QE Double-Trolley Hook Overhead Crane

For buyers who need two hook trolleys on one bridge for independent jobs, long-load tandem lifts or flexible multi-point handling.

The QE double-trolley hook overhead crane uses two trolley lifting systems on one general bridge crane. The source states that the trolleys can lift together or work separately and lists working classes A1–A8 for the product family.

For procurement, the most important data are not only total capacity but also maximum load per trolley, load length, center of gravity, lifting-point spacing and the permitted height difference during tandem operation.

Quick Specifications

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Product Overview

General bridge crane with two trolleys that can lift together or operate independently.

Source lists working class A1–A8.

Multiple control combinations are available according to the source.

Where the source page does not publish a numerical capacity, span, speed, duty, positioning accuracy or other guaranteed performance value, the final value should be selected and agreed from the actual project rather than copied from a similar crane.

Why Choose QE Double-Trolley Hook Crane?

Independent or Tandem Use

One crane supports separate trolley work and combined long-load lifting.

Encoder / Inverter Coordination

Source-listed double-trolley control technology supports coordinated operation.

Broad Duty Selection

Source lists A1–A8, allowing the final design to be matched to actual usage rather than one fixed duty.

Flexible Control

Multiple control combinations can be configured.

Long-Load Handling

Two lifting points improve control of long or large structures.

Product Images

Source image associated with the QE Double-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.	Source image associated with the QE Double-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.	Source image associated with the QE Double-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.
Source image associated with the QE Double-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.	Source image associated with the QE Double-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.	Source image associated with the QE Double-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.

Main Crane Components

Technical Parameters

Source-Confirmed Features & Buyer-Defined Options

Source-confirmed product facts:

• General bridge crane with two trolleys that can lift together or operate independently.
• Source lists working class A1–A8.
• Multiple control combinations are available according to the source.
• Double-trolley control uses encoders and CI-card inverter technology.
• Source reports forged/rolled composite wheel process with about 20% longer life than traditional forged-wheel process.

Buyer-defined items:

• Capacity and total suspended load
• Span / lifting height / runway length
• Load geometry and lifting attachment
• Operating frequency and working duty
• Control and safety functions
• Positioning / synchronization / automation where applicable
• Installation, testing and commissioning scope

Application Scenarios

How to Select the Right QE Double-Trolley Hook Crane

1. Provide Total and Per-Trolley Load

Center of gravity can make trolley loads unequal.

2. Provide Lifting-Point Spacing

Defines trolley travel range during tandem work.

3. Define Synchronization Requirement

State allowable hook-height difference or load tilt.

4. Define Independent Duties

Provide the maximum load each trolley handles alone.

5. Select Working Duty

Use actual cycles and load spectrum rather than defaulting to a high class.

Double-Trolley RFQ Check

Safety & Control: What Buyers Should Confirm

Installation & Maintenance

Before manufacture and installation, confirm runway span, rail / runway-beam condition, elevation, straightness, available headroom, power supply and erection access. Special attachments, multi-trolley systems, cantilevers, suspended runways and automated layouts should be coordinated with the workshop or yard drawing before production.

Maintenance should follow the supplied crane manual and actual duty. Inspection normally covers the hoisting mechanism, brakes, ropes, hooks / attachments, wheels, drives, fasteners, limits and electrical systems, with additional checks for magnets, grabs, clamps, sensors, encoders or automation hardware where fitted.

What Information Do We Need for a Quote?

Frequently Asked Questions

How is the final crane capacity selected?

Use the total suspended load, including the load itself plus any beam, grab, magnet, clamp, spreader or rigging that remains below the hook.

Can the capacity, span and lifting height be customized?

Yes, these values are project-specific unless a source range is explicitly listed on this page. Provide the workshop / yard data for engineering selection.

What should I provide for a faster quotation?

Provide load drawings or dimensions, maximum suspended load, span, lifting height, runway length, operating cycle, environment and the specific process function that makes this product necessary.

Can control and automation be customized?

Where the source supports PLC, VFD, positioning, WMS/MES/DCS or remote functions, the final scope should be defined from the buyer's interface and acceptance requirements.

How should source-reported performance numbers be treated?

They describe the source product configuration. Any value that matters contractually for a new project should be written into the technical agreement and acceptance plan.

Related General Overhead Cranes

Request A QE Double-Trolley Hook Crane Quote

Send your lifting load, span, lifting height, runway length, workshop or yard drawing, operating cycle, load geometry and special attachment / control requirements. Henan Mine Crane engineers will review the process and prepare a project-specific crane configuration and quotation.

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