MDE Double-Trolley L-Type Gantry Crane
For outdoor yards handling long loads that need L-leg clearance plus two trolley positions for separate or project-specific combined lifting tasks.
Henan Mine Crane mde double-trolley l-type gantry crane showing the primary gantry structure and lifting arrangement.
The MDE double-trolley L-type gantry crane is developed from the MDG L-type platform. The source confirms two trolleys, winch hoisting, L-shaped legs, rated capacity 5–50 t and span 18–35 m.
The L-leg geometry helps long or rotating loads pass the supporting legs. The buyer must additionally define how the two trolleys are used—independently, sequentially or together—because the source does not publish a universal synchronization tolerance.
Quick Specifications
| Product Model |
MDE |
| Type-Test Product Name |
General Gantry Crane |
| Lifting Capacity |
Source-stated where published; otherwise project-specific |
| Span |
Source-stated where published; otherwise project-specific |
| Lifting Height |
Project-specific unless source-stated |
| Runway / Travel Length |
Project-specific |
| Working Duty |
Source-stated where published; otherwise selected from actual duty |
| Lifting Attachment |
According to the product and load |
| Control Method |
Source-supported options + project requirements |
| Operating Environment |
According to actual site conditions |
Best For: For outdoor yards handling long loads that need L-leg clearance plus two trolley positions for separate or project-specific combined lifting tasks.
Request A MDE Double-Trolley L-Type Gantry Crane Quote
Product Overview
Double-trolley L-type gantry crane developed from the MDG platform.
Winch hoisting mechanism.
Source-rated capacity 5–50 t.
Any capacity, span, speed, synchronization accuracy, wind limit, temperature limit, throughput or other contractual value that is not explicitly published by the source should be engineered from the actual project and written into the technical agreement.
Why Choose MDE Double-Trolley L-Type Gantry Crane?
Two Trolleys + Open Legs
Combines multi-point lifting potential with better long-load leg clearance.
Published Capacity / Span
Source gives 5–50 t and 18–35 m.
Long-Load Passage
L-shaped legs suit beams, pipes and loads that need to rotate.
Flexible Control
Ground, remote and cabin modes are source-listed.
VFD Travel
Three-in-one variable-frequency drive supports controlled gantry motion.
Product Images
Official source image associated with the double-trolley gantry crane or industrial application.
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Official source image associated with the double-trolley gantry crane or industrial application.
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Main Crane Components
| Gantry Structure |
Main girder(s), legs and end structures selected from the exact product layout, load, span and site conditions. |
| Hoisting / Trolley System |
Configured around the product's source-described lifting mechanism and operating cycle. |
| Lifting Attachment |
Hook, grab, magnet, gantry hook, gate lifting device or construction attachment according to the product. |
| Gantry Travel System |
Moves the crane along the fixed ground rail or semi-gantry runway. |
| Electrical & Control System |
Configured from source-supported controls and project-specific safety / automation requirements. |
Technical Parameters
| Model |
MDE |
| Product Type |
MDE Double-Trolley L-Type Gantry Crane |
| Type-Test Product Name |
General Gantry Crane |
| Capacity |
Project-specific unless source-stated |
| Span |
Project-specific unless source-stated |
| Lifting Height |
Project-specific unless source-stated |
| Runway Length |
Project-specific |
| Hoisting Speed |
Project-specific |
| Trolley Travel Speed |
Project-specific |
| Gantry Travel Speed |
Project-specific |
| Working Duty |
Project-specific unless source-stated |
| Control Method |
Project-specific |
| Power Supply |
According to site electrical conditions |
| Site Environment |
According to wind, rain, dust, corrosion and temperature |
Source-Confirmed Features & Buyer-Defined Options
Source-confirmed product facts:
- Double-trolley L-type gantry crane developed from the MDG platform.
- Winch hoisting mechanism.
- Source-rated capacity 5–50 t.
- Source span 18–35 m.
- Ground, remote and cabin control are source-listed.
- Cable and conductor-line power supply are source-listed.
- L-shaped legs increase load passage space.
- Gantry travel uses a three-in-one variable-frequency drive.
