Rolling and friction composite testing machine

Abstract

The invention is a kind of testing machine which combines rolling and friction, the driving electric motor is connected with speed reducing box, big wheel with the same shaft through coupler, and carries on speed adjusting through the converter in control box, there set friction piece loading device and rolling piece loading device on the bracket at two side of the big wheel respectively, the load of friction piece realizes constant load experience through lever weights, the friction piece is locked with clamper, the weight of the weights fixes the pulling point at the tail part of the lever through guiding wheel by the steel cable, and it is supported by the lever supporting point, the vertical load is changed into the positive pressure of the tested friction piece, the size of the load is adjusted by the weights and the suspending point of the weights. The loading device of rolling piece realizes the constant load experience with the lever weights system. The invention can realize the character of constant load, the structure is simple, the load is stable. It has compound testing function.

Description

Technical field: [0001] The invention relates to a variable-speed rolling and friction composite testing machine, which drives a motor to adjust the speed through a frequency converter to drive a large runner to contact with friction parts and rolling parts. Life test of friction parts, constant load test device with composite test function. Background technique: [0002] Rolling parts and friction parts are frequently used parts in mechanical operation. Since they are wearing parts, their life is a very important indicator. Usually these moving parts are inspected for life in actual use. However, sometimes in order to verify the life of trial products or measure the life of friction parts or rolling parts before mass production, it is necessary to conduct environmental stress tests on specific test devices to investigate their operating performance and life. [0003] Usually, during the rolling element test, the rolling element is driven by the dual element, and the load...

AI Technical Summary

Problems solved by technology

Although the hydraulic loading system can automatically compensate the load, the cost of the hydraulic loading system is high, the energy consumption is large, and the hydraulic system is polluted by oil. In addition, only by using a high-precision force or displacement compensation system to continuously track pressure changes can the test process be achieved. stable load

[0004] When the friction parts are used for the dual friction test, the general test device is suitable for small test pieces, and it also has the above-mentioned shortcomings when spring and hydraulic loading are used.

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