JPH08228538A - Rice transplanter - Google Patents

Abstract

PURPOSE: To provide a rice transplanter for facilitating operation by human work when dividing and housing a seedling planting device. CONSTITUTION: The outside end parts in the lateral direction of divided parts AR and AL of a seedling planting device are faced to the front side of a traveling machine body 3 and the divided parts AR and AL are moved to the central position side in the right and left directions of the traveling machine body 3. The seedling planting device can be changed into a housed posture in which the upper ends of divided seedling placing stands 13R and 13L are mutually approached. The seedling planting device is provided with handles G for artificially operating the seedling planting device so as to house it at the sides of seedling placing faces of the seedling placing stands.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice planting apparatus in which a seedling planting device for cutting out a seedling placed on a seedling platform by a planting mechanism and planting it in a field is connected to a rear end of a traveling machine body. More specifically, the present invention relates to a technology for reducing the lateral dimension of a seedling planting device and storing it.

[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, in this conventional example, only the both sides of the seedling mounting base are folded, so that, for example, when storing a seedling planting device for multiple row planting of 10 rows or more, the lateral dimension is too small. There was room for improvement because it was not possible.

In order to eliminate this inconvenience, the seedling planting device is divided at an intermediate position in the left-right direction, the lateral direction of this divided product is switched to the front-back direction, and this divided product is displaced to the central position in the left-right direction. By doing so, it may be possible to switch to a storage posture in which the divided seedling placing stands are close to each other. However, in the case of changing the posture by dividing the seedling planting device in this way, since the divided piece of the seedling planting device is a heavy object, the posture is changed by an operation of putting hands on the divided piece and applying force. It is difficult to do. Although it is possible to change the posture with an actuator such as an electric motor, it is difficult to put it into practical use because the structure is complicated and the seedling planting device becomes heavy.

An object of the present invention is to practically construct a rice transplanter which can be changed to a storage posture in which the lateral dimension of the seedling planting device can be reduced and which can be easily changed to the storage posture.

[0006]

The features of the present invention (Claim 1) are, as described at the beginning, a rear end of a traveling machine equipped with a seedling planting device for planting seedlings on a seedling platform in a field by a planting mechanism. In the rice transplanter connected to, the seedling planting device is configured to be freely split at an intermediate position in the left-right direction, and the split of the seedling planting device is rotated about a longitudinal axis, and the axial center position thereof. Of the divided seedlings toward the front side of the traveling machine body by the displacement of the divided body, and the divided body is moved to the central position side in the left-right direction of the traveling machine body, and the upper edge of each divided seedling platform. It is configured such that it can be switched to a storage posture in which the two are close to each other, and that a handle for operating the seedling planting device is provided on the seedling mounting surface side of the seedling mounting base. Its action and effect are It is as follows.

[0007]

According to the above feature (claim 1), when the seedling planting device is stored, the seedling planting device is divided, and the operator holds the divided product and rotates it about the longitudinal axis. By performing this operation and the operation of displacing this axial center position, the split postures are such that the upper edge of the split seedling placement table provided for each split object is close to each other at the center position in the left-right direction of the traveling machine body. The size of the seedling planting device in the lateral direction can be reduced by switching to, and the operation can be performed in the opposite direction to restore the storage posture to the workable posture.

That is, according to the present invention, it is possible to store the divided pieces by a manual operation so as to reduce the size in the lateral direction and to restore the posture to a workable state, and not to provide an actuator such as an electric motor. In addition, since the handle provided on the seedling placing surface side of the seedling placing table is used during each operation, the operator can operate the divided objects by applying a strong force both in the pulling direction and pushing direction of the handle in a comfortable posture. Can be done.

According to the second aspect of the present invention, since the guide member of the fertilizer application is also used as the handle, the operator can hold the guide member to store and restore the seedling planting device without specially providing the handle. Becomes

[0010]

As described above, the rice transplanter can be changed to the storage posture for reducing the lateral dimension of the seedling planting device, and can be easily changed to the storage posture and restored from the storage posture to the workable posture. It was constructed practically with a simple structure (Claim 1). In particular, if the handle is also used as the guide member of the fertilizer application device, the number of parts constituting the seedling planting device can be reduced,
There is also an effect of suppressing an increase in cost (claim 2).

[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 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 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. , Equipped with a fertilizer application device B, and at the time of work, the seedling arms 17 cut out the seedlings one by one from the lower end of the mat-like seedling W placed on the seedling placing table 13 and plant the seedlings in the field at the same time. Fertilizer is supplied by the fertilizer application device B under the field scene. In addition, the rotary case 16, the planting arm 17, and a system for driving them constitute a planting mechanism.

As shown in FIG. 2, FIG. 3 and FIG. 5, 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. 6, with the seedling planting apparatus A 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
When L and 13R are connected by the connecting member D (see FIGS. 7 and 8), the sliding rails 28 and 28 are integrally reciprocated in the lateral direction by the power from the transverse feed mechanism.

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 core Y, and the power of the shaft is generated. Is formed to the left and right transmission cases 14 and 14 via the bevel case 32, the pair of output shafts 33 and 33 provided in the bevel case 32, the clutch member 34, and the intermediate shaft 35, respectively. 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 an engaging operation, and the bevel case 32 receives power from the traveling machine side. A transmission system having a bevel gear (not shown) for branching and outputting to two output shafts 33, 33 is installed, and the intermediate shaft 35 is supported so as to maintain a lateral posture with respect to the system of the frame member 20. It is configured with a universal joint.

As shown in FIGS. 4A, 4B, and 5,
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. As shown in FIGS. 2 and 13, a connecting frame 45 that is swingable around a vertically extending support shaft 44 of a bracket 43 attached to the rear end of one of the pair of chain cases 15, 15 at positions sandwiching the dividing surface. When the seedling planting apparatus A is in the working posture, the connecting frame 45 is provided with the connecting mechanism 47 that is detachably connected to the first connecting piece 46 attached to the rear end of the other chain case 15. , The connecting frame 45 and the first connecting piece 46 are connected by the connecting mechanism 47 so as to maintain the working posture, and
The second connecting piece 48 having the same shape as the first connecting piece 46 is also provided at the rear end of the chain case 15 on the side opposite to the split surface of the chain case 15 that swingably supports the connecting frame 45. When the device A is switched to the retracted posture, the connecting frame 45 is separated from the first connecting piece 46 as shown in FIG. 3, and the connecting frame 45 is rotated 180 degrees around the support shaft 44 with respect to the second connecting piece 48. And the connection mechanism 47 is connected.

As shown in FIGS. 14 and 15, the fertilizer applicator B has a hopper 49 for storing granular fertilizer, a feeding mechanism 50 for feeding a predetermined amount of fertilizer from the hopper 49, and a fertilizer from the feeding mechanism 50. Guide pipe 5 that guides downward
1 and a grooving device 52 for feeding the fertilizer from the guide pipe 51 to the bottom of the field, and at the time of fertilizing, the feeding roll 50A incorporated in the feeding mechanism 50 by the force from the rod 53 linked with the planting mechanism. The fertilizer is reciprocally rotated about a lateral drive shaft 54 and is operated so as to feed only the fertilizer that has fallen into the recess (not shown) on the outer surface of the feeding roll 50A, through the guide pipe 51 and the grooving device 52 to the bottom of the field. .

Further, in this fertilizer application device B, the hopper 49 and the feeding mechanism 50 are lifted upward along the seedling placing surface of the seedling placing table 13 to change the height, so that the lower position of the seedling placing table 13 is largely opened. It is configured to be able to. That is, the support piece 5 is provided on the upper surface of the rear portion of each chain case 15.
A guide rail 56 (also used as a handle G) as a guide member is provided in a vertical posture substantially parallel to the seedling placing surface of the seedling placing base 13 via 5, and a roller 57A movable along the guide rail 56. The horizontal frames 5 each having a movable frame 57 having
8 is provided with four left and right hoppers 49 and a feeding mechanism 50 via a support member 59, and further engages with a hole (not shown) formed in the guide rail 56 to form a movable system. It is provided with a lock lever 60 that determines the height between a low-level work position and a high-level lifting position, and a pulley 62 and a wire 63 that actuate the biasing force from the gas spring 61 in the direction of lifting the movable system.

When the movable system is lifted as shown by the phantom line in FIG. 14, after the lock lever 60 is unlocked, a force is applied in the ascending direction so that the gas spring 61 can be gently lifted. During this ascent, the feeding mechanism 5
The connection between the lower end of 0 and the guide pipe 51 is performed, and the lock lever 60 automatically reaches the locked state to maintain the raised state. When lowering the movable system from the lifting position, the lock lever 60 automatically reaches the locked state by performing an unlocking operation of the lock lever 60 and then a downward operation, and the feeding mechanism 5
The lower end of 0 and the guide pipe 51 reach the communicating state, and the work can be performed.

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 sliding rail 28 (see FIG. 8 in this state).
And the distance between the left and right split seedling placement tables 13R and 13L reaches about 30 cm).

Next, after separating the connecting mechanism 47 of the connecting frame 45 from the first connecting piece 46, the connecting mechanism 47 is connected to the second connecting piece 48 by rotating 180 degrees, and the clutch member 34 is attached. By manipulating the guide rail 56, which is also used as the handle G, and manipulating one of the divided parts, the left and right rotating members 37, 37, the pair of wires 44, 44, and the holding wire 41 are artificially separated. , 41 causes the respective frame members 20, 20 to interlock with each other, and the second axis X2,
A system in which the outer end side of the main sprocket 3 is rotated around X2 toward the rear side and, at the same time as this rotation, is supported by the brackets 26, 26 around the first axis X1, X1.
6. Due to the force from the driven sprocket 38 and the chain 39, at a speed twice as fast as the rotation speed of the frame members 20, 20, the direction opposite to the rotation direction of the frame members 20, 20, that is, the left and right outer end portions of each divided object Rotates toward the front of the traveling body 3. Further, at the time of turning to the storage posture, the guide rail 56 is grasped by one hand and the connecting frame 4 is grasped by the other hand.
It is possible to assist the turning operation by grasping 5, and at the time of this turning operation, the hopper 49 of the fertilizer applying apparatus B is raised to expose the guide rail 56 downward, or
The work mode is such that the guide rail 56 exposed above is held without raising the hopper 49.

