Double Girder Gantry Crane

Double girder gantry cranes High CAPACITY Stable Security. Double Girder Gantry Crane is suitable for loading and unloading in sites of open storage, material yard, railway freight station, port terminal and so on.

• Lifting capacity: Up to 500ton
• Lifting height: Up to 30m or customized
• Lifting span: 3 to 35m; Working class: A5-A7
• Working temperature: -20 to 40 degree C

Description

MG Type Double Girder Gantry Crane (Truss-type) is made up of bridge, trolley, crane traveling mechanism and electric system.Applies to highway, bridges, power station and other Construction workshops for general handling and lifting operations. All institutions are indoor controlling, crane electric form is devided into two kinds of cables and sliding contact line, you can choose any one when you order it.

Double girder gantry cranes ; It is preferred and used seriously in every branch of the industry due to its cost, ease of maintenance and repair, no capacity limit, no size limit, design and manufacture with desired features. Much higher lifting heights can be obtained compared to single-girder gantry cranes. Double girder gantry cranes can be produced as protruding or without protrusion.
Although Portal Cranes are generally used in open fields, they can also be used in the factory. It is an alternative application to overhead cranes in factory indoor areas. Gantry cranes has more advantages than jib cranes acoording to scanning area. Gantry cranes, also called marble cranes, are suitable for all kinds of lifting and stacking works in open areas.

Features

1. Reasonable structure
2. Favorable performance
3. Smooth starting and stopping
4. Safe and reliable traveling
5. Low noise, commodious cabin and good view
6. Convenient maintenance, excellent exchange ability for parts and components
7. Saves electricity specifications

Our Gantry Cranes are completely designed by our own engineers in accordance with ISO, FEM and DIN norms. Mechanism selections are made in accordance with the desired lifting and running speeds and working class. Bridge beam deflection is calculated as 1/1000 at most. By having a quieter and more sensitive bearing system compared to its alternatives, it increases the life of the roller, wheel and gear box, and thanks to the adjustable wheel center, it can provide +/- 15 mm movement in the centers where there are rail defects.

Technical Data

Lifting capacityt(lower by sling)32/10Main Dimensions(mm)
Span(S)mm  30000m-21000m, Continuous variable spanMain Dimensions
Lifting  Height(H)40m(on the ground 10m, Underground30m)K7000
 Working systemA7(A6)W8500
SpeedHoistingm/minfully loaded 1-12 No-load 1-20B9400
Hoistingfully loaded 1-15 No-load 1-25A600
Crab travellingfully loaded 2-20 No-load 3-30H100000
Trolley travellingfully loaded 3-30 No-load 3.5-35L19000
Electric motor HoistingKW90KwC15000
Hoisting30KwL210000
Crab travelling2x4KwC25000
Trolley travelling4x7.5KwH14000
Trolley travellingKN290(260)
Number of wheels8(4)
Steel track RecommendedP38-P43
Power source  Three-phase alternating current   3-phase A.C.  50HZ 380V

Purchasing Process

FAQs About Choosing the Right Gantry Crane and Supplier

In order to obtain accurate quotes for custom overhead cranes, providing the following core information will greatly improve efficiency:

1. Key specifications: including rated lifting weight (tons), span (i.e., track spacing, meters), and lifting height (meters), which is the basis of the design.
2. Use environment and working conditions: Explain the conditions of the installation site (such as indoor/outdoor, temperature, humidity) and work level (busy level), which determines the material selection and configuration level of the structure.
3. Specific configuration requirements: clarify the drive mode (such as frequency conversion control), brand preferences for electrical components, safety devices (such as overload limiters, anti-collision systems), and whether special functions such as remote control are required.
4. Installation and service: confirm the on-site power supply conditions (voltage, frequency), installation conditions, and specific expectations for delivery time, installation and commissioning, and after-sales service.

The more detailed the information provided, the more accurate and reliable the solutions and quotations obtained.

1. Span and lifting capacity: this is the foundation.The larger the span and the higher the rated lifting weight, the material and design costs of the main beam and structure will increase significantly, and the higher the price.

