Proximity switch test device under high temperature environment

Abstract

The present invention discloses a proximity switch testing arrangement in a high temperature environment. The proximity switch testing arrangement comprises a high temperature test mechanism and a normal temperature operation mechanism, the high temperature test mechanism includes a proximity switch, a proximity switch installing support, an induction sheet mobile device support and the like, and the normal temperature operation mechanism main includes a displacement regulation support, a micrometer and the like. The proximity switch installing support is provided with a proximity switch and the induction sheet capable of moving and rebounding under the action of tension; the displacement regulation support is provided with the micrometer with adjustable displacement; and one end of a steel wire is connected with the induction sheet in a high temperature oven, and the other end of the steel wire is connected with the micrometer. According to the invention, the safety test of a proximity switch may be performed in a high temperature environment; in the high temperature environment, the induction distance and the induction diameter of the proximity switch is adjustable; the proximity switch testing arrangement in the high temperature environment is applicable to the tests of proximity switches with different types in the high temperature environment, and is convenient for testing induction sheets with different materials; and the separation of the high temperature area and the normal temperature area is beneficial for safe operation.

Description

technical field [0001] The invention relates to the technical field of proximity switches, in particular to a proximity switch testing device in a high-temperature environment. Background technique [0002] Proximity switch is a position switch that can be operated without direct mechanical contact with moving parts, also known as switch sensor (that is, non-contact switch). Any pressure can be applied to make the switch actuate, thereby driving DC electrical appliances or providing control instructions to computer (plc) devices. It has the advantages of high positioning accuracy, wide operating frequency range, long service life, convenient installation and adjustment, and is widely used in machine tools, metallurgy, chemical industry, textile and printing industries. In the automatic control system, it can be used as the link of limit, count, position control and automatic protection. [0003] In recent years, with the rapid development of my country's aerospace, geologi...

AI Technical Summary

Problems solved by technology

However, most of the existing proximity switches are used in the normal temperature environment, and the temperature resistance performance of the proximity switches used in the high temperature environment has a high degree of dispersion, and the high temperature resistance should be screened before being put into the high temperature environment.

At the same time, the environment where this type of sensor is used is usually more complicated, and the damaged sensor cannot be replaced in time at any time. It is necessary to screen the reliability of this type of sensor before connecting it to the test environment.

[0004] However, the development and application of high-temperature-resistant proximity switches has just started. There are many researches on the application of proximity switch sensing distance in normal temperature environment, but there are relatively few studies on its application in high-temperature environment, especially in the high-temperature environment. Its comprehensive testing means and methods in terms of proximity distance, detected medium, ambient temperature, and action reliability, etc., to ensure the effectiveness, accuracy and reliability of proximity switches in high temperature environments

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