JP2002045010A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a walking type seedling transplanter capable of making an operator readily work regardless of the kinds and the sizes of seedlings. SOLUTION: In the conventional constitution of a seedling transplanter, a turntable 41 is intermittently turned by rocking of a seedling supplying drive arm 49 linked to an operation of a seedling planting apparatus, seedlings are sometimes not readily dropped and supplied downward properly depending upon the sizes and kinds of seedlings. On the other hand, in the constitution of this seedling transplanter, the seedling transplanter is equipped with a mechanism for opening a shutter 52 of a seedling supply cut 40 at a movement timing connected directly to the seedling planting apparatus by installing a shutter opening and closing arm material 56A to be brought into contact with a projection 61D being one constitutent member of the seedling planting apparatus. Thus, an operator readily plants seedlings since the bottom (shutter 52) of the seedling supply cup 40 is surely synchronized with the movement of the seedling planting apparatus and controllably opened and closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for vegetables and the like.

[0002]

2. Description of the Related Art Seedlings in a seedling supply cup placed on a turntable are dropped onto a seedling planting device by sequentially opening the cup bottom plate, and the seedlings are successively placed on a ridge by the seedling planting device as the seedling transplanter advances. 2. Description of the Related Art Walking-type seedling transplanters for planting are known.

[0003]

In the above-mentioned conventional walking type seedling transplanter, the operator performs a plurality of operations while running the seedling transplanter while supplying seedlings from a nursery bed into a seedling supply cup on a turntable. In order to carry out the seedling transplantation at the same time, the seedling transplanter was operated while checking whether or not the seedlings had fallen smoothly from the bottom plate of the seedling supply cup to the seedling planting apparatus.

In the conventional walking type seedling transplanter, the seedlings in the seedling supply cup placed on the turntable are dropped into the seedling planting device by sequentially opening the cup bottom plate.
Depending on the size and type of the seedling, it was not always possible to reliably drop it on the seedling planting device.

Accordingly, an object of the present invention is to provide a walking-type seedling transplanter that is easy for workers to work regardless of the type and size of the seedling.

[0006]

In order to solve the above problems, the present invention has the following arrangement. That is, a plurality of seedling supply cups each containing a seedling (seedling supply cup 4).
(0) is transported along a predetermined transport path (turntable 41);
Only when 1) is at a predetermined position, the release of the openable bottom (shutter 52) of the seedling supply cup (seedling supply cup 40) is released, and the bottom (shutter 52) is opened to open the seedling supply cup (seedling supply cup). 40) In a seedling transplanting machine in which an opening restricting tool (shutter closing rod 53) for dropping the seedlings in the lower seedling planting means (seedling planting means 5) to the conveying means (turntable 41), the opening regulation is performed. Seedling whose opening timing of the bottom of the seedling supply cup (seedling supply cup 40) can be adjusted further below the tool (shutter closing rod 53) in conjunction with the movement of the seedling seeding means (seedling seeding means 5). Supply cup bottom plate opening restriction means (shutter opening / closing arm 56A)
It is a seedling transplanter provided with.

[0007] The opening restricting tool (shutter closing rod 53) attached to the conveying means (turntable 41) is connected to the bottom (shutter 5) of the seedling supply cup (seedling supply cup 40).
The end (end 53) at which the opening timing of 2) can be changed
It is desirable to adopt a configuration in which the telescopic means (a) (auxiliary closing rod 53b, arm 53c, telescopic position fixing members 53d and 53e) are provided.

[0008]

In the configuration shown in FIG. 4, the turntable (41) is intermittently rotated by the swing of the seedling supply drive arm (49) interlocking with the operation of the seedling planting device (5). Since the opening of the shutter (52) of the seedling supply cup (40) due to the swing of the seedling supply drive arm (49) is interlocked with the rotation of the turntable (41), the seedling planting device (5) To accurately synchronize with the operation, it is necessary to increase the rotation of the turntable (41) to some extent.

However, if the rotation of the turntable (41) is increased, the shutter (52) is opened while the seedling supply cup (40) moves laterally at a high speed, so that the seedling is properly dropped and supplied downward. There is a possibility that the worker may not easily supply seedlings to the seedling supply cup (40).

On the other hand, the above-mentioned construction of the present invention provides a seedling planting device (5) by providing a shutter opening / closing arm member (56A) which comes into contact with the projection (61D) which is a component of the planting plant (5). A mechanism for opening the shutter (52) of the seedling supply cup (40) at the movement timing directly connected to (5) is provided.

In this way, the bottom (shutter 52) of the seedling supply cup (40) is controlled to be opened and closed in synchronization with the movement of the seedling planting device 5, so that the operator can easily plant seedlings.

An opening restricting tool (shutter closing rod 53) attached to the conveying means (turntable 41) has an end (shutter 52) for changing the opening timing of the bottom (shutter 52) of the seedling supply cup (40). Since the telescopic means (the auxiliary closing rod 53b, the arm 53c, the telescopic position fixing members 53d and 53e) of the end portion 53a) are provided, the seedling can be moved by the seedling supply cup (40) depending on the size of the seedling or the type of the seedling. Smooth and reliable seedling planting device (5) at bottom (shutter 52)
Can now be dropped. In addition, since the bottom plate of the seedling supply cup (40) is not unnecessarily opened, the seedling supply area by the transplanter (1) can be expanded.

[0013]

1 and 2 are a side view and a plan view, respectively, of a vegetable transplanter as an example of a seedling transplanter to which the present invention has been applied. This vegetable transplanter 1 has traveling wheels (rear wheels 2,
2 and front wheels 3, 3), while the body is advanced while straddling the ridge U by the traveling portion 1a, the vegetable seedlings are ridged by the planting portion 1b including the seedling supply device 4, the seedling planting device 5, and the like. U
It is configured to be planted on the upper surface. The operator appropriately steers the aircraft with the steering handle 6 provided at the rear of the aircraft, and supplies seedlings to the seedling supply device 4 while walking on the side of the aircraft during the planting operation. Hereinafter, the configuration of each unit will be described.

The traveling section 1a will be described. An engine 9 is arranged in front of the traveling section transmission case 7.
A hydraulic pump 10 driven by the power of the engine 9 is provided on a left side surface of the engine 9. Engine 9
Is provided with a fuel tank 11 and the like, and a bonnet 12 covers the upper side. Traveling part transmission case 7
Left and right long connecting frames 13 on the back of
The front end of a main frame 14 that connects the traveling unit 1a and the steering handle 6 is fixedly connected to the right end of the rear surface of the connection frame 13. The main frame 14 extends rearward through the right side of the planting portion 1b in plan view, curves obliquely upward on the way, and extends as it is to the rear position of the planting portion 1b. The steering handle 6 is fixedly attached to the rear end.

The traveling transmission cases 16 and 1 are attached to rotating cylinder portions 15 and 15 protruding from the left and right side surfaces of the traveling section transmission case 7.
6 are integrally attached, and the traveling transmission cases 16, 1
The rear wheels 2, 2, which are driving wheels, are pivotally supported at the tip of the wheel 6. The front wheel support frame 1 is provided below the engine 9 so as to be swingable about a pivot shaft 17a in the front-rear direction.
Front wheel support rods 18 are attached to the left and right ends of the 7 so as to be adjustable in height, and the front wheels 3, 3 which are driven traveling wheels are pivotally supported at the lower ends of the rods 18, 18.

The traveling section 1a is provided with a body control mechanism for controlling the position of the body by moving the rear wheels 2, 2 up and down with respect to the body. This body control mechanism is provided with an elevating cylinder 21 provided rearward from a hydraulic valve unit 20 disposed on the traveling section transmission case 7, and a balance rod 22 is provided at a tip end of a piston rod 21 a of the cylinder 21 in a vertical direction. It is attached so that it can rotate around the axis. The front and rear ends of the piston rod 21a slide along a guide shaft 24 supported by the hydraulic valve unit 20 and an attachment member 23 attached to the main frame 14. The left and right ends of the balance rod 22 and the swing arms 25 fixed to the rotary cylinders 15 are connected to the connecting rods 26,2.
6 are connected. The left connecting rod 26 is
A rolling cylinder 27 is incorporated, and its length can be changed by extending and contracting the cylinder 27.

The lifting cylinder 21 and the rolling cylinder 27 are operated by controlling a hydraulic oil supplied from the hydraulic pump 10 by a control valve (not shown) in the hydraulic valve unit 20. When the elevating cylinder 21 is extended and retracted, the balance rod 22 moves back and forth, and the swing arm 25 is connected to the elevating cylinder 21. The rear wheels 2, 2 move up and down in the same direction by the same amount with respect to the aircraft, and the aircraft is moved up and down. When the rolling cylinder 27 is extended and contracted, the right and left rear wheels 2 and 2 move up and down with respect to the body by the same amount in the opposite direction, and the body is inclined right and left.

A planting depth adjusting lever 57 is provided to change the planting depth of the seedlings by adjusting the starting point of the rotation of the grounding plate 28, which is in contact with the ridge, up and down with respect to the body.

Next, the configuration of the planting portion 1b will be described. The lower part of the planting part transmission case 30 transmitted from the traveling part transmission case 7 is fixed to the upper surface of the connecting frame 13,
The base of the first planting transmission case 31 is fixed to the upper part of the planting part transmission case 30, and the base of the second planting transmission case 32 is further fixed to the tip of the first planting transmission case 31. . The first planting transmission case 31 and the second planting transmission case 32 are connected to an operation mechanism of the seedling planting device 5 described later. The seedling planting tool 60 described later of the seedling planting device 5 is located behind the traveling section 1a. Also, a seedling mounting table 55 described below is attached to the upper frame 34 having the base fixed to the planting section mission case 30, and the seedling supply device 4 and the seedling mounting table 55 described below are positioned above the seedling mounting tool 60. Are located.

