液壓傳動-利用液壓實現(xiàn)運動和動力傳動-利用氣壓實現(xiàn)運動 動力傳動方式 開發(fā)研究的第1階段:17世紀帕斯卡制定了液壓傳動的靜壓傳動原理1795年,世界上第一臺液壓機誕生,已有200多年的歷史但由于液壓傳動技術(shù)和液壓元件不成熟,工藝制造水平低,發(fā)展緩慢,幾乎停滯不前。
早在公元前,埃及人就嘗試用風箱帶來壓縮空氣系統(tǒng)引燃從18世紀產(chǎn)業(yè) 革命開始,逐漸應用于各類行業(yè)中 第二階段:上世紀30年代,由于工藝制造水平提高,開始生產(chǎn)液壓元件,并首先應用于機床 第三階段:上世紀50.60.20世紀70年代,工藝水平大大提高,液壓氣動技液壓泵術(shù)發(fā)展迅速,滲透到國民經(jīng)濟的各個領(lǐng)域:從藍天到水下,從軍事到民用,從重工業(yè)到輕工業(yè),到處都有流體傳動和控制技術(shù)。
舉例應用如:火炮跟蹤、飛機和導彈的動、炮塔穩(wěn)定、海底石油探測平臺固定、煤礦礦井支承、礦山用的風鉆、火車的剎車裝置、液壓裝載、起重、挖掘、軋鋼機組、數(shù)控機床、多工位組合機床、全自動液壓車床、液壓機械手等。
中國的液壓和氣動技術(shù)自20世紀60年代以來發(fā)展迅速新產(chǎn)品的開發(fā)和開發(fā)與先進國家一樣好,但其發(fā)展速度遠遠落后于同期的日本主要原因是工藝制造水平跟不上,制造難度大,材料性能無法滿足 設(shè)計需要,影響了我國流體傳動技術(shù)的發(fā)展。
希望在坐各位能用自己所學為我國的流體傳動技術(shù)作出應有液壓泵的貢獻簡而言之,流體技術(shù)+電氣控制就像一只插上翅膀的老虎它把一個人和一把刀變成一把無人的刀,把復雜的過程變成一個簡單的過程現(xiàn)在,再加上計算機控制,它將進入一個新的歷史階段。
液壓傳動的工作原理 特點 (1)用具有一定壓力的流體來傳動 (2)傳動過程中必須經(jīng)過兩次能量轉(zhuǎn)換 (3)傳動必須在密封容器內(nèi)進行,而且容積要發(fā)生變化液壓系統(tǒng)的組成和作用 1.動力裝置—液壓泵將電動機發(fā)送的機械能配置轉(zhuǎn)變成流體或氣體的壓力能。
2.執(zhí)行裝置—液壓缸(或馬達)將流體壓力能轉(zhuǎn)換為機械能,而對負載作功 3.控制調(diào)節(jié)配置-控制液壓泵流體方向、壓力和流量的各種液壓控制閥,以確保執(zhí)行部件完成預期的任務 4.輔助配置—油箱、油管、濾油器、壓力表、冷卻器、分水濾水器、油霧器、消聲器、管件、管接頭和種信號轉(zhuǎn)換器等,創(chuàng)造必要條件,保證系統(tǒng)正常工作。
5.工作介質(zhì)-液壓油或壓縮空氣系統(tǒng)動和動力的載體 液壓傳動的優(yōu)點:獨特之處—力大無窮(P=32MP以上) 如:所拿液壓千斤頂,可頂起1.6噸重物,若每位男同學體重為128斤,可舉起25位男同學 液壓傳動的缺點: 1.不宜遠距離傳遞 2.泄漏嚴重,不宜保證嚴格的傳動比 3.污染地面液壓泵 4.對T變化敏感 5.難于檢查故障 90-L-055-KA-5-BC-60-S-3-S1-C-03-GBA-35-35-24 90L055KA5BC60S3S1C03GBA353524 90-L-055-KA-5-BC-60-S-3-S1-C-03-GBA-42-42-24 90L055KA5BC60S3S1C03GBA424224 90-L-055-KA-5-BC-60-S-3-S1-C-06-GBA-42-42-24 90L055KA5BC60S3S1C06GBA424224 90L055-K液壓泵A-5-BC-60-S-4-C6-C-03-GBA-23-23-24 90L055KA5BC60S4C6C03GBA232324 90-L-055-KA-5-BC-60-S-4-C6-C-03-GBA-23-23-24 90L055KA5BC60S4C6C03GBA232324 90-L-055-KA-5-BC-60-S-4-C6-C-03-GBA-35-35-24 90L055KA5BC60S4C6C03GBA353524 90-L-055-KA-5-BC-60-S-4-C6-C-06-GBA-35-35-24 90L055KA5BC60S4C液壓泵6C06GBA353524 90-L-055-KA-5-BC-80-D-3-S1-L-03-GBA-35-35-24 90L055KA5BC80D3S1L03GBA353524 90-L-055-KA-5-BC-80-P-3-C6-C-00-GBA-35-35-24 90L055KA5BC80P3C6C00GBA353524 90-L-055-KA-5-BC-80-S-3-S1-C-03-GBA-35-35-24 90L055KA5BC80S3S1C03GBA353524 90-L-055-KA-5-CD-60-L-3-S1-C-液壓泵03-GBA-38-38-24 90L055KA5CD60L3S1C03GBA383824 90-L-055-KA-5-CD-60-L-3-S1-C-06-GBA-32-32-24 90L055KA5CD60L3S1C06GBA323224 90L055-KA-5-CD-60-P-3-C6-D-03-GBA-23-23-22 90L055KA5CD60P3C6D03GBA232322 90-L-055-KA-5-CD-60-P-3-C6-D-03-GBA-23-23-22 90L055KA5CD60P3C6D03GBA232322 液壓泵 90-L-055-KA-5-CD-60-P-3-C6-D-03-GBA-35-35-24 90L055KA5CD60P3C6D03GBA353524 90L055-KA-5-CD-60-P-3-S1-C-04-GBA-26-26-20 90L055KA5CD60P3S1C04GBA262620 90-L-055-KA-5-CD-60-P-3-S1-C-04-GBA-26-26-20 90L055KA5CD60P3S1C04GBA262620 90-L-055-KA-5-CD-60-R-3-C6-D-04-GBA-42-42-24 90L055K液壓泵A5CD60R3C6D04GBA424224 90-L-055-KA-5-CD-60-R-4-C6-C-05-GBA-35-35-24 90L055KA5CD60R4C6C05GBA353524 90-L-055-KA-5-CD-60-S-3-C6-C-03-GBA-29-29-24 90L055KA5CD60S3C6C03GBA292924 90-L-055-KA-5-CD-60-S-3-C6-C-04-GBA-35-35-24 90L055KA5CD60S3C6C04GBA353524 90-L-055-KA-5-CD-60-液壓泵S-3-C6-C-06-GBA-42-42-24 90L055KA5CD60S3C6C06GBA424224 90L055-KA-5-CD-60-S-3-C6-D-03-GBA-42-42-24 90L055KA5CD60S3C6D03GBA424224 90-L-055-KA-5-CD-60-S-3-C6-D-03-GBA-42-42-24 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90L055KA5NN80S3液壓泵S1C03GBA353524 90-L-055-KA-5-NN-80-S-3-S1-C-03-GBA-35-35-24 90L055KA5NN80S3S1C03GBA353524 90-L-055-KA-5-NN-80-S-3-S1-C-05-GBA-42-42-24 90L055KA5NN80S3S1C05GBA424224 90L055-KA-5-NN-80-S-3-S1-D-05-GBA-40-40-20 90L055KA5NN80S3S1D05GBA404020 90-L-055-KA-5-NN-80-S-3-S1-D-0液壓泵5-GBA-40-40-20 90L055KA5NN80S3S1D05GBA404020 90-L-055-KA-5-NN-80-S-4-S1-C-03-GBA-30-30-20 90L055KA5NN80S4S1C03GBA303020 90-L-055-KA-5-NN-80-S-4-S1-C-03-GBA-35-35-24 90L055KA5NN80S4S1C03GBA353524 90-L-055-KA-5-NN-80-S-4-S1-D-05-GBA-40-40-20 90L055KA5NN80S4S1D05GBA404020。