JPH0837838A - Sulky type rice transplanter - Google Patents

Abstract

PURPOSE:To carry out rolling operation of a seedling transplanting device by an actuator in the excellent balance of right and left and to make the reaction force of the rolling operation act uniformly right and left when the rolling operation of the seedling transplanting device is effected by the actuator in a sulky type rice transplanter. CONSTITUTION:A seedling transplanting device is connected to the circumference of a longitudinal shaft center P2 at the rear part of a link mechanism 11. An output part 12a of an actuator 12 attached to a part approximately right above the longitudinal shaft center P2 is coupled with stationary parts at the right and the left sides of the seedling transplanting device with a pair of a right and a left springs 13 to be arranged approximately parallel with a second guide rail 9 for a seedling placing stand 10. The seedling transplanting device is subjected to rolling operation around the longitudinal shaft center P2 through the springs 13 by displacing operation in the right and left operations by the output part 12a, right and left springs are installed in an elastic deformation state at the tensile side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device comprising a transmission frame provided with a planting arm and a support frame extending left and right from a central planting mission case. The present invention relates to a riding-type rice transplanter that is connected to the front and rear axis of the vehicle so as to be freely rotatable.

[0002]

2. Description of the Related Art In a riding type rice transplanter, a seedling planting device is connected in a rolling manner as described above, but in recent years, for example, as disclosed in Japanese Utility Model Publication No. 62-7811,
A structure has been proposed in which the inclination of the seedling planting device with respect to the rice field is detected, and a hydraulic actuator is used to force the rolling operation so that the seedling planting device is parallel to the rice field. In this disclosed structure, the sensor provided in the quadruple link mechanism detects the inclination of the quadruple link mechanism with respect to the paddy field, and the inclination of the seedling planting device with respect to the quadruple link mechanism detects the seedling planting. It is configured to detect the tilt of the attached device with respect to the rice field.

[0003]

As described above, in the multi-row planting type rice transplanter, the support frame is extended to the left and right from the central planting mission case, and the transmission case is connected to the support frame to form the framework. A seedling planting device is constructed by attaching a seedling stand and a float to the supporting frame and the transmission case, and the central planting mission case is connected to the quadruple link mechanism in a freely rolling manner. Therefore, since the left and right parts of the planted mission case are easily bent up and down due to their own weight, there are four connecting points between the planted mission case and the four-link mechanism as in the disclosed structure. Even if the tilt of the seedling planting device with respect to the link mechanism is detected, it cannot be said that the tilt of the whole seedling planting device is detected, and it can be said that rolling control is performed based on accurate tilt detection. There was no state. Here, the present invention has been made in view of the above situation, and an object thereof is to configure so that even a wide seedling planting device can perform accurate rolling control.

[0004]

A feature of the present invention is that, in the riding type rice transplanter as described above, independent vertically movable grounding sensors are attached to the left and right of the seedling planting device, and are interlocked with the left and right grounding sensors. A pair of connected crankshafts are supported rotatably along the support frame by a support frame or a support bracket of a transmission case, and the vertical movement of the ground sensor is detected by the tilt detection mechanism in the center of the seedling planting device. There is a hydraulic actuator that cooperates with the seedling planting device and forcibly rolls the seedling planting device so that the seedling planting device is parallel to the rice field based on the detection result from the tilt detection mechanism. In addition to the configuration of the preceding paragraph, a control valve for supplying / discharging hydraulic oil to / from the hydraulic actuator is attached to the seedling planting device side, and the tilt detection mechanism and the control valve are installed in the machine. There that are interlockingly connected to its action and effects are as follows.

[0005]

[Operation] As described in the preceding paragraph, the grounding sensor for detecting the vertical movement on the left and right of the seedling planting device, and the crankshaft for transmitting the vertical movement of the grounding sensor are attached to the transmission case or the support frame, etc. Therefore, even if the left and right parts are vertically displaced, the ground contact sensor and the inclination detection system such as the crankshaft are also displaced, so that the inclination when the seedling planting device is displaced is directly detected. Also, by mounting the control valve for the hydraulic actuator on the seedling planting device side as in the preceding paragraph, even if the seedling planting device is displaced as described above, the position of the control valve is also displaced, so that the inclination detection mechanism and The distance from the control valve does not change, and even if the inclination detection mechanism and the control valve are mechanically linked, accurate rolling control can be performed without being affected by the bending phenomenon of the seedling planting device.

