A method for contact wire wear detection
A detection method and contact line technology, applied in the field of detection, can solve the problems of human error, dangerous time-consuming and laborious, low efficiency of manual detection process, etc., and achieve the effect of improving efficiency, eliminating danger and ensuring safe operation.
Active Publication Date: 2021-03-12
宜达工程设计(天津)有限责任公司
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Problems solved by technology
[0006] 1) The manual detection process has low efficiency, human errors, certain dangers, and the need to cut off the catenary power supply during detection, which is time-consuming and labor-intensive.
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[0026] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] Figure 2 to Figure 4 The pantograph-catenary contact state diagram before the contact wire is worn out, the pantograph-catenary contact state diagram after the contact wire is worn out, and the contact diagram of the pantograph and the catenary wire are respectively shown. Among them, 1 is the contact wire, 2 is the pantograph, 3 is the strain sensor or pressure sensor, 4 is the catenary cable, 5 is the suspension string, and 6 is the worn area of the contact wire.
[0028] like figure 2 As shown, the unworn intact contact line 1 is in contact with the pantograph 2, and the height of the unworn intact contact line 1 is (h).
[0029] like image 3 As shown, the pantograph-catenary contact wears contact betwee...
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The invention discloses a method for detecting contact wire abrasion, which belongs to the field of detection. During the operation of the electric locomotive, the pantograph is in sliding contact with the contact line of the catenary, and this "pantograph-catenary" contact will cause the contact line of the catenary to wear. The strain data or pressure data on the pantograph during the pantograph-catenary contact process can be obtained through the strain sensor or pressure sensor installed on the pantograph, so that the contact pressure between the pantograph and the contact wire can be obtained to reversely push out the contact The stiffness of the wire and the amount of wear in contact with the wire. The detection method is not subject to the influence of bad weather and environmental factors; it can achieve high-precision detection; the detection system used is simple; compared with manual climbing, the detection efficiency is higher and the accuracy is higher; it can save capital investment; Real-time monitoring is achieved to grasp the health status of the contact line in real time; and it does not affect the normal operation of the locomotive.
Description
technical field [0001] The invention relates to the detection field, in particular to a method for detecting contact wire wear. Background technique [0002] The electrified railway catenary (flexible overhead catenary) is a special form of transmission line arranged along the railway line and erected above it to supply power to electric locomotives. The contact wire and the pantograph work through sliding friction contact, and this "pantograph-catenary" contact will cause wear on the contact wire of the catenary. When the wear of the contact wire reaches a certain level, it will cause fluctuations in the carrying capacity, which cannot provide good power supply for the locomotive. It may even cause the breakage of the contact wire, causing the train to fail to operate normally. This requires that after the contact wire is installed, the "health status" of the contact wire needs to be checked regularly to ensure the safe operation of the train. At present, the wear detect...
Claims
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IPC IPC(8): G01B21/00G01L5/00G06F30/23
CPCG01B21/00G01L5/00G06F30/23
Inventor 刘桂荣段书用徐福田
Owner 宜达工程设计(天津)有限责任公司