Device and method for securing end of braided hoisting rope to lifting device

Patent metadata

Field	Value
Publication number	US-10889476-B2
Application number	US-201816615437-A
Country	US
Kind code	B2
Filing date	May 29, 2018
Priority date	May 31, 2017
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A device for securing an end of a braided hoisting rope to a lifting device includes a tubular fastening frame to be fixed to the lifting device; and a coil spring which is arranged to be installed and fastened over the tubular fastening frame. When the end of a hoisting rope is fastened in place, the hollow, or workable into hollow, end of the hoisting rope is threaded over the windings of the coil spring as the outer surface of the windings and into contact with, or to be brought into contact with the outer periphery of the tubular fastening frame. A method for securing an end of a braided hoisting rope to a lifting device is also disclosed.

First claim

The invention claimed is:

1. A device for securing an end of a braided hoisting rope to a lifting device, comprising:
a tubular fastening frame to be fixed to the lifting device; and
a coil spring arranged to be installed and fastened over the tubular fastening frame;
wherein when an end of the hoisting rope is secured in place, a hollow, or workable into hollow, end of the hoisting rope is threaded over windings of the coil spring as an outer surface of the windings and into contact or to be brought into contact with a surface of the tubular fastening frame.

2. The device as claimed in claim 1 , wherein the tubular fastening frame has a centre hole for attaching the tubular fastening frame to the lifting device.

3. The device as claimed in claim 2 , wherein the centre hole is angular or grooved in a longitudinal direction.

4. The device as claimed in claim 3 , wherein an outer periphery of the tubular fastening frame is provided with a spiral grooving, which meshes with an outer surface of the hoisting rope installed over the windings of the coil spring.

5. The device as claimed in claim 3 , wherein there is a roughening on an outer periphery of the tubular fastening frame.

6. The device as claimed in claim 3 , wherein the coil spring has approximately 2.5 to 3.5 windings over the tubular fastening frame.

7. The device as claimed in claim 2 , wherein an outer periphery of the tubular fastening frame is provided with a spiral grooving, which meshes with an outer surface of the hoisting rope installed over the windings of the coil spring.

8. The device as claimed in claim 2 , wherein there is a roughening on an outer periphery of the tubular fastening frame.

9. The device as claimed in claim 2 , wherein the coil spring has approximately 2.5 to 3.5 windings over the tubular fastening frame.

10. The device as claimed in claim 1 , wherein an outer periphery of the tubular fastening frame is provided with a spiral grooving, which meshes with an outer surface of the hoisting rope installed over the windings of the coil spring.

11. The device as claimed in claim 10 , wherein there is a roughening on an outer periphery of the tubular fastening frame.

12. The device as claimed in claim 1 , wherein there is a roughening on an outer periphery of the tubular fastening frame.

13. The device as claimed in claim 1 , wherein the coil spring has approximately 2.5 to 3.5 windings over the tubular fastening frame.

14. The device as claimed in claim 1 , wherein the coil spring is made of spring steel.

15. The device as claimed in claim 1 , wherein a surface of the coil spring is roughened.

16. The device as claimed in claim 1 , wherein a fastening end of the coil spring is bent and fastened to a recess in a periphery of the tubular fastening frame by a screw fastening.

17. The device as claimed in claim 1 , wherein a fastening end of the coil spring is bent and fastened to the tubular fastening frame by form locking.

18. The device as claimed in claim 1 , wherein the hoisting rope is of a synthetic material.

19. The device as claimed in claim 1 , wherein the fastening of the hoisting rope to the tubular fastening frame and/or to the coil spring is additionally ensured by separate mechanical fastening means.

20. A method for securing an end of a braided hoisting rope to a lifting device, comprising the steps of:
arranging a tubular fastening frame to be fixed to a lifting device;
arranging a coil spring to be installed and fastened over the tubular fastening frame;
arranging a braided hoisting rope, an end of which is formed hollow or formable hollow;
threading an end of the hoisting rope over the coil spring; and
fastening the coil spring over the tubular fastening frame either before threading the end of the hoisting rope over the coil spring or after the hoisting rope has been threaded over the coil spring.

Assignees

• Konecranes Global Corp

Inventors

• Hoover Jack

Classifications

• B66C1/12

  Slings comprising chains, wires, ropes, or bands; Nets (article side grippers suspended by ropes or chains from crane hooks B66C1/42) · CPC title

• B66B7/08 Primary

  for connection to the cars or cages, e.g. couplings · CPC title

• B66D1/34 Primary

  Attachment of ropes or cables to drums or barrels · CPC title

• F16G11/00 Primary

  Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes (attaching ropes or cables to lift cars or cages B66B7/08, to winch drums or barrels B66D1/34; ground anchors E02D5/00; anchoring devices for prestressed members E04C5/00; rope clamps in earth drilling E21B19/12) · CPC title

• B66B11/0075

  with hoisting rope or cable positively attached to a winding drum · CPC title