75+75 Ton Double Girder Gantry Crane | 2 Open Winch Trolleys
Short Video Description
This video shows a 75+75 ton double girder gantry crane equipped with two open winch trolleys for heavy outdoor material handling. The crane is suitable for steel yards, fabrication plants, precast plants, power projects, machinery assembly and heavy industrial workshops.
The double girder gantry crane uses two main girders with heavy-duty gantry legs and two independent open winch trolleys. The two 75-ton trolleys can work independently or together for tandem lifting, subject to the project lifting procedure and control system.
For a 75+75 ton outdoor Goliath crane, the main design parameters include capacity, span, lifting height, trolley arrangement, duty class, wheel load, rail gauge, travelling distance, power supply and outdoor wind conditions.
75+75 ton double girder gantry crane with two open winch trolleys
heavy lifting double girder portal gantry crane with open winch trolley
Main Technical Specifications
| Item | Technical Specification |
|---|---|
| Crane type | 75+75 Ton Double Girder Gantry Crane / Outdoor Goliath Crane |
| Rated capacity | 75 ton + 75 ton |
| Hoisting system | 2 Open Winch Trolleys, 75 ton each |
| Trolley operation | Independent operation / synchronized tandem lifting when required |
| Girder design | Double welded box girder, engineered according to span and duty class |
| Span | 15 – 35 m+, customized according to site layout |
| Lifting height | 6 – 20 m+, customized |
| Duty class | ISO A5 – A8 / FEM 2m – 5m, according to working cycle |
| Crane travelling speed | 20 – 40 m/min, VFD available |
| Trolley travelling speed | 20 – 40 m/min, customized |
| Hoisting speed | 1 – 8 m/min, according to load and duty requirements |
| Rail | QU70 / QU80 / customized rail according to calculated wheel load |
| Control | Cabin / Radio Remote / Pendant; synchronized control available |
| Power supply | 380V / 50Hz / 3Ph standard; other voltages available |
| Outdoor protection | Weather-resistant electrical equipment, protective coating and wind protection according to site conditions |
| Safety devices | Overload protection, limit switches, emergency stop, buffers, travel limits and warning alarms |
| Applications | Steel yards, power plants, fabrication yards, precast plants, shipyards, machinery assembly and heavy outdoor lifting |
| Yuantai Crane engineering experience | Yuantai engineers the double girders, gantry legs, open winches, trolleys, wheels, rails and control system as one complete heavy-duty crane system. |
Why Use Two 75 Ton Open Winch Trolleys?
A 75+75 ton gantry crane with two open winch trolleys is designed when the project requires two independent 75-ton lifting systems or a combined lifting capacity for oversized loads. The two trolleys can be operated separately for different loads or synchronized for approved tandem lifting operations.
For tandem lifting, the load distribution, trolley synchronization, girder strength, wheel loads and lifting procedure must be checked during engineering. Yuantai Crane can configure the control system according to the required independent or synchronized operation.
75+75 Ton Gantry Crane FAQ
Common questions about 75+75 ton double girder gantry cranes, open winch trolleys, tandem lifting, project requirements and Yuantai Crane's heavy-duty crane engineering experience.
1. What is a 75+75 ton gantry crane?
A 75+75 ton double girder gantry crane is equipped with two 75-ton open winch trolleys on the same crane. Each trolley can normally lift up to 75 tons. The two trolleys can also be designed for synchronized tandem lifting of heavy or oversized loads when required.
2. Why use open winch trolleys for a 75+75 ton gantry crane?
Open winch trolleys are suitable for high-capacity, heavy-duty cranes. They provide a flexible mechanical arrangement, high lifting capacity and reliable performance for demanding industrial applications.
3. Can two 75 ton trolleys lift one load together?
Yes. When synchronized tandem lifting is required, the crane can be engineered with coordinated controls and suitable mechanical components. Load distribution, lifting speed, girder strength, wheel loads and the lifting procedure must be considered in the design.
4. What information is needed for a 75+75 ton gantry crane quotation?
The main information includes lifting capacity, span, lifting height, trolley arrangement, duty class, rail gauge, travelling distance, working frequency, power supply and site layout. For tandem lifting, provide the load dimensions, center of gravity and proposed lifting method.
5. What experience does Yuantai Crane have with heavy gantry cranes?
Yuantai Crane designs and manufactures double girder gantry cranes, Goliath cranes, open winch cranes and heavy-duty lifting systems. For a 75+75 ton project, the engineering can cover the main girders, gantry legs, open winch trolleys, wheels, rails, electrical controls and foundation loads according to the project requirements.
Need a 75+75 Ton Double Girder Gantry Crane?
Send us your 75+75 ton capacity, span, lifting height, trolley configuration, duty class, rail gauge, travelling distance and site layout. Yuantai Crane can engineer the double girder gantry crane and two open winch trolleys for your heavy outdoor lifting application.
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Article by Bella ，who has been in the hoist and crane field since 2016. Bella provides overhead crane & gantry crane consultation services for clients who need a customized overhead travelling crane solution.Contact her to get free consultation.
Yuantai Cranes
Yuantai Cranes - Global Material Handling Crane Solution Provider & Manufacturer with CE, ISO, SGS, CNEX and other Third Party Certifications.
- Main Specifications - Capacity: 0.5–550 tons | Span: up to 40m | Speed: 0.8–12 m/min | Duty: A3–A7 | Power: 380–690V, 50/60Hz | Control: pendant/remote/cabin
- Full engineering: FEA/PLC/VFD + in-house build + global delivery + on-site support, for workshops, factories, EPC contractors, industrial projects, etc.
- Support: design, manufacturing, testing, service – end-to-end, customized lifting solutions worldwide.
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- Crane type:_____ . (e.g., overhead crane, gantry crane, jib crane)
- Max weight to lift:_____ tons. (e.g., 2t, 5t, 10t, 20t, 50t)
- Lifting height:_____ m. (How high does the hook need to reach?
- Workshop width (span):_____ m . (Distance between the two crane rails)
- Travel distance:_____ m . (How long does the crane need to move along the runway?)
- Control type:_____. (Pendant / remote / cabin Control)
- Power supply:_____. (Local voltage & frequency – e.g., 380V, 50Hz, 3-phase)
- What will it be used for?_____ (e.g., steel fabrication, concrete products, mold handling, general manufacturing, etc.)
- Any special requirements?_____ (e.g., extreme temperature, dusty or explosive environment, special paint color, etc.)
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