An automatic tracking and positioning jet fire extinguishing device

Abstract

The present invention relates to the field of fire protection, and specifically to an automatic tracking and positioning jet fire extinguishing device, which has a structure including a machine head and a jet pipe. A nozzle assembly is installed at the front end of the jet pipe, and the nozzle assembly includes a rack and a plurality of nozzle pipes. The plurality of nozzle pipes are installed on the rack. A switching assembly is also installed at the front end of the jet pipe. The switching assembly is connected to the nozzle assembly and is used to drive the switching of different nozzle pipes to be connected to the jet pipe. The projection of the rack on a plane perpendicular to the axis of the tube head is in a rounded N-edge shape. The rack is provided with a swivel section at the rounded corner and a straight section at the straight edge. In the present invention, a plurality of nozzle pipes of different forms are arranged on the rack of the nozzle assembly in front of the jet pipe, and the rack is driven by the switching assembly to be moved and switched, so that nozzle pipes of different forms are connected to the jet pipe. Different spraying forms can be used to extinguish fires when dealing with different fire situations, so that the fire extinguishing operation is more targeted and a better fire extinguishing effect is obtained.

Description

Technical Field

[0001] The invention relates to the field of fire protection, in particular to an automatic tracking and positioning jet fire extinguishing device. Background Art

[0002] The automatic tracking and positioning jet fire extinguishing device adopts heat source sensing technology, signal processing technology, communication control technology, etc. When the fire source is monitored, the fire tracking water cannon will automatically track the heat source area according to the sensor data and perform water spraying and fire extinguishing operations, realizing automatic monitoring, tracking and fire extinguishing of the fire.

[0003] However, fire extinguishing devices are usually only equipped with one type of nozzle. When facing different fire conditions and fire sources, it is difficult to promptly adopt a more suitable nozzle type to extinguish the fire. For example, a direct spray nozzle is difficult to cover fire sources that are in a sheet or long strip state. At the same time, some fire sources have contents that are easy to splash. When a fire occurs, it is easy to expand the fire area after splashing around. To deal with this situation, existing fire extinguishing devices usually use a machine head to drive the direct spray nozzle to move and spray, but the effect is average and it is difficult to effectively prevent the spread of the fire. Summary of the invention

[0004] In view of the above problems, the present invention provides an automatic tracking and positioning jet fire extinguishing device, the structure of which includes a machine head and a jet pipe installed on the machine head, the jet pipe is used to send fluid outward, wherein a nozzle assembly is installed at the front end of the jet pipe, the nozzle assembly includes a plurality of nozzle pipes, and a switching assembly is also installed at the front end of the jet pipe, the switching assembly is connected to the nozzle assembly and is used to drive the switching of different nozzle pipes to be connected to the jet pipe; the nozzle assembly also includes a rack, a plurality of nozzle pipes are installed on the rack, a pipe head is provided at the front end of the jet pipe, and the rack is movably installed On the tube head, a contact portion is provided at the front end of the tube head for abutting against the nozzle pipe provided on the frame, and the water supplied to the jet pipe by the machine head is sprayed out through the tube head and the jet pipe; the projection of the frame on a plane perpendicular to the axis of the tube head is in the shape of a rounded N-sided shape, and the frame is provided with a rotating section at the rounded corner of the rounded N-sided shape and a straight section at the straight side, and the nozzle pipe is installed at the rotating section and communicated with the tube head at the rotating section; the switching assembly is used to drive the frame to perform a displacement movement on the tube head in a direction perpendicular to the axis of the tube head, and the displacement movement includes rotational movement and linear movement.

[0005] Furthermore, an annular mounting ring is provided on the pipe head, and a concave guide groove is provided on the inner side of the frame along the outline of the frame, and the frame is engaged with the mounting ring through the guide groove.

[0006] Furthermore, a tooth surface is provided on the outer side of the frame along the contour of the frame, and the switching assembly includes a rotary actuator and an action gear connected to the rotary actuator. The rotary actuator is installed on the jet pipe through a mounting frame, and the action gear is meshed with the tooth surface to stabilize the relative position of the frame and the tube head, and to drive the frame to move on the tube head in a direction perpendicular to the axis of the tube head.