[0006]

As described above, the inclination of the seedling planting device with respect to the paddy field can be accurately detected regardless of the bending phenomenon of the seedling planting device even with a wide seedling planting device. Accurate rolling control of the planting device is now possible.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A riding type rice transplanter which is an embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, FIG. 6 and FIG. 7, the transmission case 3 is connected to the support frame 2 extending left and right from the planted mission case 1 at the center,
Each of the left and right transmission cases 3 and the transmission case 3 extending from the planted transmission case 1 has two 2 around the horizontal axis P1.
A total of 6 sets of planting cases 4 are rotatably supported by each set, and two sets of planting arms 5 are supported at both ends of the planting case 4.

One lateral feed shaft 6 is penetrated through the planted mission case 1, and support members 7 are connected to both ends of the lateral feed shaft 6, and a lower first guide rail 8 and an upper part are provided. The lower part of the rear surface of the seedling stand 10 slidably supported in the left-right direction by the second guide rail 9 and the support member 7 are connected to each other, and the transverse feed shaft 6 is driven to reciprocate transverse feed in the axial direction. Thus, the seedling stand 10 can be slid left and right.

The seedling planting device configured as described above is connected to the front and rear axis P2 at the lower rear end of the four-link mechanism 11 extending from the machine body (not shown) so as to be freely rollable. A return type hydraulic cylinder as a hydraulic actuator 12 is fixed to the upper rear end of the four-link mechanism 11, and a piston rod 12a protruding left and right from the hydraulic cylinder 12 and a second guide rail 9 are springs for accommodation. They are connected via 13, and the rolling operation of the whole seedling planting device around the front-rear axis P2 can be performed by the expansion / contraction operation of the hydraulic cylinder 12. Further, a pair of springs 14 are provided so as to extend from the upper rear end of the four-link mechanism 11 to the left and right support members 7, and both springs are placed when the seedling stand 10 is at the left-right center position of the seedling planting device. Both springs 14 are assembled so that 14 is longer than its natural length, that is, elastically deformed on the tension side.

Next, the structure for detecting the lateral inclination of the seedling planting device with respect to the rice field will be described in detail. As shown in FIGS. 1, 3 and 7, the structure extends to the rear of the support shaft 15 on the lower surface of the transmission case 3. Ground floats as ground sensors 16a and 16b are vertically swingably attached around the horizontal axis P6 at the end of the first arm 15a. On the contrary,
A support bracket 17 extends forward from a plurality of positions of the support frame 2 and the transmission case 3, and a pair of crankshafts 18 and 19 are rotatably supported around an axis P4 of the support bracket 17.

Then, first crank arms 18a, 19a are provided on the inner sides of the support brackets 17 on both outer ends of the crankshafts 18, 19, and the first crank arms 18a, 19a and the ground floats 16a, 16 are provided.
b is connected, and its structure will be described in detail as shown in FIG.
The rod 21 erected on the ground floats 16a and 16b is inserted from below into the boss member 20 rotatably supported around the horizontal axis P5 of the shaft 9a and the washer 22 and the boss fixed to the rod 21. Spring 23 between member 20
Is attached. Then, in a normal state as shown in FIG. 2, the distance from the washer 22 to the boss member 20, that is, the length A of the spring 23 is compressed to be shorter than the natural length of the spring 23. The stopper 30 is attached to the upper end.

On the other hand, on the opposite sides of the crankshafts 18 and 19, as shown in FIGS. 1, 3, 4 and 5, the second crank arms 18b and 19b are different in extending direction by 180 °.
Is attached, and both second crank arms 18
An arm 24 having a long hole 24a is provided over b and 19b. The stay 25 extends above the support bracket 17, the control valve 26 for supplying and discharging hydraulic oil to and from the hydraulic cylinder 12 is supported by the stay 25, and a spool (not shown) in the control valve 26 is provided. And arm 24
Is connected to the central portion of the through a adjust rod 27 which is adjustable in expansion and contraction.

Further, a center float 28 provided at the lower center of the seedling planting device is for raising and lowering control, and the first arm 1
It is attached so as to be vertically swingable around a horizontal axis P6 at the rear end of 5a. Then, the vertical movement of the center float 28 is detected, and the quadruple link mechanism 11 controls the elevation of the entire seedling planting device to keep it at a constant height above the rice field. Then, in order to adjust how high the seedling planting device should be maintained from the rice field, the support shaft 15 is rotated around its horizontal axis P3 to move the center float 28 and the ground floats 16a, 1a.
6b by changing the position with respect to the seedling planting device.

