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Vibratory pile hammers contain a system of counter-rotating eccentric weights, powered by hydraulic motors, and designed so that horizontal vibrations cancel out, while vertical vibrations are transmitted into the pile. The pile driving machine positioned over the pile with an excavator or crane, and is fastened to the pile by a clamp and/or bolts.
Left Coast Lifter made its first lift on the new Tappan Zee bridge in April 2015, [22] a steel-reinforced concrete pile cap which formed part of the bridge's foundation. The massive crane was being used for heavy lifts of large bridge sections, [23] and placed the final steel girder for the new Rockland-bound (westbound) span in October 2016. [24]
Hiab invented the world's first hydraulic truck mounted crane in 1947. [3] The name, Hiab, comes from the commonly used abbreviation of Hydrauliska Industri AB, a company founded in Hudiksvall, Sweden in 1944 by Eric Sundin, a ski manufacturer who saw a way to utilize a truck's engine to power loader cranes through the use of hydraulics.
The XGC88000 crawler crane, unlike the majority of crawler cranes, comes in two sections. The primary section consists of the crane itself, which boasts a maximum boom length of 144 meters, a maximum total length of 173 meters (including the counterweight radius), a maximum height (when fully erect) of 108 meters, a lifting capacity ranging between 3,600 and 4,000 tons [10] [11] [12] (although ...
Crane Carrier Company (CCC) is a manufacturer that specializes in construction truck and garbage truck chassis. Located in New Philadelphia, Ohio, it was established by Robert Zeligson in 1946, along with the affiliated Zeligson Trucks. Since 2021, CCC has been owned by electric vehicle developer Battle Motors.
Meanwhile, new manufacturing facilities in Xuzhou for all-terrain cranes, wheeled loaders, concrete pumps, and other concrete machineries were completed at a cost of US$1.9 billion. Occupying around 2 million square meters, the facilities are able to build 5,000 large and medium capacity cranes, 40,000 wheeled loaders and 20,000 units of ...
The possibility of a steam hammer was noted by James Watt (1736–1819) in his 28 April 1784 patent for an improved steam engine. [12] Watt described "Heavy Hammers or Stampers, for forging or stamping iron, copper, or other metals, or other matters without the intervention of rotative motions or wheels, by fixing the Hammer or Stamper to be so worked, either directly to the piston or piston ...
Vibratory Stress Relief, often abbreviated VSR, is a non-thermal stress relief method used by the metal working industry to enhance the dimensional stability and mechanical integrity of castings, forgings, and welded components, chiefly for two categories of these metal workpieces: