Elevator traction clutch braking system, method and device based on magneto-rheological effect

Abstract

The invention relates to an elevator dragging clutch brake system and method and device based on a magneto-rheological effect. The device comprises a magneto-rheological fluid clutch, a magneto-rheological fluid brake and a controller, wherein a driven shaft of the magneto-rheological fluid clutch is connected with a brake shaft of the magneto-rheological fluid brake; and the controller controls one of the magneto-rheological fluid clutch and magneto-rheological fluid brake to get electricity. According to the invention, the power transfer and brake are controlled by use of the characteristics that the magneto-rheological fluid can be controlled in a stepless manner under a magnetic field and can quickly change the shear yield strength, thereby meeting the requirements for the safety, energy conservation, environmental protection, comfort and the like of an elevator. Meanwhile, in the design of the magneto-rheological fluid clutch and magneto-rheological fluid brake, double-safety protection is added to the original elevator, and the whole device is fast in response and responds in the shortest time, thereby avoiding accidents and greatly improving the reliability and safety coefficient of the elevator.

Description

technical field [0001] The invention relates to a magneto-rheological effect-based elevator traction clutch braking system, method and device. Background technique [0002] Magneto-rheological fluid is a new type of intelligent material. Its biggest feature is that under the action of a magnetic field, the shear yield stress increases with the increase of the magnetic field. After the magnetic field is removed, it returns to a fluid with low viscosity. Under certain conditions, the transition process between solid and liquid states is reversible and rapid. The device developed based on this magnetorheological effect material has the characteristics of simple structure, stepless smooth transmission, no impact, low noise, fast response, easy control, and low energy consumption. Therefore, magnetorheological fluids have wide application potential. [0003] An elevator is a means of transportation used in buildings to transport people or goods vertically. With the development...

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Problems solved by technology

[0005] The present invention makes improvements to the disadvantages of low safety and high noise during operation of the existing elevator single brake, that is, the technical problem to be solved by the present invention is to provide a simple structure, safe and reliable Elevator traction clutch braking system, method and device, which can improve the safety performance of the elevator and at the same time improve ride comfort, and at the same time have impact resistance, low energy consumption, and low noise, meeting the requirements of elevator intelligence and environmental protection

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