WO2021112326A1

WO2021112326A1 - Simple fire engine

Info

Publication number: WO2021112326A1
Application number: PCT/KR2020/000007
Authority: WO
Inventors: 노성왕
Original assignee: 주식회사 제이엠모터스펌프
Priority date: 2019-12-03
Filing date: 2020-01-02
Publication date: 2021-06-10

Abstract

The present invention relates to a simple fire engine which can quickly extinguish a fire by automatically detecting the position of a fire in a fire scene and automatically spraying water on the position of the fire. The fire engine comprises: a pump engine provided on top of a frame; a pump provided on the front of the top of the frame, so as to be connected to the pump engine, and having a water supply connection pipe which can be connected to a water supply hose; and a handle part provided on the rear of the frame. The fire engine comprises: a water discharge tube which is connected to a discharge side of the pump and has on the discharge side a direction switch control valve for opening water in one or more directions; an automatic water spraying means which is provided on the front of the frame, is connected to the direction switch control valve by means of a hose, and comprises an automatic water cannon allowing automatic adjustment such that water can be sprayed in all directions; a thermal imaging camera, which is provided on the front of the frame, and a heat-detection distance sensor which senses the distance between the position of a fire and the fire engine by detecting the heat; and an operation controlling means which is provided on the handle part, is connected to the direction switch control valve, thermal imaging camera and heat-detection distance sensor and has an automatic spray switch so as to, when the automatic spray switch is turned ON, analyze image data input in real time from the thermal imaging camera and heat-detection distance data input in real time from the heat-detection distance sensor, adjust the spray direction of the automatic water cannon by means of controlling the automatic water spraying means, and automatically spray water on the position of the fire.

Description

simple fire engine

The present invention relates to a simple fire engine, and more particularly, to a simple fire engine capable of quickly extinguishing a fire by automatically detecting a fire point at a fire site and automatically spraying water to the fire point.

In general, when a fire occurs, the damage can be greatly reduced if you respond quickly and extinguish the fire early. This is especially true in places where huge damage occurs in the event of a fire, such as in a mountain or yard.

In the case of such a mountain or yard, it is not easy to extinguish the initial fire because it is a vulnerable place that is not equipped with firefighting facilities.

In particular, in the case of a forest fire that occurs during the dry season, a large number of manpower is mobilized to prevent and extinguish the fire and the firefighting system is in operation. However, since only a manual spray type fire extinguisher is used to clean up the rear fire, effective forest fire extinguishing cannot be continued.

Therefore, in recent years, a simple fire engine capable of extinguishing a fire by quickly moving to a mountain, a yard, or a fire site having a narrow road, etc., where it is difficult for vehicles such as a large fire truck to enter a mountain or a yard, has been widely used.

Accordingly, first, as an example of a conventional simple fire engine, a "simple fire engine with ease of movement" (hereinafter referred to as a "conventional simple fire engine") of Korean Patent Registration No. 1318409 is known.

A conventional simple fire engine is provided with a fuel tank integrally and is connected to an engine that generates power and operates the pump. The plate member is installed on the upper part of the plate member, which is driven by receiving power from the motor that operates by receiving power from the battery. A brake means for controlling the rotation of the transfer wheel is installed, and it is configured to include a frame member provided with a handle for steering the direction of the transfer wheel.

However, the conventional simple fire engine configured as described above has a problem in that it is difficult to extinguish the fire by extinguishing the fire only through the water spray hose connected to the pump after arriving at the fire site.

Accordingly, the present invention has been devised to solve the various problems of the prior art,

An object of the present invention is to provide a simple fire engine capable of automatically detecting a fire point at a fire site and automatically spraying water to a fire point.

Another object of the present invention is to provide a simple fire engine capable of extinguishing a fire more quickly through the manual water cannon by manipulating the manual water cannon.

Another object of the present invention is to provide a simple fire engine capable of extinguishing a fire more quickly through the manual foam spray gun by operating the manual foam spray gun.

Another object of the present invention is to provide a simple fire engine capable of extinguishing residual fires on the ground while the fire engine moves through the water injection of the lower injection nozzles.

