Prestress reinforcing device for annular electric pole

Abstract

The invention relates to a prestress reinforcing device for an annular electric pole, and belongs to the technical field of power transmission line engineering, the prestress reinforcing device comprises an electric pole body, two fixing hoops are installed on the electric pole body, and an adjusting hoop is arranged between the two fixing hoops; the fixing hoop comprises two first connecting half hoops, and connecting plates are arranged on the outer sides of the first connecting half hoops. The adjusting hoop comprises two second connecting half hoops, and tensioning devices are arranged on the outer sides of the second connecting half hoops. Connecting plates are correspondingly arranged at the top end and the bottom end of the tensioning device, and steel twisted ropes are connected between the tensioning device and the connecting plate at the top end and between the tensioning device and the connecting plate at the bottom end. On the premise that the electric pole is not damaged, the anti-overturning capacity of the concrete electric pole can be effectively improved, the service life of the electric pole is prolonged, and installation is convenient and fast.

Description

Technical Field

[0001] The invention relates to a prestressed reinforcement device for an annular electric pole, belonging to the technical field of power transmission line engineering. Background Art

[0002] Annular concrete poles are widely used in power transmission lines due to their light weight, easy production, low cost, and strong environmental adaptability. They have become an important guarantee for the normal operation of power transmission lines. Due to long-term exposure to the air and the influence of the external environment, annular concrete poles are prone to surface cracks, steel rust, iron corrosion and other defects, which seriously affect the safety of power transmission lines. Cracks in annular concrete poles not only directly affect their bearing capacity, but also increase the degree of erosion of concrete and steel by harmful substances, thereby reducing the durability of annular concrete poles and increasing the operation risk of the power grid. Therefore, the reinforcement of concrete poles is urgent.

[0003] At present, the existing reinforcement methods are mainly based on external steel and FRP cloth, which may cause secondary damage to the structure and are not conducive to the sustainable use of concrete poles. In addition, in actual projects, as time goes by and under the action of external loads, the prestress of the prestressed reinforcement device will gradually relax and the stress will decrease, which will not meet the initial design requirements and the designed reinforcement effect, and will also reduce the tightening effect on the pole.

[0004] A new type of prestressed reinforced concrete pole with a new structure disclosed in the Chinese utility model patent with publication number CN218265260U includes a mounting base column and a concrete pole body, and a mounting mechanism is fixedly connected to the top of the mounting base column. The mounting mechanism includes a supporting chassis, which is fixedly connected to the top of the mounting base column, and a supporting column is fixedly connected to the middle of the top of the supporting chassis. Arc-shaped fixing plates are arranged on both sides of the supporting column, and the inner side of the arc-shaped fixing plate is fixedly connected to a limited position insert strip, and limited position slots are respectively provided on both sides of the supporting column, and mounting bolts are respectively provided on the surface of the arc-shaped fixing plate near both ends, and arc-shaped slots are respectively provided on both sides of the arc-shaped fixing plate, and openings are provided on the top and one side of the arc-shaped slots, and a threaded hole is provided on the top of the supporting chassis.

[0005] The above reference example improves installation efficiency by setting up an installation mechanism, but it will cause certain damage to the concrete pole, which is not conducive to the long-term use of the concrete pole, and the installation bolts may gradually loosen due to external force during use, so improvement is urgently needed. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the present invention designs a prestressed reinforcement device for annular poles, which can effectively improve the anti-overturning ability of concrete poles and extend the service life of poles without damaging the poles, and is easy and quick to install.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A prestressed reinforcement device for a ring-shaped electric pole, comprising an electric pole body, on which two fixed clamps are installed at intervals from top to bottom, and an adjustment clamp fixedly sleeved on the electric pole body is arranged in the middle position between the two fixed clamps;

[0009] The fixed hoop comprises two mutually spliced ​​connecting half hoops, both ends of the connecting half hoops are provided with extension plates extending outward, and the extension plates of the two connecting half hoops are locked and connected by a plurality of bolts; a pair of connecting plates are symmetrically provided on the outside of the two connecting half hoops;