As shown in FIG. 3, the input shaft 30a of the planting section transmission case 30 projects forward from the lower end of the case 30.
By being inserted into the TO take-out part 7a, it is operatively connected to a shaft (not shown) in the PTO take-out part 7a on the traveling unit side. In addition, the planting section mission case 30
Are detachably attached to the connection frame 13 by bolts 35,... For this reason, by removing the bolts 35,... And pulling out the input shaft 30a from the PTO take-out part 7a, the entire planting part 1b can be removed from the traveling part 1a, and maintenance of the planting part 1b can be easily performed.

In the side view, the planting section transmission case 30 is provided rearward and upward from the connecting frame 13, and the first planting transmission case 31 is connected to the planting section transmission case 3.
The second planting transmission case 32 is provided horizontally downward from the lower end of the first planting transmission case 31. With this configuration,
A space for the balance rod 22 to move is secured below the second planting transmission case 32 without making the longitudinal length of the body longer than necessary.

Further, in plan view, the planting section transmission case 30 is provided at the right end of the connecting frame 13 (in the traveling direction of the transplanter. Hereinafter, all right and left sides refer to the side toward the transplanter). , And extends upward through the right space of the machine control mechanism formed between the lifting cylinder 21, the balance rod 22, and the right connecting rod 26. The first planting transmission case 31 is arranged on the left side of the planting section transmission case 30, and the second planting transmission case 32 is arranged on the left side of the first planting transmission case 31. Since the right space portion is wider than the left space portion by the amount that the rolling cylinder 27 is not provided, it is preferable to arrange the planting section transmission case 30 on the right side.

Further, by arranging the planting section transmission case 30, the first planting transmission case 31, and the second planting transmission case 32 separately on the left and right, the weight balance on the left and right is improved.

The seedling supply device 4 includes a plurality of seedling supply cups 4.
Turntable 41 in which 0,... Are arranged at equal intervals on the circumference
It has. As shown in the bottom view of FIG. 4, the turntable 41 is disposed at a position slightly to the right of the left and right centers of the body. The turntable 41 is rotatably provided on a support plate 42 fixed to a turntable support frame 56 with the central axis 43 as a fulcrum. A ratchet wheel 45 is attached to the central shaft 43, and a ratchet pawl 46 urged in a direction to mesh with the teeth of the ratchet wheel 45 is attached to a ratchet arm 47 rotatably fitted to the central shaft 43. The ratchet arm 47 and the seedling supply drive arm 49 that operates integrally with the front link support arm 67B described later include the seedling supply drive rod 5.
0, and the seedling supply drive arm 49 swings to turn the turntable 41 to the seedling planting apparatus 5.
Rotate intermittently by the mounting interval of the seedling supply cups 40,.

At the bottom of each seedling supply cup 40, a shutter 52,. A C-shaped shutter closing rod 53 whose front side is slightly cut off to the left in plan view is provided at a height in contact with the bottom of the seedling supply cup 40, and a seedling supply position corresponding to the cut portion of the shutter closing rod 53. The shutter 52 of the seedling supply cup 40 located at the position P is opened by its own weight or the weight of the seedling, but the shutters 52,... Of the other seedling supply cups 40,.

As will be described later in detail, a shutter opening / closing arm 56A whose base is rotatably supported by the turntable support frame 56 is located below the seedling supply cup 40 located at the seedling supply position P. The protrusion 56D (FIGS. 5 and 6) provided on the connecting member 61C (FIG. 6) of the cup-shaped seedling planting tool 60 in which the arm 56A comes near the top dead center in the locus indicated by the dashed line X in FIG. When pressed and rotated, the shutter 52 located at the seedling supply position P can be opened.

When the shutter 52, which can be opened and closed, at the bottom of each seedling supply cup 40, is opened, the seedling is supplied to a cup-shaped seedling planting tool 60 having a pointed tip of the seedling planting device 5. The cup-shaped seedling planting tool 60 moves along the trajectory indicated by the dashed-dotted line X in FIG. 1, receives the seedling from the seedling supply cup 40 near its top dead center, opens near its bottom dead center, and turns the seedling inside the ridge. Plant.

At the front side of the turntable 41, a seedling mounting table 55 on which seedling raising trays are mounted one by one is provided.
The seedling mounting table 55 is attached to the frame 34 supported on the upper end of the planting section transmission case 30.

