Buried fire hydrant

Abstract

The utility model discloses a buried fire hydrant. The buried fire hydrant comprises a buried shell and a pop-up mechanism, an auxiliary shell is arranged on the right side of the buried shell, the bottom wall of the buried shell is rotationally connected with a stud through a bearing, the lower end of the stud is in threaded connection with a lifting seat, and a fire-fighting pipe is arranged at the left end of the lifting seat; the pop-up mechanism comprises a hollow rod, a sliding rod, circular rings and a spring, the hollow rod is rotationally connected to the bottom wall of the auxiliary shell through a bearing, the sliding rod is slidably connected into the hollow rod, the circular rings are arranged on the outer sides of the hollow rod and the sliding rod, the spring is arranged between the circular rings, and the spring is movably connected with the outer sides of the hollow rod and the sliding rod in a sleeving mode; the front end and the rear end of the upper side of the buried shell are hinged to a first top cover through evenly-distributed hinges. According to the buried fire hydrant, the hand wheel can be popped up to the position above the ground by a certain height through the elastic element, the hand wheel can apply rotating torsion conveniently, and firefighters can move the buried fire hydrant to the position above the earth surface without needing to conduct operation on the ground.

Description

Technical Field

[0001] The utility model relates to the technical field of fire hydrants, in particular to an underground fire hydrant. Background Art

[0002] An underground fire hydrant is an outdoor underground fire-fighting water supply facility used to supply water to fire trucks or directly connect to water hoses and water guns for fire extinguishing. It is installed underground and does not affect the city appearance and traffic. It is an indispensable fire-fighting water supply device in cities, factories, mines, power stations, warehouses, docks, residences and public places. Some underground fire hydrants include a concrete base and a fire hydrant. The inner bottom wall of the concrete base is fixedly connected to a base, the top of the base is fixedly connected to a water supply pipe, a fire hydrant is arranged on the top of the water supply pipe, a telescopic pipe fitting is arranged inside the fire hydrant, the telescopic pipe fitting is placed inside the water supply pipe, a sealing ring is fixedly connected to the lower part of the outer surface of the telescopic pipe fitting, and the fire hydrant is provided with a fire hydrant. A movable plate is provided on the outer surface, and a slide rail is fixedly connected to the inner bottom wall of the concrete base, and a screw rod is movably connected to the inner side wall of the slide rail. The buried fire hydrant is convenient for installing the fire hydrant underground by setting a concrete base. The cover plate is opened to drive the rotating rod to rotate, so that the fire hydrant body rises for use by the operator. The lifting structure is a non-electric lifting method, which eliminates safety hazards. However, the rotating rod of the device is located in the concrete base. When the firefighters move the fire hydrant to the ground, they need to lie on the ground and put their hands deep into the concrete base to rotate the rotating rod. Lying on the ground is not convenient for firefighters to apply rotational torque to the rotating rod, and it needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an underground fire hydrant. The device can make a hand wheel pop out to a certain height above the ground through an elastic element. The hand wheel can easily apply rotational torque. Firefighters do not need to work on the ground to move the underground fire hydrant above the ground, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an underground fire hydrant, comprising an underground shell and a pop-up mechanism;

[0005] Buried shell: an auxiliary shell is arranged on the right side thereof, a stud is rotatably connected to the bottom wall of the buried shell through a bearing, a lifting seat is threadedly connected to the lower end of the stud, and a fire-fighting pipe is arranged at the left end of the lifting seat;

[0006] Pop-up mechanism: It includes a hollow rod, a sliding rod, a ring and a spring. The hollow rod is rotatably connected to the bottom wall of the auxiliary shell through a bearing. The inside of the hollow rod is slidably connected to the sliding rod. Rings are provided on the outsides of the hollow rod and the sliding rod. Springs are provided between the rings. The springs are movably connected to the outsides of the hollow rod and the sliding rod respectively. The device can make the handwheel pop out to a certain height above the ground through an elastic element. It is convenient to apply rotational torque to the handwheel. Firefighters can move the underground fire hydrant above the ground without having to work on the ground.

