A fire hose reeling device

Abstract

This utility model relates to the field of UAV firefighting technology, specifically a fire hose deployment and retraction device, including a mounting frame, a winding structure, a release structure, and a PLC controller. The mounting frame consists of a frame body, a baffle, and a bottom stop block, forming a hose winding space; the winding structure achieves automatic hose winding through a first rotating shaft and a first driving component; the release structure uses an independent clamping component and a second driving component to control the hose release end, separating it from the winding action; the PLC controller is integrated into the frame body, coordinating the operation of the first and second driving components in real time. This utility model eliminates the hose jamming problem caused by speed differences in traditional single structures by physically separating the winding and release functions; simultaneously, the intelligent control system of the PLC controller dynamically matches the hose release linear speed to changes in the UAV's flight speed, ensuring reliable deployment.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) firefighting technology, specifically a fire hose reeling and deployment device. Background Technology

[0002] Forest and hill fires occur frequently around the world, causing immense harm to people's lives and property. Due to the complex geographical environment of forests, firefighters often cannot reach the fire scene in a timely manner. Therefore, when forest fires occur, helicopters or drones are frequently seen dropping water into the fire scene using various methods to extinguish them.

[0003] For example, the existing invention patent CN115177890A proposes a fire hose laying mechanism and method. This invention uses a drive motor to rotate a shaft, which in turn drives a winding reel to actively release the fire hose. The drone flies at low altitude, the winding reel rotates at a constant speed, and the hose is smoothly laid to the ground along the planned route.

[0004] As described in the above technical solution, the water hose is released by driving the rotating shaft to rotate via a drive motor. However, the above device has the problem of water hose jamming during the release process. Since the water hose is rotated by the rotating shaft in the middle during the release process, when the rotating shaft speed is greater than the water hose release speed, the water hose is easily jammed into the winding reel, thus affecting the normal release of the water hose. Utility Model Content

[0005] In view of the technical problems in the prior art, the present invention provides a fire hose reeling device, which aims to solve the problem that the fire hose is prone to getting stuck in the winding reel during the release process.

[0006] A fire hose reeling device includes a mounting frame, a winding structure, a release structure, and a PLC controller, wherein...

[0007] The mounting frame includes a frame body and baffles. The bottom of the frame body has two symmetrical sides with downward extending blocks. The baffles include two baffles, which are located inside the two blocks and are fixedly connected to the corresponding blocks. A space for winding the water hose is formed between the two baffles.

[0008] The winding structure includes a first rotating shaft and a first driving member. The first rotating shaft is rotatably horizontally arranged between two baffles. The first driving member is disposed on the frame and is drivenly connected to the first rotating shaft for driving the water hose to wind up.

[0009] The release structure includes a clamping member and a second driving member. The clamping member is rotatably disposed at the bottom of two blocks and is used to clamp the release end of the hose. The second driving member is disposed on the outer wall of the block and is drivenly connected to the clamping member to control the release of the hose.

[0010] The PLC controller is located inside the frame and is electrically connected to the first drive component and the second drive component, respectively, and is used to control the winding and releasing actions.

[0011] Optionally, the clamping member includes a second rotating shaft and a clamping roller, wherein,

[0012] The second rotating shaft comprises two parallel shafts, which are rotatably positioned horizontally between the two stops;

[0013] The clamping rollers include two rollers, which are respectively sleeved on the corresponding second rotating shafts and are used to clamp the water hose release end.

[0014] Optionally, the clamping roller is made of a flexible material.

[0015] Optionally, the release structure further includes a mounting block and a quick-release mechanism, wherein,

[0016] The mounting block is located at the bottom of the stop block away from the second driving component. The mounting block is attached to the outer side of the corresponding baffle. The second rotating shaft is rotatably inserted into the mounting block at one end facing the mounting block.

[0017] The quick-release mechanism is located on the baffle and is used to selectively fix the mounting block to the baffle or detach it from the baffle.

