JP2001204201A - Device for preventing claw shaft wrapping in rotary tillage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for preventing winding of a claw shaft in a rotary plowing device capable of preventing winding of weeds or the like around a claw shaft or the like during a tillage work and continuing good tillage work. I do. SOLUTION: In a rotary tillage device that performs a tillage operation by rotating a tillage claw 3 radially implanted on a claw shaft 2 of a tillage unit, a crawler shaft 2 is positioned parallel to the claw shaft 2 at a position separated from the claw shaft 2. A plurality of winding prevention rods 8 which are arranged and rotate and move with the rotation of the claw shaft 2 are mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing winding of a claw shaft in a rotary tillage device.

[0002]

2. Description of the Related Art Conventionally, there is known a rotary tillage device which performs a tillage operation by rotating a tillage claw radially implanted on a claw shaft of a tillage portion. However, in the conventional rotary tillage device, the weeds and the like are wound around the claw shaft and the claw holder on which the tillage claw is attached during the tillage work, and if the work is continued as it is, the resistance due to the winding gradually increases and the tillage is performed. Problems such as a decrease in performance occur. Conventionally, in such a case, the work was temporarily interrupted, and the entangled weeds and the like were cut and removed with a sickle or the like.However, this removal work is not easy, and is a troublesome work that requires much time and effort. There was a desire for improvement.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned conventional problems, and has as its object to prevent winding of weeds or the like around a claw shaft or the like during tillage work. The present invention provides a device for preventing winding of a claw shaft in a rotary tillage device capable of continuing good tillage work.

[0004]

In order to achieve the above-mentioned object, the present invention provides a rotary tillage device in which a claw shaft is prevented from being wrapped around a rotary tillage device. In a rotary tillage device that performs a tillage operation by rotating, a plurality of winding prevention rods are disposed at a position separated from the claw shaft and substantially parallel to the claw shaft and rotate and move with the rotation of the claw shaft. It is characterized by:

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a schematic configuration in the vicinity of a tillage portion of a rotary tillage device according to the present invention,
FIG. 2 is a partially broken front view showing the configuration near the claw axis, and FIG.
FIG. 4 is a diagram showing the configuration near the claw axis, as viewed from the axial direction.

In the rotary tiller according to the present invention, power is transmitted from an engine mounted on an engine frame (not shown) via a drive mechanism, and a pawl shaft is provided via a chain mechanism including a sprocket 4 in the transmission case 1. 2 is driven to rotate, and a plurality of tillage claw 3 radially attached to the claw shaft 4
The tillage work is performed by rotating.

Next, the configuration near the claw shaft 2 will be described in detail. One end of the claw shaft 2 formed in a long cylindrical shape is fixed to a sprocket shaft in the transmission case 1 via an under shaft flange 5, and the other end is supported on a support frame 7 via an under shaft flange 6. Have been. A plurality of claw holders 11 are fixedly provided at predetermined positions on the peripheral surface of the claw shaft 2, and the tillable claw 3 is inserted into the claw holder 11 and fixed with bolts 15 to radially surround the claw shaft 2. The book plow 3 is attached.

The claw shaft 2 is located at a position separated from the claw shaft 2.
And four winding prevention rods 8 are arranged at equal intervals around the axis, and the four winding prevention rods 8 are made of a round bar-shaped rigid body. It is mounted on the claw shaft mounting flanges 9 and 10. The right and left claw shaft mounting flanges 9 and 10 have a diameter larger than the flange diameter of the left and right under shafts 5 and 6 and slightly larger than the outer diameter of the claw holder 11. Therefore, as is clear from FIG. 3, each of the winding prevention rods 8 is disposed in the axial direction so as to cover the space at the base of each of the plowing claws 3.

The right and left claw shaft mounting flanges 9 and 10 are provided with four mounting holes 12 and 13 at equal intervals in portions near the outer periphery, respectively. The winding prevention rods 8 are inserted into the mounting holes 12 and 13 from the axial direction to perform positioning, and the removal is prevented by a hair pin or a split pin 14 or the like. Therefore, each of the winding prevention rods 8 is configured so that the rod itself can rotate (rotate).