Then, as shown in FIGS. 1, 3, and 7, a rod 29 is provided so as to extend over the second arm 15b provided on the support shaft 15 and the third crank arms 18c, 19c of both crankshafts 18, 19. Has been done. As a result, the support shaft 15 is pivotally operated as described above and the ground floats 16a, 1
When the rear side of 6b and the center float 28 is operated to move up and down, both crankshafts 18 and 19 are also rotated in conjunction with this, and the front sides of the ground floats 16a and 16b are also operated to move up and down. Ground float 16 regardless of
A and 16b are kept substantially parallel to the rice field. Further, even if such an operation is performed, both crankshafts 18 and 19 only rotate in the same direction as shown in FIG. 5, which will be described later, and this does not affect the inclination detection of the seedling planting device.

Next, the movement of the arm 24 when the seedling planting device is tilted left and right with respect to the rice field will be described in detail. As shown in FIGS. 3 and 4, when the seedling planting device tilts to the left in the traveling direction and the ground contact float 16a on the left side swings upward,
This movement causes the spring 23 and the first crank arm 18 to move.
It is transmitted to the crankshaft 18 via a, and the arm 24 is rotated downward by the second crank arm 18b around the connection point with the other second crank arm 19b. When the arm 24 operates in this manner, the center of the arm 24 is displaced below the axis P4 which is the rotation axis of the crankshafts 18, 19, and this displacement is detected as the inclination of the seedling planting device and the control valve 26 Be transmitted to. As a result, the hydraulic fluid is supplied to and discharged from the control valve 26 to the hydraulic cylinder 12, and the rolling operation is performed so that the seedling planting device is parallel to the rice field. Then, even if the control valve 26 reaches the stroke end due to the downward displacement of the center of the arm 24 in the state shown in FIG. It is.

When the entire seedling planting device is displaced downward and the left and right ground floats 16a, 16b are displaced upward, both crankshafts 18, 19 rotate in the same direction as shown in FIG. The second crank arm 18b, 1
Since the protruding direction of 9b is directed in the opposite direction, the arm 24 rotates around the axis P4, and the center of the arm 24 is not displaced from the axis P4.

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

[Brief description of drawings]

[Figure 1] Plan view of the seedling planting device

FIG. 2 is a side view showing a connection structure between a ground float and a crankshaft.

FIG. 3 is an overall perspective view showing a tilt detection system of a seedling planting device.

FIG. 4 is a side view of the vicinity of the arm and the control valve in a state where the seedling planting device is tilted leftward in the traveling direction.

FIG. 5 is a side view of the vicinity of the arm and the control valve when the whole seedling planting device is sunk downward.

[Figure 6] Front view of the seedling planting device

FIG. 7 is a side view of the seedling planting apparatus.

[Explanation of symbols]

 1 mission case with plant 2 support frame 3 transmission case 5 arm with plant 11 four-link mechanism 12 hydraulic actuators 16a, 16b grounding sensor 17 support bracket 18, 19 crankshaft 26 control valve P2 front-rear axle core of four-link mechanism

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 23, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of Invention] Riding rice transplanter

[Claims]

Detailed Description of the Invention

[0001]

The present invention relates to a riding type rice transplanter,
The present invention relates to a structure of a rolling operation of a seedling plant by an actuator.

[0002]

2. Description of the Related Art In a riding type rice transplanter, as disclosed in, for example, Japanese Patent Laid-Open No. 61-149007, a seedling planting device is connected to the rear end of a link mechanism so that it can be rolled freely. There is a device in which the seedling planting device is configured to forcibly perform a rolling operation by an actuator so as to follow the paddy field based on the detection result of the tilt detection mechanism provided in the device. In this case, the actuator is directly connected to the fixed portion of the link mechanism and the fixed portion of the seedling planting device.

[0003]

In the above-mentioned configuration, since the actuator is directly connected to the fixed portion of the link mechanism and the fixed portion of the seedling planting device, for example, the seedling planting is performed while the actuator is stopped. When a part of the seedling planting device hits a ridge or the like and the seedling planting device shakes left and right, the shake of the seedling planting device is directly transmitted to the actuator. Therefore, if such a state is repeated, the durability of the actuator mounting portion and the actuator itself may be reduced, and there is room for improvement. It is an object of the present invention to improve the durability of the rolling operation of a seedling planting device in a riding type rice transplanter.

