- Double-Girder Structure – Higher Rigidity for Heavy Loads
- Multi-Point Lifting – Ideal for Long & Oversized Loads
- Up to 100T – Built for Demanding Industrial Handling
The DTLS Series is an electric double-girder rubber-tyred gantry crane built for heavy-duty industrial handling where standard single-girder capacity is no longer enough. Its double-box-girder structure provides the rigidity required for handling heavy precast elements, structural steel, large machinery, and other high-capacity loads. The electric drive system provides controlled lifting and travel, while rubber-tyred mobility allows operation without permanent rail infrastructure.
DTLS RTG Crane Technical Specifications
DTLS specifications are configured according to load capacity, lifting arrangement, working dimensions, duty cycle, travel requirements, and site conditions. The following are typical reference ranges; final specifications are project-specific.
| Parameter | Typical Configuration |
|---|---|
| Lifting Capacity | 5-100 t |
| Span | 5-20 m |
| Lifting Height | 5-15 m |
| Working Class | A3-A6 |
| Steering | Straight travel, 90° crab steering, diagonal steering, in-situ rotation |
| Power Supply | Diesel generator, cable reel, or battery |
| Control | Pendant, remote, or cabin control |
| Lifting Accessories | Hook, spreader beam, lifting frame, or customized |
| Operating Environment | Indoor or outdoor industrial applications |
Key Configuration Factors
- Capacity: Selected according to maximum load weight and load spectrum.
- Span & Height: Determined by the working area, load dimensions, and required clearance.
- Lifting Arrangement: Selected according to the number and location of lifting points.
- Duty Class: Based on lifting frequency, operating hours, and load spectrum.
- Steering: Configured according to travel routes, turning requirements, and available space.
- Power Supply: Diesel generator, cable reel, or battery selected according to operating location and mobility requirements.
Final DTLS rubber tyred gantry crane specifications are determined from the actual load, lifting points, working dimensions, duty cycle, travel route, ground conditions, and power requirements.
DTLS: Engineered for Heavy, Long and Complex Lifting
The DTLS Series rubber tyred gantry crane is designed for industrial handling applications where load weight, dimensions, lifting points, and handling frequency place greater demands on the crane structure and hoisting system. DTLS is particularly suited to handling requirements involving:
Higher Lifting CapacitiesHeavy loads requiring greater structural and hoisting capacity, including large precast components, steel assemblies, and industrial equipment.
Large Spans and Lifting HeightsWide working areas or higher hook heights requiring sufficient structural rigidity during lifting and travel.
Multiple Lifting PointsLong or flexible loads requiring two or more lifting points for balanced and controlled lifting.
Long or Asymmetric LoadsBeams, structural assemblies, machinery frames, and other loads where length or uneven weight distribution affects lifting stability.
Frequent Heavy-Load CyclesRepeated material transfer between production, storage, assembly, and loading areas.
Mobile High-Capacity HandlingHeavy-load lifting across multiple working areas without restricting the crane to a permanent rail route.
For long, heavy, or asymmetrical loads, DTLS can be configured with multiple lifting points according to the load geometry and handling requirements.
DTLS Multi-Point Lifting Configurations
Handling long, heavy, or asymmetrical industrial loads can require multiple lifting points to maintain load balance and controlled movement. The DTLS Series uses a high-rigidity double-girder structure to accommodate different multi-point lifting arrangements based on load weight, dimensions, center of gravity, and lifting-point layout.
Dual-Point Lifting with Twin Hoists
Two independent wire rope hoists provide two independently controlled lifting points for loads with defined lifting positions. The hoists can operate independently or in coordination, making this configuration suitable for long precast beams, structural steel assemblies, heavy machinery, and other large industrial loads.
Four-Point Lifting with Four Independent Hoists
Four independent wire rope hoists provide four lifting points for long, heavy, or flexible loads that require support at multiple positions. Independent or coordinated hoist control helps distribute the load and maintain stability during lifting and transfer. This configuration is suitable for long precast components, large structural assemblies, selected wind-energy components, and other loads where two-point lifting is insufficient.
Integrated Lifting Beams and Spreader Attachments
Custom lifting beams, spreaders, or specialized lifting frames can be integrated below the hoists to match specific load geometries, lifting positions, and handling requirements. These customized attachments can provide additional load distribution and positioning flexibility for asymmetrical fabrications, heavy molds, large components, and repetitive production handling.
How DTLS Delivers Controlled Multi-Point Lifting
The DTLS Series is designed for controlled multi-point lifting of heavy, long, and asymmetrical loads. It combines a double-box-girder structure, electric drives, VFD control, and multi-hoist coordination. These systems support stable lifting, efficient movement, precise positioning, and flexible load handling.
Stable Support for Heavy and Long Loads
Multiple lifting points can create uneven forces across the crane structure, especially when handling heavy or long loads. The DTLS uses double box girders to provide a rigid structural platform.
- Load Distribution: The double-girder structure distributes lifting forces across the main structure, supporting stable handling of heavy loads.
