Movable fire monitor

Abstract

The invention discloses a movable fire monitor, which belongs to the technical field of fire fighting equipment, and is characterized in that the movable fire monitor comprises at least one water inlet pipe, a connecting pipe, a monitor barrel and a monitor head, the water inlet pipe is connected with the connecting pipe, the connecting pipe is rotatably connected to one end of the monitor barrel, and the monitor head is rotatably connected to the other end of the monitor barrel; according to the fire monitor, the water inlet pipe and the connecting pipe are manufactured respectively and then connected, so that the manufacturing difficulty can be effectively reduced, the manufacturing precision of the water inlet pipe and the connecting pipe can be remarkably improved, the weight of the water inlet pipe and the weight of the connecting pipe are controlled more accurately, and the manufacturing cost is reduced. And the problem of scrapping caused by substandard precision is effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire-fighting equipment, and particularly relates to a mobile fire-fighting cannon. Background Art

[0002] A fire-fighting water cannon is a commonly used fire-fighting tool. That is, pressurized water is ejected from the muzzle at a very high speed to form a water jet for extinguishing fires. During the operation of extinguishing fires, in order to improve the fire-extinguishing efficiency and ensure the safety of firefighters, the water cannon should be as close to the fire source as possible, while the firefighters should be as far away from the fire source as possible.

[0003] Chinese Patent with Publication No. CN219539320U discloses a mobile fire-fighting cannon, which includes a first connecting pipe, a second connecting pipe and a barrel. A plurality of water inlets are provided on the first connecting pipe, and a supporting device is installed at the bottom of the first connecting pipe. The bottom end of the second connecting pipe is rotatably connected to the top end of the first connecting pipe. The ball head at the bottom end of the barrel is installed in the ball head groove at the top end of the second connecting pipe, and through holes communicating with the barrel and the second connecting pipe respectively at both ends are provided on the ball head.

[0004] The above technical solution has the following defects: The first connecting pipe of this fire-fighting cannon is a bent pipe and is integrally formed. The first connecting pipe includes a horizontal section and a vertical section. Three water inlets are provided on the horizontal section of the first connecting pipe. The water inlets can be connected to a water supply device through a fire hose. The bottom end of the second connecting pipe is rotatably connected to the top end of the vertical section of the first connecting pipe, and the barrel can swing in the horizontal direction. The first connecting pipe is not easy to manufacture, and not only is it prone to precision errors, resulting in inability to connect, but it is also not conducive to later maintenance and replacement. Summary of the Invention

[0005] The purpose of the present invention is to propose a mobile fire-fighting cannon for the above problems existing in the prior art. The technical problem to be solved by the present invention is: how to reduce the difficulty of production and manufacturing.

[0006] The above technical purpose of the present invention can be achieved by the following technical solutions: A mobile fire-fighting cannon includes at least one water inlet pipe, a connecting pipe, a barrel and a muzzle. The water inlet pipe is connected to the connecting pipe. The connecting pipe is rotatably connected to one end of the barrel. The muzzle is rotatably connected to the other end of the barrel.

[0007] In the above mobile fire-fighting cannon, the water inlet pipe is welded to the connecting pipe. A first threaded section is provided at the end of the water inlet pipe, and a second threaded section is provided at the end of the connecting pipe. The first threaded section is threadedly connected to the second threaded section.

[0008] In the above-mentioned mobile fire cannon, a control box is provided on the barrel, an interface 1 is provided on the control box, a battery pack is detachably provided on the control box, an interface 2 is provided on the battery pack, and the interface 2 can be docked with the interface 1.

[0009] In the above-mentioned mobile fire cannon, the upper surface of the control box abuts against the lower surface of the battery pack, and a positioning plate is provided on the control box, and the positioning plate has a positioning portion. The side wall of the battery pack is provided with a positioning groove adapted to the positioning portion, and the positioning portion can be inserted into the positioning groove. A limiting plate is provided on the battery pack, and the limiting plate closes the notch of the positioning groove, and the surface of the limiting plate can abut against the surface of the positioning portion. A deformable deformation plate is provided on the positioning plate, and the deformation plate can be buckled on the upper surface of the limiting plate.

[0010] In the above-mentioned mobile fire monitor, the positioning groove and the positioning portion are both in the shape of a regular trapezoid, and the limiting plate is in the shape of an "H".

