A metal buckle with self-adaptive clamping function for electric pole main reinforcement protective layer and a preparation and application method thereof

Abstract

This invention discloses a metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function, and its preparation and application methods. It relates to the field of utility pole manufacturing technology. The clip includes a C-shaped modified high-density polyethylene clip body with an arc-shaped engagement groove inside. Metal springs are provided at both ends of the engagement groove and at the front and rear sides, all integrally embedded with the clip body. Adaptive clamping of the main reinforcement and circumferential reinforcement of the pole is achieved through elastic deformation. An adjusting component is fixed on the clip body, consisting of an adjusting sleeve and an adjusting rod. The two components achieve unidirectional elongation and self-locking through right-angled trapezoidal teeth engagement, and double self-locking is achieved in conjunction with an elastic lock. Stainless steel wear-resistant plates are embedded in the teeth, and the adjusting rod has thickness scale lines. This invention solves the problems of cumbersome installation, easy deformation, and low thickness control accuracy of existing positioning components, achieving convenient clip installation, precise distance adjustment, and structural stability, thus improving the quality and efficiency of utility pole construction and making it suitable for large-scale production and widespread application.

Description

Technical Field

[0001] This invention relates to the field of pole manufacturing technology, specifically to a metal clip with adaptive clamping function for the protective layer of the main reinforcement of a pole, and its preparation and application method. Background Technology

[0002] During the manufacturing process of utility poles, the main structure is formed by pouring concrete and shaping a reinforced steel frame. During the erection of this frame, positioning devices are needed to control the thickness of the protective layer of the main reinforcement bars. Currently, commonly used positioning devices include concrete spacers and plastic clips. Concrete spacers come in two types: those tied with wire and those welded to the rebar ends. In practice, these are labor-intensive and time-consuming, requiring rebar tying or welding, and are difficult to install in areas with dense rebar. While plastic clips are easy to install, their material has poor compressive strength, is easily deformed under pressure, lacks durability, and cannot precisely adjust the protective layer thickness. Both types of positioning devices pose quality risks to the construction quality of the reinforced steel protective layer, leading to excessive deviations in thickness, affecting the overall structural strength of the pole, and also increasing operational difficulty and reducing the efficiency of pole production and construction.

[0003] To address the aforementioned issues, this invention presents a metal clip for the protective layer of the main reinforcement of utility poles, featuring adaptive clamping functionality. It also includes corresponding manufacturing and application methods. This clip combines the advantages of easy installation with plastic materials and the structural stability of metal materials. It enables adaptive clamping of the main reinforcement and circumferential reinforcement of the pole, and allows for precise adjustment of the protective layer thickness. The manufacturing method achieves integrated molding of the metal component and the plastic body, resulting in a strong connection. The application method requires no specialized tools and is easy to operate, effectively overcoming the shortcomings of existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function, as well as its preparation and application method, to solve the problems of cumbersome installation, easy deformation, and low accuracy of protective layer thickness control of existing positioning components for the main reinforcement of utility poles. This invention achieves adaptive clamping, precise distance adjustment, and convenient installation of the clip, while ensuring standardized preparation process and efficient application process, thereby improving the quality and efficiency of utility pole production and construction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function, comprising a clip body made of modified high-density polyethylene, with a C-shaped structure design and an arc-shaped engagement groove inside, the two ends of which are open; adjusting components are fixedly connected to the upper end and sides of the clip body to adjust the distance between the main reinforcement of the utility pole and the inner wall of the casting mold, thereby controlling the thickness of the concrete pouring on the outer side of the utility pole. A C-shaped metal spring piece is provided at the openings at both ends of the engagement groove, with arc-shaped structures on both sides, one end of which is embedded and integrally connected to the clip body, cooperating with the engagement groove to engage and fix the circumferential reinforcement of the utility pole; a C-shaped metal spring piece is provided at the front and rear edges of the engagement groove, with arc-shaped structures at both ends, also embedded and integrally connected to the clip body, cooperating with the clip body to engage and fix the main reinforcement of the utility pole. By utilizing the elastic deformation of the buckle body, combined with the elastic deformation of metal spring one and metal spring two, adaptive clamping and fixing of the main reinforcement and circumferential reinforcement of the pole can be achieved without additional binding or welding.

