Vehicle bearing failure testing instrument and failure testing method

Abstract

The invention provides a fault detector for a vehicle bearing, which judges by utilization of sound features of the bearing under the condition of fault. The detector comprises a connector, a driver, a decibel meter and a power module, wherein the connector is provided with a fixed component which is matched with a wheel axle hole of a wheel, and connected and fixed on the wheel; the driver drives the connector, drives the wheel to rotate, and simulates the running state of the wheel; the decibel meter measures the sound generated when the wheel is rotated, and respectively display values of high frequency components, medium frequency components and low frequency components; and the power module supplies power. The invention also discloses a method for detecting fault of the vehicle bearing. The fault detector for the vehicle bearing is importantly characterized in that the fault detector for the vehicle bearing quantizes the acquired sound according to high frequency, medium frequency and low frequency, takes quantized indexes as criterions, and avoids nondeterminacy caused by judgment in virtue of subjective experience.

Description

technical field [0001] The invention relates to the field of vehicle maintenance and fault detection, and more specifically relates to a vehicle bearing fault detector and a fault detection method. Background technique [0002] The bearing of the vehicle is a very important part of the vehicle. If the bearing fails or is damaged, it will have a serious impact on the performance of the vehicle and driving safety. Since the position of the bearing is not visible from the outside of the vehicle, it brings great difficulties to the detection of bearing faults. refer to figure 1 , figure 1 Shows where the bearings are located in the vehicle. It should be noted, figure 1 The mechanism shown is the wheel structure where the drive shaft is located, e.g. for a vehicle with front drive, figure 1 Shown is the structure of the front wheel. refer to figure 1 , the bearing 102 is placed in a hole 103 of the steering bridge 104 , the limit ring 106 , the baffle plate 108 , the axle ...

AI Technical Summary

Problems solved by technology

These requirements can be precisely controlled by computer in the automatic equipment of the manufacturer, but in the maintenance and inspection industry, it is impossible to have such a large and sophisticated equipment, which basically relies on manual operation, so the direction and uniformity of the pressure are all different. not guaranteed

Generally speaking, bearings removed in this way have been damaged during the disassembly process and cannot be used anymore

At the same time, if the operation is not done properly, not only will the bearing be damaged, but also the hole 103 of the steering bridge 104 will be damaged, resulting in greater losses

In this way, once a misjudgment occurs, it will cause great economic losses.

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