Kiln well assembly for signal installation

Abstract

The utility model discloses a kiln well assembly for a signal facility, which belongs to the technical field of kiln well structures for signal facilities, and comprises a concrete foundation, a first pipe fitting and a second pipe fitting which are accommodated in a pit hole and abut against the top of the concrete foundation; a pouring space is defined between the first pipe fitting and the second pipe fitting, and the pouring space is used for pouring concrete; one end of the communicating pipe is suitable for being communicated with an installation space in the signal facility, the other end of the communicating pipe sequentially penetrates through the second pipe fitting and the first pipe fitting and extends into the first pipe fitting, and the communicating pipe is suitable for containing a cable. According to the kiln well assembly for the signal facility, the construction of the kiln well assembly is simpler and quicker, the construction efficiency of the kiln well assembly is improved, meanwhile, after the concrete in the pouring space is solidified, the first pipe fitting, the second pipe fitting and the concrete in the pouring space can form a whole, the structural strength of the kiln well assembly is guaranteed, and the construction cost is reduced. And the service life of the kiln well assembly is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of kiln structure for signal facilities, and specifically relates to kiln components for signal facilities. Background Technology

[0002] In related technologies, the management and protection of cables for signal facilities (such as traffic lights and communication base stations) is an important aspect of modern urban infrastructure construction. Traditional cable management methods usually involve digging trenches underground and burying the cables directly in the trenches, or using simple plastic pipes for protection. In existing technologies, manholes are set up near signal facilities to facilitate the laying and organization of cables. However, manholes are made of masonry blocks and concrete, resulting in low structural strength and low construction efficiency. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a kiln assembly for signal facilities.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model provides a pit assembly for signal facilities, comprising: a concrete foundation disposed at the bottom of the pit; a first pipe fitting housed within the pit and abutting against the top of the concrete foundation; a second pipe fitting housed within the pit and abutting against the top of the concrete foundation, the second pipe fitting having a larger diameter than the first pipe fitting, and defining a pouring space between the first and second pipe fittings for pouring concrete; and a connecting pipe, one end of which is adapted to communicate with an installation space within the signal facility, the other end of which passes sequentially through the second and first pipe fittings and extends into the first pipe fitting, the connecting pipe being adapted to house a cable.

[0006] According to the present invention, the kiln assembly for signal facilities, by setting a first pipe and a second pipe, and forming a pouring space between the first pipe and the second pipe for pouring concrete, makes the construction of the kiln assembly simpler and faster, improves the construction efficiency of the kiln assembly, and after the concrete in the pouring space solidifies, the concrete can connect the first pipe and the second pipe, so that the first pipe, the second pipe and the concrete in the pouring space form a whole, ensuring the structural strength of the kiln assembly, making the kiln assembly more resistant to shear, avoiding deformation of the kiln assembly, and extending the service life of the kiln assembly.

[0007] Furthermore, the top of the concrete foundation is provided with an annular first receiving groove and a second receiving groove, the first receiving groove being adapted to receive at least a portion of the first pipe fitting, and the second receiving groove being adapted to receive at least a portion of the second pipe fitting.

[0008] Furthermore, the first pipe fitting has a first connecting port that extends radially through its wall, and the second pipe fitting has a second connecting port that is directly opposite the first connecting port. Both the first and second connecting ports are suitable for the connecting pipe to pass through, and the inner peripheral wall of the first connecting port abuts against the outer peripheral wall of the connecting pipe.

[0009] Furthermore, the first pipe fitting includes: a base pipe fitting, the bottom of which is adapted to abut against the top of the concrete foundation, and the top of which is provided with a first snap-fit ​​protrusion; and a connecting pipe fitting, the bottom of which is provided with a second snap-fit ​​groove, the first snap-fit ​​protrusion being received in the second snap-fit ​​groove to connect the base pipe fitting and the connecting pipe fitting, the top of which is provided with a second snap-fit ​​protrusion, and the second snap-fit ​​protrusion of one connecting pipe fitting being received in the second snap-fit ​​groove of an adjacent connecting pipe fitting to connect the two adjacent connecting pipe fittings.

