Road wrecker

Abstract

The invention provides a road wrecker which comprises a vehicle body and further comprises a fire extinguishing cover, the fire extinguishing cover is arranged on the vehicle body, the bottom end of the fire extinguishing cover is open, and the fire extinguishing cover can be buckled on the road surface, so that a closed space used for containing a fault vehicle is formed in the fire extinguishing cover, and the closed space comprises a parking chamber and a cleaning chamber which are distributed up and down; a heat exchange assembly is arranged on the fire extinguishing cover; the lifting mechanism is used for lifting the fault vehicle into the parking room; the isolation mechanism is used for isolating the parking chamber from the cleaning chamber; the cleaning mechanism is used for cleaning the ground buckled by the fire extinguishing cover; a water storage assembly is further arranged on the vehicle body. According to the invention, the fire spreading risk can be effectively reduced, flame and heat are effectively prevented from spreading to surrounding vehicles or combustible materials, and meanwhile, direct emission of toxic gas and dense smoke generated by battery combustion to the atmosphere is remarkably reduced due to the sealing characteristic of the fire extinguishing cover; and fire-fighting wastewater containing harmful substances generated in the fire extinguishing process is limited in a cleaning chamber in the fire extinguishing cover.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic security, and particularly to a road breakdown vehicle. Background Art

[0002] With the increasing awareness of environmental protection and the continuous development of technology, electric vehicles (EVs) have become an important part of the modern transportation field and show a trend of rapid popularization. However, with the growth of the electric vehicle ownership, the number of fire accidents related to electric vehicles is also on the rise. Compared with the fires of traditional fuel vehicles, the fires of electric vehicles have their unique dangers.

[0003] After the electric vehicle battery pack catches fire, the combustion process often lasts for a long time, and there is a high risk of thermal runaway and explosion. Once the fire gets out of control, it is extremely easy to spread to the vehicles parked nearby or other combustibles, forming a situation of "conflagration in a row", causing greater property losses and safety threats. In addition, a large amount of toxic gases and thick smoke will be generated during the combustion of electric vehicle batteries and their internal materials. These toxic substances diffuse with the smoke, not only posing a serious threat to the life safety of the on-site personnel, but also causing serious air pollution to the surrounding environment.

[0004] The existing fire extinguishing methods have limited effects on suppressing the fires of electric vehicle batteries. Research and practice show that in order to effectively extinguish the fires of electric vehicle batteries and prevent the further development of thermal runaway, it is usually necessary to completely immerse the battery in water to achieve the purpose of suppressing combustion by a large amount of heat absorption and oxygen isolation. However, in practical applications, it is a challenging task to quickly and effectively completely immerse the battery pack of the on-fire electric vehicle, especially in the initial stage of emergency rescue.

[0005] Furthermore, although using the water immersion method to extinguish the battery fire can effectively control the fire, a large amount of fire extinguishing water generated thereby will dissolve a variety of harmful substances released by the combustion or breakage of the battery, including but not limited to heavy metals, electrolyte components, and other toxic compounds. If these fire extinguishing waste liquids containing pollutants are directly discharged without proper treatment, they will cause serious and long-term pollution to the environment such as soil and water sources, and may even enter the food chain, posing a major threat to the ecosystem and human health. Summary of the Invention

[0006] The present invention aims to solve the technical problems existing in the treatment of electric vehicle fires in the prior art, such as low fire extinguishing efficiency, difficulty in quickly achieving effective combustion suppression or immersion, generation of a large amount of polluted waste liquid and difficult treatment, and high environmental pollution risk.

[0007] To achieve the above object, the present invention provides a road breakdown vehicle, which includes a vehicle body, and further includes:

[0008] Fire extinguishing hood: The fire extinguishing hood is movably installed on the vehicle body and can be conveniently deployed above the faulty vehicle. Its bottom end is designed to be open, but it can be tightly buckled on the road surface during operation, thereby forming a relatively airtight space inside the fire extinguishing hood for accommodating the faulty vehicle. This airtight space is structurally or functionally divided into a parking chamber and a cleaning chamber that are distributed vertically.

[0009] Heat exchange component: Installed on the fire extinguishing hood, it is used for heat exchange with substances such as air, water, and flue gas inside the airtight space, aiming to reduce the internal temperature and inhibit combustion or thermal runaway.

[0010] Lifting mechanism: Set to lift the faulty vehicle from the ground to the parking chamber above the airtight space, facilitating subsequent processing and space separation.

[0011] Isolation mechanism: Used to effectively isolate the upper parking chamber from the lower cleaning chamber when needed to achieve partition management.

[0012] Cleaning mechanism: Used to clean the ground within the buckling range of the fire extinguishing hood and remove residues.

[0013] Water storage component: Set on the vehicle body, it includes at least one combustion inhibition water tank and a cooling water tank. The combustion inhibition water tank is connected to the airtight space through a pipeline and is used to supply water for fire extinguishing or combustion inhibition; the cooling water tank is connected to the heat exchange component to provide a cooling medium for it.

[0014] With the above structure, after the fire extinguishing hood covers the burning vehicle, a relatively enclosed environment can be formed. Injecting water into the hood from the combustion inhibition water tank can effectively immerse or continuously spray the vehicle, especially the battery part, to achieve the purpose of efficient fire extinguishing or combustion inhibition. At the same time, the heat exchange component works continuously to export the heat inside the hood and take it away by the cooling water, further controlling the temperature and preventing thermal runaway. More importantly, the sewage generated by fire extinguishing is restricted inside the fire extinguishing hood and can be collected through subsequent structures, avoiding direct discharge to the environment.

[0015] Preferably, a gantry is slidably connected to the vehicle body along its length direction, and a first horizontal power component is connected between the vehicle body and the gantry;

[0016] A first lifting seat is slidably connected to the gantry in the vertical direction, and a first lifting power component is connected between the first lifting seat and the gantry;

[0017] A load-bearing beam extending along the length direction of the vehicle body is provided on the first lifting seat, the fire extinguishing hood is slidably connected to the load-bearing beam, and a second horizontal power component is connected between the fire extinguishing hood and the first lifting seat.

[0018] Preferably, the lifting mechanism includes support columns symmetrically arranged inside the fire extinguishing cover. A second lifting seat is slidably connected to the support columns in the vertical direction, and a second lifting power assembly is connected between the second lifting seat and the support columns.

[0019] A supporting arm that can swing in the horizontal direction is hinged to the second lifting seat, and a swing power member is connected between the supporting arm and the second lifting seat.

[0020] Preferably, the isolation mechanism includes a bottom plate slidably connected to the fire extinguishing cover along the length direction of the vehicle body, and a third horizontal power assembly connecting the bottom plate and the fire extinguishing cover.

[0021] Preferably, the heat exchange component includes a meandering heat exchange water pipe and heat exchange fins arranged on the heat exchange water pipe.

[0022] Preferably, a clean water collecting pipe is connected between the heat exchange component and the cooling water tank, and a first control valve and a cooling device are arranged on the clean water collecting pipe.

[0023] Preferably, a circulating water pipe is connected between the heat exchange component and the cleaning chamber, and a sewage collecting pipe is connected between the flame suppression water tank and the cleaning chamber. A second control valve is arranged on the sewage collecting pipe.

[0024] Preferably, the cleaning mechanism includes a driving roller and a driven roller rotatably connected to the bottom end of the bottom plate, and a cleaning brush belt connecting the driving roller and the driven roller. The driving roller is connected with a cleaning motor.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. Reduced the risk of fire spread: The enclosed space formed by the fire extinguishing cover confines the fire and high temperature inside the cover, effectively preventing the flame and heat from spreading to surrounding vehicles or combustibles, avoiding the occurrence of "a chain of fires", and thus reducing secondary disasters and property losses on a larger scale.

[0027] 2. Reduced the diffusion of toxic gases and smoke and decreased air pollution: The airtight characteristic of the fire extinguishing cover significantly reduces the direct emission of toxic gases and thick smoke generated by battery combustion into the atmosphere, protects the safety of on-site rescue personnel, and reduces the pollution of the surrounding air environment.

[0028] 3. Effectively controlled and collected polluted waste liquid, avoiding secondary environmental pollution: The fire-fighting wastewater containing harmful substances generated during the fire extinguishing process is confined in the cleaning chamber inside the fire extinguishing cover and collected through subsequent structures such as the recovery branch, avoiding direct discharge into the environment and causing soil and water pollution. The cleaning mechanism can also conduct preliminary treatment on the ground residues. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 Fire extinguishing work flow chart of an embodiment of the present invention;

[0031] Figure 2 Debris removal work flow chart of an embodiment of the present invention;

[0032] Figure 3 Liquid circuit diagram of an embodiment of the present invention;

[0033] Figure 4 For Figure 3 Enlarged view of part A;

[0034] Figure 5 Structural schematic diagram of the fire extinguishing cover in an embodiment of the present invention;

[0035] Figure 6 For Figure 4 Enlarged view of part B.

[0036] Explanation of reference numerals:

[0037] 1, vehicle body;

[0038] 11, fire extinguishing cover; 111, parking chamber; 112, cleaning chamber;

[0039] 113, support column; 1131, second lifting seat; 1132, supporting arm; 1133, second lifting power assembly; 1134, swing power member;

[0040] 114, drive motor; 115, sliding gear; 116, second horizontal power assembly;

[0041] 12, water storage assembly; 121, flame suppression water tank; 122, cooling water tank; 123, clean water collection pipe; 124, sewage collection pipe; 125, cooling device; 126, circulating water pipe;

[0042] 13, heat exchange assembly; 131, heat exchange water pipe; 132, heat exchange fins;

[0043] 14, gantry; 141, first lifting power assembly; 142, first lifting seat; 143, load-bearing beam;

[0044] 15, bottom plate; 151, sliding groove; 152, rack; 153, cleaning brush belt; 154, driving roller; 155, cleaning motor. Detailed implementation manners

[0045] The drawings are only for illustrative purposes and should not be construed as limiting the patent; to better illustrate this embodiment, some components in the drawings may be omitted, enlarged or reduced, which does not represent the size of the actual product.

[0046] For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0047] As shown in the attached Figures 1-6 A road wrecking truck shown in the figure includes a vehicle body 1 and a movable fire extinguishing cover 11 provided on the vehicle body 1. The fire extinguishing cover 11 can be moved through a gantry 14 provided on the vehicle body 1.

[0048] In this embodiment, the gantry 14 is specifically embodied as a telescopic frame structure, which is installed on the chassis guide rail of the vehicle body 1. Its telescopic movement is powered by a first horizontal power component, which is a push hydraulic cylinder. The first horizontal power component is controlled by the hydraulic system of the vehicle and can accurately drive the gantry 14 to slide out or retract along the length direction of the vehicle body 1. As shown in steps S1 to S2 in Figure 1 , the gantry 14 moves the entire fire extinguishing cover 11 from the transportation position of the vehicle body 1 to the ground working area behind the vehicle. In addition, the gantry 14 usually also has an overall lifting function to smoothly place the fire extinguishing cover 11 on the ground and cover the obstacle vehicle. A first lifting seat 142 is provided on the gantry 14 to slide vertically. A load-bearing beam 143 extending along the length direction of the vehicle body 1 is provided on the first lifting seat 142. The fire extinguishing cover 11 is slidably connected to the load-bearing beam 143; a first lifting power component 141 is connected between the first lifting seat 142 and the gantry 14. The first lifting power component 141 includes a rotatable first lead screw, and the first lead screw is threadedly connected to the first lifting seat 142. The first lifting power component 141 further includes a first lifting motor for driving the first lead screw to rotate. A second horizontal power component 116 is connected between the fire extinguishing cover 11 and the first lifting seat 142. The second horizontal power component 116 is also a hydraulic cylinder. The movable end of the second horizontal power component 116 is fixedly connected to the fire extinguishing cover 11, and the second horizontal power component 116 can move the fire extinguishing cover 11 closer to or away from the first lifting seat 142.

[0049] The fire extinguishing cover 11 itself is a cover structure with a solid outer shell, preferably made of heat-resistant and impact-resistant metal or composite materials. The internal clear dimension is sufficient to accommodate common passenger electric vehicles, forming a relatively enclosed working space. The heat exchange component 13 includes a meandering heat exchange water pipe 131 and heat exchange fins 132 provided on the heat exchange water pipe 131. The heat exchange component 13 is integrally installed on the top or upper side wall of the fire extinguishing cover 11 to ensure effective contact and export of the high-temperature gas accumulated in the cover.

[0050] The bottom plate 15 is slidably connected to both the fire extinguishing cover 11 and the load-bearing beam 143. A first lifting power component 141 is provided on the gantry 14. The movable end of the first lifting power component 141 is connected to the first lifting seat 142, driving the first lifting seat 142 to drive the bottom plate 15 and the fire extinguishing cover 11 to move along the height direction of the vehicle body 1. The periphery of the bottom plate 15 is designed with a sealing structure (such as a heat-resistant and corrosion-resistant flexible sealing strip). When the bottom plate 15 is fully inserted into the lower part of the fire extinguishing cover 11, the sealing structure at its edge can closely fit with the inner wall of the fire extinguishing cover 11, thereby reliably dividing the space inside the cover into a parking room 111 above for accommodating the vehicle and fire extinguishing water; and a cleaning room 112 below. The cleaning room 112 is located below the bottom plate 15 and is used for ground cleaning operations.

