Fire hydrant with positioning function

Abstract

The embodiment of the utility model relates to the technical field of fire hydrants, in particular to a fire hydrant with a positioning function, which comprises a fire hydrant main cover, a fire hydrant main cover and a fire hydrant main cover, the fire hydrant sub-cover is detachably connected with the connecting ring body; the extrusion part is connected with the valve rod; the buffer pressing piece is movably connected with the top plate of the fire hydrant main cover; the pressure sensor is connected with the top plate of the fire hydrant main cover, and when the valve rod drives the extrusion part to move upwards to extrude the buffer pressing part, the buffer pressing part presses the pressure sensor; when the valve rod drives the extrusion part to move downwards to be separated from the buffer pressing part, the buffer pressing part is separated from the pressure sensor; the controller is arranged in the inner cavity of the fire hydrant main cover, and the controller is electrically connected with the pressure sensor; and the GPS positioning module is arranged in the inner cavity of the fire hydrant main cover, and the GPS positioning module is electrically connected with the controller. According to the fire hydrant disclosed by the embodiment of the invention, the recording operation of the use condition of the fire hydrant is very simple and convenient and is not easy to make mistakes.

Description

Technical Field

[0001] The embodiments of this specification relate to the technical field of fire hydrants, and specifically to a fire hydrant with a positioning function. Background Art

[0002] Fire hydrants are fixed firefighting facilities, which are mainly used to control combustibles, isolate combustion-supporting materials, and eliminate fire sources. Fire hydrants are mainly used for fire trucks to draw water from the municipal water supply network or outdoor fire water supply network to extinguish fires, and can also be directly connected to water hoses and water guns to discharge water for firefighting.

[0003] In the prior art, the use of fire hydrants is mostly recorded manually by staff. However, manual recording of the use of fire hydrants is cumbersome and prone to errors and omissions. Especially when there are many fire hydrants densely distributed in an area, it is difficult to determine the actual location of the fire hydrants manually, which easily leads to recording errors. Summary of the invention

[0004] In view of the shortcomings of the prior art, the embodiments of this specification propose a fire hydrant with a positioning function, including:

[0005] The main cover of the fire hydrant has a connecting ring on the top;

[0006] The fire hydrant cover is detachably connected to the connecting ring body;

[0007] An extrusion, connected to the valve stem;

[0008] A buffer pressing piece, movably connected to the top plate of the main cover of the fire hydrant;

[0009] The pressure sensor is connected to the top plate of the main cover of the fire hydrant, and when the valve stem drives the extrusion member to move upward to extrude the buffer pressing member, the buffer pressing member presses the pressure sensor; when the valve stem drives the extrusion member to move downward to separate from the buffer pressing member, the buffer pressing member is separated from the pressure sensor;

[0010] A controller is disposed in the inner cavity of the fire hydrant main cover, and the controller is electrically connected to the pressure sensor;

[0011] A GPS positioning module is disposed in the inner cavity of the fire hydrant main cover, and the GPS positioning module is electrically connected to the controller;

[0012] The communication module is arranged in the inner cavity of the main cover of the fire hydrant, and the controller is wirelessly connected to the monitoring platform through the communication module.

[0013] Preferably, the buffer pressing member comprises:

[0014] A first pressing ring plate is sleeved with the valve stem;

[0015] The second pressing ring plate is sleeved with the valve stem;

[0016] An elastic body, wherein a first elastic end of the elastic body is connected to the first pressing ring plate, and a second elastic end of the elastic body is connected to the second pressing ring plate;

[0017] A connecting rod, a first length direction end of which is connected to the first pressing ring plate; a through hole is provided on the top plate of the main cover of the fire hydrant to allow the connecting rod to pass through;

[0018] The hanging piece is connected to the second length direction end of the connecting rod.

[0019] Preferably, the extrusion comprises:

[0020] A connecting sleeve is sleeved with the valve stem, and the connecting sleeve is connected to the valve stem through a connecting piece;

[0021] The extrusion ring plate is sleeved with the valve stem, and the extrusion ring plate is connected to the axial top end of the connecting sleeve.

[0022] Preferably, a ball groove is provided on the side of the extrusion ring plate facing the second pressing ring plate, and a ball is provided in the ball groove.

[0023] Preferably, the extrusion piece comprises two symmetrically arranged extrusion halves; the extrusion halves comprise:

[0024] Connect half set;

[0025] An extruded semi-annular plate is connected to one axial end of the connecting half sleeve, and the central axis of the extruded semi-annular plate is the same as the central axis of the connecting half sleeve;

[0026] The assembly orifice plate is arranged on the circumferential side of the connecting half sleeve.

[0027] Preferably, the buffer pressing member comprises two symmetrically arranged buffer pressing halves; the buffer pressing halves comprise:

[0028] first semi-annular plate;

[0029] A first splicing orifice plate, arranged on a circumferential side of the first semi-annular plate;

[0030] a second semi-annular plate;

[0031] A second splicing orifice plate, arranged on the circumferential side of the second semi-annular plate;

[0032] An elastic body, a first elastic end of which is connected to the first semi-annular plate, and a second elastic end of the elastic body is connected to the second semi-annular plate;

[0033] A connecting rod, a first lengthwise end of which is connected to the first semi-annular plate;

[0034] The hanging piece is connected to the second length direction end of the connecting rod.

[0035] Preferably, the connecting rod comprises:

[0036] A connecting rod segment 1, whose axial first end is connected to the first semi-annular plate, and the diameter of the connecting rod segment 1 is the same as the diameter of the through hole;

[0037] The connecting rod segment 2 has one axial end connected to the axial second end of the connecting rod segment 1, the diameter of the connecting rod segment 2 is smaller than the diameter of the connecting rod segment 1, and the connecting rod segment 2 is provided with a connecting thread for assembly with the hanging piece.

[0038] Preferably, the hanging member is a support plate with connecting threaded holes.

[0039] Preferably, the top end of the valve stem is connected to a valve stem rotation auxiliary member, and the valve stem rotation auxiliary member is provided with a rotation limit rod;

[0040] The inner peripheral wall of the connecting ring body is provided with a rotation limiting groove.

[0041] Preferably, the rotation limiting groove is provided with a rotation limiting plate detachably connected to the rotation limiting groove.

[0042] Beneficial Effects

[0043] For the fire hydrant in the embodiment of the present specification, when the fire hydrant is in use, the controller can obtain pressure value data through the extrusion piece, the buffer pressing piece, and the pressure sensor, and can obtain the actual location information of the fire hydrant through the GPS positioning module. The controller only needs to send the pressure value data and the actual location information of the fire hydrant to the monitoring platform so that the monitoring platform can automatically record the use of the fire hydrant, ultimately making the operation of recording the use of the fire hydrant very simple and less prone to errors.

[0044] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A cross-sectional view of a fire hydrant with a positioning function in an embodiment of this specification;

[0046] Figure 2 This is a schematic diagram of the structure of the buffer pressing member and other components in the embodiment of this specification;

[0047] Figure 3 It is a structural schematic diagram of the main cover of the fire hydrant in the embodiment of this specification;

[0048] Figure 4 This is a schematic diagram of the structure of the extrusion part in the embodiment of this specification;

[0049] Figure 5 This is a structural schematic diagram of another embodiment of the buffer pressing member in the embodiments of this specification;

[0050] Figure 6It is a structural schematic diagram of another embodiment of the extrusion piece in the embodiments of this specification;

[0051] Figure 7 This is a schematic diagram of the structure of the valve stem rotation auxiliary member in the embodiment of this specification;

[0052] Figure 8 It is a structural schematic diagram of another embodiment of the fire hydrant main cover in the embodiments of this specification. DETAILED DESCRIPTION

[0053] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0054] Embodiment 1:

[0055] like Figure 1 As shown, this embodiment provides a fire hydrant with a positioning function, including: a fire hydrant main cover 110, a fire hydrant sub-cover 120, an extrusion piece 200, a buffer pressing piece 400, a pressure sensor 500, a controller 600, a GPS positioning module 700 and a communication module 800.

