JPH0353622Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention relates to a mechanism for adjusting the vertical harvesting amount of seedlings in a rice transplanter.

(b) Conventional technology Conventionally, in order to adjust the amount of vertical removal of seedlings that the planting claws provided in the planting mechanism of a rice transplanter scrape off from the seedling pine on the seedling platform, they were placed on the lower edge of the seedling platform. The vertical position of the seedling extraction board can be changed, and by operating the vertical adjustment lever, the vertical position of the board can be moved via an interlocking mechanism to adjust the depth of penetration of the planting claw into the seedling pine. It was configured to do so.

(c) Problems to be solved by the invention However, in a rice transplanter in which multiple planting mechanisms are installed in parallel, the operation of the adjustment lever provided in the interlocking mechanism is distributed and transmitted to each part of the seedling take-out plate. Due to the deflection of the rotating shaft, the vertical positions of the plates were not aligned, which resulted in a disadvantage that the amount of vertical seedlings taken by each planting mechanism was inconsistent.

(d) Means for solving the problem In this invention, a horizontal frame with a horizontal upper surface is mounted horizontally on the main frame for supporting the seedling stand, and a rotation shaft is attached to the upper surface of the horizontal frame via a clamp mechanism. The coaxial shaft and the adjustment mechanism for adjusting the vertical position of the seedling take-out plate placed on each part of the seedling take-out plate placed on the lower edge of the seedling stand are connected by rods. The present invention aims to provide a mechanism for adjusting the amount of seedlings taken vertically in a rice transplanter.

(E) Function In this design, the rotating shaft is supported almost entirely on the upper surface of the horizontal frame, so there is no bending of the same axis, and a rod is also interposed between the rotating shaft and the same plate. This allows the length of the rod to be adjusted while maintaining alignment of the vertical position of each part of the seedling take-out plate with respect to each planting claw.

(f) Effects According to this invention, by configuring the vertical seedling removal amount adjustment mechanism of the rice transplanter as described above, deflection of the rotating shaft is prevented and the relative position between the coaxial shaft and the seedling removal plate is adjusted. By accurately and evenly distributing and transmitting the operation of the adjustment lever to each part of the seedling take-out plate, it is possible to adjust the amount of vertical picking of seedlings with each planting claw while maintaining alignment. .

(G) Example The example of the present invention will be explained in detail based on the drawings.
A indicates a riding type rice transplanter, and the rice transplanter A consists of a traveling body B and a planting part C. The traveling body B has a prime mover section 2 mounted on the front part of a body frame 1;
The power is transmitted to the transmission mechanism 4 via the interlocking mechanism 3, and the power is transmitted to the rear wheels 6 disposed on the rear left and right sides of the fuselage frame 1 via the chain interlocking mechanism 5 disposed on the left and right sides of the transmission mechanism 4. At the same time, the front wheels 7 disposed on the lower left and right sides of the prime mover section 2 are steered via steering handles 9 disposed upright on the driving section 8,
The machine is configured to tow a planting section C connected to the rear of the traveling body B and perform seedling planting work while traveling in the field.

The planting section C has a parallel link 1 at the rear of the traveling body B.
Planting section frame 1 connected so as to be able to rise and fall via 0
1, a center float 12 for sliding on the planting surface of the field and supporting the planting section C from below, and left and right floats 13 on the diagonally rear left and right sides of the float 12, A seedling stand 14 is provided above the seedling stand 11 with a backward downward slope.
A predetermined amount of seedlings are collected and planted on the planting surface of the field by the downward movement of the tip 16-1 during planting rotation. It is vertically installed at the front end of a planting arm 18 connected to the rear end of the planting part frame 11, and the middle part of the arm 18 is connected to a planting crank 19.
9 is rotated by a drive mechanism built into the planting section frame 11, and the claw tips 16-1 are configured to perform planting rotation along a constant trajectory.

A seedling take-out plate 20 having a substantially L-shaped cross section is adjacent to the lower edge 14-1 of the seedling stand 14.
1, and the horizontal part 2 is placed on the same plate 20.
0-1 protrudes rearward from the lower edge 14-1 of the seedling platform, and prevents the seedling pine 15 on the top surface of the seedling platform 14 from sliding downward on the upper surface of the horizontal portion 20-1, so that the plate is horizontal. At a predetermined position of the portion 20-1, a substantially rectangular seedling outlet 21 is cut out from the edge 20-2 of the horizontal portion 20-1. From the lower edge of the newly planted seedling pine 15,
The tip of the planting claw 16-1, which passes through the seedling outlet during the downward movement of the planting rotation, collects a predetermined amount of seedlings, and plants the collected seedlings on the planting surface at the lowest position of the downward movement. The amount of vertical removal of seedlings by the tip of the planting claw 16-1 is determined by the depth and shallowness of the intervention of the tip of the planting claw 16-1 into the seedling removal opening, and in order to adjust the amount of vertical removal of the seedlings,
The upper edge 20-4 of the vertical portion 20-3 of the plate 20 constitutes a vertical seedling adjustment mechanism M.
By vertically moving the seedling take-out plate 20 in parallel, the depth of intervention of the planting claw tip 16-1 into the seedling take-out port is adjusted, and the number of seedlings per planting operation of the planting claw tip 16-1 is adjusted. It is configured to adjust the amount of vertical take-up.

That is, the base 21-1 of the slide guide body 21 is fixed to the side surface of the planting part frame 11, the pin 23 is inserted into the long hole 22 bored in the guide body 21, and the rear end of the pin 23 is inserted. A substantially inverted triangular guide plate 24 is provided in series, the guide plate slidably contacts the guide plate 21, and the seedling take-out plate 20 is connected to the pin 23 via the guide plate 24. A slide plate 25 is connected to the front end of the pin 23, and the slide plate 25 is connected to the guide plate 21 by a spring 26.
biased in the direction.

27 is a boss fixed to the slide plate 25;
The pin 23 penetrates the slide plate 25 from inside the boss 27, projects to the rear surface of the slide guide body 21, and is integrally connected to the guide plate 24.

The adjustment mechanism M is interlocked with an adjustment lever 28 for adjusting the amount of vertical seedling removal via an interlocking mechanism M-1.

The interlocking mechanism M-1 controls the operation of the adjustment lever 28 by an adjustment mechanism M disposed at each part of the seedling take-out plate 20.
The rotation shaft 29 to which the base end of the adjustment lever 28 is fixed is connected to the seedling stand 14.
It is placed on the upper surface 31-1 of a horizontal frame 31 having a substantially rectangular cross section that is suspended horizontally on a main frame 30 for support,
A horizontal frame 31 surrounds the upper part of the coaxial 29 and has both ends
The coaxial shaft 29 is rotatably supported by a substantially C-shaped clamp mechanism 32 fixed to the coaxial shaft 29, and each adjustment mechanism is disposed at the tip of a predetermined number of arms 33 protruding from the coaxial shaft 29, and at each part of the seedling extraction plate 20. M pins 23 are interlocked and connected via vertical rods 34, respectively.
By operating the adjustment lever 28, each part of the seedling removal plate 20 is moved simultaneously by the same amount of steps.

The horizontal frame 31 is horizontally suspended between the left and right main frames 30, 30', and includes a slide rail 30-1 for supporting the seedling stand 14 and a planting section frame installed on the upper ends of the left and right main frames 30, 30'. 11 constitute a substantially ladder-shaped support frame.

Further, the adjustment lever 28 is inserted through a guide hole 35-1 of the guide plate 35, and a tongue piece 28-1 attached to the side surface of the lever 28 is engaged with a large number of locking recesses provided in the guide plate 35. A biasing box 36 is provided between the base end of the lever 28 and the rotating shaft 29 in order to bias the operating lever 28 in the direction of the engagement recess. The lever 2 inserted inside the box 36
The proximal end 28-2 of the lever 28 is pivotally supported by a pivot pin 36-1 so as to be rotatable left and right, and the tip of the lever 28 is biased toward the engagement recess by a spring 36-2.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the main parts of the proposed structure, Fig. 2 is a front development view of the same, Fig. 3 is an enlarged front view of the slide plate, and Fig. 4 is a rice transplanter having the proposed structure. An overall side view, and FIG. 5 is a rear view of the horizontal frame. 11: Planting section frame, 14: Seedling stand, 20:
Seedling removal board, 21: Slide guide body, 23: Pin, 24: Guide plate, 28: Adjustment lever, 29:
Rotation axis, 30: Main frame, 31: Horizontal frame, 31-1: Upper surface, 32: Clamp mechanism, 3
4: Rod.

Claims (1)

[Scope of utility model registration request] A horizontal frame 31 with a horizontal upper surface is horizontally mounted on the main frame 30 for supporting the seedling stand 14, and a rotation shaft 29 is rotatably mounted on the upper surface 31-1 of the horizontal frame 31 via a clamp mechanism 32. and coaxial 29,
The seedlings of a rice transplanter are constructed by interlocking and connecting adjustment mechanisms M for adjusting the vertical position of the seedling take-out plate 20 disposed on the lower edge of the seedling platform 14 with rods 34, respectively. Vertical amount adjustment mechanism.