Product Introduction
MG Double Girder Gantry Crane (Truss Type) is a rail-mounted gantry crane with a truss-structured main girder. The lifting trolley runs on the rails above the twin main girders. It can be operated via wireless remote control or from the driver's cab.
The truss main girder is fabricated from welded steel pipe or angle steel. Compared with box-type double-girder gantry cranes, it features lighter deadweight, lower wheel load, and reduced wind resistance, making it suitable for large spans, heavy capacities, and high-wind-load environments. It is widely used in precast concrete beam yards, ship block assembly, steel plate handling, tunnel segment storage, and heavy-duty processing workshops.
Product Parameter
|
Parameters |
Standard Range / Options |
|
Capacity |
10–160 tons |
|
Span |
10–40 meters |
|
Lifting height |
6–18 meters |
|
Duty class |
A3–A5 |
|
Hoisting speed |
0.8–10 m/min |
|
Trolley travel speed |
10–20 m/min |
|
Crane travel speed |
10–20 m/min |
|
Control method |
Pendant control, wireless remote control, driver's cab |
|
Power supply |
3-phase 380V/50Hz |
|
Ambient temperature |
–25°C to +40°C |
|
Electrical protection |
IP54 / IP55 |
Note: Lifting capacity, span, lifting height, lifting speed, traveling speed, power supply, and operation mode can all be customized.
Product Feature And Application
Features of Double-Girder Gantry Crane (Truss Type)
Robust and stable structure, suitable for large-span outdoor lifting
Light deadweight and low wheel pressure, resulting in low purchase cost and foundation construction cost
Excellent wind resistance, suitable for coastal and open-air sites
Modular design, easy installation and maintenance
Complete safety devices such as rail clamps, anchoring devices, and wind alarm systems
Applications of Double-Girder Gantry Crane (Truss Type)
Precast concrete beam yards and concrete batching plants
Shipyards and ship repair yards
Steel structure fabrication workshops and steel handling yards
Storage yards for railway, metro, and tunnel segments
Ports, intermodal freight yards, and bulk material handling
Wind turbine tower and power equipment manufacturing plants
Heavy machinery assembly workshops and finished product storage warehouses
Product Details
Main girders
Two truss-type main girders that support trolley travel. They are lightweight, have high rigidity, and allow large spans.
Legs
Connect the main girders to the lower beams. Typically one side is a rigid leg and the other is a flexible leg to ensure overall stability.
Hoisting mechanism
Mounted on the trolley, consisting of an electric motor, reducer, drum, brake, wire rope, and lifting attachment. It is used to lift the load.
Gantry travel mechanism
Mounted on the lower beams, consisting of electric motors, reducers, wheels, etc. It drives the whole crane along ground rails.
Product Selection Guide
To select a suitable truss-type double-girder gantry crane, evaluate the following key parameters:
Step 1 – Determine Lifting Capacity Requirements
Calculate the maximum weight of a single load (including lifting attachments)
Clarify whether an auxiliary hook is required for secondary lifting operations
Reserve tonnage allowance for future production capacity expansion
Standard tonnages: 20t, 32t, 50t, 80t, 100t, 160t.
Step 2 – Confirm Span and Lifting Height
Span: Measure the centre-to-centre distance between the two rails, ensuring adequate safety clearance on both sides from obstacles. Standard span ranges from 20 m to 60 m.
Lifting Height: The distance from the top surface of the rails to the maximum/minimum required hook position. This must account for hook safety clearance and the dimensions of lifting attachments.
Cantilever Extension: If additional lateral working coverage outside the legs is needed, specify the required cantilever extension length.
Step 3 – Specify Working Class and Travelling Speed
Match the ISO working class according to actual operating frequency:
A3: Light-duty, infrequent operation (warehouses and storage yards)
A4: Medium-duty, regular operation (general manufacturing)
A5: Heavy-duty, continuous daily operation (precast beam yards, construction sites)
Select speed configurations based on operational throughput and positioning accuracy requirements. Variable-frequency drive is recommended for applications requiring smooth and precise positioning.
Step 4 – Site Conditions and Customisation Options
Evaluate ambient temperature range, maximum wind speed and corrosive operating conditions
Specify the control mode: pendant push-button, operator cabin, remote control or combined mode
Optional features: wind-proof anchoring system, anti-collision system, CCTV surveillance, storm protection devices
Confirm local power-supply voltage and frequency
Our engineering team provides free selection consultation and layout design services based on your site drawings and operational requirements.
Certification
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FAQ
Q: What is the lifting capacity of the truss type double girder gantry crane?
A: Standard designs cover 5–160 tons. Larger capacities can be customised based on the application, span, and site conditions.
Q: Can the span and lifting height be customised?
A: Yes. The span can exceed 40 metres, and the lifting height can be increased according to the requirements of precast beam yards, shipyards, or storage facilities. Yufei Crane will provide customised general arrangement drawings for your confirmation.
Q: What power supply and control options are available?
A: The standard power supply is 380V/50Hz. Other voltages such as 400V/50Hz and 440V/60Hz can also be configured. Control modes include pendant push–button, wireless remote control, operator cabin, and PLC control with variable frequency drive.
Q: What safety devices are standard on the Double Girder Truss Gantry Crane?
A: Standard safety devices include overload limiter, upper and lower hook limit switches, travel limit switches, rail clamps, wind speed alarm, wind proof anchoring, buffers, emergency stop, anti–collision system, and safety brakes.
Q: Do you provide installation and commissioning services?
A: Yes. Yufei Crane can provide installation supervision or a full installation team, as well as commissioning, load testing, and operator training.
Q: What is the delivery time for the MG Type Double Girder Gantry Crane(Truss Type)?
A: Generally 30–60 days after drawing confirmation and receipt of the advance payment, depending on the tonnage, span, and customisation scope.
Q: Do you supply spare parts?
A: Yes. We supply genuine original spare parts and provide a recommended list of critical spare parts to minimise downtime.
Q: How can I get a quotation?
A: Please send the lifting capacity, span, lifting height, duty classification, track gauge, power supply, and site location to Yufei Crane. We will provide technical data sheets, general arrangement drawings, and a detailed quotation.
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