KR101577680B1 - elbow for fire hose reel apparatus - Google Patents

Abstract

The present invention relates to a fire hose reel for a fire hose reel, which can be wound in a clockwise or counterclockwise direction with respect to the lower elbow by rotating the upper elbow in a rotatable manner, .

Description

Elbow for fire hose reel apparatus

The present invention relates to an elbow for a fire hose reel device which can be wound in a clockwise or counterclockwise direction with respect to a lower elbow by connecting the upper elbow with a rotary material so that the direction of winding or unwinding the fire hose is changed according to the door position of the fire extinguisher box, .

As a conventional fire hose reel device, for example, a device disclosed in a patent document (Korean Patent No. 10-1107025) has been proposed.

According to the patent document, the fire hydrant F includes a housing H, a hose reel R housed in the housing H, and a hose reel R fixed to the housing H, A hinge member 10 pivotable for exposure or embedding of the thrill R and a fire hose 20 wound around the hose reel R. [

The housing H is provided with a door H1 and is usually installed in a building wall or in an external exposure system.

The fire hose 20 is connected to the raw water hose 23 which is connected to the fire water source water pipe buried (or exposed) in the wall and is housed in the housing H so as to prevent puncture or breakage. The raw water hose 23 is provided with a valve 25 to open the fire hose 23 and perform a fire fighting operation.

9 and 10, the elbow 40 for a fire hose reel apparatus (referred to as a swing member in the publication) is in tight contact with the central shaft member 30 so as to be watertight, and two discs 50A are provided at both ends, (41A) and (41B) for engagement of the engaging projections (50B) are formed.

The fire water passing through the communication space S formed between the revolving member 40 and the recessed portion 33B passes through the drainage portion 43 of the outer peripheral surface and the curved connection pipe 45 is screwed So that when the fire hose 20 is wound around the hose reel R, the hose 20 can be wound in a circular shape from the beginning, thereby preventing the fire hose from being bent.

The drainage section 43 is biased to one side of the revolving member 40 so that the first winding fire hose 20 is wound sequentially from one side of the hosel R to the other side. The fire hose (20) is also tightly coupled to the end of the curved connecting pipe (45) by the tightening nut (21).

However, since the curved connecting pipe 45 must be screwed to the drainage portion 43 of the revolving member, there is a problem in sealing the fire-fighting water.

Another conventional elbow 40a for solving such a problem is a connecting pipe 40b welded to one end and the other end of the elbow pipe 40a and the elbow pipe 40a and a connecting pipe 40c ).

The elbow pipe 40a has a first tube 41a which is in the direction of the rotation center axis (x axis) of the hose reel and a second tube 41b which is bent in the radial direction (y axis) of the disks 50A, And a third tube 45a bent in the rotational direction z of the disks 50A and 50B in the second tube 43a.

1, the connecting pipe 40b is inserted into a swivel bushing 133 connected to a raw water receiving pipe 131 fastened to the raw water hose 23, (41b) are formed.

The nut 40d is fitted to the outer peripheral surface of the first pipe 41a before the connection pipe 40b is welded.

Further, a flange-shaped projection is formed in the connecting pipe 40b so as to prevent the nut 40d from coming off.

The fastening pipe 40c has a structure in which the fire hose 20 is fastened, and a male screw 41c is formed on the outer peripheral surface thereof.

A projection 43c protruding in the form of a flange is formed on the rear side of the male screw 41c so as not to depart from the fastening region when the fire hose 20 is fastened.

The reason why the conventional elbow 40a is used by welding three parts is as follows.

The first pipe 41a, the second pipe 43a, and the third pipe 45a are formed by bending the extruded pipe by hand in the elbow pipe 40a.

However, as shown in FIG. 8, the first tube 41a and the third tube 45a are inclined with respect to the x-axis and the z-axis, which are orthogonal to each other, with respect to the second tube 43a in the manual bending exertion.

Machining or tapping can not be performed after the mounting groove 41b of the connecting pipe 40b and the male screw 41c of the fastening pipe 40c are bite to the shelf or the like because the center does not fit.

On the other hand, all of the elbows 40 and 40a of the prior art are integrally formed and can be made only in one direction, that is, clockwise or counterclockwise, when the fire hose 20 is wound or unwound.

That is, when the door H1 of the fire extinguisher box F is on the right side as shown in FIG. 8, the hose reel R also hangs on the right side and winds the fire hose 20 counterclockwise. In this case, the position at which the swivel bracket for pivotally supporting the horseshoe R in the digester box F is also determined.

In this state, when the door H1 is on the left side, it interferes with the door H1 when the fire hose 20 of the horseshoe R on the right side is wound or released.

Further, the unidirectional unwinding of the fire hose 20 of the hose reel (R) is difficult to cope with quickly in accordance with the fire condition.

Korean Patent No. 10-1107025

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an elbow for a fire hose reel device capable of winding or releasing a fire hose clockwise or counterclockwise according to a door position of a fire extinguisher box, There is a purpose.

In order to achieve the above-mentioned object, an elbow for a fire hose reel device according to claim 1 of the present invention is an elbow for a fire hose reel device arranged in a revolvable reel, Lower elbow; Upper elbow fastened to fire hose; And an intervening portion to which the upper elbow rotatably connects with the lower elbow.

In the elbow for a fire hose reel apparatus according to claim 2 of the present invention, the lower elbow has a first lower tube along the direction of the rotation axis of the disk, and a second lower tube along the direction of the diameter of the disk, A lower elbow body formed of a lower tube and a nut provided on an outer circumferential surface of the first lower tube, wherein the upper elbow is bent in a first upper tube along a radial direction of the disk and in a first upper tube, And an outer ring formed on the inner surface of the second lower tube and having an outer ring receiving the outer ring of the interposed portion, And an inner ring receiving groove is formed in an outer surface of the first upper pipe to receive the inner ring of the interposed portion.

According to a third aspect of the present invention, there is provided an elbow for a fire hose reel apparatus, wherein the lower elbow body is cast and formed so that the first lower tube and the second lower tube are integral with each other at right angles, Molded so that the first upper tube and the second upper tube are integrally formed at right angles to each other.

In the elbow for a fire hose reel apparatus according to claim 4 of the present invention, a stop ring is further provided on the outer surface of the first lower tube to prevent the nut from being released.

In the elbow for a fire hose reel apparatus according to claim 5 of the present invention, the interposing part is preferably embodied as a ball or a stop ring.

The present invention has the following effects.

By connecting the lower elbow and the upper elbow via the intervening part and connecting the two parts together in a rotatable manner, the fire hose can be wound in a clockwise or counterclockwise direction according to the door position of the fire extinguisher box and the fire scene condition, .

In addition, by molding the elbow body by casting, it is possible to provide a center which is easy to machine, and it can be machined by a chuck of a lathe or the like to process a male screw or a mounting groove, Can be significantly reduced.

Further, by implementing the prevention of disengagement of the nut from the stop ring, it is very convenient to assemble the nut even if the elbow body is molded by casting.

1 is a cross-sectional view of a fire hose reel apparatus to which an elbow according to a preferred embodiment of the present invention is applied;
FIG. 2 is a perspective view of the elbow of FIG. 1; FIG.
Figure 3 is an exploded perspective view of the elbow of Figure 2;
4 is a cross-sectional view showing the main part of Fig.
FIG. 5 is a cross-sectional view of FIG. 3 with the nuts and stop rings removed. FIG.
6 is a cross-sectional view showing a main portion using a stop ring instead of the ball in Fig. 4;
FIG. 7 is a cross-sectional view of FIG. 6 with a stop ring for a nut and a nut removed. FIG.
8 is a perspective view of a conventional fire hydrant.
9 is a front view of a hosiery for a conventional fire hydrant.
10 is an assembled sectional view of a hosel for a conventional fire hydrant.
11 is a perspective view showing another conventional elbow for a fire hose reel device.

Hereinafter, the present invention will be described with reference to the accompanying drawings, wherein like reference numerals are used to designate like parts as those of the prior art, and detailed description thereof is omitted.

1 is a perspective view showing an elbow of FIG. 1, FIG. 3 is an exploded perspective view showing an elbow of FIG. 2, and FIG. 4 is a cross-sectional view showing a main part of FIG. 2, FIG. 5 is a cross-sectional view of FIG. 3 with a nut and a stop ring removed, FIG. 6 is a cross- 6 is a cross-sectional view of the nut and nut shown in Fig. 6 with the stop ring removed.

1, the fire hose reel apparatus 100 mainly includes a pair of left and right discs 50A and 50B and a sleeve 50B fastened to the left and right discs 50A and 50B, A bearing bush 110 which is fastened to the rotation center of the disk 50A, a turning bush 133 which is rotatably inserted around the bearing bush 110, A connecting pipe 131 for the raw water hose 23 to be installed and an elbow 200 inserted and inserted into the inside of the swivel bushing 133.

The swivel bush 133 serves as a rotary shaft of the disk 50A and serves to connect the raw water to the elbow 200 with raw water.

The swivel bush 133 is formed with a locking protrusion 134 on its outer side so as to be caught by both ends of the bearing bush 110 by the locking protrusion 134 and the nut 250A.

Since the swivel bush 133 and the bearing bush 110 are pivotable relative to each other, the disks 50A, 50B can be rotated or the elbows 200 can be pivoted.

A swivel bracket 10 fixed to the digester box or the like is provided outside the disk 50A.

The sleeve 51A is installed at a predetermined interval along the periphery thereof, and the fire hose 20 is wound.

Further, the reinforcing disk plate 53 is welded to each of the sleeves 51A by a reinforcing material to prevent deformation such as collapsing.

Accordingly, the reel is a form in which the fire hose 20 can be wound by at least the disc 50A (50B) and the sleeve 51A.

The elbow 200 is disposed in a reel so as to be pivotable.

That is, the elbow 200 includes a lower elbow 200A, an upper elbow 200B, and an intervening part 200C or 200C 'that rotatably connects the upper elbow 200B to the lower elbow 200A.

The lower elbow 200A is bent at the first lower tube 201A and the first lower tube 201A along the direction (x axis) of the orbiting bush 133 which is the rotation axis of the disk 50A and the diameter of the disk 50A And a nut 250A provided on the outer circumferential surface of the first lower tube 201A. The lower elbow body 210A includes a first lower tube 203A and a second lower tube 203A.

The first lower pipe 201A is inserted into the swivel bush 133.

The nut (250A) is fastened to the male screw of the turning bush (133).

The upper elbow 200B is folded by the first upper tube 201B and the first upper tube 201B along the radial direction of the disk 50A and is wound around the second upper tube 203B along the rotating direction of the disk 50A An upper elbow body 210B and a male screw 270B formed on the outer circumferential surface of the second upper tube 203B.

An outer ring receiving groove 201C in which the outer ring of the interposition part 200C or 200C 'is received is formed on the inner surface of the second lower pipe 203A.

An inner ring receiving groove 203C is formed on the outer surface of the first upper pipe 201A to receive the inner ring of the interposition part 200C or 200C '.

Since the outer surface of the first upper pipe 201B is inserted into the inner surface of the second lower pipe 203A, the mounting groove 235 on which the O-ring 230 is mounted is formed on the outer surface of the first upper pipe 201B Respectively.

On the other hand, a stop ring 240 is further provided on the outer surface of the first lower pipe 201A to prevent the nut 250A from coming off.

In addition, two mounting grooves 225 for the O-ring 220 are formed on the outer surface of the first lower pipe 201A.

The interposing portion 200C or 200C 'may be embodied as a ball 200C as shown in Figs. 1 to 5 or a C-shaped stop ring 200C' as shown in Figs. 6 and 7.

And in the case of the ball 200C, a through hole 205C is formed so as to communicate with the outer ring receiving groove 201C.

When the ball 200C is inserted into the outer ring receiving groove 201C and the inner ring receiving groove 203C through the through hole 205C, the through hole 205C is closed with a screw or the like.

In the case of the stop ring 200C ', the stop ring 200C is inserted into the outer ring receiving groove 201C and the inner ring receiving groove 203C while expanding again after being inserted into the inner ring receiving groove 203C in a contracted state of the stop ring using a jig . In this case, the through hole 205C is not necessary.

As described above, the fire hose 20 can be wound or unwound in either direction depending on the field conditions by constituting the lower elbow 200A and the upper elbow 200B through the intervening part 200C or 200C '.

Further, the lower elbow body 210A and the upper elbow body 210B may be integrally formed by casting.

That is, the lower elbow body 210A, which is formed by casting, forms a single piece in which the first lower pipe 201A and the second lower pipe 203A are integrally formed at right angles.

Likewise, the upper elbow body 210B, which is molded by casting, is a single piece in which the first upper tube 201B and the second upper tube 203B are integrally formed at right angles.

The lower elbow body 210A and the upper elbow body 210B are perpendicular to the first lower tube 201A and the first lower tube 201A along the x axis of the disk 50A in the direction of the axis of rotation of the disk 50A, Along the connecting direction (z-axis) of the rotational direction of the disk 50A, perpendicular to the second lower tube 203A and the first upper tube 201B and the first upper and lower tube 201B along the y- And the second upper tube 203B, so that they are orthogonal to each other with respect to both the x-axis, the y-axis, and the z-axis.

