JPH0441789Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is used in a rice transplanter that plants seedlings while moving them back and forth horizontally by joining the lower end of the seedling stand installed diagonally to the seedling take-out plate through which the planting claws are exposed. This invention relates to a presser device.

(Prior art) Conventional seedling holders placed near the seedling take-out plate of a seedling stand include those disclosed in Japanese Utility Model Application Publication No. 49118/1983 and Japanese Utility Model Application Publication No. 1983/1983.
As seen in Publication No. 56531, plate-shaped seedling holders and bar-shaped holders are known.

(Problem to be solved by the invention) The plate-shaped seedling holder used in walk-behind rice transplanters can protect the seedlings from the scattering of mud caused by the rotation of the planting arm.

However, if the plate-shaped seedling holder is fixed, the seedling holder cannot be moved, so long seedlings with strong stems will be planted backwards, and short seedlings with weak stems will be planted leaning forward.

A stick-shaped seedling holder used in a riding rice transplanter or the like can change the posture of the planted seedlings to some extent by changing the position of the stick.

However, since the scattering of mud by the planting arm cannot be captured, the scattered mud adheres to the pine seedlings, causing problems in their growth.

Since the seedling presser is located near the trajectory of the planting arm, the position of the seedling presser cannot be changed significantly, and seedlings with long and strong stems are planted at an angle.

Short seedlings tend to fall off the seedling holder, resulting in many broken seedlings.

(Means for solving the problem) Therefore, the technical problem of this proposal is to provide a rice transplanter in which the seedling holder does not interfere with the locus of the planting arm and break. The technical means of the present invention to solve the problem is to configure the seedling holder with a plate-like body made of an elastic material.

(Effect of the invention) According to this technical means, even if the seedling holder comes to a position where it interferes with the locus of the planting arm in order to select the optimal position as a seedling holder, the seedling holder is elastic and the planting arm When the planting arm passes, it runs away and does not get in the way. Furthermore, since the seedling presser can be positioned as close to the tip of the seedling pine as possible, the seedling can be held in a predetermined posture, allowing for proper planting. In addition, the plate-shaped seedling holder prevents mud from scattering onto pine seedlings.

(Example) Hereinafter, an example shown in the drawings will be described. 1
is a seedling stand; 2 is a rib of the seedling stand; a support plate 4 and a support plate 5 are erected on a base plate 3 fixed on the rib 2; is mounted on a shaft,
A plate-shaped seedling presser 7 made of an elastic material such as soft resin or rubber is attached to the rotating shaft 6.

The base of an arm 8 is fixed to the end of the rotation shaft 6, and a pin 9 is set at the tip so as to protrude freely.

A spring 1 is installed between the base 11 of the pin 9 and the arm 8.
2 is interposed so that the pin 9 can be retracted.

Reference numeral 10 denotes an engaging collar at the tip of the pin 9, which is adapted to engage with lock holes A, B, and C of the support plate 5, with A and B being the lower lock holes and C being the upper lock hole.

Therefore, when the pin 9 is pushed in against the force of the spring 12, the engaging collar 10 comes out of the lock hole, and the arm 8
can be rotated freely. When you come to the lock hole A, B, or C position,
When the pin 9 is released, the pin 9 is retracted by the spring 12, and the engaging collar 10 engages with any one of the lock holes A, B, or C, and the seedling presser 7 is fixed in an arbitrary position.

Reference numeral 13 denotes a stopper plate separately attached to the support plate 5 to prevent the rotating shaft 6 from jumping out. In addition, 3' and 4' in FIG. 4 indicate the base plate and support column in the central rib.

5 is a modified embodiment of FIGS. 1 to 4, and shows one having a large number of lock holes. The higher the number, the more finely the adjustment can be made.

Figures 6, 7, and 8 show conventional seedling holders.
In FIG. 6, the rotation shaft 6 of the seedling presser 7 is attached to the arm 8, which is fixed by loosening the nut 15 and sliding it through the slit groove 14 in the support plate 5.

16 in the figure is a seedling stopper.

According to the devices shown in Figures 6 to 8, in order to adjust the position of the seedling holder, the nut 15 is loosened, the position is adjusted, and the nut is tightened again, so a tool for loosening and tightening the nut 15 is required. It is not possible to immediately respond to changes in seedlings or changes in plant height. This prevents normal planting and reduces work efficiency.

Furthermore, since fastening parts such as nuts are removed, the removed parts are often dropped and lost when making adjustments in the field.

As a result, the nut cannot be positioned,
The plants could come off and disrupt the planting function. Furthermore, the dropped parts were dangerous as they could injure the feet of people walking later in the field.

1 to 5, the structure is such that the seedling holding plate 7 can be rotated around a point on the seedling platform 1 near the rotation locus of the planting arm, so bolts, nuts, etc. can be fastened. No parts required.

Since no tools are required, the seedling presser can be adjusted instantly in response to changes in seedlings or plant height, allowing for consistently good planting without the hassle and time loss of conventional methods.

Furthermore, since there are no parts to be removed when adjusting the seedling holder, there is no functional damage due to loss of parts. Furthermore, it is safe for people to walk in the field because no parts fall into the field.

Further, in the case of the ones shown in FIGS. 6 to 8, the adjustment range of the seedling presser is narrow, that is, the rotation angle is small. The stepless adjustment range is θ in FIG.

Therefore, in the case of long seedlings or seedlings that are resistant to seedling stems, the riding-on rice transplanter has the problem that the planting posture changes, such as when planting tilted forward, and the adaptability to the seedlings is narrow.

One of the reasons for the narrow adjustment range is that the seedling holder must be located near the trajectory of the planting arm, and if you try to increase the adjustment range, the seedling holder and the planting arm will interfere, causing the seedling holder and the planting arm to overlap. may be damaged.

For normal seedlings, it is necessary to make subtle adjustments to optimize the planting posture, but for seedlings as shown in Figure 7, where the slit groove 14 has a special shape and can be adjusted steplessly, it is difficult to determine the optimal position. Requires skill,
It was not something that a first-time user could master right away.

However, in the embodiment, the normal seedling presser positions A and B and the position C, which is a position in which the seedling presser is rotated by 180 degrees, can be selected, so that it is possible to cope with long seedlings and seedlings with strong stems.

When rotated 180°, the position where the seedling stem hits is the rotation axis position. The position of the seedling holder after rotation avoids the trajectory of the planting arm, so there is no damage due to interference.
Since the adjustment at the bottom of the seedling presser is stepped at A and B, the optimum position can be easily selected, unlike stepless adjustment which requires skill.

In the embodiments shown in FIGS. 1 to 3, the adjusting and fixing position can be switched between positions A and B where the lower part of the seedling stem is pressed and position C where the upper part is pressed.

In any case, in the present invention, since the seedling holder is constructed of a plate-like body made of an elastic material, the above-mentioned effects can be achieved.

[Brief explanation of the drawing]

Figures 1, 2, 3, and 4 are perspective views, side views, top views, and front views of the device of the present invention, Figure 5 is a side view of the device of the present invention according to different embodiments, and Figures 6, 7, and 8 are of the conventional device. They are a side view, a partial view, and a partially cutaway plan view of the seedling holding device. 1... Seedling stand, 2... Rib, 3... Base plate, 4...
...Strut, 5...Support plate, 6...Rotation shaft, 7...Seedling holding plate, 8...Arm, 9...Pin, A, B, C
...Lock hole.

Claims (1)

[Scope of utility model registration request] Seedling holder placed near the seedling take-out plate of the seedling stand.
A seedling holding device for a rice transplanter, characterized in that it is composed of a plate-like body made of an elastic body.