5 to 80 Ton Double Girder RTG Crane | A Frame Rubber Tyred Gantry Crane
Short Video Description
This video shows a 5 ton to 80 ton double girder RTG crane with an A-frame rubber tyred gantry crane design for flexible outdoor material handling. The RTG crane is suitable for precast concrete yards, steel yards, construction sites, logistics yards, industrial plants and container handling areas.
The double girder RTG crane uses two main girders supported by A-frame gantry legs and rubber tyres instead of fixed ground rails. This allows the rubber tyred gantry crane to travel across prepared ground and move between different working areas when required.
For a 5–80 ton RTG crane, the main design parameters include lifting capacity, span, lifting height, wheel load, travelling speed, duty class, tyre configuration, power supply and working environment. Yuantai Crane reviews these parameters together before finalizing the crane structure and travelling system.
Main Technical Specifications
| Item | Technical Specification |
|---|---|
| Crane type | Double Girder RTG Crane / A-Frame Rubber Tyred Gantry Crane |
| Rated capacity | 5 – 80 ton, customized according to application |
| Girder design | Double welded box girder, engineered according to capacity, span and duty class |
| Gantry structure | A-frame rubber tyred gantry structure |
| Travelling system | Rubber tyres with hydraulic steering / electric travelling system according to RTG configuration |
| Span | 10 – 35 m+, customized according to working area |
| Lifting height | 6 – 20 m+, customized according to application |
| Hoisting system | Electric wire rope hoist / open winch trolley |
| Duty class | ISO A3 – A7 / FEM 1Am – 4m, selected according to working cycle |
| RTG travelling speed | 10 – 40 m/min, customized according to application |
| Trolley speed | 20 – 40 m/min, VFD available |
| Hoisting speed | 3 – 12 m/min, single speed, two speed or VFD |
| Steering | Straight travelling / multi-directional steering according to RTG design |
| Tyre configuration | Solid / pneumatic / industrial rubber tyres selected according to wheel load and ground conditions |
| Control | Pendant / Radio Remote / Operator Cabin |
| Power supply | 380V / 50Hz / 3Ph standard; 400V, 415V, 440V, 460V and 60Hz available |
| Power options | Cable reel / cable drum / generator / hybrid power system according to RTG configuration |
| Safety devices | Overload limiter, lifting and travelling limit switches, emergency stop, buffers, anti-collision system, warning alarms and travel protection |
| Outdoor protection | Weather-resistant electrical protection, protective coating and wind protection according to site conditions |
| Applications | Precast yards, steel yards, construction sites, logistics yards, industrial plants, warehouses and general outdoor material handling |
| Yuantai Crane engineering experience | Yuantai engineers the double girders, A-frame legs, hoisting system, rubber tyres, steering system, travelling mechanism and control system as one complete RTG crane. |
Double Girder RTG Crane for Flexible Outdoor Material Handling
A double girder RTG crane is a rubber tyred gantry crane designed for outdoor lifting where crane mobility is important. Unlike a rail-mounted gantry crane, the RTG crane uses rubber tyres and does not require a permanent crane travelling rail system.
The A-frame rubber tyred gantry crane can move between different working areas on suitable prepared ground. This makes it useful for precast concrete yards, steel storage areas, construction projects and industrial yards where the material handling layout may change.
For heavier RTG applications, the double girder structure provides the required rigidity for the main trolley and hoisting system. Yuantai Crane selects the girder dimensions, wheel arrangement, tyre capacity and travelling system according to the calculated loads.
Applications
A 5–80 ton rubber tyred gantry crane can be configured for different outdoor lifting applications. Smaller capacities can be used for general material handling, while higher-capacity RTG cranes are suitable for precast segments, concrete beams, steel products and heavy machinery.
Typical applications include precast concrete handling, steel yard material handling, construction site lifting, machinery assembly, outdoor storage and logistics operations.
The final RTG configuration depends on the required lifting capacity, working frequency, travelling route, ground bearing capacity and required positioning accuracy.
FAQ: 5 to 80 Ton Double Girder RTG Crane
Common questions about double girder RTG cranes, A-frame rubber tyred gantry cranes and mobile outdoor lifting applications.
1. What is a double girder RTG crane?
A double girder RTG crane is a rubber tyred gantry crane with two main girders and an A-frame supporting structure. It travels on rubber tyres rather than fixed ground rails.
It is suitable for outdoor lifting where the crane needs greater mobility and flexible access to different working areas.
2. What is an A-frame rubber tyred gantry crane?
An A-frame rubber tyred gantry crane is an RTG crane with sloping gantry legs forming an A-shaped structure. The legs support the main girders and transfer the lifting load to the rubber tyres.
Yuantai Crane designs the A-frame structure according to lifting capacity, span, wheel load, stability and ground conditions.
3. What is the difference between an RTG crane and a rail gantry crane?
The main difference is the travelling system. An RTG crane uses rubber tyres, while a conventional rail-mounted gantry crane travels along fixed ground rails.
The rubber tyred design provides greater mobility, while a rail gantry crane is normally preferred when the crane follows a fixed and defined travel path.
4. What capacity RTG crane is suitable for precast concrete handling?
The required RTG capacity depends on the maximum precast segment, beam or concrete component weight. A 5 ton RTG may suit lighter components, while heavier precast segments can require 20, 40, 50, 60 or 80 ton lifting capacity.
Yuantai Crane selects the rated capacity according to the maximum load, working frequency and required lifting configuration.
5. What ground conditions are required for a rubber tyred gantry crane?
An RTG crane requires a suitable prepared travelling surface capable of supporting the calculated wheel loads. Ground level, bearing capacity, slope and travelling route should be considered during the design stage.
Yuantai Crane checks the wheel load, tyre capacity, ground bearing conditions and travelling stability when configuring a rubber tyred gantry crane.
6. What information is needed for a 5 to 80 ton RTG crane quotation?
For a 5–80 ton RTG crane quotation, provide the lifting capacity, span, lifting height, travelling distance, working frequency, ground conditions, power supply and application.
A site layout showing the RTG travelling route and main lifting positions can help Yuantai engineers select the correct A-frame structure, wheel arrangement and power system.
7. What experience does Yuantai Crane have with RTG cranes?
Yuantai Crane has engineering and manufacturing experience with rubber tyred gantry cranes, double girder gantry cranes, A-frame gantry cranes and heavy-duty outdoor material handling systems.
For RTG projects, Yuantai engineers review the main girders, gantry legs, hoisting system, tyres, wheel loads, steering system, travelling mechanism, electrical controls and working environment as one complete crane system.
Need a 5 to 80 Ton Rubber Tyred Gantry Crane?
Send us your lifting capacity, span, lifting height, travelling distance, working frequency, ground conditions, power supply and site layout.
Yuantai Crane can engineer a 5–80 ton double girder RTG crane, A-frame rubber tyred gantry crane or customized mobile gantry crane for precast concrete, steel yards, construction sites and other outdoor material handling applications.
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Article by Bella ，who has been in the hoist and crane field since 2016. Bella provides overhead crane & gantry crane consultation services for clients who need a customized overhead travelling crane solution.Contact her to get free consultation.
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