JP3427009B2 - Rice transplanter seedling planting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling placing stand having an inclined posture in which a plurality of seedling placing surfaces are formed, and seedlings cut out from the lower ends of the seedlings placed on the respective seedling placing surfaces for use in a field scene. A rice transplanter comprising a plurality of planting mechanisms for transplanting, a sliding rail for movably supporting the seedling placing table in a lateral direction, and a lateral feed mechanism for reciprocating the seedling placing table along the sliding rails. More specifically, the present invention relates to a technique for reducing the lateral dimension of a seedling mount during transportation by a truck or storage.

[0002]

2. Description of the Related Art As a seedling planting device constructed as described above, there is one shown in Japanese Patent Application Laid-Open No. 10-33033, and in this conventional example, a seedling mount is provided with a seedling mount having a central position. It is composed of the seedling placing parts at both ends, and is configured to be switchable between a state in which the respective seedling placing parts are connected by a lock mechanism and a state in which the connection by the lock mechanism is released to separate the seedling placing parts, and they are transported by a truck. In this case, the connection by the lock mechanism is released to separate the seedling placement parts at both ends, and the seedling placement parts separated in this way are placed on the seedling placement surfaces on both sides of the seedling placement part at the central position. The size of the seedling placing table in the widthwise direction can be reduced by supporting the seedling placing table.

[0003]

When the seedling placing table is to be reduced in size in the width direction, in the case where the both ends of the seedling placing table are separated as in the prior art, the center of the seedling placing portion is The structure is apt to be complicated because the seedling mounting portions at both ends are provided with a lock mechanism at two positions on both ends. Therefore, only one end of the seedling stand is configured to be separable,
With the seedling placing table moved to the end on the side that can be separated, the edge of the seedling placing table is separated to reduce the size of the seedling placing table in the lateral width direction as in the conventional technology. At the same time, it is considered that the structure can be simplified. However, when mounting a separate seedling mounting base,
Since the operator will move the separated seedling platform to the preset mounting position while lifting it up, it will not only be heavy and unwieldy, but it will often take time to set it in the mounting position. There is a demand for a structure that can reduce the size in the width direction by separating the seedling mounting table at a reasonable position. An object of the present invention is to configure a seedling planting device of a rice transplanter that can divide the seedling placing table at a rational position and reduce the size in the lateral width direction by an easy operation.

[0004]

The first feature of the present invention (claim 1) is that the seedling mounts in a slanting posture in which a plurality of seedling mounts are formed and the seedling mounts are mounted on the respective seedling mounts. A plurality of planting mechanisms that cut out the seedlings from the lower end of the seedlings and transplant them to the field scene, a sliding rail that supports the seedling mounting base so that it can move laterally, and a reciprocating movement of the seedling mounting base along this sliding rail. in seedling planting apparatus rice transplanter comprising a lateral feeding mechanism for the end portion
The main seedling mount that connects the separate seedling mount and the separate seedling mount
The seedling stand and the stand form a seedling stand, and the separate seedling stand and the main seedling stand
Provided with a coupling means connectable and separating the pedestal, minutes
The seedling stand and the frame of the seedling planting device are linked together.
And the separated seedling stand and the frame of the seedling planting device
A switchable auxiliary arm is placed in a state in which
In preparation, it is separated from the main seedling stand by disconnecting the connecting means.
Place the separated seedling stand on top of the separated seedling stand and seedling planting equipment.
With the auxiliary arm linked with the ram,
Guide to the storage area formed on the side of the main seedling mounting table
It is configured as possible , and its action and effect are as follows.

A second feature of the present invention (claim 2) is that in claim 1, one end of the auxiliary arm is connected to the separated seedling placing base, and the other end is the seedling planting device. It is configured to be connectable and separable with respect to the frame, and its operation and effect are as follows.

A third aspect of the present invention (claim 3) is that in claim 1, the auxiliary arm has one end connected to a frame of the seedling planting device and the other end separated from the seedling. It is configured so that it can be connected to and separated from the mounting table, and its operation and effect are as follows.

A fourth characteristic of the present invention (claim 4) is that in claim 2 or 3, when the other end of the auxiliary arm is in a connected state, the auxiliary centering on the end on the frame side is the center. It is configured to guide the separated seedling placing table connected to the swing end side to the storage section by swinging the arm, and its action and effect are as follows.

A fifth feature of the present invention (claim 5) is the claim.
In any one of 1 to 4, the auxiliary arm is allowed to be linked only when the seedling placing table reaches a lateral movement end or a position near the movement end. And its action and effect are as follows.

The sixth feature of the present invention (claim 6) is the claim.
In any one of 1 to 5, the separated seedling placing base is separated from the main seedling placing base in a state where the seedling placing base is set at a lateral movement end or a position in the vicinity of the movement end. The auxiliary arm is linked to the separated seedling mounting base and the frame of the seedling planting device only when the separated seedling mounting base thus separated is pulled along the sliding rail to the side away from the main seedling mounting base. It is provided with an automatic linkage mechanism, and its action and effect are as follows.

A seventh characteristic of the present invention (claim 7) is that in any one of claims 1 to 6, the auxiliary arm is arranged on the side opposite to the seedling mounting surface of the seedling mounting base. Yes,
Its action and effect are as follows.