[0018] Optionally, the quick-release mechanism includes a mounting screw and a nut, wherein,

[0019] The mounting screw is fixedly installed at the corresponding mounting block of the baffle and is perpendicular to the baffle for inserting the mounting block;

[0020] The ram's horn nut is threaded onto the mounting screw and is used to fix or release the mounting block.

[0021] Optionally, the second driving component includes a first motor, a first driven pulley, and a first belt, wherein,

[0022] The first motor is fixed to the outside of one of the blocks and is electrically connected to the PLC controller;

[0023] The first driven wheel is located on one side of one of the second rotating shafts corresponding to the first motor, and is fixedly connected to the corresponding second rotating shaft;

[0024] The first belt is connected to the output shaft of the first motor and the first driven pulley, and is used by the first motor to drive the second rotating shaft to rotate.

[0025] Optionally, the first driving component includes a second motor, a second driven pulley, and a second belt, wherein,

[0026] The second motor is fixed inside the frame and electrically connected to the PLC controller;

[0027] The second driven wheel is located on the side of the first rotating shaft corresponding to the output shaft of the second motor, and is fixedly connected to the corresponding first rotating shaft;

[0028] The second belt connects the output shaft of the second motor to the second driven pulley, and is used by the second motor to drive the first rotating shaft to rotate.

[0029] Optionally, the top of the frame is provided with an installation cavity, and the PLC controller is located in the installation cavity.

[0030] Optionally, the winding structure further includes a limiting rod, which is disposed on the surface of the first rotating shaft and protrudes from the surface of the first rotating shaft to form a locking part, used to fix the initial position of the water hose end during winding.

[0031] Optionally, the surfaces of the two baffles are hollowed out.

[0032] Compared with the prior art, the fire hose reeling device provided by this utility model has the following advantages:

[0033] (1) By setting up the winding structure and the release structure, the winding and release actions are separated. The winding shaft only needs to wind up, and the release end is pulled and rotated by an independent clamping part. This avoids the problem of jamming caused by the speed difference when releasing the water hose because the same structure is used for winding and releasing the water hose. At the same time, the setting of the PLC controller can control the rotation speed of the release structure in real time when the UAV flight speed changes, so that the water hose release linear speed matches the UAV flight speed and ensures the reliability of the water hose laying process.

[0034] (2) By clamping the release end of the hose with double clamping rollers, integrating the bearing seat assembly that can be quickly unscrewed by hand and belt drive into the release end, the hose can maintain a constant linear speed and tension while being independently pulled and rotated for release. This not only eliminates jamming and backwinding caused by the speed difference of the winding shaft, but also utilizes the slippage characteristics of the belt to achieve overload protection. The tool-free quick-release of the horn nut greatly shortens the hose installation, disassembly and maintenance time, significantly improving the continuity and reliability of UAV forest fire fighting operations. At the same time, the winding and release are powered by independent motors, which do not interfere with each other, further improving the speed matching accuracy. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of a fire hose reeling device according to the present invention;

[0036] Figure 2 This is a schematic diagram of the quick-release structure of a fire hose reeling device according to the present invention;

[0037] Figure 3 This is a schematic diagram of the release structure of a fire hose reeling device according to the present invention;

[0038] Figure 4 This is a side view of a fire hose reeling and unloading device according to the present invention.

[0039] In the diagram: 1. Mounting frame; 101. Stop block; 102. Mounting cavity; 11. Frame body; 12. Baffle; 2. Winding structure; 21. First rotating shaft; 22. First driving component; 221. Second motor; 222. Second driven wheel; 223. Second belt; 23. Limiting rod; 3. Release structure; 31. Clamping component; 311. Second rotating shaft; 312. Clamping roller; 32. Second driving component; 321. First motor; 322. First driven wheel; 323. First belt; 33. Mounting block; 34. Quick release mechanism; 341. Mounting screw; 342. Claw nut; 4. PLC controller. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Please see Figure 1-4 The present application proposes a fire hose reeling and unloading device, which includes a mounting frame 1, a winding structure 2, a release structure 3 and a PLC controller 4.