The seedlings on the seedling tray placed on the seedling mounting table 55 are manually supplied to the seedling supply cups 40. When the seedling supply cup 40 containing the seedling moves to the seedling supply position due to the rotation of the turntable 41, the shutter 5
2 is opened and the seedling falls into the seedling attachment 60 of the seedling planting apparatus 5.

A plurality of seedling supply cups 40 each containing a seedling are transported on the turntable 41 along a predetermined transport route. At this time, the turntable 41 supplies the seedling in synchronization with the operation of the seedling planting apparatus 5. It has already been described that the shutter 52 is opened at the cut portion of the shutter closing rod 53 by intermittently rotating the cups 40. Separately from the above mechanism, a perspective view of FIG. 7A and a plan view of the machine body bottom view of FIG.
D is not shown), and a shutter opening / closing arm 56 </ b> A that comes into direct contact with the components of the seedling planting apparatus 5 is provided in synchronization with the operation of the seedling planting apparatus 5). That is, in order to reliably control the opening and closing of the shutter 52 of the seedling supply cup 40 by the shutter opening / closing arm 56A, the connecting member 61C (which connects the ends of 61A and 61B to each other) is a part of the component of the seedling planting apparatus 5. The shutter opening / closing arm 56A that opens the shutter 52 of the seedling supply cup 40 in contact with the projection 61D (FIGS. 5 and 6) attached to the member (FIG. Attached.

The shutter opening / closing arm 56A is rotatably connected to the back surface of a plate member 56B attached to the turntable support frame 56, and is normally attached to the shutter 52 in a direction to close the shutter 52 by a torque spring 56C provided on the back surface of the plate member 56B. It is configured to be urged and the urging force is regulated by the stopper 56 </ b> D, and stop immediately below the shutter 52.

However, when the projection 61D protruding from the connecting member 61C of the seedling planting device 5 passes near the top dead center of the trajectory X of the seedling planting device 5, it comes into contact with the shutter opening / closing arm 56A and opens and closes the shutter. The arm 56 </ b> A is pushed and pivots about its base in a direction to open the shutter 52 from a position directly below the shutter 52.

A projection 61 which is a component of the seedling planting apparatus 5
By providing the shutter opening / closing arm member 56A that comes into contact with D, the shutter 52 of the seedling supply cup 40 can be opened at the movement timing directly connected to the seedling planting apparatus 5.

If a mechanism capable of changing the mounting position of the projection 61D to the connecting member 61C is provided, the timing of contact with the shutter opening / closing arm 56A can be changed. Adjustable to the appropriate inner position.

As described above, the shutter 52 is controlled to be opened and closed in synchronization with the movement of the seedling planting apparatus, so that the worker can easily plant seedlings.

Also, it is desired to close the shutter 52 immediately after the seedlings pass. However, if the seedlings are large seedlings or bare seedlings, it takes time to pass the seedlings, so it is necessary to keep the bottom pig open for a long time. is there. Therefore, FIG. 8 (FIG. 8 (a) is a bottom view of the seedling supply device 4, FIG. 8 (b) (a diagram viewed from the direction of arrow A in FIG. 8 (a)), and a state where the lid 52 is being opened. 8A is different from FIG. 8A) is a side view of the end of the shutter closing bar 53 on the closing side of the shutter 52). The length of time that the shutter opens can be adjusted by making it extendable.

An auxiliary closing rod 53b is attached to the end of the end 53a of the shutter closing rod 53 via a detachable arm 53c in a hollow portion of the end 53a. The adjustment of the extension position of the end portion 53a is performed by adjusting the fixing position of the elongated position fixing members 53d and 53e attached to the closing bar end portion 53a and the auxiliary closing bar 53b with bolts and nuts in the elongated holes.

Thus, the shutter 5 of the seedling supply cup 40
2, the timing of closing can be adjusted, and the adaptability of large seedlings and naked seedlings is improved.

When the seedling passes through the shutter 52 at a high speed, the shutter opening / closing arm 56A comes directly under the shutter 52 while the seedling cannot pass through the shutter 52 in the case of a large seedling or the like. Therefore, when a particularly large seedling is conveyed and dropped at a high speed, the shutter opening / closing arm 56A may hit the seedling before the seedling cannot pass through the shutter 52 portion. Therefore, when the shutter 52 moves in the closing direction as shown in the perspective view of FIG.
By providing the projection 52a that contacts the shutter opening / closing arm 56A at the tip of the shutter 52, the opening / closing arm 56A does not hit the seedling that is passing through the shutter 52. It is desirable that the stopper 56D be provided with an elastic body 56E so as to reduce the impact when the stopper 56D comes into contact with the shutter opening / closing arm 56A. In this way, large seedlings fall smoothly even when planted at high speed.

