巨(ju)友農用微型挖掘機的驅動特點

巨友農用(yong)微型(xing)挖掘機具有用(yong)于驅(qu)動(dong)(dong)(dong)液(ye)(ye)壓(ya)泵(beng)以產生器具所需(xu)液(ye)(ye)壓(ya)的(de)(de)馬(ma)(ma)達(da)。該(gai)馬(ma)(ma)達(da)也用(yong)于驅(qu)動(dong)(dong)(dong)通常(chang)由(you)靜液(ye)(ye)壓(ya)傳動(dong)(dong)(dong)裝置驅(qu)動(dong)(dong)(dong)的(de)(de)輪子。該(gai)傳動(dong)(dong)(dong)裝置包括排量(liang)可(ke)(ke)變的(de)(de)馬(ma)(ma)達(da)驅(qu)動(dong)(dong)(dong)的(de)(de)液(ye)(ye)壓(ya)泵(beng)，該(gai)液(ye)(ye)壓(ya)泵(beng)連接到(dao)通常(chang)排量(liang)恒定(ding)的(de)(de)驅(qu)動(dong)(dong)(dong)輪子的(de)(de)一個或(huo)多個液(ye)(ye)壓(ya)馬(ma)(ma)達(da)。可(ke)(ke)變排量(liang)泵(beng)的(de)(de)控制通過雙動(dong)(dong)(dong)滑閥實現(xian)，該(gai)雙動(dong)(dong)(dong)滑閥被彈(dan)簧偏置到(dao)中心(xin)位(wei)置中并連接到(dao)泵(beng)的(de)(de)斜盤上。

雙動(dong)滑閥具(ju)有被(bei)連接以(yi)接納處于先(xian)導壓(ya)力的(de)(de)(de)液壓(ya)流體的(de)(de)(de)一個工(gong)作室(shi)和被(bei)連接到(dao)通向貯液箱的(de)(de)(de)排(pai)放管(guan)路(lu)的(de)(de)(de)另一工(gong)作室(shi)，該先(xian)導壓(ya)力由發(fa)動(dong)機(ji)(ji)驅動(dong)的(de)(de)(de)泵產生(sheng)并因(yin)此隨發(fa)動(dong)機(ji)(ji)速度(du)變化。以(yi)這(zhe)種方式，傳動(dong)比隨發(fa)動(dong)機(ji)(ji)速度(du)自(zi)動(dong)變化，從而在低發(fa)動(dong)機(ji)(ji)速度(du)下提供高(gao)傳動(dong)比并隨馬達(da)速度(du)提供逐步降低的(de)(de)(de)傳動(dong)比。

巨(ju)友農(nong)用(yong)(yong)微型挖掘(jue)機(ji)，包括車輪、液(ye)(ye)壓(ya)操作的(de)作業器具、發(fa)動(dong)(dong)機(ji)、由(you)發(fa)動(dong)(dong)機(ji)驅動(dong)(dong)以產生(sheng)為器具提供(gong)(gong)動(dong)(dong)力的(de)加壓(ya)液(ye)(ye)壓(ya)流體的(de)泵、靜液(ye)(ye)壓(ya)傳(chuan)(chuan)動(dong)(dong)裝置、雙(shuang)動(dong)(dong)液(ye)(ye)壓(ya)滑(hua)閥、先(xian)(xian)導壓(ya)力泵和用(yong)(yong)于控制車輛速度的(de)操作者控制的(de)需求桿，靜液(ye)(ye)壓(ya)傳(chuan)(chuan)動(dong)(dong)裝置具有(you)可變(bian)排量(liang)的(de)液(ye)(ye)壓(ya)泵和連(lian)接到可變(bian)排量(liang)的(de)泵并(bing)用(yong)(yong)于驅動(dong)(dong)車輪的(de)液(ye)(ye)壓(ya)馬達，雙(shuang)動(dong)(dong)液(ye)(ye)壓(ya)滑(hua)閥被彈簧偏置到空檔(dang)位置以設置可變(bian)排量(liang)泵的(de)排量(liang)，先(xian)(xian)導壓(ya)力泵用(yong)(yong)于將隨發(fa)動(dong)(dong)機(ji)速度變(bian)化的(de)先(xian)(xian)導壓(ya)力供(gong)(gong)給(gei)到雙(shuang)動(dong)(dong)滑(hua)閥。

巨友農(nong)用微(wei)(wei)型(xing)挖掘機(ji)(ji)(ji)(ji)具有(you)常規操(cao)作模(mo)式(shi)，在(zai)(zai)該(gai)常規操(cao)作模(mo)式(shi)中(zhong)，需求桿用于(yu)改變(bian)發(fa)動(dong)機(ji)(ji)(ji)(ji)速(su)度，并且雙動(dong)滑(hua)閥(fa)(fa)接收取(qu)決(jue)于(yu)當(dang)前發(fa)動(dong)機(ji)(ji)(ji)(ji)速(su)度的先(xian)(xian)導壓力，從而設置取(qu)決(jue)于(yu)當(dang)前發(fa)動(dong)機(ji)(ji)(ji)(ji)速(su)度的靜(jing)液壓傳(chuan)動(dong)裝置的可變(bian)排量(liang)泵的排量(liang)，該(gai)農(nong)用微(wei)(wei)型(xing)挖掘機(ji)(ji)(ji)(ji)具有(you)爬行(xing)操(cao)作模(mo)式(shi)，在(zai)(zai)該(gai)爬行(xing)操(cao)作模(mo)式(shi)中(zhong)，發(fa)動(dong)機(ji)(ji)(ji)(ji)在(zai)(zai)不是(shi)由需求桿設置的恒定速(su)度下運(yun)轉，該(gai)需求桿用于(yu)改變(bian)由先(xian)(xian)導壓力泵供(gong)給到(dao)雙動(dong)滑(hua)閥(fa)(fa)的先(xian)(xian)導壓力，以通過僅(jin)改變(bian)靜(jing)液壓傳(chuan)動(dong)裝置的傳(chuan)動(dong)比而改變(bian)農(nong)用微(wei)(wei)型(xing)挖掘機(ji)(ji)(ji)(ji)的速(su)度。