JPH074822Y2 - Firefighting water gun - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a water spray gun for firefighting, in which a cylinder tip is inserted from a lower floor into a circular hole formed in the floor of a veranda in advance, and water is sprayed toward the fire chamber. Regarding

[Conventional technology]

Conventionally, in the water spray gun, it is known that the upper water pipe, which is a curved pipe shown in FIG. 4, and the lower water pipe, which is a curved pipe, are joined by a U-shaped joint water pipe as a water pipe. As a power transmission device for movement, one using a worm gear shown in FIG. 5 and one using a lever shown in FIG. 4 are known (for example, Japanese Utility Model Publication No. 56-9487 and Japanese Utility Model Publication 5).
No. 7-3325, No. 57-8846, No. 57-20225
JP, JP 58-18912, JP 58-26681 and JP 63-5736).

[Problems to be solved by the device]

No water spray gun for fire fighting intended for use in the environment mentioned in the field of industrial application has yet been developed. Dare
When the conventional technique is applied, the size of the hole in the floor of the veranda for passing the joint portion constituted by the U-shaped curved pipe of the water pipe becomes 2 to 3 times the diameter of the water pipe. Opening such a large-diameter hole on the balcony becomes a problem from the viewpoint of comfortability even if the lid is provided in normal times, and from the viewpoint of economical efficiency and work efficiency related to drilling work. Is also not preferable.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to open a tip portion including a joint portion of a water spray gun for fire fighting to a diameter of a water pipe substantially. Another object of the present invention is to provide a water spray gun for fire fighting, which can pass through a through-hole in the floor of the veranda and can cause the nozzle to raise and lower and swivel by operating from below the veranda floor.

[Means for Solving the Problems]

In order to achieve the above object, the water spray gun for fire fighting according to the present invention is formed by joining a flat plate with a water passage hole to a vertically divided part of an eaves trough-shaped curved plate in which a cylinder is approximately vertically divided in half along a center line. The upper water passage, which is formed by joining the closing plate to one end of the cylinder and the nozzle mounting plate to the other end, and the eaves trough-shaped part in which the cylinder is cut in half along the center line from the one end, and the other end. The part that was left as a cylinder at the end of
The female of the fire hose connecting fitting is closed at the lower end of the cylinder formed by joining the flat plate with water passage holes to the notched part of the notched cylinder consisting of the diagonally cut part so that both parts are smoothly connected, and the upper end is closed A joint consisting of an outer housing joined to the outer periphery of the plate hole of the upper water pipe, a housing joined to the outer periphery of the plate hole of the lower water pipe, and a deep groove ball bearing On the water pipe joined to the water pipe, the box-shaped bearing fixed to the flat plate of the lower water pipe, the shaft supported by the box-shaped bearing, the drive sprocket fixed to this shaft, and the outside of the outer housing. The driven sprockets joined together, the transmission roller chain hung around both sprockets, the wheel of the worm gear fixed to the same shaft as the drive sprocket, and the pair of wheels. Boom, a universal joint fixed to the shaft of the worm, and a depression / elevation transmission device consisting of a lifting / lowering handle attached to the universal joint, a nozzle at the tip of the upper water pipe, and a cylinder at the bottom of the lower water pipe. It is provided with a turning flange joined around and a turning device composed of a turning handle mounted perpendicularly to the axis of the water pipe.

The length of the joint water pipe should be as short as possible, and the diameter of the driven sprocket should not be larger than the width of the flat plate of the lower water pipe, and the joint part perpendicular to the lower water pipe when the upper water pipe is directed right above. In the cross section, by making the approximately semicircular portions of the upper and lower water pipes overlap the circumscribed circle of the joint, the ratio of the sum of the water cross-sectional areas of the upper water pipe and the lower water pipe to the area of the circumscribed circle It is preferable to make it large.

Also, regarding the size of the water passage of each water pipe, make the lower water pipe the largest, then the joint water pipe, and the upper water pipe to the minimum, and the nozzle from the inscribed circle of the cross section of the upper water pipe. It is preferable to install the one that does not protrude.

Further, it is preferable that the driving sprocket and the driven sprocket have the same size.

[Action]

In a firefighting water gun, the driven sprocket is positioned above the top surface of the floor with the upper water pipe facing directly above the floor hole of the veranda that has been drilled slightly larger than the diameter of the cylinder at the lower end of the lower water pipe. , And the drive sprocket can be inserted from the floor directly below for any length within the range below the lower surface of the floor.

