機械外文翻譯---液壓機-液壓系統(tǒng)-全文預覽
【正文】 the larger piston having an area of 50 sq in. would be 2,500 lb (100 50/2 =2,500).However, when the pistons move, the distance the smaller piston travels is proportionately greater than the distance the larger piston travels, satisfying the law of conservation of energy. If the smaller piston moves 25 in., the larger one will only move 1 in. The hydraulic press is used, for example, to form threedimensional objects from sheet metal and plastics and to press large objects. The hydraulic jack, also an application of Pascal39。 The amount of work produced per pound of falling water is proportional to the head. Water power can be produced in this way from many natural sources, such as waterfalls and dammed rivers.。t possible to press it. Now if you put that liquid into a sealed system and push on it at one end, that pressure is transmitted through the liquid to the other end of the system. The pressure is not diminished. . Hydraulics is Old Stuff The basic concept of hydraulics is not new. The Greeks understood about using water to provide lift and force, and the name hydraulics e form the Latin word for water HYDRA. In the middle Ages, Leonardo da Vinci formulated the basic principle of hydraulics called continuity and Galileo experimented with hydraulics. Hydraulics were even used during the construction of the Eiffel Tower in Paris in the late 188039。re really strong you ca n press a solid mass as well. But no matter how much pressure you apply onto a liquid, it isn39。s brakes and how, by stepping on the brake pedal, you apply stopping pressure on the brakes on all four wheels. Physics Basic physics tells us that we can trade off force for distance in all mechanical systems. In a hydraulic system, we do this by changing the relative size of the pistons at each end of the system. For example, a small pis
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