JPH08130933A - Rice transplanter - Google Patents

Abstract

PURPOSE: To enable change of a seedling transplanting device to a housing position by simply carrying out lock release of the seedling transplanting device and division of a transmission system. CONSTITUTION: This rice transplanter is equipped with a housing means which can transport the outer end parts in the lateral direction of divided materials of a seedling transplanting device A toward the front side of a traveling machine body, move the divided materials to the central position side in the right and left direction of the traveling machine body and change upper ends of divided seedling transplanting placing bases 13R and 13L into parallel housing positions in a mutually close state. The rice transplanter is provided with a lock mechanism R for keeping the seedling transplanting device in an operation position, a clutch mechanism 34 fixed to a transmission shaft of the seedling transplanting device and a handling tool 54 for simultaneously carrying out the release operation of the lock mechanism R and the separating operation of a clutch mechanism.

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.

Therefore, the whole seedling planting device is divided into left and right parts, and the lateral direction of the seedling planting device is changed to a frontward and rearward posture by pivoting about a suitable vertical axis. Therefore, it is conceivable to reduce the lateral dimension of the seedling planting device at the time of storage.However, in the case where the seedling planting device is configured to be split in this way, the splitting action is performed by the action of external force during work. It is necessary to securely hold the posture by providing a lock mechanism etc. so that the operation is not performed.Also, in order to enable the split operation, the transmission shaft that drives the seedling planting device has a clutch mechanism etc. If the seedling planting device is equipped with such a mechanism, it is necessary to operate each mechanism separately when switching the seedling planting device to the retracted position, and there is room for improvement.

An object of the present invention is to rationally construct a rice transplanter that can switch the seedling planting device to a storage posture in which the lateral dimension is reduced without any trouble.

[0006]

The features of the present invention are, as described at the beginning, that the seedling planting device for cutting out the seedlings on the seedling platform by the planting mechanism and planting them in the field can be moved up and down to the rear end of the traveling machine body. In the rice transplanter that is connected to, the seedling planting device is configured to be split at an intermediate position in the left-right direction, and the lateral outer end of the split product is forward of the traveling machine body by changing the attitude of each split product. And move this split to the center position side in the left-right direction of the traveling machine body to enable switching to a storage posture in which the upper edge of each split seedling stand is parallel in close proximity. A locking mechanism provided with a storing means, and a releasing mechanism for allowing the seedling planting device to switch from the working posture to the storing posture, and the cutting operation for separating the transmission shaft of the seedling planting device to separate the seedling planting device. Clutch mechanism that allows switching of the device to the retracted position Equipped with a lock mechanism release operation,
It is provided with an operating tool for simultaneously performing the clutch mechanism disengagement operation, and its operation and effect are as follows.

[0007]

According to the above feature, when the seedling planting device is stored, the transmission shaft is separated and the lock mechanism is unlocked while the clutch mechanism is disengaged by operating the operation tool. After this operation, the storage means directs the lateral outer end of the divided part of the seedling planting device to the front side of the traveling machine body, and moves this divided body to the center position side in the lateral direction of the traveling machine body. Then, by switching to the storage posture in which the upper edges of the respective divided seedling placing bases are parallel to each other in the close state, it is possible to switch to the storage posture in which the lateral dimension of the seedling planting apparatus is reduced.

That is, the seedling planting device can be maintained in the work posture by the lock mechanism, and the lock mechanism is unlocked and the transmission system clutch mechanism is separated by operating the single operation tool when switching to the storage posture. Since the operation and the operation are performed at the same time, it is possible to switch to the storage posture without being obstructed by the lock mechanism and the transmission system.

[0009]

As described above, the rice transplanter can be reasonably constructed so that the seedling planting device can be switched to the storage posture in which the lateral dimension of the device is reduced without any trouble.

[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 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.

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 the planting clutch C. Further, the left side of the driver's seat 7 has 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 apparatus A has a mat-shaped seedling W placed thereon, and the upper end side of which is inclined to the front side of the traveling body 3, and a 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. 6, FIG. 7 and FIG. 9, this rice transplanter is constructed 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. The first axis X1 is rotatably supported around the second axis X2, and as shown in FIG. 10, with the seedling planting apparatus A set in the working posture, the first axis X1 is based on the vertical direction. The upper ends of the second axis X2 are inclined toward the front side of the traveling machine body 3.

