The Weihua A-type double-girder gantry crane is a core product in the Weihua Group's gantry crane series. Named for its A-shaped leg structure, it is a high-performance lifting device specifically designed for outdoor heavy-duty operations. As the most powerful and structurally stable model in the gantry crane family, it is widely used in ports, railway freight yards, open-air warehouses, wind power assembly bases, and various large-scale logistics transfer centers, undertaking critical tasks such as loading, unloading, handling, and stacking heavy materials.
In terms of product positioning, the A-type double-girder gantry crane covers an ultra-wide range of lifting capacities from 5 tons to 800 tons, spans from 6 meters to 50 meters, and working classes including A5, A6, and A7, meeting diverse needs from general loading and unloading operations to high-frequency heavy-duty conditions. This wide range of specifications makes it one of the most adaptable and widely used gantry crane products on the market.
In terms of structural design, the A-type double-girder gantry crane adopts a classic double-girder box-shaped welded structure, with the two legs extending outwards in an A-shape, forming a stable triangular support system. This structural layout offers two core advantages: first, strong anti-overturning capability, effectively resisting the effects of strong winds and other severe weather conditions in outdoor operations; second, excellent lifting stability, with the double main beams sharing the load and distributing stress evenly, ensuring that heavy objects do not sway or shift during lifting.
The Weihua Type A double-girder gantry crane strictly adheres to a lightweight and modular design philosophy, supported by computer-aided design and finite element analysis. It is manufactured using high-strength steel and new processes, optimizing the overall weight while ensuring structural strength. This product comes standard with a variable frequency speed control system, enabling smooth starting and braking, precise positioning, easy operation, stable operation, and reliable safety.
Parameter
Cap
Main
t
5
10
20
32
50
75
100
160
200
320
Aux.
5
5
10
20
20
50
50
80
Span
m
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
18
22
26
30
35
LiftingHeight
10
12
10
12
10
12
10
12
10
12
12
12
15
15
15
-
10.5
12.5
10.79
12.79
10.95
12.95
12.79
13.24
15.72
15.75
16.5
Duty
A5
A5
A5
A5
A5
A5
A5
A5
A5
A5
Speed
Main
m/min
12.5
8.5
7.2
7.5
5.9
3.9
3.1
3.5
3.5
3.6
Aux.
-
-
12.7
12.7
13.2
7.2
7.2
5.9
5.9
6
Trolley Traveling
37.2
43.8
36.6
37
38.5
38.4
33.9
22.5
29
16.7
Crane Traveling
37.7
37.7
38
44
38
37.8 44
4.1~41
3.4~34
2.8~28
2.8~28
2.8~28
limit dimension
L1
mm
6500
9000
6500
9000
7500
10000
7500
10000
8000 10500
8000
10000
8000
10000
1030
1330
1030
1330
1230
L2
6500
9000
6500
9000
7500
10000
7500
10000
8000 10500
8000
10000
8000
10000
1030
430
1030
430
1230
L
-
-
900
980
1195
1245
1315
1825
1700
2380
C1
5000
7500
5000
7500
5000
7500
5000
7500
5000 7500
5000
7000
5000
7000
3000
3000
3500
3500
C2
5000
7500
5000
7500
5000
7500
5000
7500
5000 7500
5000
7000
5000
7000
2500
2500
3000
3500
main dimension
H
mm
13804
15754
14654
16644
14836
14936
15036
16906
17006
15158 15258 15358
17258
17358
15760
15860 15960
17920
17924
18245
1 18345 18525
18325 18425
18808
18875
21190
22285
23003
H1
10000
12000
10000
12000
10000
12000
10000
12000
10000 12000
12000
12000
15000
15000
15000
H2
-
-
500
790
950
790
1240
720
750
1500
H3
540
540
645
645
700
590
646
646
700
900
1045
590
590
590
B
8154
8754
8754
9750
9260
10466
9656
10522
10522
11496
12040
13400
14832
14832
16832
K
1400
2000
2000
2500
2500
4400
4400
4200
4500
5000
W
6600
7200
7200
8000
7500
8300
6500
7000
7000 7500
8500
9000
10000
10000
10000
Max.Wheel Loading
kN
180
185
190
220
225
220
225
230
270
280
340
350
368
402
419
240
250
260
285
295
335
345
355
380
395
239
240
240
256
270
305
304
304
330
340
340
345
350
360
370
410
415
430
450
455
385
390
400
435
440
Total Power kw
31.8
36.5 45.5
69
77
95.3
113.3
141.5
157.5
147
162
162
242
299
476
Crane Rail Recommended
43Kg/m
43Kg/m QU70
QU80
43kg/m
QU80
QUBO
QU80
QU80
QU100
QU100
