Synchronous-belt-transmission-mechanism-based alternating load loading device for bearing testing machine

Abstract

The invention relates to a synchronous-belt-transmission-mechanism-based alternating load loading device for a bearing testing machine. The bearing testing machine includes a rotating shaft (1); and atested bearing (2) is installed on the rotating shaft (1). The loading device comprises a clamp (3) and a plurality of rotary motor-synchronous belt transmission mechanism-spring assemblies arrangedaround the clamp (3); the synchronous belt transmission mechanisms include transmission wheels, synchronous belts (52), and connection blocks (54); the transmission wheels are connected with the rotary motors; the synchronous belts (52) are connected with the transmission wheels and the connection blocks (54); and the connection blocks (54) are connected with springs. The rotary motors drive the synchronous belt transmission mechanisms to move to control the spring deformation, so that an alternating load is applied to the tested bearing (2) in the clamp (3). Compared with the prior art, the synchronous-belt-transmission-mechanism-based alternating load loading device is capable of realizing the real working condition load of the internal combustion engine and the like.

Description

technical field [0001] The invention relates to a load device for a bearing testing machine, in particular to an alternating load loading device for a bearing testing machine based on a synchronous belt transmission mechanism. 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...

AI Technical Summary

Problems solved by technology

At present, the loading characteristics of the traditional bearing test device are single, and the loading of variable loads cannot be realized. In the real internal combustion engine, the dynamic load bearing is often under alternating load, so it is difficult for the traditional bearing test loading device to realize the alternating load of the dynamic load bearing of the engine. load

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