[0056] A connecting ring 111 is provided on the top of the fire hydrant main cover 110 .

[0057] The fire hydrant sub-cap 120 is detachably connected to the connecting ring body 111. The outer peripheral wall of the connecting ring body 111 is provided with a connecting thread, and the inner peripheral wall of the fire hydrant sub-cap 120 is provided with a docking thread. The fire hydrant sub-cap 120 is connected to the fire hydrant main cap 110 through threads.

[0058] The extrusion piece 200 is connected to the valve stem 300. The extrusion piece 200 moves synchronously with the valve stem 300.

[0059] The buffer pressing member 400 is movably connected to the top plate of the fire hydrant main cover 110. The buffer pressing member 400 and the fire hydrant main cover 110 are limited in the horizontal direction and can only move up and down relative to the fire hydrant main cover 110.

[0060] The pressure sensor 500 is connected to the top plate of the fire hydrant main cover 110, and when the valve stem 300 drives the extrusion member 200 to move upward to press the buffer pressing member 400, the buffer pressing member 400 presses the pressure sensor 500; when the valve stem 300 drives the extrusion member 200 to move downward to separate from the buffer pressing member 400, the buffer pressing member 400 separates from the pressure sensor 500. If the pressure sensor 500 is pressed directly by the extrusion member 200, it will easily cause the pressure sensor 500 to be damaged. Therefore, the pressure sensor 500 is indirectly pressed by the buffer pressing member 400 in this embodiment.

[0061] The controller 600 is disposed in the inner cavity of the fire hydrant main cover 110 , and the controller 600 is electrically connected to the pressure sensor 500 .

[0062] The GPS positioning module 700 is disposed in the inner cavity of the fire hydrant main cover 110, and the GPS positioning module 700 is electrically connected to the controller 600. The GPS positioning module 700 directly adopts the existing technology and is mainly used to obtain the actual position of the fire hydrant.

[0063] The communication module 800 is disposed in the inner cavity of the fire hydrant main cover 110, and the controller 600 is wirelessly connected to the monitoring platform through the communication module 800. The communication module 800 may be an NB-IoT communication module, which directly adopts the existing technology and is mainly used to enable the controller 600 to communicate wirelessly with the monitoring platform.

[0064] In the prior art, there are roughly two ways to open and close fire hydrant valves:

[0065] Method 1: The valve stem can rotate but cannot move up and down, while the valve core connected to the bottom of the valve stem can move up and down relative to the valve stem when the valve stem rotates. Specifically, when the valve stem rotates clockwise, the valve core moves downward relative to the valve stem until it contacts the valve seat, and the fire hydrant valve is closed; when the valve stem rotates counterclockwise, the valve core moves upward relative to the valve stem until it separates from the valve seat, and the fire hydrant valve is opened.

[0066] Method 2: The valve stem can move up and down while rotating, and the valve core moves with the valve stem. Specifically, when the valve stem rotates clockwise, the valve stem will move downward, and then drive the valve core to move downward until the valve core contacts the valve seat, and the fire hydrant valve is closed; when the valve stem rotates counterclockwise, the valve stem will move upward, and then drive the valve core to move upward, and then the valve core is separated from the valve seat, and the fire hydrant valve is opened.

[0067] This embodiment is applicable to fire hydrants with valve switch adopting mode 2, and a threaded seat is provided inside the fire hydrant body to cooperate with the valve stem 300. In short, when the valve stem 300 of the fire hydrant of this embodiment rotates clockwise relative to the threaded seat, it will move downward, the fire hydrant valve is closed, and the fire hydrant stops being used; when the valve stem 300 rotates counterclockwise relative to the threaded seat, it will move upward, the fire hydrant valve is opened, and the fire hydrant starts being used.

