?DBDH6P1X/400

武穴黎翔機電設備有限公司，詢價聯(lián)系人：何女士

詢價電話：0713-6542758，手機：18934630908????

詢價傳真：0713-6542758

詢價QQ:?736567721,704552157

現(xiàn)貨特價型號：R900925687?4WRAE10W1-30-22/G24N9K31/F1V??2臺

0811402141?DBETBEX-1X/315G24K31F1M?????2臺

泵的工作壓力愈高,偏心量就愈小,泵的輸出流量也就愈小,控制定子移動的作用力是將液壓泵出口的壓??力油引到柱塞上,然后再加到定子上去,這種控制方式稱為外反饋式。?2.限壓式變量葉片泵的特性曲線??限壓式變量葉片泵在工作過程中,當工作壓力p小于預先調定的限定壓力pc時,液壓作用力不能克服彈簧??的預緊力,這時定子的偏心距保持最大不變,因此泵的輸出流量qA不變,但由于供油壓力增大時,泵的泄漏流??量pl也增加,所以泵的實際輸出流量q也略有減少,如圖2-9。限壓式變量葉片泵的特性曲線中的AB段所示。調??節(jié)流量調節(jié)螺釘5(見圖3-8)可調節(jié)最大偏心量(初始偏心量)的大小。從而改變泵的最大輸出流量qA,特性曲線AB段上下平移,當泵的供油壓力p超過預先調整的壓力pB時,液壓作用力大于彈簧的預緊力,此時彈簧受壓

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??縮定子向偏心量減小的方向移動,使泵的輸出流量減小,壓力愈高,彈簧壓縮量愈大,偏心量愈小,輸出流量愈小,其變化規(guī)律如特性曲線BC段所示。調節(jié)調壓彈簧10可改變限定壓力pc的大小,這時特性曲線BC段左右平??移，而改變調壓彈簧的剛度時，可以改變BC段的斜率,彈簧越“軟”(ks值越小),BC段越陡,pmax值越小;反之,彈簧越“硬”(ks值越大),BC段越平坦,pmax值亦越大。當定子和轉子之間的

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