JPH0425933Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of a seedling platform device in a walking type or riding type rice transplanter.

[Conventional technology]

In recent walking-type and riding-type rice transplanters, seedling mats are placed side-by-side on the surface of a seedling stand that is tilted so that the lower end is located in front of the moving machine, or conversely, the lower end is located in the rear. A seedling receiving frame with an L-shaped cross section is provided at the lower end of the seedling table, and the surface of this seedling receiving frame supports the lower edge of the seedling pine placed on the seedling table and allows the seedlings to fall. I try not to. Then, as the seedling platform is moved laterally in appropriate pitches, the seedling planting claws of the plurality of vertically swinging planting mechanisms in the seedling planting device are connected to the seedling take-out opening formed by cutting out the seedling receiving frame. It is configured to swing up and down in unison between the seedling tray and the field, and the seedlings are divided into individual plants from the seedling pine on the seedling platform using the seedling claws and then planted in the field. There is.

When this type of seedling platform is moved horizontally, the seedling platform moves horizontally relative to the seedling receiving frame.
The lower edge of the seedling pine on the seedling tray is pressed against the surface of the seedling receiving frame, causing lateral displacement, which may cause the lower edge of the seedling pine to collapse, and furthermore, there is a risk that not enough seedling pine can reach the seedling outlet. The number of seedlings per plant is uneven or missing.

As a prior art to eliminate such drawbacks, Japanese Utility Model Publication No. 48-19063 discloses a method that surrounds both the front and back sides of the seedling receiving frame, excluding the seedling outlet, at the lower end of the seedling tray. An endless body is wrapped around and disposed, one part of the endless body is connected to the vertical rib of the seedling platform, and the endless body is rotated as the seedling platform moves laterally, so that the working surface of the endless body is A device has been disclosed in which the lower edge of the seedling pine in contact with the (outer peripheral surface) is configured to move horizontally smoothly.

[Problem that the invention attempts to solve]

In the prior art, the endless body is in the shape of a wide belt, and the pulleys around which the endless body is wound and supported at both ends of the seedling take-out port are formed in the shape of a parallel cylinder.

Therefore, when the seedling planting claw passes through the seedling take-out port, its outer surface is in a state extremely close to the outer circumferential surface of the endless body on the outer periphery of the pulley. The seedling claws still have mud attached to them from when the seedlings are divided or when they are pushed into the muddy surface of the field. Therefore, when the seedling planting claw passes through the pulley location, mud gets in between the seedling planting claw and the outer periphery of the endless body, causing friction, and furthermore, the passing direction of the seedling planting claw and the movement of the endless body Since the directions intersect with each other at approximately right angles, the flexible endless body has the disadvantage that it is easily damaged and easily worn out.

The present invention aims to solve the above problems.

[Means for solving problems]

In order to achieve the above object, the present invention forms a seedling retrieval opening for taking out seedlings with a seedling planting claw in a seedling receiving frame opposite to the lower end of a seedling platform that can freely reciprocate in the left and right directions of the body of a rice transplanter; The seedling receiving frame is provided with a wrapping end guide body of an endless body that is wrapped around both the front and back sides of the seedling receiving frame excluding the seedling take-out port, and the endless body can be rotated back and forth from side to side together with the seedling platform. In the seedling mounting stand device, each of the plurality of endless bodies is formed into a narrow strip shape, and the winding end guide body has an outer circumferential surface of the winding portion of each of the narrow strip-shaped endless bodies. A guide groove is formed to guide the seedling planting nail in the passing direction without protruding.

[Functions and effects of the invention]

With this structure, when the seedling claw passes through the seedling take-out opening, the outer circumferential side surfaces of the wrap-around end guide bodies located on both the left and right sides are in a position close to the outer surface of the seedling claw, and the outer surface of the seedling claw The mud adhering to the winding end guide body is scraped off by the outer circumferential side surface or corner of the wrapping end guide body. As a result, the outer circumferential surface of each narrow endless body guided by a guide groove recessed from the outer circumferential surface of the wrapped end guide body is rubbed by the adhesion of mud.
You can avoid the situation of wear and tear.

Therefore, according to the present invention, even if each endless body is narrow, it is difficult to wear out and durability is improved.

〔Example〕

Below, we will explain the drawings of an embodiment in which the present invention is applied to a seedling stand in a riding rice transplanter.
In the figure, 1 indicates a traveling aircraft, and the traveling aircraft 1
consists of a body frame 2, a pair of left and right front wheels 3, 3 that support the front part of the body frame 2, and a pair of left and right rear wheels 4, 4 that support the rear part of the body frame 2. The upper surface is equipped with a control seat 5 and a steering handle 6, and the lower surface of the vehicle body frame 2 is equipped with a transmission case 7 for driving and changing gears.
The two rear wheels 4, 4 are attached to the rear ends of chain cases 8, 8 extending rearward from both left and right side surfaces of the transmission transmission case 7, and the engine mounted on the front upper surface of the vehicle body frame 2. 9 to both front wheels 3 via the traveling transmission transmission case 7.
, and is configured to drive both rear wheels 4 to travel, and at the rear of the traveling body 1 is a multi-row planting device (in this embodiment, an 8-row planting device) seedling planting device 10 connected to a parallel link mechanism. 11 so that it can be moved up and down.

The seedling planting device 10 includes a planting case 12, a planting mechanism 13 with vertically swinging seedling claws 14 attached to both left and right sides of the planting case 12, and a planting mechanism 13 attached to the lower surface of the planting case 12. The seedling planting unit 17 is constituted by four seedling planting units 17 arranged in parallel, each consisting of a floating float 15 and a seedling mounting stand 16 supported on the upper surface of the planting case 12.

As is conventionally known, the seedling platform 16 in the seedling planting device 10 is configured to be reciprocated laterally at right angles to the forward direction of the traveling body 1, and is loaded on its upper surface. Seedling Matsuto placed 18
It is provided with vertical feeding mechanisms 19, 19 for vertically feeding the seedlings toward the lower end of the seedling table 16.

In the part facing the lower end of this seedling stand 16,
A seedling receiving frame 21 having an L-shaped cross section extending in the lateral direction of the seedling mounting table 16 is provided, and this seedling receiving frame 21 is attached to the planting case 12 and placed at a location corresponding to each of the planting mechanisms 13. A seedling take-out port 22 is provided through which the seedling claw 14 of the planting mechanism 13 passes downward from the upper surface of the seedling platform 16.

On the other hand, the seedling table 16 has hollow longitudinal ribs 2 spaced apart by a dimension h2 approximately equal to the width of the seedling mats 18 so that a plurality of seedling mats 18 can be placed in parallel.
3 are provided protrudingly to divide the area.

Therefore, each longitudinal rib 23 of the seedling stand 16 is
By arranging the seedling platform 16 so that it can reciprocate horizontally by a distance h1 between the seedling take-out openings 22, 22 located adjacent to each other on the left and right, the seedling platform 16 can be moved horizontally, for example. When the left end position is located, the left side plate 23a of each vertically long rib 23 is close to the left side of the seedling take-out port 22 at the left position, and when the seedling platform 16 is at the right end position, the right side plate 23a of each vertically long rib 23
b is close to the right side of the seedling take-out port 22 at the right position, so that the entire horizontal width h2 of the seedling pine 18 can pass through the 22 places of the seedling take-out port.

Reference numerals 24 and 24 denote a pair of outlet guide fittings disposed on the left and right sides of each seedling outlet 22, and each outlet guide fitting 24 is connected to the bottom plate 21a of the seedling receiving frame 21.
a guide plate portion 25 that comes into contact with the guide plate portion 25;
The wrapping end guide body 26 is integrally formed with a wrapping end guide body 26 that stands upright from the end of the seedling receiving frame 21. They are arranged approximately in parallel. Moreover, between the left and right guide plate parts 25, 25, the seedling planting claw 14
passes through, and each wrapping end guide body 26 guides the wrapping end of the endless body 20 that is wrapped so as to surround both the front and back sides of the seedling receiving frame 21 except for the seedling take-out port 22. A position adjustment part 27 is provided between the left and right outlet guide fittings 24, 24 and the seedling receiving frame 21 to allow each outlet guide fitting 24 to move along the longitudinal direction of the seedling receiving frame 21. In other words, the width of the seedlings to be planted is adjusted.

