Loading mechanism of mute life testing machine of rolling bearing

Abstract

The invention relates to a loading mechanism of a mute life testing machine of a rolling bearing. The loading mechanism comprises a sliding plate, a base, a front guide block, a rear guide block, a loading rod, a loading spring, a feeding mechanism, a fastening screw, a load column and a load disc, wherein the base is used for supporting the sliding plate to slide; the front guide plate and the rear guide plate are fixed on the sliding plate; the loading rod penetrates through the front guide block and the rear guide block; the loading spring is sleeved on the loading rod; the feeding mechanism which is used for driving the sliding plate to move axially along the loading rod; the fastening screw is used for fastening an axial position of the sliding plate; the load column is used for propping against an end face of an outer ring of the rolling bearing to be tested; the load disc is used for connecting the loading rod with the load column; a preloading nut is in thread connection at the middle part of the loading rod; the loading spring is propped between the preloading nut and the rear guide block; a front end of the loading rod props against a rear end of the load disc; and a front end of the load disc is used for propping against the end face of the outer ring of the rolling bearing to be tested through the load column. The loading mechanism has the advantages that: the mute life testing machine of the rolling bearing is stable and reliable in testing load, the load has a function of self-aligning, and the end face of the outer ring of the rolling bearing to be tested is uniformly loaded without unbalance loading.

Description

technical field [0001] The invention relates to a loading mechanism of a silent life testing machine for rolling bearings. Background technique [0002] Since the Second World War, rolling bearing vibration measurement equipment has come out continuously, such as the B1010 Andrew meter of the American Bendix company, the MGG11 rolling bearing vibration measuring instrument of the German FAG company, the S0910 rolling bearing vibration acceleration measuring instrument developed by the Luoyang Bearing Research Institute and the Hangzhou Bearing Test Research Center. BVT series rolling bearing vibration velocity measuring instrument developed. What these instruments measure and evaluate is the silent quality of the rolling bearing at the time of testing (also referred to as vibration and noise quality in general literature), and cannot evaluate the quiet life quality of the tested rolling bearing, that is, how much the tested rolling bearing operates in this state. After a lo...

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Problems solved by technology

There are three main defects in this method: First, the method uses simulation or real working conditions, the test period is long, and the test cost is large

Because general rolling bearings, especially rolling bearings of air conditioners and office supplies that require high quiet quality, have a small load under the working conditions, and the test period is very long under the condition of small loads. More than one year, so the test cost is relatively high; second, this method uses the noise measurement method to evaluate the length of the silent life of the rolling bearing, the noise measurement has high requirements on the environmental noise, the test can only be carried out in the noise room, and the construction cost of the noise room is relatively high , also resulting in high test costs; third, this method adopts the actual working condition test, and its evaluation results are only applicable to this working condition, which is not universal, and is not suitable for the manufacturing process diagnosis or product quality assessment of rolling bearing manufacturers.

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