JPH08228540A - Rice transplanter - Google Patents

Abstract

(57) [Summary] [Purpose] The operation lever on the front side of the seedling stand does not project outward when the seedling planting device is divided and stored by changing the posture. [Structure] The lateral outer end of the split body of the seedling planting device is turned around the longitudinal axis of the split body and the displacement of the axial center position of the split plant is directed toward the front side of the traveling machine body 3. , The divided object is moved to the center position side in the left-right direction of the traveling machine body 3 so that the divided seedling placing bases 13L and 13R can be switched to a storage posture in which the upper edges of the divided seedling placing bases 13L and 13R are close to each other.
The protruding direction is set so that the tip ends of the operation levers 23 and 30 that are arranged on the side opposite to the seedling placing surface and that are operated around the lateral axis are directed to the lateral outer ends of the seedling placing table 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice planting apparatus in which a seedling planting device for cutting out a seedling placed on a seedling platform by a planting mechanism and planting it in a field is connected to a rear end of a traveling machine body. More specifically, the present invention relates to a technique for reducing the lateral dimension of a seedling planting device.

[0002]

2. Description of the Related Art Conventionally, as a technique for reducing the lateral dimension of a seedling planting device, there is a technique disclosed in Japanese Utility Model Laid-Open No. 4-113523, and in this conventional example, both end portions of a seedling placing base are The lateral dimension of the seedling stand can be reduced by the folding operation.

[0003]

In a riding-type rice transplanter with eight or more rows, since the lateral dimension of the seedling planting device is large,
A conventional example has also been considered for the purpose of avoiding contact with obstacles when traveling on the road or for keeping the rice transplanter within the lateral width of the bed when carrying the rice transplanter on a truck. However, since the configuration of this conventional example is a configuration in which only both sides of the seedling mounting base are folded, for example, when storing a seedling planting device for multiple row planting of 10 rows or more, a lateral dimension is required. There was room for improvement because it could not be made too small.

For the purpose of eliminating this inconvenience, the seedling planting device is divided at an intermediate position in the left-right direction, the lateral direction of this divided product is switched to the front-back direction, and this divided product is placed at the central position in the left-right direction. It may be possible to switch to a storage posture in which the divided seedling placing stands come close to each other by displacing them. However, the seedling mounting table is equipped with the operation levers for adjusting the planting depth, adjusting the seedling picking amount, etc. on the front side (the side opposite to the seedling mounting surface) so as to project toward the front of the machine. When the seedling planting device is divided into two and the storage posture is changed as described above, during the storage operation, the operation lever may come into contact with the member or the like attached to the front surface of the other seedling stand, which may hinder the storage operation. Conceivable.

An object of the present invention is to reasonably construct a rice transplanter capable of smoothly switching to a storage posture in which the lateral dimension of the seedling planting device is reduced.

[0006]

As described at the beginning, the feature of the present invention is that a seedling planting device for planting seedlings on a seedling platform in a field by a planting mechanism is connected to a rear end of a traveling machine body. In the rice transplanter, the seedling planting device is configured to be separable at an intermediate position in the left-right direction, and the split of the seedling planting device is rotated about a longitudinal axis, and the axial center position is displaced. The lateral ends of the splits are directed to the front side of the traveling machine body, and the divisions are moved to the central position side in the left-right direction of the traveling machine body so that the upper edges of the respective divided seedling placing bases approach each other. It is configured to be switchable to a storage posture, and the tip end side of an operation lever which is arranged on the side opposite to the seedling placing surface of the seedling placing table and which is operated around a lateral axis is directed toward the outer end portion of the seedling placing table. The projecting direction is set so as to move toward, and its action and effect are as follows.

[0007]

According to the above feature, the lateral outer end of the divided piece is directed toward the front side of the traveling machine body by the rotation of the divided piece around the longitudinal axis and the displacement of the axial center position. It is possible to switch to a storage posture in which the split object is moved to the central position side in the left-right direction of the traveling body, and in the present invention, the amount of protrusion of the operation lever to the side of the anti-seedling surface can be made small and seedling planting at the time of storage can be made. When changing the posture of the attachment device, it is possible to avoid contact between the operation lever and the member attached to the other seedling placing surface of the other split seedling placing table, and in the retracted posture, the tip side of the operating lever is in front of the traveling machine body. It does not protrude from the rear end of the seedling planting device in the retracted posture as it is directed toward the side.

