JPH09238516A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter useful for vegetables or the like with excellent traveling stability and durability capable of miniaturizing the entire body without providing a special reinforcing member for which a swing mechanism is provided on the respective end parts of a swing shaft. SOLUTION: This transplanter is provided with a machine body 4 provided with an engine 2 and a transplanting part, a frame 1 for supporting the machine body 4 movably in a side direction, the swing mechanism 5 supported swingably to the frame 1 and a wheel 6 attached to the free end side of the swing mechanism 5. The frame 1 is formed into a frame shape by a horizontal rod 11, a rear horizontal rod 12 and left and right horizontal rods 13 and 14 for connecting both end sides of the horizontal rods 11 and 12. The rear end parts of the left and right horizontal rods 13 and 14 in the frame 1 are extended to the back, a cylinder shaft 16 is connected between the extened parts, the swing shaft 50 is freely rotatably supported inside the cylinder shaft 16 and the swing mechanism 5 is provided on the respective end parts of the swing shaft 50.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a transplanter for transplanting seedlings such as vegetables mainly on the ridges.

[0002]

2. Description of the Related Art Conventionally, this type of transplanting machine has a machine body on which an engine and a transplanting section are mounted, and a frame for slidably supporting the machine body in a lateral direction. At least a pair of left and right wheels is provided on the frame. Is supported so that it can swing up and down via a swing mechanism.

The frame is formed in a frame shape by front and rear lateral rods arranged in front and rear portions thereof, and left and right lateral rods connecting both ends of the front and rear lateral rods. A horizontal rod supports the aircraft so that it can slide laterally.
On the upper side of the frame, in order to stably and slidably support the heavy aircraft in which the engine and transplantation unit are mounted, a reinforcing frame is separately provided to strengthen the rigidity of the frame without twisting. are doing.

Further, as the swing mechanism, a swing shaft is provided separately from each rod of the frame, a plurality of rods are provided on the swing shaft, and a plurality of rods are provided on the transmission case of each wheel. By projecting and connecting each of these rods by a connecting body, a cylinder mechanism is connected to the swing shaft, and the swing shaft is rotated by the cylinder mechanism,
Along with this, by vertically swinging each transmission case through each of the projecting rods and each connecting body, each wheel is vertically swung with respect to the frame.

During the transplanting work by the transplanter, the swing mechanism swings each wheel vertically with respect to the frame according to the height of the ridge on which the seedlings are planted, so that the frame is mounted on the machine body. After adjusting the height of the transplanted portion with respect to the ridges, and while running the wheel along the groove between the ridges after such adjustment, a single seedling is transplanted on the ridges by the transplanting portion, for example, on one side in the width direction. When the transplanting work of the one-row seedling is completed, the one-row seedling is transplanted to the other side in the width direction on the ridge by rotating and performing the transplanting work.
After transplanting the two-row seedlings on the ridges in this way, the machine is slid laterally along the front and rear lateral rods of the frame, and the transplanting operation is repeated between the already-transplanted two-row seedlings. The transplanting section allows transplanting a plurality of seedlings onto one ridge.

[0006]

However, as described above, in order to stably support the heavy aircraft in which the engine and the transplant portion are mounted on the frame, the reinforcing frame is separately provided on the upper side of the frame. Then, the reinforcing frame raises the center of gravity of the transplanter to that extent, deteriorating the running stability, and the visibility in front of the fuselage deteriorates to make it difficult to carry out traveling work. When providing a water tank, a irrigation tank, or the like, the reinforcing frame interferes with the design freedom. Moreover, as described above, when the swing shaft is arranged separately from the frame and the swing mechanism is connected to the swing shaft, a space for disposing the swing shaft is separately required,
There was also the inconvenience that the entire transplanter became larger.

The object of the present invention is to make it possible to sufficiently increase the rigidity of the frame without providing a special reinforcing member, and to make a large design when disposing a preliminary seedling stand, a watering tank or the like on the upper side of the frame. It is an object of the present invention to provide a transplanter that can secure the degree of freedom, can lower the center of gravity position for stable traveling, and can downsize the entire configuration.

