JP2001016925A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter having a simplified brake structure for stopping a machine body at the time of a seedling-loading operation. SOLUTION: This rice transplanter obtained by synchronously connecting a prime motor part to a traveling part through a crutch structure and a brake structure, further synchronously connecting the crutch structure to the brake structure through a crutch-brake synchronous structure, and enabling the posture to be changed between a machine body-traveling posture for making the crutch structure in the on-state and making the brake structure in the released state, and a machine body-stopping posture for making the crutch structure in the on-state and the brake structure in the operated-state, and a machine body- traveling posture for making the crutch structure in the off-state and making the brake structure in an released state, has a synchronously operating lever constituted so that when the posture is changed from the machine body-traveling posture to the machine body-stopping posture, the crutch structure may be operated to the off-state, and thereafter the brake structure may become the operated-state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a rice transplanter.

[0002]

2. Description of the Related Art In a conventional rice transplanter, a planting machine is disposed at the rear of a self-propelled traveling body so as to be able to move up and down.
A traveling unit consisting of front and rear wheels and an interlocking mechanism etc. is arranged at the lower part of the body frame, while a motor unit consisting of an engine and a transmission is arranged at the front part of the body frame, and the traveling unit is equipped with a clutch mechanism at the motor unit. The clutch mechanism and the brake mechanism are linked to each other via a clutch-brake link mechanism.

In the clutch-brake interlocking mechanism, the clutch mechanism is connected and the brake mechanism is released, and the traveling body is driven to perform a normal planting operation, and the clutch mechanism is disconnected. When the seedling operation is performed by stopping the running machine with the brake mechanism activated and the running machine stopped, or when crossing ridges or loading / unloading on a truck, the machine is stopped by the operator's intention There was an interlocking operation lever configured to be able to change the attitude to the aircraft stopped attitude.

[0004] At the time of running or planting work, the interlocking operation lever is set to the body running posture, and the body is run. At the time of loading / unloading, the interlocking operation lever was changed to the aircraft stop posture to stop the aircraft.

In such a conventional rice transplanter, a transmission case is connected to the engine, a front and rear axle case is connected to the transmission case, and a pair of left and right wheels are connected to each axle case. A clutch mechanism and a brake mechanism are interposed between the transmission case and the transmission case, respectively.

[0006]

However, in the conventional rice transplanter described above, a brake mechanism is provided between the engine and the transmission case, that is, the brake is provided upstream of the transmission case in the power transmission path. Because the mechanism was provided, when the transmission case was in the neutral state, the rotation of the front and rear wheels could not be stopped even if the brake mechanism was operating, and the aircraft was securely I couldn't stop it.

[0007]

Therefore, in the present invention, a driving unit is interlockedly connected to a prime mover via a clutch mechanism and a brake mechanism, and the clutch mechanism and the brake mechanism are interlocked via a clutch-brake interlocking mechanism. The clutch-brake interlocking mechanism is provided with an interlocking operation lever, and the interlocking operation lever sets the clutch mechanism in a connected state, and releases the brake mechanism in an airframe running posture, and sets the clutch mechanism in a disconnected state, In addition, in rice transplanters that are configured to be able to change the attitude to the body stop attitude that puts the brake mechanism into operation, when the attitude of the interlocking operation lever changes from the aircraft travel attitude to the aircraft stop attitude, the clutch mechanism becomes disconnected. Then, the brake mechanism is configured to be in the operating state.

[0008] Further, the running unit is interlockedly connected to the prime mover unit via a clutch mechanism and a brake mechanism, and the clutch mechanism and the brake mechanism are interlockedly connected via a clutch-brake interlocking mechanism. An interlocking operation lever is provided. The interlocking operation lever is configured to connect the clutch mechanism and release the brake mechanism. The body running posture, and the airframe that sets the clutch mechanism to the disengaged state and activates the brake mechanism. In a rice transplanter that can be changed to the stop posture, the interlocking operation lever is configured so that when the posture changes from the aircraft stop posture to the aircraft running posture, the brake mechanism is released, and then the clutch mechanism is connected. It was decided to.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a rice transplanter according to the present invention, a traveling unit is operatively connected to a prime mover via a clutch mechanism and a brake mechanism, and the clutch mechanism and the brake mechanism are interlocked via a clutch-brake interlocking mechanism. The clutch-brake interlocking mechanism is provided with an interlocking operation lever, and the interlocking operation lever sets the clutch mechanism in a connected state, and releases the brake mechanism in an airframe running posture, and sets the clutch mechanism in a disconnected state, In addition, the attitude can be changed to a body stop attitude in which the brake mechanism is operated.

Further, when the attitude of the interlocking operation lever is changed from the body running attitude to the aircraft stopped attitude, the clutch mechanism is disengaged, and thereafter the brake mechanism is operated.

Therefore, the brake mechanism operates with the power from the engine cut off, so that the braking torque of the brake mechanism can be reduced and the structure of the brake mechanism can be simplified. is there.

In addition, the operator can operate the clutch mechanism and the brake mechanism only by operating the interlocking operation lever once, thereby improving the operability.

Further, even if the clutch mechanism is damaged, the body can be reliably stopped by the brake mechanism, and safety can be improved.

Further, when the attitude of the interlocking operation lever is changed from the aircraft stopped attitude to the aircraft running attitude, the brake mechanism is released, and then the clutch mechanism is brought into the connected state, whereby the aircraft is suddenly started. In addition, the engine stall can be prevented from occurring.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a riding rice transplanter 1 according to the present invention has a planting machine 3 connected via a lifting mechanism 4 to a rear part of a traveling body 2 which is configured to be self-propelled. I have.

As shown in FIG. 1, the traveling body 2 has a traveling section 6 disposed below the body frame 5 and a motor section 7 disposed above the front side of the body frame 5. The driving operation unit 8 is disposed at the rear position.

As shown in FIGS. 1 and 12, the body frame 5 includes a pair of left and right main pipes 9, 10 extending in the front-rear direction and having a rectangular cross section, and a front end between the main pipes 9, 10. A main frame structure 11 having a U-shape in plan view is formed from a front pipe (not shown) having a rectangular section in cross-section, and is connected to an intermediate portion of the left and right main pipes 9 and 10 of the main frame structure 11. The rods 12, 13 are attached downward, respectively, and a pair of left and right cylindrical sub pipes 14, 15 and 1
A lower frame member 17 composed of a cylindrical connecting pipe 16 erected between the intermediate portions 4 and 15 is continuously provided. In the figure, 18
Is a connecting pipe having a rectangular cross section.

