JP6432855B1 - Combine - Google Patents

Abstract

An object of the present invention is to provide a combine in which an operation lever can be formed compactly and a rod such as a wire can be easily routed. An operating mechanism operated by an operating lever (30) includes a first swinging portion (32) swinging in a left-right direction and a left-right direction provided on an upper portion of the first swinging portion (32). A second oscillating portion (59) having an operating lever (30) oscillating in the front-rear direction about the axis of the existing second support shaft (48), and a left-right direction provided on the fixed portion (31) A third rocking part (75) having a first plate (55) that rocks in the vertical direction about the axis of the third support shaft (39) extending to the first pivoting part (32). ) Is attached to one end of the first connecting member (60) for turning the traveling device (2) to the extending portion (40A) extending in the left-right direction, and the first plate ( 55) is attached to one end of the second connecting member (65) for moving the reaping device (3) up and down, and the second swinging part (59) is swung. The third oscillating member in conjunction with (75) interlocking mechanism for swinging (76) provided. [Selection] Figure 9

Description

  The present invention relates to a combine in which an operation lever is provided in a control unit.

  In a conventional combine, a technique is known in which an operation lever for performing a turning operation of a traveling device and a raising / lowering operation of a reaping device is provided at a front portion of a control unit. (See Patent Documents 1 and 2)

JP 2003-79222 A JP 2017-30515 A

  However, in the technique of Patent Document 1, the traveling switching valve that brakes the crawler of the traveling device is operated by two operation wires connected to the left side of the member extending in the left-right direction provided at the lower portion of the operation lever. However, since the switching valve for cutting that drives the lifting cylinder of the cutting device is operated by the two operating wires connected to the front and rear portions of the member extending in the front-rear direction, the operating lever becomes large and the There is a problem that a large occupied space must be secured in the front portion, and the operation of wiring the operation wire for connecting the operation lever and the switching valve becomes complicated.

  Further, in the technique of Patent Document 2, since the mowing device is moved up and down by the elevating button provided on the operation lever, there is a problem that the mowing device cannot be moved up and down when the electric wiring is disconnected. It was.

  Then, the main subject of this invention is providing the combine which can form a control lever compactly and can perform the wiring work of rods, such as a wire, easily.

The present invention that has solved the above problems is as follows.
That is, the invention described in claim 1 is provided with a traveling device (2) including a pair of left and right crawlers on the lower side of the machine body frame (1), and a reaping device ( 3), a steering part (5) is provided behind the reaping device (3), and the turning operation of the traveling device (2) and the raising and lowering of the reaping device (3) are provided at the front of the steering part (5). In a combine provided with an operation lever (30) for operation,
The operation mechanism operated by the operation lever (30) includes a fixed portion (31) fixed to the frame (26) side of the control portion (5), and a front-rear direction provided on the upper portion of the fixed portion (31). A first swinging portion (32) that swings in the left-right direction about the axis of the first support shaft (36, 43) extending to the first support shaft, and an upper portion of the first swinging portion (32). A second swinging portion (59) having an operation lever (30) swinging in the front-rear direction about the axis of the second support shaft (48) extending in the left-right direction, and the fixing portion (31) A third oscillating portion (75) having a first plate (55) that oscillates in the vertical direction about the axial center of the third support shaft (39) that extends in the left-right direction; 1st connection which carries out turning operation of the said traveling apparatus (2) to the extension part (40A) extended in the left-right direction in 1 rocking | swiveling part (32). One end of the member (60) is attached, and one end of a second connecting member (65) for raising and lowering the reaping device (3) is attached to the first plate (55) of the third swinging part (75), The combine is provided with an interlocking mechanism (76) that swings the third swinging part (75) in conjunction with the swinging of the second swinging part (59).

