JPH08228541A - Rice transplantr - Google Patents

Abstract

PURPOSE: To provide a rice transplanter restrained from shakiness and enabling its posture to be smoothly changeable, equipped with a fixing mechanism to immobilize divided seedling tables along sliding rails in such a manner that the left and right divided seedling tables are allowed to stand apart from each other. CONSTITUTION: Divided seedling table parts 13L, 13R are designed to make reciprocating motions along sliding rails 28L, 28R provided with a seedling extraction port 28A, a traverse feed mechanism B is provided for driving such reciprocating motions, and left and right divided seedling planting device parts AL, AR are so designed as to be switchable between such operating posture that the parts 13L, 13R stand along the lateral direction of the machine body and such housing posture that they stand along the longitudinal direction of the machine body. Besides, a fixing mechanism is equipped to immobilize the parts 13L, 13R along the sliding rails 28L, 28R in such a state that the left and right parts 13L, 13R are allowed to stand apart from each other in the former posture thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a left and right split seedling planting device comprising at least a split seedling placing base portion and a seedling planting mechanism for taking out seedlings from the split seedling placing base portion. The divided seedling placing base portion is configured to reciprocate with respect to the sliding rail portion on which the seedling take-out port is formed, and the divided seedling placing base portion with respect to the sliding rail portion. A lateral feed mechanism for reciprocating drive is provided, and the left and right split seedling planting device parts are arranged in a working posture in which the split seedling placement base portion is in the lateral direction of the machine body, and the storage posture in which the split seedling placement base portion is in the longitudinal direction of the body The present invention relates to a rice transplanter configured to be switchable to and.

[0002]

2. Description of the Related Art In the above rice transplanter, when the divided seedling placing table is set in the retracted posture along the longitudinal direction of the machine, it has an advantageous structure that the width of the entire machine can be made smaller than that in the working posture. . In the rice transplanter having such a configuration, when switching from the work posture to the retracted posture and from the retracted posture to the work posture, the divided seedling placing base is changed from the posture along the lateral direction of the fuselage to the posture along the longitudinal direction of the fuselage. You will have to change your posture.

[0003]

By the way, since the divided seedling placing base is configured to be movable with respect to the sliding rail portion by the transverse feed mechanism, the seedling placing base is divided into the divided seedling placing bases. A mechanism that does not unexpectedly move when the posture is changed to the storage posture is desired.

An object of the present invention is to prevent accidental movement when changing the posture of the divided seedling placing table portion so that the posture can be smoothly changed.

[0005]

According to a characteristic configuration of the present invention, the divided seedling placing base portions are separated from each other in a state in which the divided seedling placing base portions are separated from each other in a posture along the lateral direction of the machine body. There is a fixing mechanism that makes the unit immovable, and its operation and effect are as follows.

[0006]

[Operation] In other words, by operating the fixing mechanism,
When switching from the work posture to the storage posture, the movement of the divided seedling placing base is blocked, and the vibration of the entire rice transplanter due to the movement of the divided seedling placing base seen when the fixing mechanism is not applied and It can prevent rattling and make a smooth posture change. In order to operate the fixing mechanism, the divided seedling placing bases must be separated from each other, so that it is possible to avoid interference between adjacent portions of the divided seedling placing bases when changing the posture. Moreover, since the split seedling placing bases cannot be fixed by the fixing mechanism unless the split seedling placing bases are separated from each other in a posture along the lateral direction of the body, the split seedling placing bases can be fixed. In the work posture in which the slide rail unit must be moved by the transverse feed mechanism, the fixing mechanism is less likely to act.

[0007]

Therefore, the posture of the divided seedling planting device can be smoothly changed, and the fixing mechanism can be properly operated.

[0008]

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 continuously variable transmission (HST) 5 to which power from the engine 4 is transmitted, and a transmission case 6 are arranged, and a driver's seat 7 is arranged at the center of the traveling body 3.
The seedling planting apparatus A is connected to the rear end of the traveling machine body 3 via a link mechanism 9 that is driven up and down by a hydraulic 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 engage and disengage the planting clutch, and the left side of the driver's seat 7 operates the continuously variable transmission 5. The gear shift lever 11 is provided.

