Anti-theft outdoor post fire hydrant

Abstract

The utility model discloses an anti-theft outdoor post fire hydrant. The anti-theft outdoor post fire hydrant comprises a fire hydrant main body, a valve rod and a brake device, the brake device is arranged at the top of the fire hydrant body, a remote control key is used for controlling the motor to unlock through the controller, the second gear recovers free rotation, accordingly rotation limitation of the valve rod is relieved, firefighters can directly operate the hand wheel to control opening and closing of the fire hydrant body, the valve rod does not need to be rotated with the help of a fire wrench, and the fire hydrant is convenient to use. When the fire hydrant body is idle, a remote control key is used for controlling the motor to enter a locking state through the controller, the angle of the second gear is locked, and after the angle of the second gear is locked, the first gear is clamped to limit rotation of the first gear, so that the angle of the valve rod is locked, and the situation that fire fighting water is stolen due to the fact that other people start the fire hydrant body is prevented.

Description

Technical Field

[0001] The utility model relates to the field of fire hydrant technology, in particular to an anti-theft outdoor ground fire hydrant. Background Art

[0002] Fire hydrants are urban public fire-fighting facilities dedicated to fire departments. They are usually sealed by water supply companies and are important fire-fighting facilities for fire departments to fight fires. They are installed on the fire-fighting water supply network outside the building. They are mainly used for fire trucks to draw water from the municipal water supply network or the outdoor fire-fighting water supply network to implement fire-fighting. They can also be directly connected to water hoses and water guns to discharge water for fire-fighting.

[0003] Existing patent application number: CN201520555241.2 An outdoor fire hydrant that does not leak after being hit, includes a bolt body, a valve body, a valve stem and a valve disc for preventing water from flowing into the valve body. The lower part of the bolt body is fixedly connected to the upper part of the valve body. The utility model connects the upper valve stem part and the lower valve stem part together through a trapezoidal clutch, so that no matter the user operates clockwise or counterclockwise, the first trapezoidal clutch part and the second trapezoidal clutch part in the trapezoidal clutch will not be disengaged to affect the user's use.

[0004] In order to prevent unauthorized personnel from opening the fire hydrant privately and stealing fire water, outdoor fire hydrants are usually not equipped with handwheels. Instead, a special fire wrench is used to control the rotation of the valve stem. However, the fire wrench is limited by its shape and is not as convenient to use as a handwheel, which makes the opening and closing control of the fire hydrant more troublesome. The anti-theft function of the fire hydrant can be designed to make its opening and closing control more convenient. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides an anti-theft outdoor ground fire hydrant.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-theft outdoor ground fire hydrant, comprising a fire hydrant body, a valve stem and a braking device, a valve stem is arranged on the top of the fire hydrant body, the valve stem is connected to the valve core inside the fire hydrant body, a braking device is arranged on the top of the fire hydrant body, the braking device comprises a shell, a through port, a No. 1 gear, a motor, a No. 2 gear, a controller, a battery, a remote control key and a hand wheel, a through port is arranged through the middle of the top surface of the shell, the shell passes through the valve stem surface through the through port and is connected to the top flange of the fire hydrant body, a No. 1 gear is sleeved on the surface of the valve stem, a motor is installed on the top surface of the inner side of the shell, a No. 2 gear is installed on the output shaft at the bottom of the motor, and the No. 2 gear is meshed with the side of the No. 1 gear, a controller is installed on the inner left side of the shell, the controller and the motor establish a wired control connection, a battery is installed on the inner right side of the shell, the motor and the controller are both powered by the battery, the controller and the remote control key establish a wireless control connection, and a hand wheel is fixed on the top of the valve stem.

[0007] Preferably, the motor is equipped with a shaft locking function.

[0008] Preferably, the wireless connection range between the controller and the remote control key is not less than 5m.

[0009] Preferably, the housing is made of cast iron.

[0010] Preferably, a shaft sleeve is provided on the surface of the valve stem, and the inner side of the shaft sleeve is rotatably connected to the valve stem through a bearing. The shaft sleeve matches the cross-sectional shape of the through port. When the shell is installed to the top of the fire hydrant body, the shaft sleeve will be directionally inserted into the inner side of the through port, so that the shell is rotatably connected to the valve stem through the shaft sleeve.

[0011] Preferably, a gasket is bonded and fixed to the bottom of the sleeve, and the diameter of the gasket is larger than the diameter of the through opening.