QU120
Power Supply
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
3-Phase A.C.50Hz 380V
Feature&Advantages
1. Structural Advantages: Classic A-Type Design, Stable and Reliable
The core advantage of the A-type double-girder gantry crane lies in its classic A-shaped outrigger design. The two legs extend outwards in a V-shape, forming a stable triangular support system with the lower crossbeam. This structural layout has a natural stability advantage in terms of physics and mechanics:
Outstanding Resistance to Severe Weather: The wide base design of the A-type outriggers effectively lowers the overall center of gravity, giving the crane stronger anti-tipping capabilities. Combined with standard rail clamps, anchoring devices, and other windproof facilities, it can maintain safety and stability under extreme weather conditions such as typhoons and storms.
Excellent Adaptability to Large Spans: Thanks to the mechanical characteristics of the A-type structure, this model can easily achieve a maximum span of 50 meters, covering a wider working area while ensuring stability.
Fully Welded Box Girder Structure: The main beam adopts a box-shaped welded structure, featuring high rigidity, low deformation, and strong load-bearing capacity. The trolley traveling mechanism uses a separate drive system to ensure the synchronization and reliability of the entire machine's operation.
2. Load Capacity: Wide Tonnage Coverage, King of Heavy Duty
Compared to L-type single-girder gantry cranes (maximum lifting capacity 50t), A-type double-girder gantry cranes significantly increase the maximum lifting capacity to 800 tons, making them truly heavy-duty lifting equipment.
Wide Tonnage Coverage: A full range from 5 tons to 800 tons is available, allowing users to choose the most suitable tonnage level according to their actual needs. Furthermore, mainstream models support main and auxiliary hook configurations; the main hook is used for lifting large tonnage objects, while the auxiliary hook is used for auxiliary operations, greatly improving operational flexibility.
Customizable Working Levels: A-type double-girder gantry cranes cover three working levels: A5, A6, and A7. A5 is suitable for scenarios with moderate working frequency (such as general freight yard loading and unloading), A6 is suitable for scenarios with more frequent working, and A7 is designed for high-frequency, high-intensity continuous operation conditions.
3. Technical Performance: Variable Frequency Speed Control, Precise and Efficient
Weihua A-type double-girder gantry cranes keep pace with industry advancements in technical configuration, incorporating modular design, variable frequency speed control, and anti-sway control into the product:
Variable Frequency Speed Control System: The hoisting, trolley traveling, and main trolley traveling mechanisms all utilize variable frequency drive technology, providing smooth acceleration characteristics and multiple operating speed options. Start-up and braking are smooth and shock-free, resulting in more precise operation, with particularly significant advantages when lifting precision and valuable goods.
Lightweight Design: Adopting a double-girder off-center rail and compact winch trolley structure, the overall weight is reduced by 10%~15% compared to traditional designs. Reduced weight leads to lower wheel pressure, consequently reducing the requirements for the track foundation and saving on civil engineering investment.
High-Efficiency Transmission System: The hoisting mechanism uses a direct-drive type, reducing intermediate transmission links, lowering the number of failure points, and improving transmission efficiency. The traveling mechanism uses a three-in-one geared motor, with a compact structure and convenient maintenance.
4. Key Components: High-Quality Materials, Durable and Long-Lasting
Weihua A-Type Double Girder Gantry Crane adheres to high standards in the selection of materials for key components:
Wheels: Utilizing 65Mn forged wheels, offering excellent wear resistance and a service life far exceeding that of ordinary cast steel wheels.
