Automatic docking system for magnetic self-locking fire hose

Abstract

The invention discloses an automatic docking system for a magnetic self-locking fire hose, which relates to the technical field of fire fighting equipment and is characterized in that a female head is connected to a fire hydrant cabinet through a branch pipe, and an electromagnetic valve is arranged on the branch pipe; a radio frequency transmitting module is arranged in the female head; annular permanent magnet arrays are embedded in the female head and the male head, and the polarities are matched; the fire hose is wound and arranged on the robot dog, one end of the fire hose is connected with the male head, and the other end is connected with the water gun; the robot dog carries a multi-mode sensor system and comprises a laser radar module and a radio frequency signal receiving module. A signal cable is arranged on the outer wall of the fire hose, one end of the signal cable is connected with the robot dog control module, and the other end is connected with the electromagnetic valve control module at the female head; when the fire hose is normally unfolded, the robot dog control module is used for generating a control signal and sending the control signal to the electromagnetic valve control module, the electromagnetic valve control module is used for triggering the electromagnetic valve to be powered on, and the valve is opened. According to the invention, the male head of the fire hose can be automatically butted with the female head of the fire hydrant box.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting equipment, and in particular to a magnetic self-locking fire hose automatic docking system. Background Art

[0002] Building fire rescue faces major challenges: (1) Firefighting height limitation: Traditional fire trucks cannot extinguish fires above 50 meters. (2) Risk of manual dependence: Firefighters need to enter the fire scene to manually connect the water hose, which takes ≥ 30 seconds and is inefficient in emergency scenarios; firefighters need to be close to the fire source, which poses an extremely high safety risk; and the process relies on the firefighters’ physical strength and technical proficiency. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a magnetic self-locking fire hose automatic docking system, which can automatically dock the male head of the fire hose with the female head of the fire hydrant box.

[0004] In order to achieve the purpose of the present invention, the following scheme is proposed: A magnetic self-locking fire hose automatic docking system comprises a robot dog, a female head, a male head and a fire hose.

[0005] The female connector is arranged at one end of the branch pipe, and the other end of the branch pipe is connected to the fire hydrant box. The branch pipe is provided with a solenoid valve. The female connector has a built-in radio frequency transmitting module for transmitting radio frequency signals. The female connector has a plurality of positioning bevel grooves in a circumferential array on the end face, and one end of the positioning bevel groove is connected to a magnetic suction groove. The outer wall of the female connector is provided with an annular tongue groove, and an electromagnet ring is provided in the tongue groove. Both the female connector and the male connector are embedded with an annular permanent magnet array, and the polarities are matched. The male head includes an inner ring, an outer ring and a plurality of latches. The inner diameter of the inner ring is smaller than the inner diameter of the outer ring. The inner ring end surface has a plurality of magnetic flanges arranged in a circumferential array for matching the corresponding magnetic grooves. The outer ring inner wall has a plurality of mounting grooves arranged in a circumferential array. The latches are connected to the mounting grooves through springs. The electromagnet ring is used for magnetically attracting the latches so that the latches are embedded in the latch grooves. The fire hose is coiled and installed on the robot dog. One end of the fire hose is connected to the male connector and the other end is connected to the water gun. The robot dog is equipped with a multi-modal sensor system, including a laser radar module and a radio frequency signal receiving module. The former is used to build a three-dimensional map of the floor and locate the position of the fire hydrant box in real time, and the latter is used to receive radio frequency signals to accurately connect the male connector to the female connector. The outer wall of the fire hose is provided with a signal cable that is wound / unrolled synchronously with the fire hose. One end of the signal cable is connected to the robot dog control module, and the other end is used to connect to the solenoid valve control module at the female head when the male head is connected to the female head. The robot dog has built-in tension sensor and length sensor. The former is used to monitor the stretching state of the signal cable in real time, and the latter is used to monitor the unfolding length of the fire hose. When the fire hose is unfolded normally, the robot dog control module is used to generate a control signal and send it to the solenoid valve control module. The solenoid valve control module is used to trigger the solenoid valve to be energized and the valve to open, and then send a status feedback signal to the robot dog control module to ensure that the fire extinguishing process starts normally.

