Fist-type disconnecting link contact finger clamping force tester

A clamping force and tester technology, applied in force/torque/work measuring instruments, instruments, measuring devices, etc., can solve the problem of inability to objectively and accurately determine whether the contact clamping degree is qualified, and inability to detect elastic reduction springs, knives, etc. The operation of the brake contact finger is not paid attention to, etc.

Active Publication Date: 2017-08-18
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Fist-type disconnecting link contact finger clamping force tester
  • Fist-type disconnecting link contact finger clamping force tester
  • Fist-type disconnecting link contact finger clamping force tester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of wear-resisting coating that contains organosilicon resin, by weight, is made up of following raw material: ceramic fine powder 4kg, quartz sand 5kg, magnesia 5kg, titanium dioxide 4kg, organic solvent toluene 40kg, tetraethyl orthosilicate 15kg, ring Calcium alkanoate 10kg, graphite powder 1kg, polyethylene glycol 0.1kg, silica sol 5kg and silicone resin 30kg;

[0052] The preparation method of the wear-resistant coating containing silicone resin, comprises the following steps:

[0053] Put 40kg of xylene, 100kg of water and 1kg of nitric acid in a reaction kettle, add dropwise a mixture of 30kg of monofunctional alkoxysilane and 10kg of trifunctional alkoxysilane at a temperature of 50°C, after the addition is complete, heat up to reflux, A mixed solution is obtained; the monofunctional alkoxysilane is hexamethyldisiloxane; the trifunctional alkoxysilane is vinyltrimethoxysilane;

[0054] ② the steps The obtained mixed solution was allowed to stand and c...

Embodiment 2

[0059] A kind of wear-resisting coating that contains organosilicon resin, by weight, is made up of the following raw materials: ceramic micropowder 7kg, quartz sand 10kg, magnesia 8kg, titanium dioxide 7kg, organic solvent xylene 50kg, tetraethyl orthosilicate 20kg, Calcium naphthenate 15kg, graphite powder 5kg, polyethylene glycol 0.5kg, silica sol 8kg and silicone resin 40kg;

[0060] The preparation method of the wear-resistant coating containing silicone resin, comprises the following steps:

[0061] Put 60kg of xylene, 120kg of water and 5kg of nitric acid in a reaction kettle, add dropwise a mixture of 50kg of monofunctional alkoxysilane and 20kg of trifunctional alkoxysilane at a temperature of 60°C, after the addition is complete, heat up to reflux, A mixed solution is obtained; the monofunctional alkoxysilane is methyldiphenylmethoxysilane; the trifunctional alkoxysilane is vinyltriethoxysilane;

[0062] ② the steps The obtained mixed solution was allowed to sta...

Embodiment 3

[0067] A kind of wear-resisting coating that contains organosilicon resin, by weight, is made up of the following raw materials: Ceramic micropowder 5kg, quartz sand 6kg, magnesia 7kg, titanium dioxide 5kg, organic solvent 42kg, tetraethyl orthosilicate 18kg, naphthene Calcium acid 12kg, graphite powder 3kg, polyethylene glycol 0.4kg, silica sol 6kg and organosilicon resin 32kg; Described organic solvent is tetrahydrofuran;

[0068] The preparation method of the wear-resistant coating containing silicone resin, comprises the following steps:

[0069] Put 44kg of xylene, 115kg of water and 2kg of nitric acid in a reaction kettle, add dropwise a mixture of 35kg of monofunctional alkoxysilane and 16kg of trifunctional alkoxysilane at a temperature of 52°C, after the addition is complete, heat up to reflux, A mixed solution is obtained; the monofunctional alkoxysilane is hexamethyldisiloxane; the trifunctional alkoxysilane is vinyltriethoxysilane;

[0070] ② the steps The obt...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00C09D183/04C09D7/12C09D7/00
CPCC08K2201/014C09D7/20C09D7/61C09D7/63C09D7/65C09D183/04G01L5/00C08L71/02C08K13/02C08K3/36C08K2003/222C08K2003/2241C08K5/098C08K3/04
Inventor 肖英伟任庆帅侯方洁韩立忠刘玉海冯迎春刘丙伟张雷孙兆国华涛逯文佳井巍范婷韩翊沈潇涵于莎王珏明谭晓翠
Owner STATE GRID CORP OF CHINA
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