Rolling bearing performance testing device for applying radial alternating loads based on lead screw transmission

Abstract

The invention relates to a rolling bearing performance testing device for applying radial alternating loads based on lead screw transmission. The rolling bearing performance testing device comprises aworking platform, a rotary shaft supporting mechanism, a rotary shaft, a driving motor and a radial alternating load loading unit, the radial alternating load loading unit comprises a loading unit support, a clamping block assembly and a pair of lead screw transmission radial loading mechanisms which are perpendicular to each other and are arranged on the loading unit support, and each lead screwtransmission radial loading mechanism comprises a first rotary motor, a second rotary motor, a first lead screw transmission assembly, a first spring loading assembly, a second lead screw transmission assembly and a second spring loading assembly. Compared with the prior art, the first rotary motors and the second rotary motors can apply radial alternating loads to rolling bearings in the clamping block assembly respectively through the first spring loading assemblies and the second spring loading assemblies to simulate the actual working condition of the mobile-load rolling bearings in an internal combustion engine, and the accuracy and reliability of the rolling bearing performance testing result 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 for applying radial alternating loads based on screw drive. 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 slider-cylinder liner, slider ring-cylinder liner, crankshaft-bearing and cam-tappet. Among them, the crankshaft-bearing includes the main bearing and the connecting rod bearing (because this type of bearing The magnitude and direction of the working load change with time, so it is usually called a dynamic load bearing), which is one of the most critical friction...

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.

Images