A device and method for internal reinforcement of concrete poles

Abstract

The application relates to the technical field of engineering reinforcement, and discloses a device and a method for reinforcing the inside of a concrete pole, wherein a support frame is fixed to a target height of the inner cavity of the pole; a deployable blocking unit has a folded state and an unfolded state, and the deployable blocking unit comprises a flexible blocking piece, an energy storage piece, a controllable trigger module and a transmission module; wherein the deployable blocking unit is in an elongated column shape in the folded state, is placed into the inner cavity of the pole through a second hole formed in the side wall of the pole, the energy storage piece stores elastic potential energy in the folded state, the controllable trigger module is used for releasing the constraint on the transmission module when an external trigger signal is received, the energy storage piece releases energy to drive the transmission module to act, the flexible blocking piece is switched from the folded state to the unfolded state, the unfolded flexible blocking piece is attached to the inner wall of the pole to form a plugging surface, and is supported on the support frame; the application realizes accurate positioning and plugging of the target reinforced section of the concrete in the inner cavity of the pole, and effectively avoids concrete loss.

Description

Technical Field

[0001] This invention relates to the field of engineering reinforcement technology, and in particular to a device and method for internal reinforcement of concrete utility poles. Background Technology

[0002] Concrete poles are mostly hollow structures with pointed ends. They are often reinforced by externally pouring concrete anti-collision blocks. However, this method is bulky and occupies a large area, which not only hinders traffic but also damages the appearance of the city. Existing technology proposes to fill the inside of the pole with concrete to enhance its impact resistance. However, the following problems exist in the actual grouting process: (1) If concrete is poured through a hole at the top of the pole, the operation is difficult and the high-altitude operation with live electricity is dangerous; (2) After the concrete is poured, it falls freely to the bottom of the pole. The bottom opening is prone to concrete loss, and concrete is also poured in the embedded section that does not need reinforcement, resulting in material waste; (3) It is impossible to achieve precise positioning and filling of concrete in the section of the pole that needs reinforcement.

[0003] Therefore, there is an urgent need for a reinforcement device that can achieve positioning and controllable sealing inside the pole to solve problems such as the inability to position grout, concrete loss, significant construction safety hazards, and material waste in existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus and method for internal reinforcement of concrete utility poles, aiming to solve or improve at least one of the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a device for internal reinforcement of concrete utility poles, comprising: The support frame is inserted into and fixed to the target height of the inner cavity of the pole through a first hole opened in the side wall of the pole. The deployable grout-blocking unit has a retracted state and a deployed state. The deployable grout-blocking unit includes a flexible grout-blocking component, an energy storage component, a controllable triggering module, and a transmission module. The deployable grout-blocking unit is slender and columnar in the retracted state, and its external dimensions allow it to be inserted into the inner cavity of the pole through a second hole opened in the side wall of the pole. The energy storage component stores elastic potential energy in the retracted state. The controllable triggering module is used to release the constraint on the transmission module when it receives an external trigger signal. The energy storage component releases energy to drive the transmission module to move, so that the flexible grout-blocking component switches from the retracted state to the deployed state. The deployed flexible grout-blocking component fits against the inner wall of the pole to form a sealing surface and is supported on the support frame.

[0006] Optionally, the support frame is formed by at least two intersecting screws, which pass through the first hole in the side wall of the pole and have their ends protrude from the outer surface of the pole, and are tightened and fixed by nuts.

[0007] Optionally, the transmission module includes a base, a main column, a connecting plate, and several connecting rods and several fixing rods; The main column is fixed to the base, the connecting plate can slide along the main column, one end of the fixing rod is hinged to the base, one end of the connecting rod is hinged to the connecting plate, and the other end is hinged to a rotating shaft slider. The rotating shaft slider is slidably fitted on the fixing rod, and the flexible slurry blocking component is fixed to multiple fixing rods by a fixing device.

[0008] Optionally, the energy storage component is a spring, sleeved on the main column, with one end fixed to the base and the other end fixed to the connecting plate.

[0009] Optionally, the controllable trigger module includes a resistance heating device, a heat-conducting ring, a connecting ring, and a constraint rope; The resistance heating device and the heat-conducting ring are fixed to the upper end of the main column. The heat-conducting ring is connected to the resistance heating device. The constraint rope is tied to the heat-conducting ring and the connecting plate through a connecting ring. When the resistance heating device is powered on, it heats the heat-conducting ring and can melt the constraint rope.

