combine

Abstract

To provide a combine-harvester in which a rear part of a side panel is rotatably supported, and which allows a user to easily visually confirm a state of grain culm clogging in a conveyance device of a reaping device by changing an attitude from an operation attitude in which the side panel extends in a front-rear direction to an opening attitude in which the side panel extends in an up-down direction.SOLUTION: A combine-harvester comprises: a travel device which is provided on a lower side of a machine body frame; a reaping device which is provided on a front side of the machine body frame and reaps grain culm; a thresher which is provided on a rear left side of the reaping device and threshes the grain culm; a steering unit which is provided on a rear right side of the reaping device; a transmission mechanism which changes the output rotation of an engine to output the output rotation to the travel device; a front panel which is provided on a front side of a steering seat of the steering unit; a side panel which is provided on a left side of the steering seat; a speed change lever and a mode change operation unit 90 which operate the transmission mechanism to change the output rotation of the engine in the side panel. Both of an operation state of any of the reaping device and the thresher and a transmission ratio of the transmission mechanism can be changed with the operation of the mode change operation unit.SELECTED DRAWING: Figure 28

Description

[Technical field]

[0001] The present invention relates to a combine harvester having 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. [Background technology]

[0002] Conventionally, a side panel provided on the left side of the driver's seat is formed of a side panel portion extending horizontally in the front-to-back and left-to-right directions, and a control panel portion formed with an upward slope to the left from the left end of the side panel portion, and a speed change lever for increasing or decreasing the traveling speed of the traveling device and a threshing lever for operating the threshing clutch, etc. are provided on the side panel portion, and a work light switch for turning on the work light and a threshing depth dial for adjusting the threshing depth of the reaping device are provided on the control panel portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-104387 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the solution of Patent Document 1 had the problem that the operation of the threshing clutch, etc. was complicated.

[0005] Therefore, an object of the present invention is to provide a combine harvester that allows easy operation and checking of the combine harvester using the side panels. [Means for solving the problem]

[0006] The present invention which has solved the above problems is as follows.

[0007] That is, the invention described in claim 1 relates to a combine harvester including a traveling device (2) provided under a machine frame (1) on which an engine (E) is mounted, a reaping device (3) for reaping 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 reaping device (3), a control section (5) on which an operator sits provided 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), The combine harvester has a front panel (11) in front of a driver's seat (10) of a harvesting unit (5), and a side panel (20) on the left side of the driver's seat (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) are provided on the side panel (20). By operating the mode change operation unit (90), both the operating state of either the harvesting device (3) or the threshing device (4) and the gear ratio of the speed change mechanism can be changed.

[0008] In the invention described in claim 2, 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), and when the first switch (91A) is operated for a predetermined time, the operation mode changes from an operation mode in which the traveling device (2), the reaping device (3), and the threshing device (4) are driven to an operation mode in which the traveling device (2) is driven and the reaping device (3) and the threshing device (4) are stopped. Field movement mode When the mode is changed to the second switch (91B) and the second switch (91B) is operated for a predetermined time, Field movement mode The combine harvester according to claim 1 is configured so that the mode can be changed from the driving mode to the working mode.

[0009] The invention described in claim 3 is the combine harvester described in claim 2, in which the work modes are formed of 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 mowing speed of the mowing device (3) is switched from low to medium or high.

[0010] 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 harvesting device (3) and the threshing device (4) is stopped, and when the third switch (91C) is operated for a predetermined time, the harvesting device (3) and the threshing device (4) are driven. Effect of the Invention

[0011] According to the invention described in claim 1, by operating the mode change operation unit (90), the operating state of either the harvesting device (3) or the threshing device (4) and the gear ratio of the transmission mechanism can be easily changed collectively.

[0012] According to the invention of claim 2, in addition to the effect of the invention of claim 1, it is possible to change the mode while preventing an erroneous operation by an operator. Also, it is possible to quickly move between fields by increasing the traveling speed of the traveling device (2).

[0013] According to the invention described in claim 3, the lifting device of the reaping device (3) can efficiently lift up and harvest fallen stalks in the field.

