Box Girder Design 30t Double Girder Gantry Cranes with Winch for Construction Sites

Product Description

Product Description

Double Girder Gantry Crane with Winch

The Double Girder Gantry Crane with Winch from Shanghai Hexin is designed for heavy-duty industrial lifting applications where robust performance and high load capacity are critical. Ideal for environments like steel plants, shipyards, and construction sites, this crane features a double girder design that provides enhanced stability and load distribution, making it perfect for handling extremely heavy loads across long spans.

The winch mechanism used in this crane provides powerful and efficient lifting, ensuring that loads are raised and lowered with precision and control. Winches are designed to deliver high torque and consistent lifting power, making them ideal for heavy-duty lifting tasks in environments where high load capacities and durability are a priority. This crane is built to offer smooth and reliable operation even in the most demanding industrial settings.

(1) Features

• Heavy Duty Lifting Capacity: Capable of handling a wide range of heavy loads, making it suitable for large-scale operations and complex lifting applications.
• Double Girder Design: Ensures superior rigidity, load-bearing capacity, and stability for lifting and moving heavy loads across long distances.
• Winch Mechanism: The winch offers high torque and robust lifting capabilities, ideal for lifting heavy loads with powerful and reliable lifting performance.
• High Lifting Height: Perfect for high-lift applications in industries such as construction, shipyards, and manufacturing, where vertical clearance is essential.
• Versatile Control Options: Choose from pendant control, radio remote control, or the cabin control upgrade for added convenience and ergonomic operation, especially in larger or more complex work environments.
• Work Duty: Suitable for A5 to A7 work duty cycles, making it ideal for medium to heavy-duty operations in demanding industrial settings.
• Durability and Power: The winch mechanism ensures reliable performance and high load handling in tough industrial environments, such as steel processing and large-scale material handling.
• Safety Features: Equipped with overload protection, limit switches, and emergency stop systems for safe operation in high-risk environments.

(2) Making an Informed Purchase Decision
 

When selecting the Double Girder Gantry Crane with Winch, it is crucial to evaluate the lifting capacity, required load distribution, and environmental factors. This crane is built for industries where heavy-duty lifting and high load capacities are required, such as steel manufacturing, construction, and shipyards.

The winch mechanism offers significant advantages in handling large and heavy loads with a powerful and reliable lifting system, but it may not offer the same precise vertical movement as a hoist. If your application demands fine control or smooth vertical lifting, a hoist may be the better option. However, if your operations require high lifting capacity, consistent power, and durability under heavy-duty conditions, a winch will provide you with the necessary strength and reliability.

Additionally, the cabin control upgrade offers operators enhanced visibility, ergonomics, and convenience, particularly in larger work environments with more complex operational demands. At Shanghai Hexin, our team of specialists is ready to help you determine the best lifting solution for your project. Contact us for a detailed quote and tailored advice on selecting the ideal crane to meet your specific operational needs.

 

Product Parameters

Technical Parameters:

Parameter	Value
Lifting Capacity	Customizable (heavy-duty)
Span	Customizable (up to 30 meters)
Lifting Height	Up to 30 meters (depending on configuration)
Travel Speed	20-60 m/min (adjustable)
Lifting Speed	8-12 m/min (Winch)
Power Supply	380V, 50Hz, 3-phase (standard)
Control Method	Pendant, Radio Remote Control, or Cabin Control (optional)
Material	Q235B steel (standard), Q355B steel (optional)
Winch Type	Heavy-duty, high-efficiency winch mechanism
Safety Features	Overload protection, limit switches, emergency stop
Work Duty	A5 to A7 (medium to heavy-duty)

 

Product Structure

Understanding the Structure of a Double Girder Gantry Crane

A double girder gantry crane features two parallel girders that span the width of the crane, providing superior strength and load-bearing capacity. This structure is commonly used for heavy-duty lifting tasks where stability and high load capacities are essential. The crane includes key components such as the main girders, end trucks, hoist trolley, and wheels that travel along rails or tracks mounted on the ground or supporting structure.
The double girder design provides enhanced rigidity, making it ideal for lifting and transporting heavy loads over long spans, commonly used in industries like steel mills, shipyards, and heavy manufacturing plants. Understanding these structural elements helps in selecting the right crane for your lifting needs.

Gantry Structure (Main Girders and Legs)

The gantry structure forms the crane's framework, providing strength and stability for heavy lifting. Key components include:

Main Girders (Beams): These horizontal beams span the crane's width, supporting the hoist and load. The double girder design enhances load-bearing capacity and stability, typically constructed from high-strength steel.

Legs (Columns): The legs support the girders and connect the crane to the ground or rails. For rail-mounted cranes, the legs feature wheels that move along tracks, while in some configurations, they may include adjustable heights for specific lifting needs.

Trolley and Hoisting Mechanism

The trolley is a mobile platform that travels along the main girders, supporting the winch system used for lifting heavy loads. The winch mechanism includes components that provide powerful lifting capabilities.

Winch and Ropes: The winch utilizes high-tensile ropes to lift and lower loads, with the rope winding and unwinding around a drum to control vertical movement. The winch is designed to handle heavy-duty lifting tasks with precision and reliability.

Trolley Motor: Powered by motors, the trolley moves horizontally along the main girders, positioning the winch directly above the load to ensure efficient lifting and placement.

Traveling Mechanism

The traveling mechanism allows the double girder gantry crane to move horizontally along its track or rails. It features motorized end trucks mounted at the base of the crane's legs, which are equipped with wheels.

The number of wheels can be customized to meet the specific needs of the customer, ensuring optimal load distribution and smooth movement. These end trucks are powered by motors, enabling precise and efficient travel across the work area for effective load handling over long distances.

 

Hook

Our cranes are equipped with a variety of lifting tools designed for diverse applications.

The hook is ideal for general lifting tasks, providing a reliable connection for lifting and moving loads safely.

The grab bucket is perfect for handling bulk materials, allowing for efficient and secure lifting of loose or granular items.

Additionally, we offer a range of other specialized lifting tools tailored to meet specific operational needs, ensuring maximum efficiency and safety for your lifting operations.

Controls 

Control boxs are typically mounted on the crane or hoist and the pendant or remote console allows the operator to run the crane. The controls operate the drive and hoist motors, and can control Variable Frequency Drives (VFDs) to control hoist speed for precise load positioning.

Power Supply System

Insulated conductor bars, festoon systems (flat cables), or cable reels bring power to the crane.

 

Safety Devices: To ensure the seamless operation of the crane and to prevent potential personal injuries or mechanical failures, our safety apparatus
goes beyond basic electric protective devices or alarm bells. It includes a comprehensive range of essential equipment, as detailed below:

1. Overload Limit Switch
2. Rubber Buffers
3. Electric Protective Devices
4. Emergency Stop System
5. Voltage Lower Protection Function
6. Current Overload Protection System
7. Rail Anchoring
8. Lifting Height Limit Device

Of course, we also offer a customized service.To provide you with the most accurate and tailored design solution, please share the following details:

1.Lifting Capacity:
Please specify the maximum weight your crane needs to lift. This critical information enables us to design a system that can handle your loads safely and efficiently.

2.Span Length (Rail Center to Rail Center):
Provide the distance between the centers of the rails. This measurement directly impacts the overall structure and stability of the crane we'll design for you.

3.Lifting Height (Hook Center to Ground):
Indicate how high the hook needs to reach from the ground level. This helps determine the appropriate mast or girder height for your lifting operations.

4. Rail Installation:
Have you already installed the rails?If not, would you like us to supply them?Additionally, please specify the required rail length. This information helps us plan the complete setup for your crane system.

5. Power Supply:
Specify the voltage of your power source.Different voltage requirements affect the electrical components and wiring design of the crane.

6. Working Conditions:
Describe the types of materials you'll be lifting and the ambient temperature. These factors influence the choice of materials, coatings, and mechanical properties for the crane to ensure its durability and optimal performance.

