A prefabricated cable trench

Abstract

This utility model discloses a prefabricated cable trench, relating to the field of cable installation technology. The utility model includes a cable trench body and a trench cover. A groove is formed on one side of the cable trench body, and a sealing component is disposed inside the groove. The sealing component includes a mounting frame fixedly connected within a mounting groove and a mounting bracket located within the groove. A first slider is movably connected within the mounting frame, and an L-shaped plate is fixedly connected to the end face of the first slider located outside the mounting frame. This utility model uses the L-shaped plate to fix a retaining plate to the mounting bracket, and to fix the mounting bracket and water-swellable adhesive strip within the groove. The water-swellable adhesive strip enhances the sealing performance at the connection points of the cable trench body, solving the problem of poor sealing at existing connections. Simultaneously, a movable plate and a buffer spring buffer the protective frame and protective net, and the protective frame and protective net prevent stones and other debris from falling directly onto the cable, solving the problem of poor protection capabilities in existing systems.

Description

Technical Field

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

[0002] A cable is a combination of wires used to transmit electrical energy, signals, or data. It is usually composed of a conductor, an insulation layer, a shielding layer, and a sheath. During the installation of cables, cable trenches are one of the most important facilities. They are mainly used for laying and protecting cables, enabling centralized management of cables, avoiding mechanical damage from direct burial, and facilitating later maintenance and capacity expansion.

[0003] A prefabricated cable trench assembly structure is disclosed in the existing patent announcement document CN222464110U, which includes several prefabricated components connected in sequence. The prefabricated components are set between the road cut slope and the highway. The prefabricated components include a first concrete body, a second concrete body, and a third concrete body spliced ​​together; the second concrete body is set between the first concrete body and the third concrete body; the first concrete body and the second concrete body are spliced ​​together to form a cable trench section, and the third concrete body and the second concrete body form a side trench section; the first concrete body and the third concrete body both have a first splicing structure on the lower side facing the second concrete body, which can be spliced ​​with the second concrete body to form a complete prefabricated component; the second concrete body has a second splicing structure on both sides facing the first concrete body and the third concrete body, which corresponds to the first splicing structure.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The above-mentioned modular cable trench assembly structure is composed of a first concrete body, a second concrete body, and a third concrete body to form a section of cable trench. However, during use, the first concrete body, the second concrete body, and the third concrete body lack sealing structures, resulting in poor sealing at the connection between the cable trenches. Moisture can easily penetrate into the interior of the cable trench through the connection, resulting in poor sealing performance.

[0006] 2. The prefabricated cable trench assembly structure described above has a cover plate on top of its precast components. The cover plate includes a cable trench cover plate set on top of the first concrete body and a side trench cover plate set on top of the third concrete body. The cable trench is sealed inside by the cable trench cover plate and the side trench cover plate. However, during use, it lacks a structure to protect the cable. When the cover plate is damaged by external force, the stone fragments can easily come into direct contact with the cable, thereby causing damage to the cable. The protection capability is poor.

[0007] To address these issues, we provide a prefabricated cable trench. Utility Model Content

[0008] The purpose of this utility model is to provide a prefabricated cable trench. The L-shaped plate fixes the clamping plate to the mounting frame, and the mounting frame and water-swellable rubber strip are fixed in the groove. The water-swellable rubber strip enhances the sealing of the connection of the cable trench body, solving the problem of poor sealing at the existing connection. At the same time, the movable plate and buffer spring buffer the protective frame and protective net, and prevent stones and other debris from falling directly onto the cable, solving the problem of poor protection capability in the existing system.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] This utility model relates to a prefabricated cable trench, comprising a cable trench body and a trench cover. The inner side of the cable trench body has mounting grooves on both the upper and lower surfaces. One side of the cable trench body has a recess, within which a slot is formed. A sealing assembly is disposed inside the recess. The sealing assembly includes a mounting frame fixedly connected to the mounting groove and a mounting bracket located within the recess. A first slider is movably connected within the mounting frame. An L-shaped plate is fixedly connected to the end face of the first slider outside the mounting frame. Each vertical support arm of the L-shaped plate has a locking block fixedly connected to it. Each vertical support arm of the mounting bracket has a through groove, through which a locking plate passes. One end of the locking plate is loosely fitted into the slot. The other end of the card plate is fixedly connected to a U-shaped frame that cooperates with the card block. A water-swellable rubber strip is fixedly connected to one side of the outer wall of the mounting frame. The water-swellable rubber strip is located inside the groove. A protective component is also installed inside the upper part of the cable trench body. The protective component includes an L-shaped frame fixedly connected to the upper part of the inner side of the cable trench body. A connecting rod passes through the longitudinal support arm of the L-shaped frame. A movable plate is fixedly connected to the top of the connecting rod. A buffer spring is sleeved on the outside of the connecting rod. The two ends of the buffer spring are fixedly connected to the opposing surfaces of the L-shaped frame and the movable plate, respectively. A protective frame is fixedly connected to the upper surface of the movable plate. A protective net is fixedly connected inside the protective frame.

