Vehicle-mounted fire monitor

Abstract

The invention relates to the technical field of fire monitors, in particular to a vehicle-mounted fire monitor which comprises a connecting pipe, a monitor body, a horizontal rotating mechanism, a pitching rotating mechanism and a monitor head, the connecting pipe, the monitor body and the monitor head are sequentially connected, the monitor body comprises a first bent pipe, a middle rotating mechanism and a second bent pipe, and the pitching rotating mechanism is connected with the second bent pipe and the monitor head. The pitching angle of the monitor head is adjusted; the middle slewing mechanism is connected with the first bent pipe and the second bent pipe and used for adjusting the pitching angle of the second bent pipe so as to drive the cannon head to conduct secondary pitching angle adjustment; the horizontal rotating mechanism is connected with the first bent pipe and the connecting pipe and used for adjusting the monitor body to drive the monitor head to rotate by 360 degrees around the connecting pipe. The vehicle-mounted fire monitor overcomes the technical defects that an existing vehicle-mounted fire monitor cannot conduct secondary adjustment on the pitching angle of a monitor head, the operation angle of the monitor head is limited, the space adaptability is poor, when the pitching angle of the monitor head is adjusted to the limit, the monitor head possibly interferes with the body structure of a fire truck, and the fire extinguishing precision is seriously affected.

Description

Technical Field

[0001] The present invention relates to the technical field of fire monitors, and in particular to a vehicle-mounted fire monitor. Background Art

[0002] Fire monitors are devices that use water or foam as a medium to extinguish fires at long and short distances through high-pressure spraying.

[0003] Currently, an existing patent (publication number: CN101491717B) discloses a long-range vehicle-mounted fire water monitor, which includes a horizontal swivel joint, a lower bend pipe, a pitching swivel joint, and a cannon head. The lower bend pipe is connected between the horizontal swivel joint and the pitching swivel joint, and the pitching swivel joint is connected between the cannon head and the lower bend pipe. The horizontal swivel joint is used to adjust the 360-degree rotation of the lower bend pipe, and the pitching swivel joint is used to adjust the pitch angle of the cannon head.

[0004] However, the above-mentioned vehicle-mounted fire water monitor has the following defects when in use:

[0005] 1. Since the pitch angle of the gun head is adjusted only through the pitch swivel joint, the pitch angle of the gun head cannot be adjusted secondary, resulting in limited operating angles of the gun head and poor spatial adaptability;

[0006] 2. When the pitch angle adjustment of the gun head reaches the limit, the gun head may interfere with the side panel structure of the fire truck, seriously affecting the accuracy of fire extinguishing, thereby reducing the spraying ability of the gun head in three-dimensional space. Summary of the Invention

[0007] In response to the shortcomings of the existing technology, one of the purposes of the present invention is to provide a vehicle-mounted fire cannon, which aims to solve the technical problem that the existing vehicle-mounted fire cannon cannot perform secondary adjustment of the pitch angle of the gun head during use, resulting in limited operating angle of the gun head and poor spatial adaptability. When the pitch angle adjustment of the gun head reaches the limit, the gun head may interfere with the side panel of the fire truck, seriously affecting the accuracy of fire extinguishing.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A vehicle-mounted fire monitor comprises a connecting pipe, a gun body, a horizontal rotation mechanism, a pitch rotation mechanism and a gun head, wherein the connecting pipe, gun body and gun head are connected in sequence, the gun body and gun head are connected via the pitch rotation mechanism, and the pitch rotation mechanism is used to adjust the pitch angle of the gun head; the connecting pipe and gun body are connected via the horizontal rotation mechanism, and the horizontal rotation mechanism is used to adjust the gun body to rotate 360° around the connecting pipe to drive the gun head to rotate 360° around the connecting pipe; the gun body comprises a first bend pipe, a middle rotation mechanism and a second bend pipe, the first bend pipe is connected to the horizontal rotation mechanism, the second bend pipe is connected to the pitch rotation mechanism, the first bend pipe and the second bend pipe are connected via the middle rotation mechanism, and the middle rotation mechanism is used to adjust the pitch angle of the second bend pipe to drive the gun head to perform secondary pitch angle adjustment.

