Fist-type disconnecting link contact finger clamping force tester

Abstract

The invention relates to a fist-type disconnecting link contact finger clamping force tester. The fist-type disconnecting link contact finger clamping force tester comprises a pincer handle seat; the pincer handle seat is symmetrically provided with two pincer handles; the middle of each of the pincer handle is hinged to the pincer handle seat through a hinging shaft; the front end of each of the pincer handles is hinged to a hinge seat; each of the hinge seats is provided with a jaw pad; a pressure sensor is arranged between each jaw pad and the corresponding hinge seat, the jaw pads are located at the outer sides of the pincer handles; a sliding plate and a fixed plate are slidably connected with each other through a dovetail groove so as to form each jaw pad; the outer surface of each of the sliding plates is provided with an anti-slip wear-resistance layer; and the pressure sensors are connected with a pressure detector through a wire. According to the fist-type disconnecting link contact finger clamping force tester, the pincer-type test device which can be operated by a single hand is adopted to turn a pair of contact fingers to be tested apart, and the pressure sensors are adopted to collect pressure signals, and therefore, the pressure of the contact fingers of a disconnecting link can be directly measured, the degree of health of the contact fingers can be detected, and therefore, corresponding accidents can be avoided.

Description

technical field [0001] The invention relates to a finger clamping force tester, in particular to a fist-type knife switch finger clamping force tester. Background technique [0002] like image 3 As shown, the main conductive part of the fist-type knife switch is composed of a door-shaped contact and a fist-shaped contact. The two parts are tightly fitted to realize the function of conducting the circuit. When the fist-type knife switch is closed, the contact surface of the door-type contact finger and the fist-type contact will be electrically charged. The gate contact of the fist knife switch generally has 4-5 pairs of contact fingers, such as image 3 shown on the right. Two sets of contact finger springs are installed between each pair of contact fingers to provide pressure for the contact fingers, so as to realize the close contact and good conduction of the contacts when the knife switch is closed. [0003] Because the finger springs that provide pressure will experi...

AI Technical Summary

Problems solved by technology

[0006] 1. The loop resistance measurement is the sum of the resistance of the entire conductive circuit of the knife switch, including the conductive wall, clamping plate and other parts, which cannot directly reflect the change of contact resistance between each finger of the knife switch and the fist-shaped contact, so it cannot be directly Determine whether the clamping degree of each finger is qualified;

[0007] 2. Due to differences in work experience and technical level, some maintenance personnel cannot check out the spring with reduced elasticity, nor can they objectively and accurately determine whether the clamping degree of the contact is qualified

[0008] At present, most domestic knife switch manufacturers only test the spring tension of the knife switch finger springs at the factory, and do not pay attention to the operation of the knife switch finger after installation.

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