Reducer: The trolley mechanism employs a hardened gear reducer, providing strong load-bearing capacity, smooth transmission, and low noise.
Drum and Pulleys: Employing rolled pulleys and welded drum processes, resulting in compact dimensions, light weight, and high strength.
Electrical System: All motors are Y-series high-efficiency motors, coupled with a new electrical control box, ensuring reliable operation and low energy consumption.
As an outdoor operating equipment, the Weihua A-Type Double Girder Gantry Crane is comprehensively equipped with safety protection features:
Wind Protection System: Standard configuration includes rail clamps, with optional anchoring devices and anemometers. The anemometer monitors ambient wind speed in real time, automatically alarming and prompting a stop to operation when the wind speed exceeds a set threshold.
Anti-tipping and anti-shaft breakage protection: Anti-tipping devices and anti-shaft breakage protection are installed at key connection points, eliminating safety hazards from the structural design level.
Intelligent monitoring function (optional): Supports integration with crane safety management and monitoring systems, enabling real-time monitoring of equipment operating status, load conditions, cumulative working hours, and other data. This allows for preventative maintenance and remote fault early warning, effectively reducing the risk of sudden downtime.
Optional functions: In addition, anti-sway function, vertical lifting function, remote control function, and automatic/semi-automatic control function are available as options, further improving operational convenience and work accuracy.
6. Economic efficiency: Life cycle cost advantage
Although the initial purchase cost of a Type A double-girder gantry crane is higher than that of a single-girder model, its economic advantage is significant from a life cycle perspective:
Extra-long service life: Utilizing high-strength structural steel and reinforced design, the design service life of Type A double-girder gantry cranes generally exceeds 20 years, with some large equipment reaching over 30 years.
Low failure rate: With a mature and stable structure and high-quality key components, the daily failure rate is significantly lower than that of typical products, reducing production losses due to maintenance downtime.
Low maintenance costs: Modular design and standardized parts reduce maintenance difficulty and spare parts costs.
Energy optimization: The application of variable frequency speed control technology reduces overall energy consumption by 10%~15% compared to traditional models, resulting in considerable electricity cost savings over long-term operation.
Application
1. Port Terminals
Port terminals are one of the most widespread application areas for Type A double-girder gantry cranes. In container terminals, general cargo terminals, and bulk cargo terminals, this equipment undertakes core operational tasks such as ship loading and unloading, yard transfers, and freight car loading and unloading.
Typical applications include: container lifting (with spreader), steel loading and unloading (wire, plate, profiles, etc.), bulk cargo grab operations (with grab buckets for coal and ore loading and unloading), and large equipment lifting. The wind resistance and heavy-load characteristics of Weihua Type A double-girder gantry cranes are particularly suitable for the harsh environment of ports, characterized by high humidity, high salt spray, and strong winds.
2. Railway Freight Yards
Railway freight yards are another core application scenario for Type A double-girder gantry cranes. This equipment is arranged parallel to the railway line for loading and unloading goods within train carriages, covering various cargo types such as steel, timber, containers, and large components.
Railway freight yard operations place high demands on equipment span and lifting height. Weihua's Type A double-girder gantry crane, with a maximum span of 50 meters and a lifting height exceeding 15 meters, can easily cover the loading and unloading areas of railway lines. Simultaneously, the auxiliary hook configuration improves the efficiency of loading and unloading small items, and the coordinated operation of the main and auxiliary hooks makes train loading and unloading faster.
3. Open-air freight yards and logistics parks
Various open-air storage yards, warehousing and logistics parks, building materials markets, and other locations require frequent loading, unloading, transfer, and stacking of materials. The Type A double-girder gantry crane, with its large span and lifting height, can cover a large operating area, achieving efficient cargo flow.
Typical cargoes include: steel (rebar, H-beams, steel pipes, etc.), stone (raw blocks, slabs), timber (logs, slabs), and large machinery. Combined with electromagnetic chucks, grab buckets, and other lifting devices, it can also achieve efficient handling of bulk materials.
