Split type cable trench

Abstract

The invention relates to a split type cable trench which comprises a bottom plate, two side walls, a cover plate and a cable rack, the two side walls are located on the left side and the right side of the bottom plate respectively and extend front and back, the cover plate and the cable rack extend in the front-back direction, the cable rack is located in a containing cavity formed by the two side walls and the bottom plate, and the cover plate covers the top opening of the containing cavity. Each side wall comprises rigid supporting columns and flexible walls which extend in the front-back direction, are alternately arranged and are connected, the rigid supporting columns of the two side walls are oppositely arranged in the left-right direction, and the cable rack comprises two inclined supporting rods which are arranged in an X shape in a crossed mode and a transverse supporting rod which extends in the left-right direction; the upper end and the lower end of each inclined supporting rod are correspondingly supported on the upper portions and the lower portions of the rigid supporting columns on the different side walls respectively, and the transverse supporting rod is arranged on the two inclined supporting rods. The device has good deformation adaptability and strong vibration reduction capability, and can bear extreme traffic load in a soft soil area.

Description

Technical Field

[0001] The invention belongs to the technical field of cable installation, and in particular relates to a split cable trench. Background Art

[0002] With the acceleration of urbanization in coastal areas, urban power grid construction has gradually shifted from traditional overhead lines to underground cable trenches. A cable trench is a protective structure used for laying cables, generally including a bottom plate, side walls, and a cover plate on the top. Specific examples include the Chinese utility model patent "A Cable Trench" with application number CN202120529375.2 (authorization announcement number CN214755431U), the Chinese utility model patent "High-strength Lightweight Anti-corrosion Concrete-based Prefabricated Assembled Cable Trench" with application number CN201220708780.1 (authorization announcement number CN202989953U), and other disclosed structures.

[0003] If the geological conditions of the deep soft soil layer in the area are extremely unfavorable, showing characteristics such as "high groundwater level, high soil moisture content, strong compressibility, low strength, high sensitivity, and poor permeability", the shallow buried cable trench and the internal cables will be easily severely damaged under the impact of heavy traffic loads, especially under the instantaneous high-intensity loads of large transport vehicles and cement mixers, which will have an adverse impact on the safety and reliability of the urban power grid. The main reasons why the structural design of the existing cable trench is prone to damage under the above conditions are as follows: 1. The traditional integral cable trench design concentrates all lateral loads on the side walls of the cable trench. Large transport vehicles and cement mixers generally avoid the cable trench during operation. However, in soft soil areas, when instantaneous high-intensity loads are applied to the area near the cable trench, the soil on the side of the cable trench will undergo significant lateral deformation, causing the side walls of the cable trench to be easily locally damaged under the compression of the soil. Once a side wall is damaged, the collateral effect caused by the damage to the side wall will cause the entire cable trench to deform significantly, resulting in a large number of cables being damaged, making repairs very difficult. This type of overall damage usually requires the dismantling of the entire cable trench, which is a common problem of integral cable trenches with high renovation costs and long construction periods.

[0004] 2. Under the instantaneous impact of extreme traffic loads, the existing cable trench has insufficient vibration reduction capacity, and the cover and side walls are prone to brittle fracture and failure. Especially for the side wall components, since the traditional cable rack is fixed on the side wall, the deformation of the side wall will directly disturb the cable rack, causing the cable to fall or even be damaged, affecting the operation safety. In addition, the deadweight of the cable rack and cables further increases the lateral load on the side wall and weakens the integrity of the side wall. Therefore, the side wall of the cable trench in soft soil areas is very prone to deformation and instability, increasing the risk of structural damage.

[0005] 3. The existing cable laying rack is an auxiliary component of the cable trench. Its design itself is not stable and is generally fixed on the inner wall of the cable trench, which will weaken the bearing system of the cable trench.

[0006] 4. The space inside the cable trench is narrow, and it is extremely inconvenient for workers to enter and operate. Once the cable is damaged, the maintenance process is cumbersome and time-consuming. Due to the intricate layout of the cables, it is not only difficult for workers to avoid adjacent cables when repairing in a limited space, but also there is a lack of sufficient operating space, which increases the difficulty of construction. In addition, the narrow space limits the layout of escape routes and emergency facilities. Once an emergency such as electric shock or equipment failure occurs, the safety of workers is difficult to guarantee, which increases the potential safety hazards during the construction process.