A feature of the present invention resides in the following configuration of the riding type rice transplanter described above. The seedling planting device is connected to the rear part of the link mechanism extended from the machine body around the front and rear axis so that the seedling planting device can be rolled freely, and the seedling stand of the seedling planting device is arranged in the left and right direction below the seedling planting device. The first guide rail and the second guide rail arranged in the left-right direction above the seedling planting device support the seedling planting device so as to be reciprocally slidably driven in the left-right direction, and the front-rear axis core in the rear part of the link mechanism. An actuator is provided almost directly above the actuator, and the output part of the actuator and the fixed part on the right side of the seedling planting device are connected by a spring that is arranged substantially parallel to the second guide rail. The fixed part on the left side of the planting device is connected by a spring arranged substantially parallel to the second guide rail, and the actuator is based on the detection result from the tilt detection mechanism that detects the left and right tilt of the planting device. The output portion via the lateral direction displacement operation and the spring includes an operation means for rolling operation in the longitudinal axis around along the seedling planting apparatus in the paddy.

[0004]

[I] With the configuration according to the present invention, based on the detection result from the tilt detection mechanism, the output part of the actuator is displaced left and right, and the seedling planting device is moved back and forth along the paddy field through the spring. Rolling operation is performed around the axis. Further, in the present invention, since the output part of the actuator and the right and left fixed parts of the seedling planting device are connected via the spring, for example, a part of the seedling planting device in a state where the actuator is stopped. Even if the seedling planting device hits a ridge or the like and swings to the left or right, the swinging of the seedling planting device is absorbed by the above-mentioned spring and is difficult to be transmitted to the actuator side.

[II] In a seedling planting device for a riding type rice transplanter, for example, as shown in FIGS. 6 and 7, a seedling stand 10 is arranged below the seedling planting device in a first guide rail in the left-right direction. Many of them are configured so as to be reciprocally slidably driven by the second guide rails 9 arranged in the left and right direction above the seedling planting device 8. Therefore, for example, as shown in FIG. 6, the output unit 12a of the actuator 12 is
By arranging the springs 13 that connect the right and left fixed parts of the seedling planting device substantially parallel to the second guide rails 9, the displacement direction of the output part 12a of the actuator 12 and the pulling direction of the springs 13 are Will almost match.

As a result, when the output portion 12a of the actuator 12 is displaced leftward and rightward, this lateral operating force is transmitted to the spring 13 without waste, and the seedling planting device is rolled. On the contrary, as described in the above item [I], when the seedling planting device swings to the left and right while the actuator 12 is stopped, this swing is transmitted to the actuator 12 without being sufficiently absorbed by the spring 13. However, the operating force due to this shake is not transmitted obliquely to the output part 12a of the actuator 12, and the above-mentioned shake is caused along the displacement direction of the output part 12 having the most resistance as the actuator 12. The operating force due to is transmitted.

[III] The second guide rail on the upper part of the seedling stand is relatively long, and the spring connecting the output part of the actuator and the seedling planting device is also relatively long. Therefore, when the spring is arranged substantially parallel to the second guide rail on the upper part of the seedling stand as in the present invention, the spring can be easily arranged close to the second guide rail. As described above, when the second guide rail and the spring, which are relatively long items, are arranged substantially parallel to each other, the second guide rail and the spring can be arranged in a relatively small space.

[0008]

As described above, in the riding-type rice transplanter in which the seedling planting device is connected in a rolling manner, the output part of the actuator and the fixed part of the seedling planting device are connected via the spring, so that the seedling planting device It is possible to prevent the runout of the planting device from being transmitted to the output part of the actuator, and prevent the durability of the actuator mounting part and the actuator itself from deteriorating. You can do it well.

