JPH0614778Y2 - Fire hose reel hose reel braking device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fire hydrant device installed in a tunnel or a building, and more specifically to a hose reel braking device of the fire hydrant device.

2. Description of the Related Art In a conventional fire hydrant device equipped with a rotary hose reel, the rotary hose reel is allowed to rotate forward and backward in order to draw out the nozzle, that is, the hose after the fire is extinguished, and to store the hose after the fire is extinguished. I support you.

Therefore, when pulling out the hose, inertial rotation of the hose reel accompanying pulling out the hose may cause slack in the hose, and even when the hose reel is reversed for winding the hose, the hose reel may rotate unevenly. However, there is a problem such as slack and other disturbances caused by pulling in too much.

Therefore, in order to prevent the slack of the hose that occurs when the hose is being unwound and wound, several guide rollers and guide arms are provided outside the rotary hose reel. (See Japanese Utility Model Publication No. 52-41279) However, the structure of the device is complicated, and the weight is increased, so that the strength of the housing must be increased.

Therefore, in order to brake the inertial rotation of the hose reel, it is conceivable to provide a braking mechanism on the rotation center axis of the hose reel.

Means for Solving the Problems In the conventional hose reel braking mechanism, the brake is not applied unless a large force is applied, so that the structure of the braking portion becomes large and the weight becomes large.

Further, since the braking mechanism is provided in the center of the inside of the hose reel, maintenance such as inspection and repair cannot be easily performed.

The present invention has been made in view of the above circumstances and has an object to effectively brake the rotation of a hose reel with a small force.

Another purpose is to simplify maintenance.

Means for Solving the Problems The present invention relates to a fire hydrant device including a rotary hose reel around which a hose is wound, in which a rotating body is rotatably supported on a base and the base and the rotating body are connected to each other. A braking unit with a ball plunger mechanism installed between them is attached to a support column, and the support column rotates the rotating body of the braking unit on a support body such as a case body or a lid that pivotally supports the rotary hose reel. By providing a pressure contact mechanism for rotatably and rotatably supporting the outer peripheral surface of the rotary hose reel and for pressing the rotating body of the braking unit against the outer peripheral surface of the rotary hose reel, It's something you want to achieve.

Action When the hose is pulled out, the hose reel rotates and rotates the rotating body on the base.

When the rotating body rotates, the ball plunger mechanism operates and brakes the rotating force of the rotating body, so that the rotation of the hose reel is also braked.

Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings, in which the same reference numerals have the same names and functions.

Joint 2 for connecting to a water supply source in the housing 1 of the forward tilting fire hydrant device
The water supply pipe 3 for the fire brigade and the main valve (fire hydrant valve) 4 are connected to the joint 2.

An automatic pressure regulating valve 5 and an automatic drain valve 36 with a safety valve are sequentially provided on the secondary side of the main valve 4.

The automatic pressure regulating valve 5 is a valve for adjusting the water discharge pressure on the secondary side of the main valve 4 to a predetermined pressure, and the automatic drain valve 36 with a safety valve opens at a first predetermined pressure or less, The valve is opened at a second predetermined pressure that is higher than the first predetermined pressure, and the first predetermined pressure and the second
It is a valve that closes at a predetermined pressure of.

The automatic drain valve 36 with a safety valve is connected to a nozzle 35 with an opening / closing valve via a hose 33 wound around a rotary hose reel 38.

The hose reel 38 is rotatably provided on a reel turntable 50 inside the forward tilting door 30.
It is braked by the brake 37. The brake 37 includes a braking portion 51 and a pressure contact mechanism 52.

The braking portion 51 is provided with a screw 5 on the brake base (support pillar) 53.
The disk (base) 55 fixed by 4, and the disk 55
A rotating body 56 rotatably supported on the upper side, and a disk 55.
And the ball plunger mechanism 57 provided between the rotating body 56
It consists of and. A tire 58 having an uneven outer peripheral surface 58a is provided on the outer periphery of the rotating body 56, and the diameter of the tire 58 is extremely smaller than the diameter of the hose reel 38, for example, 1/10. It is formed.

The ball plunger 57 has a ball groove 59 of the disc 55.
And a spring 61 for pressing the ball 60 against the disc 55.

This braking portion 51 is provided with a bolt 63 via a bearing 62.
Is rotatably provided. The brake base 53 is fixed to a mounting base 65 via a nut 64, and the mounting base 65 is fixed to a forward tilting door 30 (support) 30 that pivotally supports the rotary hose reel 38.

The press-contact mechanism 52 includes a spring 52 stretched between the forward tilting door 30 and the brake base 53. The spring 52 pulls the tire 58 in the hose withdrawing direction to press-contact the outer peripheral surface of the hose reel 38. Let

Next, the operation of this embodiment will be described.

When a fire occurs, a driver or the like opens the front tilting door 30 of the housing 1,
The nozzle 35 is moved to the fire extinguishing point while pulling out the hose 33 while pulling the operation handle 31 and grasping the half-opened handle 9 to remove the nozzle 35 from the nozzle holder 34. Then, the rotary hose reel 38 rotates in the hose withdrawing direction A38, and rotates in the A58 direction while pulling in the tire 58 that is in contact with the outer peripheral surface 58a of the hose reel. At this time, since the outer peripheral surface 58a of the tire is formed in an uneven shape, a large frictional force is generated between the outer peripheral surface 58a of the hose reel and the outer peripheral surface 38a.

Therefore, the rotational force of the hose reel 38 is directly transmitted to the tire 58.

When the tire 58 rotates, the brake ball 60 also rotates in the same direction, but during the rotation, the ball 60 sequentially moves in and out of the plurality of ball grooves 59 of the disc 55, and brakes in small steps as the tire 58 rotates. multiply.

Therefore, the hose reel 38 that is in contact with the tire 58 is also braked, and inertial rotation caused by pulling out the hose is braked.

In addition, when winding the hose, the hose reel is
Since the hose reel 38 is rotated while being flipped up, the hose reel 38 can be rotated with a light force.

When the main valve 4 is opened, the fire extinguishing liquid of the water supply source is sequentially discharged from the nozzle 35 through the automatic pressure regulating valve 5, the branch portion of the automatic drainage valve 36, and the hose 33.

Effect of the Invention Since the hose reel braking device of the fire hydrant device according to the present invention is configured as described above, the following remarkable effects are exhibited.

(1) Since the braking portion is provided on the outer periphery of the hose reel, unlike the conventional example, the braking can be applied with a small force, and the structure of the braking portion can be made compact and lightweight.

Further, since it is easy to inspect and repair the braking portion, it is possible to simplify the maintenance.

(2) Since the pressure contact mechanism for pressing the rotating body of the braking unit against the outer peripheral surface of the rotary hose reel is provided, the rotating body and the hose reel are always in pressure contact.

Therefore, the rotational force of the hose reel is accurately transmitted to the rotating body, so that the hose reel is reliably braked.

(4) When the rotating body of the braking portion is a tire having an uneven outer peripheral surface, the contact pressure with the hose reel does not become high, so the braking effect can be enhanced.

(5) If the pressure contact mechanism is a spring that pulls the rotating body in the hose withdrawal direction, the pressure contact force increases when the hose reel rotates in the hose withdrawal direction, so the inertial rotation of the hose reel when the hose is withdrawn quickly. It can be stopped and the hose reel can be rotated with a light force when winding the hose.

[Brief description of drawings]

1 to 4 are views showing an embodiment of the present invention.
The drawing is a side view, FIG. 2 is a side view taken along the line II-II of FIG. 1, FIG. 3 is a plan view of the brake, and FIG. 4 is a sectional view of the brake. 30 ... Front-tilt door 38 ... Hose reel 38a ... Outer surface of hose reel 51 ... Braking part 52 ... Press contact mechanism 53 ... Support column 55 ... Base 56 ... Rotating body 58a ... Outer periphery of tire Surface 57: Ball plunger mechanism

Claims (4)

[Scope of utility model registration request] 1. A fire hydrant apparatus comprising a rotary hose reel around which a hose is wound, wherein a rotating body is rotatably supported on a base and a ball plunger mechanism is provided between the base and the rotating body. The braking part provided is attached to a support pillar, and the support pillar is used as a support body such as a housing body or a lid that pivotally supports the rotary hose reel, and the rotary body of the braking part is an outer peripheral surface of the rotary hose reel. A hose reel for a fire hydrant device, which is rotatably and rotatably supported on the hose reel and is provided with a press contact mechanism for press contacting the rotating body of the braking unit with the outer peripheral surface of the rotary hose reel. Braking device. 2. The hose reel braking device for a fire hydrant device according to claim 1, wherein the rotating body of the braking portion is a tire having an outer peripheral surface having an uneven shape. 3. The diameter of the rotating body is formed to be smaller than the diameter of the rotary hose reel.
Alternatively, the hose reel braking device of the fire hydrant device according to the second aspect. 4. The hose reel braking device arrangement for a fire hydrant device according to claim 1, 2, or 3, wherein the pressure contact mechanism is a spring that pulls the rotating body in the direction of pulling out the hose.