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The scissor mechanism is a mechanical linkage system used to create vertical motion or extension. It consists of a series of interconnected, folding supports that resemble the shape of a pair of scissors, hence its name. The scissor mechanism is widely employed in various applications, including scissor lifts, folding tables, adjustable height ...
The most common lift table design incorporates hydraulic cylinders and an electrically powered pump to actuate the scissor lifting mechanism. Lift tables can also be driven by pneumatic sources, trapezoidal-threaded screw drives, push chains or by hydraulic foot pump when the load is not heavy. The choice of drive mechanism depends on factors ...
American Steel and Wire – United States; Applevage – France, manufactured ropeways between the 1930s and 1962 [39] ATG – Germany [40] Australasian Ropeway – Australia, manufactured chairlifts between the 1960s and 1970s; Badoni – Italy [41] Bell – Switzerland, manufactured ropeways between 1877 and 1968 [42] BM Lifts – Canada
Replacing an advertising poster in London using an aerial work platform. An aerial work platform (AWP), also an aerial device, aerial lift, boom lift, bucket truck, cherry picker, elevating work platform (EWP), mobile elevating work platform (MEWP), or scissor lift, is a mechanical device used to provide temporary access for people or equipment to inaccessible areas, usually at height.
The power can range from under 7.5 kW (10 hp) for the smallest of lifts, to more than 750 kW (1000 hp) for a long, swift, detachable eight-seat up a steep slope. DC electric motors and DC drives are the most common, though AC motors and AC drives are becoming economically competitive for certain smaller chairlift installations. DC drives are ...
For users with shorter legs a short seat can be fitted, to make the lift more comfortable to sit on. Seats can be tailored to suit individual needs. The conventional layout for a typical domestic stair lift is to have the seat at right angles to the rail so the user travels "sidesaddle". At the top of the staircase the seat can be swiveled ...