1 of 59 arun k. bhimani, s.e. president liftech consultants inc. twin 40 dockside cranes and...

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Arun K. Bhimani, S.E.PresidentLiftech Consultants Inc.www.liftech.net

Twin 40 Dockside Cranes and Associated Terminal Operations

AAPA Facilities Engineering Seminar - 2007

Robert Johansen, P.E.Planning DirectorDMJM HARRIS – AECOM

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Presentation Outline

Twin 40 Dockside Cranes – Arun BhimaniTerminal Operations – Bob JohansenSummaryComments – Q & A

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Outline - Twin 40 Dockside Cranes

General InformationHead Blocks and CouplingHead Block StowageOperational IssuesDesign Considerations

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General Information

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Typical Dimensions

Rail Gauge 100 ft typical, some 115 ftOutreach 200 – 225 ftBackreach 50 – 75 ftLift Height 136 ftOverall Width 88.5 ft

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Lift Capacity – Under Spreader

Up t

o 4

0 t

80 t Total

Up t

o 6

0 t

30 t

30 t

30 t

30 t

30 t

30 t

Up t

o 4

0 t

120 t Total80 t Total

Metric Tons

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SpeedsMain Hoist

60 t Single Lift 245 - 295 fpm40 t Single Lift 310 fpm80 t Tandem Lift 245 - 310 fpm

Empty 500 fpm

Trolley 800 fpm

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Crane Weights – Metric Tons

Single Hoist DHT40 Increase

61 t 80 t

Dead Load 1455 t 1860 tTrolley 27 t 50 tHB + Spreader 18 t 40 tTotal 1500 t 1950 t 30%

Rope Towed Trolley Crane in Typhoon Area

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Operating Wheel Loads – Seaside

- Rope Towed Trolley Crane in Hurricane Area - 8 Wheels per Corner

Type Single Hoist DHT40Increase

80 t

Service 42 k/ft 56 k/ft 33.3%Factored 60 k/ft 81 k/ft 37.5%(ASCE)

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Single Hoist

Bromma

Dual Hoist

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Single Hoist Twin 40AdvantagesUse with single hoist

cranesMultiple spreader suppliers

Disadvantages Remove twin 20 spreaderSpread sheaves on trolleyAdd twin 40 spreadersStore on ground when

throughSource: Bromma Presentation

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Dual Hoist Twin 40 (DHT40) - Shanghai

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Number of DHT40 Cranes – ZPMC

PRC Other* TotalDelivered 37 10 47On Order 31 49 80

Capacity 80 t 90%100 – 120 t 10%

* Primarily Dubai, Singapore

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DHT40 Machinery

Two Main HoistsOne Extended TrolleyComplex Dual Head BlocksSpecial Operator Controls

WS Hoist LS Hoist

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Extended TrolleyWatersideSheaves

LandsideSheaves

Two HB PowerCable Reels

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DHT 40 Head Blocks

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Operator’s Controls

Left Console 8 Foot Switches Right Console

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DHT Head Blocks

Waterside

Landside

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Waterside Headblock

Separating Cylinder

Pitch Cylinder

Yaw Cylinder

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Landside Headblock Ball clamp extended Ball clamp retracted

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Headblock Relative Motion Translation

Vertical offset

Separation and Relative Skew Control

500 mm

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DHT40 Challenges

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DHT40 Challenges

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DHT40 Challenges

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DHT40 Challenges

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DHT40 Challenges

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DHT40 Challenges

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Head Block Stowage

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DHT40 – Headblock StowageFor single hoist operation, unused headblock and spreader “two blocked” to trolley

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DHT40 Challenges

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DHT40 Challenges

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DHT40 Challenges

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DHT40 Challenges

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DHT Operations

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Ship Side Landside

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Ideal Ship Stow

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Ideal Land Side OperationsBomb carts in positionExtra bomb carts in line behind Evenly stacked deck containersSame height containers

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Not an Ideal World

Efficient headblock uncoupling and re-coupling is required

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Bomb cart landing

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Simultaneous Entry Staggered Entry

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Head Block CouplingSpreaders close togetherand level while handling

two containers of the samesize and working within

cell guides

Spreaders repositionedwhile handling

two containers of differingsize

Spreaders spread apartand not level while handlingtwo containers of differing

size and spotting containersonto yard chassis

Hydraulic cylinderused to accommodate container geometry and

space the spreaders

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Productivity PotentialDHT40 is expected to be at least 50% more productive than a single lift crane.

Crane Type FEU PotentialSingle-Lift 25 – 30Dual-Hoist 35 – 45FEU – Forty-foot Equivalent Container Moves per Hour; Single Cycle

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Productivity Challenge

1. Efficient Head Block Coupling2. Operator’s controls3. Operator training4. Terminal infrastructure

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Design Considerations

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Fatigue Design Criteria – Single Hoist

Lift Capacity 61 tFatigue Load 38 t

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Fatigue Design Criteria – DHT40

Lift Capacity 60 t – Landside40 t – Seaside

Fatigue Load38 t – 4 x 106 Cycles; Landside

or50 t – 2 x106 Cycles; Total

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Fatigue Spectrum

Waterside

Single Cycles

Double Cycles

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Snag Load

Head block and empty spreader traveling at high speed striking the cell guide

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Summary – DHT CranesPredominantly 80 t Capacity

Landside 60 t, Seaside 40 tPremium Over Single Hoist

Weight 30%Wheel Loads 30% – 40%

Potential Productivity Increase 50%

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What is Next?Triple 40

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Triple 40100 t Total

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Triple 40

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Terminal Operations

Circa 1960

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Summary

Twin 40 Cranes are HerePrimarily Used for Trans-shipment HubsTwin 40 Content Average 20%

Increase over Single Hoist CraneWeight – 30%Wheel Loads – 35%

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SummaryDHT40 Crane Design still Evolving

Productivity Potential 50% Operator Training Infrastructure Planning

Is the DHT40 Crane For You?

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Your Comments

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Acknowledgements

Engineering and Operations PersonnelHutchison Port HoldingsYantian Int’l Container TerminalsModern Terminals LimitedDachan Bay Container TerminalsZPMCMcKay International Engineers

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Thank You

This presentation is available for download on our website:

www.liftech.net

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Quality Assurance Review:

Author: Arun Bhimani

Editor: Teresa Ferguson

Principal: Arun Bhimani

Liftech Consultants Inc. file data:

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Copyright 2007 by Liftech Consultants Inc. All rights reserved.

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