Self-swinging fire monitor based on hydraulic driving

Abstract

The invention relates to the technical field of fire monitors, and discloses a self-swinging fire monitor based on hydraulic drive, the self-swinging fire monitor comprises a monitor body and a base, the monitor body is rotatably mounted on the base, one side of the base is communicated with a fixed shell, a speed reducer is mounted on the fixed shell, and a disc is mounted on the speed reducer; a driving assembly used for driving the disc to rotate is installed in the fixed shell, the circular plate is driven to rotate relative to the disc, the eccentric distance of the sliding column relative to the rotating center is accurately adjusted through the composite guiding and limiting effect of the transverse groove and the semi-annular groove on the sliding column, and then the reciprocating swing angle of the cannon body is changed. The fire strafing range can be flexibly adjusted according to the actual area of a fire scene, water resource waste caused by too large swing during small-area fire extinguishment is avoided, no-missing coverage during large-area fire extinguishment can be ensured, when the sliding column moves to the center position, the fire strafing device is suitable for extinguishment of roadways, long and narrow spaces or fixed-point fire sources, and the fire extinguishing efficiency is improved. And stable direct current coverage or small-amplitude accurate scanning is realized.

Description

Technical Field

[0001] This invention relates to the field of fire monitor technology, specifically to a water-driven self-swinging fire monitor. Background Technology

[0002] As a key firefighting equipment, fire monitors work by converting water with specific pressure and flow rate into kinetic energy, forming a high-speed jet that is ejected from the nozzle to extinguish fires over long distances. Traditional fixed fire monitors, due to their fixed jet range, usually require manual hand-held operation or remote control to adjust the direction of firefighting. However, in dangerous or difficult-to-intervene scenarios such as unattended pumping stations, pedestrian walkways in ship locks, and petrochemical storage tank areas, these fire monitors are prone to blind spots and have slow response times, making it difficult to meet the requirements of fully automatic firefighting.

[0003] To address the aforementioned shortcomings, existing technologies have developed fire monitors that can automatically swing. One typical solution is an externally driven self-swinging monitor, whose swinging action relies on an independent electric motor or pneumatic system. However, in extreme situations where power outages or pneumatic pipeline damage due to high temperatures often occur at fire scenes, the power source of such devices is prone to failure, causing the swinging mechanism to jam and losing its ability to cover a wide area for fire suppression.

[0004] To overcome the aforementioned drawbacks of relying on external power, the industry has developed hydraulic self-oscillating fire monitors in recent years. Their core innovation lies in utilizing the water power of the extinguishing agent itself as a driving source. Water is introduced into a tank or impeller chamber mounted on a fixed pipe, driving the impeller to rotate. After being reduced in speed and torque by a reduction mechanism, the impeller head actuator achieves automatic reciprocating oscillation. While this design eliminates dependence on external power or air supply, its oscillation mechanism is typically controlled by a fixed mechanical stroke (such as a cam or crank structure), resulting in a fixed oscillation angle for the impeller head. This structural characteristic reveals new problems in practical applications: First, its swing range cannot be adjusted according to the actual area of ​​the fire. If a large-angle sweep is performed in a small fire, it will result in a large amount of ineffective spraying of fire extinguishing water and a waste of resources. Conversely, if the fire area is large, the fixed swing angle will create fire extinguishing blind spots. Secondly, since the water flow is continuous during the firefighting process, the hydraulic drive mechanism also operates continuously, and the nozzle swings constantly. When fighting fires in alleys, narrow spaces, or targeting specific point fire sources, what is often needed is direct current coverage or small-amplitude sweeping. Continuous idling not only does not help extinguish the fire, but also exacerbates the waste of water resources and reduces the efficiency of firefighting. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a hydraulically driven self-swinging fire monitor, which aims to solve problems such as the fixed swing angle of existing hydraulic self-swinging fire monitors, the inconvenience of adjusting according to the fire area, and the waste of water resources caused by continuous swinging.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water-driven self-swinging fire monitor, comprising a monitor body and a base, wherein the monitor body is rotatably mounted on the base, a fixed housing is connected to one side of the base, a reducer is mounted on the fixed housing, a disc is mounted on the reducer, a driving component for driving the disc to rotate is installed inside the fixed housing, a protective housing is rotatably fitted on the outside of the monitor body, the protective housing is rotatably connected to the disc, a toothed ring is fixedly fitted inside the protective housing, a toothed plate is engaged on one side of the toothed ring and slidably connected to the protective housing, a reciprocating component for controlling the reciprocating movement of the toothed plate is provided at the upper end of the disc, a cavity is opened inside the disc, a transverse groove is opened at the upper end of the disc communicating with the cavity, a sliding column for driving the reciprocating component to move is slidably arranged in the transverse groove, a rotating component for controlling the movement of the sliding column is rotatably arranged in the cavity, and the adjustment of the position of the sliding column is used to change the stroke of the toothed plate.