[0011] In the above-mentioned mobile fire monitor, a baffle is arranged on the positioning plate, and the baffle is used to limit the position of the deformation plate.

[0012] In the above-mentioned mobile fire cannon, at least two driving assemblies are arranged on the cannon barrel, and both of the two driving assemblies are electrically connected to the control box, and the two driving assemblies are respectively used to drive the connecting pipe and the cannon head to rotate.

[0013] In the above-mentioned mobile fire cannon, the driving assembly includes a rotary driving source, a worm, a transmission shaft and a handwheel. The output end of the rotary driving source is connected to the worm, and the handwheel is transmission-connected to the output end of the rotary driving source through the transmission shaft. The connecting pipe and the gun head are both provided with a worm wheel part for meshing with the worm.

[0014] In the above-mentioned mobile fire cannon, a protective shell corresponding to the driving assembly is installed on the barrel, the hand wheel is rotatably arranged on the protective shell, the rotary driving source is arranged in the protective shell, a sealing ring 1 is arranged between one end of the protective shell and the barrel, a sealing seat is installed at the other end of the protective shell, the transmission shaft passes through the sealing seat, and a sealing ring 2 is arranged between the transmission shaft and the sealing seat.

[0015] In the above-mentioned mobile fire monitor, the end of the connecting pipe is rotatably connected to a swivel joint, a connecting head is threadedly connected to the swivel joint, and a quick-connect joint is internally threadedly connected to the connecting head.

[0016] In the above-mentioned mobile fire monitor, a protrusion is provided on the battery pack, and a groove corresponding to the protrusion is provided on the control box, and the protrusion can be inserted into or disengaged from the groove.

[0017] In the above-mentioned mobile fire monitor, a bracket is installed inside the swivel joint, a deflector is detachably connected to the bracket, and a deflector surface is provided on the deflector.

[0018] In summary, the beneficial effects of the present invention compared with the prior art are as follows: By separately manufacturing the water inlet pipe and the connecting pipe, and then connecting the water inlet pipe and the connecting pipe, not only can the difficulty of production and manufacturing be effectively reduced, but also the production and manufacturing precision of the water inlet pipe and the connecting pipe can be significantly improved, and the weights of the water inlet pipe and the connecting pipe can be more accurately controlled, effectively avoiding the problem of scrapping due to unqualified precision. In addition, the battery pack and the control box can be quickly disassembled and assembled. When carrying multiple battery packs, the battery life of this fire monitor can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of Embodiment 1; Figure 2 is a cross-sectional view of Embodiment 1; Figure 3 is Figure 2 an enlarged view of part A of Figure 4 is Figure 2 an enlarged view of part B of Figure 5 is a partial cross-sectional view of Embodiment 1; Figure 6 is a schematic structural diagram of the connecting pipe of Embodiment 1; Figure 7 is a partial schematic structural diagram of Embodiment 1; Figure 8 is a schematic structural diagram of the control box of Embodiment 1; Figure 9 is a schematic structural diagram of the battery pack of Embodiment 1; Figure 10 is a partial exploded view of the structure of Embodiment 1.

[0020] Figure 11 is a schematic structural diagram of Embodiment 2; Figure 12 is a cross-sectional view of Embodiment 2; Figure 13 is Figure 12 an enlarged view of part C of

[0021] Reference numerals: 1, water inlet pipe; 2, connecting pipe; 3, barrel; 4, gun head; 5, first threaded section; 6, second threaded section; 7, control box; 8, first interface; 9, second interface; 10, positioning plate; 11, positioning portion; 12, positioning groove; 13, limiting plate; 14, deformation plate; 15, baffle; 16, drive assembly; 161, rotary drive source; 162, worm; 163, transmission shaft; 164, hand wheel; 17, worm gear portion; 18, protective housing; 19, first sealing ring; 20, second sealing ring; 21, sealing seat; 22, swivel joint; 23, connecting head; 24, quick-connect joint; 25, battery pack; 26, protrusion; 27, groove; 28, bracket; 29, guide vane; 30, guide surface. Detailed implementation manners

[0022] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments. Embodiment 1:

[0023] A mobile fire fighting gun, as Figures 1 to 10 shown, includes at least one water inlet pipe 1, a connecting pipe 2, a barrel 3 and a gun head 4, and the water inlet pipe 1 is connected to the connecting pipe 2.

