SPMT, Self Propelled Modular Transporters





Self propelled modular transporter

Self propelled modular transporter

China SinoTrailers has over 10 years experience in design and manufacture of SPMT, full name is self-propelled modular transporter. It is a kind of hydraulic platform trailer equipped with powered diesel engine to drive itself to move, lift and steer, no need help of tractor or prime mover.

Configuration of SPMT

  • Chassis frame, adopts Q690 high tensile steel, high safety factor.
  • Hydraulic pendulum suspension set, consists of pendulum arm, lifting cylinder, axle (normal axle, drive axle and brake axle) and tire (solid or pneumatic industrial tyre).
  • Hydraulic lifting system, 3 or 4 points supporting system, equipped with backup safety hydraulic line, make sure cargo and SPMT stable if any leakage happened.
  • Power system (Power Pack Unit), supply power for lifting, moving, steering, braking and illumination.
  • Driving system. Hydrostatic pressure came from PPU to hydraulic motor and cylinder to power the SPMT. Drive axle mounted with Rexroth reducer.
  • Steering system. Mainly has two steering ways, one is mechanical steering, using tie rod for steering, max. steering reaches up to 50 degrees. Another is hydraulic and electronic steering, adopting rack and pinion on each suspension, steering angle is over 130 degrees, could make the SPMT move to any direction you need, even to move laterally like crab. The system embedded with angle sensor to monitor its running, and guarantee precise steering.
  • ASR system. Embedded electronic control system make sure each wheel spin in same speed, and no slip and skid when the SPMT accelerates.
  • Braking system. Different with modular trailers using air pressure as power to brake, the China SPMT adopting hydraulic pressure and cylinder to realize accurate braking.
  • Circuit system. Power whole SPMT’s lighting system, could be LED illumination to maintain long working hours.
  • Control system, with wire control panel and wireless control panel.

Self-propelled modular transporter is widely used as a perfect solution to transport modules such as, oil platform rigs, factory modules, chemistry vessels, nuclear reaction tower, harbor crane in shipbuilding, high speed railway bridge construction, wind mill construction, offshore modules (load in/out), harbor logistics, and other engineering logistic projects. Industries like construction, chemical engineering, refinery, metallurgy, ocean engineering, conventional energy and eco energy all have increasing demand on SPMT.

Considering of steering modes, SPMTs can be divided into two types:

1. Tie rod steering type (hydraulic and mechanical steering) . Non-driving axles module is hydraulic modular trailer, max steering angle is around 50°.

2. Independent suspension type (electronically and hydraulic steering). Max steering angle is up to 130°, this type SPMT can move sideways like a crab.

Features of China SPMT

  • Horizontal diesel engine from MTU/MAN/Deutz/Cummins, up to 390kw.
  • Top parts like Omron relay, Siemens contactor, etc.
  • ASR anti-skidding system.
  • Steering diagnostics and tracking system help to exclude failure in advance.
  • Radio remote control is an option, realize open view drive of SPMT, with outstanding maneuverability and high security.
  • All wheels steerable, multiple and flexible steering modes.
  • Platform height is adjustable.
  • Safety valve in hydraulic circuit.
  • End by end combination and side by side combination of each module are available.
  • Moving sideways like a crab is an option.
  • The drive to walk smooth and reliable. Use variable pump and variable motor components of the closed hydrostatic drive system, can realize the precise speed regulation, stable and reliable.
  • High carrying capacity. The rated carrying capacity is up to 40 metric tons each axle line, the maximum tonnage of transport up to 60,000 tons after combination.
  • Max output traction of each driving axle is 16t. The number of drive axles can be configured according to actual situation.
  • Height and angle of PPU is adjustable, to adapt different working conditions. Even to disassemble PPU and put it on top of China SPMT to reduce total length, then get high trafficability, enable its efficient move in hairpin turn or narrow space.
  • Self-adapting hydraulic system guarantee cargo platform level when SPMT running on uneven roads.
  • Accurate movement and steering make sure it has high performance in modules connection and assembly.
  • Combination system enable modules could be connected laterally and longitudinally to adapt different cargo sizes and weights. Also, modules can be coupled with hydraulic hose and electronical cable to transport oversize cargo with relatively light weight, just need less quantity of SPMTs to work in “soft-connection” mode.
  • When preset a working program (moving and steering mode), China SPMT can work automatically.

Specifications of Self-Propelled Modular Transporter

Type S2.43 G3.0 N3.0-1 N3.4
Platform Width (mm) 2430 3000 2990 3400
Wheelbase (mm) 1400 1500 1550 1600
Platform Height (mm) 1500±300 1175±300 1070±300 1070±210
Min. Height (mm) 1200 875 770 860
Max. Steering Angle 90° 55°/100° 50° 45°

What SinoTrailers Offers:

  • All kinds of China made SPMTs, compatible with Scheuerle, Goldhofer, Cometto, Kamag and Nicolas.
  • SPMT parts, able to replace parts of original SPMT made in Europe.
  • Upgrade hydraulic trailers to SPMT.
  • Service of door-to-door refurbish of SPMT.
  • Door-to-door service of replacing malfunctional parts.
  • Trouble-shooting service.
  • SPMT operator training and out-sourcing service.

Want to move hundreds tons’ cargo for long distance road transport? You probably need modular hydraulic axle trailer.

SinoTrailers – A Factory of China SPMT, self-propelled modular transporter