Fire hose angle adjusting device

Abstract

The application relates to a fire-fighting pipe water spraying angle adjusting device for fire fighting, and belongs to the technical field of fire-fighting equipment. The device comprises a base box and a spraying head. Multi-direction rotating devices are arranged on the proximal sides of the base box and the spraying head. The multi-direction rotating devices comprise a fixed cylinder rotatingly connected to the base box, a connecting frame connected to the fixed cylinder, and the spraying head connected to the connecting frame. A driving device is arranged in the base box. The driving device comprises a first driving part and a second driving part. The first driving part is connected to the fixed cylinder. The second driving part comprises a gear pair connected to the connecting frame. The first driving part and the second driving part are respectively operated to automatically rotate the spraying head to different angles. The application realizes automatic, accurate adjustment and stable keeping of the horizontal and pitching angles of the fire-fighting spraying head through two sets of independent self-locking driving mechanisms, and improves the safety, efficiency and covering precision of fire extinguishing operation.

Description

Technical Field

[0001] This application relates to the technical field of fire-fighting equipment, and in particular to a fire-fighting pipe spray angle adjustment device. Background Technology

[0002] Currently, in firefighting operations, it is often necessary to manually adjust the spray angle of fire hoses or fixed nozzles according to the location of the fire source, the size of the fire, and the on-site environment in order to achieve precise fire extinguishing, cooling, or containment.

[0003] Regarding the aforementioned technologies, the inventors believe that they have the following drawbacks: manual adjustment is inefficient and slow to respond, and poses a threat to the safety of operators in hazardous environments; the simple articulated mechanism lacks stable driving and self-locking capabilities, and is prone to angle deviation under the reaction force of high-pressure water flow, making it impossible to achieve precise and stable control and maintenance of the water spray angle, thus affecting fire extinguishing efficiency. Summary of the Invention

[0004] In order to improve the problems of existing fire pipe spray angle adjustment relying on manual operation and lacking accuracy and stability, this application provides a fire pipe spray angle adjustment device.

[0005] The fire-fighting pipe spray angle adjustment device provided in this application adopts the following technical solution: A fire hose spray angle adjustment device for fire protection includes a base box and a nozzle. A multi-directional rotation device is provided on the adjacent side of the base box and the nozzle. The multi-directional rotation device includes a fixed cylinder rotatably connected to the base box and a connecting frame connected to the fixed cylinder. The nozzle is connected to the connecting frame. The base box is equipped with a driving device, which includes a first driving part and a second driving part. The first driving part is connected to the fixed cylinder, and the second driving part includes a gear pair connected to the connecting frame. By operating the first driving part and the second driving part respectively, the nozzle can automatically rotate to different angles.

[0006] By adopting the above technical solution, the drive unit is integrated inside the base box, resulting in a compact structure that can be remotely or automatically controlled. The first drive unit drives the fixed cylinder to achieve horizontal rotation of the nozzle (i.e., azimuth adjustment), while the second drive unit drives the connecting frame via a gear pair to achieve pitch adjustment of the nozzle. The two drive systems are independently controlled, jointly achieving precise, stable, and lockable angle adjustment of the nozzle in both horizontal and pitch dimensions.

[0007] Preferably, the connecting frame includes a U-shaped rotating frame fixedly connected to the side of the fixed cylinder near the nozzle. A rotating shaft is rotatably connected to the inner wall of the rotating frame, and a fixed frame is fixedly connected to the rotating shaft. The nozzle is fixedly connected to the fixed frame.

[0008] By adopting the above technical solution, the U-shaped rotating frame provides a stable support for the rotating shaft, and the fixed frame facilitates the installation and locking of the fire sprinkler head, forming a reliable pitch and rotation fulcrum that can withstand the reaction force of high-pressure water flow.

[0009] Preferably, the first drive unit includes a first worm gear fixedly connected to the end of the fixed cylinder away from the nozzle, a first worm meshing on the first worm gear, a first limiting frame rotatably connected to both shaft ends of the first worm, the first limiting frame fixedly connected to the inner wall of the base box, a first drive source fixedly connected to the inner wall of the base box, and the output shaft of the first drive source fixedly connected to the first worm.

[0010] By adopting the above technical solution, the first drive source drives the fixed cylinder to rotate through the worm gear pair. The worm gear transmission has the characteristics of large transmission ratio, smooth operation, and reverse self-locking, which can ensure the precise horizontal rotation angle of the nozzle and reliably lock the position after adjustment, effectively resisting the shaking caused by water flow impact.