[0008]

In order to achieve the above-mentioned object, the invention according to claim 1 has a machine body 4 having an engine 2 and a transplant portion 3, and a frame 1 for supporting the machine body 4 so as to be movable laterally. In a transplanter including a swing mechanism 5 supported swingably with respect to the frame 1 and wheels 6 attached to the free end side of the swing mechanism 5, the frame 1 is attached to the front lateral rod 11 And the rear horizontal rod 12 and the left and right horizontal rods 1 that connect both end sides of these horizontal rods 11 and 12.
3, 14 are formed in a frame shape, the rear end portions of the left and right lateral rods 13, 14 of the frame 1 are extended rearward, and a cylinder shaft 16 is connected between these extension portions. The swing shaft 50 is rotatably supported therein, and the swing mechanism 5 is provided at each end of the swing shaft 50.

[0009]

According to the above-described structure, the frame 1 is formed in a frame shape, and the supporting portion for supporting the swing shaft 50 is formed by the cylindrical shaft 16, and each end portion of the cylindrical shaft 16 is framed. Since the frame-shaped frame 1 is coupled to the frame 1, the rigidity of the frame-shaped frame 1 can be increased without providing a special reinforcing member.
Since the swing shaft 50 is supported in the cylinder shaft 16, the rigidity of the frame-shaped frame 1 can be further enhanced, and accordingly, the heavy-duty vehicle body 4 on which the engine 2 and the transplant portion 3 are mounted can be installed along the frame 1. When sliding, the frame 1 can be stably supported on the frame 1 without being twisted even when a large bending moment acts on the frame 1, and durability can be improved.

Moreover, since the rigidity of the frame 1 can be increased without providing a reinforcing member, a spare seedling stand, an irrigation tank, etc. are provided above the frame 1 without interfering with the reinforcing frame. In addition to ensuring a great degree of freedom in design, the center of gravity can be lowered compared to when a reinforcing frame is provided, and stable traveling can be achieved.In addition, the visibility in front of the aircraft can be improved and traveling work can be performed. It will be easier to do. Moreover, since the swing shaft 50 of the swing mechanism 5 is inserted into and supported by the cylindrical shaft 16, the swing shaft is arranged as in the case where the swing shaft is provided separately from each rod of the frame 1. Cylindrical shaft 16 that strengthens the frame 1 without requiring additional space
The swing shaft 50 can be disposed while effectively utilizing the above, and the overall configuration of the transplanter can be downsized.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The transplanter shown in FIGS. 1 to 3 supports a body 1 having an engine 2 and a transplanter 3 mounted on a frame 1 so as to be slidable in the left-right direction, and at the bottom of the frame 1. A wheel 6 is swingably supported on the side via a swing mechanism 5, and in the embodiments of each drawing, a pair of front wheels 61, 6 are provided on the lower side of the frame 1 in the front, rear, left and right directions.
The front wheel 1 and the rear wheels 62, 62 are supported by a swing mechanism 5 so as to be vertically swingable, and a steering handle 10 is provided on the rear side of the machine body 4 to provide a four-wheel walking type.

The frame 1 is provided with front and rear horizontal rods 11 and 12 horizontally arranged in front and rear portions thereof in the vehicle width direction, and left and right ends of the front and rear horizontal rods 11 and 12. The left lateral rod 13 and the right lateral rod 14 which are connected to each other and are arranged horizontally in the vehicle front-rear direction over the sliding dimension of the machine body 4, and the left and right lateral rods on the outer side of the right lateral rod 14. 1
3, 14 and an outer rod 15 arranged in parallel with each other to form a frame shape, and the rear side of these left and right lateral rods 13, 14 is extended to the rear side of the rear lateral rod 12 so that A tubular shaft 16 is connected between the extension portions in parallel with the rear lateral rod 12, and a swing shaft 50 for operating the swing mechanism 5 is rotatably inserted and supported inside the tubular shaft 16. Further, the outer rod 15 has its rear side extended to the rear side of the rear horizontal rod 12, and the extended end rotatably supports the right end of the swing shaft 50 supported in the tubular shaft 16. There is.

More specifically, in the embodiments shown in the drawings, front side plates 17 and 17 are fixed to the front end sides of the left and right lateral rods 13 and 14 and the outer rod 15, respectively. A front lateral rod 11 made of a circular pipe is passed through and connected to each other, and a rear side plate 18 extending to a rearward extension of the left and right lateral rods 13 and 14 and the outer rod 15 is provided. The rear lateral rod 12 made of a circular pipe is fixedly attached between these rear side plates 18, and the left side,
While the cylindrical shaft 16 is coupled to the extended end side of each rear side plate 18 provided on the right lateral rods 13 and 14, the swing shaft 50
The right end side of the swing shaft 50 protruding outward from the right end side of the cylinder shaft 16, and the end portion of the swing shaft 50 protruding from the cylinder shaft 16 is inserted into and supported by the extended end portion of the rear side plate 18 provided on the outer rod 15. As a result, these front and rear lateral rods 11 and 12, left and right lateral rods 13 and 14, outer rod 15, front and rear side plates 16 and 1 are provided.
7, the entire frame 1 is framed in a rectangular shape in plan view. In addition, the left and right lateral rods 13 and 14 and the outer rod 15
Are formed by square pipes that are strong against bending loads, and the strength of the frame 1 is further increased.

A front side plate 17 fixed to the front end side of the left lateral rod 13 rotatably supports a supporting portion 18 extending outward in the vehicle width direction below the supporting portion of the front lateral rod 11. Let me
An upper end boss portion 64 of a support arm 63 that supports the left front wheel 61 is fixedly supported by the support portion 18 with pins, bolts, or the like. On the other hand, a front side plate 17 fixed to the front end side of the right lateral rod 14 and the outer rod 15 extends downward in the vehicle width direction concentrically with the supporting portion 18 below the supporting portion of the front lateral rod 11. The support portion 19 is rotatably supported, and the upper end boss portion 66 of the support arm 65 that supports the right front wheel 61 is fixedly supported by the support portion 19 with pins, bolts, or the like. These left and right front wheels 61, 61 are provided with respect to the support parts 18, 19 as shown in solid and phantom lines in FIG.
By inverting and supporting 4, 66, the front wheel 61
The tread between them can be changed. The support portion 19 that supports the right front wheel 61 is composed of a tubular portion 19a supported on the front side plate 17 side and a shaft portion 19b that is extendably inserted into the tubular portion 19a. Part 1
It is also possible to change the tread between the front wheels 61 by detaching and attaching a pin, a bolt or the like between the shaft 9b and the shaft portion 19b and changing the protruding length of the shaft portion 19b from the cylindrical portion 19a. It has become.

Further, the rear side plate 18 fixed to the rear end side of the left lateral rod 13 is provided below the support portion of the rear lateral rod 12, and an end portion of a transmission case 67 for supporting the axle of the left rear wheel 62. The connecting portion 67a is supported so as to be vertically swingable, and the connecting portion 6a is supported.
The left end portion of the output shaft 7 that is inserted into 7a is interlocked with the left rear wheel 62 via the power transmission mechanism in the transmission case 67. On the other hand, a tread adjusting cylinder 69 is rotatably inserted and supported below the support portion of the rear horizontal rod 12 by each rear side plate 18 fixed to the rear end side of the right horizontal rod 14 and the outer rod 15. An end connecting portion 68a of a transmission case 68 provided on the right rear wheel 62 is inserted into the adjusting cylinder 69 to be fixedly supported by a pin or a bolt so as to be adjustable in expansion and contraction. The right end of the inserted output shaft 7 is interlocked with the right rear wheel 62 via the power transmission mechanism in the transmission case 68.

