A non-contact detection method for carbon slider thickness of pantograph bow head
A non-contact, thickness detection technology, applied in the direction of current collectors, measuring devices, electric vehicles, etc., can solve the problems that the measurement accuracy is easily limited by the experimental conditions, the measurement conditions are difficult to achieve, and the real-time measurement of the thickness of the carbon slider cannot be realized. To achieve the effect of convenient, fast and accurate detection, and good current receiving characteristics
Active Publication Date: 2020-09-29
INST OF MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
In the existing technology, the pantograph must be disassembled when the train is not running, and measured by contact measurement. The measurement conditions are not easy to achieve, and the measurement accuracy is easily limited by the experimental conditions. Real-time measurement of the thickness of the carbon slider cannot be realized.
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[0038] The pantograph is an important current-receiving electrical equipment for the electric traction locomotive to obtain electric energy from the catenary. The pantograph head is the part where the pantograph slide is in contact with the catenary. The load current flows smoothly through the contact surface of the contact wire and the pantograph slide. Much depends on the pantograph head. In order to ensure good current receiving characteristics of the pantograph-catenary, the contact of the pantograph head is very critical; since the pantograph head is in sliding contact with the catenary wire for a long time during work, the wear and tear is relatively large. The head carbon slide block 10 needs to be replaced when its thickness is worn to a certain extent, otherwise it will affect the flow characteristics. The invention aims to realize real-time on-line monitoring of carbon sliding plate wear amount during high-speed rail operation through non-contact measurement, so as t...
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The invention discloses a non-contact pantograph head carbon slide block thickness detecting method. The method comprises the following steps of firstly, spraying white paint on the surface to be tested of a pantograph carbon slide block; then, spraying irregularly-shaped and distributed speckles on the surface so that the identification requirement of a digital image related technology is satisfied; and then, on the side of a pantograph and at a straight line parallel to a side surface, placing three cameras, adjusting a focal length and an aperture so that the cameras can carry out clear imaging, and fixing camera positions. During the operation process of a train, pictures collected by the cameras are transmitted to an information center. A digital image correlation technology is used to select a sub-area near the edge line of a carbon slide block to obtain the coordinates of points on the upper and lower edge lines of the carbon slide block during a train operation process, and theabrasion loss of the carbon slide block at each position can be measured. The abrasion loss of the carbon slide block can be measured in real time during a high-speed train operation process so thatrepairing and replacing can be performed timely, and the good current-receiving property between the pantograph and a contact net is ensured.
Description
technical field [0001] The invention belongs to the technical field of locomotive manufacturing and inspection and maintenance, and relates to a maintenance and inspection method for locomotive equipment, in particular to a method for inspecting the thickness of a pantograph head on electric locomotives, urban rails, subways and other types of locomotives. Background technique [0002] The pantograph is an important current-receiving electrical equipment for the electric traction locomotive to obtain electric energy from the catenary. The pantograph head is the part where the pantograph slide is in contact with the catenary. The load current flows smoothly through the contact surface of the contact wire and the pantograph slide. Much depends on the pantograph head. In order to ensure good current receiving characteristics of the pantograph-catenary, the contact of the pantograph head is very critical; since the pantograph head is in sliding contact with the catenary wire for...
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IPC IPC(8): G01B11/06B60L5/20
CPCB60L5/205G01B11/06
Inventor 许向红张颢辰
Owner INST OF MECHANICS CHINESE ACAD OF SCI