[0007] Furthermore, the front and rear ends of the upper side of the buried shell are hinged with top cover one through evenly distributed hinges, the upper right end of the auxiliary shell is hinged with top cover two through hinges, and the inner upper ends of the buried shell and the auxiliary shell are provided with limit bars, which are respectively installed in cooperation with top cover one and top cover two, and the limit bars respectively limit the closing and flipping of top cover one and top cover two.

[0008] Furthermore, a water supply pipe is penetrated through the bottom wall of the buried shell, and the upper end of the water supply pipe is connected to the lower end of the fire pipe through a bellows, and the lower bellows of the buried fire hydrant can be adaptively retracted.

[0009] Furthermore, the pop-up mechanism also includes a lower clamping seat and an upper clamping seat, the upper clamping seat is arranged at the upper end of the right wall of the auxiliary shell, and the lower clamping seat is arranged on the outer arc surface of the upper circular ring. The lower clamping seat is installed in cooperation with the upper clamping seat to limit the vertical upward movement of the handwheel when the underground fire hydrant is stored.

[0010] Furthermore, the pop-up mechanism also includes a handwheel and a guide groove. The handwheel is arranged at the upper end of the slide rod. The outer side of the slide rod is provided with a guide groove. The interior of the hollow rod is slidably connected to the guide groove through a guide bar, so as to facilitate applying rotational torque to the slide rod.

[0011] Furthermore, the lower end of the right wall of the buried shell is rotatably connected to a rotating shaft through a bearing, and bevel gears are provided at the left and right ends of the rotating shaft, the stud and the outer lower end of the hollow rod. The two adjacent bevel gears are meshed and connected, and the hand wheel indirectly drives the stud to rotate through the meshing of the bevel gears.

[0012] Furthermore, the bottom wall of the buried shell is provided with evenly distributed guide rods, and the guide rods are all slidably connected to the lifting seat, thereby improving the vertical upward movement stability of the buried fire hydrant.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The spring is initially in a compressed state. When the underground fire hydrant is used, the second top cover is first opened, and then the sliding rod is driven to rotate by the hand wheel. The sliding rod indirectly drives the lower clamping seat and the upper clamping seat to rotate horizontally through the circular ring on the upper side, thereby releasing the vertical movement limit of the sliding rod. Then, the sliding rod is moved vertically upward along the hollow rod through the compression elastic force of the spring, so that the hand wheel is moved upward and away from the interior of the buried crust, so that the firefighters can apply a rotational torque to the hand wheel when the underground fire hydrant is moved upward. The underground fire hydrant can make the hand wheel pop up to a certain height above the ground through the elastic element, and it is convenient for the hand wheel to apply a rotational torque, and the firefighters can move the underground fire hydrant above the ground surface without lying on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0018] In the figure: 1 buried shell, 2 auxiliary shell, 3 top cover one, 4 top cover two, 5 water supply pipe, 6 bellows, 7 fire hose, 8 ejection mechanism, 81 hollow rod, 82 slide rod, 83 ring, 84 spring, 85 hand wheel, 86 lower clamping seat, 87 upper clamping seat, 88 guide groove, 9 stud, 10 lifting seat, 11 rotating shaft, 12 bevel gear, 13 guide rod, 14 limit strip. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 ,This embodiment provides a technical solution: an underground fire hydrant, including an underground shell 1 and a pop-up mechanism 8;

