JP3401358B2 - Rice transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation of cutting a seedling placed on a seedling placing table in the lateral direction of the seedling placing table and cutting it out from the lower end edge by a planting mechanism and planting it in a field. Regarding the rice transplanter that connects the seedling planting device to the rear end of the traveling machine,
Specifically, it relates to a technique for reducing the lateral dimension of the 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 configured to be freely separable at an intermediate position in the left-right direction, and is rotated around the axial center in a vertical posture so as to switch the lateral direction of each divided object to the front-back direction. It is conceivable that the division is configured to be movable, and the division is supported by a swingable arm or the like so as to displace the whole division to the central position in the left-right direction. However, in the conventional rice transplanter, as shown in Japanese Utility Model Publication No. 57-109717, in order to improve the balance when the seedling placing table is moved in the left and right directions, the rear end of the lifting link and the like on the side of the aircraft are improved. A spring is provided between the member and the seedling stand, and the seedling planting device is divided into two parts as described above, and the posture is changed to the storage position. It is possible that the action of hinders storage.

An object of the present invention is to rationalize a rice transplanter that can switch a seedling planting device to a storage posture by division without being obstructed by a spring for improving the balance when the seedling placing table is moved left and right. There is a point in configuring.

[0006]

The features of the present invention are, as described at the beginning, planting seedlings on a seedling placing table in a field by a planting mechanism as the seedling placing table moves laterally. In a rice transplanter in which the device is connected to the rear end of the traveling body, the seedling planting device is configured to be split at an intermediate position in the left-right direction,
Rotation of the divided parts of the seedling planting device around the longitudinal axis, and
By this 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 central position side in the left-right direction of the traveling machine body to divide the respective divisions. The upper edge of the seedling stand is configured to be able to switch to a storage posture in which the upper edges are close to each other, and a spring that improves the left-right weight balance when the seedling stand moves laterally during planting operation is a member on the traveling machine side. And the divided seedling placing bases, respectively, and further, the both end positions of the spring are determined so that the length of this spring is substantially the same before and after storage.
And, the effects are as follows.

[0007]

According to the above-mentioned characteristic (claim 1), by dividing the seedling planting device, rotating about the vertical axis center, and displacing this vertical axis center position, the divided parts of the seedling planting device in the lateral direction. The outer edge of the seedlings reaches the front side of the traveling body, and the upper edge of the divided seedling placing table comes close to each other. Since the length of the spring for improving the left-right weight balance hardly changes when moving to, the spring force does not act on the split seedling placement table in the retracted posture.

In other words, according to the present invention, the seedling planting device can be switched to the storage posture in which the size in the lateral direction is reduced, and
In this retracted posture, the biasing force acting on the split seedling placing base from the spring connected to the seedling placing base is not increased, and the retracted posture can be maintained in a reasonable state.

Further, according to the second aspect, since the divided object changes its posture to the work posture side by the biasing force of the spring, for example, when the seedling planting device is restored from the storage posture to the work posture, the work is performed. Even if the person does not apply an artificial operation force in the storing direction, the divided object naturally moves to the working posture, and the lock operation for holding the divided object in the working posture can be performed easily.

[0010]

Therefore, the rice transplanter is rationally constructed so that the seedling planting device can be switched to the retracted posture by division without being obstructed by the spring for improving the balance when the seedling placing table is moved left and right. (Claim 1).

Particularly, in the case where the biasing force of the spring acts even in the restoring direction even a slight amount, it is possible to suppress the displacement of the divided object in the separating direction in the working posture and to facilitate the handling (claim 2). ).

[0012]

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). 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 planting arm of the seedling planting apparatus A (described later) is allowed to cut only when the transmission shaft 12 that transmits power from the transmission case 6 to the seedling planting apparatus A is in a predetermined rotation phase. 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 its upper end side is inclined to the front side of the traveling machine body 3, and the left and right sides 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 which is rotated by the power transmitted from the chain case 15 to the rotary case 16, a pair of planting arms 17 provided in 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. 4, FIG. 5 and FIG. 7, this rice transplanter is configured so that it can be divided into two sections at a central position of the seedling planting device 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. 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 part and a lower link 9L arranged at a lower part, with respect 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
The L and 13R are connected by the connecting member D (see FIGS. 9 and 10), so that the power from the transverse feed mechanism causes the slide rails 28, 28 to integrally reciprocate laterally in the lateral direction.