  According to a second aspect of the present invention, the second swing part (59) is provided with a second plate (52) that swings integrally with the operation lever (30), and the third swing part (75). And an engaging member (54) that swings integrally with the first plate (55) about the axis of the third support shaft (39), and is formed below the second plate (52). The upper end of the engagement member (54) is inserted into the elongated vertical hole (52A) to constitute the interlock mechanism (76), and the rear part is opened inside the fixed part (31). A front guide member (37) having a front groove (37A) and a rear guide member (38) having a rear groove (38A) whose front part is opened are provided to face each other in the front-rear direction, and the operation lever (30) is operated. In a state where the second swinging portion (59) is swung forward, the second plate (52) is Enters the rear groove (38A), and in the state where the second rocking portion (59) is swung rearward by the operation of the operation lever (30), the front portion of the second plate (52) is the front groove ( 37A). The combine according to claim 1, wherein the combiner is configured such that the left and right swinging of the first swinging portion (32) by the operation lever (30) is restricted.

  According to a third aspect of the present invention, in the plan view, the front groove (37A) is formed in a V shape with an open rear portion, and the rear groove (38A) is formed in a V shape with an open front portion. The combine according to claim 2.

  According to the first aspect of the present invention, the operation mechanism operated by the operation lever (30) includes the fixing portion (31) fixed to the frame (26) side of the control portion (5), and the fixing portion (31). A first oscillating portion (32) that oscillates in the left-right direction around the axial center of a first support shaft (36, 43) provided in the upper part and extending in the front-rear direction, and a first oscillating portion (32). A second oscillating portion (59) having an operating lever (30) oscillating in the front-rear direction about the axis of the second support shaft (48) extending in the left-right direction provided at the top of A third swinging portion (75) having a first plate (55) swinging up and down around the axis of a third support shaft (39) extending in the left-right direction provided in the portion (31) A first swinging operation of the traveling device (2) on the extending portion (40A) extending in the left-right direction of the first swinging portion (32). One end of the linking member (60) is attached, and one end of the second connecting member (65) for raising and lowering the reaping device (3) is attached to the first plate (55) of the third swinging part (75), Since the interlocking mechanism (76) that swings the third swinging part (75) in conjunction with the swinging of the swinging part (59) is provided, the operation lever (30) can be formed compactly, and the first connecting part The routing work of (60) and the second connecting portion (65) can be easily performed.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the second plate (52) swings integrally with the operating lever (30) on the second swing portion (59). The third swinging portion (75) is provided with an engaging member (54) that swings integrally with the first plate (55) about the axis of the third support shaft (39). An upper end portion of the engaging member (54) is inserted into an elongated hole (52A) formed in the lower portion of the plate (52) to constitute the interlocking mechanism (76), and inside the fixing portion (31), A front guide member (37) having a front groove (37A) whose rear part is opened and a rear guide member (38) having a rear groove (38A) whose front part is opened are provided facing each other, and an operation lever (30 ), The second swinging portion (59) is swung forward by the operation of the second plate (52). Enters the rear groove (38A), and in the state where the second rocking part (59) is rocked backward by the operation of the operation lever (30), the front part of the second plate (52) is the front groove (37A). Since the left and right swinging of the first swinging portion (32) by the operation lever (30) is restricted, the second swinging portion (59) is swung back and forth. The swinging operation in the left-right direction of one swinging part (31) can be restrained. Accordingly, the turning operation of the traveling device (2) is restrained during the lifting operation of the reaping device (3), so that a decrease in the amount of oil supplied to the device that drives the reaping device (3) to be raised and lowered is suppressed. (3) can be moved up and down smoothly. For example, by quickly raising the reaping device (3), the occurrence of a problem such that the reaping device (3) is pushed into the field scene and is damaged can be reduced. it can.

  According to the invention of claim 3, in addition to the effect of the invention of claim 2, in plan view, the front groove (37A) is formed in a V shape with the rear part opened, and the rear groove (38A) is formed. Since the front part is formed in a V shape, the first swinging part (31) is automatically set to the center position in the left-right direction when the second swinging part (59) is swung back and forth. Can be restored.

It is a front view of a combine. It is a top view of a combine. It is a left view of a combine. It is a front view of a control part. It is a left view of a control part. It is a right view of a control part. It is a front view of an operation lever. It is a left view of an operation lever. It is a perspective view of an operation lever. It is a perspective view of the fixing | fixed part and swing part of an operation lever. It is a hydraulic circuit diagram.

  The present invention will be described with reference to the drawings. From the viewpoint of the pilot, the front side is the front side, the rear side is the rear side, the right hand side is the right side, and the left hand side is the left side.

  As shown in FIGS. 1 to 3, the combine is provided with a traveling device 2 composed of a pair of left and right crawlers traveling on the soil surface on the lower side of the body frame 1, and harvests grain culm on the front side of the body frame 1. A control unit provided with a reaping device 3, provided with a threshing device 4 for threshing and sorting cereals harvested on the rear left side of the reaping device 3, and a driver boarding on the rear right side of the reaping device 3 5 is provided.

  An engine room 6 on which the engine is mounted is provided below the control unit 5, and a Glen tank 7 is provided on the rear side of the control unit 5 to store grain that has been threshed and sorted. A discharge auger (not shown) is provided on the side to discharge the grain to the outside.

  A front panel 12 on which a speed display panel or the like is disposed is provided on the front side of the operation seat 11 of the control unit 5, and a side on which a main transmission lever or the like for increasing or decreasing the traveling speed is disposed on the left side of the operation weir 11. A panel 13 is provided. Further, on the right part of the front panel 12, there is provided an operation lever 30 for operating the brake of the traveling device 2 to perform the turning operation of the machine body and the lifting operation of the reaping device 3.

  As shown in FIGS. 4 to 6, the control unit frame 20 forming the framework of the control unit 5 includes a vertical frame 21 extending in the vertical direction and a vertical frame 21 arranged at a predetermined interval in the horizontal direction. It is formed of a horizontal frame 22 extending in the left-right direction to be connected and a front-rear frame 23 extending in the front-rear direction for connecting the vertical frames 21 arranged at a predetermined interval in the front-rear direction.

  The vertical frame 21 is arranged in the vertical frame 21A arranged in the front right part, the vertical frame 21B arranged in the front left part, the vertical frame 21C arranged in the rear right part, and the rear left part. It is formed from a vertical frame 21D.

  The horizontal frame 22 includes a horizontal frame 22A connecting the upper part of the vertical frame 21A and the upper part of the vertical frame 21B, a horizontal frame 22B connecting the lower part of the vertical frame 21A and the lower part of the vertical frame 21B, and the upper part of the vertical frame 21C. It is formed from a horizontal frame 22C that connects upper portions of the frame 21D. The left portion of the horizontal frame 22C extends to the left beyond the vertical frame 21D.

  The front and rear frame 23 connects the upper part of the vertical frame 21B and the left end of the horizontal frame 22C, and the rear part of the front and rear frame 23 extends rearward beyond the left end of the horizontal frame 22C.

  A plate frame 25 formed by bending a sheet metal on which a step plate on which the operator gets on and off is placed is provided at the lower part of the control unit frame 20. The plate frame 25 includes a horizontal plate frame 25A disposed on the front side of the lower portion of the vertical frame 21A and the lower portion of the vertical frame 21B, a front and rear plate frame 25B disposed on the right rear portion of the horizontal plate frame 25A, and a horizontal plate frame 25A. It is formed from a front and rear plate frame 25C arranged at the left rear part.

  The front / rear plate frame 25B is connected to the lower part of the vertical frame 21A and the lower part of the vertical frame 21C. The front / rear plate frame 25C is shifted to the vertical frame 21B side of the horizontal frame 22B and the lower part of the vertical frame 21 when viewed from the front. The horizontal plate frame 25C is connected to the front portion of the front and rear plate frame 25B and the front portion of the front and rear plate frame 25C.

  The upper part of the vertical frame 21A and the front part of the front and rear plate frame 25B are connected by a reinforcing frame 26. A support plate 27 for attaching the operation lever 30 is provided on the upper portion of the reinforcing frame 26.

