JP2554193Y2 - Operation device for walking type mobile agricultural machine for paddy field - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking type portable agricultural machine for paddy fields such as a walking rice transplanter, and more particularly, to a paddy field walking machine capable of automatically controlling the height of a body by means of a body height detection mechanism such as a float. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device for operating a body height of a mobile agricultural machine using two levers, a travel clutch lever connected to a travel clutch and a work clutch lever connected to a work clutch.

[0002]

2. Description of the Related Art Conventionally, an operating device in a walking rice transplanter has been disclosed in, for example, Japanese Patent Publication No. 3-21123.
The traveling clutch lever is linked to the traveling clutch via a wire, and an arm that contacts and interlocks at the disengaged position of the lever is linked to the operating plate of the hydraulic switching valve. The arm which is linked with the planting clutch via the lever and which is brought into contact with the lever at the cut position of the lever is linked with the operating plate, and the operating plate is linked with the front part of the float via the rod and the arm. .

[0003] With this, at the on position (and off position) of the traveling clutch lever and the planting clutch lever, the operation plate is in the automatic position, and the hydraulic switching valve is switched based on the detection of the earth pressure from the float. The operating plate is operated in the body lowering direction by the turning position of the lever or further rotation from the cutting position, and the operating plate is moved in the body raising direction by the further rotation of the planting clutch lever from the cutting position or the cutting position. Operating.

[0004]

[Problems to be solved by the invention] By the way, the above-mentioned 2
In the operation by the clutch lever, two wires are extended from each lever, and these wires are arranged in a bent state, so that the structure becomes complicated, the operation resistance of the wires is large, and Operation becomes heavy.

It is also necessary to adjust the relationship between the hydraulic switching valve and the two clutch levers, and adjust the relationship between the on / off operation of the traveling clutch and the planting clutch by these clutch levers and the lifting / lowering operation of the switching valve body. However, in the above-described configuration, it is necessary to adjust the arm position in contact with the clutch lever and the relationship between the operation plate and the wire in two places, which is extremely troublesome.

It is also conceivable that the hydraulic pressure switching valve and the two levers are linked by a rod. In this case, however, the adjusting portions of the rod are separately arranged on the left and right sides, so that the right and left sides of the machine body are arranged. Adjustment must be performed separately, which makes the adjustment extremely troublesome.

[0007] Therefore, an object of the present invention is to provide an operating device for a walking-type mobile agricultural machine for paddy fields, which solves the above-mentioned problems by disposing the hydraulic pressure adjusting unit on one side of the machine body.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a first operating lever (2) and a traveling clutch (3) connected to a work clutch (1).
And a paddle wheel (7) provided on a rocking member (6) swingably supported by the body (4), and further provided with a rocking member (5). 6) is connected to a hydraulic actuator (9), and a switching valve (10) communicating with the hydraulic actuator is connected to a body height detecting mechanism (11,
The present invention relates to a walking-type mobile agricultural machine (P) for paddy fields, which is connected to 12) and configured so that the switching valve is switched to automatically control the body height.

An operating portion (1a) of the working clutch (1) and a first operating lever (2) are arranged on one of the right and left sides of the machine body (4), and operating portions (1a) of these working clutches are provided. And a working clutch system connecting means (13, 14, 15) for connecting the first operating lever (2) and the operating portion (3a) of the traveling clutch (3) and the second The operating lever (5) is arranged, and the operating portion (3a) of these traveling clutches and the second
A traveling clutch system connecting means (16, 17, 19, 20) for connecting the operating lever (5) is disposed, and the switching valve (10) is connected to a connecting shaft extending in the left-right direction of the body (4).
(81) and the first clutch mechanism (21a, 22, 23), the work clutch system connecting means (14) is linked , and the connecting shaft (81) and the second flexible mechanism (25) are linked.
a, 26a) via the traveling clutch system connecting means (1).
6) and the switching of the connecting shaft (81)
The work clutch system connecting means (1) is disposed near the valve (10), and is provided on one of the left and right sides of the machine body (4).
4) and the lower hydraulic pressure adjusting section (27) for adjusting the relationship between the first accommodating mechanism (21a, 22) and the traveling clutch system connecting means (16) and the second accommodating mechanism (25a, 26a).
And a raising-side hydraulic pressure adjusting section (29) for adjusting the relationship with the pressure is provided.

