JPH08266678A - Fire-extinguishing nozzle - Google Patents

Abstract

PURPOSE: To control a fire-extinguishing nozzle accurately to a reference position even if the accuracy of mounting angle detectors is not good by storing angles of depression and elevation and angle of rotation at a nozzle reference position, and using these data as nozzle-position control reference data. CONSTITUTION: This fire-extinguishing nozzle (deluge gum) 1 has its nozzle 2 fixed in a position serving as a reference for setting. A depression/elevation encoder 3 is mounted in a set mounting reference position (reference position). The reference position is set at approximately the half of a pulsed output value of the depression/elevation encoder 3, and any slight movement of the mounting position does not matter as an error in angle data output from the depression/ elevation encoder 3. Next, a rotation encoder 4 is mounted in accordance with the reference position. Then a switch in a monitor control part 6 is pressed, and data about the angles of both of the encoders 3, 4 in the set reference position of the deluge gun 1 are stored as original point data. Thereafter, the control for depression and elevation and the control for rotation are carried out according to the original point data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing nozzle used in a fire extinguisher such as a large space fire extinguisher.

[0002]

2. Description of the Related Art Conventionally, a fire extinguisher in a large space such as a dome stadium, an arena, an exhibition hall, a gymnasium, a factory, a galeria or an atrium has a water gun (fire extinguisher) for quickly extinguishing a fire that has occurred in the large space. Some nozzles are provided. A water gun is used to extinguish a fire source that is a predetermined distance away by discharging a large amount of water of several hundred liters (for example, 600 liters per minute). The nozzle mounting portion is provided rotatably in the vertical and horizontal directions with respect to a preset reference position. When water is discharged when a fire occurs, for example, the operator moves the nozzle mounting part vertically and horizontally to adjust the aiming position to the fire source visually or using a TV camera or the like to fire the nozzle. After directing to the source position, water is discharged by outputting a control signal for starting water discharge.

By the way, in such an automatic fire extinguisher,
It is configured to monitor the fire source position by dividing it into predetermined areas and discharge water to the area including the fire source position when a fire occurs. In order to be able to detect whether or not the vehicle is moving, a device has been devised which is provided with a detection means for detecting a depression / elevation angle indicating a vertical position and a detection means for detecting a turning angle indicating a horizontal position. These detecting means control the position of the water gun by using an angle detector such as an encoder to measure the amount of movement of the nozzle mounting part that is vertically swung up or down or horizontally swung by the power transmitted from the power source through the transmission mechanism. This is output to the control device that performs the control, which allows the position control device of the water spray gun to know the aiming position of the water spray gun, that is, the direction in which the nozzle is facing.

[0004]

However, in the position control device for the water spray gun described above, the aiming position (that is, the nozzle) of the water spray gun is used by using the angle detector provided in the nozzle mounting portion of the water spray gun. However, there is a problem as described below. In other words, an encoder with high resolution is used for the angle detector for controlling the position of the water gun, and usually, an elevation encoder for detecting the vertical angle and a turning encoder for detecting the horizontal angle are used. The encoder is composed of two encoders. And
The vertical rotation of the nozzle is detected by determining the rotation angle of the central axis by the elevation encoder provided on the central axis, and the horizontal rotation of the nozzle is the worm for swirling. The rotation encoder provided on the shaft detects the rotation speed of the worm shaft for detection.

That is, no matter how high the accuracy of the encoder itself is, when the installation direction of the water gun is wrong, or when the encoder is installed deviated from the reference, the deviation greatly affects the position control. In particular,
As for the horizontal displacement, the horizontal movement of the water spray gun is a circumferential movement, and the error increases as the aiming position moves away from the water spray gun, so that it is necessary to perform highly accurate position control.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and provide a fire extinguishing nozzle that correctly controls the position to a preset reference position even if the angle detector is slightly displaced.

[0007]

According to a first aspect of the present invention for solving the above-mentioned problems, an angle detecting means for detecting a depression angle and a turning angle of a nozzle rotatably provided in a vertical direction and a horizontal direction. Storage means for storing, as reference position data, angle data detected by the angle detection means when the nozzle is positioned at a reference position, reference position data stored in the storage means, and the angle detection means. Position control means for controlling the elevation angle and the turning angle of the nozzle on the basis of the angle data detected by.

In this case, the angle detecting means may have a structure according to claim 2.
As described in claim 4, a depression / elevation angle detection unit that detects a depression / elevation angle in the vertical direction of the nozzle, and a rotation angle detection unit that detects a rotation angle of the nozzle in the horizontal direction, further comprising: Thus, it is preferable that the encoder is provided between the nozzle and the drive source via a coupling that serves as a connecting member.

Further, according to a fourth aspect of the present invention for solving the above-mentioned problems, a depression / elevation angle detecting section for detecting a depression / elevation angle of a nozzle provided in a vertically and horizontally rotatable manner and a turning angle of the nozzle. A rotation angle detection unit for detecting the angle, a position control unit for controlling the depression angle and the rotation angle of the nozzle based on the angle data detected by the depression angle detection unit and the rotation angle detection unit, and the nozzle as a reference position. A reference position setting means for setting the angle data detected by the depression / elevation angle detection portion and the turning angle detection portion as the operation reference point of the nozzle controlled by the position control means.

[0010]

The angle of elevation and the turning angle at the reference position of the nozzle are stored as angle data by the storage means, and the angle data is used as the reference data for controlling the nozzle position by the position control means. Angle data can be easily obtained. Thereby, the angle data at the reference position of the nozzle can be used as an operation reference point for controlling the position of the nozzle.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a right side view of a fire extinguishing nozzle (water spray gun) 1 of this embodiment, and FIG. 2 is a fire extinguishing nozzle 1 of this embodiment.
FIG. 1 and 2, the nozzle mounting portion 10 is for mounting the nozzle 2 such as a spray nozzle, and is pivotally supported by the water gun rotating portion 11. Further, the water spray gun rotating portion 11 is connected to the elevation / retraction elastic portion 13 via a link 12, and the water elevation gun rotation portion 11 and the link are formed by expanding / contracting the depression / elevation elastic portion 13 by a depression / elevation hydraulic motor 14. Nozzle mounting part 1 through 12
The nozzle 2 attached to 0 is rotatable in the vertical direction. Further, the water spray gun rotating portion 11 is provided rotatably with respect to the main body base portion 15 and is rotated by a rotating hydraulic motor 16.

The rotation of the nozzle mounting portion 10 due to the expansion / contraction operation of the elevation / depression extension portion 13 is detected as the number of rotations of the elevation / depression encoder (depression / elevation angle detection portion) 3, while the water gun for the main body base portion 15 is detected. The rotation of the rotation unit 11 is detected as the number of rotations of the rotation encoder (turning angle detection unit) 4.

FIG. 3 is an enlarged view of an essential portion of FIG. 1 showing the elevation encoder 3 and FIG. 4 is an enlarged view of an essential portion of FIG. 1 showing the turning encoder 4. The elevation encoder 3 is shown in FIG.
As shown in FIG. 3, the rotary shaft 10a of the nozzle mounting portion 10 is provided via a coupling (coupling member) 3a.
The elevation angle of the nozzle 2 is known by detecting the rotation angle of 0a. On the other hand, the turning encoder 4 is
As shown in FIG. 4, a coupling (connecting agent) 4a is attached to the worm shaft 17 accompanying the rotation of the turning hydraulic motor 16.
The rotation angle of the nozzle 2 is detected by detecting the number of rotations of the worm shaft 17. A water spray gun control unit (fire extinguishing nozzle control unit) 6 that performs position control and water discharge control of the water spray gun 1 has a memory (storage unit) 5 for storing angle data at the reference position of the nozzle 2. There is.

The elevation encoder 3 of this embodiment is
Since the rotation shaft 10a of the nozzle mounting portion 10 is provided via the coupling 3a, the rotation angle of the rotation shaft 10a becomes the output data of the elevation encoder 3 as it is, and one rotation of the nozzle mounting portion 10 (vertical direction). ) And one rotation of the elevation encoder 3 become output data. On the other hand, since the turning encoder 4 of the present embodiment is provided on the worm shaft 17 via the coupling 4a, the rotation angle of the worm shaft 17 becomes the output data of the turning encoder 4 as it is, and in the present embodiment, For example, when the nozzle mounting portion 10 is configured to rotate once by the worm shaft 17 rotating 64 times, one rotation (horizontal direction) of the nozzle mounting portion 10 corresponds to 64 rotations of the turning encoder 4. Output data can be obtained. Therefore, mounting of the turning encoder 4 is required to have higher accuracy than that of the elevation encoder 3.

Next, the operation of this embodiment will be described. First,
The nozzle 2 of the water gun 1 is fixed at a position serving as a setting reference.
Then, the elevation encoder 3 is attached in accordance with the attachment reference position set for the elevation encoder 3. At this time, since the output data of the elevation encoder 3 directly corresponds to the rotation angle of the rotating shaft 10a, the mounting reference position is set at a position where the pulse output value of the elevation encoder 3 becomes almost half. Even if the position is slightly deviated, the error of the angle data output from the elevation / depression encoder 3 does not cause much problem.

Next, the turning encoder 4 is mounted according to the mounting reference position set on the turning encoder 4. Since the turning encoder 4 outputs a pulse with 64 rotations as a reference, although the mounting reference position is provided, the accuracy required for the mounting work is different from the mounting work of the elevation encoder 3 described above. However, if the mounting position is deviated, the output angle data will have a large error. However, here, it is assumed that they are attached with the same degree of displacement as the attachment of the elevation encoder 3 described above.

When the mounting work is completed, the water gun control unit 6 is initialized. Specifically, when the switch provided in the water spray gun control unit 6 is pressed, the angle data of the current position output from the elevation encoder 3 and the turning encoder 4 at the setting reference position of the water spray gun 1 is used as the origin data. It is taken into the memory 5, and thereafter the water gun control unit 6
When the position of the water gun is controlled by, the elevation control and the turning control are performed based on the origin data stored in the memory 5.

That is, when water is discharged based on the occurrence of a fire, a position control signal based on the position information corrected by the origin data is obtained from the water discharge gun control unit 6 to the water discharge gun 1, for example, by taking a difference. Output, nozzle mounting part 1
The nozzle 2 is directed to the fire source by controlling the movement of 0 in the vertical and horizontal directions. Then, a water discharge control signal from the water discharge gun control unit 6 is output, and water from the water supply source is sent to the water discharge gun 1 to discharge water to the fire source position. As described above, in this embodiment, it is possible to easily correct the positional deviation at the time of attachment, without the need for the installation work of the rotary encoder 4 as in the conventional attachment work.

As described above, in the present embodiment, the water gun control section is based on the output data of the elevation encoder 3 and the turning encoder 4 when the nozzle 2 of the water gun 1 is positioned at the set reference position. The reference point at the time of position control operation by 6 can be corrected, and as a result, the water gun 1 with high accuracy
Position control can be performed.

In the above embodiment, an example was described in which the rotation ratios of the elevation / depression encoder 3 and the turning encoder 4 and the shafts for which the angles are to be detected are set to 1 and 64, respectively. The value can be arbitrarily set according to the configuration of the water gun 1. Further, in the above description, the case where the invention mainly made by the inventor is applied to the water gun (nozzle for fire extinguishing) which is the field of application which is the background has been described, but the invention is not limited thereto, and, for example, The present invention can be applied to those that accurately detect the rotation angle by the angle detection means, such as a turning type fire detection device.

[0021]

As is apparent from the above description, according to the present invention, the relative angle data from the reference position can be easily obtained. It can be used as an operation reference point for control. Therefore, even if the mounting angle is wrongly mounted when mounting the angle detecting means, it is possible to correct the displacement at the time of mounting and perform highly accurate position control.

[Brief description of drawings]

FIG. 1 is a right side view of a fire extinguishing nozzle according to this embodiment.

FIG. 2 is a rear view of the fire extinguishing nozzle according to the present embodiment.

FIG. 3 is an enlarged view of a main part of FIG. 1 showing a depression / elevation encoder.

FIG. 4 is an enlarged view of a main part of FIG. 1 showing a turning encoder.

[Explanation of symbols]

 1 Water Spray Gun (Fire Extinguishing Nozzle) 2 Nozzle 3 Elevation Encoder (Depression / Elevation Angle Detection Unit) 4 Swing Encoder (Swivel Angle Detection Unit) 5 Memory (Storage Means) 6 Water Spray Gun Control Unit (Fire Extinguishing Nozzle Control Unit) 10 Nozzles Mounting part 11 Water spray gun rotating part 12 Link 13 Stretching / extending part 14 Stretching hydraulic motor 15 Main body base 16 Turning hydraulic motor

Claims (4)

[Claims] 1. An angle detecting means for detecting a depression / elevation angle and a turning angle of a nozzle rotatably provided in a vertical direction and a horizontal direction, and an angle detecting means when the nozzle is positioned at a reference position. Storage means for storing the angle data as reference position data, the reference position data stored in the storage means, and the depression and elevation angle of the nozzle based on the angle data detected by the angle detection means. A fire extinguishing nozzle comprising: a position control unit for controlling. 2. The angle detecting means includes a depression / elevation angle detection unit that detects a depression / elevation angle of the nozzle in the vertical direction, and a rotation angle detection unit that detects a rotation angle of the nozzle in the horizontal direction. The fire extinguishing nozzle according to claim 1. 3. The angle detecting means is an encoder provided between the nozzle and the drive source via a coupling serving as a connecting member.
Fire extinguishing nozzle described. 4. A depression / elevation angle detection unit for detecting a depression / elevation angle of a nozzle rotatably provided in a vertical direction and a horizontal direction, a rotation angle detection unit for detecting a rotation angle of the nozzle, and the depression / elevation angle detection unit. Position control means for controlling the elevation angle and the rotation angle of the nozzle based on the angle data detected by the rotation angle detection section, and the depression angle detection section and the rotation angle when the nozzle is positioned at a reference position. A fire extinguishing nozzle, comprising: reference position setting means for setting angle data detected by a detection unit as an operation reference point of the nozzle controlled by the position control means.