[0006] Furthermore, the multimodal sensor system also includes a visual recognition module, which is used to identify specific signs on the fire hydrant box through a pre-trained AI model; it is also used to assist in confirming whether the fire hose is fully deployed through an image recognition algorithm.

[0007] Furthermore, when the robot dog control module receives the following three signals: a signal indicating that the length of the fire hose monitored by the length sensor reaches a preset length threshold, a signal indicating that the cable stretching tension monitored by the tension sensor is normal, and a signal indicating that the fire hose is fully deployed by the visual recognition module, the robot dog control module determines that the fire hose is deployed normally.

[0008] Furthermore, if the fire hose is deployed abnormally, the robot dog control module is used to trigger an alarm to sound an alarm.

[0009] Furthermore, the signal cable is provided with a plurality of conductors for transmitting power, control signals and status feedback signals respectively. The outer layer of the signal cable is made of waterproof and flame-retardant materials, and the inner layer is reinforced with tensile-resistant fibers.

[0010] Furthermore, the electromagnet ring is connected to the first electromagnet circuit. When the building fire host receives a dry contact signal, it will send a linkage signal to the electromagnet control module to connect the first electromagnet circuit. The electromagnet ring instantly has magnetic force. The dry contact signal includes a smoke alarm signal, a temperature over-threshold signal or a manual fire alarm button trigger signal. When the building fire host sends a reset signal to the electromagnet control module to disconnect the first electromagnet circuit, the electromagnet ring releases the magnetic force and the tongue shrinks into the installation groove under the action of the spring.

[0011] Furthermore, the outer ring is changed to the female head, and a tongue groove and an electromagnet ring are set on the outer wall of the inner ring, and the tongue groove and the electromagnet ring on the outer wall of the female head are deleted. The docking system also includes a mechanical release structure for mechanically retracting the tongue into the installation groove. The mechanical release structure includes a rotating ring, multiple levers and multiple pull ropes. The rotating ring is rotatably arranged on the outer wall around the female head, and the multiple levers are arranged in a circular array on the rotating ring. One end of the pull rope is connected to the corresponding lever, and the other end passes through the side wall of the outer ring and is connected to the corresponding tongue.

[0012] Furthermore, it also includes a cover plate, which is connected to the end face of the female head by an eccentric hinge. The cover plate has an embedded electromagnet block, which is connected to the second electromagnet circuit. When the building fire host receives a dry contact signal, it sends a linkage signal to the electromagnet block control module to disconnect the second electromagnet circuit. The electromagnet block releases the magnetic force, and the cover plate rotates and droops under the action of gravity to expose the female head. The dry contact signal includes a smoke alarm signal, a temperature exceeding the threshold signal, or a manual fire alarm button trigger signal.

[0013] Furthermore, a sealing ring is provided at the inner right angle formed by the inner ring and the outer ring.

[0014] The beneficial effects of the present invention are: 1. It can realize fully automatic connection of fire hose within 5 seconds, with high efficiency and zero risk, solving the problems of low efficiency, complex operation and potential safety hazards of manual connection of fire hose; 2. Use low-altitude economic equipment such as drones or robot dogs to realize the automated transportation and docking of fire hoses, providing a fast and reliable way to connect fire hoses without human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a female connector, branch pipes and a fire hydrant is shown; Figure 2 A schematic diagram of a female header is shown; Figure 3 A schematic diagram of the positioning inclined slot and the magnetic suction groove is shown; Figure 4 A schematic diagram of the tongue groove on the outer wall of the female head is shown; Figure 5 A schematic diagram of a male connector is shown; Figure 6 A schematic diagram showing the male connector and the female connector after docking; Figure 7 A schematic diagram showing the tab being retracted into the mounting slot; Figure 8 A schematic diagram showing a latch tongue being inserted into a latch tongue groove; Fig. 9 Another schematic diagram of a female connector is shown; Fig.10 Another male connector schematic is shown; Fig.11 A schematic diagram of a rotating ring, a lever and a pull rope is shown; Fig.12 A schematic diagram showing a cover plate covering the end face of a female connector is shown; Fig.13 A schematic diagram showing the cover plate after rotation and drooping. DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 5 As shown, this embodiment provides a magnetic self-locking fire hose automatic docking system, including a robot dog, a female head 1, a male head 2, and a fire hose.

[0017] Specifically, Figure 1 As shown, the female connector 1 is arranged at one end of the branch pipe 11, and the other end of the branch pipe 11 is connected to the original connector in the fire hydrant box 12. The branch pipe 11 is provided with a solenoid valve 111, and the solenoid valve 111 is used to control the opening or closing of the female connector 1.

[0018] Specifically, the female connector 1 has a built-in radio frequency transmitting module for transmitting radio frequency signals to the robot dog.

[0019] Specifically, Figure 2-Figure 4 As shown, a plurality of positioning bevel grooves 13 are arranged in a circular array on the end face of the female head 1, one end of the positioning bevel groove 13 is connected to a magnetic attraction groove 14, and the groove depth of the positioning bevel groove 13 at this end is deeper than the groove depth at the other end. An annular tongue groove 15 is arranged on the outer wall of the female head 1, and an electromagnet ring 16 is arranged in the tongue groove 15.

[0020] Specifically, both the female head 1 and the male head 2 are embedded with an annular permanent magnet array with matching polarity, and the annular permanent magnet array can trigger strong magnetic adsorption when the distance is ≤3cm, so that the female head 1 and the male head 2 can be quickly and effectively docked.

[0021] Under normal circumstances, in order to prevent dust accumulation in the female head 1 and to improve the aesthetics of the female head 1, Fig.12 As shown, it is best to set a cover plate 4 on the end face of the female head 1. More specifically, the cover plate 4 is connected to the end face of the female head 1 in the form of an eccentric hinge. The cover plate 4 is embedded with an electromagnet block, and the electromagnet block is connected to the second electromagnet circuit. When the building fire host receives a dry contact signal (such as a smoke alarm signal, a temperature over-threshold signal, or a manual fire alarm button trigger signal), it will send a linkage signal to the electromagnet block control module to disconnect the second electromagnet circuit, and the electromagnet block releases the magnetic force, such as Fig.13 As shown, the cover plate 4 rotates and droops under the action of gravity to expose the female head 1. At the same time, after the cover plate 4 rotates and droops, it can trigger the LED indicator light to light up red, so as to assist the robot dog in identification later.

[0022] In order to ensure that the cover 4 can rotate and droop smoothly when a fire occurs, the present solution also adds the following two safety redundant designs: first, the electromagnet block has a built-in thermistor spring, which melts due to high temperature, causing the electromagnet block to lose its magnetic force and forcibly release the cover 4; second, a mechanical pull ring is reserved on the side of the cover 4, which can be manually pulled down to open the cover 4 in an emergency.

[0023] When the fire is over, the building fire control host sends a reset signal to the electromagnet block control module. The electromagnet block control module receives the reset signal and reconnects the second electromagnet circuit, and the electromagnet block is instantly filled with magnetic force.

[0024] Specifically, Figure 2 , Figure 5 As shown, the male head 2 includes an inner ring 21, an outer ring 22 and a plurality of latches 23. The outer diameter of the inner ring 21 is consistent with the outer diameter of the outer ring 22, and the inner diameter of the inner ring 21 is smaller than the inner diameter of the outer ring 22. The inner ring 21 end face circumferential array has a plurality of magnetic flanges 26, and the magnetic flanges 26 are used to match the corresponding magnetic grooves 14. The outer ring 22 inner wall circumferential array has a plurality of mounting grooves 24, and the latches 23 are connected to the mounting grooves 24 through springs 25. When the male head 2 is docked with the female head 1, and the magnetic flange 26 matches the corresponding magnetic groove 14, the electromagnet ring 16 is used to magnetically attract the latches 23, so that the latches 23 are embedded in the latch groove 15, so that the male head 2 and the female head 1 are locked by magnetic attraction and mechanical limit, and the state is as shown in FIG. Figure 6 In order to improve the sealing performance of the male connector 2 and the female connector 1, Figure 7 , Figure 8 As shown, a sealing ring 27 is provided at the inner right angle formed by the inner ring 21 and the outer ring 22 .

[0025] The electromagnet ring 16 is connected to the first electromagnet circuit. The electromagnet ring 16 is in a non-magnetic state under normal conditions. When the building fire host receives a dry contact signal (such as a smoke alarm signal, a temperature over-threshold signal, or a manual fire alarm button trigger signal), it will send a linkage signal to the electromagnet control module to connect the first electromagnet circuit, and the electromagnet ring 16 will instantly have magnetic force; when the fire is over, the building fire host sends a reset signal to the electromagnet control module to disconnect the first electromagnet circuit, and the electromagnet ring 16 releases the magnetic force. The tongue 23 shrinks into the mounting groove 24 under the action of the spring 25, so as to release the lock of the tongue 23 on the female head 1.

[0026] In the above solution, the latch tongue 23 is retracted into the mounting groove 24 by releasing the magnetic force of the electromagnet ring 16, thereby releasing the lock. In addition, the latch tongue 23 can also be retracted into the mounting groove 24 by mechanical means, as follows: First, remove the outer ring 22 on the male head 2, set an annular tongue groove 15 on the outer wall of the inner ring 21, and set an electromagnet ring 16 in the tongue groove 15 to obtain the following Fig.10 Another male head 2 is shown, and then the outer ring 22 is changed to the female head 1, and the tongue groove 15 and the electromagnet ring 16 on the outer wall of the female head 1 are deleted, so as to obtain Fig. 9 In another female connector 1 shown, the inner diameter of the outer ring 22 is larger than the inner diameter of the female connector 1, and the outer diameter of the outer ring 22 is consistent with the outer diameter of the female connector 1, as shown in FIG. Fig. 9As shown, the mechanical release structure includes a rotating ring 31, a plurality of levers 32 and a plurality of pull ropes 33. The rotating ring 31 is rotatably arranged on the outer wall around the female head 1. The plurality of levers 32 are arranged in a circular array on the rotating ring 31. One end of the pull rope 33 is connected to the corresponding lever 32, and the other end of the pull rope 33 passes through the side wall of the outer ring 22 and is connected to the corresponding latch 23.

[0027] Under normal conditions, the pull cord 33 is in a naturally relaxed state, and the latch tongue 23 is retracted into the mounting groove 24 under the action of the spring 25; when the male connector 2 is docked with the female connector 1, the electromagnet ring 16 magnetically attracts the latch tongue 23 so that the latch tongue 23 is embedded in the latch tongue groove 15. Fig.11 After the fire is over, the firefighter rotates the rotating ring 31 by hand, the pull rope 33 is stretched, and the tongue 23 is retracted into the mounting groove 24.

[0028] Specifically, the fire hose is wound around the robot dog. Since both the fire hose and the robot dog belong to the prior art, the attached drawings do not specifically show the structure of the fire hose and the robot dog. It should be noted that one end of the fire hose is connected to the male connector 2, and the other end of the fire hose is connected to the water gun. The robot dog is equipped with a multimodal sensor system, which includes a laser radar module, a radio frequency signal receiving module and a visual recognition module. The laser radar module is used to construct a three-dimensional map of the floor and locate the position of the fire hydrant box 12 in real time; the radio frequency signal receiving module is used to receive the radio frequency signal emitted by the female connector 1, and accurately locate the position of the female connector 1 according to the radio frequency signal strength indication and the arrival time difference algorithm, so that the male connector 2 can accurately dock with the female connector 1. In addition, a servo motor can be set on the robot dog, and the servo motor is connected to the male connector 2 to adjust the posture of the male connector 2; the visual recognition module is used to identify specific logos on the fire hydrant box 12 through a pre-trained AI model, such as a QR code, a reflective cursor sticker, etc. The function of the visual recognition module is: when the radio frequency signal is interfered with, the robot dog switches to the visual assisted positioning mode and optimizes the path through edge computing.

[0029] The robot dog is also equipped with a redundant design module. When the male head 2 fails to dock with the female head 1, the robot dog automatically rolls back and retries, triggering remote manual intervention after a maximum of three times.

[0030] Specifically, a signal cable of the same length is provided on the outer wall of the fire hose, and the fire hose and the signal cable are wound / unrolled synchronously. One end of the signal cable is connected to the robot dog control module through a waterproof connector, and the other end of the signal cable is used to connect the solenoid valve control module at the female head 1 when the male head 2 is connected to the female head 1, so as to ensure the continuity of signal transmission; a plurality of wires are provided in the signal cable, which are used to transmit power supply, control signal and status feedback signal respectively. The outer layer of the signal cable is made of waterproof and flame-retardant material, such as TPU, and the inside of the signal cable is reinforced with tensile-resistant fiber to ensure that the signal cable is not broken when the fire hose is unfolded. If the signal cable transmission is interrupted, the robot dog can also switch to wireless signal for emergency control.

[0031] Specifically, the robot dog has built-in tension sensors and length sensors. The tension sensor is used to monitor the stretching state of the signal cable in real time, and the length sensor is used to monitor the length of the fire hose. When the robot dog control module receives the following two signals: the signal that the length of the fire hose monitored by the length sensor reaches the preset length threshold, and the signal that the tension of the signal cable monitored by the tension sensor is normal, the robot dog control module determines that the fire hose is normally deployed; after the fire hose is normally deployed, the robot dog control module is used to generate a control signal and send it to the solenoid valve control module, which is used to trigger the solenoid valve 111 to energize, open the valve, and let water flow into the fire hose. Then the solenoid valve control module sends a status feedback signal to the robot dog control module to ensure that the fire extinguishing process starts normally.

[0032] One thing to explain here is that when the tension state of the signal cable is monitored by the tension sensor, it can be used by the robot dog to assist in determining whether the fire hose is deployed normally. It can also be used to guide the robot dog to deploy the fire hose and prevent the fire hose from twisting and folding.

[0033] As mentioned above: the visual recognition module is used to identify the specific logo on the fire hydrant box 12 through the pre-trained AI model. In the process of deploying the fire hose, the visual recognition module is also used to assist in confirming whether the fire hose is fully deployed through the image recognition algorithm. In order to improve safety, this solution adds another verification mechanism. Before the solenoid valve 111 is opened, the visual recognition module determines that the fire hose is fully deployed, and the robot dog control module determines that the fire hose is deployed normally, thereby ensuring that the deployment state of the fire hose is correct.

[0034] If the signal cable tension is too loose or too tight, or the length of the fire hose does not meet the preset length threshold, the robot dog control module is used to trigger the alarm and trigger backup fire extinguishing plans, such as remote manual intervention.

[0035] Fire extinguishing process: S1. Use drones to shoot cannons to break windows and transport robot dogs to the fire-affected floors of buildings to reduce the risk of casualties; S2, the robot dog autonomously locates the fire hydrant box 12, the cover plate 4 has been rotated and drooped in advance, exposing the female head 1; the radio frequency signal emitted by the female head 1 will guide the male head 2 on the robot dog to automatically magnetically dock with the female head 1 (similar to the charging interface of the sweeping robot), the electromagnet ring 16 has been pre-filled with magnetic force, and the electromagnet ring 16 will magnetically attract the tongue 23, so that the tongue 23 is embedded in the tongue groove 15, so that the male head 2 and the female head 1 are locked by magnetic attraction and mechanical limit; S3. The robot dog moves to the fire extinguishing point, and the fire hose is automatically unfolded during the movement of the robot dog; when the robot dog control module receives a signal that the unfolded length of the fire hose reaches the preset length threshold, a signal that the tension of the signal cable is normal, and a signal that the visual recognition module confirms that the fire hose is fully unfolded, the robot dog control module determines that the fire hose is unfolded normally, and then the robot dog control module generates a control signal and sends it to the solenoid valve control module, the solenoid valve control module triggers the solenoid valve 111 to energize, the valve opens, water flows into the fire hose, and then the solenoid valve control module sends a status feedback signal to the robot dog control module to ensure that the fire extinguishing process starts normally.

[0036] In the existing technology, the efficiency of fire hose docking is low, and manual operation takes more than 30 seconds, which is prone to errors. Firefighters need to be close to the fire source, which is extremely risky. This solution achieves fully automatic docking of fire hoses within 5 seconds, which is highly efficient. The entire process is unmanned and the risk is close to zero.

[0037] The above embodiments are only used to illustrate the technical ideas and features of the present invention, and are not intended to be the only or limit the present invention. It should be understood by those skilled in the art that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention all fall within the scope of protection of the present invention.

Claims

1. A magnetic self-locking fire hose automatic docking system, characterized in that: Includes a robot dog, a female head (1), a male head (2), and a fire hose; The female head (1) is arranged at one end of the branch pipe (11), and the other end of the branch pipe (11) is connected to the fire hydrant box (12). The branch pipe (11) is provided with a solenoid valve (111); the female head (1) has a built-in radio frequency transmission module for transmitting radio frequency signals; the female head (1) has a plurality of positioning inclined grooves (13) in a circular array on the end surface, and one end of the positioning inclined groove (13) is connected to a magnetic attraction groove (14); the outer wall of the female head (1) is provided with an annular tongue groove (15), and an electromagnet ring (16) is provided in the tongue groove (15); the female head (1) and the male head (2) are both embedded with an annular permanent magnet array, and the polarities thereof are matched; The male head (2) comprises an inner ring (21), an outer ring (22) and a plurality of latching tongues (23). The inner diameter of the inner ring (21) is smaller than the inner diameter of the outer ring (22). The inner ring (21) has a plurality of magnetic flanges (26) arranged in a circumferential array on the end surface thereof, which are used to match the corresponding magnetic recesses (14). The outer ring (22) has a plurality of mounting grooves (24) arranged in a circumferential array on the inner wall thereof. The latching tongues (23) are connected to the mounting grooves (24) via springs (25). The electromagnet ring (16) is used to magnetically attract the latching tongues (23) so that the latching tongues (23) are embedded in the latching tongue recesses (15). The fire hose is in a coiled shape and is arranged on the robot dog, one end of the fire hose is connected to a male connector (2), and the other end is connected to a water gun; the robot dog is equipped with a multi-modal sensor system, including a laser radar module and a radio frequency signal receiving module, the former is used to construct a three-dimensional map of the floor and locate the position of the fire hydrant box (12) in real time, and the latter is used to receive radio frequency signals so that the male connector (2) can be accurately connected to the female connector (1); The outer wall of the fire hose is provided with a signal cable which is wound / unrolled synchronously with the fire hose, one end of the signal cable is connected to the robot dog control module, and the other end is used to connect to the solenoid valve control module at the female head (1) when the male head (2) is connected to the female head (1); the robot dog has a built-in tension sensor and a length sensor, the former is used to monitor the tension state of the signal cable in real time, and the latter is used to monitor the unfolded length of the fire hose. When the fire hose is unfolded normally, the robot dog control module is used to generate a control signal and send it to the solenoid valve control module, the solenoid valve control module is used to trigger the solenoid valve (111) to be energized, the valve is opened, and then a status feedback signal is sent to the robot dog control module to ensure that the fire extinguishing process is started normally.

2. The magnetic self-locking fire hose automatic docking system according to claim 1 is characterized in that: The multimodal sensor system also includes a visual recognition module for identifying a specific mark on the fire hydrant box (12) through a pre-trained AI model; and for assisting in confirming whether the fire hose is fully deployed through an image recognition algorithm.

3. The magnetic self-locking fire hose automatic docking system according to claim 2 is characterized in that: When the robot dog control module receives the following three signals: the signal that the length of the fire hose monitored by the length sensor reaches the preset length threshold, the signal that the cable tension monitored by the tension sensor is normal, and the signal that the visual recognition module determines that the fire hose is fully deployed, the robot dog control module determines that the fire hose is deployed normally.

4. The magnetic self-locking fire hose automatic docking system according to claim 1 is characterized in that: If the fire hose is deployed abnormally, the robot dog control module is used to trigger the alarm.

5. The magnetic self-locking fire hose automatic docking system according to claim 1 is characterized in that: The signal cable is equipped with multiple wires, which are used to transmit power, control signals and status feedback signals. The outer layer of the signal cable is made of waterproof and flame-retardant materials, and the inner layer is reinforced with tensile-resistant fibers.

6. The magnetic self-locking fire hose automatic docking system according to claim 1 is characterized in that: The electromagnet ring (16) is connected to the first electromagnet circuit. When the building fire host receives a dry contact signal, it sends a linkage signal to the electromagnet control module to connect the first electromagnet circuit. The electromagnet ring (16) instantly has magnetic force. The dry contact signal includes a smoke alarm signal, a temperature over-threshold signal or a manual fire alarm button trigger signal. When the building fire host sends a reset signal to the electromagnet control module to disconnect the first electromagnet circuit, the electromagnet ring (16) releases the magnetic force, and the latch (23) shrinks into the mounting groove (24) under the action of the spring (25).

7. The magnetic self-locking fire hose automatic docking system according to claim 1 is characterized in that: The outer ring (22) is replaced on the female head (1), a tongue groove (15) and an electromagnet ring (16) are provided on the outer wall of the inner ring (21), and the tongue groove (15) and the electromagnet ring (16) on the outer wall of the female head (1) are deleted. The docking system also includes a mechanical release structure for mechanically retracting the tongue (23) into the installation groove (24). The mechanical release structure includes a rotating ring (31), a plurality of levers (32) and a plurality of pull ropes (33). The rotating ring (31) is rotatably arranged on the outer wall around the female head (1), and the plurality of levers (32) are arranged in a circular array on the rotating ring (31). One end of the pull rope (33) is connected to the corresponding lever (32), and the other end passes through the side wall of the outer ring (22) and is connected to the corresponding tongue (23).

8. The magnetic self-locking fire hose automatic docking system according to claim 1 is characterized in that: The invention also comprises a cover plate (4), which is connected to the end face of the female head (1) by means of an eccentric hinge, and an electromagnet block is embedded in the cover plate (4), and the electromagnet block is connected to the second electromagnet circuit. When the building fire host receives a dry contact signal, it sends a linkage signal to the electromagnet block control module to disconnect the second electromagnet circuit, and the electromagnet block releases the magnetic force. The cover plate (4) rotates downward under the action of gravity and exposes the female head (1). The dry contact signal comprises one or more of a smoke alarm signal, a temperature over-threshold signal, or a manual fire alarm button trigger signal.

9. The magnetic self-locking fire hose automatic docking system according to claim 1 is characterized in that: A sealing ring (27) is provided at the inner right angle formed by the inner ring (21) and the outer ring (22).

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