Safe elevator

Abstract

The invention relates to the field of elevator equipment manufacturing, in particular to a safe elevator. The safe elevator is provided with multiple anti-falling devices and comprises an elevator carand an elevator shaft, wherein a rubber bag is arranged on the outer peripheral surface of the elevator car, and a safety air bag is arranged in the rubber bag; an upper limiting groove and a lower limiting groove are formed in the inner wall of the elevator shaft, the elevator car is provided with positioning rods corresponding to the upper limit groove and the lower limit groove respectively, and telescopic mechanisms for allowing the positioning rods to extend and retract are arranged on the elevator car; the safe elevator further comprises a controller composed of a single-chip microcomputer, an auxiliary steel cable, a braking device arranged at the top of the elevator shaft and a detecting device for detecting the descent speed of the elevator car, the output end of the detecting device is connected with the input end of the controller, and the controller is connected with the braking device; and a plurality of hard springs which are uniformly distributed are arranged at the bottom of the elevator car, one ends of the hard springs are fixed at the bottom of the elevator car, and the other ends of the hard springs are fixedly welded to round or square iron plates.

Description

technical field [0001] The invention relates to the field of elevator equipment manufacturing, in particular to a safety elevator with multiple fall prevention devices. Background technique [0002] With the development of my country's economy, the pace of urbanization is getting faster and faster, the land resources in many cities are becoming more and more tense, and there are more and more high-rise buildings. Elevators are becoming more and more popular as a necessary device for high-rise buildings. Although the elevator has many advantages and brings a lot of convenience to people, most elevators lack safety protection devices during the vertical lifting of the elevator. The moment the goods enter and leave the elevator car or the moment the elevator car goes up and down, it will have a strong impact on the elevator, and directly act on the brake device of the elevator, which may cause the elevator to fall. In recent years, many accidents in elevators have occurred freque...

AI Technical Summary

Problems solved by technology

[0002] With the development of my country's economy, the pace of urbanization is getting faster and faster, the land resources in many cities are becoming more and more tense, and there are more and more high-rise buildings. Elevators are becoming more and more popular as a necessary device for high-rise buildings. Although the elevator has many advantages and brings a lot of convenience to people, most elevators lack safety protection devices during the vertical lifting of the elevator. The moment the goods enter and leave the elevator car or the moment the elevator car goes up and down, it will have a strong impact on the elevator, and directly act on the brake device of the elevator, which may cause the elevator to fall. In recent years, many accidents in elevators have occurred frequently, causing There are many reasons for such an accident. The wear and deformation of the rope groove of the traction wheel and the excessive lubricating oil adhered to the wire rope will cause the wire rope to slip in the rope groove, thereby causing the traction force to drop and the elevator car to fall. In some cases, the elevator car is overweight, causing the steel cable to break, causing the elevator car to fall and cause an accident.

[0003] In the prior art, a bolt-type anti-fall device is usually used. The bolt-type anti-fall device restricts the degree of freedom of the car in the vertical direction through the bolt, so that it can maintain a suspended state, but the bolt-type anti-fall device has certain defects. , for example, the degree of freedom of the bolt in the horizontal direction is not restricted, which makes it not stable enough in the working state. Once the bolt is drawn out of the lock hole, serious accidents will occur, and the structure is complex, requiring high positioning accuracy of the system, which is easy to Faulty and inconvenient to maintain

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