JPH0660311U - Stopper device for vertical feeding cam of rice transplanter - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the cam from bouncing twice, the bell crank type swinging arm that reciprocally rotates the vertical feed cam to vertically feed the seedlings on the seedling mounting table. It is possible to stop effectively. [Structure] A bell-crank type swinging arm 3 which intermittently reciprocates around a fulcrum 2 in conjunction with a push-pull rod 1 reciprocally rotates a vertical feeding cam 5 below a seedling mounting table 4 to mount a seedling. In the rice transplanter configured to vertically feed the mat seedlings on the table 4, the lower arm portion 3a of the swing arm 3 which is connected to the push / pull rod 1 and is below the fulcrum 2 is rearward. In the part, the lower arm portion 3a
A hard rubber member 7 having a V-shaped groove 6 in a plan view, which can be fitted when rotating backward, is attached to a holding frame 8 behind the hard rubber member 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stopper device for a vertical feed cam of a rice transplanter that serves as a stopper for a vertical feed cam that reciprocally rotates to vertically feed seedlings on a seedling mounting table.

[0002]

[Prior art]

 Conventionally, as seen in Japanese Patent Application No. 4-208210 filed by the applicant of the present invention, seedlings are produced by a bell crank type swinging arm which is intermittently reciprocally rotated around a fulcrum center in conjunction with a push-pull rod. In a rice transplanter configured to vertically feed the mat seedlings on the seedling placing table while reciprocally rotating the vertical feeding cam below the placing table, a rocker is used as a stopper for the vertical feeding cam that returns at high speed. It is known to provide a stopper member to abut the lower arm portion of the moving arm.

[0003]

[Problems to be solved by the device]

 However, since the stopper surface is a flat surface made of rubber, as the speed of the cam increases, the bouncing at the time of stop increases and the cam hits twice, making it impossible to increase the speed. It had a problem.

[0004]

[Means for Solving the Problems]

 The present invention has been devised so as to solve such a problem and to be suitably implemented with a simple structure. Therefore, the lower arm of the swing arm that is connected to the push-pull rod and is below the fulcrum. A hard rubber member having a V-shaped groove in a plan view, which can be fitted when the lower arm portion is rotated backward, is attached to a holding frame behind the rear portion of the portion. Is.

[0005]

[Action]

 Therefore, the lower arm portion of the swinging arm that rotates rearward by the backward movement of the vertical feed cam is stopped so as to be sandwiched by the V-shaped surface of the groove of the rubber member, and the repulsive force of the hard rubber member is reduced. In addition to being in the normal direction of the V-shaped surface, the frictional force with the lower arm acts in the direction to stop the movement of the cam, so that the cam can be effectively prevented from bouncing and the speed of the cam is increased. Is possible.

[0006]

【Example】

 FIG. 2 shows a part of the planting part of the rice planting machine. Above the float 9, a seedling take-out plate 11 having a seedling take-out port through which each planting claw 10 passes is provided side by side, and the seedling take-out plate is also provided. 11. A mat seedling is placed above 11 and can be vertically fed by a vertical feed roller. A seedling stand 4 is slanted so as to be reciprocally movable in the lateral direction, and below the seedling stand 4. Provided at two locations are vertical feed cams 5 that can feed vertically while rotating the vertical feed roller and return downward when the vertical feed roller is rotated by interposing a one-way clutch and a return spring. The upper arm portion 3b of the bell crank type swinging arm 3 pivotally supported on the fulcrum 2 which is the rear of the seedling taking-out plate 11 can contact the cam 5 above the frame 12 from below, Side feed case that is transmitted from the mission section 13 of the vehicle via the drive shaft 14. A swing arm 16 that swings in the front-rear direction by an intermittent rotation shaft is provided vertically from the space 15, and the rear end of the push-pull rod 1 that connects the front end to the lower end of the swing arm 16 is described above. The lower arm portion 3a of the swing arm 3 is connected to the lower end portion of the lower arm portion 3a through an adjuster 17 to have the same structure as the conventional structure.