[0010] Furthermore, it also includes: a concrete jacking pipe, the bottom of which is provided with a third snap-fit ​​groove, and the second snap-fit ​​protrusion of the connecting pipe at the top is received in the third snap-fit ​​groove to connect the connecting pipe at the top to the concrete jacking pipe.

[0011] Furthermore, the concrete jacking pipe includes: a connecting portion, the bottom of which is provided with the third snap-fit ​​groove; an extension portion, which surrounds the outer periphery of the top of the connecting portion, and defines a receiving groove between the extension portion and the connecting portion; wherein the kiln well assembly further includes: a concrete sealing plate, which is received in the receiving groove.

[0012] Furthermore, the wall thickness of the first pipe fitting is d1, and the wall thickness of the second pipe fitting is d2, satisfying that d2 < d1.

[0013] Furthermore, there is a filling gap between the second pipe wall and the pit, and the filling gap is suitable for pouring concrete.

[0014] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0016] Figure 1 This is a cross-sectional view of the kiln well assembly of this utility model;

[0017] Figure 2 for Figure 1 A magnified view of A in the center circle;

[0018] Figure 3 This is a structural schematic diagram of the connecting pipe fitting of this utility model.

[0019] The following labels are shown in the attached diagram:

[0020] 1. Kiln well components;

[0021] 10. Concrete foundation;

[0022] 20. First pipe fitting; 21. Basic pipe fitting; 22. Connecting pipe fitting; 221. Second snap-fit ​​groove; 222. Second snap-fit ​​protrusion;

[0023] 30. Second fitting; 40. Connecting pipe;

[0024] 50. Concrete jacking pipe; 51. Connecting part; 52. Extension part;

[0025] 60. Concrete sealing slab. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0027] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other instances, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the present invention.

[0028] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0030] Example 1:

[0031] like Figures 1-3 As shown, this utility model provides a kiln assembly 1 for signal facilities, including: a concrete foundation 10, a first pipe fitting 20, a second pipe fitting 30, and a connecting pipe 40. The concrete foundation 10 is disposed at the bottom of the pit. The first pipe fitting 20 is housed in the pit and abuts against the top of the concrete foundation 10. The second pipe fitting 30 is housed in the pit and abuts against the top of the concrete foundation 10. The diameter of the second pipe fitting 30 is larger than the diameter of the first pipe fitting 20, and a pouring space is defined between the first pipe fitting 20 and the second pipe fitting 30. The pouring space is used for pouring concrete. One end of the connecting pipe 40 is adapted to communicate with the installation space in the signal facility. The other end of the connecting pipe 40 passes through the second pipe fitting 30 and the first pipe fitting 20 in sequence and extends into the first pipe fitting 20. The connecting pipe 40 is adapted to house cables.

[0032] In some embodiments, the concrete foundation 10 is the foundation of the kiln assembly 1. The concrete foundation 10 is located at the bottom of the pit below the ground and serves to support the entire kiln assembly 1. The first pipe 20 is installed above the concrete foundation 10 and is located inside the pit. The first pipe 20 is used to provide a receiving space to accommodate other components. The second pipe 30 is also installed above the concrete foundation 10, but the diameter of the second pipe 30 is larger than that of the first pipe 20. That is, the second pipe 30 is arranged around the outer periphery of the first pipe 20. A pouring space is formed between the first pipe 20 and the second pipe 30. The pouring space is used to pour concrete to increase the stability and strength of the kiln assembly 1. One end of the connecting pipe 40 is connected to the installation space inside the signal facility. The other end of the connecting pipe 40 passes through the second pipe 30 and the first pipe 20 and finally reaches the interior of the first pipe 20. The connecting pipe 40 is used to accommodate cables so that the cables can be safely introduced underground from the signal facility on the ground and avoid damage to the cables from the external environment.

