Large Gooseneck Skeleton Semi-trailer

Large Gooseneck Skeleton Semi-trailers are specialized for transporting standard and oversize containers (20FT, 40FT, 45FT) in logistics hubs, ports, and long-haul freight. Their core advantages lie in the gooseneck structure (lowers platform height) and skeleton frame (lightweight, easy loading/unloading). Below are detailed general specifications.

1. Core Classification by Container Compatibility

2. Universal Basic Specifications

2.1 Frame Structure & Material

Main Frame Material: High-strength low-alloy steel (Q345B for 3-axle models; Q690 for 4-axle heavy-duty models) – ensures load-bearing capacity and fatigue resistance.

Main Longitudinal Beam:

3-axle models: Section size 350×180×10×14 mm (height×width×web thickness×flange thickness).

4-axle models: Section size 400×200×12×16 mm.

Crossbeams: Rectangular steel tubes (160×100×8 mm) – welded at 500–600 mm spacing for uniform load distribution; total crossbeam quantity: 12–16 (varies by length).

Surface Treatment: Shot blasting (rust removal, Sa2.5 grade) + electrostatic epoxy spray painting (2 layers, total thickness ≥80 μm) – corrosion-resistant for 8+ years in outdoor/port environments.

2.2 Axle Configuration & Load Capacity

Wheelbase:

3-axle models: 6.8+1.3 m (tandem rear axles, 1.3 m spacing between rear axles).

4-axle models: 6.0+1.3+1.3 m (triple rear axles).

3. Gooseneck Structure (Core Feature)

Gooseneck Angle: 15°–20° – optimizes weight distribution between the tractor and trailer, reducing traction pin stress.

Gooseneck Height:

Top height (at kingpin): 1.8–2.0 m (compatible with standard tractor fifth wheels).

Transition height (gooseneck to platform): 1.4–1.6 m – ensures smooth load transfer.

Traction Kingpin:

Type: 50# (SAE J844) for 3-axle models; 90# (SAE J844) for 4-axle heavy-duty models.

Material: 20CrMnTi alloy steel (quenched & tempered, surface hardness HRC 50–55) – wear-resistant for 500,000+ km.

Platform Height (Unloaded): 1.2–1.4 m – lowers total container height (≤4.5 m when loaded with 40FT HQ container) to meet road height limits (EU/China: ≤4.5 m).

4. Skeleton Frame & Container Compatibility

4.1 Container Locking System

Lock Type: ISO 1161 standard twist locks (adjustable for different container corner castings).

Lock Quantity:

40FT-focused Model: 8 locks (4 corners for 40FT; 4 additional for 2×20FT).

45FT-focused Model: 10 locks (4 for 45FT; 6 for mixed 40FT+20FT).

Multi-size Model: 12 locks (adjustable spacing via sliding lock bases).

Lock Operation: Manual twist (standard) or electric control (optional, for quick locking/unlocking).

4.2 Container Compatibility Details

Special Container Adaptation: Compatible with refrigerated containers (reefers) and tank containers (via reinforced locks; max additional weight ≤5 tons).

5. Running Gear & Safety System

5.1 Suspension & Braking

Suspension Type:

Standard: Reinforced leaf spring suspension (14–16 leaves per axle; 60Si2Mn spring steel) – durable for port rough pavements.

Optional: Air suspension (3–4 airbags per axle; 12 tons capacity per airbag) – reduces container vibration (ideal for fragile cargo in containers).

Braking System:

Main Brakes: Pneumatic drum brakes (drum diameter 420–450 mm) or disc brakes (optional for 4-axle models).

Safety Features: ABS (Anti-lock Braking System, ECE R13-compliant) + EBS (Electronic Braking System, optional) – shortens braking distance by 20% vs. standard trailers.

Parking Brake: Spring-loaded mechanical brake (acts on all rear axles) – secures the trailer when unhitched.

5.2 Tires & Wheels

Tire Specification: 295/80R22.5 radial tires (all-weather, load index 152/148 – max load 3,550 kg per tire).

Wheel Quantity: 6 tires (3-axle) / 8 tires (4-axle) + 1–2 spare tires (mounted on trailer side).

Wheel Rim: 22.5×9.00 inches (steel rims with anti-corrosion spray coating) – resistant to saltwater corrosion in port areas.

6. Auxiliary Features & Optional Configurations

Support Legs: 2 manual support legs (20-ton capacity each, standard) or electric support legs (30-ton capacity each, optional) – for stable parking when unhitched.

Monitoring Systems:

Optional GPS tracking (with container lock status monitoring) – remote fleet management.

Optional axle load sensors – real-time load display to prevent overloading.

Efficiency Upgrades:

Quick-release twist locks (reduces locking time by 50%).

Container guide rails (assists in aligning containers during loading).

Mud flaps (front/rear) – meets road safety regulations in EU/US/China.

7. Compliance & Certification

International Standards: ISO 1496-1 (container handling equipment), ISO 3874 (road safety for commercial vehicles).

Regional Standards:

China: GB 1589-2016 (vehicle dimensions/load limits), GB/T 13787 (semi-trailer general technical requirements).

EU: ECE R110 (axle safety), ECE R27 (reflective devices).

US: DOT FMVSS 121 (braking systems), DOT FMVSS 108 (lighting).

Notes

Specifications vary by manufacturer (e.g., CIMC, XCMG, Schmitz Cargobull) and custom needs:

For port use: Choose corrosion-resistant frames (galvanized steel) to resist saltwater.

For long-haul transport: Opt for air suspension and disc brakes to enhance stability.