A connecting plate 2 is freely rotatable around a rolling axis Y in a front-back direction with respect to a rolling boss 22 connected to the lower end of the vertical frame 9A of the link mechanism 9.
The main frame 2 supporting the connection plate 23 and including the upper plate 21A and the lower pipe 21B with respect to the connecting plate 23.
1 is fixed to the main frame 21, and the main frame 21 has a round pipe shape with respect to the boss member 20A that is rotatably fitted to the second shaft 24 disposed coaxially with the second shaft X2 at both left and right ends. The frame member 20 is fixedly mounted to support the frame member 20 rotatably around the second axis X2, and the outer ends of the frame members 20 and 20 are coaxial with the first axis X1. A square pipe-shaped support frame 27 is rotatably supported around the first shaft core X1 via a channel-shaped bracket 26 with respect to the first shaft 25 arranged at the core, and the support frame 27 is provided with the above-mentioned structure. The left and right transmission cases 14 and the chain case 15 are fixedly mounted, and further, the left and right slides which support the seedling placing table 13 with respect to the upper surfaces of the pair of chain cases 15 and 15 of the divided products AL and AR, respectively. Rail 28, 28
Is 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 connecting members D (see FIGS. 11 and 12)
By being connected by means of, the power from the lateral feed mechanism causes the sliding rails 28, 28 to integrally reciprocate laterally in the lateral direction.

A shaft body (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, 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. Further, the clutch mechanism 34 is slidably fitted on the output shaft 33 so that the clutch shaft 34A is formed in a spline shape on the side of the intermediate shaft 35 and is slidably fitted on the clutch shaft 34A. The shift member 34B and the clutch shaft portion 34A
With the spring 34C that urges to the side of the bevel case 3 during engagement operation, the bevel case 3 engages only at a specific rotation phase.
The two output shafts 33, 33 are configured to be completely separated. The bevel case 32 is internally equipped with a transmission system having a bevel gear (not shown) so as to branch and output power from the traveling machine body to the two output shafts 33, 33. It is configured with a joint.

As shown in FIGS. 8A, 8B, and 9,
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.

A turnbuckle 40A is interposed in the middle of the rod 40, and one end of the rod 40 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. In addition, a length adjusting portion 44A for adjusting the length in a screw type is provided at an intermediate portion of the wire 44.

As shown in FIGS. 2 and 5 (a), (b), and (c), the pipe member 46 is welded and fixed to the front surfaces of the left and right support frames 27, 27 so as to project forward. A rod-shaped U-shaped engaging member 47 is provided at the outer end position of the lower pipe 21B of the main frame 21 so as to engage with the front end of the engaging member 47. The lock piece 48 is provided so as to swing freely with the
The rocking preventive piece 49 for holding 8 in the locked posture is swingable around the axis of the lateral posture, and the lock mechanism R is provided with a spring-biased state in the engaging direction.

As shown in FIG. 5B, the lock mechanism R holds the tip end of the engaging member 47 in the lock posture in which it engages with the recess 48A of the lock piece 48, whereby the posture of the support frame 27 relative to the main frame 21. Is maintained in the work posture, and the engaging member 47 and the lock piece 48 are separated from each other, whereby the support frame 27 rotates about the first axis X1, and
The frame member 20 is allowed to rotate around the second axis X2. A guide member 50 having a guide portion 50A for guiding the engaging member 47 to the recess 48A of the lock piece 48 from the unlocked posture is provided on the main frame 21 side.

As shown in FIGS. 3 (a), 3 (b) and 4, the pair of support plates 5 fixed to the pipe member 46 is provided.
The intermediate shaft 35 is maintained in a horizontal posture by idly supporting the intermediate shaft 35 with respect to 1, 51, and the shift member 34B is fitted onto the pair of output shafts 33, 33 of the bevel case 32. , 34B for operating the clutches 34, 34B in the clutch disengaging direction and a bracket 53 for swingably supporting the shifters 52, 52 are provided on the main frame 21 side.

As shown in FIG. 2, in this rice transplanter, when the seedling planting apparatus A is switched to the retracted posture, the main operation lever 54 is an operation tool for simultaneously performing the lock mechanism R and the clutch mechanism 34 disengagement operation. The operation lever 54 is arranged above the frame 21, and the operation lever 54 and the rocking prevention piece 49 of the lock mechanism R are connected by an operation rod 55, and the operation lever 54 and the shifter 52 are linked by a wire 56. I am doing it. Then, by operating the operating lever 54 from the “ON” position to the “OFF” position, the lock piece 48 is switched by changing the posture of the rocking prevention piece 49 as shown in FIG. 5C.
Allowing to switch to the unlocked posture of
The shift member 34B is separated from the clutch member 34A by the operation of the shifter 52, and the refraction of this transmission system is allowed.

As described above, in the rice transplanter, the storage means is constituted by a system for switching the divided object to the storage posture by rotating about the first axis X1 and the second axis X2. When the seedling planting apparatus A is stored, the seedling planting apparatus A is raised to the level of being separated from the ground, as shown in FIG.
As shown in FIG. 1, first, the seedling placing table 13 is sent to the left end position by the driving force of the lateral feed mechanism 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, and the movement of the split seedling placing table 13R on the slide rail 28 is blocked by a fixing means (not shown) (in this state, the posture shown in FIG. 12 is reached, and the left and right split seedlings are reached. The distance between the mounts 13R and 13L reaches about 30 cm).

