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 the rear right side of the reaping device; a transmission mechanism which changes 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 which operates the transmission mechanism to change the output rotation of the engine in the side panel; and a mode change operation unit 90 which performs a prescribed mode change. The mode change operation unit separately includes an operation part 91 which performs mode change operation and a display part which displays an operation result of the operation part.SELECTED DRAWING: Figure 28

Description

Technical Field

[0001] The present invention relates to a combine harvester provided with a front panel having an operation lever for raising and lowering a cutting device in front of the driver's seat, and a side panel having a mode selection switch for changing the operation mode or the like according to the standing state of the straw on the left side.

Background Art

[0002] Conventionally, a side panel provided on the left side of the driver's seat is formed by a side panel portion extending horizontally in the front-rear direction and the left-right direction, and a control panel portion formed to slope upward to the left from the left end portion of the side panel portion. A shift lever for increasing or decreasing the traveling speed of the traveling device and a threshing lever for operating a threshing clutch or the like are provided on the side panel portion, and a work lamp switch for turning on a work lamp and a handling depth dial for adjusting the handling depth of the cutting device are provided on the control panel portion. Such means are known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the means of Patent Document 1 has a problem that the operation of the threshing clutch or the like is complicated.

[0005] Therefore, an object of the present invention is to provide a combine harvester that can easily perform the operation and confirmation of the combine harvester on the side panel.

Means for Solving the Problems

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

[0007] That is, the invention according to claim 1 provides a traveling device (2) below the airframe frame (1) equipped with an engine (E), a harvesting device (3) for harvesting cereal straw in a field in front of the airframe frame (1), a threshing device (4) for threshing cereal straw on the left rear side of the harvesting device (3), a control unit (5) for an operator to board on the right rear side of the harvesting device (3), and a transmission mechanism for changing the output rotation of the engine (E) and outputting it to the traveling device (2). In the combine, a front panel (11) is provided in front of the driver's seat (10) of the control unit (5), a side panel (20) is provided on the left side of the driver's seat (10), and on the side panel (20), there is provided a shift lever (24) for operating a transmission mechanism for changing 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 includes 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 operation unit (91) can change both the gear ratio of the transmission mechanism and the and a combine that can change both the connection states of the clutches of the threshing device (4).

[0008] According to the invention of 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). When the first switch (91A) is operated for a predetermined time, the mode changes from a working mode in which the traveling device (2), the harvesting device (3), and the threshing device (4) are driven to a mode in which the traveling device (2) is driven and the driving of the harvesting device (3) and the threshing device (4) stops Field movement mode and when the second switch (91B) is operated for a predetermined time, the mode changes from the Field movement mode to the working mode. This is the combine according to claim 1 configured as such.

[0009] The invention according to claim 3 forms the working mode with a first working mode in which the traveling speed of the traveling device (2) is high speed, a second working mode in which the traveling speed of the traveling device (2) is medium speed, and a third working mode in which the traveling speed of the traveling device (2) is low speed. When the second switch (91B) is operated and the mode is changed from the second working mode to the third working mode, the cutting speed of the cutting device (3) is switched from low speed to medium speed or high speed. The combine according to claim 2 having such a configuration.

[0010] The invention according to claim 4 provides a third switch (91C) between the first switch (91A) and the second switch (91B). When the third switch (91C) is operated, the driving of the cutting device (3) and the threshing device (4) stops. When the third switch (91C) is operated for a predetermined time, the combine according to claim 3 having a configuration in which the cutting device (3) and the threshing device (4) are driven.

Advantages of the Invention

[0011] According to the invention described in claim 1, the operation result of the operation unit (91) can be easily confirmed.

[0012] According to the invention described in claim 2, in addition to the effect according to the invention described in claim 1, it is possible to prevent incorrect operation by the operator and change the mode. Also, the traveling speed of the traveling device (2) can be increased to quickly move between fields.

[0013] According to the invention described in claim 3, it is possible to efficiently raise and cut the cereal straws lying down in the field with the raising device of the cutting device (3).

[0014] According to the invention described in claim 4, it is possible to prevent incorrect operation by the operator and drive the cutting device (3) and the threshing device (4).

Brief Description of the Drawings

[0015]

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Embodiments for Carrying Out the Invention

[0016] As shown in FIGS. 1 and 2, the combine harvester is provided with a traveling device 2 composed of a pair of left and right crawlers that travel on the soil surface below the body frame 1, a harvesting device 3 for harvesting cereal straws in the field in front of the body frame 1, a threshing device 4 for threshing and sorting the harvested cereal straws on the rear left side of the harvesting device 3, and a control section 5 on which an operator boards on the rear right side of the harvesting device 3.

[0017] An engine room 6 for mounting the engine E is provided below the control section 5, a grain tank 7 for storing the threshed and sorted grains is provided on the rear side of the control section 5, and a discharge auger 8 composed of a grain elevating section extending vertically upward for discharging the grains to the outside and a horizontal discharge section extending in the front-rear direction is provided on the rear side of the grain tank 7.

[0018] As shown in FIGS. 3 to 5, a front panel 11 is provided on the front side of the driver's seat 10 of the control unit 5. On the upper side of the front panel 11, a rod 12 extending in the left-right direction is provided for the operator to hold to maintain the driving posture. On the right part of the front panel 11, an operation lever 13 for raising and lowering the cutting device 3 is provided.

[0019] A side panel 20 is provided on the left side of the driver's seat 10 of the control unit 5. The side panel 20 is formed by a side panel part (the "first panel part" in the claims) 21 extending in the front-rear direction and a control panel part 22 provided on the left side of the side panel part 21. The lower part of the side panel part 21 is covered by a cover 23. Further, a monitor 15 for displaying the rotational speed and the like of the output rotation of the engine E is provided on the front side of the side panel part 21. In the present embodiment, the side panel part 21 and the control panel part 22 are integrally formed, but they can also be formed separately.

[0020] A shift lever 24 for operating a hydraulic continuously variable transmission 16 for increasing or decreasing the rotational speed and switching the rotational direction of the output rotation of the engine E is provided at the front part of the side panel part 21. At the rear side of the shift lever 24, a transmission 17 for increasing or decreasing the rotational speed of the output rotation of the hydraulic continuously variable transmission 16 and a mode select lever 25 for operating a cutting clutch 18 and a threshing clutch 19 provided in the power transmission path of the output rotation of the engine E are provided.

[0021] When the shift lever 24 is in the neutral position, the output rotation of the hydrostatic 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 hydrostatic continuously variable transmission 16 becomes the same positive rotation 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 hydrostatic continuously variable transmission 16 becomes high speed, and when the tilt angle of the forward tilt position is decreased, the output rotation of the hydrostatic 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 hydrostatic continuously variable transmission 16 becomes the reverse rotation opposite to 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 hydrostatic continuously variable transmission 16 becomes high speed, and when the tilt angle of the rear tilt position is decreased, the output rotation of the hydrostatic continuously variable transmission 16 becomes low speed.

[0022] When the mode select lever 25 is in the forward tilt position, the connection of the cutting clutch 18 and the threshing clutch 19 is released, and the driving of the cutting device 3 and the threshing device 4 stops. When the mode select lever 25 is in the neutral position, the cutting clutch 18 is connected and the cutting device 3 is driven, and the connection of the threshing clutch 19 remains released and the driving of the threshing device 4 remains stopped.

[0023] When the mode select lever 25 is in the rear tilt position, the threshing clutch 19 is connected and the threshing device 4 is driven, and the connection of the cutting clutch 18 remains connected and the cutting device 3 remains driven.

[0024] Also, when the mode select lever 25 is in the neutral position, the output rotation of the hydrostatic continuously variable transmission 16 transmitted to the transmission 17 is transmitted to the traveling device 2 without being increased or decreased in speed. When in the forward tilt position, it is decelerated and transmitted to the traveling device 2. When in the rear tilt position, it is accelerated and transmitted to the traveling device 2.

[0025] Below the lower left side of the control panel section (the "second panel section" in the claims) 22, a protective cover 50 is provided to protect the electrical components 52 provided on the right side surface of the left wall 61 of the cabin 60. As a result, a plurality of electrical components 52 can be collectively provided in one place, so that the wiring work can be easily performed and the replacement of the electrical components 52 can also be easily carried out.

[0026] As shown in FIG. 6, in the switch area 26 facing the shift lever 24 in the control panel section 22, a switch 26A for switching the cutting height of the cutting device 3 is provided, and in the dial area 27 facing the mode select lever 25 in the control panel section 22, a dial 27A for raising and lowering the temperature inside the cabin 60 is provided. Thereby, the operator can easily operate the switch 26A and the dial 27A without removing their hands from the shift lever 24 and the mode select lever 25 in a forward-bent posture, so that the operating safety and operability can be improved.

[0027] As shown in FIG. 7, the length of the portion of the mode select lever 25 extending upward from the side panel section 21 is formed shorter than the length of the portion of the shift lever 24 extending upward from the side panel section 21. Thereby, it is possible to suppress the field of view of the operator from being blocked by the mode select lever 25.

[0028] The length of the switch area 26 in the front-rear direction is formed longer than the length of the dial area 27 in the front-rear direction, and the length of the switch area 26 in the vertical direction is formed longer than the length of the dial area 27 in the vertical direction. Thereby, a switch 26A having a large operation portion can be provided in the switch area 26, and the operability can be further improved. In addition, since the upper side of the protective cover 50 can be covered in the switch area 26, it is possible to prevent dust and the like from accumulating on the protective cover 50.

[0029] As shown in FIG. 8, at the front portion of the vertical portion 21A that extends downward from the left end portion of the side panel portion 21, the base portion of the shift lever 24 is swingably fixed, and the swing angle of the shift lever 24 is measured by an angle sensor 24A such as a potentiometer. Further, at the rear portion of the vertical portion 21A, the base portion of the mode select lever 25 is swingably fixed, and the swing angle of the mode select lever 25 is measured by an angle sensor 25A such as a potentiometer.

[0030] In a side view, a plurality of dials 27A provided in the dial region 27 are provided at predetermined intervals on a virtual line L with a rearward downward slope, and the dial 27A provided at the front portion of the dial region 27 is provided at a position overlapping the gripping portion of the mode select lever 25 in the forward tilted posture. Thereby, the operator can more easily operate the dial 27A by releasing the hand from the mode select lever 25 without assuming a forward bending posture. In the present embodiment, the dial 27A provided at the middle portion of the dial region 27 is provided at a position overlapping the gripping portion of the mode select lever 25 in the neutral posture, and the dial 27A provided at the rear portion of the dial region 27 is provided at a position overlapping the gripping portion of the mode select lever 25 in the rearward tilted posture.

[0031] The front side portion of the side panel portion 21, that is, the portion where the groove through which the shift lever 24 is inserted is formed, is formed substantially horizontally. Further, the rear side portion of the side panel portion 21, that is, the portion where the groove through which the mode select lever 25 is inserted is formed, is formed with a gently rearward downward slope. Thereby, the gripping portion of the mode select lever 25 in the neutral posture or the rearward tilted posture can be positioned a predetermined length above the upper surface of the rear side portion of the side panel portion 21.

[0032] As shown in Fig. 9, the upper part of the vertical portion 21A of the side panel portion 21 is fixed to a front-rear frame 30 composed of angle pipes extending in the front-rear direction. Further, the rear part of the front-rear frame 30 is fixed to the upper part of the right surface of a swing plate 32 rotatably fixed to a support shaft (the "first support shaft" in the claims) 31. Thereby, the side panel 20 can be swung about the support shaft 31 to move between an operation posture in which the longitudinal direction of the side panel 20 is along the front-rear direction and an open posture in which the longitudinal direction of the side panel 20 is along the vertical direction.

[0033] The swing plate 32 is formed by a plate portion 32A extending in the front-rear and vertical directions rotatably fixed to the support shaft 31 and a rib portion 32B erected at the middle portion in the front-rear direction on the left surface of the plate portion 32A. The rear part of the front-rear frame 30 is fixed to the left end portion of the rib portion 32B. Thereby, deformation of the swing plate 32 can be suppressed, and the side panel 20 can be smoothly swung.

[0034] On the lower surface of the front-rear frame 30, a connecting member 33 extending downward at a predetermined interval in the front-rear direction is provided, and at the lower part of the connecting member 33, a front-rear pipe 34 composed of a round pipe extending in the front-rear direction is provided. Further, the rear part of the front-rear pipe 34 is fixed to the lower front side of the right surface of the swing plate 32 after curving to the right. In the present embodiment, the connecting member 33 is provided horizontally in the front-rear direction, but it can also be provided with a rearward downward inclination.

[0035] The lower surface of the monitor 15 is fixed to the front part of a support pipe 36 that can be curved via a pin 35 extending in the left-right direction. Further, the rear part of the support pipe 36 is fixed to the front part of the front-rear pipe 34. Thereby, the monitor 15 can be interlocked with the side panel 20 about the support shaft 31 to move between an operation posture in which the monitor 15 is located on the front side of the side panel 20 and an open posture in which the monitor 15 is located on the upper side of the side panel 20.

[0036] As shown in FIGS. 10 and 11, the vertical part 21A of the side panel part 21 is provided in a rightward inclined posture where the upper part is located on the right side of the lower part. Thereby, the side panel part 21 is formed in a gently downwardly inclined shape to the right, and the shift lever 24 and the mode select lever 25 can be provided in a rightward inclined posture where the upper part is located on the right side of the lower part. Therefore, the operator can easily operate the shift lever 24 and the mode select lever 25 without assuming a forward-bending posture.

[0037] The intersection angle between the side panel part 21 and the control panel part 22 is formed to be approximately 115 degrees. Thereby, the operator can easily visually recognize the switch 26A provided in the switch area 26 of the control panel part 22 and the dial 27A provided in the dial area 27, and can suppress incorrect operations of the switch 26A and the like.

[0038] The upper end part of the control panel part 22 is formed at substantially the same height as the upper end part of the shift lever 24 in the neutral posture. Also, the upper end part of the monitor 15 is formed at substantially the same height as the upper end part of the shift lever 24 in the neutral posture, and a switch for switching the display screen of the monitor 15 is provided below the monitor 15. Thereby, the operator can more easily operate the switch 26A and the like provided in the switch area 26 of the control panel part 22 without assuming a forward-bending posture.

[0039] As shown in FIGS. 12 and 13, the driver's seat 10 is supported by a support member 40B extending in the left-right direction that connects the front parts of a pair of left-right support members 40A extending in the front-rear direction of a movable frame 40 movable in the front-rear direction, and support members 40C erected at the rear parts of the pair of left-right support members 40A.

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

[0041] A pair of left and right fixed frames 41 are fixed to a rectangular lifting plate 42, and the lifting plate 42 is supported by a lifting device 43 having a rod that moves up and down in the vertical direction. Further, a lever 44 for maintaining and releasing the position of the driver's seat 10 is provided at the right front part of the moving frame 40 on the lifting plate 42. Thereby, the operator can move the driver's seat 10 in the front-rear direction and the vertical direction to a position suitable for his / her body shape.

[0042] At the rear part of a pair of left and right fixed frames 41 provided on a lifting plate 42 that moves up and down in the vertical direction, a connecting member 45 extending in the left-right direction is provided. The connecting member 45 is formed by a left-right extending portion 45A that extends in the left-right direction of a pair of left and right fixed frames 41, and an up-down extending portion 45B that extends upward after bending approximately 90 degrees to the left after extending leftward from the left fixed frame 41.

[0043] At the upper part of the up-down extending portion 45B, a support shaft 31 extending in the left-right direction is provided. At the left part of the support shaft 31, a collar 46 for preventing the swinging plate 32 externally fitted to 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. Further, at the right part of the support shaft 31, a regulating plate 48 for regulating the swinging angle of the side panel 20 is provided. Thereby, the driver's seat 10 and the side panel 20 move in conjunction in the vertical direction, and even when the driver's seat 10 is moved in the front-rear direction, the side panel 20 does not move in conjunction. Therefore, the operator can easily move the driver's seat 10 to a position suitable for his / her body shape.

[0044] In the present embodiment, the moving frame 40, the fixed frame 41, and the lifting plate 42 are collectively referred to as a driver's seat support member (the "first driver's seat support member" in the claims) 10A. Further, in the present embodiment, the connecting member 45 provided with the support shaft 31 is provided at the rear part of a pair of left and right fixed frames 41, but it can be provided on a pair of left and right support members 40A of the moving frame 40. Thereby, the driver's seat 10 and the side panel 20 can be moved in conjunction in the vertical direction and the front-rear direction.

[0045] As shown in Fig. 14, a circumferential groove 48A having a predetermined length is formed at a position separated from the support shaft 31 in the regulation plate 48 by a predetermined radius. The right part of a pin 29 extending in the left-right direction provided at the lower part of the cup holder 28 of the side panel 20 is inserted into the groove 48A. Thereby, it is possible to prevent the side panel 20 from being excessively swung to an open position. The posture of the side panel 20 is measured by a sensor 49 provided on the left surface of the regulation plate 48. When the side panel 20 is moved to an operation posture 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. When the side panel 20 is moved to an open posture 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] As shown in Figs. 15 and 16, when the side panel 20 is positioned in an operation posture extending in the front-rear direction, the electrical components 52 provided on the right surface of the left wall 61 of the cabin 60 are covered by the side panel 20. Thereby, it is possible to prevent an operator from accidentally contacting the electrical components 52 and to prevent disconnection of the harness connected to the electrical components 52.

[0047] As shown in Figs. 17 and 18, when the side panel 20 is positioned in an open posture extending in the vertical direction, a large space is formed on the left side of the operator. Thereby, the operator can lean out from the hatch 62 on the left side of the cabin 60 to easily check the clogged state of the grain straw of the cutting device 3. Further, the electrical components 52 provided on the right surface of the left wall 61 of the cabin 60 are exposed. Thereby, the operator can remove the protective cover 50 to easily perform maintenance and replacement work on the electrical components 52.

[0048] The electrical component 52 is provided on a power distribution plate 51 mounted on 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 order from the front side, and a controller 52D is provided below the fuse 52A and the small relay 52B. Also, in the vertical direction, a power supply line 53 for supplying electricity to the small relay 52B etc. extending in the front-rear direction is arranged between the fuse 52A etc. and the controller 52D. Thereby, the routing work of the power supply line 53 etc. can be easily performed, and the replacement work of the fuse 52A etc. that has malfunctioned can be easily performed.

[0049] As shown in FIGS. 19 and 20, a hollow portion 31A is formed in the central portion of the support shaft 31, and a harness 37 connecting the switch 26A, the monitor 15, and the controller 52D is inserted into the hollow portion 31A. Thereby, the side panel 20 can be smoothly moved from the operation posture to the open posture etc., and the disconnection of the harness 37 can also be suppressed.

[0050] The vertically extending portion 45B of the connecting member 45 is formed by extending to the left from the left fixing frame 41 and then extending upward by a predetermined length. Thereby, when the side panel 20 is positioned in the operation posture extending in the front-rear direction, the upper surface of the side panel portion 21 is provided at a position facing the elbow of the operator, and the operator can easily operate the shift lever 24 and the mode select lever 25.

