JP7704084B2 - combine - Google Patents

Description

This invention relates to a combine harvester that has a front panel in front of the driver's seat with an operating lever for raising and lowering the harvesting device, and a side panel on the left side with a mode select switch for changing the working mode, etc. according to the planting condition of the stalks.

Conventionally, a side panel provided on the left side of the driver's seat is formed of a side panel section that extends horizontally in the front-to-rear and left-to-right directions, and a control panel section that is formed with an upward sloping leftward slope from the left end of the side panel section, and a speed change lever that increases or decreases the traveling speed of the traveling device and a threshing lever that operates the threshing clutch, etc. are provided on the side panel section, and a work light switch that turns on the work light and a threshing depth dial that adjusts the threshing depth of the reaping device are provided on the control panel section.

JP 2008-104387 A

However, the method described in Patent Document 1 had the problem that the operation of the threshing clutch, etc. was cumbersome.

Therefore, the present invention aims to provide a combine harvester that allows easy operation and checking of the combine harvester using the side panel.

The present invention, which solves the above problems, is as follows:

That is, the invention described in claim 1 relates to a combine harvester having a traveling device (2) provided under a machine frame (1) on which an engine (E) is mounted, a harvesting device (3) for harvesting stalks in a field provided in front of the machine frame (1), a threshing device (4) for threshing the stalks provided on the rear left side of the harvesting device (3), a control section (5) on which an operator sits provided on the rear right side of the harvesting device (3), and a speed change mechanism for changing the output rotation of the engine (E) and outputting it toward the traveling device (2), wherein a front panel (11) is provided in front of a driver's seat (10) of the control section (5), This combine has a side panel (20) on the left side, and is provided on the side panel (20) with a speed change lever (24) for operating a speed change mechanism that changes the output rotation of the engine (E), and a mode change operation unit (90) for performing a predetermined mode change, the mode change operation unit (90) separately comprising an operation unit (91) for performing a mode change operation, and a display unit (92) for displaying the operation result of the operation unit (91), and the operation unit (91) is capable of changing both the gear ratio of the speed change mechanism and the connection state of the clutches of the harvesting device (3) and the threshing device (4) by a single operation.

The invention described in claim 2 is a combine harvester described in claim 1, in which the mode change operation unit (90) is provided with a first switch (91A) for increasing the traveling speed of the traveling device (2) and a second switch (91B) for decelerating the traveling speed of the traveling device (2), and when the first switch (91A) is operated for a predetermined time, the mode is changed from a work mode in which the traveling device (2), the harvesting device (3), and the threshing device (4) are driven to a field movement mode in which the traveling device (2) is driven and the drive of the harvesting device (3) and the threshing device (4) is stopped, and when the second switch (91B) is operated for a predetermined time, the mode is changed from the field movement mode to the work mode.

The invention described in claim 3 is the combine harvester described in claim 2, in which the work modes are a first work mode in which the traveling speed of the traveling device (2) is high, a second work mode in which the traveling speed of the traveling device (2) is medium, and a third work mode in which the traveling speed of the traveling device (2) is low, and when the second switch (91B) is operated to change the mode from the second work mode to the third work mode, the reaping speed of the reaping device (3) is switched from low to medium or high.

The invention described in claim 4 is the combine described in claim 3, in which a third switch (91C) is provided between the first switch (91A) and the second switch (91B), and when the third switch (91C) is operated, the operation of the reaping device (3) and the threshing device (4) is stopped, and when the third switch (91C) is operated for a predetermined time, the reaping device (3) and the threshing device (4) are driven.

According to the invention described in claim 1, the results of the operation of the operation unit (91) can be easily confirmed.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, it is possible to change the mode while preventing erroneous operation by the operator. Also, the traveling speed of the traveling device (2) can be increased to a high speed, allowing for quick movement between fields.

According to the invention described in claim 3, the lifting device of the harvesting device (3) can efficiently lift and harvest fallen stalks in the field.

According to the invention described in claim 4, the harvesting device (3) and the threshing device (4) can be driven while preventing erroneous operation by the operator.

FIG. FIG. FIG. FIG. 2 is a front perspective view of the cockpit and side panel. A front view of the cockpit and side panel. FIG. FIG. FIG. 4 is a right side view of the side panel with the cover removed. FIG. FIG. FIG. FIG. 2 is a rear perspective view of the cockpit, side panel, and lift plate. FIG. 2 is a rear perspective view of the side panel and lift plate; FIG. 13 is a right side view of the side panel and the lift plate. FIG. 2 is a front perspective view of the control section with the side panels in the control position. This is a right side view of the control section, with the side panel in the control position. FIG. 2 is a front perspective view of the control section with the side panels in the open position. This is a right side view of the control section with the side panel in the open position. FIG. 1 is a left side view of the side panel and lift plate in the piloting position. FIG. 1 is a rear view of the cockpit and side panels and lift plate in the cockpit position. FIG. 13 is a left side view of the side panel and the lift plate in the open position. FIG. 1 is a rear view of the cockpit and side panels and lift plate in the cockpit position. 3 is a transmission diagram of the output rotation of the engine. FIG. 2 is a plan view of the control section with the monitor removed. FIG. 13 is a left side view of the side panel supported on the left wall of the control section. FIG. 13 is a right side view of the side panel supported on the left wall of the control section. FIG. 2 is a front perspective view of the handle lever and side panel of the control section. FIG. 4 is a plan view of the mode select switch. FIG. 13 is an explanatory diagram of the display unit in a standard operation mode. FIG. 13 is an explanatory diagram of the display section in a standard low-speed operation mode. FIG. 13 is an explanatory diagram of the display section in a lowering operation mode. FIG. 13 is an explanatory diagram of the display unit in a farm field movement mode.