During this rotation operation, as shown in FIG.
Corner 1 at the upper inner end of the left and right split seedling placement tables 13L, 13R
Although the 3E and 13E are close to each other, the split seedling placing bases 13L and 13R are rotated at positions separated from each other in a plan view,
It is possible to rotate while avoiding contact between the corners 13E and 13E.

Then, in the state where the divided objects AL and AR have reached the retracted posture, as shown in FIG. 10, the left and right divided seedling placing bases 13L and 13R respectively come close to the traveling machine body 3 side on the sliding rails 28 and 28. At the position where the upper end edges of the seedling planting apparatus reach a posture in which they are parallel to each other in a close state, 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 entire rice planting machine and the seedling planting apparatus The dimension of A in the lateral direction is reduced.

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. 11 by the rotation around 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 this retracted posture is restored to the working posture, the operator grips the guide rail 56 which is also used as the handle G, and operates in the opposite direction to the above to divide the split object. As a result of the AL and AR rotating in the opposite direction to the above, the posture of the seedling planting device A in the retracted posture is changed to the working posture by the operation opposite to the above, and the posture changing causes the seedling planting device A to When the posture shown in FIG. 8 is reached, the connecting frame 45 is connected and fixed to the first connecting piece 46, the clutch member 34 is connected, and the right divided seedling mounting table 13R is set on the left side.
It is possible to work by bringing 13L and 13R close to the 3L side and connecting them by a connecting member D, respectively.

[Other Embodiments] In addition to the above embodiments, the present invention is
It is also possible to configure as follows.

(A) As shown in FIGS. 16 and 17, the pair of chain cases 15 and 15 extend between the rear ends of each other,
The grip G in the horizontally long posture is integrally formed with the rod-shaped body 64 to form a handle G overlapping above the seedling mounting surface of the seedling mounting base 13.

(B) As shown in FIGS. 16 and 17, a rod-shaped grip G is formed so as to project from the position of the rib of the seedling placing table 13 to the upper side of the seedling placing surface.

(C) Instead of adopting a structure in which the divided pieces are rotated in conjunction with each other, the divided pieces are configured to be independently rotatable and movable, and a handle is formed on each divided seedling table.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, 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 in a working posture.

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

FIG. 4A is a plan view of a storage operation system in a work posture, and FIG. 4B is a plan view of a storage operation system in a storage posture.

FIG. 5 is a rear view of the main frame and a part of the frame member with a part notched.

FIG. 6 is a side view showing the postures of the first axis and the second axis.

FIG. 7 is a plan view of the rice transplanter with the seedling table placed at the end of the sliding rail.

FIG. 8 is a plan view of the rice transplanter with the seedling placing table divided.

FIG. 9 is a plan view of a rice transplanter in which the seedling planting device is divided and rotated.

FIG. 10 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 11 is a rear view of the seedling planting device in a stored state.

FIG. 12 is a side view of the seedling planting device in the retracted posture.

FIG. 13 is a perspective view of an end portion on a connection side of a connection frame.

FIG. 14 is a side view of the fertilizer application device.

FIG. 15: Rear view of fertilizer application device

FIG. 16 is a side view of a seedling planting device according to another embodiment.

FIG. 17 is a schematic rear view of a seedling planting device according to another embodiment.

[Explanation of symbols]

 3 Traveling machine 13 Seedling placement platform 13L, 13R Split seedling placement platform 49 Hopper 56 Guide member A Seedling planting device AL, AR Divided product B Fertilizer application G Grip W Seedling

Claims (2)

[Claims] 1. A seedling (W) placed on a seedling stand (13)
A seedling planting device (A) which is connected to the rear end of the traveling machine body (3) for performing an operation of cutting out the seedlings with a planting mechanism and planting them in the field, wherein the seedling planting device (A) is It is configured so that it can be freely divided at an intermediate position in the left-right direction, and it also has a split (A)
L) and (AR) are rotated about the longitudinal axis of the longitudinal axis and the axial center position is displaced, so that the lateral outer ends of the divisions (AL) and (AR) are moved to the traveling machine body (3). Point it to the front side,
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 divided seedling placing bases (1)
3L) and (13R) are configured to be switchable to a storage posture in which the upper edges of the seedlings are close to each other, and a handle for operating the seedling planting device (A) on the seedling mounting surface side of the seedling mounting base (13). (G)
Rice transplanter equipped with. 2. A fertilizer application device (B) is provided at the upper surface of the seedling planting device (A), and the height of a hopper (49) provided in the fertilizer application device (B) is changed. The rice transplanter according to claim 1, wherein a guide member (56) for guiding the vertical movement of (49) is also used as the handle (G).