[0006] The adjusting component includes a cylindrical adjusting sleeve and an adjusting rod. One end of the adjusting rod is movably inserted into the adjusting sleeve, and the end of the adjusting sleeve away from the adjusting rod is heat-fused to the snap-fit ​​body. Reinforcing ribs are provided at the connection point to enhance connection strength. A movable groove is formed on the inner wall of the adjusting sleeve, and a corresponding movable groove is formed on the outer surface of the adjusting rod. A tooth is fixed at equal intervals in movable groove one, and a tooth is fixed at equal intervals in movable groove two. Both teeth have right-angled trapezoidal cross-sections, with their inclined surfaces fitting together. Stainless steel wear-resistant plates are embedded on the surfaces of teeth one and two to achieve unidirectional extension and self-locking of the adjusting rod, preventing retraction during use.

[0007] Both metal spring clips 1 and 2 are made of 65Mn spring steel, with a surface treatment for corrosion resistance and wear resistance to improve elastic recovery and corrosion resistance. The surface of the clip body in contact with the concrete has annular anti-displacement ribs to increase the bonding force with the concrete and prevent slippage during pouring. The outer surface of the adjusting rod has protective layer thickness markings for visual adjustment. An elastic locking mechanism is added to the connection between the adjusting sleeve and the adjusting rod, achieving double self-locking and further ensuring structural stability after adjustment.

[0008] This invention also discloses a method for preparing the above-mentioned metal buckle, comprising the following steps:

[0009] S1. Raw material preparation and pretreatment: Modified high-density polyethylene granules are prepared as the main raw material for the buckle. They are made by mixing high-density polyethylene base material with 3% UV stabilizer, 2% toughening agent and 1% antioxidant by mass ratio and granulating. The mixture is then dried to a moisture content of ≤0.05%. 65Mn spring steel billets with a thickness of 0.8-1.2mm and tempered at 300℃ are prepared as the raw material for the metal spring sheet, with an elastic recovery rate of ≥95%. POM granules dried to a moisture content of ≤0.02% and polished stainless steel wear-resistant sheets are prepared as raw materials for the adjustment parts.

[0010] S2. Molding of the buckle body and installation of metal springs: Using insert injection molding process, metal spring one and metal spring two are precisely positioned in the injection mold. The injection parameters are temperature 180-200℃, injection pressure 80-100MPa, mold temperature 40-50℃. Modified high-density polyethylene molten material is injected and cooled to form the metal springs and buckle body in an integrated manner. The engagement groove is finely ground to make the groove wall smoothness Ra≤0.8μm, thus obtaining the buckle body blank.

[0011] S3. Precision molding of adjusting parts and machining of meshing structure: Injection molding of adjusting sleeve and adjusting rod, with injection parameters of temperature 170-190℃ and injection pressure 70-90MPa; Stainless steel wear-resistant plates are fixed in movable groove one and movable groove two through ultrasonic embedding process to form tooth one and tooth two, and are CNC precision ground to ensure that the tooth meshing gap is ≤0.03mm; The adjusting rod is inserted into the adjusting sleeve to complete the pre-assembly of the adjusting parts.

[0012] S4. Assembly and Overall Performance Testing: The adjusting parts are fixed to the designated positions of the buckle body blank using a 120-130℃ hot-melt connection process, with reinforcing ribs at the connection points; the finished buckles are subjected to performance testing, with the testing standards being: no permanent deformation after the metal spring clips clamp the steel bars repeatedly for 500 cycles, no jamming during the adjustment stroke of the adjusting parts, no deformation when the buckle body withstands 500N of pressure, and tensile strength of each connection point ≥200N. The finished buckles are obtained after passing the test.

