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Overspeed protective device for stair lift

A technology of overspeed protection and seat elevators, which is applied to elevators, transportation and packaging, lifts, etc. in buildings, and can solve problems such as potential safety hazards

Pending Publication Date: 2020-10-30
KUSN OMNI ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a great potential safety hazard for the personnel riding on the stair lift

Method used

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  • Overspeed protective device for stair lift
  • Overspeed protective device for stair lift
  • Overspeed protective device for stair lift

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: see Figure 2~4 As shown, an overspeed protection device for a stair lift, including:

[0026] A cam 6 that is fixedly connected with the output shaft 3 and rotates with the output shaft 3, the outer periphery of the cam 6 is equidistantly provided with a plurality of protrusions 7;

[0027] The ratchet 8 fixed on the cam 6, the periphery of the ratchet 8 is equidistantly provided with a plurality of ratchets 9, the ratchets 9 and the protrusions 7 are arranged alternately;

[0028] A rocker arm assembly rotatably arranged on the cam 6, one end of the rocker arm assembly is provided with a roller 10 in contact with the outer circumference of the cam 6, and the other end of the rocker arm assembly is provided with the The rocker hook 11 opposite to the periphery of the ratchet 8;

[0029] Spring 12, the spring 12 is connected with the rocker hook 11, the spring 12 is used to make the rotation speed of the rocker hook 11 and the output The preset rotati...

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PUM

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Abstract

The invention discloses an overspeed protective device for a stair lift. The overspeed protective device comprises a cam, a ratchet wheel, a rocker arm component rotatably arranged on the cam, a spring and a limiting switch; a protruding part on the cam and a pawl on the ratchet wheel are arranged in a staggered manner; an idler wheel in contact with the periphery of the cam is arranged at one endof the rocker arm component; a rocker arm hook opposite to the periphery of the ratchet wheel is arranged at the other end of the rocker arm component; the spring is connected with the rocker arm hook and is used for enabling the rotary speed of the rocker arm hook to be matched with the preset rotary speed of the output shaft when the rotary speed of the output shaft is within a preset rotary speed range so as to enable the rocker arm hook and the pawl to be staggered; the limiting switch is opposite to the idler wheel and is used for controlling the output shaft; and the rocker arm hook isbuckled with the pawl when the output shaft exceeds the preset rotary speed, so that the rocker arm component enables the output shaft to stop rotating through the limiting switch. The overspeed protective device is arranged on the output shaft to control the output shaft to stop rotating when the output shaft is overspeed, so that the life safety of a user is guaranteed.

Description

technical field [0001] The invention relates to the field of stair lifts, in particular to an overspeed protection device for stair lifts. Background technique [0002] A stair lift is an elevator that runs on the side of the stairs, and its main function is to help people with limited mobility go up and down the stairs. The driving structure of the existing stair lift is as follows: figure 1 As shown, it includes a brake motor 1, a reducer 2 connected to the brake motor 1, and a gear 4 is arranged on the output shaft 3 of the reducer 2, and the gear 4 is driven by the brake motor 1 along with it. The matched rack 5 moves, thereby realizing the movement of the stair lift along the extending direction of the rack 5 and realizing the purpose of transporting passengers. In the existing drive structure, when a system failure occurs, the stairlift will move down abnormally fast. Therefore, there is a great potential safety hazard for people riding on the stair lift. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/26B66B5/04B66B9/08
CPCB66B5/046B66B5/26B66B9/0807
Inventor 陈韵如
Owner KUSN OMNI ELECTRICAL TECH