A quick-connection device for fire hoses

Abstract

This utility model relates to the field of fire hose technology and discloses a quick-connect device for fire hoses, including a hose connector. A fixing plate is attached to the outer wall of the hose connector. A rotating plate is rotatably connected to the outer wall of the fixing plate. A ring-shaped rack is fixedly connected to the inner wall of the rotating plate. A gear is rotatably connected inside the fixing plate. A positioning block is fixedly connected to the outer wall of the fixing plate. A threaded rod is threaded inside the gear. A push block is fixedly connected to one end of the threaded rod. A locking block is slidably connected inside the positioning block. A fixing block is fixedly connected to the outer wall of the locking block. In this utility model, during installation, the precise fit between the positioning block and the positioning hole provides a stable foundation. Rotating the rotating plate drives the gear and threaded rod to slide the locking block quickly into the hose connector, achieving quick disassembly of the fixing plate. The entire process is simple to operate and effectively saves valuable time in firefighting operations.

Description

Technical Field

[0001] This utility model relates to the field of fire hose technology, and in particular to a quick-connect device for fire hoses. Background Technology

[0002] In fire and rescue operations, fire hoses are crucial equipment for transporting extinguishing agents, and the performance of their connecting devices directly affects rescue efficiency and safety. Efficient and reliable quick-connect devices for fire hoses ensure that firefighters can quickly assemble and disassemble hoses in emergencies, buying valuable time for firefighting and rescue. Therefore, the design and optimization of connecting devices has always been a key research focus in the field of firefighting equipment.

[0003] Currently, most fire hose connection devices on the market adopt either a snap-fit ​​or threaded structure. Snap-fit ​​connections secure the hoses by manually engaging the clips, relying on the mechanical engagement of the slots to provide connection strength. Threaded connections, on the other hand, achieve a stable connection by screwing the internal and external threads of the hose connector, utilizing the friction and tightening force between the threads. Both types of structures meet the needs of hose connection to a certain extent and are widely used in firefighting operations.

[0004] However, existing snap-fit ​​connection devices require multiple adjustments to the position of the clips during the fastening process, and the clips are prone to loosening due to external impacts in complex rescue environments; threaded connections require firefighters to manually tighten and unscrew repeatedly, which is not only time-consuming, but may also lead to connection failure or disassembly difficulties in emergency situations due to issues such as thread misalignment or corrosion, making it difficult to meet the high-efficiency requirements of firefighting operations where every second counts. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a quick-connect device for fire hoses, which aims to improve the existing snap-on connection device. The snap-on process requires multiple adjustments to the position of the clips, and the snaps are prone to loosening due to external impacts in complex rescue environments, making it difficult to meet the high-efficiency requirements of fire fighting operations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-connect device for fire hoses, comprising a hose connector, a fixing plate attached to the outer wall of the hose connector, a rotating plate rotatably connected to the outer wall of the fixing plate, an annular rack fixedly connected to the inner wall of the rotating plate, a gear rotatably connected to the inside of the fixing plate, a positioning block fixedly connected to the outer wall of the fixing plate, a threaded rod threadedly connected to the inside of the gear, a push block fixedly connected to one end of the threaded rod, a locking block slidably connected to the inside of the positioning block, a fixing block fixedly connected to the outer wall of the locking block, and a pulling component provided on the outer wall of the fixing block;

[0007] The pulling assembly includes a telescopic rod, both ends of which are fixedly connected to the outer wall of the fixed block. A spring is sleeved on the outer wall of the telescopic rod, both ends of which are fixedly connected to the outer wall of the fixed block. A limit block is fixedly connected to the inner wall of the positioning block.

[0008] Furthermore, a positioning plate is fixedly connected to the inner wall of the hose connector, a sealing ring is slidably connected to the inner wall of the positioning plate, a limit ring is fixedly connected to the outer wall of the sealing ring, and a propulsion component is provided inside the sealing ring.

[0009] Furthermore, the propulsion assembly includes a slide rod and a second spring. One end of the slide rod is fixedly connected to the inside of the sealing ring, and the second spring is sleeved on the outer wall of the slide rod.

[0010] Furthermore, the outer wall of the slide rod is slidably connected to the inside of the positioning plate, and the sealing ring is slidably connected to the inner wall of the positioning plate.

[0011] Furthermore, one end of the second spring is fixedly connected to the inside of the sealing ring, and the other end of the second spring is fixedly connected to the inner wall of the positioning plate.

[0012] Furthermore, the outer wall of the limiting ring is slidably connected to the inside of the positioning plate.

[0013] Furthermore, the gear meshes with the annular rack, and the outer wall of the positioning block is slidably connected to the inside of the hose connector.

[0014] Furthermore, the outer wall of the fixing block is slidably connected to the positioning block, and the outer wall of the annular rack is rotatably connected to the inside of the fixing plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, during installation, the precise fit between the positioning block and the positioning hole lays a solid foundation. Rotating the rotating plate drives the gear and threaded rod to slide the locking block quickly into the hose connector. With the tension of the spring and the limiting block, the connection is tight and reliable. During disassembly, rotating the rotating plate in the opposite direction and using the spring's return force can easily retract the locking block, achieving quick disassembly of the fixing plate. The whole process is simple to operate and effectively saves valuable time in firefighting operations.

[0017] 2. In this utility model, after the fixing plate is installed in place, the sealing ring fits into the hose connector. The extension and retraction of the spring two, in conjunction with the guide of the sliding rod, pushes the sealing ring to fit tightly. The limiting ring further ensures the stability of the sealing ring position, effectively preventing leakage at the hose connection, providing a guarantee for stable water flow during firefighting operations, and improving fire extinguishing efficiency and safety. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a quick-connection device for fire hoses proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of one side of the hose connector of a quick-connect device for fire hoses proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the positioning block of a quick-connection device for fire hoses proposed in this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the internal structure of the positioning plate of a quick-connection device for fire hoses proposed in this utility model.

[0023] Legend:

[0024] 1. Water hose connector; 2. Fixing plate; 3. Rotating plate; 4. Ring rack; 5. Gear; 6. Positioning block; 7. Threaded rod; 8. Push block; 9. Locking block; 10. Fixing block; 11. Telescopic rod; 12. Spring 1; 13. Limiting block; 14. Positioning plate; 15. Sealing ring; 16. Limiting ring; 17. Slide rod; 18. Spring 2. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1 - Figure 5 An embodiment of this utility model provides a quick-connect device for fire hoses, including a hose connector 1, a fixing plate 2 attached to the outer wall of the hose connector 1, a rotating plate 3 rotatably connected to the outer wall of the fixing plate 2, an annular rack 4 fixedly connected to the inner wall of the rotating plate 3, a gear 5 rotatably connected to the inside of the fixing plate 2, a positioning block 6 fixedly connected to the outer wall of the fixing plate 2, a threaded rod 7 threadedly connected to the inside of the gear 5, a push block 8 fixedly connected to one end of the threaded rod 7, a locking block 9 slidably connected to the inside of the positioning block 6, a fixing block 10 fixedly connected to the outer wall of the locking block 9, and a pulling component provided on the outer wall of the fixing block 10.

[0027] The pulling assembly includes a telescopic rod 11, both ends of which are fixedly connected to the outer wall of the fixing block 10. A spring 12 is sleeved on the outer wall of the telescopic rod 11, both ends of which are fixedly connected to the outer wall of the fixing block 10. A limit block 13 is fixedly connected to the inner wall of the positioning block 6. The gear 5 meshes with the ring rack 4. The outer wall of the positioning block 6 is slidably connected to the inside of the hose connector 1. The outer wall of the fixing block 10 is slidably connected to the positioning block 6. The outer wall of the ring rack 4 is rotatably connected to the inside of the fixing plate 2.

[0028] Specifically, when using this fire hose quick-connect device, first, the positioning block 6 is precisely embedded into the pre-set positioning hole inside the hose connector 1 to ensure a secure connection between the positioning block 6 and the hose connector 1, while simultaneously determining the correct installation position of the fixing plate 2. Then, the rotating plate 3 is rotated, driving the ring rack 4 to rotate, which in turn drives the four gears 5 inside the fixing plate 2 to rotate synchronously. Based on the threaded transmission relationship between the gears 5 and the threaded rod 7, the threaded rod 7 is displaced when the gears 5 rotate, pushing the push block 8 to move inside the positioning block 6. The movement of the push block 8 causes the locking block 9 to slide from inside the positioning block 6 into the hose connector 1. During this process, the spring 12 is stretched between the two fixing blocks 10, providing stable tension and ensuring a tight connection. The limiting block 13 limits the movement range of the push block 8, preventing excessive movement of the push block 8 from damaging the spring 12 and ensuring the stability of the entire installation process, allowing the locking block 9 to be reliably fixed inside the hose connector 1, achieving a secure connection between the fixing plate 2 and the hose connector 1. Disassembly is simple. Just rotate the rotating plate 3 in the opposite direction and use the rebound force of the spring 12 to pull the locking block 9 from the hose connector 1 back into the positioning block 6, easily completing the disassembly of the fixing plate 2, which greatly improves the convenience and efficiency of disassembly and assembly of the connecting device.

[0029] Reference Figure 1 - Figure 5 A positioning plate 14 is fixedly connected to the inner wall of the hose connector 1. A sealing ring 15 is slidably connected to the inner wall of the positioning plate 14. A limit ring 16 is fixedly connected to the outer wall of the sealing ring 15. A propulsion assembly is provided inside the sealing ring 15. The propulsion assembly includes a slide rod 17 and a second spring 18. One end of the slide rod 17 is fixedly connected to the inside of the sealing ring 15. The second spring 18 is sleeved on the outer wall of the slide rod 17. The outer wall of the slide rod 17 is slidably connected to the inside of the positioning plate 14. The sealing ring 15 is slidably connected to the inner wall of the positioning plate 14. One end of the second spring 18 is fixedly connected to the inside of the sealing ring 15. The other end of the second spring 18 is fixedly connected to the inner wall of the positioning plate 14. The outer wall of the limit ring 16 is slidably connected to the inside of the positioning plate 14.

