JPH0226670U

JPH0226670U -

Info

Publication number: JPH0226670U
Application number: JP10361988U
Authority: JP
Priority date: 1988-08-03
Filing date: 1988-08-03
Publication date: 1990-02-21

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す縦断面図、第２
図は調整リングの他の使用例を示す要部拡大断面
図、第３図は路面ボツクスの他の実施例を示す要
部断面図、第４図は従来例を示す縦断面図である
。１１：ガス管、１２：弁装置、１３：内筒、１
４：調整リング、１５：内蓋、１６：ベースボツ
クス、１７：筒部、１８：支持フランジ、１９：
路面ボツクス、２０：連結フランジ、２１：上部
筒、２２，２４：ボルト、２３：外蓋、ア，イ：
隙間。 Fig. 1 is a vertical sectional view showing an embodiment of the present invention;
The figure is an enlarged sectional view of the main part showing another example of use of the adjustment ring, FIG. 3 is a sectional view of the main part showing another embodiment of the road surface box, and FIG. 4 is a longitudinal sectional view showing a conventional example. 11: Gas pipe, 12: Valve device, 13: Inner cylinder, 1
4: Adjustment ring, 15: Inner lid, 16: Base box, 17: Cylinder, 18: Support flange, 19:
Road surface box, 20: Connection flange, 21: Upper tube, 22, 24: Bolt, 23: Outer cover, A, B:
gap.

Claims

[Scope of Claim for Utility Model Registration] 1. A small-diameter, cylindrical inner cylinder is connected to a pipe buried underground in an upright manner, and the upper end of the inner cylinder is placed at a lower position than the ground surface, and the upper It is closed with an inner lid that can be opened and closed, and the outer periphery of the inner cylinder is surrounded by a large-diameter base box with a support flange formed, and a connecting flange is connected to an upper cylinder formed in a small diameter and cylindrical shape and the lower end of the upper cylinder. The road surface box in which a , a service pit for buried piping, characterized in that the upper surface of the upper tube is closed with an outer cover that can be opened and closed. 2 A small-diameter, cylindrical inner cylinder is connected to a pipe buried underground by standing upright, the upper end of the inner cylinder is placed lower than the ground surface, and the upper end is closed with an openable inner lid. At the same time, the outer periphery of the inner cylinder is surrounded by a large-diameter, cylindrical base box having a support flange extending in the radial direction at the bottom, and the lower end of the upper cylinder is formed in a small-diameter, cylindrical shape at the top of the base box. A road surface box having a connecting flange that expands outward in the radial direction is arranged upright, and the connecting flange is connected to the base box, and the lower end of the upper cylinder is held at the upper part of the inner cylinder with a slight gap. A service pit for underground piping, characterized in that the upper end of the upper tube is located on the ground surface, and the upper surface of the upper tube is closed with an openable and closable outer cover. 3. The pit for servicing buried piping according to claim 1 or 2, wherein the road surface box has an upper tube and a connecting flange separably connected to each other.