Introduction
In the high-speed reciprocating drag chain (cable protection chain), pneumatic hoses and cables are subjected to severe bending, twisting, and friction. Specialized high-flexibility drag chain hoses and their proper installation are the lifeline for ensuring long-term stable operation of the system.
Characteristics of hose specifically designed for drag chains
Superior bending fatigue resistance: Utilizing special modified materials (such as PUR) and reinforced structures, it can withstand millions or even tens of millions of bending cycles without breaking.
Low bending radius: enabling flexible movement within a compact space.
Low elongation and high torsional resistance: Stable length during movement, avoiding interference and entanglement with cables.
Wear-resistant outer coating: Resistant to long-term friction with the inner walls of the drag chain and other cables.
"Ten Dos and Ten Don'ts" for Installation Guidelines Ten points:
Be sure to use hoses clearly marked as "specifically designed for drag chains".
The radius of the hose should be greater than the minimum allowable bending radius of the drag chain.
The hoses in the tow chain must be laid in parallel and must not cross.
Hoses and cables should be separated and fixed with dividers or cable ties to prevent them from getting entangled with each other.
Sufficient slack should be reserved to avoid tension at both ends of the drag chain.
A buffer section should be reserved at the hose connector to prevent the connector from bearing bending moments.
Ensure that the sliding space for the hose within the drag chain is neither too tight nor too loose.
After installation, manually operate the drag chain at a slow speed several times throughout the entire process to check for any interference.
Regularly check the wear condition of the hose surface.
Follow the specific wiring guidelines provided by the equipment manufacturer.
Ten Don'ts:
Under no circumstances should ordinary fixed installation hoses be used as a substitute for hoses specifically designed for tow chains.
Do not force the hose into a fully loaded tow chain.
Do not use rigid connectors in the moving part of the drag chain.
Do not allow the hose to form sharp or S-shaped bends at the port of the drag chain.
Do not bundle hoses of different diameters too tightly; allow them to move independently.
Do not ignore the minimum installation temperature of the hose (the material becomes hard in cold weather and requires preheating).
Do not ignore the bending direction of the hose, which should be consistent with the plane of the drag chain movement.
Do not leave excessive slack in the drag chain to avoid unnecessary folding.
Do not use hoses that have been removed from old tow chains and show signs of fatigue.
Don't overlook the preventive replacement plan for hoses.
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