品牌:力士乐
发货:3天内
DBDH6P1X/400
武穴黎翔机电设备有限公司，询价联系人：何女士
询价电话：0713-6542758，手机：18934630908
询价传真：0713-6542758
询价QQ: 736567721,704552157
现货特价型号：R900925687 4WRAE10W1-30-22/G24N9K31/F1V 2台
0811402141 DBETBEX-1X/315G24K31F1M 2台
泵的工作压力愈高,偏心量就愈小,泵的输出流量也就愈小,控制定子移动的作用力是将液压泵出口的压 力油引到柱塞上,然后再加到定子上去,这种控制方式称为外反馈式。 2.限压式变量叶片泵的特性曲线 限压式变量叶片泵在工作过程中,当工作压力p小于预先调定的限定压力pc时,液压作用力不能克服弹簧 的预紧力,这时定子的偏心距保持最大不变,因此泵的输出流量qA不变,但由于供油压力增大时,泵的泄漏流 量pl也增加,所以泵的实际输出流量q也略有减少,如图2-9。限压式变量叶片泵的特性曲线中的AB段所示。调 节流量调节螺钉5(见图3-8)可调节最大偏心量(初始偏心量)的大小。从而改变泵的最大输出流量qA,特性曲线AB段上下平移,当泵的供油压力p超过预先调整的压力pB时,液压作用力大于弹簧的预紧力,此时弹簧受压
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缩定子向偏心量减小的方向移动,使泵的输出流量减小,压力愈高,弹簧压缩量愈大,偏心量愈小,输出流量愈小,其变化规律如特性曲线BC段所示。调节调压弹簧10可改变限定压力pc的大小,这时特性曲线BC段左右平 移，而改变调压弹簧的刚度时，可以改变BC段的斜率,弹簧越“软”(ks值越小),BC段越陡,pmax值越小;反之,弹簧越“硬”(ks值越大),BC段越平坦,pmax值亦越大。当定子和转子之间的
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