型号 : | IC200CHS012 | 品牌 : | GE/通用电气 |
加工定制 : | 否 | 产品认证 : | 已认证 |
输出频率 : | 2220kHz | 工作电压 : | 220V |
IC200CHS012
IC200CHS012
IC200CHS012
IC200CHS012
油液刚度不稳定,特别是液压系统中混入一定的空气,空气的可压缩性使油液也具有一定的可压缩性,从而导致油液刚度减小。油液刚度愈大,产生爬行的可能性就愈小,在其他条件不变的情况下,一切使油液刚度变小的因素,都会产生爬行。
液压缸制造和使用不当也造成爬行。
(2)爬行的原因
爬行是液压系统常见的问题。引起爬行的直接原因有:
油内混入空气,引起执行件动作迟慢,反应滞后。
压力调得过低,或调不高,或漂移下降.当负载加上各种阻力的总和与液压力大致相当时,执行元件表现为似动非动。
系统内压力与流量过大的波动引起执行元件运动不均。
液压系统磨严重,工作压力增高则引内泄漏显著增大。执行件在未带负载时运动速度正常,一旦带上负载,速度立即下降。例如,平面磨床的主工作台在工件未碰到磨头时运动速度正常,一旦碰到磨头,速度变得非常慢就属于这类问题。
导轨与液压缸运动方向不平行,或导轨拉毛,润滑条件差,阻力大,使液压缸运动困难且不稳定。
电路失常也会引执行元件运动状态不良。例如,当行程开关接触不良时,供给电磁铁的电信号也可能是断断续续的,由此引起换向阀不能可靠地开启,并使执行元件的运动不稳定。
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