As shown in Figures 1 and 2, the combine harvester has a traveling device 2 consisting of a pair of left and right crawlers that travel on the soil surface on the underside of the machine frame 1, a harvesting device 3 that harvests the stalks in the field is provided on the front side of the machine frame 1, a threshing device 4 that threshes and sorts the harvested stalks is provided on the rear left side of the harvesting device 3, and a control unit 5 on which the operator rides is provided on the rear right side of the harvesting device 3.

Below the control unit 5 is an engine room 6 housing an engine E, and behind the control unit 5 is a grain tank 7 for storing threshed and sorted grains. Behind the grain tank 7 is a discharge auger 8 consisting of a vertically extending grain lifting section for discharging grains to the outside and a horizontal discharge section extending in the front-to-rear direction.

As shown in Figures 3 to 5, a front panel 11 is provided in front of the operator's seat 10 of the control unit 5. A rod 12 extending in the left-right direction that is held by the operator to maintain the control position is provided on the upper side of the front panel 11, and an operating lever 13 for raising and lowering the harvesting device 3 is provided on the right side of the front panel 11.

A side panel 20 is provided on the left side of the cockpit 10 of the control section 5. The side panel 20 is formed from a side panel section (the "first panel section" in the claims) 21 extending in the front-rear direction and a control panel section 22 provided on the left side of the side panel section 21, and the lower part of the side panel section 21 is covered with a cover 23. A monitor 15 that displays the rotation speed of the output rotation of the engine E and the like is provided on the front side of the side panel section 21. Note that, although the side panel section 21 and the control panel section 22 are formed integrally in this embodiment, they can also be formed separately.

At the front of the side panel 21, there is provided a gear shift lever 24 for operating the hydraulic continuously variable transmission 16, which increases/decreases the output rotation of the engine E and switches the direction of rotation, and behind the gear shift lever 24, there is provided a transmission 17 for increasing/decreasing the output rotation of the hydraulic continuously variable transmission 16, and a mode select lever 25 for operating the reaping clutch 18 and threshing clutch 19 provided in the transmission path of the output rotation of the engine E.

When the shift lever 24 is in the neutral position, the output rotation of the hydraulic continuously variable transmission 16 becomes zero. When the shift lever 24 is tilted forward from the neutral position, the rotation direction of the output rotation of the hydraulic continuously variable transmission 16 becomes the same forward rotation as the rotation direction of the output rotation of the engine E, and when the tilt angle of the forward tilt position is increased, the output rotation of the hydraulic continuously variable transmission 16 becomes high speed, and when the tilt angle of the front tilt position is decreased, the output rotation of the hydraulic continuously variable transmission 16 becomes low speed. When the shift lever 24 is tilted backward from the neutral position, the rotation direction of the output rotation of the hydraulic continuously variable transmission 16 becomes reverse rotation opposite to the rotation direction of the output rotation of the engine E, and when the tilt angle of the rear tilt position is increased, the output rotation of the hydraulic continuously variable transmission 16 becomes high speed, and when the tilt angle of the rear tilt position is decreased, the output rotation of the hydraulic continuously variable transmission 16 becomes low speed.

When the mode select lever 25 is tilted forward, the reaping clutch 18 and threshing clutch 19 are disconnected and the operation of the reaping device 3 and threshing device 4 is stopped. When the mode select lever 25 is in the neutral position, the reaping clutch 18 is connected and the reaping device 3 is driven, and the threshing clutch 19 remains disconnected and the operation of the threshing device 4 is continued to be stopped.

When the mode select lever 25 is tilted backward, the threshing clutch 19 is connected and the threshing device 4 is driven, and the reaping clutch 18 remains connected and the reaping device 3 continues to drive.

When the mode select lever 25 is in the neutral position, the output rotation of the hydraulic continuously variable transmission 16 transmitted to the transmission 17 is transmitted to the traveling device 2 without being accelerated or decelerated, when the mode select lever 25 is in the forward tilt position, the rotation is decelerated and transmitted to the traveling device 2, and when the mode select lever 25 is in the rearward tilt position, the rotation is accelerated and transmitted to the traveling device 2.

A protective cover 50 is provided on the lower left side of the control panel section (the "second panel section" in the claims) 22 to protect the electrical equipment 52 provided on the right side of the left wall 61 of the cabin 60. This allows multiple electrical equipment 52 to be installed in one place, making wiring easy and also easy to replace the electrical equipment 52.