[0007] Furthermore, the value of N in the rounded N-gon is greater than or equal to 2, and the central angle of the rotating segment on the frame is equal to 360° / N; the contact portion between the switching component and the frame is arranged at the connection between the rotating segment and the straight segment, and the switching component drives the frame to rotate toward the other end of the rotating segment to perform rotational movement, and the switching component drives the frame to move on the straight segment toward the other rotating segment direction to perform linear movement.

[0008] Furthermore, an engagement frame is provided at the front end of the tube head, and side bite plates extending to the front end of the contact part are provided on both sides of the engagement frame, and a channel for the nozzle pipe to enter and exit is formed between the side bite plates; the nozzle pipe is fixed on the row frame and has a spacing with the inner side wall of the row frame, and the portion of the nozzle pipe located in the row frame is provided with side wings, and the nozzle pipe is engaged with the side bite plates on both sides through the side wings on both sides.

[0009] Furthermore, the minimum angle between the channel and the horizontal line is (360° / N) / 2; after the nozzle pipe follows the rotating section of the rack and rotates to the other end of the rotating section, the flank of the nozzle pipe enters the channel.

[0010] Furthermore, a water regulating valve group is provided on the spray pipe, and the water regulating valve group includes a straight-through valve member and a synchronization component. The straight-through valve member is installed on the spray pipe, and the pipe head is installed on the spray pipe through the straight-through valve member; the synchronization component cooperates with the frame to move to close or open the straight-through valve member when switching the spray head pipe.

[0011] Furthermore, the straight-through valve component includes a valve body and a valve core movably installed in the valve body, the valve body is installed on the jet pipe and installed coaxially with the jet pipe, the valve body is provided with a valve inner retaining wall, the valve inner retaining wall is provided with a fixed passage port and the valve core is provided with a dynamic passage port, the valve core rotates around the axis of the valve body so that the dynamic passage port is connected or staggered with the fixed passage port; the synchronization component includes a transit ring nested on the pipe head and a contact arm provided on the transit ring, the transit ring is connected to the valve core, the contact arm is driven by the moving frame to rotate and open, and a pulling member is provided between the transit ring or the valve core and the valve body to drive the opened valve core to reset and close.

[0012] Furthermore, the rotating section is provided with a rotational adjustment portion at the end section of the rotational movement, and the rotational adjustment portion is in contact with the contact arm to drive the contact arm and the valve core to rotate around the axis of the pipe head when the rack rotates. A buckle is provided on the valve body, and the contact arm is buckled and fixed with the buckle at the end of the rotation stroke; the straight section is provided with a straight adjustment portion at the end section of the linear movement, and the straight adjustment portion is in contact with the buckle at the end of the linear movement stroke to release the restriction of the buckle on the contact arm.

[0013] Furthermore, the contact arm is movably mounted on the transit ring, an elastic member is provided between the contact arm and the transit ring, an inner retraction stop column is provided on the valve body, an inclined section is provided on the contact arm and contacts with the inner retraction stop column during rotation, and the contact arm in contact with the inner retraction stop column moves into the transit ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a plurality of nozzle pipes of different forms in front of the jet pipe through a nozzle assembly, and utilizes a switching assembly to drive the nozzle pipes to switch, so that nozzle pipes of different forms are connected to the jet pipe. Different spraying forms can be used to extinguish the fire when dealing with different fire situations, making the fire extinguishing operation more targeted and obtaining a better fire extinguishing effect.

[0016] The present invention movably installs a rack equipped with a nozzle pipe on the jet pipe, and sets the rack to a rounded N-gon to determine the trajectory of its tooth surface. The rotating actuator drives the action gear to engage with the rack, and drives the rack to perform rotational movement and linear movement in sequence to automatically replace the nozzle pipe, and fixes the nozzle pipe to the jet pipe through an articulating frame at the front end of the jet pipe, so that the nozzle pipe that moves linearly can be automatically locked into the articulating frame and the nozzle pipe that moves rotationally can be automatically detached from the articulating frame, so that the nozzle pipe can be automatically replaced to adapt to different fire extinguishing scenes.

