Home > Products > Gantry Cranes > Double Girder Gantry Crane
The Double-Girder Gantry Crane consists of two parallel main girders, supporting legs on both sides, and end carriages that travel along ground-level rails. The hoisting trolley traverses along either the upper or lower flange of the main girders, offering lifting capabilities characterized by large spans and heavy loads—performance parameters that far exceed the operational limits of single-girder gantry cranes.
COVINICRANE is China's crane manufacturing enterprise, producing a comprehensive range of double-girder gantry cranes in strict compliance with domestic and international standards, including GB, ISO, FEM, DIN, and CMAA. Every double-girder gantry crane is engineered with a primary focus on high reliability, low energy consumption, and a long service life, thereby ensuring maximum production efficiency and a strong return on investment for our customers.
Every COVINI double girder gantry crane is built from precision-engineered components. Understanding the main parts helps buyers evaluate quality and plan maintenance schedules.
|
Component |
Description |
|
Main Girders (2×) |
Welded box-section or truss steel beams spanning the full width; carry the hoist trolley load |
|
Gantry Legs |
A-frame, U-frame, or straight legs; transmit loads to the end trucks |
|
End Trucks / Bogies |
Travel mechanisms with driven and non-driven wheels running on ground rails |
|
Hoist & Trolley |
Wire rope hoist or chain hoist mounted on a crab trolley; provides lifting and cross-travel |
|
Long-Travel Drive |
Motor, gearbox, and drive wheel assemblies for crane travel along the gantry rails |
|
Rail System |
Ground-mounted crane rails (P24–QU120) with rail clips and anti-creep devices |
|
Electrical System |
Main panel, VFD drives, festoon or busbar cable system, control desk or remote control |
|
Cab / Operator Station |
Enclosed or open cab with joystick controls, visibility, lighting, and safety interlocks |
|
Safety Devices |
Overload limiter, travel limit switches, anti-collision sensors, anemometer, emergency stop |
|
Buffer & End Stop |
Hydraulic or rubber buffers at rail ends; steel end stops prevent overrun |
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