[0014] According to the invention as set forth in claim 4, the reaping device (3) and the threshing device (4) can be driven while preventing erroneous operation by an operator. [Brief description of the drawings]

[0015] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is a front perspective view of the cockpit and side panel. [Diagram 5] A front view of the cockpit and side panel. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. 4 is a right side view of the side panel with the cover removed. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. 2 is a rear perspective view of the cockpit, side panel, and lift plate. [Figure 13] FIG. 2 is a rear perspective view of the side panel and lift plate; [Figure 14] FIG. 13 is a right side view of the side panel and the lift plate. [Figure 15] FIG. 2 is a front perspective view of the control section with the side panels in the control position. [Figure 16] This is a right side view of the control section, with the side panel in the control position. [Figure 17] FIG. 2 is a front perspective view of the control section with the side panels in the open position. [Figure 18] This is a right side view of the control section with the side panel in the open position. [Figure 19] FIG. 1 is a left side view of the side panel and lift plate in the piloting position. [Figure 20] FIG. 1 is a rear view of the cockpit and side panels and lift plate in the cockpit position. [Figure 21] FIG. 13 is a left side view of the side panel and the lift plate in the open position. [Figure 22]FIG. 1 is a rear view of the cockpit and side panels and lift plate in the cockpit position. [Diagram 23] 3 is a transmission diagram of the output rotation of the engine. [Figure 24] FIG. 2 is a plan view of the control section with the monitor removed. [Diagram 25] FIG. 13 is a left side view of the side panel supported on the left wall of the control section. [Figure 26] FIG. 13 is a right side view of the side panel supported on the left wall of the control section. [Figure 27] FIG. 2 is a front perspective view of the handle lever and side panel of the control section. [Figure 28] FIG. 4 is a plan view of the mode select switch. [Figure 29] FIG. 13 is an explanatory diagram of the display unit in a standard operation mode. [Diagram 30] FIG. 13 is an explanatory diagram of the display section in a standard low-speed operation mode. [Diagram 31] FIG. 13 is an explanatory diagram of the display section in a lowering operation mode. [Diagram 32] FIG. 13 is an explanatory diagram of the display unit in a farm field movement mode. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] As shown in Figures 1 and 2, a combine harvester has a traveling device 2 consisting of a pair of left and right crawlers that travels on the soil surface on the underside of a body frame 1, a harvesting device 3 that harvests grain stalks in the field is provided on the front side of the body frame 1, a threshing device 4 that threshes and sorts the harvested grain stalks is provided on the rear left side of the harvesting device 3, and a control unit 5 on which an operator rides is provided on the rear right side of the harvesting device 3.

[0017] An engine room 6 in which an engine E is mounted is provided below the control unit 5, and a grain tank 7 for storing threshed and sorted grains is provided behind the control unit 5. Behind the grain tank 7 is a discharge auger 8 consisting of a vertically extending grain lifting section and a horizontal discharge section extending in the front-to-back direction for discharging grains to the outside.

[0018] 3 to 5, a front panel 11 is provided in front of the operator's seat 10 of the operating unit 5. A rod 12 extending in the left-right direction that an operator grasps to maintain an operating position is provided on the upper side of the front panel 11, and an operation lever 13 for raising and lowering the reaping device 3 is provided on the right side of the front panel 11.

[0019] 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 of a side panel portion (a "first panel portion" in the claims) 21 extending in the front-rear direction and a control panel portion 22 provided on the left side of the side panel portion 21, and the lower portion of the side panel portion 21 is covered with a cover 23. Also, 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 portion 21. Note that, although the side panel portion 21 and the control panel portion 22 are formed integrally in this embodiment, they may also be formed separately.

[0020] A shift lever 24 is provided at the front of the side panel portion 21 to operate 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 shift lever 24 is provided a mode select lever 25 to operate the transmission 17, which increases / decreases the output rotation of the hydraulic continuously variable transmission 16, and the reaping clutch 18 and threshing clutch 19 provided in the transmission path of the output rotation of the engine E.

[0021] 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 from the neutral position to the forward tilt position, the rotation direction of the output rotation of the hydraulic continuously variable transmission 16 becomes forward rotation, which is the same as the rotation direction of the output rotation of the engine E. When the tilt angle of the forward tilt position is increased, the output rotation of the hydraulic continuously variable transmission 16 becomes faster, and when the tilt angle of the front tilt position is decreased, the output rotation of the hydraulic continuously variable transmission 16 becomes slower. When the shift lever 24 is tilted from the neutral position to the rear tilt position, the rotation direction of the output rotation of the hydraulic continuously variable transmission 16 becomes reverse rotation, which is the opposite of the rotation direction of the output rotation of the engine E. When the tilt angle of the rear tilt position is increased, the output rotation of the hydraulic continuously variable transmission 16 becomes faster, and when the tilt angle of the rear tilt position is decreased, the output rotation of the hydraulic continuously variable transmission 16 becomes slower.