[0017] In addition, the present invention also provides a water regulating valve group on the jet pipe, and links the straight-through valve member with the movement of the rack through a synchronization component, so that when the nozzle pipe performs the operation of disengaging from the engaging rack on the rotating section, the rack can link and drive the straight-through valve member to close, and wait until the next nozzle pipe moves through the straight section to connect with the jet pipe, the straight-through valve member continues to open the water supply, thereby ensuring continuous water supply and closing the water flow when replacing the nozzle pipe, avoiding unnecessary impact of the water flow on the nozzle pipe that has not yet been installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the overall structure of an automatic tracking and positioning jet fire extinguishing device of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the jet pipe, the nozzle assembly and the switching assembly of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the nozzle assembly and the switching assembly in cooperation with the jet pipe of the present invention.

[0021] Figure 4 It is a schematic diagram of the moving state of the carriage of the present invention moving on the jet pipe.

[0022] Figure 5 It is a top view cutaway schematic diagram of the spray pipe, the spray head assembly, the switching assembly and the water regulating valve group of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the water regulating valve group and the rack according to the present invention.

[0024] Figure 7 It is a front structural schematic diagram of the water regulating valve group and the rack of the present invention and a three-dimensional enlarged diagram of the local structure.

[0025] Figure 8 It is a front structural schematic diagram of the water regulating valve group of the present invention cooperating with the rotated rack and a three-dimensional enlarged diagram of the local structure.

[0026] In the figure: 1, machine head; 2, connecting pipe; 3, spray pipe; 4, spray head assembly; 5, switching assembly; 6, water regulating valve group;

[0027] 31. Articulator; 3a. Head; 3b. Contact part; 3c. Mounting ring; 41. Nozzle pipe; 42. Traveling frame; 43. Hoop frame; 44. Rotary adjustment part; 45. Straight adjustment part; 51. Rotary actuator; 52. Action gear; 53. Mounting frame; 61. Straight-through valve; 62. Synchronous assembly;

[0028] 31a, side bite plate; 41a, side wing; 42a, straight section; 42b, rotary section; 42c, tooth surface; 42d, guide groove; 42e, connecting frame; 611, valve body; 612, valve inner retaining wall; 613, valve core; 614, pulling member; 61a, fixed passage; 61b, dynamic passage; 621, transit ring; 622, contact arm; 623, elastic member; 624, buckle; 625, retracted retaining column. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Examples, such as Figure 1-Figure 8As shown: The present invention provides an automatic tracking and positioning jet fire extinguishing device, which structure includes a machine head 1 and a jet pipe 3 installed on the machine head 1. The existing machine head 1 is provided with sensors for tracking and positioning the fire source, such as a temperature sensor, an infrared sensor, etc., and a camera for visual detection. At the same time, a pipeline is also provided in the machine head 1. The pipeline is connected to the water supply end through a connecting pipe 2 and is connected to the jet pipe 3 at the water outlet end. The jet pipe 3 is used to send fluid outward and is driven by the machine head 1 to move;

[0031] Among them, a nozzle assembly 4 is installed at the front end of the jet pipe 3, and the nozzle assembly 4 includes a plurality of nozzle pipes 41. A switching assembly 5 is also installed at the front end of the jet pipe 3. The switching assembly 5 is connected to the nozzle assembly 4 and is used to drive the switching of different nozzle pipes 41 to be connected to the jet pipe 3, so that different and more suitable nozzle forms can be used for different fire conditions.

[0032] As for the nozzle assembly 4, the nozzle assembly 4 also includes a rack 42, a connecting rack 42e is provided at the front end of the rack 42, a plurality of nozzle pipes 41 are installed on the rack 42 through the connecting rack 42e, a hoop rack 43 is provided between the nozzle pipes 41 to make the nozzle pipes 41 more secure, a pipe head 3a is provided at the front end of the jet pipe 3, the rack 42 is movably installed on the pipe head 3a, a contact portion 3b is provided at the front end of the pipe head 3a to abut against the nozzle pipe 41 provided on the rack 42, in this embodiment, the contact portion 3b adopts a rubber ring and is in close contact with the nozzle pipe 41, and the water supplied to the jet pipe 3 by the machine head 1 passes through the pipe head 3a and is ejected through the jet pipe 3;