[0010] Furthermore, the central rotating mechanism includes a first shell, a first worm gear and a first connecting ring, the first connecting ring is fixed in the first shell; the first worm gear is rotatably arranged in the first shell, the first worm gear is located on the outer ring of the first connecting ring, a sealing ring is provided between the first worm gear and the inner wall of the first shell, and the first worm gear can rotate relative to the first connecting ring; the outlet end of the first bend pipe is provided with a first connecting flange, the first connecting flange is detachably connected to the first shell, and the inlet end of the second bend pipe is provided with a second connecting flange, the second connecting flange is detachably connected to the top surface of the first worm gear, and the second connecting flange covers the upper port of the first shell; wherein, the inlet end of the second bend pipe is connected to the outlet end of the first bend pipe in the first shell.

[0011] Furthermore, a first annular groove is provided on the outer ring wall of the first connecting ring along its circumference, and a second annular groove corresponding to the first annular groove is provided on the inner ring wall of the first worm gear. The first annular groove and the second annular groove are combined to form a first ball channel, and a plurality of balls are arranged in the first ball channel.

[0012] Furthermore, the horizontal rotating mechanism includes a second shell, a second worm gear and a second connecting ring, the bottom end of the second shell is detachably connected to the third connecting flange on the outer wall of the connecting pipe, and the second connecting ring is fixed in the second shell; the second worm gear is rotatably arranged in the second shell, the second worm gear is located on the outer ring of the second connecting ring, a sealing ring is provided between the second worm gear and the inner wall of the second shell, and the second worm gear can rotate relative to the second connecting ring; the inlet end of the first bend pipe is provided with a fourth connecting flange, the fourth connecting flange is detachably connected to the top surface of the second worm gear, and the fourth connecting flange covers the upper port of the second shell; wherein, the outlet end of the connecting pipe is connected to the inlet end of the first bend pipe in the second shell.

[0013] Furthermore, a third annular groove is provided on the outer ring wall of the second connecting ring along its circumference, and a fourth annular groove corresponding to the third annular groove is provided on the inner ring wall of the second worm gear. The third annular groove and the fourth annular groove are combined to form a second ball channel, and a plurality of balls are arranged in the second ball channel.

[0014] Furthermore, the pitch and rotation mechanism includes a third housing, a third worm gear and a third connecting ring, and the third connecting ring is fixed in the third housing; the third worm gear is rotatably arranged in the third housing, and the third worm gear is located on the outer ring of the third connecting ring. A sealing ring is provided between the third worm gear and the inner wall of the third housing, and the third worm gear can rotate relative to the third connecting ring; the outlet end of the second bend pipe is provided with a fifth connecting flange, and the fifth connecting flange is detachably connected to the third housing, and the inlet end of the gun head is provided with a sixth connecting flange, and the sixth connecting flange is detachably connected to the top surface of the third worm gear, and the sixth connecting flange covers the upper port of the third housing; wherein, the outlet end of the second bend pipe and the inlet end of the gun head are connected in the third housing.

[0015] Furthermore, a fifth annular groove is provided on the outer ring wall of the third connecting ring along its circumference, and a sixth annular groove corresponding to the fifth annular groove is provided on the inner ring wall of the third worm gear. The fifth annular groove and the sixth annular groove are combined to form a third ball channel, and a plurality of balls are arranged in the third ball channel.

[0016] Furthermore, the middle rotating mechanism adjusts the pitch angle range of the second bend pipe to be controlled within a range of -30° to +90°.

[0017] Furthermore, the elevation and deflection mechanism adjusts the elevation angle of the gun head to a range of -30° to +70°.

[0018] Furthermore, the middle rotating mechanism is driven by electric drive or manual drive; the pitch rotating mechanism is driven by electric drive or manual drive; and the horizontal rotating mechanism is driven by electric drive or manual drive.

[0019] Compared with the prior art, the present invention has the following significant effects:

[0020] When the vehicle-mounted fire monitor of the present invention is in use, the connecting pipe is connected vertically to the water supply pipe on the fire truck. Since the connecting pipe, the gun body and the gun head are connected in sequence, the connecting pipe and the gun body are connected by a horizontal rotation mechanism, and the gun body and the gun head are connected by a pitch rotation mechanism. Based on this, by adjusting the gun body to rotate 360° around the connecting pipe through the horizontal rotation mechanism, the gun body can drive the gun head to rotate 360° around the connecting pipe, thereby realizing horizontal rotation of the gun head; by adjusting the pitch angle of the gun head through the pitch rotation mechanism, the gun head can be made to perform pitch movement. In addition, since the gun body is composed of a first bend, a middle rotating mechanism and a second bend, the first bend and the second bend are respectively connected to the horizontal rotating mechanism and the pitch rotating mechanism, and the first bend and the second bend are connected through the middle rotating mechanism. Based on this, the pitch angle of the second bend is adjusted by the middle rotating mechanism, and the second bend drives the gun head to swing upward or downward around the first bend, thereby realizing secondary pitch angle adjustment of the gun head, overcoming the problem that the existing vehicle-mounted waterproof gun cannot perform secondary adjustment of the pitch angle of the gun head when in use, resulting in limited operating angle of the gun head and poor spatial adaptability. When the pitch angle adjustment of the gun head reaches the limit, the gun head may interfere with the side panel of the fire truck, seriously affecting the accuracy of fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the vehicle-mounted fire monitor of the present invention;

[0022] Figure 2 for Figure 1 A structural diagram from another angle;

[0023] Figure 3 for Figure 2 The main view;

[0024] Figure 4 for Figure 2 Rear view;

[0025] Figure 5 for Figure 3 Cross-sectional view at AA in the middle;

[0026] Figure 6 for Figure 3 Cross-sectional view at the middle BB;

[0027] Figure 7 middle Figure 3 Cross-sectional view at CC.

[0028] Figure Number:

[0029] 1. Connecting pipe; 10. Third connecting flange; 2. Gun barrel; 20. First elbow; 201. First connecting flange; 202. Fourth connecting flange; 21. Central rotary mechanism; 210. First housing; 211. First worm gear; 212. First connecting ring; 213. First annular groove; 214. Second annular groove; 215. First ball channel; 216. First transmission chamber; 217. First sealing ring; 22. Second elbow; 220. Second connecting flange; 221. Fifth connecting flange; 3. Horizontal rotation mechanism; 30, second housing; 31, second worm gear; 32, second connecting ring; 33, third annular groove; 34, fourth annular groove; 35, second ball channel; 36, second transmission chamber; 37, second sealing ring; 4, pitch rotation mechanism; 40, third housing; 41, third worm gear; 42, third connecting ring; 43, fifth annular groove; 44, sixth annular groove; 45, third ball channel; 46, third transmission chamber; 47, third sealing ring; 5, gun head; 50, sixth connecting flange. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] In the description of the present invention, it should be understood that the terms "width", "up", "down", "front", "back", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0033] Please refer to Figure 1 - Figure 7 The present invention provides a vehicle-mounted fire monitor, comprising a connecting pipe 1, a gun body 2, a horizontal rotation mechanism 3, a pitch rotation mechanism 4 and a gun head 5.

[0034] The connecting tube 1, the gun body 2 and the gun head 5 are connected in sequence. The gun body 2 and the gun head 5 are connected via the elevation rotation mechanism 4. The elevation rotation mechanism 4 is used to adjust the elevation angle of the gun head 5. The elevation rotation mechanism 4 adjusts the elevation angle of the gun head 5 to a range of -30° to +70°. The connecting tube 1 and the gun body 2 are connected via the horizontal rotation mechanism 3. The horizontal rotation mechanism 3 is used to adjust the gun body 2 to rotate 360° around the connecting tube 1, so as to drive the gun head 5 to rotate 360° around the connecting tube 1.

[0035] The gun barrel 2 includes a first curved pipe 20, a central rotating mechanism 21, and a second curved pipe 22. The first curved pipe 20 is connected to the horizontal rotating mechanism 3, and the second curved pipe 22 is connected to the elevation rotating mechanism 4. The first curved pipe 20 and the second curved pipe 22 are connected via the central rotating mechanism 21. The central rotating mechanism 21 is used to adjust the elevation angle of the second curved pipe 22. The elevation movement of the second curved pipe 22 drives the gun head 5 to swing upward or downward about the first curved pipe 20, thereby achieving secondary elevation adjustment of the gun head 5. The central rotating mechanism adjusts the elevation angle of the second curved pipe 22 within a range of -30° to +90°.

[0036] For example, in one application scenario, after the fire monitor is installed on the top of the car on a fire truck, the gun head 5 of the fire monitor is usually in a horizontal state, and the gun head 5 is in a parallel state with the car side panel. Of course, the gun head 5 is higher than the car side panel. When the horizontal rotation mechanism 3 adjusts the gun body 2 to drive the gun head 5 to rotate around the connecting pipe 1 to a certain angle with the car side panel (such as 30°, 60°, or 90°), if the pitch rotation mechanism 4 adjusts the gun head 5 to swing downward 15° around the gun body 2, the gun head 5 just happens to mechanically interfere with the car side panel. In this case, the firefighter can adjust the telescopic second bend 22 through the middle rotation mechanism 21 to swing upward around the first bend 20, thereby driving the gun head 5 to swing upward around the first bend 20, solving the problem of mechanical interference between the gun head 5 and the car side panel. Then, the pitch rotation mechanism 4 continues to adjust the gun head 5 to swing downward around the second bend 22, so that the gun head 5 can accurately extinguish tire fires or ground fires.

[0037] In summary, during the operation of the fire cannon, when the elevation and rotation mechanism 4 adjusts the elevation angle of the gun head 5, if the gun head 5 interferes with the side panel structure of the fire truck's compartment, the elevation angle of the second bend 22 can be adjusted by the middle rotation mechanism 21, so that the second bend 22 drives the gun head 5 to swing upward or downward around the first bend 20. In this way, the problem of interference between the gun head 5 and the side panel structure of the fire truck's compartment can be solved, the operating angle of the gun head 5 is greatly improved, and the spatial adaptability of the gun head 5 is improved, thereby improving the spraying ability of the gun head 5 in three-dimensional space.

[0038] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 6 The central rotating mechanism 21 includes a first housing 210, a first worm gear 211, and a first connecting ring 212. The first connecting ring 212 is fixed in the first housing 210; the first worm gear 211 is rotatably arranged in the first housing 210, and the first worm gear 211 is located on the outer ring of the first connecting ring 212. The first worm gear 211 can rotate relative to the first connecting ring 212 around the first bend 20. A first connecting flange 201 is fixed to the outlet end of the first bend 20. The first connecting flange 201 is fixed to the first housing 210 with screws, realizing a detachable connection between the first connecting flange 201 and the first housing 210; a second connecting flange 220 is fixed to the inlet end of the second bend 22. The second connecting flange 220 is fixed to the top surface of the first worm gear 211 with screws, realizing a detachable connection between the second connecting flange 220 and the first worm gear 211. Of course, the second connecting flange 220 covers the upper end of the first housing 210, and the inlet end of the second elbow 22 is connected to the outlet end of the first elbow 20 within the first housing 210. In addition, a first sealing ring 217 is provided between the first worm gear 211 and the inner wall of the first housing 210 to seal the gap between the first connecting flange 201 and the first housing 210.

[0039] In one embodiment, the present invention further includes a first drive unit (not shown), which includes a first motor and a first reduction mechanism. The first motor can be fixed to the outer wall of the first housing 210. The first motor is connected to the first reduction mechanism, which is connected to a first worm. The first worm extends vertically. The first housing 210 is formed with a first transmission cavity 216 communicating with the interior thereof. The first worm is located in the first transmission cavity 216 and meshes with the first worm gear 211. Therefore, it can be seen that the first motor drives the first reduction mechanism to drive the first worm, which can drive the first worm gear 211 to rotate around the first curved pipe 20, thereby achieving the purpose of causing the second curved pipe 22 to perform a pitching motion around the first curved pipe 20.

[0040] In one embodiment, a first annular groove 213 is provided on the outer ring wall of the first connecting ring 212 along its circumference, and a second annular groove 214 corresponding to the first annular groove 213 is provided on the inner ring wall of the first worm gear 211. The first annular groove 213 and the second annular groove 214 are combined to form a first ball channel 215. A plurality of balls are arranged in the first ball channel 215. The plurality of balls in the first ball channel 215 can reduce the friction between the first worm gear 211 and the first connecting ring 212, so that the second bend pipe 22 can rotate around the first bend pipe 20 more smoothly.

[0041] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 7 The horizontal rotary mechanism 3 includes a second housing 30, a second worm gear 31, and a second connecting ring 32. The bottom end of the second housing 30 is screwed to the third connecting flange 10 on the outer wall of the connecting pipe 1, achieving a detachable connection between the second housing 30 and the connecting pipe 1. The second connecting ring 32 is fixed within the second housing 30 and is coaxial with the connecting pipe 1. The second worm gear 31 is rotatably disposed within the second housing 30 and is located on the outer ring of the second connecting ring 32. The second worm gear 31 is rotatable relative to the second connecting ring 32. A fourth connecting flange 202 is fixed to the inlet end of the first curved pipe 20. The fourth connecting flange 202 is screwed to the top surface of the second worm gear 31, achieving a detachable connection between the fourth connecting flange 202 and the second worm gear 31. Of course, the fourth connecting flange 202 covers the upper end of the second housing 30. The outlet end of the connecting pipe 1 and the inlet end of the first curved pipe 20 are connected within the second housing 30. In addition, a second sealing ring 37 is provided between the second worm gear 31 and the inner wall of the second housing 30 for sealing the gap between the fourth connecting flange 202 and the second housing 30 .

[0042] In one embodiment, the present invention further includes a second drive unit (not shown), which includes a second motor and a second reduction mechanism. The second motor can be fixed to the outer wall of the second housing 30. The second motor is connected to the second reduction mechanism, which is connected to a second worm. The second worm extends horizontally. The second housing 30 is formed with a second transmission cavity 36 communicating with the interior thereof. The second worm is located within the second transmission cavity 36 and meshes with the second worm gear 31. As can be seen, the second motor drives the second reduction mechanism to drive the second worm, thereby driving the second worm gear 31 to rotate around the connecting pipe 1, thereby achieving the purpose of horizontal rotation of the first curved pipe 20 around the connecting pipe 1.

[0043] In one embodiment, a third annular groove 33 is defined along the circumference of the outer wall of the second connecting ring 32. A fourth annular groove 34 corresponding to the third annular groove 33 is defined on the inner wall of the second worm gear 31. The third and fourth annular grooves 33 and 34 merge to form a second ball channel 35. Multiple balls are disposed within the second ball channel 35. The multiple balls within the second ball channel 35 reduce friction between the second worm gear 31 and the second connecting ring 32, thereby facilitating smoother rotation of the first curved pipe 20 about the connecting pipe 1.

[0044] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 5 The pitch and slew mechanism 4 includes a third housing 40, a third worm gear 41, and a third connecting ring 42. The third connecting ring 42 is fixed in the third housing 40; the third worm gear 41 is rotatably arranged in the third housing 40, and is located on the outer ring of the third connecting ring 42. The third worm gear 41 can rotate relative to the third connecting ring 42. The outlet end of the second curved pipe 22 is fixed with a fifth connecting flange 221, which is detachably connected to the third housing 40. The inlet end of the gun head 5 is fixed with a sixth connecting flange 50, which is fixed to the top surface of the third worm gear 41 by screws, realizing a detachable connection between the sixth connecting flange 50 and the third worm gear 41. Of course, the sixth connecting flange 50 covers the upper port of the third housing 40. The outlet end of the second curved pipe 22 is connected to the inlet end of the gun head 5 in the third housing 40. In addition, a third sealing ring 47 is provided between the third worm gear 41 and the inner wall of the third housing 40 for sealing the gap between the sixth connecting flange 50 and the third housing 40 .

[0045] In one embodiment, the present invention further includes a third drive unit (not shown), which includes a third motor and a third reduction mechanism. The third motor can be fixed to the outer wall of the third housing 40. The third motor is connected to the third reduction mechanism, which is connected to a third worm. The third worm extends horizontally. The third housing 40 is formed with a third transmission cavity 46 communicating with the interior thereof. The third worm is located in the third transmission cavity 46 and meshes with the third worm gear 41. Therefore, it can be seen that the third motor drives the third reduction mechanism to drive the third worm gear, which can drive the third worm gear 41 to rotate around the second curved pipe 22, thereby achieving the purpose of pitching and rotating the gun head 5 around the second curved pipe 22.

[0046] A fifth annular groove 43 is defined along the circumference of the outer wall of the third connecting ring 42. A sixth annular groove 44 corresponding to the fifth annular groove 43 is defined on the inner wall of the third worm gear 41. The fifth and sixth annular grooves 43 and 44 merge to form a third ball channel 45. Multiple balls are positioned within the third ball channel 45. The multiple balls within the third ball channel 45 reduce friction between the third worm gear 41 and the third connecting ring 42, allowing the lance 5 to rotate more smoothly around the second curved tube 22.

[0047] In one embodiment, the central rotating mechanism 21 can be selectively driven by electric drive or manual drive; the pitch rotating mechanism 4 can be selectively driven by electric drive or manual drive; and the horizontal rotating mechanism 3 can be selectively driven by electric drive or manual drive. When the horizontal rotating mechanism 3 is driven by electric drive, the first drive unit described above can be used; when the central rotating mechanism 21 is driven by electric drive, the second drive unit described above can be used; and when the pitch rotating mechanism 4 is driven by electric drive, the third drive unit described above can be used.

[0048] Of course, the above-mentioned first motor, second motor and third motor can be controlled by an electrical control box, such as the first motor, second motor and third motor are connected to the program control elements of the electrical control box, such as a PLC controller, encoder or relay, etc., and the control box drives the first motor, the second motor and the third motor to rotate independently or synchronously, thereby realizing multi-joint (the gun head 5 is a joint, the first bend 20 is a joint, and the second bend 22 is a joint) synchronous motion control, so that the fire cannon of the present invention can adapt to flexible operations in complex scenarios.

[0049] In other embodiments, the central rotating mechanism 21, the pitch rotating mechanism 4 and the horizontal rotating mechanism 3 can also be driven manually, so that when the city power is interrupted, the fire monitor can still continue to operate, meeting the all-weather emergency needs of complex scenes such as petrochemical tank areas and docks.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vehicle-mounted fire monitor, comprising a connecting pipe, a gun body, a horizontal rotation mechanism, a pitch rotation mechanism, and a gun head, wherein the connecting pipe, gun body, and gun head are connected in sequence, the gun body and gun head are connected via the pitch rotation mechanism, and the pitch rotation mechanism is used to adjust the pitch angle of the gun head; the connecting pipe and gun body are connected via the horizontal rotation mechanism, and the horizontal rotation mechanism is used to adjust the gun body to rotate 360° around the connecting pipe, thereby driving the gun head to rotate 360° around the connecting pipe; characterized in that The gun body includes a first bend pipe, a middle rotating mechanism and a second bend pipe. The first bend pipe is connected to the horizontal rotating mechanism, and the second bend pipe is connected to the elevation rotating mechanism. The first bend pipe and the second bend pipe are connected through the middle rotating mechanism. The middle rotating mechanism is used to adjust the elevation angle of the second bend pipe to drive the gun head to perform secondary elevation angle adjustment.

