Brush Friction Coefficient Test Bench and Its Measuring Method

A friction coefficient, test bench technology, applied in measuring devices, instruments, mechanical devices, etc., can solve problems such as low measurement accuracy, and achieve the effects of strong anti-interference ability, simple and convenient operation, and scientific and reasonable structure

Active Publication Date: 2016-05-04
严格集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current device and method for measuring the dynamic friction coefficient have low measurement accuracy of the brush dynamic friction coefficient under high-speed conditions. The present invention provides a brush friction coefficient test bench and its measurement method

Method used

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  • Brush Friction Coefficient Test Bench and Its Measuring Method
  • Brush Friction Coefficient Test Bench and Its Measuring Method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0030] Specific implementation mode one: combine figure 1 Describe this embodiment, the brush friction coefficient test bench described in this embodiment, the test bench includes a test tool and a control system;

[0031] The test tooling includes a support base 1, a torque sensor 2, a lever lever 3, a pressure sensor 4, a brush mounting tool 5, a copper inlaid turntable 6, a radial bearing 7 and a drag motor 8;

[0032] The test bench support seat 1 is a three-layer support seat, and a torque sensor 2 is arranged on the top layer of the test bench support seat 1, and the output shaft 2-1 of the torque sensor 2 is vertically connected with the top of the arm bar 3, and the arm bar The bottom end of 3 is fixedly connected with the upper surface of pressure sensor 4,

[0033] The brush mounting tool 5 is divided into an upper part and a lower part, and the upper part and the lower part are connected by threads; the lower surface of the pressure sensor 4 is fixedly connected wi...

specific Embodiment approach 2

[0041] Specific implementation mode two: combination figure 2 This embodiment is described. This embodiment is a further limitation of the brush friction coefficient test bench described in Embodiment 1. The control system includes a torque signal test unit, a positive pressure signal test unit, a signal acquisition and conditioning unit, and a control system. and processing unit and communication unit;

[0042] a torque signal testing unit, configured to receive the torque signal measured by the torque sensor 2;

[0043] A positive pressure signal testing unit, configured to receive the positive pressure signal measured by the pressure sensor 4;

[0044] The signal acquisition and conditioning unit is used to sample the received torque signal and positive pressure signal, condition the sampled signal, and send it to the control and processing unit;

[0045] The control and processing unit is used to control the rotation of the dragging motor 8, and is also used to select a...

specific Embodiment approach 3

[0048] Embodiment 3: This embodiment is a further limitation of the brush friction coefficient test bench described in Embodiment 3, and the torque sensor 2 is realized by a loaded dynamometer.

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Abstract

The invention discloses a test bed and a measurement method for measuring the friction coefficient of an electric brush, relates to a friction coefficient measurement device and method, and aims to solve the problem of low measurement accuracy of a dynamic friction coefficient of an electric brush under a high-speed condition during conventional measurement. The test bed comprises a test tool and a control system, wherein the test tool is perpendicularly connected with a pressure sensor through a force arm rod by a torque sensor; the pressure sensor is connected with an electric brush clamping tool and the tested electric brush in the electric brush clamping tool; the electric brush clamping tool is arranged on the upper part of a copper-embedded turntable; a dragging motor drives the copper-embedded turntable to rotate; the upper part and the lower part of the electric brush clamping tool are in threaded connection with each other; the force arm rod is a telescopic force arm rod; the control system enables the dragging motor to rotate to acquire signals of the pressure sensor and the torque sensor; during measurement, the electric brush is in contact with the copper-embedded turntable, a thread and the force arm rod are adjusted, and the reading of the pressure sensor is in a ruled range; the control system calculates a friction coefficient of the tested electric brush according to measured data. The test bed is used for measuring the dynamic friction coefficient of the electric brush under a high-speed condition.

Description

technical field [0001] The invention relates to a friction coefficient measuring device and a measuring method thereof, in particular to a brush friction coefficient testing platform and a measuring method thereof. Background technique [0002] A brush is a conductive component that makes sliding contact with a moving part to form an electrical connection. The brush is used on the commutator or slip ring as a sliding contact body for importing and exporting current. It has good electrical conductivity, thermal conductivity and lubricating properties, and has certain mechanical strength and reversible spark instinct. Almost all DC motors, as well as commutated motors, use brushes, which are an important part of the motor. Since the brushed DC motor requires good lubricity, the friction coefficient of the brush is an important parameter for the performance of the brush. [0003] At present, the measurement of the friction coefficient is mainly carried out by measuring the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/02
Inventor 关宇东丁焱于博良提纯利仲小挺杜克宁宇朱雨桐徐志剑
Owner 严格集团股份有限公司
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