[0033] Among them, the projection of the rack 42 on the plane perpendicular to the axis of the tube head 3a is a rounded N-sided shape. It should be noted that the value of N in the rounded N-sided shape is greater than or equal to 2, and the central angle of the rotating section 42b on the rack 42 is equal to 360° / N. For example, a rounded triangle is a triangle with three rounded corners, and a rounded quadrilateral is a quadrilateral with four rounded corners. Their central angles are 120° and 90° respectively, and a rounded bilateral is a special rounded quadrilateral, that is, the sum of the fillet radii of the two sides of the four corners is equal to the length of one side of the quadrilateral, thereby forming a rounded bilateral, and the rack 42 is provided with a rotating section 42b at the rounded corner of the rounded N-sided shape and a straight section 42a at the straight side, and the nozzle pipe 41 is installed at the rotating section 42b and is connected with the tube head 3a at the rotating section 42b;

[0034] At the same time, an annular mounting ring 3c is provided on the tube head 3a, and a recessed guide groove 42d is provided on the inner side of the frame 42 along the contour of the frame 42. The frame 42 is engaged with the mounting ring 3c through the guide groove 42d and thus moves on the tube head 3a.

[0035] In this embodiment, the value of N is 3, the shape of the rack 42 is a rounded equilateral triangle, the central angle of the rotating section 42b is 120°, the straight sections 42a on the three sides are of equal length, and it can be known that the rack 42 is in a stable state with its center located directly below the pipe head 3a, and three types of nozzle pipes 41 are respectively provided at the three rotating sections 42b, namely direct spray, flared nozzle and umbrella-shaped dispersion nozzle or atomizing nozzle, which respectively perform direct water spray, large-scale horizontal water spray and hood-like covering spray of water.

[0036] As for the switching component 5, the switching component 5 is used to drive the carriage 42 to perform a displacement movement on the tube head 3a in a direction perpendicular to the axis of the tube head 3a. The displacement movement includes rotational movement and linear movement. It should be noted that since the carriage 42 has a certain weight, the movement trajectory of the carriage 42 is not completely straight when performing a linear movement. It is only necessary to determine the positions of the starting and ending points and the path passing through the straight section 42a when moving; the outer side of the carriage 42 is provided with a tooth surface 42c along the contour of the carriage 42. The switching component 5 includes a reduction motor type rotary actuator 51 and an action gear 52 connected to the rotary actuator 51. The rotary actuator 51 is installed on the jet tube 3 through a mounting frame 53. The action gear 52 is meshed with the tooth surface 42c to stabilize the relative position of the carriage 42 and the tube head 3a, and to drive the carriage 42 to move on the tube head 3a in a direction perpendicular to the axis of the tube head 3a.

[0037] Moreover, the contact portion 3b of the switching component 5 and the frame 42, that is, the action gear 52 is arranged at the connection between the rotating section 42b and the straight section 42a. The switching component 5 drives the frame 42 to rotate toward the other end of the rotating section 42b, thereby performing a rotational movement. After the rotational movement, the action gear 52 moves from the starting section of the rotating section 42b to the ending section of the rotating section 42b. The ending section of the rotating section 42b is also the starting section of the straight section 42a. The switching component 5 drives the frame 42 to move on the straight section 42a toward the other rotating section 42b, thereby performing a linear movement, thereby driving the frame 42 to move on the tube head 3a, thereby switching different nozzle tubes 41 on the frame 42 to align with the contact portion 3b of the tube head 3a, so that the water flow of the jet tube 3 is sprayed out through the nozzle tube 41.

[0038] Therefore, for the cooperation between the jet pipe 3 and the nozzle pipe 41, a bite frame 31 is provided at the front end of the pipe head 3a, and side bite plates 31a extending to the front end of the contact portion 3b are provided on both sides of the bite frame 31. A passage for the nozzle pipe 41 to enter and exit is formed between the side bite plates 31a. The nozzle pipe 41 is fixed on the row frame 42 and has a spacing with the inner side wall of the row frame 42. The portion of the nozzle pipe 41 located in the row frame 42 is provided with side wings 41a. The nozzle pipe 41 is engaged with the side bite plates 31a on both sides through the side wings 41a on both sides, so as to abut against the contact portion 3b in front of the pipe head 3a.

[0039] Those skilled in the art will appreciate that the articulator 31 can also be connected to the jet pipe 3 by being driven by an electric cylinder, that is, the articulator 31 is nested on the pipe head 3a, and the jet pipe 3 is provided with an electric cylinder to drive the articulator 31 to move on the axis of the pipe head 3a, thereby clamping the side wing 41a thereto;

[0040] It should be noted that the minimum angle between the channel and the horizontal line is (360° / N) / 2. In the present embodiment, the minimum angle between the channel and the horizontal line is 60°. After the nozzle tube 41 rotates to the other end of the rotating section 42b following the rotating section 42b of the frame 42, the side wing 41a of the nozzle tube 41 enters the channel, and then the straight section 42a can be moved in a straight line without being restricted by the side wing 41a. When the next nozzle tube 41 reaches the contact portion 3b, it can be directly inserted into the articulator 31 using the side wing 41a.

[0041] In summary, in a specific implementation, the machine head 1 is positioned to the direction of the fire source, and then the machine head 1 drives the jet pipe 3 to point above the fire source. At this time, the direct-spray nozzle pipe 41 on the nozzle assembly 4 is connected to the jet pipe 3, and the external water supply enters the machine head 1 through the connecting pipe 2 and then sprays out through the nozzle pipe 41 to perform a fire extinguishing operation on the target fire source area. When other combustibles are splashed out from the fire to the surrounding area, it may not be possible to extinguish the fire in multiple places in time by driving the nozzle pipe 41 to move by the machine head 1. At this time, the motor-type rotary actuator 51 drives the action gear 52 to rotate, and the action gear 52 is meshed with the tooth surface 42c of the rack 42, such as Figure 4 As shown, at this time, the action gear 52 is stuck at one end of the rotating section 42b of the frame 42, which serves as the starting section. The action gear 52 rotates to drive the frame 42 to rotate toward the other end of the rotating section 42b, and the frame 42 rotates 120° around the axis of the pipe head 3a. The side wing 41a of the nozzle pipe 41 enters the channel and is disengaged from the articulation frame 31.

[0042] The action gear 52 moves from the starting section of the rotary section 42b to the ending section of the rotary section 42b, and the ending section of the rotary section 42b is also the starting section of the straight section 42a. The action gear 52 rotates to drive the frame 42 to move on the straight section 42a toward the other rotary section 42b, thereby moving in a straight line, so that the original rotary section 42b is separated from the pipe head 3a, and after moving through the straight section 42a, the next rotary section 42b and the nozzle pipe 41 on the rotary section 42b are allowed to come to the pipe head 3a. In the process of the action gear 52 moving to the starting section of the next rotary section 42b, the side wings 41a on both sides of the nozzle pipe 41 on the next rotary section 42b are engaged with the inner sides of the bite frame 31, and the freedom of the nozzle pipe 41 in the axial direction is limited by the side bite plate 31a, so that the nozzle pipe 41 is automatically replaced and automatically connected and assembled, so that the fire extinguishing device can use a more suitable nozzle to spray water according to the actual situation.

[0043] On the basis of the above-mentioned implementation mode, the present embodiment is not only that, a water regulating valve group 6 is provided on the spray pipe 3, and the water regulating valve group 6 includes a straight-through valve member 61 and a synchronous component 62. The straight-through valve member 61 is installed on the spray pipe 3, and the pipe head 3a is installed on the spray pipe 3 through the straight-through valve member 61. Since the on-site situation is relatively urgent, the re-opening and closing of the external water flow will cause a new impact on the spray pipe 3, which is easy to affect the stability of the overall structure. When switching the nozzle pipe 41, if the external water flow is continuous, it is easy to cause unnecessary impact on the nozzle pipe 41. Therefore, the synchronous component 62 cooperates with the rack 42 to move to close or open the straight-through valve member 61 when switching the nozzle pipe 41, thereby avoiding unnecessary impact of the water flow on the nozzle pipe 41 that has not been installed in place;

[0044] To this end, the through valve member 61 includes a valve body 611 and a valve core 613 movably mounted in the valve body 611. The valve body 611 is mounted on the jet pipe 3 and is coaxially mounted with the jet pipe 3. An inner valve retaining wall 612 is arranged in the valve body 611. The inner valve retaining wall 612 is provided with a fixed through port 61a, and the valve core 613 is provided with a moving through port 61b. The valve core 613 rotates around the axis of the valve body 611 so that the moving through port 61b is connected to or staggered with the fixed through port 61a.

