Why the self-locking brake of the fall arrester must be controlled within 20cm

Many people don't quite understand that the self-locking braking distance of the fall arrester must be controlled within 20cm before the product is qualified. Why should it be scrapped beyond this distance? Next, Crown Airways will answer this question.

First of all, we need to understand the braking principle of the fall arrester. The self-locking braking of the fall arrester is similar to that of the car safety belt. It is the self-locking of the ratchet wheel and pawl under the effect of sudden acceleration. The car is the inertial acceleration under the effect of sudden braking, while the high-altitude fall is the acceleration of gravity. Their principles are the same.

The greater the vertical falling distance, the greater the kinetic energy generated under the acceleration. Once the self locking time of the fall arrester is slow, the human body cannot bear the impact force generated by the greater kinetic energy, but the self locking is formed within a short distance. The impact force generated within this distance will not cause harm to the human body.

The self-locking standard of the fall arrester is 20 cm. The impact force generated by this distance will not exceed 3000 N and will not cause any harm to the human body, which is why the self-locking braking distance must be controlled within 20 cm.