[0007] Preferably, the fixed housing has a water inlet pipe and a connecting pipe fixedly connected to its outer side. The connecting pipe is fixedly connected to the base, and the water inlet pipe is connected to an external water supply device. The gun body is rotatably connected to the base. The drive assembly includes a rotating rod rotatably connected to the fixed housing. Multiple push blades are fixedly installed on the outer side of the rotating rod. The rotating rod is fixedly connected to one of the rotating shafts of the reducer. The other rotating shaft of the reducer is fixedly connected to a disc. The housing of the reducer is fixedly installed on the fixed housing.

[0008] Preferably, the reciprocating assembly includes a rectangular block slidably connected to the protective housing, the upper end of the rectangular block having a rectangular opening through it, the upper end of the sliding column being located inside the rectangular opening, a sliding opening being provided on one side of the rectangular block, and the toothed plate being slidably connected to the sliding opening.

[0009] Preferably, the width of the rectangular opening is greater than the diameter of the sliding column, a telescopic component is provided through the sliding column, and a connector for controlling the telescopic component to extend and retract is installed at the lower end of the sliding column within the cavity.

[0010] Preferably, the rotating component includes a circular plate rotatably connected to the upper wall of the cavity. A semi-annular groove is formed through the upper end of the circular plate, and the semi-annular groove communicates with the transverse groove. The lower end of the sliding column passes through the semi-annular groove and slides in contact with it. A push plate is fixedly installed on one side of the circular plate. A connection port communicating with the cavity is formed on one side of the disc. The push plate passes through the connection port and slides in contact with it. A tightening bolt for fixing the push plate is threadedly connected to the outer side of the disc.

[0011] Preferably, the telescopic component includes a through opening on one side of the sliding column, two L-shaped push blocks are slidably disposed in the through opening, and two arc-shaped placement openings communicating with the through opening are opened on the outside of the sliding column, and an arc-shaped support plate fixedly connected to the L-shaped push blocks is placed in the arc-shaped placement opening.

[0012] Preferably, the connector includes a ring rotatably sleeved on the lower end of the sliding column, with two arc-shaped openings at the upper end of the ring, and two push rods slidably disposed within the arc-shaped openings. The push rods are fixedly connected to corresponding L-shaped push blocks. Multiple connecting teeth are fixedly installed on the outer side of the ring, and a sawtooth block that meshes with the connecting teeth is fixedly installed at the bottom of the cavity.

[0013] Preferably, one end of the semi-annular groove and the transverse groove are both located at the center of the circular plate. When the sliding column slides to the center of the circular plate, the arc-shaped support plate extends out and contacts the inner wall of the rectangular opening.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. To achieve flexible adjustment of the gun body's swing angle to adapt to different fire-fighting needs and avoid water waste or blind spots caused by a fixed swing range, this invention features a circular plate rotatably mounted within the cavity of a disc. A semi-annular groove, connected to a transverse groove, is formed through the upper end of the circular plate. The lower end of a sliding column passes through the semi-annular groove and slides in contact with it. By driving the circular plate to rotate relative to the disc, the combined guiding and limiting effect of the transverse groove and the semi-annular groove on the sliding column precisely adjusts the eccentricity of the sliding column relative to the rotation center, thereby changing the reciprocating swing angle of the gun body. This configuration allows for flexible adjustment of the sweeping range according to the actual fire area, avoiding water waste due to excessive swing when extinguishing small-area fires and ensuring no missed coverage when extinguishing large-area fires. Furthermore, one end of both the semi-annular groove and the transverse groove extends to the center of the circular plate. When the sliding column moves to this center position, the gun body switches to a direct current spray mode, suitable for extinguishing fires in tunnels, narrow spaces, or fixed-point fire sources, achieving stable direct current coverage or precise sweeping with small amplitude.

[0015] 2. To avoid the cannon body being in a continuous swinging state under the continuous action of water flow, which would lead to water waste due to excessive sweeping in the fire extinguishing edge area, this invention sets the width of the rectangular opening to be greater than the diameter of the sliding column. When the sliding column rotates with the circular plate and pushes the rectangular block to move, if the sliding column is not in contact with the inner wall of the rectangular opening, the sliding column cannot transmit driving force to the rectangular block. At this time, the cannon body is not subjected to thrust and will pause briefly. Although there is a certain inertia, due to the mass of the cannon body itself, its swing speed is effectively reduced within the pause interval. This setting allows the cannon body to form an intermittent pause interval in the reciprocating motion stroke, effectively reducing the continuous swing degree of the cannon body, thereby shortening the actual stroke of the water flow sweeping left and right, reducing ineffective spraying in the fire extinguishing edge area, and further improving the efficiency of water resource utilization while ensuring effective coverage of the fire site.

[0016] 3. To effectively control the gun body to maintain a direct jet or only produce a slight oscillation when extinguishing fires in narrow areas such as alleyways and long, narrow spaces, and to avoid water waste caused by continuous sweeping, this invention has a through-hole on one side of the sliding column. Two L-shaped push blocks are slidably installed in the through-hole, and two arc-shaped openings are opened on the ring at the lower end of the sliding column. When the sliding column moves to the center position of the disc, the ring is driven to rotate by the cooperation of the connecting teeth and the sawtooth block, thereby controlling the movement of the two L-shaped push blocks, so that the arc-shaped support plate is pushed out and can form a contact state with the inner wall of the rectangular opening. During the rotation of the disc, the transmission relationship between the rectangular block and the sliding column is switched from forced push to non-contact or micro-contact state, thereby realizing the direct jet locking of the gun body or only retaining a very small amplitude of follow-up oscillation. This not only meets the operational requirements of fixed-point fire extinguishing in narrow spaces, but also significantly improves the flexibility of the hydraulic drive mechanism in switching operating conditions and the efficiency of water resource utilization. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a three-dimensional structural diagram showing the connection between the gun body, toothed ring, and toothed plate of the present invention. Figure 3 This is a schematic diagram showing the positional relationship between the reciprocating component and the gun body of the present invention; Figure 4 This is a three-dimensional cross-sectional structural diagram of the fixed housing of the present invention; Figure 5 This is a three-dimensional cross-sectional structural diagram of the disk of the present invention; Figure 6 This is a schematic diagram of the disassembled three-dimensional structure of the disk and the circular plate of the present invention; Figure 7 This is a three-dimensional structural diagram of the reciprocating component of the present invention; Figure 8This is a three-dimensional structural diagram showing the slide, telescopic assembly, and connector of the present invention.

