Description
The Weihua U-shaped double-girder gantry crane is the high-end flagship product in Weihua Group's gantry crane series, named for its unique "U"-shaped structure formed by the legs and lower crossbeam. Unlike A-type (A-frame) and L-type (inverted L-shaped) legs, the U-shaped gantry crane features vertical legs, creating a wide passageway. This structural characteristic makes it ideal for handling large, long materials and containers.
As an important member of the double-girder gantry crane family, the U-shaped gantry crane combines the high load-bearing advantages of the double-girder structure with the large passageway of the U-shaped legs. The product range covers an ultra-wide range of lifting capacities from 5 tons to 1000 tons, spans from 18 meters to 50 meters, and working classes including A5, A6, and A7, meeting diverse operational needs from general freight yard loading and unloading to offshore wind power equipment hoisting.
In terms of structural design, Weihua's U-shaped double-girder gantry crane adopts a double-girder box-shaped welded structure, with two vertical legs connected to the lower crossbeam, forming an overall "U" shape. Compared to A-type gantry cranes, the U-shaped gantry crane eliminates the traditional saddle frame structure, resulting in a lower overall height for the same lifting height. Simultaneously, due to the larger trolley track gauge, the clearance over the legs can reach nearly 7 meters, making it particularly suitable for loading and unloading long, heavy cargo and containers.
In recent years, Weihua has continuously broken industry records in the field of U-shaped gantry cranes. In 2023, Weihua's independently developed and manufactured 550-ton new Chinese-style gantry crane successfully completed heavy-load testing in Guangdong, breaking the record for the largest tonnage of a double-girder U-shaped gantry crane in my country. In October 2024, Weihua's 1000-ton double-girder gantry crane was successfully put into operation at the Fujian Fuqing Jiangyin Port National Offshore Wind Power Research and Testing Base, further solidifying Weihua's technological leadership in the field of ultra-large tonnage U-shaped gantry cranes.
This product is widely used in industries such as machinery manufacturing, metallurgy and mining, power energy, railway transportation, ports and docks, and petrochemicals. It has irreplaceable application value, especially in the fields of offshore wind power equipment manufacturing, port container loading and unloading, and railway long and long cargo transportation.
Specifications
| Lifting Opposity | Main | t | 20 | 32 | ||||||||
| Aux. | 5 | 5 | ||||||||||
| Span | m | 18 | 22 | 26 | 30 | 35 | 18 | 22 | 26 | 30 | 35 | |
| Lifting Height | 10 | 10 | ||||||||||
| 10.5 | 10.79 | |||||||||||
| Duty | A5 | A5 | ||||||||||
| Speed | Main | m/min | 7.1 | 6.3 | ||||||||
| Aux. | 9.2 | 9.2 | ||||||||||
| Trolley Traveling | 44.6 | 42.4 | ||||||||||
| Crane Traveling | 44 | 38 | 40.1 | |||||||||
| limit dimension |
L1 | mm | 7500 | 10000 | 7500 | 10000 | ||||||
| L2 | 7500 | 10000 | 7500 | 10000 | ||||||||
| L | 900 | 980 | ||||||||||
| C1 | 5000 | 7500 | 5000 7500 | |||||||||
| C2 | 5000 | 7500 | 5000 7500 | |||||||||
| main dimension |
H | mm | 13961 | 14178 | ||||||||
| H1 | 10000 | 10000 | ||||||||||
| H2 | 500 | 790 | ||||||||||
| H3 | 700 | 590 | 700 | |||||||||
| B | 12166 | 11652 | 12362 | |||||||||
| K | 7000 | 7000 | ||||||||||
| W | 10000 | 8300 | 8400 | |||||||||
| Max.Wheel Loading | kN | 360 | 380 | 400 | 445 | 460 | 250 | 265 | 280 | 315 | 330 | |
| Total Power | kw | 77 | 77 | 77 | 77 | 77 | 91.3 | 91.3 | 91.3 | 109.3 | 109.3 | |
| Crane Rail Recommended | QU70 | QU70 | ||||||||||
| Power Supply | 3-Phase A.C.50Hz 380V | 3-Phase A.C.50Hz 380V | ||||||||||
Advantages
When purchasing a marine travel lift for sale, it is recommended to conduct a professional evaluation in the following four areas:
Structural Advantages: U-Shaped Design, Ample Leg Clearance
The core competitiveness of the U-shaped double-girder gantry crane stems from its unique U-shaped leg design. The two legs connect vertically downwards to the lower crossbeam, forming a wide leg clearance. This structural layout brings three core advantages:
Ample leg clearance and excellent cargo handling: The U-shaped gantry crane has a larger trolley track gauge, with a leg clearance of nearly 7 meters, allowing large-sized cargo to easily pass between the legs. It is particularly suitable for lifting long and oversized cargo such as containers, wind turbine blades, and large steel structural components, solving the problem of traditional gantry cranes being unable to handle large loads due to leg spacing limitations.
