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Self-locking control device used for descent control device

A technology of a control device and a descending device, which is applied to life-saving equipment, building rescue, etc., can solve the problems of poor maintenance, casualties, slow descent of roofs or windows, etc., and achieves the effect of simple operation and convenient use.

Inactive Publication Date: 2017-10-20
刘雪娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of economy and society, there are more and more high-rise buildings, and various disaster-causing factors are constantly increasing. In the event of a fire and other accidents, even if there are perfect fire-fighting facilities and safe passages, casualties will often be caused by poor daily maintenance. However, most of the high-altitude descending devices used for escape in reality are passively controlling the descent speed. During the initial descent and descent process, the user needs a lot of courage, and there will be some fear, especially if the mental and physical conditions are not good. Users will have a lot of ideological pressure
In addition, in reality, high-altitude fire rescue is still fixed by ropes, and the roof or window is lowered slowly, requiring the cooperation of companions to passively control the height and speed of descent

Method used

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  • Self-locking control device used for descent control device
  • Self-locking control device used for descent control device
  • Self-locking control device used for descent control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take a user with m=80Kg as an example, assuming that the distance between the rope of the Descending Device is r1=0.2 m from the center of the circular shaft, the radius of the brake wheel is r2=0.1 m, the coefficient of static friction µs=0.4, the coefficient of dynamic friction µk=0.35, and the gear reduction ratio If it is 5:1, then the user's gravity G=m*g=80*9.8=784N, and the generated torque is T1=G*r1=784*0.2=157Nm.

[0027] After changing speed through two 5:1 reduction gears, the torque required on the brake wheel is T2=T1 / 25=6 Nm, the required static friction is: Fs= T2 / 0.1=60N, and the required friction block Pressure Ns= Fk / µs=150 N. When the spring force is greater than 150N, self-locking can be realized. When the spring force is less than 150N, the brake wheel starts to move.

[0028] After the brake wheel moves, the dynamic friction force Fk=Fs=60N required to maintain uniform motion, and the required spring pressure Nk= Fk / µk=172 N. If the spring forc...

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Abstract

The invention discloses a self-locking control device used for a descent control device. The self-locking control device is mainly composed of a spring self-locking unit, a friction block, a fixing baffle and a brake crank. When the self-locking control device is used, the brake crank is held by hands, the friction force can be slowly reduced until a brake wheel starts rotating, acceleration and deceleration can be controlled according to gripping power and can be stopped at any speed at any time, and thus the self-locking control device is convenient to operate, safe and controllable.

Description

technical field [0001] The invention belongs to the technical field of self-locking control of descending devices, and in particular relates to a self-locking control device for descending devices. Background technique [0002] With the development of economy and society, there are more and more high-rise buildings, and various disaster-causing factors are constantly increasing. In the event of a fire and other accidents, even if there are perfect fire-fighting facilities and safe passages, casualties will often be caused by poor daily maintenance. However, most of the high-altitude descending devices used for escape in reality are passively controlling the descent speed. During the initial descent and descent process, the user needs a lot of courage, and there will be some fear, especially if the mental and physical conditions are not good. Users will have a lot of ideological pressure. In addition, in reality, high-altitude fire rescue is still fixed with ropes, and the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B1/10
CPCA62B1/10
Inventor 士贺永刘雪娜士贺飞
Owner 刘雪娜
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