JP3324187B2 - Walking rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting position of a side clutch lever of a walking rice transplanter and an operation for connecting the same.
It is about wires .

[0002]

2. Description of the Related Art In general, a walk-behind rice transplanter configured to hold a steering wheel projecting rearward from an airframe with both hands for steering is generally provided with a side clutch lever near a lower side of left and right grips of the steering wheel. The left and right side clutches can be turned on and off while holding .

[0003]

SUMMARY OF THE INVENTION A walking type rice transplanter of this kind
Is equipped with a pitching mechanism that raises and lowers the aircraft with hydraulic pressure.
The aircraft is held by the pitching mechanism when turning.
Usually it can be raised.
On the other hand, when turning, disengage the side clutch inside the turn.
Therefore, raise the aircraft in conjunction with this operation
This is convenient. However, for example, small turns
The aircraft must be raised and lowered when turning
In such a case, the side clutch lever
Operation so that the pitching changeover valve does not interlock
It is desirable to keep. Therefore, the present invention provides a side clutch lever.
Pitching switching valve can be switched in conjunction with bar operation
As well as stop the interlocking as needed.
The challenge is to make it happen.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the walking type rice transplanters according to the present invention is a walk-behind rice transplanter to steer while grasping the left and right grips (140, 140) of the steering wheel with both hands, the left and right grips (14
0) Near the lower side, pull it toward the grip side
Set the side clutch lever (142) to release the clutch.
The left and right side clutch levers
While connecting the clutch operation wire (97),
Pull the side clutch lever to the grip side and the aircraft
Operating the pitching switching valve so that the pressure rises
Wire for operating the switching valve (145).
Side clutch lever than the connecting position of the
To a position distant from the rotation shaft (143) of the
It is characterized in that was.

[0005] The side clutch lever is located below the grip.
On the grip side.
Latch off, so while holding the grip,
It can be operated using four fingers. This sidek
A side clutch operation wire is connected to the latch lever.
The connection position of this side clutch operation wire
Position farther from the rotation axis of the side clutch lever than
The pitching switching valve operation wire is detachably connected to
When turning, release the side clutch lever.
The aircraft can be raised in conjunction with the operation.

In addition, the pitching switching valve operating wire
Is detachably connected to the side clutch lever.
Release the side clutch lever as necessary.
The pitching switching valve does not interlock even when the id clutch is operated.
Can be done. In this case, pitching switching
The valve operation wire is connected to the side clutch operation wire.
Farther from the rotation axis of the side clutch lever than the position
The side clutch is connected during the disengagement operation.
Operation wires do not get in the way.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A four-row walking type rice transplanter shown in FIGS. 1 to 8 will be described below as an embodiment of the present invention.

In this walking type rice transplanter 1, a transmission case 2, an engine 3, a hydraulic unit 4, a hydraulic pump 5 and the like are arranged at the front of the body, and a cylindrical portion projecting laterally from a side surface of the transmission case. 2a, transmission cases 6, 6
Are provided so as to be rotatable up and down, and wheels 7 for paddy fields are pivotally supported at the rear end of the transmission case. A main frame 9 is fixedly connected to a rear portion of the transmission case 2 on the base side thereof. The main frame 9 extends rearward through the lower portion of the fuselage, is curved upward at an intermediate portion thereof, and has a shape in which a rear portion thereof jumps up obliquely upward. A planting section frame 12 having a transmission mechanism is fixedly provided inside at a position slightly forward of the curved section, and a seedling mounting table 13 and planting apparatuses 14,... A handle 17 and a control box 18 are attached to the rear end of the main frame 9.

The planting section frame 12 includes a central case 20 located at the left and right central portions, chain cases 21 (L, R) located on both left and right sides of the central case, an upper portion of the central case 20 and the chain case 21 ( L, R) and a transmission pipe 22 (L, R) connecting the upper parts thereof.
, A total of four sets of planting devices 14,..., Are provided on the lower left and right outer portions and on the lower inner portion of the chain case 21 (L, R).