[0024] As Figure 1 shown, in this embodiment, the number of the water inlet pipes 1 is one. It should be noted that the number of the water inlet pipes 1 can also be appropriately increased, and no specific limitation is made thereto. All the water inlet pipes 1 are only required to be connected to the connecting pipe 2.

[0025] As Figures 5 to 6 shown, in this embodiment, a first threaded section 5 is provided at the end of the water inlet pipe 1, and a second threaded section 6 is provided at the end of the connecting pipe 2. The first threaded section 5 is threadedly connected to the second threaded section 6, and the water inlet pipe 1 is welded to the connecting pipe 2. The connection between the water inlet pipe 1 and the connecting pipe 2 is achieved through the cooperation of the first threaded section 5 and the second threaded section 6, ensuring the relative stability between the water inlet pipe 1 and the connecting pipe 2. It should be noted that since the water inlet pipe 1 and the connecting pipe 2 need to face high-pressure water flow or other stress conditions, the threaded connection between the water inlet pipe 1 and the connecting pipe 2 cannot meet the requirement of the connection strength. Therefore, the water inlet pipe 1 and the connecting pipe 2 are welded to ensure the connection strength between the water inlet pipe 1 and the connecting pipe 2, and the durability and reliability of their connection.

[0026] As another solution, the water inlet pipe 1 and the connecting pipe 2 can also be connected by a plugging method and then welded.

[0027] It should be noted that in the prior art, the water inlet pipe 1 and the connecting pipe 2 are usually formed as one piece. Although the strength of the structure can be guaranteed, due to the difficulty in production and manufacturing, it is easy to have substandard precision, resulting in scrapping, which seriously affects the production efficiency. In this embodiment, the water inlet pipe 1 and the connecting pipe 2 are produced separately and then connected to each other, which can effectively reduce the difficulty of production and manufacturing, significantly improve the production and manufacturing precision of the water inlet pipe 1 and the connecting pipe 2, and can accurately control the weight of the water inlet pipe 1 and the connecting pipe 2, effectively avoiding the problem of scrapping due to substandard precision.

[0028] The connecting pipe 2 is rotatably connected to one end of the barrel 3, that is, the connecting pipe 2 can rotate relative to the barrel 3, and the connecting pipe 2 drives the water inlet pipe 1 to rotate, so as to facilitate the connection of the water supply hose to the water inlet pipe 1, and the gun head 4 is rotatably connected to the other end of the barrel 3, that is, the gun head 4 can rotate relative to the barrel 3, and the gun head 4 rotates to adjust the direction of water spray. As for how to realize the rotatable connection between the connecting pipe 2 and the gun head 4 and the barrel 3, this belongs to the prior art and will not be elaborated on. For details, please refer to the Chinese patent with announcement number CN111255925B. The rotatable connection structure of the connecting pipe 2 and the gun head 4 and the barrel 3 is the same as the structure of the rotatable connection between the rotating part and the water inlet channel disclosed in the above-mentioned Chinese patent.

[0029] like Figures 2 to 4 As shown, at least two driving assemblies 16 are arranged on the barrel 3. The two driving assemblies 16 are respectively used to drive the connecting tube 2 and the gun head 4 to rotate, and the two driving assemblies 16 have the same structure.

[0030] Specifically, the driving assembly 16 includes a rotating driving source 161, a worm 162, a transmission shaft 163 and a handwheel 164. The rotating driving source 161 is preferably a motor. Of course, other driving sources with a rotating function can also be used. The output end of the rotating driving source 161 is connected to the worm 162. The connecting tube 2 and the gun head 4 are both provided with a worm wheel portion 17 for meshing with the worm 162. It should be noted that, under normal circumstances, the corresponding rotating driving source 161 is started to drive the corresponding worm 162 to rotate, and the worm 162 cooperates with the corresponding worm wheel portion 17 to rotate the connecting tube 2 or the gun head 4.

[0031] It should be noted that due to the complexity and uncertainty of the disaster relief environment, power outages are likely to occur. At this time, the rotary drive source 161 cannot be started. In view of the above situation, in this embodiment, the handwheel 164 is drivingly connected to the output end of the rotary drive source 161 through the transmission shaft 163. That is, when the rotary drive source 161 cannot be started, the operator can manually rotate the handwheel 164. The handwheel 164 drives the output end of the rotary drive source 161 to rotate through the transmission shaft 163. The output end of the rotary drive source 161 drives the worm 162 to rotate. The worm 162 cooperates with the corresponding worm wheel part 17 to rotate the connecting pipe 2 or the gun head 4. That is, even without power supply, the connecting pipe 2 or the gun head 4 can still be rotated, fully considering the use requirements in complex and emergency situations, with stronger adaptability and greater reliability.

