JPH0132827Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is an agricultural working machine configured so that the size of the recess provided on the circumference can be infinitely adjusted to adjust the amount of seeds and fertilizer delivered. This invention relates to an improvement of the feed roll.

(b) Conventional technology Conventionally, in rolls for dispensing seeds, fertilizers, etc.
The technique of infinitely adjusting the size of the recess by moving the branch rod back and forth is known.

For example, there is a technique described in Japanese Utility Model Application Publication No. 57-84812.

(c) Problems to be solved by the invention However, in the above-mentioned conventional feeding roll, the locking cylinder protrudes from the fixed side roll body, and the locking rod is located in the receiving cylinder hole on the sliding side disk side. The structure is such that the sliding disc slides smoothly against the fixed roll main body after being fitted in, but the recess formed between the fixed roll main body and the sliding disc is different from the previous conventional technology. Similarly, it is made up of the inner periphery of the groove, the tip of the branch rod, and the bottom surface of the groove.

Therefore, small seeds get stuck between the bottom of the groove on the fixed side and the tip of the branch rod on the sliding side, causing the branch rod to rise and open outward, causing the tip of the branch rod to spread around the periphery of the roll body on the fixed side. There was a problem that it protruded from the surface and obstructed the rotation of the feed roll.

The present invention solves the above problems.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A plurality of grooves 12 are provided on the outer periphery of the fixed roll body 10, and a receiving hole 29 is provided in the smooth surface 13 of the fixed roll body 10 and communicates with the grooves 12. On the peripheral edge of the sliding disc 14, there is a branch rod 15 having the same cross-sectional shape that fits into the plurality of grooves 12 from the side, and a branch rod 15 that extends further from the branch rod 15 and fits into the receiving hole 29. A locking rod 28 is integrally protruded, and a recess 7 is formed by the inner surface of the groove 12, the tip surface of the branch rod 15, and the outer peripheral surface of the locking rod 28, and the size of the recess 7 is determined by sliding. Stepless adjustment is possible by sliding the movable side disc 14.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

In the embodiment shown in the drawings, 1 is a seed dispensing box which is attached to the frame of the seeding machine and has an upper opening 2 connected to the seed box, and a discharge pipe 3 constructed at the rear of the bottom opening toward the ground. , an actuating shaft 4 having a flat surface 5 passes through the central part of the box wall.

Reference numeral 6 has a feeding roll mechanism, which is placed in the center of the feeding box 1, the boss is fixed to the operating shaft 4, eight recesses 7 are provided on the circumferential surface at equal intervals, and the recesses 7 are rotated clockwise.
The seeds that have entered are carried to the rear side and dropped into the discharge pipe 3.
8 is a brush 8 that comes into contact with the trailing edge of the feed roll 6;
It serves to keep the amount of seeds fed into the recess 7 constant. Reference numeral 9 denotes a fitting for attaching the feeding box 1 to the frame of the seeding machine.

The feeding roll 6 has a cylindrical fixed roll main body 10.
and a sliding side disc 14, and a fixed side roll body 1
A core plate 11 is provided approximately in the center by hollowing out the inside of the roller 0, and eight grooves 12 are formed at equal intervals on the circumferential surface of the fixed roll body 10.

The groove 12 extends in the longitudinal direction from the right end of the circumferential surface, leaving a smooth surface 13 on the opposite side, and this smooth surface 13 is brought into close contact with the box wall of the dispensing box 1 to prevent leakage of seeds.

Eight branch rods 15 having the same cross-sectional shape as the grooves 12 of the fixed roll body 10 are protruded from the circumference of the sliding disk 14 at equal intervals.
2 to form the fixed roll main body 10 into a cylindrical surface.

16 is an inclined surface provided on the inner end surface of each groove 12;
Opposed to this, an inclined surface 17 is also provided at the tip of the branch rod 15.

Reference numeral 20 denotes an elongated pipe-shaped boss which is integrally connected to the core plate 11 of the fixed roll main body 10, projects long to the side, and is inserted into the core hole of the sliding disc 14.
Two snap springs 21 and 2 are placed over the operating shaft 4.
1 stops the left and right movement, and like the operating shaft 4, a flat surface 22 is provided to prevent rotation.

Reference numeral 23 denotes an adjustment plate for changing the fitting condition of the branch rod 15, which is screwed onto a threaded surface 24 cut into the protruding part of the boss 20 of the feed roll to hold down the sliding side disk 14 and adjust the entire circumference of this adjustment plate. A concave-convex edge 25 for finger hooking is provided to make it easier to rotate, and a tooth-shaped edge 26 provided at the contact portion of the adjusting plate 23 and the sliding side disc 14 is engaged, so that the adjusting plate 2
Make sure that 3 does not move unnecessarily.

