JP2003325010A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter having improved turning performance in the case of lifting the front part of the transplanter and turning with rear wheels as the fulcrum. <P>SOLUTION: The transplanter is provided with a traveling body 2 supported with pairs of front and rear wheels 3, 4 in a movable manner and having a transplanting apparatus to plant seedlings. Each of the front and rear wheels 3, 4 at the right and left sides is attached to the lower end of wheel supporting members 50, 55 and the upper end of the supporting member is supported by the traveling body 2 in a manner freely rotatable around a lateral shaft. The traveling body 2 is lifted and lowered by turning the wheel supporting members 50, 55 around the rotation shaft. In the case of turning the transplanter 1 with the rear wheels 4 as the fulcrum by depressing a handle 8 at the rear end of the traveling body and lifting the front part of the transplanter 1, the wheel supporting member 50 supporting the rear wheels 4 is made to be tiltable from the forward tilting posture in the planting work to the posture nearly perpendicular to the ground plane. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanter for planting seedlings while running along ridges.

[0002]

2. Description of the Related Art As a transplanter, a traveling machine body supported by a pair of front and rear wheels is movably supported, and the traveling machine body supports an engine and a transplanting device for planting seedlings in a field, and There is one that has a handle on the rear end side so that seedlings can be planted while running along the ridges. In this transplanter, the front and rear wheels are provided at the lower ends of the wheel supports whose upper ends are rotatably supported by the traveling machine body about the left-right axis, and the wheel supports are used as rotating shafts. The traveling body can be raised and lowered by swinging about the center.

Further, in this transplanter, when turning in a headland or the like, the handle at the rear end of the traveling machine body is pushed down and the front part of the transplanter is lifted and swung with the rear wheel as a fulcrum. ing. Some of the transplanters are provided with a water storage tank for storing water for irrigating the seedlings, and the water storage tanks are provided on one side in front of and behind the transplanter.

[0004]

In the above-mentioned conventional transplanter, if the weight of the transplanter is heavy, a large force is required to push down the handle at the time of turning, and the handling (handling) at the time of turning is required. There was a problem of difficulty. Also, in the case where a water tank is provided on the front and rear sides of the transplanter, when the water tank is full, the weight on the side where the water tank is placed becomes heavy, and the transplanter is handled during turning. There is a problem that it is difficult to lift (if the front part of the transplanter becomes heavier, it will be difficult to lift the front part of the transplanter, and if the rear part of the transplanter becomes heavier, the handle will be lifted when the front part of the transplanter is lifted. Since the load in the pulling down direction becomes large, the load must be supported).

In the case where a water tank is provided on the front and rear sides of the transplanter, if the rear wheel position at the time of turning is determined in consideration of the weight when the water tank is full, the water in the water tank is determined. In the present invention, in view of the above-mentioned problems, the rear wheel is used as a fulcrum before the transplanter. An object of the present invention is to provide a transplanter intended to improve swivelability when a part is lifted and swiveled.

[0006]

Means for Solving the Problems Technical means taken by the present invention to solve the technical problems are movably supported by a pair of left and right front wheels, and equipped with a transplanting device for planting seedlings. The left and right front and rear wheels are provided on the lower ends of the wheel supports whose upper ends are rotatably supported around the axis of the left and right direction with respect to the running machine, and rotate the wheel supports. The traveling body can be raised and lowered by swinging around the axis, and the rear wheel is supported when the front part of the transplanter is lifted and swung with the rear wheel as a fulcrum by pushing down the handle provided at the rear part of the traveling body. It is characterized in that the wheel support is swingable from a forward tilted posture during the planting work to a posture substantially perpendicular to the ground contact surface.

Another technical means is to support a transplanting device for planting seedlings in the front part of a traveling machine body supported by a pair of front and rear wheels so that the engine can be supported in the rear part of the traveling machine body. A seat for the transplant operator to sit between the transplantation device and the engine of the aircraft is provided, and a handle is provided at the rear end side of the traveling aircraft.For each of the left and right front and rear wheels, the upper end side is around the axis of the traveling aircraft in the left-right direction. It is provided on the lower end side of the wheel support rotatably supported on the wheel support, and the traveling machine can be moved up and down by swinging the wheel support around the rotation axis.
When pushing down the handle and lifting the front part of the transplanter with the rear wheel as a fulcrum and turning, the wheel support that supports the rear wheel,
The feature is that it can swing from the forward leaning posture during the planting work until the rear wheels are located below the seat.

Another technical means is to support a transplanting device for planting seedlings in the front part of a traveling machine body supported by a pair of front and rear wheels, and to support an engine in the rear part of the traveling machine body. A seat for the transplant operator to sit between the transplantation device and the engine of the aircraft is provided, and a handle is provided at the rear end side of the traveling aircraft.For each of the left and right front and rear wheels, the upper end side is around the axis of the traveling aircraft in the left-right direction. It is provided on the lower end side of the wheel support rotatably supported on the wheel support, and the traveling machine can be moved up and down by swinging the wheel support around the rotation axis.
When pushing down the handle and lifting the front part of the transplanter with the rear wheel as a fulcrum and turning, the wheel support that supports the rear wheel,
It is characterized in that the rear wheel can be swung from the forward leaning posture during the planting work to the posture in which the rear wheel is located below the seat and is substantially vertical to the ground contact surface.

Further, another technical means comprises a traveling machine body movably supported by a pair of left and right front and rear wheels, and an engine, a transplanting device for planting seedlings on the traveling machine body,
It supports a pair of front and rear water storage tanks that store water for irrigating seedlings, and has a handle on the rear end side of the traveling machine body. It is provided on the lower end side of a wheel support rotatably supported around it, and the traveling machine body can be raised and lowered by swinging the wheel support around the rotation axis, and the rear wheel is pushed down by pushing down the handle. When raising and turning the front part of the transplanter with the fulcrum as a fulcrum, one water storage tank is arranged on the front side of the rear wheel position, and the other water storage tank is arranged on the rear side of the rear wheel position. The feature is that water is supplied from the water storage tank at the same time.

Further, the wheel support for supporting the rear wheels is made swingable by a fluid pressure cylinder, and the wheel support is swingable further forward from a state perpendicular to the ground contact surface. Is good.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 is a transplanting machine for planting seedlings such as onions in the ridge while traveling along the ridge. The transplanter 1 includes a traveling body 2 and the traveling body 2
It is equipped with a pair of left and right front and rear wheels 3 and 4 for movably supporting the plant, a transplanting device 5 for planting seedlings in the ridges, and a seat 6 for a transplant operator to sit on.

The traveling machine body 2 is constructed by combining a frame material such as a pipe material, a grooved steel, and an angle. A transplanting device 5 is mounted on a front portion of the traveling machine body 2 and an engine is provided on a rear portion of the traveling machine body 2. E and a mission case M are mounted, a seat 6 is provided between the transplant device 5 and the engine E of the traveling machine body 2, and a handle 8 extending rearward is provided on the rear end side of the traveling machine body 2. ing. A fuel tank is provided above the engine E. Left and right front wheels 3,4
Is attached to the traveling machine body 2 relative to the traveling machine body 2 via an elevating mechanism 9 (see FIGS. 6 and 7), and the left and right front wheels 3, 4 are interlocked with the traveling machine body 2. By raising and lowering the four wheels at the same time, the traveling machine body 2 can be raised and lowered with respect to the ground contact surface (the height can be adjusted).

As shown in FIGS. 3 and 4, the transplanting device 5 includes a planting mechanism 11 for planting seedlings in a ridge, a seedling feeding mechanism 12 for feeding seedlings to the planting mechanism 11, and a soil cover ring 13. A pair of left and right planting units are provided. In the present embodiment, the left and right planting units are arranged on one side (left side) from the center in the left-right direction of the traveling machine body 2 so that four rows can be planted by reciprocating the ridges. It is configured. Further, on the upper side of the traveling machine body 2, on the outer side in the left-right direction of each seedling supply mechanism 12, there is provided a seedling placing table 15 on which a seedling box 14 containing a seedling to be planted is placed.

As shown in FIGS. 3 and 4, the planting mechanism 11
The plant 16 includes a plant 16, a parallel link 17 that supports the plant 16 so that the plant 16 can move up and down, and an operating mechanism 18 that operates the parallel link 17. The planting body 16 is provided with a cylindrical body 19 having upper and lower openings in the upper part and a planting cup 20 which can be opened and closed back and forth in the lower part, and seedlings are supplied from above with the planting cup 20 closed. Then, the seedling is a cylinder 19
Is held in the planting cup 20 through the
When 0 is opened, seedlings are configured to be released downward.

The parallel links 17 are a pair of upper and lower links 17.
Each of the links 17A and 17B has a front end side rotatably supported by a support body 22 fixed to the traveling machine body 2 via a pivot about the axis in the left-right direction. The plant 16 is attached to the end side,
As the parallel link 17 swings up and down about the pivot, the plant 16 is moved up and down. The operating mechanism 18 for operating the parallel link 17 is composed of a crank mechanism, and a crankshaft 23 rotatably supported by the traveling machine body 2 about an axis in the left-right direction, and the crankshaft 2.
The crank arm 24 extends radially outward from the crank arm 3 and the crank pin 25 provided on the protruding end side of the crank arm 24.

A cylinder 26 is rotatably fitted on the crank pin 25, and an upper end of an interlocking arm (not shown) is fixed to the cylinder 26. The lower end of the interlocking arm is a parallel link. The link 17 is pivotally attached to the upper link 17A of the reference numeral 17 and is configured so that the parallel link 17 swings up and down to raise and lower the planting body 16 by rotationally driving the crankshaft 23. In this embodiment, when the crankshaft 23 is rotated once, the plant body 16 reciprocates up and down once.

The planting body 16 is supplied with seedlings from the seedling feeding mechanism 12 at the seedling receiving position at the upper end of the movement locus, and the planting cup 20 is closed at this seedling receiving position. The seedlings are held in the attached cup 20. After that, the planting body 16 descends and the lower part of the planting cup 20 projects into the ridge, and when the lower part of the planting cup 20 projects into the ridge, the planting cup 20 opens back and forth to form a planting hole in the ridge. At the same time, the seedlings are dropped and released into the planting holes so that the seedlings can be planted in the ridges.

Thereafter, the planting body 16 is constructed so that, while the planting cup 20 remains open, the planting body 16 rises to escape from the ridge and closes until the seedling receiving position is reached. By repeating the above operation while traveling, seedlings are successively planted in the ridges. In addition, the planting mechanism 11 is provided with a scraper 27 that removes dirt from the outer surface of the cup structure on the rear side of the planting cup 20. The soil-covering wheels 13 are arranged in a pair on the left and right on the rear side of each of the left and right planting bodies 16, and roll the upper surface of the ridge to press the roots of the seedlings discharged into the planting holes from both the left and right sides. Cover and suppress the root of the soil.

The seedling supplying mechanism 12 adopts a rotary pot system and is provided with a rotary table 30 provided with a plurality of pots 29 (seedling receiving portions) arranged in the circumferential direction. The rotary table 30 is provided so as to be rotatable around a vertical axis 31 fixed to the traveling machine body 2 in the vertical direction, and the pot 29 is
The seedlings are arranged (appropriately) one by one on the same circumference centered on the rotation axis of the rotary table 30 at intervals, and are transplanted into the pots 29 from above by the transplant operator. In the present embodiment, each pot 29 is provided with a guide cylinder 32 formed of a vertically open cylindrical body.

Each pot 29 is formed in an upper and lower opening shape and is provided on the rotary table 30 in a vertically penetrating manner, and a bottom lid for opening and closing the bottom portion (lower end opening) of the tubular body 33. The bottom lid 34 is openably and closably attached to the cylindrical body 33 so as to be rotatable about the horizontal axis, and is urged downward by a spring, that is, in the opening direction. A disc-shaped fixing plate (not shown) is attached and fixed to the traveling machine body 2 below the rotary table 30, and the bottom lid 34 of the pot 29 is fixed in the state where the bottom portion of the cylindrical body 33 is closed. By contacting the plate, its opening is regulated.

Further, a cutout portion is formed on the fixing plate at a position corresponding to the upper side of the plant 16 at the seedling receiving position, and the pot 29 is cut by the cutout portion during the rotation of the rotary table 30. When located at the position corresponding to the section, the bottom lid 34 is opened, and the seedlings inside the pot 29 are dropped and discharged downward to be dropped and supplied to the plant 16 at the seedling receiving position. When the pot 29 passes through the cutout portion, the bottom cover 34 is relatively pressed by the fixing plate to close the lower end opening of the cylindrical body 33 again.

Each of the left and right seedling supply mechanisms 12 is configured to drop and supply seedlings to the planting body 16 on the inner side in the left-right direction (opposite side in the left-right direction).
However, the left and right seedling feeding mechanisms 12 are arranged side by side so as to be closer to the center side in the left-right direction, and the left and right outer sides of the left and right planting mechanisms 11 are relatively large and vacant. . A seat 6 is provided behind each transplanting unit of the transplanting device 5.
Are provided, and a transplant worker can be boarded in each planting unit.

Further, the seat 6 is provided in front of and behind the transplanting device 5, and the seat 6 and the transplanting device 5 of the traveling machine body 2 are provided.
A floor board (step) 36 is provided on the lower side between and, and a peep window 37 is provided on the floor board 36 so that the planting state of seedlings can be monitored. This peep window 3
7 is formed in a mesh shape in the present embodiment,
The opening may be closed by a transparent plate, and in short, it is sufficient that the planting part can be seen from the upper side of the floor plate 36.

The confirmation of the planting part can be visually confirmed from the rear of the seat 6, but if the planting work is not progressed to some extent, the planting state cannot be known. If the planting depth is adjusted, the response will be delayed when the planting depth is adjusted. However, if the floor plate 36 is provided with the viewing window 37, the planting condition is poor in the early planting stage. However, there is an advantage that it can be detected early and can be dealt with immediately. As shown in FIGS. 4 and 5, the left and right seats 6 are supported by the support legs 40 supported by the traveling machine body 2.

The support leg 40 includes a vertical column portion 41,
It is formed in an L shape with an arm portion 42 extending horizontally rearward from the upper end of the column portion 41, and the lower end side of the column portion 41 is attached to a support cylinder 43 provided on the traveling machine body 2 side around the vertical axis. Is rotatably fitted to and supported by. A mounting cylinder 44 having a vertical axis is provided at the end of the arm 42, and a downwardly projecting support shaft 45 provided on the lower surface center side of the seat 6 is provided on the mounting cylinder 44. It is fitted and supported so as to be rotatable about an axis in the vertical direction.

Therefore, each of the left and right seats 6 has a support leg 4
It is swingable to the left and right around the axis of the support column 41 of 0, and is also changeable in direction around the axis of the mounting cylinder 44 (support shaft 45). The seat 6 is disposed below the seat 6 and above the cover member 46 that covers the devices and the mechanism, and
0 is housed in the cover member 46, the mounting cylinder 44 is projected upward through the arc-shaped guide groove 47 formed on the upper surface of the cover member 46, and the seats 6 on the left and right are in the range of the guide groove 47. It is possible to move left and right with.

In the present embodiment, one of the left and right seats 6 is configured to be movable from the rear position of the seedling feeding mechanism 12 to the rear position between the left and right seedling feeding mechanisms 12, and one person working (one person The work of supplying seedlings to the left and right seedling supply mechanism 12 is easy. For example, in the present embodiment, as shown in phantom lines in FIG.
Is movable from the rear position of the left seedling supply mechanism 12 to the rear position between the left and right seedling supply mechanisms 12, and the right seat 6 is a seat from the rear position of the right seedling supply mechanism 12 to the left seat. It can be moved left and right in the direction away from 6.

Further, in this embodiment, when the seat 6 moves left and right, the seat 6 moves in an arc shape, so that the front and rear position of the seat 6 also changes. It is also possible to adjust the front-back position. Therefore, the space between the transplant operator and the seedling supply mechanism 12 can be closed (adjusted) according to the body shape of the transplant operator. In addition, the positions of both the left and right seats 6 are the seedling supply mechanism 12
May be configured to be movable to a rear position between the left and right seedling supply mechanisms 12, and one seat 6 may be movable to a rear position between the left and right seedling supply mechanisms 12. The seat 6 on the other side may be fixed.

