JPH08130935A - Rice transplanter - Google Patents

Abstract

PURPOSE: To provide a rice transplanter capable of changing a seedling transplanting device into a housing position for minimizing its dimension in the right and left direction and in the longitudinal direction. CONSTITUTION: A seedling transplanting device is constituted separably at the middle position in the right and left direction and the outer end parts of the divided materials AR and AL in the lateral direction are sent to the front side of a traveling machine body 3 by rotation around the center of a longitudinal shaft and moved to the central position side in the right and left direction of the traveling machine body 3. The upper end parts of divided seedling placing bases can be changed to parallel housing positions in a mutually close state. The rear end side of the seedling transplanting device in a housing position is displaced upward by setting the position of the center of a shaft.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a seedling planting device, which cuts out a seedling placed on a seedling platform with a planting mechanism and plants it in a field, to a rear end of a traveling machine body so as to be vertically movable. More specifically, the present invention relates to a technique for reducing the lateral dimension of a seedling planting device when not in operation.

[0002]

2. Description of the Related Art As a technique for reducing the lateral dimension of a seedling planting apparatus as described above, there is one disclosed in Japanese Utility Model Laid-Open No. 4-113523. By making it foldable, the lateral dimension of the seedling placing table can be reduced by folding the both ends of the seedling placing table when not in operation.

[0003]

Since the seedling planting device of the riding type rice transplanter has a large lateral dimension, it is used for avoiding contact with obstacles when traveling on the road or for loading the rice transplanter on a truck. A conventional rice transplanter has been considered so that the lateral dimension of a multi-row planting device such as 8-row planting may be reduced in order to fit it within the width of the bed when it is transported. However, since the configuration of this conventional example is a configuration in which only both sides of the seedling placing base are folded, for example, when storing a seedling planting device for multi-row planting of 10 rows or more, the lateral dimension should be reduced. There was room for improvement because it could not be made too small.

An object of the present invention is to reasonably construct a rice transplanter capable of storing laterally and longitudinally as small a planting planting apparatus as possible even for a multi-row planting apparatus.

[0005]

The first feature of the present invention (Claim 1) is, as described in the beginning, a seedling planting device for planting seedlings on a seedling platform in a field by a traveling machine. In a rice transplanter connected vertically to a rear end of the rice planter, the seedling planting device is configured to be split at an intermediate position in the left-right direction, and each split product is vertically oriented with respect to a frame member. The frame member is supported rotatably around the core, and the frame member
By being supported by a member on the traveling machine body side so as to be rotatable about the axis, the lateral outer end of the divided product is directed toward the front side of the traveling machine body by the rotation about the first axis, and By rotating the frame member around the axis, the split object can be moved to the center position side in the left-right direction of the traveling machine body, and it is possible to switch to the storage posture in which the upper edge of each split seedling stand is parallel in close proximity. Configure, or
The posture of the second axis is set such that the upper end of the posture is inclined toward the front side of the traveling machine body, and the action and effect are as follows.

A second feature of the present invention (Claim 2) is, as described at the beginning, that a seedling planting device for planting seedlings on a seedling platform in a field by a planting mechanism is provided at the rear end of the traveling machine body. In a rice transplanter that is vertically movably connected, the seedling planting device is configured to be split at an intermediate position in the left-right direction, and each split product is rotated laterally about the longitudinal axis of the split product. The outer end portion in the direction is directed to the front side of the traveling machine body, and the divided member is moved to the central position side in the left-right direction of the traveling machine body by rotating the frame member around the second axis, and each divided seedling is placed. The upper edge of the platform is configured to be switchable to a storage attitude in which the upper edges of the bases are close to each other, and the system supports the seedling planting device on the traveling machine body. It is equipped with a posture conversion mechanism that displaces upward, and its action and effect are as follows. It is on the street.

[0007]

According to the first feature described above, when the seedling planting device is to be stored, the split product is rotated about the first axis with respect to the frame member in a state where the seedling planting device is divided.
By rotating the frame member around the second axis, the outer end of the divided object is directed toward the front side of the traveling machine body, and each divided object is located at the center position side in the left-right direction of the traveling machine body. The upper side edges of the divided seedling placing bases are stored in a posture in which the upper edge portions of the divided seedling placing stands are close to each other and are parallel to each other, so that the lateral dimension of the seedling planting device is reduced. At the same time as the turning end moves toward the rear of the fuselage, the second
Since the rear end of the frame member is displaced upward due to the inclination of the axis of the shaft core, the rear end side (rear side of the traveling machine body) of the split object in the retracted posture is lifted upward and seen in plan view. Will further reduce the dimension in the front-rear direction.

Further, according to the second feature, when the seedling planting device is stored, by rotating the respective split products around the longitudinal axis in a state where the seedling planting device is divided,
The outer edges of the divided pieces are directed toward the front side of the traveling machine body, and the respective divided pieces are directed toward the central position side in the left-right direction of the traveling machine body so that the upper edges of the divided seedling placing bases are close to each other. The seedling planting device is stored in a parallel posture to reduce the reduction of the lateral dimension of the seedling planting device, and by operating the posture changing mechanism in this storage posture, the rear end of the divided object in the storage posture is reduced. The side (rear side of the traveling machine body) is lifted upward to reduce the dimension in the front-rear direction in plan view.

[0009]

[Effects of the Invention] Therefore, even with a seedling planting device for multi-row planting, a rice transplanter capable of storing small lateral and longitudinal dimensions was reasonably constructed. In particular, claim 1
Since it is possible to reduce the size in the front-rear direction by changing the axial center posture that allows the seedling planting device to be stored, a simple configuration is not required, as it does not require a dedicated configuration for reducing the front-rear length. In the second aspect of the present invention, the posture of the seedling planting device can be changed at an arbitrary timing, so that an increase in load on the drive source can be suppressed as compared with a case where the posture of the seedling planting device is changed at the same time. Play.

Further, according to the present invention, the center of gravity is displaced toward the traveling machine body due to lifting of the rear end side of the seedling planting apparatus in the retracted posture, which makes it possible to stabilize the machine body during traveling.
By raising the rear end side of the seedling planting device in the retracted posture, the rear end side of the seedling planting device is less likely to contact the ground even if the front end side of the traveling machine body is tilted to the lifting posture during traveling.

[0011]

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 the front part of the traveling machine body 3 is mounted. A continuously variable transmission 5 to which power from the engine 4 is transmitted, and a transmission case 6 are arranged, a driving seat 7 is arranged at the center of the traveling body 3, and a hydraulic pressure is applied to the rear end of the traveling body 3. The seedling planting device A is connected through a link mechanism 9 that is driven and moved up and down by a cylinder 8 to form a riding type rice transplanter.

The right side of the driver's seat 7 is provided with an elevating lever 10 for controlling the raising and lowering of the seedling planting device A and the on / off operation of the planting clutch C, and the left side of the driver's seat 7 is the continuously variable transmission. A gear shift lever 11 for operating the device 5 is provided.
The planting clutch C is built in the speed change case 6, and the disengagement operation is allowed only when the transmission shaft 12 that transmits power from the speed change case 6 to the seedling planting device A is in a predetermined rotation phase. Then, a planting arm (described later) of the seedling planting apparatus A is configured to stop in a posture avoiding 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 that the planting arm 17 cuts out the seedlings from the lower end of each plant and plant them in the field scene, the fertilizer application device 19 supplies the fertilizer to the field scene near the planted seedling. The rotary case 1
6, a planting arm 17, and a system for driving these, constitute a planting mechanism.

As shown in FIG. 2, FIG. 3 and FIG. 6, this rice transplanter is configured so that it can be divided into two 4 sections at the center 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. 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 the upper part and a lower link 9L arranged at the lower part, and is connected to the rolling boss 22 connected to the lower end of the vertical frame 9A supporting the rear end of each. 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
L and 13R are connected by a connecting member D (see FIGS. 8 and 9), so that the power from the lateral feed mechanism integrally reciprocates on the slide rails 28 in the lateral direction.