That is, even if the length of the operating lever is not shortened by setting the protruding direction of the operating lever, the protruding amount to the side opposite to the seedling mounting surface is reduced to reduce the inconvenience during the storing operation and to reduce the after-storing operation. In the above, the end of the operation lever can be housed inside the seedling planting device.

[0009]

[Effects of the Invention] Therefore, switching to the storage posture for reducing the lateral dimension of the seedling planting device can be smoothly performed without being obstructed by the operation lever provided on the seedling stand, and the operation lever can be operated in the storage posture. The rice transplanter was constructed reasonably so that it would not be operated incorrectly.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an engine 4 is mounted on the front part of a traveling machine body 3 provided with a steering type driven front wheel 1 and a driving type rear wheel 2, and at the rear part of the traveling machine body 3. A hydrostatic stepless transmission 5 to which the power from the engine 4 is transmitted, and a transmission case 6 are arranged,
Further, the driver's seat 7 is arranged in the center of the traveling machine body 3, and the seedling planting device A is connected to the rear end portion of the traveling machine body 3 via the link mechanism 9 driven and moved up and down by the hydraulic cylinder 8. Configure rice transplanter.

An elevating lever 10 is provided on the right side of the driver's seat 7 for controlling the raising and lowering of the plant A for planting seedlings and for turning on and off a planting clutch (not shown), and on the left side of the driver's seat 7. A gear shift lever 11 for operating the continuously variable transmission 5 is provided. In addition, the planted clutch is the transmission case 6
The cutting arm is allowed to cut only when the transmission shaft 12 for transmitting power from the transmission case 6 to the seedling planting device A is in a predetermined rotation phase (see below). Is configured to stop in a posture that avoids contact with the field.

The seedling planting device A has a mat-shaped seedling W placed thereon and a pair of left and right to which the power from the transmission shaft 12 is transmitted, the seedling mounting base 13 having its upper end facing toward the front side of the traveling body 3. Transmission cases 14, 14, a rotary case 16 rotated by power transmitted from the transmission case 14 via a chain case 15, a pair of planting arms 17 provided in the rotary case 16, and a plurality of ground leveling floats 1.
The mat-shaped seedling W is provided with eight fertilizer fertilizers 19 each having eight hoppers, a feeding mechanism, a grooving device, etc.
At the same time when the planting arm 17 cuts out the seedlings from the lower end of the plant and plant them in the field scene, the fertilizer application device 19 supplies fertilizer under the field scene near the planted seedlings. In addition, the rotary case 16, the planting arm 17, and a system for driving them constitute a planting mechanism.

As shown in FIGS. 2 and 3, the front portion of the leveling float 18 is supported on the lower surface of the chain case 15 via a bending / extending link 20, and the lower surface of the chain case 15 has a shaft in a horizontal posture. The rear portion of the leveling float 18 is swingably connected to and supported by the swing end of an arm 22 that is connected to a planting depth adjusting shaft 21 that is rotatable about the core. By locking and fixing the connected operation lever 23 at a predetermined position of the lever guide 24, the ground leveling float 18, that is, the field scene S, and the planting arm 17, that is, the operation trajectory T of the planting claw of the planting arm 17, The planting depth can be adjusted by changing the relative positional relationship of.

A sliding rail 25, which supports the seedling placing table 13 so as to be reciprocally movable in the left-right direction, is connected to the sliding rail 25 so that the sliding rail 25 can be vertically moved along the placing surface of the seedling placing table 13. The shaft member 26 is slidably supported on the chain case 15, and the chain case 15
The upper end of the arm member 28 formed on the seedling amount adjusting shaft 27 which is supported in a horizontal position so as to be rotatable about the axis is engaged with the engaging member 29 on the lower surface of the slide rail 25. A mat-like seedling placed on the seedling stand 13 by setting the level of the slide rail 25 by locking and fixing the operation lever 30 connected to the seedling picking amount adjusting shaft 27 at a predetermined position of the lever guide 31. It is configured so that the relative amount of seedlings can be adjusted by changing the relative positional relationship between W and the operating locus T of the planting claw of the planting arm 17. The operation levers 23 and 30 are used for the seedling table 13
Is swingably supported at an upper position on the front side of the plant, and an intermediate shaft 23B is interposed between the operation lever 23 for adjusting the planting depth and the planting depth adjusting shaft 21 for adjusting the seedling taking amount. An intermediate shaft 30B is interposed between the operation lever 30 and the seedling collection amount adjusting shaft 27.