One embodiment of the position adjustment section 27 is shown in FIGS. 4 and 6.
As shown in the figure. That is, this wrapped end guide body 2
6 includes a support plate 2 along the back surface of the upright piece 21b.
8 is extended, and long groove holes 29, 29 are bored in the support plate 28 along the longitudinal direction of the seedling receiving frame 21, and the upright piece 21b of the seedling receiving frame and the bolt 30 are tightened through the long groove holes 29. By attaching the left and right guide plate parts 2
5, 25 opposing inner surfaces 25a, 25a interval dimension l1
It is used to adjust the length of the

In place of the above embodiment, the position adjustment section 27 may be configured so that the left and right guide fittings 24, 24 are connected by a turnbuckle or by a telescoping cylinder filled with fluid.

When arranging a pair of left and right seedling guide plates 32, 32 that hang down from the seedling outlet 22 toward the field scene 31 at the location of each seedling outlet 22 in the seedling receiving frame 21, Each seedling guide plate 3 is provided on the bottom surface of each outlet guide fitting 24.
A reinforcing plate 3 with an L-shaped cross section that is attached by welding to the upper end of 2.
4 and 34 are each fastened to the guide plate portion 25 with bolts 33. Each of the seedling guide plates 32 is made of stainless steel, and rubber plates 35, 35 are respectively stretched on the opposing inner surfaces thereof.

Further, the endless body 20 is formed in the shape of an endless belt with a flat cross section or an endless narrow rope shape (circular cross section in the embodiment), and the winding end guide body 26 has a plurality of endless bodies 20. A plurality of guide grooves 36, 36, 37, 3 for winding and guiding
7. Form a depression.

At this time, as shown in FIG. 4, the depth of both guide grooves 36 and 37 is increased so that the outer peripheral surface of the endless body 20 wrapped around the wrapping end guide body 26 is aligned with the outer surface of the seedling claw 14. The facing portions are formed so as not to protrude outward from the outer circumferential surface of the winding end guide body 26. In other words, the outer circumferential side of the wrapping end guide body is in a position close to the outer surface of the passing seedling planting claw, and the outer circumferential surface of the endless body 20 is in a position away from the outer surface of the passing seedling planting claw. It forms.

With this configuration, when the seedling planting claw passes through the seedling take-out opening, the outer circumferential side surfaces of the wrap-around end guide bodies located on both the left and right sides are in a position close to the outer surface of the seedling planting claw, and the seedling planting claw The mud adhering to the outer surface is scraped off by the outer peripheral side surface or corner of the wrapped end guide body. As a result, it is possible to avoid a situation in which the outer circumferential surface of the narrow endless body guided by the guide groove recessed from the outer circumferential surface of the wrapped end guide body is rubbed by the adhering mud and is worn out.

Therefore, even if the endless body is narrow, it is less likely to wear out and has the effect of improving durability.

Moreover, the recess depth dimension e1 of these plurality of guide grooves 36, 36 and the recess depth dimension e2 of the guide grooves 37, 37 can be formed to be different.

As the left and right positions of the pair of outlet guide fittings 24, 24 are changed, the pair of left and right winding end guide bodies 26, 26 required for winding the endless body 20 changes.
The left and right distance of changes. Therefore, if the depth of the guide grooves is the same, if the distance between the left and right winding end guide bodies 26, 26 is long, it will be difficult to wind around both the left and right winding end guide bodies 26, 26. Although the required circumferential length of the endless body 20 will be different, if the depths of the guide grooves are made different as described above, if the distance between the left and right winding end guide bodies 26 is long. In this case, the endless bodies 20 having the same circumferential length can be used by fitting the endless bodies 20 into the deep guide grooves 37, 37, and when the distance is short, fitting the endless bodies 20 into the shallow guide grooves 36, 36. I can do it.

As shown in FIG. 9, the pair of left and right guide pieces 38, 38 provided on the back side of the upright piece 21b of the seedling receiving frame 21 is a contact portion 38a formed by bending a round bar downward into an L-shape. 38a, each of the endless bodies 20
A tension is applied so as to draw it toward the back side of the upright piece 21b of the seedling receiving frame 21.

Base end mounting plate 39 of both guide pieces 38, 38
The upright piece 21 is inserted through the left and right longitudinal slots 40.
By fixing the bolt 41 to b, the contact portion 38 of both guide pieces 38, 38 with the endless body 20
By changing the distance h3 between a and 38a, it is possible to adjust the slack of the endless body 20 caused by changing the positions of the left and right winding end guide bodies 26, 26.