[0021] Buried shell 1: an auxiliary shell 2 is provided on its right side, the bottom wall of the buried shell 1 is rotatably connected with a stud 9 through a bearing, the lower end of the stud 9 is threadedly connected with a lifting seat 10, and a fire-fighting pipe 7 is provided at the left end of the lifting seat 10. The front and rear ends of the upper side of the buried shell 1 are hinged with a top cover 3 through evenly distributed hinges, and the upper right end of the auxiliary shell 2 is hinged with a top cover 2 4 through a hinge. The inner upper ends of the buried shell 1 and the auxiliary shell 2 are provided with a limit strip 14, and the limit strip 14 is respectively installed with the top cover 3 and the top cover 2 4. A water supply pipe 5 is penetrated through the bottom wall of the buried shell 1, and the upper end of the water supply pipe 5 is connected to the lower end of the fire-fighting pipe 7 through a bellows 6. The lower end of the right wall of the buried shell 1 is rotatably connected with a rotating shaft 11 through a bearing, and bevel gears 12 are provided at the left and right ends of the rotating shaft 11, the stud 9 and the lower end of the outer side of the hollow rod 81, and the two adjacent bevel gears 12 are meshed and connected. The bottom wall of the buried shell 1 There are evenly distributed guide rods 13, which are all slidably connected to the lifting seat 10. The firefighter turns the hand wheel 85, and the hollow rod 81 is rotated through the clamping connection between the guide groove 88 and the guide bar. The hollow rod 81 is connected by meshing between the bevel gears 12, so that the stud 9 is rotated. The stud 9 is threadedly connected, so that the lifting seat 10 drives the fire hose 7 to move above the ground, which is convenient for subsequent firefighters to connect the fire gun with the fire hose 7 for use. During the upward movement of the fire hose 7, the guide rods 13 are used to assist the vertical movement of the lifting seat 10 to improve the upward movement stability of the fire hose 7. During the upward movement of the fire hose 7, the top cover 3 is opened by contact pressure, and the bellows 6 is adaptively stretched as the fire hose 7 moves upward. When the fire hydrant is not in use and is buried in the crust 1, the top cover 3 and the top cover 4 are closed and flipped respectively by the limit strips 14;

[0022] Pop-up mechanism 8: It includes a hollow rod 81, a slide bar 82, a ring 83 and a spring 84. The hollow rod 81 is rotatably connected to the bottom wall of the auxiliary shell 2 through a bearing. The inside of the hollow rod 81 is slidably connected to the slide bar 82. The outer sides of the hollow rod 81 and the slide bar 82 are both provided with a ring 83. A spring 84 is provided between the rings 83. The spring 84 is movably sleeved with the outer sides of the hollow rod 81 and the slide bar 82 respectively. The pop-up mechanism 8 also includes a lower card seat 86 and an upper card seat 87. The upper card seat 87 is arranged at the upper end of the right wall of the auxiliary shell 2. The lower card seat 86 is arranged on the outer arc surface of the ring 83 on the upper side. The lower card seat 86 is installed in cooperation with the upper card seat 87. The pop-up mechanism 8 also includes a hand wheel 85 and a guide groove 88. The hand wheel 85 is arranged at the upper end of the slide bar 82. The outer side of the slide bar 82 is provided with a guide groove 88. The inside of the hollow rod 81 slides with the guide groove 88 through a guide bar. The spring 84 is initially in a compressed state. When the underground fire hydrant is used, the top cover 4 is first opened, and then the slide bar 82 is driven to rotate by the hand wheel 85. The slide bar 82 indirectly drives the lower clamping seat 86 and the upper clamping seat 87 to rotate horizontally through the upper ring 83, thereby releasing the vertical movement limit of the slide bar 82. Then, the compression elastic force of the spring 84 makes the slide bar 82 move vertically upward along the hollow rod 81, so that the hand wheel 85 moves up and away from the interior of the buried shell 1, which is convenient for firefighters to apply rotational torque to the hand wheel 85 when the underground fire hydrant moves up. During this process, the guide bar and the guide groove 88 slide adaptively. The underground fire hydrant can make the hand wheel 85 pop out to a certain height above the ground through the elastic element, and the hand wheel 85 can apply rotational torque conveniently. Firefighters can move the underground fire hydrant above the ground surface without lying on the ground.

[0023] The working principle of an underground fire hydrant provided by the utility model is as follows: the spring 84 is initially in a compressed state. When using the underground fire hydrant, first open the top cover 4, then drive the slide bar 82 to rotate through the hand wheel 85, and the slide bar 82 indirectly drives the lower clamping seat 86 and the upper clamping seat 87 to rotate horizontally through the upper ring 83, thereby releasing the vertical movement limit of the slide bar 82, and then the compression elastic force of the spring 84 causes the slide bar 82 to move vertically upward along the hollow rod 81, so that the hand wheel 85 moves up and away from the inside of the buried shell 1, so that the firefighters can apply a rotational torque to the hand wheel 85 when the underground fire hydrant moves up. In this process, the guide bar and the guide groove 88 slide adaptively, and then the firefighters turn the hand wheel 85 through the guide groove The card connection between 88 and the guide bar causes the hollow rod 81 to rotate, and the hollow rod 81 is meshed and connected with the bevel gears 12 to cause the stud 9 to rotate. The stud 9 is threadedly connected so that the lifting seat 10 drives the fire hose 7 to move above the ground, which is convenient for subsequent firefighters to connect the fire gun with the fire hose 7 for use. During the upward movement of the fire hose 7, the guide rod 13 is used to assist in supporting the vertical movement of the lifting seat 10 to improve the upward movement stability of the fire hose 7. During the upward movement of the fire hose 7, the top cover 3 is opened by contact pressure, and the corrugated tube 6 adaptively extends as the fire hose 7 moves upward. When the fire hydrant is not in use and is buried in the crust 1, the top cover 3 and the top cover 2 4 are closed and flipped respectively by the limit strips 14.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An underground fire hydrant, characterized in that: It comprises a buried shell (1) and an ejection mechanism (8); The buried shell (1) has an auxiliary shell (2) on its right side. The bottom wall of the buried shell (1) is rotatably connected to a stud (9) via a bearing. The lower end of the stud (9) is threadedly connected to a lifting seat (10). The left end of the lifting seat (10) is provided with a fire-fighting pipe (7). The ejection mechanism (8) comprises a hollow rod (81), a slide rod (82), a ring (83) and a spring (84). The hollow rod (81) is rotatably connected to the bottom wall of the auxiliary shell (2) via a bearing. The inside of the hollow rod (81) is slidably connected to the slide rod (82). The outer sides of the hollow rod (81) and the slide rod (82) are both provided with rings (83). A spring (84) is provided between the rings (83). The spring (84) is movably sleeved with the outer sides of the hollow rod (81) and the slide rod (82) respectively.

2. The underground fire hydrant according to claim 1, characterized in that: The front and rear ends of the upper side of the buried shell (1) are hingedly connected to a top cover (3) through evenly distributed hinges, and the upper right end of the auxiliary shell (2) is hingedly connected to a top cover (4) through a hinge. The upper ends of the buried shell (1) and the auxiliary shell (2) are both provided with limit strips (14), and the limit strips (14) are respectively mounted in cooperation with the top cover (3) and the top cover (4).

3. The underground fire hydrant according to claim 1, characterized in that: A water supply pipe (5) is provided through the bottom wall of the buried shell (1), and the upper end of the water supply pipe (5) is connected to the lower end of the fire fighting pipe (7) through a corrugated pipe (6).

4. The underground fire hydrant according to claim 1, characterized in that: The ejection mechanism (8) further comprises a lower card seat (86) and an upper card seat (87), wherein the upper card seat (87) is arranged at the upper end of the right wall of the auxiliary shell (2), and the lower card seat (86) is arranged on the outer arc surface of the upper circular ring (83), and the lower card seat (86) and the upper card seat (87) are installed in coordination.

5. The underground fire hydrant according to claim 1, characterized in that: The ejection mechanism (8) further comprises a hand wheel (85) and a guide groove (88), wherein the hand wheel (85) is arranged at the upper end of the slide rod (82), the outer side of the slide rod (82) is provided with a guide groove (88), and the interior of the hollow rod (81) is slidably connected to the guide groove (88) via a guide bar.

6. The underground fire hydrant according to claim 1, characterized in that: The lower end of the right wall of the buried shell (1) is rotatably connected to a rotating shaft (11) via a bearing, and bevel gears (12) are provided at the left and right ends of the rotating shaft (11), the stud (9) and the lower end of the outer side of the hollow rod (81), and two adjacent bevel gears (12) are meshedly connected.

7. The underground fire hydrant according to claim 1, characterized in that: The bottom wall of the buried shell (1) is provided with evenly distributed guide rods (13), and the guide rods (13) are all slidably connected to the lifting seat (10).

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