[0033] Understandably, by pouring concrete between the first fitting 20 and the second fitting 30, the overall stability of the kiln assembly 1 can be greatly enhanced, preventing displacement or damage to the kiln assembly 1 due to external pressure. The design of the connecting pipe 40 allows the cable to be transmitted in a protected environment, avoiding the risks of direct exposure to the natural environment, such as water erosion and animal bites. Moreover, if cable maintenance or replacement is required, the connecting pipe 40 and the cable can be easily accessed by opening the concrete sealing plate 60 without the need for extensive ground excavation.

[0034] Therefore, by placing the cable inside the connecting pipe 40 and within the protective structure consisting of the first fitting 20 and the second fitting 30, the risk of cable damage is greatly reduced, the operational safety of the signal facility is improved, and the service life of the cable and the well assembly 1 itself is extended, reducing maintenance costs.

[0035] It is worth mentioning that the well assembly 1 of this application is applicable to various types of signal facilities, whether it is traffic lights, communication base stations or other public facilities. The size and layout of the well assembly 1 can be adjusted according to the actual situation to meet different needs.

[0036] According to the present invention, the kiln assembly 1 for signal facilities is constructed by setting a first pipe fitting 20 and a second pipe fitting 30, and forming a pouring space for pouring concrete between the first pipe fitting 20 and the second pipe fitting 30. This makes the construction of the kiln assembly 1 simpler and faster, improves the construction efficiency of the kiln assembly 1, and after the concrete in the pouring space solidifies, the concrete can connect the first pipe fitting 20 and the second pipe fitting 30, so that the first pipe fitting 20, the second pipe fitting 30 and the concrete in the pouring space form a whole, ensuring the structural strength of the kiln assembly 1, making the kiln assembly 1 more resistant to shear, avoiding deformation of the kiln assembly 1, and extending the service life of the kiln assembly 1.

[0037] Example 2:

[0038] Based on Embodiment 1, this embodiment provides an annular first receiving groove and a second receiving groove on the top of the concrete foundation 10. The first receiving groove is adapted to at least a portion of the first pipe fitting 20, and the second receiving groove is adapted to receive at least a portion of the second pipe fitting 30.

[0039] In some embodiments, an annular first receiving groove is provided on the top of the concrete foundation 10. The first receiving groove is used to receive at least a portion of the first pipe fitting 20, that is, a portion of the bottom of the first pipe fitting 20 can be embedded in the first receiving groove, thereby ensuring that the position of the first pipe fitting 20 is more accurate and stable during installation. Similarly, an annular second receiving groove is provided on the top of the concrete foundation 10. The second receiving groove is used to receive at least a portion of the second pipe fitting 30, that is, a portion of the bottom of the second pipe fitting 30 can be embedded in the second receiving groove, ensuring that the position of the second pipe fitting 30 is accurate and stable.

[0040] It is understandable that by setting the first and second receiving grooves on the top of the concrete foundation 10, the first pipe fitting 20 and the second pipe fitting 30 can be accurately positioned during installation, avoiding displacement of the first pipe fitting 20 and the second pipe fitting 30 during concrete pouring. This not only improves the installation accuracy of the kiln well assembly 1, but also enhances the overall structural stability of the kiln well assembly 1. Moreover, the design of the first and second receiving grooves reduces the gap between the first pipe fitting 20 and the second pipe fitting 30 and the concrete foundation 10, allowing the poured concrete to better fill these spaces, further enhancing the integrity and airtightness of the kiln well assembly 1 structure.

[0041] Therefore, the design of the receiving groove ensures that the first pipe fitting 20 and the second pipe fitting 30 can be precisely aligned during installation, reducing the need for manual adjustment and improving the installation efficiency of the kiln well assembly 1. Moreover, by reducing the gap between the first pipe fitting 20 and the second pipe fitting 30 and the concrete foundation 10, the poured concrete can be distributed more evenly, enhancing the overall structural rigidity and compressive strength of the kiln well assembly 1. Of course, the design of the first and second receiving grooves reduces potential seepage paths, improves the waterproof performance of the kiln well assembly 1, and extends the service life of the kiln well assembly 1. At the same time, the design of the first and second receiving grooves makes the installation process of the kiln well assembly 1 simpler and more intuitive, reducing construction difficulty and shortening construction time.

[0042] According to some embodiments of the present invention, the first pipe fitting 20 has a first connecting port that extends radially through its pipe wall, and the second pipe fitting 30 has a second connecting port that is directly opposite to the first connecting port. Both the first and second connecting ports are suitable for the connecting pipe 40 to pass through, and the inner peripheral wall of the first connecting port abuts against the outer peripheral wall of the connecting pipe 40.

[0043] In some embodiments, during installation, after the first pipe fitting 20 and the second pipe fitting 30 are installed, the first connection port of the first pipe fitting 20 and the second connection port of the second pipe fitting 30 are aligned radially. Then, the other end of the connecting pipe 40 is passed through the second connection port and the first connection port in sequence. Then, concrete is poured into the pouring space. In this way, the connecting pipe 40, the first pipe fitting 20, the second pipe fitting 30 and the concrete foundation 10 are formed into a whole by the poured concrete, which ensures the structural stability of the kiln well assembly 1.

[0044] It is worth mentioning that by setting corresponding connection ports on the first pipe fitting 20 and the second pipe fitting 30, it is ensured that the connecting pipe 40 can pass smoothly through the first pipe fitting 20 and the second pipe fitting 30, thereby realizing the connection from the ground signal facility to the underground cable. Moreover, the inner peripheral wall of the first connection port abuts against the outer peripheral wall of the connecting pipe 40 to reduce or prevent moisture and other impurities from entering the first pipe fitting 20, thereby improving the sealing and reliability of the kiln well assembly 1. At the same time, the design of the first connection port and the second connection port not only provides a channel for the connecting pipe 40, but also plays a role in positioning and fixing the connecting pipe 40, ensuring that the connecting pipe 40 will not shift during the installation process.

[0045] Example 3:

[0046] Based on Embodiment 1, the first pipe fitting 20 includes a base pipe fitting 21 and a connecting pipe fitting 22. The bottom of the base pipe fitting 21 is adapted to abut against the top of the concrete foundation 10. The top of the base pipe fitting 21 is provided with a first snap-fit ​​protrusion. The bottom of the connecting pipe fitting 22 is provided with a second snap-fit ​​groove 221. The first snap-fit ​​protrusion is received in the second snap-fit ​​groove 221 to connect the base pipe fitting 21 and the connecting pipe fitting 22. The top of the connecting pipe fitting 22 is provided with a second snap-fit ​​protrusion 222. The second snap-fit ​​protrusion 222 of one connecting pipe fitting 22 is received in the second snap-fit ​​groove 221 of another adjacent connecting pipe fitting 22 to connect the two adjacent connecting pipe fittings 22.

[0047] In some embodiments, the bottom of the base pipe 21 abuts against the top of the concrete foundation 10 to ensure stable installation of the base pipe 21. The top of the base pipe 21 is provided with a first snap-fit ​​protrusion, and the bottom of the connecting pipe 22 is provided with a second snap-fit ​​groove 221. The first snap-fit ​​protrusion can be embedded into the second snap-fit ​​groove 221, thereby connecting the base pipe 21 and the connecting pipe 22. The top of the connecting pipe 22 is also provided with a second snap-fit ​​protrusion 222 for connection with the next connecting pipe 22.

[0048] It is understandable that the first pipe fitting 20 consists of a basic pipe fitting 21 and multiple connecting pipe fittings 22. This modular design allows the total length of the first pipe fitting 20 to be flexibly adjusted according to actual needs. The basic pipe fitting 21 and the connecting pipe fittings 22 are connected by a first snap-fit ​​protrusion and a second snap-fit ​​groove 221, which is not only simple and quick, but also firm and reliable. Each connecting pipe fitting 22 has a second snap-fit ​​protrusion 222 on its top, which can be connected to the second snap-fit ​​groove 221 of the next connecting pipe fitting 22, thereby realizing the step-by-step connection of multiple connecting pipe fittings 22 to form a complete pipeline system.

[0049] Therefore, the modular design allows the length of the first pipe fitting 20 to be adjusted according to actual needs, making it suitable for pits of different depths and different application scenarios. Moreover, the snap-fit ​​connection method is simple and quick, reducing complex installation tools and steps and improving installation efficiency. At the same time, the design of the snap-fit ​​protrusion and snap-fit ​​groove ensures the firmness of the connection, maintaining the stability of the first pipe fitting 20 even under external pressure, reducing the risk of loosening or falling off. Of course, if a part needs to be repaired or replaced, it can be easily disassembled and reinstalled without large-scale modifications to the entire kiln assembly 1.

[0050] According to some embodiments of the present invention, the kiln well assembly 1 further includes: a concrete jacking pipe 50, the bottom of which is provided with a third snap-fit ​​groove, and the second snap-fit ​​protrusion 222 of the connecting pipe 22 located at the top end is received in the third snap-fit ​​groove to connect the connecting pipe 22 at the top end to the concrete jacking pipe 50.

[0051] It is understandable that the depth of the pit and the height of the first pipe fitting 20 cannot be exactly the same. Therefore, during installation, the height of the first pipe fitting 20 is lower than the depth of the pit, and the height of the first pipe fitting 20 is supplemented by setting a concrete jacking pipe 50, so that the top of the kiln well assembly 1 is flush with the ground, ensuring the aesthetics of the kiln well assembly 1, and at the same time avoiding the formation of a pit between the kiln well assembly 1 and the ground, thereby avoiding the pit from affecting pedestrians or vehicles.

[0052] According to some embodiments of the present invention, the concrete jacking pipe 50 includes: a connecting part 51 and an extension part 52. The bottom of the connecting part 51 is provided with a third snap-fit ​​groove. The extension part 52 is disposed around the outer periphery of the top of the connecting part 51. A receiving groove is defined between the extension part 52 and the connecting part 51. The kiln well assembly 1 also includes: a concrete sealing plate 60, which is received in the receiving groove.

[0053] In some embodiments, the connecting part 51 is the main body of the concrete jacking pipe 50, the bottom of the connecting part 51 is provided with a third snap-fit ​​groove, the extension part 52 is provided around the outer periphery of the top of the connecting part 51, and a receiving groove is formed between the extension part 52 and the connecting part 51. The concrete sealing plate 60 is a separate component, and the concrete sealing plate 60 can be placed in the receiving groove to seal the top of the concrete jacking pipe 50.

[0054] Understandably, the concrete sealing plate 60 placed in the receiving tank can completely seal the top of the concrete jacking pipe 50, preventing external moisture and debris from entering the kiln well assembly 1, thereby protecting the cable from damage and extending the cable's service life.

[0055] It is worth mentioning that there is a gap L between the outer peripheral wall of the concrete sealing plate 60 and the inner peripheral wall of the receiving groove, which satisfies: 15mm≤L≤25mm. This ensures that the concrete sealing plate 60 can completely seal the concrete jacking pipe 50 while facilitating the removal of the concrete sealing plate 60 from the receiving groove, thereby facilitating the inspection and maintenance of the kiln well components 1 and cables, etc.

[0056] Example 4:

[0057] Based on Embodiment 1, in this embodiment, the wall thickness of the first pipe fitting 20 is d1, and the wall thickness of the second pipe fitting 30 is d2, satisfying that d2 < d1.

[0058] Understandably, the thicker wall of the first fitting 20 allows it to withstand greater external pressure and load, ensuring the safety of the cables inside. The relatively thinner wall of the second fitting 30 reduces the overall weight of the kiln assembly 1 while maintaining the basic structural strength, thus lowering the production cost of the kiln assembly 1.

[0059] Therefore, the thicker wall of the first fitting 20 can withstand greater external pressure and load, ensuring the safety of the internal cables of the first fitting 20 and extending the service life of the cables. Moreover, the above-mentioned design can reduce unnecessary material waste, reduce costs, and ensure the stability and safety of the kiln assembly 1. Of course, the thinner wall of the second fitting 30 can reduce the overall weight, facilitate transportation and installation, and reduce construction difficulty.

[0060] According to some embodiments of the present invention, there is a filling gap between the second pipe wall and the pit, and the filling gap is suitable for pouring concrete.

[0061] Understandably, by pouring concrete into the gap between the second pipe fitting 30 and the pit, the second pipe fitting 30 can be firmly fixed in the pit, enhancing its compressive strength and overall stability, thereby enhancing the compressive strength and overall stability of the kiln well assembly 1. Moreover, pouring concrete can fill the gap between the second pipe fitting 30 and the pit, preventing external moisture and impurities from entering the interior of the kiln well assembly 1, improving the sealing and leak-proof performance of the kiln well assembly 1. At the same time, after the concrete is poured into the gap, it can evenly distribute external pressure, reduce local stress concentration, and further improve the durability of the kiln well assembly 1.

[0062] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A well assembly for signal facilities, wherein the ground surface is provided with a pit for housing the well assembly, characterized in that, The kiln well components include: A concrete foundation is provided at the bottom of the pit; The first pipe fitting is housed within the pit and abuts against the top of the concrete foundation; The second pipe fitting is housed within the pit and abuts against the top of the concrete foundation. The diameter of the second pipe fitting is larger than that of the first pipe fitting, and a pouring space is defined between the first pipe fitting and the second pipe fitting for pouring concrete. A connecting pipe, one end of which is adapted to communicate with an installation space within a signal facility, the other end of which passes sequentially through a second fitting and a first fitting and extends into the first fitting, the connecting pipe being adapted to accommodate a cable.

2. The kiln assembly for signal facilities according to claim 1, characterized in that, The top of the concrete foundation is provided with an annular first receiving groove and a second receiving groove, the first receiving groove being adapted to receive at least a portion of the first pipe fitting, and the second receiving groove being adapted to receive at least a portion of the second pipe fitting.

3. The kiln assembly for signal facilities according to claim 2, characterized in that, The first pipe fitting has a first connecting port that extends radially through its wall, and the second pipe fitting has a second connecting port that is directly opposite the first connecting port. Both the first and second connecting ports are suitable for the connecting pipe to pass through, and the inner peripheral wall of the first connecting port abuts against the outer peripheral wall of the connecting pipe.

4. The kiln assembly for signal facilities according to claim 1, characterized in that, The first pipe fitting includes: A basic pipe fitting, the bottom of which is adapted to abut against the top of the concrete foundation, and the top of which is provided with a first snap-fit ​​protrusion. A connecting pipe fitting is provided with a second snap-fit ​​groove at the bottom of the connecting pipe fitting, and a first snap-fit ​​protrusion is received in the second snap-fit ​​groove to connect the base pipe fitting and the connecting pipe fitting. A second snap-fit ​​protrusion is provided at the top of the connecting pipe fitting, and the second snap-fit ​​protrusion of one connecting pipe fitting is received in the second snap-fit ​​groove of another adjacent connecting pipe fitting to connect the two adjacent connecting pipe fittings.

5. The kiln assembly for signal facilities according to claim 4, characterized in that, Also includes: The concrete jacking pipe has a third snap-fit ​​groove at its bottom, and the second snap-fit ​​protrusion of the connecting pipe at the top is received in the third snap-fit ​​groove to connect the connecting pipe at the top to the concrete jacking pipe.

6. The kiln assembly for signal facilities according to claim 5, characterized in that, The concrete jacking pipe includes: The connecting part has the third snap-fit ​​groove at its bottom; An extension is provided around the outer periphery of the top of the connecting portion, and a receiving groove is defined between the extension and the connecting portion; wherein The kiln assembly also includes: A concrete sealing plate, which is housed within the receiving groove.

7. The kiln assembly for signal facilities according to claim 1, characterized in that, The wall thickness of the first pipe fitting is d1, and the wall thickness of the second pipe fitting is d2, satisfying that d2 < d1.

8. The kiln assembly for signal facilities according to claim 7, characterized in that, The second pipe fitting has a filling gap between its wall and the pit, and the filling gap is suitable for pouring concrete.

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