A position detection device

Abstract

The invention provides a position detection device. The device is used to detect the position of the movable equipment, including a proximity switch, a proximity body, and an auxiliary mechanism for installing the proximity switch and the proximity body, and the auxiliary mechanism includes a support, a limit chute and a connection assembly, wherein , the limit chute is installed on the support, one or more proximity switches are installed on the support along the length direction of the limit chute, and the induction between the limit chute and the support and the proximity switch The distance between the surfaces is adjustable; the connection assembly is used to connect the proximity body to the movable device; the proximity body is located in the limit chute and can move along the length direction of the limit chute with the movement of the movable device , so as to approach or move away from the sensing surface of the proximity switch. The position detection device of the present invention can avoid the bad detection signal of the proximity switch or equipment failure caused by external factors, and has the advantages of stable operation, no environmental influence, low failure rate and the like.

Description

technical field [0001] The invention relates to the field of automatic detection, in particular to a detection device for detecting the position of a movable device by using a proximity switch. Background technique [0002] Proximity switches are commonly used detection components in automation systems. They are low in price, simple in application and strong in adaptability. Under the automation and continuous requirements of the metallurgical production line, it is often necessary to use proximity switches to detect the position of movable equipment, for example, to detect the opening and closing degree (or switch position) of gates or gate valves. [0003] Figure 1A It is the front view of the position detection device in the prior art. Figure 1B yes Figure 1A Left side view of the position detection device shown. [0004] In the prior art, when the proximity switch is used to detect the opening and closing degree of the gate, the installation method of the proximity ...

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Problems solved by technology

[0007] Second, the proximity switch is greatly affected by the environment. Under harsh on-site environmental conditions such as hot air stoves and flue gas stoves, high temperature, high altitude, humidity, and toxic and harmful gas areas, high temperatures are easy to burn cables, gates or pipe cooling water, rainy days, etc. Wet signal detection lines cause short circuits or ground faults, inadequate maintenance of toxic and harmful areas, etc., resulting in high failure rates of detection equipment, resulting in production accidents such as interruption of feeding or interruption of hot air

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