JPH08238010A - Rice transplanter - Google Patents

Abstract

PURPOSE: To provide a rice transplanter capable of preventing the touch of a seedling-planting apparatus with the rear wheels of the machine body when they are stored in a separated posture. CONSTITUTION: This rice transplanter is constructed in such a manner as to freely take a storage posture. In the storage posture, the lateral outer edges of divided parts AL, AR are turned around to face the front side of a mobile machine body, and the parts AL, AR are laterally moved toward the central positions of the mobile machine body, and the right and left upper top edges of dividable seedling-holding table 13L, 13R approach to each other in a parallel posture by the rotation around longitudinal axes of the divided parts AL, AR of a seedling-planting apparatus and the dislocation of the axes. Protectors 46 for the both ends of sliding rails 28 attached outside the outer edges of the sliding rails 28 are placed at the position close to the upper parts of the rear wheels 2 of the mobile machine body in the storing posture of the seedling- planting apparatus A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device for cutting seedlings placed on a seedling platform supported reciprocally along a slide rail in a horizontal posture by a planting mechanism and planting them in a field. Relates to a rice transplanter connected to the rear end of a traveling body, and more particularly 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. Further, in the case where the seedling planting device is divided into two and is switched to the storage posture, bringing the divided object closer to the traveling machine body makes the entire rice transplanter smaller in the storage posture. However, if the split object is brought close to the traveling aircraft side, if the aircraft greatly tilts during traveling, or if the aircraft vibrates greatly, the end of the divided seedling placing table or the seedling placing table should be removed. There is room for improvement because it is possible that the ends of the sliding rails that it supports may come into contact with the rear wheels and be damaged.

An object of the present invention is to reasonably construct a rice transplanter that does not bring a rear wheel into contact with a seedling planting device that is divided and set in a storage posture.

[0006]

The features of the present invention are, as described at the beginning, planting seedlings of a seedling platform supported reciprocally along a sliding rail in a field by a planting mechanism. In a rice transplanter in which the device is connected to the rear end of the traveling machine body, the seedling planting device is configured to be separable at an intermediate position in the left-right direction, and the splitting of the seedling planting device around the longitudinal axis is Rotation,
And, by the displacement of the axial center position, the lateral outer end of the divided body is directed to the front side of the traveling machine body, and the divided body is moved to the center position side in the lateral direction of the traveling machine body, respectively. Of the split seedling placing table, the upper end edges of which can be switched to a storage posture in which the upper edges are close to each other, and a protective member arranged outside the outer ends of the sliding rails so as to protect both ends of the sliding rails. The seedling planting device is located in a position close to the upper part of the rear wheel of the traveling body in the retracted posture, and the action and effect are as follows.

[0007]

According to the above feature, when the seedling planting device is divided and stored, the lateral direction of the divided objects is along the front-back direction of the traveling machine body, and the respective divided objects whose postures are changed in this way are Since the vehicle body is displaced to the central position in the lateral direction, the lateral dimension of the seedling planting device can be reduced.
Further, since the protective member for protecting the sliding rail is located above the rear wheel in the retracted posture, the split object may be moved to the rear wheel side by, for example, shaking of the aircraft while the seedling planting device is set in the retracted posture. Even if it moves, the protection member comes into contact with the rear wheel, so that the end of the sliding rail or the divided seedling mounting table does not come into direct contact with the rear wheel.

[0008]

Therefore, even if the traveling machine body is greatly shaken in the state where the seedling planting device is divided and set in the retracted posture, the rice transplanter does not bring the seedling planting device into contact with the rear wheels. It was reasonably constructed.