A shaft body (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 core Y, as shown in FIG.
As shown in (a) and (b), the power of this shaft body is provided in the bevel case 32, and the pair of output shafts 3 provided in the bevel case 32.
A transmission system is formed to transmit to the left and right transmission cases 14 and 14 via 3, 33, the clutch mechanism 34, and the intermediate shaft 35, respectively. The clutch mechanism 34 includes a clutch shaft portion 34A formed in a spline shape at the end of the intermediate shaft 35, and a shift member 34B externally fitted to the output shaft 33 so as to be engageable with and disengageable from the clutch shaft portion 34A. This shift member 34
And a spring 34C for urging B toward the clutch shaft portion 34A.

When the clutch mechanism 34 is engaged, the clutch shaft portion 34A and the shift member 34B are engaged with each other only at a specific rotational phase. As shown in FIG. 4B, the clutch shaft portion 34A and the shift member are engaged during the disengagement operation. By separating from 34B,
The intermediate shaft 35 and the output shaft 33 of the bevel case 32 are configured to be completely separated. The bevel case 32 is internally equipped with a transmission system having a bevel gear (not shown) for branching and outputting the power from the traveling machine side to the two output shafts 33, 33, and the intermediate shaft 35 of the frame member 20. It is supported so as to maintain a lateral position with respect to the system, and is configured with a universal joint.

As shown in FIGS. 5 (a), 5 (b) 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, and
The frame members 20 and 20 are connected and fixed via the rods 40 and 40 in a suspended posture so as to rotate in association with the rotational force of the frame members 20, and the left and right rotating members 37 and 37 are rotated in opposite directions. , A pair of wires 4 in a crossed position between each
4,44 are stretched. Further, the sector gear 41 arranged coaxially with the left second axial center X2 is fixed to the frame member 20 side, and the pinion gear 42 that meshes with the sector gear 41 is provided on the main frame 21 side. The electric motor 43 which drives is provided.

The rod 40 has a turnbuckle 40A in the middle thereof, and one end thereof has a rotating member 37.
Is fixed by welding to the frame member 20, and the other end of the rod member 40 is screwed to the frame member 20 through a supporting member 45 fixed to the frame member 20. By tying the frame member 20 in an inclined posture between the two, the strength is improved by suspending the frame member 20 from the rotating member 37. Further, a length adjusting portion 44A for adjusting the length in a screw type is provided at an intermediate portion of the wire 44.

With such a construction, when the seedling planting apparatus A is stored, the seedling planting apparatus A is raised to a level away from the ground and, 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. 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, by artificially separating the clutch mechanism 33 and driving the electric motor 43 by a predetermined operation,
The respective frame members 20, 20 are interlocked by the force from the left and right rotating members 37, 37 and the pair of wires 44, 44 so that the outer end side is directed to the rear side around the second axis X2, X2. While rotating, simultaneously with this rotation, the first axis X
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 can be performed while avoiding contact between the respective corner portions 13E and 13E, and the separation of the clutch mechanism 33 and the expansion and contraction of the intermediate shaft 35 can be performed. This rotation is allowed.

Then, when the divided objects AL and AR reach the storage attitude, the driving of the electric motor 43 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 bases 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. 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 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.

When the seedling planting apparatus A in the stored posture is restored to the working posture, the electric motor 43 is rotated in the reverse direction so that the divided products AL and AR are rotated in the opposite directions to the above. 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
3 is stopped (control operation is not described in detail), the clutch mechanism 33 is connected, the right divided seedling placing table 13R is moved to the left divided seedling placing table 13L side, 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
For example, the posture of the second axis can be configured to be freely changeable, the storage operation of the seedling planting device can be performed manually, and the seedling planting of 10 rows or more can be performed. It can also be applied to an attached device.

