Modularized electric pole foundation structure

Abstract

The utility model discloses a modularization electric pole foundation structure which comprises an electric pole and a fixing cylinder arranged on the outer side of the electric pole in a sleeved mode, the fixing cylinder comprises at least one sleeve unit, the adjacent sleeve units are connected with each other, and each sleeve unit comprises a left sleeve and a right sleeve which are spliced with each other. The sleeve unit is divided into an annular cavity and a cylindrical cavity through the left sleeve and the right sleeve which are spliced with each other, the cylindrical cavity is used for allowing a pole to be inserted in, and a stopping unit is arranged at the bottom of the fixing barrel. The fixing barrel is arranged, the cylindrical cavity and the annular cavity are formed in the fixing barrel, and the cylindrical cavity is used for allowing the pole to be inserted in; and the remaining space in the annular cavity is used for being filled with concrete mortar, it can be guaranteed that the electric pole foundation can bear long-term external loads, good structural reliability is achieved, and therefore a traditional distribution network tower foundation adopting a wet operation mode of cast-in-place can be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of foundations for transmission lines, and particularly to a modular pole foundation structure. Background Art

[0002] In recent years, the power grid construction has developed rapidly, and the distribution network projects are in a dominant position. Electric poles are the common pole types used in the overhead lines of the distribution network and are important components in the transmission lines. The traditional construction of the distribution network pole foundation often adopts the "wet operation" method of on-site pouring. The reason why it is called "wet operation" is that this method requires directly mixing the raw materials of concrete, such as cement, sand, aggregate (crushed stone or gravel) and water, at the construction site to form wet concrete, and then pouring it into the pre-prepared formwork. Finally, the concrete solidifies in the formwork to form the foundation of the pole tower.

[0003] However, there are the following problems in the construction using the "wet operation" method: 1. The overall construction period of the project is long, and the construction period is difficult to control, making it difficult to meet the tasks of rapid construction; 2. It is greatly affected by the construction technology level of the construction team, and the construction quality is uneven, making it difficult to fully guarantee the construction quality; 3. It causes great damage to the operation site environment and does not meet the requirements of "environment-friendly" at the construction site.

[0004] The Chinese utility model patent with the publication number of CN210946867U discloses "a prefabricated and assembled pole foundation". The pole is clamped by two prefabricated pole foundations, connected by passing through the bolt holes with double-headed bolts, and tightened with gaskets and nuts, which can save time and reduce on-site labor. However, in bad weather or geological conditions, the connection part of the pole foundation is not as durable as the on-site poured concrete. Summary of the Utility Model

[0005] To solve the problems existing in the above-mentioned prior art, the utility model provides a modular pole foundation structure. By setting a fixing cylinder, a cylindrical cavity and an annular cavity are arranged in the fixing cylinder. The cylindrical cavity is used for the pole to be inserted. By respectively arranging strengthening blocks at the upper end and the lower end of the fixing cylinder, after the pole foundation is buried in the underground foundation pit, it can ensure that the pole foundation can bear the side-tilting moment of the pole and is not easily deformed, providing a structural guarantee for the workers to work on the pole. And the remaining space in the annular cavity is used to fill concrete mortar or fillers with a strength not lower than that of the dried concrete mortar, so as to ensure that the pole foundation can also bear long-term external loads and has good structural reliability, thereby replacing the traditional distribution network pole foundation that adopts the "wet operation" method of on-site pouring.

[0006] The technical solution of the utility model is as follows:

[0007] A modular pole foundation structure includes a pole and a fixing cylinder sleeved outside the pole. The fixing cylinder includes at least one sleeve unit, and adjacent sleeve units are connected to each other. The sleeve unit includes a left sleeve and a right sleeve that are spliced together. The left sleeve and the right sleeve that are spliced together divide the sleeve unit into an annular cavity and a cylindrical cavity for the pole to insert. A stop unit is provided at the bottom of the fixing cylinder.