[0013] S5. Finished Product Packaging and Storage: Finished buckles are individually packaged in anti-static plastic boxes and stored in an environment with a temperature of 25±5℃ and humidity of ≤60% to prevent buckle aging and metal spring rust.

[0014] This invention also discloses a method for applying the aforementioned metal buckle, comprising the following steps:

[0015] T1. Pre-construction preparation and clip selection: Select matching clips based on the specifications of the main reinforcement and circumferential reinforcement of the pole, and confirm that the metal springs are not deformed and the adjustment parts are smooth; clean the rust, oil, and concrete residue from the connection nodes of the main reinforcement and circumferential reinforcement of the pole to ensure that the reinforcement surface is clean.

[0016] T2. Precise positioning of rebar nodes and adaptive clamping of clips: Mark the installation positions of clips at design intervals of 500-800mm on the main bars of the pole's rebar cage. The marked points correspond to the intersection connection nodes of the main bars and the circumferential bars. Hold the clip body and insert the circumferential bars into metal spring clip one and the main bars into metal spring clip two. Adaptive clamping is achieved through the elastic deformation of the clip body and the metal spring clips, without the need for additional fixing. If the clip position is offset, tap it lightly with a rubber hammer to make minor adjustments to ensure that the clip is perpendicular to the rebar node.

[0017] T3. Precise adjustment of protective layer thickness: Based on the designed concrete protective layer thickness of the pole, pull the adjusting rod outward, and use the engagement of teeth one and two to achieve unidirectional extension of the adjusting rod; determine the protective layer thickness by measuring the scale lines on the adjusting rod or by measuring tape, and the elastic lock automatically engages to achieve double self-locking; if it is necessary to shorten the length of the adjusting part, press the elastic lock to unlock, push the adjusting rod back to the designated position and release it, and the teeth will re-engage and lock, so that the deviation of the protective layer thickness is controlled within ±2mm.

[0018] T4. Installation of casting mold and protection during casting: The casting mold for the power pole is placed on the outside of the steel reinforcement cage, so that the inner wall of the mold and the outer end of the adjusting part are tightly fitted. The buckle is used to support and position the mold through the adjusting part. When pouring concrete, avoid direct impact of the vibrator on the buckle to prevent deformation or displacement of the buckle. After the concrete has initially set, the buckle is permanently bonded to the concrete and does not need to be removed, thus avoiding damage to the concrete surface.

[0019] T5. Post-construction maintenance and finished product inspection: In accordance with the maintenance requirements for concrete poles, carry out moisturizing and heat preservation maintenance, and ensure that the clips do not age or deform during the maintenance process; After the pole is formed, inspect the thickness of the protective layer of the main reinforcement to ensure that it meets the design requirements; For poles that require secondary processing, no special treatment is required for the clip parts, and it will not affect the cutting and splicing of the pole.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The metal clip of this invention adopts a modified high-density polyethylene clip body combined with a 65Mn spring steel spring sheet structure design. Through the elastic deformation of the two, it achieves adaptive clamping of the main reinforcement and circumferential reinforcement of the pole, without the need for additional binding or welding, making installation convenient and solving the problems of cumbersome installation of existing concrete pad blocks and easy deformation of plastic clips. The metal spring sheet is integrated with the clip body, with a firm connection, preventing the spring sheet from falling off and improving the overall structural stability of the clip.

[0022] The adjusting component adopts a double self-locking design with toothed interlocking and elastic buckle. The toothed surface is embedded with stainless steel wear-resistant plates, which not only ensures the precise adjustment of the protective layer thickness, but also avoids retraction after adjustment and loosening during vibration. This keeps the protective layer thickness deviation within ±2mm, which is far superior to existing technologies and effectively improves the construction quality of the main reinforcement protective layer of the pole.

