Fire hydrant box fixing device

Abstract

The utility model relates to a fire hydrant cabinet fixing device which comprises a hinge frame, the outer side of the top end of the hinge frame is rotationally connected with left and right opposite mounting plates, first sliding grooves are formed in the inner sides of the middle ends of the mounting plates, the outer side of the bottom end of the hinge frame is rotationally connected with left and right symmetrical bolts, and the bolts are in sliding connection with the first sliding grooves. The outer wall of the front end of the mounting plate is provided with quick release assemblies which are symmetrical up and down, and the front end of the mounting plate is provided with a box body assembly; according to the fire hydrant box fixing device provided by the utility model, the upper and lower opposite gallows are arranged between the mounting plates on the two sides, so that the positions of the mounting plates on the two sides can be adjusted, fire hydrant boxes with different sizes can be mounted, and meanwhile, the box body assembly capable of adjusting the width is matched, so that equipment can be suitable for various environments; the applicability of the equipment is greatly improved, and subsequent maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire hydrant devices, and particularly relates to a fixing device for a fire hydrant box. Background Art

[0002] The design of the fixing device for the fire hydrant box is crucial because it ensures the stable installation of the fire hydrant box in various environments, guaranteeing the stability and effectiveness of the fire protection system. These devices must meet the requirements of stability, safety, flexibility, and easy maintenance to adapt to different sizes and types of fire hydrant boxes. Modern fixing devices enhance the convenience of installation and maintenance, reduce operating costs, and improve system compatibility by adopting modular design and quick disassembly and assembly functions. This continuous progress in design not only improves the usage efficiency of fire protection equipment but also ensures reliability and response speed in case of emergencies.

[0003] After retrieval, the existing patent (Publication No.: CN219043078U) discloses a fixing device for an indoor fire hydrant, which includes a plugging plate and an extrusion cylinder. In the fire hydrant hole, moisture-proof plates are arranged around the side surface of the fire hydrant box body; the plugging plate is arranged on the back of the fire hydrant box body, and an elastic pad is arranged on the side surface of the plugging plate facing the fire hydrant box body along the outer edge of the four sides of the plugging plate; there are four extrusion cylinders, which are respectively arranged at the four corner positions of the plugging plate; the extrusion cylinders are horizontally arranged between the fire hydrant box body and the plugging plate, and the end of the extrusion cylinder close to the plugging plate is fixedly connected to the plugging plate; an abutting plate is arranged at the end of the extrusion cylinder away from the plugging plate, and the abutting plate contacts the moisture-proof plate on the back of the fire hydrant box body to solve the moisture-proof problem on the back of the indoor fire hydrant box body.

[0004] However, in the actual use process of the above scheme, it is only applicable to fire hydrant boxes of specific sizes, which leads to limited applicability of the fixing device, difficulties in maintenance and replacement, poor installation flexibility, standardization problems, and resource waste. First of all, fixing devices of specific sizes can only be used for fire hydrant boxes of specific sizes, restricting the flexibility of the system. If the fire hydrant box is replaced or its size is adjusted, the fixing device needs to be redesigned or replaced. Secondly, during maintenance or replacement, fixing devices of specific sizes may cause inconvenience and increase the replacement cost. In terms of installation, fixing devices of specific sizes may affect the installation flexibility, especially in cases where space is limited. In addition, specific-size devices may lead to market standardization problems, increasing the complexity of production and procurement. Finally, over-designed fixing devices may cause resource waste and increase inventory management costs. Therefore, when choosing a fixing device, it is usually a better option to consider generality and adaptability.

[0005] Therefore, the utility model provides a fixing device for a fire hydrant box. Content of the Utility Model

[0006] In order to make up for the deficiencies of the prior art and solve the problem of only being applicable to fire hydrant boxes of specific sizes, which leads to limited applicability of the fixing device, difficulties in maintenance and replacement, poor installation flexibility, standardization problems, and waste of resources, a fixing device for a fire hydrant box proposed by the present utility model.

[0007] The technical solution adopted by the present utility model to solve its technical problems is: A fixing device for a fire hydrant box described in the present utility model includes a gallows. The outer sides of the top ends of the gallows are rotatably connected with left and right opposite mounting plates. The inner sides of the mid - ends of the mounting plates are provided with first chutes. The outer sides of the bottom ends of the gallows are rotatably connected with left and right symmetric bolts. The bolts are slidably connected with the first chutes. The front outer walls of the mounting plates are provided with upper and lower symmetric quick - release components. The front ends of the mounting plates are provided with a box body component.

[0008] The box body component includes a main box. The front end of the left mounting plate is provided with a main box. The inner sides of the bottom ends of the main box are provided with front and rear symmetric second chutes. The second chutes are slidably connected with sliders. The inner sides of the sliders are fixedly connected with a sub - box. The sub - box is slidably connected with the main box. The inner side of the bottom end of the main box is provided with a third chute. The third chute is slidably connected with a sealing plate. The sealing plate is fixedly connected with the sub - box.

[0009] The quick - release component includes engaging columns. The front outer walls of the mounting plates are fixedly connected with upper and lower symmetric engaging columns. The outer sides of the mid - ends of the engaging columns are provided with card slots. The engaging columns are slidably connected with limiting sleeves. Springs are arranged on the outer sides of the mid - ends of the limiting sleeves. The inner sides of the mid - ends of the limiting sleeves are slidably connected with evenly distributed engaging balls. The limiting sleeves are slidably connected with rotating sleeves. The front outer sides of the rotating sleeves are fixedly connected with evenly distributed engaging blocks. An extended chamber is provided at the inner end of the rear side of the rotating sleeve. A limiting ring is fixedly connected with the inner side of the mid - end of the rotating sleeve. The front end of the limiting ring is fixedly connected with the rear end of the spring.

[0010] The outer ends of the rear sides of the engaging columns are fixedly connected with threaded sleeves. The threaded sleeves are threadedly connected with the rotating sleeves.

[0011] The left part of the inner front end of the main box is rotatably connected with a main door. The right part of the front outer wall of the main door is fixedly connected with a handle. The left side of the rear end of the main box is provided with upper and lower symmetric second mounting holes. The second mounting holes are snap - fitted with the left rotating sleeve.

[0012] The front right part of the inner side of the sub - box is rotatably connected with a sub - door. The right side of the rear end of the sub - box is provided with upper and lower symmetric first mounting holes. The first mounting holes are snap - fitted with the right rotating sleeve.

[0013] A fire hydrant is fixedly connected with the inner side of the bottom end of the main box.

[0014] The outer wall of the auxiliary box is provided with a rubber layer.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The fire hydrant box fixing device described in the utility model can adjust the positions of the mounting plates on both sides by setting up upper and lower opposite gallows in the middle of the mounting plates on both sides, and can install fire hydrant boxes of different sizes. At the same time, it is equipped with a box assembly with adjustable width, so that the equipment can be used in a variety of environments, which greatly improves the applicability of the equipment and facilitates subsequent maintenance and replacement.

[0017] 2. The fire hydrant box fixing device described in the utility model rotates the rotating sleeve, so that the internal thread on the inside of the rotating sleeve cooperates with the external thread on the outside of the threaded sleeve, thereby driving the rotating sleeve, the limit ring, and the range extension chamber to move forward and backward. By controlling the engagement of the limit ring with the snap ball, the engagement of the snap ball with the slot is controlled to achieve rapid disassembly between the snap block and the snap column, so as to quickly disassemble and assemble the mounting plate and the box assembly. First, it simplifies the maintenance and overhaul process, making rapid disassembly and reinstallation more convenient and reducing equipment downtime. Secondly, this design improves the flexibility of the system and supports temporary configuration and adjustment to adapt to different application scenarios. In addition, it reduces labor and maintenance costs while improving safety because it can respond quickly and keep the system effective in an emergency. Finally, the design of rapid disassembly and assembly promotes standardization and compatibility, making system maintenance more efficient and economical.

[0018] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation method and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0020] In the drawings of the specification:

[0021] Figure 1 It is a three-dimensional structure diagram of the utility model. Figure 1 ;

[0022] Figure 2 It is a three-dimensional structure diagram of the utility model. Figure 2 ;

[0023] Figure 3 is a schematic diagram of the three-dimensional structure in the present utility model Figure 3 ;

[0024] Figure 4 is a schematic diagram of the sectional structure at the main box in the present utility model Figure 1 ;

[0025] Figure 5 is a schematic diagram of the sectional structure at the main box in the present utility model Figure 2 ;

[0026] Figure 6 is a schematic diagram of the sectional structure at the main box in the present utility model Figure 3 ;

[0027] Figure 7 is a schematic diagram of the partial three-dimensional structure at the mounting plate in the present utility model;

[0028] Figure 8 is a schematic diagram of the sectional structure at the limiting sleeve in the present utility model.

[0029] The reference numerals involved in the above-mentioned various drawings are explained as follows:

[0030] 1, main box; 11, sub-box; 12, main door; 13, handle; 14, sub-door; 15, fire hydrant; 16, first mounting hole; 17, second mounting hole; 2, limiting sleeve; 21, rotating sleeve; 22, engaging block; 23, limiting ring; 24, range extension chamber; 25, spring; 26, engaging column; 27, card slot; 28, threaded sleeve; 29, engaging ball; 3, mounting plate; 31, first chute; 32, bolt; 33, gallows; 4, second chute; 41, slider; 42, third chute; 43, sealing plate. Detailed implementation manners

[0031] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, the following is a detailed description in conjunction with the listed specific embodiments and with reference to the drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.

[0032] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form the corresponding implementable technical solutions.

[0033] Unless otherwise defined, the meanings of technical terms used herein are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0034] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, X and / or Y means: there is X, there is Y, and there is both X and Y at the same time. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.

[0035] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary or order relationship, etc. between these entities or operations.

[0036] Without further limitation, in this application, the terms "comprising", "including", "having" or other similar expressions used in the statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method or product including the said elements, so that the process, method or product including a series of elements may not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to this process, method or product.

[0037] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the recited number; expressions such as "above", "below", "within" are understood to include the recited number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "multiple", such as "multiple groups", "multiple times", etc., are understood in this way unless otherwise specifically defined.

[0038] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawings, and is only for the convenience of describing the specific embodiments of this application or facilitating the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of this application.

[0039] Unless otherwise clearly specified or defined, in the description of the embodiments of the present application, terms such as "installation", "connection", "linkage", "fixation", and "setting" should be understood in a broad sense. For example, the "connection" may be a fixed connection, a detachable connection, or an integral setting; it may be a mechanical connection, an electrical connection, or a communication connection; it may be a direct connection or an indirect connection through an intermediate medium; it may be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0040] Embodiment 1:

[0041] As Figures 1 to 8 shown, a fixing device for a fire hydrant box according to the present utility model includes a gallows 33. The outer sides of the top ends of the gallows 33 are rotatably connected with left and right opposite mounting plates 3. The left and right symmetric mounting plates 3 are connected by the upper and lower symmetric gallows 33. The inner sides of the mid - ends of the mounting plates 3 are provided with first chutes 31. The outer sides of the bottom ends of the gallows 33 are rotatably connected with left and right symmetric bolts 32. The bolts 32 are limited by the first chutes 31. The bolts 32 are slidably connected with the first chutes 31. The gallows 33 and the mounting plates 3 can be fixed through the bolts 32, and the telescopic length of the gallows 33 can be fixed. The front outer walls of the mounting plates 3 are provided with upper and lower symmetric quick - release components, and the front ends of the mounting plates 3 are provided with a box body component.

[0042] The box body component includes a main box 1. The main box 1 is arranged at the front end of the left mounting plate 3. The inner side of the bottom end of the main box 1 is provided with front - and - rear symmetric second chutes 4. The second chutes 4 are slidably connected with sliders 41. The sliders 41 are limited by the second chutes 4. The inner sides of the sliders 41 are fixedly connected with auxiliary boxes 11. The sliders 41 are fixed by the auxiliary boxes 11. The auxiliary boxes 11 are slidably connected with the main box 1. The auxiliary boxes 11 can be retracted by the main box 1. While facilitating transportation, the overall width of the box body component can also be adjusted according to needs during actual use. The inner side of the bottom end of the main box 1 is provided with a third chute 42. The third chute 42 is slidably connected with a sealing plate 43. The sealing plate 43 can be retracted through the third chute 42, and the groove at the bottom end of the auxiliary box 11 can be sealed by the sealing plate 43. The sealing plate 43 is fixedly connected with the auxiliary box 11, and the sealing plate 43 is fixed by the auxiliary box 11.

[0043] The quick-release component includes a clamping post 26. Symmetric clamping posts 26 are fixedly connected to the outer wall of the front end of the mounting plate 3. The clamping post 26 is fixed by the mounting plate 3. A clamping groove 27 is provided on the outer side of the middle end of the clamping post 26. A limiting sleeve 2 is slidably connected to the outside of the clamping post 26. The limiting sleeve 2 is limited by the clamping post 26. A spring 25 is provided on the outer side of the middle end of the limiting sleeve 2. The front end of the spring 25 is fixed by a groove on the outer side of the limiting sleeve 2. A uniformly distributed clamping ball 29 is slidably connected to the inner side of the middle end of the limiting sleeve 2. The clamping ball 29 is limited by the limiting sleeve 2 so that the clamping ball 29 slides inside the limiting sleeve 2. At the same time, both ends of the opening position where the limiting sleeve 2 contacts the clamping ball 29 are closed, so that the clamping ball 29 can slide freely in the opening but will not fall out. A rotating sleeve 21 is slidably connected to the outside of the limiting sleeve 2. The rotating sleeve 21 is limited by the limiting sleeve 2. Uniformly distributed clamping blocks 22 are fixedly connected to the outer side of the front end of the rotating sleeve 21. The clamping blocks 22 are fixed by the rotating sleeve 21. An extension chamber 24 is provided at the inner end of the rear side of the rotating sleeve 21. By providing the extension chamber 24, a moving space can be left for the clamping ball 29. A limiting ring 23 is fixedly connected to the inner side of the middle end of the rotating sleeve 21. The limiting ring 23 is fixed by the rotating sleeve 21. The front and back movement of the rotating sleeve 21 drives the limiting ring 23 to move synchronously. When the limiting ring 23 and the clamping ball 29 are in the same vertical position, the clamping ball 29 can be supported to prevent the clamping ball 29 from moving outwards, so that the clamping ball 29 is engaged with the clamping groove 27, thereby fixing the positions of the limiting sleeve 2 and the clamping post 26. The front end of the limiting ring 23 is fixedly connected to the rear end of the spring 25. The spring 25 is pushed backward with the limiting sleeve 2 as the stress point by the spring 25.

[0044] A threaded sleeve 28 is fixedly connected to the outer end of the rear side of the clamping post 26. The threaded sleeve 28 is fixed by the clamping post 26. The threaded sleeve 28 is threadedly connected to the rotating sleeve 21. The internal thread inside the rear end of the rotating sleeve 21 and the external thread on the outside of the threaded sleeve 28 cooperate with each other to fix the rotating sleeve 21 and the threaded sleeve 28.

[0045] A main door 12 is rotatably connected to the left part of the inner side of the front end of the main box 1. The main box 1 is closed by the main door 12. A handle 13 is fixedly connected to the right part of the outer wall of the front end of the main door 12. The handle 13 is fixed by the main door 12. Second mounting holes 17 are provided symmetrically up and down on the left side of the rear end of the main box 1. The second mounting holes 17 are engaged with the left rotating sleeve 21. The clamping block 22 on the outside of the rotating sleeve 21 is engaged with the second mounting hole 17, so that after the clamping groove 27 and the clamping ball 29 are engaged and fixed, the rotating sleeve 21 cannot move, thereby fixedly connecting the main box 1 and the left mounting plate 3.

[0046] At the front part of the right end inside the auxiliary box 11, there is an auxiliary door 14 rotatably connected. The auxiliary box 11 limits the auxiliary door 14. On the right side of the rear end of the auxiliary box 11, there are symmetrically arranged first mounting holes 16 up and down. The first mounting holes 16 are engaged with the right-side rotating sleeve 21. The engaging block 22 on the outside of the rotating sleeve 21 is engaged with the outside of the first mounting hole 16, so as to fix the auxiliary box 11 and the right-side mounting plate 3. The inner diameters of the first mounting hole 16 and the second mounting hole 17 are the same as the outer diameter of the rotating sleeve 21, so that the rotating sleeve 21 can slide freely in the first mounting hole 16 and the second mounting hole 17, but the engaging block 22 cannot enter the first mounting hole 16 and the second mounting hole 17.

[0047] At the inner bottom end of the main box 1, there is a fire hydrant 15 fixedly connected. The main box 1 fixes the fire hydrant 15.

[0048] The outer wall of the auxiliary box 11 is provided with a rubber layer. By arranging the rubber layer on the outside of the auxiliary box 11, after the equipment is installed, the rubber layer can seal between the main box 1 and the auxiliary box 11, and at the same time, it can also play a role in shock absorption between the main box 1 and the auxiliary box 11, reducing the influence of external vibration on the equipment itself.

[0049] Working principle: When installing the fixed device of the fire hydrant box, first rotate the bolt 32 to cancel the fixation between the mounting plate 3 and the gallows 33. Then, first install the left mounting plate 3 at the required position, and then pull the right mounting plate 3 to extend the gallows 33 to adjust the relative position of the left and right mounting plates 3. After the position adjustment is completed, rotate the bolts 32 on both sides to fix between the gallows 33 and the mounting plate 3, so as to fix the position between the two mounting plates 3. Then, pull out the auxiliary box 11 from the main box 1, adjust the distance between the first mounting hole 16 and the second mounting hole 17 to make the distance between them the same as the horizontal distance between the engaging columns 26 at the front ends of the two mounting plates 3. Then, install the box body assembly onto the engaging column 26 through the first mounting hole 16 and the second mounting hole 17. Then, pull the rotating sleeve 21 forward, and drive the limiting ring 23 and the range extender chamber 24 to move forward synchronously through the rotating sleeve 21, canceling the support of the limiting ring 23 for the engaging ball 29, so that the engaging ball 29 can move within the limiting sleeve 2. Then, put the limiting sleeve 2 on the outside of the engaging column 26 and push the limiting sleeve 2 backward to make the limiting sleeve 2 contact the inner wall of the threaded sleeve 28. Then, release the rotating sleeve 21 and rotate the rotating sleeve 21. Through the cooperation of the internal thread on the inner side of the rear end of the rotating sleeve 21 and the external thread on the outside of the threaded sleeve 28, pull the rotating sleeve 21 backward, and drive the limiting ring 23 and the range extender chamber 24 to move backward synchronously through the rotating sleeve 21. During the movement of the limiting ring 23, the engaging ball 29 is squeezed, forcing the engaging ball 29 to move inward simultaneously and engage with the card slot 27, so as to fix between the engaging column 26, the limiting sleeve 2 and the rotating sleeve 21. And the box body assembly is engaged through the engaging block 22 on the outside of the rotating sleeve 21, so as to realize the fixation between the mounting plate 3 and the box body and complete the installation.

[0050] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A fixed device for a fire hydrant box, characterized in that, It includes a gallows. There are relatively left and right mounting plates rotatably connected to the outer side of the top end of the gallows. A first chute is provided on the inner side of the middle end of the mounting plate. There are symmetrically left and right bolts rotatably connected to the outer side of the bottom end of the gallows. The bolts are slidably connected to the first chute. There are symmetrically up and down quick-release components provided on the front outer wall of the mounting plate, and a box body component is provided at the front end of the mounting plate.

2. The fixed device for a fire hydrant box according to claim 1, characterized in that, The box body component includes a main box. The main box is provided at the front end of the left mounting plate. Second chutes symmetrically front and back are provided on the inner side of the bottom end of the main box. Sliders are slidably connected to the inner side of the second chutes. A sub-box is fixedly connected to the inner side of the sliders. The sub-box is slidably connected to the main box. A third chute is provided in the inner side of the bottom end of the main box. A sealing plate is slidably connected to the inner side of the third chute. The sealing plate is fixedly connected to the sub-box.

3. The fixed device for a fire hydrant box according to claim 2, characterized in that, The quick-release component includes engaging columns. Engaging columns symmetrically up and down are fixedly connected to the front outer wall of the mounting plate. A card slot is provided on the outer side of the middle end of the engaging column. A limiting sleeve is slidably connected to the outer side of the engaging column. A spring is provided on the outer side of the middle end of the limiting sleeve. Evenly distributed engaging balls are slidably connected to the inner side of the middle end of the limiting sleeve. A rotating sleeve is slidably connected to the outer side of the limiting sleeve. Evenly distributed engaging blocks are fixedly connected to the outer side of the front end of the rotating sleeve. An extension chamber is provided at the inner end of the rear side of the rotating sleeve. A limiting ring is fixedly connected to the inner side of the middle end of the rotating sleeve. The front end of the limiting ring is fixedly connected to the rear end of the spring.

4. The fixing device for a fire hydrant box according to claim 3, wherein, A threaded sleeve is fixedly connected to the outer end of the rear side of the engaging column. The threaded sleeve is threadedly connected to the rotating sleeve.

5. The fixing device for a fire hydrant box according to claim 4, characterized in that, A main door is rotatably connected to the left part of the inner side of the front end of the main box. A handle is fixedly connected to the right part of the front outer wall of the main door. Second mounting holes symmetrically up and down are provided on the left side of the rear end of the main box. The second mounting holes are engaged and connected with the left rotating sleeve.

6. The fixed device for a fire hydrant box according to claim 5, characterized in that A sub-door is rotatably connected to the front part of the right end of the inner side of the sub-box. First mounting holes symmetrically up and down are provided on the right side of the rear end of the sub-box. The first mounting holes are engaged and connected with the right rotating sleeve.

7. A fire hydrant box fixing device according to claim 6, characterized in that, A fire hydrant is fixedly connected to the inner side of the bottom end of the main box.

8. The fixing device for a fire hydrant box according to claim 2, wherein, A rubber layer is provided on the outer wall of the sub-box.

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