Buried fire hydrant

Abstract

The underground fire hydrant comprises a prefabricated box, a rapid pulling and closing mechanism and a buffering mechanism, the front side of the upper end of the prefabricated box is hinged to an end cover through a hinge, the left inner wall and the right inner wall of the prefabricated box are each provided with a guide groove, an installation block is connected between the two guide grooves in a sliding mode, and a hydrant body is arranged in an installation opening in the middle of the upper end of the installation block; the left side and the right side of the upper end of the hydrant body are each provided with a hydrant cover, the middle of the lower end of the hydrant body is provided with a water inlet, the rapid pulling and closing mechanism is arranged at the upper end of the interior of the prefabricated box, and the buffering mechanism is arranged at the lower end of the interior of the prefabricated box. Usually, city appearance and traffic are not affected, the situation that the service life of the fire hose is shortened due to friction between the fire hose and the well edge is avoided, the buffering effect is achieved when the fire hose is withdrawn, the hydrant body cannot be damaged, and the buffering effect is achieved when the fire hose is withdrawn.

Description

Technical Field

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

[0002] Fire hydrants, also known as fire hydrants, are an important fixed fire-fighting facility. As a component of the fire water system, fire hydrants can provide necessary fire-fighting water when a fire occurs, which helps firefighters to effectively extinguish the fire. Buried fire hydrants are 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. They are special facilities for outdoor essential fire-fighting water supply. They are installed underground and do not affect the city appearance and traffic. When firefighters need to use water to extinguish the fire, they find the nearest underground fire hydrant, open the end cover, remove the hydrant cover, install the fire water pipe and open the water valve to transport the fire water to the fire scene. There are some problems. Traditional buried fire hydrants are mostly located in underground fire wells. When fire hydrants are needed in emergencies such as fires, it is not convenient to quickly remove the hydrant cover and install the fire water pipe. The fire water pipe will be placed on the edge of the well when it is led upward from the well. The friction with the well edge for a long time will greatly reduce the service life of the fire water pipe. For this reason, we propose an underground fire hydrant. 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, which can quickly pull out and retract the fire hydrant body, facilitate the quick removal of the hydrant cover and the installation of the fire water pipe, and does not affect the city appearance and traffic at ordinary times. At the same time, it avoids the friction between the fire water pipe and the well edge to reduce the service life of the water pipe. It also has a buffering effect when retracted and will not damage the hydrant body, 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 a prefabricated box, a quick draw-and-close mechanism and a buffer mechanism;

[0005] Prefabricated box: The front side of the upper end thereof is hinged with an end cover, the left and right inner walls of the prefabricated box are provided with guide grooves, a mounting block is slidably connected between the two guide grooves, a bolt body is provided in the mounting opening in the middle of the upper end of the mounting block, bolt covers are provided on the left and right sides of the upper end of the bolt body respectively, and a water inlet is provided in the middle of the lower end of the bolt body;

[0006] Quick draw-and-close mechanism: It is arranged at the upper end of the interior of the prefabricated box;

[0007] Buffer mechanism: It is arranged at the lower end of the interior of the prefabricated box. The upper end of the buffer mechanism is installed in conjunction with the bottom end of the mounting block. It can quickly pull out and retract the fire hydrant body, facilitate quick removal of the hydrant cover and installation of the fire water pipe, and does not affect the city appearance and traffic at ordinary times. It also avoids the friction between the fire water pipe and the well edge to reduce the service life of the water pipe. It also has a buffering effect when it is retracted and will not damage the hydrant body. It also has a buffering effect when it is retracted and will not damage the hydrant body.

[0008] Furthermore, the quick-pull-and-close mechanism includes a slide groove, a stabilizing block and a spring. The slide groove is respectively opened at the upper ends of the left and right inner walls of the prefabricated box. The stabilizing blocks are slidably connected to the inside of the slide groove. The outer ends of the stabilizing blocks are respectively installed in cooperation with the left and right sides of the mounting block. A spring is provided between the inner end of the stabilizing block and the inner wall of the slide groove, which can make the bolt body more stable when moving.

[0009] Furthermore, the quick-pull-and-close mechanism also includes a second slide groove, a locking block and a second spring. The second slide groove is opened at the upper end of the rear side wall of the prefabricated box, and the locking block is slidably connected to the inside of the second slide groove. The outer end of the locking block is cooperated with the rear side of the mounting block, and a second spring is provided between the inner end of the locking block and the inner wall of the second slide groove, which can quickly fix the bolt body.

[0010] Furthermore, the quick-pull-and-close mechanism also includes a sliding handle and a sliding handle groove. The sliding handle groove is opened in the middle of the upper rear side of the prefabricated box. The sliding handle groove is connected to the sliding groove 2. The sliding handle is slidably connected to the inside of the sliding handle groove. The lower end of the sliding handle is fixedly connected to the upper rear side of the locking block, so that the bolt body can be quickly retracted.

[0011] Furthermore, the buffer mechanism includes a base support, a sliding hole, a sliding column, a top plate and a buffer spring. The base support is respectively fixedly connected to the lower ends of the left and right inner walls of the prefabricated box. The bottom support is provided with a sliding hole. The sliding columns are slidably connected to the inside of the sliding hole. The top plates are fixedly connected to the upper ends of the sliding columns. The upper ends of the top plates are fitted with the bottom ends of the mounting blocks. Buffer springs are provided between the lower ends of the top plates and the upper ends of the base support. The buffer springs are sleeved on the outer surfaces of the sliding columns, which can provide a buffer effect for the retraction of the bolt body.

[0012] Furthermore, a avoidance opening is provided in the middle of the front end of the prefabricated box, and the avoidance opening is longitudinally adjacent to the water inlet, thereby providing a avoidance effect for the external water inlet pipe.

[0013] Furthermore, the prefabricated box is a structure with four sides inclined downward toward the middle, so that the accumulated water in the box can be quickly drained.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] When it is necessary to pull out the bolt body, the operator opens the end cover and grabs the edge of the bolt body to pull out the bolt body completely. As the mounting block moves upward, the upper surface of the rear side of the mounting block contacts the locking block, and the locking block is squeezed and slowly slides backwards. Spring 2 is compressed under force. After the rear side of the mounting block has completely passed the locking block, spring 2 rebounds without force, and the locking block returns to its original position, forming a limit for the mounting block. The left and right sides of the mounting block also contact the stabilizing block at the same time, and the two stabilizing blocks are squeezed and slide outward. Spring 1 is compressed under force. After the left and right sides of the mounting block pass the stabilizing block, spring 1 rebounds without force, and the stabilizing block returns to its original position, forming an auxiliary stabilizing effect on the mounting block, which facilitates and quickly removes the bolt cover and installs the fire water pipe, while also avoiding the friction between the fire water pipe and the well edge, which reduces the service life of the water pipe. When retracting the bolt body, the operator slightly lifts the bolt upward with one hand The left and right sides of the mounting block also contact the stabilizing block at the same time again, and the two stabilizing blocks are squeezed and slide outward, and the spring one is compressed under force until the left and right sides of the mounting block pass through the stabilizing block, and the spring one rebounds without force, and the stabilizing block returns to its original position, which increases the friction for the retraction of the bolt body and prevents the bolt body from falling quickly and damaging the bolt body, until the bottom end of the mounting block contacts the top plate, and the weight of the bolt body quickly presses down the top plate, and the sliding column slides downward at the same time, and the buffer spring is compressed again. At this time, the elastic deformation of the buffer spring absorbs the impact force when the bolt body falls, effectively preventing damage to the bolt body. Then close the end cover, and the retraction of the bolt body is completed, which does not affect the city appearance and traffic and is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the quick draw-and-close mechanism and the buffer mechanism of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the quick draw-and-close mechanism of the utility model.

[0019] In the figure: 1 prefabricated box, 2 end cover, 3 mounting block, 4 bolt body, 5 bolt cover, 6 water inlet, 7 quick draw-in mechanism, 71 slide groove 1, 72 stabilizing block, 73 spring 1, 74 slide groove 2, 75 locking block, 76 spring 2, 77 slide handle, 78 slide handle groove, 8 buffer mechanism, 81 bottom support, 82 slide hole, 83 slide column, 84 top plate, 85 buffer spring, 9 guide groove, 10 avoidance opening. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-3 , This embodiment provides a technical solution: an underground fire hydrant, comprising a prefabricated box 1, a quick draw-in mechanism 7 and a buffer mechanism 8;

[0022] Prefabricated box 1: The front side of its upper end is hinged with an end cover 2 through a hinge. The left and right inner walls of the prefabricated box 1 are provided with guide grooves 9 to guide the movement of the bolt body. A mounting block 3 is slidably connected between the two guide grooves 9. A bolt body 4 is provided in the mounting opening in the middle of the upper end of the mounting block 3. Bolt covers 5 are provided on the left and right sides of the upper end of the bolt body 4, respectively. A water inlet 6 is provided in the middle of the lower end of the bolt body 4. A avoidance opening 10 is provided in the middle of the front end of the prefabricated box 1. The avoidance opening 10 is longitudinally adjacent to the water inlet 6 to provide an avoidance effect for the external water inlet pipe. The prefabricated box 1 is a structure with all sides tilted downward toward the middle, which can quickly discharge the accumulated water in the box;

[0023] Quick-drawing mechanism 7: It is arranged at the upper end of the interior of the prefabricated box 1. The quick-drawing mechanism 7 includes a slide groove 71, a stabilizing block 72 and a spring 73. The slide groove 71 is respectively opened at the upper ends of the left and right inner walls of the prefabricated box 1. The stabilizing blocks 72 are slidably connected to the inside of the slide groove 71. The outer ends of the stabilizing blocks 72 are respectively installed with the left and right sides of the mounting block 3. A spring 73 is arranged between the inner end of the stabilizing block 72 and the inner wall of the slide groove 71, which can make the bolt body more stable when moving. The quick-drawing mechanism 7 also includes a slide groove 74, a locking block 75 and a spring 76. The slide groove 74 is opened at the upper ends of the left and right inner walls of the prefabricated box 1. The locking block 75 is slidably connected to the interior of the second slide slot 74 at the upper end of the rear side wall of the prefabricated box 1. The outer end of the locking block 75 is cooperated with the rear side of the mounting block 3 to be installed. A second spring 76 is provided between the inner end of the locking block 75 and the inner wall of the second slide slot 74, which can quickly fix the bolt body. The quick-drawing mechanism 7 also includes a sliding handle 77 and a sliding handle groove 78. The sliding handle groove 78 is opened in the middle of the upper rear side of the prefabricated box 1. The sliding handle groove 78 is connected to the second slide slot 74. The sliding handle 77 is slidably connected to the interior of the sliding handle groove 78. The lower end of the sliding handle 77 is fixedly connected to the upper rear side of the locking block 75, so that the bolt body can be quickly retracted.

[0024] Buffer mechanism 8: It is arranged at the lower end of the interior of the prefabricated box 1, and the upper end of the buffer mechanism 8 is installed in cooperation with the bottom end of the mounting block 3. The buffer mechanism 8 includes a bottom bracket 81, a sliding hole 82, a sliding column 83, a top sheet 84 and a buffer spring 85. The bottom bracket 81 is fixedly connected to the lower ends of the left and right inner walls of the prefabricated box 1, and the bottom bracket 81 is provided with a sliding hole 82. The sliding column 83 is slidably connected to the inside of the sliding hole 82. The top sheet 84 is fixedly connected to the upper end of the sliding column 83, and the upper end of the top sheet 84 is in contact with the bottom end of the mounting block 3. A buffer spring 85 is provided between the lower end of the top plate 84 and the upper end of the bottom support 81. The buffer spring 85 is sleeved on the outer surface of the sliding column 83, which can provide a buffer effect for the retraction of the tether body, and can quickly pull out and retract the fire hydrant tether body, which is convenient for quick removal of the tether cover and installation of the fire water pipe. It does not affect the city appearance and traffic at ordinary times, and also avoids the friction between the fire water pipe and the well edge to reduce the service life of the water pipe. It also has a buffer effect when it is retracted and will not damage the tether body. It also has a buffer effect when it is retracted and will not damage the tether body.

[0025] The working principle of an underground fire hydrant provided by the utility model is as follows: when the underground fire hydrant needs to be used, the operator first opens the end cover 2, then grabs the edge of the bolt body 4, pulls the bolt body 4, the mounting block 3 and the water inlet 6 upward, and the bottom end of the mounting block 3 leaves the upper end of the top plate 84, and the buffer spring 85 is not expanded without force, and moves upward with the top plate 84 and the sliding column 83 until the buffer spring 85 reaches the elastic limit, which is convenient for the operator to pull out the bolt body. As the mounting block 3 moves upward, the upper surface of the rear side of the mounting block 3 contacts the locking block 75, and the locking block 75 is squeezed and slowly slides backward, and the spring 2 76 is compressed by force until the rear side of the mounting block 3 is completely passed. When the locking block 75 and the spring 2 76 are not forced to rebound, the locking block 75 returns to its original position, and the upper end of the locking block 75 is in contact with the rear bottom end of the mounting block 3 to limit the mounting block 3. At the same time, the left and right sides of the mounting block 3 also contact the stabilizing block 72 at the same time. The two stabilizing blocks 72 are squeezed and slide outward, and the spring 1 73 is compressed by the force until the left and right sides of the mounting block 3 pass the stabilizing block 72. The spring 1 73 rebounds without force, and the stabilizing block 72 returns to its original position, forming an auxiliary stabilizing effect on the mounting block 3. At this time, the bolt body 4 is completely pulled out of the prefabricated box 1, which is convenient for quick removal of the bolt cover 4 and installation of the fire water pipe, while also avoiding friction between the fire water pipe and the well edge to cause the water pipe to rub The service life of the fire hydrant is reduced, and the spilled water will quickly enter the drainage groove in the middle of the bottom of the prefabricated box 1 along the inclined bottom wall, effectively preventing water accumulation. When the fire hydrant is used, it is necessary to retract the fire hydrant, remove the fire water pipe, install the hydrant cover 5, and then the operator slightly lifts the hydrant body 4 upward with one hand, and the rear bottom end of the mounting block 3 leaves the upper end of the locking block 75 to prevent the locking block 75 from being pressed and unable to move. The sliding handle 77 is quickly pushed backward with one hand, and the sliding handle 77 moves backward with the locking block 75, and the spring 2 76 is compressed. At this time, the rear side of the mounting block 3 is not restricted, and the hydrant body 4 slides downward by its own weight. At the same time, the left and right sides of the mounting block 3 also contact the stabilizing block 72 again at the same time, and the two stabilizing blocks 72 are The fixed block 72 is squeezed and slides outward, and the spring 1 73 is compressed under the force until the left and right sides of the mounting block 3 pass the stabilizing block 72. The spring 1 73 rebounds without force, and the stabilizing block 72 returns to its original position, increasing the friction for the retraction of the bolt body 4 to prevent the bolt body 4 from falling rapidly and damaging the bolt body, until the bottom end of the mounting block 3 contacts the top plate 84. The weight of the bolt body quickly presses down the top plate 84, and the sliding column 83 slides downward at the same time, and the buffer spring 85 is compressed again. At this time, the elastic deformation of the buffer spring 85 absorbs the impact force when the bolt body falls, effectively preventing damage to the bolt body. Then the end cover 2 is closed, and the retraction of the bolt body is completed. It does not affect the city appearance and traffic, and is very convenient.

[0026] 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 prefabricated box (1), a quick draw-in mechanism (7) and a buffer mechanism (8); Prefabricated box (1): an end cover (2) is hingedly connected to the front side of the upper end thereof by a hinge, guide grooves (9) are provided on both the left and right inner walls of the prefabricated box (1), a mounting block (3) is slidably connected between the two guide grooves (9), a bolt body (4) is provided in a mounting opening in the middle of the upper end of the mounting block (3), bolt covers (5) are provided on the left and right sides of the upper end of the bolt body (4), and a water inlet (6) is provided in the middle of the lower end of the bolt body (4); A quick draw-and-close mechanism (7): arranged at the upper end of the interior of the prefabricated box (1); Buffer mechanism (8): It is arranged at the lower end of the interior of the prefabricated box (1), and the upper end of the buffer mechanism (8) is installed in cooperation with the bottom end of the mounting block (3).

2. The underground fire hydrant according to claim 1, characterized in that: The quick-drawing mechanism (7) comprises a slide groove (71), a stabilizing block (72) and a spring (73); the slide groove (71) is respectively arranged at the upper ends of the left and right inner walls of the prefabricated box (1); the stabilizing blocks (72) are slidably connected to the inside of the slide groove (71); the outer ends of the stabilizing blocks (72) are respectively mounted in cooperation with the left and right sides of the mounting block (3); and a spring (73) is arranged between the inner end of the stabilizing block (72) and the inner wall of the slide groove (71).

3. The underground fire hydrant according to claim 2, characterized in that: The quick-drawing mechanism (7) also includes a second slide groove (74), a locking block (75) and a second spring (76). The second slide groove (74) is arranged at the upper end of the rear side wall of the prefabricated box (1). The locking block (75) is slidably connected to the inside of the second slide groove (74). The outer end of the locking block (75) is matched with the rear side of the mounting block (3) for mounting. A second spring (76) is arranged between the inner end of the locking block (75) and the inner wall of the second slide groove (74).

4. The underground fire hydrant according to claim 3, characterized in that: The quick-drawing mechanism (7) further comprises a sliding handle (77) and a sliding handle groove (78), wherein the sliding handle groove (78) is arranged at the middle part of the upper rear side of the prefabricated box (1), the sliding handle groove (78) is connected to the second sliding groove (74), the sliding handle (77) is slidably connected to the inside of the sliding handle groove (78), and the lower end of the sliding handle (77) is fixedly connected to the upper rear side of the locking block (75).

5. The underground fire hydrant according to claim 1, characterized in that: The buffer mechanism (8) comprises a bottom bracket (81), a sliding hole (82), a sliding column (83), a top plate (84) and a buffer spring (85); the bottom bracket (81) is respectively fixedly connected to the lower ends of the left and right inner walls of the prefabricated box (1); the bottom bracket (81) is provided with a sliding hole (82); the sliding column (83) is slidably connected to the inside of the sliding hole (82); the top plate (84) is fixedly connected to the upper end of the sliding column (83); the upper end of the top plate (84) is in contact with the bottom end of the mounting block (3); a buffer spring (85) is provided between the lower end of the top plate (84) and the upper end of the bottom bracket (81); and the buffer spring (85) is sleeved on the outer surface of the sliding column (83).

6. The underground fire hydrant according to claim 1, characterized in that: A avoidance opening (10) is provided in the middle of the front end of the prefabricated box (1), and the avoidance opening (10) is longitudinally adjacent to the water inlet (6).

7. The underground fire hydrant according to claim 1, characterized in that: The prefabricated box (1) is a structure with four sides inclined downward toward the middle.

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