Antitwisting nylon rope
Antitwisting nylon rope, also known as braided antitwisting nylon
rope or torsion - resistant nylon rope, is a special type of rope
with unique properties and wide applications.
I. Structure and Principle of Antitorsion
The antitwisting nylon rope is typically woven with a left - hand
twist and a right - hand twist nylon yarn in a regular (cross -
helical trajectory) pattern. The number of left - hand twist yarns
and right - hand twist yarns is equal, and they are symmetrically
woven. The two sets of helical torques balance each other out due
to opposite directions, endowing the rope with the characteristic
of not rotating when subjected to force.
II. Technical Specifications
Diameter and Mass
The diameter of the nylon yarn used for weaving the antitwisting
nylon rope is measured in millimeters. For example, the strand
diameter is an important parameter. And the unit mass of the
antitwisting nylon rope is calculated as the net mass of the rope
in the unraveled state divided by the actual measured length of the
rope, with the unit being kg/m. According to relevant calculations,
the unit mass=(the total cross - sectional area of the steel wires
in the rope×10 - 6×7850×1.06), and the actual mass (excluding the
coating oil mass) should not exceed its unit mass by±5%.
Classification and Marking
In terms of classification, it can be divided according to the
cross - sectional shape into square and hexagonal shapes. And it
can also be classified by the number of strands, such as 8 -
strand, 12 - strand, 18 - strand, etc. There are specific marking
codes. For example, the first digit is "y" indicating that it is an
antitwisting rope. The second digit represents the appearance
shape, with square shape represented by "s" and hexagonal shape
represented by "l". Subsequent digits represent different
parameters such as nominal square diameter, number of strands,
number of wires in a strand and its structure type, minimum
breaking force of the rope, etc.
III. Applications
In Lifting and Hoisting Operations
In construction sites, ports, and other places where heavy objects
need to be lifted, antitwisting nylon rope is used as lifting
slings or guy ropes. Its anti - torsion characteristic ensures that
when lifting large and heavy - duty objects, the rope will not
twist due to the unbalanced force during the lifting process, thus
ensuring the safety and stability of the lifting operation.
Marine Applications
On ships, it is used for mooring moorings, towing ropes, etc. In
the complex marine environment, the ship is often affected by wind,
waves and currents. The antitwisting nylon rope can effectively
resist the torsional force generated by these external forces,
maintaining the stable mooring of the ship and ensuring the safety
of the towing operation.
Mining and Industrial Fields
In underground mining, it is used for hoisting ore, transporting
materials in inclined shafts, etc. In industrial plants, it can be
used for conveying heavy equipment or materials in some production
lines. Its anti - torsion performance helps to ensure the accurate
operation of the conveying device and the safety of the transported
objects.
Sports and Recreation
In some adventure sports such as rock climbing, sailing, etc.,
antitwisting nylon rope is also used. In rock climbing, it can be
used as a safety rope to ensure that climbers will not be affected
by torsional forces during the climbing process. In sailing, it can
be used as a guy rope for the sailboat to maintain the stability of
the sailboat during sailing.