[0010] Optionally, the restraint rope is a nylon rope or a polyester rope.

[0011] Optionally, the heat-conducting ring is a metal ring.

[0012] Optionally, the flexible slurry blocking component is a foldable, high-performance flexible material.

[0013] Optionally, the fastening device is a male-female buckle or Velcro.

[0014] The present invention also provides a method for internal reinforcement of concrete utility poles, comprising the following steps: The first hole is made in the side wall of the pole and a support frame is installed to the target height inside the pole cavity; A second hole is made in the side wall of the pole, and the deployable grout-blocking unit in the retracted state is inserted into the inner cavity of the pole through the second hole; A trigger signal is sent to the controllable trigger module to release the constraint on the transmission module, causing the energy storage component to release energy, drive the flexible slurry blocking component to unfold and adhere to the inner wall of the pole to form a sealing surface, and place it above the support frame; Concrete is poured into the pole through the second hole, so that the concrete is blocked within the target reinforcement section above the sealing surface. After the concrete has hardened, the second hole is sealed.

[0015] The present invention discloses the following technical effects: This invention involves installing a support frame through a first hole in the sidewall of the utility pole, and utilizing a deployable grout-blocking unit that can be inserted through a second hole. In its retracted state, the unit is small and easy to insert. Upon triggering, an energy storage device releases energy to drive a transmission module, causing the flexible grout-blocking unit to automatically deploy, fitting against the inner wall of the pole to form a reliable sealing surface and supporting it on the support frame. This achieves precise positioning and sealing of concrete within the target reinforcement section of the pole, effectively preventing concrete loss, eliminating the need for high-altitude work from the top, and significantly improving construction safety. Furthermore, it only requires a small hole in the sidewall of the pole, causing minimal damage to the original structure, and the integrity of the pole can be restored by sealing the hole after construction. In addition, the device has a simple structure, is easy to prefabricate, can adapt to the internal grouting reinforcement needs of poles of different specifications, saves material costs, replaces traditional external anti-collision blocks, and reduces the occupation of public space.

[0016] This invention can effectively solve the problems of inability to position and fill concrete during grouting inside utility poles and concrete loss. Combined with the idea of ​​internal grouting reinforcement of utility poles, it fundamentally improves the impact resistance of the pole body, replaces the traditional external concrete anti-collision block, and reduces the waste of public space and building material resources.

[0017] The device of this invention has a simple structure, is easy to process, and has a low cost. Each component can be prefabricated in the processing yard. During construction, it is only necessary to drill holes at the corresponding positions on the pole, open holes in the grouting material of the pole to insert the device, and control the controllable trigger module to complete the deployment. The deployment is efficient and convenient, without the need for complex construction equipment. Moreover, the second hole in the grouting material of the pole can be sealed after construction without damaging the overall structure of the pole.

[0018] This invention achieves automatic deployment of the circular blocking device by using spring energy storage, resistance heating, and heat conduction through a heat-conducting ring to unlock the constraints. The deployment is smooth and the positioning is precise. The circular blocking structure formed by the flexible grout-blocking component is a concrete blocking component. After deployment, it can completely fit the inner wall of the pole and cover the internal cross-section, ensuring the sealing of the sealing surface and adapting to pressure changes during the grouting process, effectively preventing concrete leakage.

[0019] The device of this invention has a small volume when folded up and can be inserted through the second hole at the top of the pole without requiring large-scale modification of the pole, resulting in minimal damage to the original structure of the pole. The support frame can flexibly adjust the screw size and drilling position according to the pole specifications, adapting to common specifications such as 15-meter and 12-meter poles. It has strong versatility, can stably support the deployable grout-blocking unit after deployment, has a clear overall force transmission path, high support rigidity, and can withstand the concrete pressure during the grouting process. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a construction diagram of the present invention; Figure 2 This is a front view of the support frame of the present invention; Figure 3 This is a top view of the support frame of the present invention; Figure 4 This is a front view of the unfoldable slurry-blocking unit of the present invention in its retracted state; Figure 5 This is a top view of the deployable slurry-blocking unit of the present invention in its retracted state; Figure 6 This is a front view of the deployable slurry-blocking unit of the present invention in its deployed state; Figure 7 This is a top view of the deployable slurry-blocking unit of the present invention in its deployed state; In the diagram: 1. Pole; 2. Support frame; 3. Deployable grout-blocking unit; 4. Second hole; 5. Screw; 6. Nut; 7. Base; 8. Main column; 9. Energy storage component; 10. Connecting plate; 11. Connecting ring; 12. Restraint rope; 13. Resistance heating device; 14. Rotating shaft slider; 15. Fixing rod; 16. Fixing device; 17. Connecting rod; 18. Flexible grout-blocking component; 19. Heat-conducting ring. Detailed Implementation

