液壓系統(tǒng)外文資料翻譯-液壓系統(tǒng)-免費閱讀
【正文】 (4) The internationalization of the domestic market and the increasing degree of foreign panies have entered the Chinese market and participate in petition with the domestic private and cooperative enterprises, individuals, foreignfunded enterprises, such as the rise of stateowned enterprises due to the growing impact. the development trend 外文資料翻譯 7 As the socialist market economy continues to deepen, hydraulic, pneumatic and sealing products in the market supply and demand and there is a greater change, long ago to a shortage of the seller39。 Rubber seal 350 species more than 5,000 specifications have been basically cater to the different types of mainframe products to the general needs, plete sets of equipment for major varieties of matching rate was over 60%, and started a small amount of exports. 1998 pieces of homemade hydraulic output million. sales of about 28 billion (of which about 70% mechanical systems)。80~9039。 隨著社會主義市場經(jīng)濟的不斷深化，液壓、氣動和密封產(chǎn)品的市場供求關(guān)系發(fā)生較大變化，長期來以 “短缺 ”為特征的賣方市場已基本成為以 “結(jié)構(gòu)性過剩 ”為特征的買方市場所取代。目前，在國內(nèi)運用成熟和廣泛的的 CAN 總線技術(shù)是德國 BOTCH 公 司提出的。 我國液壓、氣動和密封工 業(yè)雖取得了很大的進步，但與主機發(fā)展需求，以及和世界先進水平相比，還存在不少差距，主要反映在產(chǎn)品品種、性能和可靠性等方面。 在軟件設(shè)計采用模塊化設(shè)計，不同的液壓保護裝置用在不同的礦中，這使高性能控制器的軟件存在很大的差異 。近年來，行業(yè)加大了技術(shù)改造力度， 1991~1998 年國家、地方和企業(yè)自籌資金總投入共約 20 多億元，其中液壓 16 億多元。 1968 年中國液壓元件年產(chǎn)量已接近 20 萬件； 1973 年在機床、農(nóng)機、工程機械等行業(yè)，生產(chǎn)液壓件的專業(yè)廠已發(fā)展到 100 余家，年產(chǎn)量超過100 萬件，一個獨立的液壓件制造業(yè)已初步形成。 油箱－－板焊的半封閉容器，上還裝有濾油網(wǎng)、空氣濾清器等，用來儲油、油的冷卻及過濾。 它按逐級要求供油。 集成塊－－由液壓閥及通道體組裝而成。其中，液壓工業(yè)于 50 年代初從機床行業(yè)生產(chǎn)仿蘇的磨床、拉床、仿形車床等液壓傳動起步，液壓元件由機床廠的液壓車間生產(chǎn)，自產(chǎn)自用。 進入 80 年代，在國家改革開放的方針指引下，隨著機械工業(yè)的發(fā)展，基礎(chǔ)件滯后于主機的矛盾日益突出，并引起各有關(guān)部門的重視。 經(jīng)過 40 多年的努力，我國液壓、氣動和密封件行業(yè)已形成了一個門類比較齊 全，有一定生產(chǎn)能力和技術(shù)水平的工業(yè)體系。 1998 年國產(chǎn)液壓件產(chǎn)量 480 萬件，銷售額約 28 億元（其中機械系統(tǒng)約占 70%）；氣動件產(chǎn)量 360 萬件，銷售額約 億元（其中機械系統(tǒng)約占 60%）；外文資料翻譯 4 密封件產(chǎn)量約 8 億件，銷售額約 10 億元（其中機械系統(tǒng)約占 50%）。 1998 年國內(nèi)市場液壓件需 求總量約 600 萬件，銷售總額近 40 億元；氣動件需求總量約 500 萬件，銷售總額 7 億多元；密封件需求總量約 11 億件，銷售總額約 13 億元。因此，這個系統(tǒng)需要大量的獨立電源。 distribution of a full range of electrical control. Hydraulic Station principle : motor driven pump rotation, which pump oil absorption from the oil tank. to mechanical energy into hydraulic pressure to the station, hydraulic oil through Manifold (or valve binations) realized the direction, pressure, After adjusting flow pipe and external to the cylinder hydraulic machinery or motor oil, so as to control the direction of the motive 外文資料翻譯 2 fluid transformation force the size and speed the pace of promoting the various acting hydraulic machinery. A development course China Hydraulic (including hydraulic, the same below), pneumatic and seals industrial development process can be broadly divided into three phases, namely : 20 early 1950s to the early 1960s, the initial stage。s 6。 Seals total demand of about billion. total sales of about billion. the development trend of the future affect the development of the main factors (1) product development ability, and the level of technological development and speed can not pletely meet the advanced mainframe products, major equipment and technology imported equipment and maintenance support。 and the host of urgent hightech highparameter, high valueadded highend products, and they do not satisfy the market needs, only dependent on imports. China joins the WTO, its impact may be even greater. Therefore, the 15 during the growth of the output value of industry, must not depend on volume growth and the industry should address the structural problems of their own,
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