[0012] Beneficial effects of the utility model:

[0013] The utility model arranges a braking device on the top of the fire hydrant body, and uses a remote control key to control the motor to unlock through the controller, so that the No. 2 gear can resume free rotation, thereby releasing the rotation restriction of the valve stem, and the firefighter can directly operate the hand wheel to control the opening and closing of the fire hydrant body without the need to use a fire wrench to rotate the valve stem, which is more convenient to operate. When the fire hydrant body is idle, the remote control key is used to control the motor to enter a locked state through the controller, so that the angle of the No. 2 gear is locked. After the angle of the No. 2 gear is locked, the No. 1 gear will be stuck and restricted from rotating, thereby locking the angle of the valve stem, preventing others from activating the fire hydrant body and causing the fire water to be stolen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a front view structural diagram of the fire hydrant main body in the utility model;

[0016] Figure 3 This utility model Figure 2 Schematic diagram of the local structure;

[0017] Figure 4 It is a schematic diagram of the top view of the shaft sleeve of the utility model;

[0018] Figure 5 It is a schematic diagram of the top view of the shell body in the utility model.

[0019] Among them: fire hydrant body-1, valve stem-2, brake device-3, shell-31, port-32, gear No. 1-33, motor-34, gear No. 2-35, controller-36, battery-37, remote control key-38, handwheel-39, sleeve-310, gasket-311. DETAILED DESCRIPTION

[0020] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0021] See also Figure 1-3 The utility model provides an anti-theft outdoor ground fire hydrant, including a fire hydrant body 1, a valve stem 2 and a brake device 3. The fire hydrant body 1 is provided with a valve stem 2 on the top, and the valve stem 2 is connected to the valve core inside the fire hydrant body 1. The fire hydrant body 1 is provided with a brake device 3 on the top, and the brake device 3 includes a shell 31, a through port 32, a first gear 33, a motor 34, a second gear 35, a controller 36, a battery 37, a remote control key 38 and a hand wheel 39. The shell 31 is provided with a through port 32 in the middle of the top surface, and the shell 31 passes through the surface of the valve stem 2 through the through port 32 and is connected to the fire hydrant body. 1 is connected with the top flange, a first gear 33 is sleeved on the surface of the valve stem 2, a motor 34 is installed on the top surface of the inner side of the shell 31, a second gear 35 is installed on the output shaft at the bottom of the motor 34, and the second gear 35 is meshed with the side of the first gear 33, a controller 36 is installed on the left side of the inner side of the shell 31, and the controller 36 establishes a wired control connection with the motor 34, a battery 37 is installed on the right side of the inner side of the shell 31, the motor 34 and the controller 36 are both powered by the battery 37, and the controller 36 establishes a wireless control connection with the remote control key 38, and a hand wheel 39 is fixed on the top of the valve stem 2.

[0022] To further explain, the motor 34 is equipped with a shaft locking function, and the motor 34 achieves the shaft locking function through a mechanical brake or an electromagnetic brake. After the angle of the second gear 35 is locked, the first gear 33 will be stuck and restricted from rotating, thereby locking the angle of the valve stem 2 to prevent others from activating it.

[0023] To further illustrate, the wireless connection range between the controller 36 and the remote control key 38 is not less than 5 m.

[0024] To further explain, the housing 31 is made of cast iron, which has excellent strength and wear resistance, and prevents others from damaging the brake device 3.

[0025] See also Figure 4-5 In the utility model, a sleeve 310 is sleeved on the surface of the valve stem 2, and the inner side of the sleeve 310 is rotatably connected to the valve stem 2 through a bearing. The sleeve 310 matches the cross-sectional shape of the through opening 32. When the shell 31 is installed to the top of the fire hydrant body 1, the sleeve 310 will be directionally inserted into the inner side of the through opening 32, so that the shell 31 is rotatably connected to the valve stem 2 through the sleeve 310.

[0026] To further explain, a gasket 311 is bonded and fixed to the bottom of the sleeve 310, and the diameter of the gasket 311 is larger than the diameter of the opening 32. When the sleeve 310 is fully inserted into the inner side of the opening 32, the gasket 311 can cover the bottom surface of the opening 32 to improve the sealing of the opening 32 and prevent water from entering the shell 31.

[0027] Here’s how it works:

[0028] First, when installing the brake device 3, first, put the shell 31 from top to bottom onto the surface of the valve stem 2. During this process, the second gear 35 will engage with the first gear 33, and the sleeve 310 will be directional inserted into the inner side of the opening 32, so that the shell 31 is rotatably connected to the valve stem 2 through the sleeve 310, and then the shell 31 is connected to the top flange of the fire hydrant body 1, and finally the hand wheel 39 is installed to the top of the valve stem 2, thereby completing the installation of the brake device 3.

[0029] Second, by providing a gasket 311 at the bottom of the sleeve 310 , when the sleeve 310 is fully inserted into the inner side of the opening 32 , the gasket 311 can cover the bottom surface of the opening 32 , thereby improving the sealing performance of the opening 32 and preventing water from entering the shell 31 .

