| 摘要 |
PURPOSE: A manhole molding apparatus for easily forming connection holes along to the side surface of a manhole is provided to smoothly separate the manhole from a mold after molding. CONSTITUTION: A manhole molding apparatus includes a lower plate(10), four side plates(20), a connection-hole mold(30), a plate fixing unit(40), four separation plate members, and a mold separation unit(60). An inner mold(11) is installed on the upper side of the lower plate. The four side plates are hinge connected to the edge of the lower plate. The connection-hole mold is installed in the inside of the side plates in a cone shape. The plate fixing unit is installed on the side plates. The separation plate members are installed on the lower plate. The mold separation unit lifts the separation plate members, and includes a hydraulic pressure member(61), a connection hose(62), and a hand pump(63).
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