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單作用油缸方向控制回路的功用是什么？

單(dan)(dan)作用(yong)油(you)缸方(fang)(fang)(fang)向(xiang)(xiang)(xiang)(xiang)控(kong)(kong)(kong)(kong)制(zhi)回(hui)路也叫做換向(xiang)(xiang)(xiang)(xiang)回(hui)路，用(yong)各(ge)種(zhong)方(fang)(fang)(fang)向(xiang)(xiang)(xiang)(xiang)控(kong)(kong)(kong)(kong)制(zhi)閥(fa)來(lai)改變壓縮氣體的(de)流動(dong)(dong)方(fang)(fang)(fang)向(xiang)(xiang)(xiang)(xiang)，從而改變氣動(dong)(dong)執行元(yuan)件的(de)運動(dong)(dong)方(fang)(fang)(fang)向(xiang)(xiang)(xiang)(xiang)。方(fang)(fang)(fang)向(xiang)(xiang)(xiang)(xiang)控(kong)(kong)(kong)(kong)制(zhi)閥(fa)按其(qi)(qi)通(tong)(tong)路數來(lai)分(fen)，有二通(tong)(tong)、三通(tong)(tong)閥(fa)以及四通(tong)(tong)、五(wu)通(tong)(tong)閥(fa)等，按其(qi)(qi)控(kong)(kong)(kong)(kong)制(zhi)方(fang)(fang)(fang)式又有氣控(kong)(kong)(kong)(kong)、機動(dong)(dong)、電磁(ci)、手動(dong)(dong)等。用(yong)這些方(fang)(fang)(fang)向(xiang)(xiang)(xiang)(xiang)控(kong)(kong)(kong)(kong)制(zhi)閥(fa)可以形成單(dan)(dan)作用(yong)氣缸、雙作用(yong)氣缸以及氣動(dong)(dong)馬(ma)達的(de)各(ge)種(zhong)換向(xiang)(xiang)(xiang)(xiang)回(hui)路。

單作用油缸換向回路的構成和特點有哪些呢？

1.手(shou)動(dong)閥控制換向回路

采(cai)用(yong)手(shou)(shou)控(kong)二位(wei)(wei)三(san)通(tong)(tong)閥(fa)(fa)(fa)控(kong)制的(de)單作用(yong)氣(qi)缸換向(xiang)回(hui)(hui)路，這樣的(de)方法適用(yong)于氣(qi)缸缸徑較小(xiao)的(de)場(chang)合。為采(cai)用(yong)彈簧復位(wei)(wei)式(shi)手(shou)(shou)控(kong)二位(wei)(wei)三(san)通(tong)(tong)換向(xiang)閥(fa)(fa)(fa)的(de)換向(xiang)回(hui)(hui)路；當按下(xia)按鈕(niu)(niu)后閥(fa)(fa)(fa)進(jin)(jin)行切換，活(huo)塞桿伸出；松(song)開按鈕(niu)(niu)后閥(fa)(fa)(fa)復位(wei)(wei)，氣(qi)缸活(huo)塞桿靠彈簧力返回(hui)(hui)。用(yong)帶定(ding)位(wei)(wei)機(ji)(ji)構手(shou)(shou)控(kong)二位(wei)(wei)三(san)通(tong)(tong)換向(xiang)閥(fa)(fa)(fa)的(de)換向(xiang)回(hui)(hui)路，按下(xia)按鈕(niu)(niu)后活(huo)塞桿伸出；松(song)開按鈕(niu)(niu)，因閥(fa)(fa)(fa)有定(ding)位(wei)(wei)機(ji)(ji)構而保持原位(wei)(wei)，活(huo)塞桿仍(reng)保持伸出狀(zhuang)態(tai)，只有把(ba)按鈕(niu)(niu)上拔時，二位(wei)(wei)三(san)通(tong)(tong)閥(fa)(fa)(fa)才能換向(xiang)，氣(qi)缸進(jin)(jin)行排氣(qi)，活(huo)塞桿返回(hui)(hui)。

2.電磁(ci)閥(fa)控制換向回路(lu)

當電(dian)磁(ci)鐵(tie)得電(dian)時(shi)，氣壓使活塞伸出工作，而電(dian)磁(ci)鐵(tie)失電(dian)時(shi)，活塞桿在彈簧作用(yong)下縮回。在回路中，電(dian)磁(ci)鐵(tie)失電(dian)后能(neng)(neng)自動復位，故能(neng)(neng)使氣缸停留在行(xing)程中任意位置(zhi)。  

雙作用油缸換向回路有何特點？

雙(shuang)氣(qi)控(kong)二位(wei)五通閥(fa)和雙(shuang)氣(qi)控(kong)中(zhong)位(wei)封閉式三位(wei)五通閥(fa)的(de)控(kong)制(zhi)(zhi)回(hui)(hui)(hui)路(lu)(lu),在回(hui)(hui)(hui)路(lu)(lu)中(zhong)通過對換向閥(fa)左(zuo)右兩側(ce)分(fen)別輸入控(kong)制(zhi)(zhi)信號,使氣(qi)缸活(huo)塞桿(gan)伸出和縮回(hui)(hui)(hui).這樣的(de)回(hui)(hui)(hui)路(lu)(lu)不許左(zuo)右兩側(ce)同(tong)時加等壓(ya)控(kong)制(zhi)(zhi)信號.除控(kong)制(zhi)(zhi)雙(shuang)作用油缸換向外,還可(ke)在行(xing)程中(zhong)的(de)任意位(wei)置停止運(yun)動。