A hard rubber member 7 that abuts when the lower arm portion 3a rotates rearward is provided behind the middle portion of the lower arm portion 3a of the swing arm 3, but in front of the rubber member 7. As shown in FIGS. 1, 5, 6 and 7, a groove 6 having a V-shape in plan view is formed by widening the entire front surfaces 6a, 6a, as shown in FIGS. A bolt 19 is extended rearward from the support metal 18 embedded in the base plate, a hole 20 is formed between the bottom portion of the groove 6 and the support metal 18, and the bolt 19 is extended from a frame 21 at the rear of the machine body. The bolt 19 is fitted and inserted in the holding frame 8 bent in the direction, and the tightening nuts 22 and 23 are screwed into the portion of the bolt 19 that sandwiches the holding frame 8 to contact both side surfaces of the rubber member 7 and the rubber member. A U-shaped holder that can support 7 so that it does not shake sideways. The rear portion of the plate 24 is fastened to the front side of the holding frame 8 by the nut 22.

Therefore, when the push-pull rod 1 is pulled in the direction of arrow A and the swing arm 3 rotates as indicated by the phantom line in FIG. 3, the upper arm portion 3b causes the cam 5 to move upward as indicated by the phantom line. The mat seedlings on the seedling mounting table 4 are vertically fed, and then the return spring causes the cam 5 to return at a high speed as shown by the solid line and swing by the cam 5. While the arm 3 is rotated as shown by the solid line, the lower arm portion 3a which is rotated backward as shown by the arrow B is stopped so as to be sandwiched in the V-shaped surface of the groove 6 of the rubber member 7. Since the repulsive force of the hard rubber member 7 is in the direction normal to the V-shaped surface and the frictional force between the lower rubber portion 3a acts to stop the movement of the cam 5, the cam 5 does not bounce. It can be effectively prevented, and the high cam 5 Speeding up is possible.

[0009]

[Effect of device]

 As described above, according to the present invention, the lower arm portion 3a of the swing arm 3 which is rotated rearward by the backward movement of the vertical feed cam 5 is stopped so as to be sandwiched in the V-shaped surface of the groove 6 of the rubber member 7. Then, the repulsive force of the hard rubber member 7a becomes the normal direction of the V-shaped surface, and the frictional force between the hard rubber member 7a and the lower arm portion 3a acts in the direction of stopping the movement of the cam 5, so that the cam 5 Bounce can be effectively prevented as in the conventional case, the speed of the cam 5 can be increased, and it has a feature that it can be suitably implemented with a simple structure.

[Brief description of drawings]

FIG. 1 is a plan view showing an essential part of an embodiment of the present invention.

FIG. 2 is a side view showing a part of a planting section of a rice transplanter.

FIG. 3 is a side view showing an enlarged main part.

FIG. 4 is a side view showing a part of FIG.

FIG. 5 is a plan sectional view showing a plan section of FIG.

6 is a sectional view showing a section taken along line VI-VI of FIG.

7 is a plan view showing an exploded view of FIG. 1. FIG.

[Explanation of symbols]

 1 push-pull rod 2 fulcrum 3 swing arm 4 seedling mount 5 vertical feed cam 3a lower arm 6 groove 7 rubber member 8 holding frame

Claims (1)

[Scope of utility model registration request] 1. A bell-crank type swing arm 3 which intermittently reciprocates around a fulcrum 2 in conjunction with a push-pull rod 1.
In the rice transplanter configured to vertically feed the mat seedlings on the seedling placing table 4 by reciprocally rotating the vertical feeding cam 5 below the seedling placing table 4, the interlocking connection with the push-pull rod 1 is made. In the rear portion of the lower arm portion 3a of the swing arm 3 below the fulcrum 2, a V-shaped groove 6 in a plan view which can be fitted when the lower arm portion 3a rotates backward is formed. A stopper device for a vertical feed cam, characterized in that a hard rubber member (7) is mounted on a holding frame (8) behind it.