[0009]

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 to control the raising and lowering of the seedling planting device A and to turn on and off a planting clutch (not shown). A gear shift lever 11 for operating the continuously variable transmission 5 is provided. It should be noted that the planted clutch corresponds to the shift 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 the upper end of the seedling placement stand 13 is inclined to the front side of the traveling body 3, and the left and right to which power from the transmission shaft 12 is transmitted. A pair of transmission cases 14, 14, this transmission case 14
A rotary case 16 that is rotated by the power transmitted from the chain case 15 to the rotary case 16, a pair of planting arms 17 provided on the rotary case 16 one by one, and a plurality of ground leveling floats 18 for eight-row planting. , A mat-like seedling W that is equipped with a fertilizer applicator 19 having a hopper, 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 FIG. 3, FIG. 4 and FIG. 6, this rice transplanter is configured so that it can be divided into two sections of four rows at the center position of the seedling planting apparatus A in the left-right direction. AL, A
R is a frame member 2 that constitutes the divided objects AL and AR
The frame member 20 is rotatably supported about the first axis X1 in a vertical position with respect to 0, and the frame member 20 is in a vertical position with respect to the main frame 21 provided at the rear end of the link mechanism 9. It is rotatably supported around the second axis X2, and as shown in FIG. 7, 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 part and a lower link 9L arranged at a lower part, and is connected to a rolling boss 22 connected to a lower end part of a vertical frame 9A supporting respective rear ends thereof. Connecting plate 23 that can be freely rolled around the rolling axis Y in the front-back orientation
The main frame 21 that supports an upper plate 21A and a lower pipe 21B with respect to the connecting plate 23.
And a circular pipe shape with respect to the boss member 20A that is rotatably fitted to the second shaft 24 arranged coaxially with the second shaft core X2 at both left and right ends of the main frame 21. A frame member 20 is fixedly mounted to rotatably support the frame member 20 about a second axis X2, and the outer ends of the frame members 20 and 20 are coaxial with the first axis X1. The support frame 27 in the shape of a square pipe is attached to the first shaft 25 arranged in
This support frame 2 is rotatably supported around the axis X1.
7, the left and right transmission cases 14 and the chain case 15 are fixedly provided, and the seedling stand 13 is supported on the upper surfaces of the pair of chain cases 15 and 15 of the divided products AL and AR, respectively. Left and right sliding rails 28, 28 are provided.

A screw shaft 29, which is rotationally driven by the power of the left transmission case 14, is provided between the transmission case 14 and a bearing member 30 at the end of the support frame 27 on this side. The lateral feed mechanism of the seedling placing table 13 is configured by including the moving member 31 that transmits the moving force of the top (not shown) that is engaged in the spiral groove of the screw shaft 29 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. 8 and 9), the sliding rails 28 and 28 are integrally reciprocated in the lateral direction by the power from the lateral feed mechanism.

A shaft (not shown) to which power from the transmission shaft 12 is transmitted is rotatably supported by the rolling boss 22 coaxially with the rolling shaft core Y, and the power of the shaft is generated. Is formed to the left and right transmission cases 14 and 14 via the bevel case 32, the pair of output shafts 33 and 33 provided in the bevel case 32, the clutch member 34, and the intermediate shaft 35, respectively. Further, the clutch member 34 is configured to be spline-fitted to the output shaft 33 and the intermediate shaft 35, and is configured to separate the output shaft 33 and the intermediate shaft 35 by moving inward as shown in FIG. .

The clutch member 34 is constructed so as to be engaged only when the output shaft 33 and the intermediate shaft 35 are in a specific rotational phase by the engaging operation, and the bevel case 32 receives the power from the traveling machine side. A transmission system having a bevel gear (not shown) for branching and outputting to two output shafts 33, 33 is installed, and the intermediate shaft 35 is supported so as to maintain a lateral posture with respect to the system of the frame member 20. It is configured with a universal joint.

As shown in FIGS. 5A, 5B, and 6,
The second shaft 24 is provided so as not to rotate with respect to the main frame 21,
The first shaft 25 is non-rotatably provided on the frame member 20. A main sprocket 36 is fixedly installed coaxially with the second shaft core X2 at an upper position of the second shaft 24, and a plate-like rotation is provided at an upper end position of the second shaft 24 so as to be rotatable around the second shaft core X2. The moving member 37 is provided. Further, the bracket 26 is rotatably supported with respect to the first shaft 25, and is rotated integrally with the bracket 26, and a driven sprocket 38 having half the number of teeth of the main sprocket 36 is provided. The chain 39 is arranged coaxially with the first axis X1, and a chain 39 is wound around the main sprocket 36 and the driven sprocket 38.

