JP2969756B2 - Seedling machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a four-wheeled seedling planter.

[Conventional technology]

Conventionally, in a four-wheeled seedling machine that performs seedling planting work in the field, the left front wheel and the rear wheel are linked to drive up and down, and the right front and rear wheels are linked to drive up and down. There is known a seedling transplanter in which the left and right front and rear wheels are driven up and down to different heights, and the four wheels are driven up and down in the same direction.

[Problems to be solved by the invention]

When the height of the body fluctuates with respect to the field scene to be transplanted, the conventional machine can correct the planting depth of the seedling by driving up and down the four wheels together in the same direction, and In the case of tilting left and right, the left and right front and rear wheels are driven up and down so that they are at different heights from the left and right other front and rear wheels. Can be attached.

By the way, in the conventional machine described above, when one of the four wheels passes through a partial unevenness such as a clod, one wheel is in a state of floating from the ground, and therefore, the vehicle body is in an appropriate posture. There is a problem that it cannot be stably supported and the planting posture of the seedlings is easily disturbed.

[Means for solving the problem]

In order to solve the above problems, the present invention has a pair of left and right wheels that are driven up and down in a direction substantially perpendicular to the body and driven up and down so as to have different heights in the left and right directions, and in a direction substantially perpendicular to the body. A seedling plant comprising a pair of left and right wheels that freely ascend and descend and freely ascend and descend so as to have different heights in the left and right directions, and the four wheels are driven up and down in the same direction in the up and down directions. It was a chance.

[Functions and Effects of the Invention]

This seedling planter can drive up and down all four wheels in the same direction up and down, so it can correct the aircraft to the proper height while maintaining the front and rear posture, and also drive up and down to different heights Since a pair of wheels are provided, the body can be corrected to an appropriate left-right posture. And, it is composed of wheels that are driven up and down and have different heights from left and right, and wheels that are freely raised and lowered and have heights that are different from right to left. Even if one of the four wheels passes through partial unevenness such as a clod, the four-wheel grounding state can be maintained, and the frequency of driving and lifting the wheels to correct the aircraft to the appropriate left and right attitude Therefore, the vehicle body can be stably supported in an appropriate posture. In addition, since the four-wheel grounded state is maintained and the four wheels are driven up and down in the same direction up and down, the aircraft can be corrected to the appropriate height without disturbing the left and right attitude of the aircraft, and a pair of left and right Since the wheels move up and down in a substantially vertical direction with respect to the aircraft, when the four wheels are driven up and down in the same direction up and down, it is difficult for the aircraft to shake laterally, and it is unlikely that the planting posture of the seedlings will be disturbed from side to side. . Therefore, a seedling can be planted with an appropriate depth and an appropriate posture by this seedling transplanter.

〔Example〕

 Next, an embodiment of the present invention will be described.

The engine 2 is fixed in front of the gear box 1.
The frames 3, 3 extend rearward from the left and right sides of the rear part of the vehicle, thereby forming an airframe 4.

Left and right wheel drive shafts 5, 5 project left and right from gear box 1,
The ends of a pair of transmission cases 6, 6 are attached to the shafts 5, 5 so that they can move laterally. A pair of metal 7,7
Are rotatably mounted on the gear box 1 inside the transmission cases 6, 6 and, as shown in FIG. 2, the rods 8, 8, which extend laterally from the rear end thereof, are passed through the transmission cases 6, 6, and move laterally. The transmission case 6, 6 is made to be stopped by the pin 9, 9. Front axles 10, 10 are attached to lower ends of the transmission cases 6, 6, and front wheels 11, 11 are fixed thereto. Sprockets 12, 13 are fixed to the wheel drive shafts 5, 5 and the front axles 10, 10 in the transmission cases 6, 6, respectively, and a chain 14 is wound around the sprockets.

Metals 16, 16 are rotatably mounted on both ends of a horizontal shaft 15 fixed to the rear part of the frames 3, 3, so that the horizontal bars 17, 17 are laterally moved to the metals 16, 16 and fixed with bolts. Passed through. A pair of arms 18, 18 extend rearward from the outer ends of the horizontal bars 17, 17, and rear wheels 19, 19 are provided at the rear ends.

A cylinder 20 is provided at the center of the body 4 so as to face forward and backward, and a rod 21 protruding rearward is configured to enter and exit when pressure oil is taken in and out. A connecting tool 22 is provided at the rear end of the rod 21. The connector 22 is attached so that a cushion is provided by a spring (not shown).

The middle of the center rod 23 is fixed to the connecting member 22, and the right metal 7
The tip of the lever 7a extending upward from the right end of the central rod 23 is connected by a horizontal rod. The left horizontal rod is composed of a cylinder 26 and a rod 27 extending rearward from the cylinder 26. Both ends are connected to the tip of a lever 7a extending upward from the left metal 7 and the left end of the central rod 23.

That is, the front wheels 11, 11 are connected by the central rod 23, the lateral rod 25 connected to the left and right thereof, the cylinder 26, and the rod 27.

The middle part of the central rod 28 is pivotally attached to the connector 22 with the pin 24, and both ends thereof are bent downward, and each end is
The levers 16a, 16a of 16, 16 are connected by horizontal rods 29, 29.

That is, the left and right rear wheels 19, 19 are connected in a gate shape by the center rod 28 and the left and right horizontal rods 29, 29.

As shown in FIG. 1, a plate-shaped height detector 30 that slides on the upper surface of the ridge pivots around a horizontal axis 31 in the lower part of the center of the fuselage 4,
The end is provided to move up and down. A weight type tilt detector 32 is rotatably mounted on a shaft 33 extending forward and backward beside the body 4.

As shown in FIG. 3, the pump 34 is provided so as to be driven by the engine 2, and the pressure oil discharged from the pump 34
After splitting into two at 35. One is connected to the cylinder 20 through the valve box 36, and the other is supplied to the cylinder 26 through the valve box 37. A valve 38 is provided in the valve box 36, and the valve 38 is connected to the height detector 30 by a rod 39. When the end of the detector 30 is in a predetermined position, the valve 38 is in a neutral position. , The pressure oil discharged by the pump 34
Send back to 40. When the end of the height detector 30 is lowered, the valve 38 moves to the right, the pressure oil enters the right chamber of the cylinder 20, the oil in the left chamber returns to the tank 40, and the rod 21 is returned into the cylinder 20.
Also, when the end of the height detector 30 rises, the valve 38 moves to the left,
Pressure oil enters the left chamber of cylinder 20 and oil in the right chamber
And the rod 21 is configured to protrude.

A valve 41 is provided in the valve box 37 and connected to the tilt detector 32. When the tilt detector 32 is perpendicular to the machine body 4, the valve 41 is in the neutral position, and returns the pressure oil discharged by the pump 34 to the tank 40. When the inclination detector 32 approaches the right side of the aircraft 4 (the aircraft 4 inclines downward right), the valve 41 moves to the right,
Pressure oil enters the left chamber of the cylinder 26 and oil in the right chamber
And the rod 27 protrudes. When the body leans to the left, the valve 41 moves to the left, pressure oil enters the right chamber of the cylinder 26, oil in the left chamber returns to the tank 40, and the rod 27
It is configured to return within 26.

The valve 38 is configured to be operated manually, and the weight type tilt detector 32 is configured to be stopped at a neutral position by the pin 42.

 In the figure, reference numeral 43 denotes a seedling mounting table, and reference numeral 44 denotes a seedling planting rod.

The seedling planting machine configured as described above is placed on a field so that the left and right wheels straddle the ridge, and the body 4 is supported on the ground by the front wheels 11, 11 and the rear wheels 19, 19. The front wheels 11, 11 are driven forward by the engine 2, and the tip of the seedling rod 44 turns in an egg-shaped orbit in side view, so that the seedlings on the seedling mounting table 43 are taken out and transplanted to the ridges.

Then, according to the height of the ridge, the end of the height detector 30 is set on the horizontal axis.
Although it turns around 31 and moves up and down, for example, when its end approaches the body 4 side beyond a certain limit (the body 4 goes down too much and the seedlings try to deeply plant), the rod 39 Move valve 38 to the left. Then, one pressure oil discharged from the pump 34 and divided by the flow dividing valve 35 enters the left chamber of the cylinder 20, the oil in the right chamber returns to the tank 40, and the rod 21 is pushed out later,
The center rod 23 pulls the horizontal rod 25 and the cylinder 26 backward, and the lever
7a, 7a draws the transmission case 6, 6 clockwise in FIG.
The front wheels 11, 11 go down. Further, the rod 21 pushes the central rod 28 backward, the horizontal rods 29, 29 push the repellers 16a, 16a clockwise, and the arms 18, 18 rotate around the horizontal axis 15 to rotate the rear wheels 19, 19.
Goes down. As a result, the airframe 4 is lifted, and the distance from the upper surface of the ridge is corrected.

When the end of the height detector 30 is lowered and largely separated from the body 4, each wheel moves in the opposite direction, and the body 4 is lowered. The operation is the reverse of the above-described operation, and the description is substantially the same, so that the description is omitted.

Next, when the field is tilted in the horizontal direction, the body 4 tilts in the horizontal direction. When the inclination exceeds the limit and inclines, for example, to the right, the inclination detector 32 moves the valve 41 to the right. Then
The other pressure oil discharged from the pump 34 and divided by the flow dividing valve 35 enters the left chamber of the cylinder 26, the oil in the right chamber returns to the tank 40, the rod 27 projects, and the left repeller 7a moves counterclockwise. Turning, the left transmission case 6 rotates in the same direction around the wheel drive shaft 5 to raise the left front wheel 11, and the lateral inclination of the body 4 is corrected. At this time, the center rod 28 rotates clockwise around the pin 24 when viewed from above, the left and right levers 16a, 16a rotate counterclockwise and clockwise, respectively, and the left and right rear wheels 19, 19 move up and down. , Its lower end touches the ground.

Conversely, when the body 4 is tilted leftward, the tilt is corrected in the same manner as described above.

Similarly, when the ground is tilted to be twisted, each wheel contacts the ground while the body 4 is kept horizontal.

As described above, this seedling transplanter is driven up and down in a substantially vertical direction with respect to the body 4, and a pair of left and right wheels 11, 11 which is driven up and down so as to have different heights in the left and right directions. A pair of left and right wheels 19, 19, which freely ascend and descend in the direction and freely ascend and descend so as to have different heights in the left and right directions, constitute a four-wheel configuration, and drive the four wheels 11, 11, 19, 19 together in the same vertical direction. It is configured to move up and down.

Therefore, this seedling planter can drive up and down all four wheels in the same direction up and down, so that it can correct the body to the proper height while maintaining the front and rear posture, and drive up and down so that the right and left are different heights Since the vehicle has a pair of left and right wheels, the body can be corrected to an appropriate left and right posture. And, it is composed of wheels that are driven up and down and have different heights from left and right, and wheels that are freely raised and lowered and have heights that are different from right to left. Even if one of the four wheels passes through partial unevenness such as a clod, the four-wheel grounding state can be maintained, and the frequency of driving and lifting the wheels to correct the aircraft to the appropriate left and right attitude Therefore, the vehicle body can be stably supported in an appropriate posture. In addition, since the four-wheel grounded state is maintained and the four wheels are driven up and down in the same direction up and down, the aircraft can be corrected to the appropriate height without disturbing the left and right attitude of the aircraft, and a pair of left and right Since the wheels move up and down in a substantially vertical direction with respect to the body, when the four wheels are driven up and down in the same direction up and down, lateral shake of the body hardly occurs.
It is also unlikely that the planting posture of the seedlings is disturbed from side to side. Therefore, a seedling can be planted with an appropriate depth and an appropriate posture by this seedling transplanter.

[Brief description of the drawings]

1 is a side view of a seedling plant to which the present invention has been applied, FIG. 2 is a plan view of a part of the seedling plant with a front wheel lateral moving device added thereto, and FIG. 3 is an arrangement of each mechanism. FIG. The symbols in the figure are as follows. 4… Aircraft 11,11… Front wheels 19,19 …… Rear wheels

Continuation of the front page (72) Inventor Norihiro Yano 1-Yachikura, Tobe-cho, Iyo-gun, Ehime Pref. 62-275607 (JP, A) JP-A-56-29909 (JP, A) JP-A-58-16008 (JP, U) JP-A-63-78517 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01C 11/02 A01B 51/02 B62D 55/116

Claims (1)

(57) [Claims] 1. A pair of left and right wheels which are driven up and down in a direction substantially perpendicular to the body and are driven up and down so as to have different heights in the right and left directions, and are freely raised and lowered in a direction substantially perpendicular to the body and have different heights in the left and right directions. A seedling machine characterized in that it has a four-wheel configuration including a pair of left and right wheels that freely ascends and descends, and that the four wheels are driven up and down in the same direction up and down.