JPH09191720A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter equipped with a measuring means, etc., for measuring relative distance of divided faces of a divided seedling placing table and capable of avoiding mutual contact of divided seedling placing tables and changing over to housing posture. SOLUTION: A seedling transplanter is divided in the intermediate position in right and left directions and the rice transplanter is constituted so as to enable free change over to a housing posture for turning the lateral direction to the longitudinal direction of the traveling machine body by rotation of vertically directing posture of the divided devices around the shaft center and a working posture capable of carrying out seedling planting operation without carrying out division of the seedling transplanting apparatus. The rice transplanter is equipped with a driving means AC3 for driving and rotating the divided devices around vertically directing posture and a measuring means PS for measuring relative distance of divided faces of the divided seedling placing table constituting each of divided devices and a control means 87 for allowing changeover operation of the divided material to the housing posture by the driving means AC3 only when separation having a prescribed value or above is measured by the measuring means PS. Furthermore, the rice transplanter is preferably equipped with a forced separation means E for controlling separation operation mechanism until it is measured that relative distance of divided face is separated until a prescribed value or above.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention divides a seedling planting device at an intermediate position in the left-right direction, and pivots the divided product about an axial center in a vertical posture, so that the lateral direction of the divided planting device moves in the front-back direction of the traveling body. The present invention relates to an improvement of a rice transplanter configured to be freely switchable between a retracted posture in which the seedling planting device is turned in the direction and a work posture in which seedling planting work can be performed without dividing the seedling planting device.

[0002]

2. Description of the Related Art Conventionally, there is a rice transplanter constructed as described in Japanese Patent Application Laid-Open No. 7-231705. In this conventional example, a seedling planting apparatus is provided with two right and left central portions.
Divided into two divided parts, and connected to the rear end position of the link mechanism via the first arm and the second arm so as to be rotatable about the longitudinal axis. When switching the seedling planting apparatus to the working posture, the swinging postures of the first arm and the second arm are changed and the divided parts are rotated to separate the divided parts so as to avoid contact with each other. In this state, the respective postures are changed, and the divided parts can be freely switched to the storage posture in which the lateral direction is the posture along the longitudinal direction of the body.

[0003]

In this type of rice transplanter, 8
It is effective for storing a planting device or a planting device with a large widthwise dimension such as 10-row planting in a small size.
Since the seedling planting device for multi-row planting is large and heavy in this way, a strong operating force is required when the operator manually switches from the working posture to the retracted posture, which is a burden on the operator. Becomes Therefore, similarly to the conventional example, it is possible to easily configure to change the posture of the divided pieces by the driving force of the actuator, but if the separation operation of the seedling placing table in the divided state is not sufficiently performed, the divided pieces It is also possible that the parts of the split surface of the seedling mounting table in the split state in which the dimension in the left-right direction is the maximum are in contact with each other and the postures cannot be switched.

Further, in the structure of the conventional example, the divided parts can be separated by swinging the first arm and the second arm, but for the purpose of simplifying the structure, only the arm corresponding to the second arm is provided. , It is also conceivable to artificially separate the seedling mounting table during storage. However, if the seedling table is separated manually, it will be a burden on the operator and there is room for improvement. In addition, this kind of seedling planting device is equipped with a lock mechanism etc. that holds the seedling planting device in the working posture, and when the seedling planting device is switched to the storage posture, this locking mechanism etc. is automatically released. It is also desired to further reduce the burden on workers.

An object of the present invention is to rationally construct a rice transplanter capable of dividing a seedling planting device into a storage posture with a smooth operation by using a driving force, and to switch to this storage posture. The point is to construct a rice transplanter that can reduce the burden on the person.