2. A vehicle-mounted fire monitor according to claim 1, characterized in that: The central rotating mechanism includes a first shell, a first worm gear and a first connecting ring, the first connecting ring is fixed in the first shell; the first worm gear is rotatably arranged in the first shell, the first worm gear is located on the outer ring of the first connecting ring, a sealing ring is provided between the first worm gear and the inner wall of the first shell, and the first worm gear can rotate relative to the first connecting ring; the outlet end of the first bend pipe is provided with a first connecting flange, the first connecting flange is detachably connected to the first shell, and the inlet end of the second bend pipe is provided with a second connecting flange, the second connecting flange is detachably connected to the top surface of the first worm gear, and the second connecting flange covers the upper port of the first shell; wherein, the inlet end of the second bend pipe is connected to the outlet end of the first bend pipe in the first shell.

3. A vehicle-mounted fire monitor according to claim 2, characterized in that: A first annular groove is provided on the outer ring wall of the first connecting ring along its circumference, and a second annular groove corresponding to the first annular groove is provided on the inner ring wall of the first worm gear. The first annular groove and the second annular groove are combined to form a first ball channel, and a plurality of balls are arranged in the first ball channel.

4. A vehicle-mounted fire monitor according to claim 1, characterized in that: The horizontal rotating mechanism includes a second shell, a second worm gear and a second connecting ring. The bottom end of the second shell is detachably connected to the third connecting flange on the outer wall of the connecting pipe, and the second connecting ring is fixed in the second shell; the second worm gear is rotatably arranged in the second shell, and the second worm gear is located on the outer ring of the second connecting ring. A sealing ring is provided between the second worm gear and the inner wall of the second shell, and the second worm gear can rotate relative to the second connecting ring; the inlet end of the first bend pipe is provided with a fourth connecting flange, and the fourth connecting flange is detachably connected to the top surface of the second worm gear, and the fourth connecting flange covers the upper port of the second shell; wherein, the outlet end of the connecting pipe is connected to the inlet end of the first bend pipe in the second shell.

5. A vehicle-mounted fire monitor according to claim 4, characterized in that: A third annular groove is provided on the outer ring wall of the second connecting ring along its circumference, and a fourth annular groove corresponding to the third annular groove is provided on the inner ring wall of the second worm gear. The third annular groove and the fourth annular groove are combined to form a second ball channel, and a plurality of balls are arranged in the second ball channel.

6. The vehicle-mounted fire monitor according to claim 1, characterized in that: The pitch and rotation mechanism includes a third housing, a third worm gear and a third connecting ring, and the third connecting ring is fixed in the third housing; the third worm gear is rotatably arranged in the third housing, and the third worm gear is located on the outer ring of the third connecting ring. A sealing ring is provided between the third worm gear and the inner wall of the third housing, and the third worm gear can rotate relative to the third connecting ring; the outlet end of the second bend pipe is provided with a fifth connecting flange, and the fifth connecting flange is detachably connected to the third housing, and the inlet end of the gun head is provided with a sixth connecting flange, and the sixth connecting flange is detachably connected to the top surface of the third worm gear, and the sixth connecting flange covers the upper port of the third housing; wherein, the outlet end of the second bend pipe is connected with the inlet end of the gun head in the third housing.

7. A vehicle-mounted fire monitor according to claim 6, characterized in that: A fifth annular groove is provided on the outer ring wall of the third connecting ring along its circumference, and a sixth annular groove corresponding to the fifth annular groove is provided on the inner ring wall of the third worm gear. The fifth annular groove and the sixth annular groove are combined to form a third ball channel, and a plurality of balls are arranged in the third ball channel.

8. The vehicle-mounted fire monitor according to claim 1, characterized in that: The middle rotating mechanism adjusts the pitch angle of the second bend pipe to be controlled within a range of -30° to +90°.

9. The vehicle-mounted fire monitor according to claim 1, characterized in that: The elevation rotation mechanism adjusts the elevation angle of the gun head to be controlled within a range of -30° to +70°.

10. The vehicle-mounted fire monitor according to claim 1, characterized in that: The middle rotating mechanism is driven by electric drive or manual drive; the pitch rotating mechanism is driven by electric drive or manual drive; and the horizontal rotating mechanism is driven by electric drive or manual drive.

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