機械設(shè)計外文翻譯--液壓系統(tǒng)-其他專業(yè)-資料下載頁
2025-01-19 06:04本頁面
【導讀】理而發(fā)展起來的一門新興技術(shù)，1795年英國約瑟夫?壓機，1905年他將工作介質(zhì)水改為油，又進一步得到改善。第一次世界大戰(zhàn)后液壓傳動廣泛應用，特別是1920年以后，發(fā)展更為迅速。件大約在19世紀末20世紀初的20年間，才開始進入正規(guī)的工業(yè)生產(chǎn)階段。尼斯克對能量波動傳遞所進行的理論及實際研究，1910年對液。力傳動方面的貢獻，使這兩方面領(lǐng)域得到了發(fā)展。第二次世界大戰(zhàn)期間,在美國機床中有30%應用了液壓傳動。應該指出,日本液壓傳動。的發(fā)展較歐美等國家晚了近20多年。近20-30年間，日本液壓傳動發(fā)展之快，居世界領(lǐng)先地位。示信號流，而實心箭頭則表示能量流。污染場地，而且還可能引起火災和爆炸事故。液壓元件摩擦副的磨損，進一步導致泄漏。的沖擊以及控制閥打開關(guān)閉過程中產(chǎn)生的沖擊都是系統(tǒng)發(fā)生振動的原因。
【正文】 e flow velocity in various parts of the existence of different, resulting in the existence of a liquid within the internal friction of liquids and pipelines at the sam e time there is friction between the inner wall, which are a result of hydraulic the reasons for the oil tempera ture. Temperature will lead to increased internal and external leakage, reducing its mechanical efficiency. At the same time as a result of high temperature, hydraulic oil expansion will occur, resulting in increased pression, so that action can not be very good control of transmission. Solution: heat is the inherent characte ristics of the hydraulic system, not only to minimize eradication. Use a good quality hydraulic oil, hydraulic piping arrangement should be avoided as far as possible the emergence of bend, the use of highquality pipe and fittings, hydraulic valves, etc. 10 2, the vibration of the vibration of the hydraulic system is also one of its malaise. As a result of hydraulic oil in the pipeline flow of highspeed impact and the control valve to open the closure of the impact of the process are the reasons for the vibration system. Strong vibration control action will cause the system to error, the system will also be some of the more sophisticated equipment error, resulting in system failures. Solutions: hydraulic pipe should be fixed to avoid sharp bends. To avoid frequent changes in flow direction, can not avoid damping measures should be doing a good job. The entire hydraulic system should have a good damping measures, while avoiding the external local oscillator on the system. 3, the leakage of the hydraulic system leak into inside and outside the leakage leakage. Leakage refers to the process with the leak occurred in the system, such as hydraulic pistoncylinder on both sides of the leakage, the control valve spool and valve body, such as between the leakage. Although no internal leakage of hydra ulic fluid loss, but due to leakage, the control of the established movements may be affected until the cause system failures. Outside means the occurrence of leakage in the system and the leakage between the external environment. Direct leakage of hydraulic oil into the environment, in addition to the system will affect the working environment, not enough pressure will cause the system to trigger a fault. Leakage into the enviro nment of the hydraulic oil was also the danger of fire. Solution: the use of better quality seals to improve the machining accuracy of equipment. Another: the hydraulic system for the three diseases, it was summed up: fever, with a father(This is the summary of the northeast people). Hydraulic system for the lifts, excavators, pumping station, dynamic, crane, and so on largescale industry, construction, factories, enterprises, as well as elevators, lifting platforms, Deng Axle industry and so on. Hydraulic ponents will be highperformance, highquality, high reliability, the system sets the direction of development。 to the low power, low noise, vibration, without leakage, as well as pollution control, waterbased media applications to adapt to environmental requirements, such as the direction 11 of development。 the development of highly integrated high power density, intelligence, mechatronics and microlight minihydraulic ponents。 active use of new techniques, new materials and electronics, sensing and other hightech.
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