[0010] The adjustment hoop comprises two mutually spliced ​​connecting half hoops 2, both ends of the connecting half hoops 2 are provided with extension plates 2 extending outward, and the extension plates 2 of the two connecting half hoops 2 are locked and connected by a plurality of bolts; a pair of tensioning devices are also symmetrically provided on the outer sides of the two connecting half hoops 2;

[0011] The connecting plates are correspondingly arranged at the top and bottom of each tensioning device, and steel ropes are connected between the tensioning device and the connecting plate at the top and between the tensioning device and the connecting plate at the bottom.

[0012] Furthermore, both ends of the first connecting half hoop and both ends of the second connecting half hoop are fixedly provided with step blocks, and the two step blocks overlap each other and are connected by a plug pin.

[0013] Furthermore, two symmetrically arranged reinforcing ribs are fixedly connected between the connecting plate and the connecting half hoop 1.

[0014] Furthermore, eight steel ropes are provided.

[0015] Furthermore, a detection device is provided on the side of the pole body, and the detection device includes two detection units. The detection unit includes a lifting mechanism, an arc-shaped detection plate and a detection sensor installed on the arc-shaped detection plate. One end of the arc-shaped detection plate is fixedly connected to a lifting plate, and the lifting plate is driven by the lifting mechanism and moves up and down along the pole body; the arc-shaped detection plates of the two detection units are arranged opposite to each other and on both sides of the pole body.

[0016] Further, the lifting mechanism includes a fixed sleeve fixedly mounted on the ground, a threaded rod rotatably sleeved in the fixed sleeve, a lifting assembly mounted inside the fixed sleeve, and a driving assembly for driving the threaded rod to rotate;

[0017] The surface of the fixed sleeve is provided with a vertical groove arranged along the length direction of the fixed sleeve;

[0018] The lifting assembly comprises a threaded sleeve threadedly sleeved with the threaded rod, a sliding sleeve is movably sleeved outside the fixed sleeve, an extension block is fixedly connected to the outside of the threaded sleeve, and the free end of the extension block extends out of the vertical slot and is fixedly connected to the bottom end of the sliding sleeve;

[0019] The lifting plate is fixedly connected to the side surface of the sliding sleeve.

[0020] Furthermore, a bottom plate is provided at the bottom end of the fixed sleeve, and the top end of the bottom plate is fixedly connected to the side surface of the fixed sleeve through two symmetrically arranged L-shaped support rods;

[0021] The top of the bottom plate is also fixedly connected to a mounting plate, a bevel gear 1 is rotatably mounted on a side of the mounting plate close to the fixed sleeve, and a bevel gear 2 is fixedly sleeved on the bottom end of the threaded rod after extending out of the fixed sleeve, and the bevel gear 1 and the bevel gear 2 are meshed with each other;

[0022] A forward and reverse motor for driving the bevel gear to rotate is installed on one side of the mounting plate away from the fixing sleeve.

[0023] Furthermore, an arc-shaped transverse groove is integrally provided at the top end of the vertical groove.

[0024] Furthermore, a plurality of barbed rods are fixedly connected to the bottom end of the base plate, and the barbed rods are buried inside the ground.

[0025] Furthermore, the arc-shaped detection plate is arranged between the adjusting clamp and the fixed clamp installed on the top of the adjusting clamp.

[0026] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0027] 1. The present invention can effectively improve the strength of the pole at the installation position through the setting of two fixed clamps and the adjustment clamp, thereby effectively improving the anti-overturning ability of the concrete pole and extending the service life of the pole, and the setting of the adjustment clamp can adjust the tension of the steel strand in real time, and then fine-tune the prestress according to actual needs to ensure that the pole is always in the best stress state. The setting of the step block and the plug pin can form a double connection with the bolt connection, further improving the connection strength of the clamp and providing sufficient restraint for the reinforced structure.