The body frame 5 is attached to the rear ends of the sub-pipes 14 and 15 between the rear end of the lower frame member 17 and the rear end of the main frame member 11 so as to be inclined forward and upward. A rear frame structure 21 on the rear view portal type comprising a pair of left and right cylindrical rear pipes 19, 19 and a cylindrical upper pipe 20 erected between the upper ends of the rear pipes 19, 19.
Further, between the rear frame component 21 and the lower frame component 17, the middle part of the upper pipe 20 and the middle part of the connection pipe 16 are connected in an inclined manner with a low front and rear high. An upper frame structure 23 composed of a pair of left and right inclined pipes 22 is continuously provided.

As shown in FIG. 1, the prime mover unit 7 has a flat engine mounting table (not shown) between the left and right main pipes 9 and 10 of the body frame 5 and is mounted above the engine mounting table. While the engine 25 as a prime mover is mounted, a transmission case as a transmission mechanism is located below the engine mounting base.
The engine 25 and the transmission case 26 are interlocked to each other via a two-stage high and low belt type speed change mechanism 27.
The planting machine 3 is operatively connected to the engine 25 via a planting interlocking mechanism 28.

The engine unit 7 transmits the power of the engine 25 to the transmission case 26 and the planting machine 3.

The motor unit 7 has a fuel tank (not shown) disposed directly above the engine 25 and covers the fuel tank and the engine 25 with a bonnet 29. Spare seedling stands 30, 30 for placing spare seedlings at side positions are provided.

As shown in FIG. 1, the bonnet 29 is mounted on the front upper portion of the main frame structure 11 of the body frame 5 and includes a front cover body 31 and a rear cover body 32.

As shown in FIGS. 1, 10 and 11, the spare seedling support 30 is provided with a spare seedling support bracket 33 attached to the front end of the main frame structure 11 of the body frame 5. A spare seedling support rod 34 extended in the vertical direction is attached to 33, and spare seedling support 35, 36 extended in the front-rear direction is attached to the tip and the middle of the spare seedling support rod 34. A seedling tray containing a plurality of seedlings can be placed on top of the spare seedling stand supports 35, 36.

The high-low two-stage belt type speed change mechanism 27 is shown in FIGS.
As shown in FIG. 3, a large-diameter high-speed output pulley 38 and a small-diameter low-speed output pulley 39 are mounted side by side on the output shaft 37 of the engine 25, while a small-diameter high-speed input pulley 41 is mounted on the input shaft 40 of the transmission case 26. And large diameter low speed input pulley 42
And high-speed output pulley 38 on the right.
The high-speed transmission belt 43 is suspended between the low-speed output pulley 39 and the low-speed input pulley 42, and the low-speed transmission belt 44 is suspended between the low-speed output pulley 39 on the left and the high-speed transmission belt 43. A high-speed side clutch pulley 45 is disposed so as to be able to be connected to and separated from the low-speed side transmission belt 44, and a low-speed side clutch pulley 46 is disposed so as to be able to be connected to and separated from the low-speed side transmission belt.

By selectively pulling either the high-speed transmission belt 43 or the low-speed transmission belt 44 by either the high-speed clutch pulley 45 or the low-speed clutch pulley 46, the transmission case
The 26 input shafts are rotated at high or low speed so that the running speed can be increased or decreased.

That is, the hydraulic motor support bracket 48 is mounted on the left side wall 47 of the engine 25, and the clutch support shaft support bracket 49 is mounted on the front upper portion of the left main pipe 9 of the body frame 5. A clutch support shaft 50 is rotatably mounted between the hydraulic motor support bracket 48 and the hydraulic motor support bracket 48 such that the axis of the clutch support shaft 50 extends in the left-right width direction. In the drawing, 51 and 52 are bosses for supporting the clutch shaft.

A low-speed clutch arm 53 extending downward is attached to the outer peripheral surface of the right side of the clutch support shaft 50, and the low-speed clutch pulley 46 is rotatable at the lower end of the low-speed clutch arm 53. On the other hand, a low-speed arm mounting boss 54 is fixed to the left side of the clutch support shaft 50, and the low-speed wire arm 55 extends vertically on the outer peripheral surface of the low-speed arm mounting boss 54. And attach the low-speed clutch wire 56 to the upper end of the low-speed wire arm 55.
And the low-speed wire arm
A biasing spring 57 is provided between the lower end of 55 and the main pipe 9.
The low-speed side clutch pulley 46 is urged in a direction approaching the low-speed side transmission belt 44 by the action of the urging spring 57. In the figure, 58 is a clutch pulley support shaft,
Reference numeral 59 denotes a spring support mounted on the front upper portion of the main pipe 9, reference numeral 60 denotes a wire connecting pin, and reference numeral 61 denotes a spring connecting pin.

When the low speed side clutch wire 56 is pulled against the urging spring 57, the low speed side wire arm 55, the clutch support shaft 50, and the low speed side clutch arm 53 are integrated clockwise in FIG. The low-speed side clutch pulley 46 rotates and separates from the low-speed side power transmission belt 44, and accordingly, the low-speed side power transmission belt 44 relaxes and moves from the low-speed side output pulley 39 of the engine 25 to the low-speed side input pulley 42 of the transmission case 26. Power transmission is cut off.

On the other hand, when the low-speed side clutch wire 56 is relaxed, the low-speed side wire arm 55, the clutch support shaft 50 and the low-speed side clutch arm 53 are integrated counterclockwise in FIG. , The low-speed clutch pulley 46 approaches the low-speed transmission belt 44, and accordingly, the low-speed transmission belt 44 is pulled, and the low-speed output pulley 39 of the engine 25 is moved from the transmission case 26 to the transmission case 26.
Power is transmitted to the low-speed side input pulley 42.

A high-speed arm mounting boss 62 is rotatably and loosely fitted in the middle of the clutch support shaft 50, and extends vertically in the high-speed arm mounting boss 62. Attach the clutch arm 63, the same high-speed clutch arm 63
The lower end of the high-speed clutch pulley 45 is rotatably supported at the lower end, while the upper end of the high-speed clutch arm 63 is operatively connected to the distal end of the high-speed clutch wire 64. An urging spring 65 is provided between the middle part and the main pipe 9, and urges the high-speed clutch pulley 45 in a direction approaching the high-speed transmission belt 43 by the action of the urging spring 65. In the figure, 66 is a clutch pulley support shaft, 67 is a wire connection pin, and 68 is a spring connection pin.

When the high-speed clutch wire 64 is pulled against the urging spring 65, the high-speed clutch arm 63 integrally rotates clockwise in FIG. 2, and the high-speed clutch pulley 46 is driven by the high-speed transmission. As a result, the high-speed power transmission belt 43 is relaxed, and the high-speed output pulley 38 of the engine 25 is moved away from the transmission case 26.
The transmission of power to the high-speed side input pulley 41 is cut off.

