A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
UNDERGROUND TYPE FIRE HYDRANT
PROBLEM TO BE SOLVED: To provide an underground type fire hydrant usable even in small opening and even in full opening.SOLUTION: A valve rod 21 corresponds to a rotary shaft body, and a threadedly engaging structure corresponds between a male screw 21a of the valve rod 21 and a female screw 22a of a female screw piece 22, and since a valve element 31 moves in the vertical direction by rotary operation of a predetermined rotating speed range of the valve rod 21 that is a rotary shaft body, a valve element opening-closing driving part is constituted thereby. When a ball plunger 22c is opposed to a notch 21b formed in an apex part of the male screw 21a of the valve rod 21, both irregularly engage when a ball part enters into the notch 21b, but the valve rod 21 does not easily rotate in this state. An engaging state of the ball part of the ball plunger 22c and the notch 21b is released by rotating by force of a predetermined value or more. Thus, the ball plunger 22c and the notch 21a constitute an irregular engaging mechanism for maintaining the valve rod 21 that is the rotary shaft body at the same angle with every predetermined rotation angle.SELECTED DRAWING: Figure 3
【課題】 小開度でも全開でも利用可能な地下式消火栓を提供する。【解決手段】 弁棒２１は回転軸体に相当し、螺合構造は弁棒２１の雄ねじ２１ａと雌ねじ駒２２の雌ねじ２２ａとが相当し、回転軸体である弁棒２１の所定回転数の範囲の回転動作によって弁体３１が上下方向に移動するので、これらによって弁体開閉駆動部を構成している。ボールプランジャ２２ｃが弁棒２１の雄ねじ２１ａの頂部に形成された切り欠き２１ｂに対面すると、ボール部位が切り欠き２１ｂ内に入り込んで両者は凹凸係合するが、この状態では弁棒２１は容易には回転しない。所定値以上の力で回転させることで、ボールプランジャ２２ｃのボール部位と切り欠き２１ｂとの係合状態は解除される。従って、ボールプランジャ２２ｃと切り欠き２１ｂは、回転軸体である弁棒２１を所定回転角度ごとに同角度を維持させるための凹凸係合機構を構成している。【選択図】 図３
UNDERGROUND TYPE FIRE HYDRANT
PROBLEM TO BE SOLVED: To provide an underground type fire hydrant usable even in small opening and even in full opening.SOLUTION: A valve rod 21 corresponds to a rotary shaft body, and a threadedly engaging structure corresponds between a male screw 21a of the valve rod 21 and a female screw 22a of a female screw piece 22, and since a valve element 31 moves in the vertical direction by rotary operation of a predetermined rotating speed range of the valve rod 21 that is a rotary shaft body, a valve element opening-closing driving part is constituted thereby. When a ball plunger 22c is opposed to a notch 21b formed in an apex part of the male screw 21a of the valve rod 21, both irregularly engage when a ball part enters into the notch 21b, but the valve rod 21 does not easily rotate in this state. An engaging state of the ball part of the ball plunger 22c and the notch 21b is released by rotating by force of a predetermined value or more. Thus, the ball plunger 22c and the notch 21a constitute an irregular engaging mechanism for maintaining the valve rod 21 that is the rotary shaft body at the same angle with every predetermined rotation angle.SELECTED DRAWING: Figure 3
【課題】 小開度でも全開でも利用可能な地下式消火栓を提供する。【解決手段】 弁棒２１は回転軸体に相当し、螺合構造は弁棒２１の雄ねじ２１ａと雌ねじ駒２２の雌ねじ２２ａとが相当し、回転軸体である弁棒２１の所定回転数の範囲の回転動作によって弁体３１が上下方向に移動するので、これらによって弁体開閉駆動部を構成している。ボールプランジャ２２ｃが弁棒２１の雄ねじ２１ａの頂部に形成された切り欠き２１ｂに対面すると、ボール部位が切り欠き２１ｂ内に入り込んで両者は凹凸係合するが、この状態では弁棒２１は容易には回転しない。所定値以上の力で回転させることで、ボールプランジャ２２ｃのボール部位と切り欠き２１ｂとの係合状態は解除される。従って、ボールプランジャ２２ｃと切り欠き２１ｂは、回転軸体である弁棒２１を所定回転角度ごとに同角度を維持させるための凹凸係合機構を構成している。【選択図】 図３
UNDERGROUND TYPE FIRE HYDRANT
地下式消火栓
MOTOMURA HIROSHI (author) / TSUCHIDA KUNIO (author)
2017-08-24
Patent
Electronic Resource
Japanese
IPC:
E03B
Anlagen oder Verfahren zum Gewinnen, Sammeln oder Verteilen von Wasser
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INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER