Chain saw separation and connection device air-cooling device

Abstract

The invention discloses a chain saw separation and connection device air-cooling device comprising a right box body, a right crank, a holder, shoe blocks, a separation and connection device shell anda brake band. The right crank is installed on the right box body. The holder is fixed to the right crank. The separation and connection device shell is arranged on the right crank. The brake band is arranged on the separation and connection device shell in a sleeving manner. The shoe blocks are correspondingly arranged on the holder, connected with one another through separation and connection device springs and limited in the separation and connection device shell through an outer cover of the separation and connection device shell. Right box air inlet holes are formed in the right box body.An annular flow guide piece is arranged at the bottom of a separation and connection device chamber of the right box body. An annular jet flow passageway is formed by the annular flow guide piece andthe outer wall of the separation and connection device chamber. The outer cover of the separation and connection shell corresponds to the center position of the annular jet flow passageway. An air volume regulation piece is installed on the portion, on the lower portion of the holder, on the right crank. After the structure is adopted, the chain saw separation and connection device air-cooling device has the advantages of being simple and reasonable in structure, good in cooling effect, high in saw cutting efficiency, low in service life and capable of blowing internal sawdust and the like.

Description

technical field [0001] The invention relates to the technical field of two-stroke engine chain saws, in particular to a chain saw clutch air cooling device for cooling and blowing the chain saw clutch. Background technique [0002] The two-stroke engine chain saw is a hand-held power tool for logging and wood cutting. It has the following shortcomings during use: One is the problem of thermal engine startup: that is, under relatively high ambient temperatures, such as summer, after the engine stops For a period of time, there will be a phenomenon that the oil bubbles cannot absorb oil and the engine cannot be started. The second is the problem of clutch wear: that is, due to the frequent combination and separation of the clutch, or the chain jam, etc., there will be high-speed sliding friction, resulting in severe wear of the shoe block and the clutch housing, and fatigue of the clutch spring at high temperature Fracture seriously affects the sawing efficiency and produces ...

AI Technical Summary

Problems solved by technology

[0002] The two-stroke engine chain saw is a hand-held power tool for logging and wood cutting. It has the following shortcomings during use: One is the problem of thermal engine startup: that is, under relatively high ambient temperatures, such as summer, after the engine stops For a period of time, there will be a phenomenon that the oil bubbles cannot absorb oil and the engine cannot be started.

The second is the problem of clutch wear: that is, due to the frequent combination and separation of the clutch, or the chain jam, etc., there will be high-speed sliding friction, resulting in severe wear of the shoe block and the clutch housing, and fatigue of the clutch spring at high temperature Fracture will seriously affect the sawing efficiency and cause safety problems at the same time

The third is the problem of brake belt wear: the brake belt will also cause excessive temperature during frequent braking and fatigue tests, resulting in prolonged braking time, beyond the safe range, and there are potential safety hazards

Fourth, the failure of the worm: Since the worm is generally made of nylon material, when the temperature of the clutch is too high, the high temperature will be transmitted to the worm along the right crank, resulting in a decrease in the strength of the worm, thread damage or direct melting, so that the oil pump cannot work , without lubricating oil, it will further lead to severe wear and failure of the guide plate and chain

For this reason, many scientific research institutes, manufacturers and people of insight are constantly developing and developing, but so far no ideal products have come out.

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