[0021] 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.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Reference Figures 1 to 7This invention provides a device for reinforcing the interior of concrete utility poles, comprising: a support frame 2, which is inserted through a first hole in the side wall of the utility pole 1 and fixed to a target height within the inner cavity of the utility pole 1; and a deployable grout-blocking unit 3, having a retracted state and an extended state, the deployable grout-blocking unit comprising a flexible grout-blocking component 18, an energy storage component 9, a controllable triggering module, and a transmission module; wherein, in the retracted state, the deployable grout-blocking unit 3 is a slender column, the external dimensions of which allow it to be inserted into the inner cavity of the utility pole 1 through a second hole 4 in the side wall of the utility pole 1; in the retracted state, the energy storage component 9 stores elastic potential energy; the controllable triggering module is used to release the constraint on the transmission module when receiving an external trigger signal, the energy storage component 9 releases energy to drive the transmission module to move, causing the flexible grout-blocking component 18 to switch from the retracted state to the extended state; the extended flexible grout-blocking component 18 fits against the inner wall of the utility pole 1 to form a sealing surface and is supported on the support frame 2.

[0024] By separating the structure and coordinating the functions of the support frame 2 and the deployable grout-blocking unit 3, a step-by-step operation mode of first insertion, then deployment, and finally support is achieved. The slender, cylindrical design in its retracted state allows the deployable grout-blocking unit 3 to be easily inserted into the inner cavity of the pole 1 through a small hole, avoiding large openings that could damage the structural strength. The integrated design of the energy storage component 9, the controllable triggering module, and the transmission module enables the deployment action to be completed automatically without external mechanical intervention, requiring only remote triggering. This is particularly suitable for the narrow and inaccessible working environment inside the pole 1. After deployment, the flexible grout-blocking component 18 fits seamlessly with the inner wall of the pole 1. Combined with the fixed-point support of the support frame 2, a reliable temporary sealing surface is formed, thereby precisely confining the concrete within the target reinforcement section and solving the core problems of traditional grouting, such as the inability to locate the concrete and the loss of concrete.

[0025] In this embodiment, the support frame 2 is formed by at least two intersecting screws 5. The screws 5 pass through the first hole opened in the side wall of the pole and the end protrudes out of the outer surface of the pole 1. They are tightened and fixed by nuts 6.

[0026] The support frame 2, constructed using studs 5 arranged in a cross pattern (e.g., a cross shape), features a simple structure and balanced stress distribution. The studs 5 penetrate the sidewall of the pole 1 and are secured by external nuts 6, eliminating the need for welding or complex assembly inside the pole 1, thus simplifying construction. The cross arrangement ensures that the support points cover multiple directions of the pole 1's internal cross-section, evenly bearing the pressure from the upper flexible grout-blocking component 18 and the concrete, preventing overturning or displacement. Furthermore, the fit between the studs 5 and nuts 6 is adjustable, allowing for fine-tuning of the extension length according to the actual inner diameter of the pole 1, adapting to poles of different wall thicknesses and enhancing the device's versatility.

[0027] In this embodiment, the transmission module includes a base 7, a main column 8, a connecting plate 10, and several connecting rods 17 and several fixing rods 15. The main column 8 is fixed on the base 7, the connecting plate 10 can slide along the main column 8, one end of the fixing rod 15 is hinged to the base 7, one end of the connecting rod 17 is hinged to the connecting plate 10, and the other end is hinged to a rotating shaft slider 14. The rotating shaft slider 14 is slidably engaged with the fixing rod 15, and the flexible slurry blocking component 18 is fixed to the multiple fixing rods 15 by a fixing device 16.

