JP2018033570A - Fire spread suppression device and garbage collection vehicle equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire spread suppression device capable of suppressing fire spread by quickly discharging liquid for suppressing fire spread in the event of fire, and a garbage collection vehicle equipped with the same.SOLUTION: A fire spread suppression device includes a tank 70 for holding liquid for suppressing fire spread, a stopper 72 for holding a spring 71 in a state that restoring force is generated, which is released at a predetermined temperature, and an opening mechanism 73 for partially opening the lower part of the tank 70 using the restoring force of the spring 71 and discharging the liquid for suppressing fire spread.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a fire spread suppressing device that suppresses the spread of fire and a garbage truck equipped with the same.

  There is a problem with the fire of garbage trucks generated by the collected dust as a fire. Conventionally, in order to suppress the spread of fire in this garbage truck, for example, as described in Patent Documents 1 and 2, an injection nozzle is provided on the inner ceiling of the dust container, and when a fire is detected by a sensor, 2. Description of the Related Art There is known a garbage collection vehicle in which water is sucked up from a water tank provided under a box by a pump and sprayed from a spray nozzle.

  Further, for example, Patent Document 3 discloses a cleaning vehicle in which an ampoule type digester that is ruptured by heat at the time of a fire and sprays a fire extinguishing agent is attached to an upper portion of a hopper chamber that collects dust. This ampoule type digester expands a fire extinguishing agent with heat from a fire, bursts a glass container with the expansion pressure, and sprays the fire extinguishing agent into a hopper chamber.

Japanese Patent No. 5683869 JP 2003-95404 A Japanese Patent Laid-Open No. 10-317338

  When a fire is detected by a sensor as described in Patent Documents 1 and 2 above, the pump is operated to inject fuel, and if the sensor or pump fails, the fire extinguishing will be delayed and fire spread may be suppressed. There is a problem that it will not be possible. In addition, in the ampoule type digester described in Patent Document 3, the heat at the time of fire is transmitted to the fire extinguishing agent in the glass container, and the fire extinguishing agent is decomposed and expanded to store the power for diffusion. Since it is a rupture, it takes time to rupture the glass container. Moreover, since it explodes when the expansion pressure of the extinguishing agent exceeds the pressure limit of the glass container, there is a problem that it is difficult to set the temperature at which the glass container bursts.

  In view of the above, an object of the present invention is to provide a fire spread suppressing device that can quickly discharge a fire spread suppressing liquid and suppress the spread of a fire in the event of a fire, and a garbage truck equipped with the same.

  The fire spread suppressing device of the present invention is a tank for storing a fire spread suppressing liquid, a stopper that holds the elastic member in a state where a restoring force is generated, a stopper that is released at a predetermined temperature, and a restoring force of the elastic member. And an opening mechanism for releasing the fire spread suppressing liquid by partially opening the lower part of the tank.

  According to the fire spread suppressing device of the present invention, when the predetermined temperature is reached in the event of a fire, the stopper is released, and the lower part of the tank is partially opened by using the restoring force of the elastic member, so that the fire spread suppressing liquid is obtained. Is released, it is possible to quickly suppress the spread of fire.

  Here, it is desirable that the opening mechanism is a cutter that is moved by the restoring force of the elastic member to cut off a part of the lower part of the tank. As a result, the stopper is released when a predetermined temperature is reached in the event of a fire, and the lower part of the tank is cut off by the cutter using the restoring force of the elastic member, and a part of the lower part of the tank is opened to suppress the spread of fire. The liquid is discharged, and it becomes possible to quickly suppress the spread of fire.

The stopper is preferably made of high density polyethylene. High-density polyethylene (HDPE) has a deflection temperature under load (JIS K 7191) of 66 to 110 ° C when a resilient force of an elastic member of about 5 kgf / cm ² or less is applied. When it is softened, the stopper is released. Moreover, since the general use polypropylene has a deflection temperature under load (JIS K 7191) in a state where a restoring force of an elastic member of 5 kgf / cm ² or less is applied, it can also be used. Note that the deflection temperature under load is too low for low-density polyethylene, which may cause malfunction.