As shown in FIG. 6, the switch area 26 facing the shift lever 24 on the control panel 22 is provided with a switch 26A for changing the cutting height of the cutting device 3, and the dial area 27 facing the mode select lever 25 on the control panel 22 is provided with a dial 27A for raising and lowering the temperature inside the cabin 60. This allows the operator to easily operate the switch 26A and dial 27A without bending over and taking their hands off the shift lever 24 and mode select lever 25, thereby improving driving safety and operability.

As shown in FIG. 7, the length of the portion of the mode select lever 25 that extends upward from the side panel portion 21 is shorter than the length of the portion of the gear shift lever 24 that extends upward from the side panel portion 21. This prevents the mode select lever 25 from blocking the operator's view.

The length of the switch area 26 in the front-to-rear direction is longer than the length of the dial area 27 in the front-to-rear direction, and the length of the switch area 26 in the up-to-down direction is longer than the length of the dial area 27 in the up-to-down direction. This allows a switch 26A with a large operating portion to be provided in the switch area 26, further improving operability. In addition, the switch area 26 can cover the upper side of the protective cover 50, preventing dust and the like from accumulating on the protective cover 50.

As shown in FIG. 8, the base of the gear shift lever 24 is pivotally fixed to the front of the hanging portion 21A that extends downward from the left end of the side panel portion 21, and the pivot angle of the gear shift lever 24 is measured by an angle sensor 24A such as a potentiometer. The base of the mode select lever 25 is pivotally fixed to the rear of the hanging portion 21A, and the pivot angle of the mode select lever 25 is measured by an angle sensor 25A such as a potentiometer.

In a side view, the multiple dials 27A provided in the dial area 27 are provided at a predetermined interval on the virtual line L of the downward rearward inclination, and the dials 27A provided in the front part of the dial area 27 are provided in a position that overlaps with the grip of the mode select lever 25 when in the forward tilted position. This allows the operator to more easily operate the dials 27A without bending forward and releasing the mode select lever 25. In this embodiment, the dials 27A provided in the middle part of the dial area 27 are provided in a position that overlaps with the grip of the mode select lever 25 when in the neutral position, and the dials 27A provided in the rear part of the dial area 27 are provided in a position that overlaps with the grip of the mode select lever 25 when in the backward tilted position.

The front part of the side panel 21, i.e., the part where the groove through which the gear shift lever 24 is inserted is formed, is formed approximately horizontally. The rear part of the side panel 21, i.e., the part where the groove through which the mode select lever 25 is inserted is formed, is formed with a gentle downward slope toward the rear. This allows the gripping portion of the mode select lever 25 in the neutral position or in the rearward tilted position to be positioned a predetermined distance above the upper surface of the rear part of the side panel 21.

As shown in FIG. 9, the upper part of the hanging portion 21A of the side panel portion 21 is fixed to a front-rear frame 30 made of square pipes extending in the front-rear direction. The rear part of the front-rear frame 30 is fixed to the upper part of the right surface of a swing plate 32 that is rotatably fixed to a support shaft 31 (the "first support shaft" in the claims). This allows the side panel 20 to be swung around the support shaft 31, and moved between an operating position in which the longitudinal direction of the side panel 20 is aligned with the front-rear direction, and an open position in which the longitudinal direction of the side panel 20 is aligned with the up-down direction.

The swing plate 32 is formed from a plate portion 32A that extends in the front-rear and up-down directions and is rotatably fixed to the support shaft 31, and a rib portion 32B that stands upright at the middle of the front-rear direction on the left surface of the plate portion 32A, and the rear portion of the front-rear frame 30 is fixed to the left end portion of the rib portion 32B. This suppresses deformation of the swing plate 32 and allows the side panel 20 to swing smoothly.

Connecting members 33 are provided on the underside of the front-rear frame 30, extending downward at a predetermined distance in the front-rear direction, and a front-rear pipe 34 made of a round pipe extending in the front-rear direction is provided at the bottom of the connecting members 33. The rear of the front-rear pipe 34 is curved to the right and then fixed to the front lower part of the right surface of the swing plate 32. Note that in this embodiment, the connecting member 33 is provided horizontally in the front-rear direction, but it can also be provided at a rearward downward incline.

The underside of the monitor 15 is fixed to the front of a bendable support pipe 36 via a pin 35 extending in the left-right direction. The rear of the support pipe 36 is fixed to the front of the front-rear pipe 34. This allows the monitor 15 to be moved in conjunction with the side panel 20 around the support shaft 31 between an operating position in which the monitor 15 is located in front of the side panel 20 and an open position in which the monitor 15 is located above the side panel 20.

As shown in Figures 10 and 11, the hanging portion 21A of the side panel portion 21 is provided in a right-side inclined position with its upper portion positioned to the right of its lower portion. This allows the side panel portion 21 to be formed with a gentle downward rightward incline, and the gear shift lever 24 and the mode select lever 25 to be provided in a right-side inclined position with their upper portion positioned to the right of their lower portion, allowing the operator to easily operate the gear shift lever 24 and the mode select lever 25 without having to bend forward.

The intersection angle between the side panel section 21 and the control panel section 22 is approximately 115 degrees. This allows the operator to easily see the switch 26A provided in the switch area 26 of the control panel section 22 and the dial 27A provided in the dial area 27, preventing erroneous operation of the switch 26A, etc.