[0008] Further, one end of the side surface of the left sleeve is provided with a first locking groove along the length direction of the fixing cylinder, a second locking head is fixedly arranged at the other end of the side surface of the left sleeve, a first locking head that is snap-fitted with the first locking groove is fixedly arranged on the side surface of the right sleeve, and a second locking groove that is snap-fitted with the second locking head is further provided on the side surface of the right sleeve.

[0009] Further, a connecting screw rod along the length direction of the fixing cylinder is penetrated through both the first locking head and the second locking head. The length of the connecting screw rod is equal to the height of the sleeve unit. A nut is fixedly connected to the top of the connecting screw rod, and the nut protrudes from the sleeve unit.

[0010] Further, positioning columns are respectively arranged at the tops of the left sleeve and the right sleeve, and positioning inner holes that are matched with the positioning columns are respectively provided at both ends of the left sleeve and the right sleeve.

[0011] Further, both the left sleeve and the right sleeve are provided with a hollow interior, and all the sleeve units are communicated with each other.

[0012] Further, at least two support rods are fixedly arranged inside both the left sleeve and the right sleeve, at least two strengthening blocks are arranged in a circular array at the top of the sleeve unit at the uppermost part of the fixing cylinder, strengthening blocks are arranged in a circular array at the top of the sleeve unit at the lowermost part of the fixing cylinder, and perfusion ports are formed between adjacent strengthening blocks.

[0013] Further, threaded holes are provided on the support rods, at least one screw rod is penetrated through each of the strengthening blocks, the screw rod is threadedly connected with the corresponding threaded hole, and a fixing ring is commonly connected above the strengthening blocks at the top of the fixing cylinder.

[0014] Further, at least two strengthening ribs are also fixedly arranged inside both the left sleeve and the right sleeve, and the strengthening ribs are arranged below the support rods.

[0015] Further, fastening nails are penetrated through the side walls of both the first locking groove and the second locking groove. The two fastening nails respectively penetrate the corresponding first locking head or second locking head and abut against the connecting screw rod.

[0016] Furthermore, the stop unit includes a bottom plate, a cross rib is fixedly arranged at the bottom of the bottom plate, and at least two weight reduction holes are formed in the bottom plate in a circular array.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The present utility model can be used as an underground foundation for an electric pole. By providing a fixing cylinder, a cylindrical cavity and an annular cavity are arranged in the fixing cylinder. The cylindrical cavity is used for inserting the electric pole. By respectively arranging strengthening blocks at the upper end and the lower end of the fixing cylinder, it can be ensured that the electric pole foundation can withstand the tilting moment of the electric pole and is not easily deformed after the electric pole foundation is buried in the underground foundation pit, providing a structural guarantee for workers to work on the pole. Moreover, the remaining space in the annular cavity is used to fill concrete mortar or a filler with a strength not lower than that of the dried concrete mortar, so that it can be ensured that the electric pole foundation can also withstand long-term external loads and has good structural reliability. Thus, it can replace the traditional distribution network pole foundation that adopts the "wet operation" method. In addition, the fixing cylinder structure of the electric pole foundation of the present utility model is compact, occupies less underground space, and can reduce the environmental damage caused by the concrete mortar buried in the ground in the "wet operation" method to the underground soil.

[0019] 2. The electric pole foundation of the present utility model can be prefabricated in advance and directly installed on site, greatly reducing the construction process difficulty, avoiding the problem of uneven construction quality caused by different process levels of different people, and can meet the needs of working on the pole immediately after the electric pole is inserted, saving a large amount of time consumed in waiting for the poured concrete mortar to dry in the "wet operation" method. It significantly shortens the construction period of the distribution network electric pole and can meet the needs of emergency operations with tight periods such as rapid repair and rapid construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic bottom structure diagram of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the sleeve unit of the present utility model;

[0023] Figure 4 is a schematic left sleeve structure diagram of the present utility model;

[0024] Figure 5 is a schematic right sleeve structure diagram of the present utility model;

[0025] Figure 6 is a sectional view of the connection screw of the present utility model;

[0026] Figure 7 is a sectional view of the positioning column of the present utility model.

[0027] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0028] 100, fixed cylinder; 200, stop unit; 210, bottom plate; 220, cross rib; 230, weight reduction hole; 300, sleeve unit; 310, left sleeve; 311, first locking groove; 312, second locking head; 320, right sleeve; 321, second locking groove; 322, first locking head; 400, connecting screw; 410, nut; 420, fastening nail; 500, positioning column; 510, positioning inner hole; 520, positioning baffle; 600, support rod; 610, strengthening block; 620, strengthening rib; 630, pouring port; 640, fixing ring. Detailed implementation manners

[0029] In order to make the content of the present utility model easier to understand, the technical solutions of the present utility model will be further described below in conjunction with the detailed implementation manners and the attached drawings. However, the present utility model is not limited thereto.

[0030] Embodiment 1

[0031] Please refer to Figure 1 and Figure 2 , the present utility model provides a technical solution: a modular pole foundation structure, including a pole and a fixed cylinder 100 sleeved outside the pole. The fixed cylinder 100 includes at least one sleeve unit 300, and adjacent sleeve units 300 are connected to each other. The sleeve unit 300 is an annular sleeve, and the sleeve unit 300 includes a left sleeve 310 and a right sleeve 320 that are spliced with each other. The sleeve unit 300 is divided into an annular cavity and a cylindrical cavity for the pole to insert by the spliced left sleeve 310 and right sleeve 320. Among them, the radial dimension of the cylindrical cavity is larger than the outer diameter of the pole, and a stop unit 200 is provided at the bottom of the fixed cylinder 100.

[0032] As a further preference of this embodiment, both the left sleeve 310 and the right sleeve 320 are hollow inside, and each sleeve unit 300 communicates with each other. The left sleeve 310 and the right sleeve 320 are spliced with each other to form an annular cavity inside the sleeve unit 300.

[0033] As can be seen from the above description, by splitting the fixed cylinder 100 into multiple left sleeves 310 and right sleeves 320, the single-piece weight can be greatly reduced, meeting the needs of manual handling and rapid on-site assembly, avoiding the inconvenience of the entry and transfer of large lifting equipment, and being able to quickly enter the installation site in various environmental conditions. Standardized construction of batch prefabrication and rapid on-site assembly can be realized; and through this splicing structure, it can be directly installed as a pole anti-collision foundation in existing poles, with a wide range of applications.

[0034] As a further preference of this embodiment, at least two support rods 600 are fixedly arranged inside both the left sleeve 310 and the right sleeve 320, and at least two reinforcing blocks 610 are arranged in a circular array at the top of the sleeve unit 300 at the uppermost part of the fixed cylinder 100. Reinforcing blocks 610 are arranged in a circular array at the top of the sleeve unit 300 at the lowermost part of the fixed cylinder 100. Pouring ports 630 are formed between adjacent reinforcing blocks 610. The uniformly distributed pouring ports 630 can uniformly and fully fill the interiors of the left sleeve 310 and the right sleeve 320, avoiding the insufficient pouring caused by the limited fluidity of the concrete mortar.

[0035] As can be seen from the above description, by respectively arranging the reinforcing blocks 610 at the upper end and the lower end of the fixed cylinder 100, it can be ensured that the pole foundation can withstand the side-tilting moment of the pole and is not easily deformed after the pole foundation is buried in the underground foundation pit, providing a structural guarantee for the workers to work on the pole.

[0036] As a further preference of this embodiment, at least two reinforcing ribs 620 are also fixedly arranged inside the left sleeve 310 and the right sleeve 320. The reinforcing ribs 620 are arranged below the support rods 600 to abut against the inner cylinder wall and the outer cylinder wall of the corresponding left sleeve 310 or right sleeve 320, thereby improving the strength and anti-deformation ability of the left sleeve 310 and the right sleeve 320.

[0037] As can be seen from the above description, the pole is inserted into the cylindrical cavity of the fixed cylinder 100, and concrete mortar or a filler with a strength not lower than that after the dryification of the concrete mortar is filled into the left sleeve 310 or the right sleeve 320 through the pouring port 630 at the top of the fixed cylinder 100. In this way, it can be ensured that the pole foundation can also withstand long-term external loads and has good structural reliability, thus replacing the traditional distribution network pole foundation that adopts the "wet operation" method of on-site casting; moreover, the fixed cylinder 100 of the pole foundation of the present utility model has a compact structure and occupies a small underground space, and can reduce the environmental damage caused by the concrete mortar buried underground to the underground soil in the "wet operation" method; it should be noted that the pole foundation of the present utility model can be applied to the new construction and renovation pole projects of the first-class soft soil (tidal flats, paddy fields, sandy lands, farm orchards) in the conventional wind speed area (wind speed ≤ 30 m / s) and the first, second, and third-class soils (tidal flats, paddy fields, sandy lands, farm orchards, ordinary soil, hard soil) in the high wind speed area (wind speed > 30 m / s).

[0038] Embodiment Two

[0039] One end of the side surface of the left sleeve 310 is provided with a first locking groove 311 along the length direction of the fixed cylinder 100, and the other end of the side surface of the left sleeve 310 is fixedly provided with a second locking head 312. A first locking head 322 that is snap-fitted with the first locking groove 311 is fixedly arranged on the side surface of the right sleeve 320. At the same time, a second locking groove 321 that is snap-fitted with the second locking head 312 is also provided on the side surface of the right sleeve 320.

[0040] As a further preference of this embodiment, a connecting screw rod 400 along the length direction of the fixed cylinder 100 is penetrated in both the first lock head 312 and the second lock head 322. The length of the connecting screw rod 400 is equal to the height of the sleeve unit 300. A nut 410 is fixedly connected to the top of the connecting screw rod 400. The nut 410 protrudes from the sleeve unit 300. An internal thread is provided in the nut 410. Preferably, the axial height of the internal thread hole of the nut 410 is more than 20 mm to ensure the stability of the connection. The nut 410 is used to connect the bottom end of the connecting screw rod 400 in the upper layer of the sleeve unit 300.

[0041] As a further preference of this embodiment, positioning columns 500 are respectively arranged at the tops of the left sleeve 310 and the right sleeve 320. Positioning inner holes 510 matching with the positioning columns 500 are respectively penetrated and opened at both ends of the left sleeve 310 and the right sleeve 320. When assembling the left sleeve 310 and the right sleeve 320 on the same layer, by correspondingly inserting the positioning inner holes 510 into the positioning columns 500 of the left sleeve 310 and the right sleeve 320 on the lower layer, the axial alignment of the connecting screw rods 400 in the upper and lower layers can be ensured, which is convenient for the threaded connection between the connecting screw rod 400 in the upper layer and the nut 410 in the lower layer.

[0042] As a further preference of this embodiment, positioning baffles 520 extending along the axial direction of the fixed cylinder 100 are arranged on the arc-shaped outer edges of the left sleeve 310 and the right sleeve 320, which play a role of radial positioning and are convenient for the stacked placement of the left sleeve 310 and the right sleeve 320 in adjacent layers.

[0043] It can be seen from the above description that through the locking connection structure of the first lock head 322 and the first lock groove 311 and the second lock head 312 and the second lock groove 321, the left sleeve 310 and the right sleeve 320 are transversely locked. In addition, under the action of the positioning column 500 and the positioning inner hole 510, through the connection of the connecting screw rods 400 in the upper and lower adjacent layers, the left sleeve 310 and the right sleeve 320 in the upper and lower adjacent layers can be longitudinally locked. Thus, after the assembly of each layer of the sleeve unit 300 is completed, the fixed cylinder 100 can form a structurally stable whole.

[0044] Embodiment Three

[0045] As a further preference of this embodiment, threaded holes are provided in the support rod 600. At least one screw rod is penetrated through the reinforcing block 610. The screw rod is threadedly connected with the corresponding threaded hole. Therefore, the installation of the reinforcing block 610 can be carried out on site without prefabricating the reinforcing block 610 in the sleeve unit 300, which can reduce the single-piece weight and is convenient for manual handling during the installation process. A fixing ring 640 is commonly connected above the reinforcing block 610 at the top of the fixed cylinder 100 to further improve the structural stability of the fixed cylinder 100.

[0046] As a further preference of this embodiment, fastening nails 420 are disposed through the side walls of the first locking groove 311 and the second locking groove 321. The fastening nails 420 on both sides respectively penetrate through the corresponding first locking head 322 or the second locking head 312 and abut against the connecting screw rod 400. By abutting the fastening nails 420 against the connecting screw rod 400, the loosening of the connecting screw rod 400 can be prevented, ensuring the connection stability of the upper and lower sleeve units 300. Among them, the fastening nails 420 are threadedly connected to both the first locking head 322 and the first locking groove 311, and the second locking head 312 and the second locking groove 321. Preferably, the axial direction of the fastening nails 420 is perpendicular to the axial direction of the connecting screw rod 400.

[0047] As a further preference of this embodiment, the stop unit 200 includes a bottom plate 210. A cross rib 220 is fixedly disposed at the bottom of the bottom plate 210. At least two weight reduction holes 230 are formed in the bottom plate 210 in a circumferential array. By using the bottom plate 210 to support the electric pole, the settlement of the electric pole can be prevented. To reduce the weight of the stop unit 200, weight reduction holes 230 are provided in the circumferential direction of the bottom plate 210. At the same time, the weight reduction holes 230 do not extend directly below the electric pole to ensure the effective support of the bottom plate 210 for the electric pole.

[0048] As a further preference of this embodiment, nuts 410 and positioning columns 500 are also provided on the top of the bottom plate 210. The positioning columns 500 correspond to the positioning inner holes 510 at the bottom of the fixed cylinder 100, and the nuts 410 correspond to the connecting screw rods 400 at the bottom of the fixed cylinder 100. During installation, first place the stop unit 200 horizontally. After aligning the positioning inner holes 510 at the bottoms of the left sleeve 310 and the right sleeve 320 of the bottom layer sleeve unit 300 with the positioning columns 500 of the stop unit 200 axially and then vertically lowering them, insert the positioning columns 500 of the stop unit 200 axially into the positioning inner holes 510 at the bottoms of the left sleeve 310 and the right sleeve 320, and threadedly connect the bottom ends of the connecting screw rods 400 of the left sleeve 310 and the right sleeve 320 with the nuts 410 on the stop unit 200, then the stop unit 200 can be longitudinally and tightly connected to the bottom layer sleeve unit 300.

[0049] As a further preference of this embodiment, the reinforcing block 610 is preferably a lightweight and high-strength rigid plastic, and the main structures such as the left sleeve 310, the right sleeve 320, the reinforcing rib 620, and the support rod 600 of the fixed cylinder 100 are all made of aluminum alloy, which can meet the installation requirements of simple manual handling operations.

[0050] The working principle of the present utility model:

[0051] When the pole foundation is used as an underground pole foundation, during application construction, it is necessary to first dig a foundation pit. After leveling the bottom of the pit before installing the fixing cylinder 100, install the fixing cylinder 100 into the foundation pit, then backfill the space between the outer wall of the fixing cylinder 100 and the side wall of the foundation pit. Next, insert the pole into the cylindrical cavity and backfill the remaining space in the cylindrical cavity with soil. Finally, after the construction workers complete the work on the pole, pour the filling material into the sleeve unit 300 through the pouring port 630. By using the above-mentioned pole foundation, not only can it be prefabricated and assembled in advance, but also the pouring construction can be postponed. It can quickly start the work on the pole, with a short construction period, which can meet the needs of daily new construction, renovation, and rapid construction tasks. Moreover, the installation and construction process are simple and easy to operate, and the stability of the construction quality can be guaranteed.

[0052] The pole foundation of the straight pole in the 10kV overhead line project needs to be reinforced to meet the design requirements of high wind speed. The construction period of the distribution network pole foundation in the traditional on-site casting method usually takes 7 days, and it takes nearly another 7 days to wait for the concrete strength of the foundation to approach 100%. As a result, a total of 14 days need to be waited for the line erection construction. However, through experiments, the method of the present invention takes 3 hours from excavating the foundation pit to completing the backfilling of the cylindrical cavity and tamping the embedded foundation, and the construction period can be reduced to 3 hours, which has a significant advantage in the construction period.

[0053] When it is used as an above-ground anti-collision foundation for the pole, after inserting the pole into the cylindrical cavity, first backfill the remaining space in the cylindrical cavity, and then pour the filling material into the annular cavity, and the construction is simple.

[0054] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. A modular electric pole infrastructure structure, comprising an electric pole and a fixing cylinder (100) sleeved on the outside of the electric pole, wherein the fixing cylinder (100) comprises at least one sleeve unit (300), and adjacent sleeve units (300) are connected to each other, characterized in that: The sleeve unit (300) comprises a left sleeve (310) and a right sleeve (320) spliced ​​together, and the sleeve unit (300) is divided into an annular cavity and a cylindrical cavity into which a power supply rod is inserted by the left sleeve (310) and the right sleeve (320) spliced ​​together, and a stop unit (200) is provided at the bottom of the fixed cylinder (100).

2. A modular pole infrastructure according to claim 1, characterized in that: A first locking groove (311) along the length direction of the fixed tube (100) is provided at one end of the side surface of the left sleeve (310), a second locking head (312) is fixedly provided at the other end of the side surface of the left sleeve (310), a first locking head (322) engaged with the first locking groove (311) is fixedly provided on the side surface of the right sleeve (320), and a second locking groove (321) engaged with the second locking head (312) is also provided on the side surface of the right sleeve (320).

3. A modular pole infrastructure according to claim 2, characterized in that: A connecting screw (400) is provided through each of the first locking head (322) and the second locking head (312) along the length direction of the fixed cylinder (100); the length of the connecting screw (400) is equal to the height of the sleeve unit (300); a nut (410) is fixedly connected to the top of the connecting screw (400); the nut (410) protrudes from the sleeve unit (300).

4. A modular pole infrastructure according to claim 1, characterized in that: Positioning columns (500) are respectively arranged at the top of the left sleeve (310) and the right sleeve (320), and positioning inner holes (510) matching with the positioning columns (500) are respectively opened at both ends of the left sleeve (310) and the right sleeve (320).

5. A modular pole infrastructure according to claim 1, characterized in that: The left sleeve (310) and the right sleeve (320) are both hollow inside, and the sleeve units (300) are interconnected.

6. A modular pole infrastructure according to claim 1, characterized in that: At least two support rods (600) are fixedly arranged inside the left sleeve (310) and the right sleeve (320), and at least two reinforcing blocks (610) are arranged in a top annular array of the sleeve unit (300) located at the top of the fixed cylinder (100), and reinforcing blocks (610) are arranged in a top annular array of the sleeve unit (300) located at the bottom of the fixed cylinder (100), and injection ports (630) are formed between adjacent reinforcing blocks (610).

7. A modular pole infrastructure according to claim 6, characterized in that: The support rod (600) is provided with a threaded hole, and the reinforcing blocks (610) are each provided with at least one screw rod, the screw rod being threadedly connected to the corresponding threaded hole, and a fixing ring (640) is connected to the reinforcing blocks (610) located at the top of the fixing tube (100).

8. A modular pole infrastructure according to claim 6, characterized in that: At least two reinforcing ribs (620) are also fixedly arranged inside the left sleeve (310) and the right sleeve (320), and the reinforcing ribs (620) are arranged below the support rod (600).

9. A modular pole infrastructure according to claim 3, characterized in that: The side walls of the first locking groove (311) and the second locking groove (321) are both penetrated by fastening nails (420), and the fastening nails (420) on both sides are respectively penetrated by the corresponding first locking heads (322) or second locking heads (312) and abut against the connecting screw (400).

10. A modular pole infrastructure according to claim 1, characterized in that: The stop unit (200) comprises a bottom plate (210), a cross rib material (220) is fixedly arranged at the bottom of the bottom plate (210), and at least two weight-reducing holes (230) are provided in a circular array on the bottom plate (210).

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