[0032] Furthermore, a protective housing 18 corresponding to the drive assembly 16 is installed on the barrel 3. The handwheel 164 is rotatably arranged on the protective housing 18, and the rotary drive source 161 is arranged inside the protective housing 18. A first sealing ring 19 is arranged between one end of the protective housing 18 and the barrel 3. A sealing seat 21 is installed at the other end of the protective housing 18. Preferably, the sealing seat 21 is threadedly connected inside the protective housing 18. The transmission shaft 163 passes through the sealing seat 21, and a second sealing ring 20 is arranged between the transmission shaft 163 and the sealing seat 21. The first sealing ring 19 seals between one end of the protective housing 18 and the barrel 3, and the sealing seat 21 and the second sealing ring 20 cooperate to seal the other end of the protective housing 18, thereby preventing water and external impurities from affecting the normal use of the rotary drive source 161 and ensuring the reliability of the equipment.

[0033] As Figures 7 to 10 shown, a control box 7 is arranged on the barrel 3. Both drive assemblies 16 are electrically connected to the control box 7. Specifically, the rotary drive sources 161 of the two drive assemblies 16 are electrically connected to the control box 7. That is, the operator can control the start and stop of the two rotary drive sources 161 through the control box 7, and then realize the control of the rotation of the connecting pipe 2 or the gun head 4.

[0034] An interface 8 is arranged on the control box 7. A battery pack 25 is detachably arranged on the control box 7. An interface 9 is arranged on the battery pack 25. The interface 9 can be docked with the interface 8 to realize the normal power supply of the battery pack 25 to the control box 7. By supplying power through the battery pack 25, the constraints and limitations brought by the traditional wired power supply method are avoided, making the use of the equipment more free and flexible. Moreover, since the battery pack 25 can be detachably replaced, the battery life of the equipment can be effectively enhanced.

[0035] In this embodiment, the disassembly structure of the battery pack 25 is as follows. First, the upper surface of the control box 7 abuts against the lower surface of the battery pack 25, that is, the control box 7 supports the battery pack 25, thereby restricting the battery pack 25 from moving downward in the vertical direction, ensuring the stability of the battery pack 25. Moreover, under the action of the gravity of the battery pack 25, the interface two 9 on the battery pack 25 can be more stably docked with the interface one 8 on the control box 7.

[0036] Secondly, a positioning plate 10 is provided on the control box 7. In this embodiment, the positioning plate 10 is connected to the control box 7 by screws. The positioning plate 10 has a positioning portion 11. A positioning groove 12 adapted to the positioning portion 11 is formed on the side wall of the battery pack 25. The positioning portion 11 can be inserted into the positioning groove 12. Both the positioning groove 12 and the positioning portion 11 are in the shape of a regular trapezoid. By restricting the positioning portion 11 by the positioning groove 12, the relative stability between the battery pack 25 and the control box 7 is ensured, thereby restricting the battery pack 25 from moving horizontally. Moreover, through the cooperation of the positioning portion 11 and the positioning groove 12, when installing the battery pack 25, the docking of the interface one 8 and the interface two 9 can be quickly realized.

[0037] A limiting plate 13 is provided on the battery pack 25. The limiting plate 13 is connected to the battery pack 25 by screws. In this embodiment, the limiting plate 13 is in the shape of an "H". The limiting plate 13 is connected to the battery pack 25 by screws. The limiting plate 13 closes the notch of the positioning groove 12. When the positioning portion 11 is inserted into the positioning groove 12 and the surface of the limiting plate 13 abuts against the surface of the positioning portion 11, at this time, since the surface of the positioning portion 11 abuts against the bottom of the positioning groove 12, the battery pack 25 is restricted from moving longitudinally.

[0038] A deformable plate 14 is provided on the positioning plate 10. The lower end of the deformable plate 14 is connected to the positioning plate 10 by screws. The deformable plate 14 can be buckled on the upper surface of the limiting plate 13, thereby restricting the battery pack 25 from moving upward in the vertical direction.

[0039] By limiting the battery pack 25 in the vertical, horizontal and longitudinal directions, the stability of the battery pack 25 can be ensured, so that the battery pack 25 and the control box 7 remain relatively stable.