  As shown in FIGS. 7 and 8, the operation mechanism operated by the operation lever 30 includes a fixing portion 31 fixed to a left surface which is an inner surface of the support plate 27 by a fastening means such as a bolt via a weld nut 28, A first swing that swings left and right about a support shaft (“first support shaft” in the claims) 36 and a pin (“first support shaft” in the claims) 43 provided on the upper portion of the fixing portion 31. And a lower portion of the operating lever 30 that swings in the front-rear direction around a support shaft (“second support shaft” in the claims) 48 provided on the upper portion of the first swinging portion 32. A first part 55 is fixed to which the front part of the first plate 55 that swings up and down about a swing part 59 and a support shaft (“third support shaft” in the claims) 39 provided on the outer wall of the fixed part 51 is fixed. 3 oscillating portions 75 are formed.

  As shown in FIGS. 9 and 10, the fixing portion 31 includes a fixing frame 34 formed in a substantially U shape in a cross-sectional view, an opening 35 formed in the upper portion of the front wall of the fixing frame 34, and a fixing portion 31. The support shaft 36 provided on the upper part of the rear wall of the frame 34 and extending toward the rear side, and the swinging in the left-right direction provided on the lower side of the opening 35 on the rear surface of the front wall of the fixed frame 34 are restricted. A front guide member 37, a rear guide member 38 provided on the lower side of the support shaft 36 on the front surface of the rear wall of the fixed frame 34, and a right wall that is an outer wall of the fixed frame 34. It is formed with a support shaft 39 extending toward the left side provided at the center in the front-rear direction below the front guide member 37 and the rear guide member 38. Further, in the front view, the center line of the opening 35 is provided to coincide with the axis of the support shaft 36.

  In a longitudinal sectional view, the front guide member 37 is formed in an inverted L shape, and before the front portion of the second plate 52 of the first swinging portion 32 enters the extending portion extending toward the rear side. A groove 37A is formed. Further, in the longitudinal sectional view, the rear guide member 38 is formed in an inverted L shape, and the rear portion of the second plate 52 of the first swinging portion 32 enters the extended portion extending toward the front side. A groove 38A is formed. The extension part of the front guide member 37 is provided at the same height as the extension part of the rear guide member 38 in a side view, and the front groove 37A of the front guide member 37 and the rear groove of the rear guide member 38 in a plan view. 38A is provided on the same straight line extending in the front-rear direction.

  The first oscillating portion 32 is formed by bending a front wall 40, an upper wall 41, and a rear wall 42 into a substantially inverted U shape in a longitudinal sectional view. A pin 43 extending in the front-rear direction inserted through the opening 35 of the fixing portion 31 is provided at a portion shifted to the right side in the left-right direction on the front wall 40. A pin 44 extending in the front-rear direction for attaching one end of a connecting member 60 such as a wire or a rod is provided. Thereby, since the connection member 60 is provided only in the left part of the front wall 40, the 1st rocking | swiveling part 32 can be designed compactly and the space which the 1st rocking | swiveling part 32 occupies can be made small. The other end of the connecting member 60 is attached to the relief valve 61, and one end of the connecting member 60 is formed by cutting out material or resin molding.

  A left wall 46 and a right wall 47 extending upward are provided on both sides of the middle portion in the front-rear direction of the upper wall 41, and the left wall 46 and the right wall 47 are supported by a support shaft 48 extending in the left-right direction. It is connected.

  An opening 49 through which the support shaft 36 of the fixed portion 31 is inserted is formed in a substantially intermediate portion between the vertical direction and the width direction of the rear wall 42. Further, in the front view, the axis of the pin 43 is provided so as to coincide with the center line of the opening 49. As a result, the first oscillating portion 32 is smoothly oscillated in the left-right direction around the opening 35 and the support shaft 36 of the fixed portion 31, and the relief valve 61 and the switching valve 62 are smoothly moved via the connecting member 60. Can be operated.

  The front portion of the pin 43 is formed to extend to the front side of the front wall 40. An extension portion 40A extending to the front side is formed in a portion located below the pin 43 in the front wall 40, and a portion located below the extension portion 40A in the front wall of the fixed frame 34 is A round bar 33 extending to the front side is provided. A biasing means 45 such as a spring is mounted on the front portion of the pin 43, one end of the lower portion of the biasing means 45 engages with the extending portion 40A, and the other end of the lower portion of the biasing means 45 is a round bar. 33 is engaged. Thereby, when the operation lever 30 is not operated, the 1st rocking | swiveling part 32 can be maintained in a neutral attitude | position.

