JPS5860908A - Earth contact type reaper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a brush cutter.

Conventional brush cutters generally have a rotary blade attached to one end of a tubular member, and a power unit such as an engine attached to the other end via a flexible rotating shaft, and the operator must connect the power unit such as the engine to the other end. They cut grass by carrying the handle on their backs or over their shoulders while holding the handle attached to the tubular member. Therefore, not only did the work require a lot of effort, but the vibrations generated by each part of the brush cutter were directly transmitted to the worker, which, combined with the exhaust gas and noise from the engine, made mowing work extremely tough work.

Therefore, the present invention was made for the purpose of providing a new brush cutter that eliminates the drawbacks of such conventional brush cutters,
A grounding leg body is provided on a rotating shaft extending downward from the power unit, and is rotated by the drive of the power unit, and (b) the torque of the rotating shaft is transmitted to a mowing blade disposed on the mu side of the grounding leg body, By operating the handle, the grass cutter can be mowed while the main body of the brush cutter is placed on the ground.Hereinafter, an embodiment will be described with reference to the drawings.

Fig. 1 is a medullary surface view of a brush cutter, Fig. 2 is a quotient of the same plane,
An engine assembly 2 and a fuel tank 3 are installed on the chassis l, and a handle 4 is attached to the rear.

A grounding leg 7 is attached to a rotating shaft 5 extending downward from the engine via a centrifugal clutch 6. This grounding leg 7 is arm-shaped and has a smooth bottom surface. (B)
A gear box 8 is located in the middle of the rotating shaft 5, and is configured to transmit torque to a shaft 9 extending horizontally forward. A gear box 10 is also provided at the tip of this shaft 9, and torque is transmitted from there to a shaft 11 extending downward. A grass cutting blade 12 is attached to the lower end of this shirt 11.

Next, handling operations will be explained in accordance with the above embodiment.

When the engine is started and the rotational speed is increased, the centrifugal clutch 6 is engaged, and the ground leg 7 starts rotating at a rotational speed equal to the engine rotational speed. In this case, a speed reducer may be interposed between the gear box 8 and the ground leg 7 to lower the rotational speed of the ground leg.

On the other hand, gear box 8, shaft 91, gear box 1
0. Torque is also transmitted to the mowing blade 12 through the shaft 11, and the mowing blade 12 also starts rotating.

When the grounding leg 7 is rotated once in this way, the grounding leg 7
, rotational friction occurs between the contact surface of the brush cutter and the ground, and the brush cutter slides smoothly on the ground by gently swinging the handle 4 from side to side or slightly tilting the brush cutter by operating the handle, and the mowing blade 12 Weeds can be harvested.

In this way, in the present invention, the main body of the brush cutter is placed on the ground, so the labor burden on the worker is extremely small, and the vibration and noise of the engine that is transmitted to the worker is also extremely small compared to conventional brush cutters. Therefore, you can perform mowing work comfortably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a side view and FIG. 2 being a plan view. 2111, Engine assembly 4111, Handle 5111, Rotation shaft 7111, Ground leg 12
11. Grass cutting blade

Claims (1)

[Claims] A ground-contact type brush cutter, characterized in that a ground-contacting leg is attached to the lower end of a rotating shaft extending downward from a power section, and a mowing blade driven by the power section is provided in front of the ground-contacting leg.