Elevator overspeed emergency brake stop protection system

Abstract

The invention discloses an elevator overspeed emergency brake stop protection system. The problems that an emergency brake stop execution mechanism in the prior art is too long in stroke, delay appears after an elevator is emergently stopped, and the elevator safety risk is increased are solved. The system comprises a pair of guide rails, an elevator car, a control device arranged on the top in the elevator car, a speed monitoring device arranged on the elevator car and connected with the control device to be used for monitoring lifting speed of the elevator car in an elevator shaft in real time and transmitting a monitored speed signal to the control device in real time, and an emergency brake stop execution mechanism arranged on the elevator car and connected with the control device to be used for receiving an emergency brake stop signal transmitted by the control device to execute the emergency brake stop action. The emergency brake stop execution mechanism comprises a servo motor and a safety clamp connected with the servo motor. No force transmission mechanism exists in the middle, the stroke is extremely short, after a microprocessor sends out an emergency brake stop instruction, the elevator car can be rapidly clamped and stopped on a guide rail, and the elevator safety risk can be effectively reduced.

Description

technical field [0001] The invention relates to an elevator overspeed emergency stop protection system. Background technique [0002] With the increasing number of high-rise buildings in our country, elevators have become an essential tool for carrying people in buildings, and the safety of their operation is the focus of people's attention in the process of using elevators. The safety of its operation is the focus of people's attention in the process of using the elevator. However, in recent years, incidents of "cannibalism" and "injury" of elevators have occurred frequently, and the safety of elevators has attracted great attention for a while. [0003] For this reason, a variety of mechanical and electrical safety devices are equipped in the design and production of the elevator system to prevent dangerous accidents that may occur in the elevator. The prior art generally uses a centrifugal speed governor to limit the overspeed operation of the elevator. The following pr...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide an elevator overspeed emergency stop protection system to solve the problem that the emergency stop actuator travel of the prior art is too long, which causes the elevator to be stuck in an emergency and delays the safety risk of the elevator.

Images