[0051] Also, when the side panel 20 is positioned in the operation posture extending in the front-rear direction, in a rear view, 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 provided so as to overlap the left part of the driver's seat 10. Thereby, the length of the control section 5 in the left-right direction can be suppressed.

[0052] As shown in FIGS. 21 and 22, the vertically extending portion 45B of the connecting member 45 extends leftward from the left fixed frame 41 by a predetermined length. Thus, when the side panel 20 is positioned in the open posture extending in the vertical direction, the right part of the side panel portion 21 and the left part of the driver's seat 10 do not come into contact with each other, and the side panel portion 21 can be moved from the operating posture to the open posture.

[0053] Further, when the side panel 20 is positioned in the open posture extending in the vertical direction, the shift lever 24 provided on the side panel 20 is located above the backrest of the driver's seat 10, and the monitor 15 provided on the front side of the side panel 20 is located above the backrest of the driver's seat 10.

[0054] <Transmission of the Output Rotation of the Engine> As shown in FIG. 23, the output rotation of the engine E is transmitted to a hydraulic continuously variable transmission 16, which is a transmission mechanism that changes and outputs the rotational power of the engine E, and a transmission 17. The output rotation of the engine E transmitted to the input shaft of the hydraulic continuously variable transmission 16 is increased or decreased in the hydraulic continuously variable transmission 16 and output from the output shaft.

[0055] The output rotation of the output shaft of the hydraulic continuously variable transmission 16 is transmitted to the transmission 17.

[0056] The output rotation of the output shaft transmitted to the input shaft of the transmission 17 is increased or decreased in the transmission 17 and output from the first output shaft and the second output shaft.

[0057] The output rotation of the first output shaft decelerated or accelerated by the gear transmission mechanism 17A in the transmission 17 is transmitted to the traveling device 2 to rotate the crawler of the traveling device 2.

[0058] The output rotation of the second output shaft decelerated or accelerated by the gear transmission mechanism 17A in the transmission 17 and the gear transmission mechanism 17B provided on the downstream side thereof is transmitted to the mowing device 3 via the mowing clutch 18 to drive the lifting device, cutting device, etc. of the mowing device 3.

[0059] Thus, by operating the shift lever 24, the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3 can be increased or decreased simultaneously. Therefore, according to the lodging state of the cereal straws in the field, the shift lever 24 can be operated to increase or decrease the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3, enabling efficient cutting of the cereal straws.

[0060] Also, 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.

[0061] When the side panel 20 is moved from the operating position to the open position, the output signal of the sensor 49 becomes OFF, restricting the start of the engine E and making it inoperable. Also, when the output signal of the sensor 49 becomes OFF during the driving of the engine E, the driving of the engine E is stopped. This prevents incorrect operations such as the sudden start of the traveling device 2 during maintenance or replacement work of the electrical components 52 with the side panel 20 in the open position, enabling safe maintenance and replacement work of the electrical components 52.

[0062] Also, when the output signal of the sensor 49 becomes OFF, it is preferable to stop the driving of the hydraulic continuously variable transmission 16 and regulate the increase or decrease in the output rotation of the engine E. This enables safer maintenance and replacement work of the electrical components 52.

[0063] <Other support forms of the side panel> As shown in FIGS. 24 and 25, a handlebar 70 extending in the left - right direction is provided above the front panel 11. The left part of the handlebar 70 is fixed to the left wall 63 of the control unit 5, and the right part of the handlebar 70 is fixed to the right wall 64 of the control unit 5. Thereby, an operator can easily operate the operation lever 13 by grasping the left part of the handlebar 70 and maintaining a forward - bending posture. In this specification, the left wall 61 of the cab 60 and the left wall 63 of the control unit 5 indicate the same member.

[0064] At a portion of the handlebar 70 facing the support pipe 36 of the side panel 20, a front portion of a support member 71 extending rearward from the handlebar 70 is provided. 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 upper side and extends downward is formed at the rear portion of the upper side of the support member 71. Note that the guide groove 72 is preferably formed in an arc shape centered on the support shaft 31.

[0065] A pin 75 extending leftward from the support pipe 36 is provided at the front portion of the support pipe 36 of the side panel 20. When the side panel 20 is moved to the operating position, the pin 75 enters the guide groove 72 and the pin 75 abuts against the lower portion of the guide groove 72. On the other hand, when the side panel 20 is moved to the open position, the pin 75 moves outside the guide groove 72.

[0066] Thereby, the front portion of the side panel 20 can be supported by the guide groove 72, and vibrations generated in the side panel 20 during traveling can be suppressed. Further, when the pin 75 abuts against the lower portion of the guide groove 72, the vertical length of the guide groove 72 is formed such that the front and rear frames 30 of the side panel 20 are substantially horizontal in a side view.