In this case, the operating force of the displacement operation of the output portion of the actuator is transmitted to the spring without waste, and conversely, the vibration of the seedling planting device is transmitted along the displacement direction of the output portion, which has the most resistance, so that a small actuator is used. However, the rolling operation of the seedling planting device was performed properly, and it became possible to counter the swing of the seedling planting device, and it was possible to reduce the structure of the rolling operation of the seedling planting device and reduce the production cost. . Since the second guide rail of the seedling stand and the spring can be arranged in a relatively small space, the rolling operation structure of the seedling planting apparatus can be further downsized and the production cost can be reduced. I was able to.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A riding type rice transplanter according to an embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1, 6 and 7, the transmission case 3 is connected to the support frame 2 extending left and right from the central transmission case 1 and extends from the left and right transmission cases 3 and the transmission mission case 1. A total of 6 sets of 2 sets each around the horizontal axis P1 of the transmission case 3 to be taken out.
A pair of planting cases 4 are rotatably supported, and two sets of planting arms 5 are supported at both ends of the planting case 4.

A single lateral feed shaft 6 is penetratingly arranged in the planted mission case 1, and support members 7 are connected to both ends of the lateral feed shaft 6 to form a lower first guide rail 8 and an upper second guide rail. The lower rear part of the seedling stand 10 slidably supported in the left-right direction is connected to the supporting member 7 by 9, and the lateral feed shaft 6 is driven to reciprocate laterally in the axial direction to drive the seedling stand. 10 is driven to reciprocate left and right.

The seedling planting device configured as described above is connected to be rotatable around the front and rear axis P2 at the lower rear end of the link mechanism 11 extended from the machine body (not shown),
A return-acting hydraulic cylinder 12 (corresponding to an actuator) is fixed to a portion of the upper end of the rear end of the link mechanism 11 just above the front-rear axis P2. Piston rod 12a protruding left and right from the hydraulic cylinder 12 (corresponding to the output section)
And a right side portion and a left side portion (corresponding to a fixed portion) of the second guide rail 9 are connected via a spring 13 for accommodation arranged substantially parallel to the second guide rail 9, and the hydraulic cylinder 12 By displacing the piston rod 12a in the left-right direction, the entire seedling planting device is rolled around the front-rear axis P2 via the spring 13.

The rear end of the link mechanism 11 and the left and right support members 7
A pair of springs 14 are laid across and, when the seedling stand 10 is located at the left-right center position of the seedling planting device,
Both springs 14 should be longer than their natural length, that is, should be elastically deformed toward the tension side.
4 is assembled.

Next, the structure for detecting the lateral inclination of the seedling planting device will be described. As shown in FIGS. 1, 3, and 7, a ground float 16 is provided around the horizontal axis P6 of the first arm 15a extending rearward from the support shaft 15 on the lower surface of the transmission case 3.
a and 16b are attached so as to be vertically swingable. A support bracket 17 extends forward from a plurality of portions of the support frame 2 and the transmission case 3, and a pair of crankshafts 18 and 19 are supported rotatably around an axis P <b> 4 of the support bracket 17.

First crank arms 18a and 19a are provided inside the support bracket 17 on both outer ends of the crankshafts 18 and 19, and the first crank arms 18a and 19a and the ground floats 16a and 16b are illustrated. They are connected as shown in 2. First crank arm 18
A rod 21 erected on the grounding floats 16a and 16b is inserted from below into a boss member 20 rotatably supported around the horizontal axis P5 of the a and 19a, and a washer 22 and a boss fixed to the rod 21. A spring 23 is attached between the member 20 and the member 20. In the normal state as shown in FIG. 2, the upper end of the rod 21 is adjusted so that the distance from the washer 22 to the boss member 20, that is, the length A of the spring 23 is shorter than the natural length of the spring 23. A stopper 30 is attached to the.

As shown in FIGS. 1, 3, 4, and 5, second crank arms 18b and 19b, which extend in different directions by 180 °, are attached to the opposite sides of the crankshafts 18 and 19, respectively.
An elongated hole 24 extends over both second crank arms 18b and 19b.
An arm 24 provided with a is provided. A stay 25 extends above the support bracket 17, and a control valve 26 for supplying and discharging hydraulic oil to and from the hydraulic cylinder 12 is connected to the stay 25.
, And a spool (not shown) in the control valve 26 and a central portion of the arm 24 are connected via an adjusting rod 27 that is adjustable in expansion and contraction.

The center float 28 provided in the lower center part of the seedling planting device is for raising and lowering control, and includes the first arm 15
It is mounted so as to be able to swing up and down around the horizontal axis P6 at the rear end of a. As a result, the vertical movement of the center float 28 is detected, and the link mechanism 11 controls the raising and lowering of the entire seedling planting device to keep it at a constant height above the rice field. To adjust how high the seedling planting device should be maintained from the rice field, the support shaft 15 is rotated around its horizontal axis P3 to set the center float 28 and the ground floats 16a, 16b. By changing the position with respect to.