[0018] In the diagram: 1. Gun body; 2. Base; 3. Fixed shell; 4. Connecting pipe; 5. Disc; 6. Water inlet pipe; 7. Reducer; 8. Gear ring; 9. Protective shell; 10. Gear plate; 11. Rectangular block; 12. Push blade; 13. Rotating rod; 14. Horizontal groove; 15. Rectangular opening; 16. Sliding column; 17. Tightening bolt; 18. Serrated block; 19. Connecting port; 20. Push plate; 21. Circular plate; 22. Semi-annular groove; 23. Sliding opening; 24. Cavity; 25. Through-hole; 26. Arc-shaped support plate; 27. Connecting tooth; 28. Arc-shaped opening; 29. ​​Push rod; 30. L-shaped push block; 31. Arc-shaped placement opening; 32. Circular ring. Detailed Implementation

[0019] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0020] Please see Figures 1-8 A water-driven self-swinging fire monitor includes a monitor body 1 and a base 2. The monitor body 1 is rotatably mounted on the base 2 (this type of rotatable fire monitor is existing technology and will not be described in detail here). A fixed housing 3 is connected to one side of the base 2. A water inlet pipe 6 and a connecting pipe 4 are fixedly connected to the outside of the fixed housing 3. The connecting pipe 4 is fixedly connected to the base 2. The water inlet pipe 6 is connected to an external water supply device. The monitor body 1 is rotatably connected to the base 2. A reducer 7 is mounted on the fixed housing 3. A disc 5 is mounted on the reducer 7. A drive assembly for driving the disc 5 to rotate is installed inside the fixed housing 3. The drive assembly includes a rotating rod 13 rotatably connected to the fixed housing 3. Multiple push blades 12 are fixedly mounted on the outside of the rotating rod 13. The rotating rod 13 is connected to one of the reducers 7. The shaft is fixedly connected, and the other shaft of the reducer 7 is fixedly connected to the disc 5. The housing of the reducer 7 is fixedly installed on the fixed housing 3 (the use and working principle of the reducer 7 are well known to those skilled in the art, and will not be explained in detail here. The reducer 7 is used to slow down the rotation speed of the disc 5). An external water supply device is used to input water into the fixed housing 3 through the water inlet pipe 6. The rotating rod 13 is driven to rotate by the push blade 12. The rotating rod 13 drives the disc 5 to rotate slowly through the reducer 7. The outer side of the gun body 1 is fitted with a protective housing 9. The base 2, the protective housing 9 and the fixed housing 3 can be installed on a fixed seat or a movable trolley during specific use. Fixing can be achieved by installing ears, flanges and bolts. No further restrictions are made here. The protective shell 9 is rotatably connected to the disc 5. The gun body 1 is fixedly fitted with a toothed ring 8 inside the protective shell 9. A toothed plate 10 is engaged with the protective shell 9 on one side of the toothed ring 8. A reciprocating assembly for controlling the reciprocating movement of the toothed plate 10 is provided at the upper end of the disc 5. A cavity 24 is provided inside the disc 5. A transverse groove 14 communicating with the cavity 24 is provided at the upper end of the disc 5. A sliding column 16 for driving the reciprocating assembly is slidably arranged in the transverse groove 14. The reciprocating assembly includes a rectangular block 11 slidably connected to the protective shell 9. A rectangular opening 15 is provided through the upper end of the rectangular block 11. The upper end of the sliding column 16 is located inside the rectangular opening 15. A sliding opening 23 is provided on one side of the rectangular block 11. The toothed plate 10 is slidably connected to the sliding opening 23. During the water conveying process, when the disk 5 is pushed to rotate, the disk 5 drives the sliding column 16 to move. The sliding column 16 drives the rectangular block 11 to move back and forth through the rectangular opening 15. The rectangular block 11 drives the toothed plate 10 to move back and forth. The toothed plate 10 drives the toothed ring 8 to rotate back and forth. The toothed ring 8 drives the gun body 1 to swing back and forth. The rectangular block 11 is in a sliding state with the sliding opening 23 during the movement. The swing of the gun body 1 is achieved by conveying water for fire extinguishing. To achieve flexible adjustment of the swing angle of the gun body 1 to adapt to the fire extinguishing needs under different fire conditions and avoid water waste or fire extinguishing blind spots caused by a fixed swing range, a rotating component is rotatably installed in the cavity 24 to control the movement of the sliding column 16. The adjustment of the position of the sliding column 16 is used to change the stroke of the toothed plate 10. The rotating component includes a circular plate 21 rotatably connected to the upper wall of the cavity 24. A semi-annular groove 22 is opened through the upper end of the circular plate 21, which is connected to the transverse groove 14. The lower end of the sliding column 16 passes through the semi-annular groove 22 and slides in contact with it (the lower end of the sliding column 16 is slidably connected to the lower wall of the cavity 24). A push plate 20 is fixedly installed on one side of the circular plate 21. A connection port 19 communicating with the cavity 24 is opened on one side of the disc 5. The push plate 20 passes through the connection port 19 and is slidably connected to it. A push plate is threadedly connected to the outer side of the disc 5. 20. Tighten the bolt 17 to fix it. First, rotate the bolt 17 to release the limit on the push plate 20. Then, push the circular plate 21 to rotate relative to the disc 5 through the push plate 20. Utilize the combined guiding and limiting effect of the transverse groove 14 and the semi-annular groove 22 on the sliding column 16 to accurately adjust the eccentricity of the sliding column 16 relative to the rotation center, thereby changing the reciprocating swing angle of the gun body 1. With this setting, the sweeping range can be flexibly adjusted according to the actual area of ​​the fire. This avoids water waste caused by excessive swing when extinguishing small fires, and ensures no omissions when extinguishing large fires. One end of the semi-annular groove 22 and the transverse groove 14 are located at the center of the circular plate 21. When the sliding column 16 moves to this center position, the gun body 1 switches to the direct current spray state, which is suitable for extinguishing fires in tunnels, narrow spaces, or fixed fire sources, and achieves stable direct current coverage or precise sweeping with small amplitude.

