Skeleton Rear Tipping Semi-Trailer
General Specifications for Skeleton Rear Tipping Semi-Trailer
Skeleton Rear Tipping Semi-Trailers are specialized for transporting bulk materials (sand, gravel, grain, construction waste) with core advantages: lightweight skeleton structure (reduces dead weight) and hydraulic rear-tipping function (enables fast, automatic unloading). Below are detailed general specifications, categorized by load capacity and application scenarios.
1. Core Classification by Load Capacity & Material Compatibility
| Trailer Type | Applicable Bulk Materials | Rated Payload | Key Design Focus |
|---|---|---|---|
| Light-Medium Duty Model | Grain, feed, lightweight sand/gravel, bagged cement | 15–30 tons | Lightweight frame, fast tipping (≤20s), cost-effective |
| Heavy-Duty Model | Ore, construction waste, heavy aggregates | 30–50 tons | High-strength frame, reinforced hydraulic system, wear-resistant parts |
| With Hydraulic Tailgate Model | Small-batch bulk goods (crushed bricks, small gravel) | 15–25 tons | Foldable hydraulic tailgate (controls discharge volume), anti-spill design |
2. Universal Basic Specifications
2.1 Frame Structure & Material
| Component | Light-Medium Duty Model | Heavy-Duty Model |
|---|---|---|
| Main Frame Material | Q345B high-strength carbon steel | Q690 ultra-high-strength steel |
| Main Longitudinal Beam | Section size: 300×150×8×12 mm (H×W×Web Thickness×Flange Thickness) | Section size: 350×180×10×14 mm |
| Crossbeams | 12–14 pcs; 150×100×6 mm rectangular steel tubes; spacing: 600 mm | 16–18 pcs; 180×120×8 mm rectangular steel tubes; spacing: 500 mm |
| Surface Treatment | Shot blasting (rust removal, Sa2.5 grade) + electrostatic epoxy painting (2 layers, total thickness ≥80 μm) | Shot blasting + epoxy painting (≥100 μm) + optional galvanized coating (Zn ≥100 μm, for coastal/mine use) |
| Skeleton Guardrail | Height: 300 mm; material: 40×40×3 mm angle steel; detachable (for loading large bulk goods) | Height: 400 mm; material: 50×50×4 mm angle steel; welded + bolted (anti-deformation) |
2.2 Axle Configuration & Load-Bearing
| Parameter | Light-Medium Duty Model | Heavy-Duty Model |
|---|---|---|
| Axle Quantity | 2–3 axles (tandem rear axles for 3-axle models) | 3–4 axles (triple rear axles for 4-axle models) |
| Axle Type | Standard commercial axles (e.g., BPW equivalent); shaft diameter: 80–90 mm (forged 20CrMnTi) | Heavy-duty axles (e.g., SAF-Holland HD series); shaft diameter: 90–100 mm |
| Wheelbase | 5.8+1.3 m (2-axle: 5.8 m; 3-axle: 5.8+1.3 m) | 6.5+1.3+1.3 m (3-axle: 6.5+1.3 m; 4-axle: 6.5+1.3+1.3 m) |
| Tire Specification | 295/80R22.5 radial tires (load index 152/148; max load: 3,550 kg/tire); 4–6 tires + 1 spare | 11R22.5 heavy-duty radial tires (load index 156/152; max load: 4,100 kg/tire); 6–8 tires + 2 spares |
3. Core Hydraulic Tipping System
The hydraulic system is the key to rear tipping, with specifications tailored to load capacity:
| Parameter | Light-Medium Duty Model | Heavy-Duty Model |
|---|---|---|
| Power Source | Tractor PTO (Power Take-Off; 540/1000 rpm) or 12V electric hydraulic pump (optional for small tractors) | Tractor PTO (1000 rpm) + auxiliary hydraulic tank (100–150 L) |
| Lifting Time | 15–20 seconds (from horizontal to max angle) | 20–30 seconds (slower for stability with heavy loads) |
| Max Tipping Angle | 38°–42° (ensures 95%+ material discharge) | 35°–40° (lower angle to prevent overtipping with heavy aggregates) |
| Hydraulic Cylinder | 1–2 pcs; diameter: 125–140 mm; stroke: 1,800–2,200 mm | 2–3 pcs; diameter: 140–160 mm; stroke: 2,200–2,500 mm; double-acting (for smooth lifting/lowering) |
| Safety Devices | - Over-tipping limit valve (cuts power at max angle)- Emergency lowering valve (manual operation if power fails)- Pressure relief valve (prevents system overload) | Same as above + tipping angle sensor (displays real-time angle on tractor dashboard) |
4. Safety & Operational Configurations
4.1 Braking System
Main Brakes: Pneumatic drum brakes (drum diameter: 420–450 mm) – standard for all models; optional disc brakes (for heavy-duty models, better heat dissipation for long downhill hauls).
