JPS5973448U

JPS5973448U - Manhole hole iron cover

Info

Publication number: JPS5973448U
Application number: JP16668782U
Authority: JP
Inventors: 佐々木　希代子
Original assignee: 三井鋼材産業株式会社
Priority date: 1982-11-02
Filing date: 1982-11-02
Publication date: 1984-05-18
Also published as: JPS6022118Y2

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]

図面は本案の１実施例を示すもので、第１図は平面図、
第２図は同上のＡ−Ａ線断面図、第３図は第２図の要部
拡大図、第４図は上スカートを展開した状態の斜視図、
第５図は同上のＢ−Ｂ線拡大断面図、第６図は第４図の
Ｃ−Ｃ線拡大断面図、第７図は回転工具の１例を示す斜
視図、第８図は　　−設置の１例を示す縦断面図である
。１・・・・・・マンホール人孔鉄蓋、２・・・・・・受
枠′、３・・・・・・昇降筒、４，５・・・・・・スカ
ート。）「不］４Ｂ−１ヨ甘にニド−（レー６　　　４　９１／−、、）　　　１The drawings show one embodiment of the present invention, and Figure 1 is a plan view;
Fig. 2 is a sectional view taken along line A-A of the same as above, Fig. 3 is an enlarged view of the main part of Fig. 2, Fig. 4 is a perspective view with the upper skirt unfolded,
Fig. 5 is an enlarged sectional view taken along the line B-B of the same as above, Fig. 6 is an enlarged sectional view taken along the line C-C of Fig. 4, Fig. 7 is a perspective view showing an example of a rotary tool, and Fig. 8 is -Installation. It is a longitudinal cross-sectional view which shows one example. 1... Manhole hole iron cover, 2... Receiving frame', 3... Lifting tube, 4, 5... Skirt. ) "Un] 4B-1 Yo sweet nido- (Le 6 4 9 1/-,,) 1

Claims

[Scope of claims for utility model registration] Receiving frame 2, lifting tube 3, and upper and lower skirts 4 having the following conditions:
, 5. An iron manhole cover characterized by comprising an iron cover body 6. (a) The receiving frame 2 shall have threads 2A carved on its inner peripheral surface. The above-mentioned elevating cylinder 3 has a receiving part 3B formed inside the upper opening of the cylinder 3A having a predetermined size, into which the iron lid 6 is removably fitted from above, and the outer periphery of the cylinder. A screw thread 3C that screws into the screw thread 2A mentioned above is engraved on the surface. C. The upper skirt 4 has a cylindrical shape, and its upper edge 4
A is connected at the upper part of the elevating tube 3. (2) The lower skirt 5 is formed into a cylindrical shape, and is installed upwardly in the receiving frame 2, and the upper skirt 4 is fitted into the lower skirt 5 so as to be able to move up and down.