QES Three-Trolley Hook Overhead Crane
For paper mills and other process plants that need three trolley positions on one bridge for complex equipment handling and maintenance.
Henan Mine Crane qes three-trolley hook crane showing the primary crane structure and lifting arrangement.
The QES three-trolley hook overhead crane follows the general QD-type bridge structure but installs three trolleys. The source states that two trolleys can be used at the same time or one trolley can operate alone, and identifies the paper industry as a common application.
For a paper-mill buyer, each trolley should be mapped to a maintenance task. Provide paper-machine component weights, pick points, required simultaneous lifts, working zones and DCS integration requirements rather than only a total crane tonnage.
Quick Specifications
| Product Model |
QES |
| Type-Test Product Name |
General Overhead Crane |
| Lifting Capacity |
Configured according to project requirements |
| Span |
Configured according to runway center distance |
| Lifting Height |
Configured according to workshop / process requirements |
| Working Duty |
Configured from source data and actual load spectrum |
| Lifting Attachment |
Configured according to the product and load |
| Control Method |
Configured according to project requirements |
Best For: For paper mills and other process plants that need three trolley positions on one bridge for complex equipment handling and maintenance.
Request A QES Three-Trolley Hook Crane Quote
Product Overview
Three trolley bridge crane, structurally similar to QD type according to source.
Can use two trolleys simultaneously or one trolley independently.
Widely used in paper industry according to 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 QES Three-Trolley Hook Crane?
Three Lifting Stations
One bridge supports several maintenance / production lifting positions.
Paper DCS Integration
Source specifically supports industrial Ethernet communication with paper-industry DCS.
Flexible Trolley Combination
Use one trolley or two together depending on the job.
PLC Sequence Control
Useful for repeatable maintenance / handling sequences.
Modular Serviceability
Quick-replace core modules support maintenance planning.
Product Images
Source image associated with the QES Three-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.
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Source image associated with the QES Three-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.
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Source image associated with the QES Three-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.
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Source image associated with the QES Three-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.
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Source image associated with the QES Three-Trolley Hook Crane, showing the multi-trolley crane or an industrial application.
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Main Crane Components
| Bridge Structure |
Engineered from capacity, span, duty, runway and product-specific process loads. |
| Hoisting / Trolley System |
Configured for the product's lifting mechanism and operating cycle. |
| Lifting Attachment |
Selected from the actual load geometry, material and process. |
| Travel System |
Bridge and trolley travel selected for required speed, duty and positioning. |
| Electrical & Control System |
Configured for operator control, safety functions and any source-supported automation / monitoring. |
Technical Parameters
| Model |
QES |
| Product Type |
QES Three-Trolley Hook Overhead Crane |
| Type-Test Product Name |
General Overhead Crane |
| Capacity |
Project-specific unless source-stated above |
| Span |
Project-specific unless source-stated above |
| Lifting Height |
Project-specific |
| Hoisting Speed |
Project-specific |
| Trolley / Crane Travel Speed |
Project-specific |
| Working Duty |
Project-specific unless source-stated above |
| Control Method |
Project-specific |
| Power Supply |
According to site electrical conditions |
| Operating Environment |
According to actual process conditions |
Source-Confirmed Features & Buyer-Defined Options
Source-confirmed product facts:
- Three trolley bridge crane, structurally similar to QD type according to source.
- Can use two trolleys simultaneously or one trolley independently.
- Widely used in paper industry according to source.
- PLC logic controls action sequences.
- Can interface with paper-industry DCS via industrial Ethernet; source states real-time data exchange and online parameter modification.
- Wheel forging/rolling composite process, drum gear couplings and modular design are source-listed.
- Core components can be replaced quickly; multiple control combinations are available.
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
| Paper Machine Maintenance |
Rolls, frames and process-component handling. |
| Paper Mills |
Multi-position lifting across a production bay. |
| Large Equipment Maintenance |
Different trolley combinations for different components. |
| Process Plants |
Multi-trolley handling with DCS integration. |
How to Select the Right QES Three-Trolley Hook Crane
1. Map Each Trolley to a Task
Provide load per trolley and required working zone.
2. Define Simultaneous Use
State which trolley pairs work together.
3. Provide Component Geometry
Long or offset loads determine pick-point spacing.
4. Define DCS Interface
List commands, status, alarms and parameter access.
5. Define Maintenance Access
Three trolleys increase service points; include access and isolation planning.
Three-Trolley Operating Logic
| Single Trolley |
Define each trolley's independent maximum load. |
| Two-Trolley Lift |
Define which pairs can operate together and required synchronization. |
| DCS Integration |
Define all data exchanged with the plant system. |
| Maintenance Strategy |
Standardize common parts across three trolley systems where possible. |
Safety & Control: What Buyers Should Confirm
• Rated capacity, overload protection and load-indication requirements
• Hoisting / travel limits, braking and emergency-stop requirements
• Attachment-specific safety such as magnet backup, grab interlocks, clamps or tandem synchronization where applicable
• Operator control method, visibility and safe access
• Anti-collision, anti-sway, positioning or automation requirements where required by the process
• Factory / site acceptance, load tests and project-specific functional tests
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?
| 1 |
Maximum total load |
| 2 |
Maximum load per trolley |
| 3 |
Trolley combinations used |
| 4 |
Component dimensions / pick points |
| 5 |
Span |
| 6 |
Lifting height |
| 7 |
Runway length |
| 8 |
Paper machine / plant layout |
| 9 |
DCS interface list |
| 10 |
Duty / cycles |
| 11 |
Control method |
| 12 |
Power supply / destination |
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.
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Request A QES Three-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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