[0028] 2. The present invention can perform all-round inspection on the surface of the pole by controlling the synchronous up and down movement of two arc-shaped detection plates, which can avoid climbing inspection by operators. In addition, since the steel strands are arranged outside the pole, it will further hinder the inspection of operators. The setting of the detection device can greatly improve the convenience of maintenance work. At the same time, after the extension block moves to the top of the vertical slot, due to the setting of the transverse slot, the extension block will turn to the transverse slot under the rotation of the threaded rod. At this time, the lifting plate also rotates synchronously, so that the arc-shaped detection plate can be close to and pressed against the pole body. When the surface of the pole body is damaged, the damaged part can be effectively protected by bringing the two arc-shaped detection plates close to and pressing against the pole body, thereby buying time for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the installation structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the coordination of the fixed clamp and the adjustable clamp of the present invention;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of the fixed clamp of the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustable clamp of the present invention;

[0033] Figure 5 It is a partial matching schematic diagram of connecting the second half hoop of the present invention;

[0034] Figure 6 It is a schematic diagram of the cooperation of the step blocks of the present invention overlapping each other;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the detection device of the present invention;

[0036] Figure 8 It is a schematic diagram of the partial structure of the detection device of the present invention.

[0037] The accompanying drawings are marked as follows: 100, detection device; 1, pole body; 2, fixed clamp; 3, adjustment clamp; 4, steel rope; 5, connecting half clamp one; 6, extension plate one; 7, connecting plate; 8, reinforcing ribs; 9, connecting half clamp two; 10, tensioning device; 11, extension plate two; 12, step block; 121, pin hole; 122, plug pin; 13, bottom plate; 14, support rod; 15, fixed sleeve; 16, mounting plate; 17, bevel gear one; 18, bevel gear two; 19, vertical groove; 20, threaded rod; 21, transverse groove; 22, sliding sleeve; 23, lifting plate; 24, arc detection plate; 26, screwed sleeve; 27, extension block. DETAILED DESCRIPTION

[0038] The present invention is described in more detail below with reference to the embodiments.

[0039] Embodiment 1

[0040] See also Figures 1 to 6 The prestressed reinforcement device of the annular pole of this embodiment includes a pole body 1, on which two fixed clamps 2 are installed at intervals in the upper and lower parts, and an adjustment clamp 3 fixedly sleeved on the pole body 1 is arranged in the middle position between the two fixed clamps 2.

[0041] Specifically, the fixed clamp 2 includes two connecting half hoops 5 spliced ​​with each other, and both ends of the connecting half hoop 5 are extended outwardly with an extension plate 6, and the extension plates 6 of the two connecting half hoops 5 are locked and connected by a plurality of bolts; a pair of connecting plates 7 are also symmetrically arranged on the outside of the two connecting half hoops 5, and connecting holes are arranged on the connecting plates 7 for connecting the steel strands.

[0042] Specifically, the adjustment hoop 3 includes two connecting half hoops 29 that are spliced ​​with each other, and both ends of the connecting half hoops 29 are extended outward with extension plates 21, and the extension plates 211 of the two connecting half hoops 29 are locked and connected by a number of bolts; a pair of tensioning devices 10 are also symmetrically arranged on the outside of the two connecting half hoops 29, and the tensioning device 10 is integrated with a tensioning unit, which includes a mounting shell, a tensioning motor, a transmission screw, a slide, a tension sensor and a tension signal transmitter. The mounting shell plays the role of installation and protection. The tensioning motor is connected to the transmission screw in transmission, and the slide is slid up and down in the mounting shell, and the slide is threadedly connected to the transmission screw. After the tensioning motor is started, it can drive the transmission screw to rotate, and then drive the slide to slide in the mounting shell through the transmission screw, wherein the slide is connected to the steel rope 4.

[0043] The tension sensor is used to monitor the tension information of the steel strand 4 in real time, and the tension signal transmitter is used to transmit the tension information to the central control end. The central control end adjusts the tensioning device 10 to tighten the steel strand 4 at any time according to the collected tension information.