A simple fire engine according to the present invention for achieving the above object includes a frame having a plurality of wheels in the lower part, a pump engine provided in the upper part of the frame, and a pump engine connected to the upper front of the frame and supplying water A simple fire engine comprising a pump having a water supply connector to which a hose is connectable, and a handle provided to protrude upwardly at the rear of a frame, wherein the pump is connected to a discharge side of the pump and water is opened to the discharge side in one or more directions a water discharge pipe provided with a direction switching control valve; an automatic water spraying means provided in front of the frame, connected to the direction switching control valve by a hose, and including an automatic water spray gun whose spraying direction is automatically adjusted in all directions; a thermal imaging camera provided in front of the frame and a thermal sensing distance sensor for sensing a distance between a fire engine and a fire point by detecting heat; It is provided in the handle part, and is connected to the direction switching control valve, the thermal imaging camera, and the thermal sensing distance sensor, and is provided with an automatic radiation switch to input in real time from the thermal imaging camera when the automatic radiation switch is turned on. An operation control for automatically spraying water to a fire point by controlling the automatic water spraying means by analyzing the image data and the heat detection distance data input in real time from the heat detection distance sensor to adjust the spraying direction of the automatic water spray gun means; characterized in that it includes.

In addition, the simple fire engine according to the present invention further comprises a manual water spray means including a manual water spray gun provided in front of the frame, connected to the direction switching control valve by a hose, and the spray direction of water is manually adjusted in all directions, The operation control means further includes a water-spinning joystick connected to the manual water-spraying means, and is configured to operate the manual water-spinning cannon and the water-spraying direction in all directions through manual operation of the water-spinning joystick.

In addition, the "simple fire engine" according to the present invention is a foam tank equipped with a foam supply hose which is filled with fire extinguishing foam provided on the upper portion of the frame and has an on/off control valve connected to the operation control means in the middle on the discharge side. And, it is provided in front of the frame, the foam supply hose is connected, and further comprising a manual foam spraying means comprising a manual foam sprayer in which the spraying direction of the foam is manually adjusted in all directions, the operation control means is the manual foam spraying It further comprises a foam spinning joystick connected to the means, characterized in that it is configured to operate the operation of the manual foam spinning gun and the foam spraying direction in all directions through manual operation of the foam spinning joystick.

In addition, the "simple fire engine" according to the present invention further includes a plurality of lower injection nozzles connected to the direction switching control valve and a hose and provided to spray water downward around the lower front and both sides of the frame, and the The operation control means further includes a lower injection nozzle switch connected to the direction switching control valve, and water is sprayed from the lower injection nozzles when the lower injection nozzle switch is turned on.

The present invention configured as described above has an effect of providing a simple fire engine capable of quickly extinguishing a fire by automatically detecting a fire point at a fire site and automatically spraying water to the fire point.

In addition, the present invention has an effect that can extinguish a fire more quickly through a manual water spray gun by manipulating a manual water spray gun, and an effect that can improve fire extinguishing efficiency by using an automatic water spray gun and a manual water spray gun together there is also

In addition, the present invention has an effect that can extinguish a fire more quickly through a manual foam radiator by manipulating a manual foam radiator, and fires using all or two or more of an automatic water radiator, a manual water radiator, and a manual foam radiator There is also the effect of improving the evolution efficiency of

In addition, the present invention has the effect of providing a simple fire engine that does not need to extinguish the residual fire separately by extinguishing the residual fire on the ground while the fire engine moves through the water injection of the lower injection nozzles.

1 is a side view showing a simple fire engine according to the present invention.

2 is a front view showing a simple fire engine according to the present invention.

3 is a control configuration diagram showing a control configuration of a simple fire engine according to the present invention.

Figure 4 is a schematic front view showing a state in which the circulation pipe constituting the present invention is further provided.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings. However, it should be understood that the present invention may be embodied in many different forms and is not limited to the described embodiments.

1 is a side view showing a simple fire engine according to the present invention, FIG. 2 is a front view showing a simple fire engine according to the present invention, FIG. 3 is a control diagram showing a control configuration of a simple fire engine according to the present invention, and FIG. 4 is It is a schematic front view showing a state in which the circulation pipe constituting the present invention is further provided.

As shown in the drawing, the simple fire engine 1 according to the present invention quickly moves to a mountain, a yard, a fire site with a narrow road, etc., where it is difficult for a large fire engine to enter a vehicle, and quickly extinguishes a fire through automatic water injection. As can be done, the frame 11 provided with a plurality of wheels 111 moved by the motor at the lower portion, the pump engine 12 provided at the upper rear of the frame 11, and the frame 11 A pump 13 provided at the front of the upper part and connected to the pump engine 12 and provided with a water supply connection pipe 131 to which a water supply hose 10 can be connected on the inlet side, and a pump case surrounding the pump 13 ( C) and a handle portion 16 for direction adjustment provided to protrude upwardly at the rear of the frame 11 .

And the simple fire engine (1) according to the present invention includes a water discharge pipe (14), an automatic water injection means (2), a thermal imaging camera (3), a heat sensing distance sensor (4), and an operation control means (9).

The water discharge pipe 14 is connected to the discharge side of the pump 13 and serves to discharge compressed high-pressure water. And on the discharge side of the water discharge pipe 14, a direction switching control valve 15 for opening water in at least one direction is provided. As this direction switching control valve 15 is known in various forms, its specific configuration and A description of the operation is omitted.

The automatic water spraying means (2) is provided in front of the frame (11) and connected to the direction switching control valve (15) by a hose (H), and the automatic water spraying gun ( 21) is included.

The automatic water spraying means 2 includes an automatic water sprayer 21 connected to the hose H, and the angle of the automatic water sprayer 21 is controlled in all directions by the control of the operation control means 9 to be described later. Includes an automatic angle changing means 22 to change to. And the automatic angle changing means 22 is a plurality of motors (not shown) or a plurality of cylinders (not shown) each operated by the control of an operation control means 9 to be described later, and the automatic water spray gun 21 . It can be composed of an angle changing power transmission means (not shown) that is connected between the rear and the motors or cylinders to change the angle of the automatic water spray gun 21 in all directions, which changes the angle of the automatic water spray gun 21 Since the automatic angle changing means 22 is already known in various forms, a description of its specific configuration and operation will be omitted.

The thermal imaging camera 3 is provided in front of the frame 11 and is already known to photograph the fire scene to photograph the heat distribution. In addition, the heat sensing distance sensor 4 is also provided in front of the frame 11 and is already known to sense the distance between the heat generating point and the fire engine where heat is generated by detecting the surrounding heat.

The operation control means 9 is provided in the handle portion 16 to facilitate operation. And the operation control means (9) is connected to the direction switching control valve (15), the thermal imaging camera (3), the thermal sensing distance sensor (4), is provided with an automatic radiation switch (not shown) is provided with an automatic radiation switch In the ON state, the automatic water spraying means (2) analyzes the thermal image data input in real time from the thermal imaging camera (3) and the thermal image data input in real time from the thermal sensing distance sensor (4). ) to adjust the spray direction of the automatic water spray gun 21 to automatically spray water to the fire point.

That is, when the automatic radiation switch of the operation control means 9 is turned on, the thermal imaging camera 3 captures the fire scene in real time and the thermal imaging camera 3 captures the heat of the fire scene in real time. The image capture data is inputted to the operation control means 9 in real time, and the heat detection distance sensor 4 is operated to input the distance between the fire engine and the point where the fire occurred to the operation control means 9 in real time.

And in the process of analyzing the thermal image data input in real time from the thermal imaging camera 3 and the thermal image data input in real time from the thermal distance sensor 4 by the operation control means 9, the thermal image It is most desirable to analyze the fire point by detecting the location of the highest heat in the data and the heat detection distance data.

In addition, a progress light (not shown) that can be used at night may be further installed on the pump engine 12 or the pump case C of the simple fire engine.

Hereinafter, a state in which the simple fire engine according to the present invention is used to extinguish a fire at a fire site will be described as follows.

1 to 3 , when extinguishing a fire through the simple fire engine 1 according to the present invention, first, the simple fire engine 1 is positioned close to the fire site.

Then, when the automatic radiation switch of the operation control means 9 is turned on, the thermal imaging camera 3 captures the fire scene in real time, and the thermal imaging data of the fire scene is recorded in real time by the operation control means 9 ), and the heat sensing distance sensor 4 is operated, and the distance between the point where the fire occurred and the fire engine is input to the operation control means 9 in real time.

Next, the operation control means 9 analyzes the thermal image data input in real time from the thermal imaging camera 3 and the thermal image data input in real time from the thermal distance sensor 4 to analyze the automatic water spraying means ( 2) to extinguish the fire at the fire site through the process of automatically spraying water to the fire point by controlling the spray direction of the automatic water spray gun 21 in real time.

Therefore, the simple fire engine 1 according to the present invention automatically detects the fire point at the fire site and automatically sprays water through the automatic water spray gun 21 at the fire point to quickly extinguish the fire. It is an invention.

In addition, as shown in Figs. 2 and 3, the simple fire engine 1 according to the present invention is provided in the direction switching control valve 15 and has a water injection operation valve 181 that is operated and opened by a firefighter. The hose 18 may further include a water discharge pipe 151 to which the hose 18 is detachably connected, and may further include a circulation pipe 19 connected between the water supply connection pipe 131 and the water discharge pipe 151 . .

