JPH061570Y2 - Brake device for fire hose reel - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a reel braking device in which a shape-retaining hose for extinguishing fire is wound, and is used for a fire hydrant installed on a wall surface of a passageway of a building or the like. .

[Conventional technology]

Conventionally, as a fire hydrant installed by being embedded in the wall surface or the like, one in which a shape-retaining hose connected to a water supply pipe is wound around a rotatable reel is known. When a fire breaks out, the fire hydrant box door is opened, and the reel is rotated to pull out the shape retaining hose by pulling it while holding the water discharge tube at the tip of the shape retaining hose.

[Problems to be solved by this proposal]

The winding reel of the conventional shape retention hose described above is usually
There is no brake to control its rotation. Therefore, when the valve is opened, water flows into the shape-retaining hose wound on the drum at a water pressure of about 10 kg per 1 cm ² , so the reaction force of the shape-retaining hose trying to expand into a rod shape causes the reel to rewind. The shape-retaining hose loosens out and gets caught on the reel support frame, etc., and smooth rotation of the reel is blocked, so that the shape-retaining hose cannot be pulled out quickly.

Also, when the shape-retaining hose is pulled out to the required length and stopped, the reel that is rotating continues to rotate due to the pulling force, so the shape-retaining hose also loosens from the reel and gets caught on the frame, etc. It sometimes made subsequent operations difficult.

The present invention solves the above problems and provides a brake device that can be operated in conjunction with the withdrawal of the shape-retaining hose.

[Means for solving problems]

The device of the present invention to solve the above problems is a fire hydrant in which a frame for holding a take-up reel is fixed to a rotating shaft portion on a base, and a column is fixed to the rotating shaft portion to directly face the reel, The column and the upper bent portion of the brake holding plate are fixed to the hinge, and the lower portion of the pulley supporting plate arranged in surface contact with the brake holding plate and the bending portion is fixed to another hinge to fix the pulley supporting plate. A pulley for passing the shape-retaining hose is provided at the tip to face the reel diagonally above, and a tension spring is stretched between the upper surface of the reel and the upper part of the column to constantly pull it toward the column side, and it is attached to both lower sides of the brake holding plate. The gist of the present invention is that a plate is provided so as to project and a brake fixed to the outer circumference of the wheel plate of the reel is fixed to the plate.

[Action]

This device is stored in a fire hydrant box with a retaining hose wound around the drum of the take-up reel during normal times.When the fire opens, the box door is opened and the frame is pulled toward you.
The whole of the brake mechanism attached to the reel and the support column rotates integrally with the entire surface of the box.

And, at all times, the pulley spring pulls the pulley support plate toward the strut with the hinge as a fulcrum, and the lower portion of this pulley support plate presses the bent portion of the brake holding plate fixed to another hinge, so that the brake holding plate is The hinge rotates about the hinge in the reel direction, and the brake comes into contact with the outer circumference of the wheel plate of the reel.

Further, when the shape-retaining hose is pulled out, the pressing force is applied to the pulley, so that the pulley supporting plate pivots downward against the action of the tension spring, and the lower part thereof presses one actuating plate of the hinge so that the other The brake holding plate fixed to the operating plate rotates in the direction of the support column, and the brake separates from the reel.

Further, when the shape-retaining hose is pulled out for a long time and the pulley descends close to the drum of the reel, the lower part of the pulley supporting plate moves separately from the bending part of the brake holding plate and presses only one actuating plate of the hinge deeply. Tilt and rotate.

When the shape-retaining hose is returned to the original position a little during the above-mentioned pulling-out operation to release the pressure on the pulley, the brake comes into contact with the outer circumference of the wheel plate of the reel by the action of the tension spring described above, and the rotation is stopped.

〔Example〕

Hereinafter, the drawings showing an embodiment of the present invention will be specifically described.

In the figure, 1 is a fire hydrant box, 2 is its base, and 3 is a rotary shaft portion rotatably provided on the base, and as shown in FIG. A character-shaped frame 4 is integrally fixed, and a take-up reel (shown by a chain line in the figure) is rotatably mounted on a bearing portion 4a of the frame.

A T-shaped support column 5 is integrally fixed to the rotary shaft portion 3 on the extension line of the center of the frame 4 so as to face the same.
A hinge 6 is attached to the frame side. This hinge 6
As shown in FIG. 4, one of the operating plates 6a is attached to the support column 5
Is fixedly attached to the brake holding plate 7, and the other operating plate 6b is fixed to the upper bent portion 7a of the brake holding plate 7. Further, the brake holding plate 7 is provided with one actuating plate 8a of the second hinge 8.
Is fixed, and the other actuating plate 8b is placed on the pulley supporting plate 9 which is arranged in surface contact with the upper bent portion 7a of the brake holding plate 7.
It is attached to the bottom of the.

Mounting plates 10 are provided on the left and right sides of the lower end of the brake holding plate 9.
Is provided, and the brake 11 made of hard rubber or the like attached thereto is brought into contact with the outer circumference of the wheel plate of the reel (R). Further, a U-shaped bearing 12 is attached downward at the upper end of the pulley supporting plate 9 so as to be swingable right and left by a shaft 13, and a pulley 14 pivotally attached to the bearing 12 is obliquely above the reel (R). And, as shown in FIG. 3,
Spring supports 15 that are projected on both sides of the upper surface of the pulley supporting plate 9
And a tension spring 16 is stretched between the upper end of the column 5 and
The pulley support plate 9 is always pulled in the column direction with the hinge 8 as a fulcrum.

Under normal conditions, this device has a shape-retaining hose wound around the drum of the take-up reel (R) and stored in the fire hydrant box 1. When a fire occurs, the door (not shown) is opened and the frame 4 is in front. When pulled, the rotating shaft portion 3 rotates, and the entire brake mechanism attached to the reel (R) and the column 5 rotates toward the front side of the box (shown by the arrow in FIG. 2).

In this state, the pulling spring 16 pulls the pulley supporting plate 9 toward the column 5 with the hinge 8 as a fulcrum, and the lower portion 9a of the pulley supporting plate 9 presses the bent portion 7a of the brake holding plate 7 fixed to the hinge 6. Therefore, the brake holding plate 7 has a hinge 6
Is rotated in the reel direction with the fulcrum as a fulcrum, and the brake 11 abuts the outer circumference of the wheel plate of the reel (R) to suppress the rotation. Therefore, even if the valve is opened to allow water to pass through, the reel (R) does not rotate due to the reaction force of the shape-retaining hose that tends to become rigid and rod-shaped.

Further, when the water discharge cylinder at the tip of the shape-retaining hose is held and pulled out, the pressing force is applied to the pulley 14 as shown in FIG.
The pulley supporting plate 9 pivots downward against the action of the tension spring 16 and its lower portion 9a presses the actuating plate 8b of the hinge 8, so that the brake holding plate 9 fixed to the other actuating plate 8a supports the strut 5. The brake 11 separates from the reel (R) by rotating in the direction.

Further, when the shape-retaining hose is pulled out for a long time and the pulley 14 descends near the drum of the reel as shown by the one-dot chain line in FIG. 5, the lower portion 9a of the pulley supporting plate 9 does not contact with the bent portion 7a of the brake holding plate 7. It moves separately, and as shown in FIG. 6, only one actuating plate 8b of the hinge 8 is pressed to make a deep tilt rotation. For this reason, the rigid shape-retaining hose has a gentle curve.
Because it is passed through 4, it does not hinder the withdrawal.

Then, when the shape-retaining hose is slightly returned to release the pressure on the pulley 14 during the above-mentioned pulling operation, the brake 11 is actuated by the tension spring 16 as described above.
It comes into contact with the outer circumference of the wheel plate and stops rotating.

〔effect〕

The device of the present invention having the above configuration and operation has the following effects.

(B) Since the pushing force is not applied to the pulley unless the shape-retaining hose is pulled out, the brake is normally in contact with the outer circumference of the wheel plate of the reel, and even if the valve is opened in this state, it becomes rigid like a rod. The reel does not rotate unnecessarily due to the reaction force of the shape retention hose.

(B) Since two hinges are used, the lower part of the pulley supporting plate moves independently of the brake retaining plate and tilts deeply as the shape-retaining hose is pulled out, so that the pulley can be lowered near the reel drum. The rigid shape retention hose can be pulled out without any hindrance with a gentle curve.

(C) By returning the shape-retaining hose slightly and releasing the pressing force on the pulley, the brake can be applied at any position during withdrawal.

[Brief description of drawings]

FIG. 1 is a front view of the device of the present invention, FIG. 2 is a side view seen from the reel side, FIG. 3 is a top view of essential parts, FIG. 4 is an enlarged cross-sectional view of a hinge part, and FIG. FIG. 6 is an enlarged cross-sectional view of the hinge portion during operation. 2 ... Base, 3 ... Rotating shaft part, 4 ... Frame, 5 ... Struts, 6 ... Hinge, 7 ... Brake holding plate, 7a ... Upper bent part, 8 ... Hinge, 9 ... Pulley support plate, 10 ... Mounting plate, 11 ... Brake, 14 ... Pulley, 16 ... Extension spring, R ... Reel.

Claims (1)

[Scope of utility model registration request] 1. A fire hydrant in which a frame for holding a take-up reel is fixed to a rotating shaft portion on a base, and a column is fixed to the rotating shaft portion so as to directly face the reel. The upper bending portion is fixed to the hinge, and the lower portion of the pulley supporting plate arranged in surface contact with the brake holding plate and the bending portion is fixed to another hinge, and the shape-retaining hose is passed through the tip of the pulley supporting plate. A pulley is installed to face the reel diagonally above, and a tension spring is stretched between the upper surface of the reel and the upper part of the column to constantly pull it toward the column side, and mounting plates are projected on both lower sides of the brake holding plate. A brake device for a fire extinguishing hose reel, characterized in that a brake is fixedly attached to the outer periphery of the wheel plate of the reel.