Cable shaft for retaining wall cabling

Abstract

The utility model relates to cable laying technical field, especially a kind of cable vertical shaft for cable laying of retaining wall, cable vertical shaft includes well body and cable laying connecting bridge, the well body has extension section, the extension section is used to insert ground and cable well connection;Cable laying connecting bridge is located at the end of the well body away from the extension section, and the cable laying connecting bridge is used to connect retaining wall.The main purpose of the utility model is to provide a kind of cable vertical shaft for cable laying of retaining wall, to solve the problem of difficult cable laying caused by retaining wall or slope environment.

Description

Technical Field

[0001] This utility model relates to the field of cable laying technology, and in particular to a cable shaft for cable laying in retaining walls. Background Technology

[0002] In the field of 10kV / 0.4kV cable laying, common cable laying methods include road cable duct manholes and cable trays. Road cable duct manholes are typically divided into pedestrian and vehicular types, with their top surface elevation consistent with the road surface, suitable for flat road environments. Cable trays are widely used for cable laying within buildings, employing tray-type trays, L-shaped brackets, and angle iron columns fixed to floors or walls, allowing for horizontal or vertical installation.

[0003] However, existing working wells cannot effectively solve the difficulties in construction and operation and maintenance of cables in retaining wall or slope environments, especially under conditions of large height and slope. There is a lack of a solution that can meet the needs of cable laying while ensuring the convenience of construction and operation and maintenance. Utility Model Content

[0004] The main purpose of this utility model is to propose a cable shaft for cable laying in retaining walls, which aims to solve the problem of cable laying difficulties caused by retaining walls or slope environments.

[0005] To achieve the above objectives, the cable shaft proposed in this utility model includes:

[0006] Well body, the well body having an extension for insertion into the ground and connection to a cable well; and

[0007] A cable laying connecting bridge is provided at the end of the well body away from the extension section, and the cable laying connecting bridge is used to connect the retaining wall.

[0008] In one embodiment of the present invention, the outer peripheral wall of the extension section is provided with a wire passage hole, which is used to connect to the well chamber of the cable well.

[0009] In one embodiment of the present invention, the extension section is provided with a drain pipe that is inclined; the inlet end of the drain pipe is located inside the extension section, and the outlet end of the drain pipe is located outside the extension section.

[0010] In one embodiment of this utility model, the inlet end of the drain pipe is provided with a filter device.

[0011] In one embodiment of this utility model, the outlet end of the drain pipe is provided with a one-way valve.

[0012] In one embodiment of the present invention, the cable shaft further includes a fixed bracket, which is fixedly connected to the shaft body; the fixed bracket extends along the height direction of the cable shaft.

[0013] In one embodiment of this utility model, the outer surface of the cable laying connecting bridge is provided with a protective layer.

[0014] In one embodiment of the present invention, the cable laying connecting bridge includes at least two connecting straight sections and a corrugated pipe section, with each end of the corrugated pipe section connected to one of the connecting straight sections.

[0015] In one embodiment of the present invention, the well body has two concrete slabs, which are respectively disposed at the top and bottom of the well body.

[0016] In one embodiment of the present invention, the cable shaft further includes an inspection door, which is located on the side of the shaft body opposite to the cable laying connecting bridge.

[0017] In this technical solution, the core structure of the cable shaft used for cable laying in retaining walls includes the shaft body and the cable laying connecting bridge. The shaft body has an extension section that inserts into the ground and connects to the cable shaft, thus achieving a physical connection between the shaft and the cable shaft and facilitating cable entry or exit. The cable laying connecting bridge is located at the end of the shaft away from the extension section. Its main function is to connect to the retaining wall, ensuring that the cable can extend from the shaft into or above the retaining wall, thereby completing the cable laying task. The combination of the shaft body and the connecting bridge solves common construction difficulties and cable height differences encountered in cable laying in retaining walls, while providing stable structural support to ensure the safety and reliability of cable laying. The insertion design of the extension section allows the shaft to adapt to different ground conditions, while the connecting bridge enhances the connection strength between the shaft and the retaining wall, providing convenience and security for cable laying. This structure not only meets the basic requirements of cable laying but also improves the applicability and practicality of the shaft through reasonable layout and functional design. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a structural cross-sectional view of an embodiment of the cable shaft for cable laying in retaining walls proposed in this utility model;

[0020] Figure 2 for Figure 1 A structural sectional view from another direction.

