The 300T145m Goliath Gantry Crane is applied for hull constructions in shipyards (such as ship docks, slipways and etc.). The Goliath Gantry Crane has functions of hoisting up and down, swinging, turnover in the air by sections. The turnover by sections and closure operation are the special features. By means of the turnover operation by sections through two trolleys, the adjustment of hoisting up and down will be made first to have the Upper trolley bear the whole sections. The Lower trolley with no load will go through the underside of the Upper trolley and re-tie on the other side of the section. Finally the 180 degrees turnover operation can be completed by the Upper and Lower trolley's hoisting up and down, and the horizontal traversing movement of the Upper and Lówer trolleys.

The main girder of the Crane is of ladder-shaped monobox girder structure. Four rail tracks for the Upper and Lower trolleys traversing movement are arranged at upside and downside of the monobox girder. The maximum Twin-Lift capacity of the two trolleys is not more than 300T. During the turnover operation in the air, the section weight is not more than 300T. The rigid legs are connected with the main girder by the high-strength bolts. An elevator can be provided inside the rigid leg, and the operators can take the elevator to the inner side of the rigid leg from the bottom of rigid leg directly. The top of the main girder can be reached through ladder. Walkways will be provided on the main girder for the operator and maintenance persons access. The flexible legs are of triangle cannulation structures, and the two round pipes are equipped with ladders so that the operator can reach the top platform of the flexible leg or top of the girder directly. The flexible legs are connected with the main girder by the flexible hinges. The Gantry-long-travel mechanisms have totally 64pcs wheels, among which 2x16pcs are at the side of the rigid leg, and 2x16pcs are at the side of the flexible leg. The wheel bogies are connected with the supporting legs (the rigid leg and the flexible leg) through balance girders. The operator's cabin with good visual field is installed at the lower side of the upper trolley, and from the operator’s seat, the movement of the hooks within the operation range can be clearly observed.

A maintenance crane is equipped on the crane, which is located on the top of the main girder and at the side of the rigid leg. The maintenance crane’s lifting capacity, boom length and slewing angle will meet the maintaining requirement for the Upper and Lower trolleys.

The crane is powered through 3-Phase 6.6kV(±10%) 50Hz high-voltage, which is fed by the Power Cable reel. The Upper and Lower trolleys are powered by means of cable pulley moving cable device which is located on the main girder.

Main technical particulars

  Lifting capacity  

  Total lifting capacity 300T

  Upper trolley (I, II hooks) 2 x 150T

  The biggest load difference between two hooks 100t

  Lower trolley (III hook) 150t

  Joint Twin-lift operation of Upper and Lower trolleys 300t

  Turnover operation 300t

  Component force of canting pull for main hooks (I, II, I)  

  Along Gantry-long-travel rail track direction 5% (abt. 3 degrees)

  Along trolley-traversing rail track direction 10% (abt. 6 degrees)

  Capacity of elevator Abt. 400kg

  Main dimensions  

  Rail span 145m

  Wheel Base gauge of leg 30m

  Height of clearance (from bottom of girder to rail) 69.05m

  Hoisting height  

  Above rail surface of main hooks (l, II) / below rail surface 70m/14m

  Above rail surface of main hook (III) / below rail surface 62m/14m

  Rail span of 2 x 150T Upper trolley 8m

  Rail span of 150T / 30T trolley 6.5m

  Hoisting speed  

  Upper trolley (I, II hooks) load 0 - 150t, 0.4 - 65m/min

  no load, 0.4 - 13m/min

  Lower trolley (III hook) load 0 - 150t, 0.4 - 65m/min

  no load, 0.4 - 13m/min

  Traversing speed of Upper and Lower trolleys  

  Wind velocity < 14m/sec 0.6 - 20m/min

  Wind velocity < 8m/sec 0.6 - 30m/min

  Gantry-long-travel speed  

  Wind velocity <14m/sec 0.6 - 20m/min

  Wind velocity <8m/sec 0.6 - 30m/min

  Elevator speed  

  400kg elevator speed 0.5m/sec

  Maintenance crane  

  Lifting capacity 5T

  Hoisting height Abt. 90m

  Hoisting speed full load, 15m/min

  No load, 30m/min

  Trolley speed 20m/min

  Slewing speed 0.5 r.p.m

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  Distance between lifting point and vertical center line of the rigid leg  

  Upper trolley (I, II hooks) 3.5m

  Lower trolley (III main hook) 5.2m

  Distance between lifting point and vertical center line of flexible leg  

  Upper trolley (I, II hooks) 3.5m

  Lower trolley (III main hook) 5.2m

  Minimum distance between Upper and Lower trolleys 11m

  Wheel load  

  Maximum working wheel load of flexible leg Abt. 570kN

  Maximum working wheel load of rigid leg Abt. 620kN

  Maximum non-working wheel load of flexible leg 670kN

  Maximum non-working wheel load of rigid leg 710kN

  (The horizontal wheel load is calculated by 0.1 times of vertical wheel load.)  

  (The wheel load can be adjusted by adding or reducing the number of the wheels as per special requirement)  

  Wheel number  

  Rigid leg 2 x 16 = 32, driving ratio 1/2

  Flexible leg 2 x 16 = 32, driving ratio 1/2

  Diameter of wheel φ800mm

  Type of rail track A120

  Total installed power 2,000 KVA