Fire hose quick connector with anti-falling locking structure

Abstract

The invention discloses a fire hose quick connector with an anti-falling locking structure, and relates to the field of fire-fighting equipment, the fire hose quick connector comprises a fire hose, and further comprises a plug mounted at one end of the fire hose; the bearing head is mounted at the other end of the fire hose and is used for being matched with plugs of other fire hoses; the promoting mechanism is used for enabling plugs of other fire hoses to reach designated positions in the bearing head; the sealing mechanism is used for sealing the joint of the plug and the socket; the driving mechanism is used for driving the promoting mechanism to operate. According to the fire hose quick connector with the anti-falling locking structure, the problem that butt joint is not in place easily during butt joint of existing fire hoses is solved, the reliability of connection between the two fire hoses is guaranteed, butt joint operation is simple, the butt joint efficiency between the fire hoses is improved, and the safety of the fire hoses is improved. And the connecting position between the plug circulation opening and the positioning groove can be sealed, and the sealing performance of connection between the two fire hoses is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting equipment technology, and specifically to a quick connector for fire hoses with an anti-detachment locking structure. Background Technology

[0002] Fire hoses are flexible hoses used to transport high-pressure water or flame-retardant liquids such as foam. Both ends of a fire hose have metal connectors that can be connected to another hose to extend the distance or to a nozzle to increase the liquid spray pressure. Fire hoses are flexible hoses used for water delivery at fire scenes. A fire hose connector is disclosed in patent publication number CN204459567U, comprising a cylindrical connector body, which includes a large connector end and a small connector end. The connector wall of the large connector end is provided with a locking head with a locking groove along the axial direction. The root of the connector wall of the large connector end is provided with a radially arranged receiving groove that is offset from the position of the locking head and can cooperate with the head of the locking head. A sealing ring gasket is provided on the inner ring of the large connector end. The small connector end is the fire hose connection end. The surface of the connector body is also provided with a galvanized layer. The aforementioned technologies have the following drawbacks: the connection of fire hoses is difficult, and incomplete connection is prone to occur during connection, making it difficult to ensure the reliability of the connection between the two fire hoses, as well as the sealing of the connection between the two fire hoses. Summary of the Invention

[0003] The purpose of this invention is to provide a quick-connect coupling for fire hoses with an anti-detachment locking structure, in order to solve the problem that in the prior art, it is usually necessary to select and connect a corresponding number of fire hoses together according to the length of the fire hoses laid. The existing fire hose connection is difficult and prone to misalignment during connection, which makes it difficult to ensure the reliability of the connection between two fire hoses, as well as the sealing of the connection between two fire hoses.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a quick connector for fire hoses with an anti-detachment locking structure, comprising a fire hose and a plug, which is installed at one end of the fire hose; A connector, installed at the other end of a fire hose, is used to mate with the plugs of other fire hoses; Alignment pins are fixed to the outer wall of the plug, and alignment grooves are provided on the inner wall of the socket. When the socket and the plug are inserted, the alignment pins on the plug are aligned with the alignment grooves on the socket and inserted. A facilitator, installed inside the socket, is used to allow the plugs of other fire hoses to reach a designated position inside the socket. A sealing mechanism, which is installed inside the socket and cooperates with the facilitating mechanism, is used to seal the connection between the plug and the socket; A drive mechanism, which is mounted on a connector, is used to drive and promote the operation of the mechanism.

[0005] Furthermore, the plug is provided with multiple combination slots, which are evenly distributed along the annular trajectory of the plug. Each combination slot includes a driven slot and an adapter slot formed on the outer wall of the plug. The driven slot and the adapter slot are connected. The driven slot has a right-angled triangular structure, and the adapter slot has a rectangular structure.

[0006] Furthermore, one end of the connector is connected to the fire hose, and the other end of the connector is provided with a socket.

[0007] Furthermore, the promoting mechanism includes a positioning groove formed on the inner wall of the receiving joint and an oil cavity formed inside the receiving joint. The oil cavity is filled with hydraulic oil. Both the positioning groove and the oil cavity are annular structures, and the positioning groove is located inside the oil cavity. The oil cavity is connected to the driving mechanism. Multiple through slots are provided between the positioning groove and the oil cavity. The multiple through slots are evenly distributed along the annular trajectory of the positioning groove. A first piston and a limiting block are slidably connected inside the through slot. The first piston and the limiting block are fixed together. The limiting block is respectively engaged with the driven groove and the adapter groove.

[0008] Furthermore, a plurality of first springs are fixedly connected to the outer wall of the first piston, and the other end of the first spring is fixedly connected to the inner wall of the oil chamber.

[0009] Furthermore, the sealing mechanism includes a sealing gasket installed inside the positioning groove. The sealing gasket has an annular structure and abuts against the inner wall of the positioning groove on the side near the fire hose.

[0010] Furthermore, the drive mechanism includes an oil cylinder fixed inside the receiving joint, a second piston installed inside the oil cylinder, a slide rod slidably installed inside the oil cylinder, and a conduit installed at the bottom of the oil cylinder. The other end of the conduit is connected to the oil cavity. The top of the oil cylinder extends to the outside of the receiving joint, and the top of the slide rod extends to the outside of the oil cylinder and is fixedly connected to a pressing block.

[0011] Furthermore, a second spring is fixedly installed at the bottom of the second piston, and the bottom end of the second spring is fixedly connected to the inner wall of the bottom of the oil cylinder. A fixed seat is fixedly installed at the top of the receiving joint, and a sliding groove is opened inside the fixed seat. A locking block is slidably installed inside the sliding groove. One end of the locking block extends to the outer wall of the fixed seat and has an oblique groove. A plurality of third springs are fixedly installed at the other end of the locking block, and the other end of the third spring is fixedly connected to the inner wall of the sliding groove.

[0012] Compared with the prior art, the quick connector for fire hoses with anti-detachment locking structure provided by the present invention has the following beneficial effects: 1. When connecting two fire hoses, by promoting the cooperation between the components of the mechanism and the drive mechanism, the plug on one fire hose can be inserted into the designated position inside the connector of the other fire hose, and the plug is limited after reaching the designated position. This solves the problem that the existing fire hoses are prone to misconnection when connecting, ensures the reliability of the connection between the two fire hoses, and the connection operation is simple, improving the efficiency of connecting fire hoses. 2. During the connection process between the plug and the socket, one end of the plug is pressed against the sealing gasket, causing the sealing gasket to deform, thereby sealing the connection between the plug opening and the positioning groove, ensuring the sealing performance of the connection between the plug and the socket, and further ensuring the sealing performance of the connection between the two fire hoses. Attached Figure Description

[0013] 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 invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 This is a schematic diagram of the drive mechanism structure of the present invention; Figure 6 This is a schematic diagram of the connection between the two fire hose structures of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Fire hose; 2. Plug; 21. Driven groove; 22. Adapter groove; 3. Socket; 31. Socket; 4. Promoting mechanism; 41. Positioning groove; 42. Oil chamber; 43. Through groove; 44. First piston; 45. Limiting block; 46. First spring; 5. Sealing mechanism; 51. Sealing gasket; 6. Drive mechanism; 61. Oil cylinder; 62. Second piston; 63. Slide rod; 64. Guide tube; 65. Pressing block; 66. Second spring; 67. Fixing seat; 68. Slide groove; 69. Locking block; 610. Third spring; 611. Angled groove. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Example: Please refer to Figures 1-6 A quick connector for fire hoses with an anti-detachment locking structure includes a fire hose 1 and a plug 2, which is installed at one end of the fire hose 1. The plug 2 is provided with multiple combination grooves, which are evenly distributed along the annular trajectory of the plug 2. The combination groove includes a driven groove 21 and an adapter groove 22 opened on the outer wall of the plug 2. The driven groove 21 and the adapter groove 22 are connected. The driven groove 21 has a right-angled triangular structure, and the adapter groove 22 has a rectangular structure. When the plug 2 of another fire hose 1 is inserted into the socket 3 of the current fire hose 1, each combination groove enters the interior of the socket 3. At this time, the driven groove 21 is located on the moving path of the limiting block 45. When the limiting block 45 moves to abut against the driven groove 21, the driven plug 2 moves deeper into the socket 3, that is, towards the sealing gasket 51. When the limiting block 45 moves completely into the interior of the adapter groove 22, the plug 2 reaches the designated position.

[0018] The connector 3 is installed at the other end of the fire hose 1 and is used to cooperate with the plug 2 of other fire hoses 1. One end of the connector 3 is connected to the fire hose 1, and the other end of the connector 3 is provided with a socket 31. The socket 31 is provided for the plug 2 of another fire hose 1 to be inserted into the connector 3. Alignment pins are fixed to the outer wall of plug 2, and alignment grooves are provided on the inner wall of connector 3. When connector 3 is inserted into plug 2, the alignment pins on plug 2 are aligned with the alignment grooves on connector 3 and inserted, so that each combination groove is aligned with the corresponding limiting block 45. After connector 3 on fire hose 1 is connected to plug 2 on another fire hose 1, the two fire hoses 1 are in a connected state.