The left and right rotating members 37, 37 are arranged at a higher level than the left and right frame members 20, 20, respectively.
In addition, the frame members 20, 20 are molded with a small diameter on the tip side,
Further, the reinforcing frame 20B is connected and fixed to the lower surface to improve the strength of the frame member 20 itself. Further, a pipe member 40 is fixedly installed in a penetrating state at an end portion of the frame member 20 in an inclined posture, and a rod 41 inserted into the pipe member 40 is inserted.
The lower end of the rotating member 3 is fixed in a retaining state, and the leading end of the rotating member 3
By connecting to the rotating members 37, 37, the rotating members 37, 37 suspend and support the frame members 20, 20, and at the same time, the rotating members 37, 37 are interlocked with the rotation of the frame members 20, 20.
Is configured to perform a rotating operation of.

Further, a pair of wires 42, 42 are stretched in an intersecting posture between the left and right rotating members 37, 37 so as to rotate them in opposite directions. A length adjusting portion 42A for adjusting the length in a screw type is provided in the middle portion of the wire 42. Further, a sector gear 43 arranged coaxially with the left second axis X2 is fixedly provided on the side of the frame member 20, and a pinion gear 44 that meshes with the sector gear 43 is provided on the side of the main frame 21 to drive the pinion gear 44. The electric motor 45 is provided.

As shown in FIG. 3, a pipe formed into a shape in which both ends of the supporting frame 27 are fixedly connected to each other and the other end of the supporting frame 27 extends further outward than the outer end of the slide rail 28. A protective member 46 made of a material is provided at the left and right positions of the seedling planting device so that the outer end of the sliding rail 28 can be protected. When the seedling planting apparatus A is switched to the retracted posture, the protective member 46, as shown in FIG. 2 and FIG.
It is arranged in consideration of the storage operation of the seedling planting apparatus A so as to be close to the rear upper side. Further, the pair of chain cases 15 on both sides of the split surface is provided with a connecting frame 49 which is swingable around a vertical support shaft 48 of a bracket 47 attached to one rear end of the chain case 15, and the other chain case 15 By providing the connecting frame 49 with the connecting portion 49A that is detachably connected to the first connecting piece 50 attached to the rear end, when the seedling planting apparatus A is in the working posture, the connecting frame 49
The chain case on the side opposite to the split surface of the chain case 15 configured to maintain the work posture by connecting the first connecting piece 50 and the first connecting piece 50 via the connecting portion 49A and swingably supporting the connecting frame 49. When the rear end of 15 is also provided with the second connecting piece 51 having the same shape as the first connecting piece 49, when the seedling planting apparatus A is switched to the retracted posture, the first connecting piece 50 as shown in FIG. From the connecting frame 49, and the connecting frame 49 is rotated by 180 degrees around the support shaft 48.
The connecting portion 49A can be connected to the connecting piece 51.

With such a construction, when the seedling planting apparatus A is stored, as shown in FIG. 8, the seedling planting apparatus A is first raised to a level at which it is separated from the ground. 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. Locking means (not shown) prevents movement of the divided seedling placing table 13R on the slide rail 28 (see FIG. 9 in this state).
And the distance between the left and right split seedling placement tables 13R and 13L reaches about 30 cm).

Next, the clutch portion 34 is artificially disengaged, and the electric motor 45 is driven by a predetermined operation, so that the forces from the left and right rotating members 37, 37 and the pair of wires 42, 42 respectively. The frame members 20, 20 are interlocked with each other to rotate around the second shaft cores X2, X2 so that the outer end side thereof is directed to the rear side, and at the same time, the first shaft core X is rotated.
1, the system supported by the brackets 26, 26 around X1 is driven by the forces from the main sprocket 36, the driven sprocket 38, and the chain 39 to move the frame members 20, 20 at a speed twice that of the frame members 20, 20. The direction opposite to the direction of rotation, that is, the left and right outer ends thereof rotate toward the front of the traveling machine body 3.

