Underground power transmission structure based on self-healing concrete

Abstract

The invention discloses an underground power transmission structure based on self-healing concrete, and relates to the technical field of underground power transmission, the underground power transmission structure comprises a self-healing concrete pipe gallery and a plurality of stringing assemblies arranged in a staggered manner, each stringing assembly comprises a fixed frame rod, a movable frame rod and a plurality of cable supports, the fixed frame rod is fixedly mounted on the side wall of the self-healing concrete pipe gallery, and the movable frame rod is fixedly mounted on the side wall of the self-healing concrete pipe gallery. The movable frame rod is movably connected to the fixed frame rod, a mounting station attached to the side wall of the self-healing concrete pipe gallery and a preparation station contained in a groove in the bottom ground of the self-healing concrete pipe gallery are arranged in the moving stroke of the movable frame rod, and the cable supports are sequentially and movably connected to the movable frame rod. And a storage station which is folded and stored on the movable frame rod and a supporting station which is vertical to the cable bracket are arranged in the moving stroke of the cable bracket. The width of the self-healing concrete pipe gallery is small, the material consumption is reduced, meanwhile, the narrow pipe gallery has better strength, and the construction cost of an underground power transmission structure is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of underground power transmission, and in particular to an underground power transmission structure based on self-healing concrete. Background Art

[0002] In order to ensure the durability of underground transmission corridors, self-healing concrete materials are gradually being used for their construction. The advantage is that the self-healing concrete corridors, with the assistance of groundwater, can partially fill the cracked parts and joints of the structure, thereby solving the defects of ordinary concrete such as cracking that reduce the durability of the structure. The corridor is equipped with wiring components for accommodating transmission cables, electrical pipelines, etc.

[0003] The patent with announcement number CN214738254U discloses a comprehensive trench structure for laying urban water and electricity lines, including a trench body, a first supporting plate is vertically provided on the inner wall of the trench body, a plurality of supporting plates are slidably provided on the first supporting plate, a first locking rod is slidably provided inside the support plate, the first supporting plate is provided with a plurality of first locking holes for inserting the first locking rod along the height direction of the first supporting plate, and a driving assembly for driving the first locking rod to move is provided on the first supporting plate.

[0004] The patent with announcement number CN213014361U discloses a waterproof underground integrated pipe gallery, including a bottom plate, side walls are respectively provided on the left and right sides of the bottom plate, and a top plate is fixedly connected to the top of the side wall, and the top plate, side wall and bottom plate form a cylindrical structure; the inner side wall of the side wall located on the left side of the bottom plate is provided with at least one horizontal row of cable racks, and the right side of the cable rack is provided with an upwardly bent baffle; the inner side wall of the side wall located on the right side of the bottom plate is also provided with at least one horizontal row of several pipe support frames, each of the pipe support frames includes a support pipe, and a reinforcing pipe is also provided at the bottom of the support pipe.

[0005] In the prior art such as the above patent, the cable brackets supporting the cables are all fixedly installed on the side walls of the pipe gallery. The common way to lay the cables is that the vehicle drives in the pipe gallery, and the cable reels on the vehicle release the cables in batches at the same time, so that the cables are laid on the cable brackets. Since the vehicle for laying the cables needs to drive in the pipe gallery, and the cable brackets extend from the side walls of the pipe gallery to the middle of the pipe gallery, the pipe gallery will be designed to be relatively wide, which requires the material consumption and structural strength of the pipe gallery to be improved, resulting in high production costs for the pipe gallery. Summary of the invention

[0006] The purpose of the present invention is to provide an underground power transmission structure based on self-healing concrete to solve the deficiencies in the above-mentioned prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an underground power transmission structure based on self-healing concrete, comprising a self-healing concrete pipe gallery and a plurality of staggered line-hanging assemblies, each of which comprises: a fixed rack, which is fixedly mounted on the side wall of the self-healing concrete pipe gallery; a movable rack, which is movably connected to the fixed rack, and has an installation position that fits along the side wall of the self-healing concrete pipe gallery and a preparation position accommodated in a groove on the bottom ground of the self-healing concrete pipe gallery during its movement; a plurality of cable holders, which are movably connected to the movable rack in turn, and have a storage position that is folded and stored on the movable rack and a supporting position perpendicular to the cable holder during its movement; when the movable rack is located at the preparation position and each cable holder is located at the storage position, cables are laid along the bottom ground of the self-healing concrete pipe gallery, and then each cable holder is switched to the supporting position and the movable rack is switched to the installation position.

