力士乐摆角传感器VT-SWA-1-13/DFEE

力士乐摆角传感器VT-SWA-1-13/DFEE，德国REXROTH全新原装，现货库存，价格优惠，武汉百士自动化设备有限公司供应；

滑阀结构
按结构可分为圆柱滑阀、旋转滑阀和平板滑阀，其中圆柱滑阀具有优良的控制特性，在伺服系统中应用较广:。
圆柱滑阀是借助阀芯和阀套之间的相对运动改变节流孔的面积以达到对液流进行控制的。按液流进入和离开滑阀的通道数目分为二通、三通和四通滑阀按滑阀工作边数目(即有效节流孔数目)可分为单边、双边和四边滑阀;按滑阀在中位时的开口或重迭形式可分为零开口(零重迭)、负开口、正开口、滑阀等。
三通(双边)滑阀广泛应用于机械一液压位置伺服系统中，用来控制差动缸。
与四通滑阀相比，流量增益与零开口四通滑阀相同，压力增益为其一半，因此对三通滑阀来说，在相同的负载力和摩擦负载力的条件下将使系统引起两倍的静态误差。
这种阀的液压固有频率低，响应慢，这些缺点在很大程度上抵消了其制造简单的优点，因此三通滑阀较适用于机液伺服系统，因为这种系统只有很小的负载或者根本没有负载，或者是允许有较大误差。
溢流阀上的功率损失虽然不发生在滑阀处，但它是由于滑阀工作所造成的，因此也应算在滑阀的效率里。
力士乐摆角传感器VT-SWA-1-13/DFEE
力士乐REXROTH电动液压控制系统
力士乐REXROTH泵预加载阀，用于SYDFE闭环控制系统
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R901184450 SYDZ0001-1X/150V028V
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R900564499 SYDZ0001-1X/200V071M
R900538904 SYDZ0001-1X/200V140M
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R900562331 SYDZ0001-1X/250V045M
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R910948559 SYDZ0001-V140-1X/250MRD67016
R910948494 SYDZ0001-V140-1X/300MRD67016
力士乐REXROTHA10VSO轴向柱塞泵SYDFE控制系统的外部控制电子元件模拟放大器，可配置
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R901312265 VT5041-3X/V12V
R901263600 VT5041-3X/V13D
R901263599 VT5041-3X/V30D
力士乐REXROTHA10VSO轴向柱塞泵SYDFE控制系统摆角传感器、旋转角度传感器
R900846331 ASSEMBLY AID TRAEGER VT-SWA
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R900868651 ASSEMBLY KIT VT-SWA-1-1X/SYDFEE &
R900842513 ASSEMBLY KIT VT-SWA/DFEE/28 >11/97
R902562426 SENSOR SW-HALL-VT-SWA A1VO3&
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R902565786 SUBASSEMBLY VT-SWA-LIN-1X/G15-1-&
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R902565788 SUBASSEMBLY VT-SWA-LIN-1X/G15-3-&
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R900830438 BAUSATZ VT-SWA/DFEE/71 (-> 11/97)
R900029748 CARRIER VT-SWA -10/
R910994012 MAGNETTRAEGER VT-SWA-10
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R901035692 XM-VT-SWA-1-1X/DFEE
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R901355517 VT-SWA-1-1X/DFEE-G15
R901123045 VT-SWA-1-1X/DFEE-MIL
R901396458 VT-SWA-1-1X/SYDFEE-G15*BG
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R901377745 VT-SWA-1-1X/SYDFEE/18...140-002*BG
R901014812 VT-SWA-LIN-1X/G10-1-K44
R901014815 VT-SWA-LIN-1X/G10-2-K44
R901000272 VT-SWA-LIN-1X/G10-3-K44
力士乐REXROTH电动液压控制系统
零配件
力士乐REXROTH带电气位置反馈直动式三位三通比例方向阀作为SYDFE控制系统的先导阀
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R961008264 ADJUSTINGMAGNET VT-DFPE-A-2X/G24K0/2&
R961007995 ADJUSTINGMAGNET VT-DFPE-D-2X/G24K0/D&
R961011850 ADJUSTINGMAGNET VT-DFPN-X-2X/.
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一、液压泵的基本工作原理
单柱塞泵的工作原理。凸轮由电动机带动旋转。当凸轮推动柱塞向上运动时，柱塞和缸体形成的密封体积减小，油液从密封体积中挤出，经单向阀排到需要的地方去。当凸轮旋转至曲线的下降部位时，弹簧迫使柱塞向回下，形成一定真空度，油箱中的油液在大气压力的
作用下进入密封容积。凸轮使柱塞不断地升降，密封容积周期性地减小和增大，泵就不断吸油和排油。
容积式液压泵的共同工作原理如下:
(1)容积式泵必定有一一个或若干个周期变化的密封容积。密封容积变小使油液被挤出，密封容积变大时形成一定真空度，油液通过吸油管被吸入。密封容积的变换量以及变化频率决定泵的流量。
( 2)合适的配流装置。不同形式泵的配流装置虽然结构形式不同，但所起作用相同，并且在容积式泵中是必不可少的。容积式泵排油的压力决定于排油管道中油液所受到的负载。

二、液压泵的主要性能参数
1、压力
工作压力是指泵的输出压力，其数值决定于外负载。如果负载是串联的，泵的工作压力是这些负载压力之和;如果负载是并联的，则泵的工作压力决定于并联负载中较小的负载压力。
额定压力是指根据实验结果而推荐的可连续使用的高压力，他反映了泵的能力(一般为泵铭
牌上所标的压力)。在额定压力下运行时，泵有足够的流量输出，并且能保证较高的效率和寿命。
高压力比额定压力稍高，可看作是泵的能力极限。一-般不希望泵长期在高压力下运行。
2、排量和流量
排量q指在无泄漏情况下，液压泵转- ~转所能排出的油液体积。可见，排量的大小只与液压泵中密封工作容腔的几何尺寸和个数有关。排量的常用单位是(ml/r) 。
单柱塞泵:q=πd2H/4
理论流量Q指在无泄漏情况下， 液压泵单位时间内输出的油液体积。其值等于泵的排量V和泵轴转数n的乘积，即:QT=qn=πd2Hn/4
实际流量Q指单位时间内液压泵实际输出油液体积。由于工作过程中泵的出 口压力不等于零，因而存在内部泄漏量0Q (泵的工作压力越高，泄漏量越大)，使得泵的实际流量小于泵的理论流量，即Q=QT-AQ
泵的实际流量和理论流量之比称为容积效率ηpv=Q/Qn=(Qr~OQ)/Qr =1-0Q/Qr且Q=Qr*Npv
3、功率、机械效率和总效率
输入功率P;驱动液压泵的机械功率,由电动机或柴油机给出P; =2πnMr
输出功率Po液压泵输出的液压功率,
P.=pQr
根据能量守恒，有pQ_=2πM~n将Q.=qn,消去n得M~=pq/2π
实际_上，由于泵内有各种机械和液压摩擦损失,泵的实际输入转矩应大于理论转矩