JPS642584Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has three soil leveling floats arranged horizontally with respect to the seedling planting device, and pivoted so as to be able to swing up and down using the rear end as a fulcrum. The rice planting device is equipped with a control mechanism for raising and lowering the seedling planting device with respect to the vehicle body so that the vertical position of the center one of the three floats relative to the seedling planting device is maintained within a set range. Regarding machines.

The above rice transplanter uses three floats to accurately level the field for planting.
The planting depth is maintained constant by automatically raising and lowering the seedling planting device while detecting the height of the seedling planting device relative to the mud by vertically swinging the center one of the floats. In a rice transplanter having such advantages, the present invention is designed to allow both of the three floats to be controlled accurately as desired through rational modification. The purpose is to reliably prevent the posture of adjacent already planted seedlings from being unintentionally disturbed by the pressure of muddy water at the side ends.

Embodiments of the present invention will be described in detail below based on the drawings.

As shown in FIGS. 1 and 2, it is equipped with a pair of left and right front wheels 1, 1 that can be driven and rotated and whose direction can be changed, and a pair of left and right rear wheels 2, 2 that can be driven and rotated,
Engine 3 and transmission case 4, driver's seat 5
an inclined seedling platform 6 that moves back and forth horizontally at a constant stroke with four pine-shaped seedlings W placed side by side in the rear of the passenger vehicle body, which is located in front of the vehicle and at the front end of the vehicle; A seedling planting device equipped with a planting claw 7 that takes out and plants one seedling from the lower end of each pine-shaped seedling W, and three floats 8 arranged side by side at appropriate intervals in the lateral direction. 9,
A hydraulic cylinder 11 for lifting and lowering the seedling planting device is provided in a state in which the lower lifting link 10b is operated to swing up and down with respect to the vehicle body. The structure is such that four seedlings are planted sequentially as the aircraft advances, and in order to maintain a constant planting depth, the seedling planting device 9 is placed on the ground when traveling on a headland or on a road. In order to avoid contact with the vehicle body, the seedling planting device 9 is configured to be able to be raised and lowered relative to the vehicle body.

Each of the floats 8 is connected to a drive case 12 of the seedling planting device 9 with its rear end pivotally supported around the horizontal axis X, and a link mechanism 13 that can bend and extend its front end. As shown in FIG. 3, a spring 14 that biases the center float 8a downward is attached to the link mechanism 13a corresponding to the center float 8a.
The hydraulic cylinder 11 is provided so as to act on the hydraulic cylinder 11.
A swing operating arm 16 of a control valve 15 for switching the operating state of the control valve 15 and the link mechanism 13a are interlocked and connected by a wire 17.

When the swinging position of the float 8a for the seedling planting device is within the appropriate setting range, the control valve 15 is brought into a lifting stop state that stops the operation of the hydraulic cylinder 11, and when the lifting position is out of the appropriate setting range. , when the control valve 15 is operated to extend the hydraulic cylinder 11 to raise the seedling planting device 9, and further falls out of the proper setting range, the control valve 15
is automatically switched to a state in which the hydraulic cylinder 11 is shortened and the seedling planting device 9 is lowered, and the swinging position of the float 8a relative to the seedling planting device is automatically maintained within the set range. The structure is such that the planting depth is stabilized in this way.

In short, the height of the seedling planting device 9 relative to the mud is detected based on the vertical movement of the float 8a, and the seedling planting device 9 is automatically raised and lowered to stabilize the planting depth. be.

Reference numeral 18 in the figure is a manual lift lever that locks and swings the control valve 15, which is biased by the float 8a during the downward operation, by the locking arm 19 during the upward operation. It is configured to be switchable between position U, lifting stop position N, lowering position D, and position A in which the control valve 15 is made freely operable and is automatically operated by the float 8a as described above.

When configuring the floats 8, 8 on both sides of the three floats 8, 8, 8a, in plan view, the lateral outer surfaces of the wide ground leveling width portions S, S at the front ends are aligned in the longitudinal direction of the aircraft. The floats 8, 8 at both lateral ends move muddy water to the side of the aircraft as the aircraft advances. It is configured to suppress outward pressing as much as possible.
In addition, the center float 8a is connected to the large width portion Sa for leveling the land at its front end to the floats 8, 8 at both lateral ends.
The float 8a is placed in front of the front end of the float 8a to prevent the muddy water pushed inside the fuselage by the floats 8, 8 at both side ends from moving to the front of the center float 8a. Furthermore, the lateral distance between the floats 8, 8 at both lateral ends and the center float 8a is set to be a large distance for muddy water flow.