[0068] The specific working principle of the fire hydrant in this embodiment is:

[0069] like Figure 1As shown, when the staff uses the fire hydrant, they first remove the fire hydrant cover 120, and then use a tool to rotate the valve stem 300 counterclockwise, and the valve stem 300 moves upward while rotating. When the valve stem 300 moves upward, it will drive the extrusion piece 200 to rotate and move upward synchronously. Since the buffer pressing piece 400 cannot rotate circumferentially, the buffer pressing piece 400 can only move upward under the force of the extrusion piece 200. When the buffer pressing piece 400 moves upward, it will contact the pressure sensor 500 and be continuously compressed. The greater the degree of compression of the buffer pressing piece 400, the greater the pressing force on the pressure sensor 500. When the valve stem 300 stops moving, the pressure value detected by the pressure sensor 500 is roughly fixed. At this time, the valve of the fire hydrant is opened and the fire hydrant can be used normally.

[0070] When the fire hydrant is used, the valve stem 300 is rotated clockwise by a tool, and the valve stem 300 moves downward while rotating. When the valve stem 300 moves downward, it will drive the extrusion member 200 to rotate and move downward synchronously. During the process of the extrusion member 200 rotating and moving downward, the buffer pressing member 400 will first restore compression and then move downward. During the process of the buffer pressing member 400 restoring compression, the pressing force on the pressure sensor 500 will become smaller and smaller. When the buffer pressing member 400 moves downward, the pressing force detected by the pressure sensor 500 will become 0. When the valve stem 300 stops moving, the valve of the fire hydrant is closed and the fire hydrant stops being used. Thereafter, the pressure value detected by the pressure sensor 500 remains at 0V until the fire hydrant is reused.

[0071] The controller 600 can obtain the pressure value detected by the pressure sensor 500 at a certain frequency (for example, 2 seconds). For example, the pressure value obtained in a certain time period is: 0, 0, 1 (assuming it is data point A), 2, 3, 4, 5, 5, 5, ..., 5, 5, 4, 3, 2, 1 (assuming it is data point B), 0, 0, 0. In this embodiment, the latter data point when the pressure value changes from 0 to non-0 is taken as data point A, and the former data point when the pressure value changes from non-0 to 0 is taken as data point B. The controller 600 will automatically obtain the time point a corresponding to the data point A and the time point b corresponding to the data point B. And when the controller 600 obtains the data point A, it will automatically control the GPS positioning module 700 to start to obtain the actual location information of the fire hydrant.

[0072] After acquiring data point B, the controller 600 can package and send the following data: time point a, time point b, actual location information of the fire hydrant, water consumption in this time period (a water consumption detection component can be set inside the fire hydrant), fire hydrant number information, pressure value in this time period, etc. to the monitoring platform. After receiving the packaged data, the monitoring platform can automatically record the usage of the corresponding fire hydrant.

[0073] In short, when the fire hydrant is not in use, the pressure value detected by the pressure sensor 500 is 0; when the fire hydrant is in use, the pressure value detected by the pressure sensor 500 is not 0, and the controller 600 can automatically obtain the pressure value data of the pressure value not being 0, and can also automatically obtain the time point a corresponding to the first pressure value not being 0 and the time point b corresponding to the last pressure value not being 0, and the controller 600 can also obtain the actual location information of the fire hydrant with the assistance of the GPS positioning module 700. The controller 600 only needs to package the pressure value data of the pressure value not being 0, the time point a, the time point b, and the actual location information of the fire hydrant and send them to the monitoring platform, so that the monitoring platform can automatically record the use of the fire hydrant, making the recording operation of the use of the fire hydrant more convenient and less prone to errors.

[0074] Further, such as Figure 2 As shown, the buffer pressing member 400 in this embodiment includes: a first pressing ring plate 410 , a second pressing ring plate 420 , an elastic body 430 , a connecting rod 440 and a hanging member 450 .

[0075] The first pressing ring plate 410 is sleeved with the valve stem 300. The first pressing ring plate 410 is in a circular ring shape.

[0076] The second pressing ring plate 420 is sleeved with the valve stem 300. The second pressing ring plate 420 is also annular, and the second pressing ring plate 420 and the first pressing ring plate 410 are vertically parallel and symmetrically arranged. The inner ring diameters of the second pressing ring plate 420 and the first pressing ring plate 410 are larger than the diameter of the valve stem 300, so that the valve stem 300 will not have any impact on the second pressing ring plate 420 and the first pressing ring plate 410 when moving up and down.

[0077] The first elastic end of the elastic body 430 is connected to the first pressing ring plate 410, and the second elastic end of the elastic body 430 is connected to the second pressing ring plate 420. The elastic body 430 is a spring.

[0078] The first length direction end of the connecting rod 440 is connected to the first pressing ring plate 410. Figure 3 As shown, the top plate of the fire hydrant main cover 110 is provided with a through hole 112 that allows the connecting rod 440 to pass through. The diameter of the through hole 112 is slightly larger than the diameter of the connecting rod 440, so that the through hole 112 can limit the connecting rod 440 in the horizontal direction (i.e., it can limit the entire buffer pressing member 400 in the horizontal direction) without affecting the up and down movement of the connecting rod 440 (i.e., it will not affect the up and down movement of the entire buffer pressing member 400). The number of connecting rods 440 can be 2, 3, 4, or 6.

[0079] The hanging member 450 is connected to the second length direction end of the connecting rod 440. The hanging member 450 can be a horizontally arranged circular plate, and the diameter of the circular plate is greater than the diameter of the through hole 112.

[0080] When the buffer pressing member 400 is not acted upon by an external force, the entire buffer pressing member 400 is hung on the top plate of the fire hydrant main cover 110 through the hanging member 450 . At this time, the first pressing ring plate 410 is not in contact with the pressure sensor 500 .

[0081] When the buffer pressing member 400 is subjected to the upward force of the extrusion member 200, the buffer pressing member 400 first moves upward as a whole until the first pressing ring plate 410 contacts the pressure sensor 500, and then the first pressing ring plate 410, the connecting rod 440, and the hanging member 450 remain in position, and the second pressing ring plate 420 continues to move upward to compress the elastomer 430, and finally the first pressing ring plate 410 generates pressure on the pressure sensor 500.

[0082] When the force acting on the buffer pressing member 400 gradually decreases, the first pressing ring plate 410, the connecting rod 440, and the hanging member 450 remain in position, and the second pressing ring plate 420 gradually moves downward to restore the elastic force of the elastomer 430, and then the buffer pressing member 400 moves downward as a whole until it is re-hanged on the top plate of the fire hydrant main cover 110.

[0083] like Figure 2 As shown, the extrusion component 200 of this embodiment includes: a connecting sleeve 210 and an extrusion ring plate 220 .

[0084] The connecting sleeve 210 is sleeved with the valve stem 300, and the connecting sleeve 210 is connected and fixed to the valve stem 300 through a connecting piece. The sleeve hole diameter of the connecting sleeve 210 is the same as the diameter of the valve stem 300. The connecting sleeve 210 is provided with a connecting hole, and the valve stem 300 is provided with a docking hole, and the connecting piece can be a bolt and a nut.

[0085] The extrusion ring plate 220 is sleeved with the valve stem 300, and the extrusion ring plate 220 is connected to the axial top end of the connection sleeve 210. When the extrusion member 200 is connected and fixed, the extrusion ring plate 220 is aligned with the second pressing ring plate 420. The outer ring diameter of the extrusion ring plate 220 is equal to the outer ring diameter of the second pressing ring plate 420, thereby being able to effectively apply an upward force to the second pressing ring plate 420.