On the other hand, when the high-speed side clutch wire 64 is relaxed, the high-speed side clutch arm 63 is integrally rotated counterclockwise in FIG. Transmission belt 43
Accordingly, the high-speed transmission belt 43 is pulled, and power is transmitted from the high-speed output pulley 38 of the engine 25 to the high-speed input pulley 41 of the transmission case 26.

In the drawing, reference numeral 69 denotes a hydraulic motor, 70 denotes an output pulley for driving a hydraulic motor mounted on an output shaft 37 of the engine 25, 71 denotes an input pulley for driving a hydraulic motor mounted on an input shaft 72 of the hydraulic motor, 73 Is a transmission belt suspended between input / output pulleys 70 and 71 for driving the hydraulic motor.

As shown in FIG. 1, the traveling section 6 includes a pair of left and right front axle cases 74, 75 on the transmission case 26.
The front axle cases 74 and 75 are linked to the front wheels 76, and the transmission case 26 is linked to the rear axle case 77. The left and right rear wheels 78 are linked to the rear axle case 77. , 78 are linked.

In this manner, the power of the engine 25 is transmitted from the engine 25 to the transmission case 26, and transmitted from the transmission case 26 to the front axle cases 74 and 75.
The transmission from the front axle case 75 to the front wheels 76, 76, the transmission from the transmission case 26 to the rear axle case 77, and the transmission from the rear axle case 77 to the rear wheels
A power transmission path 79 for transmitting to the power transmission 78,78 is formed.

As shown in FIGS. 1 and 7, the front axle cases 74 and 75
The horizontal axle case components 82 and 83 connected to 0,81 in a state of being extended in the left-right width direction, and the vertical axle case component suspended at the tip of the horizontal axle case components 82,83 The front axles 86, 86 are arranged at the lower ends of the vertical accelerator case members 84, 85 so as to be rotatable toward the left and right sides of the fuselage. The front wheel 76 is mounted on the front axle 86.

The vertical axle case members 84 and 85 are rotatably connected to the leading ends of the horizontal axle case members 82 and 83 and are connected to a steering wheel described later.
The steering wheel 87 is connected to the steering wheel 87 via a steering mechanism 88 so as to be steerable.

As shown in FIGS. 1, 7, and 8, the steering mechanism 88 extends a base end of a steering shaft 89 having a steering wheel 87 attached to a distal end thereof on an upper portion of the transmission case 26 in an upward direction. In a state where it can rotate freely,
The base end of the steering yoke shaft 90 is rotatably attached to the base end of the steering shaft 89 while extending downward from the lower rear end of the transmission case 26. A steering yoke 91 having a triangular flat plate shape is attached to the distal end of the steering yoke 90 in a horizontal state. Knuckle arms 94 and 9 at the tip of tie rods 92 and 93
The base end of the knuckle arm 94, 95 is connected to the base end of the knuckle arm 94, 95, and the vertical axle case components 84, 85
The middle part of is installed. In the figure, reference numeral 96 denotes a hydraulic cylinder for power steering provided between the steering yoke 91 and the body frame 5, 97 denotes a connection arm, and 98 denotes a cylinder stay attached to the body frame 5.

When the steering mechanism 88 steers the steering wheel 87 left and right, the left and right vertical axle case members 84 and 85 and the front wheels 76 and 76 change their posture to the left and right. Like that.

The rear axle case 77 is supported at the intersection of the rear end of the lower frame member 17 and the lower end of the rear frame member 21, and extends toward the front of the rear axle case 77 in the front-rear direction. The drive shaft 99 is operatively connected to the transmission case 26, while the rear axle case 77 is operatively connected to the rear wheels 78, 78 on the left and right sides of the rear axle case 77 via an axle 100 extending in the left-right width direction.

The driving operation unit 8 has a steering wheel 87 rotatably disposed on the top of the hood 29, a seat 101 disposed at a position immediately behind the steering wheel 87, and a left side position of the seat 101. A shift lever 102 for shifting the traveling machine body 2 is provided so as to be swingable in the front-rear direction, while a seat for moving the planting machine 3 up and down is provided on the right side of the seat 101. The raising / lowering lever 103 is disposed so as to be swingable in the front-rear direction, and furthermore, the speed change lever 102 and the planting raising / lowering lever 103 are interlockingly connected via a lever interlocking mechanism 167. In the figure, reference numeral 105 denotes a casing body.

The driving operation unit 8 is provided at a position on the left side of the hood 29 with a clutch-brake interlocking mechanism 106 to be described later.
An interlocking operation lever 107 provided as an interlocking operation member is provided so as to be swingable in the front-rear direction, and a clutch pedal 108 is disposed at a position on the left side of the interlocking operation lever 107 so as to be operated. . Note that a foot-type brake pedal 220 is disposed so as to be operable at the right side of the hood 29.

An interlocking operation lever 107 is provided on a clutch-brake interlocking mechanism 106. The clutch-brake interlocking mechanism 106 includes a clutch mechanism 109 and a brake mechanism 110 interposed between the prime mover unit 7 and the traveling unit 6. Are linked in an interlocking manner. The clutch mechanism 109 is provided with an interlocking shaft 111 mounted on the connecting rod 12 on the left side of the body frame 5 so as to be rotatable back and forth with the axis line extending in the left-right width direction. The base plates of the interlocking operation lever 107 are mounted on the right operating plate 113 so as to be swingable in the left and right width directions, while the left operating plate is mounted on the right operating plate 113.
An urging spring 115 is interposed between the connecting rod 112 and the connecting rod 12 to urge the interlocking operation lever 107 forward.
In the figure, 114 is an urging spring, 124 is a connecting pin, and 125 is a pressing plate.

The clutch mechanism 109 has a clutch pedal shaft 116 mounted on the main pipe 9 on the left side of the body frame 5 so as to be rotatable back and forth with the axis line extending in the left-right direction, and a clutch is provided on the left end of the clutch pedal shaft 116. A pair of left and right interlocking plates 117, 118 extending in the form of a front-rear, low-rear, and high-inclination are mounted on the right end of the clutch pedal shaft 116 while the base end of the pedal 108 is mounted.
At the lower end of the interlocking plates 117, 118, the base end of a clutch rod 119 extending in the front-rear direction extending between the left and right operating plates 112, 113 is rotatably mounted. A low-speed side engaging pin 121 projecting rightward at the upper right side of the low-speed side wire arm 55; and a high-speed side clutch arm. A high-speed side engaging pin 122 protruding leftward is engaged with the upper left side of 63. In the figure, 156 is a planting interlocking wire interlockingly connected to the upper end of the left interlocking plate 117, 139 is an urging spring interposed between the clutch pedal 108 and the main pipe 9,
The biasing spring 139 biases the clutch pedal 108 clockwise about the clutch pedal shaft 116 in FIG.

