JPH0122405Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a feed roll for an agricultural working machine configured so that the size of the recess provided on the circumferential surface can be infinitely adjusted.

(B) Prior Art Conventionally, there has been a known technology in which a payout roll is provided and the payout amount is adjusted by adjusting a recess provided in the roll body and the degree of insertion of an adjustment branch of an adjustment roll fitted into the recess. There is.

For example, there are techniques described in Japanese Utility Model Publication No. 54-1367 and Japanese Utility Model Application Publication No. 55-37394.

(c) Problems to be solved by the invention The present invention makes it easier to adjust the size of the recess in the feed roll of an agricultural working machine, which is configured so that the size of the recess provided on the peripheral surface can be adjusted without permission. , and the size of the recess once adjusted can be secured.

In the technique disclosed in Japanese Utility Model Application Publication No. 55-37394, the entire delivery roll is rotated by the rotation of the adjusting rotary body, and conversely, a pipe-shaped boss with a threaded portion is rotated. It was constructed so that the other end was fixed to the fuselage in a non-rotatable manner.

In such a structure, when adjusting the feeding amount,
It is necessary to rotate the feed roll by the number of rotations of the screw part, and if each part of the feed roll is clogged with seed waste or dust, it will be difficult to rotate, or if there are seeds inside the feed box. In such cases, it was not possible to adjust the feed roll by rotating it many times.

In the present invention, the operator controls the adjusting rotary body 23, which is fixed so as not to rotate on the feed roll side, and which is configured to rotate together with the adjusting roll 14 by normally engaging with the engaging teeth 26. In order to adjust the size of the recess 7, by rotating against the engaging teeth 26, the adjusting roll 14 and the adjusting branch rod 15 side are slid from side to side, and the feeding roll device is rotated. The size of the recess 7 can be adjusted without any trouble.

(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 small-diameter adjustment screw body 20 and a large-diameter roll body 10 are fitted on the outer periphery of the drive shaft 4 so as to rotate together, and a screw portion 24 is provided in a portion where the adjustment screw body 20 projects laterally beyond the roll body 10. , grooves 12 are carved on the outer circumferential surface of the roll body 10 , and the adjustment branch 15 of the adjustment roll 14 is fitted into the grooves 12 , and the core hole of the adjustment roll 14 is loosely inserted into the outer periphery of the adjustment screw body 20 . The adjustment roller 14 can be slidably adjusted left and right on the outer periphery of the adjustment screw body 20, and the adjustment rotary body 23 is screwed onto the threaded portion 24 of the adjustment screw body 20 that protrudes outward from the adjustment roll 14. , an engaging tooth portion 26 is provided between the adjusting rotary body 23 and the outer contact surface of the adjusting roll 14.
A tension biasing spring 27 is provided and projects from the outer periphery of the adjustment screw body 20 between the roll body 10 and the adjustment roll 14.
It is an intervening one.

(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.

Reference numeral 1 denotes a seed dispensing box, which is attached to the frame of the seeding machine (not shown), has an upper opening 2 connected to the seed box (not shown), and has a discharge pipe 3 connected to the rear of the bottom.
is open toward the ground, and a drive shaft 4 having a flat surface 5 passes through the center of the box wall.

Reference numeral 6 denotes a feeding roll device, which is comprised of a roll body 10 and an adjustment roll 14, and is housed in the center of the feeding box 1, with a boss fixed to the drive shaft 4, and eight recesses 7 are provided at equal intervals on the circumferential surface. The seeds that have entered the area are carried to the rear side and dropped into the discharge pipe 3. Reference numeral 8 denotes a brush that comes into contact with the trailing edge of the feed roll 6, and 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 feed roll 6 consists of a cylindrical roll body 10 and an adjustment roll 14, and the end plate 11 of the roll body is
The roll body is hollowed out in large steps to remove excess thickness, and eight grooves 12 having a half-moon cross section are formed at equal intervals around the roll body.

These grooves 12 extend longitudinally from the end plate 11 and reach the opposite side, leaving a smooth annular surface 1 on the end plate side.
3 tightly against the box wall of the feeding box 1 to prevent leakage of seeds.

The adjustment roll 14 has eight adjustment branch rods 15 having the same cross-sectional shape as the grooves 12 of the roll body on its periphery.
are provided protrudingly at equal intervals, and the branch rods are fitted into the grooves 12 to form recesses 7 and a cylindrical surface on the outer peripheral surface of the roll body 10.

Reference numeral 16 denotes a shallow curved surface cut out diagonally at the back end of each groove 12, and opposite to this, a shallow curved surface 17 is cut out diagonally at the tip of the adjustment branch rod 15. Double curved surface 1
6 and 17 constitute the ends of the recess 7.

Reference numeral 20 designates a pipe-shaped adjusting screw body having a diameter smaller than that of the roll body 10, which is housed in the shaft portion of the roll body 10 and coupled together, and is extended to the side of the roll body to form a boss portion of the adjusting roll 14. It is inserted into the core hole and fitted to rotate together with the drive shaft 4, and left and right movement is stopped by two snap springs 21, 21, and a flat surface 22 is provided in the same way as the drive shaft 4 to prevent rotation.

Reference numeral 23 denotes an adjustment rotating body for adjusting the fitting condition of the adjustment branch rod 15, which is screwed into a threaded portion 24 cut into a protruding portion of the pipe-shaped adjustment screw body 20 to rotate the adjustment roll 14.
The adjusting rotary body 23 is provided with an uneven edge 25 around the entire circumference to make it easier to turn the adjusting rotary body 23.
Engagement tooth portion 2 provided at the contact portion between 3 and the adjustment roll 14
6 are engaged to prevent the adjustment rotary body 23 from moving unnecessarily.

Reference numeral 27 denotes a tension biasing spring that is wound around the pipe-shaped adjustment screw body 20, and its both ends are housed in the hollowed out portions of the shafts of the roll body 10 and the adjustment roll 14, and both are tensioned to tighten the adjustment roll 14. Press it against the adjustment rotary body 23.

Reference numeral 28 denotes a scale provided on the flat surface 22 of the boss, and the degree of fitting of the adjusting branch 15 is determined by reading this scale.

(f) Function of the invention An embodiment of the invention has the above-mentioned configuration, and includes eight grooves 12 having a half-moon shape in cross section on the circumferential surface of the roll body 10.
, and eight adjustment branch rods 15 with the same cross-section that protrude from the adjustment roll 14 are fitted therein, so eight recesses 7 with a half-moon cross section are formed on the circumferential surface of the delivery roll 6, and the adjustment When the rotating body 23 is turned to move the adjusting branch 15 in and out, the size of the recess 7 can be adjusted steplessly depending on the fit.

Therefore, the size of the recess 7 is adjusted according to the size of the seeds and the amount to be delivered, and a desired amount of seeds are placed in the recess 7 and delivered.

Since this recess has a half-moon shape in cross section, it is rounded from the bottom to both sides, so when the seeds that have entered the recess are scraped off with the brush 8, they will not break or get damaged even if they rub against each other. .

When the adjusting branch rod 15 completely closes the groove 12, the respective curved surfaces 16 and 17 create a small recess 7'.
I can do it. This is suitable for sowing small seeds such as Chinese cabbage, cabbage, and carrots;
Since both the front and back sides are rounded, the seeds will not be damaged.

When adjusting the fitting condition of the adjusting branch rod 15,
Return the adjusting rotary body 23 once and put the branch rod in and take it out.
When the recess 7 reaches the desired size by looking at the scale 28, press the adjusting arm 15 with the fingers of your left hand and turn the adjusting roll 1.
4, turn the adjusting rotary body 23 with your right hand and press the adjusting roll 14.

At this time, the adjustment roll 14 is pressed against the tension biasing spring 2.
The adjustment roller 14 and the adjustment rotor 23 are pressed against the adjustment rotor 23 by the elastic force of 7, the engaging tooth portions 26 of both engage, and the adjustment rotor 23 is screwed into the threaded portion 24 of the boss. Never move. Once adjusted, the size of the recess 7 does not change.

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

Firstly, in the technology disclosed in Japanese Utility Model Application Publication No. 55-37394, the entire delivery roll is rotated by the rotation of the adjustment rotary body, and conversely, the pipe with a threaded portion is The shape of the boss was fixed to the fuselage so that it would not rotate.

Due to this structure, when adjusting the feeding amount, it is necessary to rotate the feeding roll by the number of rotations of the screw part, and if each part of the feeding roll is clogged with seed waste or dust, it may not rotate. Moreover, if there were seeds inside the dispensing box, it was impossible to adjust the dispensing amount by rotating the dispensing roll many times.

In the present invention, the feeding roll side is fixed so as not to rotate, and the adjusting roller 14 is rotated by rotating the adjusting rotating body 23, which is normally engaged with the engaging teeth 26 and configured to rotate together with the adjusting roll 14. 1
Since the feeding amount can be adjusted by sliding the side of the adjusting branch 4 and the adjusting branch 15 from side to side, the size of the recess 7 can be adjusted without rotating the feeding roll.

Second, since the engagement teeth 26 for the adjustment rotary body 23 to rotate together with the delivery roll 6 except during adjustment are formed directly between the side surface of the adjustment roll 14 and the side surface of the adjustment rotary body 23, The tension biasing spring 27 provided to bias the adjustment roll 14 can also bias the engagement tooth portion 26.

Therefore, unlike the prior art, there is no need to provide a detent ball or a separate biasing spring for pressing the detent ball.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of the embodiment housed in a dispensing box, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. 6... Feeding roll, 7... Recess, 10... Roll body, 12... Groove, 14... Adjustment roll, 1
5...Adjustment branch rod, 20...Adjustment screw body, 23...
Adjustment rotating body, 24...screw part, 26...engaging tooth part, 27...tension biasing spring, 28...scale.

Claims (1)

[Scope of utility model registration request] A small-diameter adjustment screw body 20 and a large-diameter roll body 10 are fitted on the outer periphery of the drive shaft 4 so as to rotate together, and a screw portion 24 is provided in a portion where the adjustment screw body 20 projects laterally beyond the roll body 10. , grooves 12 are carved on the outer circumferential surface of the roll body 10 , and the adjustment branch 15 of the adjustment roll 14 is fitted into the grooves 12 , and the core hole of the adjustment roll 14 is loosely inserted into the outer periphery of the adjustment screw body 20 . The adjustment roller 14 can be slidably adjusted left and right on the outer periphery of the adjustment screw body 20, and the adjustment rotary body 23 is screwed onto the threaded portion 24 of the adjustment screw body 20 that protrudes outward from the adjustment roll 14. , an engaging tooth portion 26 is provided between the adjusting rotary body 23 and the outer contact surface of the adjusting roll 14.
A tension biasing spring 27 is provided and projects from the outer periphery of the adjustment screw body 20 between the roll body 10 and the adjustment roll 14.
A feed roll for an agricultural working machine characterized by being interposed with.