[0086] The extrusion member 200 of this embodiment can provide a force that moves upward while rotating, and the force is evenly distributed in the circumferential direction and is stable and reliable. The buffer pressing member 400 of this embodiment can convert the force that moves upward while rotating into a force that only moves upward, and the force acts slowly on the pressure sensor 500, so that the pressure sensor 500 can accurately detect the pressure value of the external force, and can prevent the pressure sensor 500 from being damaged by the external force.

[0087] Further, such as Figure 4As shown, a ball groove is provided on the side of the extrusion ring plate 220 facing the second pressing ring plate 420, and a ball 222 is provided in the ball groove. The arrangement of the ball 222 can reduce the contact friction between the extrusion ring plate 220 and the second pressing ring plate 420, thereby making the extrusion member 200 rotate more smoothly relative to the buffer pressing member 400.

[0088] Further, such as Figure 6 As shown, the extrusion member 200 includes two symmetrically arranged extrusion halves. The extrusion halves include: a connecting half sleeve 211, an extruded semi-annular plate 221 and an assembly orifice plate 212. The extruded semi-annular plate 221 is connected to one axial end of the connecting half sleeve 211, and the central axis of the extruded semi-annular plate 221 is the same as the central axis of the connecting half sleeve 211. The assembly orifice plate 212 is arranged on the circumferential side of the connecting half sleeve 211.

[0089] The two extruded halves are assembled to obtain an extruded part 200. When assembling, it is only necessary to place the two extruded halves symmetrically on the valve stem 300, and then connect and fix the two pairs of assembled orifice plates 212 by splicing connectors (such as bolts and nuts). The extruded part 200 of this structure makes it easier to disassemble and assemble the extruded part 200 and the valve stem 300.

[0090] Further, such as Figure 5 As shown, the buffer pressing member 400 includes two symmetrically arranged buffer pressing halves, which include: a first semi-annular plate 411 , a first splicing hole plate 412 , a second semi-annular plate 421 , a second splicing hole plate 422 , an elastic body 430 , a connecting rod 440 and a hanging member 450 .

[0091] The first splicing hole plate 412 is arranged on the circumferential side of the first semi-annular plate 411. The second splicing hole plate 422 is arranged on the circumferential side of the second semi-annular plate 421. The first elastic end of the elastic body 430 is connected to the first semi-annular plate 411, and the second elastic end of the elastic body 430 is connected to the second semi-annular plate 421. The first length direction end of the connecting rod 440 is connected to the first semi-annular plate 411. The hanging member 450 is connected to the second length direction end of the connecting rod 440.

[0092] The connecting rod 440 includes: a connecting rod segment 1 441 and a connecting rod segment 2 442. The first axial end of the connecting rod segment 1 441 is connected to the first semi-annular plate 411, and the diameter of the connecting rod segment 1 441 is the same as the diameter of the through hole 112. The second axial end of the connecting rod segment 442 is connected to the second axial end of the connecting rod segment 1 441, the diameter of the connecting rod segment 2 442 is smaller than the diameter of the connecting rod segment 1 441, and the connecting rod segment 2 442 is provided with a connecting thread for assembly and connection with the hanging member 450.

[0093] The hanging member 450 is a supporting plate with a connecting threaded hole.

[0094] Two buffer pressing halves are assembled to obtain a buffer pressing part 400. During assembly, it is only necessary to first pass the connecting rods 440 of the two buffer pressing halves through the through hole 112 from bottom to top, and then install the hanging part 450 on the connecting rod section 2 442 through the butt threaded hole and make the bottom surface of the hanging part 450 contact the connecting rod section 1 441. After all the hanging parts 450 are installed, the two buffer pressing halves are hung on the top plate of the fire hydrant main cover 110 by their own gravity, and finally the two pairs of first splicing hole plates 412 and the two pairs of second splicing hole plates 422 are connected and fixed by splicing connecting parts (such as bolts and nuts). The buffer pressing part 400 of this structure makes it easier to disassemble and assemble the buffer pressing part 400, the valve stem 300 and the top plate of the fire hydrant main cover 110.

[0095] Further, such as Figure 7 As shown, the top of the valve stem 300 is connected to a valve stem rotation auxiliary member 900, which may be a slot body with a hexagonal slot, and the wrench is usually provided with a hexagonal plug-in body assembled and connected with the hexagonal slot. When the valve stem 300 needs to be rotated, it is only necessary to insert the hexagonal plug-in body on the wrench into the hexagonal slot and then rotate the wrench.

[0096] The valve stem rotation auxiliary member 900 in this embodiment is provided with a rotation limiting rod 910. Figure 8 As shown, a rotation limiting groove 113 is formed on the inner circumferential wall of the connecting ring body 111 .

[0097] The connecting ring body 111 may be provided with two rotation limit grooves 113, and the rotation angle between the two rotation limit grooves 113 may be 120 degrees. When the fire hydrant is not in use, the rotation limit rod 910 is aligned with the first rotation limit groove 113; when the fire hydrant is in normal use, the rotation limit rod 910 is aligned with the second rotation limit groove 113.

[0098] That is to say, when the fire hydrant needs to be used, it is only necessary to rotate the valve stem 300 120 degrees counterclockwise, and the rotation limit rod 910 is aligned with the second rotation limit groove 113; when the fire hydrant is used, it is only necessary to rotate the valve stem 300 120 degrees clockwise, and the rotation limit rod 910 is aligned with the first rotation limit groove 113.

[0099] The setting of the rotation limit rod 910 and the rotation limit groove 113 enables the staff to know to what extent the valve stem 300 should be rotated, thereby avoiding excessive counterclockwise rotation of the valve stem 300 to damage the pressure sensor 500, or avoiding insufficient clockwise rotation of the valve stem 300 to cause leakage.

[0100] The rotation limiting groove 113 of this embodiment is equipped with a rotation limiting plate detachably connected to the rotation limiting groove 113. A magnetic attraction layer is arranged in the rotation limiting groove 113, and a magnetic attraction docking layer is arranged on the rotation limiting plate.

[0101] When the fire hydrant needs to be used, it is only necessary to insert a rotation limit plate into the second rotation limit groove 113, and then rotate the valve stem 300 counterclockwise so that the rotation limit rod 910 contacts the rotation limit plate in the second rotation limit groove 113. When the fire hydrant is finished, it is only necessary to insert a rotation limit plate into the first rotation limit groove 113, and then rotate the valve stem 300 clockwise so that the rotation limit rod 910 contacts the rotation limit plate in the first rotation limit groove 113.

[0102] The setting of the rotation limit plate enables the staff to more easily control the rotation degree of the valve stem 300.

[0103] The above embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the concept and scope of the utility model. Without departing from the design concept of the utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the utility model should fall within the protection scope of the utility model, and the technical contents of the utility model for protection have been fully recorded in the claims.

Claims

1. A fire hydrant with a positioning function, characterized in that: include: A fire hydrant main cover (110) with a connecting ring (111) on the top; A fire hydrant cover (120) is detachably connected to the connecting ring body (111); An extruded member (200) connected to a valve stem (300); A buffer pressing piece (400) movably connected to the top plate of the fire hydrant main cover (110); The pressure sensor (500) is connected to the top plate of the fire hydrant main cover (110), and when the valve stem (300) drives the extrusion member (200) to move upward to press the buffer pressing member (400), the buffer pressing member (400) presses the pressure sensor (500); when the valve stem (300) drives the extrusion member (200) to move downward to separate from the buffer pressing member (400), the buffer pressing member (400) separates from the pressure sensor (500); A controller (600) is disposed in the inner cavity of the fire hydrant main cover (110), and the controller (600) is electrically connected to the pressure sensor (500); A GPS positioning module (700) is disposed in the inner cavity of the fire hydrant main cover (110), and the GPS positioning module (700) is electrically connected to the controller (600); The communication module (800) is arranged in the inner cavity of the fire hydrant main cover (110), and the controller (600) is wirelessly connected to the monitoring platform via the communication module (800).