[Operation]

According to the first feature, the separated seedling mounting base is separated from the main seedling mounting base by disconnecting the connecting means,
When setting this separated seedling placing stand in the storage part, the auxiliary arm is linked to the separating seedling placing stand and the frame of the seedling planting device so that the auxiliary seedling can bring the separated seedling placing stand to the storing part. Since it is possible to guide, it is not necessary to perform the operation of lifting the separated seedling placing stand in a separated state as in the conventional example, and the separated seedling placing stand is moved only by moving the separated seedling placing stand in the direction guided by the auxiliary arm. Can be sent to an appropriate position in the storage unit. In particular, since one end of the auxiliary arm is linked to the frame of the seedling planting device, for example, it is possible to provide stronger support as compared to one in which one end of the auxiliary arm is linked to the main seedling mounting table, and the separated seedling mounting table can be mounted. It will be possible to provide stable and highly accurate guidance.

According to the above-mentioned second feature, since one end of the auxiliary arm is connected to the side of the separated seedling placing base, when the separated seedling placing base is set in the storage portion, the other end of the auxiliary arm is connected. It is only necessary to connect the end of the to the frame of the seedling planting device, and a single structure for this connection is required.

According to the third feature, since one end of the auxiliary arm is connected to the frame of the seedling planting device, when the separate seedling placing table is set in the storage part, the other end of the auxiliary arm is not connected. It is only necessary to link the end of the to the separate seedling mounting base, and a single structure for this linkage will suffice.

According to the fourth feature, when the auxiliary arm is set in the linked state, the separated seedling placing table linked to the swing end is oscillated by the swing of the auxiliary arm around the end on the frame side. It guides along an arcuate trajectory, and the separated seedling placement table can be set in the storage unit with a simple operation mode based on a strong frame.

According to the fifth feature, only when the seedling placing table reaches the moving end position or a position in the vicinity of the moving end, the auxiliary arm is provided on the separate seedling placing table and the frame of the seedling planting device. Since it is allowed to cooperate with each other, avoiding the inconvenience of setting the seedling placing table in the wrong position and performing the cooperation, with the seedling placing table set in an appropriate position, the seedling placing on the end side is performed. The stand can be separated and stored, and the side closer to one of the seedling mounts is separated, so that it is not necessary to separate both ends as in the conventional example.

According to the sixth feature, the separated seedling stand is separated from the main seedling stand and slid while the seedling stand is set at the moving end in the lateral direction or at a position near this moving end. Only when operated along the rail in a direction away from the main seedling mounting table, the automatic linkage mechanism links the auxiliary arm between the separated seedling mounting table and the frame of the seedling planting device, so that the seedling mounting table is incorrect. It is not possible to store the separated seedling placement table in the state where it is set to the closed position, and the automatic linkage of the auxiliary arm can eliminate the labor for the worker to perform the linkage manually. .

According to the seventh feature, by arranging the auxiliary arm on the anti-seedling surface of the seedling mounting table, the seedling mounting apparatus does not interfere with the mounting of the seedlings on the seedling mounting table, and the seedling planting device is provided. It is also possible to easily link to the frames of.

[Effect of the invention] Therefore, the seedling planting of the rice transplanter capable of reducing the size in the lateral direction by the easy operation of dividing the seedling placing table and guiding the separated seedling placing table through the auxiliary arm. The device was reasonably constructed (Claim 1).
In addition, the auxiliary arms can be easily linked to each other without complicating (claims 2 and 3), and the seedling stand is divided into reasonable positions and separated while having a simple and small number of parts. The seedling stand can be set in the storage section with high precision (claim 4), and when the lateral width of the seedling stand is reduced, the seedling stand is necessarily set at an appropriate position and the auxiliary arm is used for reduction. It can be operated (Claim 5),
When reducing the lateral width of the seedling stand, set the seedling stand at an appropriate position and simply start the operation to perform the shrinking, and the auxiliary arm will automatically switch to the linked state and this auxiliary arm will be used. The reduction operation can be performed (Claim 6), the auxiliary arm does not hinder the seedling planting work, and the frame of the seedling planting device and the auxiliary seedling stand can be arranged in a position to be linked with each other at the shortest distance. (Claim 7).

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a steering type driven front wheel 1 and a driven rear wheel 2 are operated.
The engine 3 is mounted on the front part of a traveling machine body including the above-mentioned traveling machine body, and the hydrostatic continuously variable transmission H, which transmits power from the engine 3 to the front part of the traveling machine body,
The transmission case 4 in the front position to which the power from the transmission is transmitted and the rear axle case 5 in the rear position to which the power from the transmission 4 is transmitted are arranged, and the steering handle 6 and the steering handle 6 are provided at the center of the traveling machine body. The driver's seat 7 is arranged, and the seedling planting device A for 8-row planting is connected to the rear end of the traveling machine body via a parallel four-link type link mechanism L driven and lifted by a lift cylinder 8. Further, a fertilizer application device B is provided at the rear of the traveling machine body to configure a rice transplanter as a paddy field working machine.

A differential mechanism (not shown) for transmitting power to the left and right front wheels 1, 1 is provided in the mission case 4, and an inter-plant shift for setting the number of seedling planting operations of the plant A for planting per unit travel distance. In addition to incorporating a mechanism (not shown), it also incorporates a planting clutch C that transmits and disconnects power from the mission case 4 to the seedling planting device A.
Further, the rear axle case 5 has a transmission mechanism (not shown, not provided with a differential mechanism) for transmitting power to the left and right rear wheels 2, 2.

A main shift lever 9 for shifting the continuously variable transmission H is provided on the left side of the meter panel section in front of the driver's seat 7.
Is arranged on the left side of the driver's seat 7, and an auxiliary gear shift lever 10 for shifting the gear-type auxiliary transmission (not shown) in the mission case is arranged on the left side of the driver's seat 7. The seedling planting device is arranged on the right side of the driver's seat 8. An elevating lever 11 for performing the elevating control of A and the control of the planted clutch C is arranged, and a forced elevating lever 12 is arranged in the vicinity of the steering handle 7. The elevating lever 11 controls the elevating and lowering of the seedling planting device A and the ON / OFF control of the planting clutch C, and the forcible elevating lever 12 forces the seedling planting device A in the grounded state to the upper limit. The control for raising, the control for disengaging the planting clutch C in conjunction with this forcible raising, and the control for forcibly lowering the seedling planting apparatus A in the raised state to the ground level by this forcible raising control are performed. The planted clutch C is configured to be turned on and off by the driving force of the electric motor CM as shown in FIG.

As shown in FIGS. 1 to 6, the link mechanism L is composed of a pair of left and right top links 15, a pair of left and right lower links 16, and a vertical link 17 at the rear end. The transmission case 18 of the seedling planting apparatus A is connected to the section in a freely rotatable manner around the rolling axis X in the front-back orientation. Further, a transmission shaft 19 for transmitting the power from the traveling machine body 3 is formed to the transmission case 18, and the seedling planting apparatus A has the transmission case 18 and a horizontally long rectangular pipe-like shape connected to the transmission case 18. The tool frame 20 is connected to and fixed to the tool frame 20, four chain cases 21 to which the power from the transmission case 18 is branched and transmitted, and the tool frames 20 are arranged at the left and right positions of the rear portions of the respective chain cases 21. Eight-row planting mechanism D and a tilted seedling stand 2 on which a mat-like seedling W is placed
Two and five leveling floats 23 are provided. Note that, of the five ground leveling floats 23, the center position 23C in the left-right direction is used as a sensor float when the seedling planting apparatus A is controlled to move up and down by following the field scene S.

The fertilizer application device B includes a hopper 26 for storing granular or powdered fertilizer, and the hopper 26
The eight-row feeding mechanism 27 that feeds the fertilizer from the feeding mechanism, the blower blower 28 that is driven by the blower motor 28M to feed the fertilizer fed from the feeding mechanism 27 by the wind pressure, and the fertilizer is fed by the blowing action from the blowing blower 28. 8 sent
It is provided with a fertilizer hose 29 of a book and eight groovers 30 supported by the five leveling floats 23 so as to send the fertilizers from the fertilizer hose 29 under the field scene S.

As shown in FIGS. 7, 8 and 12, the planting mechanism D includes a rotary case 33 which rotates around the axis in a lateral posture by the power from the chain case 21, and a pair of the rotary case 33. Attached arm 34
And a planting claw 35 provided on each planting arm 34, and the planting claw 35 cuts out the seedling from the lower end of the mat-like seedling W placed on the seedling placing table 22 during the planting work. It is configured to perform the operation of transplanting to S. In addition, each chain case 21 has a built-in ridge clutch E at the rear end thereof, and the disengagement operation of this ridge clutch E cuts off the transmission to the pair of left and right rotary cases 33 to stop the two-row planting. It is possible. As shown in FIGS. 5 and 6, on the left side surface of the transmission case 18, the screw shaft 37 in which the spiral groove 37S is formed is covered with a rubber bellows and protrudes around the axis of the sideways posture. The transverse feed mechanism F is configured by fixing the top member 38, which is provided in the spiral groove 37S of the screw shaft 37, on the side opposite to the seedling placing surface of the seedling placing table 22 via the holder 39. The lateral feeding mechanism F causes the seedling placing table 22 to reciprocate laterally.
Further, a drive shaft 41 is arranged on the right side surface of the transmission case 18 so as to be rotatable around a shaft posture in a horizontal posture.
On the other hand, a pair of drive arms 42, 42 are provided at intervals equal to the stroke of the reciprocating movement of the seedling placing table 22 by the screw shaft 37.

As shown in FIGS. 2 and 3, a sliding rail 43 in a horizontal position is provided on the upper surface of the chain case 21, and a horizontal position is provided in the vertical center position on the side opposite to the seedling mounting surface of the seedling mounting table 22. Guide rails 44, and left and right struts 45 standing on both ends of the tool frame 20 and a horizontally long pipe frame 46 extending between the left and right struts 45, and a guide shoe 47 on the lower surface of the seedling stand (see FIG. 21). (Refer to FIG. 7) to FIG.
By engaging a plurality of guide rollers 48 provided on the pipe frame 46 with the guide rails 44, the slide rails 43 and the guide rails 44 movably support the seedling placing table 22 in the left-right direction. Incidentally, at both ends of the tool frame 20, there are provided protective frames 49 made of a round pipe which are shaped to project to the left and right outer ends of the slide rail 43.

As shown in FIGS. 3 and 4, a balance spring 51 is provided between the upper end position of the vertical link 17 and the seedling placing table 22, and a rolling motor 52 is provided at the upper end of the vertical link 17. A rolling spring 54 is provided between both ends of a rod 53, which laterally operates in a screw type by a driving force, and the pipe frame 46.
The rolling operation system for rolling the seedling planting apparatus A with the driving force of is constructed. With this configuration, even when the seedling placing table A slides left and right and the left and right weight balance is lost, the posture of the seedling planting apparatus A is not greatly disturbed by the biasing force of the balance spring 51, and the traveling machine body The rolling motor 52 when the
By operating the rod 53 with the driving force of the above to correct the rolling posture of the seedling planting apparatus A via the rolling spring 54, the seedling planting apparatus A can be maintained in the posture of following the field scene S. There is.

As shown in FIG. 2, FIG. 3, FIG. 18, and FIG. 19, the seedling placing table 22 is provided with eight seedling placing surfaces 22B having vertical walls 22A arranged at the boundary positions, and the respective seedling placing surfaces are arranged. 22B is provided with a plurality of seedling stays 58 for preventing the mat-like seedlings W from rising, a vertical feeding mechanism G for feeding the matted seedlings W downward, and a seedling residual amount sensor T in a state of being installed in the vertical wall 22A. ing. The seedling stay 58 is supported between the pillar body 59 at the upper position and the support plate 60 at the lower position. As shown in FIG. 16, FIG. 21, FIG. 22, and FIG. 23, a vertical feed shaft 61 having a hexagonal cross-section is provided at the lower part of the seedling stand 22 so as to be rotatable around an axis in a horizontal posture. G is a lower roller 62 fitted onto the vertical feed shaft 61.
And an upper roller 63 arranged above this and a vertical feed belt 64 wound around these (as shown in the figure, a pair of left and right vertical feeds with respect to one seedling placing surface 22B). The belt 64 is arranged). Also, the vertical feed shaft 61
The left and right drive arms 42, 42 are provided with an operated arm 65, and a one-way clutch 66 for transmitting the driving force from the operated arm 65 to the vertical feed shaft 61.
A vertical feed clutch J that is operated via a lever 67 to transmit the rotational power from the vertical feed shaft 61 to two adjacent vertical feed mechanisms G, G is provided between adjacent lower rollers 62. Further, the seedling remaining amount sensor T includes a contact piece 68 that is urged so as to contact the mat-shaped seedling W placed on the seedling placing table 22, and the posture of the contact piece 68 indicates whether the seedling W is present or not. And a limit switch 69 for determining

The ground leveling float 23 is supported so that its front end portion is displaced up and down by swinging around the axis of the rearward position in the lateral position. Of the ground leveling float 23, the float at the center position in the horizontal direction. The lift cylinder 8 is provided with a detection system that measures the relative distance between the seedling planting device A and the field scene S in the vertical direction from the swinging posture of 23C, and maintains the detection result from this detection system at a target value. Elevating control means (not shown) for controlling is provided. Further, as shown in FIG. 3, a seedling removal amount adjusting lever 72 and a planting depth adjusting lever 73 are provided on the front side of the seedling planting device A in a state of being engaged with and supported by a lever guide 71. Levers 72, 73
Of these, the seedling picking adjustment lever 72 is operated in the vertical direction to displace the sliding rail 43 in the vertical direction, and the amount of seedlings to be taken out is adjusted from the change of the operation locus of the planting claw 35 and the relative position of the sliding rail 43. Further, the planting depth lever 73 is adjusted up and down to vertically move the rear end position of the leveling float 23, thereby changing the relative position between the operation locus of the planting claw 35 and the field scene S. Therefore, the depth of the planting claw 35 into which the seedling is inserted in the field scene S can be adjusted.

With this configuration, when transplanting the seedlings, the seedling planting device A of the seedling planting apparatus A is followed by following the field scene S with the seedling taking amount and the planting depth set to necessary values. By operating the planting clutch C in a control state of raising and lowering, the seedling mounting table 22 is fed to the seedling mounting table 22 laterally along the slide rail 43 by the driving force from the lateral feed mechanism F. The planting claws 35 sequentially cut out the seedlings at the lower end of the placed mat-like seedlings W in the lateral direction and transplant them to the field scene S, and when the seedling mounting table 22 reaches the end portion in the lateral movement direction, the drive arm 42 is covered. By contacting the operation arm 65, the vertical feed shaft 61 is rotated by a set amount to operate each vertical feed mechanism G to feed the mat-shaped seedling W downward. When reducing the number of planting lines of seedlings, four edge clutch levers 74 which are linked to the edge clutch E and the longitudinal feed clutch J are used.
By selecting any one of (see FIG. 1) and performing a cutting operation, it is possible to stop the planting of two planting units.

In this seedling planting apparatus A, the two seedling mounting surface portions of the end portions of the seedling mounting base 22 opposite to the operated arm 65 are set as the separated seedling mounting bases 22S, and the remaining six rows. The seedling mounting surface portion of the main seedling mounting table 22M is set to the main seedling mounting table 22M, and the separate seedling mounting table 22S is configured to be connectable and separable to the main seedling mounting table 22M via the connecting means K.
Seedling placing surface 2 at the end position on the side of 2M separation seedling placing table 22S
A storage part P for supporting the separated seedling placement table 22S is formed on the side of 2B, and an auxiliary arm 7 for guiding the separated seedling placement table 22S separated by the uncoupling of the connecting means K to the storage part P.
Equipped with 7.

