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EP-3854741-A1 - ELEVATOR BELT SURFACE PROTECTION FOR INSTALLATION

EP3854741A1EP 3854741 A1EP3854741 A1EP 3854741A1EP-3854741-A1

Abstract

A belt of an elevator system includes one or more tension elements (24) extending longitudinally along a length of the belt, and an elastomeric jacket (28) at least partially enveloping the one or more tension elements (24). The jacket (28) defines a traction side (30) configured to be interactive with a traction sheave of the elevator system and a back side (34) opposite the traction side (30). A protective tape (60) is applied to the elastomeric jacket (28) at the back side (34). A method of assembling an elevator system includes forming a belt, and installing the belt in a hoistway of the elevator system. One or more additional components of the elevator system are installed in the hoistway. A protective tape (60) is removed from a jacket (28) of the belt after installation of the one or more additional components is completed.

Inventors

  • CHANG XIAOYUAN
  • YANG HONG

Assignees

  • OTIS ELEVATOR CO

Dates

Publication Date
20210728
Application Date
20201222
Priority Date
20200124

Claims (15)

  1. A belt (16) of an elevator system (10), comprising: one or more tension elements (24) extending longitudinally along a length of the belt (16); an elastomeric jacket (28) at least partially enveloping the one or more tension elements (24), the jacket (28) defining a traction side (30) configured to be interactive with a traction sheave (52) of the elevator system (10) and a back side (34) opposite the traction side (30); and a protective tape (60) applied to the elastomeric jacket at the back side.
  2. The belt (16) of claim 1, wherein the protective tape (60) is a clean peel tape.
  3. The belt (16) of any one of claim 1 or claim 2, wherein the protective tape (60) includes: a protective layer (62) configured to be one or more of abrasion resistant, scuff resistant or break resistant; and an adhesive layer (64) disposed between the protective layer (62) and the jacket (28) to secure the protective tape (60) to the jacket (28).
  4. The belt (10) of claim 3, wherein the protective layer (62) includes a high strength polymer material with reinforcement; optionally wherein the protective layer (62) includes a polypropylene with glass yarn reinforcement.
  5. The belt (10) of any one of claim 3 or 4, wherein the adhesive layer (64) has multiple layers.
  6. An elevator system (10), comprising: a hoistway (12); an elevator car (14) movable along the hoistway (12); a belt (16) operably connected to the elevator car (14) to move the elevator car (14) along the hoistway (12), the belt (16) including: one or more tension elements (24) extending longitudinally along a length of the belt (16); an elastomeric jacket (28) at least partially enveloping the one or more tension elements (24), the jacket (28) defining a traction side (30) configured to be interactive with a traction sheave (52) of the elevator system (10) and a back side (34) opposite the traction side (30); and a protective tape (60) applied to the elastomeric jacket (28) at the back side (34).
  7. The elevator system (10) of claim 6, wherein the protective tape (60) is a clean peel tape; and/or wherein the protective tape (60) includes: a protective layer (62) configured to be one or more of abrasion resistant, scuff resistant or break resistant; and an adhesive layer (64) disposed between the protective layer (62) and the jacket (28) to secure the protective tape (60) to the jacket (28).
  8. The elevator system (10) of claim 7, wherein the protective layer (62) includes a high strength polymer material with reinforcement; optionally wherein the protective layer (62) includes a polypropylene with glass yarn reinforcement.
  9. The elevator system (10) of any one of claims 7 or 8, wherein the adhesive layer (64) has multiple layers.
  10. A method of assembling an elevator system (10), comprising: applying a protective tape (60) to an elastomeric jacket (28) at a back side (34) of a belt (16), the belt (16) including: one or more tension elements (24) extending longitudinally along a length of the belt (16); and an elastomeric jacket (28) at least partially enveloping the one or more tension elements (24), the jacket (28) defining a traction side (30) configured to be interactive with a traction sheave (52) of the elevator system (10) and a back side (34) opposite the traction side (30).
  11. The method of claim 10, wherein the protective tape (60) is applied to the jacket (28) via one of a roll or a precut length of protective tape (60).
  12. The method of any one of claims 10 or 11, wherein the protective tape (60) is a clean peel tape; and/or wherein the protective tape (60) includes: a protective layer (62) configured to be one or more of abrasion resistant (64), scuff resistant or break resistant; and an adhesive layer (64) disposed between the protective layer (62) and the jacket (28) to secure the protective tape (60) to the jacket (28).
  13. The method of claim 12, wherein the protective layer (62) includes a high strength polymer material with reinforcement; optionally wherein the protective layer (62) includes a polypropylene with glass yarn reinforcement.
  14. The method of any one of claims 12 or 13, wherein the adhesive layer (64) has multiple layers.
  15. The method of any one of claims 10 to 14, further comprising: installing the belt (16) in a hoistway (12) of the elevator system (10); installing one or more additional components of the elevator system (10) in the hoistway (12); and removing the protective tape (60) from the jacket (28) after installation of the one or more additional components is completed.

