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  2. Bulk-handling crane - Wikipedia

    en.wikipedia.org/wiki/Bulk-handling_crane

    A bulk-handling crane is one that, instead of a simple hook that can handle a range of slung loads, has an integral grab for lifting bulk cargoes such as coal, mineral ore etc. Where the grab is a two-piece hinged bucket, it is known as a shell grab or shell bucket. Working the grab requires extra cables from the crane jib, so requires a ...

  3. Strand jack - Wikipedia

    en.wikipedia.org/wiki/Strand_jack

    Strandjack at Freybridge in Berlin–Spandau 52° 30′ 42,11″ N, 13° 12′ 11,7″ O. A strand jack (also known as strandjack) is a jack used to lift very heavy loads (e.g. thousands of tons or more with multiple jacks) for construction and engineering purposes. [1]

  4. Crane (machine) - Wikipedia

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

    These can be built using typical steel beams or a more complex box girder type. Pictured on the right is a single bridge box girder crane with the hoist and system operated with a control pendant. Double girder bridge are more typical when needing heavier capacity systems from 10 tons [which?] and above. The advantage of the box girder type ...

  5. Plate girder bridge - Wikipedia

    en.wikipedia.org/wiki/Plate_girder_bridge

    Anatomy of a plate girder. Generally, the depth of the girder is no less than 1 ⁄ 15 the span, and for a given load bearing capacity, a depth of around 1 ⁄ 12 the span minimizes the weight of the girder. Stresses on the flanges near the centre of the span are greater than near the end of the span, so the top and bottom flange plates are ...

  6. Counterweight - Wikipedia

    en.wikipedia.org/wiki/Counterweight

    A simple crane. A counterweight is a weight that, by applying an opposite force, provides balance and stability of a mechanical system. [1] The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and causes less wear and tear on the lifting machine.

  7. Pile driver - Wikipedia

    en.wikipedia.org/wiki/Pile_driver

    The weight of the piston compresses the air/fuel mixture, heating it to the ignition point of diesel fuel. The mixture ignites, transferring the energy of the falling weight to the pile head, and driving the weight up. The rising weight draws in fresh air, and the cycle continues until the fuel is depleted or is halted by the crew. [12]

  8. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    Hose clamps with worm gear drive; shape A, DIN 3017-2: Hose clamps – Part 2: Clamps with fastening lugs, DIN 3017-3: Hose clamps – Part 3: Bolt clamps, DIN 3017-4: Hose clamps – Part 4: Technical delivery conditions, DIN 3017-5: Hose clamps – Part 5: Wide strip hose clamps with fastening lugs; Types D and E, DIN 3113: Combination Wrench ...

  9. Bailey bridge - Wikipedia

    en.wikipedia.org/wiki/Bailey_bridge

    Royal Engineers construct a Bailey bridge in Italy, September 1943. Wood planks are being laid over the stringers to construct the roadbed. The success of the Bailey bridge was due to the simplicity of the fabrication and assembly of its modular components, combined with the ability to erect and deploy sections with a minimum of assistance from heavy equipment.

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