[0022] When the mode select lever 25 is in the forward tilt position, the reaping clutch 18 and the threshing clutch 19 are disengaged and the drive of the reaping device 3 and the threshing device 4 is stopped. When the mode select lever 25 is in the neutral position, the reaping clutch 18 is engaged and the reaping device 3 is driven, and the threshing clutch 19 remains disengaged and the drive of the threshing device 4 remains stopped.

[0023] 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.

[0024] In addition, 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, and when the mode select lever 25 is in the forward tilt position, the output rotation is decelerated and transmitted to the traveling device 2, and when the mode select lever 25 is in the rearward tilt position, the output rotation is accelerated and transmitted to the traveling device 2.

[0025] 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 surface of the left wall 61 of the cabin 60. This allows a plurality of electrical equipment 52 to be collected and installed in one place, facilitating wiring work and easy replacement of the electrical equipment 52.

[0026] 6, switch area 26 facing shift lever 24 on control panel section 22 is provided with switch 26A for switching the mowing height of mowing device 3, and dial area 27 facing mode select lever 25 on control panel section 22 is provided with dial 27A for raising and lowering the temperature inside cabin 60. This allows the operator to easily operate switch 26A and dial 27A without bending over and taking his or her hands off shift lever 24 and mode select lever 25, thereby improving driving safety and operability.

[0027] 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 makes it possible to prevent the mode select lever 25 from blocking the operator's field of vision.

[0028] The length of the switch area 26 in the front-rear direction is longer than the length of the dial area 27 in the front-rear direction, and the length of the switch area 26 in the up-down direction is longer than the length of the dial area 27 in the up-down direction. This allows a switch 26A having a large operating portion to be provided in the switch area 26, thereby improving operability. In addition, the switch area 26 can cover the upper side of the protective cover 50, so that dust and the like can be prevented from accumulating on the protective cover 50.

[0029] 8, a base portion of a gear shift lever 24 is pivotally fixed to the front portion of a hanging portion 21A extending downward from the left end portion of side panel portion 21, and the pivot angle of gear shift lever 24 is measured by an angle sensor 24A such as a potentiometer. In addition, a base portion of a mode select lever 25 is pivotally fixed to the rear portion of hanging portion 21A, and the pivot angle of mode select lever 25 is measured by an angle sensor 25A such as a potentiometer.

[0030] 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 rearward downward inclination, and the dial 27A provided in the front part of the dial area 27 is provided at a position overlapping the grip of the mode select lever 25 in the forward tilted posture. This allows the operator to more easily operate the dial 27A without bending forward and releasing the hand from the mode select lever 25. In this embodiment, the dial 27A provided in the middle part of the dial area 27 is provided at a position overlapping the grip of the mode select lever 25 in the neutral posture, and the dial 27A provided in the rear part of the dial area 27 is provided at a position overlapping the grip of the mode select lever 25 in the rearward tilted posture.

[0031] The front portion of the side panel portion 21, i.e., the portion in which the groove through which the gear shift lever 24 is inserted is formed, is formed substantially horizontal. The rear portion of the side panel portion 21, i.e., the portion in which the groove through which the mode select lever 25 is inserted is formed, is formed with a gentle downward rearward incline. This allows the gripping portion of the mode select lever 25 in the neutral position or in the rearward inclined position to be positioned a predetermined distance above the upper surface of the rear portion of the side panel portion 21.

[0032] 9, an upper portion of hanging portion 21A of side panel portion 21 is fixed to front-rear frame 30 made of square pipes extending in the front-rear direction. In addition, a rear portion of front-rear frame 30 is fixed to an upper portion of the right surface of swing plate 32 rotatably fixed to support shaft 31 ("first support shaft" in the claims). In this way, side panel 20 can be swung about support shaft 31 to move side panel 20 between an operating posture in which the longitudinal direction of side panel 20 is aligned with the front-rear direction and an open posture in which the longitudinal direction of side panel 20 is aligned with the up-down direction.