Safety Features: ABS (Anti-lock Braking System, compliant with ECE R13) + EBS (Electronic Braking System, optional for heavy-duty models) – shortens braking distance by 20% vs. non-ABS trailers.
Parking Brake: Spring-loaded mechanical brake (acts on all rear axles) – secures the trailer when parked or unloading on slopes (≤15°).
4.2 Operational Aids
Discharge Guides: Optional rubber skirts (mounted on skeleton sides) – prevent material spillage during transport (critical for grain or small gravel).
Wear-Resistant Liners: Optional 6–8 mm thick manganese steel (65Mn) liners (attached to frame contact areas) – reduce wear from sharp aggregates (e.g., ore, crushed stone).
Hydraulic Tailgate (for Specific Model): Foldable, 1–2 ton load capacity; controlled via separate hydraulic valve – adjusts discharge volume to avoid overloading the receiving area (e.g., construction site hoppers).
5. Compliance & Certification
To ensure global market access, the trailer meets the following standards:
International Standards: ISO 3874 (road safety for commercial vehicles), ISO 1496-1 (general cargo equipment).
Regional Standards:
China: GB 1589-2016 (vehicle dimensions/load limits), GB 7258 (safety requirements for power-driven vehicles).
EU: ECE R110 (axle safety), ECE R27 (reflective devices for night visibility).
US: DOT FMVSS 121 (braking systems), DOT FMVSS 108 (lighting and signaling devices).
Material Certification: Steel materials (Q345B/Q690) with mill test reports; hydraulic cylinders with pressure test certificates (≥1.5× working pressure).
6. Optional Upgrades
Monitoring Systems: GPS tracking + real-time tipping status monitoring (alerts fleet managers if tipping is incomplete or overloaded).
Cold-Weather Adaptations: Low-temperature hydraulic oil (-30°C viscosity) + heater for hydraulic tank (prevents freezing in cold regions like Northeast China, Canada).
High-Capacity Tanks: Larger hydraulic tanks (150–200 L) for heavy-duty models – reduce oil temperature rise during frequent tipping (e.g., mine sites with 100+ daily discharges).
Notes
Material Density Impact: For high-density materials (e.g., ore, density 3.0 t/m³), select heavy-duty models with reinforced frames and larger-diameter hydraulic cylinders to avoid system overload.
Manufacturer Variations: Specifications may differ by brand (e.g., CIMC, XCMG, Foton) – confirm details like axle brand, hydraulic cylinder type, and frame thickness with the supplier.
Maintenance: Hydraulic oil should be replaced every 2,000 working hours; axle bearings require lubrication every 50,000 km to ensure long service life.
Product Brief And Product Content Introduction
The Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) is a high-efficiency bulk material transport solution engineered for hauling sand, gravel, grain, construction waste, and heavy aggregates-tailored for 建材 factories (building material plants), grain depots, mines, and infrastructure job sites. It integrates two core advantages: a lightweight skeleton frame (30% lighter than closed tipping trailers) to maximize payload ratio, and a hydraulic rear-tipping system (38° max angle, 20-second lifting time) for fast, labor-free unloading. With a 3-axle configuration, 40-metric-ton rated payload, and compatibility with 400+ HP tractors (Sinotruk, Volvo, Daimler) via a 90# kingpin (SAE J844), it meets global standards (GB 1589-2016, ECE R13, ISO 3874) and balances durability, operational efficiency, and on-site adaptability. This semi-trailer eliminates manual unloading delays and reduces fuel consumption-ideal for logistics firms and bulk material handlers needing frequent, reliable transport and discharge cycles.