As described above, the anti-winding rod 8 is arranged around the pawl shaft 2, and when the pawl shaft 2 rotates, the anti-winding rod 8 also rotates together. Direct winding of the grass is reduced, and even if the grass is entangled with the winding prevention rod 8, since the winding prevention rod 8 rotates on a circumference larger than the claw shaft 2, the winding prevention rod 8 is temporarily stopped. The grass that is to be wound around is also easily detached, and even if it does not come off completely, the grass is entangled only to the extent that it can be easily removed later, so that the tillage performance does not decrease.

Further, the anti-winding rod 8 can be easily attached and detached without using tools or the like, and since the anti-winding rod 8 itself is mounted so as to be rotatable, the anti-winding effect can be further improved. Further, as described above, the winding prevention rod 8 is disposed at the base of each plow 3 so that the bolt 15 for mounting the claw is prevented from being loosened.

In the above-described embodiment, the number of winding prevention rods 8 is four, but the present invention is not limited to this. However, if the number is too large, the resistance during excavation increases, so that up to about six is particularly preferable.

FIG. 4 is a front view showing another embodiment of the present invention. The same parts as those in FIG. 2 are denoted by the same reference numerals, and redundant description will be omitted. In this embodiment, the left and right ends of the anti-winding rod 8 are protruded from the claw shaft mounting flanges 9 and 10 as shown by reference numeral 8a in the figure.
Grass can be prevented from being entangled with the inner bearing portion.

FIG. 5 is a front view showing another embodiment of the present invention. In the present embodiment, a plowing claw 16 with a guide for locking the central portion of the winding prevention rod 8 is attached to the central portion of the claw shaft 2. A tillage claw having an insertion hole for the prevention rod 8 may be attached. Thereby, the run-out of the winding prevention rod 8 can be prevented during the operation, and the positioning of the winding prevention rod 8 at the time of mounting can be reliably performed.

FIGS. 6 and 7 are a front view and an axial view showing another embodiment of the present invention. In this embodiment,
A guide plate 17 whose tip is slightly bent is fixed to the claw holder 11 at a substantially central portion of the claw shaft 2 by welding or the like.
The central part of this is locked. Also in this case, similarly to the above-described embodiment, the run-out of the anti-winding rod 8 can be prevented, and the positioning of the anti-winding rod 8 at the time of mounting can be reliably performed.

[0016]

As described above in detail, the device for preventing the claw shaft from being wound in the rotary tillage device of the present invention is disposed substantially parallel to the claw shaft at a position separated from the claw shaft of the tillage unit. By installing a plurality of anti-winding rods that rotate with the rotation of the claw shaft, grass is less likely to wind directly on the claw shaft during tillage work. Even if entangled, it is easy to come off immediately, and even if it does not come off completely, the grass is entangled only to the extent that it can be easily removed later, so there is no decrease in tillage performance, so good tillage work In addition to this, there is an effect that conventional troublesome grass removal work is hardly required.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic configuration near a tillage section of a rotary tillage device according to the present invention.

FIG. 2 is a partially broken front view showing a configuration near a claw shaft.

FIG. 3 is a diagram showing a configuration near a claw axis, as viewed from an axial direction.

FIG. 4 is a front view showing another embodiment of the present invention.

FIG. 5 is a front view showing another embodiment of the present invention.

FIG. 6 is a front view showing another embodiment of the present invention.

FIG. 7 is a view seen from an axial direction in another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission case 2 Claw shaft 3 Tilling claw 4 Sprocket 5, 6 Under shaft flange 7 Support frame 8 Winding prevention rod 9, 10 Claw shaft mounting flange 11 Claw holder 12, 13 Mounting hole 14 Hairpin 15 Bolt 16 Guided tillage Claw 17 Guide plate

Claims (1)

[Claims] 1. A rotary tillage device that performs a tillage operation by rotating a tillage claw radially planted on a claw shaft of a tillage unit, and is disposed substantially parallel to the claw shaft at a position separated from the claw shaft. And a plurality of anti-winding rods, which are rotatable with the rotation of the pawl shaft, are mounted.