27 is a spring wrapped around the boss 20 of the feed roll, and both ends are connected to the fixed roll main body 10 and the sliding disc 1.
4, and press both discs against the adjustment plate 23 by stretching them.

Eight grooves 12 are formed on the circumferential surface of the fixed roll body 10.
Since eight branch rods 5 of the same cross-sectional shape protruding from the sliding disc 14 are fitted together, eight recesses 7 are formed on the circumferential surface of the feeding roll 6 mechanism, and the adjustment plate 23 is By rotating the branch rod 15 to move it forward or backward, the size of the recess 7 can be infinitely adjusted depending on the fit.

Therefore, the size of the recess 7 is determined by looking at the scale (not shown) carved on the flat surface 22, and the size of the recess 7 is adjusted according to the size of the seeds and the amount of feed, and the desired amount of seeds are placed in the recess. Put it in place 7 and send it out.

When the adjustment of the recess 7 is completed, the sliding side disc 14 releases the spring 2.
7 is pressed against the adjustment plate 23, and the tooth profile edges 2 of both
6 are engaged and the adjusting plate is screwed into the threaded surface 24 of the boss, so the sliding side disc 14 and the adjusting plate 23 never move, and the size of the recess 7 once adjusted will not change. do not.

When the branch rod 15 completely closes the groove 12, a small recess 7' with a V-shaped cross section is formed by the inclined surfaces 16 and 17, which is suitable for sowing small seeds such as cabbage and carrots. Suitable.

In this embodiment, the grooves 12 cut out on the circumferential surface of the roll body 10 and the branch rods 15 fitted thereto are extended, and a long and narrow locking rod 28 is integrally attached to the inner circumference of the tip of each branch rod 15. Holes 29 protruding from the grooves 12 and receiving the locking rods 28 are extended into the smooth surface 13 in a communicating state, and the locking rods 28 are inserted into the grooves 12.
It is inserted into the receiving hole 29 along the bottom surface of the.

With this configuration, when adjusting the size of the recess 7 by inserting and removing the branch rod 15, the length can be set while the locking rod 28 is always placed in the receiving hole 29. .

and an inner surface including the inclined surface 16 of the groove 12;
The recess 7 is formed by the tip end surface formed by the inclined surface 17 of the branch rod 15 and the outer circumferential surface of the locking rod 28.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

Firstly, in the prior art Japanese Utility Model Application Publication No. 57-84812, the bottom of the fixed side groove and the tip of the branch rod form a recess, so that small seeds S can slide. The branch rod 15 is inserted between the branch rod 15 and the bottom surface of the fixed groove, and the branch rod is opened outward, so that the tip of the branch rod 15 protrudes from the periphery of the roll body 10 and prevents the rotation of the feed roll 6. It hinders it.

In contrast, in the present invention, Figs.
As shown in the figure, a locking rod 28 that slides together with the branch rod 15 is provided at the tip of the branch rod 15, and a recess is formed between the outer periphery of the locking rod 28, the tip of the branch rod 15, and the inner periphery of the groove 12. 7, there is no gap between the bottom of the recess 7 and the tip of the branch rod 15, and there is no gap in which small seeds such as spinach can enter.

Second, a plurality of pieces protrude from the sliding side disc 14,
Since it is in a cantilevered state, the tip of the sliding side branch rod 15, which tends to open outward, is attached to the fixed side roll body 1.
By fitting into the receiving hole 29 bored inside the smooth surface 13 of the branch rod 15, the spreading of the tip of the branch rod 15 can be suppressed.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the embodiment stored in the feeding box, Figure 2
The figure is a sectional view taken along the line A-A in Fig. 1, Fig. 3 is an exploded perspective view of the embodiment, and Figs. 4 and 5 are explanatory diagrams showing the state of the branch rod in the conventional product and the branch rod in this embodiment. It is. 6... Feeding roll mechanism, 7... Recess, 10...
Fixed side roll body, 12... Groove, 14... Sliding side disc, 15... Branch rod, 20... Boss of roll body, 23... Adjustment plate, 24... Threaded surface, 27...
Tension spring, 28...locking rod, 29...receiving hole.

Claims (1)

[Scope of utility model registration request] A plurality of grooves 12 are provided on the outer periphery of the fixed roll body 10, and a receiving hole 29 is provided in the smooth surface 13 of the fixed roll body 10 and communicates with the grooves 12. On the peripheral edge of the sliding disc 14, there are branch rods 15 having the same cross-sectional shape that fit into the plurality of grooves 12 from the side, and fittings that extend further from the branch rods 15 and fit into the receiving holes 29. A locking rod 28 is integrally provided, and a recess 7 is formed by the inner surface of the groove 12, the tip surface of the branch rod 15, and the outer peripheral surface of the locking rod 28, and the size of the recess 7 is set on the sliding side. A feed roll for an agricultural working machine, characterized in that it can be infinitely adjusted by sliding a disc 14.