A wind-resistant steel pipe pole for overhead power transmission lines with high-strength anchor bolt connection

Abstract

This utility model discloses a wind-resistant steel pipe pole for overhead power transmission lines with high-strength anchor bolt connection. The pole includes a pole body with several symmetrically arranged crossarm structures and a ladder with an anti-climbing device at the bottom. The pole body comprises a top section, a middle section, and a bottom section. Compared with existing technologies, this utility model offers the following advantages: simple structure and ease of use; high wind resistance, with a variable cross-section pole design significantly improving bending stiffness; octagonal crossarm main poles reduce wind resistance, and anchor bolt connections prevent loosening; stable connection and high load-bearing capacity, with anchor bolt connections between the crossarm supports and crossarm connecting seats ensuring the stability of the conductor connection points; integrated safety design, with the anti-climbing device (anti-climb spikes tilted at 15°) integrated with the grounding component and pole number plate, reducing maintenance costs; the base achieves high-strength fixation through L-shaped anchor bolts, adapting to complex geological conditions; modular installation, with segmented pole body connections and prefabricated ladders and crossarms, improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of power transmission line support structure, specifically a wind-resistant steel pipe pole for overhead power transmission lines with high-strength anchor bolt connection, suitable for power transmission line projects in high-load and strong-wind areas. Background Technology

[0002] Traditional overhead transmission line steel pipe poles have the following problems under extreme wind loads and high mechanical loads:

[0003] 1. Insufficient structural strength: Traditional steel pipe poles are mostly designed with a uniform cross section, which has limited bending and torsional resistance and is prone to deformation or even breakage under strong winds.

[0004] 2. Poor connection stability: The crossarm and pole are connected by ordinary bolts, which are prone to loosening due to long-term wind vibration, causing the phase sequence plate and conductor connection point to shift.

[0005] 3. High maintenance costs: The lack of effective anti-climbing measures makes illegal climbing prone to safety accidents, and the grounding components and warning signs are scattered, resulting in low maintenance efficiency.

[0006] 4. Poor adaptability: The base has a single fixing method, which cannot adapt to complex geological conditions and is prone to overall overturning due to insufficient anchor bolt strength.

[0007] To address the aforementioned issues, there is an urgent need for a power transmission steel pipe pole that features high structural strength, reliable connections, excellent wind resistance, and ease of maintenance. Utility Model Content

[0008] To address the problems mentioned in the background art, this utility model provides a wind-resistant steel pipe pole for overhead power transmission lines with high-strength anchor bolt connection. Through a variable cross-section pole body, high-strength anchor bolt connection, integrated anti-climbing device, and optimized base design, it solves the problem of traditional steel pipe poles being prone to failure in high-load, strong-wind areas.

[0009] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a wind-resistant steel pipe pole for overhead power transmission lines with high-strength anchor bolt connection, including a pole body, several crossarm structures symmetrically arranged on the pole body, a ladder on the pole body, and an anti-climbing device at the bottom of the ladder;

[0010] The rod body includes a top section, a middle section, and a bottom section connected sequentially from top to bottom. The top section, middle section, and bottom section are circular tubes with varying cross-sections from top to bottom. The bottom of the top section is fitted onto the top of the middle section, and the bottom of the middle section is fitted onto the top of the bottom section. The bottom of the top section, the top and bottom of the middle section, and the top of the bottom section are all provided with tightening plates. The bottom of the bottom section is provided with a base.

[0011] The ladder includes a ladder vertical tube, and several ladder horizontal bars are provided on both sides of the ladder vertical tube. Several ladder seats are provided longitudinally on the sides of the top bar segment, middle bar segment, and bottom bar segment. The ladder vertical tube is inserted into the ladder seats.

[0012] The crossarm structure includes a crossarm main rod, a crossarm connecting seat at the end of the crossarm main rod, a crossarm support on the rod body, the crossarm connecting seat and the crossarm support are connected by anchor bolts, a phase plate seat is provided on the crossarm support, the phase plate seat is located between two symmetrical crossarm structures, and a phase sequence plate is provided on the phase plate seat by bolts.