[0045] The synchronization component 62 includes a transfer ring 621 nested on the pipe head 3a and a contact arm 622 provided on the transfer ring 621. The transfer ring 621 is connected to the valve core 613. The contact arm 622 is driven by the moving rack 42 to rotate and open. A pulling member 614 is provided between the transfer ring 621 or the valve core 613 and the valve body 611 to drive the opened valve core 613 to reset and close. The rotary section 42b is provided with a rotary adjustment portion 44 at the end of the rotary movement. The portion 44 contacts the contact arm 622 to drive the contact arm 622 and the valve core 613 to rotate around the axis of the pipe head 3a when the travel frame 42 rotates. A buckle 624 is provided on the valve body 611, and the contact arm 622 is buckled and fixed with the buckle 624 at the end of the rotation stroke; the straight section 42a is provided with a straight adjustment portion 45 at the end of the straight movement, and the straight adjustment portion 45 contacts the buckle 624 at the end of the straight movement stroke, thereby releasing the restriction of the buckle 624 on the contact arm 622;

[0046] In addition, the contact arm 622 is movably mounted on the transit ring 621, an elastic member 623 is provided between the contact arm 622 and the transit ring 621, an inner retraction stop column 625 is provided on the valve body 611, an inclined section is provided on the contact arm 622 and contacts with the inner retraction stop column 625 during rotation, and the contact arm 622 in contact with the inner retraction stop column 625 moves into the transit ring 621.

[0047] Therefore, in specific implementation, the action gear 52 drives the rotating section 42b of the travel frame 42 to rotate, and the rotary adjustment part 44 on the rotary section 42b abuts against the contact arm 622 to drive the contact arm 622 to rotate, so that the valve core 613 rotates to stagger the movable port 61b and the fixed port 61a, and the valve is closed. When the contact arm 622 moves quickly to the end of the stroke, the inclined section of the contact arm 622 abuts against the retracted stop column 625. Under the further drive of the rotary adjustment part 44, the contact arm 622 presses against the retracted stop column 625 to retract into the intermediate ring 621 until it breaks contact with the rotary adjustment part 44, allowing the travel frame 42 to continue to move and break contact. The buckle 624 buckles the contact arm 622 and fixes the position of the valve core 613, allowing the valve to remain closed. Then the carriage 42 continues to move, and the straight adjustment portion 45 contacts the buckle 624 at the end of the linear movement, breaking the buckle 624 outward, thereby releasing the restriction of the buckle 624 on the contact arm 622, and driving the valve core 613 to rotate and reset around the axis through the pulling member 614, so that the moving port 61b is aligned and connected with the fixed port 61a, and the valve is reopened. In this way, while ensuring continuous water supply, the water flow is closed when the nozzle pipe 41 is replaced, avoiding unnecessary impact of the water flow on the nozzle pipe 41 that has not yet been installed.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An automatic tracking and positioning jet fire extinguishing device, which comprises a machine head and a jet pipe installed on the machine head, wherein the jet pipe is used to deliver fluid outward, and is characterized in that: A nozzle assembly is installed at the front end of the jet pipe, and the nozzle assembly includes a plurality of nozzle pipes. A switching assembly is also installed at the front end of the jet pipe, and the switching assembly is connected to the nozzle assembly to drive the switching of different nozzle pipes to be connected to the jet pipe; The nozzle assembly also includes a rack, a plurality of nozzle pipes are mounted on the rack, a pipe head is provided at the front end of the jet pipe, the rack is movably mounted on the pipe head, a contact portion is provided at the front end of the pipe head for abutting against the nozzle pipe provided on the rack, and the water supplied to the jet pipe by the machine head is sprayed out through the pipe head and the jet pipe; The projection of the rack on a plane perpendicular to the axis of the tube head is in the shape of a rounded N-sided shape, the rack is provided with a swivel section at the rounded corner of the rounded N-sided shape and a straight section at the straight side, the nozzle pipe is installed at the swivel section and is connected to the tube head at the swivel section; The switching assembly is used to drive the carriage to perform transposition movement on the tube head in a direction perpendicular to the axis of the tube head, and the transposition movement includes rotational movement and linear movement; The value of N in the rounded N-gon is greater than or equal to 2, and the central angle of the rotating segment on the rack is equal to 360° / N; The contact part between the switching component and the carriage is arranged at the connection between the rotating section and the straight section. The switching component drives the carriage to rotate toward the other end of the rotating section to perform rotational movement. The switching component drives the carriage to move toward the other rotating section on the straight section to perform linear movement. The jet pipe is provided with a water regulating valve group, the water regulating valve group includes a straight-through valve member and a synchronization component, the straight-through valve member is installed on the jet pipe, and the pipe head is installed on the jet pipe through the straight-through valve member; The synchronization component cooperates with the rack to move to close or open the straight-through valve when switching the nozzle pipe; The straight-through valve member comprises a valve body and a valve core movably mounted in the valve body, the valve body being mounted on the jet pipe and being coaxially mounted with the jet pipe, the valve body being provided with a valve inner retaining wall, the valve inner retaining wall being provided with a fixed passage opening and the valve core being provided with a moving passage opening, the valve core being rotated around the axis of the valve body so that the moving passage opening is connected to or staggered with the fixed passage opening; The synchronization component includes a transfer ring nested on the pipe head and a contact arm provided on the transfer ring, the transfer ring is connected to the valve core, the contact arm is driven by the moving frame to rotate and open, and a pulling member is provided between the transfer ring or the valve core and the valve body to drive the opened valve core to reset and close.

