JPH0411457Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a device for adjusting the body inclination of a self-propelled transplanter for transplanting tobacco seedlings and the like.

BACKGROUND ART Conventionally, there have been four-wheeled self-propelled transplanting machines for transplanting tobacco seedlings and the like. When such a transplanter is run along a contour line on a slope, the machine body tilts, making it impossible to form transplant holes and transplant seedlings in a vertical position. Therefore, the aircraft is maintained in a horizontal state by moving the wheels on the valley side downward or moving the wheels on the mountain side upward.
The means for moving this wheel in the vertical direction is to rotate the drive wheel in the vertical direction together with the transmission case around the axis of the axle of the transmission case.
It is common to fix in stages using pin holes or the like. Note that the driven wheel on the same side is moved up and down integrally with the driving wheel by a parallelogram link mechanism or the like. Another method is to move one of the left and right drive wheels upward and the other downward by operating the left and right drive wheels via a wire or the like. Still another means is to move the drive wheels up and down by expanding and contracting a hydraulic cylinder or the like.

Problems to be solved by the invention For items that are fixed in position using pin holes, etc.
Since the fixing position is set in stages, it may not be possible to fix the product at the optimum position depending on the tilt state. Further, since vertical movement and position fixing are performed manually, it is time consuming and cannot be adjusted by elderly people or women who are weak. Those that use wires or the like have a complicated structure, and since the wires are arranged on both the left and right sides of the fuselage, a compact design cannot be achieved and the appearance is poor. If a hydraulic cylinder or the like is used, in order to widen the adjustment range, a large hydraulic cylinder with a large amount of expansion and contraction must be used, making it impossible to reduce the size and weight of the aircraft body.

This idea was devised in view of these points, and it has a simple structure and can move the driving wheels up and down together with the driven wheels on the same side by simple operation, thereby maintaining the horizontal state of the aircraft even on slopes. The purpose is to obtain a device for adjusting the body inclination of a traveling transplanter.

Means for Solving the Problems In a self-propelled transplanting machine for a four-wheeled vehicle body, at least one of the left and right driving wheels 9, 10 can be moved vertically and fixed at any position together with the driven wheels 12, 13 on the same side. establish. A telescopic member 20 for vertically moving drive wheels 9 and 10 is provided on the body 1 of the transplanting machine,
Amplification link 1 for amplifying the amount of expansion and contraction in the expansion and contraction member 20
Connect 8.

Operation By expanding and contracting the telescopic member 20, the driving wheels 9, 10 are moved up and down together with the driven wheels 12, 13 on the same side, the inclination of the body 1 is adjusted, and the body 1 is maintained in a horizontal state in the horizontal direction. In addition, the elastic member 2
The amount of expansion/contraction of 0 is amplified by the amplification link 18 to increase the adjustment range.

Embodiment An embodiment of this invention will be described based on the drawings. Engine 2 is installed at the front of body 1 of the self-propelled transplanter.
is mounted, and a transmission case 3 is fixed to a chassis 4 approximately in the center of the aircraft body 1. An axle 5 extending in the left-right direction is provided at the lower end of the transmission case 3, and a pair of left and right transmission cases 6, 7 are connected to both ends of the axle 5 so as to be rotatable around the axis of the axle 5. ing. A rotating shaft 8 is rotatably held at the lower ends of the transmission cases 6 and 7.
A sprocket, a chain, etc. for transmitting power from the wheel 5 to the rotating shaft 8 are housed inside the wheel 7. Rear wheels 9 and 10, which are drive wheels, are connected to the tip of the rotating shaft 8. the transmission case 6,
A front wheel mechanism section 11 extending forward is connected to each of 7, and at the tip of the front wheel mechanism section 11 are front wheels 12 and 13, which are driven wheels that move up and down as the transmission cases 6 and 7 rotate. connected.

Next, an adjustment tube 14 having a horizontal axis is attached to the chassis 4 so as to be rotatable about the axis. An inclination adjustment lever 15 is connected to one end of the adjustment tube 14 so as to be adjustable in position along the axial direction of the adjustment tube 14 . A projection piece 17 that projects toward the rear of the body 1 is fixed to the boss portion 16 of the inclination adjustment lever 15, and an amplification link 18 is rotatably connected to the tip of the projection piece 17 by a pin 19. One end of a hydraulic cylinder 20, which is a telescopic member, is rotatably connected to the upper end of the inclination adjustment lever 15 by a pin 21, and the other end of the hydraulic cylinder 20 is connected to the amplification link 1 by a pin 22.
It is rotatably connected to 8. Further, one end of a connecting rod 23 is rotatably connected to the amplification link 18 by a pin 24, and the other end of the connecting rod 23 is rotatably connected to the transmission case 6 by a pin 25.

An adjustment lever 2 is provided at the other end of the adjustment tube 14.
6 are connected along the axial direction of the adjustment tube 14 so as to be freely adjustable in position. One end of a connecting rod 27 is rotatably connected to the tip of the adjustment lever 26 by a pin 28, and the other end of the connecting rod 27 is rotatably connected to the transmission case 7 by a pin 29. A lever 30 is fixed to a portion of the adjustment tube 14 near the center. One end of a hydraulic cylinder 31 is rotatably connected to the tip of the lever 30 by a pin 32, and the other end of the hydraulic cylinder 31 is connected to the chassis 4.
It is connected to a mounting shaft 33 fixed to.

A hydraulic pump 34 is fixed to the chassis 4, and a hydraulic pipe (not shown) is connected from the hydraulic pump 34.
is connected to the hydraulic cylinders 20, 3 via the valve 35.
Connected to 1. Note that the hydraulic pump 34
and the engine 2 are connected via a V-belt 36, and the valve 35 is provided with an operating lever 37 for switching the valve.

A seedling stand 38 is fixed to the upper part and both sides of the mission case 3, and a rotary pot 39 is provided at the rear of the chassis 4. A transplant opening device 40 is provided below the rotary pot 39 and is moved up and down by the driving force from the engine 2 to transplant seedlings. Further, a handle 41 is provided at the rear of the body 1 to which a clutch lever, an accelerator lever, a side clutch lever, etc. (not shown) are attached.

In such a configuration, an operator throws seedlings from the seedling stand 38 into each pot of the rotary pot 39 while moving the machine body 1. The rotary pot 39 is rotated by the driving force from the engine 2, and the transplant hole opener 40 is moved up and down to transplant the seedlings in the pot to the ridges at predetermined intervals.

Here, when the machine body 1 is run along a contour line on a slope, the machine body 1 is maintained in a horizontal state by moving the rear wheels 9 and front wheels 12 up and down, and the work is performed. For example, when the rear wheel 9 is located on the valley side, the hydraulic cylinder 20 is extended by operating the operating lever 37. When the hydraulic cylinder 20 extends, the amplification link 18 rotates downward (in the direction of arrow a) about the pin 19, and moves the connecting rod 23 downward. The downward movement of the connecting rod 23 causes the transmission case 6 to rotate downward about the axis of the axle 5, and the rear wheel 9 to move downward. Furthermore, as the transmission case 6 rotates downward, the front wheel mechanism section 11
The front wheels 12 connected to the fuselage 1 also move downward, and the downward movement of the rear wheels 9 and front wheels 12 on the valley side
is maintained horizontally. Therefore, even in transplanting work on a slope, the formation of transplant holes and the direction of transplanting of seedlings can be maintained in a vertical state. And a hydraulic cylinder 20 for moving the rear wheel 9 downward.
The elongation of the rear wheel 9 is amplified by the amplification link 18.
Therefore, even if a small and lightweight hydraulic cylinder 20 with a small amount of expansion/contraction is used, the vertical movement adjustment range of the rear wheel 9 can be increased, and the horizontal state of the machine body 1 can be easily maintained even in fields with a large inclination angle. . Note that when the rear wheel 9 is located on the mountain side, the hydraulic cylinder 20 is retracted by operating the operating lever 37,
By rotating the amplifying link 18 upwardly (in the direction of arrow b) about the pin 19 and rotating the transmission case 6 upwardly around the axis of the axle 5 via the connecting rod 23, the rear wheel 9 and the front wheel are rotated. 12 upward and maintain the aircraft 1 in a horizontal state.

Next, when adjusting the transplanting depth of seedlings, it is necessary to move the entire machine body 1 up and down. Operation lever 3
7 to extend the hydraulic cylinder 31, the lever 30 rotates together with the adjustment tube 14 in the direction of arrow c around the axis of the adjustment tube 14, and at the same time the adjustment lever 26
And the inclination adjustment lever 15 rotates in the same manner. This rotational movement causes the left transmission race 7 to connect to the connecting rod 27.
and the right transmission case 6 rotates downward around the axis of the axle 5 via the hydraulic cylinder 20, the amplification link 18, and the connecting rod 23, and the right and left rear wheels 9,
10 moves downward, and the left and right front wheels 12 and 13 also move downward via the front wheel mechanism section 11. Therefore, the aircraft 1 is off the ground,
You can adjust the transplanting depth of seedlings to be shallower. In addition,
By contracting the hydraulic cylinder 31, the left and right transmission cases 6, 7 can be rotated upward around the axis of the axle 5, and the machine body 1 can be brought closer to the ground to increase the depth of transplanting the seedlings. .

Further, by simultaneously moving the machine body 1 up and down using the hydraulic cylinder 31 and adjusting the horizontal inclination of the machine body 1 using the hydraulic cylinder 20, it is possible to simultaneously adjust the transplant depth and the transplant direction. Since these adjustments can be easily made by switching the operating lever 37, the labor of the operator can be reduced and the operator can concentrate on driving operations and supplying seedlings, thereby further improving work accuracy.

In addition, in this embodiment, pins 19, 22, 2 serving as rotational fulcrums are provided at each vertex of the amplification link 18.
Although a triangular plate-like member provided with 4 is used, an L-shaped member may be used instead. Further, although the hydraulic cylinder 20 is used as the telescopic member, an electric reversible motor may be used instead. Alternatively, an electric reversible motor may be used for the hydraulic cylinder 31 as well. Furthermore, in this embodiment, a hydraulic cylinder 20 and an amplification link 18 are used to adjust the left and right tilt of the aircraft body 1.
etc. are provided only on one side of the fuselage 1, but a wider adjustment range can be obtained by providing similar components on the other side of the fuselage 1 and allowing them to perform mutually opposing expansion/contraction and rotational operations.

Effects of the invention This invention allows at least one of the left and right driving wheels to move up and down together with the driven wheel on the same side by expanding and contracting the telescopic member as described above, thereby adjusting the left and right inclination of the aircraft and moving it on slopes. It is possible to maintain the horizontal state of the machine body during the process, and therefore it is possible to maintain the transplanting of seedlings in a vertical state and improve work accuracy. As a result, even when using a small and lightweight telescopic member with a small amount of expansion and contraction, it is possible to increase the amount of vertical movement of the drive wheels, etc., and the tilt adjustment range of the aircraft body can be widened.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a right side view, Figure 2 is a left side view, Figure 3 is a rear view, Figure 4 is a right side view showing the right rear wheel and front wheel moved downward, and Figure 5 is the rear view. figure,
FIG. 6 shows the hydraulic cylinder and the amplification link, in which a is a standard state, b is a state in which the hydraulic cylinder is extended, and c is a state in which the hydraulic cylinder is retracted. 1... Airframe, 9, 10... Rear wheel (drive wheel), 1
2, 13...Front wheel (driven wheel), 18...Amplification link, 20...Hydraulic cylinder (extensible member).

Claims (1)

[Scope of utility model registration request] In a self-propelled transplanting machine for a four-wheeled vehicle body, at least one drive wheel on either the left or right side is provided to be movable in the vertical direction and fixed at any position together with a driven wheel on the same side, and the drive wheel is mounted on the body of the transplantation machine in the vertical direction. 1. An apparatus for adjusting body inclination of a self-propelled transplanter, characterized in that a telescoping member is provided, and an amplification link for amplifying the amount of expansion and contraction of the telescoping member is connected to the telescoping member.