Performance of The HSA Anchor Under Load In Shallow Holes A further goal of these investigations was to determine whether the anchor traditionally used for this fastening (HSA M12x100 in a hole drilled to a depth of 95mm) could be replaced by the HSA M12x80 in a 75mm hole, without failure of the anchor used for rail fastening.
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In 2009, in our laboratory which is accredited in accordance with the DIN EN ISO/IEC 17025 standard for the execution of mechanical-technological analyses of fastening methods and materials, we took the opportunity to assemble a complete rail fastening arrangement as a system and to subject it to dynamic and static loading at the rail in order to investigate the behavior of the system and the anchor in terms of elastic and plastic deformation as well as its failure mode and characteristics. This was already indicated in the Elevcon2006 paper “Dynamic Design for Elevator Anchoring To Buildings”. rail clips, bracket, connecting parts and the anchor, should be designed as a complete system. With a view to achieving optimum design of the guide rail fastenings on the shaft wall with regard to reliable transfer of the static and dynamic forces that occur, economical use of materials and efficient installation, the complete connecting structure, i.e.
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When the dynamic load is transferred to the anchor by a non-rigid system, the forces the anchor is required to transfer to the wall are different to those presumed in a design based on a rigid bracket. Whether the rail fastening brackets frequently used in practice actually behave as a rigid system when under load can be called into question and this is pointed out in the Elevcon 2006 paper (Figure 1).
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Hilti anchors 15mm software#
The design software proposed for this simplifies the situation by regarding the bracket connecting the point at which the forces are induced (rail) with the anchor as a rigid structure. The Elevcon2006 paper “Dynamic Design for Elevator Anchoring To Buildings” describes the design of anchors used to fasten guide rails subject to dynamic loading to concrete walls in elevator shafts. Finally, the consequences an effective and cost efficient rail fastening system have for design are also discussed. The results of practical tests disclose the failure mode of the various components of the rail fastening system and identify those that may cause a breakdown of the complete fastening system. This paper discusses the distribution of forces in the complete rail fastening system (rail clips, brackets and wall anchors) based on loads applied to the cabin rail.
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Hilti conducted an analysis of how the complete rail fastening system acts under loading. Key Words: Anchoring design, displacement, fastening system, failure load, pretension AbstractĬonventional elevator design practice considers rail clips, brackets and rail anchors as separate units. It is a reprint with permission from the International Association of Elevator Engineers (website: This paper is an exact reprint and has not been edited by ELEVATOR WORLD. This paper was presented at Lucerne 2010, the International Congress on Vertical Transportation Technologies and first published in IAEE book Elevator Technology 18, edited by A. This paper provides an example of conventional elevator design practice pertaining to rail clips, brackets and rail anchors as separate units.