From cotton and hemp to nylon, aramid, and polymers, different materials and processes determine the differences in strength, elongation, corrosion resistance, and wear resistance of ropes. To ensure the safe and effective use of ropes in safety, marine, military, mooring, firefighting, mountaineering, off-road and other fields, reasonable selection should be made based on the characteristics and safety requirements of the ropes, following usage standards, and paying attention to non-standard use of ropes. The following provides a detailed explanation of the types and uses of commonly used ropes based on different fields.
Climbing rope
Climbing ropes are important equipment in mountaineering, with the core being climbing techniques such as lifting, reducing, and protecting. The performance and charging time of climbing ropes are three very important performance parameters.
Climbing rope
Modern climbing ropes are all used to add a layer of mesh rope to a few twisted ropes, rather than regular nylon ropes. Flower rope is a power rope with a ductility of less than 8%. Power rope * * * is used for projects that may experience power falls, such as rock climbing, mountaineering, reduction, etc. Generally speaking, white rope is a static rope with a ductility of less than 1% or considered as zero ductility under ideal conditions. Generally used for cave exploration, road repair ropes, and industrial purposes during mountaineering.
Not all climbing ropes can be used separately. The word UIAA ① marked on the rope head can be used separately in areas that are not too steep, with a diameter of 8mm up and down. It only indicates that the strength of the UIAA rope is not enough, and only double ropes can be used at the same time.
Off road series trailer rope
The off-road series usually includes off-road trailer ropes, off-road winch ropes, and off-road soft shackles. The trailer rope is generally made of polyester nylon with a two-layer woven structure, which is sturdy and wear-resistant; The off-road winch rope can be used for off-road vehicles equipped with electric winches for off-road self rescue. The material is * * * molecular weight polyethylene; The soft shackle is made of * * * molecular weight polyethylene fiber and is used to connect the trailer rope to the vehicle body.
Mooring rope
Mooring line is an important part of mooring system, which is used to fix the ship to ensure that it can effectively resist the impact of wind, flow and tidal force under standard environmental conditions during berthing. The accident hazards caused by the breakage of mooring ropes under stress conditions are serious, therefore the requirements for the stiffness, bending fatigue resistance, corrosion resistance, elongation, etc. of the ropes are strict.
***Molecular weight polyethylene rope is the choice for mooring cables. At the same strength, the weight is 1/7 of traditional steel wire rope and can float in water. Diversified structures and rope coatings can be used to improve the performance of cables in expected applications. In practical applications, cable breakage caused by natural factors or improper human operation cannot be ignored, which may cause serious personal injury and equipment damage.
The safe operation of mooring ropes should include but not be limited to the following aspects: selecting cables based on the design breaking force of the ship, so that each rope is at an appropriate stress position; Pay attention to the maintenance of ropes and regularly check the condition of cables; Timely correct mooring cable plans based on climate and sea conditions; Cultivate safety awareness among crew members.