And the simple fire engine (1) according to the present invention is provided in the circulation pipe (19), the pump (13) is operated and the water injection control valve (181) is closed by the fireman's operation, the circulation pipe (19) When the pressure of the water applied therein becomes more than the set pressure, it may further include an automatic opening/closing pressure valve 191 for automatically opening the circulation pipe 19 so that water is circulated in the circulation pipe 19 and the pump 13, Alternatively, as provided in the circulation pipe 19, the pump 13 is operated and water is circulated in the circulation pipe 19 and the pump 13 in a state in which the water injection operation valve 181 is closed by the operation of the firefighter. It may further include a manually operated on/off valve (not shown) for manually opening the tube 19 by a firefighter.

In addition, the operation control means 9 further includes a spray hose switch (not shown) connected to the direction switching control valve 15, and the water from the spray hose 18 in the state that the spray hose switch is on (ON) It may be configured to be sprayed.

Accordingly, the firefighter connects the injection hose 18 to the direction switching control valve 15 as needed, then turns on the injection hose switch to supply water to the injection hose 18, thereby supplying water to the injection hose 18. ), or the automatic water spray gun 21 and the spray hose 18 can be used together.

Therefore, the present invention makes it possible to use the spray hose 18 together with the automatic water spray gun 21 as needed, so that a large fire can be extinguished with an automatic water spray gun 21 and a firefighter using the spray hose 18 can also use a small fire together. There is also the advantage of being able to evolve.

On the other hand, when the firefighter closes the water injection operation valve 181 while extinguishing the fire using the injection hose 18 and the pressure inside the circulation pipe 19 becomes higher than the set pressure, the circulation pipe 19 As the provided automatic opening/closing pressure valve 191 is opened and the water discharged from the pump 13 passes through the circulation pipe 19 and circulates back to the pump 13, the instantaneous load of the pump 13 is reduced. There is also an advantage that can prevent damage to the pump 13 in advance.

In addition, while extinguishing a fire using the injection hose 18, when the firefighter closes the water injection operation valve 181 and the pressure inside the circulation pipe 19 is higher than the set pressure, the firefighter closes the circulation pipe 19 As the water discharged from the pump 13 passes through the circulation pipe 19 and circulates back to the pump 13 by manually opening the manually operated on/off valve provided in the pump 13, the instantaneous load of the pump 13 is reduced. It also has the advantage of being able to prevent damage to the pump in advance.

In addition, as shown in FIGS. 1 and 3, the simple fire engine 1 according to the present invention further includes a monitor M provided on the pump engine 12 and connected to the operation control means 9. may include

And the operation control means 9 further comprises a monitor switch (not shown) for controlling the monitor (M), the monitor switch is on (ON) state that is input in real time from the thermal imaging camera (3) It may be configured to display the thermal image data on a monitor in real time.

In addition, the simple fire engine 1 is provided in front of the frame 11 and connected to the direction switching control valve 15 by a hose (H), and a manual water spray gun 51 in which the spray direction of water is manually adjusted in all directions. It may further include a manual water spraying means (5) including.

And the operation control means 9 further includes a water radiation joystick (not shown) connected to the manual water spraying means 5, and through the manual operation of the water radiation joystick, the operation of the manual water spray gun 51 and the water It may be configured to operate the injection direction in all directions.

The manual water spraying means (5) includes a manual water sprayer 51 connected to the hose (H), and the angle of the manual water sprayer (51) is controlled by the manipulation of the water spraying joystick of the control means (9). and manual angle changing means 52 for changing in all directions by control. And the manual angle changing means 52 is a plurality of motors (not shown) or a plurality of cylinders (not shown) each operated by the operation control of the operation control means 9, and the manual water spray gun 51 It can be composed of an angle changing power transmission means (not shown) that is connected between the rear and the motors or cylinders to change the angle of the manual water spray gun 51 in all directions, which changes the angle of the manual water spray gun 51 As the manual angle changing means 52 is already known in various forms, a description of its specific configuration and operation will be omitted.

Therefore, the present invention also has an advantage in that the fire can be extinguished more quickly through the manual water spray gun by manipulating the spray angle of the manual water spray gun through the manual operation control of the water radiation joystick provided in the operation control means 9 . And the present invention also has the advantage that firefighters can selectively use the automatic water cannon 21 and the manual water cannon 51 together to improve the fire extinguishing efficiency.

