A prefabricated assembly type cable laying trench structure

Abstract

The application relates to the technical field of cable laying, in particular to a prefabricated cable laying trench structure, which comprises a plurality of concrete groove bodies which are uniformly distributed and spliced with each other, the concrete groove bodies are in U-shaped structures with openings facing upwards, connecting pieces are symmetrically installed on the inner sides of the two vertical sections of the concrete groove bodies, and connecting holes one are formed in the connecting pieces. The supporting unit can be directly and quickly clamped on the concrete groove body without the need of being fixed through a plurality of bolts, the operation steps of repeated installation of construction personnel are reduced, the labor input is reduced, the laying efficiency of the whole cable laying trench structure is greatly improved, the supporting unit can be adjusted according to the required number of laid cables to adjust the number of corresponding supporting parts, the supporting unit can ensure sufficient supporting strength, and the applicability of the supporting unit is improved without the need of drilling operation on the concrete groove body.

Description

Technical Field

[0001] This invention relates to the field of cable laying technology, and in particular to a prefabricated assembled cable laying trench structure. Background Technology

[0002] Prefabricated cable trench structures are a type of cable trench structure that adopts modular design, prefabrication, and on-site assembly, and has advantages such as fast construction speed, high quality, and environmental friendliness.

[0003] There are two main types of existing prefabricated cable laying trenches. One type includes a base plate, side plates, a cover plate, and metal supports. During construction, the base plate is first laid on a bedding layer, then the side plates are spliced ​​to the base plate, followed by the metal supports being connected to the side plates, and finally the cover plate is placed on top of the side plates. The other type directly uses an integrated trench structure, which is placed directly on the bedding layer and spliced ​​during construction. However, these two existing prefabricated cable laying trench structures are usually connected only by mortise and tenon joints or bolts. The mortise and tenon joint method will result in poor overall continuity after long-term use. If the soil bearing capacity of the laying area is uneven, it is easy to cause inconsistent settlement of trench sections, leading to joint cracking, side plate tilting, or even base plate breakage, ultimately compromising the stability of the cable laying space. The bolted connection method requires a large number of bolts, and the connection operation is cumbersome. In addition, the connection between the metal supports and the side plates also requires multiple bolts, which reduces the efficiency of splicing multiple prefabricated cable laying trench structures and increases labor input.

[0004] Therefore, there is an urgent need to provide a prefabricated cable laying trench structure that can improve construction efficiency and connection strength. Summary of the Invention

[0005] Therefore, it is necessary to provide a prefabricated cable laying trench structure to solve the problems that arise during the construction of existing prefabricated cable laying trench structures.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a prefabricated assembled cable laying trench structure, comprising: multiple uniformly distributed and interlocked concrete trenches, the concrete trenches having an upward-facing U-shaped structure, and connectors symmetrically installed on the inner sides of the two vertical sections of the concrete trenches, with a connection hole provided on the connector.

[0007] The prefabricated cable laying trench structure also includes a support unit. There are two support units, which are symmetrically distributed in the concrete trench. Each support unit includes a support frame above two connectors on the same side. Both ends of the support frame are connected to a clamping pipe, which is inserted into the corresponding connection hole. Multiple evenly distributed support parts slide through the support frame.

[0008] The support includes a positioning frame that slides through the support frame. The positioning frame has a U-shaped structure and its opening faces the center of the concrete trough. Multiple support rods are installed inside the positioning frame, evenly distributed from top to bottom. A limit seat is installed at the upper end of the support rod away from the positioning frame, and a limit support plate is hinged to the limit seat.

[0009] The prefabricated cable laying trench structure also includes a connecting unit. Multiple connecting units are provided and are located inside the joint of two adjacent concrete trenches. Each connecting unit includes a splicing frame located inside the joint of two concrete trenches. The splicing frame has an upward-facing U-shaped structure. A splicing plate located at the lower end of the connector is installed on the inner side of each of the two vertical sections of the splicing frame. Two connecting holes are symmetrically provided on the splicing plate and are coaxially distributed with the corresponding connecting holes. The connecting holes are inserted and engaged with the corresponding clamping pipe.

[0010] The prefabricated cable laying trench structure also includes a cover plate unit. Multiple cover plate units are provided and each covers the upper end of the corresponding concrete trench. Each cover plate unit includes a concrete cover plate covering the upper end of the corresponding concrete trench. Limiting parts that cooperate with the corresponding clamping pipe are installed at the four corners of the lower end of the concrete cover plate.

[0011] Preferably, the support unit further includes a plurality of positioning holes evenly formed on the support frame and a plurality of positioning parts respectively connected to the corresponding positioning frame.

[0012] Preferably, the support part further includes multiple baffles rotatably connected to the ends of multiple support rods away from the positioning frame, and a support column is installed at the lower end of the lowest support rod.

[0013] Preferably, the positioning part includes a positioning plate that is fixedly connected to the outside of the corresponding positioning frame and located above the support frame, and a positioning rod is provided through the middle of the positioning plate, and the positioning rod is inserted into the corresponding positioning hole.

[0014] Preferably, the limiting part includes a connecting sleeve installed on the concrete cover plate, a limiting rod connected to the connecting sleeve by means of threaded engagement, the limiting rod passing through the corresponding clamping pipe, a limiting sleeve installed on the annular surface of the limiting rod, the limiting sleeve being fitted on the upper end of the clamping pipe, and the lower end of the limiting sleeve being tightly attached to the upper end of the support frame.

[0015] Preferably, the connector has an L-shaped structure, and two connectors on the same side of the joint of two adjacent concrete troughs are symmetrically distributed and form a locking groove that engages with the vertical section of the splicing frame.

[0016] Preferably, a rubber pad for sealing the joint between two adjacent concrete troughs is laid on the middle of the outer side of the splicing frame.

[0017] Preferably, one end of the concrete trough is provided with a splicing groove, and the other end of the concrete trough is provided with a splicing protrusion that engages with the splicing groove.

[0018] In summary, the present invention has the following beneficial technical effects: 1. The support unit used in the present invention can be directly and quickly snapped onto the concrete trench without the need for fixing with multiple bolts, reducing the number of repeated installation steps for construction personnel. This not only reduces labor input but also greatly improves the laying efficiency of the entire cable laying trench structure. Furthermore, the number of support parts of the support unit can be adjusted according to the number of cables to be laid, ensuring sufficient support strength, and there is no need for bolt fixing operations on the concrete trench, thus improving the applicability of the support unit.

[0019] 2. The support unit used in this invention can engage with the concrete trough while simultaneously cooperating with the connecting unit to initially limit the movement of two adjacent concrete troughs. Furthermore, it can cooperate with the cover plate unit to further limit the movement between adjacent concrete troughs. This not only improves the efficiency of splicing adjacent concrete troughs but also enhances the strength of the splice, reduces the impact of the surrounding environment on the connection between adjacent concrete troughs, and prevents separation at the connection point. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0022] Figure 2 A schematic diagram of the structure of the cover plate removal unit of the present invention is shown.

[0023] Figure 3 A front view of the present invention is shown.

[0024] Figure 4 A left view of the present invention is shown.

[0025] Figure 5 It shows Figure 3 Sectional view of AA.

[0026] Figure 6 It shows Figure 5 A magnified view of region C in the middle.

[0027] Figure 7 It shows Figure 4 A cross-sectional view of the middle section BB.

[0028] Figure 8 A structural schematic diagram of the concrete trough and support unit of the present invention is shown.

[0029] Figure 9 A schematic diagram of the splicing of two adjacent concrete troughs according to the present invention is shown.

[0030] Figure 10 A schematic diagram of the connection unit of the present invention is shown.

[0031] The above-mentioned attached drawings include the following reference numerals: 1. Concrete tank; 10. Connector; 11. Connecting hole one; 12. Splicing groove; 13. Splicing protrusion; 2. Support unit; 20. Support frame; 21. Clip-on pipe; 22. Support part; 220. Positioning frame; 221. Support rod; 222. Limiting seat; 223. Limiting support plate; 224. Support column; 225. Baffle; 23. Positioning hole; 24. Positioning part; 240. Positioning plate; 241. Positioning rod; 3. Connecting unit; 30. Splicing frame; 31. Splicing plate; 32. Connecting hole two; 33. Rubber pad; 4. Cover plate unit; 40. Concrete cover plate; 41. Limiting part; 410. Connecting sleeve; 411. Limiting rod; 412. Limiting sleeve. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 9 A prefabricated cable laying trench structure is characterized by comprising multiple uniformly distributed and interlocked concrete trenches 1, each concrete trench 1 having an upward-facing U-shaped structure. Connectors 10 are symmetrically installed on the inner sides of the two vertical sections of each concrete trench 1 via pre-embedding. Each connector 10 has an L-shaped structure and a connecting hole 11. One end of each concrete trench 1 has a splicing groove 12, and the other end of each concrete trench 1 has a splicing protrusion 13 that engages with the splicing groove 12.

[0034] See Figure 3 , Figure 7 , Figure 9 Figure 10 The prefabricated cable laying trench also includes multiple connecting units 3 located inside the joint of two adjacent concrete trenches 1. Each connecting unit 3 includes a splicing frame 30 located inside the joint of two concrete trenches 1. The splicing frame 30 has an upward-facing U-shaped structure. The inner sides of the two vertical sections of the splicing frame 30 are each equipped with a splicing plate 31 located at the lower end of the connector 10. The two connectors 10 on the same side of the joint of two adjacent concrete trenches 1 are symmetrically distributed and form a snap-fit ​​groove that snaps into the vertical section of the splicing frame 30.

[0035] In practice, existing excavation equipment is used to dig trenches on the foundation to be paved. Multiple concrete troughs 1 are then transported to the paving site, and existing cranes are used to lay the concrete troughs 1 from one side of the trench to the other. During the paving process, after each concrete trough 1 is laid, a splicing frame 30 is inserted into the gap between the two connectors 10 at the splicing end of the concrete trough 1 and the two vertical sections of the concrete trough 1. Then, the next concrete trough 1 is spliced ​​onto the already laid concrete... At the splicing end of the trough 1, the splicing groove 12 between two adjacent concrete troughs 1 is inserted and engaged with the splicing protrusion 13. This step is repeated until multiple concrete troughs 1 are spliced. The lower end of each splicing frame 30 is close to the splicing point of two adjacent concrete troughs 1. The two vertical sections of the splicing frame 30 are respectively located in the snap-fit ​​groove formed by two adjacent connectors 10. The splicing plate 31 on the vertical section of the splicing frame 30 is located at the lower end of the corresponding two connectors 10. The connectors 10 can be existing plate-shaped or frame-shaped structures, and are not limited to a single type.

[0036] See Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 The prefabricated cable laying trench also includes two support units 2 that are symmetrically distributed in the concrete trench 1. The support unit 2 includes a support frame 20 above two connectors 10 on the same side. The support unit 2 also includes a plurality of positioning holes 23 evenly opened on the support frame 20 and a plurality of positioning parts 24 that are respectively connected to the corresponding positioning frame 220.

[0037] See Figure 7 and Figure 8 Multiple evenly distributed support parts 22 are slidably passed through the support frame 20. Each support part 22 includes a positioning frame 220 slidably passed through the support frame 20. The positioning frame 220 has a U-shaped structure and its opening faces the middle of the concrete tank 1.

[0038] See Figure 8The positioning part 24 includes a positioning plate 240 that is fixedly connected to the outside of the corresponding positioning frame 220 and located above the support frame 20. A positioning rod 241 is provided through the middle of the positioning plate 240, and the positioning rod 241 is inserted into the corresponding positioning hole 23.

[0039] In practice, based on the number of cables to be laid, select the corresponding number of positioning frames 220 and place them on the support frame 20. The positioning frames 220 drive the positioning plates 240 to move synchronously. Then, each positioning frame 220 is moved to the corresponding position, and multiple positioning rods 241 are inserted into the corresponding positioning plates 240 and the corresponding positioning holes 23 in sequence to realize the positioning function of the positioning frames 220. Repeat this step to assemble multiple support units 2. This process can be directly assembled after production without the need for on-site assembly.

[0040] See Figure 9 Both ends of the support frame 20 are connected to a retaining tube 21, which is inserted into the corresponding connection hole 11.

[0041] See Figure 9 and Figure 10 The inner sides of the two vertical sections of the splicing frame 30 are each equipped with a splicing plate 31 located at the lower end of the connector 10. Two connecting holes 32 are symmetrically opened on the splicing plate 31 and are coaxially distributed with the corresponding connecting hole 11. The connecting hole 32 is inserted and engaged with the corresponding clamping tube 21.

[0042] In practice, a support ring is installed on the outer ring of the clamping pipe 21. The support ring is used to limit the insertion depth of the clamping pipe 21. After multiple concrete troughs 1 are spliced, multiple clamping pipes 21 are first inserted into the corresponding connection holes 11 and 32 to connect the connector 10 and splicing plate 31. This enables the connection between two adjacent concrete troughs 1 through the splicing frame 30. Then, multiple support units 2 are placed in multiple concrete troughs 1 in sequence. When the support unit 2 is placed, the two ends of the support frame 20 are respectively inserted into the corresponding two clamping pipes 21. The two clamping pipes 21 support and limit the support frame 20, and thus limit the multiple support parts 22. This effectively avoids the technical defect of fixing each support part 22 to the concrete trough 1 with multiple bolts in the prior art, greatly improves the laying efficiency of the entire cable laying trench structure, reduces the labor input of construction personnel, and eliminates the need to reserve installation holes when the concrete trough 1 is prefabricated, reducing the difficulty of prefabrication of the concrete trough 1.

[0043] See Figures 5-8The positioning frame 220 is equipped with a plurality of support rods 221 evenly distributed from top to bottom. A limiting seat 222 is installed at the upper end of the support rod 221 away from the positioning frame 220. The limiting seat 222 has an L-shaped structure and a limiting support plate 223 is hinged on the limiting seat 222. The support part 22 also includes a plurality of baffles 225 respectively rotatably connected to the ends of the plurality of support rods 221 away from the positioning frame 220. A support column 224 is installed at the lower end of the lowest support rod 221.

[0044] In practice, after the initial positioning of multiple support units 2 is completed, the multiple cables to be laid are sequentially laid on the upper ends of multiple support rods 221. The limiting seat 222 and the limiting support plate 223 simultaneously limit the multiple cables laid, preventing the multiple cables from falling off the support rods 221. At the same time, the limiting support plate 223 between two adjacent support rods 221 is in a vertical state and supports the support rod 221 located above it. The vertical section of the L-shaped limiting seat 222 cooperates with the baffle 225 to limit the limiting support plate 223 and keep it in a vertical state. The multiple limiting support plates 223 and the support column 224 work together to improve the overall bearing capacity of the support part 22 and reduce the stress intensity of the support frame 20 after supporting multiple support parts 22, thereby avoiding the bending deformation of the support frame 20 and improving the service life of the support unit 2.

[0045] The prefabricated cable laying trench also includes multiple cover plate units 4 that cover the upper end of the corresponding concrete trench 1. Each cover plate unit 4 includes a concrete cover plate 40 covering the upper end of the corresponding concrete trench 1. Each of the four corners at the lower end of the concrete cover plate 40 is equipped with a limiting part 41 that is inserted and cooperates with the corresponding clamping pipe 21.

[0046] See Figure 1 , Figure 2 , Figure 5 and Figure 7 The limiting part 41 includes a connecting sleeve 410 installed on the concrete cover plate 40. A limiting rod 411 is connected to the connecting sleeve 410 by means of threaded engagement. The limiting rod 411 passes through the corresponding clamping pipe 21. A limiting sleeve 412 is installed on the annular surface of the limiting rod 411. The limiting sleeve 412 is sleeved on the upper end of the clamping pipe 21, and the lower end of the limiting sleeve 412 is tightly attached to the upper end of the support frame 20.

[0047] See Figure 10 The outer middle part of the splicing frame 30 is covered with a rubber pad 33 for sealing the splicing of two adjacent concrete troughs 1.

[0048] In practice, after multiple cables are laid, multiple limiting rods 411 are first connected to the connecting sleeve 410 with bolts. Then, the concrete cover plate 40 is placed on the upper end of the corresponding concrete tank 1. At the same time, the concrete cover plate 40 drives the multiple limiting rods 411 to pass through the clamping pipe 21 and contact the splicing frame 30. The concrete cover plate 40 further presses down on the splicing frame 30 through its own weight, so that the rubber pad 33 is tightly attached to the splice of two adjacent concrete tanks 1, further strengthening the sealing strength of the splice of two adjacent concrete tanks 1. At the same time, the limiting sleeve 412 is fitted onto the corresponding clamping pipe 21. Furthermore, the lower end presses down on the support frame 20, and the concrete cover plate 40 limits the support frame 20 by its own weight. The limiting rod 411 fills the clamping pipe 21, thereby increasing the connection strength between the connector 10 and the splicing plate 31, realizing the overall connection strength after the splicing of multiple concrete troughs 1. After the installation of multiple concrete cover plates 40, waterproof adhesive is applied to the splicing of the concrete troughs 1 to further seal the gaps between the spliced ​​multiple concrete troughs 1 and multiple concrete cover plates 40. Then, the soil is backfilled and leveled, and the prefabricated assembled cable laying trench structure is completed.

[0049] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A prefabricated assembly cable trench structure, characterized by: Including multiple mutually spliced concrete troughs, both vertical sections of the concrete trough are symmetrically installed with connecting pieces on the inside, and connecting holes one are opened on the connecting pieces; The support unit is provided with two and is symmetrically distributed in the concrete trough, the support unit includes a support frame provided above the two connecting pieces on the same side, both ends of the support frame are inserted with a clamping pipe, the clamping pipe is inserted and matched with the corresponding connecting hole one, and a plurality of support parts are slidably provided on the support frame; The support part includes a positioning frame slidably provided on the support frame, a plurality of supporting rods are installed in the positioning frame, a limiting seat is installed at the upper end of the supporting rod away from the positioning frame, and a limiting support plate is hinged on the limiting seat; The connecting unit is provided with a plurality of connecting units, the connecting unit includes a splicing frame provided inside the splicing place of the two concrete troughs, a splicing plate located at the lower end of the connecting piece is installed on the inside of the two vertical sections of the splicing frame, two connecting holes two are symmetrically opened on the splicing plate, and the connecting holes two are inserted and matched with the corresponding clamping pipe. The cover plate unit is provided with a plurality of cover plate units, the cover plate unit includes a concrete cover plate covering the upper end of the corresponding concrete trough, and a limiting part inserted and matched with the corresponding clamping pipe is installed at the lower end of the concrete cover plate.

2. A prefabricated cable duct structure according to claim 1, characterized in that: The support unit further includes a plurality of positioning holes uniformly opened on the support frame and a plurality of positioning parts respectively connected with the corresponding positioning frame.

3. A prefabricated cable duct structure according to claim 1, characterized in that: The support part further includes a plurality of baffle plates rotatably connected to one end of the plurality of supporting rods away from the positioning frame, and a supporting column is installed at the lower end of the lowermost supporting rod.

4. A prefabricated cable duct structure according to claim 2, characterized in that: The positioning part includes a positioning plate fixedly connected to the outside of the corresponding positioning frame and located above the support frame, a positioning rod is provided in the middle of the positioning plate, and the positioning rod is inserted and matched with the corresponding positioning hole.

5. A prefabricated cable duct structure according to claim 1, characterized in that: The limiting part includes a connecting sleeve installed on the concrete cover plate, a limiting rod is connected in the connecting sleeve through threaded cooperation, the limiting rod penetrates through the corresponding clamping pipe, a limiting sleeve is installed on the annular surface of the limiting rod, the limiting sleeve is sleeved on the upper end of the clamping pipe, and the lower end of the limiting sleeve is tightly attached to the upper end of the support frame.

6. A prefabricated cable duct structure according to claim 1, characterized in that: The connecting piece is in L-shaped structure, the two connecting pieces on the same side of the splicing place of the adjacent two concrete troughs are symmetrically distributed and form a clamping groove clamped with the vertical section of the splicing frame.

7. A prefabricated cable duct structure according to claim 1, characterized in that: The rubber pad for sealing the splicing place of the adjacent two concrete troughs is laid on the middle of the outside of the splicing frame.

8. A prefabricated cable duct structure according to claim 1, characterized in that: The concrete trough is provided with a splicing groove at one end, and the other end of the concrete trough is provided with a splicing protrusion inserted and matched with the splicing groove.

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