fire engine

Abstract

The present disclosure provides a fire truck, which comprises a vehicle body and an arm assembly; the arm assembly comprises a base, a first arm and a second arm, the base is arranged on the vehicle body, the first end of the first arm is connected to the base, and the second end of the first arm is connected to the second arm; the first arm is provided with a secondary cannon assembly, the secondary cannon assembly comprises a secondary cannon and a secondary cannon water pipe connected to the secondary cannon, and the secondary cannon is located on the left side or the right side of the second end; the secondary cannon is arranged on the first arm through an avoiding structure, and the avoiding structure can arrange the secondary cannon and the second end to be spaced apart in space. Through the above structural design, the present disclosure realizes the spaced arrangement of the secondary cannon and the first arm through the avoiding structure, so that the secondary cannon and the second end of the first arm are spaced apart in space, the swing range of the secondary cannon towards the first arm is prevented from being affected by the interference of the first arm, and the water hitting effect of the secondary cannon is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of fire-fighting equipment technology, and in particular to a fire truck. Background Technology

[0002] In one existing design of a fire truck, the boom employs a two-section structure. The secondary water cannon is mounted on the first section of the boom, and to control the overall length of the vehicle, it is positioned flush with the front end of the first boom section. However, this existing design suffers from interference between the boom and the secondary water cannon during swinging, which limits the swing amplitude of the secondary water cannon when it swings towards the boom, thus affecting its water-spraying efficiency. Summary of the Invention

[0003] A primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art described above, and to provide a fire truck that avoids limiting the swing amplitude of the secondary cannon while controlling the overall vehicle length.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] According to one aspect of this disclosure, a fire truck is provided, including a vehicle body and a boom assembly; the boom assembly includes a base, a first boom, and a second boom, the base being disposed on the vehicle body, a first end of the first boom being connected to the base, and a second end of the first boom being connected to the second boom; wherein the first boom is provided with a secondary fire monitor assembly, the secondary fire monitor assembly including a secondary fire monitor and a secondary fire monitor hose connected to the secondary fire monitor, the secondary fire monitor being located to the left or right of the second end; wherein the secondary fire monitor is disposed on the first boom via a clearance structure, the clearance structure enabling the secondary fire monitor and the second end to be spatially spaced apart.

[0006] According to one embodiment of this disclosure, the avoidance structure includes a telescopic drive mechanism that can drive the secondary gun to move along a first direction to adjust the secondary gun between a first position and a second position, wherein the first direction is the extension direction of the first boom; when the secondary gun is in the first position, the secondary gun is flush with or located behind the second end; when the secondary gun is in the second position, the secondary gun extends forward beyond the second end so that the secondary gun and the second end are spaced apart in the first direction.

[0007] According to one embodiment of this disclosure, along the first direction, the telescopic drive mechanism drives the secondary gun to move a distance greater than or equal to the length of the secondary gun.

[0008] According to one embodiment of this disclosure, the telescopic drive mechanism is a hydraulic cylinder or an electric push rod.

[0009] According to one embodiment of this disclosure, the secondary gun water pipe includes a main section and a telescopic section; the main section is connected to the first boom; the telescopic section connects the main section and the secondary gun, and the telescopic section is a telescopic pipe structure.

[0010] According to one embodiment of this disclosure, the secondary gun water pipe includes a main section and a curved section; the main section is connected to the first boom and is a straight pipe structure; the curved section connects the main section and the secondary gun, and the curved section is a bent pipe structure; in the horizontal direction, the end of the curved section connected to the secondary gun is farther away from the first boom than the end connected to the main section, so that the secondary gun and the second end are spaced apart in the horizontal direction, and the curved section is the avoidance structure.

[0011] According to one embodiment of this disclosure, wherein: the main body segment is connected to the first boom via a first fixing structure, the first fixing structure including a first clamp and a first connecting rib; the first clamp is disposed on the main body segment, and the first connecting rib connects the first clamp and the first boom; and / or, the curved segment is connected to the first boom via a second fixing structure, the second fixing structure including a second clamp and a second connecting rib; the second clamp is disposed on the curved segment, and the second connecting rib connects the second clamp and the first boom.

[0012] According to one embodiment of this disclosure, the fire truck further includes a main gun assembly, which includes a main gun and a main gun water pipe connected to the main gun. The main gun is located at the end of the second boom away from the first boom. The main gun water pipe includes a first section disposed on the first boom and a second section disposed on the second boom. The auxiliary gun water pipe and the first section are respectively located on different sides of the first boom.

[0013] According to one embodiment of this disclosure, the distance between the secondary gun and the first boom is 400mm to 650mm in the horizontal direction.

[0014] According to one embodiment of this disclosure, the fire truck further includes a main gun assembly, which includes a main gun and a main gun water pipe connected to the main gun. The main gun is located at the end of the second boom away from the first boom. The main gun water pipe includes a first section disposed on the first boom and a second section disposed on the second boom. The auxiliary gun water pipe is located on the left or right side of the first boom together with the first section, and the auxiliary gun and the first section are arranged at a distance in the horizontal direction.

[0015] According to one embodiment of this disclosure, the distance between the secondary gun and the first segment in the horizontal direction is 400mm to 650mm.

[0016] As can be seen from the above technical solution, the advantages and positive effects of the fire truck proposed in this disclosure are as follows:

[0017] The fire truck disclosed herein includes a vehicle body and a boom assembly. The boom assembly includes a base, a first boom, and a second boom. The base is disposed on the vehicle body, a first end of the first boom is connected to the base, and a second end of the first boom is connected to the second boom. The first boom is equipped with a secondary fire monitor assembly, which includes a secondary fire monitor and a secondary fire monitor hose connected to the secondary fire monitor. The secondary fire monitor is located to the left or right of the second end. The secondary fire monitor is mounted on the first boom via a clearance structure, which allows the secondary fire monitor and the second end to be spatially spaced apart. Through the above structural design, this disclosure utilizes a clearance structure to achieve a spaced arrangement between the secondary fire monitor and the first boom, thus spatially separating the secondary fire monitor from the second end of the first boom. This avoids interference from the first boom affecting the swing amplitude of the secondary fire monitor towards the first boom, ensuring the water-spraying effect of the secondary fire monitor. Attached Figure Description

[0018] The various objectives, features, and advantages of this disclosure will become more apparent from the following detailed description of preferred embodiments of the disclosure taken in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0019] Figure 1 This is a structural schematic diagram of a fire truck boom assembly according to an exemplary embodiment;

[0020] Figure 2 yes Figure 1 Top view;

[0021] Figure 3 yes Figure 2 A partially enlarged view of the boom assembly in its deployed state;

[0022] Figure 4 and Figure 5 These are schematic diagrams of the boom assembly of a fire truck from two different perspectives, according to another exemplary embodiment.

[0023] Figure 6 This is a partial enlarged view of the boom assembly of a fire truck according to yet another exemplary embodiment.

[0024] The annotations in the attached figures are explained as follows:

[0025] 110. Base;

[0026] 120. First boom;

[0027] 121. First end;

[0028] 122. Second end;

[0029] 130. Second boom;

[0030] 210. Secondary gun;

[0031] 220. Secondary gun water pipe;

[0032] 221. Main body paragraph;

[0033] 222. Expansion section;

[0034] 223. Curved section;

[0035] 230. Telescopic drive mechanism;

[0036] 241. First clamp;

[0037] 242. First connecting bar;

[0038] 251. Second clamp;

[0039] 252. Second connecting bar;

[0040] 310. Main gun;

[0041] 321. First paragraph;

[0042] 322. Second paragraph;

[0043] L1. Spacing;

[0044] L2. Spacing. Detailed Implementation

[0045] Typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can have various variations in different embodiments without departing from the scope of this disclosure, and the descriptions and drawings therein are illustrative in nature and not intended to limit this disclosure.

[0046] In the following description of various exemplary embodiments of this disclosure, reference is made to the accompanying drawings, which form part of this disclosure, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this disclosure. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this disclosure. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this disclosure, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this disclosure.