  Moreover, it is desirable that the tank has a bellows shape that can be expanded and contracted. As a result, when the tank is partially opened and the fire spread suppression liquid is released, the tank shrinks to release the negative pressure in the tank, and the fire spread suppression liquid in the tank is released smoothly. The

  In addition, the garbage collection vehicle of the present invention is a dust storage box mounted on the vehicle body and having a rear opening, and a dust input box connected to the rear opening of the dust storage box. A dust collecting vehicle having a dust throwing box equipped with a dust loading device for pushing the dust into the dust containing box, the dust throwing box having the fire spread prevention device. As a result, when the dust collected in the dust box becomes a fire type and a fire occurs, the stopper is released when the temperature reaches a predetermined temperature, and the lower part of the tank is partially opened using the restoring force of the elastic member. As a result, the fire spread inhibiting liquid is released, so that fire spread can be quickly suppressed.

  In addition, the garbage collection vehicle of the present invention includes a partition plate that partitions the machine room of the dust loading device and the rear opening side of the dust storage box, and the fire spread suppressing device is partially opened by the opening mechanism. It is desirable that the fire spread inhibiting liquid released from the tank is provided at a position where it flows between the partition plate and the dust loading device. As a result, the spread fire suppression liquid released from the tank flows between the partition plate that is most likely to become a fire source and the dust loading device, so that the dust container is full of dust. Even so, it is possible to quickly suppress the spread of fire.

(1) A tank that contains a liquid for suppressing the spread of fire, and a stopper that holds the elastic member in a state where a restoring force is generated. The stopper that is released at a predetermined temperature, and the restoring force of the elastic member With a configuration including an opening mechanism that partially releases the lower part and releases the fire spread suppressing liquid, it becomes possible to quickly release the fire spread suppressing liquid and suppress the fire spread in the event of a fire.

(2) Since the opening mechanism is a cutter that moves due to the restoring force of the elastic member and cuts off a part of the lower part of the tank, it becomes possible to quickly release the fire spread suppressing liquid and suppress the spread of fire with a simple configuration. , Low cost.

(3) Since the stopper is made of high-density polyethylene, it is possible to prevent malfunction, and to quickly spread the fire spread by suppressing the fire spread when a fire occurs.

(4) Since the tank is retractable, the negative pressure in the tank is released when the tank shrinks, and the fire spreading suppression liquid in the tank is released smoothly, so that the fire spreads quickly and effectively. It becomes possible to release the suppressing liquid and suppress the spread of fire.

It is a side view which shows the internal structure of the garbage truck provided with the fire spread prevention apparatus in embodiment of this invention. It is an enlarged side view of the fire spread control apparatus of FIG. It is the III section enlarged view of FIG. It is IV arrow line view of FIG. FIG. 5 is a rear view of FIG. 4. It is sectional drawing of the fire detection apparatus installed in the refuse input box of FIG.

  1 is a side view showing an internal structure of a garbage truck equipped with a fire spread suppressing device according to an embodiment of the present invention, FIG. 2 is an enlarged side view of the fire spread suppressing device of FIG. 1, and FIG. 3 is III of FIG. 4 is an enlarged view of FIG. 4, and FIG. 5 is a rear view of FIG. 4. In the following description, the front, rear, left, and right directions are based on the traveling (forward) direction of the garbage truck.

  In FIG. 1, a garbage collection vehicle 1 according to an embodiment of the present invention has a garbage storage box 3 mounted on a vehicle body 2. In the rear opening 3 </ b> A at the rear end of the dust container 3, a dust input box 4 is continuously provided. At the rear of the dust input box 4, a dust input port 4 </ b> A for inputting dust is opened. Inside the dust throwing box 4 is provided a rotary dust loading device 5 for loading the dust thrown from the dust throwing port 4A into the dust containing box 3 through the rear opening 3A.

  The dust loading device 5 includes a pressing plate 20 that swings in the front-rear direction of the vehicle body 2, and a rotating plate 21 that has a rotation center near the lower end of the pressing plate 20 and rotates forward and backward. The pushing plate 20 extends over the entire width direction of the dust box 4 and is disposed so as to face the rear opening 3 </ b> A of the dust container 3. The upper portion of the pushing plate 20 is provided with an extending portion 20B extending upward from the central axis 20A near the center of the left and right side walls of the dust throwing box 4. The distal ends of a pair of left and right push cylinders 22 are connected to the distal end of the extending portion 20B. The pushing plate 20 swings in the front-rear direction of the vehicle body 2 around the central axis 20 </ b> A by the expansion / contraction operation of the pushing cylinder 22.

  The rotating plate 21 is provided below the pushing plate 20. The rotating plate 21 has a rotating shaft 21A as a rotation center near the lower end of the pushing plate 20, and rotates around the rotating shaft 21A along the bottom wall 4D formed in a substantially semicircular cross section of the dust box 4. It is configured as follows.

  In addition, a partition plate 6 that partitions the lower side of the pushing cylinder 22 at the upper part of the dust loading device 5 and the rear opening 3 </ b> A side of the dust storage box 3 is provided in the dust throwing box 4. The partition plate 6 is provided over the entire width direction of the dust box 4. By this partition plate 6, the inside of the dust container 4 is placed in the machine room 4 </ b> B on the side where the pushing cylinder 22 of the dust loading device 5 is housed and the side where the dust is thrown into the rear opening 3 </ b> A of the dust container 3. And the garbage chamber 4C.

  Moreover, the refuse collection vehicle 1 in this embodiment is provided with the fire spread prevention device 7 shown in FIG. The fire spread suppression devices 7 are provided on the left and right sides of the partition plate 6 of the machine room 4B of the dust bin 4 respectively. The fire spread suppressing device 7 includes a tank 70 that stores a fire spread suppressing liquid W such as water or an incombustible liquid, a stopper 72 that holds a spring 71 as an elastic member in a state where a restoring force is generated, and a restoration of the spring 71. An opening mechanism 73 that releases part of the lower portion of the tank 70 by using force to release the fire spreading suppression liquid W is provided.

  The tank 70 has a bellows shape made of low density polyethylene (LDPE), and is extendable. Further, the tank 70 is translucent, and the internal fire spread suppressing liquid W can be confirmed from the outside. An upper portion of the tank 70 is provided with a liquid replenishing port for replenishing the fire spread inhibiting liquid, and a detachable cap 70A is provided at the liquid replenishing port.

  As shown in FIGS. 3 and 4, the opening mechanism 73 has a cutter 73 </ b> A that is moved by the restoring force of the spring 71 to cut off a part of the lower portion of the tank 70. On the lower side of the tank 70, a rail 73 </ b> B having a U-shaped cross section extending left and right is provided along the lower side surface of the tank 70. The cutter 73A is provided at a position where it does not interfere with each other on the upper and lower sides of a slider 73C having a U-shaped cross section provided so as to be slidable right and left along the rail 73B.

The spring 71 is provided between the slider 73C and the end of the rail 73B. As shown in FIG. 4, the slider 73 </ b> C has a state in which the spring 71 is extended, that is, a state in which a restoring force (about 5 kgf / cm ² in this embodiment) is generated in the spring 71. The stopper 72 is connected to the slider 73C via a wire 72A, and holds the spring 71 in a state where this restoring force is generated. The stopper 72 is a wire made of high density polyethylene (HDPE).

  In this fire spread suppressing device 7, when a temperature exceeding 66 to 110 ° C. is reached in the event of a fire, the stopper 72, which is a high-density polyethylene wire, is softened and broken, and is released by the restoring force of the spring 71. The cutter 73A moves along 73B, and a part of the lower portion of the tank 70 is cut off. As a result, a part of the lower portion of the tank 70 is opened, and the fire spreading suppression liquid W is released.

  The fire spread suppressing device 7 is provided at a position where the spread fire suppressing liquid W discharged from the tank 70 flows between the partition plate 6 and the pushing plate 20 of the dust loading device 5. W flows down along the surface of the pushing plate 20 to the vicinity of the rear opening 3 </ b> A of the dust container 3 below the dust loading device 5. As a result, the fire spreading suppression liquid W released from the tank 70 flows into a position where the possibility of becoming a fire source is the highest, so that even if the dust container 3 is full of dust, the fire spreads quickly. Can be suppressed.

  Further, in the fire spread suppressing device 7 in the present embodiment, since the tank 70 has a bellows shape that can be expanded and contracted, when the tank 70 is partially opened and the fire spread suppressing liquid W in the tank 70 is released, the tank 70 is released. By reducing the pressure, the negative pressure in the tank 70 is released, and the fire spread suppressing liquid W in the tank 70 is smoothly discharged. In addition, when the tank 70 is not hermetically sealed and has an air vent hole, it does not have to be bellows.

  In this embodiment, the opening mechanism 73 has a configuration in which a part of the lower part of the tank 70 is cut out by the cutter 73A. However, an opening with a stopper is provided in the lower part of the tank 70, and the restoring force of the spring 71 is provided. It is also possible to have a configuration in which a part of the lower portion of the tank 70 is opened by using the squeezing. It is also possible to provide a structure in which a water stop fastener is provided at the lower portion of the tank 70 and the water stop fastener is opened using the restoring force of the spring 71. Further, other elastic members may be used in place of the spring 71 as a member that exhibits a restoring force in order to operate the opening mechanism 73.

  Further, in the present embodiment, the fire spread prevention device 7 is provided on the left and right sides of the partition plate 6 of the machine room 4B of the dust box 4, but can be appropriately increased or decreased.

  In addition, the dust collection vehicle 1 according to the present embodiment is provided with a nozzle 8 as a fire spread suppressing device that sprays the spread fire suppressing liquid W on the upper wall of the dust storage box 3 and the lower surface of the partition plate 6. Further, a nozzle 9 as a fire spread suppressing device that injects a fire spread suppressing liquid W such as water or an incombustible liquid toward the upper surface of the partition plate 6 is also provided above the machine room 4B side of the partition plate 6. Yes. A plurality of nozzles 9 are provided in the horizontal direction so that the spread fire suppressing liquid W is evenly distributed over the entire width direction of the partition plate 6.

  Moreover, the garbage truck 1 in this embodiment is provided with the fire detection apparatus 10 installed in the rear upper area | region inside the dust input box 4. FIG. FIG. 6 is a cross-sectional view of the fire detection device 10. As shown in FIG. 6, the fire detection device 10 includes a passive sensor 11, a cylindrical portion 12 that covers the periphery of the incident path to the passive sensor 11, and a polyethylene cover 13 that covers the incident path of the passive sensor 11. Have.

  The passive sensor 11 is a known sensor that is mainly used as a human sensor, and includes a pyroelectric body (thermal element) 11A provided in a housing and an interference filter 11B that selects far infrared rays. The passive sensor 11 is a sensor that receives a far infrared ray transmitted through the interference filter 11B by the pyroelectric body 11A and generates a signal. Moreover, in this embodiment, the passive sensor 11 is wrapped with a material (in this embodiment, an aluminum sheet 14) having an absorptance with respect to the far-infrared wavelength region of 0.1 or less.

  The cylindrical portion 12 covers the periphery of the far-infrared incident path to the passive sensor 11 and opens toward a portion where the dust is compressed by the dust loading device 5. The part where the dust is compressed mainly refers to the swinging range of the pushing plate 20 and the rotating range of the rotating plate 21. In addition, in this embodiment, although the cylindrical part 12 is a product made from a polyvinyl chloride, what is necessary is just a thing whose heat conductivity is lower than comparable.

  The cover 13 is for adjusting the transmittance of far-infrared rays, and in this embodiment, a polyethylene cover having a thickness of 2 mm is provided twice. The thickness of the cover 13 is appropriately adjusted according to the sensitivity of the passive sensor 11. Moreover, although the front-end | tip of the cover 13 is a plane, other shapes, such as a curved surface, may be sufficient.

  In the fire detection device 10 having the above-described configuration, the passive sensor 11 that is also used as a human sensor is lowered in sensitivity by covering the incident path with a polyethylene cover 13, and the portion where dust is compressed by the dust loading device 5. It is possible to instantly detect far-infrared rays emitted by fires generated from. When a fire is detected by the fire detection device 10, the fire spread suppressing liquid W is ejected from the nozzles 8 and 9 to suppress the spread of fire. In addition, in the garbage truck 1 of this embodiment, as shown in FIG. 2, the smoke sensor 30 is also provided in the vicinity of the fire spread control device 7, and this smoke sensor 30 also detects a fire. ing.

  Moreover, in the fire detection apparatus 10 in this embodiment, since the passive sensor 11 is wrapped with the aluminum sheet 14 that is a material having an absorptivity with respect to the wavelength region of far infrared rays of 0.1 or less, the passive sensor 11 is a fire. Irrelevant ambient far infrared rays, that is, far infrared rays other than the far infrared rays emitted by the fire generated from the part where the dust is compressed by the dust loading device 5 is not detected, and erroneous detection is prevented. .

  Furthermore, since the fire detection apparatus 10 in this embodiment has the cylindrical part 12 which covers the circumference | surroundings of the incident path | route to the passive sensor 11, and opened toward the site | part where dust is compressed by the dust loading apparatus 5, it is passive. The far-infrared rays detected by the sensor 11 are limited to the portion where the dust is compressed by the dust loading device 5, thereby preventing erroneous detection.

  In addition, in the said embodiment, although the dust collection vehicle 1 provided with the rotary dust loading device 5 was demonstrated, it is applicable similarly to the dust collection vehicle provided with the compression-type dust loading device. It is.

  The fire spread suppressing device of the present invention is useful as a device that spreads a fire that occurs when dust or the like is a fire type.

DESCRIPTION OF SYMBOLS 1 Dust collection truck 2 Car body 3 Dust storage box 3A Rear opening 4 Dust input box 4A Dust input 4B Machine room 4C Dust room 4D Bottom wall 5 Dust loading device 6 Partition plate 7 Fire spread prevention device 8, 9 Nozzle 10 Fire Detection device 11 Passive sensor 11A Pyroelectric body 11B Interference filter 12 Cylindrical part 13 Cover 20 Push plate 21 Rotating plate 22 Push cylinder 30 Smoke sensor 70 Tank 70A Cap 71 Spring 72 Stopper 72A Wire 73 Opening mechanism 73A Cutter 73B Rail 73C Slider

Claims (6)

  A tank that contains a liquid for suppressing the spread of fire, a stopper that holds the elastic member in a state where a restoring force is generated, a stopper that is released at a predetermined temperature, and a lower part of the tank that uses the restoring force of the elastic member A fire spread suppressing device comprising: an opening mechanism that partially releases the fire to release the fire spread suppressing liquid.   The fire spread prevention device according to claim 1, wherein the opening mechanism is a cutter that is moved by a restoring force of the elastic member to cut off a part of the lower portion of the tank.   The fire spread prevention device according to claim 1 or 2, wherein the stopper is made of high-density polyethylene.   The fire spread suppressing device according to any one of claims 1 to 3, wherein the tank has a bellows shape that can be expanded and contracted. A dust storage box mounted on the vehicle body and having a rear opening, and a dust input box connected to the rear opening of the dust storage box, and the dust input from the dust input opening into the dust storage box A garbage collection vehicle having a dust input box equipped with a dust loading device to be pushed in,
A garbage truck equipped with the fire spread prevention device according to any one of claims 1 to 4 in the dust box.   A partition plate for partitioning a machine room of the dust loading device and a rear opening side of the dust storage box, and the fire spread suppressing device is discharged from the tank partially opened by the opening mechanism. The refuse collection vehicle according to claim 5, wherein the fire spread inhibiting liquid is provided at a position where the liquid for suppressing fire spread flows between the partition plate and the dust loading device.

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