A broadband anti-dance spacer

Abstract

The present invention proposes a broadband anti-dancing spacer, wherein the broadband anti-dancing spacer comprises: a plurality of frames (1), a plurality of wire clamps, a plurality of frame damping joints (2) and a plurality of wire clamp damping joints (3). The frame of each supporting wire clamp forms two supporting points with two adjacent frames through the frame damping joints, so as to ensure that the broadband anti-dancing spacer has the same anti-vibration effect as a conventional spacer when vibrating in a breeze; when the conductor oscillates or dances in a sub-span, the two frame damping joints are elastically deformed under the action of force, and work together with the wire clamp damping joints at the wire clamps. Under the action of these damping joints, the anti-vibration frequency of the broadband anti-dancing spacer is widened, so as to better adapt to the vibration of the line, consume the kinetic energy transmitted to the conductor by the wind, and do not need to carry unnecessary weight, thus avoiding damage to components.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line protection, and in particular to a broadband anti-dancing spacer rod. Background Art

[0002] Transmission line galloping refers to the low-frequency, large-amplitude vibration phenomenon caused by wind under certain climatic conditions. The amplitude of the conductor galloping can reach more than ten meters, which is extremely destructive to the transmission line, involving conductors, hardware, insulators, towers and other aspects, such as tripping, broken wires, severe deformation and fracture of hardware, damage and fracture of insulators, twisting and collapse of towers, etc., which seriously endanger the safe operation of transmission lines.

[0003] In the anti-dancing management of transmission lines, there are many structural forms, such as adding anti-dancing weights on the spacer bars, adding phase spacer bars, etc. For example, Chinese patent CN201829895U discloses a four-split detuned pendulum anti-dancing damping spacer bar, with two asymmetric anti-dancing and anti-vibration detuned pendulums at the bottom. The detuned pendulum includes a pendulum, a steel strand and a connecting plate. However, these structures are installed in the line, which changes the role of the spacer bars in suppressing the breeze vibration of the conductors in the line, and generates new nodes at the installation position of the conductors. The spacer bars carry unnecessary weight during operation, causing damage to the spacer bar components, which will still cause secondary faults to the safe operation of the transmission line. Summary of the invention

[0004] In view of this, the present invention proposes a broadband anti-dancing spacer to solve the problem that the existing spacers are loaded with unnecessary weight during operation, causing damage to the spacer components and still causing secondary faults to the safe operation of the transmission line.

[0005] The technical solution of the present invention is implemented as follows: The present invention provides a broadband anti-dance spacer, wherein the broadband anti-dance spacer comprises:

[0006] A plurality of frames, a plurality of wire clamps, a plurality of frame damping joints and a plurality of wire clamp damping joints;

[0007] A plurality of the frames are adjacent to each other, and two adjacent frames are connected through a frame damping joint to form a frame body;

[0008] Each of the wire clips is located at one end of each of the frames away from the center of the frame body, and each of the wire clips is connected to the frame via a wire clip damping joint.

[0009] On the basis of the above technical solution, preferably, the frame damping joint comprises a first bolt, a first nut, a frame damping rubber block and two frame glands;

[0010] The two adjacent frames are buckled and connected, and a through hole is provided at the buckling position, and the frame damping rubber block is filled in the through hole;

[0011] The first bolt sequentially passes through one of the frame glands, the frame damping rubber block, and another frame gland and is fastened to the first nut.

[0012] On the basis of the above technical solution, preferably, the frame damping rubber block is in the shape of an elliptical cylinder, and a flange is formed outwardly in the radial direction in the middle of the axis.

[0013] On the basis of the above technical solution, preferably, the frame damping joint further includes a support shaft;

[0014] The supporting shaft sleeve is arranged between the first bolt and the frame damping rubber block.

[0015] On the basis of the above technical solution, preferably, the frame damping joint further includes two first flat washers and one first spring washer;

[0016] One of the first flat washers is sleeved between the first bolt head and one of the frame glands, and another of the first flat washers and one of the first spring washers are sequentially sleeved between another frame gland and the first nut.

[0017] On the basis of the above technical solution, preferably, the wire clamp comprises a wire clamp body, a wire clamp clamp head and a rubber tile;

[0018] One end of the wire clamp body close to the frame is connected to the frame through a wire clamp damping joint;

[0019] The rubber tile is in the shape of a circular hole, embedded in the end of the wire clamp body away from the frame, and the diameter of the circular hole is adapted to the wire;

[0020] The wire clamp clamp head clamps the rubber tile in the wire clamp body. The wire clamp clamp head is hingedly connected to the wire clamp body at one end away from the frame and is locked by a locking pin.

