A waterproof cable trench

Abstract

The utility model discloses a waterproof cable trench, including the ditch body, a plurality of first drain pipes along longitudinal distribution, a plurality of second drain pipes along longitudinal distribution, a plurality of waterproof apron along longitudinal arrangement and at least a group linear slit drainage ditch, the rainwater outside cable trench enters the drainage slit of linear slit drainage ditch, and the rainwater that falls on waterproof apron passes through the water guide groove on waterproof apron and flows into drainage slit, then the rainwater falls into the drainage groove and is taken away through the second drain pipe, is equipped with the first sealing structure between outer wall body and waterproof apron, is equipped with the second sealing structure between two waterproof aprons, make the ditch body have good sealing property, and then make cable trench have better waterproof performance, and a small amount of rainwater that infiltrates into the groove can be along sand body layer and sand layer path and be arranged into perforated flower pipe, then are taken away through the first drain pipe, make the ditch body have good drainage dry performance.

Description

Technical Field

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

[0002] Cable trenches are an important component of urban power grid channels. They are typically laid beneath sidewalks or green belts, and movable covers are installed along their length to facilitate cable laying and maintenance. To meet waterproofing and drainage requirements, the trenches are usually filled with sand. Currently, however, it is still observed that water seepage within cable trenches leads to damp conditions, and in some cases, cables are submerged, seriously threatening the operational safety of the cables. The main causes of water seepage inside cable trenches are: ① Large runoff of rainwater at the top of the cable trench. When the cable trench is laid under the sidewalk, rainwater from both sides of the road flows through the top of the cable trench to the rainwater inlet of the motor vehicle lane. The large runoff of rainwater increases the probability of water seepage in the cable trench; ② The cable trench cover is not tightly sealed. To facilitate the removal and placement of the cover, there are gaps between conventional cable trench covers, and runoff rainwater can easily enter the cable trench through the gaps; ③ Impurities in the sand gaps in the cable trench cause sand blockage. Initially, the runoff rainwater contains a lot of impurities, which are trapped in the sand gaps. If not cleaned for a long time, the drainage in the cable trench will be poor; ④ Leakage of the internal sand filling causes blockage of the drainage pipes in the cable trench. The sand particles are small in size and are very easy to leak into the drainage pipes with the water flow, resulting in blockage of the drainage pipes. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a waterproof cable trench with excellent waterproof and drainage performance.

[0004] A waterproof cable trench according to an embodiment of the present invention includes a trench body, multiple longitudinally distributed first drainage pipes, multiple longitudinally distributed second drainage pipes, multiple longitudinally arranged waterproof cover plates, and at least one set of linear gap drainage ditches. The trench body includes two transversely distributed outer walls, both of which extend longitudinally, forming a trench between them. The trench is provided with a gravel layer and a sand layer from bottom to top. The inner wall of the trench is provided with a support for cables. The sand layer is configured to cover the cables and the support. Both outer walls are provided with a longitudinally extending first sealing structure. One end of the first drainage pipe is provided with a perforated perforated pipe, which is located at the bottom of the trench and covered by the gravel layer. The other end of the first drainage pipe is provided with... The linear slotted drainage ditch extends to the rainwater well; it includes a drainage cover and a longitudinally extending drainage trough, the drainage trough being located outside the first sealing structure, the drainage trough having a longitudinally extending drainage channel, the drainage cover covering the drainage trough, the drainage cover having multiple horizontally arranged vertical plates, the vertical plates extending longitudinally, and a drainage slot communicating with the drainage trough being formed between adjacent vertical plates; one end of the second drainage pipe communicating with the drainage trough, and the other end being configured to extend to the rainwater well; the two ends of the waterproof cover abutting against two of the first sealing structures in the transverse direction, a second sealing structure being provided between adjacent waterproof cover plates, the upper surface of the waterproof cover having a water guide channel communicating with the drainage slot.

[0005] It has at least the following beneficial effects: rainwater outside the cable trench enters the drainage gaps of the linear slot drainage ditch, while rainwater falling on the waterproof cover plate flows into the drainage gaps through the water guide channel, and then falls into the drainage trough and is discharged through the second drainage pipe. A first sealing structure is provided between the outer wall and the waterproof cover plate, and a second sealing structure is provided between two adjacent waterproof cover plates, so that the trench has good sealing performance, thereby giving the cable trench good waterproof performance. Even if a small amount of rainwater seeps into the trench, the small amount of rainwater can also be discharged into the perforated pipe along the sand and gravel layer path, and then discharged through the first drainage pipe, so that the trench has good drainage and drying performance.

