see FIG. 6).

  Specifically, according to the forced scraping control, the pretreatment unit 3 and the threshing device 6 are driven at a constant speed in a state where the traveling machine body 2 is stopped, and the rearward to the threshing device 6 of the harvested cereal culm. Transport and threshing of harvested cereals can be performed. Further, when the release operation for ending the push operation from the state in which the push operation of the take-in switch 56 is continued, that is, the push operation of the take-in switch 56 is continued, the forced take-up control is finished, and the traveling machine body Since the operation mode is switched to the normal mode (or the lying trimming mode) with 2 stopped, the driving of the preprocessing unit 3 and the threshing device 6 is also stopped.

  In addition, the control unit 50 does not immediately stop driving the preprocessing unit 3 and the threshing device 6 when an OFF operation of the scratching switch 56 is detected during execution of the forced scratching control. It is comprised so that the continuous control by which the drive of the pre-processing part 3 and the threshing apparatus 6 may be continued for a predetermined time is performed. Incidentally, the ON operation and the OFF operation of the forced take-up control may be configured to be operable by a pedal operation tool or a lever operation tool instead of the take-in switch 56. Hereinafter, the continuous control will be described.

  Specifically, as shown in FIG. 7, when the forced scraping switch 56 is detected to be turned off, the continuation control is performed first when the culm detection sensor 19 cuts the grain that is being conveyed backward. It is determined whether or not to detect the presence or absence of wrinkles (S11). Next, the control unit 50 detects whether or not the harvested wheat straw that is being conveyed is detected by the wheat straw detection sensor 19 (S12). In the case where the harvested culm being conveyed is detected by the culm detection sensor 19, the OFF operation of the forced pick-up switch 56 is detected, and during a predetermined time (preprocessing extension time), The driving of the preprocessing unit 3 is continued (S13), and then the driving of the preprocessing unit 3 is stopped via the cutting HST30 (S14). At this time, during the pretreatment extension time, at least the grain culm held by the pulling device of the pretreatment unit 3 is cut by the cutting blade 12, and the chopped cereal is received by the feed chain 21 side. The time required to be passed is set.

  According to the continuation control of the configuration, when the culm detection sensor 19 detects the culm that is being conveyed backward by the pre-treatment unit 3 when the forced scratching switch 56 is turned off, the pre-processing unit Since the harvested cereal meal in 3 is reliably conveyed to the threshing device 6 side, it is possible to prevent the drive of the pretreatment unit 3 from being stopped while the harvested cereal meal remains in the pretreatment unit 3.

  Moreover, the continuation control by this control part 50 is the threshing extension set longer than the said pre-processing extension time about the said threshing apparatus 6 (and feed chain 21), when continuing the drive of the pre-processing part 3 is performed. You may comprise so that a drive may be continued during time and the drive of the threshing apparatus 6 may be stopped via the work clutch 36 after that. At this time, the threshing extension time is at least that the grain culm held by the pulling device 9 of the preprocessing unit 3 is harvested by the cutting blade 12, and the harvested corn straw is conveyed backward by the feed chain 21. However, the threshing process is performed by the threshing device 6 and a predetermined time required until the threshing device 23 is discharged from the discharge unit 23 by the waste transporting body 23 is set.

  In addition, the said control part 50 is the pre-processing part 3 and the threshing, when the OFF operation of the forced biting switch 56 is detected, and the harvested grain sorghum being conveyed is not detected by the cereal detection sensor 19. Without extending the drive of the device 6, the drive is stopped and the forced scratch control is immediately terminated (see FIG. 7). According to this configuration, when it is detected that no harvested grain remains in the pre-processing unit 3 at the end of the forced scraping control, the extension drive at the end of the forced scraping is not executed, so power loss is reduced. Can be suppressed.

  According to the continuation control of the configuration, when the end of forced scraping by the forced scraping control is operated, when the pre-processing unit 3 detects the harvested cereal rice cake being conveyed backward, Is passed from the pretreatment unit 3 to the feed chain 21 of the threshing device 6 and is continuously discharged until the pretreatment unit 3 and the threshing device 6 are discharged from the discharge unit 22.

  Thereby, it is possible to automatically prevent the harvested cereal from remaining in the pre-processing unit 3 and the threshing device 6 due to the completion of execution of the forced scraping control, so the operator visually confirms the state of conveyance of the harvested cereal. The turning-off switch 56 can be turned off without any trouble.

  Moreover, the said continuous control is comprised so that the said continuous drive of the pre-processing part 3 and the threshing apparatus 6 after the take-in switch 56 is turned off can be stopped.

  More specifically, the control unit 50 turns the scraping switch 56 ON again while the preprocessing unit 3 and the threshing device 6 are continuously driven along with the termination of the forced scraping control by the OFF operation of the scraping switch 56. When an operation is detected, the continuous drive of the preprocessing unit 3 and the threshing device 6 being executed can be stopped (cancelled) halfway.

  In addition, the control unit 50 is also executing the front running while the pre-processing unit 3 and the threshing device 6 are continuously driven even when the forward traveling of the traveling machine body 2 or the lifting / lowering operation of the pre-processing unit 3 is detected. You may comprise so that the continuous drive of the process part 3 and the threshing apparatus 6 may be stopped on the way (cancellation).

