JPH0365749U

JPH0365749U -

Info

Publication number: JPH0365749U
Application number: JP12606989U
Authority: JP
Priority date: 1989-10-27
Filing date: 1989-10-27
Publication date: 1991-06-26

Description

[Brief explanation of drawings]

第１図ａは本考案のマンホールの蓋の平面図、
第１図ｂは同じく側面図、第１図ｃは同じくマン
ホールの蓋とマンホール外側環とを示す平面図、
第２図ａは同じく蓋回転てこの平面図、第２図ｂ
は同じく側面図、第３図ａは同じくマンホールの
蓋外周部分拡大平面図、第３図ｂは同じく部分拡
大側面図、第３図ｃは同じくマンホール外側環部
分拡大平面図、第４図はマンホールの蓋の平面図
、第５図は三点支持吊具の説明図、第６図はマン
ホールの蓋の縦断面図、第７図ａは従来のマンホ
ールの蓋の平面図、第７図ｂは同じくマンホール
の蓋の設置状況を示す縦断面図、第８図は同じく
マンホールの蓋外周の縦断面図、第９図は同じく
マンホールの蓋吊具の説明図である。１……マンホールの蓋、１−１〜１−４……突
起、２……マンホール吊穴、３……マンホール外
側環、３−４……鈎裂き状凹部、４……路面、５
……内蓋、６……フツク、７……引つ掛け具、８
……ワイヤー、９……蓋回転てこ、９−１〜９−
２……てこ支持棒、１０……シール材、１１……
螺子。 Figure 1a is a plan view of the manhole cover of the present invention;
FIG. 1b is a side view, and FIG. 1c is a plan view showing the manhole cover and the outer ring of the manhole.
Figure 2a is a plan view of the lid rotating lever, Figure 2b
is also a side view, Figure 3a is an enlarged plan view of the outer periphery of the manhole cover, Figure 3b is an enlarged side view of the manhole, Figure 3c is an enlarged plan view of the outer ring of the manhole, and Figure 4 is the manhole. Fig. 5 is an explanatory diagram of the three-point support hanger, Fig. 6 is a vertical cross-sectional view of the manhole cover, Fig. 7a is a plan view of a conventional manhole cover, and Fig. 7b is a plan view of the conventional manhole cover. Similarly, FIG. 8 is a vertical cross-sectional view showing the installation status of the manhole cover, FIG. 8 is a vertical cross-sectional view of the outer periphery of the manhole cover, and FIG. 9 is an explanatory diagram of the manhole cover hanging tool. 1... Manhole cover, 1-1 to 1-4... Protrusion, 2... Manhole hanging hole, 3... Manhole outer ring, 3-4... Hook-shaped recess, 4... Road surface, 5
...Inner lid, 6...Hook, 7...Hook, 8
...Wire, 9...Lid rotation lever, 9-1 to 9-
2... Lever support rod, 10... Seal material, 11...
Screw.

Claims

[Claims for Utility Model Registration] (1) A protrusion is provided on the outer periphery of the lid, and a corresponding hook-shaped or screw-shaped recess is provided on the inner periphery of the outer ring, so that the lid can be turned and fitted into the outer ring. Characteristic manhole cover. (2) Claim (1) characterized in that the lid is opened and closed using a three-point support hanger with different lengths of wires.
How to hang a manhole cover as described.