Synchronous-belt-transmission-mechanism-based bearing test device capable of loading alternating load

Abstract

The invention relates to a synchronous-belt-transmission-mechanism-based bearing test device capable of loading an alternating load. The bearing test device is composed of a computer and a driving motor connected by the computer. An output shaft of the driving motor is connected to a rotating shaft through a coupler; and a detected sliding bearing sleeves the outside of the rotating shaft and consists of a bearing base and a bearing bush being embedded into bearing base and having a smooth inner side. An alternating load loading assembly is arranged on the detected bearing and consists of rotary motors arranged in an up-down symmetric manner, synchronous belt transmission mechanisms connected with the rotary motors, springs connected with the transmission mechanisms, and connecting mechanisms arranged at the tail ends of the springs; and the connecting mechanisms are connected with the detected bearing by moving clamps. The synchronous belt transmission mechanisms include driving wheels, driven wheels, and sliding blocks. According to the invention, the elastic force of the spring is controlled by changing the compression/stretching amount of the spring, so that the loading of thealternating load of the bearing is realized.

Description

technical field [0001] The invention relates to a bearing load testing device, in particular to a bearing testing device based on a synchronous belt 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 frictio...

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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