[0010]

When the first operating lever (2) and the second operating lever (5) are at predetermined positions, for example, at the on position or the off position, the first accommodating mechanisms (21a, 22) and the second The switching valve (10) can be operated in the vertical direction based on the second accommodation mechanism (25a, 26a), and the body height is automatically controlled based on the body height detection mechanism (11, 12). Further, when the first operation lever (2) is further rotated in the disengagement direction, in this state, the work machine clutch system connecting means (13, 1)
The work clutch (1) is in the disengaged position via the control valve (4, 15), and the range of the first clutch mechanism (21a, 22) is restricted so as to allow only the lowering direction of the fuselage. ) Operates in the downward direction based on the body height detection mechanism. On the other hand, when the second operating lever (5) is further rotated in the disengagement direction, the traveling clutch (3) is in the disengaged position via the traveling clutch system coupling means (16, 17) in this state, and The amount of accommodation in the lowering direction of the accommodation mechanism (25a, 26a) is regulated, and the switching valve (1
0) is switched to the raised position.

In order to adjust the above-mentioned automatic range for elevating and lowering the machine body, the lowering position and the raising position, the first accommodating mechanism (21a, 22) and the second accommodating mechanism (25a, 26).
It is necessary to adjust each of the interchange positions in a). At this time, the operator is required to adjust the lower hydraulic pressure adjusting section (27) and the raising hydraulic pressure adjusting section (29) at one of the right and left sides of the fuselage. The adjustment can be easily performed while checking the interchange positions of the two interchange mechanisms. Also, the switching valve (10)
The connecting shaft (8) arranged near the switching valve (10)
1) and accommodation mechanism (21a, 22) (25a, 26a)
Work clutch system connecting means (13, 14, 15)
And traveling clutch system connecting means (16, 17, 19, 20)
The work clutch system connecting means (1
3, 14, 15) and traveling clutch system connecting means (16, 1).
7, 19, 20) from the rear of the aircraft to the front of the aircraft
Distribute to the left and right of the aircraft until it reaches (switch valve 10 side)
It becomes possible to arrange.

[0012]

[Effect of the invention] As described above, according to the invention,
Working clutch system connecting means (13, 14, 15) and running clutch system connecting means (16, 17, 19, 20), switching
The connecting shaft (81) arranged near the replacement valve (10)
Since the airbags are separately arranged on the left and right sides of the airframe from the rear of the airframe to the operating portion side in the front of the airframe , these connecting means can be constituted by rod members, and the configuration and arrangement of the connecting means can be simplified. As well as eliminating wire friction,
Operation can be lightened.

Since the lower hydraulic pressure adjusting section (27) and the raising hydraulic pressure adjusting section (29) are both disposed on one of the right and left sides of the machine body, the structure becomes extremely simple, and The accommodating positions of the accommodating mechanisms (21a, 22) and the second accommodating mechanisms (25a, 26a) can be extremely easily adjusted from one side of the fuselage. It can be done easily and accurately.

The reference numerals in parentheses described above are for comparison with the drawings, but do not limit the configuration.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings.

As shown in FIGS. 2 and 3, the walking rice transplanter P has a body 4 composed of an engine 31, a transmission case 32, a frame 33 and the like, and a handle 36 is provided behind the body 4. It is extended and seedling rest 3
7 is slidably supported in the left-right direction, and a planting rod 38 is disposed at a lower end portion of the seedling nest 37.
Further, a float 11 is suspended below the frame 33 so as to be swingable about a rear swing fulcrum 11a, and the float 11 senses the earth pressure on the rice field surface to detect the body height. It constitutes a detection mechanism. An output shaft 39 protrudes from the left and right sides of the transmission case 32, and furthermore, a chain case 6 is supported swingably around the output shaft. 7 are supported.

As shown in detail in FIG. 3, a bracket 41 fixed to the engine 31 in front of the fuselage 4 is provided.
A hydraulic cylinder 9 for adjusting the height of the fuselage is disposed between the hydraulic cylinder 9 and the bumper member 42 fixed to the transmission case 32. The hydraulic cylinder 9 is of a movable cylinder type. A rod 9a is fixed to the bracket 41 and the bumper member 42, and the cylinder 9b reciprocates up and down by being guided by the rod 9a. Further, the cylinder 9b
A balance arm 43 is swingably connected to the left and right about a pin 43a. Both ends of the balance arm 43 are fixed to the base ends of the swing chain cases 6, 6 via rods 45, 45, respectively. Arm 6a, 6a. A horizontal control hydraulic cylinder 46 is interposed between the intermediate portion of the balance arm 43 and the cylinder 9b. The cylinder 46 is controlled based on an inclination sensor 47, and moves the balance arm 43 right and left. The left and right paddy wheels 7, 7 are adjusted upside down reciprocally.

Then, as shown in FIG.
Two operation levers of a work (planting) clutch lever 2 and a traveling clutch lever 5 are arranged on a guide plate 50 (see FIG. 1) provided in the portion. Also, left and right side clutch levers 52L and 52R are disposed on the left and right handle grips 36a, respectively. Note that FIG.
Reference numeral 53 denotes a main shift lever, and 55 denotes a reciprocating motion of a screw shaft disposed in the transmission case 32, which is transmitted as a swinging motion via an arm 56, and furthermore, a seedling stand 37 via an arm 57. Swinging shaft that transmits the reciprocating motion of the right and left.

As shown in FIGS. 1, 2, 4 and 5, the planting clutch lever 2 guided by the right groove 50a of the guide plate 50 pivots below the handle 36 via a bracket. The traveling clutch lever 5 is transmitted to a freely supported plate 59a via a wire 60a and is similarly guided in a left groove 50b.
Is transmitted via a wire 60b to a plate 59b rotatably supported via a bracket below the handle 36. Also, the left and right side clutch levers 5
Wires 61L, 6 extending from 2L, 52R, respectively
1R is guided downward through the inside of the handle 36 and further forward along the frame 33. The rods 13 and 16 are provided from the left and right plates 59a and 59b, respectively.
(See FIGS. 3 and 4) extend forward of the fuselage.

As shown in FIG. 1, a connecting shaft 65 extending in the lateral direction of the vehicle body is supported rotatably on the frame 33 via a bracket 62 in the middle of the front and rear of the vehicle body 4, as shown in FIG. As shown in detail in FIG. 6, right and left angle members 66 and 67 each having a U-shape in a front view are rotatably supported, and an inner portion 66a of the left angle member 66 extends from the left side clutch lever 52L. The wire 61L extending from the right side clutch lever 52R is connected to the inner portion 67a of the right angle member 67.
R is linked. Further, the first arm 14 is fixed to the connecting shaft 65 in the left angle member 67, and the second arm 70 is fixed in the right angle member 66. Is connected to a rod 13 extending from the planting clutch lever. Also, the outer portion 67 of the right angle member 67
As shown in FIG. 1, a rod 71 is connected to the operating portion 7 of the right side clutch.
It is connected to 2. Further, a rod 73 is connected to an outer portion 66b of the left angle member 66, and a tip of the rod 73 is connected to an operating portion 75 of the left side clutch. Further, a lug 14a is formed integrally with the first arm 14, and a rod 15 penetrates the lug 14a. A spring 77 is contracted therebetween, and the tip of the rod 15 is connected to the operating section 1a of the planting clutch 1. The rod 15 is a lug 14a
Nut 79 screwed on the opposite side to the spring 77 of
By tightening and adjusting 79, its length is changed, and the engagement position of lever 2 and planting clutch 1 can be adjusted. A spring 80 is stretched on the side of the operation section 1a opposite to the rod connecting section.

