JPS5858041B2 - Cultivating claws - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a forged tilling claw, and more particularly to a tilling claw whose strength is improved by its shape.

For tilling and crushing soil in agricultural fields, tillage rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary rotary in which tilling claws nor the rotary rotary rotary rotary rotor or a cultivation rotary rotary rotary rotary rotary tilling or tilling rotary rotors as is used as to be used is used.

The most important part of this rotary tiller is the tiller claw.The vertical blade part is formed with an equiangular vortex curve to prevent medicinal herbs from getting tangled, and the horizontal blade part is used to remove the tilled soil. It is formed by giving it the ability to call home.

There is a need for a tilling claw that satisfies these performance requirements, is lightweight, has little tillage resistance, and is durable.

The lifespan of these tilling claws is determined by wear and tear with the cultivated soil in the field, but even within the lifespan, the tilling claws may hit gravel, etc. that exist in the field, and the maximum bending moment may occur during tilling work. It may break at the attachment part to the additional tilling claw shaft, or even if it does not break, it may bend and become unusable.

Therefore, the present invention provides a tilling claw formed by forging that can be used effectively for the entire life by preventing the attachment part from bending as much as possible during work, and can reduce the tilling resistance. It is an object of the present invention to provide a tilling claw that can be constructed to be lightweight as a whole.

For this purpose, the present invention provides a concave curved surface on the entire side surface on the side where the horizontal blade is formed, in a predetermined range from the end of the vertical blade on the attachment side toward the horizontal blade, and where the maximum bending moment is applied during tilling work. The other features are that the entire other side surface is formed into a convex curved surface, this curved surface forming area is made into a double-edged blade edge, and the remaining part, which is the part that performs the constant tilling action, is made into a single-edged blade. be.

Hereinafter, details of the present invention will be explained with reference to the accompanying drawings.

In the figure, the reference numeral indicates the entire tilling claw, and there is a vertical blade part 1 having a blade edge 11 formed by a curved line such as an equiangular vortex line, and a tip side of this vertical blade part 1. A horizontal blade part 2 bent and formed along a virtual cylindrical peripheral surface with the tilling claw axis J as the axis;
Furthermore, it is formed by a mounting part 3 connected to the other end of the vertical blade part and fixed to the tilling claw shaft, and is integrally formed by forging.

This tilling claw K is attached to the mounting holder F of the tilling claw shaft J, and in actual tilling work, the part that performs the tilling action almost all the time is the part W shown in Fig. 2, which is the part that receives the load due to the largest bending moment. is the base 31 of the attachment part 3.

Therefore, the entire side surface on the side where the horizontal blade part 2 is bent is recessed in a predetermined range from the end of the vertical blade part 1 on the attachment part 3 side toward the horizontal blade part 2, and where the maximum bending moment is applied during tilling work. The curved surface 12 and the entire opposite side surface are made into a convex curved surface 13, and the blade edge 11 in this part is made into a double-edged part 11a, increasing resistance to bending and forming a blade without making the blade edge 11 thin. .

Furthermore, the part W where tilling work is carried out almost constantly on the cultivated soil S
The blade edge 11 is formed by a single-edged portion 11b, which reduces resistance during tilling.

Therefore, since the tilling action part W has the blade edge 11 which is a single-edged part 11b, tilling work can be performed with less cutting resistance, and in particular, the part of the vertical blade part 1 near the attachment part 3 is Since the entire side surface is formed as a concave curved surface 12 and the entire opposite side surface is formed as a convex curved surface 13, the bending load due to the resistance applied to the horizontal blade portion 2 is received from the concave curved surface 12 side.
It receives tensile force along this concave curved surface 12, so it can withstand large bending loads well without breaking or bending, and has a thinner wall thickness than conventional tilling claws, making it lightweight and reducing tilling resistance. Moreover, since this part is used as the blade edge 11 of the double-edged part 11a, the blade is attached without reducing the wall thickness and therefore the strength.
However, since it is shallow from the ground surface and the soil pressure is small, it does not have much of an impact.

As is clear from the above description, according to the tilling claw of the present invention, the attachment part, the vertical blade part, and the horizontal blade part are integrally formed by casting, and the horizontal blade part is formed from the attachment part side end of the vertical blade part. The entire side surface on the side where the horizontal blade is formed is made into a concave curved surface, and the entire side surface on the opposite side is formed into a convex curved surface in the part where the bending moment is applied to the maximum during tilling work. Since it is received from the concave curved side, it can withstand heavy bending loads well, increasing durability.Also, since the curved surface forming part is double-edged and the remaining part is single-edged, tillage resistance is reduced and the overall weight is light. However, it is possible to provide tilling claws with a long service life.

[Brief explanation of the drawing]

FIG. 1 is a side view of a tilling claw according to the present invention, and FIG. 2 is an explanatory diagram illustrating a tilling operation state. K... Cultivating claw, 1... Vertical blade part, 11.
...Blade edge, 11a...Double-edged part, 11b.
...Single edge part, 12...Concave curved surface, 13...
...Convex curved surface, 2...Horizontal blade part, 3...
・Mounting part, J......Tilling claw shaft, F......Mounting holder S......Cultivating soil, W......Tilling action part.

Claims (1)

[Claims] 1. A vertical blade part in which the blade edge or a part thereof is formed along a conformal vortex line, and a horizontal blade part formed at the tip of this vertical blade part along an imaginary cylindrical circumferential surface with the tilling claw axis as the axis. In a tilling claw that is integrally formed by forging and includes a blade part and a mounting part that is fixed to the tillage claw shaft, the tilling claw can be tilled in a predetermined range from the mounting part side end of the vertical blade part toward the horizontal blade part. The entire side surface on the side where the horizontal blade part is formed, where the maximum bending moment is applied during work, is made into a concave curved surface, and the entire other side surface is formed into a convex curved surface, and this curved surface forming area is made into the edge of the double-edged blade, and the remaining part is made into a concave curved surface. A tilling claw characterized by having a single-edged blade edge at the part that constantly performs tilling action.