Port Fixed Four-link Level Luffing Crane

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Last update:
2020-01-04 15:48
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Company Profile
  • Jiangsu Tonghui Lifting Equipment Co., Ltd
  •        By certification [File Integrity]
  • Contactcnthhi(Mr.)  
  • Email
  • telephone
  • Phone
  • AreaJiangsu
  • AddressNo. 82, Luzhong North Road, Yangshan Town, Huishan District, Wuxi City, Jiangsu Province, China
  • Website:http://www.cnthhi.com/
    Product details

    Level luffing 80 ton single jib portal crane port cranes applications are: loading and unloading at port, material handling at dockyard, ship building and repairing yard, metallurgy industry. They mainly indclude lifting mechanism, luffing mechanism, slewing mechanism, travelling mechanism, spreader device(grab, container, hook), electrical equipment and other aiding devices for safety. The applied rigid rack and screw lever luffing mechanism make sure a constant working state.

    Single-link portal crane

    Four-link portal crane



    Overload Limiter

    Main isolating switch

    Limit Switch (Lifting and Traveling)

    Short-circuit protection

    Interlock protection device

    Under-voltage protection


    Zero protection

    Rail tongs, Anchor device

    Motor overload protection

    Rail clear plate

    Emergency stop system

    Protective cover

    Current overload protection system

    Anti-collision device

    Security chain protection

    Anti-overturn Safety Device

    Ground protection


    Working Conditions: loading and unloading operations of medium-sized or big-sized wharfs, outdoor warehouses, stacks or barges in inland ports.

    The crane is installed on the bank. It is applied to the port of loading and unloading cargo between the bank and the ship. The customer can choose from the two: with hook \ with hook and grab.

    Rack-luffing mechanism with boom balance system, pulley block compensation device, applied in the luffing with cargo’s horizontal displacement and payload.

    Adopted the slewing bearing structure, the crane can rotate 360 degrees, and run smoothly.

    According to requirement of user, we design properly the working radius and the lifting height, in order to meet practical requirement.

    This is Electro-Hydraulic Heavy Duty type level luffing type deck crane.

    Gantry crane with level luffing crane Drivers like that should have their licenses taken away from them.

    According to requirement of user, the crane can be adopt frequency conversion control, then every part of the crane can be stable and reliable.

    The crane has the advantages of compact structure, high speed, short luffing-time, efficiency, good stability, low fault rate and easy maintenance.

    * 3t~50t Lifting capacity
    * Installation location: Bank
    * Rate of discharging: General 100~800t/h
    * Common bulk: coal, coke, gravel, sand, ore, cement clinker, steel slag, sulfur, grain, etc.
    * Common cargo: steel, wood, packed cargo, big stone, etc.
    Other Uses
    * Together with wireless electronic scale, the crane can measure the cargo.
    * Together with lifting electromagnet, the crane can unload scrap steel.
    * Together with multiple-arm sling, container spreader etc, the crane can load and unload special goods.
    * Boom Model: Four connecting bar type

    Principle: With complex pulley compensation, cargo can be displaced horizontally, so it can be loaded with full amplitude, 360 degree full rotation, high efficiency, light structure and wide operation range.

    Packing & Delivery Terms
    1. Hoist and electric parts will be packed by plywood crate, for avoiding the demage from goods crash and impact during the delivery.
    2. Girders and other main parts will be packed by plastic woven cloth, for preventing rust from soppy condition during the transportation.
    3. Only the best transport solution will be taken for saving your cost uttermost on finance, security and time.

    An articulated crane has an inner boom pivoted on a supporting base, an outer boom pivotally mounted on the inner boom, and a pair of hydraulic cylinder assemblies, one for moving each of the booms, respectively. The hydraulic cylinder assemblies may be interconnected when desired to coordinate their simultaneous movement, and they are so positioned with respect to the boom pivots that their coordinated movement causes the outer end of the outer boom to travel substantially horizontally.

    Brief Introduction
    Port fixed four link type level luffing crane is an common type portal crane, which is widely used in loading and unloading bulk cargo (like coal, ore) in wharf, steel plant and ship yard as well.

    The four link type level luffing crane has such advantages as reliable operation, high efficiency and so on.

    Four link type level luffing crane is of common type, which is composed by steel structure, lifting mechanism, luffing mechanism, slewing mechanism, crane traveling mechanism, spreader device (as grab / clamshell, container spreader, magnetic, hook and etc.), electric device and other essential safety and accessorial device.

    The luffing mechanism can be rigid gear or rigid bar, where the reliable operation can be assured.

    Simple structure of steel structure is composed by jib, A-shape frame, slewing platform and gantry.

    Standards Followed
    Such standard as GB7495-2008 “ Technical Specification for Level Luffing Crane”, GB6067-85 “Safety Rules for Lifting Mechanism”, GB3811-08 “Design Rules for Crane”, GB/T14406-2003 “ Technical Specification for Gantry Crane”, ISO standard and FEM.

    Technical Specification
    - lifting capacity can be 5t, 10t, 16t, 25t, 40t (hook, grab/clamshell) or detailed requirements.
    - working radius can be 9.5m, 22m or the real site requirements.
    - lifting height (above rail / below rail) will be designed according to real site condition.
    - working speed like lifting speed, luring speed, slewing speed and traveling are up to our customer’s requirement (Generally, PLC control along with inverter to get frequency speed like 2.6~26m/min).
    - base / gauge for the crane is depend on site requirements (the common one for they are 10.5m×10.5m).
    - cable length for power supply of crane is provided according to site condition where level luffing crane will be used.

    Detailed technical specification can be seen the brochure attached.
    Or, you can send us your own requirements that we can design and offer correspondingly.

    Delivery Time
    According to detailed crane specification, no longer than 200 working days generally.

    HS Code

    Bulk cargo vessel is needed to ship the crane, where such large components as gantry, slewing platform are covered by rain-proof clothes, and other small components in wooden box.


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