As shown in FIG. 2, the operation lever 23 for adjusting the planting depth and the operation lever 30 for adjusting the seedling picking amount are arranged near the center position of the seedling planting device A in the left-right direction. ,
By bending and molding the tips 23A and 30A so as to be directed outward in the lateral direction of the seedling planting apparatus A, the operator can look back at the position of the driver's seat 7 or from the side position of the seedling planting apparatus A. The operation levers 23 and 30 are configured to be operated, and the slide rail 25, the planting depth adjusting shaft 21, and the seedling harvesting amount adjusting shaft 27 each have a seedling planting device A as described later. It is configured to be separable at a position in the vicinity of this divided portion so as not to disturb the operation of dividing and switching to the storage posture. Although the sliding rail 25 has a structure that enables simple connection and disconnection, the planting depth adjusting shaft 21,
When the left and right ones of the left and right ones move outward from each other, the seedling collection amount adjusting shafts 27 are naturally divided, and when the left and right ones move inward to each other, they reach a connected state by fitting, and the left and right ones rotate integrally. The structure is adopted (the structure of the connecting part is not described in detail).

As shown in FIGS. 4, 5 and 7, in this rice transplanter, the seedling planting device A is divided into two sections at a central position in the left-right direction. AL, A
R is a frame member 3 that constitutes the divided objects AL and AR
5, the frame member 35 is rotatably supported around the first axis X1 in the vertical posture, and further, the frame member 35 is held in the vertical posture with respect to the main frame 36 provided at the rear end of the link mechanism 9. It is rotatably supported around the second axis X2, and as shown in FIG. 8, in the state where the seedling planting apparatus A is set in the working posture, the first axis X1 is based on the vertical direction. , Second
The upper ends of the respective axial cores X2 are inclined in the direction toward the front side of the traveling machine body 3.

The link mechanism 9 is composed of a top link 9T arranged at an upper portion and a lower link 9L arranged at a lower portion, and is connected to a rolling boss 37 connected to a lower end portion of a vertical frame 9A supporting a rear end thereof. A connecting plate 38 that allows rolling around the rolling axis Y in the front-back orientation
The main frame 36 that supports an upper plate 36A and a lower pipe 36B with respect to the connecting plate 38.
The main pipe 36 is fixed, and a circular pipe shape is provided for the boss member 35A that is rotatably fitted to the second shaft 39 disposed coaxially with the second shaft X2 at the left and right ends of the main frame 36. A frame member 35 is fixedly mounted to rotatably support the frame member 35 around a second axis X2, and the outer ends of the frame members 35, 35 are coaxial with the first axis X1. A square pipe-shaped support frame 42 through a channel-shaped bracket 41 with respect to the first shaft 40 arranged in
This support frame 4 is supported rotatably around the axis X1.
2, the left and right transmission cases 14 and the chain case 15 are fixedly installed.

A screw shaft 43, which is rotationally driven by the power of the left transmission case 14, is provided between the transmission case 14 and a bearing member 44 at the end of the support frame 42 on this side. The lateral feeding mechanism of the seedling placing table 13 is configured by including the moving member 45 that transmits the moving force of the piece (not shown) that is engaged in the spiral groove of the screw shaft 43 to the left divided seedling placing table 13L. In addition, the seedling placing table 13 is a left and right divided seedling placing table 13
When L and 13R are connected by the connecting member D (see FIGS. 9 and 10), the sliding rails 25 and 25 are integrally reciprocated in the lateral direction by the power from the transverse feed mechanism.

A shaft (not shown) to which power from the transmission shaft 12 is transmitted is rotatably supported by the rolling boss 37 coaxially with the rolling shaft core Y. Is formed to the left and right transmission cases 14 and 14 via the bevel case 46, the pair of output shafts 47 and 47 provided in the bevel case 46, the clutch member 48, and the intermediate shaft 49, respectively. Further, the clutch member 48 is configured to be spline-fitted to the output shaft 47 and the intermediate shaft 49, and is configured to separate the output shaft 47 and the intermediate shaft 49 by moving inward as shown in FIG. .

The clutch member 48 is constructed so as to be engaged only when the output shaft 47 and the intermediate shaft 49 are in a specific rotational phase by the engaging operation, and the bevel case 46 receives power from the traveling machine side. A transmission system having a bevel gear (not shown) for branching and outputting to the two output shafts 47, 47 is incorporated, and the intermediate shaft 49 is supported so as to maintain a horizontal posture with respect to the system of the frame member 35. It is configured with a universal joint.