[0011] A further feature of this invention is that a protrusion is fixedly connected to the other side of the cable trench body, and the protrusion and the groove cooperate with each other.

[0012] A further feature of this invention is that a positioning post is fixedly connected to one side of the outer wall of the first slider, and the end of the positioning post away from the first slider extends to the outside of the mounting frame and is fitted with a clearance fit inside the positioning hole located on the vertical support arm of the mounting frame. A return spring is fixedly connected to the other side of the outer wall of the first slider, and the end of the return spring away from the first slider is fixedly connected to one side of the inner wall of the mounting frame.

[0013] A further feature of this invention is that rubber pillars are fixedly connected to the inner wall of one side of the mounting frame and the outer wall of the other side of the first slider, and the rubber pillars are located inside the return spring.

[0014] A further feature of this invention is that threaded rods are rotatably connected to the inner side of the cable trench body via a first mounting base, a knob is fixedly connected to one end of the threaded rod, a second slider is threadedly connected to the outer wall of the threaded rod, and the end of the L-shaped plate away from the first slider is fixedly connected to the top and bottom of the second slider respectively.

[0015] A further feature of this invention is that a limiting nut is threaded to the bottom end of the connecting rod, and the limiting nut is located below the longitudinal support arm of the L-shaped frame.

[0016] A further feature of this invention is that the upper surface of the movable plate is fixedly connected with a fixing rod, and the top of the fixing rod passes through the circumference of the protective frame and is threaded with a fastening nut.

[0017] A further feature of this invention is that: a second mounting seat is fixedly connected to each of the facing surfaces of the adjacent movable plates on the left and right sides; the same mounting rod is rotatably connected between the adjacent second mounting seats on the left and right sides; a guide plate is fixedly connected to the center of the outer wall of the mounting rod; the guide plate is located below the protective frame and is inclined; a torsion spring is sleeved on the outer side of the mounting rod; and the two ends of the torsion spring are respectively fixedly connected to the outer walls of the second mounting seat and the guide plate on both sides.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting a sealing component, places the mounting bracket inside the groove, and inserts one end of the card plate through the through groove on the mounting bracket with a gap fit inside the slot. Then, by rotating the knob, the knob drives the threaded rod and the second slider to move. The second slider drives the L-shaped plate and the card block to move, so that the card block is gap-fitted inside the U-shaped frame. This realizes the installation of the water-swellable rubber strip inside the groove, which is convenient for the installation and removal of the water-swellable rubber strip. At the same time, the water-swellable rubber strip enhances the sealing of the cable trench body connection, enhances the protection of the cable, and facilitates the laying of the cable.

[0020] 2. By setting up protective components, when the cover plate is damaged, the stones and other debris fall onto the protective net under the action of gravity. Part of the external force on the protective frame and the protective net is transmitted to the buffer spring through the movable plate. The elasticity of the buffer spring provides buffer protection for the protective frame and the protective net, preventing the protective net from being damaged due to excessive external force. At the same time, the protective net prevents stones and other debris from directly contacting the cables in the cable trench, enhancing the protection of the cables and facilitating the laying of cables. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a front cross-sectional view of the cable trench body of this utility model.

[0024] Figure 3 This is a schematic diagram of the sealing assembly of this utility model.

[0025] Figure 4 This is a structural disassembly diagram of the mounting frame of this utility model.

[0026] Figure 5 This is a schematic diagram of the installation of the L-shaped plate and threaded rod of this utility model.

[0027] Figure 6 This is a structural disassembly diagram of the mounting bracket and rainwater expansion strip of this utility model.

[0028] Figure 7 This is a schematic diagram of the structure of the protective component of this utility model.

[0029] Figure 8 This is a structural disassembly diagram of the L-shaped frame and movable plate of this utility model.

[0030] Figure 9 This is a structural disassembly diagram of the guide plate of this utility model.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1-Cable trench body, 101-Mounting groove, 102-Groove, 103-Slot, 104-Protrusion, 2-Trench cover, 3-Sealing assembly, 301-Mounting frame, 301a-First slider, 301b-Positioning post, 301c-Return spring, 301d-Rubber post, 302-L-shaped plate, 302a-Card, 303-Threaded rod, 303a-First mounting base, 303b-Knob, 303c-Second slider, 304-Mounting bracket, 304a- Positioning hole, 304b-through groove, 305-clamping plate, 305a-U-shaped frame, 306-water-swellable rubber strip, 4-protective component, 401-L-shaped frame, 402-movable plate, 402a-connecting rod, 402b-limiting nut, 402c-fixing rod, 402d-fastening nut, 402e-second mounting base, 403-buffer spring, 404-protective frame, 405-protective net, 406-guide plate, 406a-mounting rod, 406b-torsion spring. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this is the first embodiment of the present invention. This embodiment provides a prefabricated cable trench, including a cable trench body 1 and a trench cover 2. The inner side of the cable trench body 1 is provided with mounting grooves 101 on both the upper and lower sides. A groove 102 is provided on one side of the cable trench body 1. A slot 103 is provided in the groove 102. A sealing component 3 is provided inside the groove 102. The sealing component 3 includes a mounting bracket 304, an L-shaped plate 302, a mounting bracket 304, a retaining plate 305, and a water-swellable adhesive strip 306. The retaining plate 305 is fixed to the mounting bracket 304 by the L-shaped plate 302, and the mounting bracket 304 and the water-swellable adhesive strip 306 are fixed in the groove 102. The water-swellable adhesive strip 306 enhances the sealing performance of the connection of the cable trench body 1, solving the problem of poor sealing performance at existing connections.

[0036] Specifically, the mounting frame 301 is fixedly connected inside the mounting groove 101. A first slider 301a is movably connected inside the mounting frame 301. An L-shaped plate 302 is fixedly connected to the end face of the first slider 301a located outside the mounting frame 301. A locking block 302a is fixedly connected to the vertical support arm of the L-shaped plate 302. The mounting bracket 304 is located inside the groove 102. A through groove 304b is opened on the vertical support arm of the mounting bracket 304. A locking plate 305 passes through the through groove 304b. One end of the locking plate 305 is fitted into the groove 103 with a clearance. The other end of the locking plate 305 is fixedly connected to a U-shaped frame 305a that cooperates with the locking block 302a. A water-swellable rubber strip 306 is fixedly connected to one outer wall of the mounting bracket 304. The water-swellable rubber strip 306 is located in the groove. Inside the groove 102, the mounting frame 301 and the first slider 301a are used to slide the L-shaped plate 302. The L-shaped plate 302 and the locking block 302a are used to fix the locking plate 305 on the U-shaped frame. The mounting bracket 304 is used to install the water-swellable rubber strip 306 inside the groove 102. The locking plate 305 is used to fix the mounting bracket 304 inside the groove 102. The U-shaped frame 305a is used to connect and fix the locking block 302a and the locking plate 305. The water-swellable rubber strip 306 is used to increase the sealing of the connection of the cable trench body 1. The water-swellable rubber strip 306 has a T-shaped or rectangular cross section, a water expansion ratio ≥250%, a tensile strength ≥3.5MPa, and a contact pressure ≥1.0MPa after expansion.

[0037] Furthermore, a protrusion 104 is fixedly connected to the other side of the cable trench body 1. The protrusion 104 and the groove 102 cooperate with each other. The cable trench body 1 adopts a precast concrete structure. The protrusion and groove 102 are integrally formed during the prefabrication process. The cross-sectional shape of the protrusion and groove 102 is rectangular or trapezoidal, and the dimensions of the protrusion and groove 102 are completely matched to ensure the tightness of the connection of the cable trench body 1.

[0038] A positioning post 301b is fixedly connected to one side of the outer wall of the first slider 301a. The end of the positioning post 301b away from the first slider 301a extends to the outside of the mounting frame 301 and is clearance-fitted into the positioning hole 304a located on the vertical support arm of the mounting bracket 304. A return spring 301c is fixedly connected to the other side of the outer wall of the first slider 301a. The end of the return spring 301c away from the first slider 301a is fixedly connected to one side of the inner wall of the mounting frame 301.

[0039] Rubber posts 301d are fixedly connected to the inner wall of one side of the mounting frame 301 and the outer wall of the other side of the first slider 301a. The rubber posts 301d are located inside the return spring 301c.

[0040] The inner side of the cable trench body 1 is rotatably connected to a threaded rod 303 via a first mounting base 303a. A knob 303b is fixedly connected to one end of the threaded rod 303. A second slider 303c is threadedly connected to the outer wall of the threaded rod 303. The end of the L-shaped plate 302 away from the first slider 301a is fixedly connected to the top and bottom of the second slider 303c respectively.

[0041] The operation process of this embodiment is as follows: the mounting bracket 304 is placed inside the groove 102, and one end of the clamping plate 305 is inserted through the through groove 304b on the mounting bracket 304 and fitted with a gap inside the clamping groove 103. Then, the knob 303b is rotated, which drives the threaded rod 303 and the second slider 303c to move. The second slider 303c drives the L-shaped plate 302 and the clamping block 302a to move, so that the clamping block 302a is fitted with a gap inside the U-shaped frame 305a, thereby realizing the installation of the water-swellable adhesive strip 306 inside the groove 102.

[0042] Example 2

[0043] Please see Figure 1 , Figure 7 , Figure 8 and Figure 9 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: a protective component 4 is also provided on the upper part of the inside of the cable trench body 1. The protective component 4 includes an L-shaped frame 401, a movable plate 402, a buffer spring 403, a protective frame 404, and a protective net 405. The movable plate 402 and the buffer spring 403 buffer the protective frame 404 and the protective net 405, and the protective frame 404 and the protective net 405 prevent stones and other debris from falling directly onto the cable, thus solving the problem of poor protection capability in the existing system.

[0044] Specifically, the L-shaped frame 401 is fixedly connected to the upper inner side of the cable trench body 1. A connecting rod 402a passes through the longitudinal support arm of the L-shaped frame 401. A movable plate 402 is fixedly connected to the top of the connecting rod 402a. A buffer spring 403 is sleeved on the outer side of the connecting rod 402a. The two ends of the buffer spring 403 are respectively fixedly connected to the facing surfaces of the L-shaped frame 401 and the movable plate 402. A protective frame 404 is fixedly connected to the upper surface of the movable plate 402. A protective net 405 is fixedly connected inside the protective frame 404. The L-shaped frame 401 is used to install the movable plate 402 inside the cable trench body 1. The movable plate 402 is used to install the protective frame 404 and the protective net 405. The connecting rod 402a is used to movably install the movable plate 402 on the L-shaped frame 401. The buffer spring 403 is used to buffer and protect the protective frame 404 and the protective net 405 to prevent them from being damaged by large external forces. The protective frame 404 and the protective net 405 prevent stones and other debris from falling into the cable trench body 1.

[0045] Furthermore, the bottom end of the connecting rod 402a is threadedly connected to a limiting nut 402b, which is located below the longitudinal support arm of the L-shaped frame 401.

[0046] The upper surface of the movable plate 402 is fixedly connected with a fixing rod 402c. The top of the fixing rod 402c passes through the surface of the protective frame 404 and is threaded with a fastening nut 402d.

[0047] Each of the adjacent movable plates 402 has a second mounting seat 402e fixedly connected to its facing surface. The two adjacent second mounting seats 402e are rotatably connected by the same mounting rod 406a. A guide plate 406 is fixedly connected to the center of the outer wall of the mounting rod 406a. The guide plate 406 is located below the protective frame 404 and is set at an angle. A torsion spring 406b is sleeved on the outer side of the mounting rod 406a. The two ends of the torsion spring 406b are fixedly connected to the outer walls of the second mounting seat 402e and the guide plate 406 on both sides, respectively.

[0048] The rest of the structure is the same as in Example 1.

[0049] The operation process of this embodiment is as follows: When the cover plate is damaged, the stones and other debris fall onto the protective net 405 under the action of gravity. Part of the external force on the protective frame 404 and the protective net 405 is transmitted to the buffer spring 403 through the movable plate 402. The elasticity of the buffer spring 403 provides a buffer protection for the protective frame 404 and the protective net 405, preventing the protective net 405 from being damaged due to excessive external force. At the same time, the protective net 405 prevents the stones and other debris from directly contacting the cables in the cable trench body 1.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, enabling those skilled in the art to better understand and utilize it.