[0006]

As described in the beginning, the first feature of the present invention (claim 1) is that the seedling planting device is divided at an intermediate position in the left-right direction, and the divided product is vertically oriented. Rotation around the axis of the can be switched between a retracted posture in which its lateral direction is directed in the front-back direction of the traveling machine body and a working posture in which seedling planting work can be performed without dividing the seedling planting device. In the constructed rice transplanter, a drive means for driving and rotating the divided object around the axis in the vertical orientation is provided, and the relative distance between the divided surfaces of the divided seedling table which constitutes each of the divided objects is measured. The measuring means is provided, and the control means for permitting the switching operation to the storage posture of the divided object by the driving means only when the separation of the predetermined value or more is measured by the measuring means is provided. It is as follows.

A second feature (claim 2) of the present invention is to provide a separating operation mechanism for enlarging the relative distance between the divided surfaces of the divided seedling placing table by a driving force, and for the divided seedling placing by the measuring means. It is provided with a forced separation means for controlling the separation operation mechanism until it is measured that the relative distance between the divided surfaces of the table is equal to or more than a predetermined value, and the operation thereof is as follows.

A third aspect of the present invention (Claim 3) is provided with a lock mechanism for connecting and holding the divided pieces in a working posture, and a release mechanism for releasing the lock of the lock mechanism by a driving force. In a state in which the measuring means has measured that the relative distance between the divided surfaces of the divided seedling placing table is separated by a predetermined value or more, the release mechanism is controlled prior to the turning operation of the divided object by the driving means. It is provided with a forced releasing means for carrying out the above, and its action is as follows.

[Operation] According to the first feature (claim 1), when the relative distance between the divided surfaces of the divided seedling placing table is less than or equal to a predetermined value when the seedling planting device is switched to the storage posture. ,
Based on the measurement result of the measuring means, the control means does not drive the driving means, and when the relative distance between the divided surfaces of the divided seedling placing table is a predetermined value or more, that is, the divided surfaces of the divided seedling placing table are The control means controls the drive means to rotate the divided parts of the seedling planting device around the axis of the vertical axis only when they are separated to the distance where they do not come into contact with each other, and the storage posture is maintained without the divided seedling placing bases contacting each other. It can be switched to.

According to the second feature (claim 2), the forced separating means controls the separating operation mechanism even when the distance between the divided surfaces of the divided seedling placing table is not separated to a predetermined value by the measuring means. As a result, the distance between the divided surfaces of the divided seedling placing table is increased, so that the operator does not have to manually perform the separating operation.

According to the third feature (claim 3), when the seedling planting device is switched to the storage posture, even if the distance between the divided surfaces of the divided seedling placing table is increased to a predetermined value, the driving is performed. By means of the means, the forced release means controls the lock release mechanism to release the locked state of the lock mechanism prior to the turning operation of the divided object, and the operator does not have to manually perform the release operation of the lock mechanism. Will be things.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a drive-type front wheel 1 and a drive-type rear wheel 2 that are steered.
An engine 4 is mounted on the front part of a traveling machine body 3 including a vehicle, and a hydrostatic stepless transmission 5 for transmitting power from the engine 4 and a mission case 6 are arranged on the rear part of the traveling machine body 3. Further, the driver's seat 7 is arranged at the center of the traveling machine body 3, and the hydraulic cylinder 8 is provided to the rear end portion of the traveling machine body 3.
And a seedling planting apparatus A is connected via a link mechanism 9 driven up and down to form a riding type 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 seedling planting device A and for turning the planting clutch C on and off, and a gear shift lever 11 is provided on the left side of the driver's seat 7. I have it. The planting clutch C is built in the mission case 6, and a transmission shaft 12 that transmits power from the mission case 6 to the seedling planting device A.
Is allowed to perform the cutting operation only when the rotation phase is in a predetermined rotation phase, and the planting arm (described later) of the seedling planting apparatus A is configured to cut off the power in a posture avoiding contact with the field.

The seedling planting apparatus A includes a seedling placing table 13 on which a mat-like seedling W is placed, a pair of left and right transmission cases 14 and 14 to which power from the transmission shaft 12 is transmitted, and a chain case 15 from the transmission case 14. The rotary case 16 that rotates by the power transmitted via the rotary case 16, the pair of planting arms 17 provided in the rotary case 16, and the center float 18C.
And a pair of side floats 18S and 18S, each of which is equipped with a ground leveling float 18 (see FIGS. 2 and 3) for eight-row planting, a fertilizer application device B, and a seedling table 13 for working. At the same time that the planting arms 17 cut out the seedlings one by one from the lower end of the mat-like seedling W placed on the field and plant them in the field scene, at the same time, the fertilizer application device B supplies fertilizer under the field scene near the planted seedling. It is configured.

