Controller and controlling method for preventing elevator from harming event

Abstract

A control unit of elevator for preventing the generation of damage events and its method are disclosed. When such conditions as too large error of floor alignment, moving cage without closing the floor gate of elevator well, or opening the floor gate of elevator well where the cage is not positioned occurs, the state of elevator is changed from 'normal running' to 'stop' and the elevator can be only manipulated in manitenance mode. After the failure is dissolved and the restoration operation is performed, the elevator can be normally running.

Description

technical field [0001] The invention relates to a control device and a control method for stopping an elevator in time when the position between the elevator car and the hall door is in an unsafe state. Background technique [0002] At present, in the process of elevator maintenance, due to the personnel operating in the shaft or pit, if the elevator is in the state of "normal operation" instead of "emergency stop" or "overhaul" at this time, once the hall door is closed, it is in line with the elevator operation. When the conditions are right, the car can run at the normal speed, which may cause injury to the personnel located in the shaft and the pit. This kind of injury accident still occurs from time to time at home and abroad. The safe use specification clearly stipulates that the elevator installed in the residence that can automatically open the landing door should be equipped with a device that can cut off the control circuit when an outsider enters the elevator shaf...

AI Technical Summary

Problems solved by technology

[0003] Publication number CN 1286208A (safety device and method for entering elevator shaft, 1999.8.30, OTIS company application,) it solves the problem that the personnel operating in the shaft is protected from the running car. The setting of the computer program is carried out by using the continuous monitoring of the relationship between the hall door and the car door. Then this technology has a defect that cannot be ignored: if the operator wants to enter the elevator shaft or pit to work, it is necessary to The elevator car runs to other floors through the function of the outside call button. After the elevator car reaches the door area and the door is automatically opened, the operator opens the hall door on the ground floor. In fact, the program cannot detect this situation. Appeared, and the proportion of this situation is very large. When the operator enters the pit and closes the hall door, the elevator can run the express train, and at this time, the purpose of the technical designer cannot be achieved.

For some speed-regulating elevators, if the elevator has such an abnormal leveling situation, it will use re-leveling technology to solve it, but this kind of re-leveling needs a time process, and it cannot be timely Adjusted to a safe range, there is a risk of tripping passengers entering and exiting during this re-leveling process

The important thing is that this re-leveling technology is only a compensation measure in this abnormal situation, and it is not enough to really solve the problem of misadjustment between the deceleration and the stop floor of the elevator. If this problem is not solved, The elevator will frequently appear out-of-tolerance leveling and re-leveling phenomenon

[0005] On the other hand, for some reason, the elevator will run the car when the door is opened. So far, these two problems have occurred from time to time at home and abroad, and it is difficult to eliminate them. Once they occur, they may threaten people's lives. , will cause serious accidents. Although the development of modern technology has made the elevator control ability unprecedentedly improved, the situation that the car runs when the door is opened does exist objectively. It is necessary to check the safety status of this area based on the original method. , using redundant technology and adding safety links to achieve double monitoring and control

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