JPH06228A - Tower type fire extinguishing device - Google Patents

Abstract

PURPOSE:To provide a tower type fire extinguishing device which can reduce the driving force for elongating and shrinking the tower by incorporating a lightweight construction in its top part where a nozzle to flush an extinguishing agent is mounted. CONSTITUTION:A tilt controlling motor 11a for a nozzle 6 and a motor 11b for controlling the pan are installed below the first stage tower 1 located at the undermost, and the torques of these motors 11a, 11b are transmitted to the fourth spline shafts 41a, 41b, respectively, via chains 14a, 14b, the second stage spline shafts 21a, 21b, chains 22a, 22b, the third stage spline shafts 31a, 31b, and chains 32a, 32b. The rotating direction of the fourth stage spline shaft 41a is converted into the tilting direction by the final stage driving gear 51a and transmitted to the nozzle 6, while the rotation of the fourth stage spline shaft 41b is transmitted held as it is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tower type fire extinguisher for extinguishing a fire by discharging a foam extinguishing agent or a powder extinguishing agent from a nozzle provided at an upper end of a tower.

[0002]

2. Description of the Related Art Conventionally, tower fire extinguishers of this type have a trolley as shown in Japanese Patent Publication No. 3-57788 or are fixed to a fire boat as shown in Japanese Patent Publication No. 3-31320. What is done is disclosed. In this fire extinguisher, a nozzle for discharging foam fire extinguisher or powder fire extinguisher is provided at the upper end of a lifting or retractable tower, and the swivel angle (pan direction) and elevation angle (tilt direction) of this nozzle are controlled. A fire extinguishing agent or powder fire extinguishing agent is discharged to the fire position by remotely controlling the motor.

[0003]

However, in the above-mentioned conventional tower type fire extinguisher, since the motor for controlling the pan direction and the tilt direction of the nozzle is provided at the upper end of the tower, the upper end becomes heavy, There is a problem that a large driving force is required to extend and contract the tower. In particular, this problem becomes remarkable when trying to satisfy the requirement of raising the tower in order to raise the discharge position of the nozzle.

In view of the above-mentioned conventional problems, the present invention provides a tower fire extinguisher capable of reducing the driving force for expanding and contracting the tower by reducing the weight of the upper end of the tower provided with a nozzle for discharging a fire extinguishing agent. The purpose is to do.

[0005]

In order to achieve the above-mentioned object, the present invention has a plurality of towers that can be expanded and contracted in the vertical direction, and a nozzle that discharges the extinguishant can be tilted to the uppermost tower and pan. In a tower-type fire extinguisher that is movably attached, a first one that is provided in the lowest tower and that rotates the nozzle in a tilt direction and a pan direction, respectively.
A second motor and at least each tower above the bottom tower is supported with its axis extending vertically.
A plurality of pairs of spline shafts rotatable by the first and second motors, a plurality of pairs of chains connecting the pair of spline shafts arranged in the upper and lower towers, and rotated by the first motor A gear mechanism that converts the rotation direction of the spline shaft of the uppermost tower into the tilt direction of the nozzle and transmits it to the nozzle, and the rotation of the spline shaft of the uppermost tower that is rotated by the second motor in the pan direction of the nozzle. And a gear mechanism for transmitting to.

[0006]

According to the present invention, with the above-described structure, the rotation of the first and second motors provided in the lowermost tower is controlled by the pair of spline shafts and chains provided in the respective towers of the uppermost tower. It is transmitted to a pair of spline shafts. Then, the rotation direction of the spline shaft of the uppermost tower rotated by the first motor is converted to the tilt direction of the nozzle and transmitted to the nozzle, and the rotation of the spline shaft of the uppermost tower rotated by the second motor is transmitted. The rotation is transmitted in the pan direction of the nozzle.