[0006] According to some embodiments of this utility model, a locking member is also included. The vertical plate is provided with a first connecting hole communicating with the drainage gap, and the waterproof cover is provided with a second connecting hole communicating with the water guide channel. The first connecting hole, the second connecting hole and the water guide channel can be connected in sequence so that rainwater in the water guide channel can pass through the second connecting hole and the first connecting hole. The locking member can be inserted through the first connecting hole and the second connecting hole to lock the vertical plate and the waterproof cover together.

[0007] According to some embodiments of the present invention, the first connecting hole includes a vertical part and a horizontal part connected together. The vertical part is opened on the upper surface of the vertical plate, one end of the horizontal part is connected to the lower end of the vertical part, and the length direction of the second connecting hole is parallel to the length direction of the horizontal part.

[0008] According to some embodiments of the present invention, the overall cross-sectional shape of the drainage trough is U-shaped, and two stepped grooves for accommodating the two ends of the cover plate are respectively provided on the two inner walls of the drainage trough opening in the horizontal direction. The two ends of the cover plate in the horizontal direction are respectively located in the two stepped grooves.

[0009] According to some embodiments of the present invention, the waterproof cover plate includes an outer frame, a support plate, and a permeable paving layer. The outer frame is square, and the inner wall of the outer frame is provided with a U-shaped support portion. The outer edge of the lower surface of the support plate is sealed to the support portion. The permeable paving layer is disposed on the support plate, and a U-shaped water guide groove is formed between the inner wall of the outer frame and the end face of the permeable paving layer.

[0010] According to some embodiments of this utility model, both the outer frame and the support plate are made of stainless steel, and the outer frame and the support plate are connected by welding, forming a seal between the outer frame and the support plate.

[0011] According to some embodiments of the present invention, the waterproof cover plate is provided with a first sealing component and a second sealing component on the end faces of both ends in the longitudinal direction. The first sealing component and the second sealing component extend in the transverse direction and are staggered in the vertical direction. The first sealing component on the waterproof cover plate and the second sealing component on the other waterproof cover plate are distributed vertically and abut against each other to form the second sealing structure.

[0012] According to some embodiments of the present invention, a water collection well is also provided outside the linear slot drainage ditch, the drainage channel is connected to the water collection well, and one end of the second drainage pipe is connected to the drainage channel through the water collection well.

[0013] According to some embodiments of the present invention, a limiting groove extending in the longitudinal direction is provided on the outer side of the upper surface of the outer wall, and the drainage trough is disposed in the limiting groove.

[0014] According to some embodiments of the present invention, a water collection trough is provided at the bottom of the trench, and the perforated flower pipe is disposed in the water collection trough.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA; Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point B; Figure 4 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure at the CC section; Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point D; Figure 7 This is a partial structural diagram of the locking member and the vertical plate according to an embodiment of the present utility model; Figure 8 This is a cross-sectional structural diagram of the locking component and the waterproof cover plate according to an embodiment of the present utility model; Reference numerals: Cable 10, Rainwater Well 20, Motor Vehicle Lane 30, Green Belt 40, Non-Motor Vehicle Lane 50, Exterior Wall 100, Trench 110, Water Collection Tank 111, Sand and Gravel Layer 120, Sand Body Layer 130, Support 140, First Sealing Structure 150, Limiting Groove 160, First Drainage Pipe 200, Perforated Flower Pipe 210, Linear Gap Drainage Ditch 300, Drainage Cover 310, Vertical Plate 311, First Connecting Hole 3111, Drainage Tank Body 320, Drainage Tank 321, Drainage Gap 330, Second Drainage Pipe 400, Waterproof Cover 500, Water Guide Channel 510, Second Connecting Hole 520, Outer Frame 530, Support Part 531, Support Plate 540, Permeable Pavement Layer 550, Second Sealing Structure 600, First Sealing Component 610, Second Sealing Component 620, Locking Part 700, Water Collection Well 800. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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 limitations on this utility model.

[0018] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Reference Figures 1 to 4 This utility model discloses a waterproof cable trench, comprising a trench body, multiple longitudinally distributed first drainage pipes 200, multiple longitudinally distributed second drainage pipes 400, multiple longitudinally arranged waterproof cover plates 500, and at least one set of linear gap drainage ditches 300. The trench body includes two transversely distributed outer walls 100, both of which extend longitudinally, forming a trench 110 between the two outer walls 100, which also extends longitudinally. It should be noted that the trench body also includes a bottom wall, with the lower ends of the two outer walls 100 located at both ends of the bottom wall in the transverse direction. The two outer walls 100 and the bottom wall together form the trench 110, making the overall cross-sectional shape of the trench U-shaped.

[0021] The trench 110 is provided with a sand and gravel layer 120 and a sand body layer 130 from bottom to top. The sand and gravel layer 120 can be made of pebbles and / or gravel, and the sand body layer 130 can be made of sand. The voids in the sand and gravel layer 120 are larger than those in the sand body layer 130, which makes the permeability of the sand and gravel layer 120 greater than that of the sand body layer 130, while the filtration effect of the sand body layer 130 is greater than that of the sand and gravel layer 120.

[0022] Reference Figure 2 and Figure 4The inner wall of the trench 110 is provided with supports 140 for the cables 10. The sand layer 130 is configured to cover the cables 10 and the supports 140. It should be noted that the inner wall of the trench 110 is also the inner wall of the outer wall 100. Multiple supports 140 are longitudinally distributed on the inner walls of both outer walls 100. The supports 140 are vertically arranged and are used to support multiple sets of cables 10 distributed vertically. It can be understood that the cables 10 can be communication cables or power cables. The upper surface of the gravel layer 120 is lower than the lower end face of the supports 140. The sand layer 130 is laid on the gravel layer 120 and is higher than the upper end face of the supports 140, so that the sand layer 130 can completely cover the supports 140 and all the cables 10 on the supports 140. The sand particles of the sand layer 130 cover the cables 10 and form a dense structure. The sand particles have the functions of water permeability, drainage, and fire resistance. The spacing between two adjacent brackets 140 and the number of cable groups on the bracket 140 can be determined according to the actual situation and the actual industry standards.

[0023] Reference Figure 2 , Figure 4 and Figure 5 Multiple first drainage pipes 200 are equipped with perforated perforated pipes 210 at one end. All perforated perforated pipes 210 are located at the bottom of the trench 110 and covered by a layer of sand and gravel 120. The other end of all first drainage pipes 200 is configured to extend to a rainwater well 20. A small amount of rainwater seeping into the trench 110 can permeate through the sand layer 130 and the sand and gravel layer 120 before entering the perforated perforated pipes 210. Then, the rainwater is discharged into the rainwater well 20 through the first drainage pipes 200, thus achieving drainage of the cable trench, keeping the cable trench dry, and improving the safety of the cable trench. It should be noted that the perforated perforated pipes 210 are hollow pipes with multiple permeable holes on their outer wall for water to pass through. All perforated perforated pipes 210 are distributed longitudinally at the bottom of the trench 110, and the spacing between two adjacent perforated perforated pipes 210 can be set according to the actual situation. The rainwater well 20 is an existing infrastructure in the city.

[0024] Reference Figure 2 , Figure 3 , Figure 5 and Figure 6Both exterior walls 100 are provided with a first sealing structure 150 extending longitudinally. The linear gap drainage ditch 300 includes a drainage cover plate 310 and a drainage trough 320 extending longitudinally. The drainage trough 320 is located outside the first sealing structure 150. The drainage trough 320 is provided with a drainage trough 321 extending longitudinally. The drainage cover plate 310 covers the drainage trough 321. The drainage cover plate 310 is provided with multiple horizontally arranged vertical plates 311. The vertical plates 311 extend longitudinally. A drainage gap 330 communicating with the drainage trough 321 is formed between two adjacent vertical plates 311. Rainwater can pass through the drainage gap 330 and enter the drainage trough 321. The drainage trough 321 has the function of collecting and draining rainwater.

[0025] Reference Figure 2 and Figure 3 In some embodiments, the overall cross-sectional shape of the drainage trough 320 is U-shaped. Two stepped grooves are respectively provided on the two inner walls of the drainage trough 321 in the transverse direction to accommodate the two ends of the cover plate 310 in the transverse direction. The two ends of the cover plate 310 in the transverse direction are respectively located in the two stepped grooves, so that the upper surface of the cover plate 310 is flush with or lower than the upper surface of the drainage trough 320. This allows water flowing over the upper surface of the cover plate 310 to flow into the drainage trough 321 through the gap between the cover plate 310 and the drainage trough 320. The two stepped grooves also define the installation position of the cover plate 310, facilitating its installation. The lower ends of the two outermost vertical plates 311 in the transverse direction are connected to the cover plate 310. Adjacent vertical plates 311 are connected by multiple reinforcing ribs. The drainage gap 330 penetrates the upper and lower surfaces of the cover plate 310, allowing the drainage gap 330 to communicate with the drainage trough 321.

[0026] One end of all the second drain pipes 400 is connected to the drainage channel 321, and the other end of all the second drain pipes 400 is configured to extend to the rainwater well 20. Rainwater enters the drainage channel 321 through the drainage gap 330, and then the rainwater is discharged into the rainwater well 20 through the second drain pipes 400.

[0027] The second drainage pipe 400, the first drainage pipe 200, and the perforated flower pipe 210 can all be made of stainless steel. The gravel layer 120 can prevent sand particles from the sand body layer 130 from entering the perforated flower pipe 210, reducing sand loss and lowering the risk of blockage in the perforated flower pipe 210 and the first drainage pipe 200. The voids in the gravel layer 120 are larger than those in the sand body layer 130, achieving better water distribution. In extreme cases, rainwater that seeps into the sand body layer 130 in the trench 110 can be more efficiently guided into the perforated flower pipe 210 through the gravel layer 120. When backwash water is transported into the trench 110 through the first drainage pipe 200 and the perforated flower pipe 210, the gravel layer 120 can distribute the backwash water more evenly to all parts of the sand body layer 130, achieving a better backwashing effect.

[0028] The first sealing structure 150 greatly improves the waterproofing effect of the cable trench and provides cushioning during the installation of the waterproof cover 500, preventing direct impact between the waterproof cover 500 and the outer wall 100. The two ends of the waterproof cover 500 rest against the two first sealing structures 150, sealing the waterproof cover 500 with the outer wall 100. A second sealing structure 600 is provided between adjacent waterproof cover 500s, sealing them together to prevent rainwater from entering the trench 110 and keeping the trench 110 dry. A water guide groove 510 is provided on the upper surface of the waterproof cover 500, communicating with the drainage gap 330. Rainwater falling on the waterproof cover 500 flows through the water guide groove 510 into the drainage gap 330, and then through the drainage gap 330 into the drainage channel 321.

[0029] It is conceivable that the waterproof cable trench is located at the sidewalk location, with the sidewalk directly above the waterproof cover plate 500. In conventional urban planning designs, the motor vehicle lane 30, green belt 40, non-motor vehicle lane 50, and sidewalk are arranged sequentially in the horizontal direction. Multiple rainwater wells 20 are distributed longitudinally within the motor vehicle lane 30. These rainwater wells 20 are connected to the other ends of multiple first drainage pipes 200 and multiple second drainage pipes 400. The multiple first drainage pipes 200 and multiple second drainage pipes 400 are all buried underground, meaning they are buried beneath the green belt 40 and the non-motor vehicle lane 50.

[0030] Reference Figure 2 and Figure 3 The linear slotted drainage ditch 300 is located on the outer side of the upper end of the exterior wall 100. A first sealing structure 150 is provided between the inner wall of the trench 110 and the linear slotted drainage ditch 300. A waterproof cover plate 500 is pressed against the first sealing structure 150 to prevent rainwater from seeping into the trench 110 from the end of the waterproof cover plate 500. The ends of the waterproof cover plate 500 extend laterally to the top of the drainage cover plate 310. When the number of linear slotted drainage ditches 300 is one set, the linear slotted drainage ditches 300 can be located on the outer side of the upper end of any exterior wall 100. In this embodiment, there are two sets of linear slotted drainage ditches 300, which are located on the outer side of the upper ends of two exterior walls 100. This allows water on the waterproof cover plate 500 to pass through the two sets of linear slotted drainage ditches 300, improving the drainage capacity and efficiency of the waterproof cover plate 500, thereby improving the waterproof capacity of the cable trench and the drainage capacity and efficiency of the sidewalk.