Further, according to the present invention, as shown in FIG. 14, crank members 52 are fixed to both left and right ends of a support shaft 51 which is rotatably provided in a horizontal posture with respect to a frame 50 at the rear end of the traveling machine body 3. The crank member 52 is provided with a hydraulic cylinder 53 at one end, and the other end is connected with the hydraulic cylinder 53 between the lower link 9L of the link mechanism 9 and the frame at the rear end of the traveling machine body. When the conversion mechanism G is configured and the seedling planting apparatus A is stored by the same operation as that of the above-described embodiment, the hydraulic cylinder 53 is operated to displace the entire pair of lower links 9L rearward so that the seedling planting apparatus is operated. It is also possible to configure so that the rear end side of A (the rear side of the traveling machine body) can be displaced upward (numbers and symbols common to those of the embodiments are attached to those having the same functions as those of the above embodiments).

Further, in the present invention, the link mechanism 9 and the seedling planting apparatus A are connected so as to be swingable about the axis of the horizontal posture,
The posture changing mechanism can be configured by including an actuator such as a hydraulic cylinder so as to change the posture of the seedling planting device A around this axis, and the posture changing mechanism is a quadrangular link of unequal sides. It is also possible to form a combination of a mechanism and an actuator.

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

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

FIG. 4 (a) is a rear view of the clutch mechanism in an engaged state, and (b) is a rear view of the clutch mechanism in a disengaged state.

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

[Fig. 9] Plan view of the rice transplanter with the seedling mount divided.

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.

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

FIG. 14 is a side view of the seedling planting device according to another embodiment in a stored state.

[Explanation of symbols]

 3 Traveling aircraft 13 Seedling placement platform 13L, 13R Split seedling placement platform 20 Frame member A Seedling planting device AL, AR Divided product G Posture conversion mechanism X1 1st axis core X2 2nd axis core W Seedling

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhide Minamikawa 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory (72) Inventor Takeo Kuboshita 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. (72) Inventor Hiroaki Kitai 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. (72) Inventor, Shoichi Murata 64 Ishizukita-machi, Sakai City, Osaka Kubota Sakai Factory Co., Ltd.

Claims (2)

[Claims] 1. A seedling (W) placed on a seedling stand (13)
A seedling planting device (A), which is cut out by a planting mechanism and is operated to plant in a field, is vertically connected to the rear end of the traveling machine body (3). A) is configured to be freely divided at an intermediate position in the left-right direction, and each of the divided products (AL) and (AR) is vertically oriented with respect to the frame members (20) and (20).
The frame members (20) and (20) are rotatably supported around the shaft cores (X1) and (X1), and the frame members (20) and (20) are rotatably supported around the vertically oriented second shaft cores (X2) and (X2). By supporting the member on the machine body side, the lateral outer ends of the divided products (AL) and (AR) are rotated by the rotation around the first axis (X1) and (X1), so that the traveling machine body (3) is supported. The second axis (X
2), frame members (20), (2 around (X2)
By turning the (0), 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 upper edges of the respective divided seedling placing bases (13L) and (13R). Are configured to be able to switch to a parallel storage posture in a close state, and the postures of the second shaft cores (X2) and (X2) are set to an inclined posture in which the upper end of the second shaft core (X2) faces the front side of the traveling machine body (3). A rice transplanter. 2. A seedling (W) placed on a seedling placing table (13)
A seedling planting device (A), which is cut out by a planting mechanism and is operated to plant in a field, is vertically connected to the rear end of the traveling machine body (3). A) is configured to be splittable at an intermediate position in the left-right direction, and the splits (AL), (AR) are rotated about the longitudinal axis to divide the splits (AL),
The lateral outer end of (AR) is directed to the front side of the traveling machine body (3), and the frame members (20) and (20) are rotated around the second axes (X2) and (X2). Split (AL),
(AR) is moved to the central position side in the left-right direction of the traveling machine body (3), and the divided seedling placing stands (13L) and (13R) are respectively moved.
The upper end edges of the seedlings can be switched to a retracted posture in which the upper end edges are parallel to each other, and the system for supporting the seedling planting device (A) on the traveling machine body is operated by the operation of the seedling planting device (3). A rice transplanter equipped with a posture conversion mechanism (G) for displacing the rear side of the body (3) upward.