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A bidirectional speed limiter with the function of monitoring the unexpected movement of the elevator car

A technology of unexpected movement, elevator car, applied in the direction of transport and packaging, elevator

Active Publication Date: 2019-08-20
刘德民 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of a power failure, the unexpected movement of the elevator car cannot be monitored and braked.

Method used

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  • A bidirectional speed limiter with the function of monitoring the unexpected movement of the elevator car
  • A bidirectional speed limiter with the function of monitoring the unexpected movement of the elevator car

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Experimental program
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Embodiment Construction

[0017] like figure 1 and figure 2 As shown, the two-way speed limiter with the function of monitoring the unexpected movement of the elevator car according to the present invention is structurally improved on the basis of the LD130 type two-way speed limiter produced by Foshan Lidong Elevator Parts Co., Ltd. The two-way speed limiter includes a bracket 1 and a speed measuring wheel 2 , a ratchet wheel 3 , a shift fork 31 , a brake mechanism trigger assembly, four blocks 5 and a block interference assembly mounted on the bracket 1 . The fork 31 is integrally formed with the ratchet wheel 3 and is linked with the trigger assembly of the braking mechanism. The four blocks 5 are arranged on one side surface of the speed-measuring wheel 2 at equal distances and at equal angles corresponding to the rotation axis of the speed-measuring wheel 2 . The interference component is mainly composed of a support 61, an electromagnet 62 and an electromagnet core 63: the support 61 is fixed ...

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Abstract

The invention discloses a bi-directional speed governor with a function of monitoring accidental movement of an elevator car. The bi-directional speed governor comprises a bracket; the bracket is provided with a tachometer wheel, a ratchet wheel and a brake mechanism trigger assembly; the ratchet wheel is provided with a shifting fork linked with the brake mechanism trigger assembly; at least two stop blocks are arranged on one of the side surfaces on the circumference of the tachometer wheel; and the shifting fork is provided with an interference assembly, and interference can occur between the shifting fork and the stop blocks. The interference assembly comprises a support fixed to the shifting fork, an electromagnet fixed to the support and an electromagnetic core which is arranged in the electromagnet and penetrates through a hole in the shifting fork, and the motion trail of the electromagnetic core is parallel to the axis of the tachometer wheel. The bi-directional speed governor can monitor the accidental movement of the elevator car in the two directions on the basis that an original overspeed monitoring function is reserved.

Description

technical field [0001] The invention belongs to the technical field of safety protection devices for traction elevators, and in particular relates to a bidirectional speed limiter with the function of monitoring the unexpected movement of an elevator car. Background technique [0002] At present, my country's current elevator standard GB788-2003 "Safety Technical Specification for Elevator Manufacturing and Installation" does not provide protection requirements for the accidental movement of the elevator car, resulting in the current elevator in use when the brakes and other components are in an abnormal state. When the landing door and hall door are opened, the elevator car moves up or down unexpectedly, which is likely to cause personal safety accidents of passengers cutting in and out of the elevator door. In order to solve this safety problem, the National Standards Committee approved the implementation of GB7588-2003 "Elevator Manufacturing and Installation Safety Techni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/18B66B5/04
Inventor 刘德民袁德杰
Owner 刘德民