Heavy Duty Double Girder Gantry Crane For Construction

1. Products Introduction
Gantry cranes are all types of cranes which lift objects by an open winch which is fitted in a trolley and can move horizontally on a rail or pair of rails fitted under a beam. Gantry cranes are an excellent alternative to permanent indoor overhead cranes, which minimal investment in any new building by eliminating the need for increased foundational and structural considerations. In addition, they can be disassembled and moved to a new location easily.
We designed MG Gantry cranes with different capacities and spans that will meet your requirements.
Our designed Gantry Crane is with heavy loads up to 700t and spans can be over 50 meters. For fabrication and freight-transfer applications, it can move loads rapidly and smoothly.
Double Girder Gantry cranes are widely used for moving objects within shipyards, ports, rail yards, factories, and warehouses.



2. Technical Specification
1- Lifting Mechanism
-open winch trolley combined with motor, gearbox, hydraulic brake, drum, hook, sheaves, coupling, brake drum etc.
-Rigid box type trolley frame
- Wound Rotor 3-phase asynchronous motor
- Harden Teeth Gearbox
- hydraulic Drum Brake
-Plate-rolled Drum kits
2-Driven Bogie and Bottom Beam
-Forged Flanged wheel
-Rigid welded box type beam
-compact layout
3-Griders and Legs
-2 main girder and 4 legs are welded box type
-Material: carbon steel with high quality of Q235B or Q345B
-The main girder is connected by strength bolt.
-Weld joint tested by X ray or ultrasonic examination;
- Modula design
- Designed Deflection≤1/800 of span
4-Control
-Cabin control
-Independent pendent control as option
-Wireless control as option
5-Electric Part
-Conductor power supply
-All hoist and crane movements are independent and can be run simultaneously.
-Protection degree IP55
-The components are positioned in a maintenance friendly way, and the whole layout provides with good protection
-Festoon cables are suspended on cable saddles, fixed to cable trolleys, running in a galvanized C-track.
6-Painting
-corrosion protection through rust removal by mechanical shot blasting SA 2.5
-First layer of coating epoxy 30 microns
-Second layer of coating epoxy 30 microns
-Third Layer of coating of polyurethane 40 microns
-Average thickness: about 100 microns
-Color: yellow or Orange as per requirements
7-Safe Protection
-Emergency-off switch
-Overload protect
-Earth protection
-Zero Position Protection
-Cross travel and long travel protection
-Lifting travel protection
-Overheating protection of motor
-Equipped with rainproof devices
- Alarm Bell and Lamp
-Anemometer and aviation obstruction light as option

3. Factory View

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