[0021] On the basis of the above technical solution, preferably, the wire clamp damping joint comprises a second bolt, a second nut, a wire clamp damping rubber block and two wire clamp glands;

[0022] A wire clamp installation groove is formed at one end of the frame away from the center of the frame body, and an end of the wire clamp close to the center of the frame body is located in the wire clamp installation groove and is provided with a through hole, and the wire clamp damping rubber block is filled in the through hole;

[0023] The second bolt passes through one of the wire clamp glands, the wire clamp damping rubber block, another wire clamp gland and is fastened with the second nut in sequence, so as to connect the wire clamp and the frame.

[0024] On the basis of the above technical solution, preferably, limiting bosses are provided at both ends of the inner side of the wire clamp installation groove, and a protrusion cooperating with the limiting boss is provided at one end of the wire clamp close to the center of the frame body.

[0025] On the basis of the above technical solution, preferably, the wire clamp damping joint further includes two second flat washers and one second spring washer;

[0026] One of the second flat washers is sleeved between the second bolt head and one of the wire clamp glands, and another of the second flat washers and one of the second spring washers are sequentially sleeved between another of the wire clamp glands and the second nut.

[0027] On the basis of the above technical solution, preferably, the frame is a single-plate or double-plate structure.

[0028] The broadband anti-dance spacer of the present invention has the following beneficial effects compared with the prior art:

[0029] (1) The frame of each supporting wire clamp and the two adjacent frames form two supporting points through the frame damping joints to ensure that the broadband anti-dancing spacer is in the same anti-vibration effect as the conventional spacer when vibrating in the breeze; when the conductor oscillates or dances in the sub-span, the two frame damping joints are elastically deformed under the action of force and work together with the wire clamp damping joints at the wire clamp. Under the action of these damping joints, the anti-vibration frequency of the broadband anti-dancing spacer is widened, which better adapts to the vibration of the line and consumes the kinetic energy transmitted to the conductor by the wind, without the need to carry unnecessary weight, thus avoiding damage to components;

[0030] (2) The buckling parts of two adjacent frames do not form direct contact through the flange of the frame damping rubber block, so that when they rotate relative to each other, the frame damping rubber block can better play a vibration-absorbing role, and since there is no direct contact between the frames, the frame wear caused by rotational friction is also reduced;

[0031] (3) When the wind force is so strong that the rubber tile alone cannot absorb vibration, the wire clamp and the wire clamp damping joint will rotate relative to each other. Under the action of the force, the wire clamp damping rubber block of the wire clamp damping joint will undergo elastic deformation, further absorbing vibration and reducing the occurrence of dancing.

[0032] (4) The rotation angle of the wire clamp can be limited by the limiting cooperation between the limiting boss and the protrusion. When the wind force is so strong that the protrusion contacts the limiting boss, it indicates that the wire clamp damping joint alone cannot eliminate vibration. At this time, the rotation of the wire clamp will further drive the relative rotation between the frames. The frame damping rubber block of the frame damping joint will undergo elastic deformation under the action of force, further eliminating vibration and reducing the occurrence of dancing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a front view of the broadband anti-dance spacer bar of the present invention;

[0035] Figure 2 It is a side cross-sectional view of the connection of the broadband anti-dance spacer bar frame damping joint of the present invention;

[0036] Figure 3 It is a side sectional view of the connection of the broadband anti-dancing spacer rod wire clamp damping joint of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with 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.

[0038] Embodiment 1

[0039] like Figure 1 As shown, a broadband anti-dance spacer bar of the present invention, wherein the broadband anti-dance spacer bar comprises:

[0040] A plurality of frames 1, a plurality of wire clamps, a plurality of frame damping joints 2 and a plurality of wire clamp damping joints 3;

[0041] A plurality of the frames 1 are adjacent to each other, and two adjacent frames 1 are connected via a frame damping joint 2 to form a frame body;

[0042] Each of the wire clamps is located at one end of each of the frames 1 away from the center of the frame body, and each of the wire clamps is connected to the frame 1 via a wire clamp damping joint 3 .

[0043] In this broadband anti-dance spacer, each frame supporting the wire clamp and the two adjacent frames form two supporting points through the frame damping joints, ensuring that the broadband anti-dance spacer is in an anti-vibration effect similar to that of a conventional spacer when vibrating in a breeze; when the conductor undergoes sub-span oscillation or dancing, the two frame damping joints are elastically deformed under the action of force, and work together with the wire clamp damping joints at the wire clamp. Under the action of these damping joints, the vibration-proof frequency of the broadband anti-dance spacer is widened to better adapt to the vibration of the line and consume the kinetic energy transmitted to the conductor by the wind. At the same time, under the action of the damping force, the windward side and the leeward side of the conductor change the motion trajectory between the conductors, so that the windward side and the leeward side conductors move in opposite directions. Through the movement of the two conductors in different directions, mutual vibration cancellation is achieved, thereby reducing the occurrence of dancing.

[0044] Among them, Figure 2 As shown, the frame damping joint 2 includes a first bolt 4, a first nut 5, a frame damping rubber block 6 and two frame glands 7;

[0045] The two adjacent frames 1 are buckled and connected, and there is a through hole at the buckling position, and the frame damping rubber block 6 is filled in the through hole;

[0046] The first bolt 4 sequentially passes through one of the frame glands 7 , the frame damping rubber block 6 , and another frame gland 7 and is fastened to the first nut 5 .

[0047] The two adjacent frames are snap-fitted so that the frames can rotate relative to each other, and the through holes at the snap-fitting parts are filled with frame damping rubber blocks, so that when the broadband anti-dancing spacer vibrates in a breeze, due to the action of the frame damping rubber blocks, there is no relative rotation between the frames, and the anti-vibration effect is the same as that of conventional spacers. When the wind force is so strong that the wire clamp damping joint cannot eliminate vibration, relative rotation will occur between the frames, and the frame damping joint will undergo elastic deformation under the action of force, further eliminating vibration and reducing the occurrence of dancing. The inner diameter of the two frame pressure covers should be larger than the outer diameter of the through holes, so that the frame pressure covers, in conjunction with the bolt structure, can well fasten the two adjacent frames.

[0048] The frame damping rubber block 6 is in the shape of an elliptical cylinder, and a flange is formed outwardly in the radial direction in the middle of the axis.

[0049] The buckling parts of two adjacent frames do not form direct contact through the flange of the frame damping rubber block, so that when they rotate relative to each other, the frame damping rubber block can better play a vibration-absorbing role. In addition, since there is no direct contact between the frames, the frame wear caused by rotational friction is also reduced.

[0050] Wherein, the frame damping joint 2 further includes a support shaft 8;

[0051] The support shaft 8 is sleeved between the first bolt 4 and the frame damping rubber block 6 .

[0052] The support shaft is a hollow tube, which is sleeved between the first bolt and the frame damping rubber block and clamped by two frame glands to protect the bolt and strengthen the supporting effect of the buckle.

[0053] Wherein, the frame damping joint 2 further includes two first flat washers 9 and a first spring washer 10;

[0054] One of the first flat washers 9 is sleeved between the head of the first bolt 4 and one of the frame glands 7 , and another of the first flat washers 9 and one of the first spring washers 10 are sequentially sleeved between another frame gland 7 and the first nut 5 .

[0055] Due to the material and process limitations of threaded fasteners, the bearing surface of fasteners such as bolts is not large. Therefore, in order to reduce the compressive stress on the bearing surface and protect the surface of the connected parts, flat washers are used; spring washers are installed under the nuts to prevent the nuts from loosening.

[0056] The wire clamp comprises a wire clamp body 11, a wire clamp head 12 and a rubber tile 13;

[0057] One end of the wire clamp body 11 close to the frame 1 is connected to the frame 1 through a wire clamp damping joint 3;

[0058] The rubber tile 13 is in the shape of a circular hole, and is embedded in the end of the wire clamp body 11 away from the frame 1, and the diameter of the circular hole is adapted to the wire;

[0059] The wire clamp chuck 12 clamps the rubber tile 13 in the wire clamp body 11 . The wire clamp chuck 12 is hingedly connected to the wire clamp body 11 at one end away from the frame 1 and is locked by a locking pin.

[0060] The wire clamp clamps the wire through the rubber tile. Due to the damping effect of the rubber tile itself, the wire can be prevented from dancing under extremely small wind disturbances.

[0061] Among them, Figure 3 As shown, the wire clamp damping joint 3 includes a second bolt 14, a second nut 15, a wire clamp damping rubber block 16 and two wire clamp glands 17;

[0062] The frame 1 is formed with a wire clamp installation groove 18 at one end away from the center of the frame body, and the wire clamp is located in the wire clamp installation groove 18 at one end close to the center of the frame body and is provided with a through hole, and the wire clamp damping rubber block 16 is filled in the through hole;

[0063] The second bolt 14 passes through one of the wire clamp glands 17 , the wire clamp damping rubber block 16 , another wire clamp gland 17 and is fastened with the second nut 15 in sequence, so as to connect the wire clamp and the frame 1 .

