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Safety protection device for elevator speed limiter

A technology of safety protection device and elevator speed limiter, which is applied in the direction of transportation and packaging, elevators, etc., and can solve problems such as misoperation of safety gear

Active Publication Date: 2014-08-06
SJEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the overspeed governor wheel is stuck and fails, the overspeed governor wire rope will generate a force to pull the safety gear, which will cause the safety gear to malfunction; or cause the elevator to slip in the overspeed governor wheel rope groove when the elevator is overspeed. Unable to trigger safety gear action

Method used

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  • Safety protection device for elevator speed limiter
  • Safety protection device for elevator speed limiter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The structure of the present invention will be further described below in conjunction with the accompanying drawings.

[0010] see Figure 1-2 As shown, the elevator speed governor safety protection device includes a speed governor seat 2, a speed governor wheel 6 that is rotatably arranged on the speed governor seat 2 through a rotating shaft 4, a signal transmitting device 3, a signal receiving device 1, a control system, the speed governor wheel 6 includes an inner peripheral wheel seat 62, an outer peripheral wheel body 61, and a plurality of webs arranged between the inner peripheral wheel seat 62 and the outer peripheral wheel body 61, which are rotatably sleeved on the rotating shaft 4 through bearings. 63, the plurality of webs 63 are evenly spaced along the circumferential direction of the wheel, there is a space 64 between two adjacent webs 63, and the speed governor steel wire rope 5 winds upwards in the rope groove of the outer peripheral wheel body 61. ...

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PUM

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Abstract

The invention discloses a safety protection device for an elevator speed limiter. The signal emitting device emits a signal. If it is blocked by a web, the signal cannot be received by the signal receiving device. The signal emitted by the signal emitting device can only pass through two adjacent Only the space between the webs will be received by the signal receiving device, so the running speed of the overspeed governor wheel can be reflected by the frequency of the signal received by the signal receiving device. The control system detects the frequency of the signal received by the signal receiving device, and according to the frequency To calculate the instantaneous speed of the speed limiter wheel, and judge, once the instantaneous speed of the speed limiter wheel exceeds the range of plus or minus 5% of the instantaneous running speed of the elevator, for example, the rotating shaft is broken or the bearing is stuck, causing the speed limiter wheel When the jamming fails, the control system will send a signal to stop the elevator running, so as to stop the elevator in time to ensure the safety performance of the elevator and prevent the wire rope of the speed governor from generating a force of pulling the safety gear due to the stuck wheel of the speed governor. As a result, the safety gear malfunctions; or to prevent the elevator from overspeeding due to a certain reason, the steel wire rope slips in the speed governor wheel rope groove and cannot trigger the safety gear action.

Description

technical field [0001] The invention relates to a safety protection device for an elevator speed governor. Background technique [0002] In the speed governor of the elevator, the speed governor seat is supported with a rotating shaft, and the speed governor wheel is sleeved on the rotating shaft through a bearing, and the speed governor wire rope is wound upwards in the rope groove of the speed governor wheel, and the speed governor wheel During normal operation, the frictional force exerted on the wire rope by the speed governor wheel will pull the wire rope to trigger the action of the safety gear, or press the wire rope into the rope groove of the speed governor wheel through the block to pull the safety gear. Once the rotating shaft breaks, the speed limiter wheel will fall to the speed limiter seat, and the speed limiter wheel will be stuck and fail, or the speed limiter wheel will be stuck when the bearing is stuck. Once the overspeed governor wheel is stuck and fail...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/02B66B3/00
Inventor 钱松
Owner SJEC CORP