The upper end of the control panel section 22 is formed at approximately the same height as the upper end of the shift lever 24 in the neutral position. The upper end of the monitor 15 is also formed at approximately the same height as the upper end of the shift lever 24 in the neutral position, and a switch for switching the display screen of the monitor 15 is provided at the bottom of the monitor 15. This allows the operator to more easily operate switches 26A and the like provided in the switch area 26 of the control panel section 22 without having to bend forward.

As shown in Figures 12 and 13, the cockpit 10 is supported by a support member 40B extending in the left-right direction connecting the front parts of a pair of left and right support members 40A extending in the fore-aft direction of a movable frame 40 that can move in the fore-aft direction, and a support member 40C erected at the rear parts of the pair of left and right support members 40A.

The movable frame 40 is slidably attached to the upper surface of a pair of fixed frames 41 made of angle bars extending in the front-rear direction below the movable frame 40.

A pair of fixed frames 41 on the left and right are fixed to a rectangular lift plate 42, which is supported by a lift device 43 having a rod that moves up and down. A lever 44 that maintains and releases the position of the pilot's seat 10 is provided on the front right part of the moving frame 40 on the lift plate 42. This allows the operator to move the pilot's seat 10 in the front-rear and up-down directions to a position that suits his or her body shape.

A connecting member 45 extending in the left-right direction is provided at the rear of a pair of left and right fixed frames 41 attached to a lift plate 42 that moves up and down. The connecting member 45 is formed of a left-right extending portion 45A that extends in the left-right direction between the pair of left and right fixed frames 41, and a top-bottom extending portion 45B that extends leftward from the left fixed frame 41 and then curves approximately 90 degrees upward.

A support shaft 31 extending in the left-right direction is provided at the top of the vertical extension portion 45B. A collar 46 that prevents the swing plate 32 fitted onto the support shaft 31 from falling off and a fastening member 47 such as a nut that fixes the collar 46 to the support shaft 31 are provided at the left part of the support shaft 31. In addition, a restriction plate 48 that restricts the swing angle of the side panel 20 is provided at the right part of the support shaft 31. As a result, the cockpit 10 and the side panel 20 move in conjunction with each other in the vertical direction, and even if the cockpit 10 is moved in the front-rear direction, the side panel 20 does not move in conjunction with it, so the operator can easily move the cockpit 10 to a position that suits his or her body shape.

In this embodiment, the moving frame 40, the fixed frame 41, and the lift plate 42 are collectively referred to as the cockpit support member (the "first cockpit support member" in the claims) 10A. Also, in this embodiment, the connecting member 45 on which the support shaft 31 is attached is provided at the rear of the pair of left and right fixed frames 41, but it can be provided on the pair of left and right support members 40A of the moving frame 40. This allows the cockpit 10 and the side panel 20 to move in conjunction with each other in the up-down and front-back directions.

As shown in FIG. 14, a circumferential groove 48A having a predetermined length is formed at a portion of the regulating plate 48 that is spaced a predetermined radius from the support shaft 31, and the right portion of the pin 29 extending in the left-right direction provided at the bottom of the cup holder 28 of the side panel 20 is inserted into the groove 48A. This makes it possible to prevent the side panel 20 from being excessively swung into the open position. The position of the side panel 20 is measured by a sensor 49 provided on the left surface of the regulating plate 48, and when the side panel 20 is moved to the operating position and the distance between the sensor 49 and the pin 29 becomes equal to or less than a predetermined distance, an ON signal is input from the sensor 49 to the controller 52D, and when the side panel 20 is moved to the open position and the distance between the sensor 49 and the pin 29 exceeds the predetermined distance, an OFF signal is input from the sensor 49 to the controller 52D.

As shown in Figures 15 and 16, when the side panel 20 is positioned in an operating position extending in the fore-and-aft direction, the electrical equipment 52 provided on the right side of the left wall 61 of the cabin 60 is covered by the side panel 20. This prevents the operator from accidentally touching the electrical equipment 52 and prevents the harness connected to the electrical equipment 52 from being broken.

As shown in Figures 17 and 18, when the side panel 20 is positioned in an open position extending vertically, a large space is created to the left of the operator. This allows the operator to lean out of the hatch 62 on the left side of the cabin 60 and easily check the state of the stalk jam in the harvesting device 3. In addition, the electrical equipment 52 mounted on the right side of the left wall 61 of the cabin 60 is exposed. This allows the operator to easily remove the protective cover 50 and perform maintenance and replacement work on the electrical equipment 52.

The electrical equipment 52 is mounted on a power distribution plate 51 attached to the left wall 61 of the cabin 60. On the top of the power distribution plate 51, from the front, a fuse 52A, a small relay 52B, and a large relay 52C are provided, and a controller 52D is provided below the fuse 52A and the small relay 52B. In addition, a power supply line 53 that supplies electricity to the small relay 52B extending in the front-rear direction is arranged between the fuse 52A etc. and the controller 52D in the vertical direction. This makes it easy to arrange the power supply line 53 etc., and to easily replace a malfunctioning fuse 52A etc.