[0051] Sliding grooves 151 extending along the length direction of the vehicle body 1 are provided on the bottom plate 15, and racks 152 are provided in the sliding grooves 151; the third horizontal power component includes a driving motor 114, and a sliding gear 115 meshing with the rack 152 is fixedly installed at the output end of the driving motor 114. The bottom plate 15 can be moved relative to the fire extinguishing cover 11 by driving the driving motor 114.

[0052] Support columns 113 are provided inside the fire extinguishing cover 11, and the bottom panel of the support column 113 is higher than the bottom plate 15 to avoid interference between the two. A second lifting seat 1131 is slidably connected to the support column 113 in the vertical direction. A supporting arm 1132 that can swing horizontally is hinged on the second lifting seat 1131. A second lifting power component 1133 is connected between the second lifting seat 1131 and the support column 113. The second lifting power component 1133 includes a rotatable second lead screw, and the second lead screw is threadedly connected to the second lifting seat 1131. The second lifting power component 1133 also includes a second lifting motor for driving the second lead screw to rotate. A swing power member 1134 is connected between the supporting arm 1132 and the second lifting seat 1131. The swing power member 1134 is used to control the opening or closing of the supporting arm 1132. When the bottom plate 15 is about to be inserted into the fire extinguishing cover 11, the supporting arm 1132 first opens to leave a clearance space, and then closes to lift the vehicle. After the fire is initially controlled, the support column 113 will lift the obstacle vehicle as a whole by a certain distance, so that its bottom completely leaves the plane where the bottom plate 15 is about to be inserted, thereby making room for the insertion of the bottom plate 15.

[0053] A water storage assembly 12 is provided on the vehicle body 1. The water storage assembly 12 includes a fire suppression water tank 121 and a cooling water tank 122. The fire suppression water tank 121 stores fire-fighting water for extinguishing fires and suppressing combustion; the cooling water tank 122 stores a cooling medium for the cooling cycle of the heat exchange assembly 13. A first water supply pipe is connected between the fire suppression water tank 121 and the fire suppression hood 11, and a first water pump is provided on the first water supply pipe, which can inject a large amount of and evenly inject fire suppression water into the fire suppression hood 11 to submerge the obstacle vehicle.

[0054] A second water supply pipe is provided between the cooling water tank 122 and the heat exchange assembly 13, and a second water pump is provided on the second water supply pipe. The second water pump can transport the cooling water in the cooling water tank to the heat exchange assembly 13, so that the cooling water flows through the heat exchange assembly 13, and then takes away the heat on the heat exchange assembly 13. The cooling water that absorbs heat then flows out of the heat exchange assembly 13. In order to ensure the stable water temperature in the fire suppression hood 11, a cooling device 125 is provided on the clean water collection pipe 123. The cooling device 125 is specifically a spray cooling tower. The structure of the spray cooling tower is known to those skilled in the art, so it will not be described in detail here. The heat is dissipated into the atmosphere through the cooling device 125.

[0055] The clean water collection pipe 123 is responsible for flowing the water in the heat exchange assembly 13 to the cooling water tank 122. The sewage collection pipe 124 is responsible for pumping the sewage that may contain harmful substances collected in the cleaning chamber 112 back to the fire suppression water tank 121 for safe temporary storage. A third water pump is provided on the sewage collection pipe 124, and the third water pump is used to pump the sewage in the cleaning chamber 112 into the fire suppression water tank 121.

[0056] A circulating water pipe 126 is connected between the heat exchange assembly 13 and the cleaning chamber 112, and the circulating water pipe 126 is used to transport the relatively high-temperature water flowing through the heat exchange assembly 13 into the cleaning chamber 112. A first control valve is provided on the clean water collection pipe 123, and a second control valve is provided on the sewage collection pipe 124. When the second control valve is closed and the first control valve is opened, the clean water collection pipe 123 introduces the outlet water of the heat exchange assembly 13 into the cooling water tank 122 instead of flowing into the cleaning chamber 112; when the first control valve is closed and the second control valve is opened, the outlet water of the heat exchange assembly 13 is introduced into the cleaning chamber 112, and the sewage in the cleaning chamber 112 will be pumped back to the fire suppression water tank 121 through the sewage collection pipe 124.

[0057] After a series of preliminary steps such as extinguishing and suppressing the fire of the obstacle vehicle, lifting (through the support column 113), and inserting the bottom plate (forming the parking chamber 111 and the cleaning chamber 112) are completed, the road wrecking truck immediately starts the ground cleaning procedure. The operator issues an instruction through the control system to start the cleaning mechanism. This mechanism mainly includes a driving roller 154 and a driven roller rotatably connected to the bottom end of the bottom plate 15, and a cleaning brush belt 153, where the driving roller 154 is driven by a cleaning motor 155. At this time, various residues after the vehicle combustion may remain on the ground in the cleaning chamber 112, such as battery electrolyte, molten plastic and rubber, oil stains, etc. To more effectively remove these dirt, the cooling water carrying the heat energy from the heat exchange component 13 and having a higher temperature is transported into the cleaning chamber 112 through the circulating water pipe 126, and the continuously rotating cleaning brush belt 153 performs a strong and continuous mechanical scrubbing on the ground.

[0058] The relatively high water temperature can significantly soften viscous or semi-cured pollutants, such as molten plastic and rubber, and reduce their adhesion. For some soluble or partially soluble electrolyte residues and combustion products, warm water has a stronger dissolving ability. For oily stains, warm water can effectively reduce their viscosity, making it easier to be washed away by water flow; further, warm water is more likely to penetrate into the tiny gaps between the stains and the ground, helping to destroy the attachment structure of the stains, and cooperating with the physical action of the bristles to achieve a more thorough peeling. Compared with using cold water, the heat energy of warm water significantly enhances the ability to remove stubborn stains. The cleaning process is faster, the cleaning effect is more thorough, and it can better restore the cleanliness of the ground at the accident scene.

[0059] The following is a detailed explanation of the working process of this embodiment (refer to Figure 1 and Figure 2 ):

[0060] Transport state (s1): The lifting mechanism, the isolation mechanism, and the cleaning mechanism are all completely loaded on the gantry 14 at the rear of the vehicle body 1 of the road wrecking truck. The vehicle is in a driving or standby state.

[0061] Deployment preparation (s2): After arriving at the accident scene, start the first horizontal power component, and smoothly move the gantry 14 together with the first lifting seat 142, the load-bearing beam 143, and the fire extinguishing cover 11 carried thereon to the rear of the vehicle, and the fire extinguishing cover 11 reaches the first working position.

[0062] Fire extinguishing cover 11 preparation (s3): Further start the second horizontal power component 116, and the first horizontal power component 116 pushes the fire extinguishing cover 11 to move backward relative to the bottom plate 15 and the load-bearing beam 143 so that the fire extinguishing cover 11 reaches the second working position, and the bottom end of the fire extinguishing cover 11 is open to accommodate the faulty vehicle.

[0063] Cover vehicle fire extinguishing (S4): Through the first lifting power assembly 141 of the gantry 14, drive the fire extinguishing cover 11 to descend through the first lifting seat 142 to cover the fire-blocking vehicle on the ground (shown by the dotted line in the figure). Then start the water storage assembly 12, and the flame suppression water tank 121 supplies water into the fire extinguishing cover 11 for fire extinguishing or flame suppression.

[0064] Bottom plate insertion (S5): After the fire weakens and the heat exchange assembly 13 controls the temperature inside the fire extinguishing cover 11 to a certain extent, start the support column 113 inside the fire extinguishing cover 11 to lift the obstacle vehicle to a certain height. The supporting arm 1132 on the support column 113 rotates a certain angle and then abuts against the chassis of the faulty vehicle. Subsequently, the second lifting seat 1131 drives the supporting arm 1132 to move upward, finally lifting the vehicle.

[0065] Further, in the state where the vehicle is lifted, under the action of the third horizontal power assembly, the bottom plate 15 moves towards the direction close to the fire extinguishing cover 11 until the bottom plate 15 is completely inserted into the fire extinguishing cover 11, and its edge is closely attached to the inner wall of the fire extinguishing cover 11 to form an effective seal. In this way, the vehicle and most of the fire extinguishing water are enclosed in the parking chamber 111 above the bottom plate 15, and the space below the bottom plate 15 becomes the cleaning chamber 112. At this time, the cleaning brush belt 153 can be started, and the second control valve is opened, so that while cleaning the ground, the sewage accumulated in the cleaning chamber 112 is pumped back to the flame suppression water tank 121 through the sewage collection pipe 124. After the ground cleaning is completed (specifically, the operator can judge the ground cleaning state by observing the clarity of the water flowing out of the sewage collection pipe 124. When the water flowing out of the sewage collection pipe 124 becomes relatively clear, it is considered that the ground cleaning is completed), close the second control valve and open the first control valve, and introduce the water discharged from the heat exchange assembly 13 into the cooling water tank 122 through the clean water collection pipe 123. Among them, the cooling device 125 on the clean water collection pipe 123 cools the flowing clean water, and then flows into the cooling water tank 122, thus realizing the recycling of water.

[0066] Retraction of the fire extinguishing cover 11 (S6): Under the action of the second horizontal power assembly 116, the fire extinguishing cover 11 retracts to the first working position together with the bottom plate 15.

[0067] Lifting of the fire extinguishing cover 11 (S7): Under the action of the first lifting power assembly 141, the fire extinguishing cover 11 is lifted to the initial height together with the bottom plate 15.

[0068] Reset of the fire extinguishing cover 11 (S8): Under the action of the first horizontal power assembly, the fire extinguishing cover 11 is reset to the initial position together with the bottom plate 15.

[0069] Through the above structure and workflow, this embodiment realizes the integrated operation of quickly covering a burning electric vehicle, efficiently suppressing combustion and dissipating heat, lifting the vehicle, sealing and recycling sewage, and cleaning the site, effectively solving the problems of difficult fire extinguishing, high risk of thermal runaway, and difficult treatment of polluted waste liquid mentioned in the background art.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A road tow truck, comprising a vehicle body, characterized in that: Also includes: A fire extinguishing hood, which is movably arranged on the vehicle body, has an open bottom and can be buckled on the road surface, so as to form a closed space for accommodating the faulty vehicle in the fire extinguishing hood, and the closed space includes a parking room and a cleaning room distributed up and down; A heat exchange component, which is arranged on the fire extinguishing hood and is used to exchange heat with the material in the enclosed space; A lifting mechanism, the lifting mechanism is used to lift the broken-down vehicle into the parking room; An isolation mechanism, the isolation mechanism is used to isolate the parking room from the cleaning room; A cleaning mechanism, the cleaning mechanism is used to clean the ground on which the fire extinguishing cover is fastened; A water storage assembly is arranged on the vehicle body, and comprises a fire suppression water tank and a cooling water tank. The fire suppression water tank is connected to the enclosed space, and the cooling water tank is connected to the heat exchange assembly.

2. A road tow truck according to claim 1, characterized in that: The vehicle body is slidably connected to a gantry along its length direction, and a first horizontal power assembly is connected between the vehicle body and the gantry; A first lifting seat is slid on the gantry in a vertical direction, and a first lifting power assembly is connected between the first lifting seat and the gantry; The first lifting seat is provided with a load-bearing beam extending along the length direction of the vehicle body, the fire extinguishing hood is slidably connected to the load-bearing beam, and a second horizontal power assembly is connected between the fire extinguishing hood and the first lifting seat.

3. A road tow truck according to claim 1, characterized in that: The lifting mechanism comprises a support column symmetrically arranged in the fire extinguishing hood, a second lifting seat is slidably connected to the support column in a vertical direction, and a second lifting power assembly is connected between the second lifting seat and the support column; A supporting arm which can swing in a horizontal direction is hinged on the second lifting seat, and a swinging power member is connected between the supporting arm and the second lifting seat.

4. A road tow truck according to claim 1, characterized in that: The isolation mechanism comprises a bottom plate which is slidably connected with the fire extinguishing hood along the length direction of the vehicle body, and a third horizontal power assembly which connects the bottom plate and the fire extinguishing hood.

5. A road tow truck according to claim 1, characterized in that: The heat exchange component comprises a winding water exchange pipe and heat exchange fins arranged on the water exchange pipe.

6. A road tow truck according to claim 1, characterized in that: A clean water collecting pipe is connected between the heat exchange component and the cooling water tank, and a first control valve and a cooling device are arranged on the clean water collecting pipe.

7. A road tow truck according to claim 6, characterized in that: A circulating water pipe is connected between the heat exchange component and the cleaning chamber, a sewage collecting pipe is connected between the flame retardant water tank and the cleaning chamber, and a second control valve is provided on the sewage collecting pipe.

8. A road tow truck according to claim 1, characterized in that: The cleaning mechanism comprises a driving roller and a driven roller rotatably connected to the bottom end of the bottom plate, and a cleaning brush belt connecting the driving roller and the driven roller. The driving roller is connected to a cleaning motor.

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