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  2. Self-propelled modular transporter - Wikipedia

    en.wikipedia.org/wiki/Self-propelled_modular...

    This was done with the help of an Electric power pack unit (EPPU) which replaced the gas powered PPU. The ESPMTs help to reduce carbon footprint of the companies and also the haulage industry. These electric modules are safer and quieter when compared with the diesel modules, which can benefit operations which are held in mines and energy plants.

  3. Hydraulic modular trailer - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_modular_trailer

    Tiiger four-axle HMT module at Transporter Industry International headquarters in Haryana, India. A hydraulic modular trailer (HMT) is a special platform trailer unit which feature swing axles, hydraulic suspension, independently steerable axles, two or more axle rows, compatible to join two or more units longitudinally and laterally and uses power pack unit (PPU) to steer and adjust height. [1]

  4. Pipe bursting - Wikipedia

    en.wikipedia.org/wiki/Pipe_bursting

    There are five key pieces of equipment used in a pipebursting operation: the expander head, pulling rods, a pulling machine, a retaining device, and a hydraulic power pack. Today's expander heads have a leading end much smaller in diameter than the trailing (bursting) end, small enough to fit through the pipe that will be replaced.

  5. Powerpack (drivetrain) - Wikipedia

    en.wikipedia.org/wiki/Powerpack_(drivetrain)

    A powerpack at the frontend of Goldhofer SPMT hauling oversize load.. The modularity is what makes a powerpack powertrain different from other types; using the term powerpack implies that the whole unit can be easily removed or separated from the rest of the machine, allowing it to be rapidly replaced by another powerpack while the original is repaired or disposed of, and minimizing the amount ...

  6. Hydraulic machinery - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_machinery

    Hydraulic power pack; Transmission lines Hydraulic hoses; Passive components Hydraulic cylinders; For the hydraulic fluid to do work, it must flow to the actuator and/or motors, then return to a reservoir. The fluid is then filtered and re-pumped. The path taken by hydraulic fluid is called a hydraulic circuit of which there are several types.

  7. Hydraulic compressor - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_compressor

    A hydraulic compressor is a means of compressing air using hydraulic energy. There are two very different types of machines referred to as hydraulic compressors. One type is a mechanical air compressor that is driven by a hydraulic motor. It is a method of converting hydraulic power to pneumatic power. [1]

  8. Judge upholds guilty plea of Trump co-defendant Kenneth ...

    www.aol.com/judge-upholds-guilty-plea-trump...

    The judge's ruling nixes effort by Kenneth Chesebro, a Trump election lawyer in 2020, to say his guilty plea violated his right to due process.

  9. Power transfer unit - Wikipedia

    en.wikipedia.org/wiki/Power_transfer_unit

    In aviation, a power transfer unit (PTU) is a device that transfers hydraulic power from one of an aircraft's hydraulic systems to another in the event that the other system has failed or been turned off. The PTU is used when, for example, there is right hydraulic system pressure but no left hydraulic system pressure.