Device for making mud by taking soil on site and forest fire fighting vehicle

Abstract

The invention provides a device for making mud by taking soil on site and a forest fire truck, which relate to the field of fire trucks and include a vehicle body with wheels and a mixing drum, wherein the mixing drum is arranged on the vehicle body; the rotational power of the mixing drum comes from the rotation of the wheels; a plurality of mud taking grooves are arranged in a circular array on the wheels, and the mud taking grooves are arranged obliquely; the top opening width of the mud taking grooves is smaller than the width of the bottom of the mud taking grooves; a feed guide plate is provided on the front end of the vehicle body, and a feed guide groove is provided on the feed guide plate, the feed end of the feed guide groove is located directly below the mud taking groove, and the discharge end of the feed guide groove faces the feed inlet of the mixing drum; the invention can effectively spray mud to extinguish fire, and can also obtain soil materials on site and make mud, and the application can ensure that soil is obtained when the vehicle is moving, reduce the soil crushing process, and reduce the complexity of operation; when applied to grassland fire extinguishing, the wheels can cut the grass to form a fireproof isolation belt while the fire truck is moving to obtain soil.

Description

Technical Field

[0001] The invention relates to the field of fire fighting vehicles, and in particular to a device for making mud by taking soil on site and a forest fire fighting vehicle. Background Art

[0002] In the prior art, for forest fire rescue, first, manpower is used, which has limited effect and is prone to casualties; second, air support, aircraft firefighting, this method is costly and not suitable for small areas; third, fire trucks are used for rescue. The long-lasting fire retardant used in fire trucks has a high fire extinguishing ability, but requires support from a special mixing station, so it is subject to great limitations. In response to the above problems, those skilled in the art proposed to use fire trucks to spray mud to cover the ignition material and flammable materials, and to isolate oxygen through the mud to achieve the effect of extinguishing the fire, such as the forest mud fire truck disclosed in the application number 200620158544.1, but the fire truck did not explain how to use local materials.

[0003] Regarding the method of taking soil on the spot, patent CN109731256A discloses a forest fire extinguisher that can realize local fire extinguishing by throwing soil. The fire extinguisher is separately provided with a digging mechanism, and then the obtained soil is crushed. The obtained soil can be used only after crushing, and the operation process is cumbersome; and the wheels of the fire extinguisher cannot move when obtaining soil, which is not convenient for large-scale fire extinguishing and has low fire extinguishing efficiency. Thirdly, since the wheels of the fire extinguisher cannot move when digging soil, the speed of digging the isolation belt is slow, requiring a lot of manual assistance. Summary of the invention

[0004] The purpose of the present invention is to provide a device for making mud by taking soil on site and a forest fire truck. In view of the shortcomings of the prior art, the present invention can obtain soil materials on site and make mud on the premise of effectively spraying mud to extinguish fire. In addition, the present application can ensure that soil is obtained while the vehicle is moving, reduce the soil crushing process, and reduce the complexity of operation. When used in grassland fire fighting, the wheels can cut the grass to form a fire isolation zone while the fire truck is moving to obtain soil.

[0005] The embodiment of the present invention is achieved through the following technical scheme: a device for making mud by taking soil on site, comprising a vehicle body with wheels and a mixing drum, wherein the mixing drum is arranged on the vehicle body; the rotational power of the mixing drum comes from the rotation of the wheels; a plurality of mud collecting grooves are arranged in a circular array on the wheels, and the mud collecting grooves are arranged obliquely; the top opening width of the mud collecting groove is smaller than the width of the bottom of the mud collecting groove; a feed guide plate is provided at the front end of the vehicle body, a feed guide groove is opened on the feed guide plate, a feed end of the feed guide groove is located directly below the mud collecting groove, and a discharge end of the feed guide groove faces the feed inlet of the mixing drum.

[0006] Furthermore, there is an angle of 10°-18° between the transverse length direction of the mud collecting groove and the end face of the wheel, and the end of the mud collecting groove close to the inner end of the wheel is lower in height than the end of the mud collecting groove close to the outer end of the wheel.

[0007] Furthermore, the geometric shape of the material guide plate is "T" or "Y"; the material guide plate includes a horizontal arm and a longitudinal arm, the horizontal arm is provided with a horizontal material trough of the material guide trough, and the longitudinal arm is provided with a longitudinal material trough of the material guide trough, the feed end of the longitudinal material trough is connected with the discharge end of the horizontal material trough, the feed end of the horizontal material trough is located directly below the mud trough, and the discharge end of the longitudinal material trough faces the mixing drum.

[0008] Furthermore, the angle between the length direction of the transverse trough and the horizontal line is 3°-8°, and the feed port of the transverse trough is higher than the discharge port of the transverse trough; the angle between the length direction of the longitudinal trough and the horizontal line is 50°-85°.

[0009] Furthermore, an annular placement groove is provided on the inner end surface of the wheel, and the two ends of the cross arm are respectively placed in the placement grooves on the two wheels, and the shapes of the two ends of the cross arm are arc segments matching the inner walls of the placement grooves.

[0010] Furthermore, a water tank is provided on the vehicle body, a high-pressure water pump is connected to the water outlet of the water tank, a high-pressure water pipe is connected to the water outlet of the high-pressure water pump, the water outlet of the high-pressure water pipe is located above the material guide trough, and the water outlet of the high-pressure water pipe is placed on the outer end face of the wheel and close to the bottom of the mud collecting trough.

[0011] Furthermore, the water outlet of the water tank is connected to the water inlet of the mixing drum through a water pipe.

[0012] Furthermore, a wheel axle is provided between the wheels, and the wheel axle is meshingly connected to the mixing drum; a drum lower groove matching the outer dimensions of the mixing drum is provided on the vehicle body, and a plurality of limit grooves are circumferentially arranged in the drum lower groove, and a limit ring is fixedly provided on the outer wall of the mixing drum, and the limit ring is slidably connected to the limit groove.

[0013] A forest fire fighting vehicle, using the device for making mud by taking soil on site, also includes a vehicle shell, the bottom of the vehicle shell is provided with a drum groove matching the outer dimensions of a mixing drum, the vehicle shell buckle cover is fixedly connected to the vehicle body on the mixing drum; the top of the vehicle shell is provided with a high-pressure injection device, the feed port of the high-pressure injection device is connected with the discharge port of the mixing drum.

[0014] Furthermore, the injection device includes a turntable that can rotate 360°, a spray pipe and a pneumatic telescopic rod. The turntable is rotatably connected to the vehicle shell, the bottom of the spray pipe is hinged to the turntable, and the two ends of the pneumatic telescopic rod are respectively hinged to the spray pipe and the turntable; the feed port of the high-pressure injection device is arranged in the spray pipe.

[0015] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0016] 1. The present invention has a reasonable design and a simple structure. By arranging the mixing drum on the vehicle body, it effectively ensures that the mud supply can be obtained at any time without external assistance;

[0017] 2. The present invention provides mud collecting grooves on the wheels, which can effectively collect mud while the vehicle is driving, so as to achieve the purpose of obtaining materials locally;

[0018] 3. The present invention can effectively prevent large pieces of soil from entering the mud trough by setting the mud trough into a special shape, thereby requiring subsequent crushing work and reducing the operation steps; and the obtained soil is smaller and easier to form mud after stirring;

[0019] 4. The present invention provides a feed trough on the feed plate, and the feed plate is specially installed, so that the mud from the mud trough can be effectively received and sent to the mixing drum. The entire process from mud collection to making mud is completed automatically by mechanical cooperation without manual assistance.

[0020] 5. The present invention can effectively spray mud to cover the fire through a high-pressure spray device, quickly isolate the combustibles from the combustion-supporting materials and reduce the temperature (the water in the mud evaporates and absorbs heat from the environment), thereby achieving the forest fire fighting effect; part of the mud falls on the leaves to prevent the fire from spreading;

[0021] 6. The forest fire fighting vehicle disclosed in the present invention is not only suitable for forest fires, but also for grassland fire fighting. When used for grassland fire fighting, the fire fighting vehicle can spray mud to cover the fire site and divide the fire isolation zone at the same time. On the other hand, when the fire fighting vehicle is moving, the mud grooves on the wheels can effectively cut the grass to form a fire isolation zone, and the digging speed of the isolation zone is fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1A schematic diagram of the structure of a forest fire truck from an oblique side view provided in Example 2 of the present invention;

[0024] Figure 2 A front structural schematic diagram of a forest fire fighting vehicle provided in Example 2 of the present invention;

[0025] Figure 3 A schematic side structural diagram of a forest fire fighting vehicle provided in Example 2 of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a device for making mud by taking soil on site provided in Example 1 of the present invention;

[0027] Figure 5 A schematic diagram of the structure of the feed guide plate provided in Example 1 of the present invention;

[0028] Figure 6 A schematic diagram of the wheel structure provided in Example 1 of the present invention;

[0029] Figure 7 A schematic diagram of a vehicle body structure provided in Example 1 of the present invention;

[0030] Figure 8 A schematic diagram of the connection between the mixing drum and the wheel axle provided in Example 1 of the present invention;

[0031] Icons: 1-wheel; 2-mud trough; 3-feeding plate; 301-cross arm; 302-longitudinal arm; 4-bevel gear; 5-placing trough; 6-feeding trough; 601-transverse trough; 602-longitudinal trough; 7-high-pressure water pipe; 8-gear ring; 9-water tank; 10-injection pipe; 11-pneumatic telescopic rod; 12-vehicle body; 13-vehicle shell; 14-turntable; 15-mixing drum; 16-wheel axle; 17-drum lower groove; 18-limiting groove. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be noted that if the terms "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal", "inside", "outside" and the like appear to indicate directions or positional relationships, they are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the application is usually placed when in use, and are only for the convenience of describing the present invention and simplifying the description.

[0033] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connected" should be understood in a broad sense.

[0034] Example 1

[0035] like Figure 1-Figure 8 As shown, a device for taking soil on site to make mud, such as Figure 1 and Figure 4 As shown, it includes a vehicle body 12 with wheels 1 and a mixing drum 15, and the mixing drum 15 is arranged on the vehicle body 12; the rotational power of the mixing drum 15 comes from the rotation of the wheel 1. By arranging the mixing drum 15 on the vehicle body 12, the mixing drum 15 can make the acquired soil into mud, effectively ensuring that the supply of mud can be obtained at any time without external assistance; a plurality of mud taking grooves 2 are arranged in a circular array on the wheel 1, and the mud taking grooves 2 are arranged obliquely to ensure that the mud can smoothly enter the feed chute 6; the top opening width of the mud taking groove 2 is smaller than the bottom width of the mud taking groove 2, which can effectively prevent large pieces of mud from entering The mud is fed into the mud trough 2, thereby requiring subsequent crushing work and reducing the number of operating steps; and the obtained mud is smaller and easier to form mud after stirring; a guide plate 3 is provided at the front end of the vehicle body 12, and a guide trough 6 is provided on the guide plate 3, and the feeding end of the guide trough 6 is located directly below the mud trough 2, and the discharge end of the guide trough 6 faces the feeding port of the mixing drum 15. The guide plate 3 is provided with a guide trough 6, and the special installation of the guide plate 3 can effectively receive the mud from the mud trough 2 and send it to the mixing drum 15. The entire process from taking mud to making mud is automatically completed by mechanical cooperation and does not require manual assistance.

[0036] In this embodiment, in order to ensure that the mud collecting trough 2 can stably obtain mud, looking directly at the wheel 1 from the side of the vehicle body 12, along the rotation direction of the wheel 1, the front and rear edges of the top opening of the mud collecting trough 2 are 1cm-2cm lower than the rear edge, forming a digging-like mechanism.

[0037] In this embodiment, in order to further prevent large pieces of soil from entering the feed chute 6, when used on grasslands, in order to prevent grass clippings from entering the mixing drum 15 through the feed chute 6 and affecting the quality of the mud, a wire filter can be provided in the mud chute 2, and the wire filter is close to the inner end face of the wheel.

[0038] In this embodiment, if Figure 6 As shown, in order to facilitate the movement of the acquired soil toward the inner end face of the wheel 1, ensure that the soil smoothly enters the material guide chute 6, and effectively prevent the soil from being thrown toward the outer end face of the wheel 1 due to the action of centripetal force, there is an angle of 10°-18° between the transverse length direction of the mud collecting chute 2 and the end face of the wheel 1, and the angle is preferably 15°, and the end of the mud collecting chute 2 close to the inner end of the wheel 1 is lower in height than the end of the mud collecting chute 2 close to the outer end of the wheel 1.