As shown in FIGS. 6A, 6B, and 7,
The second shaft 39 is provided so as not to rotate with respect to the main frame 36,
The first shaft 40 is non-rotatably provided on the frame member 35. A main sprocket 50 is fixedly installed coaxially with the second shaft core X2 at an upper position of the second shaft 39, and a plate-like rotation is provided at an upper end position of the second shaft 39 so as to be rotatable around the second shaft core X2. The moving member 51 is provided. In addition, the bracket 41 is rotatably supported with respect to the first shaft 40, and the driven sprocket 52 is rotated integrally with the bracket 41 and has half the number of teeth of the main sprocket 50. It is arranged coaxially with the first axis X1, and a chain 53 is wound around the main sprocket 50 and the driven sprocket 52.

The left and right rotating members 51, 51 are arranged at a higher level than the left and right frame members 35, 35, and
A boss member 35 that rotatably fits a reinforcing frame 54 to the second shaft 39 at a position on the lower surface side of the frame members 35, 35.
A and the frame member 35 are connected and fixed,
Also, the frame members 35, 35 rotate in conjunction with the rotation,
Further, holding wires 55, 55 are provided between the rotating members 51, 51 and the reinforcing frames 54, 54 in a suspended posture so as to improve the strength of the frame member 35. Further, the upper edge of the rib 54A on the upper surface of the reinforcing frame 54 is attached to the frame member 3
The bottom surface of the reinforcing frame 54 is welded and fixed, and the pair of lower ends is connected and fixed to the front and rear portions of the reinforcing frame 54.

Further, a pair of wires 56, 56 are stretched in an intersecting posture between the left and right rotating members 51, 51 so as to rotate them in opposite directions. In addition, a length adjusting portion 56A for adjusting the length in a screw type is provided at an intermediate portion of the wire 56. Further, a sector gear 57 arranged coaxially with the left second axis X2 is fixedly provided on the frame member 35 side, and a pinion gear 58 meshing with the sector gear 57 is provided on the main frame 36 side, and the pinion gear 58 is provided. An electric motor 59 for driving is provided.

With such a construction, when the seedling planting apparatus A is stored, as shown in FIG. By driving force, the seedling placing table 13 is sent to the left end position and stopped, then the connection of the connecting member D is released and the right seedling placing table 13R is artificially moved to the right moving end. The movement of the divided seedling placing table 13R on the slide rail 28 is blocked by a locking means (not shown) (in this state, as shown in FIG.
The posture of 0 is reached, and the distance between the left and right split seedling placement tables 13R and 13L reaches about 30 cm).

Next, by artificially separating the clutch member 48 and driving the electric motor 59 by a predetermined operation,
Left and right rotating members 51, 51, a pair of wires 56, 56,
By the force from the holding wires 55, 55, the respective frame members 35, 35 are interlocked with each other around the second axis X2, X2,
The outer end side of the bracket 4 rotates toward the rear side, and at the same time as this rotation, the bracket 4 is rotated around the first axis X1, X1.
The system supported by 1, 41 is rotated in the opposite direction to the rotating direction of the frame members 35, 35 at a speed twice as fast as the rotating speed of the frame members 35, 35 by the force from the main sprocket 50, the driven sprocket 52, and the chain 53. That is, the left and right outer ends of the traveling body 3 rotate toward the front side.

When turning to this storage posture, as shown in FIG. 11, although the corner portions 13E, 13E at the upper inner ends of the left and right split seedling placement stands 13L, 13R are close to each other, the split seedling placement stand in plan view. Since the 13L and 13R rotate at positions separated from each other, the rotation is possible while avoiding the contact of the respective corner portions 13E and 13E.

When the divided objects AL and AR reach the storage posture, the driving of the electric motor 59 is stopped (the control operation is not described in detail) and the storage is completed. In this state, as shown in FIG. 12, the left and right split seedling placing bases 13L and 13R are positioned on the sliding rails 25 and 25 close to the side of the traveling machine body 3, and their upper end edges are parallel to each other in a close state. Therefore, the weight of the whole seedling planting apparatus A is moved to the side of the traveling machine body 3 to improve the weight balance of the whole rice planting machine, and the seedling planting apparatus A
Will reduce the lateral dimension of.

Further, in this retracted posture, as described above, the divided seedling placing stands 13L, 13R are switched to the standing posture as shown in FIG. 13 by the rotation about the first axis X1 in the inclined posture. By further reducing the lateral dimension of the seedling planting apparatus A and rotating the frame member 35 around the second axis X2 in the inclined posture as described above, the divided pieces AL, AR are shown in FIG. As a result of lifting the rear side of the traveling body 3 of the above upward, it is possible to reduce the size in the front-back direction in plan view, and further move the center of gravity of the entire rice transplanter further forward to improve the weight balance, Sometimes, the rear end of the seedling planting device A in the retracted posture does not contact the ground.