The shutter 52 is not limited to the large seedling, and the shutter 52 hits or is caught by the inner wall of the seedling supply cup 40, and moves smoothly downward in the seedling supply cup 40 to move the shutter 5
In some cases, it did not pass through part 2.

Therefore, as shown in FIG.
0, an inner cup 40 'having no bottom plate is provided, and the seedling is transferred from the seedling tray into the inner cup 40', and when the shutter 52 is opened, the lower region within the range of the bottom surface of the inner cup 40 'is seeded. Falls. In this case, when the shutter 52 is opened, the seedlings fall in the lower region into the area inside the inner cup 40 ', so that when the seedlings fall, the shutter opening / closing arm 56A cannot return to that position. Therefore, the shutter opening / closing arm 56A does not pass through the inner cup 40 'and hit the seedling falling on the seedling planting apparatus 5.

In this way, a structure that does not hinder the falling of the seedling can be obtained, and the seedling can smoothly fall through the shutter 52.

Conventionally, as shown in FIG. 11 (c), when bare seedlings (earthless seedlings) are planted in a field using the present seedling transplanter, the seedling supply cup 40 fixed to the seedling supply device 4 is used. The seedlings were put into it and transplanted to the field by opening the shutter 52. However, as shown in FIG.
In some cases, the root was caught or caught between the seedling and the shutter 52, and the shutter 52 did not open even when the shutter closing rod came to the cut portion.

Therefore, the seedling supply cup 40 shown in FIG.
A ring-shaped member 52b is attached to the shutter 52 as shown in the side view of the part and the shutter cross-sectional view of FIG. 11B, so that the root easily fits inside the ring-shaped member 52b even when the soilless seedling is put in the supply cup 40. In other words, the planting property is improved without being pinched or caught by the shutter 52 even with soilless seedlings.

The perspective view of FIG.
As shown in the partial cross-sectional view of the seedling supply cup of (b), a seedling transplanter that can easily plant bare seedlings (earthless seedlings) may be used.

The seedling transplanter has a bottomless seedling supply cup 40 fixed on a turntable 41 of a seedling supply cup 40, and a portion corresponding to the seedling supply cup 40 below the turntable 41 is partially provided. A bottom plate 52 'provided with a ring-shaped concave groove having a notch is provided. A lid 56F having substantially the same diameter as the seedling supply cup 40 is provided at the top of the shutter opening / closing arm 56A located below the cutout of the bottom plate 52 '.

When the seedling supply cup 40 rotates while sliding on the bottom plate 52 ', the soilless seedlings in the seedling supply cup 40 can smoothly slide on the bottom plate 52' provided with the ring-shaped concave groove. When the cover 56F of the shutter opening / closing arm 56A comes off from the cutout portion of the bottom plate 52 'of the seedling supply cup 40 with the rotation of the arm 56A, the seedling falls into the seedling planting apparatus 5. In addition, the example of the structure in which the shape of the seedling guide 76 of the seedling planting apparatus 5 is extended upward from the examples shown in the other drawings.

When planting light or large seedlings such as soilless seedlings using the seedling transplanter shown in FIG. 3 or the like, FIG. 13 (FIG. 13 (a) is a side view, and FIG. As shown in (plan view), a seedling supply cup striking mechanism 83 for giving an impact by hitting the seedling supply cup 40 is attached, so that the soilless seedlings that have entered the seedling supply cup 40 fall securely into the seedling planting device 5. Can be done.

The seedling supply cup striking mechanism 83 strikes the seedling supply cup 40 provided at a portion corresponding to the cut portion of the shutter closing rod 53, and a striking plate 83a, a striking plate 8
A spring 83b for urging the striking plate 83a toward the seedling supply cup 40 provided at the base of 3a. Further, an attached ring 41 a having a diameter larger than that of the turntable 41 is provided on a portion of the turntable 41 other than the portion corresponding to the seedling supply cup 40.

The striking plate 83a is connected to the turntable 41.
Is rotated and comes to the part where the attached ring 41a is missing, the striking plate 83a hits the seedling supply cup 40 by the urging force of the spring 83b. As a result, when the shutter 52 is opened, the side portion of the seedling supply cup 40 is hit, and even a soilless or large seedling can be easily and reliably dropped from the seedling supply cup 40 into the seedling planting apparatus 5.

14 (FIG. 14 (a) is a side view and FIG.
(B) is a plan view of the turntable portion. However, a spring 84 extending in the horizontal direction and having a length in contact with the seedling supply cup 40 can be provided on the upper frame 34 supporting the seedling mounting table 55. In this case, the turntable 41 is
Seedling supply cup 4 while turning in the direction of arrow A shown in FIG.
When the spring 84 that is in contact with the spring 84 is deformed and the seedling supply cup 40 that is in contact with the spring 84 is fully rotated, the spring 84 attempts to restore the original shape. Seedling supply cup 4 on the downstream side
0 is hit hard by the spring 84. Therefore, the seedling planting device 5 can easily remove the soilless or large seedlings in the seedling supply cup 40.
It can be reliably dropped inside.

