<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt"><A href="http://www.qianjinding168.com/"><SPAN lang=EN-US><SPAN lang=EN-US><FONT size=3>千斤顶</FONT></SPAN></SPAN></A></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt"><FONT size=3>维修千斤顶原理千斤顶使用龙海<SPAN lang=EN-US><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></SPAN></B></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">龙海液压<SPAN lang=EN-US><A href="http://xiaoli.b2b.wuliu800.com/"><SPAN lang=EN-US><SPAN lang=EN-US>千斤顶</SPAN></SPAN></A></SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">适用于起重高度不大的各种起重作业。<B style="mso-bidi-font-weight: normal">液压<SPAN lang=EN-US><A href="http://www.qianjinding168.com/product/class/68.html"><SPAN lang=EN-US><SPAN lang=EN-US>千斤顶</SPAN></SPAN></A></SPAN></B>由油室、油泵、储油腔、活塞、摇把、油阀等主要部分组成。<B style="mso-bidi-font-weight: normal">液压<SPAN lang=EN-US><A href="http://www.huanlianhulu.cn/cp/class/12.html"><SPAN lang=EN-US><SPAN lang=EN-US>千斤顶</SPAN></SPAN></A></SPAN></B>工作时，只要往复扳动摇把，使手动油泵不断向油缸内压油，由于油缸内油压的不断增高，就迫使活塞及活塞上面的重物一起向上运动。打开<B style="mso-bidi-font-weight: normal">液压千斤顶的</B>回油阀，油缸内的高压油便流回储油腔，于是重物与活塞也就一起下落。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; 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