Always confirm container weight and local road limits (e.g., EU axle load ≤11.5 tons; China ≤10 tons) before selecting a model. Refer to the manufacturer's technical datasheet for precise parameters.

The Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) is a high-efficiency, multi-container solution engineered for logistics hubs, ports, and long-haul freight-specializing in transporting standard and oversize containers (20FT GP/HQ, 40FT GP/HQ, 45FT HQ). It integrates a 18° gooseneck structure (lowering platform height to 1.2–1.4 m) and a lightweight skeleton frame, solving core pain points of container transport: road height compliance, fast loading/unloading, and multi-size container compatibility. With a 3-axle configuration, 35-metric-ton rated payload, and ISO 1161 twist locks (8 total, adaptable to 1×40FT or 2×20FT), it meets global standards (GB 1589-2016, ECE R13, ISO 1496-1) and is compatible with 400+ HP tractors (Sinotruk, Volvo, Daimler) via a 50# kingpin (SAE J844). This semi-trailer balances durability, flexibility, and efficiency-ideal for global logistics firms needing to streamline container transfer between ports, warehouses, and manufacturing plants.

Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) features a high-strength skeleton frame designed for heavy-load durability and lightweight efficiency. Its main longitudinal beams use Q345B high-strength steel (350×180×10×14 mm section size), with 14 crossbeams (160×100×8 mm rectangular tubes) spaced 550 mm apart-ensuring even weight distribution across the 35-metric-ton payload. The frame undergoes shot blasting (Sa2.5 grade rust removal) + double-layer electrostatic epoxy painting (80 μm thickness), resisting saltwater corrosion (critical for port use) and road debris for 8+ years. At 7.8 tons empty weight, it is 30% lighter than closed-container trailers, reducing tractor fuel consumption by 12% during long-haul transport.

Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) incorporates a precision 18° gooseneck structure that optimizes height compliance and driving stability. The gooseneck's top height (at the kingpin) is 1.9 m-compatible with standard tractor fifth wheels-while its transition to the platform lowers the unloaded platform height to 1.2–1.4 m. This design ensures a 40FT HQ container (2.896 m height) has a total transport height of ≤4.4 m, meeting EU/China road height limits (≤4.5 m) and avoiding overpass restrictions. The gooseneck's curved structure also disperses 30% of the load to the tractor, reducing stress on the trailer's rear axles and improving high-speed handling (stable at 80 km/h on highways).

Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) is equipped with an ISO 1161 twist lock system for flexible multi-container compatibility. It includes 8 adjustable twist locks: 4 positioned for 40FT containers (12.192 m length) and 4 additional locks (slidable via manual levers) for 2×20FT containers (6.058 m each). Each lock is made of forged 20CrMnTi steel (surface hardness HRC 52) and features a manual twist mechanism-securing containers in 10 seconds per lock and withstanding 20 tons of lateral force (preventing container shift during sharp turns). Optional electric twist locks (remote-controlled) are available, cutting locking/unlocking time by 50% for high-volume port operations.

Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) boasts a balanced 3-axle configuration and robust load-bearing capacity for reliable heavy transport. Its 3 axles are BPW-equivalent heavy-duty units (shaft diameter 90 mm, forged 20CrMnTi) with a 6.8+1.3 m wheelbase-distributing the 35-metric-ton rated payload to ≤11.7 tons per axle (complying with EU ≤11.5 tons/axle and China ≤10 tons/axle standards). The max static load reaches 42 tons, supporting occasional oversize loads (e.g., 45FT HQ containers with 38 tons cargo). A 320 mm ground clearance prevents the frame from scraping uneven port pavements or rural roads, while the axle's sealed bearings (IP67-rated) require maintenance only every 100,000 km.

Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) integrates a safe, low-maintenance running gear system for all-road adaptability. It uses reinforced leaf spring suspension (16 leaves per axle, 60Si2Mn steel)-absorbing vibrations from rough roads to protect fragile cargo inside containers (e.g., electronic components). The braking system includes 420 mm diameter pneumatic drum brakes (with automatic slack adjusters) and ECE R13-certified ABS-reducing emergency braking distance by 20% vs. non-ABS trailers and preventing wheel lock on wet ports. Optional air suspension (3 airbags per axle) is available for clients transporting refrigerated containers (reefers), minimizing vibration to protect the reefer's cooling unit.

Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) offers practical auxiliary features to simplify operation and maintenance. It includes 2 manual support legs (20-ton capacity each) with 360° rotating handles-enabling one person to stabilize the trailer in 5 minutes when unhitched from the tractor. A spare tire rack (mounted on the frame side) holds 1×295/80R22.5 tire (load index 152/148), while 4 mud flaps (front/rear axles) prevent road spray from soiling containers. Optional upgrades include a GPS tracking system (with real-time location and lock status monitoring) and axle load sensors-alerting fleet managers to overloading (≥38 tons) via a mobile app.

Large Gooseneck Skeleton Semi-trailer (Model: LGS-T350) meets global compliance standards and provides comprehensive after-sales support for cross-border use. It is certified to China's GB 1589-2016 (dimension/load limits), EU's ECE R13 (braking) and ECE R27 (reflective tapes), and ISO 1496-1 (container handling). For port clients, an optional galvanized frame (Zn coating ≥100 μm) is available to enhance saltwater corrosion resistance. The manufacturer offers a 2-year warranty for the frame and axles, plus free replacement of twist lock gaskets and brake pads within 6 months. Dedicated technical documentation (including load charts and maintenance schedules) is provided in English, Spanish, and Mandarin to support global clients.

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