[0030] Specifically, after the fixing plate 2 is installed in place, the sealing ring 15 fits into the hose connector 1. The spring 18 extends and retracts, pushing the sealing ring 15 into tight contact with the hose connector 1. During this process, the slide rod 17 provides guidance for the spring 18, ensuring the accuracy of its extension and retraction direction; the limiting ring 16 limits the sealing ring 15 to prevent it from shifting, thereby achieving a stable seal at the connection point, effectively preventing leakage of the fire hose during use, and providing a reliable guarantee for stable water flow delivery in firefighting operations.

[0031] Working principle: When using this connecting device, first align the positioning block 6 with the preset positioning hole inside the hose connector 1 to ensure a stable connection between the positioning block 6 and the hose connector 1. The function of the positioning block 6 is to determine the position of the fixing plate 2 and keep it in the correct position. Next, by rotating the rotating plate 3, the ring rack 4 is driven to rotate, thereby driving the four gears 5 inside the fixing plate 2 to rotate synchronously. The threaded relationship between the gears 5 and the threaded rod 7 causes the threaded rod 7 to move with the rotation of the gears 5. During this process, the push block 8 will move inside the positioning block 6, driving the locking block 9 to move out of the positioning block 6. The push block 8 slides into the interior of the hose connector 1, while the spring 12 is stretched between the two fixing blocks 10 to provide a certain tension. Finally, the movement of the push block 8 is limited by the limiting block 13 to prevent the push block 8 from damaging the spring 12 during excessive movement. The limiting block 13 can also ensure that the push block 8 can only move within the specified range, thereby ensuring the stability of the entire installation process. During disassembly, simply rotate the rotating plate 3 in the opposite direction and use the rebound force of the spring 12 to pull the locking block 9 back into the positioning block 6. In this way, the fixing plate 2 can be easily removed from the equipment, realizing the disassembly and assembly of the fixing plate 2.

[0032] In addition, after the fixing plate 2 is installed, it will cause the sealing ring 15 to fit with the water hose connector 1. At this time, the extension and retraction of the spring 18 pushes the sealing ring 15 to fit tightly with the water hose connector 1, thereby achieving a stable seal. During this process, the slide rod 17 guides the spring 18, and the limiting ring 16 limits the sealing ring 15.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick coupling device for fire hose, comprising a hose coupling (1), characterized in that: The outer wall of the hose connector (1) is fitted with a fixing plate (2), the outer wall of the fixing plate (2) is rotatably connected to a rotating plate (3), the inner wall of the rotating plate (3) is fixedly connected to an annular rack (4), the inside of the fixing plate (2) is rotatably connected to a gear (5), the outer wall of the fixing plate (2) is fixedly connected to a positioning block (6), the inside of the gear (5) is threadedly connected to a threaded rod (7), one end of the threaded rod (7) is fixedly connected to a push block (8), the inside of the positioning block (6) is slidably connected to a locking block (9), the outer wall of the locking block (9) is fixedly connected to a fixing block (10), and the outer wall of the fixing block (10) is provided with a pulling component; The pulling assembly includes a telescopic rod (11), both ends of which are fixedly connected to the outer wall of the fixed block (10). A spring (12) is sleeved on the outer wall of the telescopic rod (11), both ends of which are fixedly connected to the outer wall of the fixed block (10). A limit block (13) is fixedly connected to the inner wall of the positioning block (6).

2. A fire hose quick coupling device according to claim 1, characterized in that: The inner wall of the hose connector (1) is fixedly connected to a positioning plate (14), the inner wall of the positioning plate (14) is slidably connected to a sealing ring (15), the outer wall of the sealing ring (15) is fixedly connected to a limit ring (16), and a propulsion component is provided inside the sealing ring (15).

3. A fire hose quick coupling device according to claim 2, characterized in that: The propulsion assembly includes a slide rod (17) and a second spring (18). One end of the slide rod (17) is fixedly connected to the inside of the sealing ring (15), and the second spring (18) is sleeved on the outer wall of the slide rod (17).

4. A fire hose quick coupling device according to claim 3, characterized in that: The outer wall of the slide rod (17) is slidably connected to the inside of the positioning plate (14), and the sealing ring (15) is slidably connected to the inner wall of the positioning plate (14).

5. A fire hose quick coupling device according to claim 3, characterized in that: One end of the second spring (18) is fixedly connected to the inside of the sealing ring (15), and the other end of the second spring (18) is fixedly connected to the inner wall of the positioning plate (14).

6. A fire hose quick coupling device according to claim 3, characterized in that: The outer wall of the limiting ring (16) is slidably connected to the inside of the positioning plate (14).

7. The quick connect device for fire hose of claim 1, wherein: The gear (5) meshes with the ring rack (4), and the outer wall of the positioning block (6) is slidably connected to the inside of the water hose connector (1).

8. The quick connect device for fire hose of claim 1, wherein: The outer wall of the fixing block (10) is slidably connected to the positioning block (6), and the outer wall of the annular rack (4) is rotatably connected to the inside of the fixing plate (2).

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