[0067] In a side view, when the pin 75 abuts against the lower portion of the guide groove 72, the vertical length of the guide groove 72 is formed such that the front and rear frames 30 of the side panel 20 are substantially horizontal. Further, a reduced-diameter portion having a smaller diameter than other portions is formed at the right end portion of the pin 75, and a collar 76 and a fastening member 77 such as a bolt are provided at the reduced-diameter portion, and a screw for screwing the fastening member 77 is formed at the reduced-diameter portion. Thereby, the pin 75 can be inserted into the guide groove 72, and the pin 75 can be more firmly engaged at the lower portion of the guide groove 72, and vibrations generated in the side panel 20 during traveling can be further suppressed. Further, the pin 75 can be inserted into the guide groove 72, and the pin 75 can be engaged with the guide groove 72 at a location other than the lower portion of the guide groove 72 to easily adjust the inclination angle of the side panel 20 that is optimal for the operator.

[0068] As shown in FIGS. 26 and 27, a driver's seat support member (the "second driver's seat support member" in the claims) 80 formed of channel steel extending in the vertical direction is provided on the left wall 63 of the control unit 5. A rectangular plate member 81 formed of a steel plate is provided at the vertical middle part in the right part of the driver's seat support member 80.

[0069] A support shaft (the "second support shaft" in the claims) 82 extending in the left - right direction is provided at approximately the center of the plate member 81. The left part of the support shaft 82 is fixed to the driver's seat support member 80 and the plate member 81, and a swing plate 32 is rotatably supported on the left part of the support shaft 82. Thereby, the side panel 20 is fixed to the left wall 63 of the control unit 5 via the driver's seat support member 80 and the like, and vibrations generated in the side panel 20 during running can be suppressed. Also, vibrations transmitted to the driver's seat 10 via the side panel 20 can be blocked.

[0070] Long holes having a long axis in the vertical direction are formed in the upper and lower parts of the driver's seat support member 80, and it is fixed to the left wall 63 of the control unit 5 by fastening means 83 such as bolts inserted through these long holes.

[0071] Thereby, the driver's seat support member 80 can be moved up and down to adjust the vertical position of the side panel 20.

[0072] In order to avoid projections formed on the left wall 63, in a rear view, the driver's seat support member 80 preferably has a shape in which the vertical middle part is positioned on the right side rather than the upper or lower part. Also, on the right part of the support shaft 82, a collar 84 for preventing the swing plate 32 externally fitted to the support shaft 82 from falling off and a fastening member 85 such as a nut for fixing the collar 84 to the support shaft 82 are provided.

[0073] <Mode Select Switch> Instead of the mode select lever 25, a mode select panel (the "mode change operation unit" in the claims) 90 formed in a plate shape can be provided on the side panel portion 21. Note that the shape of the mode select panel 90 is not limited to a plate shape, and any shape necessary for operation can be adopted. Thereby, it is possible to further suppress the obstruction of the operator's field of view, and it is possible to easily position the side panel 20 in an open posture extending in the vertical direction without worrying about contact between the driver's seat 10 and the mode select lever 25.

[0074] As shown in FIG. 28, on the left part of the mode select panel 90, an operation unit 91 for changing the mode is provided, and on the right part, a display unit 92 for displaying the traveling speed of the traveling device 2 and the like is provided.

[0075] The operation unit 91 includes a mode switch (the "first switch" in the claims) 91A with "△" printed on the surface for changing the mode, a mode switch (the "second switch" in the claims) 91B with "▽" printed on the surface for changing the mode, and a mowing switch (the "third switch" in the claims) 91C with "mowing" printed on the surface for connecting and disconnecting the mowing clutch 18 and the threshing clutch 19. The mowing switch 91C is provided at the middle in the front-rear direction between the mode switch 91A and the mode switch 91B.

[0076] The display unit 92 is composed of, in order from the front side, a speed display unit 92A with "H" printed on the surface indicating that the traveling speed of the traveling device 2 is high, a speed display unit 92B with "M" printed on the surface indicating that the traveling speed of the traveling device 2 is medium speed, a speed display unit 92C with "L" printed on the surface indicating that the traveling speed of the traveling device 2 is low speed, and a mowing and threshing display unit 92D with "mowing" printed on the surface indicating the driving state of the mowing device 3 and the threshing device 4.

[0077] The modes include a working mode in which the mowing device 3 and the threshing device 4 are driven to perform mowing and threshing operations in the field, and a field movement mode in which the driving of the mowing device 3 and the threshing device 4 is stopped to move between fields. The working mode includes a standard working mode (the "first working mode" in the claims) in which the traveling speed of the traveling device 2 is set to high speed, a standard low-speed working mode (the "second working mode" in the claims) in which the traveling speed of the traveling device 2 is set to medium speed, and a lodging working mode (the "third working mode" in the claims) in which the traveling speed of the traveling device 2 is set to low speed.

[0078] The traveling speed of the traveling device 2 in each mode is highest in the field movement mode, and decreases in the order of the standard working mode, the low-speed working mode, and the lodging working mode.

[0079] FIG. 29 shows the display unit 92 in the standard working mode. In the standard working mode, the traveling speed of the traveling device 2 and the mowing speed of the mowing device 3 are set to high speed to perform mowing and threshing operations.

[0080] The display unit 92 causes the speed display unit 92A and the mowing and threshing display unit 92D to light up in correspondence with the traveling speed of the traveling device 2 in the standard working mode and the driving states of the mowing device 3 and the threshing device 4. Thereby, the operator can visually recognize the display unit 92 to confirm the working mode.

[0081] The driving states of the mowing device 3 and the threshing device 4 can be operated by the mowing switch 91C.

[0082] When the mowing switch 91C is long-pressed for 3 to 5 seconds, the mowing clutch 18 and the threshing clutch 19 are connected, the mowing device 3 and the threshing device 4 are driven, and the mowing and threshing display unit 92D lights up. Also, when the mowing switch 91C is pressed, the connection of the mowing clutch 18 and the threshing clutch 19 is released, the driving of the mowing device 3 and the threshing device 4 stops, and the mowing and threshing display unit 92D blinks. Before the mowing clutch 18 and the threshing clutch 19 are connected and the mowing device 3 and the threshing device 4 are driven, a warning display such as "Start driving of mowing device and threshing device" is performed on the monitor 15.

[0083] When the cutting switch 91C is long-pressed, the monitor 15 will display messages such as "Start driving the cutting device and the threshing device", which can draw the operator's attention. Also, when the cutting switch 91C is pressed, the controller 52D will increase the output rotation speed of the engine E, allowing the combine to quickly move to the vicinity of the truck for grain transportation.

[0084] Figure 30 shows the display unit 92 in the standard low-speed operation mode. Pressing the mode switch 91B can change the operation mode from the standard operation mode to the standard low-speed operation mode. Also, pressing the mode switch 91A can return the operation mode from the standard low-speed operation mode to the standard operation mode.

[0085] When the mode switch 91A is pressed in the standard low-speed operation mode, the controller 52D will drive the operating means (not shown) for the gear transmission mechanism 17A to change the meshing gears of the gear transmission mechanism 17A of the transmission 17, increasing the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3 to a high speed.

[0086] When the mode switch 91B is pressed in the standard operation mode, the controller 52D will drive the operating means for the gear transmission mechanism 17A to change the meshing gears of the gear transmission mechanism 17A of the transmission 17, reducing the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3 to a medium speed.

[0087] The controller 52D can also drive the 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, increasing or decreasing the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3. Note that the shift lever 14 changes the opening degree of the swash plate of the hydraulic motor of the hydraulic continuously variable transmission 16 to increase or decrease the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3.

[0088] In the standard low-speed operation mode, the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3 are set to medium speed for cutting and threshing operations.

[0089] The display unit 92 causes the speed display unit 92B and the mowing and threshing display unit 92D to light up in accordance with the traveling speed of the traveling device 2 and the driving states of the mowing device 3 and the threshing device 4 in the standard low-speed operation mode. Thereby, the operator can check the operation mode by visually recognizing the display unit 92.

[0090] Fig. 31 shows the display unit 92 in the lodging operation mode. When the mode switch 91B is pressed, the operation mode can be changed from the standard low-speed operation mode to the lodging operation mode. Further, when the mode switch 91A is pressed, the operation mode can be returned from the lodging operation mode to the standard low-speed operation mode.

[0091] When the mode switch 91A is pressed in the lodging operation mode, the controller 52D drives an operating means (not shown) for the gear transmission mechanism 17A to change the meshing gears of the gear transmission mechanism 17A of the transmission 17, increasing the traveling speed of the traveling device 2 and the mowing speed of the mowing device 3 to medium speed.

[0092] When the mode switch 91B is pressed in the standard low-speed operation mode, the controller 52D drives an operating means for the gear transmission mechanism 17A to change the meshing gears of the gear transmission mechanism 17A of the transmission 17, reducing the traveling speed of the traveling device 2 to low speed. Further, the controller 52D drives an operating means (not shown) for the gear transmission mechanism 17B to drive the gear transmission mechanism 17B, increasing the mowing speed of the mowing device 3 to medium speed or high speed. Thereby, the lodged culms can be efficiently lifted and mowed by the lifting device of the mowing device 3.

[0093] In the lodging operation mode, the traveling device 2 travels at low speed, and the mowing speed of the mowing device 3 is increased to high speed to perform mowing and threshing operations.

[0094] The display unit 92 causes the speed display unit 92C and the mowing and threshing display unit 92D to light up in accordance with the traveling speed of the traveling device 2 and the driving states of the mowing device 3 and the threshing device 4 in the lodging operation mode. Thereby, the operator can check the operation mode by visually recognizing the display unit 92.

[0095] FIG. 32 shows the display unit 92 in the field movement mode. When the mode switch 91A is pressed and held 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 and held for 3 to 5 seconds, the mode can be returned from the field movement mode to the work mode.

[0096] 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 to change the meshing gears of the gear transmission mechanism 17A of the transmission 17, increasing the traveling speed of the traveling device 2 to the maximum speed, and at the same time, releases the connection of the cutting clutch 18 and the threshing clutch 19 to stop the driving of the cutting device 3 and the threshing device 4.

[0097] When the cutting switch 91C is pressed and held, a display such as "Change to field movement mode" is shown on the monitor 15. This can alert the operator. Also, when the cutting switch 91C is pressed and held, the controller 52D increases the output rotation speed of the engine E. Thereby, the vehicle can move quickly between fields.

[0098] When the mode switch 91B is pressed and held for 3 to 5 seconds in the field movement mode, the controller 52D connects the cutting clutch 18 and the threshing clutch 19 to drive the cutting device 3 and the threshing device 4, and at the same time, drives the operating means for the gear transmission mechanism 17A to change the meshing gears of the gear transmission mechanism 17A of the transmission 17, reducing the traveling speed of the traveling device 2 and the cutting speed of the cutting device 3 to the speed of the work mode before the change, that is, high speed if the work mode before the change is the standard work mode, medium speed if it is the standard low-speed work mode, low speed for the traveling speed of the traveling device 2 and high speed for the cutting speed of the cutting device 3 if it is the lodging work mode. Thereby, it is possible to return to the work mode before the mode change, reduce the operator's discomfort, and efficiently resume the work mode. Also, when the cutting switch 91C is pressed and held, a display such as "Change to work mode, start driving the cutting device and the threshing device" is shown on the monitor 15. This can alert the operator.

[0099] In the field movement mode, the traveling speed of the traveling device 2 reaches the maximum speed, and the drives of the mowing device 3 and the threshing device 4 are stopped.

[0100] The display unit 92 causes the speed display unit 92A to light up more brightly corresponding to the traveling speed of the traveling device 2 in the field movement mode, and causes the mowing and threshing display unit 92D to blink corresponding to the drive states of the mowing device 3 and the threshing device 4. Thereby, an operator can visually recognize the display unit 92 to confirm the field movement mode.

Explanation of Signs

[0101] 1 Body frame 2 Traveling device 3 Mowing device 4 Threshing device 5 Control unit 10 Operator's seat 10A Operator's seat support member (first operator's seat support member) 11 Front panel 16 Hydraulic continuously variable transmission 20 Side panel 21 Side panel section (first panel section) 21A Hanging section 22 Control panel section (second panel section) 24 Shift lever 31 Support shaft (first support shaft) 63 Left wall 80 Operator's seat support member (second operator's seat support member) 82 Support shaft (second support shaft) 90 Mode selection panel 91A Mode switch (first switch) 91B Mode switch (second switch) 91C Mowing switch (third switch) E Engine

Claims

1. A combine harvester is provided with a traveling device (2) below a body frame (1) equipped with an engine (E), a harvesting device (3) for harvesting crop straw in a field in front of the body frame (1), a threshing device (4) for threshing crop straw on the rear left side of the harvesting device (3), a control unit (5) for an operator to board on the rear right side of the harvesting device (3), and a transmission mechanism for changing the output rotation of the engine (E) and outputting it to the traveling device (2). In the combine harvester, a front panel (11) is provided in front of the driver's seat (10) of the control unit (5), and a side panel (20) is provided on the left side of the driver's seat (10). a shift lever (24) for operating a transmission mechanism for changing the output rotation of the engine (E) and a mode change operation unit (90) for performing a predetermined mode change are provided on the side panel (20). The mode change operation unit (90) separately includes 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 operation unit (91) can change both the gear ratio of the transmission mechanism and the connection state of the clutches of the harvesting device (3) and the threshing device (4) by a single operation. Combine harvester.

2. 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) are provided on the mode change operation unit (90). When the first switch (91A) is operated for a predetermined time, the mode is changed from a working 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 driving of the harvesting device (3) and the threshing device (4) is stopped. The combine harvester according to claim 1, wherein when the second switch (91B) is operated for a predetermined time, the mode is changed from the field movement mode to the working mode.

3. The working mode is formed by a first working mode in which the traveling speed of the traveling device (2) is high, a second working mode in which the traveling speed of the traveling device (2) is medium, and a third working mode in which the traveling speed of the traveling device (2) is low. The combine harvester according to claim 2, wherein when the second switch (91B) is operated and the mode is changed from the second working mode to the third working mode, the harvesting speed of the harvesting device (3) is switched from low speed to medium speed or 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 driving of the cutting device (3) and the threshing device (4) stops. The combine according to claim 3, wherein when the third switch (91C) is operated for a predetermined time, the cutting device (3) and the threshing device (4) are configured to be driven.

Images