An emergency braking system, braking device and braking method for a safe elevator

Abstract

The invention discloses an emergency braking device for a safety elevator, which comprises an upper sheave arranged in an elevator shaft, a steel wire rope bypassing the upper sheave, a plurality of counterweights arranged on one side of the upper sheave, and a plurality of counterweights arranged on one side of the upper sheave. The first balance weight on the other side of the wheel and the rope clamp arranged on the car. The present invention also provides an emergency braking system for a safe elevator, comprising: the emergency braking device for a safe elevator as described above; a car speed acquisition unit for collecting the speed and acceleration of the car when it descends; a controller, It is connected with the car speed acquisition unit and the rope gripper of the emergency brake device of the safety elevator, and is used to receive the speed or acceleration data of the car when the car is descending sent by the car speed acquisition unit, and judge the speed when the car is descending Or when the acceleration exceeds the preset threshold, the action of the rope gripper is controlled to clamp the wire rope. By adopting the above technical solution, it is possible to prevent the brake equipment from being damaged by a large impact due to the inertia of the car.

Description

technical field [0001] The invention relates to an emergency braking system, a braking device and a braking method of a safety elevator, belonging to the technical field of special equipment and facility safety. Background technique [0002] Elevators are indispensable equipment in modern urban life, and the safety performance of elevators is also the top priority in the field of special equipment and facilities. At present, it is rare for the elevator to fall under the protection of various safety means, which is attributed to the various safety devices provided on the elevator, such as safety gears, rope grippers, and the like. However, with the continuation of the elevator's use time, the installation device may be aging, and once the danger cannot be eliminated in time during elevator maintenance, it will endanger the personal safety of passengers. In addition, the existing safety device has no buffering function during emergency braking, and the elevator is suddenly st...

AI Technical Summary

Problems solved by technology

However, as the elevator is used for a long time, the installation device may appear aging. Once the danger is not eliminated in time during elevator maintenance, it will endanger the personal safety of passengers.

In addition, the existing safety device does not have a buffer function during emergency braking. When the elevator falls at a high speed, it is subjected to huge resistance and stops suddenly. However, due to its own inertia, the braking device is subjected to a large impact force, which is prone to failure.

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