The Shield Tunnel Gantry Crane is a heavy-duty equipment specifically designed for tunnel construction, used for lifting and transporting large components such as shield machine parts and pipe segments. Its structure mainly consists of the gantry frame, lifting mechanism, travel mechanism, electrical system, and control system. The gantry frame, typically made of high-strength steel, adopts a portal structure that spans across the tunnel construction area to ensure sufficient stability and load-bearing capacity.
The lifting mechanism includes the main lifting system and an auxiliary lifting system. The main lifting system is responsible for lifting heavy shield machine parts, while the auxiliary lifting system assists in lifting and precise positioning. The travel mechanism allows the crane to move along tracks, usually equipped with a motor-driven and braking system to ensure smooth operation within the tunnel. The electrical system provides power and control signals to the crane, including motors, cables, distribution boxes, and other components. The control system enables various crane actions through a control panel or remote control, offering high precision and safety. Its overall structure is compact, making it suitable for working in narrow spaces within tunnels. With high load capacity and flexibility, this crane is an indispensable key piece of equipment in shield tunneling construction.
The shield gantry crane is primarily used for lifting and precise positioning of shield machine components, ensuring smooth operation of the shield machine in tunnel construction.
The crane efficiently lifts heavy pipe segments, enhancing work efficiency in tunnel construction and meeting the heavy lifting requirements for pipe components.
Suitable for various complex tunnel construction environments, especially in confined underground working faces, providing precise lifting and transportation operations.
| Cap（t） | 400 | |||
| Work duty | A3 | |||
| Span Height（m） | 33 | 34 | ||
| Lifting Height | Main lifting (m) | 24(on-track)23(Under-track) | 24(on-track)23(Under-track) | |
| Aux lifting (m) | 22(on-track)26(Under-track) | 22(on-track)26(Under-track) | ||
| Speed | Lifting | Main lifting (m/min) | 0.09-0.9 | 0.09-0.9 |
| Aux lifting (m/min) | 7 | 7 | ||
| Travelling | Trolley travelling | 1.6-16 | 1.6-16 | |
| Crane travelling | 1.15-11.5 | 1.15-11.5 | ||
| Main dimension （mm） | L1 | 2500 | ||
| L2 | 3500 | |||
| H1 | 3196 | |||
| H2 | 22000 | |||
| B | 14000 | |||
| B1 | 22800 | |||
| b1 | 1920 | |||
| b2 | 1260 | |||
| W | 4500 | |||
| D | 6000 | |||
| Max. Wheel Loading （kn） | 406 | 415 | ||
| Steel Track Recommended | QU100 | |||
| Power Supply | Based on your power supply | |||
| Spreader rotation angel | ±90° | |||
| Applicable max. cutter head diameter (m) | 15 | |||
The portal structure spans across the tunnel working face, enabling flexible operation in confined, narrow tunnel environments, meeting the demands of complex construction conditions.
The shield gantry crane boasts a powerful lifting capacity, easily handling large shield machine components and heavy pipe segments, fulfilling the high lifting requirements of tunnel construction.
Equipped with an advanced control system, the crane supports both manual and remote operation, achieving high-precision lifting and positioning, which enhances construction efficiency and safety.
Typically mounted on tracks, the crane can move freely along the tunnel direction, allowing it to quickly respond to different operational needs.
The structure adopts a modular design, making transportation, installation, and disassembly easy. This is particularly suitable for projects that require frequent site relocations.
Designed to handle underground humid and dusty conditions, some models also feature explosion-proof capabilities, making them suitable for operations in special geological conditions.
1. Industry Position
Founded in 2006, Dafang Heavy Machinery covers an area of 1,580 acres and employs over 2,600 people. With an annual sales revenue of 3.566 billion RMB, the company focuses on two main business sectors: lifting machinery and steel structures. Major products include single and double girder bridge and gantry cranes, electric hoists, steel structure bridges, prefabricated buildings, and industrial plants. Dafang serves critical sectors such as military industry, aerospace, nuclear power, offshore engineering, metallurgy, and mining. Its products are exported to over 100 countries and regions, including the United States, Russia, and Southeast Asia.
Annually, Dafang manufactures 30,000 single-girder cranes, more than 12,000 double-girder and gantry cranes, and 30,000 electric hoists. Based on production scale, sales volume, and brand recognition, the company ranks among the top three in China’s crane industry.
2. Core Technologies
Dafang’s R&D team consists of over 260 members, including 104 with senior or intermediate engineering qualifications. The company invests 3.8% of its annual sales into technology development. It has obtained 12 international invention patents, 50 national invention patents, 415 utility model patents, and achieved 43 scientific and technological milestones. Dafang was the first in the industry to adopt anti-sway and automatic positioning technologies.
In 2016, Dafang became the first enterprise in Henan Province to implement smart crane applications and to introduce remote monitoring technology. The company also developed the multifunctional brewing crane, filling a domestic market gap. In 2021, Dafang was the first in the industry to be certified for unmanned intelligent cranes. In 2022, it undertook a project for a tower crane at a commercial satellite launch site.
3. Manufacturing Capability
Dafang Heavy Machinery is equipped with advanced in-house designed manufacturing equipment, including 1,500-ton press grooving machines, extrusion machines, and roller machines. The company has established leading domestic workshops, including an electrical assembly line, steel pre-processing line, paint finishing line, and China’s first practical single-girder lean production line. Precision machinery includes imported German NILES CNC gear grinding machines and Japanese MAZAK machining centers.
Dafang strictly follows refined manufacturing processes, adhering to the principle of “doing it right the first time, zero defects.” This commitment to quality is deeply ingrained in every employee, ensuring that every product delivered meets the highest standards.
4. Service Assurance
Dafang upholds a “comprehensive, high-quality” service standard, providing users with fast, attentive, and thorough one-stop services. With 24/7 online support, choosing Dafang means complete peace of mind. Just tell us what you need—we’ll take care of the rest.
Our shield gantry cranes have a powerful lifting capacity, capable of handling lifting demands ranging from tens of tons to several hundred tons, catering to different load requirements in tunnel construction.
The shield gantry crane is equipped with an advanced control system that is easy to operate, supporting both manual and remote operation, enhancing construction accuracy and safety.
We provide comprehensive after-sales service to ensure the long-term stable operation of the equipment. Our technical team will regularly remind you to check the equipment and offer necessary maintenance and repair consulting services.
The shield gantry crane is specially designed to handle complex tunnel construction environments such as narrow spaces, humidity, and dust, offering excellent adaptability.
