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Because there is a traveling pulley at the load, this doubles the mechanical advantage of the fixed (anchored) sprocket assembly, leading to a total mechanical advantage of 2 × P 1 / P 1 − P 2 . For instance, a 1-ton differential chain fall might have a 15-pocket and a 14-pocket sprocket set.
Both wire rope and chain hoist have been in common use since the 1800s, however mass production of electric hoists did not start until the early 1900s and was first adapted by Germany. [citation needed] A hoist can be a serial production unit or a custom unit. Serial production hoists are typically more cost-effective and designed for a ten ...
The 9M133F-1 Kornet variant with a thermobaric warhead was expected to enter serial production in 2019, according to a company report. [ 13 ] The NATO reporting name AT-14 Spriggan is derived from the spriggan , a legendary creature from Cornish faery lore.
A drum hoist (steel wire rope visible) and motor. In underground mining a hoist or winder [1] is used to raise and lower conveyances within the mine shaft.Modern hoists are normally powered using electric motors, historically with direct current drives utilizing Ward Leonard control machines and later solid-state converters (), although modern large hoists use alternating current drives that ...
The electric chain hoist, also known as the "electric hoist", is the least used type of engine crane. The operation is similar to the chain hoist in the way that chains are used to lift the engine. The electric chain hoist uses an electric motor operated by remote control to lift the engine, unlike the chain hoist where the operator has to ...
The 9M133M Kornet-M [2] (also known by the export designation 9M133 Kornet-EM) [1] Russian anti-tank guided missile (ATGM) is an improved version of the 9M133 Kornet ATGM, with increased range and an improved warhead. Kornet-EM missiles are chiefly used on the Kornet-D system. [1]
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