In short, the floats 8, 8 at both lateral ends suppress muddy water from being pushed toward the lateral outside of the aircraft and disturb the posture of the adjacent already planted seedlings, and the floats 8a at the center
However, the floats 8, 8 at both lateral ends are used to prevent the lower cloud from being swayed by the muddy water that is pushed inside the aircraft, allowing for accurate elevation control. Floats 8, 8 at the ends are used to smoothly flow muddy water that is pushed toward the inside of the machine to the rear of the machine.

In addition, in carrying out the present invention, if the rear end of the center float 8a is positioned forward of the rear ends of the left and right floats 8, 8, as shown in the illustration, both lateral ends The muddy water that is pressed and flowed by the floats 8, 8 in the section can be quickly stopped and returned to a stable state.

In addition, in carrying out the present invention, the floats 8, 8 at both lateral ends may be configured to level the field for planting multiple rows, and the float 8a at the center may be used to level the field for planting.
It is also possible to level the field for planting in one row or three or more rows.

Further, in carrying out the present invention, the seedling planting device 9 may be mounted on the front part of the vehicle body or the lower abdomen of the vehicle body.

Furthermore, various types of seedling planting device 9 can be used, such as a device for planting pot-shaped seedlings grown individually one by one.

In summary, the present invention, in the rice transplanter mentioned above,
Of the three floats 8, the floats 8, 8 at both lateral ends are constructed by connecting the lateral outer surface of the large width portion S for leveling at the front end to a straight line along the front-rear direction of the aircraft in plan view. The float 8a at the center is formed into a shape with a sloping inner side surface located toward the inside of the fuselage toward the rear, and the large width portion Sa for leveling the ground at the front end of the float 8a is formed at the front end of the float 8a. It is characterized in that it is positioned forward of the front ends of the floats 8, 8.

In other words, the front ends of the three floats 8 at both lateral ends 8, 8 have large width portions S, S for leveling the ground.
When viewed from above, the lateral outer surface is formed into a straight line along the longitudinal direction of the fuselage, and the lateral inner surface is formed into an inclined shape that is positioned toward the inside of the fuselage toward the rear. float 8,8
However, as the aircraft moves forward, the muddy water is suppressed as much as possible from being pushed toward the outside of the aircraft, and instead is pushed toward the inside of the aircraft. Compared to forming the lateral outer surfaces of the large land leveling width portions S, S of the floats 8, 8 in an inclined shape that is located further outward from the fuselage toward the rear, the muddy water caused by the floats 8, 8 at both lateral ends is It is possible to prevent the postures of adjacent planted seedlings from being unintentionally disturbed by pressure as much as possible. Moreover, according to the present invention, the center float 8a and the large width part Sa for land leveling at the front end of the float 8a can be By providing it in a state in which it is positioned forward of the floats 8, 8 at both lateral ends,
Large width part for leveling the front end of the central float 8a
This is inconvenient when the Sa is located at the same position in the longitudinal direction with respect to the front end of the floats 8, 8 at both lateral ends, or at the rear of the floats 8, 8 at both lateral ends. The muddy water being pushed by the crocodile moves to the front part of the central float 8a, and the muddy water causes the central float 8a to unexpectedly swing up and down. As the lateral spacing becomes narrower, the muddy water that is being pushed inside the fuselage by the floats 8, 8 at both lateral ends cannot smoothly flow toward the rear of the fuselage, and as a result, the muddy water flows to the sides of the aircraft. It is possible to avoid the inconvenience of a large amount of fluid flowing outward, and to perform elevation control accurately as desired.
In this way, the muddy water can be appropriately pressed and flowed into the interior of the machine, and as a result, a rice transplanter that can be used more favorably as a whole has been obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, with Fig. 1 being a side view of the riding type rice transplanter, Fig. 2 being a partially cutaway schematic plan view of the machine, and Fig. 3 showing the relationship between the float and the control valve. This is a link diagram. 8, 8, 8a...Float, 9...Seedling planting device, S, S, Sa...Large width part for land leveling.

Claims (1)

[Scope of utility model registration request] The three soil leveling floats 8, 8, 8a are arranged horizontally with respect to the seedling planting device 9, and
The seedling planting device is mounted so that it can pivot up and down with its rear end as a fulcrum, and the center float 8a of the three floats 8 is maintained in a vertical position relative to the seedling planting device within a set range. A rice transplanter equipped with a control mechanism for raising and lowering the planting device 9 relative to the vehicle body,
Of the three floats 8, the floats 8, 8 at both lateral ends are constructed by connecting the lateral outer surface of the large width portion S for leveling at the front end to a straight line along the front-rear direction of the aircraft in plan view. The float 8a at the center is formed into a shape with a sloping inner side surface located toward the inside of the fuselage toward the rear, and the large width portion Sa for leveling the ground at the front end of the float 8a is formed at the front end of the float 8a. A rice transplanter characterized in that the rice transplanter is positioned forward of the front ends of the floats 8, 8.