Further, each of the transmission cases 67 and 68 has:
The axles 67b and 68b are respectively projected inward and outward so that the left and right rear wheels 6 are located at the inner and outer positions of the respective axles 67b and 68b.
By reversing and supporting 2, the tread adjusting cylinder 6
In combination with the expansion and contraction adjustment of the transmission case 68 with respect to 9, the tread adjustment of the rear wheel 62 can be performed similarly to the front wheel 61 side, and by doing so, the tread between the wheels 61 and 62 can be made into a ridge. It can be freely changed according to the groove width.

The output shaft 7 has a drive unit 70 having a drive gear 75 to which the rotational power of the engine 2 is input.
And a pair of left and right spline shafts 71, 72. The spline shafts 71, 72 and the drive unit 70 are interlocked with each other via a pair of left and right sleeves 73, 74, so that the engine 2 follows the machine body 4. The rotational power of the engine 2 can be transmitted to the left and right rear wheels 62 even when the vehicle is slid to the left and right. The left and right rear wheels 6 are provided on both sides of the drive gear 75 in the drive unit 70.
Left and right side clutches 76, 77 for independently rotating and driving the two are provided.

Power is transmitted to the transplanting section 3 via a planting transmission case 31 provided on the rear side of the machine body 4, and is vertically moved between a seedling receiving position on the upper side and a seedling planting position on the lower side. Bucket-like graft claw 3 composed of two reciprocating pieces
2, a transport unit 33 that transports a seedling tray T having a plurality of pot seedling storage units, and a potting seedling 32 that is taken out from the seedling tray T transported by this transport unit 33 and stands by at the seedling receiving position. It is configured with a seedling take-out nail 34 that releases the taken-out seedling. In addition, 35 is a multi-cutter for opening a transplant hole in the mulch film coated on the ridge, and 36 is a culture soil ring for cultivating pot seedlings planted in the ridge by the transplant nail 32.

A substantially U-shaped first bracket 41 whose lower end side is open is attached to the front side of the machine body 4 through a connecting body 42, and the front horizontal rod is provided inside the first bracket 41. A plurality of rolling elements 43 slidably contacting the upper and lower outer peripheral portions of 11 are rotatably supported, and a second box-shaped second bracket 44 is attached to the rear side of the machine body 4, and inside the second bracket 44. A plurality of rolling elements 45 slidably contacting the upper and lower outer circumferences of the rear horizontal rod 12 are rotatably supported,
Each rolling element 4 in these first and second brackets 41, 44
The vehicle body 4 is slid in the vehicle width direction over the range of the left and right lateral rods 13, 14 while rolling the 3, 45 along the front and rear lateral rods 11, 12. As a result, the heavy machine body 4 on which the engine 2 and the transplant portion 3 are mounted can be smoothly and stably slid along the front and rear lateral rods 11 and 12.

Further, as is clear from FIGS. 4 and 5, the machine body 4 includes a first machine frame 4A on which the engine 2 is mounted,
The first bracket 41 is fixed and the second machine frame 4B is fixed to the front side of the first machine frame 4A, and the second bracket 44 is fixed to be combined to the rear side of the first machine frame 4A. It is composed of a third machine frame 4C, and each of these machine frames 4A, 4B, 4C.
By welding W1 and W2 at the joints of
The whole is unitized.

In this case, when assembling the machine body 4 on the frame 1 side, it can be set easily and accurately without the need for a jig or the like, and can be disassembled and set again at the time of maintenance. Even in such a case, the frame 1 can be accurately set while maintaining the parallelism.

