JP3542644B2 - Ceiling hydrant - Google Patents

Description

[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to a fire hydrant facility installed behind a ceiling.
[0002]
[Prior art]
Conventionally, a take-out device that uses only a hose in a horizontal direction (Japanese Utility Model Laid-Open No. 1-180253), a structure in which a drum installed horizontally extends only the hose when the hose is pulled out, and rotates vertically when storing the drum (Japanese Utility Model Application No. 4-61565). There is a case where abnormal draw-out load such as entanglement of the hose occurs at the time of pressurization, and there is a problem in safety because the hose falls.
[0003]
Also, there is a horizontally installed drum in which only the hose is extended when the hose is pulled out, and the drum is rotated vertically when being stored (Japanese Utility Model Laid-Open No. 4-61565). However, the hinge of the door is located at the center of rotation and has a distance from the center of gravity of the drum, so that the door and the hinge need to have great rigidity, and a storage force is required. The entire support is large because the door hinge part on which a large load acts is far from the ceiling slab and is biased.
[0004]
In addition, there are two doors, the reliability is inferior, and the drawer of only the hose with the drum in the horizontal direction may be entangled when pressurized.
[0005]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to smoothly lower the entire drum, thereby making it easier to take out and store the hose and to lengthen the lowering stroke.
Also, the drum is horizontal and there is little space in the height above the ceiling, and the drum can be pulled out and stored simply by rotating the drum from horizontal to vertical,
The rotating shaft and piping are also used, the turning radius to the center of gravity is short, the rotating torque and the holding force of the latch are small, the storage work is easy, the drum descending distance from the ceiling surface is small, and even the site where the ceiling surface is low The purpose is to be able to deal with it without making it large and to simplify the installation work.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a fire hose winding drum connected to a main valve of a water pipe in a freely rotatable manner at a central portion of an upper surface of a descendable fitting ceiling plate to stretch the fitting ceiling plate. A hook fitting supported in the same plane as the ceiling plate is provided on the machine frame side located behind the ceiling, and the inner hook of the Bowden wire for hooking the hook fitting and releasing the pilot valve of the main valve is pulled by the operation handle. A fire hose is connected to a hollow idler boss that rotatably supports the fire hose winding drum above the ceiling fire hydrant and is mounted on the ceiling plate, and a hollow multi-stage cylinder is mounted on a hollow bearing of the hollow idler boss. The ceiling-mounted fire hydrant according to the invention described above, wherein the main valve of the water supply pipe is connected to the uppermost hollow cylinder, and a descent buffer device is provided in the hollow multistage cylinder. Hose slack prevention fence The fire hydrant on the ceiling mounted fire hydrant according to the second aspect of the present invention, wherein the forward / reverse rotating plate is provided at the lower end of the lowermost hollow cylinder and the middle and lower hollow cylinders are supported so as to be capable of rotating forward and backward. The water supply pipe is provided between the take-up drum and the water supply pipe, the position of the water supply pipe is eccentric from the center of the winding drum, both ends of the water supply pipe are pivotally supported by the machine frame, and the hook is replaced by the machine frame. the sideways opening is provided through the partition wall to ceiling hydrant main valve of the first shot bright wherein formed by providing a stretched ceiling plate side, the sideways opening closed with a diaphragm, water flow provided at the center portion of the diaphragm The small hole is closed by a small valve with the force of the spring, and the backwater pressure from the passage communicating with the water pipe is applied to the back of the diaphragm, and the small valve is pulled by the inner against the spring, and the small valve is pulled. Claims 1 to 3 having a pilot valve formed to open 4 constituted by ceiling hydrant according to any one of the invention.
[0007]
[Action]
In the present invention, when the inner handle 7 of the Bowden wire is pulled by operating the operation handle 8 (FIG. 10), the hook fitting 5 is disengaged, and the fire hose winding drum 4 and the fitted ceiling plate 1 are separated from the stretched ceiling plate 1 '. Since the pilot valve 3 'of the main valve 3 of the water pipe 2 is opened and the pilot valve 3' of the water pipe 2 is opened, when the fire hose 10 is pulled, the winding drum 4 idles and pressurized water flows from its tip. Is released, and this can be extinguished by injecting water near the fire source in the room.
[0008]
Also, by pulling the inner wire 7 of the Bowden wire, the hook 5 is disengaged, and the fire hose winding drum 4 and the fitted ceiling plate 1 are lowered from the stretched ceiling plate 1 'by its weight. Upon lowering, the middle and lower hollow multi-stage cylinders 12 ', 12 "are lowered by a certain distance, and are lowered smoothly by the descent buffer devices 13, 13' without lowering.
[0009]
When the winding drum 4 idles, the hose 10 wound on the drum 4 is held by the hose slack preventing fence 14 and does not slack and does not slack. When the tip nozzle 23 of the hose 10 is towed in the required direction, the fence 14 also turns and turns in that direction, and the fence 14 turns following the change in the drawing direction of the hose 10. .
[0010]
6 to 8, since both ends 2 'and 2' of the water pipe 2 are supported by the machine frame 6, when the hook 5 is released, the winding drum 4 and the fitted ceiling plate 1 are connected to the water pipe. 6 from the solid line position in FIG. 6 to the imaginary line position in FIG. 6 around the two end portions 2 ′, and then open the pilot valve 3 ′ of the main valve 3 of the water pipe 2, whereby the main valve 3 Is fully opened, and pressurized water is injected from the water pipe 2 through the nozzle 23 of the hose 10. The hose 10 is pulled by personnel to reach the fire source, at which time the winding drum 4 idles and the hose 10 is extended in the direction of the fire source.
[0011]
When the flexible wire 7 is pulled, the small valve 21 opens the water passage small hole 19 of the diaphragm 18 against the sprung 20, and the back pressure water from the passage 22 communicating with the water supply pipe 2 is supplied from the small hole 19 to the diaphragm. 18 flows out to the main valve 3 side, whereby the diaphragm 18 opens the horizontal opening 17 by the partition wall 16, so that the pressure water in the water supply pipe 2 flows from between the horizontal opening 17 and the diaphragm 18 to the outlet side of the main valve 3. And the main valve 3 is opened. A back pressure chamber 21 ″ is connected to a spool 21 ′ having a small valve 21 via a passage therein, and when the pilot valve 3 ′ is opened, the back pressure chamber 21 ″ is reduced in order to reduce the influence of the pressure on the back of the diaphragm. The pressure is balanced by the chamber.
[0012]
【Example】
A concrete slab 24 separating upper and lower floors and a stretched ceiling plate 1 'suspended from the slab 24 are provided, and a circular or square descendable fitting ceiling plate 1 is provided on the ceiling plate 1'. A fire hose winding drum 4 is freely rotatably supported at the center of the upper surface of the ceiling plate 1, and a water pipe 2 is connected to one end of a hose 10 via a main valve 3 (FIG. 1).
[0013]
A latch (latch) 5 for supporting the fitted ceiling plate 1 in the same plane as the stretched ceiling plate 1 ′ is slidably provided on the machine frame 6 provided on the slab 24, and the hose slack prevention fence 14 is provided. Engage with the upper edge flange 15 '.
[0014]
The hanging ceiling plate 1 is supported on the same plane as the stretched ceiling plate 1 ′ by hooking the hook fitting 5 on the flange 15 ′, and the hook valve and the pilot valve 3 ′ of the main valve 3 of the water supply pipe 2 are connected. The inner (flexible wire 7) of the Bowden wire to be released is connected to the operation handle 8 provided on the side wall 25 'of the chamber. The outer part of the Bowden wire is a flexible outer tube 28 fixed at both ends as shown in FIGS.