7. Workshop Drawing/Photo:
If possible, sharing a drawing or photo of your workshop would be highly beneficial. This visual information helps our team better understand your space, layout, and any potential obstacles, allowing us to tailor the crane design more precisely to your site.

 

Company Profile

Founded in 2007, our company's entrepreneurial journey began in the lifting machinery industry. As the business expanded, we established a modern manufacturing facility to meet growing demand. In 2024, we launched the brand Hexin Crane and set up our office in Shanghai. Our mission remains clear: Helping to Lift World.

At Hexin Crane, we specialize in the design and production of both standardized and customized lifting machinery. With extensive expertise, particularly in overhead cranes and gantry cranes, we provide tailored solutions to meet the specific needs and operational requirements of our clients. No material or design challenge is too complex for us-our team is committed to delivering innovative solutions that ensure maximum efficiency and safety.

Our products are exported to over 20 countries worldwide, serving a diverse range of customers, including end-user factories, distributors, and industry peers. In addition to complete crane systems, we supply crane components and OEM services to clients abroad.

With a strong international presence, it's likely we already offer our products and services in your region. Feel free to reach out-we look forward to helping you with your lifting needs.

Certifications

Exhibitions

Our quality and reputation attracts many customers

Packaging & Shipping

FAQ

Q1: Are you a manufacturer or a trading company?
We are an integrated production and trading enterprise, with our own independent R&D team, manufacturing facility, and professional marketing department. This integrated structure allows us to offer comprehensive solutions and maintain a competitive edge in the market.

Q2: Are customization options available?
Absolutely. We understand that each customer's needs are unique. That's why we offer full customization on all our products to suit your specific operational requirements. To ensure we provide the best solution, we encourage you to provide detailed information about your needs. Our expert team will then design the most optimal solution, tailored to meet your exact specifications, while minimizing costs and maximizing efficiency.

Q3: How long is your warranty coverage?
We offer a 2-year warranty on the crane itself and an 18-month warranty on electric components. Should any issues arise, our dedicated after-sales team and professional engineers will promptly assist in troubleshooting and resolving the issue. Support is available via email or video conference for efficient diagnosis. If the issue is found to be related to quality, we will swiftly send any necessary replacement parts via air freight to minimize downtime and ensure a quick resolution.

Q4: Do you provide overseas installation services by engineers?
While we typically provide a detailed instruction manual for self-installation, we also offer the option of overseas installation services in specific cases. Our products are carefully packaged and designed for easy installation, which helps reduce costs and streamline the setup process. If necessary, we can arrange for our engineers to assist with installation at your location.

Q5: What other types of products do you offer?
We offer a broad range of lifting solutions, including but not limited to overhead bridge cranes, gantry cranes, jib cranes, monorail cranes, workstation cranes, and various other construction lifting machinery. Our sales specialists are always available to help you choose the most suitable equipment for your specific needs.

Q6: If we have an urgent need, can you arrange prompt delivery?
Yes, we understand the urgency of your requirements. Once your order parameters are confirmed, we prioritize urgent orders and work diligently to expedite the production and shipping process. Our efficient production systems and logistics network ensure that you receive your products quickly and reliably, without compromising on quality.

Q7: I have limited headroom in my workshops.
Is it possible to install a crane in that space? Definitely. We offer specialized crane solutions designed for workshops with low headroom. Our experienced engineers will work with you to create a customized design that fits your space perfectly, ensuring both optimal performance and space efficiency.

Q8: Do you supply lifting and rigging tools?
Yes, we provide a full range of lifting and rigging tools, including hooks, electromagnetic devices, grab buckets, and more. Please consult with our sales team to discuss the specific tools and accessories that best suit your needs.

Q9: Do you accept OEM/ODM business?
Certainly. We have extensive experience in OEM/ODM manufacturing and have collaborated with leading crane brands and customers worldwide. Whether you need customized products or full OEM solutions, we are equipped to meet your specifications.

Q10. What payment methods do you accept?
We accept T/T, bank transfers, L/C, PayPal, and other major payment platforms.