L Leg Semi Gantry Crane for Outdoor Use | 3 Ton, 5 Ton, 10 Ton
Short Video Description
This video shows an L leg semi gantry crane for outdoor use, designed for cost-effective material handling in storage yards, fabrication areas, workshops and outdoor production sites. The crane is available in 3 ton, 5 ton and 10 ton capacities with customized span, lifting height, rail gauge and travelling distance.
The L leg semi gantry crane, also called an L type semi gantry crane or half gantry crane, uses a single ground-supported gantry side while the opposite side is supported by an elevated runway or suitable building structure. The L-shaped gantry leg provides a compact structure and can be adapted to different outdoor working areas.
A single girder L leg semi gantry crane can be equipped with an electric wire rope hoist or low-headroom hoist according to the required lifting height and working conditions. It is suitable when the customer needs a practical outdoor semi gantry crane without installing a full gantry structure on both sides.
For a cost-effective outdoor gantry crane, the crane span should match the actual hook coverage rather than unnecessarily covering the complete yard. Yuantai Crane considers the capacity, span, lifting height, rail gauge, duty class, wheel load, wind conditions, travelling distance and foundation during the engineering process.
L leg semi gantry crane for outdoor use for heavy material handling with capacity 1 to 20 ton
Main Technical Specifications
| Item | Technical Specification |
|---|---|
| Crane type | L Leg Semi Gantry Crane / L Type Semi Gantry Crane / Single Girder Semi Gantry Crane / Half Gantry Crane |
| Rated capacity | 3 ton / 5 ton / 10 ton, other capacities available |
| Girder design | Single girder welded beam or I-beam, selected according to capacity, span and duty class |
| Gantry leg design | L-shaped gantry leg for compact outdoor crane arrangement |
| Support arrangement | One side travels on ground rails while the opposite side is supported by an elevated runway or suitable structure |
| Span | 5 – 25 m, customized according to site layout |
| Lifting height | 4 – 15 m, customized according to required hook height |
| Hoisting system | Electric wire rope hoist / electric trolley hoist / European style low-headroom hoist |
| Hoisting speed | 3 – 12 m/min, single speed, two speed or VFD |
| Trolley speed | 20 – 30 m/min, VFD available |
| Crane travelling speed | 20 – 30 m/min, customized according to application |
| Duty class | ISO A3 – A5 / FEM 1Am – 2m, selected according to working frequency |
| Rail gauge | 3 – 15 m, customized according to ground rail layout |
| Travelling distance | 20 – 300 m+, customized according to outdoor site |
| Control | Pendant / Radio Remote / Operator Cabin |
| Power supply | 380V / 50Hz / 3Ph standard; 400V, 415V, 440V, 460V and 60Hz available |
| Outdoor protection | Weather-resistant electrical enclosure, protective coating, rain protection and wind protection according to site conditions |
| Wind protection | Rail clamps, anchoring devices and windproof systems available according to local wind load requirements |
| Safety devices | Overload limiter, lifting limit switch, travelling limit switch, emergency stop, buffers, travel limits and warning alarms |
| Working temperature | Typically -20°C to +40°C, customized for special environments |
| Applications | Outdoor storage yards, steel yards, fabrication workshops, construction sites, machinery yards, precast areas and general outdoor material handling |
| Yuantai Crane engineering experience | Yuantai engineers the L leg, main girder, end carriage, wheels, hoisting system, ground rails, wind protection and foundation loads as one complete outdoor semi gantry crane system. |
What Is an L Leg Semi Gantry Crane?
An L leg semi gantry crane is a semi gantry crane with an L-shaped supporting leg. One side of the crane travels on a ground rail while the opposite side is supported by an elevated runway or suitable structure.
It is also known as an L type semi gantry crane, half gantry crane or L leg gantry crane. The design can provide a compact solution where the site layout does not require a conventional full gantry crane.
For outdoor applications, the L leg structure can be customized according to the crane span, rail gauge, lifting height, wheel load, wind load and foundation conditions.
Why Choose an Outdoor L Leg Semi Gantry Crane?
The main advantage of an outdoor L leg semi gantry crane is that it can combine a ground travelling system with an existing elevated support structure. This can reduce the need for a complete independent gantry structure.
For yards and outdoor workshops, the crane can be designed around the actual material handling zone, truck access, storage area and production flow.
This makes the 3 ton, 5 ton and 10 ton L leg semi gantry crane a practical choice for customers looking for an economical outdoor lifting solution without unnecessarily increasing the crane span.