2. The fire hydrant according to claim 1, characterized in that: The buffer pressing member (400) comprises: A first pressing ring plate (410) sleeved with the valve stem (300); A second pressing ring plate (420) sleeved with the valve stem (300); An elastic body (430), wherein a first elastic end of the elastic body (430) is connected to the first pressing ring plate (410), and a second elastic end of the elastic body (430) is connected to the second pressing ring plate (420); A connecting rod (440) whose first lengthwise end is connected to the first pressing ring plate (410); a through hole (112) is provided on the top plate of the fire hydrant main cover (110) to allow the connecting rod (440) to pass through; The hanging member (450) is connected to the second lengthwise end of the connecting rod (440).

3. The fire hydrant according to claim 2, characterized in that: The extrusion part (200) comprises: A connecting sleeve (210) is sleeved with the valve stem (300), and the connecting sleeve (210) is connected to the valve stem (300) via a connecting piece; The extrusion ring plate (220) is sleeved with the valve stem (300), and the extrusion ring plate (220) is connected to the axial top end of the connecting sleeve (210).

4. The fire hydrant according to claim 3, characterized in that: A ball groove is formed on the side of the extrusion ring plate (220) facing the second pressing ring plate (420), and a ball (222) is arranged in the ball groove.

5. The fire hydrant according to claim 3, characterized in that: The extruded component (200) comprises two symmetrically arranged extruded halves; the extruded halves comprise: Connect half set (211); An extruded semi-annular plate (221) is connected to one axial end of the connecting half sleeve (211), and the central axis of the extruded semi-annular plate (221) is the same as the central axis of the connecting half sleeve (211); An assembly orifice plate (212) is arranged on the circumferential side of the connecting half sleeve (211).

6. The fire hydrant according to claim 2, characterized in that: The buffer pressing piece (400) comprises two symmetrically arranged buffer pressing halves; the buffer pressing halves comprise: A first semi-annular plate (411); A first splicing orifice plate (412) arranged on a circumferential side of the first semi-annular plate (411); A second semi-annular plate (421); A second splicing hole plate (422) is arranged on the circumferential side of the second semi-annular plate (421); An elastic body (430), wherein a first elastic end of the elastic body (430) is connected to the first semi-annular plate (411), and a second elastic end of the elastic body (430) is connected to the second semi-annular plate (421); A connecting rod (440), a first lengthwise end of which is connected to the first semi-annular plate (411); The hanging member (450) is connected to the second lengthwise end of the connecting rod (440).

7. The fire hydrant according to claim 6, characterized in that: The connecting rod (440) comprises: A connecting rod segment 1 (441), wherein a first axial end thereof is connected to the first semi-annular plate (411), and a diameter of the connecting rod segment 1 (441) is the same as a diameter of the through hole (112); The second connecting rod segment (442) has one axial end connected to the second axial end of the first connecting rod segment (441), the diameter of the second connecting rod segment (442) is smaller than the diameter of the first connecting rod segment (441), and the second connecting rod segment (442) is provided with a connecting thread for assembly with the hanging member (450).

8. The fire hydrant according to claim 7, characterized in that: The hanging member (450) is a supporting plate provided with a butt-jointed threaded hole.

9. The fire hydrant according to claim 1, characterized in that: The top end of the valve stem (300) is connected to a valve stem rotation auxiliary component (900), and a rotation limiting rod (910) is provided on the valve stem rotation auxiliary component (900); The inner peripheral wall of the connecting ring body (111) is provided with a rotation limiting groove (113).

10. The fire hydrant according to claim 9, characterized in that: The rotation limiting groove (113) is provided with a rotation limiting plate which is detachably connected to the rotation limiting groove (113).

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