A mobile support structure for a forest fire fighting backpack water cannon

Abstract

This utility model discloses a mobile support structure for a backpack water cannon used in forest fire fighting, including a water tank, an aerosol sprayer, an air cylinder, and a support frame. Support rods are used to fix the water tank. The support frame includes side panels symmetrically arranged on the surface of the water tank, a first support rod at the front of the side panels, and a second support rod at the rear of the side panels. A fixing rod is installed at the bottom of the second support rod, and a rotating shaft is installed at the bottom of the fixing rod. Locking mechanisms are provided at both ends of the rotating shaft to limit its movement. By incorporating the fixing rod, rotating shaft, and telescopic rod, this utility model allows for a higher support structure at the bottom of the entire device, conforming to the user's height. This provides ground-level support for the user on flat surfaces, when standing for extended periods, and when the water tank is full during firefighting, reducing the user's continuous physical exertion due to the weight of the entire device.

Description

Technical Field

[0001] This utility model relates to the field of fire protection, and in particular to a mobile support structure for a backpack water cannon used for forest fire fighting. Background Technology

[0002] High-pressure backpack fire extinguishers (water cannons) are a type of efficient and portable firefighting equipment. They utilize high pressure to atomize water into fine particles, forming a large-area mist-like water curtain that rapidly absorbs heat and cools the flames, effectively controlling and extinguishing fires. Their main feature is their backpack design, which greatly improves the mobility and flexibility of firefighters. This makes the fire extinguishing equipment lightweight and easy to carry, especially in complex terrain and long-distance travel situations, allowing firefighters to quickly approach the fire source and promptly begin firefighting operations. It typically consists of an aerosol sprayer (commonly known as a water gun), a high-pressure gas cylinder, a water tank, a pressure reducing valve, and various hoses and quick-connect fittings, with the spraying action achieved by the aerosol sprayer.

[0003] However, while backpack-style equipment offers high flexibility, carrying it for extended periods can still lead to significant physical exertion for the user. This is especially true when standing for long periods to extinguish fires at fire sites or when traversing long, flat terrain. Continuing to perform backpack-style actions in such situations results in pointless energy consumption. Therefore, a structure that can adapt to different usage environments is needed to reduce the user's physical exertion. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a mobile support structure for a backpack water cannon for forest fire fighting. The main solution is to address the problem of excessive physical exertion caused by the need for users to carry backpack water cannons for long periods of time.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model relates to a mobile support structure for a backpack water cannon used in forest fire fighting, comprising a water tank, an aerosol sprayer, an air cylinder, and a support frame. The support frame is used to fix the water tank. The support frame includes side panels symmetrically arranged on the surface of the water tank, a first support rod at the front of the side panels, and a second support rod at the rear of the side panels. A fixing rod is installed at the bottom of the second support rod, and a rotating shaft is installed at the bottom of the fixing rod. Locking mechanisms are provided at both ends of the rotating shaft to limit its movement. A telescopic rod is provided at the bottom of the rotating shaft, and an overlapping plate and a fastening mechanism are provided on the surface of the telescopic rod. The overlapping plate is used to fix the aerosol sprayer. A fastening groove is provided at the top of the first support rod, and the fastening mechanism is used to limit the length of the telescopic rod. A roller is installed at the bottom of the telescopic rod.

[0006] Preferably, the telescopic rod includes a retractable rod and a connecting rod. The retractable rod extends axially inside the connecting rod. The fastening mechanism is located on the front surface of the connecting rod. The fastening mechanism includes a rotating shaft and a fastening plate. The top of the fastening plate is hook-shaped. The surface of the retractable rod is provided with a clamping groove. The inside of the clamping groove is connected to the end of the fastening plate by a beaded snap fastener.

[0007] Preferably, the end of the fastening plate is embedded in the inner side of the fastening groove, and the overlapping plate is located at the outer edge of the sleeve rod.