As described above, since it is formed by casting rather than by manual bending, it can be made perpendicular to both the x-axis and the right-angle z-axis with reference to the second lower tube 203A or the first upper tube 201B which is the center of the y- So that the center fits well even if it passes on a chuck of a lathe or the like.

Therefore, the mounting groove 225 and the groove 245 of the first lower pipe 201A can be machined.

The male screw 270B fastened to the fire hose 20 can also be machined on the outer circumferential surface of the second upper tube 203B.

Further, a stopper 275B, which is a flange-shaped projection, is formed behind the male screw 270B by machining.

A method of manufacturing such an elbow for a fire hose reel device will be described.

First, a casting mold for casting the lower and upper elbow bodies 210A and 210B is prepared.

That is, the casting mold of the lower elbow body 210A is perpendicular to the first lower tube 201A and the first lower tube 201A along the x axis which is the rotational axis direction of the disk 50A, And a second lower tube 203A along the y axis.

The casting mold of the upper elbow body 210B has a first upper pipe 201B along the y axis which is the diameter direction of the disk 50A and a second upper pipe 201B perpendicular to the first upper pipe 201B, And a second upper tube 203B along the direction (z-axis).

After the cast lowered elbow body 210A is mounted on the cutting machine, the mounting groove 225 and the groove 245 are formed on the outer surface of the first lower pipe 201A and the inner surface of the second lower pipe 203A The outer ring receiving groove 201C and the through hole 205C are machined.

Then, the nut 250A is inserted into the outer circumferential surface of the first lower pipe 201A, and the O-ring 220 is inserted into the mounting groove 225. [

After the molded upper elbow body 210B is mounted on the cutting machine, a male screw 270B and a stopper 275B are formed on the outer surface of the second upper tube 203B, (203C).

The lower elbow 200A and the upper elbow 200B are rotatably assembled with each other through the interposing part 200C or 200C '.

After the elbow 200 is assembled, the first lower pipe 201A is inserted into the turning bush 133 and then fastened with the nut 250A. Then, the fire hose 20 is screwed to the second upper pipe 203B 270B and wound around the sleeve 51A.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be apparent to those skilled in the art.

10: Turning bracket 20: Fire hose
23: raw water hose 50A, 50B: disk
51A: Sleeve 53: Reinforced disc plate
100: fire hose reel unit 110: bearing bush
131: fastening pipe 133:
134: Jaw 200: Elbow
200A: lower elbow 201A: first lower tube
203A: second lower pipe 210A: lower elbow body
200B: upper elbow 201B: first upper tube
203B: second upper tube 200C, 200C ': interposing part
200C: ball 200C ': stop ring
201C: outer ring receiving groove 203C: inner ring receiving groove
205C: Through hole 220: O-ring
225: mounting groove 230: o-ring
235: mounting groove 240: stop ring
245: groove 250A: nut
270B: Male thread 275B: Stopper

Claims (5)

delete An elbow for a fire hose reel device arranged between left and right discs which can be pivotable reels,
A lower elbow into which raw water flows and which is inserted into a rotating shaft of the reel; Upper elbow fastened to fire hose; An upper elbow rotatably connected to the lower elbow;
Wherein the lower elbow includes a lower elbow body formed by a first lower tube along a direction of a rotation axis of the disk and a second lower tube bent by the first lower tube and along a diameter direction of the disk, And a nut (250A) provided on the outer circumferential surface,
Wherein the upper elbow comprises a first upper tube along a radial direction of the disk and an upper elbow body bent from the first upper tube to a second upper tube along the rotational direction of the disk, And a male screw formed on the male screw,
An outer ring receiving groove in which the outer ring of the interposed portion is received is formed on the inner surface of the second lower tube,
An inner ring receiving groove in which the inner ring of the interposing portion is received is formed on the outer surface of the first upper pipe,
The interposing portion is composed of a stop ring 200C '
And a stop ring (240) for the nut (250A) is further provided on the outer surface of the first lower pipe.
The method of claim 2,
Wherein the lower elbow body is molded and molded so that the first lower tube and the second lower tube are integrally formed as a single piece,
Wherein the upper elbow body is molded and molded so that the first upper tube and the second upper tube are integrally formed at right angles to each other.
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