Building exterior elevator door interlocking system and method thereof

Abstract

The invention discloses an elevator door interlocking system for external use in buildings and a method thereof. The system includes a control loop composed of a main power switch, a first main contactor, a motor, a second main contactor and an elevator outer door switch connected in sequence , which is characterized in that the system also contains an additional control circuit in which an intermediate relay and a plurality of travel switches are connected in series and a power supply is provided by a transformer, and the intermediate relay is arranged in the control circuit. The present invention adds an intermediate relay to the original control circuit and the travel switches of each floor are interlocked with the protective door. When each protective door or one of them is opened, the intermediate relay is powered off, the control circuit is disconnected and the power supply is interrupted, and the elevator for external use enters a stop state. It avoids the safety accidents that may be caused by construction personnel entering the operating space of the external elevator by mistake, and at the same time overcomes the limitations of subjective factors in manual operation, and realizes the process of automatically controlling the safe operation of the external elevator for buildings by the protective door.

Description

technical field [0001] The invention relates to a door interlocking system, in particular to an elevator door interlocking system for external use in buildings and a method thereof. Background technique [0002] The construction industry is a high-risk industry, and the mechanical management of risks is the focus of the control of various hazards. As the main vertical transportation equipment for high-rise building construction, external elevators for buildings have been widely used, but safety accidents often occur while improving production efficiency. The Ministry of Construction's follow-up survey of 1,000 building construction elevators shows that 80% of accidents are caused by violations. The research results show that accidents are caused by three factors: one is the unsafe behavior of people, the other is the unsafe state of things, and the third is the management defect or the influence of environmental conditions. Among them, the non-standard and unreasonable des...

AI Technical Summary

Problems solved by technology

Among them, the non-standard and unreasonable design of the floor protective door has left hidden dangers for many accidents.

Because the staff on the construction site often do not close the protective door for the convenience of work, and once any part of the body extends into the operating space of the external elevator, it may cause accidents where the elevator crushes or knocks down people

In order to prevent such accidents, some construction units have also taken corresponding measures. For example, the latch of the protective door is placed in the elevator, and the elevator driver is responsible for switching it. Difficult to turn on and off

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