[0021] Explanation of icon numbers:

[0022] 10. Well body; 11. Extension section; 20. Cable laying connecting bridge; 21. Connecting straight section; 22. Corrugated pipe section; 30. Fixed bracket; 40. Concrete slab; 50. Inspection door; 60. Retaining wall; 70. Cable well.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] Please see Figure 1The cable shaft proposed in this utility model includes a shaft body 10 and a cable laying connecting bridge 20. The shaft body 10 has an extension section 11, which is used to insert into the ground and connect with the cable shaft 70. The cable laying connecting bridge 20 is located at the end of the shaft body 10 away from the extension section 11, and the cable laying connecting bridge 20 is used to connect the retaining wall 60.

[0028] In this technical solution, the cable shaft used for cable laying on the retaining wall 60 has a core structure including a shaft body 10 and a cable laying connecting bridge 20. The shaft body 10 has an extension section 11, which is inserted into the ground and connects to the cable shaft 70, thereby achieving a physical connection between the shaft and the cable shaft 70 and facilitating the introduction or exit of cables. The cable laying connecting bridge 20 is located at the end of the shaft body 10 away from the extension section 11. Its main function is to connect the retaining wall 60, ensuring that the cable can extend from the shaft into or above the retaining wall 60, thus completing the cable laying task. The combination of the shaft body 10 and the connecting bridge solves common construction difficulties and cable height differences in cable laying on the retaining wall 60, while providing stable structural support to ensure the safety and reliability of cable laying. The insertion design of the extension section 11 allows the shaft to adapt to different ground conditions, while the connecting bridge enhances the connection strength between the shaft and the retaining wall 60, providing convenience and protection for cable laying. This structure not only meets the basic requirements for cable laying, but also enhances the applicability and practicality of the shaft through reasonable layout and functional design.

[0029] In one embodiment, the main structure of the shaft consists of four reinforced concrete columns, each measuring 200×200mm. Each column contains four No. 14 steel longitudinal bars, along with multiple stirrups (circular reinforcing bars) along its height. Each stirrup has a diameter of 8mm, and any two stirrups are spaced 200mm apart. The longitudinal bars are anchored 450mm into the lower concrete slab. The concrete strength grade is C25. The shaft walls are constructed using Mu10 lime-sand bricks and M7.5 cement mortar to ensure the shaft body 10 has high compressive strength and good durability, adapting to different environmental conditions. The mortar has good adhesion and water retention, ensuring the stability and waterproofing of the walls. An extension 11 at the bottom of the shaft is inserted into the ground to connect with a cable well 70 below ground for cable routing.

[0030] The cable laying connecting bridge 20 is located at the end of the well body 10 furthest from the extension section 11. The cable laying connecting bridge 20 is used to connect to the retaining wall 60. Specifically, the cable is pulled out from the underground cable working well through the extension section 11, then enters the internal space of the well body 10 through the extension section 11, and is then led out from the cable laying connecting bridge 20. This ensures that the cable can be smoothly laid inside or above the retaining wall 60. This design not only solves the construction problem of cable laying on the retaining wall 60, but also ensures the stability and reliability of cable laying through a reasonable structural layout, while providing convenience for subsequent operation and maintenance. The interior space of the shaft is spacious, meeting the simultaneous laying requirements of multiple high- and low-voltage cables. The reserved inspection door 50 facilitates daily inspection and maintenance by operation and maintenance personnel, further improving the practicality and maintainability of the shaft.

[0031] Specifically, extension section 11 is provided with a cable passage hole, which is located on the outer peripheral wall of extension section 11 and close to the side of cable well 70. The cable passage hole connects to the well chamber of cable well 70, ensuring that the cable can directly enter the vertical shaft from the well chamber. The size of the cable passage hole is slightly larger than the outer diameter of the cable to provide sufficient space and prevent damage to the cable during passage. A sealant or rubber sealing ring is provided on the inner peripheral wall of the cable passage hole to prevent moisture and impurities from entering the vertical shaft, ensuring the waterproof performance of the vertical shaft. It is understood that the number of cable passage holes may be one or more, depending on the number of cables and laying requirements, to meet the requirements of different scales of cable laying. Through the above design, the cable passage hole not only enables smooth cable entry and exit but also enhances the waterproof performance of the vertical shaft, ensuring the safety and reliability of cable laying.

[0032] In one embodiment, the extension section 11 is provided with a drain pipe that is inclined. The inlet end of the drain pipe is located inside the extension section 11, and the outlet end of the drain pipe is located outside the extension section 11. Specifically, the inlet end of the drain pipe is arranged higher than the outlet end. The inclination angle of the drain pipe is between 4% and 6%. It is understood that in the field of building drainage, the inclination angle of the drain pipe is usually expressed as a percentage. An inclination angle of 4% means that the height of the drain pipe changes by 4 units for every 100 units of horizontal length. Similarly, an inclination angle of 6% means that the height changes by 6 units for every 100 units of horizontal length. This ensures that the water can be discharged smoothly and avoids water accumulation. At this angle, sufficient gravity can be provided to allow the water to flow naturally, while also reducing the possibility of pipe blockage.

[0033] Furthermore, a filter device is installed at the inlet end of the drain pipe. The filter device can take various forms, such as a filter screen or a filter cover. The appropriate filter material and structure are selected according to the specific drainage needs and environmental conditions. By installing a filter device at the inlet end of the drain pipe, debris can be effectively prevented from entering the drain pipe, avoiding blockage and ensuring that the drain pipe can work continuously and effectively.

[0034] In one embodiment, the outlet end of the drain pipe is equipped with a one-way valve. Through the automatic opening and closing function of the one-way valve, it is ensured that water can only be discharged from inside the shaft, while external water cannot flow back in, thereby preventing external water from entering the shaft.

[0035] In one embodiment of this utility model, please refer to Figure 1 and Figure 2 The cable shaft also includes a fixed support 30, which is fixedly connected to the shaft body 10. The fixed support 30 extends along the height direction of the cable shaft. Specifically, the fixed support 30 includes multiple L-shaped hot-dip galvanized angle steels, each angle steel having a length of 75mm and a thickness of 5mm. Any two L-shaped hot-dip galvanized angle steels are horizontally welded or anchored to the inner wall of the shaft body 10 at equal intervals of 500mm to form a continuous support track. The surface of the angle steel is hot-dip galvanized, which can resist the corrosion of the metal by the humid environment inside the shaft and extend its service life. The support has a hole design to facilitate cable binding or clipping. The connection between the L-shaped hot-dip galvanized angle steel and the shaft body 10 adopts chemical anchor bolts or pre-embedded steel plate welding method to ensure the structural stability under the action of lateral soil pressure of the retaining wall 60 or cable traction force.

[0036] To improve the corrosion resistance of the cable laying connector 20, a protective layer is provided on the outer surface of the cable laying connector 20. Specifically, in one embodiment, the outer surface of the cable laying connector 20 is coated with materials such as epoxy coating, polyester coating, or baking paint coating. These coatings can effectively isolate corrosive media and prevent the metal surface from rusting. In another embodiment, a plastic coating, such as polyvinyl chloride (PVC) or polyethylene (PE), is sprayed onto the outer surface of the cable laying connector 20. This coating not only has good corrosion resistance but also provides a certain degree of mechanical protection.

[0037] Furthermore, the cable laying connecting bridge 20 includes at least two connecting straight sections 21 and one corrugated pipe section 22. Each end of the corrugated pipe section 22 is connected to a connecting straight section 21. Specifically, the connecting straight sections 21 are used to connect the corrugated pipe section 22, the shaft, and the retaining wall 60 to ensure the stability and rigidity of the entire connecting bridge. The corrugated pipe section 22 is used to connect the two connecting straight sections 21. The corrugated pipe section 22 can be made of metal or plastic to give the cable laying connecting bridge 20 good flexibility and stretchability. By setting the corrugated pipe section 22, the cable laying connecting bridge 20 can adapt to the settlement or displacement of the retaining wall 60 and reduce stress damage to the cable caused by the deformation of the wall.

[0038] In one embodiment of this utility model, please refer to Figure 1 The well body 10 has two concrete slabs 40, which are respectively located at the top and bottom of the well body 10. The area of ​​the bottom concrete slab 40 is larger than that of the well body 10, thus providing a stable foundation effect. In this embodiment, the dimensions of the bottom concrete slab 40 are 1600×2000×250mm. Reinforcing bars are installed inside the concrete slab 40, each with a diameter of 12mm and a spacing of 150mm between two bars. The thickness of the top concrete slab 40 is 80mm. Reinforcing bars are arranged in both directions (longitudinal and transverse) of the concrete slab 40, each with a diameter of 8mm and a spacing of 200mm between two bars. The reinforcement design enhances the crack resistance of the slab and prevents cracks caused by external soil pressure or settlement. This design ensures the structural stability and crack resistance of the shaft. At the same time, the top C25 reinforced concrete slab 40 can also effectively prevent rainwater infiltration, and the bottom C25 reinforced concrete slab 40 is connected to the ground to ensure the stability of the shaft.

[0039] In one embodiment of this utility model, please refer to Figure 1 The cable shaft also includes an inspection door 50, which is located on the side of the shaft body 10 facing away from the cable laying connecting bridge 20. This allows maintenance personnel to easily enter the shaft for inspection and maintenance work, while avoiding interference with the cable laying connecting bridge 20.

[0040] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A cable shaft for cable laying in retaining walls, characterized in that, The cable shaft includes: A well body (10) having an extension (11) for insertion into the ground and connection to a cable well; and A cable laying connecting bridge (20) is provided at the end of the well body (10) away from the extension section (11), and the cable laying connecting bridge (20) is used to connect the retaining wall.

2. The cable shaft for cable laying in retaining walls as described in claim 1, characterized in that, The outer peripheral wall of the extension section (11) is provided with a wire passage hole, which is used to connect to the well chamber of the cable well.

3. The cable shaft for cable laying in retaining walls as described in claim 1, characterized in that, The extension section (11) is provided with a drain pipe that is inclined; the inlet end of the drain pipe is located inside the extension section (11), and the outlet end of the drain pipe is located outside the extension section (11).

4. The cable shaft for cable laying in retaining walls as described in claim 3, characterized in that, The inlet end of the drain pipe is equipped with a filter device.

5. The cable shaft for cable laying in retaining walls as described in claim 3, characterized in that, The outlet end of the drain pipe is equipped with a one-way valve.

6. The cable shaft for cable laying in retaining walls as described in any one of claims 1 to 5, characterized in that, The cable shaft also includes a fixed bracket (30), which is fixedly connected to the shaft body (10); the fixed bracket (30) extends along the height direction of the cable shaft.

7. The cable shaft for cable laying in retaining walls as described in claim 6, characterized in that, The outer surface of the cable laying connecting bridge (20) is provided with a protective layer.

8. The cable shaft for cable laying in retaining walls as described in claim 7, characterized in that, The cable laying connecting bridge (20) includes at least two connecting straight sections (21) and a corrugated pipe section (22), with each end of the corrugated pipe section (22) connected to one of the connecting straight sections (21).

9. The cable shaft for cable laying in retaining walls as described in claim 1, characterized in that, The well body (10) has two concrete slabs (40), which are respectively located at the top and bottom of the well body (10).

10. The cable shaft for cable laying in retaining walls as described in claim 1, characterized in that, The cable shaft also includes an inspection door (50), which is located on the side of the shaft body (10) facing away from the cable laying connecting bridge (20).

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