[0033] The swing plate 32 is formed of a plate portion 32A extending in the front-rear and up-down directions and rotatably fixed to the support shaft 31, and a rib portion 32B erected in the middle in 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 makes it possible to suppress deformation of the swing plate 32 and to swing the side panel 20 smoothly.

[0034] Connecting members 33 are provided on the underside of the front-rear frame 30, extending downward at a predetermined interval in the front-rear direction, and a front-rear pipe 34 made of a round pipe extending in the front-rear direction is provided below the connecting members 33. The rear portion of the front-rear pipe 34 is curved to the right and then fixed to the front lower portion of the right surface of the swing plate 32. 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.

[0035] The underside of the monitor 15 is fixed to the front part of a freely bendable support pipe 36 via a pin 35 extending in the left-right direction. The rear part of the support pipe 36 is fixed to the front part of the front-rear pipe 34. This allows the monitor 15 to be moved in conjunction with the side panel 20 about the support shaft 31 between an operating position where the monitor 15 is located in front of the side panel 20 and an open position where the monitor 15 is located above the side panel 20.

[0036] 10 and 11, hanging portion 21A of side panel portion 21 is provided in a right-side inclined position with its upper portion positioned further to the right than its lower portion. This allows side panel portion 21 to be formed with a gentle downward rightward incline, and gear shift lever 24 and mode select lever 25 can be provided in a right-side inclined position with its upper portion positioned further to the right than its lower portion, allowing the operator to easily operate gear shift lever 24 and mode select lever 25 without having to bend forward.

[0037] The crossing angle between the side panel portion 21 and the control panel portion 22 is formed at approximately 115 degrees. This allows the operator to easily see the switches 26A provided in the switch area 26 of the control panel portion 22 and the dials 27A provided in the dial area 27, and prevents erroneous operation of the switches 26A, etc.

[0038] The upper end of the control panel section 22 is formed at approximately the same height as the upper end of the gear shift lever 24 in the neutral position. Also, the upper end of the monitor 15 is formed at approximately the same height as the upper end of the gear 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.

[0039] 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 portions of a pair of left and right support members 40A extending in the fore-aft direction of a movable frame 40 that is movable in the fore-aft direction, and a support member 40C erected at the rear portions of the pair of left and right support members 40A.

[0040] The movable frame 40 is slidably mounted on the upper surfaces of a pair of left and right fixed frames 41 made of angle members extending in the front-rear direction below the movable frame 40 .

[0041] The pair of left and right fixed frames 41 are fixed to a rectangular lift plate 42, and the lift plate 42 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 to a position that suits his or her body shape by moving the pilot's seat 10 in the front-rear and up-down directions.

[0042] 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 provided on a lift plate 42 that moves up and down in the vertical direction. The connecting member 45 is formed of a left-right extending portion 45A extending in the left-right direction between the pair of left and right fixed frames 41, and a top-bottom extending portion 45B extending leftward from the left fixed frame 41 and then bending approximately 90 degrees upward.

[0043] A support shaft 31 extending in the left-right direction is provided on the upper part of the vertical extension part 45B. A collar 46 for preventing the swing plate 32 fitted on the support shaft 31 from falling off and a fastening member 47 such as a nut for fixing the collar 46 to the support shaft 31 are provided on the left part of the support shaft 31. In addition, a restricting plate 48 for restricting the swing angle of the side panel 20 is provided on 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 each other, so that the operator can easily move the cockpit 10 to a position that suits his or her body shape.

[0044] In this embodiment, the moving frame 40, the fixed frame 41, and the lift plate 42 are collectively referred to as a cockpit support member ("first cockpit support member" in the claims) 10A. Also, in this embodiment, the connecting member 45 on which the support shaft 31 is mounted 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 an interlocking manner in the up-down direction and the front-rear direction.

[0045] 14, a circumferential groove 48A having a predetermined length is formed in a portion of the regulating plate 48 spaced a predetermined radius from the support shaft 31, and a right portion of a 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 to 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 smaller 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.

[0046] 15 and 16, when the side panel 20 is positioned in an operating position extending in the front-rear direction, the electrical equipment 52 provided on the right surface of the left wall 61 of the cabin 60 is covered by the side panel 20. This makes it possible to prevent an operator from accidentally touching the electrical equipment 52, and also makes it possible to prevent disconnection of the harness connected to the electrical equipment 52, etc.

