| 摘要 |
The present invention provides: a concrete pipe manufacturing apparatus including an external die in which a molding hole having the same shape as an external shape of a concrete pipe is formed upward and downward; an internal die that is positioned apart from an inner side surface of the molding hole and is mounted to be lifted and lowered upward and downward; a concrete supply unit that supplies concrete between an inner side surface of the external die and an outer side surface of the internal die; a lower sealing unit that is arranged on a lower side of the external die and seals a lower side of a space between the external die and the internal die; a vibration supply unit that is coupled with the lower plate and transmits vibration to the lower plate; a lifting and lowering unit that is coupled with the internal die so that the internal die is lifted and lowered; and an external frame that is arranged on one side of the lifting and lowering unit to support the lifting and lowering unit. According to the concrete pipe manufacturing apparatus of the present invention, the vibration supply unit is added to the concrete pipe manufacturing apparatus, and thus bubbles in the concrete that may be generated during concrete placement can be removed. Also, the concrete can be provided with higher density, and thus an adhesive force between a rebar and the concrete can be increased and the strength of the manufactured concrete pipe can be increased. |
