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Typically mounted on top of the mud tanks. Drawworks (#7) is the mechanical section that contains the spool, whose main function is to reel in/out the drill line to raise/lower the traveling block . Drill bit (#26) is a device attached to the end of the drill string that breaks apart the rock being drilled.
Electric overhead traveling cranes or EOT cranes are a common type of overhead crane, also called bridge cranes. They consist of parallel runways, much akin to rails of a railroad, with a traveling bridge spanning the gap. [1] EOT cranes are specifically powered by electricity.
Gantry-style overhead cranes of the Hainaut quarry in Soignies, Belgium. 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.
Another means of providing support for lateral loads is a push brace pole, a second shorter pole that is attached to the side of the first and runs at an angle to the ground. If there is no space for a lateral support, a stronger pole, e.g. a construction of concrete or iron, is used.
Although some roundhouses used by Class 1 railroads were built as a full-circle with as many as 52 stalls, the vast majority were only part of a circle with 12 or fewer stalls. [ 20 ] Nearly every locomotive terminal in the country was anchored by a roundhouse, especially if a railroad owned more than a few locomotives.
Transmission tower in Toronto, ON Single-circuit three-phase transmission line Transmission towers on a hill field. Three-phase electric power systems are used for high voltage (66- or 69-kV and above) and extra-high voltage (110- or 115-kV and above; most often 138- or 230-kV and above in contemporary systems) AC transmission lines.
While overhead systems typically use ducts to distribute the air, UFAD systems use the underfloor plenum formed by installation of a raised floor. The plenum generally sits 0.3 and 0.46 metres (12 and 18 in ) above the structural concrete slab, although lower heights are possible.
Hastings Racecourse's starting gate, 2009. Start of the Belmont Stakes 2014 Horses leaving barrier stalls at the start of a Hong Kong Derby.. A starting gate, also called a starting barrier or starting stalls, is a machine used to ensure a fair start to in horse racing and dog racing.