Buyer-defined items:
- Maximum suspended load including attachment
- Span / lifting height / runway length
- Load geometry and lifting points
- Operating frequency and duty
- Outdoor / process environment
- Control, safety and automation scope
- Rail / foundation or building-runway interface
- Installation and commissioning scope
Application Scenarios
| Ports |
Long cargo handling. |
| Fabrication Yards |
Two-point handling of large structures. |
| Steel Storage |
Long product transfer. |
| Outdoor Assembly |
Large components requiring leg clearance. |
How to Select the Right MDE Double-Trolley L-Type Gantry Crane
1. Define Per-Trolley Loads
Provide independent maximum load for each trolley.
2. Define Combined Lift
If both trolleys lift the same load, provide lifting points and center of gravity.
3. Define Synchronization
State allowable hook-height difference if required.
4. Check Long-Load Clearance
Use load length / rotation envelope against L-shaped legs.
5. Confirm Source Range
5–50 t and 18–35 m are source-published ranges.
Two-Trolley + L-Leg Selection
| Source Capacity |
5–50 t. |
| Source Span |
18–35 m. |
| Per-Trolley Load |
Project-specific. |
| Synchronization |
Project-specific; no universal source tolerance. |
| Load Clearance |
Check full load rotation through both L-shaped legs. |
Safety & Control: What Buyers Should Confirm
• Rated capacity / overload protection and attachment weight
• Upper / lower hoisting limits and trolley / gantry travel limits
• Brake and emergency-stop requirements
• Rail-end stops, buffers, anti-collision and wind protection where applicable
• Attachment-specific safety: grab, magnet, metallurgical, gate, tipping or multi-trolley functions
• Operator visibility, remote-control or camera requirements
• Automation / linked-crane fallback and recovery procedures where applicable
• Factory and site load / functional acceptance tests
Installation & Maintenance
Before manufacture, confirm rail center distance, runway length, rail elevation, foundation or building-runway capacity, available lifting height, process clearances, power supply and erection access. Outdoor projects should include wind, rain, temperature, corrosion and anchoring conditions.
Maintenance should follow the final supplied crane manual and actual duty. In addition to hoisting, brakes, ropes, wheels, drives, rails, limits and electrical systems, inspect product-specific devices such as grabs, magnets, gantry hooks, gate equipment, tipping mechanisms, encoders, cameras or automation hardware.
What Information Do We Need for a Quote?
| 1 |
Total maximum load |
| 2 |
Maximum load per trolley |
| 3 |
Load dimensions / center of gravity |
| 4 |
Lifting-point spacing |
| 5 |
Synchronization requirement |
| 6 |
Span |
| 7 |
Lifting height |
| 8 |
Runway length |
| 9 |
Long-load turning envelope |
| 10 |
Duty |
| 11 |
Control method |
| 12 |
Wind / foundation / destination |
Frequently Asked Questions
How is final crane capacity selected?
Use the complete suspended load, including the load plus grab, magnet, gantry hook, lifting beam, rigging or any other below-the-hook equipment.
Can span and lifting height be customized?
Yes. Unless the source publishes a range, these are project-specific and should be selected from the rail layout and working envelope.
What site drawing should I send?
Send a plan and cross-section showing rails, foundations or building runway, loading positions, obstacles, travel length and available clearances.
Can control or automation be customized?
Where the source supports VFD, PLC, linked operation, cameras, access control or other functions, the final scope should be defined from the buyer's process and acceptance requirements.
How should source-reported performance numbers be used?
Treat them as source product data. If a value is contract-critical for a new project, define the test conditions and acceptance method in the technical agreement.
Related Gantry Crane Products
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MN Grab & Hook Dual-Purpose Gantry Crane
MEN Double-Trolley Electromagnetic & Hook Gantry Crane
MGBE Double-Trolley Semi-Gantry Crane
MC Electromagnetic Gantry Crane
Request A MDE Double-Trolley L-Type Gantry Crane Quote
Send your maximum load, span, lifting height, runway length, site drawing, operating cycle, load geometry, lifting attachment and special control / environment requirements. Henan Mine Crane engineers can then review the actual process and prepare a project-specific configuration and quotation.
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