Abst:Mountaineering equipment. There are two main ropes and auxiliary ropes. The length of the main rope is 60-100 meters, the diameter is about 10 mm, the
Mountaineering equipment. There are two main ropes and auxiliary ropes. The length of the main rope is 60-100 meters, the diameter is about 10 mm, the weight per meter is about 0.08 kg, and the tensile strength is not less than 1800 kg. In the past, jute was mostly used for production, but nylon fibers have recently been used as raw materials. There is also a main rope with a diameter of 8-9 mm, which weighs 0.06 kg per meter and has a tensile strength of not less than 1600 kg, which is used for climbing steep and dangerous rock walls. The length of the auxiliary rope is determined according to the activity requirements of each region. There is no uniform specification. The diameter of the rope is 6-7 mm, the weight per meter is not more than 0.04 kg, the tensile strength is not less than 1,200 kg, and the raw materials are the same as the main rope.
For self-protection and the use of various auxiliary knots on the main rope for protection, as well as crossing the river with rope bridges, and transporting materials with traction rope bridges.As we all know, the UIAA certified DYNAMIC power rope mainly has two indicators, the first impact force (IMPACT FORCE) and the number of UIAA falls (UIAA FALLS), but most domestic climbers do not understand that there are three indicators that are also the key to choosing a climbing power rope. The three indicators are: anti-cutting index, abrasion resistance index, and water resistance. According to the statistics of domestic climbers, more than 90% of climbing power ropes have been worn out before the UIAA FALLS life span, which is far from reaching the index requirements. Therefore, wear resistance and waterproofness are factors that must be considered when choosing a climbing rope.Anti-cutting indexThe sharp angle will have fatal consequences for the horizontal cutting of the rope. It is easy to use a sharp point when the rope is carrying weightThe object cut the rope. In UIAA's standard anti-cutting test, it is required to drop an 80 kg weight from a height of 5 meters, and the rope is cut on the edge of a sharp object with a radius of 5 mm placed laterally. In the first such experiment, the rope should not be damaged. Only in this way can it pass the anti-cutting index test. The anti-cutting index of climbing ropes of different brands varies greatly. For example, the EDEIWEISS rope produced in Austria can withstand up to 6-7 times of similar tests. Some types of climbing ropes can even withstand sharp edge cutting experiments with a radius of 0.75mm. Under the circumstances, most of the other climbing ropes were cut.
Tied to the climbing rope, rubbed longitudinally on the rotating sand wheel, until the outer net of the rope is touched (that is, the rope is white as climbers often say). The time the rope is worn out directly reflects the longitudinal anti-wear ability of the rope. Generally speaking, the climbing power rope with the PERDUR logo has a wear resistance of more than 30% longer than other ropes in similar tests.Waterproof rope is what we often call dry rope. The outer net of this kind of rope is generally treated with TEFLON waterproofing. The rope is being floodedThe strength will decrease by more than 20% after being wet. In mountain climbing, the strength of non-waterproof ropes will be greatly reduced after being soaked by snow water, which is very dangerous. Practice has proved that dry rope has the following obvious advantages: (1) Not only does it prevent water from entering the inner core, but the outer net will quickly dry out after being soaked by water. (2) The weight changes little after immersion. (3) It rarely freezes hard after being immersed in water. (4) Longer service life.In addition, the diameter of the power rope of UIAA1 is generally from 9.9-11MM, and the use of these ropes is also very different. Generally speaking, 11mm or 10.5mm ropes are used for BIG WALL or rock climbing, and 10mm or 9.9mm ropes are lighter and are mostly used for mountaineering. It is best to use dry rope for mountain climbing, big wall or ice climbing.