An assembled cable trench

Abstract

This utility model relates to the field of cable trench technology and discloses a prefabricated cable trench, comprising: a base plate assembly extending along a first direction; two side plate assemblies respectively disposed on both sides of the base plate assembly along a second direction, each side plate assembly including multiple first side plates and multiple second side plates, the first and second side plates being alternately arranged along the first direction, the two sides of the first side plates in the first direction abutting each other via inclined surfaces, the first and second side plates being mounted on the base plate assembly; and a cover plate covering the side plate assemblies; wherein the first direction is perpendicular to the second direction. The prefabricated cable trench provided by this utility model can improve the overall load-bearing capacity and structural stability by wedging the inclined surfaces of the first and second side plates together.

Description

Technical Field

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

[0002] Currently, cable trenches are widely used in urban construction and industrial projects as an important infrastructure for laying and protecting cables in the power and communication fields. Traditional cable trenches are mostly constructed by on-site concrete pouring, which has disadvantages such as long construction period, a lot of on-site wet work, great influence from weather conditions, long curing time, and difficulty in guaranteeing quality.

[0003] To overcome the shortcomings of cast-in-place cable trenches, prefabricated cable trenches have emerged. Prefabricated cable trenches are typically manufactured in a factory using prefabricated components (such as base plates, side plates, and cover plates), which are then transported to the site for assembly. They offer advantages such as standardized production, controllable quality, fast installation speed, less on-site work, and minimal environmental impact.

[0004] However, in existing prefabricated cable trenches, the side plate assembly is usually composed of multiple independent side plates spliced ​​together. The existing splicing method is mainly a straight butt joint between the end faces. This connection method results in relatively low structural strength between the side plates. When the cable trench is subjected to large lateral soil pressure or uneven settlement occurs, the gap between the end faces is prone to become a weak link, which may lead to problems such as side plate misalignment and loose connection, thereby affecting the overall stability and load-bearing capacity of the entire cable trench structure. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated cable trench, which improves the overall load-bearing capacity and structural stability by wedging the inclined surfaces of the first side plate and the second side plate together.

[0006] To achieve the above objectives, this utility model provides a prefabricated cable trench, comprising:

[0007] A base plate assembly extending along a first direction;

[0008] Two side panel assemblies are respectively disposed on both sides of the base plate assembly in a second direction. Each side panel assembly includes a plurality of first side panel bodies and a plurality of second side panel bodies. The first side panel bodies and the second side panel bodies are arranged alternately along the first direction. Each first side panel body has a first abutting surface on both sides in the first direction, and each second side panel body has a second abutting surface on both sides in the first direction. Both the first abutting surface and the second abutting surface are inclined surfaces. The first abutting surface of the first side panel body abuts against the second abutting surface of the adjacent second side panel body. The first side panel body and the second side panel body are mounted on the base plate assembly.

[0009] A cover plate, which is disposed above the side plate assembly.

[0010] Wherein, the first direction is perpendicular to the second direction.

[0011] Further, when observed in the second direction, the first side plate body is a regular isosceles trapezoid in a positive position, the waist of the first side plate body is the first abutting surface, the second side plate body is an inverted isosceles trapezoid, and the waist of the second side plate body is the second abutting surface.

[0012] Further, the bottom plate assembly includes a plurality of bottom plate bodies, and the plurality of bottom plate bodies are arranged side by side in the first direction. Two fastening assemblies are arranged at intervals along the first direction on one bottom plate body, and the two fastening assemblies are respectively connected to the adjacent first side plate body and the second side plate body.

[0013] Furthermore, first mounting platforms are provided on both sides along the second direction of the bottom plate body. The first mounting platforms extend along the first direction. When observed in the first direction, the first mounting platforms are in a "convex" shape. A first mounting groove extending along the first direction is opened at the lower end of the first side plate body, and a second mounting groove extending along the first direction is opened at the lower end of the second side plate body. The first mounting groove, the second mounting groove and the first mounting platform are fitted and clamped with each other.

