5.0 To 60 Ton Screw Lever Luffing Boom Tower Crane For Port Terminal
Harbour Portal Crane With Rigid Rack And Screw Lever Luffing Mechanism Stable Working Condition
Harbour Portal Crane introduction:
Portal cranes refer to the cranes traditionally used at the front of the port terminal. On the portal base running on the ground track, a rotatable jib is set up, with 4 mechanisms for lifting, turning, luffing, and running. Railway trains or other vehicles can pass under the portal. Carry out loading and unloading of vehicles and ships and direct fetching operations by transfer.
Harbour Portal Crane Specification:
| Spreader type | Hook | Grab | |
| Material handling | various goods | bulk cargo | |
| Capacity (under spreader) | 5.0 ～ 60ton | 5.0 ～ 50ton | |
| Lifting height | Above rail | 15 ～ 35m | 15 ～ 35m |
| Under rail | 9 ～ 20m | 9 ～ 18m | |
| Work Grade | A5, A6, A7, A8 | A5, A6, A7, A8 | |
| Outreach | 15 ～ 50m | 15 ～ 50m | |
| Span | 9.0 ～12m | 9.0 ～12m | |
| Standard Speeds | Hoisting with load | 10 ～ 25 m/min | 10 ～ 25 m/min |
| Hoisting without load | 15 ～ 35 m/min | 15 ～ 35 m/min | |
| Luffing | 15 ～ 55m/min | 15 ～ 55m/min | |
| Slewing | 0.8 ～ 2.0 r/min | 0.8 ～ 2.0 r/min | |
| Gantry travel | 20 ～ 30 m/min | 20 ～ 30 m/min | |
Harbour Portal Crane Application:
Railway trains or other vehicles can pass under the door seat, and can be used for loading and unloading of vehicles and ships, as well as direct transfer operations. This kind of crane is also installed on some ships such as container ships with self-loading and unloading machines. This kind of crane is also called Bridge crane because of its bridge shape.
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