METHOD OF FABRICATING A PRECAST CONCRETE METER PIT
    1.
    发明申请
    METHOD OF FABRICATING A PRECAST CONCRETE METER PIT 审中-公开
    一种预制混凝土板的制作方法

    公开(公告)号:US20090178365A1

    公开(公告)日:2009-07-16

    申请号:US12408502

    申请日:2009-03-20

    IPC分类号: E04B1/16 E04G21/14 E02D29/00

    摘要: A precast concrete meter pit consisting of an elongated hollow pipe having a beveled support ledge at one end and notches at the opposite end is fabricated by utilizing a slip form packerhead apparatus in which the beveled support ledge is formed by a radially inwardly inclined trowel edge bearing against a pallet member which is caused to vibrate when concrete is injected into the slip form apparatus.

    摘要翻译: 一个预制混凝土仪表坑由一个细长的中空管组成,该中空管在一端具有一个倾斜的支撑凸缘,在另一端具有凹口,通过使用一种滑动式打包头装置来制造,其中斜面支撑凸缘由径向向内倾斜的t刀边缘轴承 抵靠当混凝土注入到滑动装置中时使其振动的托盘构件。