  In the present specification, a posture in which the first swinging portion 32 swings leftward about the opening 35 and the support shaft 36 of the fixed portion 31 is referred to as a left-side posture, and the first swinging portion 32 is an opening of the fixed portion 31. A posture that swings to the right about the part 35 and the support shaft 36 is called a right posture. When the first swinging portion 32 swings from the neutral posture to the left posture, the pin 44 moves downward and the connecting member 60 also moves downward, and the biasing means 61A such as a spring of the relief valve 61 is moved. As the pressing force decreases, the switching valve 62 moves to the left, and the brake provided on the left crawler of the traveling device 2 is activated to enter the left turn state. On the other hand, when the first swinging portion 32 swings from the neutral posture to the right posture, the pin 44 moves upward, the connecting member 60 also moves upward, and the pressing force of the biasing means 61A of the relief valve 61 is increased. The switching valve 62 increases to the right side, and the brake provided on the right crawler of the traveling device 2 is activated to enter the right turn state.

  An upper boss portion 50 that can swing back and forth around the support shaft 48 is fitted on the support shaft 48 of the first swinging portion 32. A lower portion of the operation lever 30 extending upward and having a handle portion provided at the upper portion is fixed to an upper portion of the outer peripheral portion of the upper boss portion 50, and the outer peripheral portion of the upper boss portion 50 opposite to the operation lever 30. The upper part of the second plate 52 that is inserted into a long hole 41A having a long diameter in the front-rear direction formed in the upper wall 41 of the first oscillating part 32 and extends downward is fixed to the lower part of the first swinging part 32. In addition, an elongated hole 52A having a long axis in the vertical direction is formed in the lower portion of the second plate 52.

  A lower boss portion 53 that can swing in the front-rear direction around the support shaft 39 is fitted on the support shaft 39 of the fixed portion 31. The upper part of the outer peripheral part of the lower boss part 53 is engaged with the inner peripheral part of the elongated hole 52A of the second plate 52, and the lower part of the engaging member 54 in which a round bar is bent into a horizontal L shape in front view. The front portion of the first plate 55 extending to the rear side is fixed to the left rear portion of the outer peripheral portion of the lower boss portion 53. A pin 56 extending in the left-right direction for attaching one end of a connecting member 65 such as a wire or a rod is provided at the rear portion of the first plate 55. In addition, in the front view, the connecting member 65 is attached so as to be shifted to the right side of the connecting member (“first connecting member” in the claims) 60. Thereby, in the front view, the connecting member (“second connecting member” in the claims) 65 is provided on the rear right side of the connecting member 65, so the second swinging portion 59 and the second swinging portion 59 are provided. The third oscillating portion 75 that oscillates in conjunction with the oscillating movement can be designed to be compact, and the space occupied by the second oscillating portion 59 and the third oscillating portion 75 can be reduced. The other end of the connecting member 65 is attached to the switching valve 67, and one end of the connecting member 65 is formed by cutting out material or resin molding.

  In this specification, in order to facilitate understanding, the upper boss portion 50, the operation lever 30, and the second plate 52 that swing in the front-rear direction about the support shaft 48 are collectively referred to as the second swing portion 59. The lower boss portion 53, the engaging member 54, and the first plate 55 that swing in the front-rear direction around the support shaft 39 are collectively referred to as a third swing portion 75, and the second plate 52, long The hole 52A and the engaging member 54 are collectively referred to as an interlocking mechanism 76.

  The left portion of the support shaft 48 is formed to extend to the left side of the left wall 46. An extension portion 46A extending to the left side is formed in a portion located on the upper side of the support shaft 48 in the left wall 46, and a portion located on the upper side of the extension portion 46A in the left wall 46 of the operation pipe is provided on the left side. A round pipe 57 is provided. An urging means 58 such as a spring is attached to the left portion of the support shaft 48, one end of the upper portion of the urging means 58 engages with the extending portion 46A, and the other end of the upper portion of the urging means 58 is round. The pipe 57 is engaged. Thereby, when the operation lever 30 is not operated, the upper boss portion 50 can be maintained in the neutral posture.