When the handle for raising and lowering is rotated to rotate the worm of the worm gear via the universal joint, the drive sprocket that is fixed coaxially with the wheel that is paired with the worm rotates. The rotation of the drive sprocket is transmitted to the driven sprocket by the transmission roller chain.
The left-right rotational movement of the driven sprocket becomes the elevation movement of the nozzle through the outer housing of the joint water pipe and the upper water pipe.

Utilizing the fact that the hose fittings for fire fighting freely rotate between male and female, insert the lower water pipe below the swivel flange into the hole of the support leg that has a hole in the table at the upper end, and fire the lower water pipe. By connecting the male of the fire hose and turning the turning handle, the nozzle can be turned without twisting the fire hose.

〔Example〕

 Examples will be described with reference to the drawings.

In FIG. 1, the embodiment comprises a water spray gun for fire fighting according to the invention, which is composed of a nozzle A and a water pipe B, an intermediate connecting pipe D, a lower connecting pipe E and a support leg F. Name it.

In Fig. 2a, the water pipes are the upper water pipe Ba and the lower water pipe Bb.
And a joint water pipe Bc, a depression / elevation force transmission device, and a turning device.

The lower water pipe has, for example, a thickness of 2 mm, an outer diameter of 10 cm, and a length of 2 m.
About 10 mm from the center line of the steel pipe, make a vertical cut from one end of the pipe to about 150 cm, and make a center angle of the cross section of the two eaves-shaped parts formed by the cut. From the front edge of the incision to the larger side of the, cut diagonally leaving a cylindrical portion of about 10 cm at the other end of the tube,
The flat plate 2 made of stainless steel is joined to the opening portion formed by cutting and cutting the side 1b having the cylinder among the two separated pieces. The lower water pipe is formed by joining the female 20a of the fire hose coupling fitting to the cylindrical end of the prepared cylinder and joining the stainless steel closing plate to the end where the cut has started. As the flat plate 2, specifically, in FIG. 3a, a flat plate 2b with a water passage hole having a diameter of about 60 mm, which communicates with the joint water pipe and having a thickness of 3 mm and a length of about 10 cm, is provided at the opening portion of the lower water pipe. Bonding is performed adjacent to the closing plate, and a plate 2b 'having a thickness of about 2 mm is bonded to all openings below the closing plate.

The upper water pipe is a stainless steel pipe with the same outer diameter and thickness as the steel pipe used for the lower water pipe, and a length of about 15 cm.
It can be made by vertically cutting the steel pipe about 10 mm away from the center axis 2
Of the curved plates, a stainless steel flat plate 2a with a water passage hole of about 3 mm with a hole of about 85 mm in diameter that opens to the joint water passage pipe is covered so as to cover the entire cut part of the smaller one 1a of the cross section. Create by joining. The upper water pipe Ba is formed by joining a stainless closing plate to one end of the created cylinder and joining a stainless nozzle mounting plate 19 to the other end. Nozzle mounting holes are made in the nozzle mounting plate, and threading for screwing is performed.

In FIGS. 3a and 3b, the joint water pipe is manufactured by fitting the deep groove ball bearing 3 into the inner housing 5 and the outer housing 4. Deep groove ball bearing has inner diameter 65mm, outer diameter 85mm, width 10mm
Use something of a degree. Inner housing has an inner diameter of 65 mm
The outer housing is made of stainless steel with an outer diameter of about 88 mm.

In FIGS. 2a and 2b, the transmission roller chain 12 has a single row and a total pin length of about 10 mm. The driven sprocket 6 is a flat plate having an outer diameter not exceeding 10 cm, and is processed so that the hole diameter for the shaft is equal to the outer diameter of the outer housing of the joint water pipe, and the fitted sprocket 6 is fitted into the outer housing and joined. The drive sprocket 7 has the same outer diameter as the driven sprocket. The drive sprocket is fixed to the same shaft 9 as the wheel 10 of the worm gear. The shaft 9 and the shaft 14 of the worm 13 forming a pair with the wheel 10 form a box-shaped bearing 8 made of stainless steel and supported by this. More specifically, the box-shaped bearing is formed by joining two bearing plates 8a and 8b into which the left and right ends of the shaft 9 are inserted, respectively, and a pair of bearing plates 8d into which the left and right ends of the shaft 14 are inserted, to a pair of side plates 8c. create. The bearing plate 8b is provided with a portion protruding to the left and right of the side plate 8c. On the other hand, the flat plate 2b 'of the lower water pipe is also provided with an overhanging portion at the portion where the box-shaped bearing is located, like the bearing plate 8b. Plural oval holes for tightening screws are formed in the projecting portions of the flat plate 2b 'and the bearing plate 8b. Pass the screw 23 through the oval hole and temporarily fix the box-shaped bearing to the flat plate 2b ', then pull the box-shaped bearing downward to remove the slack of the transmission roller chain and tighten the screw of the screw to flatten the box-shaped bearing. Fix it to 2b '. The shaft of the worm is penetrated to the lower side of the bearing plate 8d, and one end of the universal joint 15 is coupled to the penetrated portion. A female screw is machined on the other end of the universal joint, and an eyebolt having a ring with a diameter of about 3 cm is screwed in. The elevation handle 16 is made by processing a hook on the tip of a steel rod bent in a crank shape. The hooks and eyebolts are adjusted to form a removable joint. A flange-like stopper (17) for preventing excessive insertion into the hole of the fire-fighting water gun is joined around the lower water pipe directly above the box-like bearing. In addition, the tip of the shaft 9 is penetrated to the outside of the bearing plate 8a, and the nozzle direction indicator needle 11 is attached to the protrusion.
Attach.

The nozzle A is cast from an aluminum alloy or a copper alloy so that the water passage section becomes thinner toward the tip. Thread processing is applied to the base of the nozzle.

The support leg G has an inner diameter slightly larger than the outer diameter of the female of the hose coupling fitting, and has a circular perforated table 18 with a flange width of about 50 mm and four legs, and the height of the table surface is approximately 150 cm. To be manufactured. It is preferable that the table height can be adjusted by adopting a foot whose length can be changed and adjusting the opening of the foot by an adjusting chain.

The connecting pipe to be inserted between the fire-fighting water gun and the support leg is used according to the height between the floor and the ceiling of the veranda. The lower connecting pipe E is about 100 cm in length and the intermediate connecting pipe is 50 cm. D
Consists of. The pipe of the connecting pipe is made of the same stainless steel pipe as the water passage pipe, and the male and female of the fire hose coupling fitting are joined to the upper and lower ends of the pipe, respectively.

Swinging equipment will be attached to the water gun for fire fighting and the middle and lower connecting pipes. In Fig. 2a, the swivel device 24 attached to the lower part of the fire fighting water gun and the upper part of the intermediate connecting pipe is the swivel flange 24
a, a turning handle 24b, a metal fitting mounting collar 24c, and a turning force transmission metal fitting 24d. The swivel flange 24a has a thickness of 4 mm
With a stainless steel plate of approximately the same size, the inner diameter is made equal to the outer diameter of the water pipe, and the outer diameter is made equal to the outer diameter of the table of the supporting legs, and it is joined to the lower water pipe above the female fitting for hose connection at the bottom of the fire gun To do. The turning handle 24b is made of a steel rod having a diameter of 10 mm and a length of about 10 cm, and is joined to the upper surface of the turning flange. If you do not need a connecting pipe, insert the lower part of the fire-fighting water gun into the hole in the table of the supporting leg, and contact the lower surface of the swing flange with the upper surface of the table of the supporting leg to support the fire-fighting water gun and use it for turning. Turn the handle to swivel the fire cannon. When connecting a connecting pipe to a fire fighting water spray gun, it is necessary to restrain the free rotation of the fire hose coupling fitting between male and female. As a member for this purpose, a metal fitting mounting collar 24c is joined just below the male of the hose coupling fitting at the upper end of the connecting pipe, a metal fitting mounting collar 24c is joined directly under this male, and a steel rod with a diameter of about 6 mm is attached to this collar. The turning force transmission metal fitting 24d made by bending the shape is joined. On the other hand, a hole with a diameter of about 8 mm was opened in the swivel flange, and when the male 20b and female 20a of the hose coupling fitting were joined, the tip of the swivel force transmission fitting was inserted into this hole, and the water gun for fire fighting and the connecting pipe So that they make a swivel motion together. The swivel device 25 is also manufactured and attached to the lower part of the intermediate connecting pipe and the upper part of the lower connecting pipe in the same manner as in the lower part of the water spray gun for fire fighting and the upper part of the intermediate connecting pipe. A swivel flange and swivel handle similar to those in the lower part of a fire water cannon are attached to the lower part of the lower connecting pipe.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

For fires in high-rise homes that do not have sprinkler equipment and the ladders of ladder cars are inaccessible, making effective fire extinguishing activities difficult The intermediate connecting pipe, the lower connecting pipe, and the support legs are disassembled and carried in, assembled and installed, and a fire water cannon is inserted from the lower floor side into the circular hole previously opened on the floor of the balcony of the fire room. By operating the handle for lifting and turning from the balcony on the lower floor, the tip of the fire-fighting water gun can be directed to the fire chamber, and the fire hose can be connected to the hose connecting fitting of the veranda water gun to discharge water.

[Brief description of drawings]

Figure 1 is a general veranda water gun installation state diagram, 2a
Fig. 2 is a front view of a fire-fighting water gun, Fig. 2b is a cross-sectional view taken along the line X-X of Fig. 2a, Fig. 3a is a cross-sectional view of an essential part at the tip of a fire-fighting water gun, and Fig. 3b is Fig. 3a. It is a principal part sectional view in the YY line of FIG. Also, FIGS. 4a, 4b and 5 are schematic views of a conventional water gun, and FIG. 4b is a side view of FIG. 4a. A ... Nozzle, B ... Water pipe, Ba ... Upper water pipe, Bb ...
... Lower water pipe, Bc ... Joint water pipe, D ... Intermediate connecting pipe,
E ... Lower connecting pipe, F ... Support leg, G ... Fire hose, 1a ... Eaves gutter plate, 1b ... Notched cylinder, 2a, 2b ... Flat plate with water passage hole, 2b '... Flat plate, 3 ... Deep groove ball bearing, 4,
5 ... Housing, 6 ... Driven sprocket, 7 ... Drive sprocket, 8 ... Box bearing, 8a, 8b, 8d ... Bearing plate, 8c ... Side plate, 9, 14 ... Shaft, 10, 13 ... … Warm gear, 11 …… Nozzle direction indicator, 12 …… Transmission roller chain, 15 …… Universal joint, 16 …… Suspension handle, 17 …… Stopper, 18 …… Perforated table, 19 …… Nozzle mounting plate , 20, 21, 22 …… Fire hose fittings, 20a …… Hose fittings female, 20b …… Hose fittings male, 23 …… Screws, 24, 25, 26 …… Swing device, 24a
...... Swivel flange, 24b ...... Swivel handle, 24c …… Mounting collar, 24d …… Swivel force transmission bracket

Claims (1)

[Scope of utility model registration request] 1. An end of a cylinder formed by joining a flat plate (2a) with a water passage hole to a vertically divided portion of an eaves trough-shaped curved plate (1a) in which a cylinder is substantially vertically divided in half along a center line. An upper water pipe (Ba), which is formed by joining a nozzle mounting plate (19) to the other end of the closing plate, and an eaves trough-shaped part in which a cylinder is roughly split in half along the centerline from one end of the cylinder and the other. The flat plate (2b) and the flat plate (2b ') with water passage holes are joined to the cutout part of the cutout cylinder (1b) consisting of the part left as a cylinder and the part cut diagonally so as to smoothly connect both parts. The female (20a) of the fire hose coupling fitting is attached to the lower end of the cylinder formed by the above, and the lower water pipe (Bb) formed by joining the closing plate to the upper end of the pipe of the flat plate (2a) of the upper water pipe. An outer housing (4) joined to the outer circumference, an inner housing (5) joined to the outer circumference of the hole of the flat plate (2b) of the lower water pipe, and a deep ball bearing (3)
Box-shaped bearing (8) fixed to the flat plate (2b ') of the lower water pipe to the water pipe (B) joined to the joint water pipe (Bc)
A shaft (9) supported by a box-shaped bearing and perpendicular to the flat plate (2b '), a drive sprocket (7) fixed to the shaft, and a driven sprocket (6) joined to the outer periphery of the outer housing. , Transmission roller chains hung around drive and driven sprockets (12)
A worm gear wheel (10) fixed to the same shaft as the drive sprocket, a worm (13) paired with the wheel, a universal joint (15) fixed to the worm shaft (14), and a universal joint The elevation water transmission device consisting of the elevation handle (16) attached to and the nozzle A at the tip of the upper water pipe, and the joint water pipe and the elevation water transmission device face upwards. A water spray gun for fire fighting, which is located inside a virtual cylinder in which the lower water pipe and the lower water pipe are inscribed, and which raises the nozzle by operating below the lower water pipe.