HYDRAULIC MODULAR TRAILER – MODEL:SY-P660
(Compatible with GOLDHOFER THP/SL)

The Goldhofer THP/SL is one of the world’s most widely used hydraulic modular trailers. We a professional manufacturer of this type of modular trailer, which is fully compatible with original Goldhofer trailers and can be directly coupled and operated together seamlessly — especially for the classic THP/SL model.

In addition, we have strengthened the steel structure of the frame chassis for higher load capacity and durability. We also provide comprehensive services including improvement, modification, troubleshooting, renovation and upgrading for your existing Goldhofer trailers. This combination of precision steering and terrain adaptability makes it the preferred choice for demanding transport projects worldwide.

The Smart Alternative to the Original

Goldhofer THP/SL has long been recognized as the industry benchmark for heavy-duty modular transport — a system trusted by the world’s leading heavy-haulage contractors for transporting the heaviest and most oversized cargo across the most challenging routes. Our modular trailer is engineered to be fully compatible with the Goldhofer THP/SL system, delivering the same proven performance, safety, and reliability at a significantly more competitive price point.

Our modular trailer is manufactured to match the precise interface specifications of the Goldhofer THP/SL platform. This means our modules can be directly coupled — both longitudinally and transversely — with original Goldhofer THP/SL modules, giving fleet operators the freedom to mix and match equipment from both sources. Whether you are expanding an existing Goldhofer fleet or building a new transport system from the ground up, our modules integrate seamlessly into your operations.

We understand that in heavy-haulage operations, component quality is non-negotiable. That is why our modular trailers are built exclusively with internationally recognized premium components:

• Hydraulic Sealing — PARKER (USA)
• Multi-Way Valve — BONDIOLO & PAVESI (Italy)
• Hydraulic Hose — AEROQUIP (Germany)
• Quick Coupling — VOSWINKEL (Germany)
• Slew Bearing — ROTHE ERDE (Germany)
• Stop Valve — STAUFF (Germany)
• High-Strength Steel — Q690E structural grade

With an axle load capacity of up to 45 tonnes per axle line, hydraulic axle compensation for off-road stability, hydro-mechanical all-wheel force steering with a maximum steering angle of 55°, and a lightweight yet robust frame, our modular trailer is purpose-built for the most demanding heavy transport applications — from wind energy components and power plant equipment to bridge beams, ship sections, petrochemical modules, and mining machinery.

Our Goldhofer THP/SL compatible modular trailer is not a compromise — it is a strategic choice. For heavy-haulage

contractors who demand Goldhofer-level performance but need to optimize their equipment investment, our compatible system delivers the strength, flexibility, and reliability that complex transport projects demand — at a price that makes business sense.

Goldhofer-proven design. Premium components. Unbeatable value.

Item	Name	Parameters
1	Wheel base	1500mm
2	Wheel track	735/1800mm
3	Tires quantity	8pcs/axle line
4	Tire size	215/75R17.5
5	Rim size	6.00-17.5
6	Platform width	2990mm
7	Platform height	1175±300 mm
8	Material	Q690D
9	Tare weight	3800kg/axle line
10	Steering angle	55°

• 2 axis lines ,3 axis lines.4 axis lines,5 axis lines,6 axis lines and 8 axis lines optional
• Complete modular unit and split modular unit optional;
• Modular design can be coupled side-by-side or end-by-end;
• Hydraulic suspension with slewing bearing, excellent damping performance;
• Lifting compensation1175mm±300mm;
• The suspension can be adjusted adaptively according to different road surfaces;
• Hydraulic steering point or four point support, uniform load;
• Counter steering ,realize small turning radius;
• Draw bar trailer ,semi trailer and SPMT optional

transport projects worldwide.

Cargo Securing & Lifting Points

All modular trailers come with a full set of cargo securing and lashing accessories, inspected and CE certified by recognized authorities — fully compliant with international load restraint standards.

