Automatic-control constant-speed descending device

Abstract

The invention provides an automatic-control constant-speed descending device. A reel is suspended or supported on a cross rod of a holder through elastic mechanisms mounted on a center shaft of the reel; two groups of elastic mechanisms are mounted on two sides of the reel, respectively; the two ends of the center shaft extend into sliding grooves of two uprights of the holder, respectively; when the reel is under a gravity loading effect, the reel is capable of rotating along with the center shaft relative to the elastic mechanisms and capable of sliding downwards along the sliding grooves to stretch or compress the elastic mechanisms; a hydraulic damping mechanism is arranged such that a resistance torque applied to the center shaft is higher when the elastic mechanisms are stretched or compressed to a greater extent, and the resistance torque applied to the center shaft is lower when the elastic mechanisms are stretched or compressed to a smaller extent, thereby maintaining constant-speed rotations of the reel. The automatic-control constant-speed descending device does not need power and manual braking and is capable of keeping constant-speed descending under different gravity loads.

Description

technical field [0001] The present invention relates to a device for controlling slow load drop, specifically a mechanical automatic control uniform drop device, which can drive a hydraulic damping mechanism through elastic deformation caused by gravity load, so as to offset the hydraulic damping effect and the acceleration of gravity , so as to achieve the purpose of uniform decline. Background technique [0002] In the prior art, there are many devices used to control the slow descent of loads. This kind of device can be applied to escape from high altitude slow descent, mine rescue, slow descent of cranes, etc. The current high-rise slow descent escape devices are mainly electromechanical control, mechanical Friction damping, hydraulic damping, magnetic damping four types: [0003] 1. Electromechanical transmission type descending device: [0004] It is easier to control the uniform speed of the electromechanical transmission type high-level slow-down escape device, but...

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Problems solved by technology

[0013] From the above analysis, it can be seen that the electromechanical transmission type descending device cannot work in the state of no electricity, and has great limitations.

The mechanical friction damping type, hydraulic damping type, and magnetic damping type all have fatal weaknesses. They can only achieve buffered descending speed, and cannot control the descending speed evenly. Escapers still face life-threatening when using this product.

The operation of some descending devices is relatively complicated, and the audience of the descending devices is relatively narrow, and the escape situation of special groups such as the elderly, children, and disabled people has not been considered. There is still a possibility of re-injury

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