JPH01256406A - Dust collector vehicle - Google Patents

Abstract

PURPOSE:To easily and surely extinguish a fire in a vehicle during its running and stopping by constituting the vehicle mounting at least two fire-extinguishing gas containers between a driver's seat and a storage chamber and controlling an injection amount of at least the one fire-extinguishing gas container, when it fights a fire, by a delay device so as to continue jetting over a long time. CONSTITUTION:In case of fire fighting, fire-extinguishing gas is emitted from both containers 5, 5 and injected to the inside of a storage chamber 3 from an injection head 6 through piping. The fire-extinguishing gas from the one container 5 is injected to a low bottom of the storage chamber 3 within a short time and utilized for extinguishing mainly a surface fire. Further because of possibility even by this surface fire-fighting with a fire remaining in a deep part, the fireextinguishing gas is emitted from the other container 5 over a long time in a condition that a flow amount is suppressed by a delay device 29, for instance, by a flow control valve. Consequently, the storage chamber 3 enables its inside to be continued holding a fully filled condition with the fire-extinguishing gas during the preselected time, continuously suppressing the fire in the deep part during the time till a vehicle stops fighting the fire in the storage chamber 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust collection vehicle, and more particularly to a dust collection vehicle equipped with fire extinguishing equipment.

Conventionally, dust collection vehicles having a storage chamber for compressing and storing dust at the rear of the cab have been widely used.

In recent years, accidents have occurred in which fires occurred in storage compartments of dust collection vehicles while they were running after collecting dust, and extinguishing them has become a major issue.

Dust collection trucks are usually equipped with an ordinary fire extinguisher, but this type of fire extinguisher was too much to handle. Apparently attempts were made to spray extinguishing liquid from the ceiling of the dust collection vehicle, but this did not provide a sufficient extinguishing effect.

Because various types of dust are stored in dust collection trucks, temples, etc.
For example, items that easily catch fire, such as stoves that still contain oil, or items that are easily flammable when ignited, such as cloth or paper, may be mixed in. As the cause of the fire is currently unclear, it is not known what extinguishing methods are effective.

- Fires caused by boat fishing include surface fires and deep fires (kuzufuri fires).
Therefore, there is currently a need for a fire extinguishing method that can deal with both types of fires.

Furthermore, in a dust collection vehicle, there is a high possibility that a fire will break out in a storage compartment located away from the driver's seat while the vehicle is running.

When considering the possibility of a fire occurring while driving on an expressway, it is necessary to be able to extinguish the fire while driving.

SUMMARY OF THE INVENTION An object of the present invention is to provide a dust collection vehicle equipped with fire extinguishing equipment that allows fire extinguishing equipment to be extinguished easily and reliably while the vehicle is running or stopped.

■Means for solving the problems The present invention achieves the above-mentioned object by installing at least two extinguishing gas cylinders between the driver's seat and the storage compartment, and by piping the extinguishing gas from each extinguishing gas cylinder to the side wall of the storage compartment. When the person in the driver's seat manually opens the release valve of the extinguishing gas cylinder, the extinguishing gas is injected into the storage compartment, and at least one of the extinguishing gas cylinders is activated by a delay device. This was accomplished by installing a fire extinguishing system that controlled the amount of ejection and made it possible to continue ejection for a long period of time using a dust collection vehicle.

Since the storage compartment is separated from the driver's seat, it is convenient to install a heat detector in the storage compartment and activate a fire alarm installed in the driver's compartment in order to quickly and reliably detect the occurrence of a fire.

Manually opening the release valve of a fire extinguishing gas cylinder takes some effort, so the release valve is a solenoid valve, and the release valve is configured to be opened by remote control using a button, switch, etc. on the control box in the driver's seat. is even more convenient.

■ When a fire is detected, the person in the driver's seat opens all extinguishing gas release valves manually or by remote control from the control box. The extinguishing gas is sent from the extinguishing gas cylinder via piping to the injection head on the side wall of the storage chamber, and a large amount of extinguishing gas is ejected into the storage chamber. Since the extinguishing agent is gas, the extinguishing gas passes through the dust in the storage chamber and fills the storage chamber, extinguishing the fire. Surface fires are quickly extinguished by this extinguishing gas. However, deep fires may remain. In order to deal with this deep fire, extinguishing gas is ejected from a part of the extinguishing gas cylinders, for example one cylinder, through a delay device, and each time the ejection flow rate is suppressed, the extinguishing gas is continuously released for a longer period of time. do it like this.

