JPS6327549Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a frame structure of a planting section in a rice transplanter.

The support frame that supports the seedling stand on which the pine seedlings are placed and the apron that holds the front edge of the pine seedling soil attached allows the seedling stand to slide freely in the left and right directions with respect to the direction of movement of the machine, and also in the front and back. In order to adjust the amount of seedlings to be scraped, it is necessary to configure the apron so that it can slide along the path of the implant, and the more multiple rows of seedlings are planted, the longer the apron becomes in the left and right directions. In order to ensure smooth sliding movement, the sliding surface of the support frame must be flat, and it is an absolute condition that the heads of fastening bolts etc. do not protrude from the upper surface of the support frame.

However, this type of conventional support frame is usually a long bent plate with a cross-sectional shape, or a support frame is attached to the surface of a round pipe, etc. at a part higher than the head of a fastening bolt, etc. as shown in Publication No. 55-3. In most cases, a separate mounting seat is fixed by welding or other methods, and the top surface of the mounting seat is configured as the sliding surface of a seedling stand, etc., which not only increases the number of parts but also makes assembly difficult. There is an unavoidable drawback that distortion occurs during the processing process, especially welding distortion due to high heat. This drawback becomes more noticeable as multiple rows are planted, and as a result, it impairs the smoothness of reciprocating movement, causes unevenness in the amount of seedling scraping, and significantly impairs planting accuracy. Moreover, not only does it take a lot of time to correct the above distortion, but in order to make it easier to correct the distortion, the rigidity of the support frame has to be sacrificed to some extent, and the frame function of the planting part cannot be fully maintained. It could not be said that they were achieving their goals.

The present invention has been developed to solve the above-mentioned drawbacks, and includes supporting a seedling platform so as to be able to move back and forth from side to side on the planting section frames that are arranged in parallel in the longitudinal direction of the machine. In a rice transplanter in which an apron for adjustment is provided so as to be movable forward and backward in the direction of feeding out seedlings with respect to the locus of the implant, the apron is located at the lower end of the seedling platform in the direction of feeding out the seedlings, and is attached to the plurality of planting section frames. By horizontally connecting the rectangular cylinders and configuring the side of the rectangular cylinders facing the seedling stand as the sliding support part of the apron, it is possible to use a long frame as a sliding support frame for the seedling stand and the apron. However, the lightweight and highly rigid rectangular cylinder can be easily attached to the planting frame by direct bolting, etc., and the support frame structure has extremely high precision, minimizing welding distortion during assembly. This allows the seedling platform to move back and forth smoothly and reliably from side to side, keeping the amount of seedlings scraped uniformly at all times and greatly increasing the accuracy of planting. It can also serve as a reinforcement for the frame, significantly increasing the overall strength of the planting section frame, and this, together with eliminating the need for the above-mentioned extra mounting members, reduces the weight of the entire planting section as much as possible in terms of design. It is an object of the present invention to provide a frame structure of a planting section in a rice transplanter that can improve the ability of the planting section to follow the rice field surface and reduce power consumption.

To explain the structure of the present invention with reference to one embodiment shown in the drawings, Fig. 1 shows the overall structure of a planting section A, and this planting section A is towed by a traveling machine not shown. The implants 1, 1... which slide on the rice field surface and move up and down while drawing a certain movement trajectory a, are placed on a seedling platform 2 that moves back and forth from side to side. This works by scraping the seedlings one by one and planting them continuously on the rice field.

Reference numeral 3 designates a planting section frame, which, as shown in FIG. A central transmission case 4 each containing a vertical feed drive mechanism for pushing out pine seedlings at the moving end, a pipe frame 5 containing an intermediate shaft connected to the central transmission case 4, and a central transmission case 4 that extends horizontally to the direction of movement of the machine. It is based on an integral connection structure of a plurality of implant drive cases 6 arranged at intervals and whose base ends are connected to the pipe frame 5. A float device 7 is provided below the seedling stand 2.

The structure of the planting part frame 3 is as described above.
It may be of the configuration shown in Publication No.-3.

Reference numeral 8 denotes a long rectangular cylinder, and this rectangular cylinder 8 is located below the tip side of the seedling platform 2 in the direction of feeding out the seedlings, near the upper end of the movement trajectory a of the implant 1, and is connected to the pipe frame. 5 is fixed to the planting section frame 3 via tightening bolts 9. In the illustrated example, a rectangular cylinder 8 with a rectangular cross section having wide sides 8a, 8'a and narrow sides 8b, 8'b is used, and the wide side 8a is parallel to the bottom of the seedling stand 2. It is shown. 10 is an insertion hole 11 for the tightening bolt 9
This hole 10 has a diameter larger than the head 9' of the tightening bolt 9, and after the rectangular tube body 8 is attached, the hole 10 has a diameter larger than the head 9' of the tightening bolt 9.
The head 9' is located in the hollow part of the rectangular cylinder 8, and the wide side 8
It has a structure that does not protrude above a (fourth
(see Figure 5). Reference numeral 12 denotes a slide piece of the seedling stand 2. This slide piece 12 is fixed via a through bolt 13 and a nut 14 while placed on the wide side 8a of the rectangular cylinder 8. The seedling platform 2 is adapted to move left and right while sliding. Reference numeral 15 denotes a reinforcing pin for the rectangular cylindrical body 8. One end of this reinforcing pin 15 penetrates and fixes to one wide side 8'a, and the other end contacts the lower surface of the other wide side 8a, thereby reinforcing the rectangular cylindrical body. It plays the role of 8 aggregates. Reference numeral 16 denotes an apron that holds the front edge of the pine seedbed soil and regulates the amount of seedling scraping, and the base end sliding portion 16' of the apron 16 slides forward and backward in the direction of seedling delivery on the upper surface of the wide side 8a of the square cylinder 8. It is movably supported in contact. Note that the slide piece 12 may be fixed to the base end sliding portion 16' of the apron 16. Reference numeral 17 denotes a forward/backward adjusting device for the apron 16, and this adjusting device 17
A bracket 17a having a cross-sectional shape that is integrally fixed to b and has the same height as the upper surface of the wide side 8a.
and a piece 17'' inserted through the elongated hole 17' of the bracket 17a and the proximal sliding portion 16' of the apron 16, a disc spring 17b, a tightening nut 17b, and the piece 17''.
It is configured in a screw type with a screw rod 17c with a knob 17e screwed into the screw rod 17c, a nut 17d screwed into the screw rod 17c, etc., and by turning the knob 17c,
Proximal sliding part 1 of apron 16 via piece 17''
By sliding the apron 6' on the upper surface of the rectangular cylinder 8 and the bracket 17a, the apron 16 can be freely adjusted and fixed in the forward and backward directions relative to the trajectory 2 of the implant 1. In the figure, 18 is a planting depth adjusting device, and 18' is its operating lever.

The present invention has the above-mentioned structure, and uses the rectangular cylinder 8 as the sliding support frame for the seedling stand 2 and the apron 16, so it is lightweight but has strong rigidity. Since it is directly fixed to precision parts such as the implant drive case 6 with tightening bolts 9 in parallel to the pipe frame 5 constituting the frame 3, an extremely stable mounting structure is achieved. Furthermore, the welding process during assembly can be reduced and welding distortion due to high temperatures can be minimized, resulting in a highly accurate sliding support frame with extremely high straightness even for long items. Therefore, the left and right reciprocating movement of the seedling platform 2 is performed smoothly and reliably, and the amount of seedlings scraped can always be kept uniform, thereby greatly increasing the planting accuracy.

Furthermore, as shown in Fig. 2, the rectangular tube body 8 is arranged to straddle the implant drive cases 6, 6, etc. in a pair at right angles to each other, so that the rectangular tube body 8 itself has high rigidity. The strength of the entire planting section frame 3 is significantly increased.

Furthermore, the present invention uses the single rectangular cylinder 8 as an apron 1.
It can also be used as a sliding support part 6 and a mounting part for the apron advance/retreat adjustment device 17, and although it has a simple structure, it can be used effectively in terms of shape and space without wasting it.

As described above, the present invention has a central transmission case that transmits power from the drive side, and an implant drive case that is integrally fixed to the central transmission case via a pipe frame that includes an intermediate shaft. Rice planting comprising a frame, supporting a seedling platform on the planting part frame so as to be able to reciprocate from side to side, and providing an apron for adjusting seedling scraping on the seedling removal side of the seedling platform so as to be movable forward and backward in the direction of feeding out the seedlings. In the machine, a rectangular cylinder is fixed to the planting section frame in parallel with the pipe frame, located below the tip side of the seedling tray in the direction of seedling feeding, and the side of the rectangular cylinder opposite the seedling tray is connected to the seedling tray. Since the slide piece mounting part and the sliding support part of the apron are configured as a sliding support frame for the seedling stand and apron, a long, lightweight and rigid rectangular cylinder can be used as a single piece for the planting part frame. It can be easily installed by bolt tightening, etc., and welding distortion during assembly can be minimized, resulting in an extremely precise support frame structure, allowing the seedling stand to be installed smoothly and reliably. By reciprocating from side to side, the amount of seedlings scraped can always be maintained uniformly, greatly increasing the precision of planting.In addition, the rectangular cylinder can serve as a reinforcement for the planting section frame. The overall strength can be significantly increased, and this, combined with eliminating the need for the above-mentioned extra mounting members, allows the weight of the entire planting section to be reduced as much as possible without reducing the strength, allowing the planting section to follow the field surface. It has many practical effects, such as improving performance and reducing power consumption.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Figure 1 is a side view of the planting section equipped with the present invention;
The figure is a plan view of the planting part frame, FIG. 3 is a vertical side view of the main part, and FIGS. 4 and 5 are vertical side views showing the mounting structure of the rectangular cylinder. In the figure, 2 is a seedling stand, 3 is a planting part frame, 4 is a central transmission case, 5 is a pipe frame, 6 is an implant drive case, 8 is a rectangular cylinder, 12 is a slide piece, 16 is an apron, 17 is an apron advancement/retraction adjustment device.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A seedling platform is supported on the planting section frames arranged in parallel in the longitudinal direction of the machine so as to be able to move back and forth from side to side, and an apron is provided on the seedling take-out side of the seedling platform for adjusting seedling scraping. In a rice transplanter, a rectangular cylindrical body is provided such that it can move forward and backward in the direction of feeding out the seedlings with respect to the locus of the transplanting body, and the square cylinder body is located at the lower end side of the seedling platform in the direction of feeding out the seedlings and extends over the plurality of frames of the planting section. 1. A frame structure of a planting section in a rice transplanter, characterized in that the rectangular tubes are horizontally connected, and the side of the rectangular cylinder facing the seedling stand is configured as a sliding support section of an apron. (2) The scope of the utility model registration claim, which is characterized in that the rectangular cylinder is formed into a rectangular cross section, the wide side of which is used as the sliding support part of the apron, and the narrow side used as the attachment part of the apron advancement/retraction adjustment device. A frame structure of a planting part in the rice transplanter according to item 1.