L Leg Semi Gantry Crane vs Full Gantry Crane
| Item | L Leg Semi Gantry Crane | Full Gantry Crane |
|---|---|---|
| Ground travelling sides | One ground-supported travelling side | Two ground-supported travelling sides |
| Building support | Can use an existing elevated runway or structure | Normally operates as an independent structure |
| Structure | Compact L-shaped semi gantry structure | A-frame or portal gantry structure |
| Outdoor application | Suitable for defined outdoor lifting zones | Suitable when independent full-area coverage is required |
| Cost optimization | Potentially economical when suitable existing support is available | More independent but may require additional structural steel and foundation |
How to Make an Outdoor Semi Gantry Crane Cost-effective
A cost-effective crane should not simply use smaller components. The better approach is to match the crane design to the actual lifting task.
Yuantai engineers review the lifting capacity, span, lifting height, duty class, hook coverage, wheel load, rail system, wind load and foundation before selecting the main crane structure.
For an L leg semi gantry crane, optimizing the crane span and working area can help avoid unnecessary structural capacity while maintaining the required lifting performance.
FAQ: L Leg Semi Gantry Crane for Outdoor Use
Common questions about L leg semi gantry cranes, outdoor applications, 3 ton, 5 ton and 10 ton capacities, and cost-effective crane design.
1. What is an L leg semi gantry crane?
An L leg semi gantry crane is a semi gantry crane using an L-shaped supporting leg. One side travels on a ground rail, while the opposite side is supported by an elevated runway or suitable building structure.
It is suitable for outdoor yards, workshops, fabrication areas and production sites where a full independent gantry crane is not necessary.
2. What capacities are available for an L leg semi gantry crane?
Yuantai Crane can design 3 ton, 5 ton and 10 ton L leg semi gantry cranes, as well as other capacities according to the lifting application.
The final crane structure depends on the capacity, span, lifting height, duty class, wheel load and working environment.
3. Is an L leg semi gantry crane suitable for outdoor use?
Yes. An outdoor L leg semi gantry crane can be designed for yards, steel storage areas, fabrication plants, construction sites and other outdoor material handling applications.
Outdoor design should consider wind load, rain protection, electrical enclosure, protective coating, rail anchoring and foundation conditions.
4. Is the L leg semi gantry crane more economical than a full gantry crane?
It can be more economical when a suitable elevated support or runway is already available. The semi gantry configuration can reduce the amount of independent gantry structure required on one side.
However, the actual project cost depends on the crane span, building structure, foundation, rail system, lifting height and duty class.
5. What information is needed for an outdoor L leg semi gantry crane quotation?
Provide the lifting capacity, span, lifting height, rail gauge, travelling distance, working frequency, site layout, existing support structure and outdoor working conditions.
For outdoor cranes, information about local wind conditions, rail foundation and power supply is also important for the engineering design.
6. Can the 3 ton, 5 ton and 10 ton L leg cranes be customized?
Yes. Yuantai Crane can customize the span, lifting height, rail gauge, travelling distance, hoist, control system, duty class and outdoor protection.
The crane can also be designed around the customer's actual hook coverage and material handling area to avoid unnecessary crane capacity or span.
7. What experience does Yuantai Crane have with L leg semi gantry cranes?
Yuantai Crane has engineering and manufacturing experience with semi gantry cranes, single girder gantry cranes, outdoor gantry cranes and customized material handling systems.
For L leg applications, Yuantai engineers check the main girder, L-shaped leg, end carriage, wheels, hoist, ground rails, wind protection and foundation loads as one complete system.
Need a Cost-effective L Leg Semi Gantry Crane?
Send us your 3 ton, 5 ton or 10 ton lifting requirement, span, lifting height, rail gauge, travelling distance, working frequency, site layout and outdoor working conditions.
Yuantai Crane can engineer a cost-effective L leg semi gantry crane for outdoor yards, workshops and industrial material handling applications, with the crane structure and rail system designed around your actual lifting requirements.
Related Videos
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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.
Yuantai Cranes
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- Main Specifications - Capacity: 0.5–550 tons | Span: up to 40m | Speed: 0.8–12 m/min | Duty: A3–A7 | Power: 380–690V, 50/60Hz | Control: pendant/remote/cabin
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- Crane type:_____ . (e.g., overhead crane, gantry crane, jib crane)
- Max weight to lift:_____ tons. (e.g., 2t, 5t, 10t, 20t, 50t)
- Lifting height:_____ m. (How high does the hook need to reach?
- Workshop width (span):_____ m . (Distance between the two crane rails)
- Travel distance:_____ m . (How long does the crane need to move along the runway?)
- Control type:_____. (Pendant / remote / cabin Control)
- Power supply:_____. (Local voltage & frequency – e.g., 380V, 50Hz, 3-phase)
- What will it be used for?_____ (e.g., steel fabrication, concrete products, mold handling, general manufacturing, etc.)
- Any special requirements?_____ (e.g., extreme temperature, dusty or explosive environment, special paint color, etc.)
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