Traction device, traction system incorporating said traction device and an elevator arrangement incorporating said traction system

摘要

A traction device includes tension members (2) coated with an elastomer material to form jacketed tension members (3). The jacketed tension members (3) are arranged next to each other in a plane in the cross section of the traction device, at such a distance from each other that there is a clear space (6) between each two mutually adjacent ones of the jacketed tension members (3). The jacketed tension members (3) are connected at the back thereof by a back layer. The clear space (6) begins on the side facing away from the back layer (4) and extends at least beyond the center point (5) of the tension member, and the ratio of the second diameter (d2) of the jacketed tension member (3) in relation to the first diameter (d1) of the tension member (2) is between 1.05 and 2.25. The invention is also directed to a traction system which includes the traction device which can be driven by at least one traction sheave (9), and each jacketed tension member (3) engages in a corresponding groove (10) of the traction sheave (9). The back layer (4) is arranged on the side of the jacketed tension members (3) that faces away from the side engaging in the grooves (10) of the traction sheave (9). At least one tension member (2) engages in the corresponding groove (10) of the traction sheave (9) by between 5% and 25% of its diameter (d1).

主权项

1. A traction device comprising:
a cross section defining a plane; a plurality of tension members each having a first diameter (d1); an elastomer material configured as a jacketing of said tension members so as to form a plurality of jacketed tension members; said jacketed tension members having respective outer surfaces and being arranged one adjacent the other in said plane of said cross section and said jacketed tension members each having a second diameter (d2); said jacketed tension members having a back side and a front side and being arranged so as to define a clear space between each two mutually adjacent ones of said jacketed tension members; a back layer connecting said jacketed tension members together at said back side of said jacketed tension members; said jacketed tension members having respective center points conjointly defining a center line; said jacketed tension members being all of like configuration below said center line and said clear spaces extending from said front side of said jacketed tension members and to beyond said center line toward said back side; said second diameter (d2) of said jacketed tension members having a ratio to said first diameter (d1) of said tension members between 1.2 and 1.6; and, said ratio (d2/d1) being constant up to said center line whereat said outer surfaces intersect said center line and whereat respective tangents drawn to said outer surfaces are perpendicular to said center line and are mutually parallel.