Further, at least one of the left and right seats 6 may be linearly adjustable in the left-right direction. Further, the left and right seats 6 may be linearly adjustable in the front-rear direction. As shown in FIGS. 1, 2, 6 and 7, the mission case M includes a cover member 46 under the seat 6.
It is located inside. On the left and right sides of the mission case M, support arms 51 are disposed below the left and right seats 6 in the left-right direction.
Is rotatably supported by a mission case M and a bearing 52 fixed to the traveling machine body 2 side around an axis in the left-right direction, and a transmission case (wheel support) is attached to outer ends of the left and right support arms 51 in the left-right direction. The upper part of the body 50 is attached and fixed, whereby the left and right transmission cases 50 are rotatably supported around the axis in the left-right direction with respect to the traveling machine body 2. The rear wheel 4 is attached to the lower portion so as to be rotatable around the axis in the left-right direction.

The rear wheels 4 are drive wheels which are rotationally driven by the power from the engine E. Further, on the front side of the traveling machine body 2, front wheel support shafts 53 arranged in the left-right direction are provided.
Is rotatably supported by a bearing 54 fixed to the traveling machine body 2 around the axis in the left-right direction. Front wheel support arms (wheel support bodies) are provided at both left and right ends of the front wheel support shaft 53.
The upper part of 55 is attached and fixed, whereby the left and right front wheel support arms 55 are supported rotatably around the axis in the left-right direction with respect to the traveling machine body 2, and the lower part of the front wheel support arm 55 is The front wheel 3 is attached rotatably around the axis in the left-right direction.

Then, the transmission case 50 and the front wheel support arm 55 are connected to the support arm 51, by the lift cylinder 56 composed of a fluid pressure cylinder such as a hydraulic cylinder.
The traveling machine body 2 is configured to move up and down with respect to the ground contact surface by rotating the front wheel support shaft 53 about its axis. A hydraulic pump P, which is driven by the engine E and supplies pressure oil to the lifting cylinder 56, is provided to the side of the engine E.
Is arranged, and a lifting cylinder 56 is arranged in the front-rear direction on the side of the hydraulic pump P.

The hydraulic pump P is driven by power being transmitted from the output shaft of the engine E by a belt winding transmission mechanism, so that the hydraulic pump P can be driven even when traveling is stopped. It has become. On the front side of the lifting cylinder 56 and on the rear side of the left and right support arms 51, a rotation shaft 57 is arranged in parallel with the support arm 51, and the rotation shaft 57 is rotatable around the horizontal axis of the traveling machine body 2. Supported by. A bracket 58 is provided on the rotating shaft 57 so as to project outward in the radial direction.
The tip end side of the piston rod 59 of the elevating cylinder 56 is pivotally connected to the traveling body 2, and the rear end side of the cylinder body 60 of the elevating cylinder 56 is pivotally connected to the traveling machine body 2. The moving shaft 57 is adapted to rotate about its axis.

Further, a pair of left and right brackets 61 and 62 are provided on the rotating shaft 57, and the left bracket 61 is provided.
Is linked to a bracket 63 provided on the left support arm 51 via a link 64, and the right bracket 62 is linked to a bracket 65 provided on the right support arm 51 via a link 66. Then, when the rotation shaft 57 rotates, the links 64 and 66 are pushed and pulled to rotate the left and right support arms 51, whereby the left and right transmission cases 50 swing back and forth.

The bracket 65 provided on the right support arm 51 is interlockingly connected to the bracket 67 provided on the front wheel support shaft 53 via a link 68.
When the support arm 51 rotates, the link 68 is pushed and pulled to rotate the front wheel support shaft 53, whereby the left and right front wheel support arms 55 swing back and forth.
As described above, the traveling cylinder 2 is configured to be moved up and down with respect to the ground contact surface by the lifting cylinder 56.
The support arm 51, the transmission case 50, the front wheel support shaft 5
3, front wheel support arm 55, lifting cylinder 56, rotating shaft 5
7, brackets 58, 61, 62, 63, 65, 67,
By the links 64, 66, 68, etc., the left and right front wheels 3,
An elevating mechanism 9 is configured to support the vehicle 4 so as to be capable of moving up and down relatively to the traveling machine body 2.

In the transplanting machine 1 having the above-mentioned structure, when the planting work is performed, the traveling machine body 2 is lowered. At this time, in the present embodiment, the transmission case 50 is used.
Is inclined so that it moves upward as it goes forward (forward tilted posture), and the front wheel support arm 55 has an inclined shape that moves upward as it goes backward (backward leaning posture). When the transplanter 1 is turned in a headland on the end side of the ridge (at the end of the field), the handle 8 is pushed down, and the front part of the transplanter 1 is lifted with the rear wheel 4 as a fulcrum. At this time, the transmission case 50 is swung forward so that the ground contact portion of the rear wheel 4 is located below or near the center of gravity of the transplanter 1, and as shown by the solid line in FIG. The transmission case 50 is erected so that the transmission case 50 is substantially vertical (vertical or slightly inclined) with respect to the ground surface (the swing axis of the transmission case 50 and the rotation axis of the rear wheel 4). The transmission case 50 is erected so that the line segment connecting to and is substantially perpendicular to the ground contact surface).

At this time, the rear wheel 4 is positioned below the seat 6 (substantially directly below), and the front wheel support arm 55 is also substantially vertical to the ground contact surface like the transmission case 50. At the time of turning, the transmission case 50 is placed in a posture (substantially vertical posture) that is substantially vertical to the ground contact surface, and the rear wheel 4 that is the center of turning is brought forward as much as possible, so that the force for pushing down the handle 8 is light. (The force of lifting the front part of the transplanter 1 is reduced), the front part of the transplanter 1 is easily lifted and the swivel property is improved. Further, at the time of turning, the transmission case 50 is set in a substantially vertical posture and the rear wheel 4 serving as the center of turning is moved as far forward as possible, so that the turning radius of the transplanter 1 (the horizontal distance from the center of turning to the front end position of the transplanter 1). ) Becomes smaller, and when the transmission case 50 is made substantially vertical at the time of turning, the ground height at the time of turning can be made high and the transplanting device 5 on the front side of the transplanting machine 1 can be made high. It has the advantage that it can be lifted.

Further, by making the transmission case 50 substantially vertical, when a load acts from the upper side (seat 6 side), the load can be favorably supported by the transmission case 50. In addition, as shown by the phantom line in FIG.
When the piston rod 59 of the elevating cylinder 56 is fully extended, the rotation axis of the rear wheel 4 is rotated more than the swing axis of the transmission case 50. It may be configured to be located on the front side. If the engine E is turned off and the transplanter 1 is left at the time of storing the transplanter 1, etc., the pressure oil (pressure medium) in the lifting cylinder 56 leaks, but at this time, the transmission case 50 is inclined forward. If it is, there is a fear that the traveling machine body 2 may descend and come into contact with the ground.

Therefore, when the rear wheel 4 is stored, for example, the rotation axis of the rear wheel 4 is positioned in front of the swing axis of the transmission case 50, so that the engine E is turned off and the transplanter 1 is placed. In the case where it is kept, there is an advantage that the traveling machine body 2 does not descend even if the pressure oil in the lifting cylinder 56 leaks. The elevating cylinder 56 may be composed of either a single-acting cylinder or a double-acting cylinder, but the single-acting cylinder is cheaper, so that the cost can be reduced. When the elevating cylinder 56 is a single-acting cylinder, the traveling machine body 2 rises due to the force of the pressure oil and descends due to its own weight and the weight of the mounted equipment and the like.

Therefore, when the transmission case 50 is constructed so as to be able to swing further forward from the vertical posture, the double-acting cylinder shifts the transmission case 50 from the rearwardly inclined state to the forwardly inclined state beyond the vertical state. However, it has advantages over single-acting cylinders. Further, in the above configuration, the lifting cylinder 56
The transmission case 50 may be swung forward by contracting the piston rod 59. Further, the rocking fulcrum of the front wheel support arm 55 may be moved to the front side, and the front wheel support arm 55 may be in the forward tilted posture during the transplanting work, like the transmission case 50.

On the front side of the plant body 16 in the front part of the traveling machine body 2, from a roller or the like which rolls while contacting the upper surface of the ridge and rolling to detect a change in the height of the ridge relative to the traveling machine body 2. The detecting member 70 is provided. As shown in FIGS. 1 and 8, the detection member 70 is rotatably attached to a swing arm 72 which is supported on the lower end side of a support member 71 so as to be vertically swingable within a predetermined range, and is movable up and down within a predetermined range. In addition, the swing arm 72 is interlocked with a control valve that controls the lifting cylinder 56, and when the detection member 70 moves upward, the traveling machine body 2 rises and the detection member 70 moves downward. When it moves, the traveling machine body 2 is controlled to descend by that amount, and the planting depth is thereby made constant.

The upper portion of the support member 71 is swingably supported by the traveling machine body 2 in the front-rear direction, and the operating lever 73 swinging integrally with the supporting member 71 is a locking plate 74 of the traveling machine body 2. The support member 71 is restricted from swinging by being locked to. Further, the locking plate 74 is provided with a number of locking grooves 75 for locking the operation lever 73,
By changing the locking position of the operating lever 73 with respect to the locking groove 75, the support member 71 swings, and the detection member 70
The upper and lower positions of the traveling member 2 can be changed. By changing the upper and lower positions of the detection member 70, the relative height of the traveling machine body 2 with respect to the ridges is changed, whereby the planting depth can be changed. ing.

The rear wheel 4 and the transplanting device 5 are the engine E.
As shown in FIG. 9, the power output from the engine E is transmitted to the mission case M via the high speed clutch 78 or the low speed clutch 79 after passing through the main clutch 77. Is entered. Main clutch 77, high speed clutch 78 and low speed clutch 79
Are tension clutches, drive side pulleys P1 to P3, driven side pulleys P4 to P6, and an endless belt B wound around the pulleys P1 to P6.
1 to 3 and tension pulleys T1 to T3 and the like, and by pressing the tension pulleys T1 to T3 against the belts B1 to B3, power is transmitted and the tension clutches T1 to T3 are pressed against the belts B1 to B3. Main clutch 7 that is disengaged by releasing the force
The drive pulley P1 of No. 7 is provided on the output shaft 82 of the engine E, and the driven pulley P4 of the main clutch 77 and the drive pulleys P2, P3 of the high speed clutch 78 and the low speed clutch 79.
Is provided on the transmission shaft 83, and the driven pulleys P5 and P6 of the high speed clutch 78 and the low speed clutch 79 are provided on the input shaft 84 of the transmission case M.

The power input into the mission case M is transmitted through a transmission mechanism (two forward and backward) transmission shafts in the left and right support arms 51 and a power transmission mechanism in the left and right transmission cases 50 to the left and right rear. Power is transmitted to the wheel 4. Further, the power that has passed through the speed change mechanism is configured to be transmitted to the left and right rear wheels 4 via the left and right steering clutches in the mission case M. When the left or right steering clutch is disengaged, The orientation of the transplanter 1 is changed (turned) to the cut side.