[0014] Furthermore, the fastening assembly includes a fastening cylinder, a fastening screw and a fastening nut. The fastening cylinder is embedded in the bottom plate body. The upper end of the fastening cylinder extends from bottom to top to the upper end surface of the first mounting platform. The fastening cylinder has internal threads. External threads are provided at both ends of the fastening screw. The lower end of the fastening screw is engaged with the fastening cylinder. Two fastening holes extending in the up and down direction are respectively opened on the first side plate body and the second side plate body. The lower ends of the fastening holes extend to the bottom of the first mounting groove and the second mounting groove. The upper end of the fastening screw passes through the fastening hole and is engaged with the fastening nut.

[0015] Furthermore, a concrete layer is filled between the fastening hole and the fastening screw.

[0016] Furthermore, the prefabricated cable trench also includes two cover plate receiving plates, which are respectively installed on the upper ends of the two side plate assemblies. The cover plate receiving plates extend along the first direction. The upper end of the first side plate body is provided with a third mounting groove extending along the first direction, and the upper end of the second side plate body is provided with a fourth mounting groove extending along the first direction. The upper end of the fastening screw passes through the bottom of the third and fourth mounting grooves. The lower end of the cover plate receiving plate is provided with a second mounting platform, which is installed in conjunction with the third and fourth mounting grooves. The cover plate receiving plate is a cast-in-place structure, and the cover plate is installed on the cover plate receiving plate.

[0017] Furthermore, a waterstop is provided between the first abutting surface and the second abutting surface, between the first mounting platform and the first mounting groove, between the second mounting groove, and between the second mounting platform and the third mounting groove, and between the fourth mounting groove.

[0018] Compared with the prior art, the prefabricated cable trench of this utility model embodiment has the following advantages: 1. Convenient installation and efficient construction: The base plate assembly, the first side plate, the second side plate, and the cover plate are all prefabricated components. They can be assembled on the construction site to form a prefabricated cable trench, which greatly simplifies the on-site construction process, shortens the construction cycle, improves construction efficiency, and reduces the impact of the on-site environment and weather on construction; 2. Stable structure and reliable connection: The first side plate and the second side plate abut against each other along the first direction through the first abutting surface and the second abutting surface, i.e., the inclined surface, so that the first side plate and the second side plate are wedged together to form a tighter and more stable connection, which enhances the overall longitudinal connection strength and resistance to lateral deformation of the side plate assembly, and ensures the continuity and stability of the cable trench sidewall. Attached Figure Description

[0019] Figure 1 This is a partial exploded view of the assembled cable trench according to an embodiment of this utility model;

[0020] Figure 2 This is a cross-sectional view of the assembled cable trench according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the base plate of the assembled cable trench according to an embodiment of the present invention;

[0022] Figure 4 This is a structural schematic diagram of the first side plate of the assembled cable trench according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the second side plate of the assembled cable trench according to an embodiment of the present invention.

[0024] In the diagram, 1 is the base plate assembly; 11 is the base plate body; and 12 is the first mounting platform.

[0025] 2. Side panel assembly;

[0026] 21. First side panel; 211. First abutment surface; 212. First mounting groove; 213. Third mounting groove;

[0027] 22. Second side panel; 221. Second abutment surface; 222. Second mounting groove; 223. Fourth mounting groove;

[0028] 3. Cover plate;

[0029] 4. Fastening assembly; 41. Fastening sleeve; 42. Fastening screw; 43. Fastening nut;

[0030] 5. Cover plate receiving plate; 51. Second mounting platform

[0031] 6. Fastening hole. Detailed Implementation

[0032] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0033] In this description of the utility model, the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "lateral," and "longitudinal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the utility model and for simplifying the description, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0034] In this description of the utility model, the terms "provided with," "set up," "connected," and "placed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0036] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0037] like Figure 1-5 As shown, an assembly-type cable trench according to an embodiment of the present invention includes:

[0038] Base plate assembly 1 extends along a first direction X;

[0039] Two side plate assemblies 2 are respectively disposed on both sides of the base plate assembly 1 in the second direction Y. The side plate assembly 2 includes multiple first side plate bodies 21 and multiple second side plate bodies 22. The first side plate bodies 21 and the second side plate bodies 22 are arranged alternately along the first direction X. The first side plate bodies 21 have a first abutting surface 211 on both sides in the first direction X. The second side plate bodies 22 have a second abutting surface 221 on both sides in the first direction X. The first abutting surface 211 and the second abutting surface 221 are both inclined surfaces. The first abutting surface 211 of the first side plate body 21 abuts against the second abutting surface 221 of the adjacent second side plate body 22. The first side plate bodies 21 and the second side plate bodies 22 are installed on the base plate assembly 1.

[0040] Cover plate 3, which is installed on top of side plate assembly 2;

[0041] In this context, the first direction X is perpendicular to the second direction Y.

[0042] Based on the above technical solution, 1. Easy installation and efficient construction: The base plate assembly 1, the first side plate 21, the second side plate 22 and the cover plate 3 are all prefabricated components. They can be assembled on the construction site to form a prefabricated cable trench, which greatly simplifies the on-site construction process, shortens the construction cycle, improves construction efficiency, and reduces the impact of the on-site environment and weather on construction; 2. Stable structure and reliable connection: The first side plate 21 and the second side plate 22 abut against each other along the first direction X through the first abutting surface 211 and the second abutting surface 221, i.e., the inclined surface, so that the first side plate 21 and the second side plate 22 are wedged together, forming a tighter and more stable connection, which enhances the overall longitudinal connection strength and resistance to lateral deformation of the side plate assembly 2, and ensures the continuity and stability of the cable trench sidewall.

[0043] Preferably, when viewed along the second direction Y, the first side plate 21 is an upright isosceles trapezoid with the waist of the first side plate 21 being the first abutting surface 211, and the second side plate 22 is an inverted isosceles trapezoid with the waist of the second side plate 22 being the second abutting surface 221.

[0044] The first side plate 21 is an isosceles trapezoid with a wide base and a narrow top, and the second side plate 22 is an isosceles trapezoid with a wide top and a narrow base. They are arranged alternately in the vertical direction, forming a dovetail-like interlocking structure. When subjected to soil pressure, if the second side plate 22 moves downward relative to the first side plate 21, the stress generated between the first abutment surface 211 and the second abutment surface 221 will produce a chain reaction: if one second side plate 22 moves downward, the adjacent first side plate 21, restricted by the base plate assembly 1, moves away from both ends of the second side plate 22 in the first direction X under the action of the inclined plane. At this time, the first side plate 21 pushes the next second side plate 22 to move by moving away from the first abutment surface 211 of the second side plate 22. The movement is transmitted along the side panel assembly 2. However, since the entire side panel assembly 2 is generally constrained in the first direction X (e.g., the two ends of the prefabricated cable trench abut against the fixed structure in the first direction X), the first side panel 21 and the second side panel 22 cannot move freely in the first direction X. As a result, the movement tendency of the second side panel 22 induces a stress chain in the entire side panel assembly 2, establishing a compressive stress state within the entire side panel assembly 2. Mutual constraint forces are generated between the various first side panels 21 and second side panels 22, greatly enhancing the integrity of the entire side panel assembly 2 in the vertical plane. During installation, the hypotenuse of the trapezoid has a certain self-centering or guiding effect. When a new second side panel 22 is placed, its second abutment surface 221 contacts the first abutment surface 211 of the already installed adjacent first side panel 21, naturally guiding the second side panel 22 into the correct position, simplifying the installation process and improving installation accuracy.

[0045] Preferably, the base plate assembly 1 includes a plurality of base plate bodies 11, which are arranged side by side along the first direction X. Two fastening components 4 are provided on one base plate body 11 at intervals along the first direction X. The two fastening components 4 are respectively connected to the adjacent first side plate body 21 and second side plate body 22.

[0046] A plurality of bottom plate bodies 11 are arranged side by side in the first direction X, and one bottom plate body 11 is respectively connected to the adjacent first side plate body 21 and the second side plate body 22. There may be a certain slope or local uplift or depression on the ground. If a single, ultra-long rigid bottom plate is used, it is difficult to have a ground that fits perfectly. A large amount of excavation or backfilling is required to create a horizontal foundation bed to ensure uniform stress at the bottom of the bottom plate. Otherwise, the bottom plate itself will承受巨大的弯曲应力,导致支撑不稳、应力集中的问题,多个较短的底板体11之间允许存在微小的角度变化,这可以使整个底板组件1形成链条状结构,更好地适应地形起伏和地面的坡度,降低了对基床的极端水平度要求,也使得底板体11受力更加均匀。

[0047] More preferably, first mounting platforms 12 are provided on both sides along the second direction Y of the bottom plate body 11. The first mounting platforms 12 extend in the first direction X. When observed in the first direction X, the first mounting platforms 12 are in a "convex" shape. A first mounting groove 212 extending in the first direction X is opened at the lower end of the first side plate body 21, and a second mounting groove 222 extending in the first direction X is opened at the lower end of the second side plate body 22. The first mounting groove 212, the second mounting groove 222 and the first mounting platforms 12 are engaged and clamped with each other.

[0048] Groundwater enters the inside of the cable trench through the gap between the mounting groove and the first mounting platform 12, and must travel along the surface contour of the "convex"-shaped first mounting platform 12, rather than passing through directly in a straight line. This path is longer than a straight-line gap and requires several 90-degree turns. The longer the path, the greater the work required to overcome the frictional resistance along the way, and the greater the energy consumption of the capillary action of groundwater. Moreover, the capillary action depends on the stable meniscus formed in a narrow channel. When the shape of the water flow fish hole changes suddenly, such as the 90-degree turn of the "convex" shape, it becomes difficult to maintain the meniscus.

[0049] More preferably, the fastening assembly 4 includes a fastening cylinder 41, a fastening screw 42 and a fastening nut 43. The fastening cylinder 41 is embedded in the bottom plate body 11. The upper end of the fastening cylinder 41 extends from bottom to top to the upper end surface of the first mounting platform 12. The fastening cylinder 41 has internal threads. External threads are provided at both ends of the fastening screw 42. The lower end of the fastening screw 42 meshes with the fastening cylinder 41. Two fastening holes 6 extending in the up-down direction are respectively opened on the first side plate body 21 and the second side plate body 22. The lower end of the fastening hole 6 extends to the bottom of the first mounting groove 212 and the second mounting groove 222. The upper end of the fastening screw 42 passes through the fastening hole 6 and meshes with the fastening nut 43.

[0050] It should be noted that there is an unclear expression "承受巨大的弯曲应力,导致支撑不稳、应力集中的问题" in the translation of item , which needs to be further clarified in the original text for a more accurate translation.The fastening cylinder 41 is precisely embedded during the prefabrication stage of the base plate 11. During on-site installation, the construction personnel only need to align the fastening holes 6 of the first side plate 21 and the second side plate 22, insert the fastening screw 42, and then tighten the fastening nut 43, which greatly simplifies the complex procedures such as drilling and anchoring on site.

[0051] More preferably, a layer of concrete is filled between the fastening hole 6 and the fastening screw 42.

[0052] When unfilled, there is a gap between the fastening screw 42 and the wall of the fastening hole 6. If the first side plate 21 and the second side plate 22 are subjected to a large pressure in the first direction X, the wall of the fastening hole 6 will exert compressive stress on the fastening screw 42, which can easily lead to deformation of the fastening screw 42. After filling, the concrete layer is tightly connected with the fastening screw 42 and the fastening hole 6 to form a whole. At this time, the force in the first direction X is applied to the fastening screw 42 through the concrete layer, the shear area increases, and the local stress concentration on the fastening screw 42 is reduced. The bottom plate 11 and the first side plate 21 and the second side plate 22 are connected to each other. The shear resistance of the two side plates 22 is significantly enhanced; moreover, the concrete layer is poured on the construction site, and the position between the bottom plate 11 and the first side plate 21 and the second side plate 22 can be adjusted according to the actual construction situation, which improves the construction flexibility; the filled concrete layer completely wraps the part of the fastening bolt 42 in the fastening hole 6, forming a physical barrier that prevents moisture, air or other corrosive media from contacting this part of the fastening bolt 42, providing additional anti-corrosion protection for the fastening bolt 42 and extending the service life of the fastening bolt 42.

[0053] More preferably, the prefabricated cable trench also includes two cover plate receiving plates 5, which are respectively installed on the upper ends of the two side plate assemblies 2. The cover plate receiving plates 5 extend along the first direction X. The upper end of the first side plate 21 is provided with a third mounting groove 213 extending along the first direction X, and the upper end of the second side plate 22 is provided with a fourth mounting groove 223 extending along the first direction X. The upper end of the fastening screw 42 passes through the bottom of the third mounting groove 213 and the fourth mounting groove 223. The lower end of the cover plate receiving plate 5 is provided with a second mounting platform 51, which is installed in conjunction with the third mounting groove 213 and the fourth mounting groove 223. The cover plate receiving plate 5 is a cast-in-place structure, and the cover plate 3 is installed on the cover plate receiving plate 5.

[0054] The cover plate receiving plate 5 is a cast-in-place concrete structure. It is tightly integrated with the third mounting groove 213 and the fourth mounting groove 223 on the top of the multiple first side plates 21 and second side plates 22 below, forming a continuous, seamless, and highly integrated structure. During casting, the cover plate receiving plate 5 can fill the splicing gaps between the first side plates 21 and second side plates 22, so that the originally independent first side plates 21 and second side plates 22 are firmly connected together. Moreover, the cast-in-place cover plate receiving plate 5 can span multiple first side plates 21 and second side plates 22 to form a continuous structural unit, ensuring effective force transmission and structural continuity. The upper end of the fastening screw 42 passes through the bottom of the third mounting groove 213 and the fourth mounting groove 223 on the top of the first side plates 21 and second side plates 22 and extends into the interior of the cover plate receiving plate 5. The cover plate receiving plate 5 is not merely "placed" on the side plate assembly 2, but is connected to the entire side plate assembly 2 through fastening screws 42 and fastening nuts 43, forming a more stable frame and enhancing the side plate assembly 2's ability to resist lateral stress.

[0055] More preferably, a waterstop is provided between the first abutting surface 211 and the second abutting surface 221, between the first mounting platform 12 and the first mounting groove 212 and the second mounting groove 222, and between the second mounting platform 51 and the third mounting groove 213 and the fourth mounting groove 223.

[0056] Installing waterstops at all major precast component joints is equivalent to setting up multiple waterproofing measures along potential leakage paths, providing a far more reliable waterproofing guarantee than relying solely on the geometry of the components themselves (such as convex shapes or bevels), especially when subjected to hydrostatic pressure (such as when the groundwater level is high).

[0057] In summary, this utility model embodiment provides a prefabricated cable trench, which has the following advantages: 1. Convenient installation and efficient construction: The base plate assembly 1, the first side plate 21, the second side plate 22, and the cover plate 3 are all prefabricated components. They can be assembled on-site to form a prefabricated cable trench, which greatly simplifies the on-site construction process, shortens the construction cycle, improves construction efficiency, and reduces the impact of the on-site environment and weather on construction; 2. Stable structure and reliable connection: The first side plate 21 and the second side plate 22 abut against each other along the first direction X through the first abutment surface 211 and the second abutment surface 221, i.e., the inclined surface, so that the first side plate 21 and the second side plate 22 are wedged together, forming a tighter and more stable connection, which enhances the overall longitudinal connection strength and resistance to lateral deformation of the side plate assembly 2, and ensures the continuity and stability of the cable trench sidewall.

[0058] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A fabricated cable trench, characterized in that, include: A base plate assembly (1) extends along a first direction (X); Two side panel assemblies (2) are respectively disposed on both sides of the base plate assembly (1) in the second direction (Y). The side panel assembly (2) includes a plurality of first side panel bodies (21) and a plurality of second side panel bodies (22). The first side panel bodies (21) and the second side panel bodies (22) are arranged alternately along the first direction (X). The first side panel body (21) has a first abutting surface (211) on both sides in the first direction (X). The second side panel body (22) has a second abutting surface (221) on both sides in the first direction (X). The first abutting surface (211) and the second abutting surface (221) are both inclined surfaces. The first abutting surface (211) of the first side panel body (21) abuts against the second abutting surface (221) of the adjacent second side panel body (22). The first side panel body (21) and the second side panel body (22) are mounted on the base plate assembly (1). Cover plate (3), which is disposed on top of the side plate assembly (2); Wherein, the first direction (X) is perpendicular to the second direction (Y).

2. The fabricated cable tray of claim 1, wherein, Viewed along the second direction (Y), the first side plate (21) is an upright isosceles trapezoid, with the waist of the first side plate (21) being the first contact surface (211). The second side plate (22) is an inverted isosceles trapezoid, with the waist of the second side plate (22) being the second contact surface (221).

3. The fabricated cable tray of claim 1, wherein, The base plate assembly (1) includes a plurality of base plate bodies (11), which are arranged side by side along the first direction (X). Two fastening components (4) are provided on one base plate body (11) at intervals along the first direction (X). The two fastening components (4) are respectively connected to the adjacent first side plate body (21) and second side plate body (22).

4. The fabricated cable tray of claim 3, wherein, The base plate (11) is provided with a first mounting platform (12) on both sides of the second direction (Y). The first mounting platform (12) extends along the first direction (X). When viewed along the first direction (X), the first mounting platform (12) is convex. The lower end of the first side plate (21) is provided with a first mounting groove (212) extending along the first direction (X). The lower end of the second side plate (22) is provided with a second mounting groove (222) extending along the first direction (X). The first mounting groove (212) and the second mounting groove (222) are engaged with the first mounting platform (12).

5. The fabricated cable tray of claim 4, wherein, The fastening assembly (4) includes a fastening cylinder (41), a fastening screw (42), and a fastening nut (43). The fastening cylinder (41) is embedded in the base plate (11). The upper end of the fastening cylinder (41) extends from bottom to top to the upper end face of the first mounting platform (12). The fastening cylinder (41) has an internal thread. Both ends of the fastening screw (42) are provided with external threads. The lower end of the fastening screw (42) meshes with the fastening cylinder (41). The first side plate (21) and the second side plate (22) are respectively provided with two fastening holes (6) extending in the vertical direction. The lower end of the fastening hole (6) extends to the bottom of the first mounting groove (212) and the second mounting groove (222). The upper end of the fastening screw (42) passes through the fastening hole (6) and meshes with the fastening nut (43).

6. The fabricated cable tray of claim 5, wherein, A layer of concrete is filled between the fastening hole (6) and the fastening screw (42).

7. The fabricated cable tray of claim 5, wherein, It also includes two cover plate receiving plates (5), which are respectively installed on the upper ends of the two side plate assemblies (2). The cover plate receiving plates (5) extend along the first direction (X). The upper end of the first side plate body (21) is provided with a third mounting groove (213) extending along the first direction (X). The upper end of the second side plate body (22) is provided with a fourth mounting groove (223) extending along the first direction (X). The upper end of the fastening screw (42) passes through the bottom of the third mounting groove (213) and the fourth mounting groove (223). The lower end of the cover plate receiving plate (5) is provided with a second mounting platform (51). The second mounting platform (51) is installed in conjunction with the third mounting groove (213) and the fourth mounting groove (223). The cover plate receiving plate (5) is a cast-in-place structure. The cover plate (3) is installed on the cover plate receiving plate (5).

8. The fabricated cable tray of claim 7, wherein, A waterstop is provided between the first contact surface (211) and the second contact surface (221), between the first mounting platform (12) and the first mounting groove (212) and the second mounting groove (222), and between the second mounting platform (51) and the third mounting groove (213) and the fourth mounting groove (223).

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