As shown in FIGS. 2, 3, and 6, the link mechanism 9 includes a top link 9T and a pair of left and right lower links 9.
The rear end of each of L and 9L is connected by a vertical link 9V, and the seedling planting device A is detachably connected to the vertical link 9V via an intermediate frame 19 (the detachable structure will be described in detail. However, the seedling planting device A is rotatably connected to the rolling boss 20 at the lower end of the intermediate frame 19 around the rolling axis Y in the front-rear posture, and as shown in FIG. Against the electric motor 21
Is provided with a moving member 22 that reciprocates in the lateral direction by a screw shaft (not shown) in a horizontal posture that is rotationally driven by the column-shaped frames 23, 23 arranged at the left and right positions of the moving member 22 and the seedling placing table 13. And a pair of left and right engaging rods 25, 25 fixed to the upper end of the intermediate frame 19 with an extension member 24A interposing a pulling type rolling spring 24 connected to the inner end. A pulling type return spring 27 having an extension rod 27A connected to the inner end is interposed between brackets 26, 26 arranged at left and right positions on the side opposite to the seedling mounting surface of the seedling mounting table 13. Also, the right extension rod 27
An operation shaft 27B having a shape protruding upward is welded and fixed to A, and the extension rod 27A is engaged so that the extension rod 27A can be artificially removed from the engagement rod 25 by the operation of the operation shaft 27B.

In this rice transplanter, the seedling planting device A is configured so that it can be divided into two sections at a central position in the left-right direction. That is, as shown in FIGS.
A main frame 32 is composed of an upper plate 32A and a lower frame 32B, which are connected to a plate 31 that can be freely rolled with respect to 0. From the main frame 32, a pair of left and right regulating arms 33, 33 are extended forward. When the seedling planting device A is raised, the regulating arms 33, 33 are brought into contact with the lower surfaces of the left and right lower links 9L, 9L to regulate the rolling operation of the seedling planting device A. . A cylindrical member rotatably supported by the first shaft 34 is disposed at both ends of the main frame 32 such that the first shaft 34 is non-rotatably disposed coaxially with the first shaft X1 in the vertical position. 3
5, a cylindrical frame member 36 is fixed to the frame member 36. The pivot end of the frame member 36 is coaxial with the second axis X2 in the vertical position, and is rotatable with respect to the frame member 36. The second shaft 38 is arranged inside the cylinder shaft 37 (see FIG. 8).
), The left and right channel-shaped brackets 39 are rotatably supported around the second shaft 38, and a square pipe-shaped support frame 40 is connected to the brackets 39 so that the seedling planting device A The left and right divisions AL and AR are supported.

As shown in FIG. 8, when the seedling planting apparatus A is set in a working posture, the first axis X is set with reference to the vertical direction.
The upper ends of the first and second axial cores X2 are inclined in a direction toward the front side of the traveling machine body 3, and the columns are coaxial with the second axial core X2 and rotate integrally with the bracket 39. 6, the upper and lower ends of the left and right pillar-shaped frames 23, 23 are connected and fixed to the anti-seedling mounting surface side of the seedling mounting table 13 in a horizontally long posture, as shown in FIG. 41, 41 are connected to each other. FIG.
As shown in FIG. 1, the transmission case 14 is connected to the bracket 39, and the base end of the chain case 15 is connected to the support frame 40.
Sliding rails 42, 42 for movably supporting the seedling placing table 13 in the left-right direction are arranged on the upper surface of the table 5.