[0011] Preferably, the second drive unit includes a drive shaft rotatably connected to the inner wall of the fixed cylinder, and the gear pair includes a first bevel gear and a second bevel gear meshing with each other, wherein the first bevel gear is fixedly connected to the outer wall of the rotating shaft, and the second bevel gear is fixedly connected to the end of the drive shaft near the nozzle.

[0012] By adopting the above technical solution, the drive shaft is built into the fixed cylinder, resulting in a compact structure. Through a pair of mutually perpendicular meshing bevel gears, the axial rotational motion of the drive shaft along the fixed cylinder is converted into the lateral rotational motion of the rotating shaft, thereby efficiently and reliably driving the nozzle pitch angle.

[0013] Preferably, a second worm gear is fixedly connected to the end of the drive shaft away from the nozzle, a second worm is meshed on the second worm gear, and a second limiting frame is rotatably connected to both ends of the second worm. The second limiting frame is fixedly connected to the inner wall of the base box, and a second drive source is fixedly connected to the inner wall of the base box. The output shaft of the second drive source is fixedly connected to the second worm.

[0014] By adopting the above technical solution, the second drive source also drives the drive shaft through a worm gear pair. This provides the same precise, stable, and self-locking drive method for adjusting the pitch angle. Both worm gear pairs are securely supported by limit brackets, ensuring transmission reliability and durability under harsh firefighting conditions.

[0015] Preferably, both the first drive source and the second drive source are geared motors with locking function.

[0016] By adopting the above technical solution and using a motor with integrated deceleration and locking functions as the drive source, the required speed and torque can be directly output, eliminating the need for a complex deceleration mechanism inside the housing and further simplifying the overall structure. The motor's locking function, combined with the inherent self-locking characteristics of the worm gear transmission, forms a dual locking mechanism, which greatly enhances the nozzle's holding force and impact resistance stability at any adjustment angle. This ensures that the nozzle's pointing is accurate and reliable under high-pressure and vibration conditions during firefighting operations, and will not deviate due to external forces or vibrations.

[0017] Preferably, the bottom of the base box is provided with a mounting flange.

[0018] By adopting the above technical solution, the entire regulating device can be easily and securely connected to the fire-fighting piping system or a fixed base via an installation flange. This standardized interface design improves the versatility and ease of installation of the device, ensures the structural rigidity and stability of the entire device during operation, effectively transmits and counteracts the reaction force and torque generated by high-pressure water flow, and adapts to different on-site installation environments.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. By integrating the independently controlled first and second drive units into the base box, and cooperating with the multi-directional rotation device, the automatic and precise adjustment of the horizontal azimuth and pitch angle of the fire sprinkler head is realized, replacing manual operation in hazardous environments and improving the efficiency and safety of fire fighting operations. 2. By adopting a transmission method combining worm gear and bevel gear, not only is the transmission of motion and the change of direction realized, but the self-locking characteristics of worm gear transmission are also fully utilized to ensure that the nozzle can be stably maintained after being adjusted to the target angle. It has strong resistance to water flow impact and improves the accuracy and coverage of water spraying for fire extinguishing. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of this application.

[0021] Figure 2 This is regarding the embodiments of this application. Figure 1 Sectional view at BB.

[0022] Figure 3 This is a schematic diagram illustrating the multi-directional rotation device in the embodiments of this application.

[0023] Figure 4 This is a structural diagram of an embodiment of this application.

[0024] Figure 5 This is a schematic diagram illustrating the driving device in the embodiments of this application.

[0025] Figure 6 This is regarding the embodiments of this application. Figure 4 A magnified view at point A.

[0026] Figure 7 This is regarding the embodiments of this application. Figure 1 Sectional view at CC.

[0027] Explanation of reference numerals in the attached drawings: 1. Base box; 2. Nozzle; 3. Multi-directional rotation device; 31. Fixed cylinder; 32. Connecting frame; 321. Rotating frame; 322. Rotating shaft; 323. Fixed frame; 4. Drive device; 41. First drive unit; 411. First worm gear; 412. First worm; 413. First limiting frame; 414. First drive source; 42. Second drive unit; 421. Gear pair; 4211. First bevel gear; 4212. Second bevel gear; 422. Drive shaft; 4221. Second worm gear; 4222. Second worm; 4223. Second limiting frame; 4224. Second drive source; 5. Mounting flange. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0029] This application discloses a fire-fighting pipe spray angle adjustment device, referring to... Figure 1 and Figure 2 The system includes a base box 1, a nozzle 2, a multi-directional rotating device 3, and a drive device 4. The multi-directional rotating device 3 is mounted on the top surface of the base box 1, the nozzle 2 is connected to the multi-directional rotating device 3, and the drive device 4 is located inside the base box 1 and connected to the multi-directional rotating device 3. Therefore, when the drive device 4 drives the multi-directional rotating device 3, it causes the multi-directional rotating device 3 to rotate the nozzle 2 to different angles.