[0047] As shown in Figures 17 and 18, when the side panel 20 is in the open position extending in the vertical direction, a large space is formed on the left side 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 stalks stuck in the harvesting device 3. In addition, the electrical equipment 52 provided on the right side of the left wall 61 of the cabin 60 is exposed. This allows the operator to easily perform maintenance and replacement work on the electrical equipment 52 by removing the protective cover 50.

[0048] The electrical equipment 52 is provided on a power distribution plate 51 attached to the left wall 61 of the cabin 60. On the upper part of the power distribution plate 51, a fuse 52A, a small relay 52B, and a large relay 52C are provided in this order from the front side, 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 relays 52B and the like extending in the front-rear direction is arranged between the fuses 52A and the like and the controller 52D in the vertical direction. This makes it easy to arrange the power supply line 53 and the like, and to easily replace the fuses 52A and the like that have become malfunctioning.

[0049] 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, the monitor 15, and the controller 52D is inserted into the hollow portion 31A. This allows the side panel 20 to move smoothly from the operating position to the open position, etc., and also prevents the harness 37 from breaking.

[0050] The vertical extension portion 45B of the connecting member 45 is formed to extend leftward from the left fixed frame 41 and then extend 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 located in a position facing the elbow of the operator, allowing the operator to easily operate the gear shift lever 24 and the mode select lever 25.

[0051] Furthermore, when the side panel 20 is positioned in an operating position extending in the front-rear direction, the right part of the side panel portion 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 a rear view. This makes it possible to reduce the length of the control unit 5 in the left-right direction.

[0052] 21 and 22, the vertical extension portion 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 the right portion of the side panel portion 21 and the left portion of the cockpit seat 10 coming into contact with each other.

[0053] In addition, when the side panel 20 is positioned in an open position extending in the vertical direction, 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.

[0054] <Transmission of engine output rotation> As shown in Fig. 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 power. 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 an output shaft.

[0055] The output rotation of the output shaft of the hydrostatic 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.

[0056] The output rotation of the first output shaft, which has been accelerated or decelerated by a gear transmission mechanism 17A in the transmission 17, is transmitted to the traveling device 2 to rotate the crawler of the traveling device 2.

[0057] The output rotation of the second output shaft, which is accelerated or decelerated by a gear transmission mechanism 17A in the transmission 17 and a gear transmission mechanism 17B provided downstream of the gear transmission mechanism 17A, 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.

[0058] This allows the travel speed of the traveling device 2 and the mowing speed of the mowing device 3 to be increased or decreased simultaneously by operating the speed change lever 24, so that the travel speed of the traveling device 2 and the mowing speed of the mowing device 3 can be increased or decreased by operating the speed change lever 24 according to the lying state of the stalks in the field, thereby enabling the stalks to be mowed efficiently.

[0059] In addition, the output rotation of the engine E is transmitted to the threshing device 4 via a threshing clutch 19 provided on the second path B.

[0060] 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 disabling it from running. Also, when 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 start of the traveling device 2 when the side panel 20 is in the open position and maintenance or replacement work of the electrical equipment 52 is being performed, and the maintenance or replacement work of the electrical equipment 52 can be performed safely.

[0061] Moreover, when the output signal of the sensor 49 is turned OFF, it is preferable to stop driving the hydraulic continuously variable transmission 16 and regulate the increase / decrease in the output rotation of the engine E. This allows the maintenance and replacement work of the electrical equipment 52 to be performed more safely.

[0062] <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 a left portion of the handle bar 70 fixed to a left wall 63 of the control unit 5 and a right portion of the handle bar 70 fixed to a right wall 64 of the control unit 5. This allows an operator to easily operate the operating lever 13 while holding the left portion of the handle bar 70 and maintaining a leaning forward position. Note that in this specification, the left wall 61 of the cabin 60 and the left wall 63 of the control unit 5 indicate the same member.

[0063] 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 substantially 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 with the support shaft 31 as its center.

[0064] A pin 75 extending leftward from the support pipe 36 is provided at the front of the support pipe 36 of the side panel 20. When the side panel 20 is moved to the operation 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 outward from the guide groove 72.

