Fire-fighting lance connecting structure

Abstract

The utility model discloses a fire-fighting lance connecting structure, and particularly relates to the technical field of fire-fighting lances, the fire-fighting lance connecting structure comprises a lance body and a water pipe end part connecting piece, the end part of the lance body is fixedly provided with a lance tail connecting piece, the end part of the water pipe end part connecting piece is fixedly provided with a matched clamping head, the end part of the matched clamping head is provided with two clamping blocks, and the two clamping blocks are fixedly connected with the lance tail connecting piece. A clamping block is arranged on the outer wall of the matching clamping head, two clamping claws matched with the clamping block are arranged at the end of the gun tail connecting piece, a fixing block is arranged on the outer wall of the matching clamping head, a locking rod is fixed to the end of the fixing block, and a socket is arranged on the outer wall of the gun tail connecting piece. The socket is arranged outside the gun tail connecting piece, and the locking rod is inserted into the socket, so that the matching clamping head and the gun tail connecting piece can be further locked, the problem that the matching clamping head falls off from the end part of the gun tail connecting piece due to unskilled operation of a user is avoided, and the connection stability of the fire-fighting lance and the fire-fighting water pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire hose technology, specifically to a fire hose connection structure. Background Technology

[0002] A fire hose nozzle is a water-spraying tool used for extinguishing fires. It sprays a dense and powerful stream of water by connecting to a fire hose. A fire hose nozzle consists of a copper tube and a piston. It has a small nozzle that can spray water to high places or far away. The inside of the nozzle barrel needs to be very smooth to reduce water flow resistance.

[0003] Existing fire hoses typically have a nozzle at one end and a connecting structure at the other. This connecting structure is usually used to connect to the end of the fire hose in the fire hose box. The end of the fire hose usually has a connecting part that matches the connecting structure at the end of the fire hose. The connecting structure and the connecting part are usually directly snapped together by a snap-fit ​​mechanism, which is quick to install and convenient to use. However, the existing connecting structure of fire hoses still has shortcomings. In actual use, when a fire occurs in a residential building, untrained residents may attempt to connect the fire hose to the fire hose. The connection between the connecting structure and the fire hose, secured by a single snap-fit ​​mechanism, lacks a safety mechanism, which may lead to misoperation, resulting in connection failure and the connection between the connecting structure and the fire hose detaching, thus affecting the timing of firefighting. Utility Model Content

[0004] The purpose of this utility model is to provide a fire hose connection structure to solve the above-mentioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fire hose nozzle connection structure includes a nozzle body and a water pipe end connector. A nozzle tail connector is fixed to the end of the nozzle body, and a mating clip is fixed to the end of the water pipe end connector. The nozzle tail connector and the mating clip cooperate with each other. Two locking blocks are provided at the end of the mating clip, and a groove is provided in the area between the two locking blocks at the end of the mating clip. Two locking claws that cooperate with the locking blocks are provided at the end of the nozzle tail connector, and a locking groove is formed on the inner side of the locking claws. A fixing block is provided on the outer wall of the mating clip, and a locking rod is fixed to the end of the fixing block. A socket is provided on the outer wall of the nozzle tail connector, and a through hole that cooperates with the locking rod is formed on the surface of the socket.

[0007] Preferably, the locking rod has a cylindrical structure, and a ball is fixed at the end of the locking rod. The through hole is arc-shaped, and both ends of the through hole are circular holes. The ball at the end of the locking rod can pass through the circular holes.

[0008] Preferably, the end of the mating head is provided with an installation groove, and a sealing component is provided in the installation groove. The sealing component includes a positioning ring, a first protruding tube is fixed to one side of the positioning ring, a second protruding tube is fixed to the inner side of the first protruding tube, and an insertion tube is fixed to the inner side of the second protruding tube.

[0009] Preferably, the front surfaces of the first protruding tube, the positioning ring, and the mounting groove are all provided with threaded holes, and the first protruding tube, the positioning ring, and the mounting groove are fixedly connected by bolts.

[0010] Preferably, the end of the gun tail connector is provided with a first slot, and the inner side of the gun tail connector near the first slot is provided with a second slot, and the inner side of the second slot is provided with an inner tube.

[0011] Preferably, the first protruding tube can be inserted into the first slot, and the outer wall of the first protruding tube fits against the inner wall of the first slot; the second protruding tube can be inserted into the second slot, and the outer wall of the second protruding tube fits against the inner wall of the second slot.

[0012] Preferably, a limiting baffle is provided at the end of the water pipe end connector away from the mating clamp, and a water pipe sleeve is provided on one side of the limiting baffle, with a sealing strip provided on the outer wall of the water pipe sleeve.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] By setting a fixing block and a locking rod on the outside of the mating head and a socket on the outside of the nozzle tail connector, the locking rod is inserted into the socket during the engagement of the mating head and the nozzle tail connector. It rotates along with the rotation of the mating head and the nozzle tail connector, thereby further locking the mating head and the nozzle tail connector. This prevents the mating head from falling off the end of the nozzle tail connector due to user unfamiliarity with the operation, improves the connection stability between the fire nozzle and the fire hose, reduces errors during the use of the fire nozzle, and helps to improve fire fighting efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a diagram showing the gun tail connector and mating clip of this utility model after disassembly.

[0018] Figure 3 This is a split schematic diagram of the water pipe end connector and sealing assembly of this utility model;

[0019] Figure 4 This is a perspective view of the sealing assembly of this utility model;

[0020] Figure 5 This is a left view of the card head that accompanies this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the gun tail connector and the gun body of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Gun body; 2. Rear end connector;

[0024] 3. Matching clip; 31. Clip block; 32. Groove;

[0025] 4. Water pipe end connector; 41. Water pipe sleeve; 42. Limiting baffle;

[0026] 5. Fixing block; 6. Locking rod;

[0027] 7. Sealing assembly; 71. Positioning ring; 72. First protruding tube; 73. Second protruding tube; 74. Insertion tube;

[0028] 8. Snap-fit ​​claw; 9. Socket; 10. Mounting slot; 11. Threaded hole; 12. Through hole; 13. Snap-fit ​​slot; 14. First slot; 15. Second slot; 16. Inner tube. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] This utility model provides, for example Figure 1 - Figure 6 The fire hose connection structure shown includes a hose body 1 and a water pipe end connector 4. A hose tail connector 2 is fixed to the end of the hose body 1. A mating clip 3 is fixed to the end of the water pipe end connector 4. The hose tail connector 2 and the mating clip 3 cooperate with each other. The end of the mating clip 3 is provided with two clips 31. A groove 32 is provided in the area between the two clips 31 at the end of the mating clip 3. The end of the hose tail connector 2 is provided with two locking claws 8 that cooperate with the clips 31. A slot 13 is opened on the inner side of the locking claws 8. A fixing block 5 is provided on the outer wall of the mating clip 3. A locking rod 6 is fixed to the end of the fixing block 5. A socket 9 is provided on the outer wall of the hose tail connector 2. A through hole 12 that cooperates with the locking rod 6 is opened on the surface of the socket 9.

[0031] In this embodiment, during the specific connection process, the mating head 3 and the gun tail connector 2 are kept horizontal, and the locking block 31 at the end of the mating head 3 is offset from the locking claw 8 at the end of the gun tail connector 2. The locking rod 6 is inserted into the through hole 12. At this time, the locking claw 8 and the socket 9 are located outside the groove 32. The mating head 3 is rotated, which drives the locking block 31 and the locking rod 6 to rotate. The locking block 31 rotates into the slot 13 of the locking claw 8, and the locking rod 6 slides from one end of the through hole 12 to the other end. At this time, the two hands pull the gun tail connector 2 and the mating head 3 in opposite directions. The locking rod 6 cannot disengage from the socket 9, and the locking block 31 cannot disengage from the locking claw 8. The mating head 3 and the gun tail connector 2 are doubly fixed and will not separate, thus completing the connection.

[0032] like Figure 3 and Figure 6 As shown, the locking rod 6 has a cylindrical structure, and a ball is fixed at the end of the locking rod 6. The through hole 12 is arc-shaped, and both ends of the through hole 12 are circular holes. The ball at the end of the locking rod 6 can pass through the circular holes.

[0033] The ball at the end of the locking rod 6 is inserted into the circular hole at one end of the through hole 12. After the locking rod 6 rotates with the mating head 3, the locking rod 6 slides in the through hole 12 until it slides to the circular hole at the other end of the through hole 12. The diameter of the circular hole at the other end is smaller than the diameter of the ball at the end of the locking rod 6. At this time, the locking rod 6 cannot be disengaged from the socket 9. The mating head 3 needs to be rotated counterclockwise to drive the locking rod 6 to slide along the through hole 12 and return to its original position. Then, the ball at the end of the locking rod 6 passes through the circular hole where it was initially inserted before the locking rod 6 can be pulled out of the socket 9.

[0034] like Figure 3 and Figure 4 As shown, the end of the card head 3 is provided with an installation groove 10, and a sealing component 7 is provided in the installation groove 10. The sealing component 7 includes a positioning ring 71, a first protruding tube 72 is fixed on one side of the positioning ring 71, a second protruding tube 73 is fixed on the inner side of the first protruding tube 72, and an insertion tube 74 is fixed on the inner side of the second protruding tube 73.

[0035] A hole is provided in the middle of the positioning ring 71 for water to pass through. The diameter of the hole is the same as the inner diameter of the insertion tube 74. The ends of the first protrusion tube 72, the second protrusion tube 73 and the insertion tube 74 are all fixed to one end face of the positioning ring 71. The main function of the positioning ring 71 is to bring the ends of the first protrusion tube 72, the second protrusion tube 73 and the insertion tube 74 together so as to facilitate the fitting and installation with the mating clip 3.

[0036] like Figure 3 - Figure 5As shown, threaded holes 11 are provided on the front surfaces of the first protruding tube 72, the positioning ring 71, and the mounting groove 10. It should be noted that the first protruding tube 72, the positioning ring 71, and the mounting groove 10 are fixedly connected by bolts. The sealing component 7 can be removed from the mounting groove 10 to facilitate the replacement of the sealing component 7. After long-term use, the sealing component 7 may be worn. By removing the sealing component 7, the entire sealing component 7 can be replaced, thereby ensuring the sealing performance of the connection between the gun tail connector 2 and the mating clamp 3.

[0037] The end of the gun tail connector 2 is provided with a first slot 14, and the inner side of the gun tail connector 2 near the first slot 14 is provided with a second slot 15, and the inner side of the second slot 15 is provided with an inner tube 16.

[0038] During the connection process between the gun tail connector 2 and the mating clip 3, the sealing component 7 is moved horizontally towards the end face of the gun tail connector 2, and the first protrusion 72 of the sealing component 7 is inserted into the first slot 14, with the outer wall of the first protrusion 72 fitting against the inner wall of the first slot 14. The second protrusion 73 of the sealing component 7 is then inserted into the second slot 15, with the outer wall of the second protrusion 73 fitting against the inner wall of the second slot 15. After the first protrusion 72 and the first slot 14 are engaged and the second protrusion 73 and the second slot 15 are engaged and connected, the gun tail connector 2 and the mating clip 3 have a high degree of sealing, and water will not overflow from between the gun tail connector 2 and the mating clip 3.

[0039] like Figure 1 - Figure 5 As shown, a limiting baffle 42 is provided at the end of the water pipe end connector 4 away from the mating clamp 3. A water pipe sleeve part 41 is provided on one side of the limiting baffle 42. A sealing strip is provided on the outer wall of the water pipe sleeve part 41. The fire water pipe is usually composed of an inner lining, a braided layer and an outer covering layer. It has good wear resistance and pressure resistance. Its length is generally 20 meters or 25 meters. In the specific use process, the end of the fire water pipe is sleeved on the outside of the water pipe sleeve part 41. Then, the fire water pipe is tightly connected to the water pipe sleeve part 41 with cable ties, wire or other fasteners to ensure a seal. Water enters the water pipe end connector 4 after passing through the fire water pipe, then through the mating clamp 3 and the gun tail connector 2, and finally enters the gun body 1 and sprays out from the gun head of the gun body 1.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fire hose connection structure, comprising a hose body (1) and a water pipe end connector (4), wherein a hose tail connector (2) is fixed to the end of the hose body (1), and a mating clip (3) is fixed to the end of the water pipe end connector (4), wherein the hose tail connector (2) and the mating clip (3) cooperate with each other, characterized in that: The end of the mating head (3) is provided with two locking blocks (31), and the area between the two locking blocks (31) at the end of the mating head (3) is provided with a groove (32). The end of the gun tail connector (2) is provided with two locking claws (8) that cooperate with the locking blocks (31), and the inner side of the locking claws (8) is provided with a locking groove (13). The outer wall of the mating head (3) is provided with a fixing block (5), and the end of the fixing block (5) is fixed with a locking rod (6). The outer wall of the gun tail connector (2) is provided with a socket (9), and the surface of the socket (9) is provided with a through hole (12) that cooperates with the locking rod (6).

2. The fire hose connection structure according to claim 1, characterized in that: The locking rod (6) is a cylindrical structure, and a ball is fixed at the end of the locking rod (6). The through hole (12) is arc-shaped, and both ends of the through hole (12) are circular holes. The ball at the end of the locking rod (6) can pass through the circular hole.

3. The fire hose connection structure according to claim 1, characterized in that: The end of the fitting head (3) is provided with a mounting groove (10), and a sealing component (7) is provided in the mounting groove (10). The sealing component (7) includes a positioning ring (71), a first protruding tube (72) is fixed on one side of the positioning ring (71), a second protruding tube (73) is fixed on the inner side of the first protruding tube (72), and an insertion tube (74) is fixed on the inner side of the second protruding tube (73).

4. The fire hose connection structure according to claim 3, characterized in that: The front surfaces of the first protruding tube (72), the positioning ring (71), and the mounting groove (10) are all provided with threaded holes (11), and the first protruding tube (72), the positioning ring (71), and the mounting groove (10) are fixedly connected by bolts.

5. A fire hose connection structure according to claim 4, characterized in that: The end of the gun tail connector (2) is provided with a first slot (14), and the gun tail connector (2) is provided with a second slot (15) on the inner side near the first slot (14), and an inner tube (16) is provided on the inner side of the second slot (15).

6. A fire hose connection structure according to claim 5, characterized in that: The first protruding tube (72) can be inserted into the first slot (14), and the outer wall of the first protruding tube (72) fits against the inner wall of the first slot (14). The second protruding tube (73) can be inserted into the second slot (15), and the outer wall of the second protruding tube (73) fits against the inner wall of the second slot (15).

7. A fire hose connection structure according to claim 1, characterized in that: The end of the water pipe connector (4) away from the mating clamp (3) is provided with a limiting baffle (42), and a water pipe sleeve (41) is provided on one side of the limiting baffle (42), and a sealing strip is provided on the outer wall of the water pipe sleeve (41).

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