As shown in Figures 19 and 20, a hollow portion 31A is formed in the center of the support shaft 31, and a harness 37 that connects the switch 26A and the monitor 15 to the controller 52D is inserted into the hollow portion 31A. This allows the side panel 20 to move smoothly from an operating position to an open position, etc., and also prevents the harness 37 from breaking.

The vertical extension 45B of the connecting member 45 extends leftward from the left fixed frame 41 and then extends upward a predetermined length. As a result, when the side panel 20 is positioned in an operating position extending in the front-rear direction, the upper surface of the side panel portion 21 is positioned opposite the elbow of the operator, allowing the operator to easily operate the gear shift lever 24 and the mode select lever 25.

When the side panel 20 is positioned in an operating position extending in the fore-and-aft direction, the right part of the side panel section 21 and the right part of the monitor 15 provided on the front side of the side panel 20 are arranged to overlap with the left part of the cockpit 10 in rear view. This makes it possible to reduce the length of the cockpit section 5 in the left-right direction.

As shown in Figures 21 and 22, the vertical extension 45B of the connecting member 45 is formed to extend a predetermined length to the left from the left fixed frame 41. As a result, when the side panel 20 is positioned in an open position extending in the vertical direction, the side panel portion 21 can be moved from the operating position to the open position without contact between the right portion of the side panel portion 21 and the left portion of the cockpit 10.

When the side panel 20 is positioned in an open position extending vertically, the shift lever 24 provided on the side panel 20 is located above the backrest of the cockpit 10, and the monitor 15 provided on the front side of the side panel 20 is located above the backrest of the cockpit 10.

<Transmission of engine output rotation>
23, the output rotation of the engine E is transmitted to a hydraulic continuously variable transmission 16 and a transmission 17, which are speed change mechanisms that change the speed of the rotational power of the engine E and output the same. The output rotation of the engine E transmitted to the input shaft of the hydraulic continuously variable transmission 16 is accelerated or decelerated within the hydraulic continuously variable transmission 16 and then output from the output shaft.

The output rotation of the output shaft of the hydraulic continuously variable transmission 16 is transmitted to the transmission 17.

The output rotation of the output shaft transmitted to the input shaft of the transmission 17 is accelerated or decelerated by the transmission 17 and output from the first output shaft and the second output shaft.

The output rotation of the first output shaft, which is accelerated or decelerated by the gear transmission mechanism 17A in the transmission 17, is transmitted to the traveling device 2 and rotates the crawler of the traveling device 2.

The output rotation of the second output shaft, which is accelerated or decelerated by the gear transmission mechanism 17A in the transmission 17 and the gear transmission mechanism 17B provided downstream of it, is transmitted to the harvesting device 3 via the harvesting clutch 18 to drive the lifting device, cutting device, etc. of the harvesting device 3.

This allows the travel speed of the traveling device 2 and the reaping speed of the reaping device 3 to be increased or decreased simultaneously by operating the shift lever 24, so that the travel speed of the traveling device 2 and the reaping speed of the reaping device 3 can be increased or decreased by operating the shift lever 24 according to the state of the stalks in the field, allowing the stalks to be efficiently reaped.

In addition, the output rotation of the engine E is transmitted to the threshing device 4 via the threshing clutch 19 provided on the second path B.

When the side panel 20 is moved from the operating position to the open position, the output signal of the sensor 49 is turned OFF, restricting the start of the engine E and preventing it from running. Also, if the output signal of the sensor 49 is turned OFF while the engine E is running, the operation of the engine E is stopped. This prevents erroneous operation such as sudden acceleration of the traveling device 2 when the side panel 20 is in the open position and maintenance and replacement work of the electrical equipment 52 is being performed, and maintenance and replacement work of the electrical equipment 52 can be performed safely.

In addition, when the output signal of the sensor 49 is turned OFF, it is preferable to stop the drive of the hydraulic continuously variable transmission 16 and regulate the increase or decrease in the output rotation of the engine E. This makes it possible to perform maintenance and replacement work on the electrical equipment 52 more safely.

<Other support forms for side panels>
24 and 25, a handle bar 70 extending in the left-right direction is provided above the front panel 11, with the left portion of the handle bar 70 fixed to the left wall 63 of the control section 5 and the right portion of the handle bar 70 fixed to the right wall 64 of the control section 5. This allows an operator to grasp the left portion of the handle bar 70 and maintain a leaning forward position to easily operate the operating lever 13. Note that in this specification, the left wall 61 of the cabin 60 and the left wall 63 of the control section 5 indicate the same member.

A front portion of a support member 71 extending rearward from the handlebar 70 is provided at a portion of the handlebar 70 facing the support pipe 36 of the side panel 20. In a side view, the support member 71 is formed in a generally trapezoidal shape, and a guide groove 72 that is open at the top and extends downward is formed at the rear portion of the upper edge of the support member 71. The guide groove 72 is preferably formed in an arc shape centered on the support shaft 31.

A pin 75 is provided at the front of the support pipe 36 of the side panel 20, extending from the support pipe 36 toward the left side. When the side panel 20 is moved to the operating position, the pin 75 enters the guide groove 72 and abuts against the lower part of the guide groove 72. On the other hand, when the side panel 20 is moved to the open position, the pin 75 moves to the outside of the guide groove 72.