The frame 1 and the front and rear wheels 61,
A swing mechanism 5 for vertically swinging the wheels 61 and 62 is provided between the swing mechanism 5 and 62.
The swing mechanism 5 is used for the engine 2 in the machine body 4.
Of the hydraulic pump P disposed near the mounting portion of the frame 1 and the right lateral rod 14 and the outer lateral rod 15 of the frame 1 on which the machine body 4 does not slide, and is connected to the pump P via hydraulic piping. A hydraulic cylinder 51 having a piston rod 51a, and a swing shaft 50 that is inserted into the cylindrical shaft 16 and protrudes from the right side, and is connected to the tip end side of the piston rod 51a via a connecting tool. The protruding piece 52 and this first
The second projecting piece 5 projecting on the swing shaft 50 near the projecting piece 52
3, a third projecting piece 54 projecting from the left end side of the swing shaft 50, and a tread adjusting tube 69 on which the connecting portion 68a of the right transmission case 68 is inserted and supported so as to face the second projecting piece 53. And a right-side front wheel 61. The fourth projecting piece 55 projecting on the right side front wheel 61, the fifth projecting piece 56 projecting on the connecting portion 67a of the left transmission case 67 so as to face the third projecting piece 54, are supported. A sixth projecting piece 57 protrudingly provided on the supporting portion 19 so as to face the fourth projecting piece 55, and a sixth projecting piece 56 provided so as to face the fifth projecting piece 56 on the supporting portion 18 supporting the left front wheel 61. 7 projecting piece 58, between the 2nd and 4th projecting pieces 53 and 55, between the 3rd and 5th projecting pieces 54 and 56, between the 4th and 6th projecting pieces 55 and 57, and the 5th The connecting rod 59 connects between the seventh projecting piece 56 and the seventh projecting piece 58.

Then, the piston rod 51a of the hydraulic cylinder 51 is advanced and retracted by the pressure oil from the hydraulic pump P, and the swing shaft 50 in the cylinder shaft 16 is moved by the first projecting piece 52.
By rotating the front and rear wheels 61 and 62 through the respective projecting pieces 52 to 58 and the respective connecting rods 59.
By swinging vertically in the range indicated by the solid line and the phantom line, the ground height of the frame 1 can be adjusted to an arbitrary height.

Further, between the frame 1 and the machine body 4, there is provided a slide mechanism 8 for sliding the machine body 4 in the vehicle width direction within the range of the left and right lateral rods 13, 14. The slide mechanism 8 is supported by a mounting plate 17a fixed to the front side plate 17 of the right lateral rod 14 and has a hydraulic cylinder 81 having a piston rod 80 connected to the hydraulic pump P, and the mounting plate 17a. A rocking arm 83, which is interposed between a receiving body 82 having a long hole provided in the machine body 4 and to which the piston rod 80 is connected, is provided in an intermediate portion. By moving the piston rod 80 of the cylinder 81 forward and backward to swing the swing arm 83, the machine body 4 is slid in the left-right direction of the frame 1.

The steering handle 10 extending to the rear side of the machine body 4 includes left and right side clutch levers 10a,
A planting clutch lever 10b for turning on and off the power to the transplanting section 3, a swing lever 10c for operating the cylinder 51 of the swing mechanism 5 to swing the front and rear wheels 61, 62 up and down, a main traveling shift A lever 10d, a slide operation lever 10e of the machine body 4, an inter-stock adjustment lever 10f, etc. are arranged.

Next, the operation of planting pot seedlings on the ridges by the above transplanter will be described. First, by operating the swing mechanism 5 as described above, the front and rear wheels 61 and 62 are swung in the vertical direction with respect to the frame 1 in accordance with the height of the ridge on which the pot seedlings are planted.
The height of the ridge of the transplanting part 3 mounted on the frame 1, that is, the machine body 4 is adjusted, and the machine body 4 is slid by the operation of the slide mechanism 8 to move the transplanting part 3 to the left and right lateral rods 13, 14 on one side. And
While holding the steering handle 10 and causing the wheels 61 and 62 to run along the groove between the ridges, a single seedling is planted on the ridge by the transplanting section 3, for example, on one side in the width direction. When the planting work of No. 1 is completed, by swiveling and performing the transplanting work, one row of seedlings is transplanted to the other side in the width direction on the ridge,
After transplanting the two-row seedlings on the ridges in this way, the machine is slid laterally along the front and rear lateral rods of the frame by the operation of the slide mechanism 8, and between the two-row seedlings that have already been transplanted. By repeating the transplanting operation, a plurality of rows of seedlings can be transplanted onto one ridge at the transplanting portion.

