Self-rescue speed limiter applied to window cleaning machine winch

Abstract

The invention discloses a self-rescue speed limiter applied to winding of a window-cleaning machine. The self-rescue speed limiter comprises a shell, a rotor arranged in the shell, and end covers arranged at two ends of the shell and used for supporting the rotation of the rotor and limiting the axial movement of the rotor, wherein the rotor comprises a mandrel, throw blocks, friction blocks and compression springs; grooves are arranged in two symmetric sides of the mandrel; the throw blocks are embedded in the grooves of the mandrel; the friction blocks are arranged on the outer sides of thethrow blocks and are connected with the throw blocks; the throw blocks embedded in the symmetric grooves of the mandrel are connected end to end through the compression springs. With the self-rescue speed limiter provided by the invention, the problems that when winding of the window-cleaning machine is in power failure or out of power, during the manual opening of a brake for releasing a gondola,the speed of a gondola operator is difficult to control, if a motor is continuously used for realizing braking, the motor can be burnt due to overheating, are solved.

Description

technical field [0001] The invention belongs to the technical field of high-altitude safety, and in particular relates to a self-rescue speed limiter applied to the winch of a window cleaning machine. Background technique [0002] The window cleaning machine is a kind of manned equipment that hangs the load at high altitude. When there is a fault and the motor power cannot be used for lifting, it is necessary to open the motor brake, lift the gondola and the personnel by manual cranking, and find the nearest window to carry out personnel inspection. Evacuate. Hanging a gondola in mid-air is very dangerous and your best bet is to land or return to the roof of a building. To open the motor brake, it is necessary to rely on the speed limiting mechanism to make the motor rotate at a constant speed without the brake, and hoist the crane and the operator down to the ground safely and smoothly at a constant speed. [0003] When there is a power failure or power failure in the win...

AI Technical Summary

Problems solved by technology

[0003] When there is a power failure or power failure in the winch, the current window cleaning machines produced at home and abroad all use the brakes to be opened, and the operator manually turns the crane to raise or lower the crane. Due to the low speed of the window cleaning machine, the normal working speed is 10m. / min, the maximum increase per minute by manual cranking will not exceed 1m, short distances are still possible, and long distances will easily cause people to be very tired

Therefore, the method of landing is generally adopted, the motor brake is turned on, and the brake is recovered by sliding down for a while by feeling; or the brake is half-opened with friction. The backup brake action will be triggered soon, and the reset is also troublesome

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