[0019] The facilitating mechanism 4 is installed inside the connector 3 to allow the plug 2 of other fire hoses 1 to reach the designated position inside the connector 3. The facilitating mechanism 4 includes a positioning groove 41 opened on the inner wall of the connector 3 and an oil cavity 42 opened inside the connector 3. The oil cavity 42 is filled with hydraulic oil. Both the positioning groove 41 and the oil cavity 42 are annular structures, and the positioning groove 41 is located inside the oil cavity 42. The oil cavity 42 is connected to the drive mechanism 6. Multiple through grooves 43 are provided between the positioning groove 41 and the oil cavity 42. The multiple through grooves 43 are evenly distributed along the annular trajectory of the positioning groove 41. A first piston 44 and a limiting block 45 are slidably connected inside the through groove 43. The first piston 44 and the limiting block 45 are fixed together. The limiting block 45 is respectively engaged with the driven groove 21 and the adapter groove 22. The plug 2 of another fire hose 1 is manually inserted into the socket 3 of the current fire hose 1. The plug 2 is then inserted into the positioning groove 41, and each combination groove enters the positioning groove 41. At this time, the driven groove 21 is located on the moving path of the limiting block 45. However, the plug 2 has not yet fully reached the designated position. By inputting hydraulic oil into the oil chamber 42, the increase in hydraulic oil in the oil chamber 42 pushes the first piston 44 inside each through groove 43 to move towards the positioning groove 41. Each limiting block 45 moves synchronously to the corresponding driven groove 21. When the limiting block 45 moves to abut against the driven groove 21, it drives the plug 2 to move deeper into the socket 3, that is, towards the sealing gasket 51. When the limiting block 45 has fully moved into the fitting groove 22, the plug 2 reaches the designated position.

[0020] Multiple first springs 46 are fixed to the outer wall of the first piston 44, and the other end of the first spring 46 is fixed to the inner wall of the oil chamber 42. The first spring 46 is set to limit the initial position of the first piston 44 and the limiting block 45, so as to prevent the limiting block 45 from entering the interior of the positioning groove 41 before the fire hose 1 is installed, which would affect the insertion of the plug 2 into the positioning groove 41. The first spring 46 is also used to control the reduction of hydraulic oil inside the oil chamber 42 when the connection between the two fire hoses 1 is disconnected. The rebound force of the first spring 46 drives the first piston 44 and the limiting block 45 to reset, so that the limiting block 45 moves out of the positioning groove 41, thereby facilitating the removal of the plug 2.

[0021] The sealing mechanism 5 is installed inside the connector 3 and cooperates with the promoting mechanism 4 to seal the connection between the plug 2 and the connector 3. The sealing mechanism 5 includes a sealing gasket 51 installed inside the positioning groove 41. The sealing gasket 51 has an annular structure and abuts against the inner wall of the positioning groove 41 on the side near the fire hose 1. When the limiting block 45 moves to abut against the driven groove 21, the drive plug 2 moves deeper into the connector 3, that is, towards the sealing gasket 51. When the limiting block 45 has completely moved into the interior of the adapter groove 22, the plug 2 reaches the designated position. During this process, one end of the plug 2 abuts against the sealing gasket 51, causing the sealing gasket 51 to deform, thereby completely sealing the connection between the flow port of the plug 2 and the positioning groove 41, ensuring the sealing performance of the connection between the plug 2 and the connector 3, and further ensuring the sealing performance of the connection between the two fire hoses 1.

[0022] A drive mechanism 6, mounted on the connector 3, drives the actuating mechanism 4. The drive mechanism 6 includes an oil cylinder 61 fixed inside the connector 3, a second piston 62 installed inside the oil cylinder 61, a slide rod 63 slidably installed inside the oil cylinder 61, and a conduit 64 installed at the bottom of the oil cylinder 61. The other end of the conduit 64 is connected to the oil chamber 42. The top of the oil cylinder 61 extends to the outside of the connector 3, and the top of the slide rod 63 extends to the outside of the oil cylinder 61 and is fixedly connected to a pressing block 65. The oil cylinder 61 is filled with hydraulic oil, and this hydraulic oil is located in the second... At the bottom of piston 62, a second spring 66 is fixedly installed. The bottom end of the second spring 66 is fixedly connected to the inner wall of the bottom of oil cylinder 61. A fixed seat 67 is fixedly installed on the top of the receiving joint 3. A sliding groove 68 is opened inside the fixed seat 67. A locking block 69 is slidably installed inside the sliding groove 68. One end of the locking block 69 extends to the outer wall of the fixed seat 67 and has an inclined groove 611. A plurality of third springs 610 are fixedly installed on the other end of the locking block 69. The other end of the third spring 610 is fixedly connected to the inner wall of the sliding groove 68. When hydraulic oil needs to be introduced into the oil chamber 42, pressing the pressing block 65 causes the sliding rod 63 to move downwards, which in turn causes the second piston 62 to move downwards along the inner wall of the oil cylinder 61, thereby pushing out the hydraulic oil inside the oil cylinder 61. The hydraulic oil enters the oil chamber 42 through the conduit 64, driving the first piston 44 and the limiting block 45 to move towards the positioning groove 41. When the pressing block 65 abuts against the inclined groove 611, it drives the locking block 69 to move to the right. When the pressing block 65 passes the locking block 611, the locking block 69 moves to the right. At 9 o'clock, the rebound force of the third spring 610 drives the locking block 69 to move to the top of the pressing block 65, locking the pressing block 65. When it is necessary to extract some hydraulic oil from the oil chamber 42, the locking block 69 is manually driven to move to the right. After the locking block 69 disengages from the top of the pressing block 65, the rebound force of the second spring 66 drives the slide rod 63 and the second piston 62 to move upward along the inner wall of the oil cylinder 61, thereby drawing some hydraulic oil from the oil chamber 42 into the oil cylinder 61 through the conduit 64.

[0023] Working principle: When the connector 3 and plug 2 are connected, the alignment pin on plug 2 is aligned with the alignment groove on connector 3 and inserted. Plug 2 is then inserted into the positioning groove 41, and the various combination grooves enter the positioning groove 41. At this time, the driven groove 21 is located on the moving path of the limiting block 45. However, plug 2 has not yet fully reached the designated position. By pressing the pressing block 65, the sliding rod 63 is moved downward, which in turn moves the second piston 62 downward along the inner wall of the oil cylinder 61, thereby pushing out the hydraulic oil inside the oil cylinder 61. The hydraulic oil enters the oil chamber 42 through the conduit 64, driving the first piston 44 and the limiting block 45 to move towards the positioning groove 41. When the pressing block 65 abuts against the inclined groove 611, it drives the locking block 69 to move to the right. When the pressing block 65 passes the locking block 69, the rebound force of the third spring 610 moves the locking block... Move 69 to the top of the pressing block 65 and lock the pressing block 65. As the hydraulic oil in the oil chamber 42 increases, it pushes the first piston 44 inside each through groove 43 to move towards the positioning groove 41. Each limit block 45 moves synchronously to the inside of the corresponding driven groove 21. When the limit block 45 moves to abut against the driven groove 21, the drive plug 2 moves towards the depth of the receiving joint 3, that is, towards the sealing gasket 51. When the limit block 45 moves completely into the inside of the fitting groove 22, the plug 2 reaches the designated position. During this process, one end of the plug 2 abuts against the sealing gasket 51, causing the sealing gasket 51 to deform, thereby completely sealing the connection between the flow port of the plug 2 and the positioning groove 41, ensuring the sealing performance of the connection between the plug 2 and the receiving joint 3, and further ensuring the sealing performance of the connection between the two fire hoses 1, thus completing the docking between the two fire hoses 1.

[0024] When disconnecting the two fire hoses 1, the locking block 69 is manually driven to move to the right. After the locking block 69 disengages from the top of the pressing block 65, the rebound force of the second spring 66 drives the slide rod 63 and the second piston 62 to move upward along the inner wall of the oil cylinder 61. This draws some of the hydraulic oil inside the oil chamber 42 into the oil cylinder 61 through the conduit 64. The hydraulic oil inside the oil chamber 42 is controlled to decrease. The rebound force of the first spring 46 drives the first piston 44 and the limiting block 45 to reset, so that the limiting block 45 moves out of the positioning groove 41, making it easier to remove the plug 2 and separate the two fire hoses 1.

[0025] It should be noted that the device structure and accompanying drawings of this invention mainly describe the principle of the invention. The technical details of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art, understanding the principles of the invention, can clearly understand the specifics of its power mechanism, power supply system, and control system. The control method described in the application is automatic control via a controller, and the controller's control circuit can be implemented through simple programming by those skilled in the art. The above description only illustrates certain exemplary embodiments of the invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the 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 this invention.

[0026] In the description of this invention, it should be understood that the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description. They are not intended to 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 invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A quick-connect coupling for fire hoses with an anti-detachment locking structure, comprising a fire hose (1), characterized in that, It also includes a plug (2), which is installed at one end of the fire hose (1); The connector (3) is installed at the other end of the fire hose (1) and is used to mate with the plug (2) of other fire hoses (1); A facilitator (4), which is installed inside the connector (3), is used to allow the plug (2) of other fire hoses (1) to reach a designated position inside the connector (3); A sealing mechanism (5), which is installed inside the socket (3) and cooperates with the promoting mechanism (4), is used to seal the connection between the plug (2) and the socket (3); The drive mechanism (6), which is mounted on the connector (3), is used to drive the actuation mechanism (4) to operate.

2. A quick-connect fire hose coupling with an anti-detachment locking structure according to claim 1, characterized in that, The plug (2) is provided with multiple combination slots, which are evenly distributed along the annular trajectory of the plug (2). The combination slots include a driven slot (21) and an adapter slot (22) opened on the outer wall of the plug (2). The driven slot (21) and the adapter slot (22) are connected. The driven slot (21) is a right-angled triangle structure, and the adapter slot (22) is a rectangular structure.

3. A quick-connect coupling for fire hoses with an anti-detachment locking structure according to claim 2, characterized in that, One end of the connector (3) is connected to the fire hose (1), and the other end of the connector (3) is provided with a socket (31).

4. A quick-connect fire hose coupling with an anti-detachment locking structure according to claim 3, characterized in that, The promoting mechanism (4) includes a positioning groove (41) opened on the inner wall of the receiving joint (3) and an oil cavity (42) opened inside the receiving joint (3). The positioning groove (41) and the oil cavity (42) are both annular structures, and the positioning groove (41) is located inside the oil cavity (42). The oil cavity (42) is connected to the driving mechanism (6). Multiple through slots (43) are provided between the positioning groove (41) and the oil cavity (42). The multiple through slots (43) are evenly distributed along the annular trajectory of the positioning groove (41). A first piston (44) and a limiting block (45) are slidably connected inside the through slot (43). The first piston (44) and the limiting block (45) are fixed together. The limiting block (45) cooperates with the driven groove (21) and the adapter groove (22) respectively.

5. A quick-connect coupling for fire hoses with an anti-detachment locking structure according to claim 4, characterized in that, Multiple first springs (46) are fixed to the outer wall of the first piston (44), and the other end of the first spring (46) is fixed to the inner wall of the oil chamber (42).

6. A quick-connect coupling for fire hoses with an anti-detachment locking structure according to claim 5, characterized in that, The sealing mechanism (5) includes a sealing gasket (51) installed inside the positioning groove (41). The sealing gasket (51) has an annular structure and abuts against the inner wall of the positioning groove (41) on the side near the fire hose (1).

7. A quick-connect coupling for fire hoses with an anti-detachment locking structure according to claim 6, characterized in that, The drive mechanism (6) includes an oil cylinder (61) fixed inside the receiving joint (3), a second piston (62) installed inside the oil cylinder (61), a slide rod (63) slidably installed inside the oil cylinder (61), and a conduit (64) installed at the bottom of the oil cylinder (61). The other end of the conduit (64) is connected to the oil chamber (42). The top of the oil cylinder (61) extends to the outside of the receiving joint (3), and the top of the slide rod (63) extends to the outside of the oil cylinder (61) and is fixedly connected to a pressing block (65).

8. A quick-connect coupling for fire hoses with an anti-detachment locking structure according to claim 7, characterized in that, A second spring (66) is fixedly installed at the bottom of the second piston (62). The bottom end of the second spring (66) is fixedly connected to the inner wall of the bottom of the oil cylinder (61). A fixed seat (67) is fixedly installed at the top of the receiving joint (3). A sliding groove (68) is provided inside the fixed seat (67). A locking block (69) is slidably installed inside the sliding groove (68). One end of the locking block (69) extends to the outer wall of the fixed seat (67) and is provided with an oblique groove (611). A plurality of third springs (610) are fixedly installed at the other end of the locking block (69). The other end of the third spring (610) is fixedly connected to the inner wall of the sliding groove (68).

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