Crank-connecting-rod-mechanism-based alternating load loading device for bearing testing machine

Abstract

The invention relates to a crank-connecting-rod-mechanism-based alternating load loading device for a bearing testing machine. The bearing testing machine is composed of a rotating shaft (1); and a tested bearing (2) is installed at the rotating shaft (1). The crank-connecting-rod-mechanism-based alternating load loading device is characterized in that the loading device comprises a clamp (3) anda plurality of rotary motor-crank-connecting-rod-mechanism-spring assemblies arranged around the clamp (3). All rotary motor-crank-connecting-rod-mechanism-spring assemblies include rotary motors, crank-connecting-rod mechanisms, and springs, wherein the units are connected successively; the crank-connecting-rod mechanisms include flywheels (51), connecting rods (52) and connecting blocks (53); and the rotary motors drive the crank-connecting-rod mechanisms to move to control the springs to make stretching or compression deformation, thereby applying an alternating load on the tested bearing (2) in the clamp (3). Compared with the prior art, the crank-connecting-rod-mechanism-based alternating load loading device has the advantage of being capable of realizing the real working condition load of the internal combustion engine.

Description

technical field [0001] The invention relates to a loading device for a bearing testing machine, in particular to an alternating load loading device for a bearing testing machine based on a crank connecting rod 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 criti...

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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