[0044] A connecting plate 7 is correspondingly provided at the top and bottom of each tensioning device 10 , that is, the connecting plate 7 is correspondingly provided just above or just below the tensioning device 10 to facilitate tightening the steel strand 4 .

[0045] The tensioning device 10 is composed of two tensioning units symmetrically arranged up and down, corresponding to the upper connecting plate 7 and the lower connecting plate 7 respectively.

[0046] Steel ropes 4 are connected between the tensioning device 10 and the top connecting plate 7 and between the tensioning device 10 and the bottom connecting plate 7. A total of eight steel ropes 4 are provided, with four steel ropes 4 distributed above and below, corresponding to each connecting plate 7 respectively.

[0047] Furthermore, step blocks 12 are fixedly provided at both ends of the connecting half hoop 1 5 and both ends of the connecting half hoop 2 9 , and the two step blocks 12 overlap each other and are connected by a plug pin 122 .

[0048] See also Figure 5 and Figure 6 Taking the connecting half hoop 29 as an example, both ends of the connecting half hoop 29 are connected with a secondary step block 12, and a pin hole 121 is opened on the step block 12, and the step blocks 12 at both ends of the connecting half hoop 29 are arranged symmetrically. In this way, when the two connecting half hoops 29 are connected, the two opposite step blocks 12 can be overlapped together, and then the plug pin 122 is plugged into the common area of ​​the two step blocks 12, that is, the two step blocks 12 can be clamped, and then the two extension plates 2 11 can be locked by bolts.

[0049] Furthermore, two symmetrically arranged reinforcing ribs 8 are fixedly connected between the connecting plate 7 and the connecting half hoop 1 5 to increase the connection stability.

[0050] From the above description, it can be seen that the beneficial effects of the present invention are: through the setting of two fixed clamps 2 and an adjustable clamp 3, the strength of the pole at the installation position can be effectively improved, thereby effectively improving the anti-overturning ability of the concrete pole and extending the service life of the pole, and the setting of the adjustable clamp 3 can adjust the tension of the steel strand 4 in real time, and then fine-tune the prestress according to actual needs to ensure that the pole is always in the best stress state, and the setting of the step block 12 and the plug pin 122 can form a double connection with the bolt connection, further improving the connection strength of the clamp and providing sufficient restraint for the reinforced structure.

[0051] Embodiment 2

[0052] See also Figure 1 , Figure 7 and Figure 8 A detection device 100 is arranged on the side of the pole body 1. The detection device 100 includes two detection units. The detection unit includes a lifting mechanism, an arc-shaped detection plate 24 and a detection sensor installed on the arc-shaped detection plate 24. In this embodiment, the detection sensor is a plurality of crack sensors. The crack sensors are installed at the top of the arc-shaped detection plate 24 and arranged along the length direction of the arc-shaped detection plate 24.

[0053] One end of the arc detection plate 24 is fixedly connected to a lifting plate 23 , and the lifting plate 23 is driven by a lifting mechanism and moves up and down along the pole body 1 ; the arc detection plates 24 of the two detection units are arranged opposite to each other and on both sides of the pole body 1 .

[0054] The lifting mechanism includes a fixed sleeve 15 fixedly mounted on the ground, a threaded rod 20 rotatably sleeved in the fixed sleeve 15, a lifting assembly installed inside the fixed sleeve 15, and a driving assembly for driving the threaded rod 20 to rotate;

[0055] The surface of the fixed sleeve 15 is provided with a vertical groove 19 arranged along the length direction of the fixed sleeve 15;

[0056] The lifting assembly includes a threaded sleeve 26 threadedly sleeved with the threaded rod 20, a sliding sleeve 22 is movably sleeved outside the fixed sleeve 15, an extension block 27 is fixedly connected to the outside of the threaded sleeve 26, and the free end of the extension block 27 extends out of the vertical slot 19 and is fixedly connected to the bottom end of the sliding sleeve 22;

[0057] The lifting plate 23 is fixedly connected to the side surface of the sliding sleeve 22 .

