JPH0350653Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention consists of a seedling supply amount adjusting shaft equipped with rotatable arms on both left and right ends, horizontally mounted on the machine body so that it can be rotated and fixed. At the same time, each of the arm portions is engaged with the supply port forming member so as to move the seedling supply port forming member in the longitudinal direction of the seedlings by swinging, thereby adjusting the seedling supply amount of the rice transplanter. Regarding equipment.

[Conventional technology]

The rice transplanter described above moves and adjusts the seedling supply opening forming member so that the length of the seedlings taken out in the vertical direction of the seedlings by the seedling planting claw is changed by swinging the arm section by rotating the seedling supply amount adjusting shaft. In particular, the system is configured to adjust the amount of seedlings supplied.

In this seed supply amount adjustment device, conventionally, the seventh
As shown in the figure and FIG. 8, the seedling supply amount adjustment shaft 21
The arm portion was formed by a member 26 that was separately formed and welded. In other words, in order to enable integral rotation of the adjustment shaft 21 and arm section 26, a set bolt is provided to fix the arm section forming member to the adjustment shaft, or adjustment is required between the non-circular outer shape of the adjustment shaft and the arm section forming member. In order to avoid any problems that may occur when the two members are engaged with each other due to the non-circular shape of the shaft insertion hole, that is, there is no possibility that the arm portion and the adjustment shaft may rotate relative to each other due to slipping or engagement play. The arm forming member and the adjustment shaft were welded together, which caused the following inconveniences.

[Problem that the invention attempts to solve]

In other words, the working part of the arm on one end of the adjusting shaft and the working part of the arm on the other end of the adjusting shaft are misaligned in the circumferential direction and radial direction of the adjusting shaft due to welding distortion, and when adjusting the amount of seedlings supplied. In this case, there is a difference between the amount of movement of the acting part in the arm part on one end side in the vertical direction of the seedlings and the amount of movement of the acting part in the arm part on the other end side in the vertical direction of the seedlings, causing the seedling supply opening forming member to tilt, causing the formation of the feeding opening. The supply port forming member may become difficult to move due to distortion between the supply port forming member and its supporting member.
There was a difference in the amount of seedlings supplied at one end of the seedling stand and the amount of seedlings supplied at the other end.

An object of the present invention is to modify the supply amount so that the supply amount can be adjusted without inclining the member.

[Means for solving problems]

The present invention is characterized in that in the above-mentioned seedling supply amount adjusting device for a rice transplanter, the acting portion of each of the arm portions for the seedling supply port forming member is in a straight line parallel to the rotation axis of the adjusting shaft. Each of the arm portions is formed by bending the adjustment shaft so as to be positioned above the control shaft, and its functions and effects are as follows.

[Effect]

Since each arm part is formed by bending around the seedling supply amount adjusting shaft, the acting part of each arm part for the member for forming the supply port is aligned on the straight line, without forming distortion as in conventional welding. Precisely prepare for the position.

[Effect of idea]

The arm parts arranged in such a manner that the acting parts for the seedling supply port forming member are precisely positioned on the straight line allow the movement of the seedling supply port forming member to be adjusted without tilting, and the seedling supply amount adjustment is not complicated. It is now possible to smoothly take out seedlings with light operating force without using any force, and with good adjustment accuracy so that the same amount of seedlings can be taken out from one lateral end of the seedling to the other end.

〔Example〕

As shown in FIGS. 2 and 3, two seedling planting arms 5, 5 are attached to the rear of the self-propelled aircraft, which has one wheel 1, an engine 2, an engine bonnet 3, a control handle 4, etc. A seedling feeding device having one seedling stand 6 is provided, and a pair of grounding floats 27 are attached to the lower part of the self-propelled body in parallel from side to side on the left and right to form a traveling rice transplanter. It is configured.

As shown in FIGS. 1 and 3, seedlings are placed on a rail member 9 horizontally suspended between the pair of left and right body frames 8, 8 so as to form seedling supply ports 7, 7 for the pair of seedling planting arms 5, 5. A support rod 1 whose lower end side of the platform 6 is horizontally suspended between the pair of body frames 8, 8
The upper ends of the seedling stands 6 are slidably attached to each of the seedling stands 6. Then, a pair of the fuselage frames 8, 8
The rotating shaft 11 horizontally mounted on the transmission chain case 1
2 to the transmission case 13 for one seedling planting arm 5, and is configured to be driven in conjunction with the seedling planting movement of the seedling planting arm 5. As shown in FIG. 1, a seedling stand lateral feeder 14 is fitted around the rotating shaft 11 so as to be reciprocated left and right as the rotating shaft 11 rotates for engagement. 15 so as to be movable integrally with the seedling planting arm 5, and each of the seedling planting arms 5, 5 cuts the seedlings placed on the seedlings by a predetermined amount sequentially from one horizontal end to the other end and takes them out. Seedling stand 6 in conjunction with the planting movement
is configured to be transported back and forth in the lateral direction of the aircraft.

The transmission chain case 12 consists of two split case parts 12a and 12b, as shown in FIG. 5, and these split case parts 12a and 12b are arranged so that they overlap inside and outside at the joint in order to improve the sealing performance of the joint. and is fastened and connected to the support shaft of the transmission chain 16 by means of a bolt 17 which also serves the purpose. The pair of split case parts 12a and 12b are formed symmetrically as shown in FIG. 6 so that the molds for molding the pair of split case parts 12a and 12b can also be used.

As shown in FIG. 1, the long hole shape of the connecting bolt insertion hole 19 of the member 18 in which the connecting portion to the stay portion 8a of the pair of body frames 8, 8 is formed in the rail member 9, and the operation tool The rail member 9 and the seedling stand 6 are integrally formed by the functions of the long hole accommodation 20 provided in the seedling stand 15 and the accommodation (not shown) provided between the seedling stand 6 and the support rod 10. It is configured so that the placed seedlings can be moved in the vertical direction relative to the seedling planting arm 5. As shown in FIGS. 1 and 3, a seedling supply amount adjusting shaft 21 for moving the rail member 9 in the vertical direction of the seedlings is fitted into a notch in each of the pair of stay parts 8a, 8a. in this state, and in a state in which it is prevented from coming off by a retainer 22 fitted externally on the adjustment shaft 21 so as to be relatively rotatable, it is rotatably suspended horizontally on the pair of stay parts 8a, 8a, and an operating lever 2 extending integrally and rotatably from the boss portion 23 of the adjustment shaft 21;
4, and the operating lever 24 is inserted and locked into a notch of a lever guide 25 fixed to one of the fuselage frames 8 to be fixed at the adjustment position. configured,
The seedling supply amount adjusting device is configured to change and adjust the length of the seedlings taken out in the vertical direction by the seedling planting claws 5a of the two seedling planting arms 5, 5, respectively.

That is, as shown in FIG.
A pair of arm portions 26, 26 respectively located on both left and right ends of It is provided on the seedling supply amount adjusting shaft 21 in a state located above and in a state formed by bending the adjusting shaft 21. The acting portions 26a of the pair of arm portions 26, 26 are engaged with the connecting portion forming member 18 so as to act in contact with the connecting portion forming member 18, and when the operating lever 24 is operated to swing, the pair of acting portions 26a of the pair of arm portions 26, 26 The rail member 9 is arranged so that the degree of entry of the seedling planting claw 5a into the seedling supply port 7 is changed by swinging the arm parts 26, 26.
is adapted to move the seedlings along with the seedling stand 6 in the vertical direction.

[Brief explanation of drawings]

The drawings show an embodiment of the seedling supply amount adjustment device for a rice transplanter according to the present invention, FIG. 1 is a partially cutaway side view of the seedling supply amount adjustment device, and FIG. 2 is a side view of the entire walking type rice transplanter. Fig. 3 is a plan view of the traveling machine, Fig. 4 is a partially cutaway perspective view of the seedling supply amount adjustment shaft, Fig. 5 is a longitudinal sectional plan view of the transmission chain case, and Fig. 6 is an exploded perspective view of the transmission chain case. It is. FIG. 7 is a partially cutaway side view of a conventional supply amount adjusting device, and FIG. 8 is a partially cutaway perspective view of a conventional adjusting shaft. 9... Seedling supply port forming member, 21... Seedling supply amount adjustment shaft, 26... Arm part, 26a... Action part, P
... Axis center, L ... straight line.

Claims (1)

[Scope of utility model registration request] A seedling supply amount adjusting shaft 21, which has arm portions 26 rotatable integrally on both left and right ends, is horizontally mounted on the machine body so as to be rotatable and fixed, and each of the arm portions 26 can be rotated by swinging. A seedling supply amount adjusting device for a rice transplanter, which is engaged with the seedling supply port forming member 9 so as to move the seedling supply port forming member 9 in the longitudinal direction of the seedlings, Each of the arm portions 26 is connected to the adjustment shaft 2 so that the acting portion 26a for the seedling supply port forming member 9 is located on a straight line L parallel to the rotation axis P of the adjustment shaft 21.
A seedling supply amount adjustment device for a rice transplanter formed by the bending process of 1.