Flexible loading system of friction and wear testing machine

Abstract

The invention relates to a flexible loading system of a friction and wear testing machine. The system is characterized in that: a loading oil cylinder is horizontally arranged, a piston rod passes through a body of the loading oil cylinder, a displacement sensor is arranged on one end of the piston rod, a load sensor is connected with the other end of the piston rod, a housing of the displacementsensor is fixed on a frame, and a measurement iron core is connected with the load sensor by passing through the piston rod; a friction pin is arranged on the load sensor, a friction disc and the friction pin are relatively arranged, and the friction disc is connected with a variable frequency motor through a driving shaft and a torque sensor; the loading oil cylinder is communicated with a hydraulic system through a servo valve, the displacement sensor and the load sensor are connected with a servo controller, and the servo controller is connected with the servo valve; and a guide rod is arranged in parallel with the load oil cylinder, and the load sensor is fixedly connected with a slide block of the guide rod. The system allows the labor intensity of operators to be reduced, the load value to be continuously variable, stepless loading of loads to be realized, impact problems of loading of original systems to be solved, and the loading stability to be substantially raised.

Description

technical field [0001] The invention relates to an electro-hydraulic servo automatic control system of a friction and wear testing machine, in particular to a loading system for the friction and wear testing machine. Background technique [0002] The loading system of the existing friction and wear testing machine mostly uses a combination of weights, levers and spring buffer devices. The loading force value is adjusted by weights and levers. When the friction surface is uneven, the vibration of the force value is absorbed by the spring. The advantage of this method is that the quality of the weight is constant and does not change with environmental changes such as time, temperature, and humidity. Its disadvantage is that when the load is changed, when the weight is increased or decreased, there will be an impact on the force value, and this device cannot realize the stepless change of the load, and the load pop cannot be realized during the test. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the deficiencies of the existing technical problems, provide an electro-hydraulic servo automation control scheme for friction and wear testing, improve the existing loading method, and solve the problems that the existing system cannot be loaded steplessly and the load pops

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