[0013] The main crossarm is a variable cross-section octagonal tube. The main crossarm is welded to the crossarm connecting seat and reinforced by several crossarm reinforcing plates. Several handrails are provided at the top of the main crossarm. A crossarm top plate is provided at the end of the main crossarm away from the crossarm connecting seat. A first crossarm hanging plate is horizontally provided on the inner side of the crossarm top plate. A second crossarm hanging plate is vertically provided at the bottom of the first crossarm hanging plate. Hanging holes are provided on both the first and second crossarm hanging plates.

[0014] The base includes a circular flange plate, the flange plate being larger than the bottom of the bottom rod segment. The flange plate is provided with several L-shaped anchor bolts, the L-shaped anchor bolts being located on the outside of the bottom rod segment. The flange plate is fixed to the ground by the several L-shaped anchor bolts. Several base reinforcing plates are provided on the flange plate and the side of the bottom rod segment.

[0015] As a preferred embodiment, the top side of the top pole segment is provided with a capping plate, and a U-shaped plate is provided below the capping plate;

[0016] The bottom pole section is equipped with a grounding device at its bottom, which is located above the base. A warning sign is provided on the bottom pole section, and a pole number plate is provided on the top of the warning sign.

[0017] The bottom pole section is also equipped with an anti-climbing plate, which is located above the pole number plate.

[0018] As a preferred embodiment, the anti-climbing device includes an arc-shaped steel plate clamped to the outside of the pole body. The arc-shaped steel plate is fixed to the anti-climbing plate by bolts. A plurality of anti-climbing spikes are evenly distributed on the outside of the arc-shaped steel plate, and the anti-climbing spikes are inclined downward.

[0019] Furthermore, the anti-climb spike is made of round steel, the end of the anti-climb spike is conical, and the anti-climb spike is tilted downward at 15°.

[0020] As a preferred embodiment, the diameter of the main crossarm rod decreases sequentially from the crossarm connecting seat to the crossarm hanging plate.

[0021] Furthermore, the number of main crossarms is three pairs, and the vertical distance between adjacent main crossarms is 3300mm.

[0022] As a preferred embodiment, the number of L-shaped anchors is 20, and the type is M39.

[0023] As a preferred embodiment, the rod body is manufactured using a hot-dip galvanizing process.

[0024] Compared with existing technologies, the advantages of this utility model are: simple structure and easy to use; high wind resistance, with the variable cross-section pole design significantly improving bending stiffness; octagonal crossarm main pole reduces wind resistance, and anchor bolt connection prevents loosening; stable connection and high load-bearing capacity, with anchor bolt connection between the crossarm support and crossarm connecting seat to ensure the stability of the conductor connection point; integrated safety design, with anti-climb device (anti-climb spike tilted at 15°) integrated with grounding parts and pole number plate, reducing maintenance costs; the base achieves high-strength fixation through L-shaped anchor bolts, adapting to complex geological conditions; modular installation, with segmented pole connection, and prefabricated ladders and crossarms, improving construction efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a structural schematic diagram of the top rod segment of this utility model.

[0027] Figure 3 This is a structural schematic diagram of the middle section of this utility model.

[0028] Figure 4 This is a structural schematic diagram of the bottom rod segment of this utility model.

[0029] Figure 5 This is a utility model Figure 4 A magnified view of part A in the image.

[0030] Figure 6 This is a side view of the crossbeam structure of this utility model.

[0031] Figure 7 This is a top view of the crossbeam structure of this utility model.

[0032] Figure 8 This is a partial enlarged view of the ladder of this utility model.

[0033] Figure 9 This is a top view of the flange plate of this utility model.

[0034] Figure 10 This is a structural schematic diagram of the flange plate and L-shaped anchor bolt of this utility model.

[0035] Figure 11This is a top view of the anti-climbing device of this utility model.

[0036] Figure 12 This is a schematic diagram of the structure of the arc-shaped steel plate and anti-climb spikes in the anti-climb device of this utility model.

