JP2018183177A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a wide space above the floor surface of the floor of an operating unit in a combine.SOLUTION: An upper part of a pedal support arm (50) of a parking brake is fixed to a rotation shaft (60) supported by a vertical frame. A pedal (51) provided at a lower part of the pedal support arm (50) is disposed higher than the floor panel (34) of the floor (13) of an operating unit (5). A connection part (57) for operation linkage means for reaching the parking brake is provided at a front part of a rotation arm (55) fixed to the rotation shaft (60). An engaging unit (56) is provided at a rear part of the rotation arm (55). A first long hole (71) in which the rotation shaft (60) is fitted with play is formed in forward and backward directions in the front part of a checking member (70) that moves in conjunction with operation of a transmission lever (14A). A second long hole (72) in forward and backward directions, in which the engaging unit (56) is fitted with play, and a guide groove (73) for entry of the engaging unit (56) into the second long hole (72) are formed in the intermediate, in the forward and backward directions, of the checking member (70).SELECTED DRAWING: Figure 8

Description

  The present invention relates to a combine equipped with a parking brake pedal in a control section.

In a conventional combine, a technique is known in which a parking brake pedal for operating a parking brake of a transmission that drives a traveling device is provided on the left part of a floor of a control unit. (See Patent Document 1)
In addition, a front panel with steering levers and the like is provided at the front part of the control unit, a floor on which the operator gets on and off is provided between the front panel and the cockpit, and a shift lever and the like are arranged on the left side of the cockpit. A technique for providing a side panel is known. (See Patent Document 2)

JP 2006-115737 A JP 2010-263853 A

  However, in the technique of Patent Document 1, the lower part of the parking brake pedal is rotatably fixed to a support shaft extending in the left-right direction provided on the lower side of the floor plate of the floor. There is a risk that the space to be formed is narrow and the arrangement method of the hydraulic equipment is restricted. Moreover, since the parking brake pedal protrudes from the lower side to the upper side of the floor board, there is a drawback that the floor surface of the floor becomes narrow.

  In the technique of Patent Document 2, the upper frame that supports the front panel and the side panel of the control unit frame that forms the framework of the control unit is formed in a substantially inverted L shape in plan view, and the right end of the front portion of the upper frame is formed. The upper part of the upper frame is supported by a vertical frame that extends while curving upwards from the fuselage frame, and the rear left end of the upper frame is supported by a vertical frame that extends straight upward from the fuselage frame. The rear end is supported by a vertical frame that extends while curving from the fuselage frame to the upper right side, so the rigidity is low, and when a large force is applied to the steering lever etc., the upper frame and the vertical frame are deformed. There was a fear.

  Accordingly, a main object of the present invention is to provide a combine having a support structure for a parking brake pedal that can secure a wide space below and on the floor surface of a control section.

  The next problem is to provide a combine in which the rigidity of the control part frame forming the framework of the control part is increased.

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

  That is, the invention according to claim 1 is a parking brake for supporting a rotating shaft (60) on a vertical frame standing at a front portion of a control portion (5) and maintaining a traveling device (2) in a stopped state. The upper part of the pedal support arm (50) is fixed to the rotating shaft (60), and the pedal (51) provided at the lower part of the pedal support arm (50) is attached to the floor (13) of the control unit (5). It arrange | positions above a floor board (34), fixes the intermediate part of the front-back direction of a rotation arm (55) to the said rotating shaft (60), and reaches a parking brake to the front part of this rotation arm (55). A connecting part (57) for connecting the operation cooperation means is provided, and an engaging part (56) extending in the left-right direction is provided at the rear part of the rotating arm (55) to control the driving speed of the traveling device (2). Moves in the front-rear direction in conjunction with the speed change operation of the speed change lever (14A). A restraining member (70) is provided, and a first long hole (71) in the front-rear direction for loosely fitting the rotating shaft (60) is formed in a front portion of the restraining member (70), and the restraining member (70). In the middle part in the front-rear direction, the second elongated hole (72) in the front-rear direction for loosely fitting the engaging part (56), and the engaging part (56) enter the second elongated hole (72). The combine is formed with a guide groove (73).

  According to a second aspect of the present invention, the vertical frame is formed of left and right vertical frames (21, 22) provided upright and spaced apart in the left-right direction, and upper portions of the left and right vertical frames (21, 22) and The lower portions are connected by upper and lower horizontal frames (25, 26) spaced apart in the vertical direction, and the rotating shaft (60) is rotated between the left and right vertical frames (21, 22). The combine according to claim 1, which is movably supported.

  According to invention of Claim 1, a big space can be formed under the floor board (34) of a floor (13). Further, there is no projecting from the lower side to the upper side of the floor surface (34) of the floor (13), and a wide space can be secured on the floor surface (34) of the floor (13).

  Moreover, after returning the speed change lever (14A) to the neutral position and depressing the parking brake pedal (50) and holding the traveling device (2) in the stopped state, the speed change lever (14A) is operated to operate the reaping device and the threshing device. It is possible to efficiently perform the cutting operation at the heel by driving.

  According to the second aspect of the present invention, in order to achieve the effect of the first aspect of the invention, the upper and lower portions of the left and right vertical frames (21, 22) are arranged at intervals in the vertical direction. The upper and lower horizontal frames (25, 26) are connected, and the rotation shaft (60) is supported between the left and right vertical frames (21, 22).

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 perspective view of the frame which forms a control part frame. It is a front view of a body frame and a floor. It is a top view of a body frame and a floor. It is a left view of an airframe frame and a floor. It is a perspective view of a pedal support arm and a check member. It is a section front view explaining a pedal support arm and a check member. It is a section left side view explaining a rotation arm and a check member at the time of operation release. It is a cross-sectional left side view explaining the rotation arm and the check member during operation. It is a section right side view explaining a rotation arm and a check member. It is a section front view explaining a lever arm. It is a cross-sectional left side view explaining a lever arm.

  The present invention will be described below with reference to the drawings. For the sake of easy understanding, the description will be made with the front being the front side, the rear being the rear side, the right hand side being the right side, and the left hand side being the left side for the sake of convenience.

  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 below the body frame 1, and harvests grain cereal on the front side of the body frame 1. A mowing device 3 is provided. In addition, a threshing device 4 for threshing / selecting cereal grains harvested by the reaping device 3 is provided on the rear left side of the reaping device 3, and a control unit 5 on which a driver is boarded is provided on the rear right side of the reaping device 3. It has been.

  An engine room 6 on which the engine E is mounted is provided below the control unit 5, and a Glen tank 7 that stores grains threshed and sorted by the threshing device 4 is provided on the rear side of the control unit 5. The grain stored in the Glen tank 7 is discharged to the outside by a discharge auger (not shown) connected to the Glen tank 7.

  A front panel 11 on which a steering lever 11A and the like for operating the turning of the combine and the lifting and lowering of the reaping device 3 are disposed is provided at the front of the control unit 5, and the control seat 12 on which the operator is seated is provided at the rear. A floor 13 on which a driver gets on and off is provided at a lower portion between the front panel 11 and the cockpit 12. On the left side of the cockpit 12 is provided a side panel 14 on which a shift lever 14A for operating the traveling speed of the combine, a clutch operation lever 14B for operating a connected state of a threshing clutch, and the like are arranged.

  As shown in FIGS. 4 to 7, the fuselage frame 1 is formed by welding five fuselage front and rear frames 15 </ b> A to 15 </ b> E extending in the front-rear direction and five fuselage left and right frames 16 </ b> A to 16 </ b> E extending in the left-right direction. Is formed. A first front and rear frame (first front and rear frame) 15A and a second front and rear frame (second front and rear frame) 15B counting from the right side of the body frame 1 are counted from the front side of the body frame 1. The first body left and right frame 16A is formed to extend to the front side.

  The control unit frame 20 that forms the framework of the control unit 5 is a vertical frame (first vertical frame) 21 that is disposed in the front right side and extends in the vertical direction, and a vertical frame that is disposed in the front left part. A vertical frame (second vertical frame) 22, a vertical frame (third vertical frame) 23 arranged in the rear right part, and a vertical direction arranged in the rear left part. The vertical frame (fourth vertical frame) 24 is formed.

  The vertical frames 21 to 24 are formed to extend linearly in the vertical direction. As shown in FIG. The vertical frame 21 can also be formed so as to be inclined rearward.

  The lower part of the vertical frame 21 is fixed to the front end part of the aircraft front and rear frame 15A, and the lower part of the vertical frame 23 is fixed to a part of the front and rear frame 15A adjacent to the connecting part between the front and rear frame 15A and the left and right frame 16A. The lower part of the vertical frame 24 is fixed to a part of the front and rear frame 15B adjacent to the connecting part between the front and rear frame 15B and the left and right body frame 16A. In addition, the upper ends of the vertical frame 21, the vertical frame 23, and the vertical frame 24 are located at substantially the same height in the vertical direction when viewed from the front.

  The upper part of the vertical frame 21 and the upper part of the vertical frame 22 are connected by a horizontal frame (first horizontal frame) 25 arranged on the upper side and extending in the left-right direction, and the lower part of the vertical frame 21 and the lower part of the vertical frame 22 are They are connected by a horizontal frame (second horizontal frame) 26 arranged in the lower side and extending in the left-right direction. The horizontal frames 25 and 26 are formed to extend straight in the left-right direction. A front panel 11 is provided on the upper side of the horizontal frame 25 via a support member.

  The upper part of the vertical frame 23 and the upper part of the vertical frame 24 are connected by a horizontal frame 27 extending in the left-right direction. The horizontal frame (third horizontal frame) 27 is formed so as to extend linearly in the left-right direction.

  The left part of the horizontal frame 25 and the left part of the horizontal frame 27 are connected by a front / rear frame 28 extending in the front / rear direction. The front / rear frame 28 is formed to extend linearly in the front / rear direction. Further, the side panel 14 is provided above the front and rear frames 28 via a support member.

  Thereby, the rigidity of the control part frame 20 increases, and the deformation of the control part frame 20 can be prevented. Further, since the vertical frame 22 and the like are formed in a straight line, the assembling work of the control unit frame 20 can be easily performed.

  A plate frame 30 formed by bending and forming a sheet metal on which a floor plate 34 on which the operator gets on and off is provided. The plate frame 30 includes a front / rear plate frame (first front / rear plate frame) 31 disposed on the right side, a front / rear plate frame (second front / rear plate frame) 32 disposed on the left side, a front portion of the front / rear plate frame 31 and front / rear It is formed of left and right plate frames 33 that connect the front portions of the plate frames 32. The upper surfaces of the front and rear plate frames 31, the front and rear plate frames 32, and the left and right plate frames 33 are located at the same height in the vertical direction.

  The front / rear plate frame 31 is engaged with the lower part of the vertical frame 21 and the lower part of the vertical frame 23, and the front / rear plate frame 32 is located on the part of the horizontal frame 26 facing the vertical frame 22 and the lower part of the vertical frame 24 in front view. Is engaged. Thereby, in particular, the rigidity of the horizontal frame 26 is further increased, and deformation of the vertical frame 22 connected to the left portion of the horizontal frame 26 can be prevented.

  The left portion of the horizontal frame 27 extends to the left side beyond the vertical frame 24 to form a left extended portion 27A, and the vertical frame 22 is disposed on the left side of the vertical frame 24 in a front view. A left plate that separates the floor 13 and the outside is provided on the right surface of the vertical frame 22, the right surface of the front and rear frames 28, and the front surface of the vertical frame 24. Thereby, the left board of the floor 13 can be projected to the inside of the body (outside from the control unit 5) to form a wide space at the feet of the operator.

  When viewed from the front, the vertical frame 24 is disposed on the right side of the engine plate 42 provided on the left side of the crankshaft 41 of the engine E. Thereby, interference of the belt (illustration omitted) which transmits rotation of the vertical frame 25 and the crankshaft 41 to the threshing apparatus 4 can be prevented. Further, in the front view, the vertical frame 24 is disposed between the left and right directions of the front engine mount 43 that fixes the engine E to the airframe.

  On the rear side of the vertical frame 23, a radiator 45 that cools the cooling water circulating in the engine E disposed in the engine room 6 is disposed. The vertical frame 23 and the radiator 45 are connected by a connecting member (not shown). Thereby, the radiator 45 can be easily disposed on the right side of the engine room 6. A rear plate that partitions the floor 13 and the engine room 6 is provided on the front surface of the vertical frame 23, the front surface of the horizontal frame 27, and the front surface of the vertical frame 24.

  The rear portion of the front and rear frames 28 extends to the rear side beyond the lateral frame 27 to form a rear side extension portion 28A. The rear extension 28A is provided with a support shaft 35 extending in the left-right direction for rotatably supporting the lower portion of the clutch operation lever 14B. Thereby, it is not necessary to arrange another member for supporting the support shaft 35, and the number of parts can be reduced.

<Pedal support arm>
Next, the pedal support arm 50 of the parking brake pedal that operates the parking brake provided in the transmission and maintains the traveling device 2 in the stopped state will be described. As shown in FIGS. 8-12, the upper part of the pedal support arm 50 is being fixed to the left part of the rotating shaft 60 formed from the round pipe extended in the left-right direction. Thereby, a large space can be formed below the floor plate 34 in the floor 13.

  When viewed from the axial direction of the rotary shaft 60, the pedal support arm 50 is formed in a substantially reverse letter shape. A pedal 51 is provided below the pedal support arm 50 so that the operator steps on the pedal support arm 50 with his / her foot. The pedal 51 is formed of a plate having a predetermined width in the left-right direction, and is formed in a substantially U shape in a side view. As a result, the operator can easily depress the pedal 51.

  The upper part of the hook member 52 that engages with the lock member 36 provided at the front portion of the front and rear plate frame 32 is rotatably supported by the left and right support shafts 53 at a portion above the pedal 51 in the pedal support arm 50. To do. A torque spring (not shown) is interposed between the hook member 52 and the support shaft 53. As a result, the pedal 51 is stepped on and the pedal support arm 50 is rotated downward, so that the hook member 52 can be easily engaged with the lock member 36. Further, the pedal 51 can be stepped on again to easily disengage the hook member 52 and the lock member 36.

  A rotation arm 55 formed in a substantially U-shape in a side view is provided on the left side of the pedal support arm 50 on the rotation shaft 60. The central portion of the rotating arm 55 in the front-rear direction is fixed to the rotating shaft 60, and an engaging portion 56 extending to the left side is provided laterally at the rear of the rotating arm 55. A connecting portion 57 that extends toward the right side is provided on the side. A wire (not shown) for operating a parking brake in the transmission is connected to the connecting portion 57. Thereby, in conjunction with the depression operation of the pedal 51, the rotating shaft 60 and the rotating arm 55 can be rotated in the circumferential direction around the axis of the rotating shaft 60 to operate the parking brake in the transmission.

  Both side portions of the rotary shaft 60 are supported by a support member 61 formed in a substantially triangular shape extending in the front-rear direction fixed to a stay provided at an intermediate portion in the vertical direction of the front surface of the vertical frame 21, and the vertical frame 22. It is rotatably supported by a support member 62 formed in a substantially triangular shape extending in the front-rear direction and fixed to a stay provided at an intermediate portion in the vertical direction of the front surface.

<Checking member>
Next, the check member 70 connected to the rotary shaft 60 and the lever arm 80 provided below the speed change lever 14A will be described. As shown in FIGS. 8 to 12, a first long hole 71 having a long diameter in the front-rear direction in which the left part of the rotation shaft 60 is loosely inserted is formed in the front part of the check member 70, A second elongated hole 72 having a long diameter in the front-rear direction in which the left portion of the engaging portion 56 is loosely inserted is formed in the intermediate portion.

  A guide groove 73 that communicates with the central portion of the second long hole 72 in the front-rear direction is formed in the upper portion of the second long hole 72 in the check member 70. The front portion of the guide groove 73 is formed so as to be inclined downwardly from the upper end portion of the check member 70, and then straightly formed toward the lower second long hole 72. Is formed in a straight downward direction from the upper end portion of the first, toward the second elongated hole 72 on the lower side. Thereby, the position adjustment of the engaging part 56 of the rotation arm 55 and the second long hole 72 of the check member 70 is facilitated, and the assembly work of the rotation arm 55 and the check member 70 can be easily performed. Even if the shift lever 14 </ b> A is not completely returned to the neutral position, the engaging portion 56 can be smoothly guided into the guide groove 73 by the depression operation of the pedal 51.

  As shown in FIG. 10 and the like, the output rotation of the hydraulic continuously variable transmission 85 is stopped at the neutral position where the shift lever 14A is raised in a substantially vertical posture with respect to the side panel 14, and the traveling device 2 The drive of the apparatus 3 and the threshing apparatus 4 stops. The hydraulic continuously variable transmission 85 switches the output rotation of the engine E in the normal rotation or reverse rotation direction, and increases / decreases the output rotation speed of the engine E so that the transmission for driving the traveling device 2 and the cutting device 3 are driven. Is a device that drives

  When the shift lever 14A is operated to tilt forward, the output rotation of the hydraulic continuously variable transmission 85 increases in the forward direction, the travel device 2 is driven forward, the reaping device 3 is driven, and the shift lever 14A is moved backward. When operated to the side inclined posture, the output rotation of the hydraulic continuously variable transmission 85 is increased in the reverse direction, the traveling device 2 is driven backward, and the reaping device 3 is not driven.

  When the pedal 51 is depressed while the speed change lever 14 </ b> A is in the neutral position, the engaging portion 56 of the rotating arm 55 that rotates together with the pedal support arm 50 enters from the guide groove 73 and the second of the check member 70. The rotation arm 55 is allowed to rotate by being inserted into the elongated hole 72. Accordingly, the parking brake in the transmission is activated by the wire connection from the connection portion 57 of the rotating arm 55, and the stopped state of the traveling device 2 is maintained.

  On the other hand, when the shift lever 14 </ b> A is operated to be tilted forward, the check member 70 moves to the rear side, and the engaging portion 56 of the turning arm 55 that rotates together with the pedal support arm 50 guides the check member 70. The operation of stepping on the pedal support arm 50 is restrained by contacting the upper end of the front side of the groove 73. Similarly, in a state where the shift lever 14 </ b> A is operated to tilt rearward, the check member 70 moves to the front side, and the engaging portion 56 of the turning arm 55 that rotates together with the pedal support arm 50 moves the check member 70. The stepping operation of the pedal support arm 50 is restrained by coming into contact with the upper end portion on the rear side of the guide groove 73.

  Accordingly, when the shift lever 14A is inclined forward or rearward and the traveling device 2 is driven forward or backward, the pedal 51 cannot be depressed, and the operator It is possible to prevent erroneous operation.

  The lower portion of the transmission lever 14 </ b> A is fixed to the upper portion of the lever arm 80 via a connecting member 86. An operation rod 82 that rotates an operation shaft of the hydraulic continuously variable transmission 85 is provided at the rear portion of the lever arm 80.

  A central portion of the lever arm 80 is rotatably supported by a support shaft 88 extending in the left-right direction, and a connecting rod 83 extending in the front-rear direction is provided at the lower portion of the lever arm 80. An elastic member 84 such as a spring is externally fitted. The rear portion of the check member 70 is supported by the front portion of the connecting rod 83 so as to be movable in the front-rear direction.

  When the pedal 51 is stepped on while the transmission lever 14A is in the vicinity of the neutral position, the engaging portion 56 of the rotating arm 55 is inserted into the second elongated hole 72 of the check member 70 while being guided by the inclined edge of the guide groove 73. Fitted. At this time, by pushing the inclined edge of the guide groove 73 by the engaging portion 56, the check member 70 is forcibly moved back and forth, and the speed change lever 14 </ b> A is returned to the neutral position via the elastic member 84. As a result, after the driving of the traveling device 2 is stopped, the shift lever 14A can be operated to the front side inclination to drive the reaping device 3, and the harvesting operation of the culm can be performed efficiently. it can.

<Control lever>
Next, the operation lever 66 that rotates the rotating shaft 60 in the circumferential direction around the axis of the rotating shaft 60 will be described. As shown in FIGS. 8 to 12, the upper portion of the arm 63 extending in the vertical direction is fixed to the right end portion of the rotating shaft 60 that extends to the right side of the support member 61. A pin 64 extending in the left-right direction is fixed to the lower portion of the arm 63, and a roller 65 is rotatably supported on the right portion of the pin 64.

  A support boss 68 extending in the left-right direction is provided on the lower front surface of the vertical frame 21. When the support boss 68 is viewed in the axial direction, the operation lever 66 is formed to be bent in a substantially U shape, and the lower end portion of the operation lever 66 is rotatably supported by the support boss 68.

  When viewed in the axial direction of the support boss 68, a guide 67 formed in a substantially M shape extending toward the front side is provided on the front surface of the lower portion of the operation lever 66, and between the operation lever 66 and the guide 67. A roller 65 is fitted in the space.

  Thereby, the driver who gets off can operate the operation lever 66 to rotate the rotating shaft 60 and the rotating arm 55 in the circumferential direction to operate the parking brake in the transmission.

<Lever arm>
Next, the lever arm 80 that operates the hydraulic continuously variable transmission 85 according to the operation of the transmission lever 14A will be described. As shown in FIGS. 13 and 14, a friction plate 81 on which the slip portion 80 </ b> A of the lever arm 80 slides is arranged in parallel on the right side of the lever arm 80. The slip portion 80 </ b> A is formed in a circular shape at an intermediate portion in the front-rear direction of the lever arm 80, and protrudes toward the friction plate 81.

  In order to reduce the weight of the lever arm 80, it is preferable to integrally mold the lever arm 80 with resin. Further, when the lever arm 80 is integrally formed of resin, the friction plate 81 on which the slip portion 80A slides becomes unnecessary and can be removed, and the number of parts can be reduced.

  In this case, in order to secure a strength of a predetermined level or more, the length in the front-rear direction of the connecting portion 80B at the upper portion of the lever arm 80 to which the connecting member 86 provided at the lower portion of the transmission lever 14A is connected is set to the diameter of the slip portion 80A. It is preferable to form larger.

  Further, it is preferable to form a rib protruding toward the left side at the upper portion of the rear portion of the lever arm 80 where the support shaft 87 extending in the left-right direction is provided. As a result, the support shaft 86 can be securely fixed to the rear portion of the lever arm 80, and adhesion of dust or the like between the support shaft 86 and the operation rod 82 can be prevented.

2 Traveling device 5 Control unit 13 Floor 14A Shift lever 21 Vertical frame 22 Vertical frame 25 Horizontal frame 26 Horizontal frame 34 Floor plate 50 Pedal support arm 51 Pedal 55 Rotating arm 56 Engaging unit 57 Connecting unit 60 Rotating shaft 70 Checking member 71 First slot 72 Second slot 73 Guide groove

Claims (2)

  The upper part of the pedal support arm (50) of the parking brake that supports the rotating shaft (60) and maintains the traveling device (2) in a stopped state is supported on the vertical frame that is erected on the front part of the control unit (5). A pedal (51) fixed to the rotating shaft (60) and provided at the lower portion of the pedal support arm (50) is disposed above the floor plate (34) of the floor (13) in the control section (5). A connecting portion (57) for fixing an intermediate portion in the front-rear direction of the rotating arm (55) to the rotating shaft (60) and connecting an operation cooperation means leading to the parking brake to the front portion of the rotating arm (55). ) And an engaging portion (56) extending in the left-right direction is provided at the rear portion of the rotating arm (55), and the speed change of the speed change lever (14A) for speed changing the driving speed of the travel device (2). A check member (70) that moves in the front-rear direction in conjunction with the operation is provided. A first long hole (71) in the front-rear direction for loosely fitting the rotating shaft (60) is formed in the front part of the member (70), and the intermediate part in the front-rear direction of the restraining member (70) The combine which formed the 2nd long hole (72) of the front-back direction which loosely fits an engaging part (56), and the guide groove (73) which penetrates the said engaging part (56) into a 2nd long hole (72).   The vertical frame is formed of left and right vertical frames (21, 22) standing up and down in the left-right direction, and the upper and lower portions of the left and right vertical frames (21, 22) are vertically The upper and lower horizontal frames (25, 26) arranged at intervals are connected, and the rotating shaft (60) is rotatably supported between the left and right vertical frames (21, 22). Combine as described in.

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