Next, the left and right lock mechanisms R are unlocked by operating the operation lever 54, and the electric motor 43 is driven by a predetermined operation with the transmission system separated at the clutch mechanism 34, Left and right rotating members 37,
37, the respective frame members 20, 20 are interlocked by the force from the pair of wires 44, 44, and the second axial cores X2, X2
At the same time, the outer end side of the main sprocket 36 is rotated toward the rear side, and at the same time as this rotation, the system supported by the brackets 26, 26 around the first axis X1, X1 is the main sprocket 36,
Due to the force from the driven sprocket 38 and the chain 39, the rotation speed of the frame members 20, 20 is twice as fast as the rotation direction of the frame members 20, 20. Rotate forward.

When turning to this storage posture, as shown in FIG. 13, 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, but 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 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. 14, the left and right split seedling placing bases 13L and 13R are positioned on the slide rails 28 and 28 close to the side of the traveling machine body 3, and their upper 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 transplanter, and
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. 15 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 displacing the rear side of the traveling body 3 of the above upward, the center of gravity of the entire rice transplanter is moved further forward to improve the weight balance, and at the same time, the rear end of the seedling planting device A in the retracted posture during traveling is set on the ground. It should not come into contact.

When the seedling planting apparatus A in the storage 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 working posture, and when the seedling planting apparatus A reaches the posture shown in FIG. 12 by this posture change, the drive of the electric motor 43 is stopped (control operation is not described in detail). When this posture is reached, as shown in FIG. 5A, the guide member 50 guides the engaging member 47 into the recess 48A of the lock piece 48, and the force of this posture change causes the lock piece 48 to move.
Will naturally reach the locked posture, and by operating the operating lever 54 to the “ON” position in this state, the rocking prevention piece 49 keeps the locked state by the blocking action, and by the urging force of the spring 34C. Shift member 34
B and the clutch member 34A reach the connected state (engaged state), and further, the right divided seedling placing table 13R is moved closer to the left divided seedling placing table 13L side and 13L and 13R are connected by the connecting member D, respectively. Reach a state where you can work with.

[Other Embodiments] In addition to the above embodiments, the present invention is
For example, it is possible to configure the lock mechanism with a member on the main frame side, an engagement pin that is inserted into each of the holes on the frame member side, and the like. It is also possible to provide it at a location, and it is also possible to apply it to 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 structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

FIG. 2 is a side view showing the arrangement of operating tools.

FIG. 3A is a rear view showing an operation system of the clutch mechanism, and FIG. 3B is a rear view showing the clutch mechanism in a disengaged state.

FIG. 4 is a cross-sectional plan view of the operating system of the clutch mechanism.

5A is a side view of the lock mechanism in an unlocked state, FIG. 5B is a side view of the lock mechanism in a locked state, and FIG. 5C is a side view of the lock mechanism immediately after unlocking.

FIG. 6 is a plan view of the transmission system of the seedling planting device in a working position.

FIG. 7 is a plan view of the transmission system of the seedling planting device in the retracted posture.

FIG. 8A is a plan view of the storage means in a working posture, and FIG. 8B is a plan view of the storage means in a storage posture.

FIG. 9 is a rear view of the main frame portion.

FIG. 10 is a side view showing the postures of the first axis and the second axis.

FIG. 11 is a plan view of the rice transplanter with the seedling stand placed at the end of the sliding rail.

FIG. 12 is a plan view of the rice transplanter with the seedling placing table being divided.

FIG. 13 is a plan view of a rice transplanter in which the seedling planting device is divided and rotated.

FIG. 14 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 15 is a rear view of the seedling planting device in a stored state

FIG. 16 is a side view of the seedling planting device in a stored state.

[Explanation of symbols]

 3 Traveling aircraft 13 Seedling placement platform 13L, 13R Split seedling placement platform 34 Clutch mechanism 54 Operation tool A Seedling planting device AL, AR Split plantlet planting device R Lock mechanism W Seedling

Claims (1)

[Claims] 1. A seedling (W) placed on a seedling stand (13)
A seedling planting device (A) that 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 the lateral outer ends of the divided objects (AL) and (AR) are changed by changing the postures of the respective divided objects (AL) and (AR). (3) is directed to the front side, and the divided objects (AL) and (AR) are moved to the central position side of the traveling machine body (3) in the left-right direction, so that the divided seedling placing bases (1)
3L) and (13R) are provided with a storage means that enables switching to a storage posture in which the upper edges of the 3L) and (13R) are parallel to each other in a close state,
A lock mechanism (R) that allows the seedling planting device (A) to be switched from the work posture to the storage posture by the release operation, and the transmission shaft of the seedling planting device (A) is separated by the cutting operation to separate the seedling planting device (A). An operating tool (54) that includes a clutch mechanism (34) that allows the planting device (A) to be switched to a storage posture and that simultaneously performs a release operation of the lock mechanism (R) and a disengagement operation of the clutch mechanism (34). Rice transplanter equipped.