Product Content Introduction
Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) features a high-strength, lightweight skeleton frame designed for optimal payload and corrosion resistance. Its main longitudinal beams are constructed from Q690 ultra-high-strength steel (350×180×10×14 mm section size), with 16 crossbeams (180×120×8 mm rectangular tubes) welded at 500-mm intervals-ensuring even weight distribution across the 40-metric-ton payload while resisting bending under heavy loads. The frame undergoes shot blasting (Sa2.5-grade rust removal) + double-layer electrostatic epoxy painting (100 μm thickness), protecting against construction-site mud, rain, and mine dust for 8+ years. At 7.5 tons empty weight, it is 25% lighter than traditional closed tipping trailers, allowing a 5-ton higher effective payload per trip and cutting tractor fuel consumption by 10%.
Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) is equipped with a high-performance hydraulic rear-tipping system for fast, safe unloading. Powered by a tractor PTO (1000 rpm) or an optional 15 HP diesel hydraulic pump (for off-grid mines), the system drives two double-acting hydraulic cylinders (diameter 150 mm, stroke 2200 mm)-lifting the frame from horizontal to 38° max tipping angle in just 20 seconds. This angle ensures 98%+ material discharge (no residual grain or sand), while a pressure relief valve prevents system overload and an over-tipping limit valve cuts power at max angle to avoid instability. An emergency manual lowering valve enables safe 卸料 even if the PTO fails, critical for remote mine sites with no immediate technical support.
Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) boasts a robust 3-axle configuration for balanced load-bearing and rough-terrain passability. The axles are BPW heavy-duty units (shaft diameter 95 mm, forged 20CrMnTi alloy steel) with a 6.5+1.3 m wheelbase-distributing the 40-metric-ton payload to ≤13.3 tons per axle (complying with EU ≤11.5 tons/axle and China ≤10 tons/axle standards for bulk transport). It uses 11R22.5 heavy-duty radial tires (load index 156/152, max load 4100 kg/tire) with deep treads (18 mm) that enhance traction on unpaved mine roads or muddy construction sites. The 320-mm ground clearance avoids scraping uneven surfaces, while sealed axle bearings (IP67-rated) require maintenance only every 100,000 km.
Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) prioritizes safety with advanced braking and stability features for bulk transport. It includes 450-mm diameter pneumatic drum brakes (with automatic slack adjusters) paired with ECE R13-certified ABS and optional EBS-reducing emergency braking distance by 25% vs. non-ABS trailers and preventing wheel lock on wet or dusty roads. A spring-loaded mechanical parking brake (acting on all 3 axles) secures the trailer and 40-ton cargo firmly when parked on slopes (≤15°), while detachable skeleton guardrails (400 mm height, 50×50×4 mm angle steel) prevent material spillage during transport. LED warning lights (mounted on guardrail corners) and ECE R27-compliant reflective tapes enhance visibility during early-morning or night-time 卸料.
Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) offers flexible adaptability to different bulk materials via optional upgrades. For sharp aggregates (e.g., ore, crushed stone), 8-mm thick 65Mn manganese steel liners can be attached to the frame's contact surfaces-reducing wear by 60% and extending frame life. For grain or feed transport, rubber skirts (mounted along guardrails) prevent small particles from spilling through skeleton gaps. A hydraulic folding tailgate (1.5-ton load capacity) is available for small-batch discharge (e.g., filling construction-site hoppers)-allowing operators to control 卸料 volume via a 10-meter wired remote, avoiding overloading the receiving equipment.
Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) 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 7258 (braking safety), EU ECE R13 (braking) and ECE R27 (reflective devices), and US DOT FMVSS 121 (braking systems). The hydraulic system has passed 10,000-cycle durability testing (lifting/lowering under full load), while the frame has undergone static load testing (48 tons for 4 hours) with no permanent deformation-test reports are provided to simplify customs clearance for export clients. For coastal grain depots, an optional galvanized frame (Zn coating ≥120 μm) resists saltwater corrosion.
Skeleton Rear Tipping Semi-Trailer (Model: SRT-400) provides comprehensive after-sales support and customization to meet client-specific needs. Optional configurations include: low-temperature hydraulic oil (-30°C viscosity) for cold regions (e.g., Northern China, Canada), a GPS tracking system (with real-time location and tipping status monitoring), and extra spare tire racks (for remote mines). The manufacturer offers a 2-year warranty for the frame and axles, plus free replacement of hydraulic seals and brake pads within 6 months. On-site training is provided for operators to master tipping control and maintenance, while 24/7 technical support addresses issues during high-frequency discharge cycles (e.g., 50+ daily trips in construction peak seasons).
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