A shaft (not shown) to which the power from the transmission shaft 12 is transmitted is rotatably supported by the rolling boss 22 coaxially with the rolling shaft Y. 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. 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 power from the traveling machine body 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. 6A, 6B, and 7,
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, and
A boss member 20 for externally rotatably fitting the reinforcing frame 40 to the second shaft 24 at a position on the lower surface side of the frame members 20, 20.
A and the frame member 20 are connected and fixed together,
Also, the frame members 20 and 20 are rotated in association with the rotation of the frame members 20,
Further, holding wires 41, 41 are provided between the rotating members 37, 37 and the reinforcing frames 40, 40 in a suspended posture so as to improve the strength of the frame member 20. Further, the upper edge of the rib 40A on the upper surface of the reinforcing frame 40 is attached to the frame member 2
It is welded and fixed to the bottom surface of 0.

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 axial center X2 is fixedly provided on the frame member 20 side, and a pinion gear 44 that meshes with the sector gear 43 is provided on the main frame 21 side, and the pinion gear 44 is driven. The electric motor 45 is provided.

As shown in FIG. 3, the anti seedling surfaces of the right and left portions (left and right divided seedling stage) and coil type over the vertical frame 9A of the bracket 46 and the seedling table 13 of the link mechanism 9 spring By interposing 47, 47, the left-right weight balance of the seedling placing table 13 is improved when the seedling placing table 13 is moved in the left-right direction. The springs 47, 47 are set such that the springs 47 are slightly extended when the seedling planting device 13 is switched to the retracted position as described later.

With such a construction, when the seedling planting apparatus A is stored, as shown in FIG. The seedling placing table 13 is set to a central position in the left-right direction by a driving force and stopped, and then the connection of the connecting member D is released to artificially move the right divided seedling placing table 13R to the moving end on the right side. The movement of the split seedling placement table 13R on the slide rail 28 is blocked by a locking means (not shown) (in this state, the posture shown in FIG. 10 is reached, and the left and right split seedling placement tables 13R, 1
The distance between each of the 3L reaches about 15 cm).

Next, by artificially separating the clutch member 34 and driving the electric motor 45 by a predetermined operation,
Left and right rotating members 37, 37, a pair of wires 42, 42,
By the force from the holding wires 41, 41, the respective frame members 20, 20 are interlocked with each other, around the second axis X2, X2,
The outer end side of the bracket 2 rotates toward the rear side, and at the same time as this rotation, the bracket 2 is rotated around the first axis X1, X1.
The system supported by 6, 26 is driven by the force from the main sprocket 36, the driven sprocket 38, and the chain 39 at a speed twice as fast as the rotational speed of the frame members 20, 20 and is opposite to the rotational direction of the frame members 20, 20. That is, the left and right outer end portions of each of the divided pieces rotate toward the front side of the traveling machine body 3.

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.

Further, as shown in FIGS. 2 (a) and 2 (b), at the time of this rotation, the left divided seedling placing table 13L and the vertical frame 9 are provided.
The spring 47 arranged between A and A is in a slightly expanded state, and after this rotation, as shown in FIG. 12, the right divided seedling placing table 13R is moved to the inner end side, and the sliding rail is moved. The storage position is reached by blocking the movement on 28 by a locking means (not shown), and the length of the spring 47 arranged between the vertical frame 9A and the right divided seedling placing table 13R is on the left side. The length of the spring 47 is equal to that of each spring 4
The state in which the biasing forces of 7, 47 act in the returning direction is maintained.

Then, when the divided objects AL, AR reach the storage posture, as shown in FIG. 13, the upper edges of the left and right divided seedling placing bases 13L, 13R reach a posture in which they are parallel to each other, so that the seedlings are planted. The size of the attachment device A in the horizontal direction is reduced.

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. 14 by the rotation about the first axis X1 in the inclined posture. The lateral dimension of the seedling planting device A is further reduced, and as described above, by rotating the frame member 20 around the second axis X2 in the inclined posture, as shown in FIG. As a result of lifting the rear side of the traveling machine body 3 upward, the rear end of the seedling planting apparatus A in the retracted posture does not come into contact with the ground during traveling.

When the seedling planting apparatus A in this retracted posture is restored to the working posture, the right divided seedling placing table 13R is moved to the rear end position on the slide rail 28 and locked by the locking means. By rotating the electric motor 45 in the reverse direction, the respective divided products AL, AR rotate in the opposite direction to the above-mentioned direction. As a result, the posture of the seedling planting apparatus A in the retracted posture is changed to the working posture by the operation reverse to the above. When the seedling planting apparatus A reaches the posture shown in FIG. 10 by this posture change, the right divided seedling placing table 13R is moved toward the left divided seedling placing table 13L and the connecting members D are used to connect the respective 13L and 13R. It becomes possible to work by connecting them. When the storage posture is switched to the working posture, the urging force of the springs 47, 47 acts in a direction to promote the posture change to the working posture, which enables a smooth restoring operation. , 47 acts to maintain the seedling planting apparatus A in the restored posture in the working posture, so that the connecting operation of the connecting member D and the like can be easily performed.

[Other Embodiments] In addition to the above embodiments, the present invention is, for example, a state in which the divided pieces of the seedling placing table are set at the left and right end positions on the sliding rails at the time of dividing the seedling planting device, that is, the division. It is also possible to apply to a rice transplanter having a structure in which the seedlings are separated from each other by about 30 cm in the lateral direction and the divided pieces are set to the storage posture.

Further, in the present invention, the biasing force of the spring may be slightly reduced after storage as compared with before storage.
Further, the biasing force may be almost unchanged. Further, the present invention can be configured so that the storing operation is performed by an artificial operation force.

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 structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

FIG. 2A is a plan view showing the arrangement of springs in a working posture. (B) is a plan view showing the spring posture in the retracted posture

FIG. 3 is a front view showing the arrangement of springs in a working posture.

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 a storage operation system for a work posture. (B) is a plan view of the retracting operation system in the retracted 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 in the center 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 that has finished turning the divided seedling planting device.

FIG. 13 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 14 is a rear view of the seedling planting device in a stored state.

FIG. 15 is a side view of the seedling planting device in the retracted posture.

[Explanation of symbols]

3 traveling aircraft 13 seedling stand 13L, 13R split seedling stand 47 spring A seedling planting equipment AL, AR division W seedling

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01C 11/02 A01B 73/06

Claims (2)

(57) [Claims] 1. A seedling (W) placed on a seedling stand (13)
The rear end of the traveling machine body (3) is equipped with a seedling planting device (A) that cuts from the lower end edge of the seedling platform (13) with a planting mechanism and plants it in the field along with the lateral movement of the seedling platform (13). The seedling planting device (A) is connected to the seedling planting device (A) so that the seedling planting device (A) can be split at an intermediate position in the left-right direction, and
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,
Further, 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 respective divided seedling placing stands (13L) and (13R) come close to each other. The springs (47), (47), which are configured to be switchable to the storage posture and which improve the left-right weight balance when the seedling placing table (13) is moved laterally during the planting operation, are members on the traveling machine body side. And the divided seedling placing bases (13L) and (13R), respectively. Further, the springs (47) and (47) have springs of substantially the same length before and after storage. (47),
Rice transplanter with both ends of (47). 2. The spring (4) when the divided objects (AL), (AR) are restored from the retracted posture to the working posture.
7) and (47) so that the spring (4
7) and (47) are set at both ends, and the urging direction is set so that the increased urging force directs the divided parts (AL) and (AR) toward the work posture. The rice transplanter according to claim 1.