Further, the clutch mechanism 109 is located at the rear of the clutch rod 119 and has left and right operating plates 112 and 113.
The receiver 123 is attached to the position immediately after the.

Then, when the clutch pedal 108 is depressed, the interlocking plates 117 and 118 rotate counterclockwise in FIG. 2 around the clutch pedal shaft 116, and the clutch rod 119 moves rearward. 2, the low-speed side wire arm 55 and the high-speed side clutch arm 63 rotate clockwise in FIG. 2 around the clutch support shaft 50, and the high-speed side clutch pulley 45 and the low-speed side clutch pulley 46 respectively transmit the high-speed side transmission. The clutch mechanism 109 is disengaged from the belt 43 and the low-speed side transmission belt 44 so that the transmission of power from the engine 25 to the transmission case 26 is cut off.

Also, when the interlocking operation lever 107 is operated rearward, the operating plates 112 and 113 rotate clockwise in FIG. 2 around the interlocking shaft 111, and the distal end portions of the operating plates 112 and 113 are received. The body 123 is pressed rearward, and the clutch rod 119 moves rearward accordingly, and the clutch mechanism 109 is disengaged in the same manner as described above, and the power from the engine 25 to the transmission case 26 is transmitted. Transmission is cut off.

On the other hand, when the interlocking operation lever 107 is operated forward, the operating plates 112 and 113 rotate counterclockwise in FIG. 2 around the interlocking shaft 111, and the distal ends of the operating plates 112 and 113 When the clutch rod 119 moves forward, the high-speed side wire arm 55 or the low-speed side clutch arm 63 rotates counterclockwise about the clutch support shaft 50 in FIG. The side clutch pulley 45 or the low speed side clutch pulley 46 approaches the high speed side transmission belt 43 or the low speed side transmission belt 44, and the clutch mechanism 109 is connected, so that power is transmitted from the engine 25 to the transmission case 26. I have to.

In the brake mechanism 110, a base end of a brake connector 126 is attached to the right end of the interlocking shaft 111, and a support 127 is attached to a distal end of the brake connector 126.
The base end of the connecting rod 128 is screwed to the upper and lower positions so as to be adjustable.

Further, the brake mechanism 110 is provided at the front end of the left sub-pipe 14 with an
9,130 projecting to the right, and supporting brackets 129,
A brake actuating shaft 131 is mounted between the distal end of the brake actuating shaft 131 so as to be able to rotate left and right with the axis extending in the front-rear direction. The tip of the connecting rod 128 is linked to the tip of the link 132, while the operating body 221 is projected forward from the rear of the brake operating shaft 131, and is supported by the tip of the operating body 221. Bosses 133 are connected in series, and brake bodies 13
4 is attached so that it can move forward and backward, and a brake pad 135 is attached to the tip of the brake body 134.
However, it is configured to be able to freely contact and separate from a brake groove 137 formed on an outer peripheral surface of a brake pulley 136 attached to a front portion of the drive shaft 99. In the drawing, reference numeral 138 denotes a biasing spring.

As shown in FIG. 9, the drive shaft 99 has a transmission case side shaft 147 interlockingly connected to the rear of the transmission case 26, an axle case side shaft 148 interlockingly connected to the front of the rear axle case 77, and both shafts. Connection shaft 149 interlocked between 147 and 148
The brake pulley 136 of the brake mechanism 110 is disposed on the outer peripheral surface of the transmission case side shaft 147 and near the connection between the transmission case side shaft 147 and the connection shaft 149. Installed. In the figure, 150 and 151 are bevel gears.

As described above, in the present embodiment, the brake mechanism 11 is installed inside the transmission case 26 and the rear axle case 77.
Because the brake mechanism 110 is provided on the drive shaft 99 that is exposed to the outside without disposing
The inspection and repair of the brake mechanism 110 can be performed without removing or disassembling the 26 or the rear axle case 77, and the maintenance work of the brake mechanism 110 can be facilitated.

Further, since the drive shaft 99 is divided and the brake mechanism 110 is provided in the vicinity of the connection portion, the brake mechanism 110 can be removed without removing the drive shaft 99 from the transmission case 26 or the rear axle case 77. Can be inspected and repaired, and the brake mechanism 11
0 maintenance work can be further facilitated.

Further, in this embodiment, the transmission case 26 is arranged at a position higher than the rear axle case 77, the drive shaft 99 is inclined forward and backward, and the brake mechanism 110 is provided on the upper side thereof. Therefore, brake mechanism 11
0 can be provided as high as possible, so that mud or soil can be prevented from adhering to the brake mechanism 110, and the braking force of the brake mechanism 110 can be maintained well.

The brake mechanism 110 includes a brake pulley
A mud removing mechanism 152 for removing mud and soil adhering to the outer peripheral surface of the 136 is provided.

As shown in FIGS. 2 and 5, the mud removing mechanism 152 pivots a support 153 for supporting the scraper in the middle of the rear support bracket 130 for supporting the brake operating shaft 131. The scraper 15 is made of an elastic material such as resin or rubber and is supported at the tip of the support 153.
4 is rotatably supported, and the scraper 154 is pressed against the outer peripheral surface of the brake pulley 136 by an urging spring 155 interposed between the sub pipe 14 and the support 153.

The scraper 154 is disposed at the lower left position of the brake pad 135 when viewed from the rear. Thereby, the rotation direction of the drive shaft 99 when the fuselage advances, that is,
In FIG. 5, the scraper 154 and the brake pad 135 are sequentially arranged clockwise.

As described above, in this embodiment, since the mud removing mechanism 152 for removing the mud adhering to the outer peripheral surface of the brake pulley 136 is provided, the mud removing mechanism 152 attaches the mud to the outer peripheral surface of the brake pulley 136. Mud and dirt can be removed, and the friction force between the brake pulley 136 and the brake pad 135 can be favorably maintained.
The braking force of the brake mechanism 152 can be well maintained.

Further, no mud or soil is caught between the brake pulley 136 and the brake pad 135,
The breakage of the brake pulley 136 and the brake pad 135 can be prevented.

Further, since the mud removing mechanism 152 is constituted by rotatably providing the scraper 154 on the support 153, the frictional resistance between the scraper 154 and the brake pulley 136 can be reduced, and the scraper 154 can be used. Power loss caused by contact with the brake pulley 136 can be reduced.

Further, the wear of the outer peripheral surface of the scraper 154 can be reduced, and the life of the scraper 154 can be extended.

Further, since the scraper 154 made of an elastic material such as resin or rubber is pressed against the outer peripheral surface of the brake pulley 136, the scraper 154 can be brought into close contact with the outer peripheral surface of the brake pulley 136.
The mud and soil adhering to the outer peripheral surface of the 136 can be reliably removed.

Further, the scraper 154 and the brake pad 135 are turned in the direction of rotation of the drive shaft 99 when the body advances.
Are arranged in order, the mud and soil are removed from the outer peripheral surface of the brake pulley 136 by the scraper 154, and then the brake pad 135 comes into contact with the outer peripheral surface of the brake pulley 136. Mud and dirt are not trapped between them, and the braking force of the brake mechanism 110 can be maintained satisfactorily, and breakage of the brake mechanism 110 such as the brake pad 135 and the brake pulley 136 can be prevented. .

The brake mechanism 110 is constructed as described above. When the interlocking operation lever 107 is operated rearward, the brake connecting member 126 is moved around the interlocking shaft 111 as shown in FIG.
Pivots clockwise at
134 rotates counterclockwise in FIG. 6 around the brake operating shaft 131, and the brake pad 135
Pressing 7 activates the brake mechanism 110,
The rotation of the drive shaft 99 is stopped so that the machine body can be stopped.

At this time, before the brake pad 135 presses the brake groove 137 and the brake mechanism 110 operates, the distal ends of the operating plates 112 and 113 press the receiver 123 backward, and the clutch rod 119 moves backward. And the clutch mechanism 109 is brought into a disconnected state.

On the other hand, when the interlocking operation lever 107 is operated forward, the brake connecting member 126 rotates counterclockwise in FIG. 2 around the interlocking shaft 111, and accordingly,
The brake body 134 is moved around the brake operating shaft 131 in FIG.
When the brake pad 135 separates from the brake groove 137, the brake mechanism 110 is released, and the drive shaft 99 rotates to allow the body to travel.

At this time, after the brake pad 135 is separated from the brake groove 137 and the brake mechanism 110 is released, the distal ends of the operating plates 112 and 113 are separated from the receiver 123 and the clutch mechanism 109 is connected. I am trying to be.

As described above, the interlocking operation lever 107 brings the clutch mechanism 109 into the connected state, and the brake mechanism 110
Release posture (140) and clutch mechanism
The posture can be changed to a body stop posture (141) in which the 109 is in the cut state and the brake mechanism 110 is in the operative state.

The interlocking operation lever 107 is inserted into an L-shaped guide hole 143 formed in a guide plate 142 attached to the left main pipe 9, and the body running posture (140 ) And the aircraft's stopping attitude (141). In the figure, reference numeral 144 denotes a bracket.

In other words, when changing the attitude of the interlocking operation lever 107 from the airframe running attitude (140) to the airframe stopping attitude (141), the interlocking operation lever 107 is turned rightward after turning the interlocking operation lever 107 rightward. The swing operation is performed so that the interlocking operation lever 107 is held in the airframe stop posture (141) in a state where the interlocking operation lever 107 is stood upright upward. In addition, guide hole
The middle portion of the interlocking operation lever 107 is locked by the locking projection 145 of 143 so that the interlocking operation lever 107 does not swing leftward.

On the other hand, when the interlocking operation lever 107 is
When changing the attitude from (141) to the aircraft running attitude (140), rotate the interlocking operation lever 107 once to the rear, swing it to the left, and then turn it forward. By performing the moving operation, the interlocking operation lever 107 is held in the body running posture (140) in a state of being inclined to the upper left.

Further, as shown in FIGS. 10 and 11, the interlocking operation lever 107 is located within the left and right widths W of the hood 29 in front of the hood 29 in the body stop posture (141) and at a position higher than the rear end of the steering wheel 87. While being on the front side,
In the body running posture (140), the vehicle is positioned outside the left and right widths W of the hood 29 in a front view. In the figure, 146 is a step.

As described above, in this embodiment, the hood 29
The interlocking operation lever 107 is arranged at the side position of
Since the interlocking operation lever 107 is positioned within the left and right width W of the bonnet 29 when viewed from the front in the body stop posture (141), the interlocking operation lever 107 is set to the body stop posture (141), When the operator puts his feet on step 146 and takes out the spare seedlings from the spare seedling stand 30 during the seedling splicing work of setting up the seedlings in Step 3, the interlocking operation lever 107 may accidentally come into contact with the body of the worker. The seedling connection work can be performed smoothly.

Further, the posture of the interlocking operation lever 107 does not change against the intention of the operator, and the safety of the operation can be improved.

In this embodiment, the interlocking operation lever 107
In the body stop posture (141), the vehicle is positioned forward of the rear end of the steering wheel 87 disposed on the top of the hood 29 in side view.

For this reason, the body of the worker is
Since the steering wheel 87 contacts the steering wheel 87 before the contact with the steering wheel 107, the interlocking operation lever 107 does not change its posture against the intention of the operator, thereby improving the work safety.

Further, in this embodiment, the interlocking operation lever 10
7 is changed from the aircraft running attitude (140) to the aircraft stopping attitude (141), the clutch mechanism 109 is turned off, and then the brake mechanism 110 is turned on. The brake mechanism 110 operates with the power cut off, and the brake mechanism 11
0 braking torque can be reduced, and the braking mechanism 11
The structure of 0 can be simplified.

Further, the operator operates the interlocking operation lever 107 by one.
Just rotate the clutch mechanism 109 and brake mechanism 11
0 can be operated, and operability can be improved.

On the other hand, when the interlocking operation lever 107 is
When the attitude is changed from (141) to the aircraft running attitude (140), the brake mechanism 110 is released and then the clutch mechanism 109 is activated, so that the aircraft may suddenly start. And stall of the engine can be prevented.

The brake mechanism 110 is provided on the power transmission path 79 for transmitting the power of the engine 25 from the engine 25 to the rear wheels 78, 78, downstream of the transmission case 26,
Moreover, it is provided upstream of the rear axle case 77.

Conventionally, a brake mechanism 110 is provided between the engine 25 and the transmission case 26, that is,
Since the brake mechanism 110 is provided on the power transmission path 79 on the upstream side of the transmission case 26, when the transmission mechanism in the transmission case 26 is in a neutral state, the front and rear wheels 76 are operated even if the brake mechanism 110 is operating. , 76, 78, 78 could not be stopped, and the aircraft could not be reliably stopped on slopes such as slopes.
In this embodiment, since the brake mechanism 110 is provided on the power transmission path 79 downstream of the transmission case 26, even if the transmission mechanism in the transmission case 26 is in the neutral state, the front and rear wheels 76, 76 are controlled by the brake mechanism 110. , 78, 78 can be stopped, and the aircraft can be reliably stopped even on an inclined surface such as a slope.