[0047] See Figure 1 This illustration represents a structural schematic diagram of the boom assembly of the fire truck proposed in this disclosure. In this exemplary embodiment, the fire truck proposed in this disclosure is described using an aerial ladder truck as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of this disclosure to other types of fire trucks, and these changes shall still be within the scope of the principles of the fire truck proposed in this disclosure.

[0048] like Figure 1 As shown, in one embodiment of this disclosure, the fire truck includes a vehicle body and a boom assembly. The boom assembly includes a base 110, a first boom 120, and a second boom 130. The base 110 is disposed on the vehicle body, a first end of the first boom 120 is connected to the base 110, and a second end of the first boom 120 is connected to the second boom 130. (See also...) Figure 2 and Figure 3 , Figure 2 China representatively shows Figure 1 Top view; Figure 3 The accompanying drawing shows a partially enlarged view of the boom assembly in its deployed state. The structure, connection methods, and functional relationships of the main components of the fire truck proposed in this disclosure will be described in detail below, in conjunction with the aforementioned drawings.

[0049] like Figures 1 to 3 As shown, in one embodiment of this disclosure, the first boom 120 is equipped with a secondary gun assembly, which includes a secondary gun 210 and a secondary gun water pipe 220 connected to the secondary gun 210. The secondary gun 210 is located on the left or right side of the second end. Based on this, the secondary gun 210 is mounted on the first boom 120 via a clearance structure, which allows the secondary gun 210 and the second end to be spatially spaced apart. Through the above structural design, this disclosure utilizes a clearance structure to achieve a spaced arrangement between the secondary gun 210 and the first boom 120, ensuring that the secondary gun 210 and the second end of the first boom 120 are spatially separated, avoiding interference from the first boom 120 that would affect the swing amplitude of the secondary gun 210 towards the first boom 120, and guaranteeing the water-spraying effect of the secondary gun 210.

[0050] like Figure 3As shown, in one embodiment of this disclosure, the avoidance structure may include a telescopic drive mechanism 230, which can drive the secondary gun 210 to move along a first direction, so that the secondary gun 210 can be adjusted between a first position and a second position. The first direction is the extension direction of the first boom 120, such as direction D1 shown in the figure. When the secondary gun 210 is in the first position, the secondary gun 210 is flush with the second end or located behind the second end. When the secondary gun 210 is in the second position, the secondary gun 210 extends forward from the second end, so that the secondary gun 210 and the second end are spaced apart in the first direction. Through the above structural design, this disclosure uses the telescopic drive mechanism 230 as an avoidance structure, that is, to realize a driveable and adjustable avoidance scheme. After the secondary gun 210 is retracted (i.e., moved to the first position), it does not affect the overall length of the vehicle. When the secondary gun 210 needs to swing and spray water, the telescopic drive mechanism 230 can be used to extend the secondary gun 210, so that its swinging and spraying action will not be affected by the interference of the first boom 120.

[0051] Based on the structural design of the avoidance structure including the telescopic drive mechanism 230, in one embodiment of this disclosure, the telescopic drive mechanism 230 drives the secondary gun 210 to move a distance greater than or equal to the length of the secondary gun 210 along the first direction. For example, if the length of the secondary gun 210 is 800mm, then the telescopic drive mechanism 230 drives the secondary gun 210 to move a distance greater than or equal to 800mm. Through the above structural design, taking the secondary gun 210 being flush with the second end in the first position as an example, when the secondary gun 210 is in the second position, the secondary gun 210 extends fully beyond the second end along the first direction, thereby further avoiding interference from the first boom 120 on the swinging water-spraying action of the secondary gun 210.

[0052] Based on the structural design of the avoidance structure including the telescopic drive mechanism 230, in one embodiment of this disclosure, the telescopic drive mechanism 230 can be an electric push rod. In other embodiments of this disclosure, when the avoidance structure includes the telescopic drive mechanism 230, other drive components such as hydraulic cylinders can also be selected for the telescopic drive mechanism 230, and it is not limited to this embodiment.

