Prefabricated assembly type cable trench

Abstract

The utility model relates to cable laying technical field especially relates to a prefabricated assembly type cable trench, aims at solving the problem of the existing prefabricated cable trench connection not firm, poor tightness and low installation efficiency. The cable trench includes a plurality of mutually connectable ditch body and the cover plate of cover setting, every ditch body includes first end and second end, first end is equipped with first connecting part, and second end is equipped with the second connecting part matched with it. The mechanical fixing between ditch body is realized through the cooperation of first connecting part and second connecting part of adjacent ditch body, and the sealing element is arranged at the butt joint, the utility model discloses through the cooperation of connecting part and realizes the mechanical fixing between ditch body, and the stable and reliable structure effectively prevents displacement, guarantees the sealing effect of butt joint, and convenient installation improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cable laying technology, and in particular to a prefabricated assembled cable trench. Background Technology

[0002] Cable trenches are crucial infrastructure used in industries such as power and telecommunications for the protection and laying of cables. Traditionally, cable trenches are constructed using on-site concrete pouring, a method that is time-consuming, complex, heavily influenced by weather conditions, and requires significant manpower and formwork, resulting in high costs.

[0003] To overcome the aforementioned shortcomings, prefabricated cable trenches have emerged in the market. These trenches consist of standardized pre-manufactured components that are then transported to the site for assembly, effectively shortening the construction period and ensuring component quality. However, existing prefabricated cable trenches typically only have simple end-to-end connections during assembly. This connection method results in poor structural stability; when backfilling or uneven settlement of the foundation occurs, the trench components are prone to misalignment or separation, compromising the integrity and continuity of the cable trench. Furthermore, unstable joints are difficult to reliably seal, allowing mud, sand, and rainwater to easily infiltrate the trench, threatening the safe operation of the internal cables.

[0004] Therefore, improving the stability and sealing of prefabricated cable trench connections and simplifying the installation process are technical problems that urgently need to be solved in this field. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, namely, the issues of insecure connections, poor sealing, and low installation efficiency in existing prefabricated cable trenches, this utility model provides a prefabricated assembled cable trench, comprising:

[0006] Multiple interconnected trenches;

[0007] A cover plate installed over the trench;

[0008] Each of the grooves includes a first end and a second end;

[0009] The first end is provided with a first connecting part, and the second end is provided with a second connecting part that cooperates with the first connecting part. Two adjacent grooves cooperate with each other through their first connecting part and second connecting part to achieve mechanical fixation.

[0010] A sealing element is provided at the joint where two adjacent trenches meet.

[0011] Furthermore, the first end is a socket end, the second end is a plug end, and the first connecting part and the second connecting part are fitted together by a socket-plug method.

[0012] Furthermore, the first connecting part includes a fastening hole disposed at the socket end, and the second connecting part includes a threaded connecting part pre-installed at the insertion end; the groove body is connected to the threaded connecting part by a threaded fastener passing through the fastening hole to achieve the mechanical fixation.

[0013] Furthermore, the fastening hole includes a sidewall bolt hole provided on the sidewall of the socket end and a bottom bolt hole provided at the bottom of the socket end; and the threaded connection part includes a sidewall pre-embedded bolt and a bottom pre-embedded bolt pre-installed on the socket end and corresponding to the sidewall bolt hole and the bottom bolt hole, respectively.

[0014] Furthermore, the trench has a U-shaped structure.

[0015] Furthermore, the sealant is a sealant filled at the mating joint.

[0016] Furthermore, a V-shaped groove is provided at the inner bottom of the ditch along its length; and an arc-shaped structure is provided at the connection between the inner sidewall and the inner bottom of the ditch.

[0017] Furthermore, the top opening edge of the groove body is formed with a stepped groove for supporting and positioning the cover plate.

[0018] Furthermore, the threaded fastener is a bolt.

[0019] The beneficial effects of this utility model are:

[0020] This invention achieves mechanical fixing between adjacent trenches by setting a first connecting part and a second connecting part that cooperate with each other at both ends of the trench. In particular, the use of a socket structure supplemented by threaded fasteners for locking makes the trenches form a stable whole, effectively resisting the risk of misalignment and separation caused by external factors such as earthwork backfilling and foundation settlement, and significantly enhancing the structural stability and continuity of the entire cable trench line.

[0021] Based on reliable mechanical fixation, a sealant is installed at the joint, forming a dual protection of mechanical locking and sealing filling. The stable joint provides a durable and reliable adhesion base for the sealant, ensuring that it is not easily damaged by trench displacement. This effectively prevents mud, rainwater, and other contaminants from entering the trench, providing a clean and dry operating environment for the internal cables and ensuring electrical safety.

[0022] By using prefabricated components and standardized connection methods, on-site construction only requires connecting the trench bodies using a socket joint method and then tightening them with bolts and other fasteners. The operation process is simple and clear, requiring minimal technical skills from workers. This greatly simplifies the installation process, shortens the construction cycle, reduces on-site labor costs, and is less affected by weather and other environmental factors.

[0023] The V-shaped groove inside the trench helps to collect any small amount of water that may get in and guide it out, preventing the cables from being submerged in water for a long time; while the arc-shaped transition between the inner wall and the bottom eliminates cleaning dead corners and facilitates later maintenance and cleaning. Attached Figure Description

[0024] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of a prefabricated assembled cable trench according to this utility model;

[0026] Figure 2 This is a schematic diagram of the disassembled structure of a prefabricated cable trench according to this utility model;

[0027] Figure 3 This is a schematic diagram of a U-shaped structure with grooves and a cover plate in a prefabricated cable trench according to this utility model.

[0028] Figure 4 This is a schematic diagram of a U-shaped structure for socket bolt connection in a prefabricated cable trench according to this utility model.

[0029] Figure 5 This is a schematic diagram of bolt connection in a prefabricated cable trench according to this utility model. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, a more detailed description of this utility model will be provided below. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0033] like Figures 1-5 As shown, see details. Figure 1 and Figure 2This utility model proposes a prefabricated assembled cable trench, comprising: a plurality of interconnectable trench bodies 1; a cover plate 2 covering the trench bodies 1; wherein each trench body 1 includes a first end and a second end; the first end is provided with a first connecting part, and the second end is provided with a second connecting part that cooperates with the first connecting part; two adjacent trench bodies 1 are mechanically fixed by their first connecting part and second connecting part cooperating with each other; a sealing element 4 is provided at the joint of two adjacent trench bodies 1.

[0034] This invention provides a modular, prefabricated cable trench system, which consists of multiple standardized trench body 1 units prefabricated in a factory. At the construction site, these trench body 1 units are sequentially connected along the cable laying path to form a continuous cable channel. Each trench body 1 unit has specially designed interconnection structures at both ends, namely a first connecting part and a second connecting part, which can match and securely lock together to form a reliable mechanical fixation.

[0035] See Figure 1 To fundamentally solve the problem of water seepage at the joints, a sealing element 4 is specially installed at the joint formed by the two trenches 1 to create a waterproof barrier. This design abandons the traditional on-site casting construction method, greatly shortens the construction period, reduces on-site wet work and construction waste, and effectively solves the problems of weak connections and poor sealing effect in existing precast cable trenches through structured connection and sealing design, providing a safe and reliable laying environment for outdoor cables.

[0036] The first end is a socket end, and the second end is a plug end. The first connecting part and the second connecting part are fitted together by a socket-plug method.

[0037] See Figure 2 Specifically, to achieve rapid and accurate alignment and initial connection, the connection between the trench body 1 units of this utility model adopts a socket structure. One end of each trench body 1 is designed as a socket end with a larger inner diameter, i.e., the first end, while the other end is designed as a plug end with a slightly smaller outer diameter, i.e., the second end. During on-site assembly, construction personnel only need to insert the plug end of one trench body 1 into the socket end of the next adjacent trench body 1. This socket-fitting method utilizes the geometry of the structure itself for guidance and positioning, making the alignment between trench bodies simple and efficient, eliminating the need for complex measurements and adjustments, and laying a good foundation for subsequent precise tightening and sealing processes. This design not only improves installation efficiency but also provides initial assurance for the linearity and structural stability of the entire cable trench.

[0038] See Figure 4The first connecting part includes a fastening hole disposed at the socket end, and the second connecting part includes a threaded connecting part pre-installed at the insertion end; the groove body 1 passes through the fastening hole and is connected to the threaded connecting part by a threaded fastener 8 to achieve the mechanical fixation. After the initial positioning is completed by the socket and insertion, in order to achieve a truly durable and robust mechanical locking and prevent the connection from loosening due to factors such as foundation settlement, temperature changes or external vibration, this utility model adds a threaded fastening system.

[0039] Specifically, several through-holes are pre-drilled at the socket end, which serves as the first connecting part. At the spigot end, which serves as the second connecting part, a threaded connection with internal threads is pre-embedded at a position corresponding to the fastening holes. When the spigot end is inserted into the socket end, the fastening holes and the threaded connection naturally align. At this point, the installer can pass the threaded fastener 8 through the fastening holes and screw it into the threaded connection. By continuously tightening, the socket end and the spigot end are firmly pulled together and fixed. This method of adding threaded fastening to the socket-sole connection elevates the reliability of the connection from simple physical fitting to high-strength mechanical locking, completely solving the problem of unstable connections.

[0040] See Figure 3 , Figure 4 and Figure 5 The fastening holes include sidewall bolt holes 3 located on the sidewall of the socket end and bottom bolt holes 7 located at the bottom of the socket end; and the threaded connection includes pre-embedded bolts 10 and 9 on the sidewall and bottom of the socket end, respectively, corresponding to the sidewall bolt holes 3 and bottom bolt holes 7. To make the mechanical fastening more secure, this invention employs a multi-point, multi-directional fastening strategy.

[0041] Specifically, side wall bolt holes 3 are provided on both sides of the socket end, and bottom bolt holes 7 are also provided at the bottom. Correspondingly, metal pre-embedded bolts 10 and 9 are pre-embedded at the corresponding positions on the side wall and bottom of the spigot end during manufacturing. These pre-embedded bolts have standard threads inside.

[0042] In this way, after the socket is in place, the connection can be tightened simultaneously from the side and bottom with bolts. This three-dimensional locking method can effectively resist various external forces from horizontal, vertical and torsional directions, making the two trench units act as a whole after connection, greatly enhancing the structural strength and stability of the entire cable trench line, and ensuring safe and reliable long-term use.

[0043] The trench 1 has a U-shaped structure. Viewed in cross-section, it is designed as a standard U-shape. This structure has a flat bottom and two vertical sidewalls, forming a channel with an open top. This shape is one of the classic and optimal structural forms for cable trenches. The U-shaped structure not only provides ample and orderly space for cable laying, facilitating cable arrangement, fixing, and heat dissipation, but its open top design also makes cable installation, addition, removal, and subsequent maintenance very convenient, allowing workers easy access to any cable within the trench.

[0044] The sealing element 4 is the sealant filled at the joint. After the mechanical connection of the two trench bodies 1 is completed through socket welding and bolt tightening, sealant 4 is used to treat the gaps at the connection to achieve a final waterproof seal. Specifically, a special injection tool is used to evenly inject the polymer sealant 4 into the external joint left after the socket end and the spigot end are fitted together. After curing, the sealant forms a continuous waterproof layer with good elasticity and adhesion. It can tightly fill all tiny gaps and adapt to slight expansion and contraction caused by temperature changes, thus effectively preventing external rainwater, groundwater, or silt from entering the cable trench for a long time. This combination of rigid connection and flexible sealing provides dual protection for structural stability and waterproof sealing, completely solving the problem of poor joint sealing effect.

[0045] See Figure 3 The inner bottom of the ditch 1 has a V-shaped groove 5 along its length; and an arc-shaped structure 6 is provided at the connection between the inner sidewall and the inner bottom of the ditch 1. To proactively manage small amounts of moisture that may enter the ditch, such as condensate or rainwater brought in during maintenance, this invention optimizes the internal shape of the ditch 1. A V-shaped groove 5, running the entire length of the ditch, is provided at the center line of the inner bottom surface of the U-shaped ditch 1. Simultaneously, the traditional 90-degree right-angle connection between the inner sidewall and the inner bottom is replaced with a smoothly transitioning arc-shaped structure 6.

[0046] This design offers significant drainage advantages. Specifically, when water droplets appear on the trench walls, the water flows smoothly to the bottom along the curved structure 6 due to gravity, preventing accumulation in corners. Water collected at the bottom naturally flows into and gathers in the V-shaped trench 5. The sloping sides of the V-shaped trench allow water to quickly converge and flow along the overall slope of the cable trench to the designated drainage point. This design constitutes a highly efficient internal drainage system, ensuring the trench remains dry at all times and effectively preventing serious safety hazards such as insulation degradation, short circuits, or corrosion caused by prolonged immersion in water.

[0047] See Figure 3The top opening edge of the groove 1 has a stepped groove for supporting and positioning the cover plate 2. To ensure the cover plate 2 can be securely and smoothly placed on the groove 1, the two upper edges of the top U-shaped opening of the groove 1 are specially treated to form a stepped groove. The depth of this groove is typically designed to be similar to the thickness of the cover plate 2, while its width is slightly greater than the width of the cover plate 2. When the cover plate 2 is placed on the groove 1, its edge fits perfectly into this stepped groove. This invention provides a stable supporting surface for the cover plate 2, preventing it from sliding left or right; the depth of the groove allows the upper surface of the cover plate 2 to be flush with the top surface of the groove 1, creating a flat and aesthetically pleasing appearance and avoiding the risk of tripping due to protrusions; this fitting structure also enhances the seal between the cover plate and the groove, reducing the entry of dust and debris.

[0048] See Figure 5 The threaded fastener 8 is a bolt. The specific form of the aforementioned threaded fastener 8 is specified; it is preferably a standard hex head bolt or socket head cap bolt. Bolts are chosen as fasteners because they are standardized in specifications, have high strength, are highly versatile, and are readily available in the market. During construction, tightening operations can be completed using only ordinary wrenches or socket tools, without the need for special equipment, reducing construction difficulty and cost, and also providing great convenience for future inspection, disassembly, or replacement.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0050] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.

[0051] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0052] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A prefabricated assembled cable trench, characterized in that, include: Multiple interconnected channels (1); Cover plate (2) installed on the trench (1); Each of the grooves (1) includes a first end and a second end; The first end is provided with a first connecting part, and the second end is provided with a second connecting part that cooperates with the first connecting part. Two adjacent grooves (1) cooperate with each other through their first connecting part and second connecting part to achieve mechanical fixation. A seal (4) is provided at the joint of the two adjacent trenches (1).

2. The prefabricated cable trench according to claim 1, characterized in that: The first end is a socket end, and the second end is a plug end. The first connecting part and the second connecting part are fitted together by a socket-plug method.

3. The prefabricated assembled cable trench according to claim 2, characterized in that: The first connecting part includes a fastening hole provided at the socket end, and the second connecting part includes a threaded connecting part pre-set at the insertion end; the groove (1) passes through the fastening hole and is connected to the threaded connecting part by a threaded fastener (8) to achieve the mechanical fixation.

4. The prefabricated cable trench according to claim 3, characterized in that: The fastening holes include sidewall bolt holes (3) provided on the sidewall of the socket end and bottom bolt holes (7) provided at the bottom of the socket end; and the threaded connection part includes sidewall pre-embedded bolts (10) and bottom pre-embedded bolts (9) pre-embedded on the socket end and corresponding to the sidewall bolt holes (3) and the bottom bolt holes (7) respectively.

5. The prefabricated cable trench according to claim 1, characterized in that: The trench (1) has a U-shaped structure.

6. The prefabricated cable trench according to claim 1, characterized in that: The sealant (4) is the sealant used to fill the butt joint.

7. The prefabricated assembled cable trench according to claim 1, characterized in that: The inner bottom of the ditch (1) is provided with a V-shaped ditch (5) along its length direction; and an arc-shaped structure (6) is provided at the connection between the inner sidewall and the inner bottom of the ditch (1).

8. The prefabricated cable trench according to claim 1, characterized in that: The top opening edge of the groove (1) is formed with a stepped groove for supporting and positioning the cover plate (2).

9. The prefabricated cable trench according to claim 3, characterized in that: The threaded fastener (8) is a bolt.

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