Smart hoisting rope

Patent metadata

Field	Value
Publication number	US-11319667-B2
Application number	US-201816753055-A
Country	US
Kind code	B2
Filing date	Oct 9, 2018
Priority date	Oct 10, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

The present invention concerns a rope health monitoring system and a rope for such rope health monitoring system whereby the rope comprises objects which are remotely detectable, readable and programmable identification (ID) tags and whereby the rope monitoring system comprises said rope, at least one ID tag reader device mounted along said predetermined path of the rope, to detect at least the identity and optionally the historic health status and/or at least one physical rope parameters of the individual rope section provided with and identified by the at least one ID tag, at least one ID tag writing device, to write a new health status of the individual rope section to the at least one ID tag, at least one means to measure at least one rope operation parameter, a computing unit provided with data, whereby the computing unit is equipped with an algorithm capable to compute the relative longitudinal positioning of individual sections of the rope and the additional damage or damages suffered by individual sections of the rope, compute and record the new health status of the individual sections of the rope, store the new health status of the individual section of the rope in the corresponding programmable ID tag of the rope.

First claim

The invention claimed is:

1. A rope for a hoisting apparatus, the rope comprising:
a strength member; and
objects situated at intervals and distributed along the longitudinal dimension of the strength member wherein the objects are remotely detectable, readable, and programmable identification (ID) tags, wherein the rope is virtually separated in individual rope sections, wherein at least one ID tag is provided at each individual rope section, wherein the at least one ID tag identifies the respective individual rope section, wherein the at least one ID tag further stores a health status of the respective individual section of the rope as a parameter or parameters indicating a remaining lifetime of the individual section of the rope.

2. The rope according to claim 1 , wherein the remaining lifetime of the individual rope sections is expressed as a percentage of the mint conditions of a new rope or rope section.

3. The rope of claim 1 wherein the ID tags are located at predetermined intervals and distributed along the longitudinal dimension of an elongated carrier element, wherein the elongated carrier element has a braided construction comprising the ID tags.

4. The rope of claim 3 wherein the elongated carrier element is or forms part of a primary strand of the strength member or wherein the elongated carrier element forms the longitudinal core section of the strength member.

5. The rope of claim 3 wherein the elongated carrier element is a thermoplastic rod comprising the ID tags.

6. The rope according to claim 1 wherein the rope has a length of at least 100 m, a diameter of at least 10 mm, a tenacity of at least 0.8 N/tex, a maximum break load (MBL) of at least 10 kN, at least 50 ID tags distributed along the longitudinal dimension of a braided strength member, wherein the intervals are substantially equal in length and in the range of 0.5 to 5 m.

7. The rope according to claim 1 wherein the remotely detectable objects are passive and/or active ID tags.

8. The rope of claim 1 , wherein the strength member further comprises primary strands comprising high performance yarns having a tenacity of at least 1.0 N/Tex as specified in ASTM D885M.

9. The rope of claim 8 , wherein the high performance yarns are ultra-high molecular weight polyethylene (UHMWPE) yarns.

10. The rope of claim 8 , wherein the strength member is a braided construction and wherein the ID tags are positioned without restraint between the primary strands of the braided strength member.

11. A rope monitoring system for a hoisting apparatus with at least one sheave equipped with a rope, wherein the rope is virtually separated in individual rope sections, wherein the rope comprises objects situated at intervals and distributed along the longitudinal dimension of a strength member of the rope, wherein the objects are remotely detectable, readable, and programmable identification (ID) tags, wherein at least one ID tag is provided at each individual rope section, wherein the at least one ID tag identifies the respective individual rope section, the rope being positioned as a load carrying rope along a predetermined path of the hoisting apparatus and over the at least one sheave,
wherein the rope monitoring system comprises:
at least one ID tag reader device mounted along said predetermined path of the rope, the at least one ID tag reader device configured to detect at least the identity of the individual rope section provided with and identified by the at least one ID tag when traveling along said path,
at least one ID tag writing device mounted along said predetermined path of the rope, the at least one ID tag writing device configured to write a new health status of the individual rope section to the at least one ID tag when traveling along said path,
a computing unit provided with data comprising the predetermined rope path geometry and the identity and position of the at least one ID tag, the computing unit configured to:
process at least one rope operation parameter that has been measured during operation of the rope, wherein the data further comprises the at least one rope operation parameter,
compute based on said data the relative longitudinal positioning of individual sections of the rope in respect of the predetermined path of the hoisting apparatus, and the additional damage or damages suffered by individual sections of the rope during said traveling along said path under said at least one rope operation parameter,
compute and record the new health status of the individual sections of the rope, and
send the new health status of the individual sections of the rope to the corresponding at least one ID tag writing device for storing the new health status of the individual section of the rope in the corresponding at least one programmable ID tag of the rope.

12. The rope monitoring system of claim 11 , wherein the computing unit is further configured to process a physical rope parameter that has been measured during operation of the rope.

13. The rope monitoring system of claim 11 , wherein the at least one rope operation parameter is associated with at least one of the mass of the hoisted load, acceleration of the hoisted load, vibration of the hoisted load, operating direction of the rope, speed of the rope, acceleration of the rope, slippage of the rope, traction to the rope, pressure to the rope, tension of the rope, compression of the rope, and torsion of the rope.

14. The rope monitoring system of claim 11 , wherein the computing unit is further configured to compute and record the new health status of the individual sections of the rope by aggregating the damage or damages suffered by individual sections of the rope to a parameter or parameters indicating a remaining lifetime of the individual section of the rope.

15. The rope monitoring system of claim 14 , wherein the computing unit is further configured to: generate an alerting signal when the remaining lifetime of at least one virtual section of the rope reaches a predefined limit.

16. The rope monitoring system of claim 14 , wherein the remaining lifetime of the individual rope sections is expressed as a percentage of the mint conditions of a new rope or rope section.

17. The rope monitoring system of claim 11 , wherein the computing unit is further configured to compute and record the new health status of the individual sections of the rope by incrementally summing the respective damages of individual virtual sections of the rope for each such section for a predefined time or operation level.

18. The rope monitoring system of claim 11 , wherein:
the at least one ID tag reader device is further configured to detect the historic health status of the individual rope section provided with and identified by the at least one ID tag ( 101 ) when traveling along said path; and
the computing unit is further configured to process the historic health status of the corresponding rope section to compute and record the new health status of the individual sections of the rope.

19. The rope monitoring system of claim 11 , wherein the rope monitoring system further comprises the rope.

20. The rope monitoring system of claim 11 , wherein the rope comprises a strength member that includes primary strands comprising high performance yarns having a tenacity of at least 1.0 N/Tex as specified in ASTM D885M.

21. A rope monitoring method for a hoisting apparatus with at least one sheave equipped with a rope, wherein the rope is virtually separated in individual rope sections, wherein t

Assignees

• Dsm Ip Assets Bv

Inventors

• Bosman Rigobert

Classifications

• D07B2201/1092

  Parallel strands · CPC title

• D07B2205/2042

  High performance polyesters, e.g. Vectran · CPC title

• D07B2201/104

  twisted · CPC title

• D07B2201/20907

  comprising knitted structures · CPC title

• D07B1/22

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