Safety protection device used for maintenance of pit of shallow-pit elevator

Abstract

The invention discloses a safety protection device used for maintenance of a pit of a shallow-pit elevator. The safety protection device comprises an elevator shaft and a car system. A door position detection device is arranged on one side of an elevator door opening at the bottom floor. A landing door cam and a car cam are separately arranged on the adjacent sides of a landing door and a car doorof the elevator. The door position detection device comprises a fixing frame, a detection switch, a switch installation block, a reset spring, a rotary frame, a first rotary rod and a second rotary rod. A car stop device is arranged above the elevator door opening at the bottom floor and comprises a first rotary arm, a second rotary arm, a first jacking mechanism, a second jacking mechanism and astopper. The safety protection device further comprises a controller. The detection switch, the first jacking mechanism and the second jacking mechanism are all connected with a control device. The car cam is arranged on the lower side of a car. By the adoption of the safety protection device, the maintenance safety of the elevator pit can be guaranteed, and people can go out conveniently.

Description

technical field [0001] The invention relates to the technical field of elevator maintenance, in particular to a safety protection device for shallow pit elevator pit maintenance. Background technique [0002] As the application of elevators becomes more and more extensive, the use of elevators is becoming more and more extensive. For some old buildings, more and more elevators have begun to be installed; however, due to the special environment of old communities, especially the complicated circuits, gas, water supply and drainage pipe networks under the old buildings, in order to meet the requirements of fire protection , Demolition, structural safety and other reasons, resulting in the installation of the elevator can only be made into a shallow pit. [0003] During the operation of the elevator, it is necessary to carry out routine maintenance on the elevator regularly. During the maintenance process, elevator maintenance personnel inevitably need to enter the elevator p...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a safety protection device for shallow pit elevator pit maintenance, which can effectively solve the problem of insufficient space for inspection of shallow pit elevator pits and potential safety hazards, and It does not affect the operation of the elevator, so as to ensure the safety of the elevator pit inspection and facilitate people's travel

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