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Mechanical safety device for preventing overspeed descending of escalator or moving sidewalk

A technology of moving sidewalks and escalators, applied in the directions of escalators, transportation and packaging, can solve problems such as safety accidents, brake and stop failures, etc., and achieve the effect of avoiding safety accidents.

Active Publication Date: 2012-03-14
SJEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, once there is a problem with any link in the electrical signal collection, the electromagnet itself, or the brake device, it will cause the brake to fail and cause a safety accident.

Method used

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  • Mechanical safety device for preventing overspeed descending of escalator or moving sidewalk
  • Mechanical safety device for preventing overspeed descending of escalator or moving sidewalk
  • Mechanical safety device for preventing overspeed descending of escalator or moving sidewalk

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Embodiment Construction

[0013] The structure of the present invention will be further described below in conjunction with the accompanying drawings.

[0014] see Figure 1-4 As shown, the mechanical safety device for preventing downward overspeed on an escalator or moving walk includes a transmission wheel 1, a brake disc 2 that is arranged on the transmission wheel 1 and can rotate or stop with the transmission wheel 1, and a brake disc 2 that is rotated on the brake The mounting plate 4 on the disc 2, the weight 8 fixedly arranged on the mounting plate 4, the elastic member 7 which is arranged between the mounting plate 4 and the brake disc 2 and can provide the elastic restoring force of the mounting plate 4, is fixedly arranged in the system The first limit block 9 and the second limit block 10 on the moving disc 2, the safety switch 11 which is arranged on the brake disc 2 and can send a signal to cut off the power supply after being touched, is arranged on the escalator through the shock ab...

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Abstract

The invention discloses a mechanical safety device for preventing overspeed descending of an escalator or a moving sidewalk. When a driving wheel drives the escalator or the moving sidewalk to normally run, a mounting plate or a weighting block is propped against a first limiting block under an elastic restoring force of an elastic piece, the mounting plate or weighting block is separated from a safety switch, an obstructing piece is separated from a path of the mounting plate or weighting block following the rotation of a rotating plate and the obstructing piece has no obstructing function at the moment, thereby ensuring the normal rotation of a braking plate and the driving wheel and transferring the power. If the descending is overspeed, on the basis of an inertia hysteretic principle,the mounting plate follows the weighting block to rotate by overcoming the elastic restoring force of the elastic piece, the mechanical safety device is in an overspeed working state at the moment, the mounting plate or weighting block is propped against a second limiting block, and meanwhile, the safety switch is triggered by the mounting plate or weighting block, a signal is sent by the safety switch, a power supply is cut off, the path of the mounting plate or weighting block following the rotation of the rotating plate is obstructed by the obstructing piece, and the mounting plate or weighting block is stopped by the obstructing piece, namely the rotating plate and the driving wheel are braked, thereby timely stopping the escalator or the moving sidewalk and avoiding the happening of a safety accident.

Description

[0001] technical field [0002] The invention relates to a mechanical safety device for preventing downward overspeed on an escalator or moving walkway. Background technique [0003] In the prior art, the lifting height of escalators or moving walks is getting higher and higher, and various companies have installed additional safety brakes on escalators and moving walks with higher lifting heights or public transport types. These additional safety brakes are basically They are all electromechanical combination products, which mainly rely on electrical components to detect signals such as overspeed and chain breakage, and then trigger the electromagnet to act, and then drive the relevant braking device to stop the escalator or moving walk. In this case, once there is a problem in any link of the electrical signal collection, the electromagnet itself, and the braking device, it will lead to the failure of braking and a safety accident. Contents of the invention [0004] The...

Claims

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Application Information

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IPC IPC(8): B66B29/00
Inventor 李春福张志雁
Owner SJEC CORP
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