The seedling planting apparatus A mounts a mat-like seedling W, and the upper end side of the seedling placing table 13 is inclined to the front side of the traveling machine body 3, and power is transmitted from the transmission case 12 from the transmission case 12. A pair of left and right transmission cases 14, 14, a rotary case 16 rotated by the power transmitted from the transmission case 14 via a chain case 15, a pair of planting arms 17 provided in the rotary case 16 one by one, A mat-like seedling W that is equipped with each of the ground leveling floats 18 and configured for eight-row planting, and is equipped with a fertilizer application device 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 16, the planting arm 17, and a system for driving them constitute a seedling planting mechanism.

As shown in FIGS. 2 and 3, in this rice transplanter, two rows of four rows are arranged at the center position of the seedling planting apparatus A in the left-right direction.
It is configured to be split freely, and each split seedling planting device section A
The first axis X1 of L and AR in a vertical posture with respect to the frame member 20 that constitutes the divided seedling planting device sections AL and AR.
The frame member 20 is rotatably supported around the main frame 21 provided at the rear end of the link mechanism 9, and the frame member 20 is rotatably supported around the second axis X2 in the vertical posture. Further, as shown in FIG. 8, in the state where the seedling planting device 9 is set in the working posture, the upper end side of each of the first axis X1 and the second axis X2 with respect to the vertical direction is the traveling machine body. 3 is inclined in the direction toward the front side.

As shown in FIGS. 2, 3 and 7, 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 a vertical frame for supporting the rear end of each of them. A rolling boss 22 coupled to the lower end of 9A supports a coupling plate 23 so that it can roll freely around a rolling axis Y in a front-back direction, and the upper plate 21A and the lower pipe 2 are supported by the coupling plate 23.
1B and the main frame 21 is fixedly mounted, and the boss member 20A is rotatably fitted to the second shaft 24 arranged coaxially with the second shaft X2 at the left and right ends of the main frame 21. On the other hand, the round pipe-shaped frame member 20 is fixedly mounted to rotatably support the frame member 20 around the second axis X2, and the frame members 20 are provided at the outer end portions of the respective frame members 20, 20. The first shaft 25 arranged coaxially with the first shaft core X1
A square pipe-shaped support frame 27 is rotatably supported about the first axis X1 via a channel-shaped bracket 26, and the left and right transmission cases 14 are supported with respect to the support frame 27, and The chain case 15 is fixed, and the seedling placing table 1 is attached to the upper surfaces of the pair of chain cases 15 and 15 of the divided seedling planting device units AL and AR, respectively.
Left and right sliding rail portions 28L and 28R for supporting the 3 are provided.

As shown in FIG. 2, the left transmission case 14
The screw shaft 29, which is rotationally driven by the power of
And a bearing member 30 at the end of the support frame 27 on this side, and the moving force of a top (not shown) engaged in the spiral groove of the screw shaft 29 is applied to the left split seedling. The moving member 31 for transmitting to the placing table portion 13L is provided to configure a lateral feeding mechanism for the seedling placing table 13. In the seedling placing table 13, the left and right divided seedling placing table portions 13L and 13R are connected by a connecting member D (see FIGS. 9 and 10), so that the sliding rail portion is driven by the power from the transverse feed mechanism. 28L and 28R are integrally reciprocated laterally.

A mechanism C for fixing the right divided seedling placing base portion 13R to the sliding rail portion 28R will be described. On the other hand, the fixing mechanism C is also used for the left side seedling placing base 13L.
Although it is also possible to adopt, it is not particularly necessary to fix it to the sliding rail portion 28L, because the left divided seedling placing base portion 13L is connected to the lateral feed mechanism B.
As shown in FIGS. 4A and 4B, the divided seedling placing base portion 13
A pair of upper and lower brackets 46A and 46B are provided on the left and right side ends of R.
Is fixed, and a rod-shaped lock lever 47 is provided across the brackets 46A and 46B. The lock lever 47 is provided with a receiving portion 47A for the spring 48 to urge the lock lever 47 to project, and to form an insertion hole 47B for a β pin 49 for adjusting the projecting amount of the lock lever 47 in two steps. is there. On the other hand, a bracket 28B that allows the lock lever 47 to be inserted and engaged is provided on the sliding rail portions 28L and 28R. With such a configuration, as shown in FIG.
L and 13R are separated from each other and sliding rail portions 28L and 2
By engaging the lock lever 47 with the bracket 28B of the sliding rail portion 28R in a state of being brought close to the left and right ends of the 8R, the divided seedling placing base portion 13R can be configured to be immovable with respect to the sliding rail portion 28R. Also, as shown in FIG.
When the left and right divided seedling placing portions 13L and 13R are integrally connected and reciprocally moved by the lateral feed mechanism B in the work posture, the β pin 49 is replaced and the lock lever 47 is separated from the bracket 28B of the sliding rail portion 28R. By doing so, it is possible to switch to the state of releasing the fixed connection state with the divided seedling placing base portion 13R.

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 is bevel case 32, and a pair of output shafts 3 provided in 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. 5B, 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. 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
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 connecting the two members, the frame member 20 is suspended from the rotating member 37 to improve the strength. 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 base 13 is sent to the left end position and stopped, and then, as shown in FIG. 10, the connection of the connecting member D is released to artificially set the right divided seedling placing base 13R. The fixing mechanism C prevents movement of the divided seedling placing base portion 13R on the slide rail 28 by moving to the right moving end (in this state, the distance between the left and right divided seedling placing base portions 13R and 13L is about Reach 30 centimeters).

Next, by artificially separating the clutch mechanism 33 and driving the electric motor 43 by a predetermined operation,
As shown in FIGS. 6 and 11, the sector gear 41 is rotated, and the left frame member 20 is rotated by the rotation of the sector gear 41. The rotation of the left frame member 20 rotates the left rotation member 37 connected by the rod 40, and the rotation of the left rotation member 37 is transmitted to the right rotation member 37 via the wire 44 to rotate the right rotation member 37. The moving member 37 rotates, and this rotation causes the right frame member 20 to reverse. That is, the left and right rotating members 37, 37, the pair of wires 44, 4
The respective frame members 20, 20 are interlocked by the force from 4 to rotate around the second shaft cores X2, X2 so that their outer ends move to the rear side, and at the same time as this rotation, the first shaft cores. The system supported by the brackets 26, 26 around X1, 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.

As shown in FIG. 12, the corners 13E, 13E at the upper inner ends of the left and right split seedling placement table portions 13L, 13R approach each other when rotating to the storage posture, but the split seedling placement is performed in plan view. Since the base portions 13L and 13R rotate at positions separated from each other, the rotation is possible while avoiding contact between the corner portions 13E and 13E. Also, the clutch mechanism 33 is separated and the intermediate shaft 35 is expanded and contracted. This rotation is allowed with and. Then, when the divided seedling planting device units AL and AR reach the storage posture, the driving of the electric motor 43 is stopped (the control operation is not described in detail) and the storage is completed.

When the seedling planting device A in this storage posture is restored to the working posture, the electric motor 43 is rotated in the reverse direction so that the divided seedling planting device portions AL and AR rotate in the opposite direction to the above. The seedling planting device A in the retracted position by the operation opposite to the above.
Is changed to the work posture, and when the posture changing causes the seedling planting apparatus A to reach the posture shown in FIG. 12, the drive of the electric motor 43 is stopped (the control operation is not described in detail), and the clutch mechanism 33 is operated. And the right divided seedling placing base portion 13R is brought close to the left divided seedling placing base portion 13L side, respectively 13L, 13
By connecting R with the connecting member D, a workable state is reached.