[0040] A baffle 15 is provided on the positioning plate 10. The baffle 15 is used to limit the deformable plate 14 to prevent the deformable plate 14 from being damaged due to excessive deformation caused by operation errors.

[0041] The battery pack 25 is provided with a protrusion 26, and the control box 7 is provided with a groove 27 corresponding to the protrusion 26. The protrusion 26 and the groove 27 are adapted to each other. The protrusion 26 is frustum-shaped, which further facilitates the insertion or detachment of the protrusion 26 into or from the groove 27. Preferably, there are two protrusions 26 and they are spaced apart. The number of grooves 27 corresponds to the number of protrusions 26 one by one. In this embodiment, the number of protrusions 26 and grooves 27 is not specifically limited.

[0042] It should be noted that when the protrusion 26 is inserted into the groove 27, through the restriction of the protrusion 26 by the groove 27, the stability of the battery pack 25 can be further ensured, and the stability of the docking of the interface one 8 and the interface two 9 can be ensured. Moreover, through the guiding of the protrusion 26 by the groove 27, the docking of the interface one 8 and the interface two 9 can be quickly completed, which can effectively improve the efficiency.

[0043] The principle of disassembling the battery pack 25 is as follows. First, the deformation plate 14 is deformed by an external force, and the upper end of the deformation plate 14 moves away from the limiting plate 13. At this time, the battery pack 25 can be moved upward in the vertical direction. The battery pack 25 drives the limiting plate 13 to move away from the deformation plate 14, and the positioning portion 11 on the positioning plate 10 also disengages from the positioning groove 12, that is, the disassembly of the battery pack 25 is completed.

[0044] The principle of installing the battery pack 25 is as follows. First, the positioning portion 11 on the positioning plate 10 is aligned with the positioning groove 12, then the deformation plate 14 is deformed by an external force, and finally the battery pack 25 is moved so that the positioning portion 11 on the positioning plate 10 is inserted into the positioning groove 12. Finally, the deformation plate 14 is restored and buckled on the upper surface of the limiting plate 13, that is, the installation of the battery pack 25 is completed.

[0045] The disassembly and assembly operations of the battery pack 25 are simple, and no tools are required. The disassembly and replacement of the battery pack 25 can be quickly and accurately completed, greatly reducing the time-consuming for replacing the battery pack 25, meeting the actual needs of the disaster relief environment, and ensuring the continuity and high efficiency of the disaster relief work.

[0046] The end of the connecting pipe 2 is rotatably connected with a swivel joint 22. As for how to achieve the rotational connection between the swivel joint 22 and the connecting pipe 2, this belongs to the prior art and will not be elaborated here. Specifically, reference can be made to the Chinese patent with the publication number CN111255925B. The rotational connection structure between the swivel joint 22 and the connecting pipe 2 is the same as the structure of the rotational connection between the rotating member and the water inlet channel disclosed in the above-mentioned Chinese patent. Specifically, the set screw is threadedly connected to the connecting pipe 2 and inserted into the annular groove on the outer side wall of the swivel joint 22 to prevent the swivel joint 22 from separating from the connecting pipe 2. Rotating the set screw and removing it can make the swivel joint 22 disengage from the connecting pipe 2 to complete the disassembly.

[0047] The swivel joint 22 is threadedly connected to a connector 23, and the connector 23 is internally threadedly connected to a quick connector 24. When any one of the swivel joint 22, the connector 23 and the quick connector 24 is worn or damaged, they can be removed and replaced separately for maintenance, thereby effectively reducing maintenance costs. Embodiment 2:

[0048] The difference between the second embodiment and the first embodiment is that: Figures 11 to 13 As shown, in the present embodiment, there are multiple water inlet pipes 1, a bracket 28 is installed in the swivel joint 22, the bracket 28 is threadedly connected to the swivel joint 22, a guide plate 29 is detachably connected to the bracket 28, the guide plate 29 is threadedly connected to the bracket 28, a guide surface 30 is provided on the guide plate 29, the guide surface 30 is an arc-shaped surface, and the chaotic water flow acts on the guide surface 30 when passing through, so that the water flow is stably diverted to the periphery, thereby achieving the effect of steady flow, avoiding high-pressure and chaotic flow directly impacting the fire monitor and causing abnormal displacement or tipping of the fire monitor.

[0049] The specific embodiments described in this article are merely illustrative of the spirit of the present invention; technicians in the technical field to which the present invention belongs may make various modifications or additions to the described specific embodiments or replace them in a similar manner, but will not deviate from the spirit of the present invention or exceed the scope defined by the attached claims.

Claims

1. A mobile fire monitor, characterized in that: The invention comprises at least one water inlet pipe (1), a connecting pipe (2), a gun barrel (3) and a gun head (4); the water inlet pipe (1) is connected to the connecting pipe (2); the connecting pipe (2) is rotatably connected to one end of the gun barrel (3); and the gun head (4) is rotatably connected to the other end of the gun barrel (3).

2. The mobile fire monitor according to claim 1, characterized in that: The water inlet pipe (1) is welded to the connecting pipe (2); a first threaded section (5) is provided at the end of the water inlet pipe (1); a second threaded section (6) is provided at the end of the connecting pipe (2); the first threaded section (5) is threadedly connected to the second threaded section (6).

3. A mobile fire monitor according to claim 1, characterized in that: The barrel (3) is provided with a control box (7), the control box (7) is provided with an interface 1 (8), the control box (7) is detachably provided with a battery pack (25), the battery pack (25) is provided with an interface 2 (9), and the interface 2 (9) can be docked with the interface 1 (8).

4. The mobile fire monitor according to claim 3, wherein: The upper surface of the control box (7) is in contact with the lower surface of the battery pack (25); a positioning plate (10) is provided on the control box (7); the positioning plate (10) has a positioning portion (11); a side wall of the battery pack (25) is provided with a positioning groove (12) adapted to the positioning portion (11); the positioning portion (11) can be inserted into the positioning groove (12); a limiting plate (13) is provided on the battery pack (25); the limiting plate (13) closes the notch of the positioning groove (12); and the surface of the limiting plate (13) can be in contact with the surface of the positioning portion (11); a deformable deformation plate (14) is provided on the positioning plate (10); the deformation plate (14) can be buckled on the upper surface of the limiting plate (13).

5. The mobile fire monitor according to claim 4, characterized in that: The positioning groove (12) and the positioning portion (11) are both in the shape of a regular trapezoid, and the limiting plate (13) is in the shape of an "H".

6. The mobile fire monitor according to claim 5, characterized in that: A baffle (15) is provided on the positioning plate (10), and the baffle (15) is used to limit the position of the deformation plate (14).

7. The mobile fire monitor according to claim 3, characterized in that: At least two drive assemblies (16) are arranged on the barrel (3), and both of the two drive assemblies (16) are electrically connected to the control box (7). The two drive assemblies (16) are respectively used to drive the connecting tube (2) and the gun head (4) to rotate.

8. A mobile fire monitor according to claim 7, characterized in that: The driving assembly (16) comprises a rotation driving source (161), a worm (162), a transmission shaft (163) and a hand wheel (164); the output end of the rotation driving source (161) is connected to the worm (162); the hand wheel (164) is transmission-connected to the output end of the rotation driving source (161) via the transmission shaft (163); and a worm wheel portion (17) for meshing with the worm (162) is provided on the connecting pipe (2) and the gun head (4).

9. The mobile fire monitor according to claim 8, wherein: A protective housing (18) corresponding to the drive assembly (16) is installed on the gun barrel (3). The handwheel (164) is rotatably arranged on the protective housing (18), and the rotary drive source (161) is arranged inside the protective housing (18). A first sealing ring (19) is arranged between one end of the protective housing (18) and the gun barrel (3). A sealing seat (21) is installed at the other end of the protective housing (18). The transmission shaft (163) passes through the sealing seat (21), and a second sealing ring (20) is arranged between the transmission shaft (163) and the sealing seat (21).

10. A mobile fire monitor according to claim 1, characterized in that: A swivel joint (22) is rotatably connected to the end of the connecting pipe (2). A connector (23) is threadedly connected to the swivel joint (22), and a quick connector (24) is internally threadedly connected to the connector (23).

11. A mobile fire monitor according to claim 3, characterized in that: A protrusion (26) is arranged on the battery pack (25), and a groove (27) corresponding to the protrusion (26) is arranged on the control box (7). The protrusion (26) can be inserted into or disengaged from the groove (27).

12. A mobile fire monitor according to claim 10, characterized in that: A bracket (28) is installed inside the swivel joint (22). A flow guide vane (29) is detachably connected to the bracket (28), and a flow guide surface (30) is arranged on the flow guide vane (29).

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