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Shaft Mining, Mine Shaft
Shaft may refer to: Rotating machine elements * Shaft (mechanical engineering), a rotating machine element used to transmit power * Line shaft, a power transmission system * Drive shaft, a shaft for transferring torque * Axle, a shaft around which one or more wheels rotate Vertical narrow passages * Elevator shaft, a vertical passage housing a lift or elevator * Ventilation shaft, a vertical passage used in mines and tunnels to move fresh air underground, and to remove stale air * Shaft (civil engineering), an underground vertical or inclined passageway * Pitch (ascent/descent), a significant underground vertical space in caving terminology * Shaft mining, the method of excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom * Shafting, illicit travelling through shafts Long narrow rigid bodies * The body of a column between the capital and the pedestal, or the column itself * Type of long handle (grip) of hand-tools ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shaft (mechanical Engineering)
In mechanical engineering, a shaft is a rotating machine element, usually circular in cross section, which is used to transmit power from one part to another, or from a machine which produces power to a machine which absorbs power. Types They are mainly classified into two types. * Transmission shafts are used to transmit power between the source and the machine absorbing power; e.g. counter shafts and line shafts. * Machine shafts are the integral part of the machine itself; e.g. crankshaft. *Axle shaft. *Spindle shaft. Materials The material used for ordinary shafts is mild steel. When high strength is required, an alloy steel such as nickel, nickel-chromium or chromium-vanadium steel is used. Shafts are generally formed by hot rolling and finished to size by cold drawing or turning and grinding. Standard sizes Source:Mahadevan K and Reddy K.Balaveera, (2015), 'Design data hand book', CBS publishers and Distributors (P) ltd., New-Delhi, Machine shafts * Up to 25&nbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |