Portable fire extinguishing device and method transformed from existing passenger car

Abstract

The invention belongs to the technical field of fire-fighting equipment, and particularly relates to a portable fire-fighting fire extinguishing device and method transformed from an existing passenger car. Seats of a front driving position and a co-driving position of a compartment of the existing passenger car are reserved and serve as riding positions of fire extinguishers; a vehicle-mounted fire fighting water tank, a vehicle-mounted foam box, a fire fighting pump set, a hose reel, a proportional mixer, various fire extinguishing equipment and the like are mounted on the vehicle-mounted fire fighting water tank, the vehicle-mounted foam box, the fire fighting pump set, the hose reel, the proportional mixer, the various fire extinguishing equipment and the like, and the vehicle-mounted fire fighting water tank and the vehicle-mounted foam box are mounted close to a chassis of the compartment. And the rescue equipment can slide out of the compartment along with the rescue equipment mounting platform. The portable fire fighting device has the advantages and positive effects that compared with a common fire fighting truck, the portable fire fighting device formed by transforming an existing passenger vehicle has higher maneuverability, and the portable fire fighting device can pass through a production workshop with limited space more conveniently and arrive at a fire position more quickly to extinguish a fire.

Description

Technical Field

[0001] The invention belongs to the technical field of fire fighting equipment, and in particular relates to a portable fire fighting extinguishing device and method modified by using an existing passenger car. Background Art

[0002] The production plants of passenger car OEMs, especially the assembly workshops, generally have large single-story buildings due to the layout of the production lines. The single-story building area of ​​some OEM assembly workshops even exceeds 100,000 square meters. Although a circular fire truck passage is set up around the plant in accordance with fire regulations, the plant area is too large and the span is too large, making it difficult for fire trucks to extinguish fires on the production lines inside the plant from outside the plant.

[0003] Moreover, the layout of production lines in the factory is compact, and the spacing between production lines is small, which cannot meet the clear width requirements of fire truck passages, making it difficult for ordinary fire trucks to enter the production line to put out fires. Due to its production characteristics, the general assembly workshop is generally designed as a Class D or Class E factory building. When the factory building is built, only indoor fire hydrant systems are generally designed as fire-fighting facilities, and other types of automatic fire extinguishing systems are not designed.

[0004] Therefore, based on the above problems, a lightweight fire-fighting device and method using existing passenger cars for modification, which can solve the fire fighting problem of single-body ultra-large span and ultra-large space buildings of automobile main engine plants, has important practical significance. Summary of the invention

[0005] The present invention provides a light fire extinguishing device and method which are modified by using an existing passenger car, so as to solve the problem of fire fighting in a single ultra-large span and ultra-large space building of an automobile main engine factory.

[0006] The technical solution adopted by the present invention to solve this problem is: a vehicle-mounted portable fire extinguishing device, comprising: A vehicle-mounted fire fighting box, comprising a vehicle-mounted fire fighting water tank and a vehicle-mounted foam box, wherein an equipment storage area and a rescue equipment installation platform are arranged on the upper part of the vehicle-mounted fire fighting water tank, and the rescue equipment installation platform can slide out or slide in relative to the vehicle-mounted fire fighting water tank; The rescue equipment comprises a hose reel, a proportioning mixer, a fire pump group and a control panel arranged above the rescue equipment installation platform. The hose reel is provided with a hose, the output end of the hose is connected to a multi-function spray gun, and the input end is connected to a vehicle-mounted fire fighting box through the fire pump group and the proportioning mixer.

[0007] The second invention object of the present invention is to provide a lightweight fire-fighting extinguishing device modified by an existing passenger car, in which the driver's seat and the co-driver's seat in the front part of the existing passenger car are retained as the seating positions for fire-fighting personnel; the second row of seats in the car, the spare tire cover in the trunk, etc. are removed, and a vehicle-mounted fire water tank, a vehicle-mounted foam box, a fire pump set, a hose reel, a proportioning mixer, various fire-fighting equipment and other devices are installed. The vehicle-mounted fire water tank and the vehicle-mounted foam box are installed close to the chassis of the car. When the trunk door of the car is opened during rescue operations, the rescue equipment can slide out of the car along with the rescue equipment installation platform.

[0008] In the above technical solution, a fire water tank overflow outlet and a foam tank overflow outlet are provided on the chassis of the rear part of the compartment of the existing passenger car.

[0009] In the above technical solution, the vehicle-mounted foam box is arranged on one side of the vehicle-mounted fire water tank, and is provided with a foam liquid connecting pipe, a foam box filling port, a foam box level gauge and a foam box overflow pipe. The foam box overflow pipe is connected to the water outlet of the foam box overflow port.

[0010] In the above technical solution, the vehicle-mounted fire water tank is provided with a fire water connecting pipe, a fire water tank water filling port, a fire water tank level gauge and a fire water tank overflow pipe, and the fire water tank overflow pipe is connected to the fire water tank overflow outlet.

[0011] In the above technical solution, the equipment storage area includes a fire extinguishing equipment storage area and a protective equipment storage area arranged on the top of the vehicle-mounted fire water tank. The fire extinguishing equipment storage area is located in the left rear door of the vehicle, and the protective equipment storage area is located in the right rear door of the vehicle. The fire extinguishing equipment storage area and the protective equipment storage area both adopt a layered design, and various types of fire extinguishing equipment and protective equipment are placed in layers.

[0012] In the above technical solution, ABC dry powder fire extinguishers, dry powder fire bombs, and DN65 fire hoses are arranged in the fire extinguishing equipment storage area, and fire fighting and rescue protective clothing, protective helmets, and protective boots are arranged in the protective equipment storage area.

[0013] In the above technical solution, a slide rail is installed at the bottom of the rescue equipment installation platform, and the rescue equipment installation platform is slidably connected to the vehicle-mounted fire water tank through the slide rail. A rescue equipment installation platform locking pin is also inserted on the rescue equipment installation platform.

[0014] In the above technical solution, the fire pump group is powered by a gasoline engine. The fire pump group is equipped with a small battery and a starter motor, and the fire water pump can be started directly through the fire pump group start button on the control panel.

[0015] In the above technical solution, the hose reel is connected to the proportioning mixer through a fire pump group, and the input end of the proportioning mixer is connected to the vehicle-mounted fire water tank and the vehicle-mounted foam tank through the foam liquid connecting pipe and the fire water connecting pipe respectively. The fire-extinguishing water and foam liquid are mixed at the proportioning mixer and then output to the hose reel.

[0016] In the above technical solution, the control panel is provided with a working pressure display, a foam valve opening button, a foam valve closing button, a system power switch, a fire water tank liquid level display, a foam tank liquid level display, a working power indicator light, a foam liquid ratio selection button and a fire pump group start button.

[0017] The third invention object of the present invention is to provide a fire extinguishing method using a portable fire extinguishing device modified from an existing passenger car, comprising the following steps: S1. The vehicle-mounted portable fire extinguishing device uses existing passenger vehicles as a carrying tool, which can reach the fire site conveniently and quickly; S2. After reaching the fire scene, quickly open the rear door of the passenger compartment, and then take out the protective equipment stored in the protective equipment storage area and put it on. After putting it on, take out the fire extinguishing equipment stored in the fire extinguishing equipment storage area to put out the fire; S3. When the fire extinguishing equipment stored in the fire extinguishing equipment storage area cannot achieve the fire extinguishing effect, the trunk lid of the vehicle can be opened, the rescue equipment installation platform locking pin can be pulled out, and the rescue equipment installation platform can be slid out. The fire can be put out by using the vehicle-mounted fire water tank and the vehicle-mounted foam tank through the high-pressure fine water mist or full water column and foam liquid sprayed by the multi-function spray gun; Among them: When using high-pressure fine water mist or full water column to put out the fire, the system power switch should be turned on first, and then the fire pump group should be started by rotating the fire pump group start button, and the foam valve closing button should be pressed to close the foam liquid. At this time, the multi-function spray gun provides high-pressure fine water mist or full water column to put out the fire; if foam liquid is needed to put out the fire, the foam valve opening button should be pressed to open the foam liquid, and the foam liquid ratio selection button can be pressed to select the foam liquid with the appropriate ratio to put out the fire; S4. In order to extend the time of vehicle fire-fighting and rescue operations, the fire water tank filling port can be directly connected to the indoor fire hydrant in the building using a fire hose during rescue operations, and the indoor fire hydrant can be used to achieve continuous water supply.

[0018] The advantages and positive effects of the present invention are: compared with ordinary fire trucks, the lightweight fire-fighting extinguishing device modified from existing passenger vehicles has stronger maneuverability, can move more conveniently in a production workshop with limited space, and reach the fire location faster to extinguish the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the modification position of an existing passenger vehicle according to the present invention; Figure 2 A schematic diagram of the overall installation position of various fire-fighting equipment installed on the vehicle of the present invention; Figure 3 This is a left side schematic diagram of a fire water tank and a foam tank installed in a vehicle of the present invention; Figure 4 This is a schematic diagram of the right side of the fire water tank and foam tank installed in the vehicle of the present invention; Figure 5 This is a schematic diagram of the in-vehicle rescue equipment installation platform of the present invention; Figure 6 It is a schematic diagram of the control panel of the present invention.

[0021] Figure numerals: 101-existing passenger car, 102-fire water tank overflow outlet, 103-foam box overflow outlet, 201-vehicle fire water tank, 202-vehicle foam box, 203-fire extinguishing equipment storage area, 204-protection equipment storage area, 205-rescue equipment installation platform, 301-fire water connecting pipe, 302-foam liquid connecting pipe, 401-fire water tank filling port, 402-fire water tank level gauge, 403-fire water tank overflow pipe, 404-foam box filling port, 405-foam box level gauge, 406- Foam box overflow pipe, 501-rescue equipment installation platform locking pin, 502-multi-function spray gun, 503-hose reel, 504-slide rail, 505-proportional mixer, 506-fire pump group, 507-control panel, 601-working pressure display, 602-foam valve open button, 603-foam valve close button, 604-system power switch, 605-fire water tank liquid level display, 606-foam box liquid level display, 607-working power indicator light, 608-foam liquid ratio selection button, 609-fire pump group start button. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the present application more clear, the present invention is further described in detail below with reference to the accompanying drawings.

[0023] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limitations on the present application. Example 1

[0024] A vehicle-mounted portable fire extinguishing device, comprising a vehicle-mounted fire fighting box and rescue equipment, wherein: The vehicle-mounted fire fighting box comprises a vehicle-mounted fire fighting water tank 201 and a vehicle-mounted foam box 202. The upper part of the vehicle-mounted fire fighting water tank 201 is provided with an equipment storage area and a rescue equipment installation platform 205. The rescue equipment installation platform 205 can slide out or slide in relative to the vehicle-mounted fire fighting water tank 201; The rescue equipment includes a hose reel 503, a proportioning mixer 505, a fire pump group 506 and a control panel 507 arranged above the rescue equipment installation platform 205. The hose reel 503 is equipped with a hose, the output end of the hose is connected to the multi-function spray gun 502, and the input end is connected to the vehicle-mounted fire box through the fire pump group 506 and the proportioning mixer 505.

[0025] In this embodiment, the vehicle-mounted portable fire extinguishing device is mounted on the vehicle body, and a rescue equipment installation platform 205 is arranged on the upper part of the vehicle-mounted fire water tank 201, and a multifunctional spray gun 502, a hose reel 503, a proportioning mixer 505, a fire pump set 506, a control panel 507 and other equipment are installed on the platform. To facilitate rescue operations, the rescue equipment installation platform 205 can slide out or slide in relative to the vehicle-mounted fire water tank 201, which is convenient for on-site operation during rescue operations; the hose reel 503 is connected to the proportioning mixer 505, and the waterproof and foam are pumped out according to the proportion, and the end of the hose is connected to the multifunctional spray gun 502, which adopts a multi-purpose nozzle, and can realize the spraying of high-pressure fine water mist, the spraying of a full water column, and the spraying of foam liquid through the conversion of the nozzle, and different spraying methods are used for different types of fires to achieve better fire extinguishing effect. Example 2

[0026] refer to Figure 1-6 As shown, this embodiment provides a portable fire extinguishing device modified from an existing passenger vehicle. Figure 2-6In the portable fire-fighting device transformed from an existing passenger vehicle, the driver's seat and the co-driver's seat in the front of the vehicle compartment of the existing passenger vehicle are retained; the second row of seats in the vehicle compartment and the spare tire cover in the trunk are removed, and the portable fire-fighting device described in Example 1 is installed; the on-board fire water tank 201 and the on-board foam box 202 are installed close to the chassis of the vehicle compartment, and when the trunk door of the vehicle compartment is opened during rescue operations, the rescue equipment can slide out of the vehicle compartment along with the rescue equipment installation platform 205.

[0027] In this embodiment, in order to lower the center of gravity of the vehicle, the on-board fire water tank 201 and the on-board foam box 202 are installed close to the vehicle chassis. At the same time, in order to maximize the capacity of the on-board fire water tank, the on-board fire water tank 201 and the on-board fire foam box 202 are blow-molded and arranged close to the vehicle floor. A rescue equipment installation platform 205 is arranged on the upper part of the on-board fire water tank 201, and equipment such as a multi-function spray gun 502, a hose reel 503, a proportioning mixer 505, a fire pump set 506, and a control panel 507 are installed above the platform. In order to facilitate rescue operations, a slide rail 504 is installed at the bottom of the rescue equipment installation platform 205. After opening the trunk door of the vehicle during rescue operations, the rescue equipment installation platform 205 can be slid out by pulling out the rescue equipment installation platform locking pin 501, which is convenient for on-site operations during rescue operations.

[0028] Compared with ordinary fire trucks, this device has stronger maneuverability, can move more conveniently in a production workshop with limited space, and reach the fire location faster to extinguish the fire.

[0029] Furthermore, in this embodiment, it can also be considered that a fire water tank overflow outlet 102 and a foam tank overflow outlet 103 are provided on the chassis of the rear part of the vehicle compartment of the existing passenger vehicle.

[0030] Furthermore, in the present embodiment, it can also be considered that the vehicle-mounted foam box 202 is arranged on one side of the vehicle-mounted fire water tank 201, and the vehicle-mounted foam box 202 is provided with a foam liquid connecting pipe 302, a foam box filling port 404, a foam box liquid level gauge 405 and a foam box overflow pipe 406, and the foam box overflow pipe 406 is connected to the foam box overflow outlet 103.

[0031] Furthermore, in this embodiment, it can also be considered that the vehicle-mounted fire water tank 201 is provided with a fire water connecting pipe 301, a fire water tank water injection port 401, a fire water tank liquid level gauge 402 and a fire water tank overflow pipe 403, and the fire water tank overflow pipe 403 is connected to the fire water tank overflow outlet 102. In order to extend the vehicle fire fighting and rescue operation time, the fire water tank water injection port 401 is made of a universal DN65 fire hose interface. During the rescue operation, the fire hose can be directly used to connect the indoor fire hydrant in the building, and the indoor fire hydrant can be used to achieve continuous water supply. In order to facilitate the water filling operation, the fire water tank water injection port is set at the rear door of the vehicle, and the water filling operation can be carried out by opening the rear door.

[0032] Furthermore, in this embodiment, it can also be considered that the equipment storage area includes a fire extinguishing equipment storage area 203 and a protective equipment storage area 204 arranged on the upper part of the vehicle-mounted fire water tank 201, the fire extinguishing equipment storage area 203 is located in the left rear door of the vehicle, and the protective equipment storage area 204 is located in the right rear door of the vehicle. The fire extinguishing equipment storage area 203 and the protective equipment storage area 204 both adopt a layered design, and various types of fire extinguishing equipment and protective equipment are placed in layers.

[0033] like Figure 2 As shown, in order to improve the mobile fire fighting and rescue capabilities, a fire fighting equipment storage area 203 and a protective equipment storage area 204 are installed in the vehicle. The fire fighting equipment storage area 203 and the protective equipment storage area 204 are installed on the upper part of the fire water tank 201. The fire fighting equipment storage area 203 is located in the left rear door of the vehicle, and the protective equipment storage area 204 is located in the right rear door of the vehicle. When the fire fighting operation is performed, the left and right doors at the rear of the vehicle can be opened to access them. According to the type of fire to be extinguished, the fire fighting equipment storage area 203 can be equipped with ABC dry powder fire extinguishers, dry powder fire bombs, DN65 fire hoses and other devices. According to the needs, the protective equipment storage area 204 is equipped with fire fighting and rescue protective clothing, protective helmets, protective boots and other devices. In order to facilitate access during rescue operations, the fire fighting equipment storage area 203 and the protective equipment storage area 204 are both designed in layers, and various types of fire fighting equipment and protective equipment are placed in layers.

[0034] Furthermore, in this embodiment, it can also be considered that a slide rail 504 is installed at the bottom of the rescue equipment installation platform 205, and the rescue equipment installation platform 205 is slidably connected to the vehicle-mounted fire water tank 201 through the slide rail 504, and a rescue equipment installation platform locking pin 501 is also inserted on the rescue equipment installation platform 205.

[0035] Furthermore, in this embodiment, it can also be considered that the fire pump group 506 is powered by a gasoline engine. The fire pump group 506 has its own small battery and starter motor, and the fire water pump can be started directly through the fire pump group start button 609 on the control panel 507.

[0036] The fire pump set 506 is powered by a gasoline engine, which is convenient for long-term firefighting and rescue operations. The pump set is equipped with a small battery and a starter motor, and the fire pump can be directly started through the fire pump set start button 609 on the control panel 507; at the same time, the gasoline engine is equipped with a pull-rope start device, and when the battery is low or damaged, the gasoline engine can also be started through the pull-rope start device. The front end of the proportioning mixer 505 is connected to the vehicle-mounted fire water tank 201 and the vehicle-mounted foam tank 202, and the fire extinguishing water and foam liquid are mixed at the proportioning mixer 505 and output to the hose reel 503.

[0037] Furthermore, it can also be considered in this embodiment that the hose reel 503 is connected to the proportioning mixer 505 through the fire pump group 506, and the input end of the proportioning mixer 505 is connected to the vehicle-mounted fire water tank 201 and the vehicle-mounted foam box 202 through the foam liquid connecting pipe 302 and the fire water connecting pipe 301 respectively, and the fire-extinguishing water and foam liquid are mixed at the proportioning mixer 505 and then output to the hose reel 503.

[0038] like Figure 3 , 5 As shown, the hose reel 503 is connected to the proportioning mixer 505, and a hose is arranged on the reel. The length of the hose can be configured according to actual needs, and the end of the hose is connected to the multifunctional spray gun 502. The multifunctional spray gun 502 adopts a multi-purpose nozzle, and can realize the spraying of high-pressure fine water mist, the spraying of a full water column, and the spraying of foam liquid through the conversion of the nozzle. Different spraying methods are used for different types of fires to achieve better fire extinguishing effect.

[0039] Furthermore, in this embodiment, it can also be considered that the control panel 507 is provided with a working pressure display 601, a foam valve opening button 602, a foam valve closing button 603, a system power switch 604, a fire water tank liquid level display 605, a foam tank liquid level display 606, a working power indicator light 607, a foam liquid ratio selection button 608 and a fire pump group start button 609.

[0040] like Figure 6 As shown, the control panel 507 is provided with a fire water tank level display 605, a foam tank level display 606, a control panel power switch 604 and other devices. The control panel 607 can be used to visually display the fire water tank level and the foam tank level, which is convenient for rescue operations. At the same time, a foam liquid ratio selection button 608 is provided in the control panel, which is convenient for selecting different ratios for mixing during rescue operations, so as to improve the effectiveness of firefighting for different types of fires.

[0041] The working principle of the portable fire extinguishing device modified from an existing passenger vehicle in Example 2 is as follows: The fire extinguishing device uses an existing passenger vehicle as a carrying tool, and can reach the fire site conveniently and quickly. After reaching the fire site, the rear door of the vehicle passenger compartment is quickly opened, and the fire-fighting and rescue protective clothing, protective helmets, protective boots and other equipment stored in the protective equipment storage area 204 can be taken out for wearing. After wearing, the fire extinguisher, fire hose and other equipment stored in the fire extinguishing equipment storage area 203 can be taken out for fire fighting.

[0042] When the fire-fighting equipment stored in the fire-fighting equipment storage area 203 cannot achieve the fire-fighting effect, the vehicle trunk lid can be opened, the rescue equipment installation platform locking pin 501 can be pulled out, and the rescue equipment installation platform 205 can be slid out, and the vehicle-mounted high-pressure fine water mist and foam liquid fire extinguishing device can be used to put out the fire.

[0043] When using high-pressure fine water mist or a full water column to extinguish a fire, the system power switch 604 should be turned on first, and then the fire pump group 506 should be started by rotating the fire pump group start button 609, and the foam valve closing button 603 should be pressed to close the foam liquid. At this time, the multifunctional spray gun 502 provides high-pressure fine water mist or a full water column to extinguish the fire. If foam liquid is needed to extinguish a fire, the foam valve opening button 602 should be pressed to open the foam liquid, and the foam liquid ratio selection button 608 can be pressed to select the foam liquid with a suitable ratio for fire extinguishing. Example 3

[0044] A fire extinguishing method using a portable fire extinguishing device modified from an existing passenger car, comprising the following steps: S1. The vehicle-mounted portable fire extinguishing device uses existing passenger vehicles as a carrying tool, which can reach the fire site conveniently and quickly; S2. After reaching the fire scene, quickly open the rear door of the passenger compartment, and take out the protective equipment stored in the protective equipment storage area 204 to put on. After putting on the protective equipment, take out the fire extinguishing equipment stored in the fire extinguishing equipment storage area 203 to put out the fire; S3. When the fire extinguishing equipment stored in the fire extinguishing equipment storage area 203 cannot achieve the fire extinguishing effect, the trunk cover of the vehicle can be opened, the rescue equipment installation platform locking pin 501 is pulled out, and the rescue equipment installation platform 205 is slid out, and the high-pressure fine water mist or full water column and foam liquid sprayed by the multi-function spray gun 502 are used to extinguish the fire by using the on-board fire water tank 201 and the on-board foam box 202; wherein: when using high-pressure fine water mist or full water column to extinguish the fire, the system power switch 604 should be turned on first, and then the fire pump group 506 is started by rotating the fire pump group start button 609, and the foam valve closing button 603 is pressed to close the foam liquid, at which time the multi-function spray gun 502 provides high-pressure fine water mist or full water column to extinguish the fire; if foam liquid is needed to extinguish the fire, the foam valve opening button 602 should be pressed to open the foam liquid, and the foam liquid ratio selection button 608 can be pressed to select the foam liquid with a suitable ratio to extinguish the fire; S4. In order to extend the time of vehicle fire fighting and rescue operations, the fire water tank water inlet 401 can be directly connected to the indoor fire hydrant in the building using a fire hose during rescue operations, and continuous water supply can be achieved using the indoor fire hydrant.

[0045] The above does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vehicle-mounted portable fire extinguishing device, characterized in that: include: A vehicle-mounted fire fighting box, comprising a vehicle-mounted fire fighting water tank and a vehicle-mounted foam box, wherein an equipment storage area and a rescue equipment installation platform are arranged on the upper part of the vehicle-mounted fire fighting water tank, and the rescue equipment installation platform can slide out or slide in relative to the vehicle-mounted fire fighting water tank; The rescue equipment comprises a hose reel, a proportioning mixer, a fire pump group and a control panel arranged above the rescue equipment installation platform. The hose reel is provided with a hose, the output end of the hose is connected to a multi-function spray gun, and the input end is connected to a vehicle-mounted fire fighting box through the fire pump group and the proportioning mixer.

2. A portable fire extinguishing device modified from an existing passenger car, characterized in that: The driver's seat and the co-pilot's seat in the front of the existing passenger car are retained; the second row of seats in the car and the spare tire cover in the trunk are removed, and the on-board portable fire-fighting device as claimed in claim 1 is installed; the on-board fire water tank and the on-board foam box are installed close to the chassis of the car, and when the trunk door of the car is opened during rescue operations, the rescue equipment can slide out of the car along with the rescue equipment installation platform.

3. The portable fire extinguishing device modified from an existing passenger vehicle according to claim 2 is characterized in that: The existing passenger car has a compartment chassis at the rear of the compartment provided with a fire water tank overflow outlet and a foam tank overflow outlet; The vehicle-mounted foam box is arranged on one side of the vehicle-mounted fire water tank, and is provided with a foam liquid connecting pipe, a foam box filling port, a foam box liquid level gauge and a foam box overflow pipe, and the foam box overflow pipe is connected to the water outlet of the foam box overflow port; The vehicle-mounted fire water tank is provided with a fire water connecting pipe, a fire water tank water filling port, a fire water tank level gauge and a fire water tank overflow pipe, and the fire water tank overflow pipe is connected to the fire water tank overflow outlet.

4. The portable fire extinguishing device modified from an existing passenger vehicle according to claim 2 is characterized in that: The equipment storage area includes a fire extinguishing equipment storage area and a protective equipment storage area arranged on the top of the vehicle-mounted fire water tank. The fire extinguishing equipment storage area is located in the left rear door of the vehicle, and the protective equipment storage area is located in the right rear door of the vehicle. The fire extinguishing equipment storage area and the protective equipment storage area both adopt a layered design, and various types of fire extinguishing equipment and protective equipment are placed in layers.

5. The portable fire extinguishing device modified from an existing passenger vehicle according to claim 4 is characterized in that: The fire-fighting equipment storage area is equipped with ABC dry powder fire extinguishers, dry powder fire bombs, and DN65 fire hoses; the protective equipment storage area is equipped with fire-fighting and rescue protective clothing, protective helmets, and protective boots.

6. The portable fire extinguishing device modified from an existing passenger vehicle according to claim 2 is characterized in that: A slide rail is installed at the bottom of the rescue equipment installation platform, and the rescue equipment installation platform is slidably connected to the vehicle-mounted fire water tank through the slide rail. A rescue equipment installation platform locking pin is also inserted on the rescue equipment installation platform.

7. The portable fire extinguishing device modified from an existing passenger vehicle according to claim 2 is characterized in that: The fire pump set is powered by a gasoline engine and is equipped with a small storage battery and a starter motor. The fire pump can be started directly by a fire pump set start button on the control panel.

8. The portable fire extinguishing device modified from an existing passenger vehicle according to claim 2 is characterized in that: The hose reel is connected to the proportioning mixer through a fire pump group. The input end of the proportioning mixer is connected to the vehicle-mounted fire water tank and the vehicle-mounted foam tank through a foam liquid connecting pipe and a fire water connecting pipe respectively. The fire-extinguishing water and foam liquid are mixed at the proportioning mixer and then output to the hose reel.

9. The portable fire extinguishing device modified from an existing passenger vehicle according to claim 2 is characterized in that: The control panel is provided with a working pressure display, a foam valve opening button, a foam valve closing button, a system power switch, a fire water tank liquid level display, a foam tank liquid level display, a working power indicator light, a foam liquid ratio selection button and a fire pump group start button.

10. A fire extinguishing method using a portable fire extinguishing device modified from an existing passenger vehicle as claimed in any one of claims 2 to 9, characterized in that: The following steps are involved: S1. The vehicle-mounted portable fire extinguishing device uses existing passenger vehicles as a carrying tool, which can reach the fire site conveniently and quickly; S2. After reaching the fire scene, quickly open the rear door of the passenger compartment, and then take out the protective equipment stored in the protective equipment storage area and put it on. After putting it on, take out the fire extinguishing equipment stored in the fire extinguishing equipment storage area to put out the fire; S3. When the fire extinguishing equipment stored in the fire extinguishing equipment storage area cannot achieve the fire extinguishing effect, the trunk lid of the vehicle can be opened, the rescue equipment installation platform locking pin can be pulled out, and the rescue equipment installation platform can be slid out. The fire can be extinguished by using the high-pressure fine water mist or full water column and foam liquid sprayed by the multi-function spray gun of the vehicle-mounted fire water tank and vehicle-mounted foam tank; S4. In order to extend the time of vehicle fire-fighting and rescue operations, the fire water tank filling port can be directly connected to the indoor fire hydrant in the building using a fire hose during rescue operations, and the indoor fire hydrant can be used to achieve continuous water supply.

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