JPH03111999U

JPH03111999U -

Info

Publication number: JPH03111999U
Application number: JP2065590U
Authority: JP
Priority date: 1990-02-28
Filing date: 1990-02-28
Publication date: 1991-11-15

Description

[Brief explanation of drawings]

第１図はグラスライニング機器における本考案
実施例のマンホールカバー装置の縦断側面図、第
２図はその部分平面図、第３図はそのＬ字形断面
ガスケツトの封止状態を示す部分拡大縦断面図、
第４図は従来技術のグラスライニング機器のマン
ホール装置の１例を示す縦断側面図、第５図はそ
の平面図である。１……マンホール開口、２……短筒状カラー、
３……ガスケツト、４……クランプ、５……マン
ホールカバー、５ａ……支持座、５ｂ……ヒンジ
、６……ガスケツト、７……覗窓ガラス、８……
ヒンジアーム、９……ピン軸、１０……直径横断
アーム、１０ａ……２叉受部、１０ｂ……開閉用
ハンドル、１１……ピン、１２……ピン、１３…
…バネバランス装置、１４……取付座、１５……
スイングボルト、１６……ピン、１７……圧下ハ
ンドル、１８……グラスライニング被覆、１９…
…バンド、２０……シリコンゴム中芯、２０ａ…
…ふくらみ部、２１……テフロンコート材、ａ…
…マンホール開口、ｂ……エクステンシヨンカラ
ー、ｃ……クランプ、ｄ……耐蝕性ガスケツト、
ｅ……覗窓ガラス、ｆ……マンホールカバー、ｇ
……ヒンジアーム、ｈ……ヒンジ、ｉ……バネバ
ランス開閉装置、ｊ……ハンドル、ｋ……耐蝕性
ガスケツト、ｌ……クランプ。 Fig. 1 is a longitudinal sectional side view of a manhole cover device according to an embodiment of the present invention for glass lining equipment, Fig. 2 is a partial plan view thereof, and Fig. 3 is a partially enlarged longitudinal sectional view showing the sealed state of the L-shaped cross-section gasket. ,
FIG. 4 is a longitudinal sectional side view showing an example of a conventional manhole device for glass lining equipment, and FIG. 5 is a plan view thereof. 1... Manhole opening, 2... Short cylindrical collar,
3... Gasket, 4... Clamp, 5... Manhole cover, 5a... Support seat, 5b... Hinge, 6... Gasket, 7... Peep glass, 8...
Hinge arm, 9...Pin shaft, 10...Diameter transverse arm, 10a...2 prongs, 10b...Handle for opening/closing, 11...Pin, 12...Pin, 13...
...Spring balance device, 14...Mounting seat, 15...
Swing bolt, 16... Pin, 17... Lowering handle, 18... Glass lining coating, 19...
...Band, 20...Silicone rubber core, 20a...
...Bulge, 21...Teflon coat material, a...
...manhole opening, b...extension collar, c...clamp, d...corrosion-resistant gasket,
e... Peep glass, f... Manhole cover, g
...Hinge arm, h...Hinge, i...Spring balance opening/closing device, j...Handle, k...Corrosion-resistant gasket, l...Clamp.

Claims

[Scope of utility model registration request]

A diameter transverse arm hinged by a pin shaft on a hinge arm extending to one side of the collar to the upper opening of a short cylindrical collar which is extended and sealed with a gasket over the manhole opening of the glass lining equipment. A manhole cover that closes to the upper opening of the collar is pivotally connected at the center of its upper part to the middle of the diametrically transverse arm by a pin, and these are connected to a spring balance mechanism on one side and the diametrically transverse arm The gasket can be engaged with the closing and lowering mechanism on the other side, and is further characterized in that an annular gasket with an L-shaped cross section bent from the lower circumferential surface of the manhole cover to the outer circumferential edge is fixed to the outer circumferential edge of the manhole cover with a band. Manhole cover device for glass lining equipment.