Device for testing mechanical characteristics of circuit breaker

Abstract

The invention discloses a device for testing the mechanical characteristics of a circuit breaker. The device for testing the mechanical characteristics of the circuit breaker comprises a connecting frame and a linear displacement sensor, wherein the connecting frame is used for being fixedly connected with a moving contact pull rod of the circuit breaker so that the connecting frame can be driven by the moving contact pull rod to move in the stretching and retracting directions of the moving contact pull rod, and the linear displacement sensor is provided with a signal input rod which is fixedly connected with the connecting frame. The device for testing the mechanical characteristics of the circuit breaker further comprises a guide frame, wherein the guide frame is used for being fixedly arranged on a fixing support of the circuit breaker, a limiting rail is arranged on the guide frame, and the limiting rail is used for movement guiding matching with the connecting frame in the stretching and retracting directions of the moving contact pull rod and rotation stopping and limiting matching in the circumferential direction of the moving contact pull rod. Under the guiding action and the limiting action of the guide frame, the connecting frame which is connected with the moving contact pull rod and the signal input rod of the linear displacement sensor in a transmission mode can only move in a guided mode in the stretching and retracting directions of the moving contact pull rod and cannot rotate in the circumferential direction of the moving contact pull rod, and therefore the problem that the linear displacement sensor is damaged due to rotation of the moving contact pull rod is avoided.

Description

technical field [0001] The invention relates to a circuit breaker mechanical characteristic testing device. Background technique [0002] The measurement of the mechanical characteristics of the circuit breaker is one of the important means to measure and guarantee the quality and performance indicators of the circuit breaker. In the type test, factory test and field handover test, the measurement of the mechanical characteristics is required to ensure the normal operation of the circuit breaker. [0003] In the Chinese utility model patent with the authorized announcement number CN202066668U, a circuit breaker mechanical characteristic testing device is disclosed. A connecting frame is fixedly connected to the moving contact pull rod, and the connecting frame is fixedly connected to the input end of the displacement sensor at the same time. When testing mechanical characteristics, the moving contact rod is driven by the operating mechanism to reciprocate along the extension...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a circuit breaker mechanical characteristic test device to solve the technical problem that the linear displacement sensor in the test device in the prior art is easily damaged by the moving contact pull rod that rotates in the circumferential direction

Images