As a result, the front of the side panel 20 is supported by the guide groove 72, suppressing vibrations that occur in the side panel 20 during driving. In addition, the vertical length of the guide groove 72 is formed so that when the pin 75 abuts against the lower part of the guide groove 72, the front and rear frames 30 of the side panel 20 are approximately horizontal in a side view.

In a side view, when the pin 75 abuts against the lower part of the guide groove 72, the vertical length of the guide groove 72 is formed so that the front and rear frames 30 of the side panel 20 are approximately horizontal. In addition, a thin diameter portion that is thinner than the other parts is formed at the right end of the pin 75, and a collar 76 and a fastening member 77 such as a bolt are provided at the thin diameter portion, and a screw for screwing the fastening member 77 is formed at the thin diameter portion. As a result, the pin 75 can be inserted into the guide groove 72 and the pin 75 can be more firmly engaged at the lower part of the guide groove 72, thereby further suppressing vibrations generated in the side panel 20 during travel. In addition, the pin 75 can be inserted into the guide groove 72 and engaged with the guide groove 72 at a point other than the lower part of the guide groove 72, making it possible to easily adjust the inclination angle of the side panel 20 to be optimal for the operator.

As shown in Figures 26 and 27, a cockpit support member ("second cockpit support member" in the claims) 80 made of channel steel extending in the vertical direction is provided on the left wall 63 of the cockpit section 5. A rectangular plate material 81 made of steel is provided in the vertical middle of the right part of the cockpit support member 80.

A support shaft (the "second support shaft" in the claims) 82 extending in the left-right direction is provided in the approximate center of the plate material 81, and the left part of the support shaft 82 is fixed to the cockpit support member 80 and the plate material 81, and the swing plate 32 is rotatably supported on the left part of the support shaft 82. This makes it possible to fix the side panel 20 to the left wall 63 of the cockpit 5 via the cockpit support member 80 etc., thereby suppressing vibrations generated in the side panel 20 during travel. It also makes it possible to block vibrations transmitted to the cockpit 10 via the side panel 20.

The cockpit support member 80 has a long hole with a long axis in the up-down direction formed in the upper and lower parts, and is fixed to the left wall 63 of the cockpit 5 by a fastening means 83 such as a bolt inserted into the long hole.

This allows the cockpit support member 80 to be moved up and down to adjust the vertical position of the side panel 20.

To avoid a protrusion formed on the left wall 63, it is preferable that the cockpit support member 80 is shaped so that the middle part in the vertical direction is located to the right of the upper and lower parts when viewed from the rear. In addition, a collar 84 that prevents the swing plate 32 fitted onto the shaft 82 from falling off and a fastening member 85 such as a nut that fixes the collar 84 to the shaft 82 are provided on the right part of the shaft 82.

<Mode select switch>
Instead of the mode select lever 25, a plate-shaped mode select panel ("mode change operation section" in the claims) 90 can be provided on the side panel section 21. The shape of the mode select panel 90 is not limited to a plate shape, and any shape required for operation can be adopted. This makes it possible to further prevent the operator's field of vision from being obstructed, and also makes it possible to easily position the side panel 20 in an open position extending in the vertical direction without having to worry about contact between the cockpit 10 and the mode select lever 25.

As shown in FIG. 28, the left side of the mode select panel 90 is provided with an operation unit 91 for changing the mode, and the right side is provided with a display unit 92 for displaying the traveling speed of the traveling device 2, etc.

The operating unit 91 is composed of a mode switch (the "first switch" in the claims) 91A with "△" printed on its surface for changing the mode, a mode switch (the "second switch" in the claims) 91B with "▽" printed on its surface for changing the mode, and a reaping switch (the "third switch" in the claims) 91C with "reap" printed on its surface for connecting and disconnecting the reaping clutch 18 and threshing clutch 19. The reaping switch 91C is located midway between the mode switches 91A and 91B in the front-to-rear direction.

The display unit 92 is composed of, from the front, a speed display unit 92A with an "H" printed on its surface to indicate that the traveling speed of the traveling device 2 is high, a speed display unit 92B with an "M" printed on its surface to indicate that the traveling speed of the traveling device 2 is medium, a speed display unit 92C with an "L" printed on its surface to indicate that the traveling speed of the traveling device 2 is low, and a harvesting display unit 92D with "harvesting" printed on its surface to indicate the operating status of the harvesting device 3 and the threshing device 4.

The modes include a work mode in which the harvesting device 3 and threshing device 4 are driven to harvest and thresh stalks in the field, and a field movement mode in which the harvesting device 3 and threshing device 4 are stopped and the field is moved between fields. The work modes include a standard work mode (the "first work mode" in the claims) in which the traveling device 2 travels at a high speed, a standard low-speed work mode (the "second work mode" in the claims) in which the traveling device 2 travels at a medium speed, and a lodging work mode (the "third work mode" in the claims) in which the traveling device 2 travels at a low speed.

The travel speed of the traveling device 2 in each mode is fastest in the field movement mode, followed by the standard work mode, the low-speed work mode, and the lodging work mode in that order.

Figure 29 shows the display unit 92 in standard operation mode. In standard operation mode, the traveling speed of the traveling device 2 and the reaping speed of the reaping device 3 are set to high speeds to perform reaping and threshing operations.

The display unit 92 lights up the speed display unit 92A and the harvesting display unit 92D in accordance with the running speed of the traveling device 2 in the standard operation mode and the drive status of the harvesting device 3 and the threshing device 4. This allows the worker to visually check the display unit 92 and confirm the operation mode.

The drive status of the harvesting device 3 and threshing device 4 can be controlled using the harvesting switch 91C.

When the reaping switch 91C is pressed for 3 to 5 seconds, the reaping clutch 18 and threshing clutch 19 are connected, the reaping device 3 and threshing device 4 are driven, and the reaping/threshing display unit 92D lights up. When the reaping switch 91C is pressed, the reaping clutch 18 and threshing clutch 19 are disconnected, the reaping device 3 and threshing device 4 are stopped, and the reaping/threshing display unit 92D flashes. Before the reaping clutch 18 and threshing clutch 19 are connected and the reaping device 3 and threshing device 4 are driven, a warning message such as "The reaping device and threshing device are starting to operate" is displayed on the monitor 15.

When the reaping switch 91C is pressed and held, a message such as "reaping device and threshing device operation has begun" is displayed on the monitor 15. This allows the operator to be alerted. In addition, when the reaping switch 91C is pressed, the controller 52D increases the output rotation of the engine E. This allows the combine to be quickly moved close to the grain transport truck.

Figure 30 shows the display unit 92 in standard low-speed work mode. Pressing mode switch 91B changes the work mode from standard work mode to standard low-speed work mode. Pressing mode switch 91A returns the work mode from standard low-speed work mode to standard work mode.

When the mode switch 91A is pressed during standard low-speed operation mode, the controller 52D drives the operating means (not shown) for the gear transmission mechanism 17A to change the meshing gear of the gear transmission mechanism 17A of the transmission 17, thereby increasing the running speed of the traveling device 2 and the mowing speed of the mowing device 3 to high speeds.

When the mode switch 91B is pressed during standard operation mode, the controller 52D drives the operating means for the gear transmission mechanism 17A, changing the meshing gear of the gear transmission mechanism 17A of the transmission 17, thereby slowing down the travel speed of the traveling device 2 and the mowing speed of the mowing device 3 to medium speed.

The controller 52D can also drive an operating means (not shown) for the hydraulic continuously variable transmission 16 to change the opening of the swash plate of the hydraulic motor of the hydraulic continuously variable transmission 16, thereby increasing or decreasing the traveling speed of the traveling device 2 and the mowing speed of the mowing device 3. The speed change lever 14 increases or decreases the traveling speed of the traveling device 2 and the mowing speed of the mowing device 3 by changing the opening of the swash plate of the hydraulic motor of the hydraulic continuously variable transmission 16.

In the standard low-speed operation mode, the running speed of the traveling device 2 and the reaping speed of the reaping device 3 are set to medium speeds to perform reaping and threshing operations.

The display unit 92 lights up the speed display unit 92B and the harvesting display unit 92D in accordance with the running speed of the traveling device 2 in the standard low-speed operation mode and the drive status of the harvesting device 3 and the threshing device 4. This allows the worker to visually check the display unit 92 and confirm the operation mode.

Figure 31 shows the display unit 92 in the lying-down operation mode. Pressing the mode switch 91B changes the operation mode from the standard low-speed operation mode to the lying-down operation mode. Pressing the mode switch 91A returns the operation mode from the lying-down operation mode to the standard low-speed operation mode.

When the mode switch 91A is pressed during the lying down operation mode, the controller 52D drives the operating means (not shown) for the gear transmission mechanism 17A and changes the meshing gear of the gear transmission mechanism 17A of the transmission 17 to increase the running speed of the traveling device 2 and the mowing speed of the mowing device 3 to medium speed.

When the mode switch 91B is pressed in the standard low-speed operation mode, the controller 52D drives the operating means for the gear transmission mechanism 17A, which changes the meshing gear of the gear transmission mechanism 17A of the transmission 17, slowing down the traveling speed of the traveling device 2 to a low speed. The controller 52D also drives the operating means (not shown) for the gear transmission mechanism 17B, which drives the gear transmission mechanism 17B and increases the reaping speed of the reaping device 3 to a medium or high speed. This allows the raising device of the reaping device 3 to efficiently raise and harvest fallen stalks.

In the lodging operation mode, the traveling device 2 travels at a low speed and the reaping device 3 is operated at a high reaping speed to perform reaping and threshing operations.

The display unit 92 lights up the speed display unit 92C and the reaping/threshing display unit 92D in accordance with the travel speed of the traveling device 2 during the tipping operation mode and the drive status of the reaping device 3 and the threshing device 4. This allows the worker to visually check the display unit 92 and confirm the operation mode.

Figure 32 shows the display unit 92 in field movement mode. When the mode switch 91A is pressed for 3 to 5 seconds in work mode, the mode can be changed from work mode to field movement mode. Also, when the mode switch 91B is pressed for 3 to 5 seconds, the mode can be changed back from field movement mode to work mode.