In order to adjust the slack of the endless body 20, the base ends of the two guide pieces 38, 38 are rotatably pivoted to the mounting plate 39, and the two guide pieces 38, 38 are supported by a spring to receive the seedlings. The seedling receiving frame 2 may be constructed so as to be biased toward the back side of the upright piece 21b of the frame 21, or the two guide pieces 38, 38 may be made of leaf springs.
The structure may be such that it is biased towards the back side of the first rising piece 21b.

Furthermore, depending on the height of the seedling pine 18, for example, as shown in FIG.
By positioning the endless bodies 20, 20 in the guide grooves 36, 36 located at low positions with respect to the seedling pine 18, the height at which the pair of upper and lower endless bodies 20, 20 comes into contact with the lower edge of the seedling pine 18 is increased. To reduce the collapse of the lower edge of a seedling pine 18 which moves laterally by leaving a proper distance vertically.

On the contrary, for the seedling pine 18 having a high dimension t2, the endless body 2 is placed in the guide grooves 37, 37 located at a high position.
0 and 20, it is possible to reduce the collapse of the lower edge of the seedling pine 18 that moves laterally with a small number of endless bodies 20.

In addition, each endless body 20 and the vertically long rib 23 are engaged with each other by appropriate means, so that the outer circumferential working surface of the endless body 20 also moves horizontally in accordance with the horizontal movement of the seedling stand 16.

For example, as shown in FIGS. 10 to 12, a movable rib 42 is slidably inserted into the lower end of the vertically long rib 23 having a downward U-shaped cross section, and the lower end surface of the movable rib 42 is A pair of upper and lower fitting grooves 43,
43 is recessed, while the pair of upper and lower fitting grooves 4
Between 3 and 43, there is an inward locking claw part 4 facing each other.
4 and 44 are provided integrally.

Then, the circumferential length of the endless body 20 is formed to be approximately four times the distance between the left and right winding end guide bodies 26, 26, and the endless body 20 is folded in half, and both left and right ends of the endless body 20 are folded in half. When the portions 20a, 20a are locked to the left and right locking claw portions 44, 44, one endless body 20 can constitute an endless body with two upper and lower strips. Moreover, both ends 20a, 20a of the endless body are
Since the locking claws 44 can slide while being locked at 44 locations, when an unreasonable force is applied in the longitudinal axis direction of the endless body 20, the locking claws 44 may be damaged or the endless body may slide. 20 can be prevented from being cut.

Further, since the cross-sectional portions of the endless body 20 are fitted into the pair of upper and lower fitting grooves 43, 43 on the lower end surface of the movable rib 42, the movable rib 42 can be moved along the surface of the upright piece 21b of the seedling receiving frame 21. When the movable rib 42 moves laterally, the lower end surface of the movable rib 42 can be brought close to the surface of the upright piece 21b to a gap smaller than the cross-sectional diameter of the endless body 20.

Figures 13 and 14 show the winding end guide body 2.
Another example of 6 parts is shown, in which rotating rollers 45 with pins 46 are inserted into a part of the bottom surface of the guide grooves 36 and 37 on the outer periphery of the winding end guide body 26 so that the rotating rollers 45 are exposed respectively. It is something.

In this configuration, during rice planting work, if the seedling mat 18 is placed on the top surface of the seedling platform 16 and the wheels 3 and 4 are driven with the float 15 grounded on the field 31, the machine will move straight, Planting mechanism 1
3, the seedlings are divided one by one from the seedling pine 18 on the seedling platform 16 with the seedling claws 14, and a plurality of rows (in this example, 8
Seedlings can be planted along the rows.

In this case, as shown in FIG. 1, for example, from a state in which the seedling stand 16 is wrapped around the endless body 20 so that each vertically long rib 23 thereof is located near the end guide body 26, the right direction arrow A When moving to , the endless body 20 engages with the locking claws 44, 44 of the movable rib 42 fitted into the vertically long rib 23, and the endless body 20 is forcibly driven, so that both of them move laterally, At this time, the lower edge portion of the seedling pine 18 comes into contact with the working surface of the endless body 20, and accordingly, the seedling pine 1
The lower edge of 8 can be moved without being destroyed.

