Belt end connection for fastening a belt end in an elevator installation, and method for protecting and checking a belt end connection in an elevator installation

• US 20060054468A1
• Filed: 08/31/2005
• Published: 03/16/2006
• Est. Priority Date: 09/13/2004
• Status: Active Grant

• Current Assignee: Inventio AG (Schindler Holding AG)
• Original Assignee: Inventio AG (Schindler Holding AG)
• Inventors: Ach, Ernst
• Granted Patent: US 7,469,774 B2
• Time in Patent Office: Days
• US Class Current: 198/844.200
• CPC Class Codes: B66B 7/085 Belt termination devices
• CPC Class Codes: Y10T 24/3909 Plural-strand cord or rope
• CPC Class Codes: Y10T 24/3969 Sliding part or wedge
• CPC Class Codes: Y10T 24/3971 Rope looped about movable member
• CPC Class Codes: Y10T 24/3996 Sliding wedge

Abstract

A belt end connection for fastening a support belt end in an elevator installation and a method for protecting and checking a belt end connection in an elevator installation includes a twisting prevention device that prevents twisting of the belt end connection about the longitudinal axis thereof. A wedge retains the support belt end in a wedge pocket and is secured by a loss prevention device against slipping out of the wedge pocket. The twisting prevention device and/or the loss prevention enable efficient protection of the support belt and/or of the belt end connection against damage and make possible efficient checking and control of the belt end connection.

Claims

1. An apparatus for fastening an end of a support belt in an elevator installation comprising:

a belt end connection for attachment to an end of an elevator support belt; and

a twisting prevention device for attachment to one of said belt end connection and the support belt adjacent said belt end connection for preventing twisting of said belt end connection about a longitudinal axis thereof.

2. The apparatus according to claim 1 wherein said twisting prevention device is formed as a flat profile member in area contact with the support belt.

3. The apparatus according to claim 1 wherein said twisting prevention device is fastened between a load-bearing run and an idle run of the support belt.

4. The apparatus according to claim 1 wherein said twisting prevention device includes a pair of members and the support belt is fastened between said pair of members.

5. The apparatus according to claim 1 wherein said twisting prevention device is shaped to embrace the support belt.

6. The apparatus according to claim 1 wherein said twisting prevention device connects at least two of the support belts together.

7. The apparatus according to claim 1 wherein said twisting prevention device connects at least one of the support belts with a part of an elevator installation.

8. The apparatus according to claim 7 wherein said twisting prevention device is shaped to connect to a rail of the elevator installation.

9. The apparatus according to claim 1 including at least one cable connector fastening said twisting prevention device to the support belt.

10. The apparatus according to claim 1 wherein the support belt includes at least two strands spaced from one another and a casing separating said stands from one another and enclosing said strands, said cable casing being formed of one of a thermoplastic material and an elastomer, and a width of the support belt being at least twice a thickness of the support belt.

11. An apparatus for fastening an end of a support belt in an elevator installation comprising:

a belt end connection having a wedge pocket formed therein;

a wedge received in said wedge pocket with an end of the support belt; and

a loss prevention device attached to said belt end connection for preventing said wedge from slipping out of said wedge pocket.

12. The apparatus according to claim 11 wherein said loss prevention device is attached to a support bolt of said belt end connection with a support bolt securing means securing said support bolt against rotation.

13. The apparatus according to claim 12 wherein said support bolt is a threaded bolt.

14. The apparatus according to claim 11 wherein the support belt includes at least two strands spaced from one another and a casing separating said stands from one another and enclosing said strands, said cable casing being formed of one of a thermoplastic material and an elastomer, and a width of the support belt being at least twice a thickness of the support belt.

15. A method of protecting a belt end connection used for fastening an end of a support belt in an elevator installation comprising the steps of:

a. attaching a belt end connection to an end of an elevator support belt;

b. attaching a twisting prevention device to one of the belt end connection and the support belt adjacent the belt end connection; and

c. preventing twisting of the belt end connection about a longitudinal axis thereof by attaching the twisting prevention device to one of another belt end connection, another support belt adjacent the another belt end connection and a part of an elevator installation.

16. The method according to claim 15 checking for a correct tensile stress of the support belt by observing a position of the twisting prevention device.

17. The method according to claim 15 including the steps of:

c. forming a wedge pocket in the belt end connection;

d. inserting the end of the support belt a wedge in the wedge pocket; and

e. attaching a loss prevention device to the belt end connection to prevent the wedge from slipping out of the wedge pocket.

18. A method of fastening a belt end connection to an end of a support belt in an elevator installation comprising the steps of:

forming a wedge pocket in the belt end connection;

inserting the end of the support belt a wedge in the wedge pocket; and

attaching a loss prevention device to the belt end connection to prevent the wedge from slipping out of the wedge pocket.

19. The method according to claim 18 including forming the loss prevention device to control a correct seat of the wedge in the wedge pocket.

20. The method according to claim 18 including attaching a twisting prevention device to the belt adjacent the belt end connection for checking for a correct tensile stress in the support belt.