JPH0454737Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a structure for adjusting the back and forth movement of a seedling stand in a walk-behind rice transplanter.

(b) Conventional technology Conventionally, a lower crossbeam was installed horizontally behind the lower end of the seedling stand.
In a walk-behind rice transplanter in which a supporting board for a seedling receiving plate that supports the seedling pine placed on the seedling platform from below is installed on the lower crossbeam, and the seedling receiving plate is supported by the same base, the seedling A vertical adjustment shaft for vertically sliding the receiving plate is placed horizontally so as to be rotatable close to the support base, and an arm is provided protruding from the same axis toward the bottom surface of the support base to connect the tip of the arm and the seedling receiving plate. At the same time, a vertical harvesting amount adjustment lever is provided protruding from the same axis between the bottom surface of the seedling table and the lower crossbeam,
By operating the same lever and sliding the seedling platform up and down, the amount of seedlings picked up vertically by the planting claw was adjusted.

(c) Problems to be solved by the invention However, in the above-mentioned structure for adjusting the amount of seedlings picked vertically, the planting claws pick up the seedlings at a fixed angle with respect to the seedling stand, but the seedlings Due to changes in the thickness of the pine, the type of bed soil, and the rooting condition of the seedlings, it is not possible to reliably remove the seedlings using the planting claws, and this vertical seedling removal amount adjustment structure cannot cope with the above changes. There were flaws.

(d) Means for solving the problem In this invention, a lower crossbeam is installed horizontally behind the lower end of the seedling stand, a seedling receiving plate support base is attached to the lower crossbeam, and the seedlings are placed on the base. In a walk-behind rice transplanter that supports a seedling receiving plate support connected to a seedling receiving plate at the lower end of the platform, a back and forth moving member is interposed between the seedling receiving plate support base and the seedling receiving plate support. An object of the present invention is to provide a structure for adjusting the back-and-forth movement of a seedling platform in a walk-behind rice transplanter, characterized in that the seedling platform can be adjusted to move back and forth by sliding the seedling receiving plate support forward. It is.

(e) Function/Effect In this invention, the seedling receiving plate support supported by the base is pressed forward by the back-and-forth moving member of the seedling receiving plate support base attached to the lower crossbeam, and the support is moves the seedling stand back and forth.

Further, by moving the seedling platform in the front and rear directions within the locus of the planting claws, the amount of seedlings taken by the planting claws can be changed.

Furthermore, the planting claws can reliably take out the seedlings on the seedling mounting stand while changing the inclination angle with respect to the planting claws.

Therefore, by moving the seedling stand back and forth, it is possible to respond to changes in the thickness of the seedling pine, the type of bed soil, and the state of rooting, and further improve the accuracy of planting the seedlings. be able to.

Moreover, with this structure, the rails of the seedling platform can be held in parallel, and the seedling platform can be smoothly reciprocated from side to side.

(F) Embodiment The embodiment of the present invention will be explained in detail based on the drawings.
FIG. 1 is a side view showing a walking rice transplanter A, and FIG. 2 is a plan view thereof.

A prime mover section 2 is mounted on the front part of the fuselage 1, and a transmission section 3 is connected to the rear of the engine section 2. A shaft case 4 is provided rearwardly protruding from the transmission section. The base ends of the gate-shaped frames 5 are connected.

An inner planting gear case 6 is connected to the rear end of the shaft case 4, and the base end of a planting frame 7 is connected to the planting gear case 6, and the planting frame 7 is extended rearward and upward. Attach the handle 8 to the upper end, and attach the handle 8 to the middle part through the seedling stand support frame 9.
Seedling stand 1 with a low front and back height that can hold seedlings of each row.
0 is set consecutively.

The inner planting gear case 6 is provided with inner left and right planting claws 11 of two inner rows among the four rows of planting claws so as to be rotatable for planting.

Furthermore, the gate-shaped frame 5 whose base ends are connected to the left and right sides of the transmission part 3 also serves as a case for a power transmission shaft to the outer planting gear case 6 which is connected to the left and right rear ends of the frame 5. It is structured as follows.

That is, the left and right projecting cases 12, 1, which are the base ends of the gate-shaped frame 5, are located in front of the front ends of the left and right wheels 17, 17' on the left and right sides of the transmission part 3.
2' projecting in the left-right direction, and left and right longitudinal cases 13, 13 extending slightly downwardly from the outer ends of the cases 12, 12' to the rear to form a bent part. A substantially gate-shaped gate-shaped frame 5 is constructed, and outer planting gear cases 6 are connected to the left and right rear ends of the frame 5, respectively. 2 rows of outer left and right planting nails 1
1 is installed so that it can be freely rotated for planting.