  According to this configuration, since the continuation control of the preprocessing unit 3 and the threshing device 6 executed by the turning-off operation of the picking switch 56 can be stopped by the pressing operation of the picking switch 56 again, the continuous driving is performed. Can be smoothly performed. Moreover, since it is not necessary to separately provide an operation tool for stopping the continuous drive of the pretreatment unit 3 and the threshing device 6, the number of parts can be reduced and the cost can be kept low.

  Next, different points from the above will be described with reference to FIG. FIG. 8 is a power transmission system diagram of a combine according to another embodiment.

  The mowing transmission case 39 includes a mowing HST30 that is a hydraulic stepless transmission that continuously changes the power input from the mowing input shaft 38, and the power shifted by the mowing HST30 to the feed chain 21 side. A feed chain drive shaft 66 for outputting and a pre-processing output shaft 40 for outputting the power shifted by the cutting HST 30 to the pre-processing unit 3 side are provided.

  According to this configuration, the preprocessing unit 3 and the feed chain 21 are configured such that the driving speed is linked to the vehicle speed by the vehicle speed interlocking control by the control unit 50, and the handling cylinder 20 of the threshing device 6 and The waste transporting device 23 is configured to be driven at a constant speed regardless of the vehicle speed.

  In addition, when the forcing control is executed by turning on the tacking switch 56, the control unit 50 performs the preprocessing unit 3 and the feed chain even when the traveling machine body 3 is stopped. The forced scraping that drives 21 at a constant speed is executed.

  Furthermore, when the control unit 50 detects that the culm detection sensor 19 detects the chopped culm being conveyed when the turning-off switch 56 is detected to be off, the control unit 50 detects the pre-processing unit 3 and the feed chain 21. The continuous control for extending the driving time by a predetermined time (preprocessing extension time) is executed. At this time, the pretreatment extension time set in advance is that at least the pretreatment unit 3 grasps the culm in the field, and then the chopping blade 12 is used to cut the cereal and the feed chain 21 is fed from the pretreatment unit 3 to the feed chain 21. The time required until the conveyed harvested cereal meal is passed to the excretion delivery apparatus 23 is set.

3 Pre-processing unit 6 Threshing device 19 Wheat flour detection sensor (wheat flour detection means)
21 Feed chain 29 Harvesting HST (continuation means)
50 control unit 56 take-in switch (forced take-in operation tool, canceling means)
61 Vehicle speed sensor (vehicle speed detection means)

Claims (5)

A pre-processing unit (3) for harvesting and transporting cereals backward;
A threshing device (6) for threshing cereals;
A feed chain (21) for conveying cereals backward along the threshing device (6);
Vehicle speed detection means (61) for detecting the vehicle speed;
A control unit (50),
The control unit (50) controls the drive of the preprocessing unit (3) based on the vehicle speed detected by the vehicle speed detection means (61), and when the vehicle speed is not detected, the drive of the preprocessing unit (3). If the operation of the forced scraping operation tool (56) is detected while the vehicle speed interlocking control is stopped, the execution of the vehicle speed interlocking control is stopped and the preprocessing unit (3 In the combine configured to stop the execution of the forced scratching control when the forced scraping operation tool (56) is detected to be released.
The feed chain (21) is configured to be driven at a constant speed regardless of the vehicle speed,
The controller (50) does not stop the execution of the forced take-up control for a predetermined time even when the operation release of the forced take-up operation tool (56) is detected during the execution of the forced take-up control. And a continuation means (29) for continuing the process as it is, and the rearward transfer of the harvested cereal mash cut by the forced rake control to the threshing device (6) side by the continuation means (29). A pre-processing unit (3) for harvesting and transporting cereals backward;
A threshing device (6) for threshing the harvested cereal meal;
A feed chain (21) for conveying the harvested cereal meal backward along the threshing device (6);
Vehicle speed detection means (61) for detecting the vehicle speed;
A control unit (50),
The control unit (50) controls the drive of the preprocessing unit (3) based on the vehicle speed detected by the vehicle speed detection means (61), and when the vehicle speed is not detected, the drive of the preprocessing unit (3). If the operation of the forced scraping operation tool (56) is detected while the vehicle speed interlocking control is stopped, the execution of the vehicle speed interlocking control is stopped and the preprocessing unit (3 In the combine configured to stop the execution of the forced scratching control when the forced scraping operation tool (56) is detected to be released.
The feed chain (21) is configured to drive in conjunction with the vehicle speed detected by the vehicle speed detection means (61),
The controller (50) does not stop the execution of the forced take-up control for a predetermined time even when the operation release of the forced take-up operation tool (56) is detected during the execution of the forced take-up control. And a continuation means (29) that continues as it is, and the continuation means (29) completes the threshing work of the harvested cereal mash that has been harvested by the forced scraping control. The culm detection means (19) for detecting that the culm cut by the pre-processing unit (3) is at a predetermined transport position,
The said control part (50) performs execution of the forced biting control by the said continuation means on the basis of at least one condition that the cereal detection means (19) has detected the culm. Combine in any one of. The said control part (50) has a cancellation means which cancels this execution continuation while the execution of the forced scratch control by the said continuation means (29) is performed. Combine. The combine according to claim 4, wherein the control unit (50) performs cancellation by a canceling means by a predetermined operation performed by the forced scraping operation tool (56).

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