[0021] As a further technical solution of the present invention, the width of the rectangular opening 15 is greater than the diameter of the sliding column 16. When the sliding column 16 rotates with the disc 5 and pushes the rectangular block 11 to move, if the sliding column 16 is not in contact with the inner wall of the rectangular opening 15, the sliding column 16 cannot transmit driving force to the rectangular block 11. At this time, the gun body 1 is not subjected to thrust and will pause briefly. Although there is a certain inertial effect, since the gun body 1 has a certain mass, its swing speed can be effectively reduced in the pause interval. With this setting, the gun body 1 can form an intermittent pause interval in the reciprocating motion stroke, effectively reducing the continuous swing degree of the gun body 1, thereby shortening the actual stroke of the water flow sweeping left and right, reducing ineffective spraying in the edge area of ​​fire extinguishing, and further improving the efficiency of water resource utilization while ensuring effective coverage of the fire scene.

[0022] As a further technical solution of the present invention, in order to effectively control the gun body 1 to maintain a direct jet state or only produce a slight oscillation when extinguishing fires in narrow areas such as tunnels and long and narrow spaces, and to avoid water waste caused by continuous sweeping, a telescopic component is installed through the sliding column 16. A connector for controlling the extension and retraction of the telescopic component is installed at the lower end of the sliding column 16 in the cavity 24. The telescopic component includes a through-hole 25 opened on one side of the sliding column 16. Two L-shaped push blocks 30 are slidably arranged in the through-hole 25. Two arc-shaped placement openings 31 are opened on the outside of the sliding column 16 and communicate with the through-hole 25. An arc-shaped support plate 26 fixedly connected to the L-shaped push block 30 is placed in the arc-shaped placement opening 31. The connector includes a ring 32 rotatably sleeved on the lower end of the sliding column 16. Two arc-shaped openings 28 are opened at the upper end of the ring 32. Two push rods 29 are slidably arranged in the arc-shaped openings 28. The push rods 29 are fixedly connected to the corresponding L-shaped push blocks 30. A connector is fixedly installed on the outside of the ring 32. Multiple connecting teeth 27 are fixedly installed at the bottom of the cavity 24, and sawtooth blocks 18 that mesh with the connecting teeth 27 are installed. When the sliding column 16 slides to the center position of the circular plate 21, the arc-shaped support plate 26 extends out and contacts the inner wall of the rectangular opening 15. When the sliding column 16 moves to the center position of the disc 5, it will drive the ring 32 to rotate after it meshes with the sawtooth block 18 through the connecting teeth 27. Through the restriction of the arc-shaped opening 28, the movement of the two push rods 29 is controlled. The push rods 29 push the L-shaped push block 30 to move. The L-shaped push block 30 pushes out the arc-shaped support plate 26, which can form a contact state with the inner wall of the rectangular opening 15. During the rotation of the disc 5, the transmission relationship between the rectangular block 11 and the sliding column 16 is switched from forced push to non-contact or micro-contact state, thereby realizing the DC locking of the gun body 1 or only retaining a very small amplitude of follow-up swing. This not only meets the operational requirements of fixed-point fire extinguishing in narrow spaces, but also significantly improves the working condition switching flexibility and water resource utilization efficiency of the hydraulic drive mechanism.