The seedling mounting table 13 is provided substantially in parallel with the rear part of the main frame 9 in a side view, and is inclined so that the front part is at a low position. The front side is a seedling mounting surface on which seedlings are mounted, and the seedling mounting surface is equally divided into four seedling mounting portions 13.
a,... Each of the seedling mounting sections 13a,... Is provided with a seedling feeder 24,. The seedling mounting table 13 has a lower back surface slidably supported by a support frame 26 extending horizontally, and a roller attached to the main frame 9 on a rail 27 fixed to the upper back surface. 28 are engaged and can reciprocate left and right. An L-shaped seedling receiving plate 29 is integrally formed with the support frame 26 in a side view, and the lowermost seedling of the seedling mounting table 13 is received by the seedling receiving plate. In a suitable place of the seedling receiving plate 29, there are formed seedling outlets 30,.

The central case 20 of the planting portion frame 12 has a helical shape in which a laterally movable rod 32 slidably supported in the axial direction and a claw 33a of a lead metal 33 attached to the laterally movable rod are engaged. And a lead camshaft 34 in which a groove 34a is formed on the outer peripheral surface (see FIG. 3). Lateral moving rod 3
Seedling support arms 35 are fixed to left and right end portions protruding outside the case 2, and the front ends thereof are connected to lower end side surfaces of the seedling mount 13. When the lead cam shaft 34 rotates, the claw 33a of the lead metal 33 moves along the groove 34a of the lead cam shaft 34, whereby the laterally moving rod 32 reciprocates left and right. The seedling table 13 also reciprocates left and right integrally with the laterally moving rod 32, and removes the seedlings at the bottom of the seedling table 13 to the seedling outlet 3.
0,...

A seedling feed arm shaft 37 is provided in parallel with the lead cam shaft 34 so as to be rotatable in the circumferential direction and movable in the axial direction. A drive cam 38 for the lead cam shaft and a pair of driven cams 39 for the seedling feed arm shaft are provided. And 40 are individually engageable. The driven cams 39 and 40 can move along the seedling feed arm axis 37,
The movement range is regulated by 42 and further separated from each other by a spring 43 interposed between them. A seedling feeding arm 45 for operating the seedling feeding device 24,... Is fixed to an end of the seedling feeding arm shaft 37 protruding outside the case, and a fixed metal 46 is attached to an appropriate position of the laterally moving rod 32 correspondingly. Have been. When the seedling mounting table 13 reaches the right end of the left and right strokes, the fixed metal 46 pushes the seedling feed arm shaft 37 to the right, whereby the drive cam 38 and the driven cam 39 engage to rotate the seedling feed arm shaft 37 once. The seedling feeding devices 24 are operated by a predetermined amount. When the seedling mounting table 13 reaches the left end of the left and right stroke, the lead metal 3
3 pushes the seedling feed arm shaft 37 to the left, so that the drive cam 38 and the driven cam 40 are engaged to rotate the seedling feed arm shaft 37 once in the same direction, thereby operating the seedling feeders 24,. .

The planting device 14 includes a crank 50 and a link 5
1 comprising an implanted rod 52 supported by
Is rotated, the implantation claw 52a provided at the tip of the implantation rod 52 moves up and down along a predetermined trajectory, and the seedlings of the seedling mounting table 13 supplied to the seedling removal outlet 30 are moved to the field scene. (See FIG. 5).

At the lower part of the fuselage, a large center float 54 which is long in front and rear and a pair of relatively small left and right side floats 55 are provided. The arm 5 is attached to the float support rod 56 rotatably supported by the planting section frame 12.
7 are integrally attached, and attachment members 58,... Fixed to the front end of the arm and the rear of each of the floats 54, 55, 55.
Are pivotally connected to each other. Therefore, the float supporting height can be adjusted by rotating the float supporting rod 56 by the planting depth adjusting lever 60. The front part of the center float 54 is an enlargement / reduction link 61.
, And the tip portions of the side floats 55 are suspended by swing links 62.

On the upper part of the body, a spare seedling mounting table 65 on which spare seedlings are placed is provided with a support 6 fixed to the main frame 9.
It is supported substantially horizontally by 6,67.

Next, the transmission configuration of the walking rice transplanter 1 will be described (see FIG. 4).

The engine output taken out by the engine output shaft 70 is transmitted from a gear 71 of the output shaft to a gear 74 of a clutch shaft 73 via a double gear 72. The gear 74 is rotatably mounted on the clutch shaft 73 so that transmission from the gear 74 to the clutch shaft 73 can be turned on and off by the main clutch 75. The switching arm 76 for switching the main clutch 75 is connected to a main clutch lever 157 described later via a wire 77.

Two traveling transmission gears 8 are provided on the clutch shaft 73.
0, 81 and a back gear 82 are attached. The traveling transmission gears 80 and 81 are gears 85 and 86 of the traveling gear shaft 84.
, And a high speed and a low speed forward two-speed gear ratio can be obtained. When the back gear 82 and the gear 85 are indirectly engaged with each other via the counter gear 89 of the planted gear shaft 88, the reverse speed is obtained. Running gear shaft 84
Is transmitted to the wheel drive shaft 93 by gears 91 and 92. Wheel drive shaft 93 projecting into transmission cases 6 and 6
Side clutches 95, 95 are provided at both left and right end portions of the vehicle so that the driving of the left and right wheels 7, 7 can be individually turned on and off. The switching arms 96, 96 for switching the side clutches 95, 95 are operated by side clutch levers 142, 142 described later via wires 97, 97. In the transmission case 6, transmission chains 98 and 99 are provided.

The clutch shaft 73 has the gear 8
0, 81, 82, two inter-stock transmission gears 102,
103 is attached. Inter-gear shifting gear 102,1
03 is selectively meshed with the double gear 104 of the planting gear shaft 88, so that the seedling planting can be switched between two stages. The planting output is transmitted to the transmission mechanism in the planting portion frame 12 via the first, second, and third planting transmission shafts 106, 107, 108 connected by the universal joints 105, 105.

The planting output input into the planting section frame 12 is first transmitted to the planting drive shaft 110. The transmission section is provided with a planting clutch 111. The planting clutch 111 is a fixed position stop clutch, and the planting portion transmission shaft 1
When the rotation of 06, 107 and 108 stops, the planting drive shaft 110 is stopped at a predetermined rotation position. The clutch pin 112 of the planting clutch 111 is operated by the below-described planting clutch lever 147 via the wire 113. The rotation of the planting drive shaft 110 is controlled by the chain 115, which is stretched in the rear portion of the central case 20 and the chain case 21 (L, R).
Are transmitted to the crankshafts 116 on which the cranks 50 are mounted.

The transmission from the planting drive shaft 110 to the lead camshaft 34 is transmitted through a gear train type seedling harvesting amount adjusting device comprising a combination of gears 117, 118 and gears 119a, 119b. By changing it, the amount of seedlings can be switched between two stages.

The rice transplanter 1 performs lifting and lowering control and rolling control of the machine body by hydraulic pressure. The configuration of the aircraft control device is as follows (see FIG. 5).

A pitching cylinder 120 for elevating and lowering the fuselage is provided extending rearward from the rear of the hydraulic unit 4.
A link plate 122 urged backward by a spring 121 is horizontally mounted on the distal end of the piston rod. The left and right ends of the link plate 122 are connected to upper ends of swing arms 124, 124 projecting upward from the cylindrical portions 6a, 6a of the transmission cases 6, 6, respectively.
They are connected via (L, R). Left connecting rod 12
5 (L) is provided with a rolling cylinder 126 for expanding and contracting the connecting rod.

In the hydraulic unit 4, as a control valve, the switching valve 130 of the pitching cylinder 120, the switching valve 131 of the rolling cylinder 126, and the oil supplied from the pump 5 are distributed and supplied to these switching valves 130 and 131. A valve 132 and the like are provided. Pitching switching valve 1
30 is a detection rod 1 attached to the center float 54
It operates in conjunction with the vertical movement of 35. Further, the rolling switching valve 131 connects the swing links 62, 62 to the rotation center shaft 13.
It operates in conjunction with the rotation of 7,137.

The height of the field scene is detected by the detection rod 135, the pitching switching valve 130 is switched accordingly, and the pitching cylinder 120 expands and contracts.
Then, the swing arms 124, 124 are rotated back and forth via the connecting rods 125 (L, R), and the right and left wheels 7, 7 simultaneously move up and down by the same amount with respect to the body. To keep the planting depth of the seedlings constant.

Further, the left and right inclination of the body is detected by the left and right rotation center shafts 137, 137, and accordingly, the rolling switching valve 131 is switched, and the rolling cylinder 126 expands and contracts. Then, the left swing arm 124 is rotated, and only the left wheel 7 (L) moves up and down with respect to the aircraft, thereby correcting the lateral inclination of the aircraft.