Further, when the seedling planting apparatus A is switched to the storage posture in this manner, the left divisional AL is provided with the operation lever 30 for adjusting the seedling picking amount, and the right divisional AR is provided with a planting depth. Although the operating levers 23 for adjustment are provided, since the tips of the operating levers 23 are shaped to face the outer side of the seedling planting device A to reduce the amount of protrusion to the front, each operating lever is divided into the other. While avoiding contact with a member or the like attached to the anti-seedling placing surface of the seedling placing table, a smooth storing operation is possible, and in the retracted posture, the dividing surfaces of the divided seedling placing tables 13L and 13R are exposed to the rear side. However, as shown in FIG.
Since the tips of the operation levers 23 for adjusting the planting depth and the operation levers 30 for adjusting the seedling take-off amount are directed forward, the tips of the operation levers 23, 30 are from the rear end of the seedling planting device A. It does not project backwards.

Then, when the seedling planting apparatus A in this retracted posture is restored to the working posture, the electric motor 59 is rotated in the reverse direction so that the divisions AL and AR are rotated in the opposite directions to the above-mentioned results. By reverse operation, the seedling planting device A in the retracted posture
Is changed to the working posture, and when the posture changing causes the seedling planting apparatus A to reach the posture shown in FIG. 10, the driving of the electric motor 59 is stopped (the control operation is not described in detail), and the clutch member 48. By connecting the right divided seedling placing table 13R to the left divided seedling placing table 13L and connecting the respective 13L and 13R with the connecting member D, a workable state is reached.

[Other Embodiments] In addition to the above embodiments, the present invention is
For example, the present invention can be configured by bending and molding the tip of an operation lever for operating a lock member that connects the left and right divided seedling placing bases to each other. It can be configured to perform a retracting operation, and can also be applied to a seedling planting device with 10 rows or more.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

FIG. 2 is a plan view of an operation lever and an operation system in the seedling planting device.

FIG. 3 is a side view of an operation lever and an operation system in the seedling planting device.

FIG. 4 is a plan view of the transmission system of the seedling planting device in a working posture.

FIG. 5 is a plan view of the transmission system of the seedling planting device in the retracted posture.

FIG. 6A is a plan view of the storage operation system in the work posture, and FIG. 6B is a plan view of the storage operation system in the storage posture.

FIG. 7 is a rear view of the main frame and a part of the frame member with a part notched.

FIG. 8 is a side view showing the postures of the first axis and the second axis.

FIG. 9 is a plan view of the rice transplanter with the seedling stand placed at the end of the sliding rail.

FIG. 10 is a plan view of the rice transplanter with the seedling placing table being divided.

FIG. 11 is a plan view of a rice transplanter in which the seedling planting device is divided and rotated.

FIG. 12 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 13 is a rear view of the seedling planting device in a stored state

FIG. 14 is a side view of the seedling planting device in the retracted posture.

[Explanation of symbols]

 3 Traveling machine 13 Seedling platform 13L, 13R Divided seedling platform 23, 30 Operation lever A Seedling planting device AL, AR Divided plant W Seedling

Claims (1)

[Claims] 1. A seedling (W) placed on a seedling stand (13)
A seedling planting device (A) which is connected to the rear end of the traveling machine body (3) for performing an operation of cutting out the seedlings with a planting mechanism and planting them in the field, wherein the seedling planting device (A) is It is configured so that it can be freely divided at an intermediate position in the left-right direction, and it also has a split (A)
L) and (AR) are rotated about the longitudinal axis of the longitudinal axis and the axial center position is displaced, so that the lateral outer ends of the divisions (AL) and (AR) are moved to the traveling machine body (3). Point it to the front side,
The divided objects (AL) and (AR) are moved to the central position side of the traveling machine body (3) in the left-right direction, and the divided seedling placing bases (1)
3L) and (13R) are configured to be switchable to a storage posture in which upper end edges of the seedlings are close to each other, and are arranged on the side opposite to the seedling placing surface of the seedling placing table (13) and operated around a lateral axis. Set the tip side of the operation levers (23) and (30) to the seedling placing table (1
3) A rice transplanter in which a projecting direction is set so as to face the outer end portion.