When the mode switch 91A is pressed for 3 to 5 seconds in the work mode, the controller 52D drives the operating means for the gear transmission mechanism 17A and changes the meshing gear of the gear transmission mechanism 17A of the transmission 17 to increase the running speed of the traveling device 2 to maximum speed, and also releases the connection between the reaping clutch 18 and the threshing clutch 19 to stop the driving of the reaping device 3 and the threshing device 4.

When the mowing switch 91C is pressed and held, a message such as "Change to field movement mode" is displayed on the monitor 15. This allows the operator to be alerted. In addition, when the mowing switch 91C is pressed and held, the controller 52D increases the output rotation of the engine E. This allows the machine to be moved quickly between fields.

When the mode switch 91B is pressed for 3 to 5 seconds in the field movement mode, the controller 52D connects the reaping clutch 18 and the threshing clutch 19 to drive the reaping device 3 and the threshing device 4, and drives the operating means for the gear transmission mechanism 17A to change the meshing gear of the gear transmission mechanism 17A of the transmission 17 to slow down the traveling speed of the traveling device 2 and the reaping speed of the reaping device 3 to the speed of the work mode before the change, that is, high speed if the work mode before the change was the standard work mode, medium speed if the standard low-speed work mode, and low speed if the work mode was the downfall work mode. This allows the mode to be returned to the work mode before the mode change, reducing the discomfort of the operator and allowing the work mode to be resumed efficiently. In addition, when the reaping switch 91C is pressed for a long time, a display such as "Change to work mode, start driving the reaping device and threshing device" is displayed on the monitor 15. This allows the operator to be alerted.

In the field travel mode, the traveling speed of the traveling device 2 becomes maximum, and the operation of the reaping device 3 and the threshing device 4 is stopped.

The speed display section 92A of the display section 92 lights up more brightly in response to the traveling speed of the traveling device 2 in the field movement mode, and the harvesting display section 92D flashes in response to the drive state of the harvesting device 3 and the threshing device 4. This allows the operator to visually check the display section 92 and confirm the field movement mode.

1 Machine frame 2 Traveling device 3 Harvesting device 4 Threshing device 5 Control unit 10 Cockpit 10A Cockpit support member (first cockpit support member)
11 Front panel 16 Hydraulic continuously variable transmission 20 Side panel 21 Side panel portion (first panel portion)
21A hanging portion 22 control panel portion (second panel portion)
24 Shift lever 31 Pivot (first pivot)
63 Left wall 80 Pilot seat support member (second pilot seat support member)
82 Support shaft (second support shaft)
90 Mode select panel 91A Mode switch (first switch)
91B Mode switch (second switch)
91C Mowing switch (third switch)
E-Engine

Claims (4)

A combine harvester comprising: a traveling device (2) disposed under a machine frame (1) on which an engine (E) is mounted; a reaping device (3) for reaping stalks in a field disposed in front of the machine frame (1); a threshing device (4) for threshing the stalks disposed on the rear left side of the reaping device (3); a control section (5) for an operator to ride on disposed on the rear right side of the reaping device (3); and a speed change mechanism for changing the speed of the output rotation of the engine (E) and outputting it toward the traveling device (2),
A front panel (11) is provided in front of a cockpit (10) of the control section (5), and a side panel (20) is provided on the left side of the cockpit (10);
A speed change lever (24) for operating a speed change mechanism for changing the output rotation of the engine (E) and a mode change operation unit (90) for changing a predetermined mode are provided on the side panel (20),
The mode change operation unit (90) is provided with an operation unit (91) for performing a mode change operation and a display unit (92) for displaying the operation result of the operation unit (91),
The operating unit (91) is capable of changing both the gear ratio of the speed change mechanism and the engagement state of the clutches of the reaping device (3) and the front threshing device (4) by a single operation.
combine. the mode change operation unit (90) is provided with a first switch (91A) for increasing the traveling speed of the traveling device (2) and a second switch (91B) for decreasing the traveling speed of the traveling device (2);
When the first switch (91A) is operated for a predetermined time, the mode is changed from a work mode in which the traveling device (2), the reaping device (3), and the threshing device (4) are driven to a field movement mode in which the traveling device (2) is driven and the driving of the reaping device (3) and the threshing device (4) is stopped,
2. The combine harvester according to claim 1, wherein the mode is changed from the field movement mode to the work mode when the second switch (91B) is operated for a predetermined time. The work modes are formed into a first work mode in which the traveling speed of the traveling device (2) is high, a second work mode in which the traveling speed of the traveling device (2) is medium, and a third work mode in which the traveling speed of the traveling device (2) is low,
A combine harvester as described in claim 2, wherein when the second switch (91B) is operated to change the mode from the second operation mode to the third operation mode, the mowing speed of the mowing device (3) is switched from a low speed to a medium speed or a high speed. A third switch (91C) is provided between the first switch (91A) and the second switch (91B),
When the third switch (91C) is operated, the operation of the reaping device (3) and the threshing device (4) is stopped.
The combine harvester according to claim 3, wherein the reaping device (3) and the threshing device (4) are driven when the third switch (91C) is operated for a predetermined time.