- Structural Rigidity: The box-girder design resists bending and torsional deformation during lifting and travel, supporting reliable operation with heavy and long loads.
- Multiple Hoist Support: The double girders provide the structural layout required for multiple hoists based on the load’s lifting points, supporting customized lifting arrangements.
Reliable Movement During Repeated Operations
Multi-point lifting involves repeated hoisting, trolley travel, gantry travel, acceleration, and positioning. The DTLS uses electric drives for these movements.
- Independent Drive Control: Hoisting and travel functions can be controlled independently, allowing operators to manage each movement according to the task.
- Three-in-One Geared Motors: Integrated motor, reducer, and drive units provide a compact transmission system, simplifying the drive arrangement.
- Consistent Torque Delivery: Controlled torque during lifting, acceleration, and travel helps reduce abrupt mechanical loading and support repeatable operation.
Shorter Handling Cycles with Precise Positioning
Multi-point lifting may require different speeds during travel and final placement. DTLS uses VFD control to adjust hoisting and travel performance.
- Variable Speed Control: Adjustable operating speeds help balance handling speed and positioning requirements, supporting shorter overall lifting cycles.
- Smooth Acceleration and Braking: Controlled speed changes reduce sudden loads on the crane, drive components, and lifted load, helping protect equipment and cargo.
- Low-Speed Positioning: Fine speed control during final placement helps improve alignment and reduce repositioning work.
Fewer Manual Adjustments for Complex Loads
Long and asymmetrical loads can place different demands on individual lifting points. The DTLS multi-hoist control system allows each hoist to be adjusted independently or operated together when synchronized lifting is required.
- Independent Hoist Adjustment: Individual hoists can be adjusted separately when lifting points require different positions, helping operators correct load imbalance without changing the entire lifting arrangement.
- Synchronized Hoisting: Multiple hoists can operate at coordinated speeds when lifting points need to rise together, maintaining the intended load geometry during lifting.
- Flexible Lifting Configurations: Hoist positions can be arranged according to the load’s dimensions, weight distribution, and lifting points, allowing one crane configuration to handle a wider range of complex loads.
Typical DTLS Applications and Engineered Solutions
Rather than using a fixed crane configuration for every application, the DTLS Series is engineered around the load characteristics, lifting-point arrangement, working space, and handling requirements of each operation. Hoisting configurations, structural dimensions, drive systems, and lifting accessories can be adapted to suit different industrial loads and yard conditions.
Precast Concrete Production & Storage
Long prestressed beams, wall panels, columns, and large precast modules often have predefined lifting points. Uneven lifting or unsuitable lifting-point arrangements can introduce excessive stress during transfer between production and storage areas.
Engineered Design Response:
- Load-Specific Hoisting Arrangement: Hoisting positions are configured according to the component’s length, weight distribution, center of gravity, and designated lifting points.
- Controlled Lifting and Transfer: VFD-controlled hoisting and travel provide smooth acceleration, braking, and low-speed positioning when transferring precast components between production and storage areas.
- Adapted Lifting Interface: Spreader beams or lifting frames can be incorporated when the component geometry or lifting-point arrangement requires a specialized connection.
Structural Steel Fabrication & Assembly
Steel trusses, long girders, welded frames, and fabricated assemblies vary significantly in length, weight distribution, and lifting-point location. Loads may also need precise positioning during assembly and loading.
Engineered Design Response:
- Adaptable Hoist Positioning: Hoist locations can be arranged according to the dimensions, lifting points, and weight distribution of different steel structures.
- Flexible Yard Mobility: Rubber-tyred travel allows the DTLS to move between fabrication, staging, assembly, and loading areas without relying on a fixed rail route.
- Controlled Assembly Positioning: Variable-speed hoisting and travel allow operators to make fine adjustments when aligning trusses, girders, frames, and other fabricated structures.
Heavy Equipment & Machinery Manufacturing
Machinery bases, equipment frames, generators, and large industrial assemblies often combine high weight with an off-center center of gravity and limited installation clearances.
Engineered Design Response:
- High-Rigidity Load Support: The double-girder box structure is designed to provide the stiffness required for heavy machinery and large working spans.
- Center-of-Gravity Consideration: The lifting arrangement is selected according to the equipment’s designated lifting locations and weight distribution to maintain a suitable load configuration during handling.
- Precision Positioning: Variable-speed hoisting and travel support controlled movement when placing equipment onto foundations, skids, or assembly stations.
- Clearance-Based Configuration: Span, lifting height, and crane dimensions can be adapted to existing factory layouts and installation clearances.
DTLS Rubber Tyred Gantry Crane Project Cases
Compact Industrial HVAC Handling – United States
ChallengeNarrow yard aisles and restricted clearances required a compact crane for handling large industrial HVAC units.
DTLS Solution25 t capacity | 5.5 m span | 7.1 m lifting height, with a compact frame, optimized wheel track, four top-mounted hoists, and a custom spreader frame aligned with the HVAC lifting points. VFD-controlled electric travel provides smooth movement and positioning in confined areas.
ResultA compact, mobile lifting solution for efficient outdoor HVAC handling where capacity, maneuverability, and lifting stability are all critical.
Multi-Point Precast Yard Handling – Nicaragua
ChallengeLong and heavy precast elements, rebar cages, and concrete molds required controlled four-point lifting to maintain load balance during yard transfers.
DTLS Solution4 × 15 t hoists | 60 t total SWL, mounted on a rigid double-box-girder frame. Four heavy-duty electric chain hoists provide coordinated four-point lifting, while rubber-tyred travel enables flexible movement without fixed rails.
ResultA 60 t multi-point lifting solution for oversized precast components, combining coordinated hoisting with flexible trackless yard mobility.
Long Bus Body Handling – Russia
ChallengeBus bodies with varying lengths required adjustable lifting-point spacing and stable multi-point support during yard transfer.
DTLS Solution20 t capacity with a double-tier frame featuring two parallel longitudinal beams. Four hoists run along the lower beams, allowing lifting-point spacing to be adjusted to different bus body lengths, combined with rubber-tyred yard travel.
ResultA flexible four-point lifting solution for variable-length bus bodies, providing controlled load support and efficient movement between working areas.
Integrated Electrical Module Handling – Spain
ChallengeHeavy electrical modules and power shelters required precise lifting, positioning, and loading, with close control of load balance in a narrow outdoor working area.
DTLS Solution32 t capacity (16 t + 16 t) | 3.5 m span | 7 m lifting height, with two European-standard hoisting trolleys, dedicated spreader beams, and heavy-duty chain slings. Dual LED weight displays provide real-time load monitoring, while VFD micro-speed control supports precise positioning.
ResultA controlled lifting solution for high-value electrical modules, combining real-time load monitoring, multi-point lifting, and precise low-speed positioning in confined yard areas.
How to Choose Between DTL and DTLS Rubber Tyred Gantry Crane
DTL and DTLS RTG cranes are designed for different handling requirements. The right choice depends not only on lifting capacity, but also on load geometry, lifting points, span, duty cycle, and handling complexity.
| Selection Factor | DTL Electric Single Girder RTG | DTLS Electric Double Girder RTG |
|---|---|---|
| Typical Capacity | Light to medium loads, typically 5-25 t | Higher-capacity handling, typically 5-100 t |
| Main Structure | Single box girder | Double box girder |
| Hoisting Configuration | Single or dual hoists | Dual, four-point, or multi-hoist configurations |
| Load Type | Standard industrial loads | Heavy, long, oversized, or asymmetrical loads |
| Lifting Points | Single or two-point lifting | Two-point, four-point, or customized multi-point lifting |
| Structural Requirement | Standard structural requirements | Higher rigidity for demanding loads and larger spans |
| Handling Complexity | Standard lifting and transfer | Coordinated lifting and complex load positioning |
| Typical Applications | General industrial handling, precast, storage yards, workshops | Heavy precast, structural steel, heavy machinery, long components, industrial modules |
| Best Fit | When a lighter single-girder configuration meets the handling requirements | When load weight, geometry, lifting points, or handling conditions demand a double-girder configuration |
Simple Selection Rule
- DTL: A compact, cost-efficient rubber-tyred gantry crane for standard industrial handling, offering flexible configuration and lower structural requirements.
- DTLS: A higher-capacity, higher-rigidity solution for demanding loads, larger working dimensions, and complex multi-point lifting applications.
In short: Choose DTL RTG crane for efficient standard handling and DTLS when load size, structural demands, or lifting complexity require a more robust configuration.
DTLS Rubber Tyred Gantry Crane FAQs
What ground conditions are required for a rubber-tyred DTLS crane?
How is lifting synchronization achieved with multiple hoists?
Can DTLS rubber tyred gantry crane operate in both indoor and outdoor environments?
How are custom lifting frames and spreader beams integrated with DTLS?
What information is required for a DTLS engineering proposal?
A DTLS engineering proposal typically requires information about the load, load geometry, working area, handling cycle, travel conditions, power supply, and operating environment. Key project data includes:
- Load: Maximum weight and typical load range
- Load Geometry: Length, width, height, center of gravity, and lifting points
- Working Area: Required lifting height, travel distance, and operating area dimensions
- Handling Cycle: Lifting frequency, operating hours, and required duty class
- Travel Conditions: Yard layout, aisle width, turning requirements, and ground/surface conditions
- Power: Cable reel, battery, or diesel generator
- Environment: Indoor or outdoor operation, wind conditions, temperature, corrosion exposure, and other site-specific factors
This information allows the DTLS configuration, steering system, lifting system, power supply, and structural design to be matched to the actual operating conditions.
DTLS rubber tyred gantry crane can be customized to match your load, travel route, lifting requirements, site conditions, and operating environment. Share your project details with Aicrane engineering team to get a suitable DTLS configuration and solution for your application.