As shown in the schematic side view of FIG. 15 (b), if the bare seedlings are large and the leaves are firm, the seedling supply cup 40 has a trumpet-shaped upper part to facilitate the placement of the seedlings. By using, even a bare seedling can be stored in the seedling supply cup 40. However, it is difficult to pass through the seedling supply cup 40, and even in the seedling planting apparatus 5, it may not be possible to reliably drop the seedling to an appropriate position.

Therefore, as shown in the schematic side view of FIG. 15A, the shape of the seedling supply cup 40 is made narrow at the middle part, so that the seedlings can be surely dropped into the seedling planting apparatus 5. it can.

The left side of the turntable 41 and the rear part of the left rear wheel 2 are spaces A for a worker to perform a seedling replenishing operation while walking in accordance with the progress of the body.
When the worker performs the seedling replenishing operation while walking in the space A, the ridge between the pressure-reducing wheel 80 (FIG. 2) and the pressure-reducing wheel 80 can be seen from the gap between the turntable 41 and the steering handle 6. The seedling replenishment work can be performed while monitoring the attachment status.

The seedling planting apparatus 5 is provided with a cup-shaped seedling planting tool 60 having a sharp lower end as shown in FIG. 5 which is an operation view from a side view and FIG. 6 which is a plan view. The seedling attachment 60 includes a front member 60a and a rear member 60b, and a front member rotation shaft 6 located behind the seedling attachment 60.
Front member mounting arm 62 rotatably supported by 1A
A, 62A are integrally attached with a front member 60a, and rear member mounting arms 62B, 62B rotatably supported by a rear member rotation shaft 61B located in front of the seedling planting tool 60.
The rear side member 60b is integrally attached to the rear side. Therefore, both members 60a, with the pivots 61A and 61B as fulcrums,
As the 60b rotates, the lower portions of the two members 60a, 60b open and close. Slots (not shown) formed in the front member mounting arm 62A and the rear member mounting arm 62B.
The front side member 60a and the rear side member 60b rotate in conjunction with each other by the interlocking pin 63 loosely fitted in.

Leg 62aA of front member mounting arm 62A
And between the leg 62aB of the rear member mounting arm 62B,
A spring 64 that urges the front member 60a and the rear member 60b toward the closing side is stretched. This seedling attachment 60
Performs a predetermined operation by the following operation mechanism.

A rear link support arm 67A is rotatably attached to a support portion 33a (FIG. 1) projecting upward from the second planting transmission case 32, and a rear link 68A having a base pivotally attached to the support arm 67A. At the rear end, the front member rotation shaft 6
1A is connected. In the middle part of the rear link 68A,
A rear link drive arm 69A provided at the rear end of the second planting transmission case 32 is connected. A front link support arm 67B is rotatably attached to the planting section transmission case 30, and a rear member rotation shaft 61B is connected to a rear end of a front link 68B whose base is pivotally attached to the support arm 67B. ing.

A rear link drive arm 69 provided at the rear end of the first planting transmission case 31 is provided at an intermediate portion of the front link 68B.
B is connected. When the driving force of the engine 9 is transmitted via the transmission and the drive arms 69A and 69B rotate, the rear link 68A and the front link 68B swing up and down while changing the position of the base part back and forth, and The attachment 60 moves up and down with a fixed posture.

An opening / closing arm 71 is provided at the base of the rear link 68A.
Is rotatably mounted, and the front end of the opening / closing arm 71 and the front member mounting arm 62A are connected by an opening / closing rod 72. An opening / closing cam 73 that rotates integrally with the rear link drive arm 69A is attached to an intermediate portion of the rear link 68A. A roller 74 as a cam follower for the opening / closing cam 73 is provided on the opening / closing arm 71.

When the seedling attachment 60 rises from a position near the bottom dead center of its movement locus X (FIG. 1), the opening and closing cam 7
3 engages the roller 74. When the opening / closing cam 73 is engaged with the roller 74, the opening / closing rod 72 is pulled, and the front member 60a and the rear member 60b rotate so that their lower ends are opened in conjunction with each other. Opening / closing cam 7
When the roller 3 is not engaged with the roller 74, the lower ends of the front member 60a and the rear member 60b are closed by the tension of the spring 64.

