Dustproof performance simulation test machine for automobile hub bearing unit

Abstract

The invention discloses a dustproof performance simulation test machine for an automobile hub bearing unit, wherein automobile hub bearings mainly are third-generation in China, and the traditional dustproof performance test machine is incapable of simulating the sealing dustproof working conditions during an actual vehicle running process. The dustproof performance simulation test machine disclosed by the invention comprises a drive mechanism, a transmission mechanism, a loading mechanism, a dust box component, a fan component, a control system and a test component, wherein a main shaft is driven by the drive mechanism, and a buffering shaft is fixed with the main shaft; the piston of an axial loading oil cylinder is fixed with a first knuckle bearing by virtue of a first tension and pressure sensor; the first knuckle bearing is hinged with a first joint sleeve by virtue of a pin shaft; the first joint sleeve and a loading arm are fixed with a load loading plate, the loading arm is fixed with a second joint sleeve, and the second joint sleeve is hinged with a second knuckle bearing by virtue of a pin shaft; one end of a second tension and pressure sensor is fixed with the second knuckle bearing, and the other end of the second tension and pressure sensor is fixed with the piston of a radial loading oil cylinder. The dustproof performance simulation test machine disclosed by the invention is suitable for various automobile hub bearings, and capable of simulating the complex loaded conditions of the hub bearings.

Description

technical field [0001] The invention belongs to the technical field of bearing detection, and in particular relates to a simulation test machine for the dustproof performance of an automobile hub bearing unit. Background technique [0002] Automobile hub bearing unit is one of the key parts of the automobile chassis, its dustproof performance directly affects the working life of the hub bearing, and then affects the driving safety of the vehicle. In recent years, with the improvement of the level of my country's automobile industry, the dustproof performance of wheel hub bearings has attracted more and more attention from manufacturers and complete machine manufacturers. [0003] At present, the application of automobile hub bearings in my country is mainly the third generation. Compared with ordinary double-row angular contact ball bearings and double-row tapered roller bearings, the biggest difference is that the inner and outer rings each integrate a flange. The dustproo...

AI Technical Summary

Problems solved by technology

The dustproof performance of wheel bearings has been studied abroad earlier. International bearing giants such as SKF and TIMKEN have developed dustproof performance test benches for wheel bearings, but their prices are high, and it is difficult to meet domestic wheel bearing production due to technological blockade The actual needs of enterprises and users

In China, the common wheel bearing dustproof performance testing machine in the industry is generally improved based on the ordinary bearing dustproof performance testing machine, which cannot adapt to the wheel hub bearing flanges with many specifications.

On the other hand, in addition to bearing the axial and radial loads during the running of the car, the hub bearing unit of the car is also affected by a bending moment due to the influence of the tire camber angle and the toe angle of the tire, especially when the car is turning. , the bending moment increases sharply, so that the inner ring and outer ring of the hub bearing are not on the same axis. There is an urgent need for a dustproof performance testing machine for automotive wheel bearing units that can be applied to various wheel bearings and can simulate the complex loading conditions of radial, axial, and bending moments of wheel bearings.

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