[0007] In summary, there is an urgent need to develop a new cable trench structure that has good deformation adaptability, strong vibration reduction ability, is easy to maintain, and can withstand extreme traffic loads in soft soil areas. Summary of the invention

[0008] The first technical problem to be solved by the present invention is to provide a split cable trench with good deformation adaptability and strong vibration reduction ability in view of the current status of the above-mentioned prior art, so as to be able to withstand extreme traffic loads in soft soil areas.

[0009] The second technical problem to be solved by the present invention is to provide a split cable trench which is convenient for cable maintenance in view of the current status of the prior art.

[0010] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a split cable trench, comprising: The bottom plate, with the length direction of the bottom plate being the front-to-back direction, and the width direction of the bottom plate being the left-to-right direction; Two side walls extending in the front-to-back direction are respectively arranged vertically on the bottom plate, one on the left and one on the right, and the two side walls and the bottom plate together form a cavity with an open top; A cover plate extending in the front-to-back direction and covering the top opening of the cavity; A cable rack is arranged in the cavity; Features: The side wall includes rigid support columns and flexible walls that are alternately arranged and connected along the front-to-back direction, and the rigid support columns of the two side walls are arranged opposite to each other, one on the left and one on the right; The cable rack comprises: Two diagonal braces are arranged crosswise in an X shape; wherein, for each diagonal brace, the upper end and the lower end of the diagonal brace are respectively supported on the upper part and the lower part of the rigid support column of different side walls; A horizontal support rod extending in the left-right direction is arranged on the two diagonal support rods and is used to support the cables.

[0011] The flexible wall is made of flexible material, and is not easy to break due to deformation in the process of resisting the side wall soil load, causing water leakage or even complete destruction inside the cable trench, thereby significantly reducing the possibility of water seepage caused by side wall cracking and improving the protection performance inside the cable trench. The material of the flexible wall can be selected in many ways, such as existing flexible foam concrete, fiber-reinforced geotextile reinforcement system, polymer matrix mixed fiber material, etc.

[0012] The flexible wall in the side wall of the present invention mainly bears deformation, while the rigid support column plays a role in ensuring the stability of the overall structure. The cover plate is arranged on the top of the flexible wall and the rigid support column, which effectively improves the integrity of the cable trench and the cooperative working ability of various components, and enhances the stability and impact resistance of the entire system.

[0013] At the same time, in addition to supporting the cables, the cable rack of the present invention, whose ends are supported on the rigid support columns, can also bear the external load together with the rigid support columns, further enhancing the stability and structural reliability of the cable trench. Under the action of extreme traffic loads, the various components of the cable trench can effectively share the load and reduce the stress concentration of the cable trench structure.

[0014] Furthermore, the cover plate, bottom plate, cable rack, flexible wall and other components of the present invention can be assembled after mass production, thereby improving construction efficiency and reducing construction period and cost.

[0015] In order to better constrain the end of the diagonal brace rod, preferably, the upper end of the rigid support column extends into the cavity to form a first clamping angle in an inverted L shape for supporting the upper end of the diagonal brace rod; The lower part of the rigid support column and the contact position with the bottom plate extend toward the inside of the cavity to form an L-shaped second clamping angle for supporting the lower end of the diagonal support rod.

[0016] The cross-sectional shape of the rigid support column can be designed in various forms, such as arc, rectangle, composite shape, etc.

[0017] Preferably, the cross-sectional area of ​​the rigid support column increases gradually from top to bottom, thereby improving the soil retaining capacity of the rigid support.

[0018] In the above solution, in order to avoid water accumulation in the cavity, preferably, the upper plate surface of the bottom plate is an inclined surface with a lower middle and higher left and right sides, and a drainage hole penetrating the thickness of the plate is provided in the middle of the bottom plate, so that the water in the cavity can be discharged from the lower drainage hole.

[0019] Furthermore, notches are provided on the left and right sides of the bottom plate at positions corresponding to the rigid support columns, so that the corresponding rigid support columns can be constrained therein. The shape of the notches matches the shape of the rigid support columns, so that a tight connection between the bottom plate and the rigid support columns can be achieved.

[0020] Furthermore, the lower end of the rigid support column is located at the lower side of the base plate, so that in actual application, the lower end of the rigid support column is deeper than the buried depth of the base plate, and the larger embedded depth of the rigid support column further improves the stability of the rigid support column.

[0021] In the above solutions, preferably, there are at least two cross braces, each of which is arranged at intervals in the vertical direction, and at least one of the two ends of the cross brace is in contact with the inner side surfaces of the corresponding rigid support columns of the two side walls, respectively. Thus, the cross braces can support the cables, and the cross braces and the diagonal braces can bear the external load together with the rigid support columns, further enhancing the stability and reliability of the bearing system.

[0022] If only one of the two ends of a horizontal brace contacts the inner side surfaces of the corresponding rigid support columns of the two side walls, then preferably, the horizontal brace is located at the lower side of the central intersection of the two diagonal braces. The reason is that the pressure of the lower soil is relatively large, and the load borne by the lower part of the side wall is relatively large. The horizontal brace located at the lower side of the central intersection of the diagonal braces can share the external load with the rigid support column.

[0023] To further solve the second technical problem, preferably, the intersection of the two diagonal braces is connected by a rotating shaft extending forward and backward, and the length of each diagonal brace is adjustable; each transverse brace is correspondingly arranged on the upper and lower sides of the rotating shaft, and the length of each transverse brace is adjustable. Therefore, when the cable trench is partially damaged, if the cable has enough space to move, the diagonal brace can be retracted to lift the cable rack to the ground as a whole, so that workers can inspect it easily; if the space for the cable to move is insufficient, after determining the location of the damaged cable, the space where the damaged cable is located can be expanded by rotating the diagonal brace, adjusting the angle between the two diagonal braces and the length of the transverse brace, so that workers can inspect it easily, while not affecting other intact cables.

[0024] Furthermore, the cable rack of the present invention can match cavities of different sizes by rotating and adjusting the length of two oblique support rods and adjusting the length of the transverse support rods, and has wider adaptability and flexibility.

[0025] In order to achieve the adjustable length of the diagonal brace, the diagonal brace is a telescopic structure, and the length can be fixed manually. The telescopic structure can have various forms, such as the existing sleeve telescopic structure, spiral telescopic structure, gear rack telescopic structure, spring lock telescopic structure, etc.

[0026] Similarly, to achieve adjustable length of the transverse brace, reference may be made to the structural design of the diagonal brace.

[0027] In order to make the length of the cross brace adjustable without affecting the connection between the cross brace and the diagonal brace, further, each cross brace includes a first rod body and a second rod body, the first end of the first rod body and the first end of the second rod body are respectively rotatably connected to the corresponding diagonal brace and the rotation axis extends forward and backward, the second end of the first rod body and the second end of the second rod body are constrained together in a detachable manner, so that the first rod body and the second rod body are placed horizontally between the two diagonal braces as a whole, and the length of at least one of the first rod body and the second rod body at the same height is adjustable; At least one of the horizontal braces also includes two third rods with adjustable lengths, the first ends of the two third rods are respectively rotatably connected to the corresponding diagonal braces and the rotation axis extends forward and backward, and the second ends of the two third rods are free ends for contacting the inner side surfaces of the rigid support columns of the corresponding two side walls. In this way, the length adjustment can be achieved by rotating, telescoping and connecting the rods, which is easy to operate.

[0028] The rotating connection structure between the two diagonal struts and the rotating connection structure between the rod body forming the transverse strut and the diagonal strut in the present invention can refer to existing structural designs, such as double universal joint design, coaxial bearing design, dual axis design, gear-type synchronous rotation design, etc.

[0029] The diagonal braces and the transverse braces of the present invention are preferably rigid components.