When turning to this storage posture, as shown in FIG. 10, 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 45 is stopped (the control operation is not described in detail) and the storage is completed. In this state, as shown in FIG. 11, the left and right split seedling placing bases 13L and 13R are in positions close to the traveling machine body 3 side on the sliding rails 28 and 28, 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 tables 13L and 13R are switched to the standing posture as shown in FIG. 12 by the rotation about the first axis X1 in the inclined posture. As shown in FIG. 2, the lateral dimension of the seedling planting apparatus A is further reduced, and the frame member 20 is rotated about the second axis X2 in the inclined posture as described above.
As a result of lifting the rear side of the traveling body 3 of the divided objects AL and AR upward, it is possible to reduce the dimension in the front-back direction in plan view, and further move the center of gravity of the entire rice transplanter forward to improve the weight balance. At the same time, the rear end of the seedling planting device A in the retracted posture does not contact the ground during traveling.

As shown in FIG. 2, the protective member 46 for protecting the sliding rail 28 is located above the rear wheel 2 in the state where the seedling planting apparatus A is switched to the retracted posture as described above. Even when the divided object may move to the rear wheel 3 side due to the swing of the machine body 3 in the state where A is set to the retracted posture, the protection member 46 contacts the rear wheel 2 to cause the sliding rail 2 to move.
8. The divided seedling placing bases 13R and 13L are not brought into direct contact with the rear wheels.

When the seedling planting apparatus A in this storage posture is restored to the working posture, the electric motor 45 is rotated in the reverse direction so that the divisions AL and AR rotate in the opposite direction to the above-mentioned result. By reverse operation, the seedling planting device A in the retracted posture
Is changed to the work posture, and when the seedling planting apparatus A reaches the posture shown in FIG. 9 by this posture change, the electric motor 4
5 is stopped (control operation is not described in detail), the clutch member 34 is connected, the right divided seedling placing table 13R is brought close to the left divided seedling placing table 13L, and 13L and 13R are connected to each other. A workable state is reached by connecting with D.

[Other Embodiments] In addition to the above embodiments, the present invention is
It is possible to configure the protective member to be removable,
It is also possible to apply a seedling planting device for planting 10 rows or more.

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

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

[Fig. 2] Side view of the seedling planting device in the retracted posture

FIG. 3 is a plan view of the transmission system of the seedling planting device in a working posture.

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

FIG. 5A is a plan view of a storage operation system in a work posture, and FIG. 5B is a plan view of a storage operation system in a storage posture.

FIG. 6 is a rear view of the main frame and a part of the frame member with a part notched.

FIG. 7 is a side view showing the postures of the first axis and the second axis.

FIG. 8 is a plan view of the rice transplanter with the seedling stand placed at the end of the sliding rail.

[Figure 9] Plan view of rice transplanter with divided seedling mount

FIG. 10 is a plan view of a rice transplanter in which the seedling planting device is divided and rotated.

FIG. 11 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 12 is a rear view of the seedling planting device in a stored state.

[Explanation of symbols]

 2 Rear wheel 3 Traveling machine 13 Seedling placement platform 13L, 13R Split seedling placement platform 28 Sliding rail 46 Protective member A Seedling planting device AL, AR Divided product W Seedling

Claims (1)

[Claims] 1. A seedling (W) placed on a seedling placing table (13) supported reciprocally along a sideways sliding rail (28) is cut out by a planting mechanism and planted in a field. A rice transplanter in which the planting device (A) is connected to the rear end of the traveling body (3), the seedling planting device (A) being configured to be split at an intermediate position in the left-right direction, Split device (A) with attachment (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,
At the same time, the divided objects (AL) and (AR) are moved to the central position side in the left-right direction of the traveling machine body (3) so that the upper edges of the divided seedling placing stands (13L) and (13R) come close to each other. The sliding rail (2
The rear wheel of the traveling machine body (3) is provided with a protective member (46) arranged outside the outer ends of the sliding rails (28) so as to protect both ends of the traveling body body (3) in the retracted posture of the seedling planting device (A). A rice transplanter located near the top of (2).