A method for monitoring pin wear condition based on piezoelectric ceramics

Abstract

The invention provides a method for monitoring abrasion conditions of a pin based on piezoelectric ceramic, and belongs to the field of pin connection of civil engineering and mechanical engineering. The method comprises the following steps of fixing a sound transmission sensor of a sound transmission monitoring system at one end of the pin, and collecting sound transmission information of surrounding environment in actual engineering, wherein the sound transmission information contains energy, amplitude and ascending time; using the energy, amplitude and ascending time as the main parameters for judging the abrasion condition of the pin, and displaying on a display device; starting to detect, and observing the three parameters of energy, amplitude and ascending time; because the energy, amplitude and ascending time are continuously and greatly increased under the condition of serious abrasion of the pin, using the energy, amplitude and ascending time as the judging basis, and replacing the pin or adding a lubricant at proper time. The method has the advantages that the sound transmission equipment and the to-be-monitored pin are connected together; the abrasion condition of the pin is judged by the main parameters of energy, amplitude and ascending time, the pin is monitored in real time, and the alarming is timely performed when the pin has serious abrasion.

Description

technical field [0001] The invention belongs to the field of pin connection in civil engineering and mechanical engineering, specifically, it uses acoustic emission technology based on piezoelectric ceramics to monitor the wear condition of the pin in the connecting piece in real time. Background technique [0002] In modern large-scale civil structures, such as long-span steel bridges and large-scale transmission towers, pins are an important connection method, and their health is the basis for the normal operation of the structure. Therefore, the health of the connection interface is more and more important. attention. [0003] The traditional monitoring method is based on a large amount of labor, and conducts regular and irregular spot checks on the pins. The whole process requires a lot of manpower and material resources, and it is impossible to meet the requirements of real-time monitoring, and it is impossible to detect serious wear and tear in the first place. The pi...

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Problems solved by technology

[0003] The traditional monitoring method is based on a large amount of labor, and conducts regular and irregular spot checks on the pins. The whole process requires a lot of manpower and material resources, and it is impossible to meet the requirements of real-time monitoring, and it is impossible to detect serious wear and tear in the first place. pins for early warning

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