Description

BACKGROUND Exemplary embodiments pertain to the art of elevator systems. More particularly, the present disclosure relates to health monitoring of tension members of elevator systems, for example, of coated belts or ropes. Elevator systems utilize one or more tension members operably connected to an elevator car and a counterweight in combination with, for example, a machine and traction sheave, to suspend and drive the elevator car along a hoistway. In some systems, the tension member is a belt having one or more tension elements retained in a jacket. The tension elements may be formed from, for example, steel wires or other materials, such as a carbon fiber composite. The tension elements support the load and the jacket holds the tension elements and transfers shear forces to the traction sheave. Handling of the belt during installation of the belt can result in damage to the belt, and the belt may be further damaged during installation of other elevator system components in the hoistway. Such damage may include cracks in the jacket and more severe damage such as broken or damaged tension elements. The belt damage has significant impact on belt life and replacement cost. BRIEF DESCRIPTION In one embodiment, a belt of an elevator system includes one or more tension elements extending longitudinally along a length of the belt, and an elastomeric jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A protective tape is applied to the elastomeric jacket at the back side. Additionally, in this or other embodiments the protective tape is a clean peel tape. Additionally or alternatively, in this or other embodiments the protective tape includes a protective layer configured to be one or more of abrasion resistant, scuff resistant or break resistant, and an adhesive layer located between the protective layer and the jacket to secure the protective tape to the jacket. Additionally or alternatively, in this or other embodiments the protective layer includes a high strength polymer material with reinforcement. Additionally or alternatively, in this or other embodiments the protective layer includes a polypropylene with glass yarn reinforcement. Additionally or alternatively, in this or other embodiments the adhesive layer has multiple layers. In another embodiment, an elevator system includes a hoistway and an elevator car movable along the hoistway. A belt is operably connected to the elevator car to move the elevator car along the hoistway. The belt includes one or more tension elements extending longitudinally along a length of the belt and an elastomeric jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A protective tape is applied to the elastomeric jacket at the back side. Additionally, in this or other embodiments the protective tape is a clean peel tape. Additionally or alternatively, in this or other embodiments the protective tape includes a protective layer configured to be one or more of abrasion resistant, scuff resistant or break resistant, and an adhesive layer located between the protective layer and the jacket to secure the protective tape to the jacket. Additionally or alternatively, in this or other embodiments the protective layer includes a high strength polymer material with reinforcement. Additionally or alternatively, in this or other embodiments the protective layer includes a polypropylene with glass yarn reinforcement. Additionally or alternatively, in this or other embodiments the adhesive layer has multiple layers. In yet another embodiment, a method of assembling an elevator system includes applying a protective tape to an elastomeric jacket at a back side of a belt, the belt including: one or more tension elements extending longitudinally along a length of the belt; and an elastomeric jacket at least partially enveloping the one or more tension elements, the jacket defining a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. Additionally or alternatively, a method of assembling an elevator system includes forming a belt including one or more tension elements extending longitudinally along a length of the belt, and an elastomeric jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A protective tape is applied to the elastomeric jacket at the back side. The belt is installed in a hoistway of the elevator system. One or more additional components of the elevator system are installed in the hoistwa