Claims

1. A prefabricated cable trench comprising a cable trench body (1) and a trench cover (2), characterized in that: The inner side of the cable trench body (1) is provided with mounting grooves (101) on both the upper and lower sides, and a groove (102) is provided on one side of the cable trench body (1). A slot (103) is provided in the groove (102), and a sealing component (3) is provided inside the groove (102). The sealing component (3) includes a mounting frame (301) fixedly connected in the mounting groove (101) and a mounting bracket (304) located in the groove (102). A first mounting bracket is movably connected in the mounting frame (301). The slider (301a) has an L-shaped plate (302) fixedly connected to its end face outside the mounting frame (301). Each vertical support arm of the L-shaped plate (302) has a locking block (302a) fixedly connected to it. Each vertical support arm of the mounting bracket (304) has a through groove (304b), and a locking plate (305) passes through the inside of the through groove (304b). One end of the locking plate (305) is fitted into the slot (103) with a clearance. The other end of the mounting bracket (304) is fixedly connected to a U-shaped frame (305a) that cooperates with the locking block (302a). A water-swellable rubber strip (306) is fixedly connected to one side of the outer wall of the mounting bracket (304), and the water-swellable rubber strip (306) is located inside the groove (102). A protective component (4) is also provided above the inside of the cable trench body (1), and the protective component (4) includes an L-shaped frame (401) fixedly connected to the upper side of the inner side of the cable trench body (1). The L-shaped frame (401) has... A connecting rod (402a) runs through the longitudinal support arm, and a movable plate (402) is fixedly connected to the top of the connecting rod (402a). A buffer spring (403) is sleeved on the outside of the connecting rod (402a), and the two ends of the buffer spring (403) are fixedly connected to the facing surfaces of the L-shaped frame (401) and the movable plate (402), respectively. A protective frame (404) is fixedly connected to the upper surface of the movable plate (402), and a protective net (405) is fixedly connected inside the protective frame (404).

2. A preformed cable trough according to claim 1, wherein, A protrusion (104) is fixedly connected to the other side of the cable trench body (1), and the protrusion (104) and the groove (102) cooperate with each other.

3. A prefabricated cable trench according to claim 1, characterized in that, A positioning post (301b) is fixedly connected to one side of the outer wall of the first slider (301a), and the end of the positioning post (301b) away from the first slider (301a) extends to the outside of the mounting frame (301) and is clearance-fitted into the positioning hole (304a) located on the vertical support arm of the mounting bracket (304). A return spring (301c) is fixedly connected to the other side of the outer wall of the first slider (301a), and the end of the return spring (301c) away from the first slider (301a) is fixedly connected to one side of the inner wall of the mounting frame (301).

4. A prefabricated cable trench according to claim 1, characterized in that, Rubber posts (301d) are fixedly connected to the inner wall of one side of the mounting frame (301) and the outer wall of the other side of the first slider (301a), and the rubber posts (301d) are located inside the return spring (301c).

5. A prefabricated cable trench according to claim 1, characterized in that, The inner side of the cable trench body (1) is rotatably connected to a threaded rod (303) via a first mounting base (303a), and a knob (303b) is fixedly connected to one end of the threaded rod (303). A second slider (303c) is threadedly connected to the outer wall of the threaded rod (303), and the end of the L-shaped plate (302) away from the first slider (301a) is fixedly connected to the top and bottom of the second slider (303c).

6. A prefabricated cable trench according to claim 1, characterized in that, The bottom end of the connecting rod (402a) is threadedly connected to a limiting nut (402b), and the limiting nut (402b) is located below the longitudinal support arm of the L-shaped frame (401).

7. A prefabricated cable trench according to claim 1, characterized in that, The upper surface of each movable plate (402) is fixedly connected with a fixing rod (402c), and the top of the fixing rod (402c) passes through the surface of the protective frame (404) and is threaded with a fastening nut (402d).

8. A prefabricated cable trench according to claim 1, characterized in that, Each of the adjacent movable plates (402) is fixedly connected to a second mounting base (402e) on its facing surface, and the two adjacent second mounting bases (402e) are rotatably connected to the same mounting rod (406a). A guide plate (406) is fixedly connected to the center of the outer wall of the mounting rod (406a), and the guide plate (406) is located below the protective frame (404) and is inclined. A torsion spring (406b) is sleeved on the outer side of the mounting rod (406a), and the two ends of the torsion spring (406b) are fixedly connected to the outer walls of the second mounting base (402e) and the guide plate (406) on both sides, respectively.

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