The integrated lashing rings serve a dual purpose:

Cargo Securing — High-strength anchor points for strapping and chaining loads during transit
Crane Lifting — Certified lifting points for safe and controlled crane handling during loading and unloading

Hydraulic Auto-Pin Coupling System

A key operational advantage is the hydraulically actuated automatic pin coupling system. Module connection pins are driven by hydraulic cylinders, enabling longitudinal coupling and rigid fixation between modules with a single hydraulic command — no auxiliary tools required.

This design significantly simplifies on-site assembly, reduces labor intensity, and accelerates project mobilization — delivering a more efficient and operator-friendly experience.

Production Process — Goldhofer-Type Modular Trailer

Precision welding of high-strength steel, CNC machining, full hydraulic suspension, multi-mode electronic control, and rigorous bench testing are the keys to Goldhofer type modular trailers being able to carry thousands of tons while maintaining accuracy and service life.

Every SHIYUN modular trailer undergoes a comprehensive testing protocol before leaving the factory. Each unit is subjected to a static load test at 125%–150% of its rated capacity, verifying structural integrity and load-bearing performance under extreme conditions.

In addition to static load testing, the following inspections are performed:

Axle Load Balancing — Ensures uniform weight distribution across all axle lines
Hydraulic Lifting Test — Validates full stroke operation and pressure stability of the suspension system
Steering Function Test — Confirms accurate response across all steering modes
Dynamic Running Test — Simulates real-world operating conditions to verify overall performance

A complete test report is issued prior to delivery, providing full traceability of all test data — giving customers confidence in safe and efficient operation from day one.

Specialized Accessories & Auxiliary Equipment

SHIYUN offers a comprehensive range of specialized accessories and auxiliary equipment, engineered for full compatibility with Goldhofer-type modular trailers. These components expand the versatility of your transport fleet, enabling efficient and safe handling of complex and oversized cargo:

4.1 Hydraulic Gooseneck

The hydraulic gooseneck module is engineered for seamless integration with SHIYUN’s Goldhofer modular trailer platforms, offering precise hydraulic height adjustment to accommodate varying fifth-wheel heights across different prime movers. The primary control valves governing all module functions are centrally mounted on the gooseneck assembly or the dedicated operation panel, providing operators with intuitive, single-point access to every hydraulic command. Through the control valves, hydraulic pressure is smoothly regulated and proportionally distributed between the tractor fifth wheel coupling and the modular trailer units, ensuring balanced load transfer, stable coupling engagement, and consistent platform height control throughout the transport operation.

In addition to the Nicolas Power Hydraulic Gooseneck, we also provide a cost-efficient alternative coupling solution based on a drop deck configuration with a detachable gooseneck. This configuration enables the gooseneck section to be separated from the trailer deck, allowing the front end of the trailer to rest directly on ground level for straightforward loading and unloading of heavy equipment and oversized cargo. Once loading is complete, the gooseneck is reattached and the trailer is restored to its standard transport configuration. This design delivers a practical balance between acquisition cost and operational versatility, making it an attractive option for customers who require reliable heavy-cargo transport capability without the investment associated with a fully powered hydraulic gooseneck system.

4.2 Drawbar & Steering Swivel Arms

The drawbar assembly is engineered from high-strength forged steel, delivering exceptional structural durability and fatigue resistance under sustained heavy-load conditions. Its precision-machined coupling interface ensures stable steering response and efficient torque transmission between the prime mover and the modular trailer combination. The swivel arms feature a robust pivot bearing design that accommodates multi-directional articulation, enabling smooth steering across a wide range of turning radii. Both the drawbar and swivel arm assemblies are designed for rapid connection and disconnection, minimizing setup time on site. Their proven reliability in demanding heavy-haul transport applications makes them fully compatible with various module configurations, including single-line, multi-line, and hybrid axle arrangements.

4.3 Power Pack Unit

The SHIYUN’s Goldhofer modular trailer’s power pack unit serves as the central hydraulic power source for the entire transport system. It integrates a horizontally-mounted diesel engine, a multi-stage hydraulic pump assembly, a high-capacity reservoir, an oil-to-air cooling system, a manifold-mounted valve block, a hydraulic accumulator, and a microprocessor-based electronic control unit. When coupled with the trailer’s main control console, this power unit delivers precise hydraulic flow for suspension lifting and multi-mode steering actuation. For enhanced operational safety and visibility, the system can be configured with an electro-hydraulic proportional steering valve, enabling fully remote steering control from a safe vantage point. This ensures accurate maneuverability while keeping the operator clear of the immediate load zone during critical positioning tasks.