In addition, the present invention also has the advantage that the fire can be extinguished more quickly by adjusting the spray angle of the manual water spray gun 51 while watching the fire site with the monitor (M).

In addition, in the simple fire engine 1 according to the present invention, as shown in FIGS. 1 to 3 , the fire extinguishing foam provided in the upper portion of the frame 11 is filled, and the operation control means 9 is in the middle on the discharge side. ) may further include a foam tank 6 provided with a foam supply hose 61 provided with an on/off control valve 611 connected to, and provided in front of the frame 11 and provided with the foam supply hose 61 ) is connected and may further include a manual foam spraying means 7 including a manual foam spinning cloth 71 in which the spraying direction of the foam is manually adjusted in all directions.

And the operation control means (9) further includes a foam spinning joystick (not shown) connected to the manual foam spraying means (7), and through the manual operation of the foam spinning joystick (95) the manual foam spinning gun (71) It can be configured to manipulate the actuation and foam spraying direction in all directions.

The manual foam spraying means 7 includes a manual foam spinning cloth 71 connected to the foam supply hose 61, and adjusting the angle of the manual foam spinning gun 71 to the foam spinning joystick of the operation control means 9 Manual angle changing means 72 for changing in all directions by the operation control of the. And the manual angle changing means 72 is a plurality of motors (not shown) or a plurality of cylinders (not shown) each operated by the operation control of the operation control means 9, and the manual foam spinning gun 71 It can be composed of an angle change power transmission means (not shown) that is connected between the rear and the motors or cylinders to change the angle of the manual foam spray gun 71 in all directions, which changes the angle of the manual foam spray gun 71 As the manual angle changing means 72 is already known in various forms, a description of its specific configuration and operation will be omitted.

Therefore, in the present invention, through the manual operation control of the foam radiation joystick provided in the operation control means 9, the fire can be extinguished more quickly through the manual foam spray gun 71 by manipulating the spray angle of the manual foam spray gun 71. There are also possible advantages. And the present invention also has the advantage of improving the fire extinguishing efficiency by using all or two or more of the automatic water spray gun 21, the manual water spray gun 51, and the manual foam spray gun 71.

In addition, the present invention also has the advantage that the fire can be extinguished more quickly by adjusting the angle of the manual foam spinneret 71 while watching the fire scene with the monitor (M).

In addition, as shown in FIGS. 1 to 3, the simple fire engine 1 according to the present invention is connected to the direction switching control valve 15 and the hose H, and is connected to the lower front and both sides of the frame 11. It may further include a plurality of lower injection nozzles (8) provided to spray water to the lower periphery.

And the operation control means (9) further includes a lower injection nozzle switch (not shown) connected to the direction switching control valve (15), and the lower injection nozzle (8) in a state in which the lower injection nozzle switch is turned on (ON). ) may be configured to be sprayed from the water.

Therefore, the present invention turns on the injection nozzle switch provided in the operation control means 9 to spray water from the lower injection nozzles 8, and as the fire engine moves, the residual fire on the ground also extinguishes, thereby extinguishing the residual fire separately. There is also the advantage of providing a simple fire engine that does not need to be extinguished.

In addition, as shown in FIG. 1, the simple fire engine 1 according to the present invention is provided at the rear lower portion of the frame 11 to be spaced apart from the ground, and a foldable footrest 17 provided so that a user can get on it. may further include.

In addition, it is preferable that the footrest 17 is rotated and folded around the lower hinge when the firefighter does not board, and is horizontally spread out around the lower hinge when the fireman boards.

Therefore, the present invention has the advantage of enabling the firefighter to move more quickly to the fire site and to enable the initial extinguishing of the fire by installing the footrest 17 at the rear of the frame 11 so that the firefighter can move quickly in the fire engine. .

Although preferred embodiments of the present invention have been described above, various changes, modifications and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiments. Accordingly, the above description is not intended to limit the scope of the invention defined by the limits of the following claims.

On the other hand, although specific embodiments have been described in the detailed description of the present invention, it will be apparent to those of ordinary skill in the art that various modifications are possible without departing from the scope of the present invention.