[0028] A multi-link linkage mechanism is employed to convert the linear sliding of the connecting disc 10 into the radial swing of the fixed rod 15, thereby achieving the umbrella-shaped movement of the flexible grout-blocking component 18 from retraction to deployment. The sliding engagement of the rotating shaft slider 14 on the fixed rod 15 makes the angle change between the connecting rod 17 and the fixed rod 15 smoother, avoiding mechanical jamming and ensuring smooth and reliable deployment. Multiple fixed rods 15 are arranged circumferentially to evenly expand the flexible grout-blocking component 18, making it fit more tightly against the inner wall of the pole 1 without wrinkles or local warping, thus ensuring the sealing of the sealing surface. This mechanism has a compact structure and high transmission efficiency, making it suitable for achieving large-stroke deployment within the limited space inside the pole 1.

[0029] In this embodiment, the energy storage component 9 is a spring, which is sleeved on the main column 8, with one end fixed to the base 7 and the other end fixed to the connecting plate 10.

[0030] As an energy storage component, the spring offers advantages such as low cost, high reliability, and rapid response. The spring is sleeved on the main column 8, saving space and ensuring linear guidance during compression or tension, preventing lateral bending. In the retracted state, the spring is stretched to store elastic potential energy; once the constraint is released, the spring contracts and releases energy, directly driving the connecting disc 10 to slide along the main column 8, requiring no additional power source. This is particularly suitable for construction environments where there is no power or air supply inside the pole 1. The spring force can be selected based on the required unfolding force and the inner diameter of the pole 1, facilitating standardized design.

[0031] In this embodiment, the controllable triggering module includes a resistance heating device 13, a heat-conducting ring 19, a connecting ring 11, and a restraint rope 12. The resistance heating device 13 and the heat-conducting ring 19 are fixed to the upper end of the main body column 8. The heat-conducting ring 19 is connected to the resistance heating device 13. The restraint rope 12 is tied to the heat-conducting ring 19 and the connecting plate 10 through the connecting ring 11. When the resistance heating device 13 is powered on, it heats the heat-conducting ring 19 and can melt the restraint rope 12.

[0032] This controllable triggering module employs an electrothermal fusing principle, enabling remote, flameless, and low-power unlocking. The constraint rope 12 simultaneously binds the heat-conducting ring 19 and the connecting ring 11 on the connecting disc 10, effectively constraining the connecting disc 10 in the retracted state and preventing premature spring release. When deployment is required, simply powering the resistance heating device 13 via an external power source causes heat to be rapidly concentrated on the constraint rope 12 through the highly thermally conductive ring 19, causing it to partially fuse. This method is more reliable than mechanical triggering, avoiding false triggering caused by friction or vibration of the inner wall of the pole 1; it also eliminates the need for a pre-installed through-cable, simplifying the device structure. The constraint rope 12 leaves minimal residue after fusing, preventing blockage or interference with the linkage movement.

[0033] In this embodiment, the constraint rope 12 is a nylon rope or a polyester rope. Nylon or polyester ropes possess high strength, high toughness, and moisture resistance, enabling them to withstand the tensile force of the spring in the retracted state without breaking, ensuring the structural integrity of the device during insertion. Simultaneously, these two materials have moderate heat-melting temperatures (approximately 200-260°C), allowing them to melt rapidly within seconds when used with the resistance heating device 13 and the heat-conducting ring 19, providing a quick response and producing no conductive residue or corrosive gases after melting, ensuring good safety. Furthermore, nylon and polyester ropes are common industrial consumables, low in cost and readily available, facilitating mass production and on-site maintenance of the device.

[0034] In this embodiment, the heat-conducting ring 19 is a metal ring. The metal ring (preferably copper or aluminum alloy) has a high thermal conductivity, which can quickly and evenly transfer the heat generated by the resistance heating device 13 to the binding area of ​​the restraint rope 12, avoiding local overheating or incomplete melting.

[0035] In this embodiment, the flexible grout-blocking component 18 is made of a foldable high-performance flexible material. Using a foldable high-performance flexible material such as high-strength polyester fiber cloth, aramid cloth, or coated fabric, it can be folded into a very small volume in the collapsed state, facilitating insertion through the second hole 4; after unfolding, it can conform to the curved surface of the inner wall of the pole 1, achieving a gapless fit, with better sealing performance than a rigid baffle; the flexible material has a certain elastic deformation capacity, and can adaptively fine-tune under the dynamic pressure generated by concrete grouting, avoiding damage to rigid components or grout leakage due to pressure impact. Furthermore, the flexible material is lightweight, placing little additional load on the supporting frame 2, and is corrosion-resistant and durable, allowing it to remain inside the pole 1 for a long time without needing to be removed.

