Elevator traction sheave permanent magnet safety retarding device

An elevator traction and retarding device technology, applied in transportation, packaging, elevators, etc., can solve problems such as passenger injury, high deceleration, and elevator car braking failure, and achieve improved environmental protection, improved service life, and improved The effect of using safety

Pending Publication Date: 2022-03-25
MAGNA MAGNETOMOTIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a permanent magnet safety retarder for elevator traction wheels, which solves the problem that the existing elevator overspeed protection device easily causes excessive deceleration when braking, resulting in excessive deceleration in the car. Passenger injury and psychological panic, or failure of the traction sheave lead to brake failure of the elevator car, elevator stall, technical problems that may easily lead to safety accidents

Method used

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  • Elevator traction sheave permanent magnet safety retarding device
  • Elevator traction sheave permanent magnet safety retarding device
  • Elevator traction sheave permanent magnet safety retarding device

Examples

Experimental program
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Effect test

Embodiment 1

[0045] refer to Figure 1-9 As shown, the elevator traction sheave permanent magnet safety retarder proposed by the embodiment of the present invention is used to decelerate the traction sheave 1 when the elevator stalls and descends, so as to avoid severe shaking of the car caused by the emergency braking of the traction sheave 1 cause injury to passengers.

[0046] The elevator traction wheel permanent magnet safety retarder includes a first magnetic part 11 fixedly arranged on the inner peripheral side wall of the traction wheel 1; a damping force can be generated between the first magnetic part 11 to slow the traction wheel The second magnetic part 2 of high speed, the second magnetic part 2 and the first magnetic part 11 are coaxially arranged, and can move along its axial direction to the hollow cavity of the first magnetic part 11 or away from the first magnetic part 11; and For driving the second magnetic component 2 to move along its axial direction, the driving comp...

Embodiment 2

[0063] Further, when the emergency brake of the elevator fails and the passengers are trapped, the permanent magnet safety retarder of the elevator traction wheel of the present application can also be used for the passengers to get out of trouble by themselves, so as to prevent the passengers from being in a closed environment for a long time (generally about 20- 30 minutes) A ​​safety accident occurred while waiting for rescue.

[0064] refer to Figure 10 As shown, its working principle is as follows:

[0065] When the elevator is trapped, the passenger opens the operating device in the car, such as an emergency rescue wrench, the operating device controls the permanent magnet safety retarder of the elevator traction sheave to open, the leveling support on the car unfolds, and the traction sheave locks the brake and the rope clamp used to clamp the traction rope between the traction sheave 1 and the car are simultaneously opened under the drive of the emergency power suppl...

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Abstract

The invention relates to a permanent magnet safety retarding device for an elevator traction sheave. The permanent magnet safety retarding device comprises a first magnetic piece fixed to the inner circumferential side wall of the traction sheave. Damping force can be generated between the second magnetic part and the first magnetic part to slow down the traction wheel, the second magnetic part and the first magnetic part are coaxially arranged, and the second magnetic part can move to the hollow inner cavity of the first magnetic part or be far away from the first magnetic part in the axial direction of the second magnetic part; and the driving assembly is used for driving the second magnetic piece to move in the axial direction of the second magnetic piece and is arranged on the second magnetic piece. The elevator has the beneficial effects that under the action of a permanent magnetic field formed between the first magnetic part and the second magnetic part, the traction wheel rotates around the shaft to form damping force for preventing relative movement of the traction wheel and the second magnetic part, so that the traction wheel drives the car to run at a speed, and passengers are prevented from being injured due to overlarge speed reduction of the car during emergency braking. When braking of the traction wheel and braking of the safety clamp are both invalid, the traction wheel is decelerated through the interaction between the first magnetic part and the second magnetic part, and then the lift car can run in a decelerated mode all the time.

Description

technical field [0001] The invention relates to the technical field of elevator safety, in particular to an elevator traction wheel permanent magnet safety retarder. Background technique [0002] Elevator is the high-rise building ride tool that people use daily, and existing elevator generally drives its operation by traction wheel. In order to ensure the safety of the elevator, the elevator is generally equipped with an elevator overspeed protection device, so that when the elevator fails and runs at an overspeed, the elevator will be braked urgently to avoid safety accidents. [0003] Existing elevator overspeed protection device mainly comprises: brake caliper, speed limiter, safety gear and buffer spring that are positioned at the bottom of elevator shaft. The speed limiter is used to monitor the running speed of the elevator car. When it is found that the elevator is running beyond the safe speed, the speed limiter can send a signal, and then cut off the power supply ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/04B66B5/18
CPCB66B5/04B66B5/185
Inventor 马忠威柴士伟王骏马骁
Owner MAGNA MAGNETOMOTIVE CO LTD
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