Reference numerals 16 and 16' denote left and right swing cases whose base ends are connected to the left and right sides of the transmission part 3 and whose tips can swing vertically.
7' is pivotally supported.

In addition, 18, 18' are left and right side floats, 1
9 indicates a center float, and 20 indicates a preliminary seedling stand.

In the walk-behind rice transplanter A having such a configuration, the present invention, as shown in FIG. The left and right longitudinal beams 22 are installed between the left and right sides of the girder 21 and the handle 8 to constitute the seedling stand support frame 9, and the upper part of the seedling stand 10 is movable left and right in the middle of each longitudinal beam 22. Left and right rollers 23 are provided protrudingly for support.

In the center of the lower cross beam 21, a seedling receiving plate support base 24 is provided to protrude diagonally forward and downward from the lower cross beam 21,
The upper surface of each base 24 is formed flat, and each base 24
A seedling receiving plate support 25 is mounted on the upper surface of each of the seedlings so as to be slidable up and down.

Further, at the upper end of the seedling receiving plate support 25, a seedling receiving plate 2 is provided.
The board 26 is formed in a substantially L-shaped cross section and is placed close to the lower end of the seedling stand 10, and is further provided via a rail 27 provided at the upper end of the board 26. supports the seedling stand 10 so as to be able to move back and forth from side to side.
0 to support the seedling pine.

Furthermore, the seedling stand 10 having such a structure is provided with a back-and-forth movement adjustment device 28, and by moving the seedling stand 10 back and forth with respect to the trajectory a of the planting claws 11, the seedling mat It is possible to expand the adaptability to The detailed structure is as follows.

That is, an L-shaped adjustment plate 29 is attached to the side surface of the seedling receiving plate support base 24 attached to the lower crossbeam 21 so as to be slidable back and forth, and the upper surface 25a of the adjustment plate 29 A seedling receiving plate support 25 is mounted on.

This adjustment plate 29 has longitudinal elongated holes 30 on its side.
The seedling receiving plate support 25 is moved forward with respect to the seedling receiving plate support base 24 through the elongated hole 30.

In addition, 31 is a seedling receiving plate support base 24 and an adjustment plate 29.
It is a bolt that connects the

Further, a vertically elongated hole 32 is provided on the upper surface of the adjustment plate 29, and the seedling receiving plate support 25 can be vertically slid through the vertically elongated hole 32.

In the figure, 25-1 is an operating lever connected to the seedling receiving plate support 25, and 25-2 is a bolt provided on the lower surface of the seedling receiving plate support 25.
is slidably mounted in a vertically elongated hole 32 on the upper surface of the adjustment plate 29.

Furthermore, as another example of such a structure, the fifth
As shown in the figure, the upper surface 24 of the seedling receiving plate support base 24
An insertion hole 33a is provided from the upper surface to the lower surface of the seedling receiving plate support 25 placed on top a, and an adjustment bolt 33 is screwed into the insertion hole 33a. Plate support base 24
The seedling receiving plate support 25 can be moved back and forth by pressing the upper surface 24a.

In addition, 34 is the upper surface 24 of the seedling receiving plate support base 24.
A sliding protrusion 25a protrudes from the lower surface of the seedling receiving plate support 25 in the longitudinal hole 34.
is installed to enable vertical sliding of the seedling receiving plate support 25.

In addition, as another embodiment of the present invention, as shown in FIG. 6, one seedling removal amount adjustment lever 35 is provided,
In conjunction with the seedling platform 10, the seedling platform 10 can be configured to be slidable back and forth and up and down by a single seedling collection adjustment lever 35.The details of this structure are as follows. It is.

That is, at the tip of the seedling removal amount adjustment lever 35,
By connecting one end of the horizontally installed substantially L-shaped pivot 35a, the seedling collection amount adjustment lever 35 can be rotated left and right about the pivot 35a.

The other end of the pivot portion 35a holds the base end of a longitudinal operating rod 36 connected to the seedling receiving plate 26.
By operating the seedling removal amount adjusting lever 35, the seedling receiving plate 26 can be moved forward and backward via the forward and backward operating rod 36.

In addition, the tip 35-1 of the seedling removal amount adjustment lever 35
is formed on a pivot portion 35a so as to be vertically movable, and a vertically operating rod 37 extending upward is connected to a midway portion of the adjusting lever 35.

Further, the upper end of the vertical operating rod 37 is connected to the seedling stand 10.
The roller 23 supporting the upper rail 23a is interlocked with the lower end of the roller support rod 38, and the seedling platform 10 is slid up and down via the vertical operation rod 37 by vertical operation of the seedling removal amount adjustment lever 35. can be done.

Note that 39 is a support for the longitudinal operating rod 36, 40 is a pivot portion of the pivot portion 35a, 41 is a vertical roller supporting the rail 23a, and 42 is a support for the vertical operating rod 37.

With the seedling removal amount adjustment lever 35 having such a structure, the seedling platform 10 can be slid back and forth and up and down, and the seedling removal by the planting claws 11 can be finely adjusted.

In addition, as shown in FIGS. 7 to 9, the seedling receiving plate 2
The guide body 43 at the lower end of the seedling platform 10 is attached to the rail 27 provided at the upper end of the seedling platform 6 to move the seedling platform 10 back and forth from side to side. 43 from floating up.

That is, a substantially U-shaped seedling stand removal prevention fitting 44 is attached to the rail 27, and the upper surface 44a of the seedling stand removal prevention fitting 44 is positioned above the guide body 43, so that the guide body 43 does not come off from the rail 27. That's what I do.

Further, on the lower surface 27a of the rail 27, a protrusion 46 having a spherical shape or a spherical surface at the tip is protruded through the biasing force of a spring 45.
6 is fitted into a gourd-shaped groove 47 on the lower surface 44b of the seedling stand removal prevention metal fitting 44 to detachably attach the seedling stand removal prevention metal fitting 44.

Reference numeral 48 denotes a prevention fitting support member attached to the lower surface 27a of the rail 27, and the prevention support member 48 allows the seedling stand detachment prevention fitting 44 to be attached to the rail 27.

Furthermore, in FIGS. 10 and 11, an L-shaped roller support rod 38 is protruded from the front end of the left and right vertical rods 22 via an extension body 22a, and a roller support rod 38 is provided at the tip of the roller support rod 38. 23, and a rail 23a attached above the seedling platform 10 is attached to the roller 23 to smoothly reciprocate the seedling platform 10 from side to side.

Further, a base end 53a of an L-shaped rail fall-off prevention metal fitting 53 is rotatably attached to the roller support rod 38 by the bias of a spring 52, and a tip 53b of the rail fall-off prevention metal fitting 53 is rotatably attached to the roller support rod 38. The tip 5 of the metal fitting 53 is arranged above the rail 23.
3b prevents the rail 23a from falling off the rollers 23.

Moreover, the rail 23 can be removed by rotating the rail drop-off prevention metal fitting 53 around its base end 53a.

In addition, 54 is a fixed engagement body of the rail drop-off prevention metal fitting 53 provided on the roller support rod 38, and the engagement part 55 of the prevention metal fitting 53 is engaged with the fixed engagement part 54, and the rail is fixed with the spring 52. Falling prevention fitting 5
3 can be fixed.

[Brief explanation of drawings]

Fig. 1 is an overall side view of an embodiment of the present invention, Fig. 2 is an overall plan view of the embodiment, Fig. 3 is an enlarged side view of the main parts of the invention, Fig. 4 is a sectional view of Fig. 3, FIG. 5 is an enlarged side view showing another embodiment, FIG. 6 is an explanatory diagram showing another embodiment, and FIGS. 7, 8, and 9 are side views showing a structure for preventing the seedling receiving plate from falling off. , Fig. 10, 1st
Figure 1 is a side view showing the rail support structure of Naejodai. A...Walking rice transplanter, 10...Seedling stand, 21...
...Lower cross beam, 24... Seedling receiving plate support base, 25... Seedling receiving plate support, 26... Seedling receiving plate, 29... Back and forth moving member.

Claims (1)

[Claim for Utility Model Registration] A lower crossbeam 21 is installed horizontally behind the lower end of the seedling stand 10, a seedling receiving plate support base 24 is attached to the lower crossbeam 21, and a seedling support base 24 is attached to the base 24. Seedling receiving plate 2 at the lower end of 10
In the walk-behind rice transplanter A supporting the seedling receiving plate support 25 connected to the seedling receiving plate 6, a back and forth moving member 29 may be interposed between the seedling receiving plate support base 24 and the seedling receiving plate support 25, and the seedling receiving plate support Plate support 25
A structure for adjusting the back-and-forth movement of a seedling stand in a walk-behind rice transplanter, characterized in that the seedling stand 10 can be moved forward and backward by sliding forward.