Engineering Transport Semi-trailer

Engineering Transport Semi-trailers are specialized for hauling oversized, overweight, or irregularly shaped engineering equipment/components (e.g., excavators, wind turbine towers, bridge beams). Their design prioritizes low platform height, high load-bearing capacity, and adaptability to complex construction-site terrain. Below are detailed general specifications.

1. Core Classification by Equipment Compatibility

2. Universal Basic Specifications

2.1 Axle Configuration & Load Capacity

Wheelbase (varies by axle quantity):

3-axle Low-bed: 6.8+1.3 m (tandem rear axles)

8-axle Heavy-duty: 5.0+1.2+1.2+1.2 m (quadruple rear axle modules)

2.2 Frame Material & Structure

Main Frame Material:

Standard models (≤60 tons): Q690 ultra-high-strength steel (main beam section: 400×200×12×16 mm).

Heavy-duty models (>60 tons): Q960 high-strength steel (main beam section: 450×220×14×18 mm).

Surface Treatment:

Shot blasting (rust removal, Sa2.5 grade) + electrostatic epoxy spray painting (2 layers, total thickness ≥100 μm) – corrosion-resistant for 10+ years in construction-site environments.

Optional galvanized coating (for coastal/wind-farm use): Zn coating ≥120 μm (resists saltwater corrosion).

3. Type-Specific Detailed Specifications

3.1 Low-bed Engineering Semi-trailer

Platform Design:

Platform Height (Unloaded): 0.8–1.2 m (enables equipment to drive onto the platform via its own tracks/wheels).

Platform Material: 12–16 mm thick wear-resistant manganese steel (65Mn) with anti-slip diamond plate (prevents equipment sliding).

Platform Length: 10–16 m (fixed) or 12–20 m (telescopic optional).

Loading Assistance:

Optional ramps: 2 hydraulic folding ramps (length 3–4 m, load capacity 20 tons/each) – for equipment with low ground clearance.

3.2 Depressed-beam Engineering Semi-trailer

Depressed Frame Dimensions:

Depressed Depth: 0.5–1.0 m (avoids contact between protruding equipment/components and the frame).

Depressed Length: 8–15 m (matches the length of tower sections or crane booms).

Platform Height:

Non-depressed area: 1.4–1.6 m.

Depressed area: 0.9–1.1 m (reduces total transport height of tall components like wind towers).

3.3 Telescopic Engineering Semi-trailer

Telescopic Mechanism:

Telescopic Sections: 2–3 sections (hydraulic-driven); stroke per section: 5–8 m.

Total Length Range: 18 m (retracted) – 40 m (extended) (adapts to 30–40 m bridge beams).

Locking System: Hydraulic pins (4–6 pins per section) – secures telescopic sections under full load to prevent movement.

3.4 Heavy-duty Multi-axle Engineering Semi-trailer

Axle Module Design:

Module Type: 2-axle or 3-axle modules (detachable for on-site reconfiguration).

Steering Function: All axles support ±45° hydraulic synchronous steering – reduces turning radius by 40% for narrow construction roads.

Hydraulic Lifting:

Lifting Stroke: 50–300 mm (per axle module) – adjusts platform height to level uneven terrain or align with loading docks.

Working Pressure: 25–30 MPa (ensures sufficient force for lifting 150-ton loads).

4. Safety & Securing Systems

4.1 Braking System

Standard Configuration:

Main Brakes: Pneumatic disc brakes (disc diameter 450–500 mm) – superior heat dissipation for long downhill hauls on construction-site roads.

Safety Features: EBS (Electronic Braking System) + ABS (Anti-lock Braking System, compliant with ECE R13) + automatic slack adjusters.

Parking Brake: Spring-loaded mechanical brake (acts on all axles) – secures heavy equipment when parked on slopes (≤15°).

4.2 Equipment Securing Devices

Standard: 8–12 D-type cargo rings (50–100 tons load capacity each) – mounted on platform edges for fixing equipment with steel cables.

Optional:

Hydraulic clamps (for cylindrical components like wind towers) – 2–4 clamps (adjustable diameter: 1.5–5.0 m).

Anti-slip rubber pads (30 mm thick) – placed under equipment tracks/wheels to prevent shifting during transport.

5. Compliance & Certification

International Standards:

ISO 3874 (road safety for commercial vehicles), ISO 1161 (container locking compatibility – for modular components).

Regional Standards:

China: GB 1589-2016 (vehicle dimensions/load limits), GB/T 23336 (heavy-duty semi-trailer safety requirements).

EU: ADR (for oversized/overweight transport), ECE R110 (axle safety).

US: DOT FMVSS 121 (braking systems), FHWA (Federal Highway Administration) axle load limits.

6. Auxiliary Features & Optional Configurations

Operational Aids:

Hydraulic support legs (4–6 legs, 30-ton capacity each) – stabilizes the trailer during equipment loading/unloading.

Wireless remote control (100-meter range, IP67 waterproof) – controls telescoping, lifting, and steering (reduces on-site labor).

Monitoring Systems:

GPS tracking + load monitoring (displays real-time axle load, location, and hydraulic pressure) – alerts for overloading (≥110% rated payload).

Rearview cameras (with night vision) – enhances visibility when reversing with oversized equipment.

Notes

Specifications vary by manufacturer (e.g., CIMC Heavy Industry, XCMG, Goldhofer) and custom equipment requirements:

For wind-farm use: Opt for galvanized frames and corrosion-resistant hydraulic components (to withstand coastal/mountain conditions).

For mining equipment: Choose extra-thick platform steel (16–20 mm) and reinforced axles (to resist impact from rough mine roads).Always confirm the equipment's weight, dimensions, and local road regulations (e.g., EU axle load ≤11.5 tons; China ≤10 tons for special transport) before selecting a model. Refer to the manufacturer's technical datasheet for precise parameters.

Product Brief And Product Content Introduction

The Engineering Transport Semi-trailer (Model: ET-LB400) is a versatile low-bed solution engineered for safely hauling common construction equipment-including 5–30 ton excavators, loaders, road rollers, and small bulldozers-tailored for infrastructure projects, mining sites, and wind farm construction. It features a 3-axle configuration, 40-metric-ton rated payload, and an ultra-low platform (0.9–1.1 m unloaded height) that enables equipment to self-load via its own tracks/wheels, eliminating the need for heavy cranes. Constructed with Q690 ultra-high-strength steel and equipped with anti-slip manganese steel platform, hydraulic folding ramps, and ECE R13-certified braking systems, this semi-trailer meets global standards (GB 1589-2016, ISO 3874, EU ADR) and is compatible with 400+ HP engineering tractors (Sinotruk HOWO, Volvo FH16, Daimler Actros) via a 90# kingpin (SAE J844). It balances durability, operational efficiency, and on-site adaptability-ideal for logistics firms and construction companies needing reliable equipment transport across urban and rural job sites.

Product Content Introduction

Engineering Transport Semi-trailer (Model: ET-LB400) adopts a high-strength low-bed frame design to support heavy equipment while ensuring easy loading. Its main longitudinal beams are made of Q690 ultra-high-strength steel (400×200×12×16 mm section size), with 12 crossbeams (180×100×8 mm rectangular tubes) welded at 600 mm intervals-distributing 40-metric-ton loads evenly and resisting bending under pressure. The frame undergoes shot blasting (Sa2.5 grade rust removal) + double-layer electrostatic epoxy painting (100 μm thickness), protecting against corrosion from construction-site mud, rain, and mineral dust for 10+ years. The 14-meter fixed platform (optional 16-meter telescopic extension) provides ample space for 30-ton excavators (e.g., Caterpillar 320) or two 15-ton loaders.

Engineering Transport Semi-trailer (Model: ET-LB400) features an ultra-low platform and hydraulic ramps to simplify equipment self-loading. The unloaded platform height is 0.9–1.1 m-30% lower than standard flatbed trailers-allowing equipment with minimum ground clearance (≥150 mm) to drive onto the platform without external lifting tools. It includes two 3.5-meter hydraulic folding ramps (20-ton capacity each) that extend from the rear of the platform; the ramps are controlled via a 12V electric pump (with manual backup) and lock into place at a 15° angle for stable loading. The platform surface is covered with 12-mm thick 65Mn manganese steel with diamond anti-slip patterns-increasing friction by 50% to prevent equipment sliding during acceleration or downhill transport.

Engineering Transport Semi-trailer (Model: ET-LB400) is equipped with a robust 3-axle system for balanced load distribution and rough-terrain passability. The axles are BPW heavy-duty units (shaft diameter 95 mm, forged 20CrMnTi alloy steel) with a 6.8+1.3 m wheelbase-ensuring each axle bears ≤13.3 tons (complying with EU ≤11.5 tons/axle and China ≤10 tons/axle standards for special transport). The suspension uses reinforced leaf springs (16 leaves per axle, 60Si2Mn steel) that absorb vibrations from gravel construction roads, protecting equipment components (e.g., hydraulic hoses, control panels) from damage. The 320-mm ground clearance allows the trailer to traverse uneven job sites (e.g., unpaved mine roads with 100-mm potholes) without scraping the platform.

Engineering Transport Semi-trailer (Model: ET-LB400) prioritizes safety with advanced braking and stability systems. It uses 450-mm diameter pneumatic disc brakes (superior heat dissipation vs. drum brakes for long downhill hauls on mountain job sites) paired with EBS (Electronic Braking System) and ABS (ECE R13-certified)-reducing emergency braking distance by 25% vs. non-ABS trailers and preventing wheel lock on wet or dusty surfaces. A spring-loaded mechanical parking brake (acting on all 3 axles) secures the trailer and equipment firmly when parked on slopes (≤15°), while four mud flaps (front/rear axles) prevent road spray from obscuring visibility for following vehicles. LED warning lights (mounted on the platform edges) and ECE R27-compliant reflective tapes enhance visibility during early-morning or night-time transport.

Engineering Transport Semi-trailer (Model: ET-LB400) includes reliable equipment securing devices to prevent shifting during transit. It is fitted with 10 D-type cargo rings (50-ton tensile strength each) mounted along the platform edges-allowing operators to fasten equipment with steel cables or chains (compatible with standard excavator/tractor tie-down points). Optional anti-slip rubber pads (30 mm thick, 500×800 mm size) can be placed under equipment tracks/wheels to further reduce movement; these pads are oil-resistant and reusable, suitable for mining equipment with greasy undercarriages. For oversized equipment (e.g., 30-ton bulldozers), two adjustable steel stop blocks (height 300 mm) are included to limit forward/rearward sliding during sudden stops.

Engineering Transport Semi-trailer (Model: ET-LB400) meets global compliance standards to enable cross-border sales and project use. It adheres to China's GB 1589-2016 (vehicle dimensions/load limits) and GB/T 23336 (heavy-duty semi-trailer safety), EU ADR (for oversized equipment transport), and ISO 3874 (road safety for commercial vehicles). The frame and axles have passed static load testing (48 metric tons for 4 hours) and dynamic load testing (40 metric tons at 60 km/h for 1,000 km), with test reports available for client verification. For wind farm clients in coastal regions, an optional galvanized frame (Zn coating ≥120 μm) is offered to resist saltwater corrosion-extending service life by 30%.

Engineering Transport Semi-trailer (Model: ET-LB400) supports customization and provides comprehensive after-sales support to meet project-specific needs. Optional upgrades include: a 16-meter telescopic platform (extending via hydraulic cylinders) for 35-ton large excavators, a GPS tracking system (with real-time location and axle load monitoring), and low-temperature hydraulic oil (-30°C viscosity) for cold-region construction (e.g., Northern China, Canada). The manufacturer offers a 2-year warranty for the frame and axles, plus free replacement of wear parts (brake pads, ramp hinges) within 6 months. On-site maintenance training is provided for client teams, and technical support is available 24/7 to address issues during project deadlines.

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