[0030] Specifically, refer to Figure 2 , Figure 3 as well as Figure 4 The multi-directional rotating device 3 includes a fixed cylinder 31 and a connecting frame 32. The fixed cylinder 31 is connected through the middle of the top surface of the base box 1 and is rotatably connected to the base box 1. One end of the fixed cylinder 31 extends into the inner cavity of the base box 1. The connecting frame 32 further includes a rotating frame 321, a rotating shaft 322, and a fixed frame 323. The rotating frame 321 is U-shaped, with its concave surface facing away from the base box 1. The rotating frame 321 is fixedly connected to the end of the fixed cylinder 31 located outside the base box 1. The two ends of the rotating shaft 322 are rotatably connected to the corresponding side walls of the rotating frame 321. The fixed frame 323 is T-shaped, with its vertical part fixedly connected to the middle of the outer wall of the rotating shaft 322. The nozzle 2 is fixedly connected to the side of the fixed frame 323 away from the base box 1.

[0031] The principle of achievement: When the fixed cylinder 31 rotates, the driving force passes through the rotating frame 321, the rotating shaft 322 and the fixed frame 323 in sequence, and finally drives the nozzle 2 to rotate within the horizontal range.

[0032] Reference Figure 4 , Figure 5 as well as Figures 6 to 7 The drive unit 4 mainly consists of two parts, including a first drive unit 41 and a second drive unit 42. The second drive unit 42 includes a gear pair 421, a drive shaft 422, a second worm gear 4221, a second worm 4222, a second limiting frame 4223, and a second drive source 4224. The gear pair 421 further includes a first bevel gear 4211 and a second bevel gear 4212. The drive shaft 422 is rotatably connected to the inner wall of the fixed cylinder 31. One end of the drive shaft 422 passes through the rotating frame 321 and is located inside the rotating frame 321. The other end of the drive shaft 422 extends into the base box 1. The second bevel gear 4212 is fixedly connected to the end of the drive shaft 422 located inside the rotating frame 321. The first bevel gear 4211 is fixedly connected to one side of the outer wall of the rotating shaft 322. The first bevel gear 4211 and the second bevel gear 4212 mesh with each other. The second worm gear 4221 is fixedly connected to one end of the drive shaft 422 located inside the base box 1. The second worm 4222 meshes with one side of the second worm gear 4221. There are two second limit frames 4223, which are rotatably connected to the two shaft ends of the second worm 4222 respectively. The second limit frames 4223 are fixedly connected to the bottom wall of the base box 1. The second drive source 4224 (preferably a geared motor with self-locking function) is fixedly connected to the inner wall of the base box 1 through a motor seat. At the same time, the output shaft of the second drive source 4224 is fixedly connected to the second worm 4222.

[0033] The underlying principle is as follows: After the second drive source 4224 is activated, its output shaft drives the second worm gear 4222 to rotate. Since the second worm gear 4222 meshes with the second worm wheel 4221, it transmits power to the drive shaft 422 fixedly connected to the second worm wheel 4221. The drive shaft 422 rotates accordingly, driving the second bevel gear 4212 fixed at its end to rotate as well. The second bevel gear 4212 meshes with the first bevel gear 4211 fixed on the rotating shaft 322, thereby converting the rotational motion of the drive shaft 422 into the rotation of the rotating shaft 322, ultimately driving the nozzle 2 mounted through the fixing bracket 323 to rotate around the axis of the rotating shaft 322 to pitch or yaw.

[0034] Additionally, the first drive unit 41 includes a first worm gear 411, a first worm 412, a first limiting bracket 413, and a first drive source 414. The first worm gear 411 is fixedly connected to one end of the fixed cylinder 31 located inside the base box 1. The first worm 412 meshes with the side of the first worm gear 411 away from the second worm 4222. There are two first limiting brackets 413, which are rotatably connected to the two shaft ends of the first worm 412, respectively. The first limiting brackets 413 are fixedly connected to the bottom wall of the base box 1. The first drive source 414 (preferably a geared motor with a self-locking function) is fixedly connected to the inner wall of the base box 1 through a motor mount. The output shaft of the first drive source 414 is fixedly connected to the first worm 412.

