JPH0427289Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support structure for a seedling stand in a rice transplanter.

The seedling stand of a rice transplanter usually has a pair of rails fixed to the back of the seedling stand in the front and rear directions in the direction of seedling delivery, while a sliding piece is installed inside each of the rails on the machine frame side, and these rails and The seedling stand is supported on the machine body via a sliding piece so as to be able to reciprocate left and right.

The sliding piece on the front rail side serves as a reference for the lateral movement of the seedling platform, so it is fixed to the machine body without play, and its top and rear surfaces serve as sliding support surfaces for the rail. On the other hand, the sliding piece on the rear rail side slides and supports the rail only on the top surface, and by providing a slight gap between the rear and bottom surfaces and the inner surface of the rail facing these surfaces, the sliding resistance is minimized. It is configured to ensure smooth lateral movement of the seedling platform by reducing the number of seedlings.

However, although such conventional seedling stand support structures can reduce the sliding resistance against the rails, they have had problems in terms of vibration, noise, and the like. In other words, due to the gap between the rear rail and the sliding piece, the seedling stand, which is made of a wide thin iron plate, is subject to considerable vibration and noise during operation due to the sliding movement of the aircraft due to engine drive. (abnormal noise), which not only offends the workers, but also
There were drawbacks that reduced the commercial value of the product.

The present invention has been developed to solve the above-mentioned problems, and in particular, on the outer surface of the sliding piece installed in the rear rail, on the opposite side of the rail sliding support surface, there is a tongue-like shape made of an elastic material. The structure is extremely simple because the tongue-like part is integrally provided to protrude toward the rail open part side, and the tongue-like part is brought into elastic contact with the inner surface of the rail facing the opposite side of the rail sliding support surface. However, without compromising the smooth lateral movement performance of the seedling platform, the vibration and noise of the seedling platform due to engine drive etc. can be effectively absorbed by the tongue-shaped part, allowing comfortable work with less noise. To provide a support structure for a seedling stand in a rice transplanter, which can secure the safety and increase the commercial value, and in which the tongue-shaped part can also serve as a scraper for mud etc. adhering to the inside of the rail.

To explain the structure of the present invention with reference to one embodiment shown in the drawings, Fig. 1 is an overall side view of a planting machine A, which has a parallel link mechanism behind a running section (not shown). B, the machine frame 1, which also serves as a drive case, the planting rod 2, the float 3, and the machine body are tilted forward in the direction of movement of the machine. It also consists of a seedling stand 4, etc., which is installed so that it can freely reciprocate from side to side, and from the pine seedlings (not shown) placed on the seedling stand 4, it moves up and down while drawing a fixed movement trajectory a. The planting rod 2 scrapes the seedlings one by one and plants them continuously on the rice field.

Reference numeral 5 denotes a front side rail fixed across the entire width in the width direction on the rear surface of the front end in the seedling feeding direction of the seedling platform 4, and the front side rail 5 is approximately L-shaped when viewed from the side, as shown in FIG. The front end thereof is slidably abutted on an apron 6 for adjusting seedling scraping. Reference numeral 7 denotes a block-shaped synthetic resin sliding piece installed inside the front side rail 5. A plurality of sliding pieces 7 are fixed along the front side rail 5 to the mounting seat 8 fixedly installed on the body frame 1. The front side rail 5 is slidably supported on the upper and rear surfaces thereof. Reference numeral 9 denotes a rear side rail fixed to the rear surface of the seedling platform 4 on the rear side in the direction of seedling delivery in parallel with the front side rail 5, and the rear side rail 9 has an open front side when viewed from the side as shown in FIG. It is bent into a roughly U-shape.

10 is an L-shaped support rod 11 for the rear side rail 9.
A plurality of sliding pieces 10 are internally supported via stays 12, and the sliding pieces 10 are also made of synthetic resin on the front side rail like the interior sliding pieces 7. Each sliding piece 10 has an upper surface 10a,
The lower surface 10b and the rear surface 10c are surrounded by the U-shaped rear rail 9, and the rear surface 1 of the sliding piece is
0c and the opposing rail inner surface 9a with a slight gap between them, and each of these sliding pieces 1
The upper surface 10a of the seedling stand 4 is adapted to share and support the load of the seedling stand 4 while slidingly contacting the rear side rail 9. In addition, the L-shaped support rod 11 can be adjusted up and down, forward and backward, and left and right with respect to the stay 12, and the sliding piece 1
0 mounting position can be adjusted.

By the way, on the lower surface 10b of each sliding piece 10, that is, on the opposite side of the rail sliding support surface, a tongue-shaped portion 10' made of an elastic material is located at the open portion b of the rear side rail 9 which is U-shaped.
This tongue-shaped portion 1 is integrally provided to protrude toward the side.
0' is elastically brought into light contact with the inner surface of the rail (the inner surface of the lower bent piece 9') facing the opposite side of the rail sliding support surface. On the other hand, notches 10'a are provided on both left and right sides of the tongue 10' as shown in FIG. Care has been taken to ensure that the sliding movement on the side rail 9 is always performed smoothly, and when assembling, the tongue-shaped portion 10'
As shown in FIG.
1, each sliding piece 10 can be reliably set at the proper mounting position without shifting back and forth or twisting, and therefore the tip edge of the tongue 10' is aligned with the assembly reference. It has also come to serve as a line.

According to the support structure of the seedling stand configured as described above, during the planting work, the seedling stand 4 is moved by the front and rear rails 5, 9 and each sliding slide installed inside these rails 5, 9. It smoothly reciprocates left and right while being accurately guided by the pieces 7 and 10. When the seedling table 4 reciprocates from side to side, the top and rear surfaces of the sliding piece 7 on the front side rail 5 contact the rail 5 immediately, and the seedling table 4 and the sliding piece 7 are placed on it. The sliding piece 10 on the rear rail 9 side shares the load of the pine seedlings and provides a stable sliding guide function.
Mainly, only one side of the upper surface 10a supports the load of the seedling stand 4, etc., and there is a slight gap between the rear surface 10c and the bottom surface 10b, so the rear side rail 9 has play by the amount of the gap. Coupled with the mounting structure in which the sliding piece 10 is supported via a long stay 12, it is easy to cause vertical vibration or sideways contact due to vibrations of the machine body, etc., and this causes vibration of the seedling platform 4 and This is a cause of noise generation, but in the present invention, the tongue-shaped portion 10' provided integrally with the sliding piece 10 is always elastically in contact with the inner surface of the lower bent piece 9' of the rear side rail 9. This tongue-shaped portion 1
When an external force due to vibration or impact of the aircraft body is applied to 0', the tongue-shaped part 10' quickly elastically deforms and acts to absorb the vibrations and noise, thereby effectively preventing the generation of noise, etc. I can do it. Also,
Since the tongue portion 10' only lightly contacts the rear side rail 9, there is no risk of interfering with the smooth lateral movement of the seedling platform 4 due to the elastic deformation effect of the tongue portion 10' itself. , the rear side rail 9 will not be damaged.

In addition, since the rear rail 9 has a U-shape with an open part b at the front, scattered mud and the like can enter the rail 9 and adhere to the inner surface of the lower bent piece 9' during planting work. In the past, there was a problem in that smooth sliding movement was impaired by this adhered mud, but since the tongue-shaped portion 10' of the present invention is in elastic contact with the inner surface of the lower bent piece 9'. , can act as a scraper for this adhered mud, and together with the provision of corner-shaped notches 10'a on both the left and right sides of the tongue-like part 10', the adhered mud can be removed by the tongue-like part 10'. Each time the platform 4 moves back and forth from side to side, it is guided out of the rail 9 and removed.

Further, since the tongue-shaped portion 10' is integrally provided on the sliding piece 10 in a state facing toward the rail opening part b side, when assembling the sliding piece 10, the sliding piece 10 is attached to the rear side rail 9.
It is sufficient to simply press fit from the open portion b side of the rail 9, and together with the elastic deformation effect of the tongue portion 10', the fitting operation of the rail 9 and the sliding piece 10 can be performed extremely easily and reliably.

Since the sliding piece 10 is made of synthetic resin, the tongue portion 10' can be integrally molded in advance using a mold, and the cost will not be particularly increased.

As described above, in the present invention, the rear rail of a pair of rails fixed on the back of the seedling stand in the front and rear directions in the seedling feeding direction is formed into a substantially U-shape with the front side open. In a device in which a pair of rails are each equipped with an internal sliding piece, and a seedling stand is supported on the body so as to be able to reciprocate from side to side via the rails and sliding pieces, the sliding piece installed inside the rear rail. On the outer surface of the piece, a tongue-shaped portion made of an elastic body is integrally provided on the side opposite to the rail sliding support surface toward the rail opening side, and the tongue-shaped portion is provided on the opposite side of the rail sliding support surface. Because it is in elastic contact with the inner surface of the rail facing the side, the tongue-like part integrally protruding from the sliding piece instantly deforms elastically in response to machine body vibrations, etc., and acts to absorb vibrations and noise. Therefore, although the structure is extremely simple and can be manufactured at low cost, the generation of vibration and noise in the seedling platform can be effectively prevented without impairing the smooth lateral movement of the seedling platform, resulting in less noise. It not only ensures comfortable work but also increases the product value, and the tongue-like part can act as a scraper to remove mud etc. adhering to the rail, further improving the sliding performance of the seedling stand. During assembly, the sliding piece can be fitted into the rail by simply press-fitting the sliding piece from the open side of the rail, making the fitting of the rail and sliding piece extremely simple and reliable. This has the effect of further improving the workability of assembly.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view of a planting machine equipped with the present invention, Figure 2 is a partially cutaway vertical side view of the main parts,
Fig. 3 is a front view showing the support structure of the sliding piece installed inside the rear side rail, and Fig. 4 shows the structure of the sliding piece installed inside the rear side rail. is a side view. In the figure, 4 is a seedling stand, 5 is a front side rail, 7 is a sliding piece, 9 is a rear side rail, 10 is a sliding piece, 10'
b is the tongue-shaped part, and b is the open part of the rear rail.

Claims (1)

[Scope of utility model registration request] Of a pair of rails fixed on the back of the seedling stand in the front and back in the seedling delivery direction, the rear rail is formed into a substantially U-shape with the front side open, and a rail is installed inside each of the pair of rails on the machine frame side. In a device in which a movable piece is attached and the seedling stand is supported so as to be able to reciprocate from side to side of the machine via the rail and sliding piece, the rail sliding piece is A tongue-like part made of an elastic body is integrally provided on the opposite side of the rail sliding support surface to protrude toward the rail opening side, and the tongue-like part is provided with an elastic member on the inner surface of the rail opposite to the opposite side of the rail sliding support surface. A support structure for a seedling stand in a rice transplanter, characterized in that the seedling stand is brought into contact with the rice transplanter.