High Duty-Cycle Extended Travel Length Carrier Systems
DESIGN CONSIDERATIONS - Section 8
These general guidelines should be considered when using an extended travel cable and hose carrier system in a high duty-cycle application.
■ Use a flat and level guide channel with its side walls consistently parallel to each other and at the prescribed distance (width) between side walls to correctly match the carrier system's overall width. ■ The machinery’s moving drive-arm must pass through the full length of travel in consistent alignment with the guide channel. ( 1 ) ■ The machinery’s moving drive-arm must be properly squared up to the carrier system and the guide channel itself (i.e. the drive-arm can not be tipped or twisted out of alignment). ■ A slick (e.g. polished stainless steel), smooth and preferably metallic gliding surface must be utilized on the extended half of the total travel to reduce friction and drag generated from materials used in long travel gliding carrier systems. ( 2 ) Exception “KabelSkate”. ■ The metallic gliding surface located at the extended half of the total travel must be at the same level as the applicable carrier link height. ( 2 ) ■ The distance between the gliding surface (extended half travel) and the carrier system itself (retracted half travel), must be one pitch or less of the applicable carrier link. ( 2 ) ■ The guide channel must be properly and consistently supported from underneath; each section is to be supported in at least 3 places; at either end and in the middle. ( 3 & 4 ) ■ The side walls of each guide channel section must all be in proper end-to-end alignment for the entire length of travel. Side wall edges and section corners should not protrude unevenly from each other. ( 5 ) ■ A special hooded guide channel system on the extended half of travel should be considered on any system when the likelihood of carrier “take-off” is great. (carrier take-off is when the carrier system jumps or climbs-up out of its seated position during high acceleration) ■ The guide channel must always be kept free and clear of all debris. If the likelihood of debris is high, an open bottom design and/or a covered design (for the entire length of travel) are strongly recommended. ■ Luvocom ® snap-on and replaceable glide shoes that are molded from a special KS blend of low- friction materials that include Teflon ® should be utilized. ■ A reduced mounting height equal to 3x the applicable link height must be utilized at the moving end of the carrier system. Note: This will increase the depot length ( UB ) when the carrier system is in its fully retracted position. (see “Design Considerations - Section 9", #19 for more info) ■ The carrier system should have all cable and hose weights evenly distributed, center out. ■ All cables and hoses should (if possible) occupy an individual partitioned space within the carrier “frame stay” or cavity of the carrier system. ( 6 ) ■ All cable and hose lateral free-space allowances should be absolutely no less than outlined in this Technical Handbook. ■ All cable and/or hose vertical cavity free-space allowances are to be absolutely no less than outlined in this Technical Handbook. ■ All cables and hoses must be properly restrained (clamped into place) at both ends of the carrier system using vibration-proof KS strain relief/clamping systems. ( 7 ) ■ If guide channel to tow arm alignment is in question, an innovative KS floating tow arm (KS-FTA) should be used. The KS-FTA accepts limited lateral movements between the chain, which must remain centered and aligned in the guide channel, and the drive arm attached to the machinery ensuring the chain runs properly. ( 8 ) ■ To ensure long term performance, KS designed guide channels are not to be walked-on or have objects placed on or in them.
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Specifications are subject to change without notice. KSA-0810-GC
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