JPS616546U

JPS616546U - Iron cover for manhole

Info

Publication number: JPS616546U
Application number: JP9001084U
Authority: JP
Inventors: 成弘岸本
Original assignee: 株式会社神戸鋳鉄所
Priority date: 1984-06-15
Filing date: 1984-06-15
Publication date: 1986-01-16
Also published as: JPH0246507Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はこの考案の１実施例の部分正面図、縞２図は第
１図に対応する部分平面図、第３図は同実施例の鉄蓋と
その受枠を示す平面図、第４図は第３図のＡ−Ａ断面拡
大図、第５図乃至第８図は第４図と同じ断面の夫々異な
る開蓋途中の状態を示す断面図、第９図は従来の開蓋用
バール差込穴とバールの１例を示す概略部分平面区であ
る。１０・・・鉄蓋、１１・・・受枠、１２・・・切欠部、
１２ａ・・・広幅部、２０・・・上壁部、２０ａ・・・
下面、２１・・・周壁部、２４・・・係合部、３ｏ・・
・バール、３１・・・小突起。Fig. 1 is a partial front view of one embodiment of this invention, Fig. 2 is a partial plan view corresponding to Fig. 1, Fig. 3 is a plan view showing the iron lid and its receiving frame of the same embodiment, Fig. 4 is an enlarged cross-sectional view taken along line A-A in Fig. 3, Figs. 5 to 8 are cross-sectional views of the same cross-section as Fig. 4, showing different states in the middle of opening the lid, and Fig. 9 shows the difference between the conventional crowbars for opening the lid. This is a schematic partial plane section showing an example of a hole and a crowbar. 10... Iron lid, 11... Receiving frame, 12... Notch,
12a... Wide part, 20... Upper wall part, 20a...
Lower surface, 21... peripheral wall part, 24... engaging part, 3o...
- Burl, 31...small protrusion.

Claims

[Scope of utility model registration request]

It has an earthen wall part forming an upper surface, and a peripheral wall part forming an outer peripheral surface that is connected to the outer edge of the upper wall part and fits into the inner periphery of a receiving frame forming a manhole. In a manhole iron cover in which a notch for inserting a crowbar is formed across both sides of the surrounding wall, the notch extends from near the outer edge of the top wall to a predetermined height position midway in the side wall. It is formed to have a width corresponding to the diameter of the tip of the crowbar, and from the predetermined height position to the lower end of the side wall is formed into a wide part that is wider than the width on both sides, and the predetermined height position is the width of the crowbar tip. An iron cover for a manhole, characterized in that it is set below the lower surface of the outer edge of the upper wall.