[0030] The second end of the first rod body and the second end of the second rod body of the present invention can be detachably connected by existing methods such as snap connection.

[0031] In the above solutions, preferably, the cover plate has a vibration reduction layer located at the upper part and a rigid support layer located at the lower part. The rigid support layer is arranged near the top opening of the cavity. Therefore, the cover plate of the present invention can not only effectively absorb and buffer vibration, but also effectively bear the upper load, preventing the cable trench from being damaged under the action of instantaneous extreme cyclic load.

[0032] Compared with the prior art, the advantages of the present invention are: Firstly, in the split cable trench of the present invention, the side walls located on the left and right sides of the bottom plate of the cable trench include rigid support columns and flexible walls alternately arranged and connected in the front-to-back direction. Since the flexible walls are made of flexible materials, they are not prone to rupture due to deformation in the process of resisting the soil load on the side walls, resulting in water leakage or even complete damage inside the cable trench. This significantly reduces the possibility of water seepage in the cable trench due to cracking of the side walls and improves the protective performance inside the cable trench.

[0033] Secondly, the flexible wall in the side wall of the present invention mainly bears deformation, while the rigid support column plays a role in ensuring the stability of the overall structure. By having the cover plate cover the top of the flexible wall and the rigid support column, the integrity of the cable trench and the collaborative working ability of each component are effectively improved, and the stability and impact resistance of the entire system are enhanced.

[0034] At the same time, in addition to supporting the cables, the cable rack of the present invention, whose ends are supported on the rigid support columns, can also bear the external load together with the rigid support columns, further enhancing the stability and structural reliability of the cable trench. Under the action of extreme traffic loads, the various components of the cable trench can effectively share the load and reduce the stress concentration of the cable trench structure.

[0035] Furthermore, the cover plate, bottom plate, cable rack, flexible wall and other components of the present invention can be assembled after mass production, thereby improving construction efficiency and reducing construction period and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the assembled cover plate, side wall and cable rack of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure after the cover plate, side wall and bottom plate of an embodiment of the present invention are assembled; Figure 3 It is a schematic diagram of the partial structure of the bottom plate of an embodiment of the present invention; Figure 4 It is a schematic diagram of the partial structure of the bottom plate and the side wall of an embodiment of the present invention; Figure 5 A schematic structural diagram of a cover plate according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a cable rack according to an embodiment of the present invention (each rod body is combined into a horizontal brace rod); Figure 7 Schematic diagram of the structure of a cable rack according to an embodiment of the present invention (each cross brace is disassembled into a plurality of rod bodies). DETAILED DESCRIPTION

[0037] The present invention is further described in detail below with reference to the accompanying drawings.

[0038] like Figures 1 to 7 As shown, a preferred embodiment of a split cable trench of the present invention is shown, and the split cable trench includes a bottom plate 1, a side wall 2, a cover plate 3 and a cable rack 4.

[0039] The length direction of the bottom plate 1 is the front-to-back direction, and the width direction of the bottom plate 1 is the left-to-right direction. The upper plate surface of the bottom plate 1 is an inclined surface with a lower middle and higher left and right sides, and a drainage hole 11 penetrating the thickness of the plate is provided in the middle of the bottom plate 1. There are multiple drainage holes 11 and they are spaced apart in the front-to-back direction.

[0040] Two side walls 2 extending in the front-to-back direction are arranged vertically on the bottom plate 1, one on the left and one on the right, and a cavity C with an open top is formed between the two side walls 2 and the bottom plate 1. Each side wall 2 is composed of rigid support columns 21 and flexible walls 22 that are alternately arranged and connected in the front-to-back direction. The flexible wall 22 can be made of existing flexible foam concrete, fiber-reinforced geotextile reinforcement system, polymer matrix mixed fiber material, etc. The rigid support columns 21 of the two side walls 2 are arranged opposite to each other, one on the left and one on the right, and are located on the left and right sides of the bottom plate 1 and corresponding to the positions of each rigid support column 21. Figure 3 , 4 As shown. The shape of the notch 12 is a rectangle consistent with the cross-sectional shape of the corresponding rigid support column. The rigid support column 21 is constrained in the corresponding notch 12, and the lower end of the rigid support column 21 is located on the lower side of the base plate 1, so that the position of the lower end of the rigid support column 21 is deeper than the buried depth of the base plate 1 in the ground in actual application, so as to improve the stability of the rigid support column 21. In this embodiment, the number of rigid support columns 21 and flexible walls 22 forming each side wall 2 can be designed according to the length of the cable trench. At the same time, the cross-sectional area of ​​each rigid support column 21 gradually increases from top to bottom, and the upper end of each rigid support column 21 extends into the cavity to form an inverted L-shaped first clamping angle 211, and the lower part of each rigid support column 21 The contact position with the base plate 1 extends into the cavity to form an L-shaped second clamping angle 212.

[0041] In this embodiment, the rigid support column 21 is a cast-in-place concrete column, and the rigid support column 21 and the flexible wall 22 of each side wall 2 are not completely rigidly connected, that is, the connection between the rigid support column 21 and the flexible wall 22 allows a certain degree of deformation when subjected to force, but it is not completely free to move. This connection method is between the rigid connection and the flexible connection and has a certain degree of rotational rigidity. All component connections are sealed and waterproofed. Figure 1 , 2 As shown, the cover plate 3 extending in the front-to-back direction is simultaneously covered on the top of the rigid support column 21 and the flexible wall 22 forming the two side walls 2, so as to close the top opening of the cavity C. At the same time, the cover plate 3, the rigid support column 21 and the flexible wall 22 form a whole to jointly bear the external load. Figure 5 As shown, the cover plate 3 has a vibration-damping layer 31 located at the upper part for absorbing and buffering vibrations and a rigid support layer 32 located at the lower part for resisting the upper load. The vibration-damping layer 31 can adopt existing buffering and vibration-damping materials, and the rigid support layer 32 is arranged near the top opening of the cavity C.

[0042] like Figure 1 , 6As shown in Figures 7 and 8, the cable rack 4 is arranged in the cavity C. The cable rack 4 includes a rigid diagonal support rod 41 and a horizontal support rod 42. There are two diagonal support rods 41, which are tilted upward from left to right and tilted upward from right to left, respectively. The central parts of the two diagonal support rods 41 are arranged in an X shape, and the upper ends of the two diagonal support rods 41 are respectively supported in the first clamping angle 211 of the upper ends of the rigid support columns 21 corresponding to the two side walls 2, and the lower ends of the two diagonal support rods 41 are respectively supported in the second clamping angle 212 of the contact position between the rigid support columns 21 of the two side walls 2 and the bottom plate 1. At the same time, the central intersection of the two diagonal support rods 41 is rotatably connected by a rotating shaft 411 extending in the front-to-back direction, so that the angle between the two diagonal support rods 41 is adjustable. The length of each diagonal support rod 41 is adjustable. Specifically, each diagonal support rod 41 is a telescopic structure, and the length can be fixed manually. The telescopic structure can be designed in various forms, such as sleeve telescopic design, spiral telescopic design, gear rack telescopic design, and spring lock telescopic design, etc. Therefore, the ends of the two diagonal support rods 41 can be supported in a cavity of any height and width to adapt to a cable trench of any size.

[0043] There are four horizontal braces 42 extending in the left-right direction, two of which are arranged one above the other at intervals on the upper part of the two diagonal braces 41, and the other two are arranged one above the other at intervals on the lower part of the two diagonal braces 41, for supporting cables. In this embodiment, the horizontal braces 42 located at the upper and lower parts of the diagonal braces 41 are arranged symmetrically with the rotating shaft 411 as the center. In this embodiment, the two horizontal braces 42 located at the upper part of the diagonal braces 41 are used as an example for explanation, and the two horizontal braces 42 are recorded as the first horizontal brace located on the upper side and the second horizontal brace located on the lower side of the first horizontal brace, as follows: like Figure 6 , 7 As shown, the first cross brace is located between the two diagonal braces 41 and is arranged in a triangle with the two diagonal braces 41. The first cross brace includes a first rod body 421 and a second rod body 422. The first end of the first rod body 421 and the first end of the second rod body 422 are respectively rotatably connected to the corresponding diagonal braces 41 (the rotational connection positions of the first and second rod bodies and the diagonal braces 41 are at the same height) and the rotation axis extends along the front-to-back direction. The second end of the first rod body 421 and the second end of the second rod body 422 are both free ends and can be detachably constrained together by means of clamping, etc., so that the first rod body 421 and the second rod body 422 are placed horizontally between the two diagonal braces 41 as a whole, and at least one of the first rod body 421 and the second rod body 422 at the same height can be adjusted in length. The length adjustment method refers to the telescopic structure design of the diagonal brace 41, which will not be described here.

[0044] The middle structure of the second cross brace is the same as the first cross brace, which is placed horizontally between the two diagonal braces 41 and arranged in a triangle with the two diagonal braces 41. The middle structure also includes a first rod body 421 and a second rod body 422. The telescopic structure of the first rod body 421 and the second rod body 422 and the connection structure between the diagonal braces are the same as the first cross brace, which will not be described in detail here. The left and right sides of the second cross brace also have third rod bodies 423 with adjustable lengths. The first ends of the two third rod bodies 423 are respectively rotatably connected with the corresponding diagonal braces 41 (the rotational connection position of the third rod body 423 and the diagonal brace 41 is at the same height as the rotational connection position of the first and second rod bodies of the second cross brace and the diagonal brace 41), and the rotation axis extends along the front-to-back direction. The second ends of the two third rod bodies 423 are free ends, which are used to contact the inner side surfaces of the rigid support columns 21 of the corresponding two side walls 2. In this embodiment, the rotation connection structure between the third rod body 423 and the diagonal support rod 41 can be in various forms, such as the existing mechanical locking rotation design, friction plate rotation design, etc. The above rotation fixing design can make the third rod body 423 in a horizontal state extending in the left and right direction, so as to achieve the laying of cables. The horizontal support rod and the diagonal support rod in contact with the rigid support column 21 enable the cable rack of this embodiment to bear the external load together with the rigid support column 21, further enhancing the stability of the bearing system.

[0045] The number of the cable racks 4 of this embodiment can be designed according to actual conditions. The cable racks 4 are arranged in the cavity at intervals along the front-to-back direction and cooperate with the corresponding rigid support columns 21 .

[0046] The split cable trench of the present invention has the following beneficial effects: Stability of the load-bearing system and deformation concentration of the flexible side wall: The split design of the present invention ensures the stability of the rigid support column 21, thereby ensuring that the flexible wall 22 mainly bears the deformation, while the rigid support column 21 plays a role in ensuring overall stability. The cover plate 3 is tightly fastened to the upper part of the flexible wall and the rigid support column, effectively improving the integrity and collaborative working ability of the load-bearing system, and enhancing the stability and impact resistance of the system.

[0047] Enhanced stability of the load-bearing system: The cable rack of the present invention is incorporated into the cable trench load-bearing system. The cable rack bears the external load through the retractable diagonal braces, transverse braces and rigid support columns, further enhancing the stability and reliability of the load-bearing system. Under extreme traffic loads, the system can effectively share the load, reduce stress concentration in the cable trench structure, and thus improve safety.

[0048] 3. Freely adjustable cable rack design: When the cable trench is partially damaged, if there is enough space for the cable to move, the cable rack can be lifted to the ground as a whole by rotating and retracting the diagonal braces to facilitate maintenance by workers. If there is insufficient space for the cable to move, after determining the location of the damaged cable, the space for the damaged cable can be expanded by adjusting the angle between the two diagonal braces and the horizontal brace to facilitate subsequent maintenance without affecting other intact cables.

[0049] 4. The telescopic rigid cable rack has strong adaptability: The telescopic rigid cable rack can be flexibly adjusted through the rotation design and the telescopic design of the retractable symmetrical diagonal brace, ensuring that the cable rack can be firmly clamped inside the cable trench of any height and width, so that it is suitable for cable trenches of different sizes, providing a wider range of adaptability and flexibility.

[0050] 5. Vibration-damping cover plate: The cover plate of the present invention can not only effectively absorb and buffer vibration, but also resist the impact of upper loads, preventing the cable trench from cracking and damage under instantaneous extreme cyclic loads.

[0051] 6. Flexible wall design: The flexible wall of the cable trench of the present invention has good ductility and is not easy to crack, thereby significantly reducing the possibility of water seepage caused by cracking of the side wall and improving the protective performance inside the cable trench.

[0052] 7. Assembled mass production: The vibration-damping cable trench cover, telescopic rigid cable rack, flexible side wall of the cable trench, cable trench bottom plate and other components of this device can be mass-produced. The assembled design significantly improves the construction efficiency and reduces the construction period and cost.

[0053] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0054] The term "vertical" is also used in the specification and claims of the present invention, which means basically along the up and down direction, and is not limited to the vertical direction only, and can also be slightly inclined relative to the vertical direction.

Claims

1. A split cable trench, comprising: A bottom plate (1), wherein the length direction of the bottom plate (1) is the front-to-back direction, and the width direction of the bottom plate (1) is the left-to-right direction; Two side walls (2) extending in the front-to-back direction are respectively arranged vertically on the bottom plate (1) on the left and the right, and the two side walls (2) and the bottom plate (1) together form a container (C) with an open top; A cover plate (3) extending in the front-to-back direction and covering the top opening of the cavity (C); A cable rack (4) is arranged in the cavity (C); Features: The side wall (2) comprises rigid support columns (21) and flexible walls (22) which are alternately arranged and connected along the front-to-back direction, and the rigid support columns (21) of the two side walls (2) are arranged opposite to each other, one on the left and one on the right; The cable rack (4) comprises: Two diagonal bracing rods (41) are arranged crosswise in an X shape; wherein, for each diagonal bracing rod (41), the upper end and the lower end of the diagonal bracing rod (41) are respectively supported on the upper part and the lower part of the rigid support column of different side walls; A horizontal support rod (42) extending in the left-right direction is arranged on the two oblique support rods (41) and is used to support the cable.

2. The split cable trench according to claim 1, characterized in that: The upper end of the rigid support column (21) extends toward the interior of the cavity (C) to form a first clamping angle (211) in an inverted L shape for supporting the upper end of the diagonal support rod (41); The lower part of the rigid support column (21) extends toward the interior of the cavity (C) at a position where it contacts the bottom plate to form an L-shaped second clamping angle (212) for supporting the lower end of the diagonal support rod (41).

3. The split cable trench according to claim 1, characterized in that: The cross-sectional area of ​​the rigid support column (21) gradually increases from top to bottom.

4. The split cable trench according to claim 1, characterized in that: The upper plate surface of the bottom plate (1) is an inclined surface which is lower in the middle and higher on the left and right sides, and a drainage hole (11) penetrating the thickness of the plate is provided in the middle of the bottom plate (1).

5. The split cable trench according to claim 1, characterized in that: Notches (12) are provided on the left and right sides of the bottom plate (1) and at positions corresponding to the rigid support columns (21) so that the corresponding rigid support columns (21) can be constrained therein.

6. The split cable trench according to claim 5, characterized in that: The lower end of the rigid support column (21) is located on the lower side of the base plate (1).

7. The split cable trench according to any one of claims 1 to 6, characterized in that: There are at least two cross braces (42), each cross brace (42) is arranged at intervals in the up-down direction, and at least two ends of one of the cross braces (42) are respectively in contact with the inner side surfaces of the corresponding rigid support columns (21) of the two side walls (2).

8. The split cable trench according to claim 7, characterized in that: The intersection of the two diagonal bracing rods (41) is rotatably connected via a rotating shaft (411) extending forward and backward, and the length of each diagonal bracing rod (41) is adjustable; each transverse bracing rod (42) is correspondingly arranged on the upper and lower sides of the rotating shaft (411), and the length of each transverse bracing rod (42) is adjustable.

9. The split cable trench according to any one of claims 1 to 6, characterized in that: The cover plate (3) comprises a vibration-damping layer (31) located at an upper portion and a rigid supporting layer (32) located at a lower portion.

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