[0023] During work: I. Hydraulic Drive and Power Transmission Step 1: Water flow activation Connect the external water supply equipment to the inlet pipe 6, turn on the water source, and the water with a certain pressure and flow rate enters the fixed shell 3 through the inlet pipe 6. After flowing through the push blade 12, it is finally delivered to the gun body 1 for spraying through the connecting pipe 4 and the base 2. During the process of the water flow through the fixed shell 3, it impacts the push blade 12 and drives the rotating rod 13 to rotate, converting the kinetic energy of the water flow into the mechanical rotational energy of the rotating rod 13. This driving method relies entirely on the energy of the extinguishing medium itself and does not require an external power source or gas source. It can still work stably in extreme fire environments such as power outages or damage to pneumatic pipelines, and has high reliability and environmental adaptability. Step 2: Deceleration and Torque Increase The rotating rod 13 inputs the rotational power into the reducer 7. After the reducer 7 reduces the speed and increases the torque, it drives the disc 5 to rotate at a set low speed. By adjusting the reducer 7, the disc 5 obtains a suitable output speed, ensuring that the subsequent swing mechanism can operate smoothly and controllably, and avoiding the impact on fire extinguishing caused by excessively high speed and excessively fast swing frequency. II. Adjusting the swing angle to adapt to different fire areas Step 3: Adjust the eccentricity of slide 16 According to the actual area of ​​the fire, the operator loosens the tightening bolt 17 and pushes the push plate 20 to make the circular plate 21 rotate relative to the disc 5. When the circular plate 21 rotates, the semi-annular groove 22 on it and the horizontal groove 14 on the disc 5 together form a composite guide for the sliding column 16, so that the sliding column 16 slides along the horizontal groove 14, changing its eccentricity relative to the rotation center of the disc 5. After adjustment, the tightening bolt 17 is locked to fix the circular plate 21. The eccentricity of the sliding column 16 determines the stroke length of the subsequent reciprocating component driving the rectangular block 11, thereby controlling the reciprocating swing angle of the gun body 1. The operator can flexibly set the swing range according to the fire area. When extinguishing a small area of ​​fire, the eccentricity is reduced to reduce the sweeping range and avoid water waste. When extinguishing a large area of ​​fire, the eccentricity is increased to expand the sweeping range and ensure that there are no blind spots in fire extinguishing. Step 4: DC locking of center position When it is necessary to extinguish fires in alleys, narrow spaces, or fixed fire sources, the sliding column 16 is adjusted to the center position of the disc 5 by the push plate 20, so that the intersection of the semi-annular groove 22 and the transverse groove 14 is located at the center of rotation. When the sliding column 16 is in the center position, its eccentricity is zero, and it cannot drive the rectangular block 11 to produce reciprocating motion. The gun body 1 switches to the DC jet state to achieve stable DC coverage or only retain a small amplitude of follow-up swing, which meets the operation requirements of fixed-point fire extinguishing in narrow spaces. III. Reciprocating Oscillation and Intermittent Transmission Step 5: Reciprocating oscillation drive When the disc 5 rotates, it drives the sliding column 16 to revolve around the center of the disc 5. The upper end of the sliding column 16 is located inside the rectangular opening 15 of the rectangular block 11. When the sliding column 16 contacts the inner wall of the rectangular opening 15, it pushes the rectangular block 11 to slide back and forth on the protective shell 9. The rectangular block 11 drives the toothed plate 10 to move back and forth through the sliding opening 23. The toothed plate 10 meshes with the toothed ring 8 to drive the gun body 1 to swing back and forth around the base 2, converting the uniform rotational motion of the disc 5 into the reciprocating swinging motion of the gun body 1, realizing the automatic swinging and sweeping fire extinguishing driven by water without manual intervention. Step 6: Intermittent pauses Since the width of the rectangular opening 15 is greater than the diameter of the sliding column 16, when the sliding column 16 disengages from the inner wall of the rectangular opening 15 during the revolution of the sliding column 16, the rectangular block 11 loses its driving force. The gun body 1 continues to swing due to inertia, but the speed gradually decreases, forming a short pause. By setting up an idle stroke structure, the gun body 1 forms an intermittent pause interval in the reciprocating swing stroke, which effectively reduces the degree of continuous swing of the gun body 1, shortens the actual stroke of the water flow sweeping left and right, reduces ineffective spraying in the edge area of ​​fire extinguishing, and further improves the efficiency of water resource utilization while ensuring effective coverage of the fire scene. IV. Automatic switching to narrow space mode Step 7: Linkage when slide bar 16 moves to the center position When the sliding column 16 is moved along the transverse groove 14 towards the center of the circular plate 21 by the push plate 20, the connecting teeth 27 on the ring 32 at the lower end of the sliding column 16 gradually mesh with the sawtooth block 18 at the bottom of the cavity 24, driving the ring 32 to rotate. When the ring 32 rotates, it is limited by the arc-shaped opening 28, which drives the push rod 29 to move. The push rod 29 pushes the L-shaped push block 30 to slide in the through-hole 25. The L-shaped push block 30 pushes the arc-shaped support plate 26 out of the arc-shaped placement opening 31, so that it contacts the inner wall of the rectangular opening 15. When the sliding column 16 moves to the center position... The arc-shaped support plate 26 automatically extends and fills the gap between the rectangular opening 15 and the sliding column 16, so that the transmission relationship between the rectangular block 11 and the sliding column 16 is switched from forced push to non-contact or micro-contact state. At this time, even if the disc 5 continues to rotate, the gun body 1 basically maintains the DC state or only produces a very small oscillation, realizing the automatic and smooth switching from the sweeping mode to the DC mode. This not only meets the operational requirements of fixed-point fire extinguishing in narrow spaces, but also eliminates the need for additional manual operation, significantly improving the flexibility and ease of operation of the hydraulic drive mechanism in switching between working conditions.