[0037] As shown in the figure: 1. Pole body, 2. Crossarm structure, 3. Ladder, 4. Anti-climb device, 5. Tightening plate, 6. Base, 7. Crossarm support, 101. Top pole section, 102. Middle pole section, 103. Bottom pole section, 201. Crossarm main pole, 202. Crossarm connecting seat, 203. Crossarm reinforcing plate, 204. Handrail, 205. Crossarm top plate, 206. First crossarm hanging plate, 207. Second crossarm hanging plate, 301. Ladder vertical pipe, 302. Ladder horizontal bar, 303. Ladder seat, 401. Curved steel plate, 402. Anti-climb spikes, 601. Flange plate, 602. L-shaped anchor bolt, 603. Base reinforcing plate, 1011. Top plate, 1012. U-shaped plate, 1031. Anti-climb plate. Detailed Implementation

[0038] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "back," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Referring to the attached drawings, a wind-resistant steel pipe pole for overhead power transmission lines with high-strength anchor bolt connection includes a pole body 1, several crossarm structures 2 symmetrically arranged on the pole body 1, a ladder 3 on the pole body 1, and an anti-climbing device 4 at the bottom of the ladder 3.

[0042] The rod body 1 includes a top rod segment 101, a middle rod segment 102, and a bottom rod segment 103 connected sequentially from top to bottom. The top rod segment 101, the middle rod segment 102, and the bottom rod segment 103 are circular tubes with varying cross-sections from top to bottom. The bottom of the top rod segment 101 is fitted onto the top of the middle rod segment 102, and the bottom of the middle rod segment 102 is fitted onto the top of the bottom rod segment 103. The bottom of the top rod segment 101, the top and bottom of the middle rod segment 102, and the top of the bottom rod segment 103 are all provided with tightening plates 5, and the bottom of the bottom rod segment 103 is provided with a base 6.

[0043] The ladder 3 includes a ladder vertical tube 301, and several ladder horizontal bars 302 are provided on both sides of the ladder vertical tube 301. Several ladder seats 303 are provided longitudinally on the sides of the top bar segment 101, the middle bar segment 102, and the bottom bar segment 103. The ladder vertical tube 301 is inserted into the ladder seat 303.

[0044] The crossarm structure 2 includes a crossarm main rod 201, a crossarm connecting seat 202 at the end of the crossarm main rod 201, a crossarm support 7 on the rod body 1, the crossarm connecting seat 202 and the crossarm support 7 are connected by anchor bolts, a phase plate seat is provided on the crossarm support 7, the phase plate seat is located between two symmetrical crossarm structures 2, and a phase sequence plate is provided on the phase plate seat by bolts.

[0045] The main crossarm 201 is an octagonal tube with a variable cross section. The main crossarm 201 is welded to the crossarm connecting seat 202 and reinforced by several crossarm reinforcing plates 203. Several handrails 204 are provided at the top of the main crossarm 201. A crossarm top plate 205 is provided at the end of the main crossarm 201 away from the crossarm connecting seat 202. A first crossarm hanging plate 206 is horizontally provided on the inner side of the crossarm top plate 205. A second crossarm hanging plate 207 is vertically provided at the bottom of the first crossarm hanging plate 206. Both the first crossarm hanging plate 206 and the second crossarm hanging plate 207 are provided with hanging holes.

[0046] The base 6 includes a circular flange plate 601, which is larger than the bottom of the bottom rod segment 103. The flange plate 601 is provided with several L-shaped anchor bolts 602, which are located on the outside of the bottom rod segment 103. The flange plate 601 is fixed to the ground by several L-shaped anchor bolts 602. Several base reinforcing plates 603 are provided on the sides of the flange plate 601 and the bottom rod segment 103.

[0047] The top side of the top pole segment 101 is provided with a capping plate 1011, and a U-shaped plate 1012 is provided below the capping plate 1011.

[0048] The bottom pole segment 103 is equipped with a grounding device, which is located above the base 6. A warning sign is provided on the bottom pole segment 103, and the pole number plate is provided on the top of the warning sign.

[0049] The bottom pole section 103 is also equipped with an anti-climbing plate 1031, which is located above the pole number plate.

[0050] The anti-climb device 4 includes an arc-shaped steel plate 401 that is clamped to the outside of the pole body 1. The arc-shaped steel plate 401 is fixed to the anti-climb plate 1031 by bolts. A number of anti-climb spikes 402 are evenly provided on the outside of the arc-shaped steel plate 401. The anti-climb spikes 402 are inclined downward.

