Door interlock short-circuit protection loop for elevator

A protection circuit and door interlocking technology, applied in elevators, transportation and packaging, etc., can solve problems such as equipment or personnel injury, elevator door opening operation, etc.

Active Publication Date: 2012-04-25
KUSN KOYO ELEVATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the early stage of elevator commissioning or after the elevator is in normal use, the door interlock is disconnected due to a fault. In order to facilitate maintenance, the on-site installation and maintenance personnel usually directly short-circuit the door interlock circuit to make the elevator run in an unsafe state; thus, If you forget to remove the short wire when the "inspection" is turned to "automatic" after troubleshooting or maintenance, it is likely to cause the elevator to run with the door open, causing damage to equipment or personnel

Method used

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  • Door interlock short-circuit protection loop for elevator
  • Door interlock short-circuit protection loop for elevator
  • Door interlock short-circuit protection loop for elevator

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Embodiment Construction

[0031] The elevator door interlock short-circuit protection circuit proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and use imprecise ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0032] The core idea of ​​the present invention is to provide an elevator door interlock short-circuit protection circuit. When the elevator door interlock circuit is disconnected due to a fault, causing the door interlock relay to lose power, so that the elevator stops running, the maintenance personnel can according to The operation instructions are to short-circuit the door interlock protection short-circuit terminals with special marks ...

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Abstract

The invention provides a door interlock short-circuit protection loop for an elevator. The door interlock short-circuit protection loop comprises a door interlock relay, a machine room overhauling switch unit, a door interlock loop, a short-circuit unit and an auxiliary relay unit, wherein the machine room overhauling switch unit comprises a first switch and a second switch; and the auxiliary relay unit comprises an auxiliary relay and an auxiliary relay switch. In the invention, a way for forbidding the elevator to run under the condition that a short-circuit line of the door interlock loop is not detached is adopted, so that equipment damage or personnel hurt caused by door opening and carriage of the elevator due to direct short circuit of the door interlock loop is avoided.

Description

technical field [0001] The invention relates to the field of elevator safety, in particular to an elevator door interlock short circuit protection circuit. Background technique [0002] In the early stage of elevator commissioning or after the elevator is in normal use, the door interlock is disconnected due to a fault. In order to facilitate maintenance, the on-site installation and maintenance personnel usually directly short-circuit the door interlock circuit to make the elevator run in an unsafe state; thus, If you forget to remove the short wire when the "inspection" is turned to "automatic" after troubleshooting or maintenance, it is likely to cause the elevator to run with the door open, causing damage to equipment or personnel. Contents of the invention [0003] The present invention provides an elevator door interlock short-circuit protection circuit, so as to prevent the event that the elevator door is opened and the car is driven due to direct short-circuit of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/02
Inventor 刘宝平龚永
Owner KUSN KOYO ELEVATOR
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