JPS6112731Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a combination claw device, and particularly to a combination claw device used in a rotary part of a tiller, a tractor, or the like.

Generally, when soil is to be collected using a rotary such as a tiller or a tractor, first a hatchet claw or regular claw is attached to the rotary, the tilling is done once, and then the hatchet claw or regular claw is removed from the rotary. , which can be reassembled into earth-harvesting claws and used for earth-harvesting work.

However, the above-mentioned method had a problem in that it required a great deal of labor and time to reassemble the rotary claws, which significantly reduced the efficiency of tilling and mulching.

The present invention was developed in view of the above-mentioned problems, and it is an object of the present invention to provide a combination claw device that can perform rotary tillage work and soil mulching work at the same time.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

Reference numeral 1 denotes a tilling shaft connected to a transmission shaft 5 supported at the lower end of a chain case 3 mounted on a rotary. On the outer peripheral surface of this tilling shaft 1, a plurality of first brackets 7 and second brackets 8 are arranged on the side (first They are fixed at appropriate intervals so as to form a radial pattern when viewed from the side of the figure. The second bracket 8 is provided at a substantially symmetrical position with respect to the first bracket 7 with a flange to be described later in between. The first bracket 7, the second bracket 8
Bolt through holes 9 that match each other are bored approximately in the center of each. Further, the tilling shaft 1
A large number of circular plates 11 as flanges are attached at appropriate intervals between each of the first bracket 7 and the second bracket 8 on the outer circumferential surface of the bracket. A plurality of bolt holes 13 are bored along the length.

Reference numeral 15 denotes a hatchet claw, which is an example of a tilling claw that fits into the gap 7a of the first bracket 7 and second bracket 8, and is formed with a curved blade edge on a plane perpendicular to the axis of the tilling shaft 1. The tip of the vertical blade portion 17 is bent to form a rotation radius R with respect to the axis P of the tilling shaft 1.
A horizontal blade part 19 having a horizontal blade part 19, a blade part 21 formed by twisting the horizontal blade part 19 inward (to the left in FIG. 1), and a mounting part 23 to the first and second brackets 7 and 8 are formed. The mounting portion 23
A through hole 27 that matches the bolt through hole 9 of the first and second brackets 7 and 8 is bored in the.

Reference numeral 29 denotes a normal claw, which is an example of a tilling claw attached to one side 7b of the first and second brackets 7 and 8, and is formed with a curved edge on a plane perpendicular to the axis of the tilling shaft 1. A blade portion 3 having a vertical blade portion 31
3 and a base portion 37 forming an attachment portion 35 to the first and second brackets 7 and 8, and the tilling shaft 1 at the tip portion 33a of the blade portion 33.
The rotation radius R' with respect to the axis P of the machete claw 15
The mounting portion 35 is formed to have a U-shaped cross section and is provided with a through hole 39 that matches the bolt through hole 9 of the first and second brackets 7 and 8. has been done.

Reference numeral 41 denotes a soil latch claw attached to the circular plate 11, which forms a claw part 43 having a gentle spiral curved surface on a plane orthogonal to the axis of the tilling shaft 1, and an attachment part 45 to the circular plate 11. The outer edge 43a of the claw portion 43 is formed in a substantially arc shape with respect to the tilling shaft 1, and the outer edge 43a of the claw portion 43 is formed in a substantially arc shape with respect to the axis P of the tilling shaft 1 at the maximum outer diameter portion 43b. Rotation radius R'' is the machete claw 1
5, and the mounting portion 45 has a bolt through hole 13 of the circular plate 11.
A through hole 49 is drilled to match the . Said first
The bracket 7 is fixed at an intermediate position within the width of the soil-clamping claw 41 in the direction of the tilling axis.

As shown in FIGS. 1 to 3, the combination claw according to the present invention has a machete claw 15 with its curved direction facing left in FIG. is fitted into the cavity 7a, and on the other hand, the normal claw 29 is turned in a direction opposite to the orientation of the hatchet claw 15, that is, to the right in FIG.
The bolt through holes 9 of the first and second brackets 7 and 8 are engaged with one side 7b of the second brackets 7 and 8.
Then, insert the bolt 51 into the through hole 27 of the attachment part 23 of the machete pawl 15 and the through hole 39 of the attachment part 35 of the regular pawl 29, and screw the nut 53 thereon to make the machete pawl 15 and the regular pawl 29 the same. 1st and 2nd brackets 7, 8
At the same time, it can be attached and detached. Furthermore, the mounting portion 45 of the earth-clamping claw 41 is engaged with the circular plate 11 with its curved direction facing left in FIG.
Bolts 55 are inserted into the bolt holes 13 of the circular plate 11 and the through holes 49 of the mounting portions 45 of the earth-harvesting claws 41, and nuts 57 are screwed thereto to removably fix the earth-harvesting claws 41 to the circular plate 11. .

When rotary tilling work is performed using the combination claws configured as described above, the soil is roughly plowed by the machete claws 15 rotating with a rotation radius R, and the soil that has been roughly plowed is rotated with a rotation radius R'. normal nails 2
At the same time, the crushed soil is crushed inwardly by the soil gathering claws 41 which rotate with a rotation radius R''.

As is clear from the above, according to the configuration of this invention, the levying claws, machete claws, and regular claws overlap in the rotational direction, so it is extremely rare for the levying claws to hit the field before plowing alone, and power reduction is achieved. I can figure it out. Furthermore, this effect can be maintained even if the direction of the claws is changed to change the direction of soil gathering.

Note that this invention is not limited to the above-mentioned embodiments, but can be implemented in other forms by making appropriate design changes.

[Brief explanation of the drawing]

Fig. 1 is a front explanatory view showing a part of the combination claw device of tilling claws and earth gathering claws, Fig. 2 is a side explanatory view, and Fig. 3
The figure is a sectional view taken along the line -- in FIG. 2. Explanation of symbols representing main parts of the drawings, 41...
...Earth gathering nail, 1... Cultivating shaft, 15... Nata Tsume (cultivating claw), 29... Ordinary claw (cultivating claw).

Claims (1)

[Scope of utility model registration request] A mulching claw is detachably attached to a flange fixed to a tilling shaft, and a first bracket fixed to the tilling shaft is attached to a first bracket fixed to the tilling shaft at an intermediate position within the width of the mulching claw in the direction of the tilling shaft. A regular claw that performs a crushing action is attached, and a second bracket provided at a substantially symmetrical position with the flange held between the first bracket is equipped with a machete claw that performs a plowing action and a regular claw that performs a crushing action. Features a combination claw device.