The power from the transmission shaft 12 is transmitted to the intermediate shaft 12A.
The bevel case 43, which is transmitted via a roller, is arranged at a position displaced to the right of the rolling axis Y.
As shown in (a) and (b), the bevel case 43 is provided with output shafts 44, 44 for branching and extracting power in the left-right direction, and the power from the output shafts 44, 44 is used to transmit the power from the left and right. The intermediate shafts 45, 45 to be transmitted to the cases 14, 14 are supported in a lateral orientation, and an interlocking clutch mechanism is provided between the intermediate shaft 45 and the output shaft 44. This clutch mechanism includes a shift member 46 slidably fitted to the output shaft 44, an engaging member 47 fixed to the end of the intermediate shaft 45, and a shift member 46 attached in the direction of the engaging member 47. And a spring 48 for urging the shift member 46.
The occlusal claw 46A formed on the occluder and the occlusal claw 47A formed on the occlusal member 47 occlude only in a specific rotation phase. or,
A link member 50 for simultaneously operating the shifters 46, 49 that are in contact with the respective shift members 46, 46 so that the left and right shift members 46, 46 are simultaneously operated inward to simultaneously disengage the left and right clutch mechanisms. Prepare and rod 5
An electric cylinder type first actuator AC1 for performing the on / off operation of the clutch mechanism via 2 and a limit switch type first sensor S1 for determining the state of the clutch mechanism from the operation amount of the on / off operation system. .

Further, as shown in FIG. 2, the moving force of a piece (not shown) engaged in the spiral groove of the screw shaft 53, which is rotationally driven by the power of the left transmission case 14, is applied to the left split seedling table. Thirteen
A lateral feeding mechanism for the seedling mounting table 13 is provided with a moving member 54 for transmitting the L to the side opposite to the seedling mounting surface. A protective frame 55 having a shape surrounding the outer end of the slide rail 42 is connected and fixed to the outer end of the support frame 40 so as to protect the outer end of the slide rail 42. The seedling placing table 13 is connected to the left and right split seedling placing tables 13L and 13R as described later, so that the sliding rails 42 and 42 are integrally moved in the lateral direction by the power from the lateral feed mechanism. Move back and forth.

As shown in FIGS. 10 and 11, round pipe-shaped engaging members 56, 56 are connected and fixed to the front positions of the left and right support frames 40, 40 in a horizontally long position, and the lower frame of the main frame 32 is connected. Locking members 58, 58 are connected and fixed in such a manner as to project rearward with respect to the left and right positions of a shaft body 57 which is swingably supported by 32B in a horizontal posture. A concave engagement portion 58A that engages with the engagement member 56 from below is formed on the upper surface side of the lock member 58, and the electric cylinder type is used to switch the lock member 58 between a locked posture and an unlocked posture. In addition to the second actuator AC2, a limit switch type second sensor S2 is provided so as to determine the state of the lock member 58 from the operation amount of the operation system. The lock member 58 corresponds to the lock mechanism of claim 3, and the second actuator AC2 corresponds to claim 3.
Corresponds to the release mechanism.

As shown in FIGS. 4, 5, 7, and 8, a main sprocket 65 is fixedly installed coaxially with the first shaft core X1 at the upper position of the first shaft 34, and the first shaft 34 is also fixed. Is provided with a plate-shaped rotating member 66 rotatably around the first axis X1 at the upper end position of the bracket, and the bracket 39 rotatably supported with respect to the second shaft 38, and a columnar frame. 23
And a driven sprocket 67 having a number of teeth that is ½ of the number of teeth of the main sprocket 65 is disposed coaxially with the second shaft core X2, and the main sprocket 65 and the driven sprocket 67 are further extended. The chain 68 is wound around.

The left and right rotating members 66, 66 are arranged at a higher level than the left and right frame members 36, 36, and are rotated in conjunction with the rotation of the frame members 36, 36.
One end of each of the rods 69, 69 in the suspended posture is
6, 66, and the other end is fixed to the frame members 36, 36.
It is connected and fixed by screw type. The left and right rotating members 6
A pair of wires 70, 70 are stretched in an intersecting posture between the wires 6 and 66 so as to rotate the wires 6 and 66 in opposite directions. Further, the electric cylinder type third actuators AC3 and AC3 are interposed between the rear end portion of the link mechanism 9 and the left and right rotating members 66, 66, and the rotating member 6 is also provided.
A limit switch type third sensor S for discriminating whether the seedling planting apparatus A is in the working posture or the storage posture from the posture of 6
3 is provided. The third actuator AC3 corresponds to the driving means in claim 1.

As shown in FIG. 6, when the seedling planting apparatus A is in the working posture, the first connecting mechanism R1 is provided at the upper position of the anti-seedling placing surface of the seedling placing table 13 in order to maintain this working posture. The second support frame 41 is formed at the connecting position of the support frames 41, 41.
The connection mechanism R2 is formed, and the third connection mechanism R3 is formed between the lower surfaces of the left and right sliding rails 42, 42.
A fourth connecting mechanism R4 is provided between the lower divided surfaces of 3,
As shown in FIG. 2, a connecting metal fitting 71 is detachably provided between the rear ends of the chain cases 15 and 15 at positions sandwiching the dividing surface via intermediate plates 72 and 73. When the seedling planting apparatus A is in the working position, one end of the connecting fitting 71 is engaged with the intermediate plate 72 that is fixedly connected to the rear end of the chain case 15 so as to extend rearward, and the other end is connected to the other. The intermediate plate 73, which is connected and fixed to the rear end of the chain case 15 in a posture of extending rearward, is configured to be connected in a pinched state by the pinching portion 71B at the other end by operating the lever 71A. Further, the first limit switch type for determining whether the connecting fitting 71 is in the connected state or the separated state.
The coupling sensor JS1 is provided on one of the intermediate plates 72 and 73. Further, as shown in FIG. 3, the connecting metal fitting 71 is used for maintaining the storage state even when the seedling planting apparatus A is set in the storage posture, and detects the use at this position. A two-joint sensor JS2 is also provided.

The first, second, third and fourth connecting mechanisms R
1, R2, R3, and R4 are electric cylinder type first, second, third, and fourth connection actuators RA1 and R provided respectively.
The limit switch type first, second, third, and fourth connection sensors RS1, RS2, R are configured so that the connection state and the separation state can be freely switched by the operation of A2, RA3, RA4.
The third connecting mechanism R3 is configured so that the state of the connecting mechanism can be determined by S3 and RS4, and the third connecting mechanism R3 will be described as an example of a typical structure of this connecting mechanism. This third connecting mechanism R3
As shown in FIG. 12, a lock pin 76 is provided so as to be able to move in and out laterally with respect to a support member 75 on the lower surface of one of the slide rails 42, and the other slide rail 42 has the lock pin 76 fitted therein. And a fitting member 77 having a fitting hole into which the lock pin 75 is fitted and which is supported on the lower surface and is mechanically linked to the third connecting actuator RA3.
With respect to the system linked to the operation system of the lock pin 76, the third
A connection sensor RS3 is provided.

As shown in FIGS. 13 and 14, position sensors PS, PS for detecting the position of the seedling placing table 13 by contacting the seedling placing table 13 are arranged at both end positions of the sliding rail 42. Further, a rack gear 81 is provided on the anti-seedling placement surface of the right seedling placing table 13, and a pinion gear 82 that meshes with the rack gear 81 and an electric motor 83 that rotationally drives the pinion gear 82 are provided on the sliding rail 42 side. Is supported by. The rack gear 81 and the pinion gear 82 are always in an engaged state, and the electric motor 8 is used during seedling planting work.
3, the pinion gear 82 can be freely rotated in the forward and reverse directions as the seedling placing table 13 moves to the left and right without supplying electric power.

Incidentally, the position sensors PS, PS are the seedling table 13
Is divided and the relative distance between the divided surfaces of the divided seedling placing bases 13L and 13R is measured, which corresponds to the measuring means described in claim 1, and the position of each of the position sensors PS, PS is divided seedling placing base 1
When 3L and 13R are detected, it can be determined that the relative distance between the divided surfaces is separated by a predetermined value or more. Further, the rack gear 81 and the pinion gear 82
And the electric motor 83 constitute the separation operation mechanism of the second aspect.

