Static friction force testing system for elevator speed limiter

Abstract

The invention relates to a static friction force testing system for an elevator speed limiter. The system comprises a support frame, a wire rope, a fixed station arranged on the support frame and usedto install the speed limiter, a traction wheel assembly for guiding the wire rope and a driving mechanism for driving the wire rope to move; the wire rope is wound around a rope wheel of the speed limiter, the traction wheel assembly and the driving mechanism successively; the two ends of the wire rope are fixed by a locking mechanism and form a closed loop; and a pressure sensor is arranged between the bottom of the fixed station and the support frame, and is connected with an external data collection unit. Compared with the prior art, a device high in efficiency and convenient to use is provided for testing the static friction force of the speed limiter, the condition of the elevator speed limiter in the practical using process can be simulated, a servo motor is used for power driving,the test speed can be controlled accurately, operation is stable and reliable, and the tension of the wire rope can be adjusted according to test needs by arranging a telescoping cylinder and a guiderail on a horizontal traction wheel.

Description

Technical field [0001] The invention relates to an elevator speed limiter test equipment, in particular to a static friction test system for an elevator speed limiter. Background technique [0002] The elevator speed limiter is the safety protection device of the elevator. It monitors and controls the speed of the car at any time. When an overspeed situation occurs, that is, when the rated speed of the elevator is 115%, it can send a signal in time, and then generate a mechanical action to cut off the power supply circuit. Brake the traction machine. If the elevator still cannot brake, the safety gear installed at the bottom of the car will force the car to stop. The speed limiter and the speed limiter rope need to have a proper static friction force. If the friction value is too small or the force value is too large, it is easy to cause the elevator to malfunction or brake failure under emergency braking. Therefore, the elevator speed limit During the manufacturing process of ...

AI Technical Summary

Problems solved by technology

There needs to be a suitable static friction between the speed limiter and the speed limiter rope. If the friction value is too small or too large, it will easily cause the elevator to malfunction or brake in an emergency. Therefore, in the elevator speed limit During the production and manufacturing process of the elevator speed governor, it is necessary to conduct a preliminary test on the static friction of the elevator speed limiter to ensure the safe and smooth operation of the elevator. However, there is currently a lack of such test equipment, or the test device is not convenient and accurate enough to use.

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