That is, the guide rail 44 is preliminarily divided into dimensions corresponding to the main seedling placing table 22M and the separated seedling placing table 22S. As shown in FIGS. A bush 78 that is preliminarily divided into dimensions corresponding to the table 22M and the separated seedling mounting table 22S, and is externally fitted to the end of the vertical feed shaft 61 on the side of the separated seedling mounting table 22S at the position of the dividing surface to rotate integrally. Is provided so as to be slidably fitted onto the vertical feed shaft 61 on the main seedling placing table 22M side, and is urged by a spring 79 in the protruding direction. The seedling stays 58 of 6 rows of the main seedling mounting table 22M and 2 rows of the separated seedling mounting table 22S are formed.
As shown in FIGS. 16 and 18, the seedling remaining amount sensor T located on the dividing surface is provided via a support plate 80 attached to the main seedling placing table 22M side.

The connecting means K is, as shown in FIGS. 13 to 19, a nut 8 fixed to the end of the main seedling stand 22M.
1 and a knob 82 that laterally penetrates the separated seedling placing table 22S.
As shown in FIG. 11 and FIG. 12, a pair of upper and lower lock screws composed of a screw shaft 82 with N and a clamping member 83A at the base end by swinging operation causes a vertical wall 22A on the side of the separated seedling placing table 22S. And a vertical wall 22A on the main seedling placing table 22M side, and three lock levers 83 provided with a pinching portion 83A that can be switched between a state in which they are pinched and connected and a state in which the pinched state is released. There is. Further, by arranging the position of the lower knob 82N near the upper surface of the sliding rail 43, the sliding rail 43 is moved to the sliding rail 43 only when the seedling placing table 22 reaches the stroke end on the side of the separated seedling placing table 22S. The turning operation can be performed without being hindered (see FIG. 16). Further, as shown in FIG. 22, at the lower position of the dividing surface between the main seedling placing table 22M and the separated seedling placing table 22S, as shown in FIG.
Separation seedling placing table 22S by swinging around the axis 85 on the side of M
The rocking piece 87 that engages with the engaged portion 86 of is urged in the engaging direction by the urging force of the spring 88. When it reaches the end on the side, it abuts against the abutment piece 89 provided on the slide rail 43 to swing in the disengagement direction against the biasing force of the spring 88. In addition, as shown in FIG. 17, a limit switch type separation sensor 90 is provided in the vicinity of the nut 81 constituting the upper lock screw to detect separation of the separated seedling placement table 22S from the side of the main seedling placement table 22M. ing. The separation sensor 90 has a sensor main body supported by a constituent member of the main seedling mounting table 22M, and a contact piece protruding from the sensor main body contacts a constituent member of the separation seedling mounting table 22S to determine the presence or absence of contact. Things are used.

As shown in FIG. 24, a through hole 91 is formed at an upper position of the dividing surface of the main seedling placing table 22M.
1 is provided on the side of the divided seedling placing table 22S, and as shown in FIGS. 7 to 12, 20, and 25, the storage part P is the seedling of the main seedling placing table 22M. Mounting surface 22B
The rubber supporting member 96 provided on the outer end side of the arch-shaped rod 95 provided at the upper position on the side of and the spring plate member 97 for engagement on the inner end side are provided, and the seedlings of the main seedling placing table 22M are provided. Arch-shaped rod 9 provided at a lower position on the mounting surface 22B side
8, a rubber-made support member 96 provided at both end positions, and at this lower position, the lower part of the separated seedling placing table 22S can be swung about a shaft in a horizontal posture so as to press it from above, and a pressing direction by a spring 99. Pressure rod 100 biased to
And is configured. The spring plate member 97 has an engagement hole 97A and a guide surface 97B. The grip 101 is provided at a lower position on the seedling mounting surface side of the separated seedling mounting table 22S.
(See FIG. 19).

As shown in FIGS. 15, 17, and 24 to 29, the auxiliary arm 77 is made of a material in which a metal plate is formed into a wide channel in the up and down direction, and the auxiliary seedling stand 22S is provided. The support member 103 connected and fixed to an intermediate position in the up-and-down direction is swingably supported around a vertically oriented support shaft 104, and the lower surface of the end of the auxiliary arm 77 on the side opposite to the support member is opposite. A horizontal contact surface 77S is formed in a state where the contact surface 77S is continuous with the inclined surface that is at a lower level on the support member side, and a guide roller 105 that is idle supported around the axis of the lateral attitude is provided near the inclined surface. Further, a shaft body 106 in a vertically oriented posture is provided so as to project downward at this end portion, and a contact arm 107 is provided at the lower end of the shaft body 106. In addition, the support member 1 is provided in the vicinity of the support shaft 104
The engaged member 108 fixed to the No. 03 is arranged, and the lock piece 109 that engages and disengages with the engaging hole 108A of the engaged member 108 is slidable along the longitudinal direction of the auxiliary arm 77. By equipping one end of 110 with a spring 111 for urging the lock piece 109 toward the engagement hole 108A, the lock piece 1 for the engagement hole 108A is provided.
The auxiliary arm 77 is separated by the engagement of 09 with the seedling placing table 22.
The rod 110 is configured so that it can be maintained in a posture parallel to S, and the end portion of the rod 110 on the side opposite to the lock piece is bent to form the operated portion 110A.

Further, the bracket 113 is provided with a bracket 113 in which an upper wall and a lower wall are integrally formed by bending a metal plate to the end of the pipe frame 46 on the side of the separated seedling placing table 22S. An arcuate contact member 114 that holds the shaft body 106 is provided between the upper wall and the lower wall, and guide recesses 113A and 113A for guiding the shaft body 106 to the contact member 114 are used as the upper wall. A pair of lock arms 117 that are formed on the lower wall and that are urged by springs 115 to engage and hold the shaft body 106 that is in contact with the contact member 114 and that is swingable around the shaft 116. Further, the separated seedling placing table 22 is connected to the upper wall of the bracket 113.
A guide surface 1 which is an inclined surface having a higher level on the outer end side of S
13S is formed.

As shown in FIGS. 32 and 33, the protection frame 49 is supported so as to be able to move laterally with respect to the tool frame 20, and lock holes 49A, 49A are provided on the base end side and the tip end side. The tool frame 2
0 to the support member 118 fixed to each lock hole 4
9A and 49A are provided with lock pins 119 that can be engaged and disengaged in a state of being biased by a spring 120 in the engaging direction. Also, FIG.
As shown in (a) and (b), the slide rail 43 is connected to the main slide rail 43M and the separate slide rails 43S, 43S at both ends of the slide rail body 43M so as to be separable and connectable. Configured. Specifically, the main sliding rail 4
Wing nuts 123 screwed onto the bolts 122 provided on the lower surface of the main sliding rail 43M are provided on the lower surface sides of both ends of the 3M, and the bolts 122 are externally fitted to the lower surface sides of the split ends of the separation sliding rail 43S. The plate 125 is provided with a notch so as to be fastened by the collar 124. When the sliding rail 43 is divided, the wing nut 12
3 is loosened and the separation slide rail 43S is pulled outward to separate the main slide rail 43M from the separation slide rail 4M.
3S can be removed. The detached slide rail 43S thus removed is locked to the locking pieces 126 provided on the left and right columns 45, respectively, by locking the left and right sides through the openings of the locking pieces 126. It is held by A.

In this rice transplanter, the lateral width of the seedling planting device A has a dimension of about 2.7 meters. By reducing this dimension, the lateral dimension of the loading platform of the 4-ton truck is within 2.4 meters. It fits in. When the size is reduced, the operation is performed in the following procedure.

First, by operating the lifting lever 11, the planting clutch C is turned on and controlled to move the seedling placing table 22 to the end portion on the side of the separated seedling placing table (the moving end on the left side in the figure), and this end portion is moved. The clutch C for planting is disengaged to stop the movement at the timing of reaching, and then, in this state, the separated seedling placement table 22S is separated from the main seedling placement table 22M by operating the lock screw knob 82N and the lock lever 83. To do. When the seedling placing table 22 is set at the end position in this way, the swinging piece 87 reaches the disengagement posture by the contact with the contact piece 89 as shown in FIG. The seedling stand 22S can be moved outward along the slide rail 43. Then, as shown in FIG. 17 and FIG.
By pulling S outward, the separated seedling placing table 22S and the auxiliary arm 77 are integrally moved outward,
As shown in FIGS. 26 and 27, the guide roller 105 of the auxiliary arm 77 is brought into contact with the guide surface 113S of the bracket 113 by this movement to lift the separated seedling placing table 22S upward, and further continue the moving operation. At the same time that the contact surface 77S of the auxiliary arm 77 has reached the state of riding on the upper surface of the bracket 113, the shaft body 106 of the auxiliary arm 77 contacts the contact member 114 of the bracket 113 as shown in FIG. As a result, the lock arm 117 holds the shaft 106 and reaches the locked state. An automatic linking mechanism is configured by a system that sets the auxiliary arm 77 in the linked state by moving the separated seedling placing table 22S in this manner.

When this state is reached, the operated portion 110A at the end of the rod 110 contacts the contact member 114 to separate the lock piece 109 from the engaging hole 108A of the engaged member 108 and the auxiliary arm 77. It is allowed to swing around the support shaft 104, and in this state, the guide shoe 47 of the auxiliary seedling placing table 22S is lifted from the sliding rail 43 by lifting the separated seedling placing table 22S, and FIG. As shown, as a result of the notch portion 44A formed on the guide rail 44 of the separated seedling placing table 22S reaching the position of the guide roller 48, the separated seedling placing table 22 is not hindered by these.
The S can be pulled out backwards.

Next, when the operator holds the handle 101 and pulls out the separated seedling placing table 22S rearward, as shown in FIG. 25, the auxiliary arm 77 causes the shaft 1 to move.
Separation seedling stand 2 by swinging around the axis of 06
2S is guided to the side of the main seedling mounting base 22M, and at the same time, the posture of the seedling mounting surface 22B of the separation seedling mounting base 22S is adjusted by the swing of the separation seedling mounting base 22S around the support shaft 104. You can maintain the posture parallel to the mounting surface 22B,
By sending the separated seedling mounting table 22S to the moving end of this swing, the separated seedling mounting table 22S can be set at the storage position P. At the time of this setting, the engagement pin 92 is the spring plate member 9
7 is engaged with the engagement hole 97A (see FIG. 30).
Further, as shown in FIG. 12, by pressing the lower part of the separated seedling mounting table 22S by the pressing rod 100 in this state, the separated seedling mounting table 22S can be held in the storage part P. In this way, when the separated seedling placing table 22S is set in the storage part P, only one line inside the separated seedling placing table 22S is the main seedling placing table 22S in plan view.
It overlaps with M, and this overlapping amount, that is, 1
Seedling table 22 only for the dimensions of the row (about 30 cm)
The width of can be reduced.

