300t Double-Girder Crane for Zhangjinggao Bridge Construction
Featured image of the 300t-class new-type double-girder crane used for major bridge construction.
Bridge steel fabrication needs cranes that combine high capacity with precise positioning because large structural sections must be moved between welding, machining, trial-assembly and inspection positions. Buyers also need equipment that is maintainable throughout a long infrastructure project.
Henan Mine Crane supplied a 300t new-type double-girder crane for the Zhangjinggao Yangtze River Bridge project. The source highlights modular design, lightweight structure, hard-tooth-surface reducers, integrated electrical design, full variable-frequency control and reserved upgrade interfaces.
Project Background
Heavy bridge modules may need smooth low-speed positioning at assembly fixtures while empty travel and general transfer require higher efficiency. A full-VFD motion system allows operating speeds to be controlled around the actual production task.
The source emphasizes modularization and generalized components to improve component utilization. The crane is also designed with interfaces reserved for future equipment upgrades.
Customer Challenges
- Moving 300t-class bridge structures accurately between fabrication stations.
- Reducing shock during starting and stopping of large suspended loads.
- Maintaining positioning accuracy during trial assembly.
- Reducing crane dead weight and unnecessary building or runway demand.
- Simplifying maintenance through modular and generalized components.
- Allowing future control and intelligence upgrades without replacing the whole crane.
Henan Mine Crane Solution
The referenced 300t crane uses a modular double-girder design with relatively lightweight structural concepts. Hard-tooth-surface reducers and integrated electrical design support the heavy-duty mechanism package.
Full variable-frequency control provides smooth travel and precise positioning. The source also describes maintenance-reduction and energy-saving characteristics.
Reserved upgrade interfaces allow future control functions to be added more easily as project or production requirements change.
| Recommended Crane |
300t New-Type Double-Girder Bridge Construction Crane |
| Application |
Bridge steel structure fabrication and assembly |
| Structure |
Modular + lightweight double-girder design |
| Control |
Full variable-frequency control |
| Upgrade Strategy |
Reserved multi-interface design for future equipment upgrades |
Project view of the heavy bridge-construction crane positioned at the riverside fabrication area.
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Detailed side view showing the heavy double-girder crane and its lifting mechanisms.
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Front project view of the 300t crane serving bridge steel fabrication and assembly.
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Key Technical Features
300t Heavy Bridge Handling
The referenced crane supports high-capacity bridge-construction lifting.
Modular Design
Generalized modular components improve reuse and simplify future maintenance.
Lightweight Structure
Reduced structural self-weight can lower unnecessary runway and building loads.
Full VFD Control
Variable-frequency travel and hoisting provide smooth operation and precise positioning.
Hard-Tooth-Surface Reducers
The source identifies hard-tooth reducers as part of the drive configuration.
Upgrade Interfaces
Reserved interfaces support future equipment or control upgrades.
Application Scenarios
| Bridge Steel Fabrication |
Movement of large structural sections between production stations. |
| Trial Assembly Bays |
Precise positioning of bridge modules for fit-up and inspection. |
| Heavy Steel Manufacturing |
High-capacity transfer of fabricated components. |
| Infrastructure Production Bases |
Long-term crane service supporting major project fabrication. |
Why Choose Henan Mine Crane
- Henan Mine Crane can match heavy-lift capacity with the actual bridge-fabrication workflow.
- Modular and generalized design can simplify maintenance and spare-parts planning.
- Full VFD control supports both productivity and accurate low-speed placement.
- Future upgrade interfaces can be included during initial crane design.
Frequently Asked Questions
Why use full VFD control on a bridge fabrication crane?
It provides smoother acceleration and deceleration and better low-speed control when large structural sections must be positioned accurately.
What does modular crane design help with?
Modularization can improve component standardization, maintenance access and future replacement or upgrade planning.
What information should be included in the RFQ?
Provide maximum module weight, dimensions, lifting points, span, lifting height, runway length, production cycle, required positioning tolerance and control/upgrade requirements.
Request A Construction Engineering Crane Solution
Send your maximum load, structure or equipment drawings, project layout, span, lifting height, runway information, operating cycle and construction schedule. Henan Mine Crane engineers will review the application and prepare a project-specific crane proposal.
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