[0065] As a result, the front portion of the side panel 20 is supported by the guide groove 72, making it possible to suppress vibrations occurring in the side panel 20 during travel. Furthermore, the vertical length of the guide groove 72 is formed so that when the pin 75 abuts against the lower portion of the guide groove 72, the front and rear frames 30 of the side panel 20 become approximately horizontal in a side view.

[0066] The length of the guide groove 72 in the vertical direction is formed so that when the pin 75 abuts against the lower part of the guide groove 72 in a side view, the front and rear frames 30 of the side panel 20 are approximately horizontal. In addition, a thin-diameter portion having a smaller diameter 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 is inserted into the guide groove 72 and the pin 75 is more firmly engaged at the lower part of the guide groove 72, so that the vibration generated in the side panel 20 during travel can be further suppressed. In addition, the pin 75 can be inserted into the guide groove 72 and engaged with the guide groove 72 at a part other than the lower part of the guide groove 72 to easily adjust the inclination angle of the side panel 20 to be optimal for the operator.

[0067] 26 and 27, a cockpit support member (referred to as "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 a steel plate is provided in the vertical middle of the right part of the cockpit support member 80.

[0068] A support shaft (a "second support shaft" in the claims) 82 extending in the left-right direction is provided in approximately the 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. In this way, the side panel 20 can be fixed to the left wall 63 of the cockpit 5 via the cockpit support member 80 etc., and vibrations generated in the side panel 20 during travel can be suppressed. Also, vibrations transmitted to the cockpit 10 via the side panel 20 can be blocked.

[0069] The cockpit support member 80 is fixed to the left wall 63 of the cockpit 5 by fastening means 83 such as a bolt inserted into the long hole.

[0070] This allows the cockpit support member 80 to be moved up and down to adjust the vertical position of the side panel 20.

[0071] In order 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 behind. 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.

[0072] <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.

[0073] As shown in FIG. 28, an operation unit 91 for changing the mode is provided on the left side of the mode select panel 90, and a display unit 92 for displaying the traveling speed of the traveling device 2 and the like is provided on the right side.

[0074] The operation unit 91 is made up 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 the threshing clutch 19. The reaping switch 91C is provided midway between the mode switches 91A and 91B in the front-to-rear direction.

[0075] The display unit 92 is composed of, from the front to the rear, a speed display unit 92A with an "H" printed on its surface to indicate that the running speed of the running device 2 is high; a speed display unit 92B with an "M" printed on its surface to indicate that the running speed of the running device 2 is medium; a speed display unit 92C with an "L" printed on its surface to indicate that the running speed of the running 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.

[0076] The modes include a work mode in which the reaping device 3 and the threshing device 4 are driven to harvest and thresh culms in the field, and a field movement mode in which the driving of the reaping device 3 and the threshing device 4 is stopped and the field is moved between fields. The work modes include a standard work mode in which the traveling speed of the traveling device 2 is set to high speed (the "first work mode" in the claims), a standard low speed work mode in which the traveling speed of the traveling device 2 is set to medium speed (the "second work mode" in the claims), and a lodging work mode in which the traveling speed of the traveling device 2 is set to low speed (the "third work mode" in the claims).

[0077] The travel speed of the traveling device 2 in each mode is the fastest in the field movement mode, followed by the standard work mode, the low-speed work mode, and the lowering work mode in that order.

[0078] 29 shows the display unit 92 in the standard work mode. In the standard work 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.

[0079] In the display unit 92, the speed display unit 92A and the reaping / threshing display unit 92D light up in accordance with the traveling speed of the traveling device 2 in the standard operation mode and the drive states 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.

[0080] The drive states of the reaping device 3 and the threshing device 4 can be controlled by a reaping switch 91C.

[0081] When the reaping switch 91C is pressed for 3 to 5 seconds, the reaping clutch 18 and the threshing clutch 19 are connected, the reaping device 3 and the 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 the threshing clutch 19 are disconnected, the reaping device 3 and the threshing device 4 are stopped, and the reaping / threshing display unit 92D starts flashing. Before the reaping clutch 18 and the threshing clutch 19 are connected and the reaping device 3 and the threshing device 4 are driven, a warning message such as "The reaping device and threshing device have started operating" is displayed on the monitor 15.

[0082] When the reaping switch 91C is pressed and held, a message such as "reaping device and threshing device are starting to operate" is displayed on the monitor 15. This alerts the operator. 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 to the vicinity of the grain transport truck.

