Rack-and-pinion-transmission-based bearing test device capable of applying radial alternating load

Abstract

The invention relates to a rack-and-pinion-transmission-based bearing test device capable of applying a radial alternating load. The bearing test device is composed of a computer and a drive motor connected to a computer; and an output shaft of the drive motor is connected with a rotary shaft through a coupling. A detected bearing sleeves the outside of the rotary shaft. A radial alternating loadloading module arranged at the detected bearing consists of a temperature sensor arranged at the detected bearing and loading parts being arranged at the outer side of the detected bearing and being symmetric in four directions; and the loading parts include rotary motors, rack-and-pinion transmission mechanisms connected with the rotary motors, springs connected with the rack-and-pinion transmission mechanisms, and connecting mechanisms connected to the other ends of the springs. Compared with the prior art, the rack-and-pinion-transmission-based bearing test device has the following beneficial effect: alternating load loading of the bearing in four directions and two radial directions is realized.

Description

technical field [0001] The invention relates to a bearing testing device, in particular to a bearing testing device based on rack and pinion transmission that can apply 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 ...

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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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