[0042] like Figure 1 As shown, the mounting frame 1 consists of a frame body 11 and symmetrically extending downward stop blocks 101. Two baffles 12 are fixed inside the stop blocks 101, forming a space for winding the water hose between them. The surfaces of the two baffles 12 are hollowed out, which reduces the overall weight and facilitates observation of the water hose winding state. The winding structure 2 includes a first rotating shaft 21 and its first driving member 22. The first rotating shaft 21 is horizontally arranged between the baffles 12 and is driven to rotate by the first driving member 22. The release structure 3 includes a clamping member 31 and its second driving member 32. The clamping member 31 is rotatably arranged at the bottom of the two stop blocks 101 to clamp the water hose release end. The second driving member 32 is arranged on the outer wall of the stop blocks 101 to drive the clamping member 31 to rotate. The PLC controller 4 is placed inside the frame body 11 and electrically connected to the two driving members to control the winding and release movements respectively.

[0043] Specifically, in the scenario of using drones for forest fire fighting, the top of the device's frame 11 is fixed to the bottom of the drone. The drone then transports the device and lays the hose. The winding and releasing parts of the device are completely separated. The winding structure 2 is only responsible for winding the hose, while the release action is completed by the clamping part 31 of the release structure 3 in conjunction with the second drive part 32. The two drive systems do not interfere with each other, avoiding the situation where the winding and releasing actions are combined into one winding structure 2, which could cause jamming during the hose release process. At the same time, a PLC controller 4 is set up. When the drone's flight speed changes or the wind force changes suddenly, the PLC controller 4 adjusts the rotation speed of the second drive part 32 in real time, so that the linear speed of the hose pulled by the clamping part 31 is consistent with the drone's flight speed, ensuring the reliability of the hose laying process.

[0044] In some embodiments, such as Figure 2-3 As shown, the clamping member 31 includes a second rotating shaft 311 and a clamping roller 312. The second rotating shaft 311 includes two parallel shafts, which are rotatably positioned horizontally between two stops 101. The clamping roller 312 includes two rollers, which are respectively sleeved on the corresponding second rotating shaft 311. The clamping roller 312 is made of a flexible material (such as polyurethane or rubber) and is used to clamp the release end of the water hose. The second driving member 32 includes a first motor 321, a first driven wheel 322 and a first belt 323. The first motor 321 is fixed to the outside of one of the stops 101 and is electrically connected to the PLC controller 4. The first driven wheel 322 is located on one side of one of the second rotating shafts 311 corresponding to the first motor 321 and is fixedly connected to the corresponding second rotating shaft 311. The first belt 323 is connected to the output shaft of the first motor 321 and the first driven wheel 322, and is used to drive the second rotating shaft 311 to rotate.

[0045] Specifically, two parallel horizontally placed second rotating shafts 311 and their paired clamping rollers 312 clamp the hose release end from both the top and bottom sides. The flexible clamping rollers 312 can adapt to changes in hose thickness, forming a stable and uniform clamping force, which avoids damage to the hose caused by single-point compression and ensures reliable transmission of traction force. The first motor 321 drives the first driven wheel 322 via the first belt 323, so that the two clamping rollers 312 can rotate synchronously while clamping the hose, realizing active and uniform release of the hose. This avoids the hose jamming phenomenon that occurs when releasing the hose through the winding structure 2. When the release structure 3 is working, the winding structure is in a driven state and will not cause interference. At the same time, the PLC controller 4 precisely adjusts the speed of the first motor 321 according to the real-time flight speed of the UAV. The flexible characteristics of the belt drive allow controllable slippage when the sudden tension is too large, which protects the motor and prevents the hose from being torn off instantly. This allows the UAV to lay hose smoothly, continuously and reliably in complex forest terrain.

[0046] In some embodiments, such as Figure 2-3 As shown, the release structure 3 also includes a bearing housing assembly, which includes a mounting block 33 and a quick-release mechanism 34. The mounting block 33 is located at the bottom of the stop 101 away from the second drive member 32. The mounting block 33 is attached to the outer side of the corresponding baffle 12. The second rotating shaft 311 is rotatably inserted into the mounting block 33 at one end facing the mounting block 33. The quick-release mechanism 34 includes a mounting screw 341 and a nut 342. The mounting screw 341 is fixedly located at the baffle 12 corresponding to the mounting block 33 and is set perpendicular to the baffle 12 for inserting the mounting block 33. The nut 342 is threadedly connected to the mounting screw 341 for fixing or releasing the mounting block 33.

