Bush cutter working head connection structure

Abstract

The invention discloses a bush cutter working head connection structure which comprises a gear box, an output shaft, a support block, a blade, a pressing plate, a protective cover, a nut and the like.The bush cutter working head connection structure is technically characterized in that the pressing plate and the protective cover are designed into an integrated structure, so that the integrated pressing plate and protective cover are quite conveniently and flexibly mounted after the blade is mounted on the output shaft of the gear box. Besides, the protective cover rotates relative to the pressing plate through a fixedly mounted bearing. When a working head works, once the protective cover accidentally hits an obstacle, the protective cover can be prevented from bump and fracture by relative rotation, so that the protective cover can be prepared from light materials such as lighter plastics, easy use of an operator is greatly facilitated, and the improved working head has the advantages of high working efficiency, long service life, convenience in disassembly and replacement, labor-saving property and the like.

Description

technical field [0001] The invention relates to a connection structure of a working head of a landscaping machine, in particular to a connection structure of a working head of a brush cutter. Background technique [0002] Brush cutters are mainly used to remove weeds in lawns, orchards, hillsides, and green belts on both sides of the road. The working head of the brush cutter is the most important working part of the brush cutter. The connection structure of the working head is good or bad. It often affects the performance of the brush cutter. Therefore, designing a better working head of the brush cutter can greatly improve the working efficiency and service life of the brush cutter. The working head of the brush cutter currently used is as follows: Figure 4 As shown, it is mainly composed of a gearbox 1 and a bracket 3, a blade 4, a pressure plate 8, a shield 5, and a flange nut 6 connected in series on the output shaft 2 of the gearbox in sequence. The bracket 3 and the ...

AI Technical Summary

Problems solved by technology

Therefore, after the blade is installed, it is very inconvenient to install the pressure plate and the shield. For example, the disassembly and replacement of the traditional working head usually needs to rotate the working head to disassemble and assemble various parts smoothly, otherwise it will be very troublesome and laborious.

At the same time, the nut is tightly pressed between the guard and the output shaft to rotate synchronously. Once the guard hits an obstacle, it is often impossible to form a relative rotation. The guard made of light plastic is easy to bump and break. In order to solve the above problems, The current manufacturers can only make the shield with metal materials that are not easy to bump, which also greatly increases the weight of the working head, and the operator is very difficult to use

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