液壓系統(tǒng)外文資料翻譯-液壓系統(tǒng)-預(yù)覽頁
【正文】 －上裝有電機(jī)和油泵，是液壓站的動力源，將機(jī)械能轉(zhuǎn)化為液壓油的壓力能。 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。 我國液壓（含液力，下同）、氣 動和密封件工業(yè)發(fā)展歷程，大致可分為三個(gè)階外文資料翻譯 2 段，即： 20 世紀(jì) 50 年代初到 60 年代初為起步階段； 60~70 年代為專業(yè)化生產(chǎn)體系成長階段； 80~90 年代為快速發(fā)展階段。 1968 年中國液壓元件年產(chǎn)量已接近 20 萬件； 1973 年在機(jī)床、農(nóng)機(jī)、工程機(jī)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(gè)獨(dú)立的液壓件制造業(yè)已初步形成。 70 年代，在原燃化部、一機(jī)部、農(nóng)機(jī)部所屬系統(tǒng)內(nèi)，一批專業(yè)生產(chǎn)廠相繼成立，并正式形成行業(yè)，為密封件工業(yè)的發(fā)展成長奠定了基礎(chǔ)。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。目前我國已和美國、日本、德國等國著名廠商合資或由外國廠商獨(dú)資建立了柱塞泵 /馬達(dá)、行星減速機(jī)、轉(zhuǎn)向器、液壓控制閥、液壓系統(tǒng)、靜液壓傳動裝置、液壓件鑄造、氣動控制閥、氣缸、氣源處理三聯(lián)件、機(jī)械 密封 、橡塑密封等類產(chǎn)品生產(chǎn)企業(yè) 50 多家，引進(jìn)外資 2 億多美元。 在軟件設(shè)計(jì)采用模塊化設(shè)計(jì)，不同的液壓保護(hù)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 。其中，液壓有 1200 個(gè)品種、 10000 多個(gè)規(guī)格（含液力產(chǎn)品 60 個(gè)品種、 500 個(gè)規(guī)格）；氣動有 1350 個(gè)品種、 8000 多個(gè)規(guī)格；橡塑密封有 350 個(gè)品種、 5000 多個(gè) 規(guī)格，已基本能適應(yīng)各類主機(jī)產(chǎn)品的一般需要，為重大成套裝備的品種配套率也可達(dá) 60%以上，并開始有少量出口。 我國液壓、氣動和密封工 業(yè)雖取得了很大的進(jìn)步，但與主機(jī)發(fā)展需求，以及和世界先進(jìn)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。按金額計(jì)，目前進(jìn)口產(chǎn)品的國內(nèi)市場占有率約為 30%。目前，在國內(nèi)運(yùn)用成熟和廣泛的的 CAN 總線技術(shù)是德國 BOTCH 公 司提出的。通常每個(gè)電源只能提供五或六個(gè)控制器 ，電磁先導(dǎo)閥的電量。 隨著社會主義市場經(jīng)濟(jì)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。 外文資料翻譯 1 Hydraulic system Introduction Hydraulic Pump Station also known as the stations are independent hydraulic device. It requested by the oil gradually. And controlling the hydraulic oil flow direction, pressure and flow rate, applied to the mainframe and hydraulic devices separability of hydraulic machinery. Users will be provided after the purchase hydraulic station and host of implementing agencies (motor oil or fuel tanks) connected with tubing, Hydraulic machinery can be realized from these movements and the work cycle. Hydraulic pump station is installed, Manifold or valve bination, tanks, a bination of electrical boxes. Functional ponents : Pump device is equipped with motors and pumps, hydraulic station is the source of power. to mechanical energy into hydraulic oil pressure can be. Manifold from hydraulic valve body and channel assembled. Right direction for implementation of hydraulic oil, pressure and flow control. Valve portfolio plate valve is installed in up board after board connects with the same functional IC. Tank plate welding semiclosed containers, also loaded with oil filtering work, air filters, used oil, oil filters and cooling. Electrical boxes at the two patterns. A set of external fuse terminal plate。80~9039。s industry hydraulic billion yuan, accounting for the world39。 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)。 aerodynamic pieces of the total demand of about 5 million, with sales more than 700 million yuan。 (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 seller
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號-1