As shown in FIGS. 1, 3 and 7, the second arm 15b provided on the support shaft 15 and both crankshafts 18 and 19 are provided.
And a third crank arm 18c, 19c. As a result, when the support shaft 15 is rotated and the rear sides of the ground floats 16a and 16b and the center float 28 are vertically moved as described above, the crankshafts 18 and 19 are also rotated in conjunction with this operation. And
Similarly, the front side of the ground floats 16a, 16b is similarly moved up and down, so that the ground floats 16a, 1b can be operated regardless of the above operation.
6b is kept substantially parallel to the rice field.
Even if such an operation is performed, both crankshafts 18 and 19 only rotate in the same direction as shown in FIG. 5, which will be described later, and this does not affect the detection of the inclination of the seedling planting device.

Next, the movement of the arm 24 when the seedling planting device is tilted left and right will be described. As shown in FIG. 3 and FIG. 4, when the seedling planting apparatus tilts to the left in the traveling direction and the left ground contact float 16a swings upward, this movement is performed via the spring 23 and the first crank arm 18a. Transmitted to the crankshaft 18, the arm 24 is rotated downward by the second crank arm 18b around the connection point with the other second crank arm 19b. When the arm 24 operates in this manner, the center of the arm 24 is
It is displaced downward from the axis P4, which is the axis of rotation of 8 and 19, and this displacement is detected as the inclination of the seedling planting device and transmitted to the control valve 26. Thereby, the supply / discharge operation of the hydraulic oil from the control valve 26 to the hydraulic cylinder 12 is performed, and the rolling operation of the seedling planting device is performed so that the seedling planting device follows the rice field. In the state shown in FIG. 4, even if the control valve 26 reaches the stroke end due to the downward displacement of the center of the arm 24, when the grounding float 16a attempts to be displaced upward, this movement is absorbed by the spring 23.

When the whole seedling planting device is displaced downward and the left and right ground floats 16a and 16b are displaced upward,
As shown in FIG. 5, the two crankshafts 18, 19 rotate in the same direction, but the second crank arms 18b, 19b
Since the protruding direction of the arm is in the opposite direction, the arm 24
Will rotate about the axis P4, and the center of the arm 24 will not be displaced from the axis P4.

[0021] 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 drawings]

[Figure 1] Plan view of the seedling planting device

FIG. 2 is a side view showing a connection structure between a ground float and a crankshaft.

FIG. 3 is an overall perspective view showing a tilt detection system of a seedling planting device.

FIG. 4 is a side view of the vicinity of the arm and the control valve in a state where the seedling planting device is inclined leftward in the traveling direction.

FIG. 5 is a side view of the vicinity of the arm and the control valve in a state where the entire seedling plant is sunk downward.

[Figure 6] Front view of the seedling planting device

FIG. 7 is a side view of the seedling planting apparatus.

[Explanation of Codes] 8 First guide rail 9 Second guide rail 10 Seedling stand 11 Link mechanism 12 Actuator 12a Actuator output section 13 Spring P2 Front-rear axis

Claims (1)

[Claims] 1. A link mechanism (11) extended from the airframe.
A seedling planting device (10) of the seedling planting device is connected to a rear part of a front and rear axis center (P2) so as to be freely rotatable.
A first part arranged in the left-right direction at the bottom of the seedling planting device
The guide rail (8) and a second guide rail (9) arranged in the left-right direction on the upper part of the seedling planting device support the seedling planting device so as to be reciprocally slidably driven in the left-right direction, and the link. An actuator (12) is provided in a rear portion of the mechanism (11) substantially directly above the front and rear axis (P2), and an output portion (12a) of the actuator (12).
And a fixed part on the right side of the seedling planting device, which is arranged substantially parallel to the second guide rail (9).
3), the output part (12a) and the left fixed part of the seedling planting device are connected by a spring (13) arranged substantially parallel to the second guide rail (9), The output section (12) by the actuator (12)
By the displacement operation in the left-right direction of a), the spring (1
3) through the seedling planting device to the front and rear axis (P2)
A riding-type rice transplanter configured to be rolled around.