Rolling bearing performance testing device capable of applying radial alternating load based on crank connecting rod

Abstract

The invention relates to a rolling bearing performance testing device capable of applying radial alternating load based on a crank connecting rod. The testing device comprises a workbench, a rotatingshaft supporting mechanism, a rotating shaft, a driving motor and a radial alternating load loading unit. The radial alternating load loading unit consists of a loading unit bracket, a clamping blockassembly and a pair of radial crank connecting rod loading mechanisms being arranged on the loading unit bracket and being perpendicular to each other. The radial crank connecting rod loading mechanisms include first rotary motors, second rotary motors, first crank connecting rod assemblies, first spring loading assemblies, second crank connecting rod assemblies, and second spring loading assemblies. Compared with the prior art, the rolling bearing performance testing device has the following beneficial effects: the first rotary motors and the second rotary motors apply radial alternating loads on a rolling bearing in the clamping block assembly by the first spring loading assemblies and the second spring loading assemblies so as to simulate the real working condition of the dynamic loading rolling bearing in the internal combustion engine, so that the high accuracy and reliability of the performance testing result of the rolling bearing are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and relates to a rolling bearing performance test device based on radial alternating load applied by a crank connecting rod. Background technique [0002] As power equipment, internal combustion engines have been widely used in many industries such as automobiles, ships, aircraft, tanks, railway locomotives, agricultural machinery, construction machinery, generator sets, etc., and occupy a very important position in the national economy. The internal combustion engine includes several pairs of important friction pairs such as piston-cylinder liner, piston ring-cylinder liner, crankshaft-bearing and cam-tappet. Among them, the crankshaft-bearing includes main bearing and connecting rod bearing (due to the working load of this type of bearing The size and direction of the internal combustion engine change with time, so it is usually called a dynamic load bearing), which is one o...

AI Technical Summary

Problems solved by technology

At present, the traditional rolling bearing test device has a single loading characteristic and cannot be loaded with variable loads. In real internal combustion engines, dynamically loaded rolling bearings often work under alternating loads. Therefore, traditional rolling bearing performance test devices cannot carry out internal combustion engine loaded rolling bearing tests.

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