A closed cable trench cover plate

Abstract

This invention relates to a closed cable trench cover, integrally molded from fiber-reinforced composite material using a one-time molding process. The cover includes a cover body, inverted retaining edge structures at the front and rear ends, and snap-fit ​​water-guiding structures on the left and right sides. The snap-fitting parts of the inverted retaining edge structures overlap the top of the cable trench wall. When the cover is subjected to prying force, the top of the trench wall forms a downward limiting reaction force on the snap-fitting parts, preventing the cover from tilting. The grooves of the snap-fit ​​water-guiding structures are located directly below the joints of adjacent cover panels, connecting with the drainage channel to form a continuous drainage channel to catch leaked water. The inverted retaining edge structures and the snap-fit ​​water-guiding structures work together through an integral molding structure to form a double seal from top to bottom, requiring no additional parts. This effectively solves the problems of easy tilting of the cover, poor sealing, and poor drainage, making it suitable for power facilities with high safety requirements.

Description

Technical Field

[0001] This invention relates to the field of power facility protection technology, specifically to a closed cable trench cover for use in substations, power distribution rooms and other places, and more particularly to a cable trench cover that achieves anti-warping, efficient drainage and auxiliary part-free sealing through an integral molding structure. Background Technology

[0002] Cable trenches are a critical area in substations, and their safety directly impacts the stable operation of the power supply. Traditional cable trench covers are typically flat and rest on the trench under their own weight after installation. In practice, when inspection personnel walk on the edges of the covers, one side can easily lift up, potentially causing tripping injuries or even displacement of the covers, compromising the integrity of the cable trench. Furthermore, the sharp edges of traditional covers pose a risk of bumps and cuts in wet environments. More seriously, the large gaps between the covers and the cable trench fail to effectively prevent small animals like rats from entering, posing a potential threat of gnawing and damaging the internal cables. Additionally, in rainy areas, rainwater easily accumulates on the surface of the covers or in the gaps, lacking effective drainage paths, further exacerbating safety hazards. Summary of the Invention

[0003] This invention overcomes the shortcomings of the prior art and provides a closed cable trench cover to solve the problems of easy lifting, poor sealing and poor drainage performance of the cover in the prior art. It achieves the synergy of anti-lifting, drainage and sealing without the need for any additional sealing components.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a closed cable trench cover, comprising: a cover body; a pair of inverted retaining edge structures integrally formed at the front and rear ends of the cover body; the inverted retaining edge structure includes a fastening part extending downward from the edge of the cover body, the fastening part being used to overlap the top of the cable trench wall, and when the cover is subjected to an upward prying force, the top of the trench wall forms a downward limiting reaction force on the fastening part; a pair of snap-fit ​​water guiding structures integrally formed on the left and right sides of the cover body; wherein, the first snap-fit ​​water guiding structure on the first side is provided with a recessed groove and a first flow channel located directly below the joint of two adjacent cover plates, and the second snap-fit ​​water guiding structure on the second side is provided with a second flow channel corresponding to the first flow channel; When two adjacent cover plates are spliced ​​together, the first flow channel and the second flow channel are connected to form a continuous drainage channel, and the sunken groove is used to catch water that leaks from the splice joint. The cover does not contain any additional components for sealing. The inverted edge structure and the snap-fit ​​water-guiding structure work together through the integrally formed structure to form a double seal from top to bottom, so as to simultaneously achieve the functions of preventing the cover from lifting, efficient drainage, and preventing small animals from entering.

[0005] Furthermore, the groove is a slot-shaped structure that penetrates the cover plate body and is closely attached to the side of the cover plate body.

[0006] Furthermore, an upper drainage groove is provided on the upper surface of the cover plate body along the length direction of the groove, and the width of the upper drainage groove is slightly narrower than the length of the fastening part.

[0007] Furthermore, the upper surface of the cover plate body is provided with an anti-slip structure.

[0008] Furthermore, the cover plate body, the snap-fit ​​water guiding structure, and the inverted retaining edge structure are formed by integral molding of fiber-reinforced composite material.

[0009] Furthermore, when the enclosed cable trench cover is used at the end of the cable trench, the snap-fit ​​water-guiding structure located on one side of the end can be cut off.

[0010] Furthermore, when there are obstacles on both sides of the cable trench, all or part of the inverted retaining edge structure can be cut off to adapt to the installation environment.

[0011] Furthermore, the inner side of the fastening part is provided with a guide slope.

[0012] Furthermore, all exposed edges of the enclosed cable trench cover are designed with rounded corners.

[0013] Furthermore, at the right-angle bend of the cable trench, the first corner cover plate laid first is provided with a first snap-fit ​​water guiding structure on the side facing the inside of the corner, and the second corner cover plate laid later is provided with a second snap-fit ​​water guiding structure on the side near the corner. The second guiding channel is connected and fitted with the first guiding channel.

[0014] Furthermore, the synergistic effect of the inverted retaining edge structure and the snap-fit ​​water guiding structure forms a force transmission chain, so that the limiting reaction force of the inverted retaining edge acts directly on the snap-fit ​​water guiding structure, maintaining the sealing of the splice seam.

[0015] The present invention discloses a method for installing a closed cable trench cover, comprising the following steps: S1: Prepare the cable trench and multiple enclosed cable trench covers as described above; S2: Move the first cover plate to the top of the starting position of the cable trench, adjust its position so that the fastening parts at the front and rear ends are aligned and overlapped on the top of the trench walls on both sides of the cable trench. S3: Along the extension direction of the cable trench, align and fit the second flow channel of the second snap-fit ​​water guiding structure of the second cover plate above the first flow channel of the first snap-fit ​​water guiding structure of the first cover plate, while ensuring that the snap-fit ​​part of the second cover plate overlaps the top of the trench wall. S4: Repeat step S3 until the entire cable trench is laid; S5: For the last cover plate at the end of the cable trench, if its outer snap-fit ​​water-guiding structure obstructs installation, cut it off before placing it.

[0016] Compared with the prior art, the present invention has the following beneficial effects.

[0017] 1. The present invention uses the inverted edge structure at both ends to make the cover plate firmly overlap the top of the cable trench wall, forming a physical limit, which fundamentally solves the problem of the cover plate tilting up on one side when people step on it, and ensures the safety of inspection.

[0018] 2. The present invention uses snap-fit ​​water-guiding structures on the left and right sides, which allow adjacent cover plates to fit together to form an integral load-bearing unit, thereby enhancing the overall stability of the structure. At the same time, the continuous drainage channel formed by splicing can efficiently drain water from the surface of the cover plates and the gaps, avoiding the risk of water accumulation.

[0019] 3. All exposed edges of the cover plate of this invention are designed with rounded corners, which significantly reduces the risk of people being bumped or scratched.

[0020] 4. The inverted edge structure and the snap-fit ​​water-guiding structure of this invention work together to form a double seal: the upper part is sealed by the inverted edge pressing, and the lower part is sealed by the tightly fitted snap-fit ​​structure, which greatly reduces the gap between the cover plate and the cable trench, effectively blocking the intrusion path of small animals such as rats and protecting the safety of the internal cables.

[0021] 5. The cover plate body, the snap-fit ​​water guiding structure and the inverted retaining edge structure of the present invention are integrally molded from composite materials, which ensures that there are no connecting gaps between complex geometric features, and that the overall strength and sealing performance are high. This is the structural basis for achieving all the above-mentioned beneficial effects. Attached Figure Description

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 for Figure 1 A magnified view of a portion of region 1.

[0025] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 4 This is a schematic diagram of the bottom structure after the cover plates are spliced ​​together in this invention.

[0027] Figure 5 This is a side view of the structure after the cover plates are spliced ​​together in this invention.

[0028] Figure 6 This is a schematic diagram of the assembly of the present invention with a cable trench.

[0029] Figure 7 This is a top-view three-dimensional structural diagram of the cover plate in this invention.

[0030] Figure 8 This is a bottom-view three-dimensional structural diagram of the cover plate in this invention.

[0031] In the diagram: 1 is the cover plate body, 11 is the upper drainage groove, 2 is the snap-fit ​​water guiding structure, 21 is the first snap-fit ​​water guiding structure, 211 is the groove, 212 is the first flow guiding channel, 22 is the second snap-fit ​​water guiding structure, 221 is the second flow guiding channel, 3 is the inverted edge retaining structure, 31 is the fastening part, 100 is the cable trench, and 101 is the top of the trench wall. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments.

[0033] like Figures 1 to 8 As shown, the enclosed cable trench cover of the present invention is mainly composed of a cover body 1, a pair of snap-fit ​​water guiding structures 2 and a pair of inverted edge retaining structures 3. The three are formed by integral molding process using fiber reinforced composite material (such as SMC sheet molding compound), which ensures the integrity and strength of the structure.

[0034] The working principle of this invention is as follows: Installation Process: First, the first cover plate is moved to the starting position above the cable trench 100. The operator adjusts its position so that the snap-fit ​​parts 31 of the inverted retaining edge structures 3 at both ends of the cover plate accurately overlap the top 101 of the trench walls on both sides of the cable trench. The snap-fit ​​parts 31 extend downward from the edge of the cover plate body 1 and form an inward (towards the center of the cable trench) horizontal or oblique extension section at the end. This allows the top 101 of the trench wall to generate a downward limiting reaction force on the extension section when the cover plate is subjected to an upward prying force, preventing the cover plate from tilting. The guide slope on the inner side of the snap-fit ​​part 31 helps the cover plate to be quickly aligned and placed. Next, the second cover plate is taken, and the second snap-fit ​​water guiding structure 22 on its second side is aligned with the first snap-fit ​​water guiding structure 21 on the first side of the first cover plate, and then snapped downward. At this time, the second flow channel 221 and the first flow channel 212 are precisely connected to form a continuous and unobstructed drainage channel. At the same time, the inverted retaining edge structure 3 of the second cover plate itself also overlaps the top 101 of the trench wall. Repeat this process to complete the laying of the entire cable trench. For the last cover plate located at the end of the cable trench, if there is no splicing object for the snap-fit ​​water guiding structure 2 on its outer side, it can be cut off to ensure a flat end.

[0035] Usage: When people walk on the cover, even if they step on the edge, the cover cannot tilt upwards due to the physical obstruction of the inverted edge structure 3, ensuring walking safety. The upper drainage groove 11 and the added anti-slip structure on the upper surface of the cover guide water flow and increase friction to prevent slipping and falling. During rainfall, rainwater falling on the cover surface will flow to both sides along the upper drainage groove 11. At the same time, a small amount of rainwater that seeps into the gaps between the cover joints will be captured by the groove 211 below and flow into the continuous drainage channel composed of the first and second diversion channels (212, 221), and will eventually be quickly drained away, preventing water accumulation. Throughout the entire service life, the tight fit between the inverted edge structure 3 and the top of the ditch wall 101, as well as the closed joint formed by the snap-fit ​​water guiding structure 2, together constitute a tight barrier, effectively preventing the intrusion of small animals from the outside.

[0036] In practical engineering, cable trenches often have non-straight sections such as right-angle turns. To adapt to such structures, this invention also provides a dedicated corner cover combination laying scheme.

[0037] At the right-angle bend of the cable trench, a cover plate is first laid along the end of one of the straight trench sections. The front and rear ends of the cover plate are provided with inverted retaining structures 3, which are used to overlap the top 101 of the trench walls on both sides of the trench section. At the same time, a first snap-fit ​​water guiding structure 21 is provided on the side facing the inside of the corner, on which a first flow guiding channel 212 is formed, and an interface for splicing is reserved.

[0038] Subsequently, on another ditch section perpendicular to it, corner covers are laid. These covers have an inverted retaining structure 3 only on the side furthest from the corner, overlapping the top 101 of the ditch wall on that side; the side closer to the corner does not have an inverted retaining structure, but instead has a second snap-fit ​​water guiding structure 22, on which a second flow channel 221 is formed. During installation, the second flow channel 221 of the cover is aligned and fitted onto the first flow channel 212 of the already laid cover on the other ditch section, so that the two connect to form a continuous, unobstructed drainage channel.

[0039] If the corner area has a large span, multiple transition covers can be added sequentially between the two ditch sections. Each transition cover should be configured with a single-sided inverted retaining edge structure 3 and a single-sided snap-fit ​​water guiding structure according to the above principles to ensure consistent splicing direction and continuous drainage path. After the corner area is laid, the subsequent straight sections can be laid using conventional covers with inverted retaining edge structures 3 on both sides, thus achieving complete, closed, and unobstructed drainage coverage from straight sections, corner sections, and straight sections.

[0040] This corner laying method does not require custom-made irregular components. It can adapt to complex paths simply by directional combination of standard cover plates, which not only ensures the overall stability and sealing of the structure, but also maintains the continuity of drainage function.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A closed cable trench cover, characterized in that include: Cover plate body (1); A pair of inverted retaining edge structures (3) are integrally formed at the front and rear ends of the cover plate body (1); The inverted retaining edge structure (3) includes a fastening part (31) extending downward from the edge of the cover plate body (1). The fastening part (31) is used to overlap the top (101) of the trench wall of the cable trench (100). When the cover plate is subjected to an upward prying force, the top (101) of the trench wall forms a downward limiting reaction force on the fastening part (31). A pair of snap-fit ​​water guiding structures (2) are integrally formed on the left and right sides of the cover plate body (1); wherein, the first snap-fit ​​water guiding structure (21) on the first side is provided with a recessed groove (211) and a first flow channel (212) located directly below the splice seam of two adjacent cover plates, and the second snap-fit ​​water guiding structure (22) on the second side is provided with a second flow channel (221) corresponding to the first flow channel (212). When two adjacent cover plates are spliced ​​together, the first flow channel (212) and the second flow channel (221) are connected to form a continuous drainage channel, and the sunken groove (211) is used to receive water that leaks from the splice joint; The cover does not contain any additional components for sealing. The inverted edge structure (3) and the snap-fit ​​water guiding structure (2) work together through the integrally formed structure to form a double seal at the top and bottom, so as to simultaneously achieve the functions of preventing the cover from lifting, efficient drainage and blocking small animals from entering.

2. A cover for a cable pit according to claim 1, wherein The groove (211) is a groove-shaped structure that penetrates the cover plate body (1) and is close to the side of the cover plate body (1).

3. A cover for a cable pit according to claim 1, wherein The upper surface of the cover plate body (1) is provided with an upper drainage groove (11) along the length direction of the groove (211), and the width of the upper drainage groove (11) is slightly narrower than the length of the fastening part (31).

4. A closed cable trench cover according to claim 1, wherein The upper surface of the cover plate body (1) is provided with an anti-slip structure.

5. A closed cable trench cover according to claim 1, wherein When the closed cable trench cover is used at the end of the cable trench (100), the snap-fit ​​water-guiding structure (2) located on one side of the end can be cut off.

6. A closed cable trench cover according to claim 1, wherein When there are obstacles on both sides of the cable trench (100), all or part of the inverted edge structure (3) can be cut off to adapt to the installation environment.

7. A closed cable trench cover according to claim 1, wherein The inner side of the fastening part (31) is provided with a guide slope.

8. A closed cable trench cover according to claim 1, wherein, At the right-angle bend of the cable trench, the first corner cover plate laid first is provided with a first snap-fit ​​water guiding structure (21) on the side facing the inside of the corner, and the second corner cover plate laid later is provided with a second snap-fit ​​water guiding structure (22) on the side near the corner. The second guiding channel (221) is connected and fitted with the first guiding channel (212).

9. A closed cable trench cover according to claim 1, characterized in that, The synergistic effect of the inverted edge retaining structure (3) and the snap-fit ​​water guiding structure (2) forms a force transmission chain, so that the limiting reaction force of the inverted edge retaining structure (3) directly acts on the snap-fit ​​water guiding structure (2) to maintain the sealing of the splice seam.

10. A method for installing a closed cable trench cover as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Prepare the cable trench (100) and multiple enclosed cable trench covers as described; S2: Move the first cover plate to the starting position above the cable trench (100), adjust its position so that the fastening parts (31) at the front and rear ends are aligned and overlapped on the top of the trench wall (101) on both sides of the cable trench (100). S3: Along the extension direction of the cable trench (100), align and fit the second flow channel (221) of the second snap-fit ​​water guiding structure (22) of the second cover plate above the first flow channel (212) of the first snap-fit ​​water guiding structure (21) of the first cover plate, while ensuring that the snap-fit ​​part (31) of the second cover plate overlaps the top of the trench wall (101). S4: Repeat step S3 until the entire cable trench is laid; S5: For the last cover plate at the end of the cable trench, if the outer snap-fit ​​water-guiding structure (2) obstructs the installation, cut it off and place it.

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