In this rice transplanter, as shown in FIG. 15, the sensors S1, S2, S3, RS1, RS2, RS3.
Signals from RS4, JS1, JS2, and PS are input, and the actuator systems AC1, AC2, AC
3, RA1, RA2, RA3, RA4, 83 are each provided with a control device 87 having a microprocessor (not shown) as a control means for outputting a control signal, and the control device 87 is switched to the storage posture. An input system for signals from the storage switch 88 for operating and the restoration switch 89 for restoring and operating the seedling planting apparatus A in the storage posture to the working posture is formed, and the storage lamp 90 and the storage lamp 90 which operate during the storage operation are restored. An output system is formed for the restoration lamp 91 which is activated during operation, and further, as shown in FIG. 1, from the upper limit sensor 92 that determines that the seedling planting apparatus A is in the state of being raised to the upper limit by the operation of the hydraulic cylinder 8. A system for inputting the signal is formed. The control device 87 corresponds to the control means of claim 1, and the control program set in the control device 87 constitutes the forced separation means E of claim 2 and the forced release means E of claim 3. ing.

When the seedling planting apparatus A is stored from such a structure, the hydraulic cylinder 9 is extended by operating the elevating lever 10 to raise the seedling planting apparatus A to the upper limit, and the connecting metal fitting 71 is attached. A removing operation is performed, and a preliminary operation of bringing the seedling placing table 13 closer to the end portion on the left side is performed by the driving force of the lateral feeding mechanism, as shown in FIG. Next, in this state, the storage start switch 88 is turned on to automatically store the data.

That is, as shown in the flow chart of FIG. 16, at the time of storage, it is first determined whether or not the above-described preliminary operation is being performed, step # 100, and then, only when this condition is satisfied, the storage switch 88 is operated. The storage lamp 90 blinks in synchronization with the ON operation, and the first and fourth connection sensors R
First until the connection is released by the signals from S1 and RS2,
The fourth connection actuators RA1 and RA4 are driven to release the connection between the first and fourth connection mechanisms R1 and R4 (# 20.
1- # 203 steps). In addition, in this way the seedling stand 13
Control program (# 203
Step) constitutes the forced release means F of claim 3.

After the connection is released in this way, the electric motor 83 is driven until the position sensor PS detects the divided seedling placing table 13R on the right side, and the seedling placing table 13 is separated.
After the separation is achieved in this way, the clutch mechanism of the bevel case 43 is disengaged, the lock member 58 is unlocked, the second connection mechanism R2 is released, and the third connection mechanism R is released.
The connection release operation of 3 is controlled so as to drive the corresponding actuators until the release is confirmed by the signal from the corresponding sensor system. In this way the split seedling platform 1
The state in which the 3L and 13R are separated and operated is as shown in FIG. 21, and the distance between the divided surfaces of the divided seedling placing tables 13L and 13R reaches about 30 cm. The program (# 204 step) for driving the electric motor 83 to separate the seedling placing table 13 constitutes the forced separating means E of claim 2 (# 204, # 205 steps).

After reaching the situation in which the seedling planting apparatus A can be switched to the storage posture in this way, the signal from the third sensor S3 is used until the seedling planting apparatus A is detected to reach the storage posture. 3 Actuator AC3 is driven to drive seedling planting device A
Is controlled to switch to the storage posture. Then, when the third actuator AC3 is driven, the frame members 36, 36 are interlocked by the force from the left and right rotating members 66, 66 and the pair of wires 70, 70. As a result, the first shaft cores X1, X1 are rotated. Rotate the frame member 3
6 and 36 swing toward the inside of the traveling body 3 on the rear end side, and at the same time, the bracket 39, around the second axis X2, X2.
The system supported by 39 rotates in the opposite direction at a speed twice as high as the rotation speed of the frame members 36, 36, that is, the left and right outer ends thereof move to the front side of the traveling machine body 3, and ,
At the time of rotation, as shown in FIG. 22, the left and right split seedling placing bases 13
Although the corners 13E and 13E of the upper inner ends of L and 13R are close to each other, since the divided seedling placing bases 13L and 13R are rotated at positions separated from each other in a plan view, the corners 13E and 13R are respectively moved.
It is possible to rotate while avoiding the contact of E, and when the rotation is completed, the storage posture is reached as shown in FIG.