On the other hand, as shown in FIG.
A shaft 81 penetrates through the transmission case 32 and is installed in the lateral direction of the fuselage further forward of the fuselage and near a switching valve 10 described later . A sensing rod 12 having a support structure at both ends is rotatably supported on the shaft 81 with the transmission case 32 interposed therebetween. A protruding portion 12 a protruding from the center of the rod 12 is
1, and is connected by being inserted through a connection plate 82 having a hat-shaped cross section. As a result, the vertical movement of the float 11 is transmitted to the sensing rod 12 as a rotation around the shaft 81, and the sensing rod 12 is rotatably supported on the shaft 81 only vertically by the support structure at both ends. The lateral deflection of the float 11 is prevented, and the sensing rod 12 itself does not twist. An arm 19 is rotatably supported at the left end of the body of the shaft 81. Further, a first plate 23 and a second plate 26 rotate between the arm 19 and the left boss of the sensing rod. It is freely supported.

A connecting plate 21 is connected to the distal end of the second arm 70 by bolts 85 and nuts 86. The connecting plate 21 has elongated holes 21a and 21b having predetermined lengths at both ends. The length of the rod 21, ie, the length of the long hole 21
The lower hydraulic pressure adjustment unit 27 that adjusts the interchange position according to a.

On the other hand, a rod 17 extending from the traveling clutch lever 5 has a plate 17 fixed at an intermediate branch portion thereof, and a distal end of the plate 17 is connected to an arm 19. Is connected to the operation unit 3a of the traveling clutch 3 via the rod 20. The rod 20 has a threaded end at one end, and the threaded portion is clamped and fixed to a bracket 19 a connected to the plate 19 by nuts 88, 88.
Can adjust the length of the rod 20, that is, the engagement position of the traveling clutch 3 with the traveling clutch lever 5.

The rod 16 also extends straight from the branch portion, and a nut portion 25b fixed to the plate 25 and a tightening nut 87 are screwed into a threaded portion 16a at the tip thereof. Is rotated to fix the tightening nut 87 at an appropriate position, thereby adjusting the length of the rod 16 and adjusting the interchange position of the long hole 26a formed in the second plate 26 described later. The unit 29 is constituted. Further, a spring 89 is provided in the rod 16 so as to pass therethrough.
Is contracted between the plate 17 of the intermediate branch portion and the nut 90 and the collar 91 screwed to the screw portion 16a.

On the other hand, one end of a rod 22 is fixed to the first plate 23 with a long hole 21a of the connecting plate 21 interposed therebetween, and the tip of the rod 22 is connected to the operating portion 10a of the hydraulic pressure switching valve 10. Connected. Then, the rod 22 moves in the long hole 21a of the plate 21 to constitute a first accommodation mechanism. The switching valve 10 includes a hydraulic cylinder 9 and a hydraulic pump 92 (FIG. 4).
), And is switched to an up position, a down position, and a neutral position depending on the turning position of the operation unit 10a. Further, a return spring 93 is stretched on the operation unit 10a, and the spring 93 is connected to the switching valve 10.
Is urged toward the lowered position.

The second plate 26 has a long hole 26a,
The first lug 26b protruding to one side, the second lug 26c protruding in the opposite direction, and the spring hook 26
d. A bolt 95 having a tightening nut is screwed to the first lug 26b, and the tip of the bolt can abut the side surface of the first plate 23, and the first plate 23 And the second plate 2
Regardless of the position 6, the first plate 23 is allowed to rotate in the raising direction. The second lug 26c is in contact with the sensing rod 12, and a spring 96 is stretched between the hook 26d and the bent portion of the sensing rod 12, so that the second plate 26 and the sensing rod 12 Are interlocked with each other via a spring 96 or by contact. And
A pin 25a is implanted in the plate 25 extending from the traveling clutch lever 5 via a lower hydraulic pressure adjusting portion 29, and the pin 25a is connected to the second plate 26.
In the second hole 26a, thereby forming a second accommodation mechanism.

Next, the operation of this embodiment based on the above configuration will be described.

To carry out planting work with the walking rice transplanter P,
The traveling clutch lever 5 is operated to the on position, and the traveling clutch operating section 3a is operated via the wire 60b, the rod 16, the branch plate 17, the arm 19 and the rod 20 extending on the left side of the machine body. Is connected, and the planting clutch lever 2 is operated to the on position, so that the wire 60a and the rod 1
3. The planting clutch operating section 1a is operated via the first arm 14 and the rod 15, and the planting clutch 1 is connected. Thus, the rice transplanter P travels while the paddy wheel 7 is driven, and the planting rod 38 rotates to perform the planting operation. At this time, the pin 25a of the plate 25 linked to the traveling clutch lever 5 is located in the middle of the long hole 26a of the second plate 26 and the planting clutch lever 2
First arm 14, connecting shaft 65 and second arm 7
0 of the connection plate 21 connected through the
Is located in the middle of the rod 22. In this state, the tip of the bolt 95 fixed to the first lug 26b abuts on the side surface of the first plate 23 based on the urging force from the return spring 93 of the switching valve 10, and The plate 23 and the second plate 26 are in a state of rotating integrally, and the rotation of the plates 23, 26 is not restricted by the long holes 21a, 26a. The vertical movement based on the earth pressure sensing is transmitted as a swinging movement to the sensing rod 12, further transmitted to the second plate 26 via the second lug 26c or the spring 96, and the first rotating integrally. It is transmitted to the operation part 10a of the switching valve 10 via the plate 23 and the rod 22. Thereby, the switching valve 10 is switched to the raising position, the lowering position, and the neutral position so that the body 4 is at a constant height with respect to the rice field based on the sensing of the earth pressure of the float 11, and the hydraulic cylinder 9 is operated. The height of the body is automatically controlled by moving the paddy wheels 7, 7 up and down.

Even if one or both of the traveling clutch lever 5 and the planting clutch lever 2 is operated to the off position, the pins 22, 25a are located in the middle of the slots 21a, 26a and the plates 23, 26 are located. As described above, the switching valve 10 is automatically controlled based on the up and down movement of the float 11 as described above.

Next, when the rice transplanter P reaches the headland and turns, the planting clutch lever 2 is operated to the fixed position while the traveling clutch lever 5 is held at the ON position. Then, the planting clutch 1 is disengaged and the planting rod 3
8, the connecting plate 21 is moved via the rod 13, the first arm 14, the connecting shaft 65, and the second arm 70, and one end of the long hole 21a of the plate 21 is connected to the rod 22. Abut In this position, the rotation of the first plate 23 in the lowering direction is prevented, and the switching valve 10 does not move to the lowering position, but enters a semi-automatic raising state in which only the raising direction is permitted. In this state, when the operator lifts the handle 36 upward, the distance between the front part of the float 11 and the body 4 is reduced, the sensing rod 12 is rotated clockwise, and the spring 96 and the second plate 26 are rotated.
Then, the first plate 23 is rotated in the same direction via a bolt 95 fixed to the first lug, and the switching valve 10 is switched to the raised position. As a result, the hydraulic cylinder 9 moves down the wheels 7, 7 and moves up the machine body 4. When the body 4 is raised by a desired amount, the handle 36 is lowered to bring the rice transplanter P to a horizontal state. At this time, the rod 22 of the first plate 23 is in contact with the end of the long hole 21 a of the connecting plate 21. As a result, the switching valve 10 is prevented from rotating in the downward (counterclockwise) direction, so that the switching valve 10 is held at the neutral position, and the body 4 is fixed at the raised position. At this time, the front part of the float 11 hangs down, the sensing rod 12 rotates counterclockwise, and the second plate 26 also rotates in the same direction by the contact of the second lug 26c. Only the contact between the bolt 95 fixed to the lug and the side surface of the first plate is separated, and the first plate 23 is not affected at all.

Further, when supplying seedlings to the seedling rest 37 of the rice transplanter P, the planting clutch lever 2 is set to the on position or the disengaged position, and the traveling clutch lever 5 is operated to the lowered position. Then, the traveling clutch 3 is disengaged, and the pin 25a implanted in the plate 25 at the tip of the rod 16 comes into contact with the end of the long hole 26a, and the second plate 26 rotates in the upward (clockwise) direction. Is regulated. In this position,
Even if the sensing rod 12 is pivoted upward (clockwise) from the float 11, the second plate 26 is not
Therefore, the switching valve 10 does not reach the raised position via the first plate 23, and enters a semi-automatic state where only the lowered direction is allowed. In this state,
The body 4 is at a lowered position where a predetermined earth pressure acts on the float 11, and is held in the lowered state even when the handle 36 is lifted to raise the body.

In order to transport or store, the rice transplanter P
In order to stop the height control and fix the machine body 4, the traveling clutch lever 5 is operated to the lowered position and the planting clutch lever 2 is operated to the fixed position. In this state, the traveling clutch 3 and the planting clutch 1 are both in the disconnected state, and the rod 22 comes into contact with one end of the long hole 21a of the connecting plate 21 to rotate the first plate 23 in the downward (counterclockwise) direction. In addition to restricting, the pin 25 at the tip of the rod 16
a abuts one end of the long hole 26a of the second plate 26 to restrict the upward (clockwise) rotation of the plate. Accordingly, the switching valve 10 is fixed at the neutral position, and the body 4 is maintained at the predetermined height regardless of the movement of the float 11.

And, irrespective of the operating position of the traveling clutch lever 5, that is, even if it is in the on position and in the traveling state,
Even when the planting clutch lever 2 is operated to the raised position even in the lowered position and the machine body lowered state, the switching valve 10 is switched via the rod 13, the first and second arms 14 and 70, the connecting plate 21 and the rod 22. Is moved to the raised position against the return spring 93. As a result, the hydraulic cylinder 9 swings the chain case 6 to lower the paddy wheels 7, 7 and raise the machine body 4. On this occasion,
The float 11 hangs down and relatively rotates the second plate 26 counterclockwise via the sensing rod 12,
The bolt 95 fixed to the first lug is merely separated from the side surface of the first plate 23, and does not hinder any movement of the first plate 23 in the raising direction. Similarly, even in a state where the movement of the second plate 26 in the raising direction is restricted, the bolt 95 fixed to the first lug is similarly separated from the side surface,
It does not hinder the movement of the first plate 23.

Therefore, according to this embodiment, when the planting clutch lever 2 is operated to the raised position, the body 4 is raised with priority, so that the body can be raised quickly even in an emergency, and at this time, the planting is performed. It is sufficient to operate the clutch lever 2 against the return spring 80, and the clutch lever 2 can be operated lightly and the steering feeling can be improved.

When the traveling clutch lever 5 and the planting clutch lever 2 are further rotated from the disengaged positions, the springs 89 and 77 are absorbed by being compressed, and are absorbed by the traveling clutch lever via the plate 17 or the rod 15. No excessive force acts on 3 or the planting clutch 1.

On the other hand, the left and right side clutch levers 52L,
When one or both of 52R is operated, the left or right angle member 6 is connected via the wires 61L and 61R, respectively.
The left and right side clutches 75 and 72 are operated via the rods 73 and 71 from the outer portions 66b and 67b, respectively.

In order to adjust the automatic range, the lowered position and the raised position of the switching valve 10, the bolt 85 and the nut 86 are loosened while observing the position of the rod 22 in the elongated hole 21a of the connecting plate 21. The plate 21 is moved based on the elongated hole 21b, and the connecting position of the plate 21 to the arm 70 is fixed at an appropriate position with the bolt 85 and the nut 86, whereby the lower hydraulic pressure adjustment is easily performed. Similarly, with the pin 25a removed from the slot 26a, the plate 25 is rotated with respect to the rod screw portion 16a, and the plate 25 is moved in the axial direction based on the nut portion 25b. Then, with the pin 25a in the proper position,
Is inserted into the long hole 26a and the tightening nut 87 is tightened, so that the relationship between the pin 25a and the long hole 26a is properly adjusted, whereby the raising hydraulic pressure is easily adjusted.
Further, by rotating a bolt 95 provided on the first lug 26b of the second plate 26, the relative positional relationship between the first plate 23 and the second plate 26 is adjusted. The relation of the hydraulic pressure switching valve 10, that is, the neutral position in the automatic range is adjusted. Then, the lower hydraulic pressure adjusting section 27, the raising hydraulic pressure adjusting section 29, the automatic adjusting section 95, and the first and second interchange mechanisms 21a, 22, 26 are further provided.
Since the a and 25a are all arranged on the left side of the machine body 4, the above-described interrelated adjustment can be easily performed by the operator on the left side of the machine body.

The relationship between the planting clutch lever 2 and the planting clutch 1 is adjusted by moving the nut 79 with respect to the rod 15. As a result, the distance between the clutch operating portion 1a of the rod 15 and the lug 14a of the first arm is changed to adjust the clutch engagement position. At this time, the rod 15 is moved from the rod 13 in the hydraulic control direction. Since it is located on the downstream side after branching to the transmitting link systems 14, 65, 70, there is no effect on the hydraulic control system by adjusting the above-described planting clutch engagement position. To adjust the relationship between the traveling clutch lever 5 and the traveling clutch 3, the nut 88
This is done by changing the length of zero. Also in this case,
Since the rod 20 is located further downstream of the plate 17 from which the transmission in the hydraulic control direction is branched from the rod 16, the above-described adjustment of the traveling clutch engagement position does not affect the hydraulic control system at all.

Although the above embodiment has been described with reference to the walking type rice transplanter, the present invention is not limited to this and can be similarly applied to other paddy working machines such as a paddy submerged direct sowing machine.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an operating device for elevating a body according to the present invention.

FIG. 2 is a side view showing the entire walking type rice transplanter to which the present invention can be applied.

FIG. 3 is a perspective view showing the whole of the walking rice transplanter.

FIG. 4 is a side view showing an operating device for elevating the body of the traveling rice transplanter.

FIG. 5 is a plan view thereof.

FIG. 6 is a sectional view showing the connecting shaft portion.

[Description of Signs] 1 Work clutch (planting clutch arm) 2 First operating lever (planting clutch lever) 3 Running clutch 4 Airframe 5 Second operating lever (running clutch lever) 6 Swing member (chain case) 7 Paddy field Wheel 9 Hydraulic actuator (hydraulic cylinder) 10 Switching valve 10a Operation unit 11 Aircraft height detecting mechanism (float) 12 Aircraft height detecting mechanism (sensing rod) 13, 14, 15 Work clutch system connecting means (rod, first arm) , Rod) 16, 17, 19, 20 traveling clutch system connecting means (rod, plate, arm, rod) 21 connecting plate 21a, 22, 23 first accommodation mechanism (long hole, rod, first plate) 25 plate 26 second plate 25a, 26a second accommodating mechanism (pin, long hole) 27 lower side hydraulic adjustment Adjusting unit 29 Raising oil pressure adjusting unit P Walking type mobile agricultural machine for paddy fields (walking type rice transplanter)

Claims (1)

(57) [Scope of request for utility model registration] A paddle wheel is provided on a swinging member which is provided with a first operating lever connected to a work clutch and a second operating lever connected to a traveling clutch, and is swingably supported by an airframe. The swing member is connected to a hydraulic actuator, and a switching valve communicating with the hydraulic actuator is connected to a body height detecting mechanism so that the switching valve can be switched to automatically control the body height. The operation unit and the first operation lever of the work clutch are arranged on one of the right and left sides of the body, and the operation unit and the first operation lever of the work clutch are connected to each other. A work clutch system connecting means is arranged, and an operation unit and a second operation lever of the traveling clutch are arranged on the other of the left and right sides of the machine body. The running clutch system connecting means for connecting the operation lever is disposed, the switching valve, connecting shaft及extending in the lateral direction of the machine body
Together through the beauty first flexible mechanism cooperating said working clutch system connecting means, via the coupling shaft and the second flexible mechanism conjunction said traveling clutch system coupling means and the said connecting shaft switching valve arranged near the further to the left or right one side of the machine body, the working clutch system connecting means and down side hydraulic pressure adjuster and the running clutch system connecting means and the second for adjusting the relationship between the first flexible mechanism An operating device for a walking-type mobile agricultural machine for paddy fields, comprising a raising hydraulic pressure adjustment unit for adjusting a relationship with the accommodation mechanism.