High Quality Made in China Heavy Duty 50/60/70/80/90/100t Double Girder Overhead Travelling Bridge Crane with Electric Winch Trolley Factory Directly for Sale

Customization: Available
After-sales Service: Engineer Online Support or on-Site Service
Warranty: 2 Years

Product Description

🏗️ Basic Info

Model NO.
QD Double Girder Overhead Crane EOT Crane
Certification
GS, RoHS, CE, ISO9001
Condition
New
Operation Form
Air + Ground Operation
Max Lifting Height
20-25m
Max Lifting Weight
>200t
Main Girder Form
Double Girder
Type
Beam
Running Mode
Top Running / Under Hung
Maximum Span
45m
Lifting Mechanism
Winch
HS Code
8426112000

⚙️ Product Description

Double Girder Overhead Crane

Heavy Duty Double Girder Overhead Travelling Bridge Crane with Electric Winch Trolley

Top running double girder cranes are cranes whose end trucks operate on fixed rails attached to the top flange of the runway beams or girders. The winch is the top running type and the trolley rides on fixed rails or tracks attached to the top flange of the bridge beams or girders.

These cranes carry the bulk of the heavy lifting. With spans of up to 45 meters and capacity to 300 Tons, these cranes can handle the most diversified application and environment.

Industry Applications

Industry Application Details
ManufacturingUsed for lifting and moving heavy components, machinery, and materials within factories and assembly lines.
ConstructionEmployed for lifting and placing heavy structural elements and equipment on sites.
MiningUsed for lifting materials and equipment in underground and surface mining operations.
LogisticsUsed for loading and unloading heavy cargo and containers at ports and rail yards.
Power GenerationLifting and maintaining heavy machinery in power plants, including hydroelectric and nuclear facilities.
ShipbuildingLifting large components during the construction and maintenance of aircraft and ships.
Winch Mechanism

Advantages of Winch Lifting Mechanism:

  • Higher lifting capacities and speeds classified under higher FEM working groups.
  • Utilization of commercial motors that conform to adequate standards with lower failure probability.
  • Direct shaft connection from motor to gearbox and then to the drum for shock absorption.
  • True vertical lift with a stable hook and external brakes for easy maintenance.
  • Equipped with wire rope press rollers and anti-overlapping devices to ensure safety.

📊 Product Parameters

Item Parameters
Lifting capacity1-300 tons
Lifting height1-45m
Running speed0-50 m/min
Lifting speed0-20 m/min
Power supply3p 380v 50hz/ 220v 50hz/ customized
Control methodCab control/ Wireless remote control
Protection classIP54
Work levelA4-A8

🛠️ Crane Structure Details

1. Bridge

A load-bearing beam that runs the width of the building. This is the primary structural component that connects the runways and moves the hoist forward and backward using a trolley. Girders can be made of rolled steel or welded into a steel box design.

Crane Bridge

2. Trolley & Lifting Mechanism

The trolley is a mobile platform that houses the hoisting mechanism. It includes a system of ropes, pulleys, and a motor-driven winch drum. High-tensile steel ropes ensure safety and durability during vertical movement.

Trolley Mechanism

3. End Truck

Located at each end, the end trucks enable the crane to travel along the rails. Depending on capacity, they can be equipped with 2, 4, or 8 wheels to ensure stability.

End Truck

4. Specialized Lifting Tools

Equipped with various tools: Hooks for general tasks, Grab buckets for bulk materials, and other specialized tools tailored to specific operational needs.

Lifting Tools

5. Controls & Power System

Features pendant or remote consoles for precision positioning using Variable Frequency Drives (VFDs). Power is delivered via insulated conductor bars, festoon systems, or cable reels.

Control System

📦 Manufacturing & Packaging

Shipping

❓ Frequently Asked Questions

Are you a manufacturer or a trading company?
We are an integrated production and trading enterprise, with our own independent R&D team and manufacturing facility, allowing us to offer comprehensive solutions.
Can the cranes be customized?
Yes, all products can be customized based on specific requirements and working conditions to ensure the best design for your demands.
How long is the warranty coverage?
We offer a 2-year warranty on the crane itself and an 18-month warranty on electrical components, supported by a professional after-sales engineering team.
Do you provide overseas installation services?
While products are designed for easy self-installation with detailed manuals, we can arrange for engineers to assist with installation at your location if necessary.
Can you install a crane in a workshop with limited headroom?
Definitely. We offer specialized crane solutions designed specifically for workshops with low headroom to ensure space efficiency and optimal performance.
What information is needed for a design solution?
Please provide the lifting capacity, span length, lifting height, power supply voltage, and details about the working environment and materials to be lifted.

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