作业帮摘要翻译,求真正的英语高手
来源：学生作业帮 编辑：拍题作业网作业帮 分类：英语作业 时间：2024/05/19 21:29:17
摘要翻译,求真正的英语高手
摘要
:所设计的四顶顶升系统的主要参数是每只千斤顶高约1000mm,最大行程为400mm,最大载荷为20t.因千斤顶载荷较大,位置精度要求较高,故顶升速度不宜过大,最大顶升速度应控制在60mm/min以内.
工作原理是,二位四通电磁换向阀的电磁铁的工作状态是由单片机控制的,当换向阀电磁铁通电时,换向阀左位接入系统,油液经电磁换向阀和平衡阀进入油缸下腔,使得千斤顶上升,再从油缸上腔流出,经电磁换向阀和滤油器流回到油箱内,这时平衡阀的作用相当于一个单向阀；反之,当换向阀电磁铁断电时,换向阀右位接入系统,油液经换向阀流入油缸上腔,当上腔压力达到一定值时,平衡阀上位接入系统,这时平衡阀的作用相当于一个节流阀,油液从油缸下腔流出,经平衡阀、电磁换向阀和滤油器流回到油箱.从而实现了千斤顶升降换向功能,并具有过载保护和断电保护的功能.
为了适应复杂工作表面的工件,千斤顶的工作台与活塞杆应采用转动连接副相连当顶升系统工作时,液压千斤顶工作台可随工件表面形状进行自由转动调节,所以设计时将活塞杆顶部插入球头,与工作台形成转动副.
由于光栅尺的尺寸较长,将活塞和活塞杆做成中空状来放置光栅.工作时发光元件与光敏元件随活塞作同步运动,光栅尺下端固定在底盖上不动,光源与光栅尺的相对位移量通过读数头转化为数字信号传递给单片机.
关键词： 四顶同步顶升 单片机 光栅
摘要
:所设计的四顶顶升系统的主要参数是每只千斤顶高约1000mm,最大行程为400mm,最大载荷为20t.因千斤顶载荷较大,位置精度要求较高,故顶升速度不宜过大,最大顶升速度应控制在60mm/min以内.
工作原理是,二位四通电磁换向阀的电磁铁的工作状态是由单片机控制的,当换向阀电磁铁通电时,换向阀左位接入系统,油液经电磁换向阀和平衡阀进入油缸下腔,使得千斤顶上升,再从油缸上腔流出,经电磁换向阀和滤油器流回到油箱内,这时平衡阀的作用相当于一个单向阀；反之,当换向阀电磁铁断电时,换向阀右位接入系统,油液经换向阀流入油缸上腔,当上腔压力达到一定值时,平衡阀上位接入系统,这时平衡阀的作用相当于一个节流阀,油液从油缸下腔流出,经平衡阀、电磁换向阀和滤油器流回到油箱.从而实现了千斤顶升降换向功能,并具有过载保护和断电保护的功能.
为了适应复杂工作表面的工件,千斤顶的工作台与活塞杆应采用转动连接副相连当顶升系统工作时,液压千斤顶工作台可随工件表面形状进行自由转动调节,所以设计时将活塞杆顶部插入球头,与工作台形成转动副.
由于光栅尺的尺寸较长,将活塞和活塞杆做成中空状来放置光栅.工作时发光元件与光敏元件随活塞作同步运动,光栅尺下端固定在底盖上不动,光源与光栅尺的相对位移量通过读数头转化为数字信号传递给单片机.
关键词： 四顶同步顶升 单片机 光栅
Abstract
The design of four specialists the main parameters of the lifting system is only about 1000 per jack high mm, the biggest travel for 400 mm, maximum load of 20 t. For jack load is bigger, position higher accuracy, the roof up speed shoulds not be too big, the biggest roof up speed should be controlled in 60 mm/min less than. Working principle is, two stone electromagnetic reversing valve electromagnet work of the state is by the single chip microcomputer control, when reversing valve electromagnet electricity, reversing valves left a access system, the oil by electromagnetic reversing valves and balancing valve into the oil cylinder of inferior vena, makes jack rose, and again from oil cylinder from the cavity, the electromagnetic reversing valves and oil filters flow back to the fuel tank inside, then balancing valve functions as a one-way valve; Conversely, when reversing valve electromagnet without electricity, reversing valves right a access system, the oil flow into the oil cylinder by reversing valves on cavity, when the cavity pressure to a certain value, the balance valve upper access system, then balancing valve functions as a throttle valve, the oil from the oil cylinder of inferior vena outflow, through balance valve,
The design of four specialists the main parameters of the lifting system is only about 1000 per jack high mm, the biggest travel for 400 mm, maximum load of 20 t. For jack load is bigger, position higher accuracy, the roof up speed shoulds not be too big, the biggest roof up speed should be controlled in 60 mm/min less than. Working principle is, two stone electromagnetic reversing valve electromagnet work of the state is by the single chip microcomputer control, when reversing valve electromagnet electricity, reversing valves left a access system, the oil by electromagnetic reversing valves and balancing valve into the oil cylinder of inferior vena, makes jack rose, and again from oil cylinder from the cavity, the electromagnetic reversing valves and oil filters flow back to the fuel tank inside, then balancing valve functions as a one-way valve; Conversely, when reversing valve electromagnet without electricity, reversing valves right a access system, the oil flow into the oil cylinder by reversing valves on cavity, when the cavity pressure to a certain value, the balance valve upper access system, then balancing valve functions as a throttle valve, the oil from the oil cylinder of inferior vena outflow, through balance valve,