In this embodiment, the brake mechanism is provided on the power transmission path 79 on the upstream side of the rear axle case 77.
110, the left and right wheels 78, 78 can be stopped by one brake mechanism 110.
Since the brake mechanism 110 can be operated with a lower braking torque as compared with the case where the brake mechanisms 110 are provided on the left and right axles 100, respectively, the configuration of the brake mechanism 110 can be simplified, and the The operating force can be reduced, and the operability can be improved.

The brake mechanism 110 is similar to that shown in FIGS.
As shown in (2), it is disposed at a position immediately behind the transmission case 26.

Therefore, the transmission case 26 is located in front of the brake mechanism 110, so that the brake mechanism 110 does not collide with the ridge when the ridge is crossed, and the breakage of the brake mechanism 110 can be prevented.

It is possible to prevent mud and soil from adhering, and to maintain the braking force of the brake mechanism 110 satisfactorily.

Further, as shown in FIGS. 1 and 8, the brake mechanism 110 is disposed above the lowermost end of the transmission case 26.

Therefore, the ridge does not directly collide with the brake mechanism 110 when an obstacle on the road surface or the ridge is crossed.
Breakage of the brake mechanism 110 can be prevented.

Further, the brake mechanism 110 is provided in FIG.
As shown in FIG. 8, it is disposed immediately above the steering yoke 91.

Therefore, the lower side of the brake mechanism 110 is covered with the steering yoke 91,
It is possible to prevent mud and soil from adhering to the surface 110, and thus it is possible to maintain the braking force of the brake mechanism well.

In this embodiment, as shown in FIG.
Since the mud removing mechanism 152 is located immediately behind the mission case 26, the front side of the mud removing mechanism 152 is also covered by the mission case 26, preventing the mud and soil from adhering to the mud removing mechanism 152. can do.

Further, the scraper of the mud removing mechanism 152
Since it is possible to prevent mud and soil and pebbles from being caught between the 154 and the brake pulley 136 of the brake mechanism 110, the scraper 154 and the brake pulley
136 can be prevented from being damaged.

Further, since the mud removing mechanism 152 is provided at a position above the lowermost end of the transmission case 26, an obstacle on a road surface or a ridge directly collides with the mud removing mechanism 152 when the ridge is crossed. Therefore, it is possible to prevent the mud removing mechanism 152 from being damaged.

Further, since the steering yoke 91 is disposed immediately below the mud removing mechanism 152, the lower side of the mud removing mechanism 152 is covered with the steering yoke 91, and thus the mud removing mechanism 152 is also provided. It is possible to prevent the mud and soil from adhering, prevent the mud removing mechanism 152 from being damaged, and maintain the braking force of the brake mechanism 110 well.

In particular, as in the present embodiment, the steering yoke 91 is disposed immediately behind the transmission case 26, and the mud removing mechanism 152 is located immediately above the steering yoke 91.
The front side of the mud removing mechanism 152 is covered with the mission case 26 and the mud removing mechanism 152
Will be covered with the steering yoke 91,
By preventing obstacles on the road from colliding with the mud removing mechanism 152, it is possible to prevent the mud removing mechanism 152 from being damaged,
Mud and soil can be prevented from adhering to the mud removing mechanism 152, and the braking force of the brake mechanism 110 can be favorably maintained.

As shown in FIGS. 12 and 13, the transmission lever 102 has a support bracket 157 suspended from a lower rear portion of the main pipe 9 on the left side of the body frame 5, and the support bracket 15
7, the base end portion of the base-side shift lever assembly 158 is attached so as to be able to rotate back and forth, and the tip end side shift lever assembly 159 is attached to the tip end of the base-end shift lever assembly 158 so that it can swing left and right. In addition, the base end of a speed change rod 222 interlockingly connected to the transmission case 26 is interlockingly connected to an intermediate portion of the base end side transmission lever structure 158 via an adjustment plate 160.

The shift lever 102 is tilted from the front to the rear to sequentially move the vehicle body on the road (161), stop the vehicle body in a neutral posture (162),
The posture can be changed to a planting posture (163) for performing the planting operation and a reverse posture (164) for moving the body backward.

The transmission lever 102 has an operating pin 165 protruding rightward in the middle of the base-side transmission lever structure 158, and a substantially L-shaped operating member 166 on the main pipe 9.
When the shift lever 102 is shifted from the planting position (163) to the reverse position (164),
The operating pin 165 is engaged with the operating body 166 to pull a flexible backward interlocking wire as a lever interlocking mechanism 167 interlockingly connected to the operating body 166. In the figure, 168
Is a bracket, 169 is a pivot, 170 is an adjustment slot, 171 is an adjustment screw, and 172 is a pivot.

The lever interlocking mechanism 167, as described later,
When the speed change lever 102 and the planting elevating lever 103 are linked and connected, and the speed change lever 102 is operated to the reverse position (164) to move the machine backward, the planting machine 3 is raised.

FIG. 12 and FIGS.
As shown in 19, the main pipe on the right side of the fuselage frame 5
A support bracket 173 protrudes from the rear upper part of the base 10, and the base end of the base-side lifting / lowering lever assembly 174 is attached to the support bracket 173 so as to be able to rotate back and forth.
A distal-side elevating lever assembly 175 is connected to the distal end of the base, and a biasing spring 176 is interposed between the middle portion of the proximal-side elevating lever assembly 174 and the right rear pipe 19 to plant the plant. The lifting lever 103 is urged rearward. 177 is a lifting lever shaft, 178 is a hydraulic passage switching valve, 179 is a spool of the hydraulic passage switching valve 178, 180 is a main pipe 10
It is a bracket protruding from the upper part of.

The planting elevating lever 103 has a detent plate 181 mounted at an intermediate portion of the elevating lever shaft 177, and a base end of a detent arm 182 mounted on the main pipe 10 so as to be vertically rotatable. Attach the detent roller 183 rotatably in the middle of
A biasing spring 184 is interposed between the tip of the detent arm 182 and the bracket 180 to
183 urges the detent arm 182 in the direction in which it contacts the detent plate 181.

A detent recess 185 is formed on the outer peripheral surface of the detent plate 181. When the detent recess 185 engages with the detent roller 183, the planting elevating lever 103 is tilted from the front to the rear. Then, in order, the high-speed side planting posture (186) for performing the planting operation while running the aircraft at high speed, the low-speed side planting posture (187) for performing the planting operation while traveling the aircraft at low speed, and the planting from the engine 25. Attached machine 3
The transmission of power to the planting machine 3 is interrupted, and the posture can be changed to a descending posture (188) for lowering the planting machine 3, a neutral posture (189), and a rising posture (190) for raising the planting machine 3.

