Insert element for guiding a rope or cable, rope or cable guide roller and method of manufacturing an insert element

Abstract

An insert element for guiding a rope or cable, in particular for a cableway installation. The insert element including a surface layer with a first surface layer side configured to come into contact with a rope or cable to be guided, and a second surface layer side opposite the first surface layer side, and an indicator element arranged on and/or in the surface layer, wherein the indicator element is configured to indicate a state of wear of the insert element. A pulley that includes the insert element and a method for manufacturing the insert element are further provided.

1 .- 15 . (canceled) 
     
     
         16 . An insert element for guiding a rope or cable for a cableway installation, comprising:
 a surface layer with a first surface layer side configured to come into contact with a rope or cable to be guided, and a second surface layer side opposite the first surface layer side; and   an indicator element arranged on and/or in the surface layer, wherein the indicator element is configured to indicate a state of wear of the insert element.   
     
     
         17 . The insert element according to  claim 16 , wherein the insert element is formed in one piece. 
     
     
         18 . The insert element according to  claim 16 , wherein the indicator element covers the first surface layer side and/or the second surface layer side at least partially or in sections. 
     
     
         19 . The insert element according to  claim 16 , wherein the surface layer comprises at least one of SBR, NR, NBR, EPDM, CSM, BR and FKM. 
     
     
         20 . The insert element according to  claim 16 , wherein the indicator element comprises at least one of PE, PP, TPE, PA and PETP. 
     
     
         21 . The insert element according to  claim 16 , wherein the indicator element and the surface comparatively layer have different properties, including a different hardness, density, tear resistance, elongation at break, abrasion, rebound elasticity, compression set, tear propagation resistance, glass transition temperature, electrical conductivity and swelling. 
     
     
         22 . The insert element according to  claim 16 , wherein the indicator element comprises at least one of a fabric, at least one thread, a fluorescent material, a colored ink and a foil. 
     
     
         23 . The insert element according to  claim 16 , further comprising:
 at least one conductivity sensor configured to detect a voltage applied to the rope or cable passed through the insert element.   
     
     
         24 . The insert element according to  claim 16 , wherein the indicator element comprises at least one metal rod and/or wire. 
     
     
         25 . The insert element according to  claim 16 , wherein the indicator element is one of a plurality of indicator elements distributed in a radial direction of the insert element, and each indicator element having different properties. 
     
     
         26 . The insert element according to  claim 16 , wherein a ratio of a material thickness of the surface layer and a material thickness of the indicator element in a radial direction of the insert element is in a range from 0.01 to 0.7. 
     
     
         27 . The insert element according to  claim 26 , wherein the ratio is in a range from 0.07 to 0.5. 
     
     
         28 . The insert element according to  claim 27 , wherein the ratio is in a range from 0.1 to 0.3. 
     
     
         29 . The insert element according to  claim 16 , further comprising:
 a fabric layer configured to absorb radial forces, wherein a ratio of a material thickness of the surface layer and a material thickness of the fabric layer in a radial direction of the insert element is in a range from 0.8 to 9.   
     
     
         30 . The insert element according to  claim 29 , wherein the ratio is in a range of from 1 to 8. 
     
     
         31 . The insert element according to  claim 30 , wherein the ratio is in a range of from 2 to 7. 
     
     
         32 . The insert element according to  claim 16 , wherein the surface layer has a guide region and two shoulder regions adjacent to the guide region on the first surface layer side in a cross-section transverse to a rope or cable guide direction, wherein the guide region has a recess which is deepened by a recess spacing relative to at least one of the two shoulder regions, and wherein a ratio of a width of both shoulder regions in a cross-section transverse to the rope or cable guide direction and the recess spacing is in a range from 0.2 to 5. 
     
     
         33 . The insert element according to  claim 32 , wherein the ratio is in a range of from 0.4 to 3. 
     
     
         34 . The insert element according to  claim 33 , wherein the ratio is in a range of from 0.7 to 2.5. 
     
     
         35 . A rope or cable guide pulley, comprising:
 an insert element comprising a surface layer with a first surface layer side, configured to come into contact with a rope or cable to be guided, and a second surface layer side opposite the first surface layer side;   an indicator element arranged on and/or in the surface layer, wherein the indicator element is configured to indicate a state of wear of the insert element; and   a bearing area for rotatable mounting of the rope or cable guide pulley.   
     
     
         36 . A method of manufacturing an insert element for guiding a rope or cable according to  claim 16 , the method comprising:
 providing the indicator element;   applying the indicator element in or on a surface layer; and   vulcanization the indicator element and the surface layer;   wherein the indicator element is configured to indicate a state of wear of the insert element.