When the seedling planting apparatus A reaches the storage posture in this way, the storage lamp 90 is turned off and the control operation ends (#
206, step # 207).

Incidentally, in step # 100 of the condition determination, as shown in the flowchart of FIG. 17, the seedling planting apparatus A is at the upper limit based on the signal from the upper limit sensor 92, and based on the signal from the first connection sensor JS1. The connection fitting 71 is in the separated state, the seedling planting apparatus A is in the work posture based on the signal from the third sensor S3, and the seedling placing table 13 is on the left end based on the signal from the left position sensor PS. The control operation is set so as to allow the transition to the next control only when it is located in the section (steps # 101 to # 104).

When the seedling planting device A in the retracted posture is restored to the working posture, the hydraulic cylinder 9 is extended by operating the elevating lever 10 to raise the seedling planting device A to the upper limit and The operation of removing the connecting fitting 71 is performed. Next, in this state, the restoration switch 88 is turned on to automatically restore.

That is, as shown in the flow chart of FIG. 18, at the time of restoration, it is first determined whether or not the above-described preliminary operation is performed, step # 300, and then the restoration switch 89 is operated only when this condition is satisfied. The restoration lamp 90 blinks in synchronism with the ON operation, and the third actuator AC3 is driven until the seedling planting device A reaches the work posture by the signal from the third sensor S3, and the seedling planting is performed. Control is performed to switch the device A to the restored posture (# 401 to # 40).
3 steps).

Next, a signal from a sensor system corresponding to the operation of engaging the clutch mechanism of the bevel case 43, the operation of locking the lock member 58, the operation of connecting the second connecting mechanism R2, and the operation of connecting the third connecting mechanism R3, respectively. The control is performed so as to drive the corresponding actuators until the connection is confirmed by, and the electric motor 83 is driven to achieve the joining operation of the seedling placing table 13, and the first and fourth connection sensors RS1 and RS2 are connected. Drive the first and fourth connection actuators RA1 and RA4 until the connection is completed by the signal
1, R4 are connected, and further, the restoration lamp 91 is turned off to end the control (# 404 to # 40).
7 steps).

Incidentally, in step # 300 of the condition determination, as shown in the flowchart of FIG. 19, the seedling planting device A is at the upper limit based on the signal from the upper limit sensor 92, and based on the signal from the first connection sensor JS1. The control operation is set to allow the transition to the next control only when the connecting fitting 71 is in the separated state and the seedling planting apparatus A is in the retracted posture based on the signal from the third sensor S3. (# 301
~ Step # 303).

As described above, according to the present invention, when the seedling planting apparatus A is switched from the working posture to the storing posture and when the storing posture is restored to the working posture, the switch is operated with almost no artificial operation. The posture is automatically switched by the driving force only by operating it, and if the posture is not suitable for the posture switching of the seedling planting device when the switch is operated, the posture is not changed, or the actuator Since the posture is switched after the state is switched to the proper state by the operation, the driving force of the actuator does not cause inconveniences such as bringing the divided objects into contact with each other or damaging the lock mechanism. On the other hand, there is almost no artificial work to do.

[Other Embodiments] In addition to the above embodiments, the present invention may have, for example, a single actuator for switching the posture of the seedling planting device, and independently rotate the divided parts of the left and right seedling planting devices. It is also possible to implement with a pair of actuators for movement. Further, according to the present invention, a member that can be switched between the connected state and the separated state by the operation of the actuator is provided at the portion where the connecting fitting is provided, so that no manual operation is performed when switching to the storage posture or the working posture. It is also possible to perform all the operations with an actuator, and to implement a lock operation that is relatively easy to operate so that it can be manually operated to reduce costs and simplify the structure. It is also possible.