[0039] In this embodiment, if Figure 5As shown, the geometric shape of the guide plate 3 is "T"-shaped or "Y"-shaped, and the two shapes described here have the same effect. The geometric shape of the guide plate 3 in this embodiment is preferably "T"-shaped, which is convenient for cooperation with the wheel 1 and avoids the angle concerns caused by the "Y" shape; the guide plate 3 includes a horizontal arm 301 and a longitudinal arm 302, and the horizontal arm 301 is provided with a horizontal trough 601 of the guide trough 6, and the longitudinal arm 302 is provided with a longitudinal trough 602 of the guide trough 6, and the feed end of the longitudinal trough 602 is connected with the discharge end of the horizontal trough 601, and the feed end of the horizontal trough 601 is located directly below the mud trough 2, and the discharge end of the longitudinal trough 602 faces the mixing drum 15; the mud in the mud trough 2 falls into the horizontal trough 601, and then enters the longitudinal trough 602 and then enters the mixing drum 15.

[0040] In this embodiment, in order to prevent the material from flowing too fast in the transverse trough 601, causing the material to rush through the discharge port of the transverse trough 601 due to inertia, and to allow the material to flow to the discharge port of the transverse trough 601 under the action of gravity, the angle between the length direction of the transverse trough 601 and the horizontal line is 3°-8°, and in this embodiment, the angle is preferably 5°, and the feed port of the transverse trough 601 is higher than the discharge port of the transverse trough 601.

[0041] In this embodiment, in order to allow the material flowing into the longitudinal trough 602 to quickly enter the mixing drum 15 and prevent the material from accumulating and clogging in the longitudinal trough 602, the angle between the length direction of the longitudinal trough 602 and the horizontal line is selected to be 50°-85° according to actual conditions, and a higher angle is preferred.

[0042] It should be noted that the above-mentioned angle is measured when the device is placed on a horizontal plane in a physical sense, and the horizontal line is a straight line within the horizontal plane.

[0043] In order to reduce the material spilling outside the feed chute 6, in this embodiment, Figure 6 As shown, an annular placement groove 5 is provided on the inner end face of the wheel 1, and the two ends of the cross arm 301 are respectively placed in the placement grooves 5 on the two wheels 1; in order to prevent the cross arm 301 from affecting the rotation of the wheel 1 and ensure that the wheel 1 can rotate smoothly, the shapes of the two ends of the cross arm 301 are arc segments that match the inner walls of the placement groove 5.

[0044] In this embodiment, a water tank 9 is provided on the vehicle body 12 to provide water for making mud. The water outlet of the water tank 9 is connected to the water inlet of the mixing drum 15 through a water pipe.

[0045] In this embodiment, a valve may be provided on the water pipe, and the opening of the valve may control the proportion of cement.

[0046] In this embodiment, in order to prevent the acquired mud from sticking to the mud collecting trough 2 and effectively avoid clogging, a high-pressure water pump is connected to the water outlet of the water tank 9, and the water outlet of the high-pressure water pump is connected to a high-pressure water pipe 7. The water outlet of the high-pressure water pipe 7 is located above the feed trough 6, and the water outlet of the high-pressure water pipe 7 is placed on the outer end face of the wheel 1 and close to the bottom of the mud collecting trough 2.

[0047] It should be noted that another function of the high-pressure water pipe 7 is to initially dilute the soil, increase the fluidity of the soil, reduce the friction between the soil and the device, and ensure that the soil mixed with water can smoothly enter the mixing drum 15.

[0048] In this embodiment, if Figure 6 and Figure 8 As shown, a wheel axle 16 is provided between the wheels 1, the wheel axle 16 supports the vehicle body 12, and the wheel axle 16 is meshed and connected with the mixing drum 15; in order to ensure stable transmission, a bevel gear 4 is provided on the wheel axle 16, and a gear ring 8 is provided on the mixing drum 15, and the wheel axle 16 transmits power to the mixing drum 15 through the meshing connection between the bevel gear 4 and the gear ring 8.