Next, the structure for controlling the amount of seedlings will be described. As shown in FIGS. 14 and 15, a seedling picking adjustment lever 50 for adjusting the seedling picking amount is provided so as to be swingable around the axis Z, and the lever 50 is fixed at an adjusting position by a lever guide 51. ing. As shown in FIG. 14, the support shaft 52 of the lever 50 is installed laterally, and is connected so that the split seedling planting device portions AL and AR can be separated from each other when switching between the working posture and the storage posture at the intermediate portion. It is configured to be separable by the mechanism 53. The support shaft 52 is provided with drive arms 54 at four positions in the axial direction. The drive arms 54 are attached to the sliding rail portions 28L and 28R.
By engaging with the engaging metal fitting 28C, the whole seedling stand 13 is vertically adjusted to reduce the amount of seedlings taken by the seedling planting mechanism. The drive arms 54 have different arm lengths, and the arm length becomes longer as the distance from the lever 50 increases. As a result, the insufficient swing amount due to the twist of the support 52 is compensated by increasing the arm length.

[Other Embodiments] In addition to the above-described embodiment, the present invention is not limited to the fixing mechanism C.
A general bolting structure etc. can be applied. As the installation position of the fixing mechanism C, the divided seedling placing base 1
The position is not limited to the end of 3R and may be an intermediate position. In addition, the divided seedling placing table portion 13R is attached to the sliding rail portion 2
As a configuration for immobilizing with respect to 8R, not only the sliding rail portion 28R for fixing the divided seedling placing base portion 13R but also the rear side of the seedling placing base 13 from the fixed side such as the transmission case 14 or the chain case 15 is fixed. A configuration may be adopted in which the frame is extended toward and attached to this frame.

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 is a plan view of the transmission system of the seedling planting device.

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

FIG. 4 (a) Rear view showing the fixing state of the fixing mechanism (b) Rear view showing the fixing mechanism before fixing

[Fig. 5] (a) Rear view showing the connected state of the clutch (b) Rear view showing the released state of the clutch

FIG. 6A is a plan view of the operation system using the rope, and FIG. 6B is a plan view of the operation system using the rope 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 showing a state in which both split seedling placing bases are moved to one side.

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

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

FIG. 12 is a plan view of the rice transplanter in a state where the turning of the divided seedling planting device portion of the seedling planting device is completed.

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

FIG. 14 is a plan view showing a structure for adjusting a seedling-picking amount.

FIG. 15 is a side view showing a structure for adjusting a seedling taking amount.

[Explanation of symbols]

 13L, 13R Split seedling placing base 28L, 28R Sliding rail 28A Seedling take-out port A Seedling planting device AL, AR Split seedling planting device unit B Traverse mechanism C Fixing mechanism

Claims (1)

[Claims] 1. A seedling planting device (A) comprising a seedling planting unit (13L), (13R) and a seedling planting mechanism for taking out seedlings from the split seedling platform (13L), (13R). Left and right split seedling planting device section (AL), (AR)
And the divided seedling placing base portion (13 L),
(13R) is configured to reciprocate with respect to the sliding rail portions (28L) and (28R) in which the seedling take-out port (28A) is formed, and the divided seedling placing base portions (13L) and (13L).
R) is provided with a transverse feed mechanism (B) for reciprocally driving the sliding rail portions (28L) and (28R), and the left and right divided seedling planting device portions (AL) and (AR) are divided into the divided portions. The seedling placing bases (13L) and (13R) are configured to be switchable between a working posture along the lateral direction of the machine body and the divided seedling placing bases (13L) and (13R) along a storage posture along the longitudinal direction of the machine body. A certain rice transplanter, wherein the left and right split seedling placement base portions (13L) and (13R) are separated from each other in a posture along the lateral direction of the machine body in a posture along the horizontal direction of the fuselage body. A rice transplanter provided with a fixing mechanism (C) for immobilizing the sliding rails (28L) and (28R) in an immovable state.