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Your Position: Home - Wires, Cables & Cable Assemblies - What is the difference between cable towline cables and ...

What is the difference between cable towline cables and ...

Author: CC

May. 13, 2024

Understanding the Differences Between Cable Towlines and Drag Chain Cables

Author: EVCOME- EV Chargers Manufacturers

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While it might seem like "drag chain cable" and "drag chain cable" are similar, they have specific differences. Today, we will focus on defining what towline cables are, detailing their components and where they are typically used. Let's explore together.

Definition of Towline Cables

Towline cables are utilized in environments where mechanical equipment modules need to move back and forth. To prevent cables from tangling, getting damaged, breaking, or hanging loosely, these cables are housed in cable towlines for protection, allowing them continuous movement. This special kind of high-rigidity cable, designed to move easily with the towline, is known as a towline cable, though it is also referred to as a drag chain cable or tank chain cable.

Components of Towline Cables

1. Central Compressive Strength

At the core of the cable, real center lines filled to maximum capacity (instead of using waste copper core filled with unnecessary materials) help to maintain the integrity of the strand structure and keep it from dispersing into the cable's central area.

2. Electrical Conductor Structure

Cables must have highly flexible conductors. Typically, a denser conductor means a more flexible cable, but if too thin, the conductor can cause coiling. Through extensive testing, optimal thickness, length, and direction of shielding were determined to ensure the cable’s compressive strength.

3. Copper Core Cable Insulation Layer

Insulation layers within the cable should not stick together, and each transmission line must be supported. High-voltage PVC or TPE materials have been found effective in maintaining stability even with millions of meters in use.

4. Stranded Wire

The stranded wire must be wound around a central point of compressive strength with an optimal diameter. The structure is designed with motion in mind, selecting strands from 12 copper core cables to form the entire twisted wire system.

5. Inner Sheath Armor

An extruded inner sheath, which replaces lesser materials like padding, ensures the twisted wire structure stays intact and doesn’t disperse.

6. Shielding

Better weaving techniques prevent the reduction of EMC protection due to loose plastic ropes and shielding failures. Hand-woven shields provide twist resistance.

7. Outer Sheath

Outer sheaths made from various improved materials serve multiple purposes, such as UV protection, low temperature resistance, and chemical resistance, depending on the specific application. However, they all share high abrasion resistance and non-clinging properties. They are formed under high pressure for toughness and support.

Applications and Features

Towline cables, as next-gen high-toughness adjustment and connection cables, thrive under the stress of mechanical equipment, with a bending radius as small as 7.5 times the diameter. They are used in drag chains or to transport intelligent robot components, operating efficiently even in wet and cold conditions. They can function outdoors, blocking UV rays within suitable temperature ranges. Shielded towline cables, hand-braided with electro-tinned copper, are suitable for environments with high signal interference. They find applications in diagnostic and control pathways, electrical machine controls, automation technology, assembly and production lines, CNC lathes, and drive lines.

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Comprehensive Guide to Moving Cables, Robot Cables, Towline Cables

The jacket material of a cable gives it distinct features, such as UV resistance, low temperature performance, oil resistance, and cost efficiency. However, all cable jackets share common characteristics: high abrasion resistance and non-stick properties. These jackets must offer flexibility coupled with structural support, typically achieved through high-pressure formation techniques, with PVC and PUR as common materials.

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