[0049] It should be noted that if Figure 5 and Figure 8 As shown, since the meshing of the bevel gear 4 and the ring gear 8 will occupy a certain space size, it is necessary to ensure that the discharge port of the longitudinal trough 602 can be close to the feed port of the mixing drum 15, and can even partially extend into the feed port of the mixing drum 15. The two are prone to size conflicts. In this embodiment, according to actual conditions, a travel gap that does not hinder the rotation of the ring gear 8 can be selected at the end of the guide plate 3 close to the mixing drum 15.

[0050] In this embodiment, if Figure 7 As shown, in order to ensure that the mixing drum 15 can slide stably in the vehicle body 12, the vehicle body 12 is provided with a lower drum groove 17 that matches the outer dimensions of the mixing drum 15, and the mixing drum 15 is placed in the lower drum groove 17, and a plurality of limiting grooves 18 are circumferentially arranged in the lower drum groove 17, preferably two limiting grooves 18, and a limiting ring is fixedly provided on the outer wall of the mixing drum 15, and the limiting ring is slidably connected to the limiting groove 18.

[0051] In order to reduce the sliding friction between the limit ring and the bottom of the limit groove 18 and reduce the energy consumed by friction, in this embodiment, a steel ball can be added between the bottom of the limit groove 18 and the limit ring to convert the sliding friction into rolling friction and reduce the energy consumed by friction.

[0052] Example 2

[0053] like Figure 1-Figure 3As shown, a forest fire truck uses the device for making mud by taking soil on site as described in Example 1, and also includes a car body 13. The bottom of the car body 13 is provided with a drum groove that matches the outer dimensions of the mixing drum 15. The car body 13 is buckled on the mixing drum 15 and is fixedly connected to the car body 12 by one or more methods such as welding and bolts; a water tank 9 can be arranged on the top of the car body 13; a high-pressure injection device is also provided on the top of the car body 13, and the high-pressure injection device is used to inject the mud in the mixing drum 15, and the injection angle and injection direction can be adjusted. The feed port of the high-pressure injection device is connected to the discharge port of the mixing drum 15.

[0054] In this embodiment, in order to increase corrosion resistance, the vehicle body 12 and the vehicle shell 13 are preferably made of galvanized steel sheets.

[0055] The injection device includes a turntable 14 that can rotate 360°, a spray pipe 10 and a pneumatic telescopic rod 11. The turntable 14 is rotatably connected to the vehicle shell 13, the bottom of the spray pipe 10 is hinged to the turntable 14, and the two ends of the pneumatic telescopic rod 11 are respectively hinged to the spray pipe 10 and the turntable 14; the feed port of the high-pressure injection device is arranged in the spray pipe 10.

[0056] It should be noted that the turntable 14 adjusts the spraying direction of the spray pipe 10, and the rotation of the turntable 14 can be controlled by a servo motor; the pneumatic telescopic rod adjusts the elevation angle of the spray pipe 10, and the telescopic length of the pneumatic telescopic rod 11 is controlled by the air intake.

[0057] In this embodiment, the ratio of mud to water should be determined comprehensively according to factors such as the injection distance of the mud, the elevation angle of the injection pipe 10 and the season.

[0058] In order to improve the automation capability of the forest fire truck, in this embodiment, a wireless controller and a camera can be installed on the fire truck. The valve on the water pipe between the water tank 9 and the mixing drum 15 is preferably an electromagnetic valve with adjustable flow. The operator can send instructions to the wireless controller through a wireless signal. The wireless controller controls the servo motor, starts the telescopic rod to make corresponding actions, and gives the wheel 1 speed and feedback signals to the operator; the camera is used to observe the real-time scene and detect the distance required for spraying.