[0008] Furthermore, a first slide groove is provided on the fixed frame rod along the height direction, and one end of the movable frame rod is fixedly connected to a first cylindrical rod, and the first cylindrical rod is slidably and rotatably connected in the first slide groove.

[0009] Furthermore, a first hook is fixedly connected to the first cylindrical rod.

[0010] Furthermore, a second slide groove is provided on the movable frame rod along the length direction, and one end of the cable bracket is fixedly connected to a second cylindrical rod, and the second cylindrical rod is slidably and rotatably connected in the second slide groove.

[0011] Furthermore, the cable bracket has a second hook ring at one end away from the second cylindrical rod.

[0012] Furthermore, connecting rods are rotatably connected between the second cylindrical rods on a plurality of adjacent cable brackets.

[0013] Furthermore, a first through hole is provided on one end of the cable bracket close to the second cylindrical rod, a telescopic rod is installed on the cable bracket, the telescopic portion of the elastic telescopic rod is movably inserted into the first through hole, and a second through hole is provided on the movable rack rod. When the cable bracket is located at the supporting position, the telescopic portion of the elastic telescopic rod passes through the first through hole and the second through hole at the same time to lock the cable bracket and the movable rack rod.

[0014] Furthermore, an inclined guide groove is provided on the movable rack, one end of the guide groove coincides with the second through hole, and the telescopic portion of the elastic telescopic rod is movably arranged in the guide groove; the cable holder has a transition position inclined to the cable holder during the process of moving from the storage position to the supporting position. After the cables are laid on the bottom ground of the self-healing concrete pipe gallery, each cable holder is first moved from the storage position to the transition position, and then the movable rack is switched from the preparation position to the installation position. The cable holder is automatically moved from the transition position to the supporting position under the pressure of the cables thereon.

[0015] Furthermore, the side walls of the self-healing concrete pipe gallery are provided with embedded parts.

[0016] Furthermore, drainage ditches are arranged on both sides of the bottom of the self-healing concrete pipe gallery along the length direction.

[0017] In the above technical scheme, the present invention provides an underground power transmission structure based on self-healing concrete. Through the cooperation between the movable rack, the fixed rack and each cable bracket, each cable bracket can sink into the groove on the bottom ground of the self-healing concrete pipe gallery, so that each bracket will not hinder the driving of the vehicle that transmits the cable. The width of the self-healing concrete pipe gallery can be designed to be narrower, and the vehicle lays the cable on the bottom ground, which is more stable than directly laying the cable on the overhead cable bracket. After the cable is laid, the vehicle will leave the pipe gallery, and then switch each cable bracket to the supporting position and switch the movable rack to the installation position, and each cable bracket can be fixed to the side wall of the pipe gallery. Compared with the prior art, the width of the self-healing concrete pipe gallery in the present invention is smaller, the material consumption is reduced, and the narrower pipe gallery has better strength, which significantly reduces the construction cost of the underground power transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.

[0019] Figure 1 A schematic diagram of the structure provided for an embodiment; Figure 2 A schematic diagram of the structure of laying cables provided in an embodiment; Figure 3 A schematic diagram of the structure of the cable provided in the embodiment when installation is completed; Figure 4 A schematic diagram of the structure of the cable support provided in the embodiment when it is located at the transition station; Figure 5 A schematic diagram of the structure of the movable frame rod provided in the embodiment when it is lifted; Figure 6 A schematic diagram of the structure of a wiring assembly before laying cables provided in an embodiment; Figure 7 A schematic diagram of the structure of the wiring assembly after the cable is installed provided in the embodiment; Figure 8 A schematic diagram of a partial structure of a wiring assembly after the cable is installed provided in an embodiment; Fig. 9 A front view of the split structure of the movable rack rod and the cable bracket provided in the embodiment; Fig.10A rear view of the split structure of the movable rack rod and the cable bracket provided in the embodiment; Fig.11 Schematic diagrams of various forms of the cable support provided in the embodiment on the movable rack; Fig.12 A schematic diagram of the connection structure between the elastic telescopic rod and the cable bracket provided in the embodiment; Fig.13 A schematic structural diagram of embedded parts on the side wall of a self-healing concrete pipe gallery provided in an embodiment.

[0020] Description of reference numerals: 1. Self-healing concrete pipe gallery; 11. Groove; 12. Drainage ditch; 13. Embedded bolts; 14. Embedded nuts; 2. Wire assembly; 21. Fixed rack; 211. First slide groove; 22. Movable rack; 221. First cylindrical rod; 222. First hook ring; 223. Second slide groove; 224. Second through hole; 225. Guide groove; 23. Cable bracket; 231. Second cylindrical rod; 232. Second hook ring; 233. First through hole; 24. Elastic telescopic rod. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] See also Figure 1-Figure 13 An embodiment of the present invention provides an underground power transmission structure based on self-healing concrete, including a self-healing concrete pipe gallery 1 and a plurality of staggered wiring components 2. The self-healing concrete pipe gallery 2 is a pipe gallery structure cast by self-healing slow-setting soil. With the assistance of groundwater, the self-healing concrete pipe gallery 2 can automatically fill the cracked parts and joint parts of the structure locally, thereby solving the defects of ordinary concrete cracking and other defects that reduce the durability of the structure. For example, the self-healing concrete contains substances such as calcium hydroxide, silicate minerals, and iron hydroxide, while the groundwater contains substances such as carbonates, silicates and / or iron ions. Calcium hydroxide can react with carbonates to produce calcium carbonate deposits that can fill and seal microcracks in the concrete.

[0023] The side wall of the self-healing concrete pipe gallery 1 is provided with embedded parts, see Fig.13 The embedded parts include a plurality of embedded bolts 13 and embedded nuts 14 embedded in the side walls. A groove 11 is opened on the bottom ground of the self-healing concrete corridor 1. The length direction of the groove 11 is perpendicular to the depth direction of the corridor. Drainage ditches 12 are respectively arranged on both sides of the bottom of the corridor along the length direction. Both ends of the groove 11 are connected to a drainage ditch 12 respectively.

[0024] Each cable stringing assembly 2 includes a fixed rack 21, a movable rack 22 and a plurality of cable brackets 23. The fixed rack 21 is fixedly mounted on the side wall of the self-healing concrete pipe gallery 1, specifically, the fixed rack 21 is fixedly mounted on the embedded bolts 13 on the side wall through locking nuts.

[0025] The movable frame rod 22 is movably connected to the fixed frame rod 21. Preferably, a first slide groove 211 is opened on the fixed frame rod 21 along the height direction. One end of the movable frame rod 22 is fixedly connected to a first cylindrical rod 221. The first cylindrical rod 221 is located in the first slide groove 211 and is slidably and rotatably connected to the first slide groove 211. A first hook ring 222 is fixedly connected to the first cylindrical rod 221. The movable stroke of the movable frame rod 22 includes an installation station that rises along the height direction to fit along the side wall of the self-healing concrete pipe gallery 1, and a preparation station accommodated in the groove 11 on the bottom ground of the self-healing concrete pipe gallery 1.

[0026] Each cable bracket 23 is movably connected to the movable frame rod 22 in sequence. In this embodiment, four cable brackets 23 are arranged on one movable frame rod 22. A second slide groove 223 is provided on the movable frame rod 22 along the length direction. One end of the cable bracket 23 is fixedly connected to a second cylindrical rod 231. The second cylindrical rod 231 is slidably and rotatably connected in the second slide groove 223. The end of the cable bracket 23 away from the second cylindrical rod 231 is provided with a second hook ring 232. Each cable bracket 23 has a storage position folded and stored on the movable frame rod 22 and a support position perpendicular to the cable bracket 23 in the movable travel. The fixed frame rod 21, the movable frame rod 22 and each cable bracket 23 are all made of angle steel.

[0027] When the movable rack 22 is located at the preparation position and each cable bracket 23 is located at the storage position (such as Figure 1-Figure 2 ), the vehicle can smoothly drive on the bottom ground of the self-healing concrete pipe gallery 1, the width of the pipe gallery is slightly wider than the width of the vehicle and the cable drum, the vehicle lays the cable on the ground, and then, the second hook ring 232 on each cable bracket 23 is hooked by a tool and pulled upward, so that the cable bracket 23 moves to a supporting position perpendicular to the movable rack rod 22, and the first hook ring 222 on the movable rack rod 22 is hooked by a tool and lifted upward, so that the movable rack rod 22 is switched to the installation position (such as Figure 3 ).

[0028] In the above technical scheme, the present invention provides an underground power transmission structure based on self-healing concrete. Through the cooperation between the movable frame rod 22, the fixed frame rod 21 and each cable bracket 23, each cable bracket 23 can sink into the groove 11 on the bottom ground of the self-healing concrete pipe gallery 1, so that each bracket will not hinder the driving of the vehicle that transmits the cable. The width of the self-healing concrete pipe gallery 1 can be designed to be narrower, and the vehicle lays the cable on the bottom ground, which is more stable than directly laying the cable on the overhead cable bracket 23. After the cable is laid, the vehicle will leave the pipe gallery, and then switch each cable bracket 23 to the supporting position and switch the movable frame rod 22 to the installation position, and each cable bracket 23 can be fixed to the side wall of the pipe gallery. The width of the self-healing concrete pipe gallery 1 in the present invention is small, the material consumption is reduced, and the narrow pipe gallery has better strength, which significantly reduces the construction cost of the underground power transmission structure.

[0029] As a preferred technical solution, the second cylindrical rods 231 on several adjacent cable brackets 23 are rotatably connected with connecting rods, and the connecting rods can make two adjacent cable brackets 23 move synchronously. That is, when the working position of one of the cable brackets 23 is switched, the working position of the other cable bracket 23 will be driven to switch synchronously through the connecting rod.

[0030] See also Fig.12 In the present invention, a first through hole 233 is provided at one end of the cable support 23 near the second cylindrical rod 231, a telescopic rod is installed on the cable support 23, a telescopic portion of the elastic telescopic rod 24 is movably inserted into the first through hole 233, a second through hole 224 is provided on the movable frame rod 22, when the cable support 23 is located at the supporting position, the telescopic portion of the elastic telescopic rod 24 simultaneously passes through the first through hole 233 and the second through hole 224, thereby locking the cable support 23 and the movable frame rod 22, so that the cable support 23 is kept at the supporting position. The specific structure of the elastic telescopic rod 24 includes a sleeve rod, an inner rod and a spring, the sleeve rod is welded to the cable support 23, the inner rod is slidably connected in the sleeve rod, the inner rod is the telescopic portion, a limit bolt is screwed on one end of the sleeve rod away from the inner rod, the spring is located inside the sleeve rod, one end of the spring abuts against the limit bolt, and the other end abuts against the inner rod, when the elastic force of the spring is released, the inner rod will gradually slide out of the sleeve rod, so that the elastic telescopic rod 24 will be extended as a whole.

[0031] In another embodiment provided by the present invention, refer to Figure 8-Figure 11The movable frame rod 22 is provided with an inclined guide groove 225, one end of which coincides with the second through hole 224. The telescopic portion of the elastic telescopic rod 24 is movably arranged in the guide groove 225, that is, the telescopic portion abuts against the guide groove 225 and can slide along the guide groove 225, that is, the second cylindrical rod 231 on the cable support 23 slides in the second slide groove 223 while the telescopic portion on the elastic telescopic rod 24 slides in the guide groove 225. When the cable support 23 moves on the movable frame rod 22, it also has a transition station inclined to the cable support 23, and the cable support 23 passes through the transition station when it moves from the storage station to the support station.

[0032] During operation, after laying the cables on the bottom of the self-healing concrete pipe gallery 1; Figure 4 First, the second hook ring 232 is lifted by a tool to move each cable bracket 23 from the storage position to the transition position. The spring of the elastic telescopic rod 24 makes the telescopic part abut against the bottom of the guide groove 225. The friction between the telescopic part and the bottom of the guide groove 225 has the effect of maintaining the cable bracket 23 in the transition position. Then, the first hook ring 222 is lifted by a tool to move the movable rack rod 22 from the preparation position to the installation position. Figure 5 During this period, the cable holder 23 is automatically moved from the transition position to the supporting position by the pressure of the cables thereon, that is, the telescopic portion of the elastic telescopic rod 24 slides along the guide groove 225 to the second through hole 224, and the elastic force of the spring immediately causes the telescopic portion to pass through the second through hole, thereby locking the cable holder 23 and the movable rack rod 22, and the cable holder 23 located at the transition position plays a guiding role for each cable, guiding the cables on the movable rack rod 22 to slide onto the cable holder 23 in sequence, facilitating the subsequent installation of the cable clamp, and avoiding the situation in which the cables on the movable rack rod 22 all fall onto the cable holder 23, causing the cables to be squeezed against each other and the sequence to be disordered.