[0023] The preparation method of this invention adopts a composite process of insert injection molding, ultrasonic embedding, and CNC precision grinding, which realizes the integrated molding of metal parts and plastic body, ensuring the connection strength and processing accuracy of each component of the buckle; the parameters of each process are standardized, which is suitable for mass production, and the finished product is strictly inspected, which improves the yield of the buckle.

[0024] The application method of this invention does not require professional welding or binding tools, and can be completed by a single person, which greatly improves the construction efficiency of the pole reinforcement cage; the clips are permanently bonded to the concrete and do not need to be removed, avoiding the damage to the concrete surface caused by the removal of positioning parts in the prior art. At the same time, the clips play a supporting and positioning role for the casting mold, preventing the reinforcement cage from shifting, and further improving the overall structural strength of the pole.

[0025] The buckle body is equipped with anti-displacement ribs and metal springs with anti-corrosion and wear-resistant treatment, making it suitable for harsh construction environments such as coastal and humid areas. The adjustment rod is equipped with scale lines to achieve visual and rapid adjustment of the protective layer thickness, further optimizing the construction experience and making it widely applicable. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is an overall structural view of the present invention;

[0028] Figure 2 This is a bottom view of the overall structure of the present invention;

[0029] Figure 3 This is a right view of the overall structure of the present invention;

[0030] Figure 4 This is a cross-sectional view of the adjusting member of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Buckle body; 2. Engaging groove; 3. Metal spring piece one; 4. Metal spring piece two; 5. Adjusting component; 6. Adjusting sleeve; 7. Adjusting rod; 8. Movable groove one; 9. Tooth one; 10. Adjusting groove two; 11. Tooth two. Detailed Implementation

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

[0034] Please refer to Figures 1-4. This invention provides a technical solution: a metal buckle for the protective layer of the main reinforcement of a utility pole with adaptive clamping function, including a buckle body 1. The buckle body 1 is made of modified high-density polyethylene and has a C-shaped structure with an arc-shaped locking groove 2 inside. The locking groove 2 is open at both ends. The upper end face and the side face of the buckle body 1 are heat-fused to fix the adjusting component 5. The adjusting component 5 includes an adjusting sleeve 6 and an adjusting rod 7. One end of the adjusting rod 7 is movably inserted into the adjusting sleeve 6. The connection between the adjusting sleeve 6 and the buckle body 1 is provided with reinforcing ribs.

[0035] The inner wall of the adjusting sleeve 6 has a movable groove 8, and the outer surface of the adjusting rod 7 has a corresponding movable groove 10. Movable groove 8 has a fixed tooth 9 inside, and movable groove 10 has a fixed tooth 11 inside. Tooth 9 and tooth 11 are right-angled trapezoids and their inclined surfaces fit together. Stainless steel wear-resistant plates are embedded on the surface. The adjusting rod 7 has a protective layer thickness scale line, and the connection between the adjusting sleeve 6 and the adjusting rod 7 is equipped with an elastic lock.

[0036] The locking groove 2 has C-shaped metal springs 3 at both ends and C-shaped metal springs 4 at the front and rear edges. Both are made of 65Mn spring steel and have anti-corrosion treatment on the surface. One end is embedded in the buckle body 1. The buckle body 1 has annular anti-displacement ribs on the surface that contacts the concrete.