[0059] It should be noted that the forest fire truck described in this embodiment is not only suitable for forest fires, but also for grassland fire fighting. When used for grassland fire fighting, the fire truck can, on the one hand, spray mud to cover the fire site and divide the fire isolation zone. On the other hand, while the fire truck is moving, the mud grooves on the wheels can effectively cut the grass to form a fire isolation zone, and the digging speed of the isolation zone is fast and efficient.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for making mud by taking soil on site, characterized in that: The invention comprises a vehicle body (12) having a wheel (1) and a mixing drum (15), wherein the mixing drum (15) is arranged on the vehicle body (12); a wheel axle (16) is arranged between the wheels (1), and the wheel axle (16) is meshed and transmission-connected with the mixing drum (15); a plurality of mud collecting grooves (2) are arranged in a circular array on the wheel (1); the width of the top opening of the mud collecting groove (2) is smaller than the width of the bottom of the mud collecting groove (2); a material guide plate (3) is arranged at the front end of the vehicle body (12), a material guide groove (6) is arranged on the material guide plate (3), a feeding end of the material guide groove (6) is located directly below the mud collecting groove (2), and a discharging end of the material guide groove (6) faces the feeding port of the mixing drum (15); There is an angle of 10°-18° between the transverse length direction of the mud collecting groove (2) and the end surface of the wheel (1), and the end of the mud collecting groove (2) close to the inner end of the wheel (1) is lower in height than the end of the mud collecting groove (2) close to the outer end of the wheel (1); The geometric shape of the material guide plate (3) is "T"-shaped or "Y"-shaped; the material guide plate (3) comprises a horizontal arm (301) and a longitudinal arm (302); the horizontal arm (301) is provided with a transverse material trough (601) of the material guide trough (6); the longitudinal arm (302) is provided with a longitudinal material trough (602) of the material guide trough (6); the feed end of the longitudinal material trough (602) is connected to the discharge end of the horizontal material trough (601); the feed end of the horizontal material trough (601) is located directly below the mud taking trough (2); and the discharge end of the longitudinal material trough (602) faces the mixing drum (15).

2. The device for making mud by taking soil on site according to claim 1, characterized in that: The angle between the length direction of the transverse trough (601) and the horizontal line is 3°-8°, and the feed port of the transverse trough (601) is higher than the discharge port of the transverse trough (601); the angle between the length direction of the longitudinal trough (602) and the horizontal line is 50°-85°.

3. The device for making mud by taking soil on site according to claim 1, characterized in that: An annular placement groove (5) is provided on the inner end surface of the wheel (1), and the two ends of the cross arm (301) are respectively placed in the placement grooves (5) on the two wheels (1), and the shapes of the two ends of the cross arm (301) are arc segments that match the inner walls of the placement grooves (5).

4. The device for making mud by taking soil on site according to claim 1, characterized in that: The vehicle body (12) is provided with a water tank (9), the water outlet of the water tank (9) is connected to a high-pressure water pump, the water outlet of the high-pressure water pump is connected to a high-pressure water pipe (7), the water outlet of the high-pressure water pipe (7) is located above the feed trough (6), and the water outlet of the high-pressure water pipe (7) is placed on the outer end surface of the wheel (1) and close to the bottom of the mud collecting trough (2).

5. The device for making mud by taking soil on site according to claim 4, characterized in that: The water outlet of the water tank (9) and the water inlet of the mixing drum (15) are connected via a water pipe.

6. The device for making mud by taking soil on site according to claim 1, characterized in that: The vehicle body (12) is provided with a lower drum groove (17) matching the outer dimensions of the mixing drum (15), a plurality of limiting grooves (18) are arranged in the lower drum groove (17) along the circumferential direction, and a limiting ring is fixedly provided on the outer wall of the mixing drum (15), and the limiting ring is slidably connected to the limiting groove (18).

7. A forest fire fighting vehicle, using the device for making mud by taking soil on site as claimed in any one of claims 1 to 6, characterized in that: The vehicle also comprises a vehicle shell (13), wherein the bottom of the vehicle shell (13) is provided with a drum groove matching the outer dimensions of the mixing drum (15), and the vehicle shell (13) is buckled onto the mixing drum (15) and fixedly connected to the vehicle body (12); and the top of the vehicle shell (13) is provided with a high-pressure injection device, and the feed port of the high-pressure injection device is connected to the discharge port of the mixing drum (15).

8. The forest fire fighting vehicle according to claim 7, characterized in that: The spraying device comprises a turntable (14) that can rotate 360 ​​degrees, a spraying pipe (10) and a pneumatic telescopic rod (11); the turntable (14) is rotatably connected to the vehicle shell (13); the bottom of the spraying pipe (10) is hinged to the turntable (14); and the two ends of the pneumatic telescopic rod (11) are respectively hinged to the spraying pipe (10) and the turntable (14); and the feed port of the high-pressure spraying device is arranged in the spraying pipe (10).

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