The hub bearing is one of the key components of the car. Its main function is to carry the weight and provide precise guidance for the rotation of the hub, which requires it to withstand both axial and radial loads.
The traditional automotive wheel bearings are composed of two sets of tapered roller bearings or ball bearings. The installation, oiling, sealing and clearance adjustment of the bearings are carried out on the automobile production line. This structure makes it difficult to assemble in a car production plant, high in cost, and poor in reliability and the car needs to be cleaned, oiled, and adjusted at the time of maintenance at the maintenance point.
The hub bearing unit is developed on the basis of standard angular contact ball bearings and tapered roller bearings. It integrates two sets of bearings and has good assembly performance, can eliminate clearance adjustment, lightweight, compact structure and load capacity. Large, sealed bearings can be pre-loaded with grease, omitting external hub seals and maintenance-free. They have been widely used in cars, and there is a tendency to gradually expand applications in trucks. The whole system consists of four parts: detection device, detection accessories, machinery, electricity and so on. Impedance plane analysis and multi-amplitude phase area alarm technology are used to realize automatic defect detection and output automatic sorting signal, alarm and marking signal.
Intelligent digital eddy current flaw detector is a fully automatic testing machine with large-scale imported integrated circuits, advanced eddy current technology, photoelectric technology and microcomputer control. With an exquisitely designed mechanical transmission device, a complete mechatronics system is formed. The software compiled by the WINDOWS operation platform makes the instrument more convenient and intelligent. The instrument has stable and reliable performance, high automation and fast detection speed. It is specially used for off-line inspection of hub bearings.
(> 6 pieces/minute)
0～99dB，step size 0.1dB
0~360° step 1 °
The range of impedance
adjustable in 5 grades
High-precision end and end-to-tail signal removal
Synchronous alarm output for internal and external clock control
High-precision real-time, delayed alarm output
Non-equal amplitude-phase/amplitude alarm domain
Computer full digital parameter adjustment
Fast digital/analog electronic balance
The instrument can be matched to any probe
Remote automatic help system
Chinese and English man-machine interface
Real-time impedance plane display
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