4.4 Low Profile Drop Deck

The drop deck module is engineered with an ultra-low deck height and a deep-digging excavator recess, specifically designed to maximize vertical clearance for transporting tall and oversized cargo. The platform features interchangeable floor inserts, allowing operators to customize the deck surface for different load types, while the short bogie spacing ensures superior maneuverability in confined job sites and tight turning radii. To accommodate varying cargo dimensions, the drop deck is designed with a modular splicing system, enabling the frame to be extended or shortened by selecting different deck lengths to match specific transport requirements. For heavy-haul applications where the payload exceeds 200 metric tons, we strongly recommend the installation of side-mounted load distribution beams. These beams effectively disperse concentrated weight across the trailer structure, ensuring structural integrity and compliance with road regulations during extreme heavy-lift operations.

4.5 Vessel Bridge

The Vessel Bridge is a purpose-built transport platform, specially engineered for the safe and efficient conveyance of extra-large, high-value, and heavy-duty cargoes such as industrial transformers, reactor vessels, pressure vessels, and other oversized project cargo. The platform features a telescopic length adjustment mechanism, enabling the bridge span to be extended or retracted to match the exact longitudinal dimensions of the load. In addition, the structure supports modular connection length expansion, allowing multiple bridge sections to be coupled together for longer cargo profiles. A width expansion system is also integrated, providing adjustable lateral support to accommodate loads of varying widths and ensuring full platform coverage. This combination of adjustable length, expandable width, and modular connectivity allows the Vessel Bridge to adapt to a wide range of cargo weights, tonnages, and dimensional configurations, delivering a versatile and reliable transport solution for the most demanding heavy-lift logistics operations.

4.6 Spacer (Intermediate Platform)

The spacer module — also referred to as an intermediate platform — serves as a structural extension element within the SHIYUN’s Goldhofer modular trailer system. It is designed to extend the effective loading area or increase the axle spacing between adjacent modules, enabling the trailer configuration to accommodate elongated or irregularly shaped cargo without imposing excessive loads on individual axle lines. Constructed with the same box-section frame architecture as the standard modular platform, the spacer maintains full structural compatibility with the main trailer system. This ensures uniform load distribution, consistent torsional rigidity, and seamless integration with adjacent modules through the standard bolt-plate coupling interface. The spacer can be deployed in various positions within the trailer combination — between axle modules, between a gooseneck and the main deck, or between multiple load-bearing sections — providing operators with the flexibility to tailor the platform length precisely to the cargo profile while preserving the overall structural integrity and road-worthiness of the transport combination.

4.7 Extendable Spacer (Telescopic Intermediate Platform)

The extendable spacer is one of the most widely specified accessories in the SHIYUN’s Goldhofer modular trailer range. Built upon the same high-strength box-section frame architecture as the standard intermediate platform, it adds a hydraulically actuated telescopic extension mechanism that allows the platform length to be adjusted on site to precisely match the longitudinal span of the cargo. This telescopic capability makes the extendable spacer particularly well suited for transporting extra-long project cargo such as wind turbine blades, tower sections, steel girders, bridge beams, and other elongated industrial components. Rather than requiring a dedicated fixed-length trailer for each cargo dimension, a single extendable spacer can be configured to accommodate a wide range of load lengths, significantly reducing the need for multiple specialized transport units. The extendable spacer is designed to be coupled between two standard modular trailer units, effectively bridging the gap and creating a continuous, stable loading surface across the full cargo length. Its modular coupling interfaces ensure full structural compatibility with the SHIYUN’s Goldhofer system, maintaining uniform load distribution and torsional rigidity throughout the transport combination. This makes it an ideal solution for operators who require a versatile, cost-effective platform extension without compromising the structural performance of the overall trailer configuration.

4.8 High Girder Bridge

For transport operations involving payloads exceeding 300 metric tons, the High Girder Bridge is the preferred structural solution. It is specifically engineered to address the challenge of highly concentrated loads — a common issue when transporting dense, compact cargo such as large power transformers, reactor vessels, and heavy industrial equipment — where the weight is concentrated over a relatively small footprint rather than being evenly distributed across the trailer platform. The High Girder Bridge features a deep box-section girder structure with exceptional bending strength and torsional rigidity, enabling it to span across multiple axle lines and effectively redistribute concentrated point loads over a wider structural area. This load-spreading capability prevents excessive stress on individual axle lines, ensuring that the weight is shared uniformly across the entire modular trailer combination and keeping each axle within its rated capacity. The girder bridge is mounted on top of the standard modular trailer platform and can be configured in various lengths and heights to suit the specific cargo profile and ground clearance requirements. Its modular design ensures full compatibility with the SHIYUN’s Goldhofer trailer system, allowing seamless integration with standard axle modules, power pack units, and coupling interfaces. By bridging the gap

between the cargo’s concentrated weight and the trailer’s distributed load-bearing structure, the High Girder Bridge delivers a safe, reliable, and structurally optimized solution for the most demanding ultra-heavy transport applications.

4.9 Long Load Turntable

For the transportation of extra-long cargo with relatively light structural weight — such as wind turbine blades, long steel girders, pipeline sections, and elongated structural assemblies — the Long Load Turntable offers a highly efficient and cost-effective transport solution. Rather than occupying a full continuous trailer platform, the turntable system supports the cargo at two discrete load-bearing points (front and rear), each independently mounted on a standard modular trailer axle unit. The front and rear support modules are connected through a synchronized steering linkage system, ensuring that both axle units articulate in unison during turning maneuvers. This coordinated steering maintains the longitudinal alignment of the cargo throughout the transport route, preventing lateral drift and ensuring stable tracking through curves and intersections. The turntable bearing interface at each support point allows controlled rotational movement, accommodating the natural angular displacement that occurs when the trailer combination negotiates bends. This dual-point support configuration significantly reduces the number of axle modules required compared to a full-length platform, resulting in lower overall transport cost while maintaining full operational safety and maneuverability. The system is fully compatible with the SHIYUN’s Goldhofer modular trailer platform, utilizing standard coupling interfaces and hydraulic connections for rapid assembly and deployment.

Transport Partner

SHIYUN modular trailer systems are engineered to Goldhofer performance standards — delivering world-class structural integrity, full platform compatibility, and field-proven reliability at a more competitive cost.

Built from high-strength steel with FEA-validated design, every SHIYUN module — from hydraulic goosenecks and power pack units to vessel bridges and high girder bridges — features standardized interfaces fully compatible with Goldhofer systems, enabling seamless fleet integration without modification.

Trusted across power generation, wind energy, and petrochemical logistics, SHIYUN combines engineering excellence with cost-effective accessibility — your reliable partner in heavy transport.

From Proven Foundation to Independent Innovation

Our modular trailer started with a solid engineering foundation but has since undergone extensive structural, hydraulic, and control system upgrades. The result is a product that retains the reliability of proven modular architecture while delivering:

• Improved structural strength — reinforced main beam and crossbeam design using high-strength steel
• Enhanced hydraulic circuit — upgraded hydraulic system with overload protection and pressure relief valves
• Optimized steering control — refined hydraulic and electronic steering for smoother, more precise operation
• Better adaptability — redesigned connection systems and module interfaces for faster assembly and wider compatibility

• Significantly lower acquisition cost compared to European-brand modular trailers
• Shorter delivery lead time — no long waiting lists
• Lower maintenance cost — locally available spare parts and technical support
• Faster ROI — one modular system replaces multiple specialized trailers

• Designed for international heavy haulage standards
• Suitable for Middle East, Africa, Southeast Asia, Latin America, and CIS markets
• Backed by comprehensive technical documentation, operator training, and after-sales support

When conventional trailers can’t handle the job, our hydraulic modular trailer delivers the power, flexibility, and precision your heaviest cargo demands — at a fraction of the cost of imported alternatives.

✉️ Contact us today for specifications, configuration options, and competitive quotation.