Measuring device for mechanical travel of high-voltage switchgear

Abstract

The invention discloses a measuring device for the mechanical stroke of a high-voltage switch cabinet. The measuring device comprises a main ruler, an auxiliary ruler and a measurement stroke adjusting assembly, the main ruler and the auxiliary ruler are matched in a sliding manner, a first measuring head and a main dial are arranged on the main ruler, a second measuring head and an auxiliary dial are arranged on the auxiliary ruler, the main dial and the auxiliary dial are adjacently arranged, the first measuring head and the second measuring head are parallelly arranged, one end of the main ruler is provided with a first hinged seat, one end of the auxiliary ruler is provided with a second hinged seat, the measurement stroke adjusting assembly includes a first movable adjusting arm and a second movable adjusting arm whose middle parts are hinged through a screw fastener, the front end of the first movable adjusting arm is connected with the first hinged seat in a hinged manner, and the front end of the second movable adjusting arm is connected with the second hinged seat in a hinged manner. The measuring device for the mechanical stroke of the high-voltage switch cabinet can conveniently complete measurement of a switch, the mechanical stroke and the overstroke of a high-voltage circuit breaker in the high voltage switch cabinet, and has the advantages of being high in test precision, small in size and portable, convenient to operate, and simple in structure.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a measuring device for the mechanical travel of a high-voltage switchgear. Background technique [0002] The reliability of high-voltage switchgear depends to a large extent on the reliability of its mechanical operating system, especially the stroke, contact stroke, opening and closing speed, time, three-phase opening and closing synchronism, and closing of the circuit breaker in the high-voltage switchgear. Brake contact bounce time, etc. At present, after the high-voltage switchgear is installed on site, it is generally necessary to measure and adjust the mechanical travel and over-travel of the switch and high-voltage circuit breaker. drop, the thrust spring is easy to age, etc. At present, vernier calipers are generally used as measuring devices for the mechanical travel of high-voltage switchgear. However, when the current vernier caliper is used to measure the mechanic...

AI Technical Summary

Problems solved by technology

However, when the current vernier caliper is used to measure the mechanical stroke and overtravel of the switch of the high-voltage switchgear, the high-voltage circuit breaker, there are the following deficiencies: 1. The door of the high-voltage switchgear is very narrow and difficult to enter. It is more difficult to reach in, and it is very difficult to complete the measurement of travel and over-travel; 2. The travel measurement space provided by the high-voltage circuit breaker is very small. For ordinary vernier calipers, the length of the main scale is too long. It is difficult to place in the stroke measurement space, which may easily cause measurement errors

3. The ordinary vernier caliper has no supporting point when it is placed in the stroke measurement space of the high-voltage circuit breaker, and the operation is very difficult, resulting in time-consuming and laborious measurement work, and the measurement result has a large error

Images