[Explanation of code]

1: Simple fire engine

11: frame

12 : pump engine

13 : pump

14: discharge pipe

15: directional control valve

16: handle part

17 : scaffold

18: spray hose

19: circulation tube

C: Pump case

2: automatic water injection means

21 : automatic water cannon

22: automatic angle change means

3: Thermal imaging camera

4: heat sensing distance sensor

5: Manual water spraying means

51 : manual water cannon

52: manual angle change means

6: Foam Tank

61: foam supply hose

611: open/close control valve

7: Manual foam injection means

71: Manual foam multiple guns

72: manual angle change means

8: lower injection nozzle

9: operation control means

10: water supply hose

H: hose

M: monitor

Claims

A frame having a plurality of wheels in the lower portion, a pump engine provided in the upper portion of the frame, a pump provided to be connected to the pump engine in front of the upper portion of the frame and provided with a water supply connection pipe to which a water supply hose is connectable; In a simple fire engine including a handle part provided to protrude upwardly at the rear of the

a water discharge pipe connected to the discharge side of the pump and provided with a direction switching control valve for opening water in one or more directions at the discharge side;

an automatic water spraying means provided in front of the frame, connected to the direction switching control valve by a hose, and including an automatic water spray gun whose spraying direction is automatically adjusted in all directions;

a thermal imaging camera provided in front of the frame and a thermal sensing distance sensor for sensing a distance between a fire engine and a fire point by detecting heat;

It is provided in the handle part, and is connected to the direction switching control valve, the thermal imaging camera, and the thermal sensing distance sensor, and is provided with an automatic radiation switch to input in real time from the thermal imaging camera when the automatic radiation switch is turned on. An operation control for automatically spraying water to a fire point by controlling the automatic water spraying means by analyzing the image data and the heat detection distance data input in real time from the heat detection distance sensor to adjust the spraying direction of the automatic water spray gun means; a simple fire engine comprising a.
According to claim 1,

The simple fire engine

a water discharge pipe provided in the direction switching control valve and detachably connected to an injection hose provided with a water injection operation valve that is operated and opened by a firefighter;

a circulation pipe connected between the water supply connection pipe and the water discharge pipe;

An automatic opening/closing pressure that is provided in the circulation pipe and automatically opens the circulation pipe so that water is circulated in the circulation pipe and the pump when the pressure of water applied in the circulation pipe exceeds the set pressure when the pump is operated and the water injection operation valve is closed The valve or the pump is operated and the water injection operation valve is closed, the circulation pipe and the pump further include a manually operated on/off valve for manually opening the circulation pipe to circulate water from the pump,

The operation control means is

A simple fire engine, characterized in that it further includes a spray hose switch connected to the direction switching control valve, and is configured to spray water from the spray hose when the spray hose switch is turned on.
According to claim 1,

The simple fire engine

Further comprising a monitor provided on the pump engine and connected to the operation control means,

The operation control means is

The simple fire engine further comprising a monitor switch for controlling the monitor, wherein the thermal image data input from the thermal imaging camera in real time is displayed on the monitor in real time when the monitor switch is turned on.
4. The method according to any one of claims 1 to 3,

The simple fire engine

Further comprising a manual water spraying means provided in front of the frame, connected to the direction switching control valve by a hose, and including a manual water sprayer in which the spraying direction of water is manually adjusted in all directions,

The operation control means is

A simple fire engine, characterized in that it further comprises a water radiation joystick connected to the manual water spray means, and is configured to operate the manual water spray gun and the water spray direction in all directions through manual operation of the water spray joystick.
4. The method according to any one of claims 1 to 3,

The simple fire engine

A foam tank equipped with a foam supply hose that is filled with fire extinguishing foam provided on the upper portion of the frame and has an on/off control valve connected to the operation control means in the middle on the discharge side;

It is provided in front of the frame, the foam supply hose is connected, and further comprising a manual foam spraying means including a manual foam spinning gun in which the spraying direction of the foam is manually adjusted in all directions,

The operation control means is

A simple fire engine, characterized in that it further comprises a foam radiation joystick connected to the manual foam spraying means, and is configured to operate the operation of the manual foam sprayer and the foam spraying direction in all directions through manual operation of the foam radiation joystick.
4. The method according to any one of claims 1 to 3,

The simple fire engine

Further comprising a plurality of lower injection nozzles connected to the direction switching control valve and the hose and provided to spray water to the lower portion around the lower front and both sides of the frame,

The operation control means is

A simple fire engine, characterized in that it further comprises a lower injection nozzle switch connected to the direction switching control valve, and is configured to spray water from the lower injection nozzles when the lower injection nozzle switch is turned on.
4. The method according to any one of claims 1 to 3,

The simple fire engine

Simple fire engine, characterized in that it further comprises a foldable footrest provided to be spaced apart from the ground in the lower rear of the frame so that the user can get on.