[0058] Furthermore, a bottom plate 13 is provided at the bottom end of the fixed sleeve 15, and the top end of the bottom plate 13 is fixedly connected to the side surface of the fixed sleeve 15 through two symmetrically arranged L-shaped support rods 14;

[0059] The top of the bottom plate 13 is also fixedly connected with a mounting plate 16, and a bevel gear 17 is rotatably mounted on the side of the mounting plate 16 close to the fixed sleeve 15. The bottom end of the threaded rod 20 extends out of the fixed sleeve 15 and is fixedly sleeved with a bevel gear 2 18, and the bevel gear 17 and the bevel gear 2 18 are meshed with each other.

[0060] A forward and reverse motor for driving the bevel gear 17 to rotate is installed on one side of the mounting plate 16 away from the fixed sleeve 15.

[0061] Furthermore, an arc-shaped transverse groove 21 is integrally provided at the top of the vertical groove 19 .

[0062] Furthermore, a plurality of barbed rods are fixedly connected to the bottom end of the bottom plate 13, and the barbed rods are buried inside the ground to improve stability.

[0063] Furthermore, the arc-shaped detection plate 24 is arranged between the adjusting clamp 3 and the fixed clamp 2 installed on the top of the adjusting clamp 3. The height of the pole body 1 between the fixed clamp 2 at the top and the adjusting clamp 3 is relatively high. Detection by the detection device 100 can prevent people from climbing.

[0064] The working principle of this embodiment is as follows: when it is necessary to inspect the surface of the pole body 1, the forward and reverse motors are started to drive the bevel gear 17 to rotate. During the rotation of the bevel gear 17, the bevel gear 18 can be driven to rotate. The rotation of the bevel gear 18 can drive the threaded rod 20 to rotate. The rotation of the threaded rod 20 can push the threaded sleeve 26 to move up and down through the thread. The up and down movement of the threaded sleeve 26 can drive the sliding sleeve 22 to move, thereby driving the lifting plate 23 and the arc detection plate 24 to move up and down through the sliding sleeve 22.

[0065] By controlling the synchronous up and down movement of the two arc-shaped detection plates 24, the surface of the pole can be fully inspected, which can avoid the operators from climbing for inspection. In addition, since the steel strands are arranged outside the pole, it will further hinder the inspection of personnel. The setting of the detection device can greatly improve the convenience of maintenance work.

[0066] At the same time, after the extension block 27 moves to the top of the vertical groove 19, due to the setting of the transverse groove 21, the extension block 27 will turn to the transverse groove 21 under the rotation of the threaded rod 20. At this time, the lifting plate 23 also rotates synchronously, so that the arc detection plate 24 can be close to and press the pole body 1. When damage occurs on the surface of the pole body 1, the damaged part can be effectively protected by bringing the two arc detection plates 24 close to and pressing the pole body 1, thereby buying time for subsequent maintenance.

[0067] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Obviously, the described embodiments are only some embodiments of the present invention, not all 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.

Claims

1. A prestressed reinforcement device for a ring-shaped electric pole, comprising an electric pole body (1), characterized in that: Two fixed clamps (2) are installed on the pole body (1) at intervals in the upper and lower parts, and an adjustment clamp (3) fixedly sleeved on the pole body (1) is arranged in the middle between the two fixed clamps (2); The fixed hoop (2) comprises two mutually spliced ​​connecting half hoops (5), both ends of the connecting half hoops (5) are provided with extension plates (6) extending outward, and the extension plates (6) of the two connecting half hoops (5) are locked and connected by a plurality of bolts; a pair of connecting plates (7) are also symmetrically provided on the outer sides of the two connecting half hoops (5); The adjusting hoop (3) comprises two mutually spliced ​​connecting half hoops (9), both ends of which are provided with extension plates (11) extending outwards, and the extension plates (11) of the two connecting half hoops (9) are locked and connected by a plurality of bolts; and a pair of tensioning devices (10) are symmetrically provided on the outer sides of the two connecting half hoops (9); The connecting plates (7) are correspondingly arranged at the top and bottom of each tensioning device (10), and a steel strand (4) is connected between the tensioning device (10) and the connecting plate (7) at the top, and between the tensioning device (10) and the connecting plate (7) at the bottom.

2. The prestressed reinforcement device for an annular pole according to claim 1, characterized in that: Both ends of the connecting half hoop one (5) and both ends of the connecting half hoop two (9) are fixedly provided with step blocks (12), and the two step blocks (12) are overlapped with each other and connected by a plug pin (122).

3. The prestressed reinforcement device for an annular pole according to claim 1, characterized in that: Two symmetrically arranged reinforcing ribs (8) are fixedly connected between the connecting plate (7) and the connecting half hoop (5).

4. The prestressed reinforcement device for an annular pole according to claim 1, characterized in that: The steel strands (4) are provided in eight numbers.

5. The prestressed reinforcement device for an annular pole according to claim 1, characterized in that: A detection device (100) is arranged on the side of the pole body (1), and the detection device (100) comprises two detection units, and the detection unit comprises a lifting mechanism, an arc-shaped detection plate (24), and a detection sensor installed on the arc-shaped detection plate (24); one end of the arc-shaped detection plate (24) is fixedly connected to a lifting plate (23), and the lifting plate (23) is driven by the lifting mechanism and moves up and down along the pole body (1); the arc-shaped detection plates (24) of the two detection units are arranged opposite to each other and are arranged on both sides of the pole body (1).

6. The prestressed reinforcement device for an annular pole according to claim 5, characterized in that: The lifting mechanism comprises a fixed sleeve (15) fixedly mounted on the ground, a threaded rod (20) rotatably sleeved in the fixed sleeve (15), a lifting component mounted inside the fixed sleeve (15), and a driving component for driving the threaded rod (20) to rotate; The surface of the fixed sleeve (15) is provided with a vertical groove (19) arranged along the length direction of the fixed sleeve (15); The lifting assembly comprises a threaded sleeve (26) threadably sleeved with the threaded rod (20); a sliding sleeve (22) is movably sleeved outside the fixed sleeve (15); an extension block (27) is fixedly connected to the outside of the threaded sleeve (26); a free end of the extension block (27) extends out of the vertical slot (19) and is fixedly connected to the bottom end of the sliding sleeve (22); The lifting plate (23) is fixedly connected to the side of the sliding sleeve (22).

7. The prestressed reinforcement device for an annular pole according to claim 6, characterized in that: A bottom plate (13) is provided at the bottom end of the fixed sleeve (15), and the top end of the bottom plate (13) is fixedly connected to the side surface of the fixed sleeve (15) via two symmetrically arranged L-shaped support rods (14); The top of the bottom plate (13) is also fixedly connected to a mounting plate (16), a bevel gear 1 (17) is rotatably mounted on a side of the mounting plate (16) close to the fixed sleeve (15), and a bevel gear 2 (18) is fixedly sleeved on the bottom end of the threaded rod (20) after extending out of the fixed sleeve (15), and the bevel gear 1 (17) and the bevel gear 2 (18) are meshed with each other; A forward and reverse motor for driving bevel gear 1 (17) to rotate is installed on one side of the mounting plate (16) away from the fixed sleeve (15).

8. The prestressed reinforcement device for an annular pole according to claim 7, characterized in that: An arc-shaped transverse groove (21) is integrally provided at the top end of the vertical groove (19).

9. The prestressed reinforcement device for an annular pole according to claim 7, characterized in that: A plurality of barbed rods are fixedly connected to the bottom end of the bottom plate (13), and the barbed rods are buried inside the ground.

10. The prestressed reinforcement device for an annular pole according to claim 5, characterized in that: The arc-shaped detection plate (24) is arranged between the adjusting hoop (3) and the fixed hoop (2) installed at the top of the adjusting hoop (3).

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