【機(jī)械類畢業(yè)論文中英文對(duì)照文獻(xiàn)翻譯】汽車舉升機(jī)液壓系統(tǒng)設(shè)計(jì),機(jī)械類畢業(yè)論文中英文對(duì)照文獻(xiàn)翻譯,機(jī)械類,畢業(yè)論文,中英文,對(duì)照,對(duì)比,比照,文獻(xiàn),翻譯,汽車,舉升機(jī),液壓,系統(tǒng),設(shè)計(jì) 黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) 附錄B Hydraulic System Design In recent years, China's booming auto industry, especially the car trip Industry. For many years into the average family car has become a dream now Real. Vehicle maintenance industry also received a strong development of the various repair The rapid expansion of demand for equipment. Vehicle repair workshop is required lift The most important maintenance machinery. Car lift would be required of the role i s the level of maintenance of vehicles To a suitable height, so that the maintenance workers in the automotive chassis Carry out maintenance on the car below. Car lift columnwillgenerally be divided into And two kinds of shear-type [1]. No matter what kind of demand from its two Side of the vehicle lifting the level of synchronization can not occur cornering. And the car at the end of Bottom plate must be empty, so as to facilitatemaintenance operations workers. This Car lift required on both sides of the lifting device must be isolated , And that increase or decrease on both sides and must be fully synchronized. By The weight of the vehicle are generally larger, together with its own lifting device Weight lifting force larger demands and requirements of the landing and taking off a very flat Stability, it is generally used auto lift hydraulic drive system Action. Is on the authors developed a hydraulic system into the car lift Line introduced. auto lift hydraulic system design requirements Automotive lift hydraulic system, in addition to the requirements in certain areas Insiders on both sides of the vehicle from the car lift and llsimultaneously, but also For their car can stop at any height and to maintain the fixed faTo Workers have different height, different locations in the maintenance can be arbitrary Adjust the height, the most convenient way to carry out repairs. Therefore, the hydraulic system will Required to maintain the functional position. In addition, due to the weight of larger vehicles, Once the hydraulic system fails, gravity lift in the car The role will rapidly decline, may be the next car maintenance workers Pose a threat to safety of life, lift the car above have been The risk of break. Therefore, in order to prevent this from happening, give Or machine must have a mechanical locking device. Mechanical locks were installed by .In lifting the fuel tank and the piston rod at the top of the lateral arm associated with the lifting of sales Axis composed of two serrated rack. Installed outside the fuel tank Fixed rack, and installed in the pin on the rack with the Pistons Poles moved around the pin and to a certain point of the swing to do in order to To achieve separation and the two mesh rack. When the lifting arm at a location Status or failure of the hydraulic system, oil pressure falls below a certain value, the Rack will move in its own gravity and the role of the spring force with static gear Article mating, mechanical lock locked, so that lift arm will not drop, so that To ensure that the repair works and the car will not be dangerous. 附錄D 汽車舉升機(jī)液壓系統(tǒng)設(shè)計(jì) 近年來，我國(guó)汽車業(yè)蓬勃發(fā)展,尤其是轎車行業(yè)。多年來轎車進(jìn)入普通家庭的夢(mèng)想已經(jīng)成為現(xiàn)實(shí)。汽車維修行業(yè)也隨之得到大力發(fā)展,各種維設(shè)備的需求迅速擴(kuò)大. 汽車舉升機(jī)是維修廠必備的,也是最重要的維修機(jī)械.汽車舉升機(jī)的作用是將需要維修的汽車水平 提升到合適的高度,以便于維修工人在汽車底盤方對(duì)汽車進(jìn)行維修. 汽車舉升機(jī)一般分為立柱式和剪式2種。盤下方必須為空的,以方便工人進(jìn)行維修作業(yè). 這就要求汽車舉升機(jī)兩側(cè)的舉升裝置必須是分離的,且兩側(cè)的上升或下降又必須是完全同步的. 由于汽車的重量一般都較大,再加上舉升裝置自身的重量,要求舉升力較大,而且升降時(shí)要求非常平 穩(wěn),所以汽車舉升機(jī)一般都采用液壓系統(tǒng)進(jìn)行驅(qū)動(dòng). 現(xiàn)就作者開發(fā)的一種汽車舉升機(jī)液壓系統(tǒng)進(jìn)行介紹. 汽車舉升機(jī)液壓系統(tǒng),除要求能在一定的范圍內(nèi)從汽車兩側(cè)將汽車同步舉升和下降外，還要求其能使汽車在任意高度停止并保持不動(dòng)。 以便不同身高的工人，在維修不同置時(shí)可以任意調(diào)整高度,最方便地進(jìn)行維修。因此,液壓系統(tǒng)必須具有定位保持功能。另外，因汽車的重量較大，一旦液壓系統(tǒng)出現(xiàn)故障，舉升機(jī)舉臂在汽車重力的作用下會(huì)迅速下滑，可能會(huì)對(duì)車下維修工人的生命安全造成威脅，舉升機(jī)上面的汽車也有被摔壞的危險(xiǎn)。所以,為了防止這樣的情況發(fā)生,舉升機(jī)必須具有機(jī)械鎖定裝置。機(jī)械鎖由分別安裝在舉升油缸外側(cè)和活塞桿頂部與舉升臂相聯(lián)的銷軸上的兩根鋸齒形齒條組成. 安裝在油缸外側(cè)的齒條固定不動(dòng),而安裝在銷軸上的齒條則隨活塞桿上下移動(dòng),并且能繞銷軸做一定角度的擺動(dòng),以實(shí)現(xiàn)兩根齒條的分離和嚙合. 當(dāng)舉升臂處于定位狀態(tài)或液壓系統(tǒng)出現(xiàn)故障、油壓低于一定數(shù)值的時(shí)候,動(dòng)齒條就會(huì)在自身重力和彈簧力的作用下與靜齒條嚙合,機(jī)械鎖鎖死,使舉升臂不會(huì)下滑,這樣就確保維修工人和汽車不會(huì)出現(xiàn)危險(xiǎn)。 4