[0033] The above describes some exemplary embodiments of the present invention, which should not be understood as limiting the scope of protection of the claims of the present invention. For those skilled in the art, the described embodiments can be modified in other different ways without departing from the spirit and scope of the present invention.

Claims

1. An underground power transmission structure based on self-healing concrete, comprising a self-healing concrete pipe gallery (1) and a plurality of staggered wiring assemblies (2), characterized in that: Each stringing assembly (2) comprises: A fixed rack (21) fixedly mounted on a side wall of the self-healing concrete pipe gallery (1); A movable frame rod (22) is movably connected to the fixed frame rod (21), and has an installation position that fits along the side wall of the self-healing concrete pipe gallery (1) and a preparation position that is accommodated in a groove (11) on the bottom ground of the self-healing concrete pipe gallery (1); A plurality of cable supports (23) are movably connected to the movable frame rod (22) in sequence, and have a storage position for folding and storing on the movable frame rod (22) and a supporting position perpendicular to the cable supports (23) during their movable travel; When the movable rack (22) is located at the preparation position and each cable bracket (23) is located at the storage position, cables are laid along the bottom ground of the self-healing concrete pipe gallery (1), and then each cable bracket (23) is switched to the supporting position and the movable rack (22) is switched to the installation position.

2. The underground power transmission structure based on self-healing concrete according to claim 1, characterized in that: A first slide groove (211) is provided on the fixed frame rod (21) along the height direction, and one end of the movable frame rod (22) is fixedly connected to a first cylindrical rod (221), and the first cylindrical rod (221) is slidably and rotatably connected in the first slide groove (211).

3. The underground power transmission structure based on self-healing concrete according to claim 2 is characterized in that: A first hook ring (222) is fixedly connected to the first cylindrical rod (221).

4. The underground power transmission structure based on self-healing concrete according to claim 1, characterized in that: A second slide groove (223) is provided on the movable frame rod (22) along the length direction; one end of the cable support (23) is fixedly connected to a second cylindrical rod (231); the second cylindrical rod (231) is slidably and rotatably connected in the second slide groove (223).

5. The underground power transmission structure based on self-healing concrete according to claim 4, characterized in that: The cable support (23) has a second hook ring (232) on one end away from the second cylindrical rod (231).

6. The underground power transmission structure based on self-healing concrete according to claim 4, characterized in that: Connecting rods are rotatably connected between the second cylindrical rods (231) on a plurality of adjacent cable brackets (23).

7. The underground power transmission structure based on self-healing concrete according to claim 4, characterized in that: A first through hole (233) is provided on one end of the cable support (23) close to the second cylindrical rod (231); a telescopic rod is mounted on the cable support (23); a telescopic portion of the elastic telescopic rod (24) is movably inserted into the first through hole (233); a second through hole (224) is provided on the movable frame rod (22); when the cable support (23) is located at the supporting position, the telescopic portion of the elastic telescopic rod (24) simultaneously passes through the first through hole (233) and the second through hole (224) to lock the cable support (23) and the movable frame rod (22).

8. The underground power transmission structure based on self-healing concrete according to claim 7, characterized in that: The movable rack rod (22) is provided with an inclined guide groove (225), one end of the guide groove (225) coincides with the second through hole (224), and the telescopic portion of the elastic telescopic rod (24) is movably arranged in the guide groove (225); the cable holder (23) has a transition position inclined to the cable holder (23) during the process of moving from the storage position to the support position; after the cables are laid on the bottom ground of the self-healing concrete pipe gallery (1), each cable holder (23) is first moved from the storage position to the transition position, and then the movable rack rod (22) is switched from the preparation position to the installation position. The cable holder (23) is automatically moved from the transition position to the support position under the pressure of the cables thereon.

9. The underground power transmission structure based on self-healing concrete according to claim 1, characterized in that: The side wall of the self-healing concrete pipe gallery (1) is provided with embedded parts.

10. The underground power transmission structure based on self-healing concrete according to claim 1, characterized in that: Drainage ditches (12) are provided on both sides of the bottom of the self-healing concrete pipe gallery (1) along the length direction.

Images