Cable twist-off preventing device of small-sized wind power generator

Abstract

The invention relates to a cable twist-off preventing device of a small-sized wind power generator. The cable twist-off preventing device comprises an upright post support, a power generator which is installed on the upper end of the upright post support and a resetting mechanism, wherein one end of a cable is connected with the power generator, the other end of the cable is arranged on a supporting shaft in a penetrating way which is vertically arranged inside an upright tube on the lower part of the upright post support, a winding reel assembly is sleeved on the supporting shaft, the winding reel assembly is provided with a positioning block, the supporting shaft is provided with a positioning screw, the resetting mechanism comprises a shell, a steel wire and a pullback spring, the shell is horizontally arranged at one side of a supporting shaft shell, one end of the steel wire is arranged on the winding reel assembly, the other end of the steel wire is connected with the pullback spring which is arranged inside the shell, and the other end of the pullback spring is connected with an end cover on one end of the shell. The cable twist-off preventing device has a simple structure and low production cost, the phenomenon that the cable is twisted off can be effectively prevented, and the problem of the electric arc burning loss when an electric brush slide ring is adopted under the condition of heavy wind can be solved.

Description

technical field [0001] The invention relates to the field of mechanical equipment safety, in particular to a device for preventing cable twisting of a small wind power generator. Background technique [0002] In the natural environment, since the natural wind direction changes randomly, in order to make full use of wind energy at any time, the wind blades of the wind generator automatically adjust the windward direction. At present, most small wind generators use conductive rings to solve the problem of winding and twisting of the outgoing cables. Due to natural The sudden change of wind direction and wind speed causes strong vibration of the wind turbine, and the slow recovery of the elastic force of the spring leads to poor contact between the brush and the electric slip ring, which leads to ignition and burnout, which affects the normal operation of the wind turbine. [0003] The slip ring assembly (the slip ring is connected with the three-phase lead-out wire) and ...

AI Technical Summary

Problems solved by technology

[0004] However, when there is strong wind and the wind direction is extremely unstable, it will cause strong vibration of the generator. Once the contact surface between the brush and the slip ring is not in good contact, and the elastic force of the spring cannot be restored in time, it will occur in a short time. Arcing, the insulation material of brushes and slip rings will be burned, resulting in a short circuit of the generator, which will cause the wind turbine to fail

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