The seedling attachment 60 moves along the trajectory indicated by the dashed-dotted line X in FIG. 1, and the seedling is dropped and supplied by the seedling supply device 4 at the top dead center. The supplied seedling is guided into the seedling planting tool 60 through a tubular seedling guide 76 attached to the front member rotating shaft 61A and the rear member rotating shaft 61B. The seedling attachment 60 holding the seedlings descends, and at the lower dead point of the locus indicated by the dashed line X, the lower part of the seedling attachment 60 pierces the topsoil portion of the ridge to form a hole for seedling transplantation. At substantially the same time, the lower ends of the front member 60a and the rear member 60b of the seedling attachment 60 are opened, and the held seedling is released into the seedling transplanting hole. The seedling attachment 60 rises as it is, and when it rises to near the top dead center, the seedling attachment 60 closes.

The second planting transmission case 32 is located on the left side of the seedling planting device 5. Further, a tubular seedling guide 76 (FIG. 6) for guiding the seedlings falling above the seedling attaching tool 60 is attached integrally with the seedling attaching tool 60. The second planting transmission case 32 prevents the worker from interfering with the planting device 5 during the plant supply operation.

A pair of left and right pressure-reducing wheels 80, 80 are provided behind the seedling planting position. This crushing wheel 80,
Numeral 80 is attached diagonally so that the lower part thereof becomes closer to each other, and is urged downward by a weight 81 loosely fitted to a rod 92. After the seedlings have been planted, the soil around the seedling transplanting holes has collapsed to refill the holes and lightly crush the traces.

The rod 92 is attached to the main frame 1
4 is attached to the rear end of a swing frame 87 that is vertically swingably supported by a support frame 86 fixed to the front and rear intermediate portion. When the pressure-reducing wheels 80, 80 move up and down in accordance with the unevenness of the ridge surface, the grounding plate 28 detects the upper surface of the ridge by the vertical movement of the pressure-reducing wheels 80, 80, and the hydraulic valve via the sensing link mechanism 29. It is transmitted to an elevating hydraulic valve (not shown) in the unit 20 and operates the elevating cylinder 21 in a direction in which the angle of the swing frame 87 returns to its original position. This controls the vertical movement of the fuselage so that the height from the upper surface of the ridge to the fuselage is kept constant.

Further, a pressure-reducing wheel fixing lever 90 is rotatably supported at the rear of the main frame 14, and the pressure-reducing wheel fixing lever 90 fixes the pressure-reducing wheels 80, 80 at a position raised to a non-ground state. is there.

Since the swing frame 87 is disposed on the right side of the body, an operator walking on the left side of the body does not come into contact with the swing frame 87, so that the pressure can be reliably reduced and the body can be raised and lowered. Can be done accurately.

Note that the rolling hydraulic valve in the hydraulic valve unit 20 switches in response to the movement of the pendulum 95 (FIG. 1) for detecting the left-right inclination. Operate as appropriate to control the aircraft to return to left and right horizontal.

The control handle 6 has a substantially U-shape in plan view with both ends extending rearward, and grips 6a, 6
a is attached. At the time of turning or traveling on the road, the operator grips the grips 6a, 6a and steers. The steering handle 6 is provided so as to be shifted to the right from the left and right center of the fuselage. Out of the way when doing

Side clutch levers 100, 100 are provided below the grips 6a, 6a. An operation panel 101 is provided at the base of the steering handle 6.
The operation panel 101 includes a seedling supply device 4 and a seedling planting device 5.
There are provided a planting elevating lever 102 for performing an on / off operation of the planting clutch and a lifting / lowering operation of the machine, and a main clutch lever 103 for performing an on / off operation of the main clutch.

[0070]

According to the present invention, a seedling supply cup (40) is provided.
The bottom (shutter 52) is controlled to open and close in synchronization with the movement of the seedling planting device (5), so that the worker can easily plant seedlings.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter according to an embodiment of the present invention.

FIG. 2 is a plan view of the seedling transplanter of FIG.

FIG. 3 is a perspective view of a connecting portion of a traveling section and a planting section of the seedling transplanter of FIG. 1;

FIG. 4 is a plan view of a turntable of the seedling transplanter of FIG. 1;

FIG. 5 is a side view showing an exercise state of the seedling transplanting device of the seedling transplanter of FIG. 1;

FIG. 6 is a plan view of a seedling planting device of the seedling transplanter of FIG. 1;

7 is a perspective view (FIG. 7 (a)) and a plan view (FIG. 7 (b)) around a seedling supply cup of the embodiment of the seedling transplanter of FIG.
It is.

8 is a plan view (FIG. 8 (a)) of the vicinity of a seedling supply cup and a side view (FIG. 8 (b)) of an end portion of a shutter closing rod in the embodiment of the seedling transplanter of FIG.

FIG. 9 is a perspective view of the vicinity of a seedling supply cup of the embodiment of the seedling transplanter of FIG. 1;

FIG. 10 is a perspective view of the vicinity of a seedling supply cup of the embodiment of the seedling transplanter of FIG. 1;

11 is a side view (FIG. 11 (a)) of the vicinity of a seedling supply cup, a sectional view of a shutter portion (FIG. 11 (b)), and a side view (FIG. 11 (b)) of the embodiment of the seedling transplanter of FIG. c)).