This emission time should be such that the emission can continue until the dust collection vehicle stops and moves to a place where the storage room can be inspected and treated, for example, to a safe large area away from civilians. is good. As an example, this release time is considered to be about 5 minutes.

As the fire extinguishing gas, it is preferable to use fluorocarbon gas from the viewpoint of fire extinguishing ability.

Implementation■ The details of the present invention will be explained based on embodiments shown in the drawings.

In FIGS. 1 and 2, a dust collection vehicle 1 has a driver's seat 2 and a storage chamber 3 for compressing and storing dust. The body structure of this dust collection vehicle 1 itself is well known, and the shape δ shown in this figure is
However, the body of various known dust collection vehicles can be applied.

The fire extinguishing equipment 4 according to the present invention installed in the dust collection vehicle 1 basically includes a fire extinguishing gas cylinder 5, an injection handle, and a pipe 7 connecting between the fire extinguishing gas cylinder 5 and the injection head 6.

In FIGS. 1 to 3, two extinguishing gas cylinders 5 are arranged in a space between the driver's seat 2 and the storage compartment 3. for example,
A fire extinguishing gas cylinder 5 is stored in a storage box 8 fixed to the front.

As shown in FIGS. 4 to 6, the storage box 8 has ears 9 fixed to the storage chamber 3, and can accommodate two extinguishing gas cylinders 5. If necessary, it is also possible to form the device 5 so that it can be stored in two or more bongs. The cylinder 5 has a back support plate 10 fixed to the rear plate 8a of the storage box 8, and this back support plate 1o.
It is fixed between a holding plate 13 which is inserted into a port II fixed to the holding plate 13 and fixed by a nut 12, and is held so as not to move due to vibration or the like. The front side of the storage box 8 is open to allow easy attachment and removal of the bong 5, but it is normally covered by a lid plate 8b. Additionally, cover plate 8b
An opening 16 is provided in the opening 16 for operating the opening means 15 of the opening valve 14 taken in the cylinder 5, and is covered by an operation lid 17. The operation lid 17 is formed so as to be pivotable toward the front with its lower end as a fulcrum, as shown by the chain line in FIG. Although an example has been shown in which the opening means 15 opens the operation lid 17 by pulling the tab b 17 a, removing the lock pin 18, and pressing the button 19 to open the release valve 14, the present invention is not limited to this example. It can be configured as a solenoid valve, or it can have a structure that has both the functions of a solenoid valve and a manual valve.

Connecting pipes 20 through which extinguishing gas blows out through the open valve 14 flow are connected to each bong 5 . The end of this connecting pipe 20 is connected to a joint 21 attached to the rear plate 8a of the storage box 8.

For example, jet heads 6 as shown in FIGS. 7 and 8 are fixed to both side walls of the storage chamber 3. As shown in FIG. The injection heads 6 are arranged at appropriate positions and in an appropriate number in consideration of the diffusion of extinguishing gas within the storage chamber 3. The example shown in the figure shows an example in which it is fixed to both side walls at two locations, one at approximately the center at the height of the center and the other near the rear end.

A flange 22 is fixed to the outer surface of the storage chamber side wall 3a at a corresponding position by welding or the like, and a through hole 23 opens into the storage chamber.
is formed as shown in FIG.

A flange portion 6 a of the injection head 6 is fixed to this flange 22 with bolts 24 . A nozzle 25 is screwed and fixed to the injection head 6 so as to be located at an appropriate position in the through hole 23 of the flange 22.

A conduit 27 is connected to the injection hendro by a joint 26,
The extinguishing gas sent through the conduit 27 passes through a passage in the injection head 6 and is injected into the storage chamber 3 from the nozzle 25. The jet head 6 and the nozzle 25 themselves are already known.

