Mobile Portal Slewing Crane For Construction Industry Application: Storage Yard

Port jib portal slewing mobile harbour crane for mobile portal crane 25t 45m boom
Four-link type portal crane has been extensively applied to loading and unloading at port and materiel handing at dockyard and metallurgy industry, The main structures are composed of steel frame, lifting mechanism, luffing mechanism, slewing mechanism, crane travel mechanism spreader device (grab,container spreader, and hook and electrmangnetdisk), electrical equipment and other necessary equipments for safety. Steel structures include jib and A-frame, slewing platform and gantry frame.

Referenced standards: GB17495-1998 Harbor portal crane technical specifications, GB6067-85 liftequipments safety specification, GB3811-2008 crane design standards, ISO standards, FEM standards and JIS standards.

This kind portal crane is a mobile, fully-rotatable, and four-bar combined crane. Its arms and counter-weight are balanced. There are 2 types of portal frame: cylinder and four outriggers.


Portal crane devides into two types :
One is single-link portal crane, and the other is four-link portal crane.

Four-link portal crane
Four-link portal crane has been extensively applied to loading and unloading at port and materiel handing at dockyard and metallurgy industry, the mainstructures are composedof steel frame, lifting mechanism, luffing mechanism, slewing mechanism, traveling mechanism,spreader device (grab, container spreader, and hook and electric dist), electrical equipment and other accessory equipments for safety.

Single-link portal crane
Single-link portal crane is a kind of hoisting machine especially used inport,harbour, dock, shipyard with small investment for loading and unloading front apron container, sundries and bulk cargo.It mainly includes the following units: crane strong steel frame, lifting mechanism,luffing mechanism, slewing mechanism, traveling mechanism.