4. Wind Power Energy Sector
In recent years, with the rapid development of the wind power industry, the application of Type A double-girder gantry cranes in wind turbine equipment manufacturing and wind farm construction has become increasingly widespread.
The manufacturing and assembly of wind turbine equipment involves the hoisting of numerous large and heavy components, including wind turbine towers, nacelles, and blades. These components are individually heavy (a single tower section can weigh tens of tons) and long (blades can exceed 50 meters), placing extremely high demands on the load-bearing capacity and stability of the lifting equipment. Weihua's Type A double-girder gantry cranes have a lifting capacity covering up to 800 tons, and with specialized lifting tools, can meet the hoisting needs of various wind turbine equipment.
Notably, Weihua has successfully manufactured and delivered a 3000-ton ultra-large gantry crane, which can be used for equipment installation in offshore wind power bases, demonstrating Weihua's technological strength in the field of large gantry cranes.
5. Iron and Steel Metallurgy Industry
Raw material storage yards, finished product warehouses, and transfer warehouses in steel enterprises are important application scenarios for Type A double-girder gantry cranes. The steel industry, characterized by heavy materials, high operating frequency, and harsh environments (high temperatures, dust), places high demands on lifting equipment.
Weihua's A-series products, with their heavy-duty capacity and high reliability, are widely used in the steel industry. They can handle the unloading and storage of raw materials such as iron ore and coke, as well as the hoisting and loading of finished products such as steel billets, wire rods, and plates.
6. Water Conservancy, Hydropower, and Engineering Construction
In water conservancy projects, thermal power plants, and large-scale infrastructure projects, the A-type double-girder gantry crane can be used for the installation and maintenance of large equipment, and the transfer of building materials.
Note: For detailed information on specific model selection, technical solutions, or to obtain a quote for Weihua's A-type double-girder gantry cranes, please contact Weihua Group's official sales channels. Professional engineers will provide customized solutions based on your specific working conditions.
Company Strength
1. Company Overview and Industry Position
Henan Weihua Heavy Machinery Co., Ltd., founded in 1988, is a core holding subsidiary of Weihua Group. Headquartered at No. 18 Shanhai Avenue, Changyuan City, Henan Province, known as the "Capital of Lifting Machinery in China," the company boasts a registered capital of RMB 1.066 billion. It is a leading enterprise in China's crane manufacturing industry and one of the world's largest industrial crane manufacturers. As a national manufacturing single-item champion enterprise, Henan Weihua holds a significant position in the domestic and international lifting machinery industry.
2. Main Business and Product System
The company focuses on the research, development, manufacturing, and sales of bridge cranes, gantry cranes, electric hoists, and new intelligent lifting equipment. Product types cover multiple series including general-purpose bridge cranes, European-style cranes, metallurgical cranes, explosion-proof cranes, and port gantry cranes, meeting the complex operational needs of various industries. With its modular, lightweight, and intelligent design concepts, Henan Weihua's products are at the forefront of the industry in terms of structural performance, safety, reliability, and service life.
3. Application Areas and Market Coverage
Henan Weihua's products are widely used in many key sectors of the national economy, including machinery manufacturing, metallurgy, power energy, port logistics, railway transportation, petrochemicals, and construction engineering. The company's products not only sell well in all provinces, municipalities, and autonomous regions of China, but are also exported to more than 100 countries and regions in Southeast Asia, the Middle East, Africa, Europe, and the Americas, serving numerous Fortune 500 companies and key national engineering projects, earning a good international reputation.
4. Technology R&D and Quality Assurance
The company highly values technological innovation and has established several high-end R&D platforms, including a national-level enterprise technology center, a postdoctoral research station, and the Henan Provincial Lifting Machinery Engineering Technology Research Center. In recent years, Henan Weihua has actively promoted intelligent and digital manufacturing transformation, accumulating over a thousand national authorized patents and participating in the formulation of multiple national and industry standards. In terms of quality management, the company has passed ISO9001, ISO14001, and ISO45001 international system certifications and has successively won numerous honors such as "China Famous Brand Product," "National Quality Benchmark," and "National Technological Innovation Demonstration Enterprise," establishing a comprehensive quality control system from raw materials to finished products.