[0036] In this embodiment, the fixing device 16 is a snap fastener or Velcro. Using snap fasteners or Velcro as the fixing device 16 enables a quick and detachable connection between the flexible grout-blocking component 18 and the fixing rod 15. Snap fasteners (such as snap buttons) or Velcro are easy to install and require no tools. The flexible grout-blocking component 18 can be pre-fixed to the fixing rod 15 during the device prefabrication stage, ensuring accurate positioning after folding. Compared to riveting or bolting, this type of connection does not create stress concentration holes in the flexible material, avoiding tearing during unfolding. Furthermore, if it is necessary to replace the flexible grout-blocking component 18 with one of different sizes or materials to adapt to different pole specifications, it can be easily disassembled and replaced, improving the maintainability and versatility of the device. The continuous adhesive surface of the Velcro also provides uniform fixing force, preventing localized slippage.

[0037] The present invention also provides a method for internal reinforcement of concrete utility poles, comprising the following steps: A first hole is made in the side wall of pole 1 and a support frame 2 is installed to the target height of the inner cavity of pole 1. Specifically, two first holes are made diagonally at ground level on the inner wall of pole 1. Two screws 5 are symmetrically inserted into the holes. The positions of the screws 5 are adjusted so that they are arranged in a cross shape. The screws are then tightened with nuts 6 to form a stable cross-shaped support frame 2, ensuring that it can provide sufficient support for the deployable grout-blocking unit 3 and withstand the concrete pressure during the grouting process.

[0038] A second hole 4 is made on the side wall of pole 1, and the deployable grout-blocking unit 3 in the retracted state is inserted into the inner cavity of pole 1 through the second hole 4; specifically, a second hole 4 is made at the grouting material of pole 1, and the assembled retracted device is vertically sent into the inner cavity of pole 1 through the hole, and the device is pushed to a designated position above the cross-shaped support frame 2.

[0039] A trigger signal is sent to the controllable trigger module to release the constraint on the transmission module, causing the energy storage component 9 to release energy and drive the flexible grout blocking component 18 to unfold and adhere to the inner wall of the pole 1 to form a sealing surface, which is then placed above the support frame 2. Specifically, the resistance heating device 13 at the top of the main column 8 is activated by power, and the heat is quickly conducted to the heat-conducting ring 19. The constraint rope 12 that binds the heat-conducting ring 19 to the connecting plate 10 is quickly melted, and the device loses its constraint after the constraint rope 12 melts. The spring releases the stored energy and contracts, causing the octagonal connecting plate 10 to slide down along the main column 8, pushing the connecting rod 17 and the fixed rod 15 to work together, so that the flexible grout blocking component 18, the only concrete blocking component, can be fully unfolded, so that it can closely adhere to the inner wall of the pole 1 and completely cover the internal cross section. After unfolding, the mechanism naturally falls onto the cross-shaped support frame 2 to form a sealing surface.

[0040] Concrete is poured into the inside of pole 1 through the second hole 4, so that the concrete is blocked within the target reinforcement section above the sealing surface; specifically, concrete is poured into the inside of pole 1 through the pre-set second hole 4. After the concrete falls to the sealing surface, it is blocked and stays stably at the target reinforcement height, thus completing the positioning grouting reinforcement inside pole 1.

[0041] After the concrete has solidified, the second hole 4 will be sealed. Specifically, after the grout inside the pole 1 has solidified to the design strength, a sealing material compatible with the material of the pole 1 will be used to seal the second hole 4 at the grouting site of the pole tower, ensuring the structural integrity and sealing of the pole 1, and completing the entire anti-collision reinforcement construction of the pole 1.

[0042] This invention features a simple structure, convenient deployment, and low cost. It effectively solves the problems of inability to locate and fill the concrete during grouting of the pole 1, and the resulting concrete loss. Combined with the grouting reinforcement approach, it fundamentally improves the impact resistance of the pole 1, replacing traditional external concrete crash barriers and reducing the waste of public space and building materials. Furthermore, the addition of a connecting plate 10 and a connecting rod 17 optimizes the overall structure. The coordinated unlocking of the electrically controlled heating and the heat-conducting ring 19 ensures greater stability and faster response. The construction method of unfolding first and then lowering to the support frame 2 improves the fit and sealing stability between the device and the support frame 2. The second hole 4 at the grouting material location on the pole can be sealed after construction, minimizing damage to the pole 1 structure. It is adaptable to different specifications of poles 1, highly versatile, and easy to operate, making it widely applicable in the anti-collision reinforcement construction of various types of poles 1.

