Screw rod transmission-based rolling bearing performance test device capable of loading alternating load

Abstract

The invention relates to a screw rod transmission-based rolling bearing performance test device capable of loading an alternating load. The device comprises a working table, a rotating shaft supporting mechanism, a rotating shaft, a driving motor and an alternating load loading unit, wherein the alternating load loading unit comprises a clamping block assembly, a first rotating motor and a secondrotating motor; a first screw rod transmission loading mechanism is arranged between the first rotating motor and the clamping block assembly; a second screw rod transmission loading mechanism is arranged between the second rotating motor and the clamping block assembly. Compared with the prior art, the screw rod transmission-based rolling bearing performance test device disclosed by the inventionhas the advantages that the first rotating motor and the second rotating motor in the screw rod transmission-based rolling bearing performance test device can load an alternating load to a rolling bearing in the clamping block assembly through the first screw rod transmission loading mechanism and the second screw rod transmission loading mechanism to simulate a real working condition of a dynamic load rolling bearing in an internal combustion engine, so that the accuracy and the reliability of a rolling bearing performance test 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 capable of loading 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.

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