Multi-layer drum winches within subsea hoisting cranes Prof. - - PowerPoint PPT Presentation

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Multi-layer drum winches within subsea hoisting cranes Prof. - - PowerPoint PPT Presentation

Feb 07, 2023 173 likes •378 views

Multi-layer drum winches within subsea hoisting cranes Prof. Dr.-Ing. A. Lohrengel, M. Schulze M.Sc., Dipl.-Ing. M. Wchter Clausthal University of Technology, Institute of Mechanical Engineering IMCA, Lifting & Rigging Seminar, 27 th

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1 Martin Schulze M.Sc.

Multi-layer drum winches within subsea hoisting cranes

  • Prof. Dr.-Ing. A. Lohrengel, M. Schulze M.Sc., Dipl.-Ing. M. Wächter

Clausthal University of Technology, Institute of Mechanical Engineering IMCA, Lifting & Rigging Seminar, 27th September 2018

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2 Martin Schulze M.Sc.

Fibre rope in multi-layer winding

A good idea? No Yes

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3 Martin Schulze M.Sc.

  • Introduction
  • Important rope properties for multi-layer winding
  • Rope elasticity's
  • Rope deformation and winding pack
  • Selection of rope diameter
  • Conclusion

Contents

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4 Martin Schulze M.Sc.

  • Trends in the use of running ropes
  • Demand for large rope length
  • Lightweight design
  • Implications form these trends
  • Use of high performance fibre

(HPF) ropes in running rope applications

  • Lightweight drum design
  • Design a safe system of fibre

rope and drum

Introduction

1

http://www.newmaker.com/news-564-Hampidjan's-Dynex%C2%AE-Warps-made-with-Dyneema%C2%AE-have-a-wide-range-of-benefi-ts- to-offer-the-commercial-fi-sherman.html 29.03.2017

1 1

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5 Martin Schulze M.Sc.

  • Option 1: Design a system of HPF rope and drum
  • HPF rope selection suitable to the application
  • Drum adjustment referring to HPF rope
  • Optimised system – more expensive option
  • Option 2: Replacement of wire ropes with HPF ropes

(on wire rope drum)

  • HPF rope selection suitable to the application
  • HPF rope selection suitable to the drum
  • Cheaper option – more difficult rope selection

Design strategies for fibre rope application

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6 Martin Schulze M.Sc.

Rope properties and their influence on the drum

Wire rope Fibre rope Influence on the drum Lateral stiffness Friction Deformation

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7 Martin Schulze M.Sc.

Load reducing effect in multilayer winding

Δ𝐺

𝑡𝑡 = 𝑞𝑠 ⋅

𝜌 4 ⋅ 𝑒𝑛𝑛𝑛 ⋅ 𝑒𝑛𝑛𝑛 ⋅ 𝑔

𝑢𝑢𝑛

2 ⋅ 𝑠

𝑛

⋅ 𝐹𝑇𝑇 𝐹𝑇𝑇 ⋅ 𝐵𝑢𝑢𝑛

  • Rope deformation
  • Winding radius
  • Rope elasticity

Important rope properties

longitudinal elasticity lateral elasticity

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8 Martin Schulze M.Sc.

Ropes

2

Schwarzer, T.: Beitrag zur Gestaltung und Dimensionierung von Windentrommeln bei mehrlagiger Bewicklung mit Kunststoff- und Hybridseilen, Dissertation, TU Clausthal

No. Name d in mm Material Construction Core Cover-braid 1 DynIce Warp 22 Dyneema SK 75 12 strand braided, heat stretched Poly- ethy- lene Dyneema 2 DynIce Dux 23 Dyneema 12 strand braided, heat stretched 3 Eurolift2 23 wire

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9 Martin Schulze M.Sc.

Lateral elasticity 𝑭𝑻𝑻 Longitudinal elasticity 𝑭𝑻𝑻

Rope elasticity's

Ratio longitudinal to lateral elasticity

Δ𝐺

𝑡𝑡 = 𝑞𝑠 ⋅

𝜌 4 ⋅ 𝑒𝑛𝑛𝑛 ⋅ 𝑒𝑛𝑛𝑛 ⋅ 𝑔

𝑢𝑢𝑛

2 ⋅ 𝑠

𝑛

⋅ 𝐹𝑇𝑇 𝐹𝑇𝑇 ⋅ 𝐵𝑢𝑢𝑛

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10 Martin Schulze M.Sc.

Multi-layer drum

  • Drum
  • Grooving system (Lebus-grooving)

Coil CS 1 Cross section 2 PS 2 Parallel section 1 Flanges Drum barrel

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11 Martin Schulze M.Sc.

  • Scanner configuration
  • Compiled rope cross section
  • Measurement
  • Find dmin and dmax
  • Related circularity

𝑆𝑠𝑢𝑠 = 𝑒𝑛𝑛𝑛 𝑒𝑛𝑛𝑛

Rope deformation

Scanner 1 Scanner 2 Scanner 3

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12 Martin Schulze M.Sc.

  • Cross section rope 1
  • Cross section rope 2

Rope deformation

  • 50

axial position x in mm

  • 30
  • 40
  • 20 -10

10

  • 40

axial position x in mm

  • 20
  • 30
  • 10

10 20 30 230 220 240 260 250 230 220 240 260 250 radial position y in mm radial position y in mm

Core and cover-braid: Rrel = 0.93 No core and cover-braid: Rrel = 0.81

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13 Martin Schulze M.Sc.

  • Scanner configuration
  • Compiled winding

pack

Winding pack

Scanner 1

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14 Martin Schulze M.Sc.

  • Winding pack rope 1
  • Winding pack rope 2

Winding pack

  • 80

axial position x in mm

  • 40
  • 60
  • 20 0 20 40 60 80

260 240 280 320 300 340 radial position y in mm

  • 80

axial position x in mm

  • 40
  • 60
  • 20 0 20 40 60 80

260 240 280 320 300 340 radial position y in mm

Core and cover-braid: Rrel = 0.93 No core and cover-braid: Rrel = 0.81

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15 Martin Schulze M.Sc.

  • Winding pack rope 1
  • Winding pack rope 2

Winding pack

  • 80

axial position x in mm

  • 40
  • 60
  • 20 0 20 40 60 80

260 240 280 320 300 340 radial position y in mm

  • 80

axial position x in mm

  • 40
  • 60
  • 20 0 20 40 60 80

260 240 280 320 300 340 radial position y in mm

Core and cover-braid: Rrel = 0.93 No core and cover-braid: Rrel = 0.81

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16 Martin Schulze M.Sc.

  • Minimum breaking load
  • Rope fits best into groove (𝑓 = 1.05 ⋅ 𝑒𝑛𝑜𝑛)

Selection of rope diameter

dnom = 23.00 mm Rrel = 1 Rrel = 0.9 Rrel = 0.8 Rrel = 0.7 dnom = 23.00 mm dnom = 23.00 mm dnom = 23.00 mm dnom = 23.00 mm dnom = 22.69 mm dnom = 21.39 mm dnom = 20.01 mm dnom = const. A = const. dmax = const. A = decr.

𝑆𝑠𝑢𝑠 = 𝑒𝑛𝑛𝑛 𝑒𝑛𝑛𝑛

Rrel = 0.93 Rrel = 0.81

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17 Martin Schulze M.Sc.

  • Simplified test to determine the deformation:

𝑆𝑠𝑢𝑠 =

𝑒𝑛𝑛𝑛 𝑒𝑛𝑛𝑛

  • Relevant longitudinal force
  • Lateral force as on rope drum
  • Measure rope deformation

Selection of rope diameter

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18 Martin Schulze M.Sc.

Adjust the drum surface to the deformed HPF rope

Option 1: Design a system of HPF rope and drum

Shape of grooving Filling bars at the flanges Leave some space in the cross section area

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19 Martin Schulze M.Sc.

Option? Option 2:

Comparison of design options

  • Rope 1
  • Rope 2

Option 1:

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20 Martin Schulze M.Sc.

  • Ratio of elasticity’s of HPF rope can be

similar to wire rope

  • Deformation of rope cross section must be

taken into account for options 1 and 2

  • perform a simplified test or a spooling test
  • The goal should be option 1: Design a

system of HPF rope and drum

Conclusion

Wire rope like HPF rope Adjusted drum surface