Low overall height and good space adaptability: The U-shaped structure eliminates the saddle frame unique to A-type gantry cranes, significantly reducing the overall height for the same lifting height requirements. This feature is especially important for operating environments with aviation height restrictions or limited factory height, effectively expanding the equipment's applicability.
Stable Structure and High Load-Bearing Capacity: The double main beam layout combined with U-shaped outriggers gives the machine excellent lateral stability and anti-overturning capability. The large trolley base distance contributes to good structural stability, maintaining stability and reliability even under large span and heavy load conditions.
Load-Bearing Capacity: Wide Tonnage Range, Heavy-Duty King
Weihua U-type double main beam gantry cranes continue to lead the industry in load-bearing capacity:
Full Tonnage Range Coverage: Lifting capacities range from 5 tons to 1000 tons, with mainstream models covering 10 tons, 16 tons, 20 tons, 32 tons, 40 tons, and 50 tons, as well as ultra-large models such as 275+275 tons and 1000 tons.
Dual Lifting Point Synchronization Technology: For ultra-large tonnage models, the main lifting mechanism adopts a dual lifting point design (e.g., 275+275t), which can work independently or in tandem. Equipped with advanced synchronization control functions, it ensures that the two lifting points lift and lower simultaneously, and the load is evenly distributed.
Flexible Working Level Configuration: The working levels cover A5, A6, and A7, allowing users to choose the most suitable configuration based on actual operating frequency and conditions.
Technical Performance: Variable Frequency + PLC, Precise and Intelligent
Weihua U-shaped double-girder gantry cranes integrate cutting-edge industry technologies in their technical configuration, making them a model product of intelligent lifting equipment:
Variable Frequency + PLC Control System: All mechanisms (lifting, trolley travel, and main trolley travel) adopt variable frequency drive technology, combined with a PLC programmable controller, to achieve graded speed control from slow speed under full load to fast speed under light load. Lifting and operation are smooth and shock-free, effectively extending the equipment's service life.
High-Precision Control Capability: On the 1000-ton U-shaped gantry crane, Weihua has achieved adjustable lateral and longitudinal distances and free rotation of the lifting beam, with a control accuracy of ±1mm, meeting the precision operation requirements of offshore wind power equipment installation, etc.
Lightweight Design: The entire machine is designed using finite element analysis for structural optimization, achieving a compact structure, reduced weight, lower wheel pressure, and optimized energy consumption while meeting strength and stiffness requirements. Compared to traditional designs, the new Chinese-style U-shaped gantry crane reduces its weight by 10% to 15% while maintaining the same load capacity.
Optimized Trolley Traveling Structure: The gantry traveling mechanism adopts a multi-stage balance beam and trolley combination structure. The trolley and balance beam are connected by a half-hing, ensuring even force distribution on each wheel and smooth, reliable operation.
Key Components: High-Quality Materials, Durable and Long-Lasting
Weihua U-shaped Double-Girder Gantry Cranes adhere to high standards in the configuration of key components:
Main Girder Structure: Adopts a box-sha
Cases