  In this specification, the posture in which the second swinging portion 59 swings forward about the support shaft 48 is referred to as a front posture, and the second swinging portion 59 swings rearward about the support shaft 48. Is called the rear posture. When the second swinging portion 59 swings from the neutral posture to the front posture, the third swinging portion 75 swings clockwise about the support shaft 39 and is provided at the rear portion of the first plate 55. 56 is moved downward, the connecting member 65 is also moved downward, the switching valve 67 is moved to the right side, the rod of the lifting cylinder 69 is moved into the tube, and the length of the lifting cylinder 69 becomes the shortest. 3 is in a lower standby state located at the lower end. On the other hand, when the second swinging portion 59 moves from the neutral posture to the rearward posture, the third swinging portion 75 swings counterclockwise about the support shaft 39 and is provided at the rear portion of the first plate 55. The pin 56 is moved upward, the connecting member 65 is also moved upward, the switching valve 67 is moved to the left side, the rod of the lifting cylinder 69 is moved out of the tube, and the length of the lifting cylinder 69 is the longest. The apparatus 3 enters an upper standby state where the apparatus 3 is located at the upper end.

  When the second swing part 59 is moved to the front posture, the rear part of the second plate 52 enters the rear groove 38A of the rear guide member 38 of the fixed part 31 and swings the first swing part 32 in the left-right direction. Check. Similarly, when the second swinging portion 59 is moved to the rear side posture, the front portion of the second plate 52 enters the front groove 37A of the front guide member 37 of the fixed portion 31 and the first swinging portion 32 is moved. Checks the horizontal swing. As a result, when the reaping device 3 is in the lower standby state or the upper standby state, the left turning state and the right turning state of the traveling device 2 are braked so that the reaping device 3 collides with a basket or the like and is damaged. Can be prevented.

  In a plan view, the shape of the front groove 37A of the front guide member 37 of the fixed portion 31 is formed in a V shape having an open portion at the rear, and the shape of the rear groove 38A of the rear guide member 38 of the fixed portion 31 is changed to the front It is preferable to form it in a V shape having an open part in the part. Thereby, when the 2nd rocking | swiveling part 59 rock | fluctuates from a neutral attitude | position to a front side attitude | position or a rear side attitude | position, the 1st rocking | swiveling part 32 can return to a neutral attitude | position automatically.

  Next, the hydraulic circuit will be described. As shown in FIG. 11, the hydraulic circuit includes a relief valve 61 and a switching valve 62 that brake the left and right crawlers of the traveling device 2 in association with the first swinging portion 32 that swings in the left-right direction. The tip of the engaging member 54 of the third oscillating part 75 is engaged with the elongated hole 52A of the second plate 52 of the oscillating second oscillating part 59 to drive the elevating cylinder 69 that elevates and lowers the reaping device 3. A switching valve 67, a traveling hydraulic continuously variable transmission 70 that increases or decreases the speed of the traveling device 2 linked to an operation lever or the like provided on the side panel 13, and a switching valve 71 that moves the reaping device 3 in the left-right direction. Is provided.

  The switching valve 62 is pushed and pulled by urging means 62 </ b> A such as a return spring provided on the left and right of the switching valve 62. When the first swinging portion 32 swings from the neutral posture to the left posture, the pressing force of the biasing means 61A such as a spring provided between the lower end portion of the connecting member 60 and the left portion of the relief valve 61 decreases. Then, the switching valve 62 moves to the left side. The relief valve 61 and the switching valve 62 are connected by an operation shaft 63. As a result, the left push cylinder 64A that operates the brake of the left crawler of the traveling device 2 is activated, and the traveling device 2 enters the left-turning state. On the other hand, when the first swing part 32 swings from the neutral position to the right position, the pressing force of the urging means 61A increases and the switching valve 62 moves to the right. As a result, the right push cylinder 64B that operates the brake of the right crawler of the traveling device 2 is activated, and the traveling device 2 is turned to the right.