[0035] The underlying principle is as follows: After the first drive source 414 is started, its output shaft drives the first worm gear 412 to rotate. The first worm gear 412 meshes with the first worm wheel 411, transmitting the rotational motion to the fixed cylinder 31, which is fixedly connected to the first worm wheel 411. The rotation of the fixed cylinder 31 will cause the entire connecting frame 32 and the nozzle 2 connected to it to rotate horizontally around the axis of the fixed cylinder 31.

[0036] Finally, a controller (preferably a PLC or a dedicated motion controller) is fixedly connected to the inner wall of the base box 1. The controller is electrically connected to the first drive source 414 and the second drive source 4224 respectively. This controller is the core control unit and can receive various forms of instructions, such as manual operation signals from the local control box, wireless signals from a remote wireless remote controller, or automatic trigger signals linked with the automatic fire alarm system and fire monitor positioning system. The controller can pre-store various spraying programs, such as fixed-point spraying, fan-shaped scanning spraying, and stepped lifting spraying. In addition, angle sensors (preferably a polarity encoder) are installed on the fixed cylinder 31 and / or the rotating shaft 322 to detect the horizontal rotation angle and pitch angle in real time and feed them back to the controller, forming a closed-loop control system to accurately correct position errors. The controller also has comprehensive protection logic, including motor overcurrent and overheat protection, mechanical limit switch protection, and software travel limit protection to ensure safe operation of the device. When it is necessary to adjust the spraying direction of the nozzle 2, the controller activates the corresponding output source (first drive source 414 or second drive source 4224) according to the instruction. If the horizontal angle needs to be adjusted, the first drive source 414 operates, driving the fixed cylinder 31 to rotate horizontally via the first worm gear 412 and the first worm wheel 411, thus steering the entire upper mechanism. If the pitch angle needs to be adjusted, the second drive source 4224 operates, transmitting power via the second worm gear 4222, the second worm wheel 4221, and the drive shaft 422. This power is then directed and driven by the meshing second bevel gear 4212 and the first bevel gear 4211, propelling the rotating shaft 322 and the nozzle 2 in pitch motion. These two movements can be performed independently or coordinated synchronously by the controller, thereby achieving precise, automatic positioning and reliable locking of the nozzle 2 at any angle in three-dimensional space.

[0037] It should be noted that, referring to Figure 7 The base box 1 is typically made of cast iron or welded steel plate with anti-corrosion treatment. A mounting flange 5 is fixedly connected to the bottom of the base box 1 for secure connection to the fire sprinkler network or fixed base, ensuring it can withstand the reaction force and impact vibration of high-pressure water flow. All transmission components have a well-designed lubrication system within the box. The entire device highly integrates power, transmission, and control within the protective box, achieving automation, intelligence, and high reliability in fire sprinkler angle adjustment, significantly improving the efficiency and safety of firefighting operations.

[0038] The implementation principle of a fire-fighting pipe spray angle adjustment device according to an embodiment of this application is as follows: The controller receives external commands (such as remote control signals or preset programs) and can independently or synchronously control the start, stop, direction, and speed of the first drive source 414 and the second drive source 4224 (both are geared motors with self-locking function). The power output from the motor is reduced and reversed through two sets of worm gear pairs. One path drives the fixed cylinder 31 to achieve horizontal rotation, while the other path drives the rotating shaft 322 to achieve pitch rotation through the gear pair 421.

[0039] When the horizontal orientation of the nozzle 2 needs to be adjusted, the controller activates the first drive source 414. The output shaft of the first drive source 414 drives the first worm gear 412 to rotate, and the first worm wheel 411 meshing with it rotates accordingly. Since the first worm wheel 411 is fixedly connected to the end of the fixed cylinder 31, the fixed cylinder 31 will rotate around its own axis on the base box 1. The rotation of the fixed cylinder 31 drives the entire connecting frame 32 (including the rotating shaft 322 and the fixed frame 323) and the nozzle 2 fixed on it to rotate horizontally through the U-shaped rotating frame 321. During this process, the large transmission ratio of the worm gear pair ensures smooth and precise rotation. Its inherent self-locking characteristic, combined with the locking function of the motor, can immediately lock the nozzle 2 firmly at the target azimuth angle after rotation stops, resisting water flow impact.