[0051] The anti-climb spike 402 is made of round steel, with a pointed cone-shaped end and tilted downwards at 15°.

[0052] The diameter of the main crossarm 201 decreases sequentially from the crossarm connecting seat 202 to the crossarm hanging plate.

[0053] There are three pairs of crossarm main rods 201, and the vertical distance between adjacent crossarm main rods 201 is 3300mm.

[0054] There are 20 L-shaped anchor bolts of type 602, model M39.

[0055] In a specific implementation, the structural features and connection method of this utility model are as follows:

[0056] Rod structure:

[0057] 1. Top pole section: The top is equipped with a hanging plate and a U-shaped capping plate, and the bottom is fitted with the middle pole section and locked by a tightening plate.

[0058] Middle section: Both the top and bottom ends are equipped with tightening plates to connect the top and bottom sections. The cross-sectional diameter increases from top to bottom, and the bottom section diameter is 30% larger than the top section diameter.

[0059] Bottom pole section: The bottom is welded with a flange plate, and the side is equipped with a warning sign, pole number plate and anti-climb plate. The grounding component is located above the base.

[0060] 2. Crossarm structure:

[0061] Crossarm main pole: octagonal tube with variable cross-section, the diameter decreases from the connecting seat to the hanging plate, a handrail is provided at the top, and the end is welded with a crossarm capping plate.

[0062] Hanging plate: The first crossarm hanging plate is set horizontally, and the second hanging plate is set vertically downward. The spacing of the hanging holes is optimized according to the conductor tension distribution (after testing, there is no deformation when the load at the hanging point reaches 22.197kN).

[0063] 3. Ladders and anti-climbing devices:

[0064] Ladder: The ladder vertical tube is inserted into the ladder seat on the side of the pole, and the horizontal bar spacing is 330mm, which conforms to ergonomics.

[0065] Anti-climb device: The arc-shaped steel plate is fixed to the anti-climbing plate with bolts, and the outside is welded with pointed conical anti-climb spikes (made of round steel, tilted at 15°).

[0066] 4. Base:

[0067] Flange plate: The diameter is 20% larger than the bottom rod section, and it is fixed to the foundation by 20 M39 L-shaped anchor bolts (experimental calibration force value error ≤0.2%).

[0068] Base reinforcement plate: welded to the flange plate and the side of the rod, distributed radially, to improve the anti-overturning moment.

[0069] Operating method

[0070] 1. Installation process:

[0071] The pole body is hoisted in sections, and the connecting parts are locked by tightening plates; the crossarm structure is fixed to the crossarm support by anchor bolts, and the wire is installed by hanging plate; the ladder is inserted into the ladder seat, and the anti-climbing device bolts are tightened; after the base anchor bolts are pre-embedded, concrete is poured, and the verticality is calibrated (experimental verticality deviation ≤0.02%).

[0072] 2. Working principle:

[0073] The variable cross-section pole gradually distributes the wind load to the bottom, and the L-shaped anchors provide pull-out resistance (the anchors did not slip when the vertical load was 6.832kN in the experiment); the double-layer hanging plate of the crossarm balances the tension of the conductor and avoids stress concentration; the anti-climb spikes prevent climbing through mechanical interference, and the arc-shaped steel plate prevents tools from prying it.

[0074] Example

[0075] Pole height: 25.8m (top section), 21.5m (middle section), 18.2m (bottom section);

[0076] Number of crossarms: three pairs, with a vertical spacing of 3300mm;

[0077] Test results: Under maximum wind load (wind direction angle of 90°), with all conductors fixed, the lateral displacement was 1207 mm and the longitudinal displacement was 33 mm under 100% load. The deformation met the IEC 60652:2021 standard, and the structure showed no plastic deformation.

[0078] This utility model significantly improves the reliability of steel pipe poles under high load and strong wind environments through optimized structural design, high-strength connection and integrated safety devices, and is suitable for power grid upgrades and transmission line construction in extreme climate areas.