2. Working level and frequency of use: The working level (A1-A8) represents the busy level and load status of the crane.Cranes with frequent and heavy-duty use require more durable motors, gearboxes and structural parts, and the cost is naturally higher than that of lightweight and occasionally used equipment.

3. Structure and configuration: The double beam is more complex and stable than the single beam structure, and the price is higher.At the same time, the lifting height, operating speed, motor brand, control system (ordinary vs frequency conversion), and the level of safety devices (such as anti-swing, load monitoring) all directly affect the final quotation.

4. Degree of customization and brand service: completely standard models have lower costs.The customized design based on the workshop environment (such as explosion-proof and high temperature), special processes (such as metallurgical special), brand added value, and after-sales guarantee system will all be reflected in the price.

In simple terms, when buying a bridge crane, it is necessary to consider “how much, how frequently, what environment and what configuration”, which determine its core value and price.

Which crane to choose mainly depends on your specific needs. You can quickly judge from the following four core aspects:

-Single-beam bridge crane: it is suitable for conventional workshops with light and medium loads (usually ≤20 tons), medium span, and low frequency of use. It is the most economical and versatile choice.
-Double-girder bridge crane: used for heavy-duty, long-span, or high-work-level occasions (such as frequent hoisting, metallurgy, heavy-duty assembly). Its stability, durability, and safety are higher, but the cost is also increased accordingly.
-Free vertical crane (cantilever/column type): suitable for fixed working points and working conditions with limited rotation range, such as beside machine tools, maintenance areas, or production line stations, it can efficiently use corner space and be installed flexibly.
-Grab crane: It is specially used for the handling, loading, and unloading of bulk materials (such as grain, coal, sand, and gravel). The only reason to choose it is that you need to deal with such unpackaged loose materials.

In simple terms, you can filter according to this logic:

First, according to the lifting weight and span, choose between a single beam and a double beam.
If the scope of operation is highly concentrated and the space is limited, consider a free vertical.
If the handling object is bulk material, it points directly to the grab type.

Yes. Our bridge cranes fully comply with and follow relevant international standards. Our company has passed a number of international certifications, such as the ISO 9001 quality management system, which guarantees that the management system ensures every aspect of the product, from design to delivery, is under high standards of quality control. Therefore, you can rest assured that our cranes are internationally competitive in terms of safety and quality.
 
In order to ensure the versatility, safety, and reliability of our products on a global scale, we strictly follow the mainstream international standard systems, including the International Electrotechnical Commission (IEC), European (EN/DIN), and the United States (ANSI/ASME) in the design and manufacturing process. For example, for the EU market, our products meet the detailed requirements of the Machinery Directive and CE certification. At the same time, we also actively adapt to specific regulations in other regions to meet the compliance needs of different customers.

Delivery times largely depend on whether the crane is standard or customized. Based on our experience, standard single-girder and double-girder cranes can be produced more quickly, while cranes with special spans, duty ratings, or environmental requirements naturally require additional engineering design time.

For each quotation, we provide an estimated production and delivery schedule based on your configuration and destination. Throughout the manufacturing process, our team maintains communication with the customer to ensure no unexpected issues arise before shipment.

Compared with many suppliers, Yangyumech mainly reflects the two differentiated advantages of high customization flexibility and clear international compliance when providing bridge cranes.

On the one hand, we focus on in-depth customized services. According to your specific needs, we can provide fully customized solutions on core parameters such as rated load capacity, span, and lifting height, and accept personalized requirements. This means that what you get is not a standard product, but exclusive equipment that accurately matches the working conditions of your workshop.

On the other hand, we attach importance to international standards and quality certification. Our products clearly meet the requirements of international certifications such as CE, which ensures that their safety and reliability can meet the mainstream standards of the international market, and provides you with additional quality confidence guarantees. Combined with our direct supply capabilities as a powerful factory, we can achieve better comprehensive value for you while obtaining compliant and customized products.

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Get In Touch

Yangyumech is a leading professional manufacturer of cranes in China. Our company integrates the processes of crane research and development, manufacturing, sales and service.