Truss-Type Gantry Crane and Components

  A double truss girder gantry crane is an overhead crane built on top of a structure that is supported by freestanding legs, eliminating the need for an overhead runway system. Gantry cranes are built on movable frameworks with wheels that enable the structure to be moved along a track or rail system.      Truss type Gantry Crane is extensively used in the fabrication Industry for handling loads from 10 to 300 tons. With the truss design it is relatively economical to be use whether during relocation, assembly or services. Also with the small area of contact it is suitable to be use in area with strong wind.      We have supplied Truss type Gantry Crane for bridge construction, precast bridge casting yard and other special usage.  ZHONGJIAN Double Box Girder gantry crane are designed with the highest engineering standards for safety and high performance by advanced technology.  ZHONGJIAN manufactures and supplies custom double girder gantry crane with the capacity up to 300 tons and span up to 50 meters for your demands.----------------------------------------------------------Design and Manufacturing Feature-----------------------------------------------------------------Design Code:       ZHONGJIAN's Double Truss Girder Gantry Crane follows the design code of FEM, CMAA, ISO EN, BS, GB standard.Open Winch:      Heavy Duty Design, compact structure, smooth operation, accurate positioning, high Safety reliability, and Maintenance-friendly.Girder:      Compact Design and low weight, use Q355B steel material(ISO EN S355, DIN ST52, ASTM A 572 Grade 50), welding specification follows ISO 15614, AWS D14.1, deflection can from 1/700 ~ 1/1000, MT or PT is requested for Fillet welding and UT is requested for joint welding.End Carriage/Bogie:      Direct Driving design with high transmission efficiency. Using hollow tube for the steel housing. Wheel material is alloy steel with proper heat treatment which is more stable and durable. Bogie design with hinge to balance the wheel load for both side.    Gear Motor:      Worldwide top brand gear motor to make sure the quality, IP55, F insulation class, overheat protection, manual release bar, and equipped with electro-magnetic brake.Control Panel:      Follow IEC standard, IP55 powder coating high quality enclosure, socket plug-in for easy connection, DIN standard terminal, international brand for the inverter, MCB, Contact and electrical devices on the panelFestoon System:      Double line Galvanized C track system with flexible flat cable, one line for hoist power and signal transmission, one line for the pendent control trolley movement. No-welding claw is design for the brackets of the festoon system fixing.Safety Protection Functions:       ZHONGJIAN Double Girder Gantry Crane include a lot of protection functions, like Overheat protection for the lifting, load cell type overload limit switch, up&down position limit switch, cross limit switch for the cross travel and long travel. Phase sequence relay, and other optional functions, like crane monitoring system, LED load displayer.Controls:      ZHONGJIAN Double Girder Gantry Crane can offer both options of remote control and pendent control.Anti-corrosive Treatment:     Shoot Blasting follow ISO8501-1 SA2.5 class, roughness follow ISO 8503 G class, clearness follow 8502-3 Level II. Use top brand 's Rich zinc epoxy painting for the prime, middle layer coating. Use polyurethane topcoat for the finished layer coating. All  ZHONGJIAN painters are trained or inspected by NACE or FROSIO level II Inspector-------------------------------------------------------------------------- Application --------------------------------------------------------------------------------Various Bridge Project (HSR, LRT, MRT, etc. projects) (Handling of Rebar Cages, lifting and storing of Precast Girders at Casting Yard, lifting and erection of Precast Bridge Segments, etc.)Subway Tunnel (Remove residue soil at Taphole, usually with quite big lifting height /depth)Shipyard (Ship hull block transferring, joint and turnover on the dock)Port(Cargo/Goods handling to barge/ship)Manufacturing factory/workshop/storage yards (Lifting & handling of heavy parts/goods) Product ParametersTechnical Data of Double Girder Gantry Crane with WinchCapacity10t20t25T32t40t50t63t80t100tDuty Group(ISO/FEM)M5/2m (M6/3m, M7/4m is optional)Spanm10~50Height of Liftingm6~100Left Cantilevelm