125t Underground Hydropower Pump Station Crane Solution
Bridge crane installed inside an underground water-conservancy project for heavy unit lifting.
Underground pump stations and water-conservancy projects require cranes that can install large pump and motor units inside caverns with limited access. The crane must combine high capacity, synchronized lifting and dependable low-speed control while giving maintenance teams clear operating and fault information.
Henan Mine Crane supplied multiple bridge cranes including 125t units for a major national water-conservancy project. The cranes are used for underground pump-station unit installation and feature PLC + VFD communication control, multi-lifting-point synchronization, four-quadrant hoisting and integrated fault diagnostics.
Project Background
Pump-station equipment is often installed below grade in shafts or underground caverns. Long lifting distances, restricted visibility and tight equipment interfaces increase the importance of smooth speed control and accurate positioning.
When a component is supported from several points, the crane must also keep lifting points balanced. A control and monitoring system should show position, operating signals, protective signals and fault status to help operators and maintenance teams manage the lift.
Customer Challenges
- Installing heavy pump and motor units in underground spaces with restricted access.
- Maintaining balance between multiple lifting points.
- Providing strong low-speed torque for controlled placement of large units.
- Managing lowering and regenerative operating conditions efficiently.
- Displaying real-time crane coordinates and protective/fault signals.
- Supporting fault diagnosis and maintenance records for critical project equipment.
Henan Mine Crane Solution
The referenced cranes use PLC + VFD communication control for smoother and more reliable operation. Multi-lifting-point synchronization automatically adjusts balance during heavy unit handling.
The hoisting mechanism uses four-quadrant operation, providing strong starting torque and high low-speed torque for controlled lifting and lowering.
An integrated fault-detection system displays 3D coordinates, operating signals, protection signals and fault signals in real time, with diagnosis, alarm, recording, printing and communication functions.
| Recommended Crane |
125t-Class Double-Girder Overhead Crane |
| Application |
Underground pump-station unit installation |
| Control System |
PLC + VFD communication control |
| Synchronization |
Multi-lifting-point synchronized control with automatic balance adjustment |
| Diagnostics |
3D coordinates + operating/protection/fault signals + alarm and records |
Several bridge cranes positioned along an underground equipment installation cavern.
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Detailed project view of a bridge crane and trolley installed within restricted underground clearance.
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Close view of the hoisting and access arrangement on the underground bridge crane.
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Key Technical Features
PLC + VFD Control
Communication-based control provides smooth movement and coordinated mechanism operation.
Multi-Point Synchronization
Automatic balance adjustment supports heavy components lifted from several points.
Four-Quadrant Hoisting
The hoist can operate effectively across lifting and lowering conditions with strong torque at low speed.
Integrated Fault Diagnostics
Real-time coordinates, status and protection signals improve operating visibility.
Maintenance Records & Communication
Diagnosis, alarm, recording, printing and communication functions support project maintenance management.
Application Scenarios
| Underground Pump Stations |
Installation and maintenance of pump and motor units. |
| Water Diversion Projects |
Heavy equipment handling inside shafts and underground structures. |
| Hydropower Auxiliary Facilities |
Controlled lifting of large mechanical and electrical equipment. |
| Water Conservancy Maintenance |
Long-term overhaul and component replacement after project commissioning. |
Why Choose Henan Mine Crane
- Henan Mine Crane can match crane geometry to underground cavern and pump-station clearances.
- Multi-point synchronization can be engineered from the actual lifting frame and equipment lifting points.
- Four-quadrant motion and low-speed torque can support controlled installation of heavy units.
- Diagnostic and monitoring requirements can be integrated at the initial design stage.
Frequently Asked Questions
Why is four-quadrant hoisting useful in a pump-station crane?
It provides controlled motor operation during both lifting and lowering, including regenerative conditions, and supports strong low-speed torque for precise placement.
Can several lifting points be synchronized automatically?
Yes. The referenced project uses multi-lifting-point synchronized control with automatic balance adjustment.
What information should be supplied for an underground pump-station crane RFQ?
Provide equipment weights, lifting points, cavern cross-section, span, runway level, lifting depth, required speeds, installation sequence, power supply and monitoring requirements.
Request A Water Resources & Power Crane Solution
Send your load data, plant or workshop drawings, lifting sequence, operating environment and control requirements. Henan Mine Crane engineers will review the application and prepare a project-specific crane proposal.
Request A Quote
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