秦沈高速铁路24米、32米箱梁内模张收液压系统
Qinshen Super Railway 24m and 32m box girder internal molding expanding and retrieving hydraulic system

　　该液压系统采用多缸同步技术来张开和收回内模板，并采用保压技术来保持箱梁浇铸时内模板张开的状态。
　　It utilizes the multi-cylinder synchronization technology to expand and retrieve the internal mold with pressure retaining technology to keep the internal mold expanded during casting of box girders.