How to classify protectors and descenders for Climbing Climbing

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The first thing to be clear is that there are two types of devices: the protector and the descender. The protector can be lowered in addition to the protection, but the descender may not be able to protect in addition to falling.

At present, we have used three kinds of drop and protectors; word loops, ATCs, and mechanical brakes.

1; word loop protector

The word ring type protector is the most common protector descender. Its feature is that it has no complicated mechanical mechanism and no mechanical failure occurs during use. The use of the word ring is also relatively simple, it is a symmetrical symmetrical closed metal ring, there is no distinction between the brake end and the climbing end, when the rope is installed as long as the usual method of super work on it. The different shapes are designed for adjusting the angle of deformation of the rope and increasing the size of the friction, such as C-type and D-type.

Use aspects:;; The diameter of the string used for the string is not particularly high, the scope of application is relatively large. For example, A-type;; word ring of large rings can be suitable for more than 8.3mm of rope, in turn, A-type small ring is suitable for 8.3mm below the rope.

2. ATC type protector descender

ATC is the most widely used class of protector descenders in addition to subrings in recent years. It is much simpler than the structure of the mechanical protector, and the operation is as simple as the word loop. However, the biggest advantage compared with the word ring is that the rope is not easily deformed after being over-locked, resulting in curling. In addition, ATC is based on the brake end pressure to generate rope type and increase the friction, so ATC moves both the brake end and the climbing end. When attaching the rope, pay attention to the rope direction required by the legend on the protector.

Uses: ATC requirements for the diameter of the rope used;; strict word ring, generally 8.3mm-12mm such as E / F / H type. However, if the ATC needs to match a small diameter rope, select a small-diameter ATC. For example, G and H, G's diameter is 7.5mm-8.2mm, H's diameter is 8.1mm-11mm.

3. The mechanical brake type descender is more complicated than the word type ring protector and the ATC type protector. The operation of the mechanical brake type protector is much more complicated. In particular, there are very strict rules on the installation of ropes, and if they are wrong, they can directly lead to fatal dangers.

The use of mechanical brake protectors is quite different from that of sub-rings and ATC-type protectors. They are generally used only for descent (single rope) and top rope protection (single rope). The most prominent advantage is that it can be self-locking and can be controlled like a stop by controlling the free rope end by hand to control the descent speed.

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