At this time, the left and right lateral rods 13 and 14 of the frame 1 are slidably supported on the frame 1 even though the heavy body 4 on which the engine 2 and the transplanting portion 3 are mounted is slidably supported. The rigidity of the frame 1 can be enhanced by the cylinder shaft 16 connected between the rear end extensions, and the swing shaft 50 of the swing mechanism 5 is provided inside the cylinder shaft 16.
Since the frame is inserted and supported, the rigidity of the frame 1 can be further strengthened by the cylinder shaft 16 and the swing shaft 50. Therefore, when the machine body 4 is slid along the frame 1, the frame 1 has a large size. Even if a bending moment acts, the frame 1 can be stably supported on the frame 1 without being twisted. Moreover,
Since the respective constituent members of the frame 1 are arranged horizontally, a great degree of design freedom can be ensured when disposing the preliminary seedling stand, the irrigation tank and the like on the upper side of the frame 1.
It is possible to lower the center of gravity of the transplanter for stable traveling, and moreover, since the swing shaft 50 is incorporated in the cylinder shaft 16, the swing is performed while effectively using the cylinder shaft 16 for strengthening the frame 1. The shaft 50 can be provided, and the overall structure of the transplanter can be reduced in size.

As described above, since a large degree of design freedom can be ensured on the upper side of the frame 1, in FIG. 1, the stay 20 is erected at the intermediate portion of the front and rear wheels 61 and 62 of the frame 1. Install it on this stay 20
The cover 4a that covers the upper side of the above is detachably attached, and the support 21 having a substantially U-shaped side view is detachably attached to the stay 20 with a mounting screw, and the irrigation tank 22 is detachably attached to the support 21. I am trying to install it.

As described above, when the irrigation tank 22 is mounted at the intermediate portion between the front and rear wheels 61 and 62, the front and rear balance of the transplanter and the steering handle 10 are provided even if the amount of water in the tank 22 changes. Without the load being changed,
The transplanter can run stably, and the tank 2 can be moved from the position of the operator who holds the handle 10.
It is also possible to easily supply water to the inside of 2. Further, when the tank 22 is not used, the support 21 is removed from the stay 20. At this time, since the stay 20 is incorporated in the cover 4a, the appearance of the transplanter is not spoiled.

Further, in FIG. 1, for example, front and rear wheels 61,
When performing maintenance work such as changing the tread between 62, when the front and rear wheels 61 and 62 are moved backward by the operation of the swing mechanism 5 as shown by the phantom line in FIG. A pair of front and rear stands 9, 9 for holding the rearward positions of the rear wheels 61, 62 are attached to the frame 1 and the machine body 4.

Since each of the stands 9 has the same structure, only the front stand will be described. That is, as is apparent from FIG. 6, the stand 9 is provided with a lock pin 90 projecting laterally at an intermediate portion in the longitudinal direction, and a base end side opposite to the ground side is provided with a first shaft 91. The front side plate 17 is supported so as to be vertically swingable, and another second shaft 92 is supported on one side near the first shaft 91 of the front side plate 17, and the second pin 92 supports the lock pin. A lock plate 93 for locking the stand 9 between the upper non-use position (solid line state in the figure) and the lower use position (virtual line state) via 90 is swingably attached.

A groove 94 through which the lock pin 90 is inserted is formed on the tip side of the lock plate 93. The groove 94 guides the lock pin 90 when the stand 9 is moved up and down. A straight guide groove 94a extending in the length direction of 93 and the second shaft 92 of the guide groove 94a.
The lock pin 90 is formed in a substantially L shape with a locking groove 94b for locking the lock pin 90 provided on the side orthogonal to each other, and the lock pin 90 engages with the locking groove 94b as shown by a solid line and a chain line in FIG. At this time, the weight of the lock plate 93 acts on the lock pin 90 so that the engagement state between the lock pin 90 and the locking groove 94b can be maintained. Further, a bracket 95 having a substantially U shape is attached to the second shaft 92 side of the groove 94 of the lock plate 93, and a substantially L-shaped rod 96 extending toward the locking groove 94b side of the groove 94 is attached to the bracket 95.
Is supported so that it can move forward and backward, and a spring stopper 97 is fixed to the outer peripheral portion of the rod 96 in the bracket 95, and the rod 96 is locked between the spring stopper 97 and the inner wall of the bracket 95. An urging spring 98 for constantly urging the lock pin 90 and the locking groove 94b is interposed so as to reliably prevent the lock pin 90 and the locking groove 94b from being disengaged accidentally.

When the stand 9 is not used,
As shown by the solid line in the figure, the stand 9 is vertically erected upward with the first shaft 91 as the center, and the lock pin 90 of the stand 9 is locked in the locking groove 94b of the groove 94. At this time, the tip end side of the rod 96 is projected toward the locking groove 94b side by the urging force of the urging spring 98, and abuts against the back surface side of the lock pin 90 locked in the locking groove 94b. As a result, the lock pin 90 can be prevented from being detached from the locking groove 94b without permission, and the stand 9 can be prevented from falling down, so that the stand 9 is securely held in the upper unused position. be able to.

When the stand 9 is vertically inverted downward from the above state during maintenance work such as tread change, the rod 96 is first biased by the biasing spring 9.
The lock pin 90 is disengaged from the locking groove 94b by swinging the stand 9 forward (in the direction of arrow X in FIG. 6) while retracting from the locking groove 94b while resisting 8. While swinging the stand 9 further to the lower front side, when it is positioned at the lower vertical position shown by the phantom line in the figure,
The lock pin 90 is reciprocated along the guide groove 94a, and is again locked in the locking groove 94b.
At this time, similarly to the case described above, the tip end side of the rod 96 is projected toward the locking groove 94b side by the urging force of the spring 98,
Since the lock pin 90 is automatically brought into contact with the back side of the lock pin 90 locked in the locking groove 94b, the lock pin 90 is disengaged from the locking groove 94b, and the stand 9 is arbitrarily moved. The stand 9 can be reliably held in the lower use position without moving, and safe maintenance work can be performed.

In the above embodiment, the four-wheel walking type transplanter in which the front and rear wheels 61 and 62 are supported on the front and rear sides of the frame 1 has been shown. However, the present invention is a four-wheel riding type transplanter or a two-wheel type transplanter. It can also be applied to a wheel-walking type transplanter.

[Brief description of drawings]

FIG. 1 is a side view showing the overall structure of a transplanter according to the present invention.

FIG. 2 is a plan view of the main part.

FIG. 3 is a side view of the same main part.

FIG. 4 is a side view of the airframe.

FIG. 5 is a plan view thereof.

FIG. 6 is a side view showing the stand.

[Explanation of symbols]

 1 ... Frame 11 ... Front horizontal rod 12 ... Rear horizontal rod 13 ... Left horizontal rod 14 ... Right horizontal rod 16 ... Cylindrical shaft 2 ... Engine 3 ... Implanting part 4 ... Aircraft 5 ... Swing mechanism 50 ... Swing shaft 6 ... wheels

Claims (1)

[Claims] 1. A machine body (4) having an engine (2) and a transplant part (3), a frame (1) for movably supporting the machine body (4) in a lateral direction, and a frame (1) with respect to the frame (1). Swing mechanism (5) supported so that it can swing, and wheels (6) attached to the free end side of this swing mechanism (5)
In a transplanter equipped with, the frame (1) includes a front lateral rod (11), a rear lateral rod (12), and these lateral rods (11).
Left and right side bars (13) (1) that connect both ends of (12)
4) is formed into a frame shape, and the rear end portions of the left and right lateral rods (13) and (14) of the frame (1) are extended rearward, and the cylindrical shaft (16) is connected between these extension portions. Then, the swing shaft (50) is rotatably supported in the cylindrical shaft (16),
The swing mechanism (5) is attached to each end of the swing shaft (50).
A transplanter characterized by comprising: