An underground power transmission structure based on self-healing concrete

Abstract

The present invention discloses an underground power transmission structure based on self-healing concrete, which relates to the technical field of underground power transmission. It includes a self-healing concrete utility tunnel and a number of wire laying components arranged in an interleaved manner. Each wire laying component includes a fixed support rod, a movable support rod, and a plurality of cable brackets. The fixed support rod is fixedly installed on the side wall of the self-healing concrete utility tunnel, the movable support rod is movably connected to the fixed support rod, and in the moving stroke of the movable support rod, there is an installation station that fits onto the side wall of the self-healing concrete utility tunnel, and a preparatory station that is accommodated in a groove on the bottom ground of the self-healing concrete utility tunnel. Each cable bracket is sequentially movably connected to the movable support rod, and in the moving stroke of the cable bracket, there is a storage station where it is folded and stored on the movable support rod and a supporting station perpendicular to the cable bracket. In the present invention, the width of the self-healing concrete utility tunnel is smaller, the material consumption is reduced, and at the same time, the narrower utility tunnel has better strength, significantly reducing the construction cost of the underground power transmission structure.

Description

Technical Field

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

[0002] In order to ensure its own durability, underground power transmission pipe galleries are gradually made of self-healing concrete materials at present. The advantage is that with the assistance of groundwater, the self-healing concrete pipe gallery can locally fill the cracked parts and joint parts of the structure by itself, thus solving the defects such as the cracking of ordinary concrete that reduce the structural durability. The wire rack components for placing power transmission cables, electrical pipelines, etc. are provided inside the pipe gallery.

[0003] The patent with the publication number of CN214738254U discloses a comprehensive pipe gallery structure for urban water and electricity line layout, including a pipe gallery body. A first supporting plate is vertically arranged on the inner side wall of the pipe gallery body. A plurality of supporting plates are slidably arranged on the first supporting plate. A first locking rod is slidably arranged inside the supporting plate. A plurality of first locking holes for inserting the first locking rod are formed in the first supporting plate along the height direction of the first supporting plate. A driving component for driving the first locking rod to move is arranged on the first supporting plate.

[0004] The patent with the publication number of CN213014361U discloses a waterproof underground comprehensive pipe gallery, including a bottom plate. Side walls are respectively arranged on the left and right sides of the bottom plate. The top of the side wall is fixedly connected with a top plate. The top plate, the side wall and the bottom plate enclose a cylindrical structure. At least one horizontal row of cable racks is arranged on the inner side wall of the side wall on the left side of the bottom plate. A baffle that bends upward is arranged on the right side of the cable rack. At least one horizontal row of a plurality of pipe support frames is also arranged on the inner side wall of the side wall on the right side of the bottom plate. Each of the pipe support frames includes a support pipe, and a reinforcing pipe is also arranged at the bottom of the support pipe.

[0005] In the prior art such as the above patents, the cable brackets for supporting cables are all fixedly installed on the side walls of the pipe gallery. The common way to lay cables is that a vehicle travels in the pipe gallery, and each cable reel on the vehicle releases cables in batches at the same time, so as to lay each cable on the cable bracket. Since the vehicle for laying cables needs to travel in the pipe gallery, and in addition, the cable bracket extends from the side wall of the pipe gallery to the middle of the pipe gallery, the pipe gallery will be designed to be relatively wide, so the material consumption and structural strength of the pipe gallery need to be improved, resulting in high production costs of 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 prior art.

[0007] To achieve the above object, the present invention provides the following technical solution: An underground power transmission structure based on self-healing concrete, comprising a self-healing concrete pipe gallery and a plurality of wire laying components arranged alternately. Each wire laying component includes: a fixed support rod fixedly installed on the side wall of the self-healing concrete pipe gallery; a movable support rod movably connected to the fixed support rod, having an installation position where it fits against the side wall of the self-healing concrete pipe gallery during its movement stroke, and a preparatory position where it is placed in a groove on the bottom ground of the self-healing concrete pipe gallery; a plurality of cable supports movably connected to the movable support rod in sequence, having a storage position where they are folded and stored on the movable support rod and a supporting position perpendicular to the cable supports during their movement stroke; when the movable support rod is in the preparatory position and each cable support is in the storage position, cables are laid along the bottom ground of the self-healing concrete pipe gallery, and then each cable support is switched to the supporting position and the movable support rod is switched to the installation position.

[0008] Further, a first sliding groove is formed in the fixed support rod in the height direction, and one end of the movable support rod is fixedly connected with a first cylindrical rod, and the first cylindrical rod is slidably and rotatably connected in the first sliding groove.

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

[0010] Further, a second sliding groove is formed in the movable support rod in the length direction, and one end of the cable support is fixedly connected with a second cylindrical rod, and the second cylindrical rod is slidably and rotatably connected in the second sliding groove.

[0011] Further, the end of the cable support far from the second cylindrical rod has a second hook ring.

[0012] Further, connecting rods are respectively rotatably connected between the second cylindrical rods on several adjacent cable supports.

[0013] Further, a first through hole is formed at the end of the cable support close to the second cylindrical rod, and a telescopic rod is installed on the cable support. The telescopic part of the elastic telescopic rod movably passes through the first through hole, and a second through hole is formed in the movable support rod. When the cable support is in the supporting position, the telescopic part of the elastic telescopic rod simultaneously passes through the first through hole and the second through hole to lock the cable support and the movable support rod.

[0014] Further, an inclined guide groove is formed in the movable support rod, and one end of the guide groove coincides with the second through hole. The telescopic part of the elastic telescopic rod is movably arranged in the guide groove; during the process of the cable support moving from the storage position to the supporting position, there is a transition position inclined to the cable support. After laying the cables on the bottom ground of the self-healing concrete pipe gallery, first move each cable support from the storage position to the transition position, and then during the process of switching the movable support rod from the preparatory position to the installation position, the cable support is automatically moved from the transition position to the supporting position under the pressure of the cables thereon.

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

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

[0017] In the above technical solution, for an underground power transmission structure based on self-healing concrete provided by the present invention, through the cooperation among the movable support rods, fixed support rods and each cable support, each cable support can sink into the groove on the bottom ground of the self-healing concrete pipe gallery, so that each support will not block the driving of the vehicle for transporting cables. Thus, the width of the self-healing concrete pipe gallery can be designed to be relatively narrow. And the vehicle lays the cables on the bottom ground, which is more stable than directly laying the cables on the overhead cable supports. After the cables are laid, the vehicle drives away from the pipe gallery. Then, each cable support is switched to the supporting working position and the movable support rod is switched to the installation working position, and each cable support is 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 at the same time, the relatively narrow pipe gallery has better strength, significantly reducing the construction cost of the underground power transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to describe the technical solutions in the embodiments of the present application or the prior art more clearly, the following will briefly introduce the drawings required in the embodiments.

[0019] Figure 1 It is a structural schematic diagram provided for the embodiment;

[0020] Figure 2 It is a structural schematic diagram when laying cables provided for the embodiment;

[0021] Figure 3 It is a structural schematic diagram when the cable installation is completed provided for the embodiment;

[0022] Figure 4 It is a structural schematic diagram when the cable support is in the transition working position provided for the embodiment;

[0023] Figure 5 It is a structural schematic diagram when the movable support rod is lifted provided for the embodiment;

[0024] Figure 6 It is a structural schematic diagram of the wire laying assembly before laying cables provided for the embodiment;

[0025] Figure 7 It is a structural schematic diagram of the wire laying assembly after installing cables provided for the embodiment;

[0026] Figure 8Partial structural schematic diagram of the wire erection assembly after installing the cable for the embodiment;

[0027] Figure 9 Front view of the split structure of the movable pole and the cable support for the embodiment;

[0028] Figure 10 Rear view of the split structure of the movable pole and the cable support for the embodiment;

[0029] Figure 11 Schematic diagrams of various forms of the cable support on the movable pole for the embodiment;

[0030] Figure 12 Schematic diagram of the connection structure between the elastic telescopic rod and the cable support for the embodiment;

[0031] Figure 13 Schematic diagram of the structure of the embedded parts on the side wall of the self-healing concrete pipe gallery for the embodiment.