[0047] Specifically, the mounting block 33 provides stable cantilever support for the second rotating shaft 311, ensuring that the clamping roller 312 maintains coaxiality and low vibration during high-speed rotation. When it is necessary to replace or install the hose, the operator can loosen the nut 342 by hand and pull the mounting block 33 outward along the mounting screw 341. The entire clamping roller 312 assembly will then flip outward, and the hose release end can be removed or reinstalled without obstruction. The entire process requires no tools and is convenient and quick. This not only significantly shortens the maintenance time in the field and improves the continuous deployment capability of UAVs for forest fire fighting, but also ensures that the compact combination of the mounting screw 341 and the nut 342 occupies very little space, thus ensuring the overall miniaturization and lightweight of the device and adapting to the stringent space and weight restrictions of UAV mounting.

[0048] In some embodiments, such as Figure 1 As shown, the first driving component 22 includes a second motor 221, a second driven wheel 222, and a second belt 223. The second motor 221 is fixed inside the frame 11 and electrically connected to the PLC controller 4. The second driven wheel 222 is located on one side of one of the second rotating shafts 311 corresponding to the output shaft of the second motor 221 and is fixedly connected to the corresponding first rotating shaft 21. The second belt 223 connects the output shaft of the second motor 221 and the first driven wheel 322, and is used by the second motor 221 to drive the second rotating shaft 311 to rotate.

[0049] Specifically, the first rotating shaft 21 is driven separately by the second motor 221, so that it works completely separately from the release structure 3. During the winding operation, the release structure 3 is in a driven state, so that it will not cause interference during the winding operation. At the same time, during the winding operation, the release structure 3 can also play a guiding role for the water hose, improving the winding efficiency of the water hose.

[0050] In some embodiments, such as Figure 1As shown, the top of the frame 11 has an installation cavity 102, and the PLC controller 4 is located in the installation cavity 102. Integrating the PLC controller 4 into the installation cavity 102 at the top of the frame 11 effectively protects the internal control structure when the drone is laying water hoses in the jungle, ensuring the reliability of the water hose laying process.

[0051] In some embodiments, such as Figure 4 As shown, the winding structure 2 also includes a limiting rod 23, which is disposed on the surface of the first rotating shaft 21 and protrudes from the surface of the rotating shaft to form a locking part, used to fix the initial position of the water hose end during winding.

[0052] Specifically, a limiting rod 23 is provided on the surface of the first rotating shaft 21. When the hose is being wound up, the operator only needs to insert the head end into the locking part to start the winding, ensuring that the hose is neatly and tightly wound on the first rotating shaft 21, avoiding subsequent release deviation or knotting caused by looseness, and improving the reliability of the system for repeated use.

[0053] Workflow: Before operation, the operator inserts the fire hose end into the locking part of the limiting rod 23 of the first rotating shaft 21, starts the second motor 221 to drive the winding shaft to pre-wind several times via the second belt 223 to secure it; then, the release end is inserted between the two clamping rollers 312, and the nut 342 is tightened by hand to lock the mounting block 33, ensuring the second rotating shaft 311 is stable and coaxial. After the drone takes off, the PLC synchronously commands the first motor 321 to drive the clamping rollers 312 to rotate at a uniform speed via the first belt 323 according to the real-time flight speed, so that the fire hose is released smoothly at a linear speed matching the drone. After delivery, the operator removes the mounting block 33 at the destination and takes out the fire hose end, thus completing the fire hose laying.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire hose reeling device, characterized in that, It includes a mounting bracket (1), a winding structure (2), a release structure (3), and a PLC controller (4), wherein, The mounting frame (1) includes a frame (11) and baffles (12). The bottom of the frame (11) has two symmetrical sides with downward extending blocks (101). The baffles (12) include two baffles, which are located inside the two blocks (101) and are fixedly connected to the corresponding blocks (101). A space for winding the water hose is formed between the two baffles (12). The winding structure (2) includes a first rotating shaft (21) and a first driving member (22). The first rotating shaft (21) is rotatably horizontally arranged between two baffles (12). The first driving member (22) is arranged on the frame (11) and is drivenly connected to the first rotating shaft (21) for driving the water hose to wind up. The release structure (3) includes a clamping member (31) and a second driving member (32). The clamping member (31) is rotatably disposed at the bottom of two blocks (101) for clamping the release end of the water hose. The second driving member (32) is disposed on the outer wall of the block (101) and is drivenly connected to the clamping member (31) for controlling the release of the water hose. The PLC controller (4) is located inside the frame (11) and is electrically connected to the first drive unit (22) and the second drive unit (32) respectively, and is used to control the winding and releasing actions.

