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  2. Catenary maintenance vehicle - Wikipedia

    en.wikipedia.org/wiki/Catenary_Maintenance_Vehicle

    Both a crane and a movable platform can be seen on the vehicle's roof. A catenary maintenance vehicle (also known as a tower wagon or tower car) is a railroad maintenance of way vehicle that is used to maintain and inspect overhead line (also known as catenary) on electrified railroad or metro tracks. [1] [2] Such vehicles are typically self ...

  3. Crane Manufacturers Association of America - Wikipedia

    en.wikipedia.org/wiki/Crane_Manufacturers...

    Member companies represent industry leaders in the overhead crane market, serve the United States market from operations based in the United States, Canada, and Mexico. CMAA, formerly the Electric Overhead Crane Institute, is an incorporated organization of leading electric overhead traveling crane manufacturers in the United States and an ...

  4. List of bridge failures - Wikipedia

    en.wikipedia.org/wiki/List_of_bridge_failures

    Partial failure of bridge deck. Overhead superstructure undamaged. Bridge reopened after complete reconstruction. Existing overhead arch remained, however new bridge deck was designed to be supported by sets of 4 hanger cables, where the existing deck was designed for single hanger cables. Kinzua Bridge: Kinzua Bridge State Park, Pennsylvania

  5. Accredited Crane Operator Certification - Wikipedia

    en.wikipedia.org/wiki/Accredited_Crane_Operator...

    Accredited Crane Operator Certification OSHA regulation 29 CFR 1926 Subpart CC, released August 9, 2010, requires crane operators involved in construction to be certified by an accredited certification provider by November 10, 2014. [ 1] An operator is defined as any person operating the equipment. To be accredited, certification providers must ...

  6. Internal combustion engine - Wikipedia

    en.wikipedia.org/wiki/Internal_combustion_engine

    An internal combustion engine ( ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high- temperature and high- pressure gases produced by combustion ...

  7. Heavy equipment - Wikipedia

    en.wikipedia.org/wiki/Heavy_equipment

    Heavy equipment usually comprises five equipment systems: the implement, traction, structure, power train, and control/information. Heavy equipment has been used since at least the 1st century BC when the ancient Roman engineer Vitruvius described a crane in De architectura when it was powered via human or animal labor.

  8. Overhead crane - Wikipedia

    en.wikipedia.org/wiki/Overhead_crane

    An overhead crane, commonly called a bridge crane, is a type of crane found in industrial environments. An overhead crane consists of two parallel rails seated on longitudinal I-beams attached to opposite steel columns by means of brackets. The traveling bridge spans the gap. A hoist, the lifting component of a crane, travels along the bridge.

  9. Crane (machine) - Wikipedia

    en.wikipedia.org/wiki/Crane_(machine)

    An overhead crane being used in typical machine shop. The hoist is operated via a wired pushbutton station to move system and the load in any direction. An overhead crane, also known as a bridge crane, is a type of crane where the hook-and-line mechanism runs along a horizontal beam that itself runs along two widely separated rails. Often it is ...