MG Double Girder Gantry Crane

Double Girder Gantry Crane introduction

Double girder gantry crane is heavy gantry crane with double girders, which is widely used for general purpose. Double girder gantry crane are heavy duty crane, used at indoors and outdoors places where overhead crane runways are not practical. The lifting capacity of the double girder gantry crane is 5 to 500 tons. The working class of the gantry crane is A5 and A6. The main parameters of double girder gantry crane is as follow:

Product Type: MG
Lifting Capacity: 5~500t
Span Length: 12~35m
Working Class: A5, A6
Ambient Temperature: -25~40℃

Components of Double Girder Gantry Crane

The double girder gantry crane is mainly consisted of bridge, trolley, crane travelling mechanism, and electric system.

Double girder gantry crane drawing

Application of Double Girder Gantry Crane

Double girder gantry crane is usually used to open warehouse or along rail for general material handling and lifting work, such as, freight yard or dock, etc.

Advantages of Double Girder Gantry Crane

Advanced technology, delicate design, attractive appearance
Novel structure, wide span, high crane stability and reliability
Large loading capacity and high working efficiency
Flexible operation and easy maintenance
Standardization, generalization and serialization of the spare parts.

Features of Double Girder Gantry Crane

1. General features:

All the operation is conducted in the operating room.
Grab bucket, container spreader, and other special lifting devices can be equipped to do special material handling work.
Customized design based on your specific applications is available.
High efficient, with the work class high up to A5( Medium) and A6( Heavy).
Three control modes for your selection: cab control, remote control, floor control.

2. On main body:

Double welded box beams, with camber line meeting and beyond the national standards.
High steel degree, and high safety.
High quality carbon steel Q235B or Q345B.
Submerged arc automatic welding and nondestructive flaw detection is used.
10.9 high strength bolt is used to connect the end truck.
Separated driving systems is used which make the trinity drive possible, improving the safety and reliability.
Buffer block and orbital cleaning device are equipped to end beams.

3. On trolley part.

The trolley parts mainly includes motor, speed reducer, brake, coupling, wheels, and coiling blocks.
No asbestos brake pad and brake block insert use card outfit, safe and reliable;
Hard toothed surface speed reducer is equipped.
Separate drives are used for the trolley travelling.
High loading ability, stable traveling, and long service life.
Derailment prevention board is used to ensure safety.
Angle round box and buffer device is used.
Modular design is available to meet the various needs of customers.

4. Electric System

Module control speed, micro-speed and double speed are available.
Traveling and lifting smoothly.
Reasonable designed control box layout is easy to repair.
High protection class IP55.
Optional main power source.
All external cable lines are marked with number.
Safety smooth touch line, high conductivity, small pressure drop.
Light dead weight, and convenient to installation.

5. Protection devices

Shields and barriers are set to prevent the hook clashing the top.
Circuit self-test protection device is installed.
Rainproof devices are equipped with lifting mechanism, and electrical control box when the cranes is placed outdoors.
Anti-collision, sound and light alarm devices.
Rail clamps are equipped.
Lifting weight limitation, height limitation, rail clamping devices
Speeding protection, zero pressure protection, the lightning protection

6. Operation devices

Capsule driver room has open eye shot, linkage machine control and easy to operate.
Double block button or lever type lever, smooth operation and accurate.
Remote control, no need of professional driver
Following type or slide-independent, non-following suspension
Protection class IP65
Life of 500000 times; remote control, very easy;
With strong waterproof, fight broke performance

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