An example of a piping system connecting the extinguishing gas cylinder 5 and the injection head 6 is shown in FIG. 3, but the piping system is not particularly limited thereto and can be modified as appropriate depending on the vehicle body structure. Although the piping is installed at an appropriate location outside the vehicle body, it is also possible to install the piping inside the accommodation chamber 3 if necessary.

The extinguishing gas cylinder 5 is transferred to one of the two first cylinders 5a.
is used for long-term release, and the first release path 28 is connected to the release valve 14 via a delay device 29. Delay device 29
can be connected between the first discharge path 28 and the open valve 14 or in the middle of the first discharge path 28 .

The second cylinder 5b is used for rapid discharge, and the second discharge path 30 is connected to the release valve 14 via a check valve 31 that prevents backflow to the cylinder 5a side.

The check valve 31 can be connected between the second discharge path 30 and the release valve 14, or can be connected in the middle of the second discharge path 3o.

The first discharge path 28 and the second discharge path B30 are connected to merge into the intermediate path 32. The intermediate passage 32 is branched into a first injection passage 33 and a second injection passage 34 extending along the left and right side walls. The discharge passage 28, 30, the intermediate passage 32, and the injection passage 33, 34 are each formed as a steel pipe, but the material can be selected as appropriate depending on the type of extinguishing agent.

When extinguishing a fire, the opening means 15 of the first cylinder 5A and the second cylinder 5b are activated to release extinguishing gas from 5a to both cylinders, and the extinguishing gas is injected from the injection head 6 into the storage chamber 3 through the above piping. be done.

The injection jet is normally ejected from a nozzle 25 having an axis in a substantially horizontal direction.

The extinguishing gas from the second cylinder 5b is injected into the lower part of the storage chamber 3 within a short time and is mainly used for extinguishing surface fires. Even if the fire is extinguished by the second bomb 5b, there is a possibility that a deep fire still remains. In response to this deep fire, extinguishing gas is released from the first cylinder 5a with the flow rate being suppressed by a delay device 29, for example a flow rate control valve. Since the flow rate of the gas is suppressed, the extinguishing gas from the first pump 5a is injected into the storage chamber 3 for a long time. This results in
Storage chamber 3 filled with extinguishing gas from the second cylinder 5a
Even if extinguishing gas leaks out from inside through gaps or openings between parts, the storage chamber will remain full of extinguishing gas for a long period of time, for example about 5 minutes, or for a preselected period of time if necessary. It is possible to continue suppressing deep-seated fires until they can be shut down and treated inside the storage room.

There are two types of extinguishing agents: liquid and gas, but liquid extinguishing agents take time to fully penetrate into the dust in the storage room.
There is a problem with fire extinguishing ability. On the other hand, extinguishing gas can rapidly penetrate into the interior and is superior to liquids in terms of extinguishing ability. Therefore, fire extinguishing gas is used as the extinguishing agent.

COZ gas is commonly used as a fire extinguishing gas, but CO□ gas extinguishes fires by suffocation and requires a large amount of gas. Therefore, depending on the vehicle, there is a limit to the capacity of the gas cylinder that can be mounted, so C○2 gas is not suitable for dust collection vehicles. Recently, halon gas has been used as a fire extinguishing gas, and due to its chemical properties, halon gas has a large fire extinguishing ability with a small amount of gas. If you tear an ordinary dust collection vehicle, it will be 5! As a result of experiments, it was found that the fire could be sufficiently extinguished by using a halogen gas cylinder and releasing the gas within the 30 seconds stipulated in the firefighting power. It has been found that it is sufficient to use two bongs in consideration of deep fires, and use one for deep fires. In addition, two or more can be arranged if necessary.

In order to open the release valve 14, an example has been shown in which the operation lid 17 of the storage box 8 is opened and the button 19 of the opening means 15 is pressed by hand, but the release valve 14 may also be configured to be remotely controlled. can. In this case, although not shown, a solenoid valve is installed as the opening means 15, and a control box equipped with an operation button or an operation switch electrically connected to the solenoid valve by an electric wire is arranged in the driver's seat. With this configuration, when the driver or assistant notices a fire, the solenoid valve is activated by operating the operation button or switch on the control box, and the release valves 14 for the first cylinder 5a and the second cylinder 5b are opened. to open. Both release valves can be configured to be actuated by a common operating button, but they can also be configured to be actuated by separate operating buttons.

Since the driver's seat 1 is separated from the storage compartment 3 by a corner, it is difficult to detect a fire in the storage compartment 3 from within the driver's seat 1. Therefore, one or more heat detectors 35 are installed inside the storage room 3, for example on the ceiling.
, for example, attach a thermistor sensor, and this heat sensor 3
5 and a control box 36 in the driver's seat 1 are electrically connected.

Smoke detectors are available as fire detection means, but smoke detectors tend to malfunction in storage rooms where dust is stored, so heat detectors are preferred.

For example, as shown in FIG. 9, the control box 36 includes a power switch 37, a power indicator light 3"8, an operation switch 39 for operating a recovery switch 15 for restoring the fire alarm circuit, and a signal from the fire detection means 35 to detect a fire. A fire indicator light 40 that indicates the occurrence of a fire, and an adjustment knob 41 that adjusts the temperature detected by the heat sensor as the fire detection means 35 are provided.One adjustment knob 41 is provided for each temperature sensor.Inside the control box 36 It is preferable to arrange an alarm device for turning on the fire indicator light 40 and emitting an alarm sound at the same time when a fire is detected.The fire detection means can also be omitted if unnecessary.

Finally, according to the present invention, extinguishing gas, especially halon gas, can be radiated into the storage chamber, and by emitting it from the injection head at approximately the center in the height direction on the side wall of the storage chamber, the dust can be evenly distributed in the storage chamber. It is possible to penetrate every nook and cranny through gaps, making it possible to extinguish surface fires in a short time.Moreover, the extinguishing gas is sprayed from a gas cylinder in two stages: rapid injection for a short time and delayed injection for a long time. A dust collection vehicle has been obtained that is capable of extinguishing fires, is capable of reliably extinguishing fires even if they occur, and is capable of suppressing the fire and moving it to a safe location away from the private sector even if deep fires remain.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of a dust collection vehicle according to the present invention, and FIG.
The figure is a side view, Figure 3 is a system diagram of the fire extinguishing equipment, Figure 4 is a front view of the cylinder storage box, Figure 5 is a side sectional view with the cylinder stored, Part 6 is a plan view, and Figure 6 is a plan view. FIG. 7 is a partially sectional front view of the jetting head, FIG. 8 is a plan view, and FIG. 9 is a front view of the control box. ■...Dust collection vehicle 2...Driver's seat 3...Storage room 4...Fire extinguishing equipment 5...Gas cylinder
6... Injection head 7... Piping 14...
- Release valve 15...Opening means 28...First discharge path 29...Delay device 30...Second discharge path 31
... Check valve 32 ... Intermediate passage 33 ... First
Injection path 34...Second injection path procedure amendment document May 1988 250

Claims (3)

[Claims] (1) In a dust collection vehicle that has a storage compartment for compressing and storing dust behind the driver's cab, at least two extinguishing gas cylinders that are replaceably installed in the space between the driver's cab and the storage compartment, and a storage compartment. a plurality of injection heads attached to both side walls of the storage chamber so as to inject into the storage chamber; and piping connecting the injection heads and the extinguishing gas cylinder, the piping having a release valve for at least one extinguishing gas cylinder. a first discharge path connected to the outlet of the remaining extinguishing gas cylinder via a delay device, and a second discharge path connected to the outlet of the release valve of the remaining extinguishing gas cylinder via a check valve that prevents backflow toward the release valve. and,
It has an intermediate passage connected to the first discharge passage and the second discharge passage, and at least two injection passages that branch from the intermediate passage, extend along the side walls, and are connected to the injection head, and the release valve is manually operated. A dust collection vehicle characterized by comprising an open valve. (2) The vehicle according to claim 1, further comprising a heat sensor disposed within the storage compartment and a fire alarm disposed within the driver's compartment and electrically connected to the heat detector. Dust collection vehicle. (3) The release valve is an electromagnetic on-off valve instead of a manual release valve, is electrically connected to a control box provided in the operator's cab, and can be remotely controlled by an operating member provided in the control box. The dust collection vehicle according to claim 1 or 2.