Rope for a hoisting device, elevator and use

Patent metadata

Field	Value
Publication number	US-11565912-B2
Application number	US-202017039315-A
Country	US
Kind code	B2
Filing date	Sep 30, 2020
Priority date	Jan 18, 2008
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A hoisting device rope has a width larger than a thickness thereof in a transverse direction of the rope. The rope includes a load-bearing part made of a composite material, the composite material including non-metallic reinforcing fibers, which include carbon fiber or glass fiber, in a polymer matrix. An elevator includes a drive sheave, an elevator car and a rope system for moving the elevator car by means of the drive sheave. The rope system includes at least one rope that has a width that is larger than a thickness thereof in a transverse direction of the rope. The rope includes a load-bearing part made of a composite material. The composite material includes reinforcing fibers in a polymer matrix.

First claim

What is claimed is:

1. A hoisting rope for an elevator, said hoisting rope having a width larger than a thickness thereof in a transverse direction of the hoisting rope, said hoisting rope comprising
one or more load-bearing parts made of a composite material, said composite material comprising reinforcing fibers in a polymer matrix, said reinforcing fibers including carbon fiber or glass fiber,
wherein each load-bearing part consists of the polymer matrix, the reinforcing fibers bound together by the polymer matrix, a coating provided around the reinforcing fibers, and one or more auxiliary materials including a fire retardant within the polymer matrix, and
wherein said reinforcing fibers are substantially mutually non-entangled and parallel to a lengthwise direction of the hoisting rope.

2. The hoisting rope according to claim 1 , wherein, when there are more than one load-bearing parts, the more than one load-bearing parts are spaced from each other.

3. The hoisting rope according to claim 1 , wherein individual fibers of the reinforcing fibers are evenly distributed in said polymer matrix.

4. The hoisting rope according to claim 1 , wherein said reinforcing fibers are bound together as an integral load-bearing part by said polymer matrix.

5. The hoisting rope according to claim 1 , wherein each load-bearing part consists of straight reinforcing fibers parallel to a lengthwise direction of the hoisting rope and bound together by the polymer matrix to form an integral element.

6. The hoisting rope according to claim 1 , wherein, each load-bearing part is an integral elongated body.

7. The hoisting rope according to claim 1 , wherein said coating is a primer to improve chemical adhesion between the reinforcing fibers and the polymer matrix.

8. The hoisting rope according to claim 1 , wherein a structure of the hoisting rope continues as a substantially uniform structure throughout a length of the hoisting rope.

9. The hoisting rope according to claim 1 , wherein a structure of each load-bearing part continues as a substantially uniform structure throughout a length of the hoisting rope.

10. The hoisting rope according to claim 1 , wherein the polymer matrix consists of non-elastomeric material.

11. The hoisting rope according to claim 1 , wherein a coefficient of elasticity (E) of the polymer matrix (M) is over 2 GPa.

12. The hoisting rope according to claim 1 , wherein the polymer matrix comprises epoxy, polyester, phenolic plastic or vinyl ester.

13. The hoisting rope according to claim 1 , wherein over 50% of a cross-sectional square area of each load-bearing part consists of said reinforcing fiber.

14. The hoisting rope according to claim 1 , wherein the reinforcing fibers together with the polymer matrix form an integral load-bearing part, inside which substantially no chafing relative motion between fibers or between fibers and matrix takes place.

15. The hoisting rope according to claim 1 , wherein a width of each load-bearing part is larger than a thickness thereof in a transverse direction of the hoisting rope.

16. The hoisting rope according to claim 1 , wherein the hoisting rope comprises a plurality of load-bearing parts placed mutually adjacently.

17. The hoisting rope according to claim 1 , wherein the hoisting rope further comprises outside the composite material at least one metallic element in the form of a wire, a lath or a metallic grid.

18. The hoisting rope according to claim 1 , wherein each load-bearing part is surrounded by a polymer layer comprising an elastomer.

19. The hoisting rope according to claim 1 , wherein the one or more load-bearing parts comprises a main proportion of a cross-section of the hoisting rope.

20. The hoisting rope according to claim 1 , wherein a structure of the hoisting rope continues as a substantially uniform structure throughout a length of the hoisting rope, and
wherein the hoisting rope comprises a broad surface that is substantially even so as to enable friction-based force-transmitting via the broad surface.

21. The hoisting rope according to claim 1 , wherein each load-bearing part covers an entire cross-section of the hoisting rope.

22. The hoisting rope according to claim 1 , wherein the hoisting rope comprises protrusions or grooves for guiding the hoisting rope.

23. The hoisting rope according to claim 1 , wherein the hoisting rope is provided with a cogged surface to produce a positive contact with a drive sheave.

24. The hoisting rope according to claim 1 , wherein the hoisting rope is symmetrical in a thickness direction thereof.

25. The elevator according to claim 24 , wherein a hoisting height of the elevator is over 75 meters.

26. The hoisting rope according to claim 1 , wherein the coating is a primer arranged on the surface of the reinforcing fibers.

27. An elevator comprising:
a drive sheave;
a power source for rotating the drive sheave;
an elevator car; and
a rope system for moving the elevator car by means of the drive sheave, said rope system comprising at least one hoisting rope, said at least one hoisting rope having a width larger than a thickness thereof in a transverse direction of the at least one hoisting rope, said hoisting rope comprising:
one or more load-bearing parts made of a composite material, said composite material comprising reinforcing fibers in a polymer matrix, said reinforcing fibers including carbon fiber or glass fiber,
wherein each load-bearing part consists of the polymer matrix, the reinforcing fibers bound together by the polymer matrix, a coating provided around the reinforcing fibers, and one or more auxiliary materials including a fire retardant within the polymer matrix, and
wherein said reinforcing fibers are substantially mutually non-entangled and parallel to a lengthwise direction of the hoisting rope.

28. The elevator according to claim 27 , wherein said at least one hoisting rope comprises a plurality of hoisting ropes, each of which is fitted side by side against a circumference of the drive sheave.

29. The elevator according to claim 27 , wherein the hoisting rope passes around a first diverting pulley, on which the hoisting rope is bent in a first bending direction, after which the hoisting rope passes around a second diverting pulley, on which the hoisting rope is bent in a second bending direction, this second bending direction being substantially opposite to the first bending direction.

30. The elevator according to claim 27 , wherein the elevator is implemented without a compensating rope.

Assignees

• Kone Corp

Inventors

• Pelto-Huikko Raimo
• Valjus Petteri
• Honkanen Juha
• Sjödahl Kim

Classifications

• D07B2201/2087

  being of the coated type · CPC title

• D07B2205/2039

  Polyesters · CPC title

• D07B2205/206

  Epoxy resins · CPC title

• Y10T428/249945

  Carbon or carbonaceous fiber · CPC title

• D07B1/22

  Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes · CPC title