[0053] like Figure 3As shown, based on the structural design of the avoidance structure including the telescopic drive mechanism 230, in one embodiment of this disclosure, the secondary gun water pipe 220 may include a main body section 221 and a telescopic section 222. The main body section 221 is connected to the first boom 120. The telescopic section 222 connects the main body section 221 and the secondary gun 210, and the telescopic section 222 is a telescopic pipe structure. Through the above structural design, the telescopic section 222 can realize the telescopic function of the secondary gun water pipe 220. Accordingly, during the telescopic drive mechanism 230 driving the secondary gun 210 to telescopic, the telescopic section 222 of the secondary gun water pipe 220 can telescopic accordingly, so that the length of the secondary gun water pipe 220 always matches the telescopic position of the secondary gun 210, reducing the bending of the secondary gun water pipe 220 and ensuring the reliability and service life of the secondary gun water pipe 220.

[0054] Reference Figure 4 and Figure 5 , Figure 4 and Figure 5 The diagrams show, from two different perspectives, a structural schematic of the boom assembly of a fire truck that embodies the principles of this disclosure in another exemplary embodiment.

[0055] like Figure 4 and Figure 5 As shown, in one embodiment of this disclosure, the secondary gun water pipe 220 may include a main body section 221 and a curved section 223. The main body section 221 connects to the first boom 120 and is a straight pipe structure. The curved section 223 connects the main body section 221 and the secondary gun 210 and is a bent pipe structure. Horizontally, the end of the curved section 223 connecting to the secondary gun 210 is further away from the first boom 120 than the end of the curved section 223 connecting to the main body section 221, so that the secondary gun 210 and the second end are spaced apart in the horizontal direction. Accordingly, the curved section 223 is the aforementioned clearance structure. Through the above structural design, this disclosure utilizes the curved section 223 as a clearance structure to achieve the spaced arrangement of the secondary gun 210 and the second boom 130, resulting in a simple structure, convenient arrangement, and low cost.

[0056] like Figure 5 As shown, based on the structural design of the curved section 223 of the secondary gun water pipe 220 as a clearance structure, in one embodiment of this disclosure, the main body section 221 of the secondary gun water pipe 220 can be connected to the first boom 120 via a first fixing structure. This first fixing structure includes a first clamp 241 and a first connecting rib 242. Specifically, the first clamp 241 is disposed on the main body section 221, and the first connecting rib 242 connects the first clamp 241 and the first boom 120. Through the above structural design, this disclosure can ensure a stable connection between the main body section 221 and the first boom 120.

[0057] like Figure 5As shown, based on the structural design of the curved section 223 of the secondary gun water pipe 220 as a clearance structure, in one embodiment of this disclosure, the curved section 223 of the secondary gun water pipe 220 can be connected to the first boom 120 via a second fixing structure. This second fixing structure includes a second clamp 251 and a second connecting rib 252. Specifically, the second clamp 251 is disposed on the curved section 223, and the second connecting rib 252 connects the second clamp 251 and the first boom 120. Through the above structural design, this disclosure can ensure a stable connection between the curved section 223 and the first boom 120.

[0058] like Figure 4 and 5 As shown, based on the structural design of the curved section 223 of the secondary cannon water pipe 220 as an avoidance structure, in one embodiment of this disclosure, the fire truck proposed in this disclosure may further include a main cannon assembly. The main cannon assembly includes a main cannon 310 and a main cannon water pipe connected to the main cannon 310. The main cannon 310 is located at the end of the second boom 130 away from the first boom 120. The main cannon water pipe includes a first section 321 disposed on the first boom 120 and a second section 322 disposed on the second boom 130. Based on this, the secondary cannon water pipe 220 and the first section 321 of the main cannon water pipe can be located on different sides of the first boom 120, for example, on the left and right sides of the first boom 120 as shown in the attached figures. Through the above structural design, this disclosure arranges the secondary cannon water pipe 220 and the main cannon water pipe on different sides of the first boom 120, which can further avoid interference from the main cannon water pipe on the swinging water spraying of the secondary cannon 210.