12 is a perspective view (FIG. 12 (a)) of the vicinity of a seedling supply cup and a sectional view of a shutter portion (FIG. 12 (b)) of the embodiment of the seedling transplanter of FIG.

13 is a side view (FIG. 13 (a)) and a plan view (FIG. 13) of the vicinity of a seedling supply cup in one embodiment of the seedling transplanter of FIG.
(B)).

FIG. 14 is a side view (FIG. 14 (a)) and a plan view (FIG. 14) of the vicinity of a seedling supply cup in one embodiment of the seedling transplanter of FIG.
(B)).

15 is a side view (FIG. 15 (a)) near the seedling supply cup and a side view (FIG. 15 (b)) near the conventional seedling supply cup of the embodiment of the seedling transplanter of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vegetable transplanter 1a Running part 1b Planting part 2 Rear wheel 3 Front wheel 4 Seedling supply device 5 Seedling planting device 6 Steering handle 6a Grip 7 Running part transmission case 7a PTO take-out part 9 Engine 10 Hydraulic pump 11 Fuel tank 12 Bonnet 13 Connection frame 14 Main frame 15 Rotating cylinder 16 Running transmission case 17 Front wheel support frame 17a Pivot shaft 18 Front wheel support rod 20 Hydraulic valve unit 21 Lifting cylinder 21a Piston rod 22 Balance rod 23 Mounting member 24 Guide shaft 25 Swing arm 26 Connection rod 27 Rolling cylinder 28 Grounding plate 29 Sensing link mechanism 30 Planting part transmission case 30a Input shaft 31 First planting transmission case 32 Second planting transmission case 33a Supporting part 34 Upper frame 35 Bolt 36 Ridge plan Roller support arm 36a Ridge guide roller support outer arm 36b Ridge guide roller support inner arm 37 Roller rotation shaft support member 38 Set bolt 39 Mounting piece 40 Seedling supply cup 40 'Inner cup 41 Turntable 41a Turntable attachment ring 42 Support plate 43 Center Shaft 44 Reinforcement plate 45 Ratchet wheel 46 Ratchet claw 47 Ratchet arm 48 Rod 49 Seedling supply driving arm 50 Seedling supply driving rod 52 Shutter (bottom) 52 a Projection 52 b Ring-shaped member 52 ′ Bottom plate 53 Shutter closing rod (opening restricting tool) 53 a End Part 53b auxiliary closing rod 53c arm 53d, 53e telescopic position fixing member 55 seedling mounting table 56 turntable support frame 56A shutter opening / closing arm 56B plate 56C torque spring 56D stopper 6E elastic body 56F lid 57 planting depth adjusting lever 60 cup-shaped seedling planting tool 60a front member 60b rear member 61A front member rotation shaft 61B rear member rotation shaft 61C connecting member 61D protrusion 62A front member mounting arm 62aA , 62aB
Leg 62B Rear member mounting arm 63 Interlocking pin 64 Spring 67A Rear link support arm 67B Front link support arm 68A Rear link 68B Front link 69A Front link drive arm 69B Rear link drive arm 71 Open / close arm 72 Open / close rod 73 Open / close cam 74 Roller 76 Seedling guide 80 A pair of left and right pressure reduction wheels 81 Weight 82 Pressure reduction wheel frame 83 Impact mechanism 83a Impact plate 83b Spring 84 Spring 85 Planting depth adjustment lever 86 Support frame 87 Swing frame 88 Interlocking mechanism 90 Pressure reduction wheel fixing lever 92 Rod 95 Pendulum for detecting left-right inclination 100 Side clutch lever 101 Operation panel 102 Planting elevating lever 103 Main clutch lever

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kenji Yasuda 2550 Fukasako, Hirata, Hirata, Mashiki-machi, Kamimashiki-gun, Kumamoto Pref. Iseki Agricultural Machinery Co., Ltd. Engineering Department (72) Inventor Isao Ishida 1 Ehime Pref.

Claims (2)

[Claims] 1. A transport means for transporting a plurality of seedling supply cups each containing a seedling along a predetermined transport path, and an openable bottom of the seedling supply cup only when the transport means is at a predetermined position. In the seedling transplanter, which releases the opening regulation and opens the bottom to drop the seedlings in the seedling supply cup into the seedling planting means below, the seedling transplanter attached to the transporting means. A seedling transplanter, comprising: a seedling supply cup bottom plate opening regulating means capable of adjusting the opening timing of the bottom of the seedling supply cup in conjunction with the movement of the attaching means. 2. The seedling transplanter according to claim 1, wherein the opening restricting device attached to the transporting means is provided with an end expanding / contracting means capable of changing the opening timing of the bottom of the seedling supply cup.