Incidentally, in this transplanter 1, by disconnecting the power transmission to the rear wheel 4 on one of the left and right sides, it is possible to make a pivot turn by turning around the rear wheel 4 on one of the left and right sides. On the other hand, the power that has passed through the main clutch 77 is transmitted from the transmission shaft 83 through the winding transmission mechanism 80 to the transmission case 81.
Is input to the transplanting device 5 (planting mechanism 11 and seedling supply mechanism 12) via the planting clutch in the transmission case 81. When the main clutch 77 is disengaged, the traveling system and The power transmission of the transplant system is cut off.

As shown in FIGS. 1, 2, 10, and 11, a pair of left and right main clutch pedals 86 for intermittently operating the main clutch 77 is provided on the front end side of the floor plate 36 on the front side of the seat 6.
And a pair of left and right steering clutch pedals 87L and 87R for independently operating the left and right steering clutches. The main clutch pedals 86 are arranged on the outer side in the left-right direction of the planting mechanism 11, and each planting operator on the left and right seats 6 enables the main clutch 77 to be intermittently operated.

When the main clutch pedal 86 is depressed, the main clutch 77 is disengaged. When the depression force is released, the spring force causes the main clutch pedal 86 to return and the main clutch 77 to be engaged. It is possible for the transplanting operator to run and stop the transplanting device 5 while facing forward. Steering clutch pedal 87L,
87R is arrange | positioned in the left-right direction inner side of the main clutch pedal 86 of the right side, and the transplant operator on the seat 6 on the right side, and the seat 6 on the left side located in the center side of the right-and-left seedling supply apparatus 12. The transplant operator enables the intermittent operation of the steering clutch.

Further, steering clutch pedals 87L, 87R
Is to operate the steering clutch on the left and right sides,
When the stepping operation is performed, the steering clutch is disengaged, and when the stepping force is released, the steering clutch pedal 8 is released by the spring force.
The 7L and 87R are restored and the steering clutch is connected so that the transplant operator seated on the seat 6 can steer (steer) in a forward posture. Further, the main clutch 77 is provided at the rear of the traveling machine body 2.
Main clutch lever 88 for intermittently operating the clutch, planted clutch lever 89 for intermittently operating the planted clutch, high speed clutch 7
8 or a high / low speed switching lever 90 for selectively intermittently operating the low speed clutch 79, a speed change lever 91 for operating a speed change mechanism in the mission case M, an elevating lever 92 for operating the elevating cylinder 56, and left and right steering clutches independently. A pair of left and right steering clutch levers 93 that are operated in the same manner are provided.

The main clutch lever 88 and the planting clutch lever 89 are provided behind the seat 6 and at a position operable from above the seat 6, and the planting clutch lever 89 is located on the front side (arrow A in FIG. 10). Direction), the planting clutch is connected, when the planting clutch lever 89 is tilted to the rear side, the planting clutch is disconnected, and when the main clutch lever 88 is tilted to the front side, the main clutch 77 is connected and the main clutch lever 88 The main clutch 77 is disengaged when is pushed rearward. Further, the high / low speed switching lever 90, the speed change lever 91, the elevating lever 92, and the left / right steering clutch lever 93 are provided on the handle 8 side, and these levers 90, 91, 9 are provided.
2,93, when moving the transplanter, such as when running on the road,
An operator located behind the handle 8 can be operated.

The high / low speed switching lever 90 is operated along the left and right guide grooves 94, 95 connected at the rear end side. When the high / low speed switching lever 90 is tilted forward along the left guide groove 94, the low speed is lowered. When the clutch 79 is connected and the high / low speed switching lever 90 is tilted rearward along the left guide groove 94, the low speed clutch 79 is disconnected, and the high / low speed switching lever 90 is tilted forward along the right guide groove 95. High speed clutch 78
Is connected, and the high / low speed switching lever 90 is connected to the right guide groove 9
The high speed clutch 78 is disengaged when it is tilted rearward along line 5.

The high / low speed switching lever 90 is interlocked with the main clutch lever 88, and when one of the high / low speed switching lever 90 and the main clutch lever 88 is moved, the other is also moved. There is. When the main clutch lever 88 is moved, the high / low speed switching lever 90 is always moved along the left guide groove 94 (the low speed clutch 79 is turned on / off) so that the high / low speed switching lever 90 is moved. Is urged by a spring to fall to the left.

When the gear shift lever 91 is tilted to the front side, the gear is shifted to the reverse side, and when it is tilted to the rear side from the neutral position, the gear shift lever 91 moves forward.
When the gear is shifted to the gear side and further tilted to the rear side, the gear is shifted to the forward two gear side through the neutral position. When the elevating lever 92 is tilted to the front side, the traveling machine body 2 is lowered, and when it is tilted to the rear side, the traveling machine body 2 is raised.
While the lifting and lowering of the traveling body 2 is stopped,
It can be held in the front-rear intermediate position. The steering clutch lever 93 is provided on both the left and right sides of the handle 8 and operates the steering clutch on the left and right sides. When the steering clutch lever 93 is gripped, the steering clutch is disengaged, and the steering clutch lever 93 is disengaged. When the gripping force on the lever 93 is released, the steering clutch lever 93 is returned by the spring force, and the steering clutch is connected.
It is configured so that an operator can perform steering (steering) at the rear.

When the main clutch 77 is disengaged, the parking brake 96 is operated to brake the rear wheels 4, and when the main clutch 77 is engaged, the parking brake 96 is released. As shown in FIG. 3, the planting body 16 is provided with a water supply hose 97 for watering the seedlings to be planted and for removing soil on the inner surface of the planting cup 20 with water. This water supply hose 97 is used for the traveling body 2
12 is connected to the water supply pump 98 shown in FIG. 12, which is provided on the front part of the vehicle, and is connected to the water storage tank 99 shown in FIGS. 12 and 13 mounted on the traveling machine body 2 via the water supply hose. Therefore, when the seedlings are discharged from the planting plant 16, water from the water storage tank 99 can be supplied to the planting plant 16 (irrigation of the seedlings).

By starting the water supply before the seedlings are discharged, it is possible to stabilize the posture of the seedlings by dropping the water. A pair of front and rear water storage tanks 99 are provided. The front and rear water storage tanks 99 have substantially the same capacity, and are provided laterally (right side) of the traveling machine body 2 and separately on the front and rear portions of the traveling machine body 2. (In other words, the water storage tank 99 is provided on the traveling machine body 2 in a front-back distribution manner, and one water storage tank 99 is arranged on the front side of the position of the rear wheel 4 at the time of turning, and the rear wheel 4 is also disposed. The other water storage tank 99 is arranged on the rear side of the position).

Further, the water supply pump 98 is constructed so as to suck water from the front and rear water storage tanks 99 at the same time to supply the water to the plant 16, so that the water in the front and rear water storage tanks 99 is reduced substantially evenly. It has become. If the water storage tank 99 is arranged on one side of the front and rear of the traveling machine body 2, the weight ratio of the front and rear parts of the transplanter 1 changes depending on the remaining amount of water in the water storage tank 99, and when the vehicle turns, It may be difficult to handle (handle) the transplanter 1 when the front part of the transplanter 1 is lifted around the wheel 4 as a fulcrum. However, as in the present embodiment, the pair of water storage tanks 99 are connected to the traveling machine body. The water storage tanks 99 in front and in the back are distributed to the front and back in 2 and arranged.
By configuring the water inside to reduce the water almost evenly,
Even if the front and rear water storage tanks 99 are full or empty (regardless of the amount of water in the water storage tank 99), the transplanter 1
Since the weight balance before and after is not broken (or is not greatly broken), handling of the transplanter 1 at the time of turning can be facilitated, and the turning performance can be improved.

Therefore, the front and rear water storage tanks 99 are preferably evenly distributed to the front and back with the center of gravity of the transplanter 1 or the ground contact portion of the rear wheel 4 at the time of turning as a boundary. However, the effect is large as compared with the case where the water storage tank 99 is provided on one side in front of and behind the transplanter 1. The front and rear water storage tanks 99 may be provided on both left and right sides of the traveling machine body 2.

[0056]

EFFECTS OF THE INVENTION According to the present invention, there is provided a traveling machine body which is movably supported by a pair of left and right front and rear wheels and which is provided with a transplanting device for planting seedlings. On the other hand, it is provided on the lower end side of a wheel support body which is rotatably supported around an axis in the left-right direction, and the traveling machine body can be moved up and down by swinging the wheel support body around the axis of rotation. The wheel support that supports the rear wheels when the front part of the transplanter is lifted and turned around the rear wheel as a fulcrum by pushing down the handle provided at the rear of the traveling machine, It is possible to swing up to a posture that is almost vertical to, and by holding the rear wheel that is the center of turning as far forward as possible, the pushing force of the handle during turning becomes light, and the handling of the transplanter during turning is easy. Easy (turning An effect that the upper can be achieved).

Further, by making the wheel support for supporting the rear wheels in a substantially vertical posture during turning, it is possible to obtain a high ground clearance during turning of the transplanter. In addition, a transplanting device for planting seedlings is supported on the front part of the traveling body supported by a pair of front and rear wheels, and an engine is supported on the rear part of the traveling body, and between the transplanting device and the engine of the traveling body. By providing a seat for the transplant worker to bring the center of gravity under the seat, stability can be achieved during the transplant work, and a handle is provided on the rear end side of the traveling machine body, and the front and rear wheels are at the upper end. The side is provided on the lower end side of a wheel support body that is rotatably supported by the traveling machine body about the axis of rotation in the left-right direction, and the traveling machine body can be moved up and down by swinging the wheel support body about the axis of rotation. When the steering wheel is pushed down and the rear wheel is used as a fulcrum to lift and rotate the front part of the transplanter, the wheel support that supports the rear wheel should be placed below the seat from the forward leaning posture during the planting work. It is possible to swing until it is positioned, so when turning By bringing the rear wheel as a rotating center below the seat, an effect that handling during turning of the implant device is facilitated (improving turning performance can be achieved).

Further, a transplanting device for planting seedlings is supported on the front part of the traveling machine body movably supported by a pair of left and right wheels, and an engine is supported on the rear part of the traveling machine body. A wheel support with a seat on which the transplanter sits, and a handle on the rear end side of the traveling machine body, and the front and rear wheels, whose upper end sides are rotatably supported by the traveling machine body about the left-right axis. It is provided at the lower end of the body, and the traveling body can be raised and lowered by swinging the wheel support around the rotation axis, and the handle is pushed down to lift the front part of the transplanter with the rear wheel as a fulcrum and turn. In this case, the wheel support that supports the rear wheels can be swung from the forward leaning posture during the planting work to the posture in which the rear wheels are located below the seat and are substantially vertical to the ground contact surface. The same effect as the above Together achieved, it is substantially perpendicular shape, by a wheel support for supporting the rear wheel, it is possible to support the load from the seat side well.

Further, a traveling machine body supported by a pair of left and right front and rear wheels is provided, and an engine, a transplanting device for planting seedlings in a field, and water for irrigating the seedlings are accumulated in the traveling machine body. While supporting a pair of front and rear water storage tanks, a handle is provided on the rear end side of the traveling body, and the front and rear wheels are the lower ends of the wheel supports whose upper ends are rotatably supported on the traveling body about an axis in the left-right direction. On the side,
The traveling body can be raised and lowered by swinging the wheel support around the rotation axis, and the front side of the rear wheel position when pushing the handle and lifting the front part of the transplanter with the rear wheel as a fulcrum and turning. In addition to arranging one of the front and rear water storage tanks, and arranging the other front and rear water storage tanks on the rear side of the rear wheel position, water is supplied from the front and rear water storage tanks at the same time. Even when the vehicle is empty, the weight balance before and after the rear wheel is not significantly lost when turning, and the turning performance can be improved.

Further, the wheel support for supporting the rear wheels can be swung by the fluid pressure cylinder, and the wheel support can be swung further forward from the state perpendicular to the ground contact surface. Thus, when the traveling machine body is kept in the raised state during storage, even if the pressure medium of the fluid pressure cylinder leaks, the traveling machine body can be prevented from descending.

[Brief description of drawings]

FIG. 1 is an overall side view of a transplanter.

FIG. 2 is an overall plan view of the transplanter.

FIG. 3 is a side view of an implant device.

FIG. 4 is a plan view showing the relationship between the transplantation device and the seat.

FIG. 5 is a side view of a seat.

FIG. 6 is a plan view of front and rear wheels and a lifting device.

FIG. 7 is a side view of front and rear wheels and a lifting device.

FIG. 8 is a side view of the ridge height detection device.

FIG. 9 is a configuration diagram of a power transmission system.

FIG. 10 is a perspective view of various operation levers.

FIG. 11 is a configuration diagram of a clutch operation system.

FIG. 12 is a plan view of the transplanter showing the arrangement of the water storage tank and the water supply pump.

FIG. 13 is a side view of the transplanter showing the arrangement of the water storage tank.

[Explanation of symbols]

2 traveling aircraft 3 front wheels 4 rear wheels 5 Transplantation device 6 seats 8 handles 50 Transmission case (wheel support) 55 Front Wheel Support Arm (Wheel Support) 56 Lifting cylinder (fluid pressure cylinder) 99 water storage tank E engine M mission case

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasushi Fukutaka             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Yasushi Fujii             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory F-term (reference) 2B060 AA01 AC02 AD04 AE01 BA04                       BA09 BB05 BB07 CA01 CA03                       CA09 CB05 CC05                 2B063 AA02 AB01 AB03 AB08 BA02                       BA07 BA11 BA21

Claims (5)

[Claims] 1. A traveling machine body supported by a pair of left and right front and rear wheels so as to be capable of traveling and provided with a transplanting device for planting seedlings. It is provided on the lower end side of a wheel support body that is rotatably supported around the center, and the traveling machine body can be lifted and lowered by swinging the wheel support body around the rotation axis center, and at the rear part of the traveling machine body. When pushing down the handle provided and lifting the front part of the transplanter around the rear wheel as a fulcrum and turning, the wheel support that supports the rear wheel is approximately perpendicular to the ground contact surface from the forward tilted posture during planting work. A transplanter characterized by being capable of swinging to any posture. 2. A transplanting device for planting seedlings is supported on a front part of a traveling machine body supported by a pair of front and rear wheels, and an engine is supported on a rear part of the traveling machine body. A seat for a transplant operator to sit between is provided with a handle on the rear end side of the traveling machine body, and the left and right front and rear wheels are supported by the traveling machine body such that the upper end sides thereof are rotatable around the horizontal axis. It is provided on the lower end side of the wheel support, and the traveling machine can be raised and lowered by swinging the wheel support around the rotation axis, and the handle is pushed down to set the front part of the transplanter with the rear wheel as a fulcrum. A transplanter characterized in that, when lifting and turning, a wheel support for supporting a rear wheel is swingable from a forward tilted posture during a planting operation until the rear wheel is located below a seat. 3. A transplanting device for planting seedlings is supported on a front portion of a traveling body supported by a pair of front and rear wheels, and an engine is supported on a rear portion of the traveling body. A seat for a transplant operator to sit between is provided with a handle on the rear end side of the traveling machine body, and the left and right front and rear wheels are supported by the traveling machine body such that the upper end sides thereof are rotatable around the horizontal axis. It is provided on the lower end side of the wheel support, and the traveling machine can be raised and lowered by swinging the wheel support around the rotation axis, and the handle is pushed down to set the front part of the transplanter with the rear wheel as a fulcrum. When lifting and turning, the wheel support that supports the rear wheels swings from the forward leaning posture during planting work to the posture in which the rear wheels are located below the seat and are substantially vertical to the ground contact surface. A transplanter characterized by being enabled. 4. A traveling machine body movably supported by a pair of left and right front and rear wheels, wherein an engine, a transplanting device for planting seedlings, and a pair of front and rear pools for watering the seedlings are provided on the traveling machine body. In addition to supporting the water storage tank of the vehicle, a handle is provided on the rear end side of the traveling machine body, and the left and right front and rear wheels of the wheel support whose upper end side is rotatably supported by the traveling machine body around the axis in the left-right direction. It is provided on the lower end side,
The traveling body can be raised and lowered by swinging the wheel support around the rotation axis, and the front side of the rear wheel position when pushing the handle and lifting the front part of the transplanter with the rear wheel as a fulcrum and turning. The transplanter is characterized in that one water storage tank is arranged at the same time, and the other water storage tank is arranged at the rear side of the rear wheel position so that water is supplied simultaneously from the front and rear water storage tanks. 5. A wheel support for supporting a rear wheel is made swingable by a fluid pressure cylinder, and the wheel support is swingable further forward from a state perpendicular to a ground contact surface. The transplanter according to any one of claims 1 to 4, characterized in that: