Height adjustment device of the underground housing

摘要

(57) [summary] (modified with) at the time of installation of the underground housing, such as [purpose] fire hydrant, Tomo no lid surface, such as the installation location raising of underground housing that can be easily matched with the road surface of to provide a height adjustment device. [Configuration] in the square of the underground enclosure formed by molding in cast iron, the hakama 3 that fitted to the upper end of the housing than receiving frame or height lower end of the adjustment frame 4 of the lid and vertically, to the four corners of the The bored bolt insertion holes 7 in vertical, with height adjustment device which is adapted for coupling with the housing and the angle 6, the contact surfaces of the skirt and the angle is formed so as to form an arc, formed in the vertical plane of the angle bolt insertion hole to be a horizontally long, even a height adjustment device for underground housing constructed to mesh to form respective rack 9 on the contact surface of the skirt and angle.