[0015]
As shown in FIG. 2, a hollow idle boss 9 for supporting the fire hose winding drum 4 so as to be freely rotatable on the ceiling plate 1 is provided at the center of the drum 4, and the hollow idle boss 9 is provided with a fire hose 10 The hollow multi-stage cylinders 12, 12 ', 12 "are connected to the hollow bearing 11 of the idle boss 9 so as to be extendable and contractible, and the main valve 3 of the water pipe 2 is connected to the uppermost hollow cylinder 12, In addition, the coil spring 13 and / or the air buffer cylinder 13 'are provided in the multi-stage cylinders 12, 12', 12 "to form the descending buffer devices 13, 13 '.
[0016]
A circular forward / reverse rotating plate 15 provided with a hose slack preventing fence 14 is provided at the lower end of the lowermost hollow cylinder 12 ″ on the outer periphery of the winding drum 4, and the middle and lower hollow cylinders 12 ′ and 12 ″ are forward / reverse. It is supported rotatably.
[0017]
As shown in FIGS. 6 to 8, the water pipe 2 is extended between the upper surface of the fitted ceiling plate 1 and the winding drum 4, and the position of the water pipe 2 is set at the center of the winding drum 4. Eccentrically, the ends 2 ′, 2 ′ of the water pipe 2 are bent upward to the outside of the winding drum 4, and the bent upper end is further bent horizontally to bend both ends 2 ′, 2 ′. Is supported on the machine frame 6, and the hook fitting 5 is provided on the stretched ceiling plate 1 'side to form the fire hydrant on the ceiling.
[0018]
As shown in FIG. 12, the main valve 3 is provided with a lateral opening 17 through a partition 16, the lateral opening 17 is closed by a diaphragm 18, and a small water passage 19 provided in the center of the diaphragm 18 is formed. The valve is closed by the small valve 21 by the force of the coil spring 20), and the backwater pressure from the small-diameter passage 22 communicating with the water supply pipe 2 is applied to the back surface of the diaphragm 18, and the small valve 21 is fired by the inner 7 of the Bowden wire. The pilot valve 3 ′ of the main valve 3 is formed by pulling against the (coil spring 20) and opening the small valve 21.
[0019]
Those indicated by Naozu 25 the nozzle holder, FIG. 3 of 26 hollow multistage cylinder 12, 12 ', 12 engaging section in FIG. 27 hydrant operation box for ", 9, 11 of 28 is the inner 7 12 is a flexible outer tube fixed at both ends, 29 in FIG. 12 is a repulsion coil spring weaker than the spring (coil spring 20), 30 is an arm for pulling the flexible wire 7 'for the pilot valve 3', and 31 is an insertion of the wire 7 '. A through hole, 32 is a wire pulling plate provided at the rear end of the wire 7 ', 33 is a reciprocating sliding bracket of the arm 30, and 34 is a guide cylinder of the bracket 33 provided on the machine frame 6. 6 to 8, reference numeral 35 denotes a floating bearing connector between the central portion of the winding drum 4 and the fitted ceiling plate 1, and the winding drum 4 is provided so as to be freely movable.
[0020]
【The invention's effect】
As described above, the present invention can lower the fire hose winding drum into the air with the fitting ceiling plate only by operating the operating handle and pulling the inner wire of the Bowden wire in the early stage of the fire, and then releasing the pilot valve. Water from the water pipe and the main valve immediately by the fire hose described above, and the hose can be extended by idle rotation of the winding drum, and a large amount of water can be sent to the initial fire-extinguishing position (fire occurrence position) where the hose reaches the room, corridor, etc. It has the effect of extinguishing fire.
Then, while the fire hose winding drum is kept horizontal, it can be quickly and smoothly lowered to a certain level by a hollow multi-stage cylinder together with the fitted ceiling plate to extend the hose in all directions.
Further, the fire hose wound around the freely rotatable winding drum is prevented from being loosened by the slack preventing fence, so that the free running can be performed.
Further, a water pipe is inserted at an eccentric position between the ceiling plate and the take-up drum rotatably supported by the ceiling plate, and the take-up drum is rotated around both ends of the water pipe. There is an advantage that the drum can be lowered and the drum can be pivoted down from the tension ceiling plate in the vertical direction, so that the wound fire hose can be quickly pulled and extended in all directions.
In addition, the pilot valve for opening the main valve of the water pipe is opened simultaneously with the lowering of the winding drum from the ceiling by pulling the inner of the Bowden wire with the emergency operation handle, and water is quickly started from the nozzle to start the initial fire setting. is there.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional front view of a ceiling-mounted fire hydrant of the present invention in a lowered state.
FIG. 2 is a longitudinal sectional view of a hollow idle boss portion of the wind-up fire hose.
FIG. 3 is a longitudinal sectional view of a hollow multi-stage cylinder.
FIG. 4 is a longitudinal sectional view of a connection portion between the middle and lower hollow cylinders.
FIG. 5 is an overall view of the fire hydrant lowered state.
FIG. 6 is a front view of a rotary descent ceiling-mounted fire hydrant.
FIG. 7 is a side view of FIG. 6;
FIG. 8 is a plan view of FIG. 6;
FIG. 9 is an enlarged side view of a hook.
FIG. 10 is a front view of the inside of a fire hydrant operation box.
FIG. 11 is a front view of a flexible wire and a handle attaching / detaching portion.
FIG. 12 is a vertical sectional view of a main valve and a pilot valve.
FIG. 13 is an overall view of FIG. 6;
FIG. 14 is an overall view of the fire hydrant turning down state of FIG. 13;
[Explanation of symbols]
REFERENCE SIGNS LIST 1 embedded ceiling plate 1 ′ stretched ceiling plate 2 water pipe 3 main valve 3 ′ pilot valve 4 fire hose winding drum 5 hooking device 6 machine frame 7 inner Bowden wire 8 operation handle 9 hollow idler boss 10 fire hose 11 Hollow bearings 12, 12 '12 "Hollow multi-stage cylinders 13, 13' Lowering shock absorber 14 Hose slack prevention fence 15 Forward / reverse rotation plate 16 Partition wall 17 Horizontal opening 18 Diaphragm 19 Water flow small hole 20 Spring 21 Small valve 22 Passage

Claims (5)

A fire hose winding drum connected to the main valve of the water pipe is freely supported at the center of the upper surface of the descendable fitted ceiling plate, and the fitted ceiling plate is supported in the same plane as the stretched ceiling plate. A fire hydrant installed on a ceiling, wherein a hook is provided on a machine frame provided behind the ceiling, and an inner handle of Bowden wire for releasing the hook of the hook and releasing the pilot valve of the main valve is pulled by an operation handle. A fire hose is connected to a hollow idler boss that supports the fire hose winding drum in a freely rotatable manner on the ceiling plate, and a hollow multi-stage cylinder is connected to a hollow bearing of the hollow idler boss so as to be extendable and retractable. The ceiling-mounted fire hydrant according to claim 1, wherein a main valve of a water pipe is connected to the hollow cylinder, and a descent buffer device is provided in the hollow multi-stage cylinder. A forward / reverse rotating plate provided with a hose slack preventing fence on the outer periphery of the winding drum is provided at a lower end of the lowermost hollow cylinder, and the middle and lower hollow cylinders are supported so as to be capable of rotating forward and backward. Ceiling-mounted fire hydrant as described. The water pipe is provided between the upper surface of the fitted ceiling plate and the winding drum, the position of the water pipe is eccentric from the center of the winding drum, and both ends of the water pipe are supported by the machine frame. and it will be provided instead stretched ceiling plate side hook brackets to the machine frame according to claim (1) Symbol mounting ceiling fire hydrant. The main valve is provided with a horizontal opening through a partition, the horizontal opening is closed with a diaphragm, the small water passage provided in the center of the diaphragm is closed with a small valve by the force of the spring, and communicates with the water pipe. Claims (1) to (4) having a pilot valve formed to apply backwater pressure from a passage to the back surface of the diaphragm, pull the small valve against the sprung by the inner , and open the small valve. The ceiling-mounted fire hydrant according to any one of the preceding claims.

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