Next, when it is reversed at the right end position of the lateral movement and the seedling platform 16 moves laterally to the left, the seedling platform 16 and the endless body 20 are simply operated in the opposite left and right direction.
The seedling pine 18 on the seedling platform 16 can move laterally in line with the endless body 20, and no relative shearing force will act on it. The seedlings never fall apart.

Each seedling outlet 2 in the seedling receiving frame 21
A pair of outlet guide fittings 2 to be attached to the left and right sides of 2.
4, 24 are attached to the seedling receiving frame 21 so as to be adjustable in horizontal movement, the left and right opening guide fittings 24,
The width dimension of the planted seedlings defined by the interval l1 between the opposing inner surfaces 25a, 25a of the left and right guide plate parts 25, 25 in 24 can be changed and adjusted to be wider or narrower, and at the same time, the width of each seedling can be changed and adjusted. The winding end guide body 26 of the mouth guide fitting 24 also moves, so that the distance between the winding end guide body 26 and the opposing inner surface 25a of the guide plate parts 25, 25 can always be kept constant, There is no need to adjust the positions of both separately.

On the back side of the seedling receiving frame 21, tension is applied to each endless body 20 by the left and right guide pieces 38, 38 so as to pull it toward the back side of the upright piece 21b of the seedling receiving frame 21, so that both the left and right wrapping ends The endless body 20 does not loosen even if the interval between the section guide bodies 26, 26 is changed, and the endless body 25 having the same circumferential length can be used even when changing the width dimension of the planted seedlings.

Furthermore, unnecessary gaps between the endless body 20 and the back surface of the seedling receiving frame 21 can be reduced, and the upper surface of the planting case 12 and the lower end of the seedling receiving frame 21 can be arranged close to each other.

Also, due to contact with the seedling pine 18, each endless body 2
Mud, roots, etc. adhering to the working surface of the guide piece 38 can be removed by rubbing at the contact portions 38a, 38a of the left and right guide pieces 38 as the endless body 20 alternately rotates in both left and right directions.

Note that if the winding end guide body 26 that supports the rope-like endless body 20 is a pulley-like rotating body,
The rotational movement of the endless body 20 becomes even smoother. It goes without saying that the present invention can also be applied to a walking rice transplanter.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view of the main part of the seedling platform, FIG. , FIG. 4 is an enlarged bottom view of FIG. 3, and FIG.
Fig. 6 is a perspective view of the main part of Fig. 5, Fig. 7 is a plan view of the rice transplanter, Fig. 8 is a side view, and Fig. 9 is a bottom view as seen from - line in Fig. 1. Figure, 10th
The figure is a sectional view taken along the - line of Fig. 3, Fig. 11 is a sectional view taken along the - line of Fig. 10, Fig. 12 is a sectional view taken along the - line of Fig. 10, and Fig. 13 is a portion of the winding end guide body. FIG. 14 is a sectional view taken along the - line in FIG. 13. 1... Traveling body, 3, 4... Wheels, 10... Seedling planting device, 16... Seedling mounting stand, 21... Seedling receiving frame, 1
4... Seedling planting claw, 22... Seedling take-out port, 18... Seedling mat, 23... Vertical rib, 20... Endless body, 2
4...Inlet guide metal fitting, 25...Guide plate part, 2
6... Winding end guide body, 27... Position adjustment part, 42... Movable rib, 43... Fitting groove, 44...
...Latching claw part.

Claims (1)

[Scope of utility model registration request] A seedling retrieval opening for taking out seedlings with a seedling claw is formed in a seedling receiving frame facing the lower end of a seedling stand that can freely reciprocate in the left-right direction of the rice transplanter, and the seedling receiving frame has a
A winding end guide body of an endless body is provided so as to surround both the front and back sides of the seedling receiving frame excluding the seedling take-out opening, and the endless body is associated with the seedling platform so that it can be rotated back and forth from side to side. In the seedling mounting stand device, each of the plurality of endless bodies is formed into a narrow width, and the outer circumferential surface of the winding part of each of the narrow strip-shaped endless bodies is arranged in the winding end guide body in the direction in which the seedling claw passes. A seedling mounting stand device for a rice transplanter, characterized in that a guide groove is formed to guide the seedlings in a non-protruding state.