[0059] like Figure 5 As shown, based on the structural design that the secondary gun water pipe 220 and the main gun water pipe are located on different sides of the first boom 120, in one embodiment of this disclosure, the horizontal distance L1 between the secondary gun 210 and the first boom 120 can be 400mm to 650mm, for example, 400mm, 450mm, 500mm, 550mm, 650mm, etc. Through the above structural design, this disclosure can avoid the situation where the distance L1 is too small, making the clearance effect on the secondary gun 210 insufficient, and at the same time, it can avoid the situation where the distance L1 is too large, making the distance L1 between the secondary gun 210 and the first boom 120 too large, reducing the difficulty of arrangement and reducing space occupation. In other embodiments of this disclosure, the horizontal distance L1 between the secondary gun 210 and the first boom 120 can also be less than 400mm or greater than 650mm, for example, 399mm, 651mm, etc., and is not limited to this embodiment.

[0060] Reference Figure 6 , Figure 6 The image shows a partially enlarged view of the boom assembly of a fire truck, which embodies the principles of this disclosure, in yet another exemplary embodiment.

[0061] like Figure 6 As shown, in one embodiment of this disclosure, taking the fire truck proposed in this disclosure as an example, which also includes a main gun assembly, the secondary gun water pipe 220 and the first section 321 of the main gun water pipe can be located together on the left or right side of the first boom 120, and the secondary gun 210 and the first section 321 are arranged at intervals in the horizontal direction.

[0062] like Figure 6 As shown, based on the structural design that the secondary gun water pipe 220 and the main gun water pipe are both located on the same side of the first boom 120, in one embodiment of this disclosure, the horizontal distance L2 between the secondary gun 210 and the main gun water pipe can be 400mm to 650mm, for example, 400mm, 450mm, 500mm, 550mm, 650mm, etc. Through the above structural design, this disclosure can avoid the situation where the distance L2 is too small, making the separation and avoidance effect on the secondary gun 210 insufficient, and at the same time, it can avoid the situation where the distance L2 is too large, making the distance L2 between the secondary gun 210 and the main gun water pipe too large, reducing the difficulty of arrangement and reducing space occupation. In other embodiments of this disclosure, the horizontal distance L2 between the secondary gun 210 and the main gun water pipe can also be less than 400mm or greater than 650mm, for example, 399mm, 651mm, etc., and is not limited to this embodiment.

[0063] It should be noted that the fire trucks shown in the accompanying drawings and described in this specification are merely a few examples among many fire trucks to which the principles of this disclosure can be applied. It should be clearly understood that the principles of this disclosure are by no means limited to any details or components of the fire trucks shown in the accompanying drawings or described in this specification.

[0064] In summary, the fire truck disclosed herein includes a vehicle body and a boom assembly; the boom assembly includes a base 110, a first boom 120 and a second boom 130, the base 110 is disposed on the vehicle body, the first end of the first boom 120 is connected to the base 110, and the second end of the first boom 120 is connected to the second boom 130; the first boom 120 is provided with a secondary fire monitor assembly, the secondary fire monitor assembly includes a secondary fire monitor 210 and a secondary fire monitor water pipe 220 connected to the secondary fire monitor 210, the secondary fire monitor 210 is located on the left or right side of the second end; the secondary fire monitor 210 is disposed on the first boom 120 via a clearance structure, the clearance structure enabling the secondary fire monitor 210 and the second end to be spatially spaced apart. Through the above structural design, this disclosure utilizes an avoidance structure to achieve the spaced arrangement of the secondary gun 210 and the first boom 120, so that the second ends of the secondary gun 210 and the first boom 120 are spatially separated, avoiding the interference of the first boom 120 from affecting the swing amplitude of the secondary gun 210 toward the first boom 120, and ensuring the water-spraying effect of the secondary gun 210.

[0065] The exemplary embodiments of fire trucks proposed in this disclosure have been described and / or illustrated in detail above. However, the embodiments of this disclosure are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms “a,” “an,” and “the above” are used to indicate the presence of one or more elements / components / etc. The terms “comprising,” “including,” and “having” are used to indicate an open-ended inclusion and to mean that additional elements / components / etc. may exist in addition to those listed. Furthermore, the terms “first” and “second” in the claims and description are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.

[0066] Although the fire trucks proposed in this disclosure have been described according to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of this disclosure within the spirit and scope of the claims.

Claims

1. A fire truck, comprising a vehicle body and a boom assembly; the boom assembly comprising a base (110), a first boom (120) and a second boom (130), the base (110) being disposed on the vehicle body, a first end (121) of the first boom (120) being connected to the base (110), and a second end (122) of the first boom (120) being connected to the second boom (130); characterized in that, The first boom (120) is provided with a secondary gun assembly, which includes a secondary gun (210) and a secondary gun water pipe (220) connected to the secondary gun (210). The secondary gun (210) is located on the left or right side of the second end (122). The secondary gun (210) is disposed on the first boom (120) via a clearance structure, which allows the secondary gun (210) and the second end (122) to be spatially spaced apart.

2. The fire truck according to claim 1, characterized in that, The avoidance structure includes a telescopic drive mechanism (230), which can drive the secondary gun (210) to move along a first direction so that the secondary gun (210) can be adjusted between a first position and a second position, the first direction being the extension direction of the first boom (120); when the secondary gun (210) is in the first position, the secondary gun (210) is flush with or located behind the second end (122); when the secondary gun (210) is in the second position, the secondary gun (210) extends forward beyond the second end (122) so that the secondary gun (210) and the second end (122) are spaced apart in the first direction.

3. The fire truck according to claim 2, characterized in that, Along the first direction, the telescopic drive mechanism (230) drives the secondary gun (210) to move a distance greater than or equal to the length of the secondary gun (210).

4. The fire truck according to claim 2, characterized in that, The telescopic drive mechanism (230) is a hydraulic cylinder or an electric push rod.

5. The fire truck according to claim 2, characterized in that, The secondary gun water pipe (220) includes a main section (221) and a telescopic section (222); the main section (221) is connected to the first boom (120); the telescopic section (222) connects the main section (221) and the secondary gun (210), and the telescopic section (222) is a telescopic pipe structure.

6. The fire truck according to claim 1, characterized in that, The secondary gun water pipe (220) includes a main section (221) and a curved section (223); the main section (221) is connected to the first boom (120) and is a straight pipe structure; the curved section (223) connects the main section (221) and the secondary gun (210), and the curved section (223) is a bent pipe structure; in the horizontal direction, the end of the curved section (223) connected to the secondary gun (210) is farther away from the first boom (120) than the end connected to the main section (221), so that the secondary gun (210) and the second end (122) are spaced apart in the horizontal direction, and the curved section (223) is the avoidance structure.

7. The fire truck according to claim 6, characterized in that: The main body segment (221) is connected to the first boom (120) via a first fixing structure, the first fixing structure including a first clamp (241) and a first connecting rib (242); the first clamp (241) is disposed on the main body segment (221), and the first connecting rib (242) connects the first clamp (241) and the first boom (120); and / or The curved section (223) is connected to the first boom (120) via a second fixing structure, the second fixing structure including a second clamp (251) and a second connecting rib (252); the second clamp (251) is disposed on the curved section (223), and the second connecting rib (252) connects the second clamp (251) and the first boom (120).

8. The fire truck according to claim 6, characterized in that, The fire truck also includes a main gun assembly, which includes a main gun (310) and a main gun water pipe connected to the main gun (310). The main gun (310) is located at the end of the second boom (130) away from the first boom (120). The main gun water pipe includes a first section (321) disposed on the first boom (120) and a second section (322) disposed on the second boom (130). The auxiliary gun water pipe (220) and the first section (321) are respectively located on different sides of the first boom (120).

9. The fire truck according to claim 8, characterized in that, Along the horizontal direction, the distance (L1) between the secondary gun (210) and the first boom (120) is 400mm to 650mm.

10. The fire truck according to claim 6, characterized in that, The fire truck also includes a main gun assembly, which includes a main gun (310) and a main gun water pipe connected to the main gun (310). The main gun (310) is located at the end of the second boom (130) away from the first boom (120). The main gun water pipe includes a first section (321) disposed on the first boom (120) and a second section (322) disposed on the second boom (130). The auxiliary gun water pipe (220) and the first section (321) are located together on the left or right side of the first boom (120). The auxiliary gun (210) and the first section (321) are arranged at intervals in the horizontal direction.

11. The fire truck according to claim 10, characterized in that, Along the horizontal direction, the distance (L2) between the secondary gun (210) and the first segment (321) is 400mm to 650mm.

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