How to use boat ropes?

2023-11-30 11:04:01

Precautions for the use of ropes: Before each use of the rope, you should carefully check the markings, labels, insertion rings, and whether there are cuts, broken strands, broken wires, kinks and other damaged parts on the rope body. If there are no abnormalities and defects, It can be used normally; when unfolding the rope, the rope should be released from the end of the rope in the circle, and the rope should be released counterclockwise. If the rope is unrolled in a counterclockwise direction, a rope kink will occur. If a kink develops, the rope should be returned to the loop, turned over, and then pulled out from the center. A better method is to unroll the rope on a turntable, where the rope can be pulled out from the outer ends. If a person stands under an over-tightened rope, it will be dangerous. Once the rope is out of control, a huge pulling force will rebound, which is likely to cause casualties.

Marine cables are mainly used in ship equipment, fishing, port loading and unloading, power construction, oil exploration, national defense industry, sporting goods and other fields. Its structure is divided into three-strand, eight-strand, and twelve-strand ropes. The product is widely used and has the characteristics of high strength, low elongation, wear resistance, softness and smoothness, and easy operation.

If the rope is unrolled from a rope shaft, the rope shaft itself should rotate freely. This is easily done by passing a pipe through the center of the rope shaft. However, it is forbidden to unfold the rope with the rope shaft vertically; if the rope is unrolled from a pulley device, the pulley The ratio of the diameter D to the diameter d of the rope should exceed 5, but for some high-performance fiber ropes the ratio can reach 20. For ropes, it is recommended that the diameter of the pulley groove is 10%-15% larger than the diameter of the rope. If the arc of the rope contacting the wheel groove is 150 degrees, the rope can reach the stressed state. The height of the pulley flange should be at least 1.5 times the diameter of the rope to prevent The rope ran out of the pulley. In addition, the pulleys should be inspected frequently and the bearings should be maintained regularly to ensure smooth rotation of the pulleys.

Ropes should be scrapped or stopped in use if the following conditions occur: the rope is obviously burnt or melted; the linear distance is equal to the length of the rope, and the volume of the surface rope yarn or strand is reduced by 10%; the rope is exposed to extreme temperature environments beyond the range ; Ultraviolet exposure degrades, and the surface of the rope yarn becomes fragmented; the rope appears in severely damaged thermal melting, hardening, and flattened areas; the number of rope yarns affected by melting or fusion exceeds 20%.