力士樂Rexroth六角聯軸器3842218920
- 型 號:
- 價(jia) 格:¥320
力士樂Rexroth六角聯軸器3842218920滾珠(zhu)導軌(gui)導向系統(tong)(滑(hua)塊、導軌(gui)、滾珠(zhu)、絲杠),輸(shu)送系統(tong)(輸(shu)送機、擋停器(qi)、分離器(qi)、阻尼器(qi)、搖桿(gan)),手工(gong)生產系統(tong)(卡裝(zhuang)式容器(qi)、旋(xuan)轉升(sheng)降裝(zhuang)置),識(shi)別系統(tong)(通(tong)信(xin)模塊、天(tian)線、傳感器(qi)、移動(dong)數據載(zai)體(ti))
力士樂Rexroth六角聯軸器3842218920
1.油液(ye)中水(shui)分進入的途徑
(1)油箱蓋(gai)因冷熱(re)交(jiao)替而使(shi)空(kong)氣中的水(shui)分凝結(jie)成(cheng)水(shui)珠落(luo)人(ren)油中。
(2)冷卻(que)器或(huo)熱交換(huan)器密封損壞或(huo)冷卻(que)管破(po)裂使水漏人油中。
(3)通過液壓(ya)缸活塞桿(gan)密(mi)封不(bu)嚴密(mi)處進入(ru)系(xi)統的潮濕(shi)
1.油液中水分進(jin)入(ru)的(de)途徑(jing)
(1)油箱蓋因冷熱交替(ti)而使空氣中的水(shui)分凝結成水(shui)珠落人油中。
(2)冷(leng)(leng)卻(que)器(qi)(qi)或熱交(jiao)換器(qi)(qi)密封(feng)損(sun)壞或冷(leng)(leng)卻(que)管(guan)破裂使水漏人油中。
(3)通過(guo)液壓缸活塞桿密(mi)封不嚴密(mi)處進入系統的(de)潮濕空氣凝聚成水珠。
(4)用油時(shi)帶人的(de)水分以及油液暴露于潮濕(shi)環境中與(yu)水發生(sheng)親合作用而吸收(shou)的(de)水。
2.油(you)液中混入(ru)水分后(hou)的(de)危(wei)害
(1)油(you)液中混入一定量的(de)(de)水分后,會(hui)使(shi)液壓油(you)乳(ru)(ru)化呈白濁(zhuo)狀態(tai)。如果液壓油(you)本身(shen)的(de)(de)抗乳(ru)(ru)化能(neng)力較差(cha),靜止一段時間后,水分也不能(neng)與油(you)分離,使(shi)油(you)總處于白濁(zhuo)狀態(tai)。這種白濁(zhuo)的(de)(de)乳(ru)(ru)化油(you)進入液壓系統內(nei)部(bu),不僅使(shi)液壓閥的(de)(de)元(yuan)件(jian)內(nei)部(bu)生銹(xiu),同時降低(di)其潤滑性(xing)能(neng),使(shi)零件(jian)的(de)(de)磨損加劇,系統的(de)(de)效率降低(di)。
(2)液壓(ya)系(xi)統內(nei)的(de)鐵系(xi)金屬(shu)生銹(xiu)后,剝(bo)落(luo)的(de)鐵銹(xiu)在液壓(ya)系(xi)統管(guan)道和液壓(ya)元(yuan)件內(nei)流動,蔓(man)延擴散(san)下(xia)去,將導致整(zheng)個(ge)系(xi)統內(nei)部生銹(xiu),產(chan)生更多的(de)剝(bo)落(luo)鐵銹(xiu)和氧化物。
(3)水還(huan)會與油中(zhong)的某些添加劑作用產生沉淀和膠質等污染物,加速油的惡化。
(4)水與油(you)(you)中的(de)硫和氯作用產生(sheng)硫酸和鹽酸,使元件的(de)磨(mo)蝕(shi)磨(mo)損加劇,也加速油(you)(you)液的(de)氧化變質,甚至產生(sheng)很多(duo)油(you)(you)泥。
(5這些(xie)水污染物和氧化(hua)生成物,隨即成為(wei)進一(yi)步氧化(hua)的(de)催化(hua)劑,最終導(dao)致液(ye)壓元件堵塞或卡死,引起液(ye)壓閥(fa)系(xi)統動作(zuo)失靈、配油管堵塞、冷卻(que)器效率降低以(yi)及(ji)濾油器堵塞等一(yi)系(xi)列故障。
(6)另(ling)外(wai),在低溫時(shi),水凝結成微小冰粒,也(ye)容易堵塞控制元件的間隙和死口。
力士樂Rexroth六角聯軸器3842218920
液壓傳動的定義
液(ye)(ye)壓傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)是指(zhi)以液(ye)(ye)體(ti)為(wei)工作(zuo)介質(zhi)進(jin)行能(neng)(neng)量(liang)傳(chuan)(chuan)遞和(he)控(kong)制(zhi)的(de)(de)一(yi)種傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)方(fang)式。在液(ye)(ye)體(ti)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)中,根據其能(neng)(neng)量(liang)傳(chuan)(chuan)遞形式不同,又分為(wei)液(ye)(ye)力(li)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)和(he)液(ye)(ye)壓傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)。液(ye)(ye)力(li)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)主要是利用(yong)(yong)液(ye)(ye)體(ti)動(dong)(dong)(dong)(dong)(dong)能(neng)(neng)進(jin)行能(neng)(neng)量(liang)轉換(huan)的(de)(de)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)方(fang)式,如液(ye)(ye)力(li)耦合器和(he)液(ye)(ye)力(li)變矩器。液(ye)(ye)壓傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)是利用(yong)(yong)液(ye)(ye)體(ti)壓力(li)能(neng)(neng)進(jin)行能(neng)(neng)量(liang)轉換(huan)的(de)(de)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)方(fang)式。在機械上采(cai)用(yong)(yong)液(ye)(ye)壓傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)技術,可(ke)以簡化機器的(de)(de)結構,減(jian)輕(qing)機器質(zhi)量(liang),減(jian)少材料消耗,降低(di)制(zhi)造成(cheng)本,減(jian)輕(qing)勞(lao)動(dong)(dong)(dong)(dong)(dong)強度,提高工作(zuo)效率和(he)工作(zuo)的(de)(de)可(ke)靠性。
液壓傳動(dong)的綜合應用領域
液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)傳動(dong)(dong)相對機(ji)(ji)械(xie)傳動(dong)(dong)來說,是一門新技(ji)(ji)術(shu)。自十(shi)七(qi)世(shi)紀中葉帕斯卡提出靜壓(ya)(ya)(ya)(ya)(ya)原(yuan)理,液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)傳動(dong)(dong)已有三百多(duo)年歷史。然而液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)傳動(dong)(dong)的(de)(de)推(tui)廣使(shi)(shi)用(yong)只是近五、六十(shi)年的(de)(de)事。直到(dao)本世(shi)紀三十(shi)年代(dai)液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)傳動(dong)(dong)才開始應用(yong)到(dao)普通機(ji)(ji)床(chuang)上(shang)(shang)。第二(er)次世(shi)界大戰期間,由于(yu)(yu)(yu)兵器的(de)(de)戰術(shu)技(ji)(ji)術(shu)要求,推(tui)動(dong)(dong)了反(fan)應快、動(dong)(dong)作準、功率大的(de)(de)液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)傳動(dong)(dong)裝置的(de)(de)發(fa)展。戰后,液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)技(ji)(ji)術(shu)迅速轉向民用(yong),在機(ji)(ji)床(chuang)、工(gong)程(cheng)(cheng)機(ji)(ji)械(xie)、農業(ye)機(ji)(ji)械(xie)、汽車等(deng)行(xing)業(ye)中逐步(bu)推(tui)廣。本世(shi)紀六十(shi)年代(dai)以后,隨著(zhu)原(yuan)子(zi)能技(ji)(ji)術(shu)、空(kong)間技(ji)(ji)術(shu)、計(ji)算機(ji)(ji)技(ji)(ji)術(shu)等(deng)的(de)(de)發(fa)展,至今它已應用(yong)國民經濟的(de)(de)各(ge)個(ge)領域(yu)中去。我國的(de)(de)液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)工(gong)業(ye)始于(yu)(yu)(yu)上(shang)(shang)個(ge)世(shi)紀五十(shi)年代(dai),其產品(pin)(pin)最初應用(yong)于(yu)(yu)(yu)機(ji)(ji)床(chuang)和(he)鍛壓(ya)(ya)(ya)(ya)(ya)設備上(shang)(shang),后來又用(yong)于(yu)(yu)(yu)拖拉機(ji)(ji)和(he)工(gong)程(cheng)(cheng)機(ji)(ji)械(xie)。自從國外引進一些(xie)液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)元件(jian)生產技(ji)(ji)術(shu),同時進行(xing)自行(xing)設計(ji)液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)產品(pin)(pin)以來,我國的(de)(de)液(ye)(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)(ya)元件(jian)已從低壓(ya)(ya)(ya)(ya)(ya)到(dao)高壓(ya)(ya)(ya)(ya)(ya)形成了系(xi)統列(lie),并在各(ge)種(zhong)機(ji)(ji)械(xie)上(shang)(shang)設備上(shang)(shang)得到(dao)了廣泛的(de)(de)使(shi)(shi)用(yong)。
(1)一般工業(ye)用液壓(ya)(ya)系統(tong)塑(su)料加工機(ji)械(注塑(su)機(ji))、壓(ya)(ya)力機(ji)械(鍛(duan)壓(ya)(ya)機(ji))、重型機(ji)械(廢(fei)鋼(gang)壓(ya)(ya)塊機(ji))、機(ji)床(chuang)(全自(zi)動(dong)六角車(che)床(chuang)、平面磨床(chuang))等;
(2)行走(zou)機(ji)(ji)械(xie)用液壓系統工(gong)程(cheng)機(ji)(ji)械(xie)(挖掘(jue)機(ji)(ji))、起重機(ji)(ji)械(xie)(汽車(che)(che)吊)、建筑(zhu)機(ji)(ji)械(xie)(打樁機(ji)(ji))、農業機(ji)(ji)械(xie)(聯合收割機(ji)(ji))、汽車(che)(che)(轉(zhuan)向器、減(jian)振器)等;
(3)鋼鐵工業用液壓(ya)系統 冶金機械(軋鋼機)、提(ti)升(sheng)裝置(zhi)(升(sheng)降機)、軋輥調整裝置(zhi)等;
(4)土木(mu)工程用液壓(ya)系統 防(fang)(fang)洪閘門及(ji)堤壩裝置(浪(lang)潮防(fang)(fang)護擋(dang)板)、河床(chuang)升降裝置、橋梁操(cao)縱(zong)機構和(he)礦山機械(xie)(鑿巖機)等;
(5)發電廠(chang)用液壓系(xi)統渦(wo)輪機(調(diao)速裝置)等;
(6)特殊技術用液壓系(xi)統(tong) 巨型(xing)天線控(kong)制裝置、測量浮標、飛機起(qi)落架(jia)的收放裝置及方向舵控(kong)制裝置、升降旋轉舞臺等;
(7)船(chuan)(chuan)舶用液壓(ya)系統(tong) 甲(jia)板起重機械(絞車)、船(chuan)(chuan)頭(tou)門、艙壁閥、船(chuan)(chuan)尾推進器等;
(8)軍事(shi)工業用液壓(ya)系統火炮操(cao)縱裝置、艦(jian)船減搖裝置、飛行器仿真(zhen)等。
3842547516
3842538947
3842218921
3842544528
3842548817
3842500287 3000MM
3842551045
3842513581
3842544529
3842544527
3842516165
3842555568
3842218953
3842548753
3842525766
3842554720
3842528806
3842551227
3842528967
3842529300
3842529298
3842553613 96米
3842554315
3842174304
3842544748
3842992517 3080mm
3842992517 3680mm
3842992517 3865mm
3842558795
3842528807
3842559001
3842564563
3842547521
3842546125
3842998052 CS:240*18 M/MIN*400
3842563321
3842305210
3842519006
3842992811 L=200M
3842218920
3842545908
3842536270
3842525857
3842521219
3842554926
3842544623
3842538940
3842538941
3842519001
3842541567
3842532334
3842999903 BQ=320MM; BL=320MM; AO=1; PN=2; VN=18M/MIN; U=400V; F=50HZ; AT=K
3842525804
3842548127
3842518351
3842555276
3842529386
3842535642
3842544531
3842538607
3842543404
3842554450
3842543401
3842546564
3842191175
3842992517 L=340mm
3842994835
3842551226 L12
3842998010 B=120MM; PN=3; U=400V; F=50HZ; VN=9M/MIN; AT=K
3842503063
3842516833
3842993090 L=6M
3842993066 L=6M
3842994870 L=12M
3842530864
3842549717
3842503925
3842548644
3842524921
3842547995
3842536390
3842535706+3842535766
3842535705+3842535765
3842999728 LT=160MM:B=160MM:A=135MM:VN=15M/MIN:V=400V:F=50HZKR=L:MAS AT=K:MM=0°
3842992517 L=5245
3842528718
3842523580
3842548869
3842523575
3842530287
3842242400
3842548761
3842345081
3842526761
3842544628
3842516804
3842538409
3842520054
3842502030
3842549565-100
3842552645-60
3842548838
3842184738
3842528738
3842528735
3842998102 PE 1/P B=160MM | WT 1/P
3842538065
3842520025 L=5600mm整包的(de)號(hao),一包2根(gen)
3842518347
3842555274 單根2米
3842518347
3842555274 單根2米
3842530864 L=32米
3842562346
3842544845
3842516598
3842558570
3842554402
3842555574
3842555572
3842554450
3842529933
3842511715
3842549703
3842992679 L=240.. <450
3842523426 1=320.. <450; N=0
3842146972 L=240.. <2460
3842146972 L=2460.. <4760
3842146972 L=4760.. 6000
3842235484 D74X30 MA=R;L;B>=MA=M
3842557410 160<=B<240, MA=M
3842992650 L=60米
3842198340
3842305209
3842553618 L=380
3842553622 L= 1800
3842523537
3842553618 L=300
3842557215 L=1300
3842520078
3842554306
3842549868
3842242351
3842554312
3842523102
3842546981
3842532015
3842554294
3842536775
3842558795
3842992811 L=69M
3842538949
3842538943
3842546017 L=12M
3842531214 L=12M
3842531420 L=12M
3842533478 L=12M
3842999727-100 3842538940
3842999727-3010 3842541036
3842531355
3842557603
3842557709
3842524279
3842544531
3842536676
3842305211
3842994733 L=580
3842410063
3842551360
3842538942 1450
3842410117
3842537627
3842529731
3842532677
3842992679,L=6M 2000MM
3842538656
3842530864 L=12M
38425413203842563318
3842998101 B=120MM
3842992517 長度3780
3842410060
3842525733
3842174301
3842532675 L=6000mm 1包是16根,不拆包
液(ye)壓傳(chuan)動在日常生活(huo)中的應用
在(zai)我們生活(huo)中最常見(jian)的是(shi)液壓千斤頂、汽車(che)的轉向助力、挖(wa)掘機(ji)(ji)、飛(fei)機(ji)(ji)起落架的收放(fang)裝置及方(fang)向舵(duo)控制裝置、升降旋轉舞臺、船尾推進(jin)器等,這些都是(shi)都機(ji)(ji)械上的!你看見(jian)有液壓缸(gang)就(jiu)是(shi)液壓傳(chuan)動!
液(ye)壓傳動技術(shu)在(zai)礦井提升系統(tong)中的應用
TEl30型液壓站的主(zhu)要(yao)作用
(1)可以(yi)為(wei)盤形(xing)制動器提供(gong)不(bu)(bu)同(tong)油(you)壓值的(de)壓力油(you),以(yi)獲得不(bu)(bu)同(tong)的(de)制動力矩。
(2)在(zai)事(shi)故狀態(tai)下,可以(yi)使制動器的油壓迅(xun)速(su)降到(dao)預(yu)先調定(ding)的某一值,經過延時后,制動器的全(quan)部油壓迅(xun)速(su)回(hui)到(dao)零(ling),使制動器達到(dao)全(quan)制動狀態(tai)。
(3)TEl30型液壓(ya)站可以供給控制單繩(sheng)(sheng)雙筒礦井提升機調繩(sheng)(sheng)裝置(zhi)所需要的壓(ya)力油。
l、油(you)箱;2、網式(shi)過濾(lv)器(qi);3、電(dian)機;4、油(you)泵;5、紙質過濾(lv)器(qi);6、電(dian)液調壓(ya)(ya)裝(zhuang)置(zhi);7、電(dian)磁換(huan)(huan)向(xiang)閥(fa)(fa);8、溢流閥(fa)(fa);9、減壓(ya)(ya)閥(fa)(fa);10、單向(xiang)閥(fa)(fa);11、電(dian)磁換(huan)(huan)向(xiang)閥(fa)(fa);12、彈簧蓄(xu)力(li)器(qi);13、液動換(huan)(huan)向(xiang)閥(fa)(fa);14、壓(ya)(ya)力(li)表(biao)開關;15、壓(ya)(ya)力(li)表(biao);16、電(dian)磁換(huan)(huan)向(xiang)閥(fa)(fa);17、電(dian)磁換(huan)(huan)向(xiang)閥(fa)(fa);18、電(dian)磁換(huan)(huan)向(xiang)閥(fa)(fa);19、電(dian)接(jie)點壓(ya)(ya)力(li)式(shi)溫度計;2O、電(dian)接(jie)點壓(ya)(ya)力(li)表(biao);21、截止閥(fa)(fa)。
液(ye)壓站工作原(yuan)理介(jie)紹
為了(le)(le)確保提升(sheng)機(ji)的(de)(de)(de)正常工作,液(ye)壓(ya)(ya)(ya)(ya)站油(you)箱中間用鋼板隔開,相當(dang)于2個獨立油(you)箱,并帶有(you)2臺(tai)葉(xie)片(pian)(pian)泵(beng)裝置(zhi)(zhi),一臺(tai)工作、一臺(tai)備(bei)用。二泵(beng)替換(huan)工作時,同(tong)液(ye)動換(huan)向閥(fa)13自(zi)動換(huan)向,2臺(tai)葉(xie)片(pian)(pian)泵(beng)裝置(zhi)(zhi)放在油(you)箱側(ce)面(mian)地(di)面(mian)上(shang),便于維修。安全制(zhi)(zhi)動部(bu)分由(you)電磁(ci)(ci)閥(fa)G3、G4、G5、G6,減(jian)壓(ya)(ya)(ya)(ya)閥(fa)9、溢(yi)流閥(fa)8、蓄力(li)器12等件組成。對單繩雙筒提升(sheng)機(ji)來說又(you)在此基礎上(shang)增加了(le)(le)電磁(ci)(ci)閥(fa)18(G1、G2)以供詞繩使用,液(ye)壓(ya)(ya)(ya)(ya)站為盤形(xing)制(zhi)(zhi)動器提供了(le)(le)不同(tong)油(you)壓(ya)(ya)(ya)(ya)的(de)(de)(de)油(you),油(you)壓(ya)(ya)(ya)(ya)的(de)(de)(de)變化,由(you)電液(ye)調(diao)壓(ya)(ya)(ya)(ya)裝置(zhi)(zhi)b來調(diao)節,這(zhe)時安全制(zhi)(zhi)動部(bu)分的(de)(de)(de)電磁(ci)(ci)閥(fa)G3、G4、G5帶電,油(you)路(lu)通(tong),壓(ya)(ya)(ya)(ya)力(li)油(you)通(tong)過管路(lu)分別進入盤形(xing)制(zhi)(zhi)動器。油(you)壓(ya)(ya)(ya)(ya)的(de)(de)(de)變化,通(tong)過提升(sheng)機(ji)司機(ji)控制(zhi)(zhi)電液(ye)調(diao)壓(ya)(ya)(ya)(ya)裝置(zhi)(zhi)的(de)(de)(de)電流大小來實現,從而(er)達到調(diao)節制(zhi)(zhi)動力(li)矩(ju)的(de)(de)(de)目(mu)的(de)(de)(de)。
2.3液壓(ya)(ya)站的安全制(zhi)(zhi)動(dong)(dong)(dong)(dong)中的原理應用系(xi)(xi)統正常(chang)]_作時(shi)(shi),電(dian)(dian)(dian)(dian)磁(ci)鐵G3、G4、G5通電(dian)(dian)(dian)(dian),G1、G2、G6斷電(dian)(dian)(dian)(dian),壓(ya)(ya)力油(you)(you)(you)通過(guo)電(dian)(dian)(dian)(dian)磁(ci)閥11、17分別進入制(zhi)(zhi)動(dong)(dong)(dong)(dong)器(qi)(qi),開閘,保(bao)證(zheng)提升(sheng)機正常(chang)運(yun)轉(zhuan)。同時(shi)(shi)壓(ya)(ya)力油(you)(you)(you)經(jing)過(guo)減壓(ya)(ya)閥9、單向閥10進入彈簧儲(chu)力器(qi)(qi)l2,達到(dao)某(mou)一級(ji)制(zhi)(zhi)動(dong)(dong)(dong)(dong)油(you)(you)(you)壓(ya)(ya)Pl級(ji),當提升(sheng)機實現安全制(zhi)(zhi)動(dong)(dong)(dong)(dong)時(shi)(shi)(其(qi)中包括全礦停電(dian)(dian)(dian)(dian))電(dian)(dian)(dian)(dian)機3斷電(dian)(dian)(dian)(dian),油(you)(you)(you)泵(beng)停止供(gong)油(you)(you)(you),電(dian)(dian)(dian)(dian)磁(ci)鐵G3、G4斷電(dian)(dian)(dian)(dian)。TEl30型液壓(ya)(ya)站固定卷筒制(zhi)(zhi)動(dong)(dong)(dong)(dong)器(qi)(qi)的壓(ya)(ya)力油(you)(you)(you)迅(xun)速回油(you)(you)(you)箱,油(you)(you)(you)壓(ya)(ya)降(jiang)到(dao)零。TEl30游動(dong)(dong)(dong)(dong)卷筒制(zhi)(zhi)動(dong)(dong)(dong)(dong)器(qi)(qi)的壓(ya)(ya)力油(you)(you)(you)經(jing)電(dian)(dian)(dian)(dian)磁(ci)閥l1,一部(bu)分壓(ya)(ya)力油(you)(you)(you)流到(dao)彈簧儲(chu)力器(qi)(qi)12內,另一部(bu)分由溢流閥8流回油(you)(you)(you)箱,使這(zhe)局部(bu)系(xi)(xi)統內油(you)(you)(you)壓(ya)(ya)值,保(bao)持一級(ji)制(zhi)(zhi)動(dong)(dong)(dong)(dong)油(you)(you)(you)壓(ya)(ya)值P1級(ji),再經(jing)過(guo)延(yan)時(shi)(shi)繼電(dian)(dian)(dian)(dian)器(qi)(qi)延(yan)時(shi)(shi),電(dian)(dian)(dian)(dian)磁(ci)鐵G5延(yan)時(shi)(shi)斷電(dian)(dian)(dian)(dian),G6延(yan)時(shi)(shi)通電(dian)(dian)(dian)(dian),使油(you)(you)(you)壓(ya)(ya)迅(xun)速降(jiang)到(dao)零,達到(dao)全制(zhi)(zhi)動(dong)(dong)(dong)(dong)狀態。
液壓(ya)傳動在機(ji)械中詳細的應用
驅動機械(xie)運動的(de)機構以及各(ge)種(zhong)傳動和操縱(zong)裝置有(you)多種(zhong)形式。根據所用(yong)的(de)部件和零件,可分為機械(xie)的(de)、電氣的(de)、氣動的(de)、液壓(ya)(ya)的(de)傳動裝置。經(jing)常還將(jiang)不(bu)同的(de)形式組合起(qi)來運用(yong)——四位一體。由于液壓(ya)(ya)傳動具有(you)很(hen)多優點(dian),使這(zhe)種(zhong)新技術發展得(de)很(hen)快。液壓(ya)(ya)傳動應用(yong)于金屬(shu)切削機床也(ye)不(bu)過四五十(shi)年的(de)歷史(shi)。航(hang)空(kong)工(gong)業在1930年以后才開始采用(yong)。特別是(shi)最近(jin)二(er)三(san)十(shi)年以來液壓(ya)(ya)技術在各(ge)種(zhong)工(gong)業中的(de)應用(yong)越來越廣泛。
在(zai)(zai)機床上(shang),液壓傳動(dong)常應用在(zai)(zai)以下的一(yi)些裝置(zhi)中:
1.進給(gei)(gei)運(yun)動(dong)(dong)(dong)(dong)傳(chuan)動(dong)(dong)(dong)(dong)裝置磨床(chuang)砂(sha)輪架(jia)和工(gong)作(zuo)臺的(de)(de)(de)進給(gei)(gei)運(yun)動(dong)(dong)(dong)(dong)大部分(fen)采用液壓(ya)傳(chuan)動(dong)(dong)(dong)(dong);車(che)床(chuang)、六角車(che)床(chuang)、自動(dong)(dong)(dong)(dong)車(che)床(chuang)的(de)(de)(de)刀(dao)架(jia)或轉塔刀(dao)架(jia);銑(xian)床(chuang)、刨床(chuang)、組(zu)合機床(chuang)的(de)(de)(de)工(gong)作(zuo)臺等的(de)(de)(de)進給(gei)(gei)運(yun)動(dong)(dong)(dong)(dong)也(ye)都(dou)采用液壓(ya)傳(chuan)動(dong)(dong)(dong)(dong)。這些(xie)部件(jian)有(you)(you)的(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)快速(su)移(yi)動(dong)(dong)(dong)(dong),有(you)(you)的(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)慢(man)速(su)移(yi)動(dong)(dong)(dong)(dong)。有(you)(you)的(de)(de)(de)則既要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)快速(su)移(yi)動(dong)(dong)(dong)(dong),也(ye)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)慢(man)速(su)移(yi)動(dong)(dong)(dong)(dong)。這些(xie)運(yun)動(dong)(dong)(dong)(dong)多半要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)有(you)(you)較大的(de)(de)(de)調速(su)范圍,要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)在(zai)工(gong)作(zuo)中無級(ji)調速(su);有(you)(you)的(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)持(chi)續進給(gei)(gei),有(you)(you)的(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)間歇進給(gei)(gei);有(you)(you)的(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)在(zai)負載變化(hua)下(xia)速(su)度恒(heng)定,有(you)(you)的(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)有(you)(you)良好的(de)(de)(de)換向性(xing)能(neng)等等。所有(you)(you)這些(xie)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)都(dou)是可以用液壓(ya)傳(chuan)動(dong)(dong)(dong)(dong)來(lai)實現的(de)(de)(de)。
2.往復(fu)主體運(yun)動傳動裝置龍門(men)刨(bao)床的工作臺、牛頭(tou)刨(bao)床或插床的滑枕,由于要求作高速往復(fu)直線(xian)運(yun)動,并且要求換(huan)向(xiang)沖擊小、換(huan)向(xiang)時間短、能耗低,因(yin)此都可以采用液(ye)壓傳動。
3.仿形(xing)裝(zhuang)置(zhi)車床、銑床、刨床上的仿形(xing)加(jia)工可以采(cai)用(yong)液壓伺服系(xi)統來完(wan)成(cheng)。 其精度(du)可達(da)0.01~0.02mm。此外,磨床上的成(cheng)形(xing)砂輪修(xiu)正裝(zhuang)置(zhi)亦可采(cai)用(yong)這種系(xi)統。
4.輔助裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)機(ji)床(chuang)上的夾緊裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)、齒輪箱變(bian)速操(cao)縱(zong)裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)、絲桿螺母間(jian)隙消除裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)、垂直移(yi)動部(bu)件平衡(heng)裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)、分度裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)、工(gong)件和刀(dao)具(ju)裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)卸裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)、工(gong)件輸送裝(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)(zhi)等(deng),采用液壓傳動后,有利于簡化(hua)機(ji)床(chuang)結構(gou),提高(gao)機(ji)床(chuang)自動化(hua)程度。
5.靜壓(ya)(ya)支承重型機(ji)床(chuang)、高速機(ji)床(chuang)、高精(jing)度機(ji)床(chuang)上(shang)的軸承、導軌(gui)、絲杠螺母機(ji)構等(deng)處采用液體靜壓(ya)(ya)支承后,可以提高工作平穩性(xing)和(he)運動(dong)精(jing)度。