A planting clutch arm 191 is attached to the main pipe 10 so as to be vertically rotatable.
An actuating roller 192 is rotatably mounted in the middle of 191 and an interlocking wire 193 interlockingly connected to a tipping clutch (not shown) of the planting machine 3 is connected to the tip of the seeding clutch arm 191. The operating roller 192 is placed on the upper front side of the detent plate 181 by the tension of the interlocking wire 193.
To make contact.

When the planting elevating lever 103 is in the high-speed side planting position (186) or the low-speed side planting position (187),
The front upper part of the detent plate 181 presses the operating roller 192, the planting clutch arm 191 rotates forward, and the interlocking wire 193 pulls, so that the planting machine 3 operates.
On the other hand, the planting elevating lever 103 moves down (188) and neutral
(189), if it is in the up position (190),
As the 193 relaxes, the planting machine 3 stops.

A vertically extending spool operating plate 194 is attached to the middle of the elevating lever shaft 177, and the tension of an urging spring 195 interposed between the lower portion of the spool operating plate 194 and the bracket 180. , Spool operating plate 194
Is biased in a direction away from the spool 179 of the hydraulic flow path switching valve 178.

Then, the planting elevating lever 103 is moved up (1
90), the upper rear portion of the spool operating plate 194 pushes the tip of the hydraulic flow path switching valve 178 to elevate the planting machine 3, while moving the planting elevating lever 103 at the high speed side planting. By changing the posture to the planting posture (186), the low-speed side planting posture (187), and the descending posture (188), the planting machine 3 is stopped at the planting work position (the descending position).

The position immediately before the planting elevating lever 103 is
As shown in FIG. 15, a support 196 is protruded from the upper portion of the main pipe 10, and a rotating shaft 197 is attached to the tip of the support 196 so as to be able to rotate back and forth with the axis line extending in the width direction. A switching plate 198 having a rhombic shape as viewed from the side is attached to the shaft 197 in a vertically extended state, and the high-speed side clutch wire 64 is operatively connected to the upper end of the switching plate 198, while the low-speed side is connected to the lower end of the switching plate 198. The clutch wire 56 is linked and connected.

In the middle of the planting elevating lever 103,
The switching pin 199 is protruded to the left, while the rotating shaft 19
7, a switching operation plate 200 is attached, and when the planting elevating lever 103 is rotated, the switching pin 199 of the planting elevating lever 103 is engaged with the engaging recess 20 formed at the upper part of the switching operation plate 200.
1 and the switching plate
198 rotate back and forth. In the figure, 202 is U
Character-like connecting body, 203 is a biasing spring for moving the switching operation plate 200 over the fulcrum, 204 is a differential lock lever, 205
Is a wire support.

When the planting elevating lever 103 is in the low-speed planting position (187) as shown in FIG.
198 extend vertically, the high-speed clutch wire 64 is pulled, while the low-speed clutch wire 56 is relaxed, thereby causing the low-speed clutch pulley 46 to move the low-speed transmission belt as described above. Close to 44,
The low-speed transmission belt 44 is pulled, and power is transmitted from the low-speed output pulley 39 of the engine 25 to the low-speed input pulley 42 of the transmission case 26, so that the aircraft travels at a low speed.

On the other hand, when the planting elevating lever 103 is in the high-speed planting posture (186), the switching plate 198 is extended in the front-rear direction, and while the low-speed clutch wire 56 is pulled, The high-speed clutch wire 64 relaxes, thereby causing the high-speed clutch pulley 45 to move as described above.
Is close to the high-speed transmission belt 43, the high-speed transmission belt 43 is pulled, and power is transmitted from the high-speed output pulley 38 of the engine 25 to the high-speed input pulley 41 of the transmission case 26, so that the aircraft runs at high speed. I am trying to do it.

As shown in FIG. 14, a planting interlocking wire 156 interlockingly connected to the interlocking plate 117 of the clutch mechanism 109 is connected to the right end of the detent plate 181 as shown in FIG.

When the clutch pedal 108 is depressed, as shown in FIG.
The detent plate 181 is rotated clockwise to a position where the planting elevating lever 103 is in the low-speed planting posture (187) by the tension of the planting interlocking wire 156.

At the tip of the detent arm 182, FIG.
As shown in the figure, a reverse interlocking wire as a lever interlocking mechanism 167 is interlockingly connected.

Then, the shift lever 102 is moved backward (164
), The reverse interlocking wire as the lever interlocking mechanism 167 is pulled, and the detent arm 182 is rotated downward by the tension of the reverse interlocking wire. At the same time, the urging force of the urging spring 176 causes the planting elevating lever 103 to change its posture to the ascending posture (190), whereby the interlocking wire 193 is relaxed and the operation of the planting machine 3 is stopped. , Spool operating plate
The upper rear portion of 194 presses the front end portion of the hydraulic flow path switching valve 178 so that the planting machine 3 is raised.

As described above, the shift lever 102 is moved in the reverse posture (1
64), the planting elevating lever 103 changes to the rising posture (190) in conjunction with it, and the planting machine 3 is raised, so that the planting The attaching machine 3 does not collide with a ridge or an obstacle on the road, and damage to the planting machine 3 can be prevented.

The planting machine 3 has a planting operation device 206 connected to a rear portion of the lifting mechanism 4, and a seedling mounting table above the planting operation device 206.
207 is mounted on the front, rear, and high slopes. In the figure, 208 is a float and 209 is a fertilizer application device.

The planting interlocking mechanism 28 has a drive shaft 210 interlockingly connected to the transmission case 26, a driven shaft 211 interlockingly connected to the drive shaft 210, and a planting work device 206 interlockingly connected to the driven shaft 211. I have.

The lifting mechanism 4 has a support 212 mounted on the front upper portion of the planting operation device 206, and a pair of lower right and left lower ends between the left and right base ends of the support 212 and the rear ends of the main pipes 9 and 10. Each of the side support rods 215 is mounted to be rotatable up and down, while the upper support rod 213,
214 so that they can rotate vertically, and
3,214 and a lower support rod 215 constitute a parallel link. Further, a crank rod 216 is attached to the rear end of the main pipes 9,10 so as to be able to rotate back and forth, and a distal end of the crank rod 216 and the connecting pipe 16 are connected. A hydraulic lifting cylinder 217 is disposed between the lifting cylinder 217 and the base end of the operating rod 218 at the distal end of the lifting cylinder 217.
The front of the 206 is interlocked.

Then, the planting machine 3 is lowered by extending the lifting cylinder 217, and the planting machine 3 is raised by shortening the lifting cylinder 217.

The driving shaft 210 and the lifting mechanism 4 of the planting interlocking mechanism 28
As shown in FIG. 1, the lifting cylinder 217 has a housing space formed between the shift lever 102 and the planting lifting lever 103.
12, a reverse interlocking wire as a lever interlocking mechanism 167 is arranged in a state in which the accommodation space 219 is detoured.

As described above, in this embodiment, the speed change lever 10
A planting interlocking mechanism 28 for transmitting the power of the traveling machine body 2 to the planting machine 3 and a lifting mechanism 4 for operating the planting machine 3 up and down are accommodated between the planting machine 2 and the planting elevating lever 103. The storage space 219 for the storage space is formed, and the lever interlocking mechanism 167 is disposed in a state where the storage space 219 is bypassed.
9 can accommodate the planting interlocking mechanism 28, the elevating mechanism 4, and the like, and the traveling body 2 can be made compact.

A lever interlocking mechanism 167 is constructed by interlocking the base end of a flexible interlocking wire to the transmission lever 102 and by interlocking the planting elevating lever 103 to the distal end of the interlocking wire. The structure of the lever interlocking mechanism 167 can be simplified,
Maintenance work of the lever interlocking mechanism 167 can be facilitated.

[0123]

The present invention is embodied in the form described above and has the following effects.

(1) In the present invention, when the attitude of the interlocking operation lever is changed from the aircraft running attitude to the aircraft stopping attitude, the clutch mechanism is disengaged, and thereafter the brake mechanism is operated. The brake mechanism will operate with the power from the engine cut off, and the braking torque of the brake mechanism can be reduced,
The structure of the brake mechanism can be simplified.

Further, the operator can operate the clutch mechanism and the brake mechanism only by operating the interlocking operation lever once, and the operability can be improved.

Further, even if the clutch mechanism is damaged, the machine body can be reliably stopped by the brake mechanism, and safety can be improved.

(2) In the present invention, when the attitude of the interlocking operation lever is changed from the body stopping attitude to the aircraft running attitude, the brake mechanism is released, and thereafter the clutch mechanism is brought into the connected state. The aircraft does not suddenly start, and the occurrence of engine stall can be prevented.

[Brief description of the drawings]

FIG. 1 is a left side view showing a rice transplanter according to the present invention.

FIG. 2 is a left side view showing a clutch-brake interlocking mechanism.

FIG. 3 is a plan view showing a two-speed transmission mechanism.

FIG. 4 is a plan view showing a clutch-brake interlocking mechanism.

FIG. 5 is a rear view of the same.

FIG. 6 is a rear view showing the brake mechanism.

FIG. 7 is a plan view of the same.

FIG. 8 is a left side view of the same.

FIG. 9 is a left side view showing the drive shaft.

FIG. 10 is a left side view showing the interlocking operation lever.

FIG. 11 is a front view of the same.

FIG. 12 is a plan view showing a planting elevating lever.

FIG. 13 is a left side view showing the shift lever.

FIG. 14 is a left side view showing the planting elevating lever.

FIG. 15 is a left side view showing the operation of the planting elevating lever (when the posture is changed from the low-speed planting posture to the high-speed planting posture).

FIG. 16 is a left side view showing the planting elevating lever (with the detent plate removed).

FIG. 17 is a left side view showing the planting elevating lever (when the planting posture is set to the low-speed side).

FIG. 18 is a left side view showing the operation of the planting elevating lever (when the clutch pedal or the interlocking operation lever is operated).

FIG. 19 is a left side view showing the operation of the planting elevating lever (when the shift lever is operated).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding rice transplanter 2 Running body 3 Planting machine 4 Elevating mechanism 5 Airframe 6 Running part 7 Motor unit 8 Operation operation part 25 Engine 26 Transmission case 27 Two-speed transmission mechanism 28 Planting interlocking mechanism 29 Bonnet 30 Spare nursery 74, 75 Front axle case 77 Rear axle case 76,78 Wheels 79 Power transmission path 87 Steering wheel 91 Steering yoke 99 Drive shaft 102 Shift lever 103 Planted elevating lever 106 Clutch-brake interlocking mechanism 107 Interlocking operation lever 108 Clutch pedal 109 Clutch mechanism 110 Brake Mechanism 152 Mud removal mechanism 153 Support 154 Scraper 156 Planting interlocking wire 167 Lever interlocking mechanism 181 Detent plate 182 Detent arm 219 Housing space

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) G05G 9/04 G05G 9/04 13/00 13/00 F term (reference) 2B062 AA02 AA20 AB01 AB07 BA14 BA17 BA18 BA22 BA23 BA24 BA43 BA80 3D039 AA02 AA04 AB14 AC05 AC34 AD06 AD23 AD54 3J070 AA03 BA34 CA43 CC04 CC07 DA03 EA11

Claims (2)

[Claims] A traveling section (6) is interlocked to a motor section (7) via a clutch mechanism (109) and a brake mechanism (110),
The clutch mechanism (109) and the brake mechanism (110) are interlockingly connected via a clutch-brake interlocking mechanism (106), and the interlocking operation lever (107) is connected to the clutch-brake interlocking mechanism (106).
The interlocking operation lever (107) sets the clutch mechanism (109) in the connected state and the brake mechanism (110) in the released state, and the aircraft running posture (140) and the clutch mechanism (109) in the disconnected state. The rice planting machine is configured such that the attitude can be changed to the aircraft stop attitude (141) that activates the brake mechanism (110). When the posture is changed to the stop posture (141), the clutch mechanism (10
9) A rice transplanter characterized in that it is configured to be in a disconnected state, and then the brake mechanism (110) is in an activated state. 2. A traveling unit (6) is connected to a motor unit (7) via a clutch mechanism (109) and a brake mechanism (110).
The clutch mechanism (109) and the brake mechanism (110) are interlockingly connected via a clutch-brake interlocking mechanism (106), and the interlocking operation lever (107) is connected to the clutch-brake interlocking mechanism (106).
The interlocking operation lever (107) sets the clutch mechanism (109) in the connected state and the brake mechanism (110) in the released state, and the aircraft running posture (140) and the clutch mechanism (109) in the disconnected state. And the interlocking operation lever (107) moves from the aircraft stop position (140) to the aircraft stop position (141). When the posture is changed to the running posture (141), the brake mechanism (11
0) is in a released state, and thereafter, the clutch mechanism (109) is configured to be in a connected state.