An elevator safety warning system

Abstract

The invention discloses an elevator safety pre-warning system, and aims at solving the problems that a locking system is started while an elevator meets a fault, causing panic and injury of users, and pre-warning function is not provided. According to the technical scheme, the elevator safety pre-warning system is characterized by comprising a control device, a main control terminal, a warning device and an emergency stopping device, wherein a time detecting device for detecting the time of a car moving to each floor and outputting a time detecting signal is arranged at the top end, positioned at each floor, of a bracket; the control device can be used for calculating a car running speed signal according to the height of each floor; the main control terminal can be used for determining whether the car running speed is beyond the maximum allowable default value VG according to the speed signal of each floor and outputting a main control signal; the warning device is used for warning; the emergency stopping device is used for stopping the car at the close floor in the car running direction. With the adoption of the elevator safety pre-warning system, an elevator can be stopped at the closest layer when a motor of the elevator runs too fast, and people can be informed for leaving the car, so that the pre-warning effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of elevator control, in particular to an elevator safety early warning system. Background technique [0002] An elevator is a permanent transportation device that serves several specific floors in a building, and its car runs on at least two rigid rails that are perpendicular to the horizontal plane or less than 15° from the vertical. The size and structure of the car are convenient for passengers to enter and exit or to load and unload goods. It is customary to use elevator as a general term for vertical transportation in buildings regardless of its driving mode. According to the speed, it can be divided into low-speed elevators (below 4 m / s), fast elevators (4-12 m / s) and high-speed elevators (above 12 m / s). [0003] In the prior art, such as the Chinese patent whose publication number is CN103449276A, an elevator safety warning system includes: a hall door opening / closing detection device for detecting ...

AI Technical Summary

Problems solved by technology

[0004] During the operation of the elevator, there are three states, which are the acceleration state, the constant speed state, and the deceleration state. In the accident of the elevator, because the speed of the acceleration state and the deceleration state is relatively slow, the speed of the constant speed state is compared to the The speed in the acceleration state and the speed in the deceleration state are relatively fast, so most accidents occur when the elevator is at a constant speed and are extremely dangerous. In life, people often squeeze the elevator in order to save time, and The motor in the elevator will be damaged due to long-term extreme work. At this time, the motor needs to be maintained. In real life, elevators are regularly maintained and cannot be maintained for a single elevator. Due to fatigue of the motor, the motor will rotate abnormally at a constant speed, which will lead to elevator accidents. In the prior art, the elevator has a good locking system, and the locking system will directly lock the car. Stopping, in the process of stopping quickly, will cause panic to passengers, and even cause injury to passengers, there is room for improvement

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