[0024] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.

Claims

1. A water-driven self-swinging fire monitor, comprising a monitor body (1) and a base (2), wherein the monitor body (1) is rotatably mounted on the base (2), characterized in that, A fixed housing (3) is connected to one side of the base (2). A reducer (7) is installed on the fixed housing (3). A disc (5) is installed on the reducer (7). A drive assembly for driving the disc (5) to rotate is installed inside the fixed housing (3). A protective housing (9) is rotatably fitted on the outside of the gun body (1). The protective housing (9) is rotatably connected to the disc (5). A toothed ring (8) is fixedly fitted inside the protective housing (9) of the gun body (1). A meshing device is provided on one side of the toothed ring (8) that engages with the protective housing. The toothed plate (10) is slidably connected to the body (9). The upper end of the disk (5) is provided with a reciprocating assembly for controlling the reciprocating movement of the toothed plate (10). A cavity (24) is opened in the disk (5). A transverse groove (14) communicating with the cavity (24) is opened in the upper end of the disk (5). A sliding column (16) for driving the reciprocating assembly is slidably arranged in the transverse groove (14). A rotating component for controlling the movement of the sliding column (16) is rotatably arranged in the cavity (24). The adjustment of the position of the sliding column (16) is used to change the stroke of the toothed plate (10).

