Newly-built concrete pole stay wire reinforcing device

Abstract

The invention relates to a newly-built concrete pole stay wire reinforcing device which comprises a pulley block hoop and a stay wire group hoop which are clamped and fixed to the outer wall of a concrete pole. A plurality of pulleys which are uniformly distributed in the circumferential direction are mounted on the pulley block hoop; a plurality of stay wire adjusting devices which are uniformly distributed in the circumferential direction are mounted on the stay wire group hoop; one end of the stay wire is connected to the stay wire adjusting device, and the other end bypasses the pulley, is fixed on the pull disc and is fixedly buried underground together with the pull disc; when the strain sensors detect that deformation of the steel bars exceeds the limit due to the fact that the wind speed is increased and the like, the electric sliding table tightens or loosens the pull wires, the pull force of the pull wires is adjusted, the concrete electric pole is reinforced, and the strength of the concrete electric pole is improved; the service life of the concrete pole is prolonged. And real-time monitoring and dynamic adjusting capabilities are achieved, and the structural performance can be automatically adjusted according to the actual stress state of the concrete pole.

Description

Technical Field

[0001] The invention relates to the technical field of concrete poles, and in particular to a wire reinforcement device for a newly built concrete pole. Background Art

[0002] Annular concrete poles are widely used in distribution networks, with tens of thousands of poles put into use every year. During the use of distribution networks, annular concrete poles are subjected to multiple effects of external loads, soil pressure, and severe weather such as thunderstorms and storms. They are prone to problems such as bearing capacity decline and reduced pole strength, which are not conducive to the use of poles. As a result, a large number of concrete poles are damaged to varying degrees, such as cracks, and their service life is greatly affected.

[0003] Therefore, concrete poles are usually reinforced with external guy ropes and tensioners;

[0004] For example, the "wind-resistant and anti-tilting annular concrete pole" disclosed in patent announcement number CN218375662U strengthens and fixes the lower end of the pole, and the wire rope tensioner can tighten and fix the pole from all sides, which can buffer the pole when it is affected by wind and prevent the pole from tilting when affected by wind.

[0005] For example, the “new type of concrete pole” disclosed in patent announcement number CN206397248U can adjust the tension of the pull rope through a tensioner to adjust the vertical state of the pole.

[0006] However, in actual use, concrete poles are often subjected to external force impacts from all directions, causing the poles to deform to varying degrees, thereby affecting their bearing capacity and service life. Traditional reinforcement solutions for concrete poles often lack adaptability and are usually mechanical designs for specific directions. They do not have the ability to automatically adjust according to actual stress conditions and cannot effectively cope with multi-directional stress changes. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a new concrete pole wire reinforcement device to solve the above problems.

[0008] The present invention provides the following technical solutions:

[0009] A newly built concrete pole wire reinforcement device comprises a pulley block clamp and a wire block clamp which are clamped and fixed on the outer wall of the concrete pole;

[0010] The pulley block clamp is provided with a plurality of pulleys evenly distributed in the circumferential direction;

[0011] The wire clamp is provided with a plurality of wire adjustment devices evenly distributed in the circumferential direction;

[0012] A pull wire, one end of which is connected to the pull wire adjustment device, and the other end of which is passed through corresponding pulleys and fixed on the pull plate and fixed together and buried underground;

[0013] The strain sensors are respectively attached to different positions of the steel bars in the concrete pole and correspond one-to-one with the wire adjustment device, and the strain direction of the strain sensor is the axial direction of the strain sensor.

[0014] Preferably, the strain sensor includes a data sensor and strain gauges symmetrically connected on both axial sides of the data sensor.

[0015] Preferably, four of the pulley block hoops and four of the wire pull block hoops are provided and are distributed at 90° intervals.

[0016] Preferably, the wire adjustment device adopts an electric slide.

[0017] Preferably, a solar power supply unit is also included, and the solar power supply unit is used to supply power to the wire adjustment device and the strain sensor.

[0018] Preferably, the specific control strategy is as follows:

[0019] When the steel bar is strained, the strain measurement data of each group of strain sensors are collected, and the data measured by each group of strain sensors are compared to obtain the steel bar with the largest positive strain and the steel bar with the largest negative strain. If the maximum positive strain x of the steel bar is greater than the set positive critical microstrain, the corresponding wire adjustment device is loosened until the strain value of the strain sensor returns to the original value; if the maximum negative strain y of the steel bar is less than the negative critical microstrain, the corresponding wire adjustment device is tightened until the strain value of the strain sensor returns to the original value.

[0020] Preferably, before pouring the concrete pole, a strain sensor is attached to the steel bar, and the steel bar is clamped with clamping hoops on both upper and lower sides of the strain sensor, and a protective cover wrapping the strain sensor is provided between the two groups of clamping hoops.

[0021] Preferably, the protective cover is made of a thermoplastic polymer that shrinks when heated.

[0022] Preferably, a protective cover arranged between the two groups of the clamping hoops forms a sealed space, the protective cover is connected to a cable pipe, and the cable of the strain sensor passes through the cable pipe and extends to the outside of the concrete pole.

[0023] Preferably, when the concrete pole is cast, air is inflated into the sealed space formed by the protective cover through the cable tube; and after the initial setting of the concrete pole, the free end of the cable tube is opened.

[0024] The present invention has the following beneficial technical effects:

[0025] The present invention is applicable to newly built annular concrete poles. When the strain sensor detects that the steel bar deformation exceeds the limit due to the increase of wind speed or other conditions, the strain sensor will send a signal to the electric slide, and the slide will move up or down, tighten or loosen the pull wire, adjust the pull wire tension, reinforce the concrete pole, improve the strength of the concrete pole, and extend the service life of the concrete pole.

[0026] With real-time monitoring and dynamic adjustment capabilities, it can automatically adjust the structural performance according to the actual stress state of the concrete pole, thereby ensuring that the concrete pole can maintain optimal stability and safety under various complex working conditions. This can not only extend the service life of the concrete pole, but also significantly reduce the economic losses and safety hazards caused by the damage of the concrete pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the pulley block clamp and the wire pull block clamp of the present invention;

[0029] Figure 3 Schematic diagram of the structure of the strain sensor of the present invention;

[0030] Figure 4 It is a schematic diagram of the coordination of the steel bars, protective covers and other components of the present invention.

[0031] The reference numerals in the figure are:

[0032] 1. Concrete pole; 101. Steel bar; 2. Pulley clamp; 3. Cable clamp; 4. Cable adjustment device; 5. Pulley; 6. Cable; 7. Pull plate; 8. Strain sensor; 9. Clamping clamp; 10. Protective cover; 11. Cable pipe;

[0033] 81. Data sensor; 82. Strain gauge. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] A new concrete pole wire reinforcement device, such as Figure 1-3 As shown:

[0037] The invention comprises a strain sensor 8, a pull wire 6, a pulley block clamp 2, a pull wire block clamp 3, a pulley 5, a pull plate 7, a pull wire adjustment device 4 and a solar power supply unit.

[0038] The wire-pulling adjustment device 4 adopts an electric slide, a screw drive structure, an electric cylinder, etc.

[0039] One end of the pull wire 6 is connected to the output end of the pull wire adjustment device 4, and one end of the pull wire 6 is passed around the pulley 5 at a position 15 cm above the pull wire, fixed on the pull plate 7 and fixed together and buried underground.

[0040] There are four wire adjustment devices 4 and four pulleys 5. Adjacent wire adjustment devices 4 are 90° apart and extend circumferentially and are jointly installed on the wire group clamp 3. Adjacent pulleys 5 are 90° apart and extend circumferentially and are jointly installed on the pulley group clamp 2. The pulley group clamp 2 and the wire group clamp 3 are used to clamp and fix on the outer wall of the concrete pole 1, and the pulley group clamp 2 is located above the wire group clamp 3.

[0041] A group of strain sensors 8 are attached to the steel bars 101 opposite to each wire adjustment device 4. The strain direction of the strain sensor 8 is the axial direction of the steel bars 101. A group of strain sensors 8 is composed of two strain gauges 82 arranged vertically. The two strain gauges 82 are symmetrical in the horizontal direction. A data sensor 81 is arranged on the central axis to replace the terminal function of the strain gauge 82 and integrate the data collection and transmission function and the data collection function. The power line of the strain gauge 82 is led to the outside of the concrete pole 1 and connected to the solar power supply unit to power the strain gauge 82. When the strain gauge 82 detects excessive axial strain, it will send a signal to the signal receiving unit of the corresponding wire adjustment device 4, drive the wire adjustment device 4 to slide up / down, pull or tighten the wire, and play a role in reinforcing the concrete pole 1.

[0042] The four strain sensors 8 can be attached to the four side walls of the same set of steel bars 101; or the four strain sensors 8 can be attached to the side walls of their respective steel bars 101, and the four strain sensors 8 are oriented in different directions and are located at the front, back, left and right sides of the corresponding steel bars 101.

[0043] The specific control strategy is as follows: when the steel bar 101 is strained, the strain measurement data of the four groups of strain sensors 8 are collected, and the data measured by the four groups of strain sensors 8 are compared to obtain the steel bar 101 with the largest positive strain and the steel bar 101 with the largest negative strain. If the maximum positive strain x of the steel bar 101 is greater than the set positive critical microstrain, the wire adjustment device 4 on the side where the steel bar 101 is located is slid downward, and the wire adjustment device 4 on the opposite side is loosened until the strain value of the strain sensor 8 returns to the original value; if the maximum negative strain y of the steel bar 101 is less than the negative critical microstrain, the wire adjustment device 4 on the side where the steel bar 101 is located is slid upward, and the wire adjustment device 4 on the opposite side is tightened until the strain value of the strain sensor 8 returns to the original value.

[0044] The wire adjustment device 4 is mainly powered by a solar power supply unit.

[0045] Rubber pads of the same size are used to wrap the loops of the pulley block clamp 2 and the wire pull block clamp 3 to prevent the clamp locking force from damaging the concrete pole 1.

[0046] The present invention reduces the closure of possible transverse cracks by applying the pulley block clamp 2 and the wire group clamp 3, and can enhance the integrity of the crack generation position at the reinforcement position, inhibit the further development of the crack, and further improve the strength of the concrete pole 1.

[0047] Embodiment 2: Contains all the contents of Embodiment 1, except that Figure 4 As shown:

[0048] The measurement accuracy of the strain sensor 8 depends on the strain transfer between it and the object being measured. If it is directly fixed with a clamp, additional strain transfer errors may be introduced, affecting the accuracy of the measurement results. The clamp may generate stress concentration at the contact point, resulting in the strain measured by the strain sensor 8 being inconsistent with the actual strain.

[0049] Therefore, when the strain sensor 8 is attached to the steel bar 101 and poured with concrete, the strain sensor 8 is restricted by the concrete, which may affect the accuracy of the measurement result.

[0050] Therefore, before pouring the concrete pole 1, the strain sensor 8 is bonded to the steel bar 101 by glue, the steel bar 101 clamps two clamping hoops 9, the strain sensor 8 is relatively located between the two clamping hoops 9, and a protective cover 10 is arranged between the two groups of clamping hoops 9, and the strain sensor 8 and part of the steel bar 101 are wrapped therein by the protective cover 10.

[0051] After that, the concrete pole 1 is poured with concrete, and the strain sensor 8 is isolated from the concrete by the protective cover 10, so that the area around the strain sensor 8 is hollowed out to prevent the strain sensor 8 from being affected by the concrete.

[0052] Embodiment 3 includes all the contents of Embodiment 2:

[0053] The hollow design near the strain sensor 8 may affect the efficiency of strain transmission from the steel bar to the strain gauge. The hollow part may cause uneven strain transmission and affect the accuracy of the measurement result.

[0054] The protective cover 10 is made of a thermoplastic polymer that shrinks when heated and has deformation capability. A sealed space is formed between the two sets of clamping hoops 9 and the protective cover 10. One end of the cable tube 11 is connected to the protective cover 10. The other end of the cable tube 11 extends to the outside of the concrete pole 1. The cable of the strain sensor 8 passes through the cable tube 11 and extends to the outside of the concrete pole 1.

[0055] When the concrete pole 1 is poured, air is inflated into the sealed space formed by the protective cover 10 through the cable tube 11, so that the protective cover 10 has a certain supporting force to prevent the protective cover 10 from being squeezed during the pouring of the concrete pole 1 and causing the strain sensor to shift, forming a small hollow space around the strain sensor 8.

[0056] After the initial setting of the concrete pole 1 / some time after the initial setting, the free end of the cable tube 11 is opened, so that the inner cavity of the protective cover 10 is connected to the external air. The cement generates heat during the solidification process, and the protective cover 10 shrinks due to the heat and returns to its original shape. The force of the protective cover 10 shrinking and recovering is much smaller than the adhesion force of the strain sensor 8 on the steel bar 101. The shrunken protective cover 10 just fits the strain sensor 8 and the steel bar 101 (or the gap is very small). The space left after the protective cover 10 shrinks due to the heat is slowly filled by the nearby concrete.

[0057] The thermal shrinkage speed of the protective cover 10 is much greater than the flow speed of the concrete pole 1;

[0058] Afterwards, the protective cover 10 can continue to be inflated to maintain a certain supporting force.

[0059] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A new concrete pole wire reinforcement device, characterized by: It comprises a pulley block clamp (2) and a wire clamp (3) which are clamped and fixed on the outer wall of a concrete pole (1); A plurality of pulleys (5) evenly distributed in the circumferential direction are mounted on the pulley block clamp (2); The wire pulling group clamp (3) is provided with a plurality of wire pulling adjustment devices (4) evenly distributed in the circumferential direction; A pull wire (6), one end of the pull wire (6) is connected to the pull wire adjustment device (4), and the other end is passed through corresponding pulleys (5) and fixed to a pull plate (7) and fixed together and buried underground; Strain sensors (8), each of the strain sensors (8) is attached to a steel bar (101) in a concrete pole (1) at a different position and corresponds one-to-one with a wire adjustment device (4), and the strain direction of the strain sensor (8) is the axial direction of the strain sensor (8).

2. A newly built concrete pole wire reinforcement device according to claim 1, characterized in that: The strain sensor (8) comprises a data sensor (81) and strain gauges (82) symmetrically connected to two axial sides of the data sensor (81).

3. A newly built concrete pole wire reinforcement device according to claim 1, characterized in that: The pulley block hoops (2) and the wire pull block hoops (3) are each provided with four and are distributed at intervals of 90 degrees.

4. A newly built concrete pole wire reinforcement device according to claim 1, characterized in that: The wire drawing adjustment device (4) adopts an electric slide.

5. A new concrete pole wire reinforcement device according to claim 1, characterized in that: It also includes a solar power supply unit, which is used to supply power to the wire adjustment device (4) and the strain sensor (8).

6. A newly built concrete pole wire reinforcement device according to claim 1, characterized in that: The specific control strategies are as follows: When the steel bar (101) is strained, the strain measurement data of each group of strain sensors (8) are collected, and the data measured by each group of strain sensors (8) are compared to obtain the steel bar (101) with the largest positive strain and the steel bar (101) with the largest negative strain. If the maximum positive strain x of the steel bar (101) is greater than the set positive critical microstrain, the corresponding wire adjustment device (4) is relaxed until the strain value of the strain sensor (8) returns to the original value; if the maximum negative strain y of the steel bar (101) is less than the negative critical microstrain, the corresponding wire adjustment device (4) is tightened until the strain value of the strain sensor (8) returns to the original value.

7. A new concrete pole wire reinforcement device according to claim 1, characterized in that: Before the concrete pole (1) is cast, a strain sensor (8) is attached to a steel bar (101), and the steel bar (101) is located on both upper and lower sides of the strain sensor (8) and clamps clamping hoops (9), and a protective cover (10) that wraps the strain sensor (8) is provided between two groups of the clamping hoops (9).

8. A new concrete pole wire reinforcement device according to claim 7, characterized in that: The protective cover (10) is made of a thermoplastic polymer that shrinks when heated.

9. A new concrete pole wire reinforcement device according to claim 8, characterized in that: A protective cover (10) arranged between the two groups of clamping hoops (9) forms a sealed space, and a cable tube (11) is connected to the protective cover (10), and the cable of the strain sensor (8) passes through the cable tube (11) and extends to the outside of the concrete pole (1).

10. A new concrete pole wire reinforcement device according to claim 9, characterized in that: When the concrete pole (1) is cast, air is inflated into the sealed space formed by the protective cover (10) through the cable tube (11); after the concrete pole (1) is initially set, the free end of the cable tube (11) is opened.

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