[0079] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wind-resistant steel pipe pole for overhead power transmission lines with high-strength anchor bolt connection, characterized in that: Includes a pole, on which several crossbeam structures are symmetrically arranged, and a ladder is provided on the pole, with an anti-climbing device at the bottom of the ladder; The rod body includes a top section, a middle section, and a bottom section connected sequentially from top to bottom. The top section, middle section, and bottom section are circular tubes with varying cross-sections from top to bottom. The bottom of the top section is fitted onto the top of the middle section, and the bottom of the middle section is fitted onto the top of the bottom section. The bottom of the top section, the top and bottom of the middle section, and the top of the bottom section are all provided with tightening plates. The bottom of the bottom section is provided with a base. The ladder includes a ladder vertical tube, and several ladder horizontal bars are provided on both sides of the ladder vertical tube. Several ladder seats are provided longitudinally on the sides of the top bar segment, middle bar segment, and bottom bar segment. The ladder vertical tube is inserted into the ladder seats. The crossarm structure includes a crossarm main rod, a crossarm connecting seat at the end of the crossarm main rod, a crossarm support on the rod body, the crossarm connecting seat and the crossarm support are connected by anchor bolts, a phase plate seat is provided on the crossarm support, the phase plate seat is located between two symmetrical crossarm structures, and a phase sequence plate is provided on the phase plate seat by bolts. The main crossarm is a variable cross-section octagonal tube. The main crossarm is welded to the crossarm connecting seat and reinforced by several crossarm reinforcing plates. Several handrails are provided at the top of the main crossarm. A crossarm top plate is provided at the end of the main crossarm away from the crossarm connecting seat. A first crossarm hanging plate is horizontally provided on the inner side of the crossarm top plate. A second crossarm hanging plate is vertically provided at the bottom of the first crossarm hanging plate. Hanging holes are provided on both the first and second crossarm hanging plates. The base includes a circular flange plate, the flange plate being larger than the bottom of the bottom rod segment. The flange plate is provided with several L-shaped anchor bolts, the L-shaped anchor bolts being located on the outside of the bottom rod segment. The flange plate is fixed to the ground by the several L-shaped anchor bolts. Several base reinforcing plates are provided on the flange plate and the side of the bottom rod segment.

2. The high-strength anchor bolt connected wind-resistant steel pipe pole for overhead power transmission lines according to claim 1, characterized in that: The top side of the top pole segment is provided with a capping plate, and a U-shaped plate is provided below the capping plate; The bottom pole section is equipped with a grounding device at its bottom, which is located above the base. A warning sign is provided on the bottom pole section, and a pole number plate is provided on the top of the warning sign. The bottom pole section is also equipped with an anti-climbing plate, which is located above the pole number plate.

3. The high-strength anchor bolt connected wind-resistant steel pipe pole for overhead power transmission lines according to claim 2, characterized in that: The anti-climb device includes an arc-shaped steel plate that is clamped to the outside of the pole. The arc-shaped steel plate is fixed to the anti-climbing plate by bolts. A number of anti-climb spikes are evenly distributed on the outside of the arc-shaped steel plate, and the anti-climb spikes are inclined downward.

4. The high-strength anchor bolt connected wind-resistant steel pipe pole for overhead power transmission lines according to claim 3, characterized in that: The anti-climb spike is made of round steel, the end of the anti-climb spike is pointed and conical, and the anti-climb spike is inclined downward at 15°.

5. The high-strength anchor bolt connected wind-resistant steel pipe pole for overhead power transmission lines according to claim 1, characterized in that: The diameter of the main crossarm rod decreases sequentially from the crossarm connecting seat to the crossarm hanging plate.

6. The high-strength anchor bolt connected wind-resistant steel pipe pole for overhead power transmission lines according to claim 5, characterized in that: The number of crossarm main rods is three pairs, and the vertical distance between adjacent crossarm main rods is 3300mm.

7. The high-strength anchor bolt connected wind-resistant steel pipe pole for overhead power transmission lines according to claim 1, characterized in that: The number of L-shaped anchors is 20, and the model is M39.

8. The high-strength anchor bolt connected wind-resistant steel pipe pole for overhead power transmission lines according to claim 1, characterized in that: The rod body is manufactured using a hot-dip galvanizing process.

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