What is the difference between towline cable and ...
May. 13, 2024
What is the difference between towline cable and ...
The difference between towline cable and towline cable is as follows:
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1. Differences in use environment: drag chain cables are widely used in high bending and continuous motion applications, such as automated industrial systems, production lines, robotic systems, drag chain systems, CNC machine tools, metallurgical industries and other occasions. The towing cable is suitable for the towing system of cranes, electric hoists, hoists and other lifting, long-distance material transportation and processing equipment.
2. Differences in cable performance and structure: towline cables and towline cables are highly flexible mobile cables, which have certain requirements for their flexibility, wear resistance and weather resistance. The difference between the two is that the tow cable has a stronger pulling force and is usually filled with a steel wire rope. The towline cable has higher requirements for bending resistance. Compared with the two, the wire selection and stranding structure of the towline cable are more refined.
3. Differences in cable assembly: drag chain cables are usually placed in drag chain protective shells and are used side by side. The drag chain protective shell can effectively prevent the cables in the drag chain from being twisted, worn, pulled, suspended and scattered, and moved back and forth in the fixed device. The traction cable is suspended and installed and can be folded in half, so it can be used with limited space, such as lateral movement type equipment, which can be used with a range of mobile equipment.
Towline and Terminal Gear - dco.uscg.mil
When selecting a towing system, for pushing ahead, towing along side or towing astern no one size fits all. The rigging, wire and lines required will vary in size composition, construction and strength depending on the towing methodology, dynamic loading and the environment in which it is used.
Breaking strength is the average force at which a product, in the condition it would leave the factory, has been found by representative testing to break, when a constant increasing force is applied in direct line to the product at a uniform rate of speed on a standard pull testing machine. It should be understood that breaking strength, when published by the supplier was obtained in a laboratory under conditions which are almost always impossible to duplicate in actual use.
When choosing wire rope, synthetic and natural fiber lines, and cables, a design or safety factor should be computed by dividing the computed breaking strength by the stated working load, expressed as a ratio. For example 5 to 1, which is a ratio commonly referred to as the safe working load. The safe working load is generally thought of as no more than 1/5 of the lines breaking strength. In other words the wire rope should be 5 times stronger than the expected load. Always use manufacturers breaking strength when available to calculate the safe work load.
The owner, operator, and master should ensure that lines and wires are properly installed so as to guard against damage while in use. They should also identify inspection and retirement criteria and insure that these are communicated to the crew. Crew training on proper care, handling and repair of towing gear should also be addressed.
Tests and inspections of towing gear must occur before the vessel embarks on a voyage of more than 24 hours or when each new master or operator assumes command:
- Visual inspection of tackle
- Connections of bridle and towing pendant, if applicable
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Wire diameter measurement
Procedures addressing emergency situations related to the tow, i.e. lost barge retrieval, are to be developed, and crews are to be properly trained accordingly.
Barge recovery
Barge recovery low speed approach
Barge recovery higher speed approach
Items to check:
- Strength of each component adequate for intended service
- Size, material and condition of towlines, lines, wires, push gear, cables and other rigging appropriate
- Emergency procedures related to the tow / barge retrieval in place and provided to the crew
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What is the difference between towline cabletowline cable and ...
The difference between towline cable and towline cable is as follows:
1. Differences in use environment: drag chain cables are widely used in high bending and continuous motion applications, such as automated industrial systems, production lines, robotic systems, drag chain systems, CNC machine tools, metallurgical industries and other occasions. The towing cable is suitable for the towing system of cranes, electric hoists, hoists and other lifting, long-distance material transportation and processing equipment.
2. Differences in cable performance and structure: towline cables and towline cables are highly flexible mobile cables, which have certain requirements for their flexibility, wear resistance and weather resistance. The difference between the two is that the tow cable has a stronger pulling force and is usually filled with a steel wire rope. The towline cable has higher requirements for bending resistance. Compared with the two, the wire selection and stranding structure of the towline cable are more refined.
3. Differences in cable assembly: drag chain cables are usually placed in drag chain protective shells and are used side by side. The drag chain protective shell can effectively prevent the cables in the drag chain from being twisted, worn, pulled, suspended and scattered, and moved back and forth in the fixed device. The traction cable is suspended and installed and can be folded in half, so it can be used with limited space, such as lateral movement type equipment, which can be used with a range of mobile equipment.
Towline and Terminal Gear - dco.uscg.mil
When selecting a towing system, for pushing ahead, towing along side or towing astern no one size fits all. The rigging, wire and lines required will vary in size composition, construction and strength depending on the towing methodology, dynamic loading and the environment in which it is used.
Breaking strength is the average force at which a product, in the condition it would leave the factory, has been found by representative testing to break, when a constant increasing force is applied in direct line to the product at a uniform rate of speed on a standard pull testing machine. It should be understood that breaking strength, when published by the supplier was obtained in a laboratory under conditions which are almost always impossible to duplicate in actual use.
When choosing wire rope, synthetic and natural fiber lines, and cables, a design or safety factor should be computed by dividing the computed breaking strength by the stated working load, expressed as a ratio. For example 5 to 1, which is a ratio commonly referred to as the safe working load. The safe working load is generally thought of as no more than 1/5 of the lines breaking strength. In other words the wire rope should be 5 times stronger than the expected load. Always use manufacturers breaking strength when available to calculate the safe work load.
The owner, operator, and master should ensure that lines and wires are properly installed so as to guard against damage while in use. They should also identify inspection and retirement criteria and insure that these are communicated to the crew. Crew training on proper care, handling and repair of towing gear should also be addressed.
Tests and inspections of towing gear must occur before the vessel embarks on a voyage of more than 24 hours or when each new master or operator assumes command:
- Visual inspection of tackle
- Connections of bridle and towing pendant, if applicable
Wire diameter measurement
Procedures addressing emergency situations related to the tow, i.e. lost barge retrieval, are to be developed, and crews are to be properly trained accordingly.
Barge recovery
Barge recovery low speed approach
Barge recovery higher speed approach
Items to check:
- Strength of each component adequate for intended service
- Size, material and condition of towlines, lines, wires, push gear, cables and other rigging appropriate
- Emergency procedures related to the tow / barge retrieval in place and provided to the crew
Regulatory Cites:
33 CFR 164.80 Tests, inspections, and voyage planning
46 CFR 140.615 Examinations and tests
46 CFR 140.801 Towing gear
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