2. The fire hose reeling device according to claim 1, characterized in that, The clamping member (31) includes a second rotating shaft (311) and a clamping roller (312), wherein, The second rotating shaft (311) includes two parallel shafts, which are rotatably positioned horizontally between the two stops (101); The clamping rollers (312) include two rollers, which are respectively sleeved on the corresponding second rotating shafts (311) for clamping the water hose release end.

3. A fire hose reeling device according to claim 2, characterized in that, The clamping roller (312) is made of a flexible material.

4. A fire hose reeling device according to claim 2, characterized in that, The release structure (3) further includes a mounting block (33) and a quick-release mechanism (34), wherein, The mounting block (33) is located at the bottom of the stop (101) away from the second drive member (32). The mounting block (33) is attached to the outside of the corresponding baffle (12). The second rotating shaft (311) is rotatably inserted into the mounting block (33) at one end facing the mounting block (33). The quick-release mechanism (34) is provided on the baffle (12) for selectively fixing the mounting block (33) to the baffle (12) or separating it from the baffle (12).

5. A fire hose reeling device according to claim 4, characterized in that, The quick-release mechanism (34) includes a mounting screw (341) and a nut (342), wherein, The mounting screw (341) is fixedly installed on the baffle (12) at the corresponding mounting block (33) and is set perpendicular to the baffle (12) for the insertion of the mounting block (33); The ram's horn nut (342) is threaded onto the mounting screw (341) and is used to fix or release the mounting block (33).

6. A fire hose reeling device according to any one of claims 2-5, characterized in that, The second driving component (32) includes a first motor (321), a first driven pulley (322), and a first belt (323), wherein, The first motor (321) is fixed to the outside of one of the stops (101) and is electrically connected to the PLC controller (4); The first driven wheel (322) is located on one side of one of the second rotating shafts (311) corresponding to the first motor (321), and is fixedly connected to the corresponding second rotating shaft (311); The first belt (323) is connected to the output shaft of the first motor (321) and the first driven wheel (322) for the first motor (321) to drive the second rotating shaft (311) to rotate.

7. A fire hose reeling device according to claim 1, characterized in that, The first driving component (22) includes a second motor (221), a second driven pulley (222), and a second belt (223), wherein, The second motor (221) is fixed inside the frame (11) and electrically connected to the PLC controller (4); The second driven wheel (222) is located on one side of the first rotating shaft (21) corresponding to the output shaft of the second motor (221), and is fixedly connected to the corresponding first rotating shaft (21); The second belt (223) is connected to the output shaft of the second motor (221) and the second driven pulley (222), and is used by the second motor (221) to drive the first rotating shaft (21) to rotate.

8. A fire hose reeling device according to claim 1, characterized in that, The top of the frame (11) has an installation cavity (102), and the PLC controller (4) is located in the installation cavity (102).

9. A fire hose reeling device according to claim 1, characterized in that, The winding structure (2) also includes a limiting rod (23), which is located on the surface of the first rotating shaft (21) and protrudes from the surface of the first rotating shaft (21) to form a snap-fit ​​part, used to fix the initial position of the water hose end during winding.

10. A fire hose reeling device according to claim 1, characterized in that, The surfaces of the two baffles (12) are hollowed out.

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