  The switching valve 67 is pushed and pulled by biasing means 67 </ b> A such as a return spring provided on the left and right of the switching valve 67. When the second swing part 59 swings from the neutral position to the front position and the lower part of the first plate 55 of the third swing part 75 swings downward about the support shaft 39, the switching valve 67 is on the right side. Move to. Thereby, the oil on the piston side of the lifting cylinder 69 flows out, the oil on the rod side flows in, the rod of the lifting cylinder 69 moves into the tube, the length of the lifting cylinder 69 becomes the shortest, and the cutting device 3 is at the lower end. The lower standby position is reached. On the other hand, when the second swinging portion 59 swings from the neutral posture to the rearward posture and the lower portion of the first plate 55 of the third swinging portion 75 swings upward about the support shaft 39, the switching valve 67 moves to the left. Thereby, the oil on the rod side of the lifting cylinder 69 flows out, the oil on the piston side flows in, the rod of the lifting cylinder 69 moves out of the tube, the length of the lifting cylinder 69 becomes the longest, and the cutting device 3 is at the upper end. It is in the upper standby state.

DESCRIPTION OF SYMBOLS 1 Airframe frame 2 Traveling apparatus 3 Cutting device 5 Steering part 30 Operation lever 31 Fixing part 32 1st rocking | swiveling part 36 A spindle (1st spindle)
37 Front guide member 37A Front groove 38 Rear guide member 38A Rear groove 39 Support shaft (third support shaft)
40A Extension part 43 pin (first spindle)
48 Support shaft (second support shaft)
52 2nd plate 52A long hole 54 engagement member 55 1st plate 59 2nd rocking | swiveling part 60 connection member (1st connection member)
65 connecting member (second connecting member)
75 Third swinging part 76 interlocking mechanism

Claims (3)

A traveling device (2) having a pair of left and right crawlers is provided on the lower side of the machine body frame (1), and a reaping device (3) for cutting cereals is provided on the front side of the machine body frame (1). ) Is provided behind the control unit (5), and an operation lever (30) is provided at the front of the control unit (5) for turning the traveling device (2) and lifting and lowering the reaping device (3). In the combine
The operation mechanism operated by the operation lever (30) includes a fixed portion (31) fixed to the frame (26) side of the control portion (5), and a front-rear direction provided on the upper portion of the fixed portion (31). A first swinging portion (32) that swings in the left-right direction about the axis of the first support shaft (36, 43) extending to the first support shaft, and an upper portion of the first swinging portion (32). A second swinging portion (59) having an operation lever (30) swinging in the front-rear direction about the axis of the second support shaft (48) extending in the left-right direction, and the fixing portion (31) A third oscillating portion (75) having a first plate (55) that oscillates in the vertical direction about the axial center of the provided third support shaft (39) extending in the left-right direction;
One end of a first connecting member (60) for turning the traveling device (2) is attached to an extending portion (40A) extending in the left-right direction in the first swinging portion (32),
One end of a second connecting member (65) for raising and lowering the reaping device (3) is attached to the first plate (55) of the third swinging part (75),
The combine is provided with an interlocking mechanism (76) for swinging the third swinging part (75) in conjunction with swinging of the second swinging part (59). A second plate (52) that swings integrally with the operation lever (30) is provided on the second swinging portion (59),
The third swing part (75) includes an engagement member (54) that swings integrally with the first plate (55) about the axis of the third support shaft (39).
The interlocking mechanism (76) is configured by inserting the upper end of the engaging member (54) into a vertical hole (52A) formed in the lower part of the second plate (52).
Inside the fixed portion (31), a front guide member (37) having a front groove (37A) whose rear portion is opened and a rear guide member (38) having a rear groove (38A) whose front portion is opened are front and rear. Provided opposite to
In a state where the second swing part (59) is swung forward by the operation of the operation lever (30), the rear part of the second plate (52) enters the rear groove (38A), and the operation lever (30 ), The front portion of the second plate (52) enters the front groove (37A), and the first lever by the operation lever (30). The combine according to claim 1, wherein the swinging part (32) is restricted from swinging left and right.   The combine according to claim 2, wherein, in a plan view, the front groove (37A) is formed in a V shape with an open rear portion, and the rear groove (38A) is formed in a V shape with an open front portion.

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