It is also possible to apply the present invention to a rice transplanter having the structure described in the conventional example, in which the actuator is of hydraulic type, the sensor is of optical sensing type, the control device is a logic gate and a comparator. It is also possible to configure with only hardware such as.

[0041]

Therefore, the rice transplanter which can divide the seedling planting device and switch to the storage posture by the smooth operation by using the driving force has been rationally constructed (claim 1). Further, when switching to this storage posture, the distance between the divided seedling placing stands is increased without imposing a burden on the operator (claim 2), and the lock mechanism is unlocked without imposing a burden on the operator ( (Claim 3) A rice transplanter is constructed.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the 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 a transmission system of the seedling planting device in a stowed position;

FIG. 4 is a plan view of a work posture storing operation system.

FIG. 5 is a plan view of a storage operation system in a storage posture.

FIG. 6 is a front view showing a member linked to the intermediate frame.

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.

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

FIG. 10 is a plan view of an operating system of a lock member.

FIG. 11 is a side view of the lock member in the locked posture.

FIG. 12 is a rear view of the third connecting mechanism.

FIG. 13 is a front view of the separation operation system when the seedling placing table is connected.

FIG. 14 is a front view of the separation operation system in a state where the seedling table is separated.

FIG. 15 is a block circuit diagram of a control system.

FIG. 16 is a flowchart of a storage control routine.

FIG. 17 is a flowchart of a condition determination routine.

FIG. 18 is a flowchart of a restoration control routine.

FIG. 19 is a flowchart of a condition determination routine

FIG. 20 is a plan view of the rice transplanter with the seedling stand placed at the end of the sliding rail.

FIG. 21 is a plan view of the rice transplanter with the seedling mounting table divided.

FIG. 22 is a plan view of the rice transplanter with the seedling planting device divided and rotated.

FIG. 23 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

[Explanation of symbols]

 3 Traveling vehicle 13L, 13R Split seedling platform 58 Lock mechanism 87 Control means A Seedling plant AL, AR Split object AC2 Release mechanism AC3 Drive means E Forced separation means F Forced release means PS Measuring means

Claims (3)

[Claims] 1. A seedling planting device (A) is divided at an intermediate position in the left-right direction, and the divided products (AL), (AR) are rotated about an axis in a vertical posture to change the lateral direction thereof. A retracted posture in which the traveling body (3) is directed in the front-back direction, and the seedling planting device (A)
1. A rice transplanter configured to be switchable to a work posture in which seedling planting work can be performed without splitting, and the divided objects (AL) and (AR) are driven and rotated around the axis in the vertical posture. A driving means (AC3) for driving the measuring means (PS) for measuring the relative distance between the divided surfaces of the divided seedling placing stands (13L), (13R) constituting the divided objects (AL), (AR), respectively. And the dividing means (AL), (AR) by the driving means (AC3) only when the measuring means (PS) measures the separation of a predetermined value or more.
Rice transplanter equipped with a control means (87) for permitting the switching operation to the storage posture of the. 2. The divided seedling placing table (13L), (13)
(R) is provided with a separating operation mechanism for enlarging the relative distance between the divided surfaces by a driving force, and the relative distance between the divided surfaces of the divided seedling placing bases (13L) and (13R) is predetermined by the measuring means (PS). The rice transplanter according to claim 1, further comprising: a forced separation means (E) for controlling the separation operation mechanism until it is measured that the separation is performed up to the value of or more. 3. A lock mechanism (58) for connecting and holding the divided objects (AL), (AR) in a working posture, and a release mechanism (AC2) for unlocking the lock mechanism (58) by a driving force. ), And the driving means (in the state where the measuring means (PS) has measured that the relative distance between the divided surfaces of the divided seedling placing stands (13L), (13R) is equal to or more than a predetermined value. The rice transplanter according to claim 1, further comprising a forced release means (F) for controlling the release mechanism (AC2) prior to the turning operation of the divided parts (AL) and (AR) by AC3).