[0043] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0044] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for internal reinforcement of concrete utility poles, characterized in that, include: The support frame (2) is inserted through the first hole opened in the side wall of the pole (1) and fixed to the target height of the inner cavity of the pole (1); The deployable slurry blocking unit (3) has a retracted state and a deployed state. The deployable slurry blocking unit includes a flexible slurry blocking component (18), an energy storage component (9), a controllable triggering module, and a transmission module. The deployable grout-blocking unit (3) is slender and columnar in the retracted state. Its external dimensions allow it to be inserted into the inner cavity of the pole (1) through the second hole (4) opened on the side wall of the pole (1). The energy storage unit (9) stores elastic potential energy in the retracted state. The controllable triggering module is used to release the constraint on the transmission module when it receives an external triggering signal. The energy storage unit (9) releases energy to drive the transmission module to move, so that the flexible grout-blocking unit (18) switches from the retracted state to the deployed state. The deployed flexible grout-blocking unit (18) fits against the inner wall of the pole (1) to form a sealing surface and is supported on the support frame (2).

2. The device for internal reinforcement of concrete utility poles according to claim 1, characterized in that, The support frame (2) is formed by at least two screws (5) crossing each other. The screws (5) pass through the first hole opened in the side wall of the pole and the end protrudes out of the outer surface of the pole (1). They are tightened and fixed by nuts (6).

3. The device for internal reinforcement of concrete utility poles according to claim 1, characterized in that, The transmission module includes a base (7), a main column (8), a connecting plate (10), and several connecting rods (17) and several fixing rods (15). The main column (8) is fixed on the base (7), the connecting plate (10) can slide along the main column (8), one end of the fixing rod (15) is hinged to the base (7), one end of the connecting rod (17) is hinged to the connecting plate (10), and the other end is hinged to the rotating shaft slider (14). The rotating shaft slider (14) is slidably fitted on the fixing rod (15), and the flexible slurry blocking component (18) is fixed to multiple fixing rods (15) by a fixing device (16).

4. The device for internal reinforcement of concrete utility poles according to claim 3, characterized in that, The energy storage component (9) is a spring, which is sleeved on the main column (8), with one end fixed to the base (7) and the other end fixed to the connecting plate (10).

5. The device for internal reinforcement of concrete utility poles according to claim 3, characterized in that, The controllable triggering module includes a resistance heating device (13), a heat-conducting ring (19), a connecting ring (11), and a restraint rope (12). The resistance heating device (13) and the heat-conducting ring (19) are fixed to the upper end of the main column (8). The heat-conducting ring (19) is connected to the resistance heating device (13). The constraint rope (12) is tied to the heat-conducting ring (19) and the connecting plate (10) through the connecting ring (11). When the resistance heating device (13) is powered on, it heats the heat-conducting ring (19) and can melt the constraint rope (12).

6. The device for internal reinforcement of concrete utility poles according to claim 5, characterized in that, The restraint rope (12) is a nylon rope or a polyester rope.

7. The device for internal reinforcement of concrete utility poles according to claim 5, characterized in that, The heat-conducting ring (19) is a metal ring.

8. The device for internal reinforcement of concrete utility poles according to claim 1, characterized in that, The flexible slurry barrier (18) is made of a foldable, high-performance flexible material.

9. The device for internal reinforcement of concrete utility poles according to claim 3, characterized in that, The fastening device (16) is a male and female buckle or Velcro.

10. A method for internal reinforcement of a concrete pole based on the apparatus for internal reinforcement of a concrete pole according to any one of claims 1 to 9, characterized in that, Includes the following steps: A first hole is made in the side wall of the pole (1) and a support frame (2) is installed to the target height of the inner cavity of the pole (1); A second hole (4) is made in the side wall of the pole (1), and the deployable grout-blocking unit (3) in the retracted state is inserted into the inner cavity of the pole (1) through the second hole (4); Send a trigger signal to the controllable trigger module to release the constraint on the transmission module, so that the energy storage component (9) releases energy, drives the flexible slurry blocking component (18) to unfold and adhere to the inner wall of the pole (1) to form a sealing surface, and places it above the support frame (2); Concrete is poured into the pole (1) from the second hole (4) so ​​that the concrete is blocked in the target reinforcement section above the sealing surface; After the concrete has hardened, the second hole (4) is sealed.

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