[0040] When the spray elevation angle of nozzle 2 needs to be adjusted, the controller activates the second drive source 4224. The output shaft of the second drive source 4224 drives the second worm gear 4222 to rotate, which in turn drives the second worm wheel 4221 meshing with it to rotate. The second worm wheel 4221 is fixed to one end of the drive shaft 422, thereby driving the drive shaft 422 to rotate inside the fixed cylinder 31. A second bevel gear 4212 is fixed to one end of the drive shaft 422 located inside the rotating frame 321, and its rotation drives the first bevel gear 4211 meshing with it perpendicularly to rotate. Since the first bevel gear 4211 is fixed on the rotating shaft 322, the rotating shaft 322 rotates accordingly. The rotation of the rotating shaft 322 drives the fixed frame 323 and nozzle 2 on it to swing around the axis of the rotating shaft 322 to adjust the pitch angle. Similarly, the worm gear pair in this path forms a double lock with the motor, ensuring stability and reliability after the pitch angle is adjusted.

[0041] By programming and controlling the first drive unit 41 and the second drive unit 42 through the controller, the sprinkler head 2 can be quickly and accurately positioned to any desired angle in the horizontal and vertical two-dimensional space. The entire drive system is built into the base box 1, with a compact structure and good protection. The bottom mounting flange 5 facilitates overall installation and fixation, and withstands working reaction forces. This device realizes the upgrade of fire sprinkler angle from manual to automatic, with precise adjustment and secure locking, significantly improving the efficiency and adaptability of fire fighting operations.

[0042] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

[0043] In addition, all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The specific implementation of this disclosure omits detailed descriptions of known functions and known components. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

Claims

1. A fire hose spray angle adjustment device for fire fighting, comprising a base box (1) and a nozzle (2), characterized in that: A multi-directional rotating device (3) is provided on the adjacent side of the base box (1) and the nozzle (2). The multi-directional rotating device (3) includes a fixed cylinder (31) rotatably connected to the base box (1) and a connecting frame (32) connected to the fixed cylinder (31). The nozzle (2) is connected to the connecting frame (32). The base box (1) is provided with a drive device (4), which includes a first drive part (41) and a second drive part (42). The first drive part (41) is connected to the fixed cylinder (31), and the second drive part (42) includes a gear pair (421) connected to the connecting frame (32). The first drive part (41) and the second drive part (42) operate separately, so that the nozzle (2) automatically rotates to different angles.

2. The fire hose spray angle adjustment device for fire fighting as described in claim 1, characterized in that: The connecting frame (32) includes a U-shaped rotating frame (321) fixedly connected to the fixed cylinder (31) near the nozzle (2). A rotating shaft (322) is rotatably connected to the inner wall of the rotating frame (321). A fixed frame (323) is fixedly connected to the rotating shaft (322). The nozzle (2) is fixedly connected to the fixed frame (323).

3. The fire hose spray angle adjustment device for fire fighting as described in claim 1, characterized in that: The first drive unit (41) includes a first worm gear (411) fixedly connected to the end of the fixed cylinder (31) away from the nozzle (2). A first worm (412) is meshed on the first worm gear (411). A first limit frame (413) is rotatably connected to both shaft ends of the first worm (412). The first limit frame (413) is fixedly connected to the inner wall of the base box (1). A first drive source (414) is fixedly connected to the inner wall of the base box (1). The output shaft of the first drive source (414) is fixedly connected to the first worm (412).

4. A fire-fighting pipe spray angle adjustment device according to claim 3, characterized in that... The second drive unit (42) includes a drive shaft (422) rotatably connected to the inner wall of the fixed cylinder (31). The gear pair (421) includes a first bevel gear (4211) and a second bevel gear (4212) meshing with each other. The first bevel gear (4211) is fixedly connected to the outer wall of the rotating shaft (322), and the second bevel gear (4212) is fixedly connected to one end of the drive shaft (422) near the nozzle (2).

5. A fire-fighting pipe spray angle adjustment device according to claim 4, characterized in that... The drive shaft (422) is fixedly connected to a second worm gear (4221) at the end away from the nozzle (2). A second worm (4222) meshes with the second worm gear (4221). A second limit frame (4223) is rotatably connected to both ends of the second worm (4222). The second limit frame (4223) is fixedly connected to the inner wall of the base box (1). A second drive source (4224) is fixedly connected to the inner wall of the base box (1). The output shaft of the second drive source (4224) is fixedly connected to the second worm (4222).

6. A fire-fighting pipe spray angle adjustment device according to claim 5, characterized in that: The first drive source (414) and the second drive source (4224) are both geared motors with locking function.

7. A fire-fighting pipe spray angle adjustment device according to claim 1, characterized in that: The base box (1) is provided with a mounting flange (5) at its bottom.

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