Elastic switch security device capable of starting protective measures once elevator single wire rope fractures

Abstract

The invention relates to an elastic switch safe device capable of starting protecting measure at the moment of breaking a single steel cable of an elevator, which is a safe device used for an elevator cage. The elastic switch safe device can immediately start the safe measure when a first steel cable is broken, namely a command for braking the cage and alarming is sent out so as to urge the operation of maintenance. The elastic switch safe device comprises elastic switches 13 and 14, a switch base plate 15, a command conducting wire 16, and the like, wherein one or more of the elastic switches 13 and 14 are arranged on an end directing point of a pull rod 6 or an insulating base plate 15 of a rope plate 38, and the elastic switches 13 and 14 are connected with the command conducting wire 16 which is connected with an elevator braking device and an alarming device. When only one steel cable 11 is broken, the prior elevator safe device cannot automatically alarm or brake, while the elastic switch safe device can avoid the defect. The elastic switch safe device fills the blank of using an elastic switch for starting a braking and alarming measure in the aspect of the elevator safe device, and has a plurality of proposals to select.

Description

technical field [0001] The invention relates to a safety device, in particular to a safety device used on an elevator. Background technique [0002] Most of the current elevator cars use several traction wire ropes, and when an accident occurs, these wire ropes usually do not break at the same time, but often start from the first wire rope breaking, and cause the remaining wire ropes to break within a short period of time; when the first If one wire rope breaks, the impact on the up and down running speed of the elevator car is not necessarily significant, and the speed limiter cannot detect that one wire rope has broken, which leaves a great hidden danger to the safety of the car. Contents of the invention [0003] The object of the present invention is to provide a kind of elastic switch safety device for elevator car; order or immediately send out an alarm to urge the maintenance work to be carried out; thus, the elastic switch safety device can promptly eliminate the ...

AI Technical Summary

Problems solved by technology

[0002] Most of the current elevator cars use several traction wire ropes, and when an accident occurs, these wire ropes usually do not break at the same time, but often start from the first wire rope breaking, and cause the remaining wire ropes to break within a short period of time; when the first If one wire rope breaks, the impact on the up and down running speed of the elevator car is not necessarily significant, and the speed limiter cannot detect that one wire rope has broken, which will leave a great hidden danger to the safety of the car.

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