[0008] Preferably, the bottom of the second support rod is fixedly connected to the fixed rod, and the fixed rod and the telescopic rod are rotatably connected via a rotating shaft.

[0009] Preferably, the rollers are omnidirectional wheels, and the rollers are arranged in pairs at the bottom of the telescopic rod, with the fixed rods on both sides connected by a rotating shaft.

[0010] Preferably, the locking mechanism includes an external spline and an internal spline. The external spline corresponds to the bottom of the fixed rod and is inserted into the end surface of the rotating shaft. The end of the rotating shaft extends to the outside of the fixed rod and is inserted into the locking mechanism. The locking mechanism extends and retracts along the axial direction of the rotating shaft to lock or unlock the rotating shaft.

[0011] Preferably, a pressure reducing valve is installed at the bottom of the gas storage cylinder, the axial extension line of the overlapping plate always intersects with the vertical extension line of the pressure reducing valve, and an insertion port is provided on the side of the overlapping plate away from the roller.

[0012] Preferably, the axial extension line of the overlapping plate is located on the middle side of the pair of rollers, and the overlapping plate, the fastening mechanism and the clamping groove are all located on the same side.

[0013] Preferably, a sliding rod is axially connected between the locking mechanism and the rotating shaft, and the sliding rod passes through the middle of the locking mechanism, and the locking mechanism slides back and forth on the surface of the sliding rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, by incorporating a fixed rod, a rotating shaft, and a telescopic rod, creates a high supporting structure at the bottom of the entire device, conforming to the user's height. This provides ground-level support for users on flat surfaces, when standing for extended periods, or when the water tank is full during firefighting, reducing the user's physical exertion due to the weight of the entire device.

[0015] This utility model is further designed with a retractable usage structure, that is, the aerosol sprayer is placed through the overlapping plate. When most of the water in the tank has been used up, the support structure can be retracted and the aerosol sprayer can be inserted into the socket. Based on the pressure relief valve at the rear, the user can use it by simply pulling the trigger. This allows the user to change to another position when holding the aerosol sprayer for a long time, and makes it easy for the user to leave quickly when the water in the tank is used up. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a left view of the overall structure of this utility model; Figure 4 This is a folding diagram of the telescopic rod structure of this utility model; Figure 5 This is a schematic diagram of the locking mechanism of this utility model; In the diagram: 1. Water tank; 2. Sliding rod; 3. Gas cylinder; 4. Support frame; 5. Side panel; 6. First support rod; 7. Second support rod; 8. Fixed rod; 9. Rotating shaft; 10. Locking mechanism; 11. Telescopic rod; 12. Overlap plate; 13. Fastening mechanism; 14. Fastening groove; 15. Roller; 16. Retractable rod; 17. Sleeve rod; 18. Rotating shaft; 19. Fastening plate; 20. Clamping groove; 21. External spline; 22. Internal spline; 23. Pressure reducing valve; 24. Socket. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] In the attached diagram, all identical reference numerals refer to the same components.

[0019] Example 1 like Figure 1-5As shown, this utility model provides a mobile support structure for a backpack water cannon for forest fire fighting, including a water tank 1, an aerosol sprayer, an air cylinder 3, and a support frame 4. The support frame 4 is used to fix the water tank 1. Its overall structure is a backpack pulse air pressure spray water gun, mainly composed of an aerosol sprayer (commonly known as a water gun), a high-pressure air cylinder 3, a water tank 1, a pressure reducing valve 23, and various hoses and quick-connect couplings. It is usually carried directly on the back of the worker for mobile use and has high adaptability to terrain.

[0020] However, when facing relatively flat areas and areas requiring prolonged standing, the heavy weight of the water tank 1 and gas cylinder 3 can cause exhaustion for workers carrying such heavy equipment for extended periods. Therefore, auxiliary support is needed to facilitate long-term operation in the face of fire. The support frame 4 includes side panels 5 symmetrically arranged on the surface of the water tank 1, a first support rod 6 at the front of the side panel 5, and a second support rod 7 at the rear of the side panel 5. A fixing rod 8 is installed at the bottom of the second support rod 7, and a rotating shaft 9 is installed at the bottom of the fixing rod 8. Locking mechanisms 10 are provided at both ends of the rotating shaft 9 to limit the rotation shaft 9. A telescopic rod 11 is provided at the bottom of the rotating shaft 9. An overlapping plate 12 and a fastening mechanism 13 are provided on the surface of the telescopic rod 11. The overlapping plate 12 is used to fix the aerosol sprayer. A fastening groove 14 is provided at the top of the first support rod 6. The fastening mechanism 13 is used to limit the length of the telescopic rod 11. A roller 15 is installed at the bottom of the telescopic rod 11. The overall structure is equipped with a support structure that can be vertically lowered to the ground. The support structure is fixed by the fixed rod 8, the rotating shaft 9 and the telescopic rod 11 at the bottom. When the support structure is not needed, the telescopic rod 11 can be stored by rotating shaft 9, making the equipment highly versatile and usable in various environments. In particular, it can be used for long-term standing firefighting or for mobile use on flat areas, where the support structure can be lowered to achieve the effect of auxiliary weighing.

[0021] Furthermore, the telescopic rod 11 includes a retractable rod 16 and a connecting rod 17. The retractable rod 16 extends axially inside the connecting rod 17. The fastening mechanism 13 is located on the surface of the connecting rod 17. The fastening mechanism 13 includes a rotating shaft 18 and a fastening plate 19. The top of the fastening plate 19 is hook-shaped. The surface of the retractable rod 16 is provided with a clamping groove 20. The inside of the clamping groove 20 is inserted into the end of the fastening plate 19 for a snap-fit ​​connection. Its structure mainly divides the telescopic rod 11 into a retractable rod 16 and a connecting rod 17. Whether extending or retracting, the fastening plate 19 of the fastening mechanism 13 is embedded and fixed to the clamping groove 20 on the surface of the retractable rod 16, such as... Figure 2As shown, the fixing function can be completed by fixing it to the end of the fastening plate 19 through the ball buckle. Since the hook structure is mainly inserted at an angle, the force direction of the fastening plate 19 under pressure is also towards the clamping groove 20. When needed, the fastening mechanism 13 can also be symmetrically arranged on the front and rear surfaces of the sleeve rod 17 to enhance the support and force transmission effect. The provided insertion buckles are mainly ball buckles or sockets 24, etc., and the specific connection strength can be determined according to the weight.

[0022] Furthermore, the bottom of the second support rod 7 is fixedly connected to the fixed rod 8, and the fixed rod 8 and the telescopic rod 11 are rotatably connected through the rotating shaft 9; the roller 15 is a universal wheel, and the roller 15 is arranged in pairs at the bottom of the telescopic rod 11, and the fixed rods 8 on both sides are connected through the rotating shaft 9; like Figure 1 As shown, a frame structure is formed between the second support rod 7 on both sides, the fixed rod 8 and the rotating shaft 9. The structure extends downward to the bottom of the water tank 1 through a fixed connection. Then, the height is adjusted according to the user's height by the telescopic rod 11 so that the roller 15 can serve as the main weighing structure, and the user only needs to provide lateral pulling force.

[0023] Working principle: Its overall structure is mainly supported by the existing support frame 4 system of water tank 1. That is, the bottom of the second support rod 7 at the bottom of the original support frame 4 is extended to a fixed rod 8, and a rotating shaft 9 is installed between the two fixed rods 8 and a telescopic rod 11 is added. Rollers 15 are installed at the bottom of the telescopic rod 11. It can be assembled in a conventional way. When using it, mainly... Figure 4 When folded down, the telescopic rod 11 is extended by adjusting the retractable rod 16 and the connecting rod 17 to increase its length. After adjustment, the fastening mechanism 13 rotates based on the rotating shaft 18 and is fixed inside the clamping groove 20. At this time, the roller 15 falls to the ground, and the overall structure is supported vertically. The user only needs to generate lateral pulling force to maintain the front and rear balance of the device. This allows the staff to use this support structure to reduce physical exertion during firefighting and movement in flat areas. The device has fewer structural components and can still be carried out in complex environments after being folded up. The overlapping plate 12 after folding up can place the user's elbows to reduce hand fatigue when holding the aerosol sprayer.

[0024] Example 2 The difference from Example 1 is that, as Figure 4-5As shown, the end of the snap-fit ​​plate 19 is embedded in the inner side of the snap-fit ​​groove 14, and the overlapping plate 12 is located on the outer edge of the sleeve rod 17; the locking mechanism 10 includes an outer spline 21 and an inner spline 22, the outer spline 21 corresponds to the bottom of the fixed rod 8 for insertion, and the inner spline 22 corresponds to the end surface of the rotating shaft 9 for insertion. The end of the rotating shaft 9 extends to the outside of the fixed rod 8 and is inserted into the locking mechanism 10. The locking mechanism 10 extends and retracts along the axial direction of the rotating shaft 9 to lock or unlock the rotating shaft 9; the bottom of the gas storage cylinder 3 is fitted with Equipped with a pressure reducing valve 23, the axial extension line of the overlapping plate 12 always intersects the vertical extension line of the pressure reducing valve 23. The overlapping plate 12 has a socket 24 on the side away from the roller 15. The axial extension line of the overlapping plate 12 is located on the middle side of the pair of rollers 15. The overlapping plate 12, the fastening mechanism 13, and the clamping groove 20 are all located on the same side. A sliding rod 2 is axially connected between the locking mechanism 10 and the rotating shaft 9, and the sliding rod 2 passes through the middle of the locking mechanism 10. The locking mechanism 10 slides back and forth on the surface of the sliding rod 2.

[0025] Specifically, the snap-fit ​​groove 14 provided at the top of the first support rod 6 can cooperate with the snap-fit ​​plate 19 to form an embedded snap-fit ​​structure, such as... Figure 4 As shown, after the connection is made, the connecting rod 17 itself not only forms an axial limiting function, but also allows the overlapping plate 12 to not only place the user's elbow, but also allows the aerosol sprayer to be directly inserted into the inside of the socket 24, and the front part to overlap the middle side of the symmetrical roller 15 to form a fixed placement function, so that the user does not need to carry it on their back or hold it for a long time. In the long-term fire extinguishing process, when the telescopic rod 11 cannot be lowered in the target area, the user only needs to open the aerosol sprayer and align the rear part with the pressure reducing valve 23. When spraying, the recoil force is mainly blocked by the pressure reducing valve 23, and the user only needs to pull the trigger, without having to hold and press the aerosol sprayer for a long time. To further enhance the locking effect and facilitate rapid unlocking, the locking structure can move back and forth on the surface of the sliding rod 2, i.e., towards the rotating shaft 9. The inner spline 22 will be inserted into the spline portion at the end of the rotating shaft 9, while the outer spline 21 will always be inserted into the spline area at the bottom of the fixed rod 8. Figure 5 As shown, when the device is pulled out, the inner spline 22 of the locking structure will move from the spline portion at the end of the rotating shaft 9 to the rotating portion, allowing the rotating portion to rotate freely inside the inner spline 22. This allows the user to simply insert or remove the locking mechanism 10 without moving the rotating shaft 9 itself.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mobile support structure for a backpack water cannon used for forest fire fighting, comprising a water tank (1), an aerosol sprayer, an air cylinder (3), and a support frame (4), wherein the support frame (4) is used to fix the water tank (1), characterized in that, The support frame (4) includes a side panel (5) symmetrically arranged on the surface of the water tank (1), a first support rod (6) at the front of the side panel (5) and a second support rod (7) at the rear of the side panel (5). A fixing rod (8) is installed at the bottom of the second support rod (7). A rotating shaft (9) is installed at the bottom of the fixing rod (8). Locking mechanisms (10) are provided at both ends of the rotating shaft (9). The locking mechanism is used to limit the rotation shaft (9). A telescopic rod (11) is provided at the bottom of the rotating shaft (9). An overlapping plate (12) and a fastening mechanism (13) are provided on the surface of the telescopic rod (11). The overlapping plate (12) is used to fix the aerosol sprayer. A fastening groove (14) is provided at the top of the first support rod (6). The fastening mechanism (13) is used to limit the length of the telescopic rod (11). A roller (15) is installed at the bottom of the telescopic rod (11).

2. The mobile support structure for a backpack-mounted water cannon for forest fire fighting according to claim 1, characterized in that, The telescopic rod (11) includes a retractable rod (16) and a connecting rod (17). The retractable rod (16) extends axially inside the connecting rod (17). The fastening mechanism (13) is located on the surface of the connecting rod (17). The fastening mechanism (13) includes a rotating shaft (18) and a fastening plate (19). The top of the fastening plate (19) is hook-shaped. The surface of the retractable rod (16) is provided with a clamping groove (20). The inside of the clamping groove (20) is connected to the end of the fastening plate (19) by an insertable detachable snap fastener.

3. The mobile support structure for a backpack-mounted water cannon for forest fire fighting according to claim 2, characterized in that, The end of the snap-fit ​​plate (19) is embedded in the inner side of the snap-fit ​​groove (14), and the overlapping plate (12) is located on the outer edge of the sleeve rod (17).

4. The mobile support structure for a forest fire-fighting backpack water cannon according to claim 3, characterized in that, The bottom of the second support rod (7) is fixedly connected to the fixed rod (8), and the fixed rod (8) and the telescopic rod (11) are rotatably connected through the rotating shaft (9).

5. The mobile support structure for a forest fire-fighting backpack water cannon according to claim 4, characterized in that, The roller (15) is a universal wheel. The roller (15) is arranged in pairs at the bottom of the telescopic rod (11). The fixed rods (8) on both sides are connected by a rotating shaft (9).

6. The mobile support structure for a forest fire-fighting backpack water cannon according to claim 5, characterized in that, The locking mechanism (10) includes an external spline (21) and an internal spline (22). The external spline (21) is inserted into the bottom of the fixed rod (8), and the internal spline (22) is inserted into the end surface of the rotating shaft (9). The end of the rotating shaft (9) extends to the outside of the fixed rod (8) and is inserted into the locking mechanism (10). The locking mechanism (10) extends and retracts along the axial direction of the rotating shaft (9) to lock or unlock the rotating shaft (9).

7. The mobile support structure for a backpack water cannon for forest fire fighting according to claim 6, characterized in that, The gas cylinder (3) is equipped with a pressure reducing valve (23) at the bottom. The axial extension line of the overlapping plate (12) always intersects with the vertical extension line of the pressure reducing valve (23). The overlapping plate (12) has an insertion port (24) on the side away from the roller (15).

8. The mobile support structure for a forest fire-fighting backpack water cannon according to claim 7, characterized in that, The axial extension line of the overlapping plate (12) is located on the middle side of the pair of rollers (15), and the overlapping plate (12), the fastening mechanism (13) and the clamping groove (20) are all located on the same side.

9. A mobile support structure for a backpack-mounted water cannon for forest fire fighting according to claim 8, characterized in that, A sliding rod (2) is axially connected between the locking mechanism (10) and the rotating shaft (9), and the sliding rod (2) passes through the middle of the locking mechanism (10). The locking mechanism (10) slides back and forth on the surface of the sliding rod (2).

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