2. The water-driven self-swinging fire monitor according to claim 1, characterized in that, The fixed housing (3) is fixedly connected to a water inlet pipe (6) and a connecting pipe (4) on the outside. The connecting pipe (4) is fixedly connected to the base (2). The water inlet pipe (6) is connected to an external water supply device. The gun body (1) is rotatably connected to the base (2). The drive assembly includes a rotating rod (13) rotatably connected to the fixed housing (3). Multiple push blades (12) are fixedly installed on the outside of the rotating rod (13). The rotating rod (13) is fixedly connected to one of the rotating shafts of the reducer (7). The other rotating shaft of the reducer (7) is fixedly connected to the disc (5). The housing of the reducer (7) is fixedly installed on the fixed housing (3).

3. A water-driven self-swinging fire monitor according to claim 2, characterized in that, The reciprocating assembly includes a rectangular block (11) that is slidably connected to the protective housing (9). A rectangular opening (15) is provided through the upper end of the rectangular block (11). The upper end of the sliding column (16) is located inside the rectangular opening (15). A sliding opening (23) is provided on one side of the rectangular block (11). The toothed plate (10) is slidably connected to the sliding opening (23).

4. A water-driven self-swinging fire monitor according to claim 3, characterized in that, The width of the rectangular opening (15) is greater than the diameter of the sliding column (16). A telescopic component is installed through the sliding column (16). A connector for controlling the telescopic component is installed at the lower end of the sliding column (16) in the cavity (24).

5. A water-driven self-swinging fire monitor according to claim 4, characterized in that, The rotating component includes a circular plate (21) rotatably connected to the upper wall of the cavity (24). A semi-annular groove (22) is provided through the upper end of the circular plate (21). The semi-annular groove (22) is connected to the transverse groove (14). The lower end of the sliding column (16) is through the semi-annular groove (22) and slides in contact with it. A push plate (20) is fixedly installed on one side of the circular plate (21). A connection port (19) communicating with the cavity (24) is provided on one side of the disc (5). The push plate (20) passes through the connection port (19) and slides in contact with it. A tightening bolt (17) is threadedly connected to the push plate (20) on the outer side of the disc (5) to fix the push plate (20).

6. A water-driven self-swinging fire monitor according to claim 5, characterized in that, The telescopic assembly includes a through-hole (25) that passes through one side of the slide column (16), two L-shaped push blocks (30) are slidably arranged in the through-hole (25), and two arc-shaped placement openings (31) that communicate with the through-hole (25) are opened on the outside of the slide column (16). An arc-shaped support plate (26) that is fixedly connected to the L-shaped push block (30) is placed in the arc-shaped placement opening (31).

7. A water-driven self-swinging fire monitor according to claim 6, characterized in that, The connector includes a ring (32) rotatably sleeved on the lower end of the sliding column (16). The upper end of the ring (32) has two arc-shaped openings (28). Two push rods (29) are slidably arranged in the arc-shaped openings (28). The push rods (29) are fixedly connected to the corresponding L-shaped push blocks (30). Multiple connecting teeth (27) are fixedly installed on the outer side of the ring (32). A sawtooth block (18) that meshes with the connecting teeth (27) is fixedly installed at the bottom of the cavity (24).

8. A water-driven self-swinging fire monitor according to claim 7, characterized in that, One end of the semi-annular groove (22) and the transverse groove (14) are both located at the center of the circular plate (21). When the sliding column (16) slides to the center of the circular plate (21), the arc-shaped support plate (26) extends out and contacts the inner wall of the rectangular opening (15).

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