High/low-temperature impact life testing device especially for bearing

Abstract

The invention discloses a special high and low temperature impact life test device for bearings. The device adopts a three-layer structure including a heat storage area, a test area and a cold storage area. The belt-driven gear train mechanism is installed in the test area, and the life test of multiple sets of bearings can be carried out at the same time. The temperature of the test area is adjusted by a control system composed of circulating air holes, regulating valves, temperature sensors and control circuits connected to the heat storage area and the cold storage area respectively, and the temperature control of the test area is realized through the circulation mechanism of cold and hot air. , in order to achieve the purpose of simulating the actual temperature change of the bearing. The tensioning wheel adjustment mechanism arranged outside the test area compensates for the load change of the belt drive system caused by the temperature change in the test area, so that the tested bearing maintains a constant load.

Description

technical field [0001] The invention relates to a high and low temperature impact test device for bearings, in particular to a special high and low temperature impact life test device for bearings. Background technique [0002] Bearings are widely used basic components in mechanical products and play a vital role in ensuring product quality. According to statistics, in rotating machinery using rolling bearings, about 30% of mechanical failures are caused by bearing failure. For this reason, people have paid more and more attention to the quality and reliability of bearings, and put the life test and evaluation of bearings on the agenda, especially for some bearings working in harsh environments, the life test has become the key point of quality control. An essential and important link. [0003] However, according to the survey, it is found that the development of bearing life test equipment is relatively lagging behind. At present, only some bearing life tests in conventio...

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Problems solved by technology

[0003] However, according to the survey, it is found that the development of bearing life test equipment is relatively lagging behind. At present, only some bearing life tests in conventional environments can be carried out, and some bearings that work in harsh environments and have a significant impact on product quality (such as automobile bearings, etc.) ) There is still a lack of effective test methods and test equipment for life tests in extreme environments. At present, there is no high and low temperature impact test equipment specifically for bearings on the market

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