[0037] The preparation method of the buckle includes the following steps: S1, raw material preparation and pretreatment: high-density polyethylene base material is mixed with 3% UV stabilizer, 2% toughening agent and 1% antioxidant, mixed at high speed at 80℃ for 15min, granulated by twin-screw extruder and dried to a moisture content ≤0.05% to obtain modified high-density polyethylene granules; 65Mn spring steel is cold rolled to 1.0mm thickness, tempered at 300℃ and cut into spring sheet blanks; POM granules are dried to a moisture content ≤0.02%, and stainless steel plates are cut and polished into wear-resistant sheets. S2. Molding and Insertion of the Buckle Body: Precisely place metal spring 3 and metal spring 4 into the positioning groove of the injection mold. Adjust the injection molding machine temperature to 190℃, injection pressure to 90MPa, and mold temperature to 45℃. Inject modified high-density polyethylene molten material. After cooling and molding, open the mold and finely grind the engagement groove 2 until the smoothness Ra≤0.8μm to obtain the buckle body blank. S3. Precision Molding and Gear Structure Processing of Adjusting Parts: Adjust the injection molding machine temperature to 180℃ and injection pressure to 80MPa. Inject and mold the adjusting sleeve 6 and adjusting rod 7. Fix the stainless steel wear-resistant sheet into the movable groove 8 and movable groove 10 through ultrasonic embedding process to form teeth 9 and 11. CNC precision grinding ensures that the tooth meshing gap is ≤0.03mm. Insert the adjusting rod 7 into the adjusting sleeve 6 to complete the pre-installation of the adjusting part 5. S4. Assembly and Overall Performance Testing: The adjusting component 5 is heat-fused to the main body blank of the buckle at 125℃, and reinforcing ribs are added. The finished buckle is tested. The metal spring clips clamp the steel bars repeatedly for 500 cycles without permanent deformation. The adjusting component adjusts smoothly without jamming. The main body of the buckle withstands 500N of pressure without deformation. The tensile strength of each connection part is ≥200N. After passing the test, the finished product is obtained. S5. Finished Product Packaging and Storage: The finished product is individually packaged in anti-static plastic boxes and stored in a warehouse with a temperature of 25℃ and a humidity of 50%.

[0038] The application method of this clip includes the following steps: T1. Pre-construction preparation and clip selection: Select a pre-made clip suitable for 18mm main reinforcement and 8mm circumferential reinforcement, and clean the rust and oil stains from the surface of the reinforcement connection node. T2. Precise positioning of reinforcement node and adaptive clamping of clip: Mark the installation position on the main reinforcement at 600mm intervals, clip the circumferential reinforcement into metal spring clip 1 3, and the main reinforcement into metal spring clip 2 4. Adaptive clamping is achieved through elastic deformation. Use a rubber mallet to fine-tune so that the clip is perpendicular to the reinforcement node. T3. Precise adjustment of protective layer thickness: Adjust the protective layer thickness to 25mm according to the design requirements, pull the adjustment rod 7 outward, and determine the position through the scale line. The elastic lock automatically engages to achieve double self-locking, and the thickness deviation is controlled within ±2mm. T4. Installation and Protection of Casting Molds: The casting molds are fitted onto the outside of the reinforcing steel frame, ensuring a tight fit between the inner wall of the mold and the outer end of the adjusting piece 5. Concrete is poured, avoiding impact from the vibrator against the clips. After initial setting, the clips permanently bond with the concrete. T5. Post-Curement and Finished Product Inspection: The concrete is cured with moisture for 7 days. After the pole is finished, the thickness of the protective layer of the main reinforcing bars is inspected, and all meet the design requirement of 25mm.

