The Weihua A-frame double-girder gantry crane is a classic, general-purpose gantry lifting device. Its main features are its robust structure and wide applicability, making it highly suitable for material loading, unloading, and handling operations in open-air sites.
Weihua’s A-type double-girder gantry crane is a classic general-purpose gantry lifting equipment. Its main features are a robust structure and wide applicability, making it very suitable for open-air sites for material loading, unloading, and handling. The travel mechanisms for the trolley and crane on large-tonnage models use three-in-one gearboxes for easy maintenance and are equipped with various safety measures such as high-wind alarm, anti-shaft-breaking, and anti-tipping protection.
Structural Composition
Weihua A-type double-girder gantry crane is mainly composed of the following core parts:
Bridge: As the main load-bearing structure, it typically consists of two box-type welded main girders and two box-type end carriages. Trolley rails are laid on the main girders.
Gantry Frame (Legs): Adopts an A-type structure, made of steel plates welded into variable cross-section box-type legs. The lower ends connect to the bottom cross beam, and the upper ends are connected through a portal frame to ensure the rigidity of the overall structure. Components are typically connected using high-strength bolts.
Hoisting Trolley: Runs on the rails of the main girder, responsible for lifting and transversely moving the load. Its drive mechanism is usually integrated for smooth operation.
Crane Travel Mechanism: Drives the entire crane longitudinally along the ground rails. General-purpose A-type products often use separate drives.
Electrical Equipment: Includes systems for drive, control, and lighting. Power supply methods include cable reels and safe busbars, which can be selected according to needs.
Operator’s Cab: Usually suspended below the main girder, providing the operator with a clear view and an ergonomic working environment.
Advantages & Features
Sturdy and Durable
Mature structural design, utilizing high-strength steel and high-quality components like forged wheels, ensuring long service life.
Reliable Operation
The hoisting and travel mechanisms can utilize variable frequency speed control technology, achieving smooth starting and braking, effectively protecting the lifted load.
Efficient and Convenient
Modular design with direct-coupled drive mechanisms reduces transmission components and potential failure points, effectively lowering energy consumption by about 20% and reducing operating costs.
Customizable
Intelligent functions such as anti-sway systems, automatic positioning, and remote control can be optionally equipped according to requirements, enabling precise and efficient operations.
Technical Specifications
Item
Specification
Lifting Capacity
5-800 tons
Span
18-36 meters
Lifting Height
10-15 meters
Lifting Speed
3.3-37 m/min
Crane Travel Speed
3-30 m/min
Control Mode
Floor Operation / Operator’s Cab
Applications
Weihua’s double-girder gantry crane series products are very widely used, covering almost all industrial fields requiring heavy material handling. Core application scenarios include:
Steel & Metallurgy Industry: Serves the open-air transfer and loading/unloading of billets, coils, scrap steel, etc. Its high-temperature resistant design and excellent reliability fully adapt to the harsh conditions across the entire steel enterprise process, including coking, ironmaking, and steel rolling.
Major Infrastructure Construction: Widely used for loading/unloading and handling heavy components in railway construction, road bridge erection, water conservancy projects (e.g., South-to-North Water Diversion), ports, and terminals. Its precise lifting capability ensures the safety and efficiency of large component installation.
Energy & Heavy Manufacturing: Used for assembly and transfer of large components in wind power equipment manufacturing, nuclear power construction, and heavy machinery plants. The lightweight design reduces plant structure investment, and intelligent functions aid in precision assembly.
Logistics & Warehousing: Suitable for large open-air warehouses and logistics yards for loading/unloading containers, packaged goods, or bulk materials. Efficient and smooth operation significantly improves logistics turnover efficiency.
National Major Projects & High-End Equipment: Has successfully served national key projects such as satellite launch bases (for hoisting rockets and spacecraft) and high-speed maglev test lines, proving its extremely high safety and technological advancement.
International “Belt and Road” Projects: Products have been exported to over 130 countries and regions worldwide, deeply participating in industrial construction in countries along the “Belt and Road”, such as steel base projects in Indonesia, representing Chinese high-end equipment “going global”.
A leading enterprise in China's crane industry, with an annual production capacity exceeding 100,000 sets of lifting equipment. Its smart factory ranks among the industry's top in scale and production capacity. In 2023, order volume surpassed 4 billion yuan, with its market coverage and delivery capabilities widely recognized.
Rich experience
With over six decades of deep expertise in the lifting equipment sector, our service network spans more than 170 countries worldwide. Having completed over 500,000 projects across diverse complex industrial scenarios, we have accumulated extensive application experience and solutions.
Qualifications and Honors
The company operates a National-level Enterprise Technology Center and holds over 1,800 authorized patents. It has received 135 provincial-level and higher science and technology awards, led or participated in the formulation of multiple international/national standards, and earned certifications including the National Manufacturing Single Champion title.
Quality Assurance
Strictly implementing the ISO international quality system, with automation rates exceeding 95% in critical processes. Pioneering the “New Chinese-style” structural optimization technology, significantly reducing equipment weight and energy consumption. Rigorous quality control throughout the entire production process ensures safety and reliability.
Technological Innovation
Annual R&D investment accounts for 4%-6% of revenue, with an academician-led technical team of over 1,200 members. Breakthroughs in key bottlenecks such as millimeter-level anti-sway technology (≤2mm) continuously drive the iteration of intelligent, lightweight, and low-carbon technologies.
After-sales Service
With over 300 service centers worldwide, we guarantee 24-hour rapid response. Equipped with the “Crane Butler” intelligent operation and maintenance system, we provide remote diagnostics and preventive maintenance, ensuring full lifecycle service support for your operations.
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