[0031] Under drainage and waterproofing conditions, rainfall causes surface runoff. Before reaching the waterproof cover 500, the runoff is intercepted by the linear slotted drainage ditch 300. The rainwater then flows into the rainwater well 20 through the drainage slots 330, drainage channels 321, and the second drainage pipe 400. Rainwater falling on the waterproof cover 500 flows into the water guide channel 510, and then flows into the rainwater well 20 through the drainage slots 330, drainage channels 321, and the second drainage pipe 400. Due to the installation of the first sealing structure 150 and the second sealing structure 600, rainwater cannot penetrate into the trench 110 between the waterproof cover 500 and the outer wall 100, or between two adjacent waterproof cover plates 500, thus providing a better sealing effect for the cable trench and improving its waterproof performance.

[0032] Reference Figure 3 In some embodiments, the waterproof cable trench further includes a locking member 700. The vertical plate 311 is provided with a first connecting hole 3111 communicating with the drainage gap 330, and the waterproof cover plate 500 is provided with a second connecting hole 520 communicating with the water guide channel 510. The first connecting hole 3111, the second connecting hole 520 and the water guide channel 510 can be connected in sequence so that rainwater in the water guide channel 510 can pass through the second connecting hole 520 and the first connecting hole 3111, and then the rainwater enters the drainage gap 330 and falls into the drainage channel 321, so that the rainwater is discharged into the drainage channel 321. The locking member 700 can be inserted through the first connecting hole 3111 and the second connecting hole 520 to lock the vertical plate 311 and the waterproof cover plate 500 together, so that the waterproof cover plate 500 can be connected to the vertical plate 311 while pressing against the first sealing structure 150, and finally locking the waterproof cover plate 500 on the linear gap drainage trench 300.

[0033] Reference Figure 3 and Figure 7 In some embodiments, the first connecting hole 3111 includes a connected vertical portion and a horizontal portion. The vertical portion is formed on the upper surface of the vertical plate 311, and one end of the horizontal portion communicates with the lower end of the vertical portion. The length direction of the vertical portion is parallel to the vertical direction, and the length direction of the horizontal portion is parallel to the longitudinal direction, making the first connecting hole 3111 L-shaped. The axial direction of the first connecting hole 3111 is parallel to the transverse direction. (Refer to...) Figure 8The length direction of the second connecting hole 520 is parallel to the length direction of the horizontal part, that is, the length direction of the second connecting hole 520 is parallel to the longitudinal direction, and the axial direction of the second connecting hole 520 is parallel to the transverse direction. When installing the waterproof cover plate 500, first insert one end of the locking member 700 into the second connecting hole 520, and then insert the other end of the locking member 700 into the vertical part from top to bottom. Then move the waterproof cover plate 500 and the locking member 700 towards the other end of the horizontal part, so that the other end of the locking member 700 is inserted into the other end of the horizontal part, and finally lock the waterproof cover plate 500 onto the linear gap drainage ditch 300 by the locking member 700.

[0034] Understandably, the vertical plate 311 has multiple first connecting holes 3111 distributed longitudinally, and multiple second connecting holes 520 are located at one end of the waterproof cover 500 in the transverse direction. Multiple locking elements 700 are present, each passing through one of the first connecting holes 3111 and the second connecting holes 520, thus locking one end of the waterproof cover 500 onto the linear gap drainage ditch 300. Two linear gap drainage ditches 300 are correspondingly located at both ends of the waterproof cover 500 in the transverse direction. Both ends of the waterproof cover 500 in the transverse direction are locked to the two linear gap drainage ditches 300 respectively by multiple locking elements 700, preventing the waterproof cover 500 from bouncing and providing a certain degree of anti-theft functionality.

[0035] The outer dimensions of one end of the locking member 700 are larger than those of the other end. The outer dimensions of the other end of the locking member 700 are adapted to the widths of the first connecting hole 3111 and the second connecting hole 520, allowing the other end of the locking member 700 to be inserted into the first connecting hole 3111 and the second connecting hole 520, while the outer end of one end of the locking member 700 cannot pass through the first connecting hole 3111 and the second connecting hole 520. This effectively limits the locking member 700 to the vertical plate 311 and the waterproof cover plate 500. The cross-section of one end of the locking member 700 is circular or square, and the cross-section of the other end of the locking member 700 is also circular or square. The locking member 700 can be a bolt or an anchor rod.

[0036] Reference Figure 3 and Figure 6In some embodiments, the waterproof cover 500 includes an outer frame 530, a support plate 540, and a permeable paving layer 550. The outer frame 530 is square, and the inner wall of the outer frame 530 is provided with a U-shaped support portion 531. The outer edge of the lower surface of the support plate 540 is sealed to the support portion 531. The permeable paving layer 550 is disposed on the support plate 540. A U-shaped water guide groove 510 is formed between the inner wall of the outer frame 530 and the end face of the permeable paving layer 550. The support portion 531 of the outer frame 530 supports the support plate 540 and the permeable paving layer 550, which can prevent gaps from appearing between the outer edge of the lower surface of the support plate 540 and the support portion 531.

[0037] The inner wall of the outer frame 530 is sealed to the end face of the support plate 540. The cross-sectional dimension of the space enclosed by the inner wall of the outer frame 530 is larger than the cross-sectional dimension of the permeable pavement layer 550, resulting in gaps between the four inner walls of the outer frame 530 and the four end faces of the permeable pavement layer 550. The four inner walls of the outer frame 530, the upper surface of the support plate 540, and the four end faces of the permeable pavement layer 550 form a U-shaped water channel 510. Alternatively, the inner wall of the outer frame 530 and the end face of the support plate 540 can also have gaps, with the four inner walls of the outer frame 530, the upper surface of the support part 531, the four end faces of the support plate 540, and the four end faces of the permeable pavement layer 550 forming a U-shaped water channel 510. The second connecting hole 520 communicates with the bottom of the water channel 510, allowing rainwater to be drained away from the water channel 510 as much as possible.

[0038] In some embodiments, the outer frame 530 and the support plate 540 are both made of stainless steel. The outer frame 530 and the support plate 540 have high structural strength. The outer frame 530 and the support plate 540 are connected by welding, forming a seal between the outer frame 530 and the support plate 540 to prevent gaps between the outer frame 530 and the support plate 540, thereby preventing rainwater from seeping into the trench 110 through the gaps between the outer frame 530 and the support plate 540.

[0039] The support plate 540 serves to support the permeable pavement layer 550 and the load on it, which is also the load of the sidewalk. In another embodiment, to ensure the load-bearing capacity of the support plate 540, it is made of reinforced stainless steel. Considering both load-bearing capacity and cost savings, a reinforced concrete structure can be installed on the support part 531, and then a stainless steel plate can be installed on the reinforced concrete structure. The four end faces of the stainless steel plate are welded to the four inner walls of the outer frame 530, forming a seal between the four end faces of the stainless steel plate and the four inner walls of the outer frame 530. The permeable pavement layer 550 is made of sidewalk bricks and cement mortar, and has good permeability, allowing rainwater to drain into the drainage channel 510 as quickly and efficiently as possible.

[0040] Reference Figure 6 In some embodiments, the waterproof cover plate 500 has a first sealing component 610 and a second sealing component 620 on its two longitudinal end faces, respectively. The first sealing component 610 and the second sealing component 620 extend laterally and are staggered vertically. The first sealing component 610 on the waterproof cover plate 500 and the second sealing component 620 on the other waterproof cover plate 500 are vertically distributed and abut against each other to form a second sealing structure 600, thereby achieving a seal between two adjacent waterproof cover plates 500. One waterproof cover plate 500 is placed on two first sealing structures 150 on two outer walls 100. Then, another waterproof cover plate 500 is placed on two first sealing structures 150 on two outer walls 100. Then, the other waterproof cover plate 500 is pushed toward one of the waterproof cover plates 500, so that the first sealing component 610 and the second sealing component 620 between the two adjacent waterproof cover plates 500 are vertically distributed and abut against each other.

[0041] The staggered arrangement of the first sealing component 610 and the second sealing component 620 not only improves the waterproof effect of the waterproof cover 500, but also enables the interlocking function between two adjacent waterproof cover 500s, improving the overall integrity of the waterproof cover 500 installation and greatly reducing the likelihood of bouncing caused by the loosening of the waterproof cover 500.

[0042] Reference Figure 6 It should be noted that both the first sealing component 610 and the second sealing component 620 are located on the outer wall of the outer frame 530. The first sealing component 610 is lower than the second sealing component 620. When two adjacent waterproof cover plates 500 are put together, the second sealing component 620 presses on the first sealing component 610, so that a seal is formed between the second sealing component 620 and the first sealing component 610. The first sealing component 610 is lower than the second sealing component 620. The first sealing component 610 and the second sealing component 620 respectively include a first protrusion and a second protrusion extending laterally. The upper surface of the first protrusion and / or the lower surface of the second protrusion are provided with rubber gaskets extending laterally. The outer frame 530, the first protrusion and the second protrusion are all made of stainless steel. A seal is formed between the outer frame 530 and the first protrusion on it, and between the outer frame 530 and the second protrusion on it. When two adjacent waterproof cover plates 500 are put together, the second protrusion is above the first protrusion. There is a rubber gasket between the first protrusion and the second protrusion to ensure the sealing between the first protrusion and the second protrusion, which means ensuring the sealing and waterproofing of the second sealing structure 600.

[0043] Reference Figure 1 and Figure 2In some embodiments, the waterproof cable trench also includes a water collection well 800 located outside the linear slot drainage ditch 300. The drainage channel 321 is connected to the water collection well 800. One end of the second drainage pipe 400 is connected to the drainage channel 321 through the water collection well 800. The water collection well 800 has the function of collecting water. The water collection well 800 collects rainwater and then discharges it into the rainwater well 20 through the second drainage pipe 400. The water collection well 800 facilitates the connection and maintenance of the linear slot drainage ditch 300 and the second drainage pipe 400.

[0044] Reference Figure 3 In some embodiments, a limiting groove 160 extending longitudinally is provided on the outer side of the upper surface of the outer wall 100, and a drainage trough 320 is provided in the limiting groove 160. The limiting groove 160 serves to limit the drainage trough 320. The drainage trough 320 is a sunken structure, which can prevent the vertical plate 311 of the linear gap drainage ditch 300 from protruding too much from the upper surface of the waterproof cover plate 500.

[0045] Reference Figure 5 In some embodiments, a water collection trough 111 is provided at the bottom of the trench 110, and a perforated pipe 210 is provided in the water collection trough 111. The height of the water collection trough 111 is lower than that of other areas of the trench 110, so that rainwater can be discharged more smoothly into the perforated pipe 210 in the water collection trough 111.

[0046] During cable trench construction, following the standard practice for exterior wall 100, when constructing to the top, a limiting groove 160 is reserved to accommodate the linear gap drainage ditch 300. Cement mortar is used to connect the linear gap drainage ditch 300 to the exterior wall 100 as a whole. A water collection trough 111 is constructed at the bottom of the trench 110 where drainage is needed. Perforated pipes 210 are laid flat in the water collection trough 111. A water collection well 800 is installed on the outside of the exterior wall 100, and a first drainage pipe 200 and a second drainage pipe 400 are buried. One end of the first drainage pipe 200 penetrates the exterior wall 100 and connects to the perforated pipe 210, and one end of the second drainage pipe 400 connects to the water collection well 800. Gravel is backfilled into the trench 110. Gravel is added until the perforated pipe 210 is submerged and a sand and gravel layer 120 of a certain height is formed at the bottom of the trench 110; a support 140 is erected and several sets of cables 10 are fixed on the corresponding support 140; sand is backfilled until all the cables 10 are submerged and a sand layer 130 is formed; a first sealing structure 150 is set on the two outer walls 100, and a waterproof cover plate 500 is set on the two first sealing structures 150; the tool for placing the cover plate is inserted into the drainage gap 330 of the linear gap drainage ditch 300 and the locking member 700 is pushed to move, so that the locking member 700 is locked into the other end of the horizontal part or the other end of the second horizontal part, thereby locking the waterproof cover plate 500.

[0047] In drainage and backwashing operations, when rainwater seepage occurs in the upper part of the cable trench, the rainwater permeates along the sand layer 130 and the gravel layer 120, then sequentially enters the perforated pipe 210 and the first drainage pipe 200, finally draining into the rainwater well 20. Due to the relatively large voids in the gravel layer 120, the drainage effect within the cable trench can be improved to some extent. After the cable trench has been in operation for a long time, the impurities inside the sand layer 130 increase, reducing the drainage effect. At this point, the cable 10 can be excavated in sections, and the backwash water pipe connected to the first drainage pipe 200 can be connected. The other end of the drain pipe 200 is connected, and the backwash water will enter the first drain pipe 200, the perforated flower pipe 210, the sand and gravel layer 120 and the sand body layer 130 in sequence. By placing a water collection basin in the sand body layer 130 and a sewage pump in the water collection basin, the backwash water carries impurities into the water collection basin. Then, the sewage pump will discharge the backwash water and impurities collected in the water collection basin, thereby collecting and discharging the impurities in the sand body layer 130. After the backwashing is completed, the cable 10 is buried back in the trench 110 and fixed on the bracket 140.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A waterproof cable trench, characterized in that, include: The trench includes two transversely distributed outer walls, both of which extend longitudinally, forming a trench between the two outer walls. The trench is provided with a gravel layer and a sand layer from bottom to top. The inner wall of the trench is provided with a bracket for supporting the cable. The sand layer is configured to cover the cable and the bracket. Both outer walls are provided with a first sealing structure extending longitudinally. Multiple first drainage pipes are distributed longitudinally, with a perforated flower pipe at one end. The perforated flower pipe is located at the bottom of the trench and covered by the sand and gravel layer. The other end of the first drainage pipe is configured to extend to the rainwater well. At least one set of linear slot drainage ditches, including a drainage cover plate and a longitudinally extending drainage trough, the drainage trough being disposed on the outside of the first sealing structure, the drainage trough being provided with a longitudinally extending drainage trough, the drainage cover plate being disposed on the drainage trough, the drainage cover plate being provided with a plurality of horizontally arranged vertical plates, the vertical plates extending longitudinally, and a drainage slot communicating with the drainage trough being formed between two adjacent vertical plates; Multiple longitudinally distributed second drainage pipes, one end of which is connected to the drainage trough, and the other end of which is configured to extend to the rainwater well; Multiple waterproof cover plates are arranged longitudinally. The two ends of the waterproof cover plates in the transverse direction respectively abut against two first sealing structures. A second sealing structure is provided between two adjacent waterproof cover plates. A water guide groove is provided on the upper surface of the waterproof cover plate, and the water guide groove is connected to the drainage gap.

2. The waterproof cable trench according to claim 1, characterized in that, It also includes a locking component. The vertical plate is provided with a first connecting hole that communicates with the drainage gap, and the waterproof cover is provided with a second connecting hole that communicates with the water guide channel. The first connecting hole, the second connecting hole and the water guide channel can be connected in sequence so that rainwater in the water guide channel can pass through the second connecting hole and the first connecting hole. The locking component can be inserted through the first connecting hole and the second connecting hole to lock the vertical plate and the waterproof cover together.

3. A waterproof cable trench according to claim 2, characterized in that, The first connecting hole includes a vertical part and a horizontal part connected together. The vertical part is opened on the upper surface of the vertical plate, one end of the horizontal part is connected to the lower end of the vertical part, and the length direction of the second connecting hole is parallel to the length direction of the horizontal part.

4. A waterproof cable trench according to claim 1, characterized in that, The overall cross-sectional shape of the drainage trough is U-shaped. Two stepped slots are provided on the two inner walls of the drainage trough in the horizontal direction to accommodate the two ends of the cover plate in the horizontal direction. The two ends of the cover plate in the horizontal direction are respectively located in the two stepped slots.

5. A waterproof cable trench according to claim 1, characterized in that, The waterproof cover plate includes an outer frame, a support plate, and a permeable paving layer. The outer frame is square, and the inner wall of the outer frame is provided with a U-shaped support part. The outer edge of the lower surface of the support plate is sealed to the support part. The permeable paving layer is provided on the support plate, and a U-shaped water guide groove is formed between the inner wall of the outer frame and the end face of the permeable paving layer.

6. A waterproof cable trench according to claim 5, characterized in that, Both the outer frame and the support plate are made of stainless steel. The outer frame and the support plate are connected by welding, forming a seal between them.

7. A waterproof cable trench according to claim 1, characterized in that, The waterproof cover plate has a first sealing component and a second sealing component on its two ends in the longitudinal direction. The first sealing component and the second sealing component extend in the transverse direction and are staggered in the vertical direction. The first sealing component on the waterproof cover plate and the second sealing component on the other waterproof cover plate are distributed vertically and abut against each other to form the second sealing structure.

8. A waterproof cable trench according to claim 1, characterized in that, It also includes a water collection well located outside the linear slotted drainage ditch, the drainage channel being connected to the water collection well, and one end of the second drainage pipe being connected to the drainage channel through the water collection well.

9. A waterproof cable trench according to claim 1, characterized in that, The outer side of the upper surface of the exterior wall is provided with a limiting groove extending in the longitudinal direction, and the drainage trough is located in the limiting groove.

10. A waterproof cable trench according to claim 1, characterized in that, The bottom of the trench is provided with a water collection trough, and the perforated flower pipe is located in the water collection trough.

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