Carbon contact strip thickness measuring device based on eddy current sensor

Abstract

The invention provides a carbon contact strip thickness measuring device based on an eddy current sensor. The invention belongs to the field of measuring equipment, the device includes a probe assembly and a monitor, the probe assembly comprises a support, a sliding block and a sensor. The support is of a vertically-arranged groove-shaped structure. The sliding block is arranged in the support andmoves up and down relative to the support; a spring enabling the sliding block to move downwards is arranged between the sliding block and the lower end face of the support, an induction piece is arranged at the upper end of the sliding block, a receding hole is formed in the area, corresponding to the induction piece, of the support, the sensor is arranged opposite to the induction piece and detects the vertical position of the induction piece, and the sensor is electrically connected with the monitor which is used for receiving, processing and displaying data. According to the invention, the thickness parameters of the carbon contact strip at different positions can be rapidly tested, data display and output can be carried out, the measurement is more intelligent and automatic, the precision is better, the readiness is better, and the storage and subsequent analysis are convenient.

Description

technical field [0001] The invention belongs to the field of measuring equipment, and relates to the thickness detection of parts, in particular to the thickness detection of a carbon sliding plate on a pantograph on a railway. Background technique [0002] The device that connects the train to the high-voltage line is called a "pantograph". In fact, as long as the train is running, the pantograph will continue to wear and tear. There are several removable carbon or powder on the bow head of the pantograph. The alloy conductive skateboard is used to contact the catenary to get electricity from above. The texture of this skateboard is relatively soft, so when it rubs against the catenary, the main loss is on the skateboard, and the wear on the catenary line is quite small. , when the skateboard wears to the limit, you only need to replace it in the daily maintenance of the locomotive. Although this is more troublesome, it saves effort than replacing the catenary cable. Skateb...

AI Technical Summary

Problems solved by technology

[0003] The thickness of the carbon skateboard is the main parameter that determines whether it needs to be replaced. If the thinnest part of the carbon skateboard does not meet the specifications, it needs to be replaced. Therefore, it is very important to accurately measure the thinnest thickness of the carbon skateboard. If it is less than a certain thickness, replace it. , the replacement is frequent and the safety is improved, but it increases the cost and wastes raw materials, but if the replacement is not on time, there will be more serious safety hazards. The thickness of the carbon slide is measured, and then the test data is recorded. There is human error, and only a point test can be performed, and the thinnest position of the carbon skateboard is determined visually.

[0004] By searching the literature, a special tool for testing the thickness of the pantograph carbon slide plate was found, which provided a groove with a gradually increasing cross-section and a scale. Refer to the patent literature with the patent number CN200520135437.2, but this method has low efficiency and low precision. The accuracy is poor, the measurement size is discontinuous, there are human factors and safety hazards, and it is not suitable for the rapid development of electrified railways

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