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What are the cautions for the use of ship supply cables
Time:
2021-05-26
The cable is mainly used in ship outfitting, fishing, port loading and unloading, power construction, oil exploration, national defense, military industry, sporting goods and other fields. Its structure is divided into three strands, eight strands and twelve strands, the product is widely used, with high strength, low elongation, wear resistance, soft and smooth, easy to operate and so on.
The cable is mainly used in ship outfitting, fishing, port loading and unloading, power construction, oil exploration, national defense, military industry, sporting goods and other fields. Its structure is divided into three strands, eight strands and twelve strands, the product is widely used, with high strength, low elongation, wear resistance, soft and smooth, easy to operate and so on.
Cautions for the use of cables: Before each use of cables, the labels should be carefully checked to see if there are any damaged parts such as cut, broken strand, broken wire and kink. If there is no abnormality or defect, the cables can be used normally. When extending the rope, the rope should be released from the end of the rope inside the ring, and the rope should be released counterclockwise. If the rope is unfurled counterclockwise, the rope kink will occur. If a kink occurs, place the rope back into the loop, turn the loop over, and then pull the rope out of the center. Better yet, unroll the rope on a turntable, at which point you can pull the rope out of the outer end. There is a danger if a person is standing under an overstretched rope. If the rope gets out of control, it will cause a huge rebound, possibly causing death or injury.
If the rope is deployed from the spool, the spool itself should rotate freely. This can easily be done by running a tube through the center of the spool, but no vertical spool is allowed to deploy the rope. If the rope is unrolled from the pulley device, the pulley diameter D to the rope diameter D ratio should exceed 5, but for some high performance fiber rope the ratio can reach 20. For the rope, it is suggested that the diameter of the pulley groove is 10%-15% larger than the diameter of the rope. If the radian of the rope in contact with the wheel groove is 150 degrees, the rope can achieve the best stress state, and the height of the pulley flange should be at least 1.5 times the diameter of the rope to prevent the rope from running out of the pulley. In addition, the pulley should be checked regularly and the bearing should be maintained regularly to ensure the smooth rotation of the pulley.
The cable should be scrapped or discontinued in the following situations: the cable appears obviously burnt or molten; The straight-line distance is equal to the length of the cable, and the volume of the surface yarn or strand is reduced by 10%; Exposure of cables to extreme temperatures beyond the range required; UV exposure degradation, the surface of the yarn into fragments; Cables appear in severely damaged areas of thermal melting, hardening, and flattening; Melting or fusion affects more than 20% of the cord yarn.
According to the weaving process can be divided into: three strands of rope, six strands of rope, eight strands of rope, 12 strands of rope, 16 strands of rope, 24 strands of rope, double layers of woven rope, etc.
According to the raw materials can be divided into: polypropylene filament rope, polypropylene rope, polyester filament rope, polyamide multifilament rope (nylon rope), vinylon rope, aramide rope, high polymer polyethylene (denimar) rope, sword hemp rope, Manila rope, tabby rope, etc.
According to the use can be divided into: Marine cable, power rope, craft rope, industrial rope, fire rope, military rope, climbing rope, flag rope, towing rope, safety rope, traction rope and so on.
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