The handle 17 has a base fixed to the rear end of the main frame 9 and grips 140, 1 attached to the rear ends of the handle bars 17a, 17a extending left and right rearward from the base.
40 is fitted. Attachment members 141, 141 are fixedly provided at front positions of the grips 140, 140, and side clutch levers 142, 142
3, 143 so as to be rotatable up and down. To the side clutch levers 142, 142, the ends of the side clutch operation wire 97 and the pitching switching valve operation wire 145 are respectively connected.
When the right side clutch lever 142 (R) is pulled upward, the right side clutch 75 (R) is disengaged, and the pitching switching valve 130 is operated in a direction in which the body rises, and the left side clutch lever 142 (L)
When the is pulled upward, the right side clutch 95 (L) is disengaged, and the pitching switching valve 130 is operated in the direction in which the machine body rises.

The pitching switching valve operating wire 14
5 is connected to the side clutch lever 1
42, the pitching switching valve
Since the operation wire 145 is detachably attached to the side clutch lever 142, the pitching switching valve operation is performed.
The action wire 145 may be disengaged from the side clutch lever 142 to prevent the machine body from moving up and down in conjunction with the operation of the side clutch lever 142.

Further, a planting clutch lever 147 is provided inside the right handlebar 17a (R).
The planting clutch lever 147 is connected to the handlebar 17a.
It is attached rearward to a support shaft 148 projecting inward from the inner surface of (R), and can be vertically turned by a thumb while gripping the grip 140. A plate 153 in which an arm 150 having a pin 149 integrally formed at the distal end is rotatably supported by the mounting member 141, and a tubular member 152 fitted to the pin 149 is fixed to the lower surface of the intermediate portion of the planting clutch lever. And the end of the implanting clutch operating wire 113 is connected to the pin 149. When the planting clutch lever 147 rotates, the pin 149 moves along the long hole 153a accordingly, the wire 113 is pulled or returned, the clutch is engaged by raising the lever, and the clutch is disengaged by lowering the lever. . The stroke of the planting clutch lever 147 corresponds to the stopper portion 141 of the mounting member 141 provided so that the bent portion 150a of the arm 150 is engaged.
a, 141b, the planting clutch lever 147 is positioned higher than the grip 140 when the planting clutch is engaged, and the planting clutch lever 147 is lower than the grip 140 and smaller than the side clutch lever 142 when the planting clutch is off. Is also set to be at the top.

The control box 18 includes a main switch 165 for starting and stopping the engine, a hydraulic lever 166 for raising and lowering the body, a main clutch 75
Main clutch lever 157 for turning on / off the switch, and a sensitivity adjusting lever 1 for adjusting the sensitivity of lifting / lowering control and rolling control.
68, 169 are provided. As shown in FIG.
Position of the hydraulic lever 166 includes a planting position P ₁ to lower the body, the raised position P ₂ to raise the aircraft, fixed position P to fix the state of raising the fuselage road or the like
There are _three . The operation by the hydraulic lever 166 has priority over the operation by the side clutch lever 142, and the hydraulic lever 1
Only when the 66 is operated to the planting position, the body is moved up and down by the side clutch lever 142.

When using the walking rice transplanter 1, the main switch 165 is turned on to start the engine 3. During the planting operation, the hydraulic lever 166 is set to the planting position, and the planting clutch lever 147 is turned on. Then, when the main clutch lever 157 is engaged, the wheels 7, 7 are driven to start running, and the planting section is driven to start planting. The operator is the grip 14 of the handle 17
Operate the aircraft by holding 0,140 with both hands.

When turning the machine at the end of the field, the planting clutch lever 147 is turned off to stop the driving of the planting portion, and at the same time, the side clutch lever 14 inside the turning is stopped.
Pull 2 to stop driving the inner wheels 7 and raise the fuselage. When turning the aircraft to the right, use the right hand to planted clutch lever 147 and side clutch lever 14
2 is operated, and this operation pushes down the planting clutch lever 147 with the thumb as shown in FIG.
In addition, this is an operation to pull up the side clutch lever 142 with the other four fingers, and the user can operate it while holding the grip 140 with his palm. The planting clutch lever 147 is provided in the vicinity of the inside of the grip 140, and its operating position is higher than the grip 140 when it is turned on and lower than the grip 140 when it is turned off. The operation of the attached clutch lever 147 is extremely easy. Therefore, the operation of the aircraft does not become out of order, and the planting is not disturbed.

When the turning is completed, the side clutch 9
5 and the planting clutch 111 are turned on to restart planting. When the finger is released from the side clutch lever 142, the side clutch lever 142 returns to its original state by the restoring force of the wire 97, and the side clutch 95 is engaged. At this time,
Since the four fingers pulling the side clutch lever 142 are released, as shown in FIG. 10, appropriate fingers (for example, the index finger, the middle finger, and the ring finger) are gripped by the grip 140.
When the planting clutch lever 147 is pushed up with these fingers, the planting clutch 110 is engaged.

When traveling on the road, the hydraulic lever 166 is operated to the fixed position to fix the machine body to the raised position, and the planting clutch lever 147 is operated to the off position to stop driving the planting section. deep.

In this embodiment, the planting clutch lever 1 is used.
Although 47 is provided near the inside of the right grip 140 (R), it may be provided near the inside of the left grip 140 (L). In some cases, the planting clutch lever 147 may be provided so as to be replaceable on either the left or right.

[0036]

As described above, the walk- behind rice transplanter according to the present invention can be used with the left and right side clamps while holding the grip.
The latch lever can be operated.
A wire for operating the pitching switching valve is connected to the clutch lever.
Because it is tied, when turning the aircraft, the grip inside the turn
Grip with only one hand and the lower side clutch lever
By operating the aircraft, the aircraft can be raised and lowered simultaneously with turning.
I can do it. In this case, the operator grips the outside grip
You do n’t have to
No hunger and stable running during turning
The planting is not disturbed. Also, pitching switching valve
The operation wire is detachably connected to the side clutch lever.
Attached to the side clutch lever
Can be moved to prevent the aircraft from going up and down.
Do not raise or lower the aircraft each time you make a small turn around the ridge.
And the adaptability to working conditions is improved.
In addition, wire the pitching selector valve
Is the rotation axis of the side clutch lever more than the wire for
Because it is attached detachably at a position away from
The side clutch operation wire is not in the way when disengaging,
Removal can be performed easily.

[Brief description of the drawings]

FIG. 1 is a side view of a walking rice transplanter according to an embodiment of the present invention.

FIG. 2 is a plan view of the walking rice transplanter shown in FIG.

FIG. 3 is a sectional view of a main part of the planting section frame.

FIG. 4 is a transmission system diagram.

FIG. 5 is a hydraulic circuit diagram.

FIG. 6 is a perspective view of a rear part of the fuselage.

FIG. 7 is a side view of the planting clutch lever mounting portion.

FIG. 8 is a bottom view of the planting clutch lever mounting portion.

FIG. 9 is a first operation explanatory view of the planting clutch lever and the side clutch lever.

FIG. 10 is a second explanatory view of the operation of the planting clutch lever and the side clutch lever.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Walking rice transplanter 2 Transmission case 3 Engine 4 Hydraulic unit 7 Wheel 13 Seedling stand 14 Planting device 17 Handle 18 Control box 75 Main clutch 95 Side clutch 111 Planting clutch 140 Grip 142 Side clutch lever 147 Planting clutch lever 157 Main clutch lever

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Niiyama 1-Yakura Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. (72) Inventor: Rieki Seike, 1-Yakura, Toze-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. (72) Inventor, Hisashi Kamiya, 1st Section, Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. Document JP-A 64-32932 (JP, A) JP-A-1-145231 (JP, A) JP-A 5-168316 (JP, A) JP-A 4-356112 JP, A) JitsuHiraku Akira 64-423 (JP, U) (58 ) investigated the field (Int.Cl. ^7, DB name) A01C 11/02 313 - 332

Claims (1)

(57) [Claims] 1. A left and right grip (1 ) of a steering handle with both hands.
In the walking rice transplanter that is steered while gripping the lower and upper grips (140) of the left and right grips (140).
Next to the grip side, pull the side clutch off
Side clutch lever (142)
Side clutch operation for each side clutch lever
Wire (97) and the side
Pull the Chilever to the grip side and the aircraft will rise
Operating the pitching switching valve
Wire for the side clutch operation (145).
The rotation axis of the side clutch lever (1
43) A walking rice transplanter characterized by being detachably connected to a position distant from the rice transplanter.