Method and device for measuring stepped driving wheel pair with structural optical sight sensing

Abstract

A method for automatically detecting the geometric sizes of the wheel pair for rolling stock and the scratch and stripping on the running surface of said wheel features that the step drive system is used to control the rotation of wheel pair and the structural light and visional sensor are used for said detection. Its apparatus is composed of a base, a gantry structure, vertical arm supporter, the step motor driver system installed to base, and the structural-light visional sensor installed to gantry structure.

Description

technical field [0001] The invention relates to a measurement method and a measurement device for a railway vehicle wheel set; in particular, it relates to a measurement method and a measurement device for a step-driven wheel set using structured light vision sensing Background technique [0002] The wheel set of a vehicle is an important interchangeable part on a railway locomotive, and its technical status directly affects the running safety and speed of the vehicle. In the process of overhauling wheel sets, a large number of wheel sets are removed from the locomotive every day, and there are as many as a dozen wheel set parameters to be tested, such as rim thickness, rim width, wheel diameter, and tread wear. The measurement accuracy is high, and some parameter conditions need to be diagnosed in time. These are important parameters that directly affect the operation of the vehicle, and must be detected and diagnosed in a timely and accurate manner. These measurement para...

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Problems solved by technology

However, due to the wear of the guide wheel, measurement error and positioning error, this method sometimes still cannot meet the high precision requirements.

Although there are some automatic measurement devices for wheel sets in China, they are basically contact measurement or non-contact measurement with complex mechanical movement mechanism. The main problems of the measurement method are: large measurement errors, reliability and measurement Accuracy needs to be further improved

However, the equipment imported from abroad is not only expensive, but also mostly uses traditional vision, displacement measurement or laser scanning distance measurement methods. Most of the equipment does not have the function of diagnosing the abrasion and peeling of the tread of the wheel set, and is limited to the measurement of the outer dimension of the wheel set.

In addition, there are differences between foreign railway systems and our country's railway systems, and the materials, specifications and dimensions of the wheelsets are also different. Therefore, it is not yet ripe to use imported equipment to test the wheelsets of my country's railway vehicles.

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