[0083] 30 shows the display unit 92 in the standard low-speed work mode. When the mode switch 91B is pressed, the work mode can be changed from the standard low-speed work mode to the standard low-speed work mode. When the mode switch 91A is pressed, the work mode can be returned from the standard low-speed work mode to the standard work mode.

[0084] When the mode switch 91A is pressed during standard low-speed operation mode, the controller 52D drives an 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 traveling speed of the traveling device 2 and the mowing speed of the mowing device 3 to high speeds.

[0085] When the mode switch 91B is pressed during standard operation mode, the controller 52D drives the operating means for the gear transmission mechanism 17A, and the meshing gears of the gear transmission mechanism 17A of the transmission 17 are changed to reduce the traveling speed of the traveling device 2 and the mowing speed of the mowing device 3 to medium speeds.

[0086] The controller 52D can also drive an operating means (not shown) for the hydraulic continuously variable transmission 16 to change the opening degree 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 degree of the swash plate of the hydraulic motor of the hydraulic continuously variable transmission 16.

[0087] In the standard low-speed operation mode, the traveling 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.

[0088] In the display unit 92, the speed display unit 92B and the reaping / threshing display unit 92D light up in accordance with the traveling speed of the traveling device 2 in the standard low-speed operation mode and the drive states 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.

[0089] 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.

[0090] When the mode switch 91A is pressed during the lying-down operation mode, the controller 52D drives an 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 traveling speed of the traveling device 2 and the mowing speed of the mowing device 3 to medium speed.

[0091] 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 gears of the gear transmission mechanism 17A of the transmission 17, thereby 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, thereby increasing 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.

[0092] In the lodging operation mode, the traveling device 2 travels at a low speed and the reaping device 3 is set to a high reaping speed to perform reaping and threshing operations.

[0093] In the display unit 92, the speed display unit 92C and the reaping / threshing display unit 92D light up in accordance with the traveling speed of the traveling device 2 in the lodging operation mode and the drive states 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.

[0094] Fig. 32 shows the display unit 92 in the field movement mode. When the mode switch 91A is pressed for 3 to 5 seconds in the work mode, the mode can be changed from the work mode to the field movement mode. Also, when the mode switch 91B is pressed for 3 to 5 seconds, the mode can be returned from the field movement mode to the work mode.

[0095] When the mode switch 91A is pressed and held 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 the maximum speed, and also disengages the harvesting clutch 18 and the threshing clutch 19 to stop the drive of the harvesting device 3 and the threshing device 4.

[0096] When the reaping switch 91C is pressed and held, a message such as "Change to field movement mode" is displayed on the monitor 15. This makes it possible to alert the operator. Furthermore, when the reaping switch 91C is pressed and held, the controller 52D increases the output rotation of the engine E. This makes it possible to quickly move between fields.

[0097] 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 reduce 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 before the change was the downfall work mode. This makes it possible to return to the work mode before the mode change, reducing the discomfort of the operator and efficiently resuming the work mode. Also, when the reaping switch 91C is pressed for a long time, a display such as "Changed to work mode, start driving the reaping device and the threshing device" is displayed on the monitor 15. This makes it possible to alert the operator.

[0098] In the field movement mode, the traveling speed of the traveling device 2 becomes maximum, and the drive of the reaping device 3 and the threshing device 4 is stopped.

[0099] In the display unit 92, the speed display unit 92A lights up more brightly in accordance with the traveling speed of the traveling device 2 in the field movement mode, and the harvesting / threshing display unit 92D flashes in accordance with the drive states of the harvesting device 3 and the threshing device 4. This allows the operator to visually check the display unit 92 and confirm the field movement mode. [Explanation of symbols]

[0100] 1 Aircraft frame 2 Running gear 3 Reaping device 4. Threshing equipment 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 section (first panel section) 21A Drooping part 22 Control panel section (second panel section) 24 Gear shift lever 31 Support shaft (1st support shaft) 63 Left Wall 80 cockpit support member (second cockpit 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

1. 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) are provided on the side panel (20); By operating the mode change operation unit (90), it is possible to change both the operating state of either the reaping device (3) or the threshing device (4) and the gear ratio of the speed change mechanism. combine.

2. 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.

3. 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.

4. 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.

Images