機(jī)械外文翻譯---液壓機(jī)-液壓系統(tǒng)-wenkub
2023-01-30 06:14:44 本頁(yè)面
【正文】 work. So hydraulics can provide great force, are obviously very adaptable and used in all kinds of applications, but how do they actually work? What is this hydraulics stuff? Hydraulics is based on a very simple fact of nature you cannot press a liquid. You can press a gas (think about putting more and more air into a tire, the more you put in, the higher the pressure). If you39。 Today most hydraulic systems utilize oil rather than water but the principle is the same. You can press a liquid, and a force that is applied at one point is transmitted to another point by that inpressible fluid. Because of its liquid nature, hydraulic systems can transmit force through pipes of any shape and length, so the force can be applied at one central point and transmitted efficiently to another point or to multiple points far away. Think about the master cylinder in you car39。 the water is then available as a power source to drive turbines when energy bees scarce. In driving certain industrial hydraulic machines an apparatus called an accumulator is employed to supply high power for short periods of time. One type consists essentially of a cylinder enclosing a piston loaded with weights. When water is slowly pumped into the cylinder, the piston and weights are forced up to a position where they are held. When they are released, they force the water out of the cylinder rapidly, providing the machine with hydraulic power. Hydrostatic Devices Water or oil under pressure is monly used as a source of power for many types of presses, riveting machines, capstans, winches, and other machines. The hydraulic press, or hydrostatic press, was invented by Joseph Bramah and is therefore sometimes called the Bramah press. It consists essentially of two cylinders each filled with liquid and each fitted with a pis
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