When the auxiliary arm 77 guides the separated seedling placing table 22S to the storage section P, the contact arm 107 formed at the lower end of the shaft body 106 at the initial stage of the swing operation is the lower surface of the lower wall of the bracket 113. 25, the auxiliary arm 77 is restrained from tilting, and as shown in FIG. 25, the auxiliary arm 77 has a dead point in a posture orthogonal to the seedling placing surface 22B of the main seedling placing table 22M. Since it exceeds DP, the position of the separated seedling placement table 22S set in the storage part P is stable in a state of being supported by the main seedling placement table 22M by its own weight.

Thereafter, the butterfly bolt 123 is loosened to remove the separation slide rails 43S, 43S at both ends, and the locking pieces 126 (see FIG. 9) provided on the left and right columns 45 are shown in FIG. As shown, the lock pin 119 is locked in a state of being inserted into the opening, the lock pins 119 of the protection frames 49 at both ends are extracted, and the protection frames are pushed inward. The lateral width of the whole seedling planting apparatus A is reduced by inserting. After this, the auxiliary seedling stand 22S is replaced with the main seedling stand 22M.
When connecting to, the reverse operation is sufficient.

In this rice transplanter, a control system for raising and lowering control and for controlling the planting clutch C is provided with a control device 130 having a microprocessor as shown in FIG. That is, with respect to the control device 130, the position of the potentiometer-type lever sensor 11S that measures the operation position of the elevating lever 11, the compulsory elevating switch 12S that detects the operation of the compulsory elevating lever 12, and the posture of the leveling float 23C are measured. Signals from the float sensor 23S, the sensitivity setting device 131S operated by the sensitivity setting dial 131, the upper limit sensor 132 that determines that the seedling planting device A has reached the upper limit from the posture of the link mechanism L, and the separation sensor 90. Is formed, and a solenoid valve 8V for controlling hydraulic oil for the lift cylinder 8 is formed.
A system that outputs a control signal to each of the electric motors CM that controls the planted clutch C is formed. Then, in this control device 130, when the ground leveling float 23 of the seedling planting device A is grounded to the field scene S and the elevation control that follows the field scene S is performed, the sensitivity value set by the sensitivity setting device 131S is used. The automatic control for maintaining the posture of the leveling float 23C to the target posture is performed, and the forced lift lever 12 indicates that the forced lift lever 12 has been operated in the upward direction during this automatic control.
When detected by the signal from S, the solenoid valve 8V is controlled in preference to the automatic control to start the raising of the seedling planting device A, and the electric motor CM is also controlled to disengage the planting clutch C. When the upper limit sensor 132 detects that the seedling planting apparatus A has risen to the upper limit, the raising is stopped, and further, the fact that the forcible raising / lowering lever 12 has been operated in the lowering direction in this raised state is detected from the forced raising / lowering sensor 12S. When the signal is detected, the seedling planting apparatus A is lowered until the leveling float 23 is grounded, and after the leveling float 23 is grounded, the automatic control is resumed. In particular, in the control device 130, when it is detected by the signal from the separation sensor 90 that the separated seedling mounting table 22S is separated from the main seedling mounting table 22M, the planting clutch C is operated even when the lifting lever 11 is operated.
The program is set so that the entry control cannot be performed.

As described above, in the present invention, the auxiliary arm 77 is used.
Since one end of the one is supported on the side of the separated seedling placing table 22S, a single linking portion which should be detachably configured can be made simpler than the one linking both ends to enable simplification of the structure. At the same time, when reducing the widthwise dimension of the seedling planting apparatus A, the seedling placing table 22 is set to the position of the moving end on the side of the separated seedling placing table 22S, and the connecting means T is released to perform the manual operation. The auxiliary arm 77 is automatically linked to the side of the pipe frame 46 on the side of the seedling planting device A by simply separating the separated seedling mount 22S from the main seedling mount 22M. By performing an operation of moving the separated seedling mounting table 22S to the side of the seedling mounting surface with the swing of the auxiliary arm 77, the separated seedling mounting table 22S is moved along the arc-shaped locus to store the separated seedling mounting table 22S in the storage part P. Guide you to the correct position. To have. In particular, when the seedling placing table 22 is set to the moving end on the side of the separated seedling placing table 22S, it has a structure that allows the separated seedling placing table 22S to be separated. There is no inconvenience to start the operation, and the auxiliary arm 77 is automatically linked only when the seedling placing table 22 is set at an appropriate position and the separated seedling placing table 22S is separated and moved outward. Therefore, the operation of the operator can be saved, and the auxiliary arm 77
The separated seedling placing table 22 is stored in the storage part P by a smooth operation by swinging the
The size of the seedling placing table 22 can be easily reduced by setting the seedling placing table 22 in the horizontal direction.

[Other Embodiments] In addition to the above embodiments, the present invention supports, for example, one end of the auxiliary arm 77 on the pipe frame 46 of the seedling planting apparatus A so as to be swingable, and is not linked. Occasionally, the swinging of the auxiliary arm 77 is regulated, the seedling placing table 22 is moved toward the moving end, the separated seedling placing table 22S is separated, and further moved in the separating direction, the same regulation as in the embodiment of the present invention. It is also possible to implement by configuring so as to allow the oscillated swing and automatically connect the other end of the auxiliary arm 77 to the side of the separated seedling placing table 22S.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

[Fig. 2] Plan view of the seedling planting device

[Figure 3] Front view of the seedling planting device

FIG. 4 is a front view of the seedling planting device in a stored state.

FIG. 5 is a schematic plan view of a seedling planting device.

FIG. 6 is a schematic plan view of the seedling planting device in a stored state.

[Figure 7] Side view of seedling planting device

FIG. 8 is a side view of the seedling planting device in a stored state.

[Fig. 9] Side view of the upper part of the seedling planting device

FIG. 10 is a side view of the lower part of the seedling planting device.

FIG. 11 is a side view of the upper portion of the seedling planting apparatus in the stored state.

FIG. 12 is a side view of a lower portion of the seedling planting device in a stored state.

FIG. 13 is a front view of the end position of the seedling placing table.

FIG. 14 is a front view of an end position of the seedling placing table in a separated state.

FIG. 15 is a front view of the upper part of the seedling placing table at the end position.

FIG. 16 is a front view of the lower part of the end position of the seedling placing table.

FIG. 17 is a front view of the upper part of the end position of the seedling stand in a separated state.

FIG. 18 is a front view of a lower portion of an end position of the seedling placing table in a separated state.

FIG. 19 is a rear view of the lower part of the separated seedling placing table.

FIG. 20 is a bottom view of the state where the separated seedling placing table is set in the storage position.

FIG. 21 is a side view of the drive system of the vertical feed mechanism.

FIG. 22 is a front view of the lower portion of the divided portion.

FIG. 23 is a cross-sectional view showing a vertical feed shaft of a divided portion.

FIG. 24 is a plan view of an auxiliary arm.

FIG. 25 is a plan view showing an auxiliary arm in a stored state.

FIG. 26 is a front view of the auxiliary arm.

FIG. 27 is a front view of the auxiliary arm in a moving state.

FIG. 28 is a sectional view showing a lock structure of an auxiliary arm.

FIG. 29 is a plan view showing a lock arm.

FIG. 30 is a perspective view showing a spring plate member.

FIG. 31 is a view showing a connected state and a separated state of the sliding rails.

FIG. 32 is a plan view of a protective frame.

FIG. 33 is a sectional view of a protective frame.

FIG. 34 is a block circuit diagram of a control system.

[Explanation of symbols]

22 seedling stand 22B seedling mounting surface 22M Main seedling mount 22S Separation seedling platform 43 Sliding rail 77 Auxiliary arm A seedling planting equipment D planting mechanism F Traverse mechanism K connection means P storage W seedling

Claims (7)

(57) [Claims] 1. A seedling placing stand having an inclined posture in which a plurality of seedling placing surfaces are formed, and a plurality of plantings for cutting seedlings from the lower ends of the seedlings placed on the respective seedling placing surfaces and transplanting the seedlings into a field scene. Mechanism,
A sliding rail that supports the seedling stand so that it can move laterally,
A seedling planting device of a rice transplanter comprising a transverse feed mechanism for reciprocating the seedling placing table along the sliding rail, wherein the separated seedling placing table at the end position and the separated seedling placing table are connected.
The main seedling mounting table and the seedling mounting table are configured and separated.
Connection means that can connect and separate the seedling stand and the main seedling stand
And is connected to the separated seedling placing table and the frame of the seedling planting device.
And the separated seedling mounting table and seedling planting device
In the state where the linkage with the ram is released, the switchable auxiliary
An auxiliary arm is provided, which is separated from the main seedling placing table by disconnecting the connecting means.
Separate the separated seedling mounting table with the separated seedling mounting table
The auxiliary device is linked to the frame of the device.
Are formed on the side of the seedling mounting surface of the main seedling mounting base
A rice planting device for rice transplanters that is configured to guide you to the storage area . 2. The auxiliary arm is configured such that one end of the auxiliary arm is connected to the separated seedling placing table and the other end is connectable and separable with respect to the frame of the seedling planting device. The seedling planting device of the rice transplanter according to 1. 3. The auxiliary arm is configured such that one end of the auxiliary arm is connected to a frame of the seedling planting device, and the other end of the auxiliary arm is connectable to and separable from a separate seedling placing table. The seedling planting device of the rice transplanter according to 1. 4. When the other end of the auxiliary arm is in a connected state, the auxiliary seed arm is pivoted about the end on the frame side so that the separated seedling placing stand connected to the swing end is formed. The seedling planting device of the rice transplanter according to claim 2 or 3, which is configured to guide the storage unit. Wherein said seedling stand lateral moving end, or, this only when it reaches the vicinity of the moving end, the claim linkage is configured to be allowed in the auxiliary arm 1
The rice seedling planting apparatus of the rice transplanter according to any one of items 1 to 4 . 6. The separated seedling placing table is separated from the main seedling placing table with the seedling placing table set at a lateral moving end or at a position in the vicinity of the moving end. Equipped with an automatic linking mechanism that links the auxiliary arm to the separated seedling placement table and the frame of the seedling planting device only when the seedling placement table is pulled along the sliding rail to the side away from the main seedling placement table. In any one of claims 1 to 5,
Seedling planting equipment for the rice transplanters listed above. 7. The auxiliary arm is arranged on the side opposite to the seedling mounting surface of the seedling mounting table.
Seedling planting device of the rice transplanter according to the item.