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Type Double Trolley Hook Bridge Crane

Type Double Trolley Hook Bridge Crane
Double Hoist Bridge Crane
Dual Trolley Overhead Crane
Heavy Duty Bridge Crane
Metallurgical Double Trolley Bridge Crane
Type Double Trolley Hook Bridge Crane
Double Hoist Bridge Crane
Dual Trolley Overhead Crane
Heavy Duty Bridge Crane
Metallurgical Double Trolley Bridge Crane
Authentication mark:
CCC CE ABS BV CCS
Capacity:5+5 Ton 10+10 Ton 16+16 Ton Each trolley operates independently and can perform synchronized lifting operations.
Lifting Height:Maximum Lifting Height: 16m (customizable)
Voltage/Hertz:(customizable)
Brand Name: YUNTIAN
Place of Origin: Henan, China
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Introduction

Technical Data (General Version)

Application

Features

PRODUCT INTRODUCTION

The QE Type Double Trolley Hook Bridge Crane is a heavy-duty overhead lifting solution equipped with two independent hoisting trolleys mounted on the same bridge girder system. The design allows simultaneous lifting, synchronized handling, and turning of long, oversized, or irregularly shaped loads that cannot be safely handled by a single-hook crane.Compared with conventional overhead cranes, the double trolley configuration provides greater operational flexibility, improved load stability, and enhanced lifting safety when handling steel structures, large machinery components, molds, pipes, precast concrete elements, and heavy fabrication assemblies.With working duty classifications up to A6 and lifting capacities reaching 16+16 tons, the QE bridge crane is widely used in steel plants, fabrication workshops, shipyards, power equipment factories, and heavy manufacturing facilities.

TECHNICAL DATA

Parameter Specification
Crane Type QE Double Trolley Hook Bridge Crane
Lifting Capacity 5+5T / 10+10T / 16+16T (customizable)
Span 10.5m – 31.5m (customizable)
Lifting Height 16m (customizable)
Working Duty A5 / A6
Hoisting Speed 7.9 – 13.2 m/min
Trolley Travel Speed 74.2 – 89 m/min
Bridge Travel Speed 76 – 89 m/min
Power Supply (customizable)
Recommended Rail 43kg/m, QU70
Control Method Cabin Control / Pendant / Remote Control
Application Type Tandem Lifting & Long Material Handling

APPLICATION

application
Heavy Machinery Manufacturing
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Precast Concrete Plants
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Railway & Infrastructure Projects
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Steel Fabrication Plants
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Power Equipment Manufacturing
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Shipbuilding & Ship Repair Yards

FEATURES

1
Dual Independent Trolley Design Two hoisting trolleys can operate independently or simultaneously for tandem lifting operations.
2
Improved Load Stability Ideal for handling long loads that require balanced lifting points.
3
Heavy-Duty Operation Available in A5 and A6 duty classes for continuous industrial use.
4
Reliable Electrical System Equipped with industrial-grade motors and electrical controls designed for demanding working environments.
5
Flexible Lifting Operations Suitable for: Turning loads Tilting loads Synchronized lifting Assembly line operations Heavy equipment maintenance

FAQ

What are the primary advantages of a Type Double Trolley Hook Bridge Crane compared to a single trolley crane?

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A type double trolley hook bridge crane is specifically engineered for handling extremely long, bulky, or asymmetrical loads. Key advantages include: Dual Lifting Points for Long Materials: Prevents bending, sagging, or unbalancing when lifting long steel pipes, wind turbine towers, precast concrete beams, and paper rolls. Mid-Air Workpiece Flipping: By operating the two trolley hoists at different speeds or directions, operators can safely rotate and tilt giant structures 180 degrees in mid-air. Operational Flexibility: The two trolleys can work independently for smaller separate lifts or operate in tandem for combined heavy lifting.

How does the crane ensure precise synchronization between the two trolleys during tandem lifting?

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To prevent load tilting and structural stress during joint operations, Yuntian double trolley overhead bridge cranes utilize advanced PLC Electro-Hydraulic Synchronization Controls: VFD Frequency Synchronized Drives: Both trolley travel motors and hoisting winches are controlled by closed-loop Variable Frequency Drives (VFD) with encoder feedback. Real-Time Distance & Height Sensors: Laser distance sensors continuously monitor the gap and relative height between the two trolleys, maintaining synchronization accuracy within millimeters. One-Touch Tandem Mode: Operators can easily switch to "Synchronized Control" via the wireless remote or joystick, allowing a single lever to control both trolleys simultaneously.

How is the lifting capacity defined for a double trolley crane (e.g., 50t + 50t)?

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The capacity rating of a dual trolley hook bridge crane specifies the maximum load for each individual trolley as well as the combined rating: Individual Trolley Lift: A "50t + 50t" rating means Trolley A can lift up to 50 tons, and Trolley B can lift up to 50 tons independently. Combined Lift: When operated in tandem mode, the crane can lift a combined maximum capacity of 100 tons (50t + 50t), provided the load is distributed according to the crane's structural design limits.

Can the two trolleys pass each other, or do they operate on separate track paths?

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Standard double trolley EOT cranes feature both trolleys traveling on the same pair of main girder rails, meaning they cannot cross past each other. However, custom solutions are available: Same-Rail Configuration (Standard): Both trolleys share the upper flange rail. Mechanical and laser anti-collision sensors ensure a safe minimum distance between them. Multi-Tier / Offset Configuration (Custom): For complex industrial processes requiring cross-over trolley travel, we offer double-girder or four-girder configurations with offset upper/lower trolley tracks.

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PROFESSIONAL CRANE MANUFACTURER

We are a physical factory that has been engaged in lifting manufacturing for nearly 20 years. Committed to providing all customers with high-quality services and building a long-term future A long-term business cooperation relationship.
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