A rope-off device for an elevator speed limiter

Abstract

The invention discloses an elevator speed limiter rope-off device. The elevator speed limiter rope-off device comprises a rope picking device installed beside a speed limiter on the ground of a machine room and a lifting device installed on the ground of a bottom pit, wherein the rope picking device controls ascending and descending of the lifting device through wireless signals. The elevator speed limiter rope-off device has the beneficial effects that due to the fact that the lifting device lifts an expansion rope wheel up, a steel wire rope only bears its own gravity, a lifting unit of the rope picking device lifts the steel wire rope to a rope-off state, the degree of damage to the rope is low in the speed limiter rope-off process, the rope-off work can be safely and conveniently finished, and the speed of the speed limiter can be measured conveniently; the elevator speed limiter rope-off device does not need to be installed in advance and is installed temporally in use, and the use cost is reduced; in addition, the elevator speed limiter rope-off device is high in adaptability, has no limit on the building height, namely the elevator landing, and is applicable to a low-layer elevator and a medium - high-layer elevator and also applicable to the rope-off work of a super high-rise elevator speed limiter; and the elevator speed limiter rope-off device is simple in operation method, and a technical guarantee is provided for quick detection of the speed limiters.

Description

technical field [0001] The invention relates to a speed inspection of an elevator overspeed governor; in particular, it relates to a rope-off device for an elevator overspeed governor. Background technique [0002] Elevator is an important special equipment, and it is also a convenient means of transportation for ordinary people. Its importance is self-evident. The elevator speed limiter is one of the safety control components in the elevator safety protection system. When the elevator is running for any reason, the car may overspeed or even fall, and all other safety protection devices do not work, the speed limiter and safety gear will have a linkage action to make the elevator car Stop, the speed limiter is crucial. [0003] The speed inspection of the speed limiter of the passenger elevator belongs to the national statutory inspection, and the speed inspection of the speed limiter should be carried out smoothly. On-site speed verification of the speed limiter or remov...

AI Technical Summary

Problems solved by technology

However, the purpose of installing this device is only to facilitate the speed inspection of the speed limiter, and it has little effect on directly improving the safe operation of the elevator.

[0008] 2. High cost of use

After installation, it will only be used when checking the speed of the speed limiter, that is, once every two years, and the cost of use is high

[0010] 3. Poor applicability for high-rise elevator speed limiters

Moreover, the speed limiter equipment of high-rise elevators is relatively large, and there will be certain difficulties in the installation of this equipment.

[0012] 4. There is a certain degree of damage to the wire rope of the speed limiter

[0013] For high-rise elevators, the weight of the steel wire rope increases significantly with the number of landings, and it cannot be ignored. For the device that clamps the steel wire rope, it must not only overcome the weight of the steel wire rope, but also overcome the dragging of the bottom pit rope pulley to the steel wire rope. It is easy to cause a certain degree of damage to the wire rope at the clamping part of the wire rope

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