Therefore, since the first and second motors for rotating the nozzle in the tilt direction and the pan direction, respectively, are provided in the lowermost tower, the weight of the upper end of the tower is reduced and the tower is expanded and contracted. The driving force of can be reduced.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a rear sectional view showing a nozzle drive mechanism in a state where a tower is extended in an embodiment of a tower fire extinguisher according to the present invention, and FIG. 2 is a right side sectional view showing the fire extinguisher of FIG. is there. As an example, the tower type fire extinguisher of this embodiment is composed of four-stage telescopic towers 1 to 4. A nozzle support 5 that can swivel (pan) in the horizontal direction is attached to the uppermost fourth-stage tower 4, and a nozzle 6 that discharges a foam extinguishant or a powder extinguishant is vertically attached to the nozzle support 5. It is supported so that it can swivel (tilt).

Below the lowermost first stage tower 1, a tilt control motor 11a for the nozzle 6 and a pan control motor 1 are provided.
1b is attached to the towers 2 to 4 of the second to fourth stages, the second to fourth stage spline shafts (21a, 21b),
(31a, 31b) and (41a, 41b) are respectively supported in the vertical direction. In addition, the rotational force of the motors 11a and 11b of the first-stage tower 1 in which splines are formed in the axial direction on the spline shaft is transmitted to the second-stage spline shaft 21 via the transmission chains 14a and 14b, respectively.
a, 21b, the second stage spline shafts 21a, 2
The rotational force of 1b is applied to the transmission chains 22a and 22b, respectively.
Is transmitted to the third stage spline shafts 31a and 31b, and the rotational force of the third stage spline shafts 31a and 31b is transmitted to the fourth stage spline shafts 41a and 41b via the transmission chains 32a and 32b, respectively. That is, all the spline shafts are rotatable about the vertical direction, that is, in the nozzle pan direction.

The tip of the fourth stage spline shaft 41a for tilting and the nozzle supporting portion 5 are provided with a final stage drive gear 51a for converting the rotation direction of the fourth stage spline shaft 41a into the tilt direction, and The tip of the fourth stage spline shaft 41b for pan and the nozzle support part 5 are provided with a final stage drive gear 51b for transmitting the rotation direction of the fourth stage spline shaft 41b to the nozzle support part 5 without changing it. Has been. Therefore, when the tilt control motor 11a rotates, the nozzle 6 tilts with respect to the nozzle support portion 5, and when the pan control motor 11b rotates, the nozzle 6 pans together with the nozzle support portion 5.

As for the towers 1 to 4, in the normal state, as shown in FIGS. 3 to 5, the tower 4 of the fourth stage is housed in the tower 3 of the third stage, and the tower 3 of the third stage is the first. The size and shape are such that the two-stage tower 2 is housed, and the second-stage tower 2 is housed in the first-stage tower 1. 3 is a rear sectional view showing the stored state of the tower, FIG. 4 is a plan view showing the stored state of the tower of FIG. 3, and FIG. 5 is a right side sectional view showing the stored state of the tower of FIG. FIG. 6 is a side view showing the lifting mechanism of the tower.

The tower lifting mechanism will be described with reference to FIG. 6. In the tower 1 of the first stage, a tower lifting motor 15 is provided.
Is provided, the rotating drum 16 is attached above, the rotating drums 23 and 24 are attached below and above the second stage tower 2, and the rotating drum 33 is provided below and above the third stage tower, respectively. , 34 are attached. The wire 17 has a motor 15 at one end.
Connected to the rotary shaft of the rotary drum 16, 23, 24, 3
It is wound around 3, 34 and the other end is fixed below the fourth stage tower. Therefore, when the motor 15 rotates, the towers 2 to 4 move up and down with respect to the lower towers 1 to 3, and the height of the nozzle 6 is adjusted.

Therefore, according to the above embodiment, the motor 1 for rotating the nozzle 6 in the tilt direction and the pan direction.
Since 1a and 11b are provided in the lowermost first tower 1,
The driving force of the motor 15 for expanding and contracting the towers 2 to 4 can be reduced by reducing the weight of the upper end of the tower. In addition,
The mechanism for discharging foam extinguishing agent and powder extinguishing agent from the nozzle 6 is
Although omitted in the drawing, a known device can be used, and this device may be configured to be movable by a dolly or a mobile vehicle, or may be fixed to a fireboat.

FIG. 7 shows a modification, in which the tilt control motor 11 for the nozzle 6 is provided below the lowermost first stage tower 1.
a and a pan control motor 11b are attached, and the rotational forces of the motors 11a and 11b are the first stage drive gears 12a and 12b and the splines are the first stage drive gear 1 respectively.
It is transmitted upward through the first-stage spline shafts 13a and 13b which are vertically supported by 2a and 12b so that they can be meshed with each other.

As in the above embodiment, the rotational force of the first stage spline shafts 13a and 13b is transferred to the second stage spline shaft 21 via the transmission chains 14a and 14b, respectively.
a, 21b, the second stage spline shafts 21a, 2
The rotational force of 1b is applied to the transmission chains 22a and 22b, respectively.
Is transmitted to the third-stage spline shafts 31a and 31b, and the rotational force of the third-stage spline shafts 31a and 31b is transmitted to the fourth-stage spline shafts 41a and 41b via the transmission chains 32a and 32b, respectively. The nozzle support 5 tilts when the tilt control motor 11a rotates, and the nozzle support 5 pans when the pan control motor 11b rotates.

Therefore, according to this modification, since the motors 11a and 11b are provided below the first stage tower 1, the center of gravity of the entire apparatus can be stabilized.

[0017]

As described above, according to the present invention,
The rotations of the first and second motors provided in the lowermost tower are transmitted to the pair of spline shafts of the uppermost tower by the pair of spline shafts and chains provided in the respective towers, The rotation direction of the spline shaft of the uppermost tower rotated by the motor is converted into the tilt direction of the nozzle and transmitted to the nozzle, and the rotation of the spline shaft of the uppermost tower rotated by the second motor is changed by the rotation of the nozzle. Since the power is transmitted in the pan direction, the first and second motors are provided in the lowermost tower, and therefore, the upper end of the tower can be lightened and the driving force for expanding and contracting the tower can be reduced.

[Brief description of drawings]

FIG. 1 is a rear sectional view of an essential part showing a nozzle drive mechanism with a tower extended in an embodiment of a tower type fire extinguisher according to the present invention.

FIG. 2 is a right side sectional view showing the fire extinguisher of FIG.

FIG. 3 is a rear cross-sectional view showing a stored state of the tower.

FIG. 4 is a plan sectional view showing a housed state of the tower of FIG.

FIG. 5 is a right side sectional view showing a stored state of the tower of FIG.

FIG. 6 is a side view showing a lifting mechanism of the tower.

FIG. 7 is a rear sectional view of an essential part showing a modified example.

[Explanation of symbols]

1-4: Tower 5: Nozzle support part 6: Nozzle 11a, 11b, 15: Motor 12a, 12b, 51a, 51b: Gear 13a, 13b, 21a, 21b, 31a, 31b, 4
1a, 41b: Spline shaft 14a, 14b, 22a, 22b, 32a, 32b: Transmission chain 16, 23, 24, 33, 34: Rotating drum 17: Wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Umehara 2-1043 Kamiosaki, Shinagawa-ku, Tokyo Hochiki Co., Ltd. Heights 1 F

Claims (1)

[Claims] 1. A tower fire extinguisher in which a plurality of towers are vertically expandable and contractable, and a nozzle for discharging a fire extinguishing agent is tiltably and panably attached to the uppermost tower, wherein the lowermost tower is provided. And first and second motors for rotating the nozzle in the tilt direction and the pan direction, respectively, and at least towers above the lowest tower are supported so that their axes extend vertically. A plurality of pairs of spline shafts that can be rotated by the first and second motors, a plurality of pairs of chains that connect each pair of spline shafts that are arranged in the upper and lower towers, and rotate by the first motors A gear mechanism that converts the rotation direction of the spline shaft of the uppermost tower to the tilt direction of the nozzle and transmits it to the nozzle, and the gear mechanism of the uppermost tower that is rotated by the second motor. Tower type fire extinguishing apparatus having a gear mechanism for transmitting the rotation of the spline shaft in the pan direction of the nozzle.