2. The automatic tracking and positioning jet fire extinguishing device according to claim 1 is characterized in that: The pipe head is provided with an annular mounting ring, the inner side of the frame is provided with a recessed guide groove along the outline of the frame, and the frame is engaged with the mounting ring through the guide groove.

3. The automatic tracking and positioning jet fire extinguishing device according to claim 1 is characterized in that: The outer side of the frame is provided with a tooth surface along the contour of the frame. The switching assembly includes a rotary actuator and an action gear connected to the rotary actuator. The rotary actuator is installed on the jet pipe through a mounting frame. The action gear is meshed with the tooth surface to stabilize the relative position of the frame and the tube head, and to drive the frame to move on the tube head in a direction perpendicular to the axis of the tube head.

4. The automatic tracking and positioning jet fire extinguishing device according to claim 1 is characterized in that: The front end of the tube head is provided with an articulation frame, and the two sides of the articulation frame are provided with side bite plates extending to the front end of the contact part, and a passage for the nozzle tube to enter and exit is formed between the side bite plates; The nozzle pipe is fixed on the rack and has a distance from the inner wall of the rack. The portion of the nozzle pipe located inside the rack is provided with side wings. The nozzle pipe is engaged with the side bite plates on both sides through the side wings on both sides.

5. The automatic tracking and positioning jet fire extinguishing device according to claim 4 is characterized in that: The minimum angle between the channel and the horizontal line is (360° / N) / 2; after the nozzle pipe follows the rotating section of the rack and rotates to the other end of the rotating section, the flank of the nozzle pipe enters the channel.

6. The automatic tracking and positioning jet fire extinguishing device according to claim 1 is characterized in that: The rotating section is provided with a rotation adjustment part at the end section of the rotating movement, and the rotation adjustment part is in contact with the contact arm to drive the contact arm and the valve core to rotate around the axis of the pipe head when the frame rotates. The valve body is provided with a buckle, and the contact arm is buckled and fixed with the buckle at the end of the rotation stroke; The straight section is provided with a straight adjustment portion at the end section of the straight movement, and the straight adjustment portion contacts the buckle at the end of the stroke of the straight movement to release the restriction of the buckle on the contact arm.

7. The automatic tracking and positioning jet fire extinguishing device according to claim 6 is characterized in that: The contact arm is movably mounted on the transit ring, an elastic member is provided between the contact arm and the transit ring, an inner retraction stop column is provided on the valve body, an inclined section is provided on the contact arm and contacts with the inner retraction stop column during rotation, and the contact arm in contact with the inner retraction stop column moves into the transit ring.

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