[0032] Explanation of reference numerals:

[0033] 1. Self-healing concrete pipe gallery; 11. Groove; 12. Drainage ditch; 13. Embedded bolt; 14. Embedded nut; 2. Wire erection assembly; 21. Fixed pole; 211. First chute; 22. Movable pole; 221. First cylindrical rod; 222. First hook ring; 223. Second chute; 224. Second through hole; 225. Guide groove; 23. Cable support; 231. Second cylindrical rod; 232. Second hook ring; 233. First through hole; 24. Elastic telescopic rod. Detailed implementation manners

[0034] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Please refer to Figures 1-13 , a kind of underground power transmission structure based on self-healing concrete provided by the embodiment of the present invention includes a self-healing concrete pipe gallery 1 and a plurality of wire erection assemblies 2 arranged alternately. The self-healing concrete pipe gallery 2 is a pipe gallery structure formed by pouring self-healing retarder concrete. With the assistance of groundwater, the self-healing concrete pipe gallery 2 can locally fill the cracked parts and joint parts of the structure by itself, thereby solving the defects such as the cracking of ordinary concrete that reduce the durability of the structure. For example, the self-healing concrete contains substances such as calcium hydroxide, silicate minerals, and iron hydroxide, and the groundwater contains substances such as carbonate, silicate, and / or iron ions. Calcium hydroxide can react with carbonate to produce calcium carbonate deposits that can fill and seal the microcracks in the concrete.

[0036] Embedded parts are provided on the side wall of the self-healing concrete pipe gallery 1. Refer to Figure 13, the embedded parts include a plurality of embedded bolts 13 and embedded nuts 14 embedded in the side wall. A groove 11 is provided on the bottom ground of the self-healing concrete pipe gallery 1. The length direction of the groove 11 is perpendicular to the depth direction of the pipe gallery. Drainage ditches 12 are respectively arranged on both sides of the bottom of the pipe gallery along the length direction. Both ends of the groove 11 are communicated with one drainage ditch 12 respectively.

[0037] Each wire laying component 2 includes a fixed support rod 21, a movable support rod 22 and a plurality of cable brackets 23. The fixed support rod 21 is fixedly installed on the side wall of the self-healing concrete pipe gallery 1. Specifically, the fixed support rod 21 is fixedly installed on the embedded bolt 13 on the side wall through a locking nut.

[0038] The movable support rod 22 is movably connected to the fixed support rod 21. Preferably, a first sliding groove 211 is provided on the fixed support rod 21 along the height direction. One end of the movable support rod 22 is fixedly connected with a first cylindrical rod 221. The first cylindrical rod 221 is located in the first sliding groove 211 and is slidably and rotatably connected with the first sliding groove 211. A first hook ring 222 is fixedly connected to the first cylindrical rod 221. During the movement stroke of the movable support rod 22, there is an installation position where it rises along the height direction and fits onto the side wall of the self-healing concrete pipe gallery 1, and a preparatory position where it is accommodated in the groove 11 on the bottom ground of the self-healing concrete pipe gallery 1.

[0039] Each cable bracket 23 is sequentially movably connected to the movable support rod 22. In this embodiment, four cable brackets 23 are arranged on one movable support rod 22. A second sliding groove 223 is provided on the movable support rod 22 along the length direction. One end of the cable bracket 23 is fixedly connected with a second cylindrical rod 231. The second cylindrical rod 231 is slidably and rotatably connected in the second sliding groove 223. One end of the cable bracket 23 far from the second cylindrical rod 231 has a second hook ring 232. During the movement stroke of each cable bracket 23, there is a storage position where it is folded and stored on the movable support rod 22 and a supporting position perpendicular to the cable bracket 23. The fixed support rod 21, the movable support rod 22 and each cable bracket 23 are all made of angle steel materials.

[0040] When the movable support rod 22 is in the preparatory position and each cable bracket 23 is in the storage position (as Figures 1-2 ), the vehicle can drive smoothly 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 reel. The vehicle lays the cable on the ground. Then, a tool hooks the second hook ring 232 on each cable bracket 23 and pulls it upward, so that the cable bracket 23 moves and switches to the supporting position perpendicular to the movable support rod 22, and a tool hooks the first hook ring 222 on the movable support rod 22 and lifts it upward, so that the movable support rod 22 moves and switches to the installation position (as Figure 3 ).

[0041] In the above technical solution, a kind of underground power transmission structure based on self-healing concrete provided by the present invention, through the cooperation among the movable support rod 22, the fixed support rod 21 and each cable support 23, each cable support 23 can sink into the groove 11 on the bottom ground of the self-healing concrete pipe gallery 1, so that each support will not block the driving of the vehicle for transporting cables. Thus, the width of the self-healing concrete pipe gallery 1 can be designed to be relatively narrow. And the vehicle lays the cables on the bottom ground, which is more stable than directly laying the cables on the overhead cable support 23. After the cable laying is completed, the vehicle drives away from the pipe gallery. Then, each cable support 23 is switched to the supporting position and the movable support rod 22 is switched to the installation position, and each cable support 23 is fixed to the side wall of the pipe gallery. In the present invention, the width of the self-healing concrete pipe gallery 1 is smaller, the material consumption is reduced, and at the same time, the relatively narrow pipe gallery has better strength, significantly reducing the construction cost of the underground power transmission structure.

[0042] As a preferred technical solution, connecting rods are respectively rotatably connected between the second cylindrical rods 231 on several adjacent cable supports 23. The connecting rods can make the adjacent two cable supports 23 act synchronously, that is, when switching the position of one cable support 23, the position of the other cable support 23 will be synchronously switched through the connecting rod.

[0043] Refer to Figure 12 , in the present invention, a first through hole 233 is opened at one end of the cable support 23 close to the second cylindrical rod 231. An expansion rod is installed on the cable support 23. The telescopic part of the elastic expansion rod 24 movably penetrates through the first through hole 233. A second through hole 224 is opened on the movable support rod 22. When the cable support 23 is in the supporting position, the telescopic part of the elastic expansion rod 24 simultaneously penetrates through the first through hole 233 and the second through hole 224, thereby locking between the cable support 23 and the movable support rod 22 and keeping the cable support 23 in the supporting position. The specific structure of the elastic expansion rod 24 includes a sleeve rod, an inner rod and a spring. The sleeve rod is welded on the cable support 23. The inner rod is slidably connected in the sleeve rod. The inner rod is the telescopic part. A limit bolt is screwed at 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 expansion rod 24 will elongate as a whole.

[0044] In another embodiment provided by the present invention, refer to Figures 8-11The movable support rod 22 is provided with an inclined guide groove 225. One end of the guide groove coincides with the second through hole 224. The telescopic part of the elastic telescopic rod 24 is movably arranged in the guide groove 225, that is, the telescopic part abuts against the guide groove 225 and can slide along the guide groove 225. That is to say, while the second cylindrical rod 231 on the cable support 23 slides in the second chute 223, the telescopic part on the elastic telescopic rod 24 slides in the guide groove 225. When the cable support 23 moves on the movable support rod 22, there is also a transition station inclined to the cable support 23. The cable support 23 passes through this transition station during the process of moving from the storage station to the support station.

[0045] During operation, after laying cables on the bottom ground of the self-healing concrete pipe gallery 1; refer to Figure 4 , first, use a tool to lift the second hook 232 to move each cable support 23 from the storage station to the transition station. The spring of the elastic telescopic rod 24 presses the telescopic part against the bottom of the guide groove 225. The frictional force between the telescopic part and the bottom of the guide groove 225 has the effect of maintaining the cable support 23 at the transition station; then use a tool to lift the first hook 222 to move the movable support rod 22 from the preparatory station to the installation station, refer to Figure 5 . During this period, the cable support 23 automatically moves from the transition station to the support station under the pressure of the cables on it, that is, the telescopic part of the elastic telescopic rod 24 slides along the guide groove 225 to the second through hole 224. The elastic force of the spring immediately causes the telescopic part to pass through the second through hole, thereby locking the cable support 23 and the movable support rod 22. And the cable support 23 located at the transition station plays a guiding role for each cable, guiding each cable on the movable support rod 22 to slide onto the cable support 23 in sequence, which is convenient for subsequent installation of cable clamps and avoids the situation where each cable on the movable support rod 22 falls onto the cable support 23 all at once, causing mutual extrusion and disorder of the cables.

[0046] The above describes some exemplary embodiments of the present invention and should not be construed as limiting the scope of protection of the claims of the present invention. For those skilled in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in other different ways.

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; 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); A first through hole (233) is provided on one end of the cable support (23) close to the second cylindrical rod (231); an elastic telescopic rod (24) 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 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); 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 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.

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: The cable support (23) has a second hook ring (232) on one end away from the second cylindrical rod (231).

5. The underground power transmission structure based on self-healing concrete according to claim 1, characterized in that: Connecting rods are rotatably connected between the second cylindrical rods (231) on a plurality of adjacent cable brackets (23).

6. 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.

7. 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.

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