[0039] When in use, the buckle of this invention achieves adaptive clamping of the main reinforcement and circumferential reinforcement of the pole through the elastic deformation of the buckle body and the metal spring. The adjusting component enables precise adjustment and self-locking of the protective layer thickness. The manufacturing process is standardized and scalable, and the application method is simple and efficient. It effectively solves the defects of existing pole main reinforcement protective layer positioning components and improves the quality and efficiency of pole production and construction.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function, comprising a clip body (1), characterized in that: The buckle body (1) is made of modified high-density polyethylene and has a C-shaped structure. The buckle body (1) has an arc-shaped locking groove (2) inside and the locking groove (2) has an open structure at both ends. The upper end and side of the buckle body (1) are fixedly connected with adjusting parts (5). The adjusting parts (5) are used to adjust the distance between the main reinforcement of the pole and the inner wall of the casting mold to control the thickness of the concrete pouring on the outside of the pole. Both ends of the locking groove (2) are provided with metal spring sheet 1 (3) with a C-shaped cross section, and the two sides of the metal spring sheet 1 (3) are designed with an arc structure. One end of the metal spring sheet 1 (3) is embedded in the buckle body (1) and the metal spring sheet 1 (3) is used in conjunction with the locking groove (2) to lock and fix the circumferential steel bars of the pole. Metal springs (4) are provided on the front and rear edges of the locking groove (2). The metal springs (4) are designed in a C-shape and the two ends of the metal springs (4) are designed in an arc shape. The metal springs (4) are embedded in the buckle body (1) and used to cooperate with the buckle body (1) to lock and fix the main reinforcement of the pole. Through the elastic deformation of the buckle body (1) and the elastic deformation of the metal springs (3) and (4), the adaptive clamping and fixing of the main reinforcement and the circumferential reinforcement of the pole can be achieved.

2. The metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function according to claim 1, characterized in that: The adjusting component (5) includes a cylindrical adjusting sleeve (6) and an adjusting rod (7). One end of the adjusting rod (7) is movably inserted into the adjusting sleeve (6). The end of the adjusting sleeve (6) away from the adjusting rod (7) is heat-fused and fixedly connected to the buckle body (1), and the connection part is provided with reinforcing ribs.

3. The metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function according to claim 2, characterized in that: The inner wall of the adjusting sleeve (6) is provided with a movable groove 1 (8), and the outer surface of the adjusting rod (7) is provided with a movable groove 2 (10) corresponding to the movable groove 1 (8). The movable groove 1 (8) is fixed with teeth 1 (9) at equal intervals, and the movable groove 2 (10) is fixed with teeth 2 (11) at equal intervals. The cross sections of teeth 1 (9) and teeth 2 (11) are both designed with right-angled trapezoidal structures, and their inclined surfaces are fitted together. The surfaces of teeth 1 (9) and teeth 2 (11) are both embedded with stainless steel wear-resistant plates to realize the unidirectional extension and self-locking of the adjusting rod (7).

4. The metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function according to claim 1, characterized in that: The first metal spring (3) and the second metal spring (4) are both made of 65Mn spring steel and the surface is treated with anti-corrosion and wear-resistant treatment; the surface of the buckle body (1) that contacts the concrete is provided with annular anti-deviation ribs.

5. A metal clip for the protective layer of the main reinforcement of a utility pole with adaptive clamping function according to claim 1, characterized in that: The outer surface of the adjusting rod (7) is provided with a protective layer thickness scale line, and an elastic buckle is added to the connection between the adjusting sleeve (6) and the adjusting rod (7) to realize the double self-locking of the adjusting component (5).

6. A method for preparing a metal clip with adaptive clamping function for the main reinforcement protective layer of a utility pole as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Raw material preparation and pretreatment: Prepare modified high-density polyethylene particles as the main body of the buckle (1) as raw material, prepare 65Mn spring steel billet after cold rolling and tempering as raw material for metal spring sheet one (3) and metal spring sheet two (4), and prepare dried POM particles and polished stainless steel wear-resistant sheets as raw material for adjustment parts (5). S2, Buckle body molding and metal spring insert: Using the insert injection molding process, the metal spring one (3) and metal spring two (4) are precisely positioned in the injection mold, and the modified high-density polyethylene melt is injected. After cooling and molding, the metal spring and buckle body (1) are integrated and inserted. After fine grinding, the buckle body blank is obtained. S3. Precision forming of adjustment parts and processing of meshing structure: The adjustment sleeve (6) and the adjustment rod (7) are injection molded. The stainless steel wear-resistant sheet is fixed in the movable groove one (8) and movable groove two (10) through ultrasonic embedding process to form teeth one (9) and teeth two (11). After CNC precision grinding and shaping, the adjustment rod (7) is inserted into the adjustment sleeve (6) to complete the pre-installation of adjustment parts (5). S4. Assembly and overall performance testing: The adjustment part (5) is fixed to the designated position of the buckle body blank through hot melt connection process. The finished buckle is tested for elastic recovery, smooth adjustment, compressive strength and tensile strength. After the test is qualified, the finished product is completed. S5. Finished product packaging and storage: Anti-static independent packaging is adopted and stored in an environment with a temperature of 25±5℃ and humidity ≤60%.

