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REXROTH高壓柱塞泵技術參數及規格數據
REXROTH高壓柱塞泵技術參數及規格數據 REXROTH力士(shi)樂柱塞(sai)泵(beng)由傳動(dong)(dong)軸1帶動(dong)(dong)缸體4旋轉,斜(xie)盤(pan)2和配油盤(pan)5是固定不動(dong)(dong)的(de)。柱塞(sai)3均(jun)布于缸體4內, 柱塞(sai)的(de)頭部靠機(ji)械裝置或在低壓油作用下緊壓在斜(xie)盤(pan)上。斜(xie)盤(pan)法線(xian)和缸體軸線(xian)的(de)夾角為γ。
REXROTH高壓柱塞泵技術參數及規格數據
REXROTH力士樂柱塞泵由傳(chuan)動(dong)軸(zhou)1帶動(dong)缸(gang)(gang)體(ti)(ti)(ti)4旋(xuan)轉(zhuan),斜盤(pan)(pan)2和配(pei)油(you)(you)盤(pan)(pan)5是(shi)固(gu)定(ding)不(bu)動(dong)的(de)(de)。柱塞3均布于缸(gang)(gang)體(ti)(ti)(ti)4內(nei), 柱塞的(de)(de)頭(tou)部靠機(ji)械裝置或在(zai)(zai)(zai)低壓(ya)(ya)油(you)(you)作用(yong)下(xia)緊壓(ya)(ya)在(zai)(zai)(zai)斜盤(pan)(pan)上。斜盤(pan)(pan)法線和缸(gang)(gang)體(ti)(ti)(ti)軸(zhou)線的(de)(de)夾(jia)角為(wei)γ。當傳(chuan)動(dong)軸(zhou)按(an)圖示方向(xiang)(xiang)旋(xuan)轉(zhuan)時(shi),柱塞一方面隨(sui)缸(gang)(gang)體(ti)(ti)(ti)轉(zhuan)動(dong),另(ling)一方面,在(zai)(zai)(zai)缸(gang)(gang)體(ti)(ti)(ti)內(nei)作往(wang)復運動(dong)。顯然,柱塞相對缸(gang)(gang)體(ti)(ti)(ti)左移(yi)(yi)時(shi)工作容腔是(shi)壓(ya)(ya)油(you)(you)狀態,油(you)(you)液(ye)經配(pei)油(you)(you)盤(pan)(pan)的(de)(de)吸(xi)油(you)(you)口a吸(xi)入;柱塞相對缸(gang)(gang)體(ti)(ti)(ti)右移(yi)(yi)時(shi)工作容腔是(shi)壓(ya)(ya)油(you)(you)狀態,油(you)(you)液(ye)從配(pei)油(you)(you)盤(pan)(pan)的(de)(de)壓(ya)(ya)油(you)(you)口b壓(ya)(ya)出。缸(gang)(gang)體(ti)(ti)(ti)每轉(zhuan)一周,每個柱塞完成(cheng)吸(xi)、壓(ya)(ya)油(you)(you)一次(ci)。 如果(guo)可以改變斜角γ的(de)(de)大小和方向(xiang)(xiang),就(jiu)能改變泵的(de)(de)排量和吸(xi)、壓(ya)(ya)油(you)(you)的(de)(de)方向(xiang)(xiang),此時(shi)即為(wei)雙向(xiang)(xiang)變量rexroth軸(zhou)向(xiang)(xiang)柱塞泵。
REXROTH力(li)士樂A4VG125常(chang)用型號:
A4VG125EP2D1/32R-NZF02F001DH
A4VG125EP2DM1/32L-NZF02F001S
A4VG125EP2DT1/32R-NZF02F001S
A4VG125HD1D1/32R-NZF02F001D
A4VG125HD1D2/32R-NSF02F071S
A4VG125HD1DM1/32L-NSF02F001S
A4VG125HD1MT1/32R-NSF02F021S
A4VG125HDMT1/32R-NSF02F691S
A4VG125HWD1/32L-NZX02F001S
A4VG125HWD1/32R-NZF02F071D-S
A4VG125HWD1/32R-NZF02F071D
REXROTH力士樂軸向柱塞泵的排量和流量
1) 排量 若柱(zhu)塞(sai)數為(wei)(wei)z,柱(zhu)塞(sai)直(zhi)徑(jing)為(wei)(wei)d,柱(zhu)塞(sai)孔的(de)分布圓直(zhi)徑(jing)為(wei)(wei)D, 斜盤傾(qing)角為(wei)(wei)γ, 則(ze)柱(zhu)塞(sai)的(de)行程為(wei)(wei):h=Dtanγ,故缸體轉(zhuan)一(yi)轉(zhuan), 泵(beng)的(de)排量為(wei)(wei): V=Zhπd /4= π d2 ZD(tanγ)/4 2) 流量 理論流量: qT = Vn = πd2D(tanγ)z/4 實際流量: q = qTηpv =πd2D(tanγ)zηpv/4 結論:
(1) qT = f(幾何參數、 n、γ)
(2) n = c 大小(xiao)變(bian)(bian)化(hua)(hua),流(liu)(liu)量(liang)(liang)大小(xiao)變(bian)(bian)化(hua)(hua) γ< 方(fang)向變(bian)(bian)化(hua)(hua),輸油方(fang)向變(bian)(bian)化(hua)(hua) 變(bian)(bian)量(liang)(liang)原理: ∵ γ= 0 q = 0 大小(xiao)變(bian)(bian)化(hua)(hua),流(liu)(liu)量(liang)(liang)大小(xiao)變(bian)(bian)化(hua)(hua) γ< 方(fang)向變(bian)(bian)化(hua)(hua),輸油方(fang)向變(bian)(bian)化(hua)(hua) ∴ 軸向柱(zhu)(zhu)塞(sai)(sai)泵可作(zuo)為雙向變(bian)(bian)量(liang)(liang)泵 瞬時(shi)(shi)流(liu)(liu)量(liang)(liang): 柱(zhu)(zhu)塞(sai)(sai)的(de)軸向位移: s = a’b’=oa’-ob’ = Dtanγ/2 – Dcosωttanγ/2 = D(1-cosωt)tanγ/2 力(li)士樂(le)柱(zhu)(zhu)塞(sai)(sai)泵的(de)瞬時(shi)(shi)移動(dong)(dong)速度: u = ds/dt = Dωtanγsinωt/2 單個力(li)士樂(le)柱(zhu)(zhu)塞(sai)(sai)泵的(de)瞬時(shi)(shi)流(liu)(liu)量(liang)(liang)為: q‘=πd2u/4=πd2Dωtanγsinωt/8 ∵ 單個柱(zhu)(zhu)塞(sai)(sai)的(de)瞬時(shi)(shi)流(liu)(liu)量(liang)(liang)按(an)(an)正弓玄規律變(bian)(bian)化(hua)(hua) ∴ 整個泵的(de)瞬時(shi)(shi)流(liu)(liu)量(liang)(liang)也按(an)(an)正弓玄規律變(bian)(bian)化(hua)(hua) 故(gu) 瞬時(shi)(shi)流(liu)(liu)量(liang)(liang)是脈動(dong)(dong)的(de),其脈動(dong)(dong)情況用(yong)脈動(dong)(dong)率(lv)δ來表(biao)示, 一般(ban): z = 奇(qi)數(shu),δ小(xiao) z = 偶數(shu),δ大 常取z = 7 或z = 9
REXROTH高壓柱塞泵技術參數及規格數據