[0030] Third, by setting a braking device 3 on the top of the fire hydrant body 1, the battery 37 supplies power to the controller 36 and the motor 34. When the fire hydrant body 1 is idle, the remote control key 38 is used to control the motor 34 to enter a locked state through the controller 36, so that the angle of the No. 2 gear 35 is locked. After the angle of the No. 2 gear 35 is locked, the No. 1 gear 33 will be stuck and restricted from rotating, thereby locking the angle of the valve stem 2 to prevent others from activating the fire hydrant body 1 and causing the fire water to be stolen.

[0031] Fourth, when firefighters need to use the fire hydrant body 1, they use the remote control key 38 to control the motor 34 through the controller 36 to unlock the lock, so that the second gear 35 can resume free rotation, thereby removing the rotation restriction of the valve stem 2. Firefighters can directly operate the hand wheel 39 to control the opening and closing of the fire hydrant body 1 without the need to use a fire wrench to rotate the valve stem 2, which makes the operation more convenient.

[0032] The utility model provides an anti-theft outdoor ground fire hydrant, by arranging a braking device 3 on the top of the fire hydrant body 1, using a remote control key 38 to control the motor 34 through the controller 36 to release the lock, so that the second gear 35 resumes free rotation, thereby releasing the rotation restriction of the valve stem 2, and the firefighter can directly operate the hand wheel 39 to control the opening and closing of the fire hydrant body 1, without the need to use a fire wrench to rotate the valve stem 2, the operation is more convenient, when the fire hydrant body 1 is idle, using the remote control key 38 to control the motor 34 through the controller 36 to enter a locked state, so that the angle of the second gear 35 is locked, and after the angle of the second gear 35 is locked, the first gear 33 will be stuck and restricted from rotating, thereby locking the angle of the valve stem 2, preventing others from activating the fire hydrant body 1 and causing the fire water to be stolen.

[0033] The above description is only a preferred example of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An anti-theft outdoor ground fire hydrant, comprising a fire hydrant body (1) and a valve stem (2), wherein the fire hydrant body (1) is provided with a valve stem (2) at the top, and the valve stem (2) is connected to a valve core inside the fire hydrant body (1); Features: The fire hydrant body (1) also includes a brake device (3). The brake device (3) is arranged on the top of the fire hydrant body (1). The brake device (3) includes a shell (31), a through port (32), a first gear (33), a motor (34), a second gear (35), a controller (36), a storage battery (37), a remote control key (38) and a hand wheel (39). The shell (31) is provided with a through port (32) in the middle of the top surface. The shell (31) passes through the surface of the valve stem (2) through the through port (32) and is connected to the top flange of the fire hydrant body (1). The surface of the valve stem (2) is sleeved with the first gear (33). The shell (31) is provided with a through port (32) and a second gear (33) is sleeved on the surface of the valve stem (2). 1) A motor (34) is installed on the inner top surface, a second gear (35) is installed on the bottom output shaft of the motor (34), and the second gear (35) is meshed with the side of the first gear (33), a controller (36) is installed on the inner left part of the shell (31), and the controller (36) and the motor (34) are connected by wired control, a battery (37) is installed on the inner right part of the shell (31), the motor (34) and the controller (36) are both powered by the battery (37), the controller (36) and the remote control key (38) are connected by wireless control, and a hand wheel (39) is fixed on the top of the valve stem (2).

2. According to claim 1, the anti-theft outdoor ground fire hydrant is characterized by: The motor (34) is equipped with a shaft locking function.

3. According to claim 1, the anti-theft outdoor ground fire hydrant is characterized by: The wireless connection range between the controller (36) and the remote control key (38) is not less than 5m.

4. The anti-theft outdoor ground fire hydrant according to claim 1, characterized in that: The housing (31) is made of cast iron.

5. The anti-theft outdoor ground fire hydrant according to claim 1, characterized in that: The surface of the valve stem (2) is sleeved with a shaft sleeve (310), and the inner side of the shaft sleeve (310) is rotatably connected to the valve stem (2) via a bearing. The shaft sleeve (310) matches the cross-sectional shape of the through opening (32). When the housing (31) is mounted on the top of the fire hydrant body (1), the shaft sleeve (310) is directionally inserted into the inner side of the through opening (32), so that the housing (31) is rotatably connected to the valve stem (2) via the shaft sleeve (310).

6. The anti-theft outdoor ground fire hydrant according to claim 5, characterized in that: A washer (311) is bonded and fixed to the bottom of the shaft sleeve (310), and the diameter of the washer (311) is greater than the diameter of the through opening (32).

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