7. The method for preparing a metal clip with adaptive clamping function for the main reinforcement protective layer of a utility pole according to claim 6, characterized in that: In step S1, the modified high-density polyethylene granules are prepared by mixing and granulating high-density polyethylene base material with 3% UV stabilizer, 2% toughening agent and 1% antioxidant in a mass ratio, and drying to a moisture content ≤0.05%; the 65Mn spring steel billet is cold-rolled to a thickness of 0.8-1.2mm and then subjected to low-temperature tempering treatment at 300℃, with an elastic recovery rate ≥95%; the POM granules are dried to a moisture content ≤0.02%.

8. The method for preparing a metal clip with adaptive clamping function for the main reinforcement protective layer of a utility pole according to claim 6, characterized in that: In step S2, the injection molding process parameters are: injection temperature 180-200℃, injection pressure 80-100MPa, mold temperature 40-50℃; the smoothness Ra of the groove wall after fine grinding of the locking groove (2) is ≤0.8μm; in step S3, the injection temperature of the adjusting sleeve (6) and the adjusting rod (7) is 170-190℃, the injection pressure is 70-90MPa, and the mating gap between tooth one (9) and tooth two (11) is ≤0.03mm.

9. The method for preparing a metal clip with adaptive clamping function for the main reinforcement protective layer of a utility pole according to claim 6, characterized in that: In step S4, the hot-melt connection temperature is 120-130℃; the performance test standards are: no permanent deformation after the metal spring clip clamps the steel bar repeatedly for 500 times, no jamming during the adjustment of the adjustment stroke, no deformation when the buckle body withstands 500N pressure, and the tensile strength of each connection part is ≥200N.

10. A method for applying a metal clip with adaptive clamping function for the main reinforcement protective layer of a utility pole as described in any one of claims 1-5, characterized in that, Includes the following steps: T1. Pre-construction preparation and clip selection: Select matching finished clips according to the specifications of the main reinforcement and circumferential reinforcement of the pole, and clean the rust, oil and residue from the surface of the reinforcement connection nodes; T2. Precise positioning of steel bar nodes and adaptive clamping of buckles: Mark the installation position on the main bar of the steel bar skeleton of the pole at a design spacing of 500-800mm, insert the circumferential steel bar into the metal spring plate one (3) and the main bar into the metal spring plate two (4), and achieve adaptive clamping through elastic deformation. Make fine adjustment with a rubber hammer to ensure that the buckle is perpendicular to the steel bar node. T3. Precise adjustment of protective layer thickness: According to the design requirements of the pole, pull the adjustment rod (7) outward to achieve unidirectional elongation by using toothed engagement. Determine the protective layer thickness by measuring the scale line or tape measure. The elastic lock automatically engages to achieve double self-locking. When it is necessary to shorten the pole, press to unlock and push the adjustment rod (7) back to the designated position so that the protective layer thickness deviation is controlled within ±2mm. T4. Installation of casting mold and protection during casting: The casting mold is placed on the outside of the steel reinforcement cage so that the inner wall of the mold is tightly fitted with the outer end of the adjusting part (5) and the buckle is used to support and position the mold; avoid the vibrator hitting the buckle directly during concrete casting. After initial setting, the buckle is permanently bonded to the concrete and does not need to be removed. T5. Post-construction maintenance and finished product inspection: Moisturize and heat-insulate according to the requirements for concrete pole maintenance. After the finished product is formed, inspect the thickness of the main reinforcement protective layer to ensure that it meets the design requirements.

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