Slow-down cam euphroe

Abstract

The invention discloses a slow-down euphroe. A load-bearing rope passes through a fixed pulley and one end of a rope clamp to be connected with a rope fall. A connecting rod is connected with the rope fall. A rope tightening rod is articulated with the rope fall, the end part of the rope tightening rod is articulated with the rope clamp, and a cam is arranged on the end part of the rope tightening rod. Due to the rope tightening rod, the braking of the load-bearing rope is realized by a dead point of the cam at the end part of the rope tightening rod. The cam on the end part of the rope tightening rod is positioned on the dead point by the rope fall under the influence of gravity in an un-operating state, thus the rope tightening rod can be slowed down by uplifting the rope tightening rod, and the safety coefficient is high. The operation of rope tightening rod utilizes the leverage theory so that the operation saves labor. The load-bearing rope is fixed in the high place through the fixed pulley and is convenient to use and is very practical in a place where a rapid withdrawal is required. The bending points of the load-bearing rope in the rope clamp are few, thus the alternating stress can be reduced, and the load-bearing rope will not be easily broken. A damping wheel is arranged in the rope clamp to make the process of slowing down be smoother.

Description

technical field [0001] The invention relates to a slow-down device, in particular to a slow-down cam rope tightener. Background technique [0002] Most of the existing fire escape and rescue equipment are fire-fighting equipment such as rescue ladders. Most of these equipment are bulky and costly to manufacture. They are only suitable for fire-fighting professionals and are difficult to popularize and install. [0003] Chinese patent 02275011.8 discloses a "life-saving slow descent device". The steel wire rope is wound on the rope wheel to drive the friction block and the friction cover to form friction through centrifugal force so as to realize slow descent; "Device", the steel wire rope twists and turns around multiple sheaves, and the movement of the sheaves forms friction to achieve slow descent. [0004] The common feature of the above technical solutions is that the steel wire rope has been bent many times at large angles, thereby forming friction. The steel wire rope...

AI Technical Summary

Problems solved by technology

[0004] The common feature of the above technical solutions is that the steel wire rope has been bent many times at large angles, thereby forming friction. The steel wire rope is subject to alternating stress during use, coupled with the influence of friction and heat, the service life of the steel wire rope is reduced, and there are potential safety hazards.

And because the wire rope needs to be bent multiple times, it is impossible to use a wire rope with a thicker diameter, which limits the number of people or the weight of the items that are slowly lowered each time.

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