Bearing test device capable of applying radial alternating load based on lead screw transmission mechanism

Abstract

The invention relates to a bearing test device capable of applying radial alternating load based on a lead screw transmission mechanism. The bearing test device comprises a computer which is connectedwith a driving motor. The output shaft of the driving motor is connected with a rotating shaft through a coupler. The rotating shaft is externally sleeved by a detected bearing which is a sliding bearing. The bearing test device also comprises a radial alternating load loading module which is arranged on the detected bearing. The radial alternating load loading module comprises a temperature sensor which is arranged on the detected bearing and loading parts which are arranged on the external side of the detected bearing and symmetrical in the four directions. Each loading part comprises a rotating motor, the lead screw transmission mechanism which is connected with the rotating motor, a spring which is connected with the lead screw transmission mechanism and a connecting mechanism which is connected with the other end of the spring. Compared with the devices in the prior art, loading of the alternating load of four directions and two radial directions on 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 screw drive mechanism capable of applying radial 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 pairs of the ...

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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