Bearing test device capable of loading alternating loads based on rack and pinion transmission mechanism

Abstract

The invention relates to a bearing test device capable of loading alternating loads based on a rack and pinion transmission mechanism. The device comprises a computer and a driving motor connected with the computer; an output shaft of the driving motor is connected with a rotating shaft through a shaft coupling device; a bearing to be detected is arranged outside the rotating shaft in a sleeving manner; the detected to be detected bearing is provided with an alternating load loading assembly which consists of rotating electric motors that are arranged symmetrically up and down, the rack and pinion transmission mechanism connected to the rotating electric motors, a spring connected to the transmission mechanism and a connection mechanism arranged at a tail end of the spring; the connectionmechanism is connected to the bearing to be detected via a movable clamp. Compared with technologies of the prior art, the bearing test device is advantageous in that a rotation angle of the rotatingelectric motor is controlled via a computer, and the alternating load loading assembly is used for changing a stretching / compression amount of the spring so as to control the elastic force of the spring, and alternating load loading of the bearing can be realized.

Description

technical field [0001] The invention relates to a bearing testing device, in particular to a bearing testing device based on a rack and pinion transmission mechanism capable of loading alternating loads. Background technique [0002] Internal combustion engines are widely used in automobiles, ships, airplanes, tanks, railway locomotives, agricultural machinery, construction machinery, generator sets and other industries. As power equipment, they occupy a very important position in the national economy. The internal combustion engine includes several important friction pairs such as piston-cylinder liner, piston ring-cylinder liner, crankshaft-bearing and cam-tappet. Among them, the crankshaft bearing, including the main bearing and the 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 of the most critical friction pair...

AI Technical Summary

Problems solved by technology

At present, the traditional bearing test device has a single loading characteristic and cannot realize variable load loading. In real internal combustion engines, the dynamic load bearing is often under alternating loads, so it is difficult for the traditional bearing test device to carry out the test of the dynamic load bearing of the engine.

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