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Elevator rope and method of manufacturing said elevator rope

A technology for elevator ropes and steel cords, which is applied in the field of elevator ropes and can solve problems such as cracks in the tearing force coating and rising shear force

Active Publication Date: 2017-08-29
BEKAERT ADVANCED CORDS AALTER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Another problem that sometimes arises with high tensile cords with an elastomer sheath is that due to compression of the sheath and / or relative movement of the strands during use, shear forces in the elastomer can rise above tear forces and cracks in the coating

Method used

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  • Elevator rope and method of manufacturing said elevator rope
  • Elevator rope and method of manufacturing said elevator rope
  • Elevator rope and method of manufacturing said elevator rope

Examples

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Embodiment Construction

[0068] In the first example of the present invention ( Figure 1a and b), the following types of steel cords were made:

[0069] {[(0.34+6×0.31) 12.5s +6×(0.25+6×0.25) 12.5z ] 25s +

[0070] 7×(0.34+6×(0.31|0.33|0.25) 20s} 50Z

[0071] Six 0.31 diameter wires are twisted in the "s" direction with a lay length of 12.5 around a 0.34 diameter center core wire. On this core strand, 6 inner layer strands are cabled with a lay length of 25 in the s direction (with a core monofilament of 0.25, around the core monofilament of 0.25, 6 are twisted with a lay length of 12.5 in the z direction 0.25 outer monofilament). Finally around the core strand seven outer strands twisted in parallel in a Valenton configuration with a 0.34 core monofilament surrounded by 6 0.31 monofilaments are closed at a lay length of 50 in the Z direction, at On top of the six 0.31 monofilaments, 6 alternating monofilaments of 0.33 and 0.25 were twisted in the "s" direction with a lay length of 20. So 50...

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Abstract

An elevator rope (100) comprises a steel cord (114) and an elastomer jacket (140) surrounding the steel cord. One or more yarns (120, 122) are wrapped or braided or knitted around the steel cord before the elastomer jacket is applied. The yarns are therefore integrated into the polymer jacket. The yarns induce a pattern at the surface of the polymer jacket. By amending the yarn structure, the surface pattern of the polymer jacket can be changed. This has an implication on the friction of the elevator rope on the sheave on which it is running. Furthermore, the integrated yarns help to preserve the integrity of the elastomer jacket. In a second aspect of the invention a method is claimed wherein first one or more yarns are wrapped, braided or knitted around the steel cord prior to extrusion of the elastomer. The yarn mantle ensures a good centricity of the elastomer jacket and an improved processability of the elevator rope.

Description

technical field [0001] The present invention relates to elevator ropes for use in elevators for people, goods, storage and any other application like this. Furthermore, a method for producing such an elevator rope is disclosed. Background technique [0002] When the June 1995 "Directive 95 / 16 / EC of the European Parliament and of the Council concerning lifts concerning lifts" came into force on 1 July 1997, it sparked a series of innovations in the lift sector within the European Union. Since the ban on fine high tensile wires as enshrined in EN 81-1 is now lifted, it is possible to evaluate other different tension members with these types of wires. [0003] Basically two development trajectories have emerged. In a first track, the steel cords were replaced by thin strips comprising several fine steel cords constructed of fine and highly resistant drawing wires and encased in a polymer sheath (WO 99 / 43589). In the second track, smaller diameter steel wire ropes with or wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D07B1/16B66B7/06
CPCB66B7/06D07B1/162D07B1/0673D07B2205/3007D07B2205/3003D07B2205/2096D07B2205/2082D07B2205/205D07B2201/2089D07B2201/2088D07B2201/2087D07B2205/2003D07B2205/106D07B2205/10D07B2201/2098D07B2201/2092D07B2201/209D07B2401/205D07B2501/2007D07B2201/20907D07B2801/22
Inventor V·范沃森霍夫H·罗美尔
Owner BEKAERT ADVANCED CORDS AALTER NV
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