[0064] The wire clamp damping joint is fastened to the frame through two wire clamp pressure covers. Since a wire clamp damping rubber block is sleeved between the wire clamp and the bolt, the wire clamp can rotate around the wire clamp damping joint. When the wind force is so strong that the rubber tile alone cannot eliminate vibration, the wire clamp and the wire clamp damping joint will rotate relative to each other. The wire clamp damping rubber block of the wire clamp damping joint will undergo elastic deformation under the action of force, further eliminating vibration and reducing the occurrence of dancing. The inner diameter of the two wire clamp pressure covers should be larger than the outer diameter of the wire clamp mounting groove, so that the wire clamp pressure cover cooperates with the bolt structure to well connect the wire clamp and the frame.

[0065] Wherein, limiting bosses 19 are arranged at both ends of the inner side of the wire clamp installation groove 18 , and a protrusion 20 cooperating with the limiting boss 19 is arranged at one end of the wire clamp close to the center of the frame body.

[0066] The rotation angle of the wire clamp can be limited by the limiting cooperation between the limiting boss and the protrusion. When the wind force is strong enough to make the protrusion contact with the limiting boss, it indicates that the wire clamp damping joint alone cannot eliminate vibration. At this time, the rotation of the wire clamp will further drive the relative rotation between the frames. The frame damping rubber block of the frame damping joint will undergo elastic deformation under the action of force, further eliminate vibration and reduce the occurrence of dancing.

[0067] Wherein, the wire clamp damping joint 3 further includes two second flat washers 21 and a second spring washer 22;

[0068] One of the second flat washers 21 is sleeved between the head of the second bolt 14 and one of the wire clamp glands 17 , and another of the second flat washers 21 and one of the second spring washers 22 are sequentially sleeved between another wire clamp gland 17 and the second nut 15 .

[0069] Due to the material and process limitations of threaded fasteners, the bearing surface of fasteners such as bolts is not large. Therefore, in order to reduce the compressive stress on the bearing surface and protect the surface of the connected parts, flat washers are used; spring washers are installed under the nuts to prevent the nuts from loosening.

[0070] Wherein, the frame 1 is a single-plate or double-plate structure.

[0071] It adopts a double-plate structure, with the upper frame plate and the lower frame plate buckled together to form a frame, which can better play a supporting role and facilitate installation and assembly using the upper and lower structures.

[0072] The working principle of this broadband anti-dance interval rod is as follows:

[0073] Several frames can be made into two-split, three-split, four-split, six-split, eight-split and other structural forms according to the design requirements of the line. The wires are clamped by wire clamps through rubber tiles. When the wind force is small, the damping effect of the rubber tiles themselves can prevent the wires from dancing under extremely small wind disturbances; when the wind force is so large that the rubber tiles alone cannot eliminate vibrations, the wires will drive the wire clamps to dance, causing the wire clamps and the wire clamp damping joints to rotate relative to each other. The wire clamp damping rubber block of the wire clamp damping joint undergoes elastic deformation under the action of force, further eliminates vibrations and reduces the occurrence of dancing; when the wind force is further large enough to cause the wire clamp to rotate until the protrusion contacts the frame limit boss, it indicates that the wire clamp damping joint alone cannot eliminate vibrations. At this time, the rotation of the wire clamp will further drive relative rotation between the frames. The frame damping rubber block of the frame damping joint undergoes elastic deformation under the action of force, further eliminates vibrations and reduces the occurrence of dancing.

[0074] The broadband anti-dancing spacer in this embodiment widens the vibration frequency range of the spacer, and can better adapt to the dancing frequency of the conductor when the conductor dances. By changing the vibration angle of each sub-conductor in the multi-split conductor, the adjacent and opposite conductors produce asynchronous vibrations, which consume each other's vibration energy, thereby reducing the conductor amplitude to a safe range and avoiding the occurrence of conductor dancing in the power transmission line. At the same time, when the line is operating normally, the broadband anti-dancing spacer has the same functions as ordinary spacers in avoiding whipping of sub-conductors, resisting breeze vibration of conductors, and avoiding sub-span oscillation, and its anti-vibration performance is better than that of existing spacers.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A broadband anti-dance spacer, characterized in that: The broadband anti-dance spacer comprises: A plurality of frames (1), a plurality of wire clamps, a plurality of frame damping joints (2) and a plurality of wire clamp damping joints (3); A plurality of the frames (1) are adjacent to each other, and two adjacent frames (1) are connected via a frame damping joint (2) to form a frame body; The frame damping joint (2) comprises a frame damping rubber block (6); two adjacent frames (1) are buckled and connected, and a through hole is provided at the buckling position, and the frame damping rubber block (6) is filled in the through hole; the frame damping rubber block (6) is in the shape of an elliptical cylinder, and a flange is formed outwardly in the radial direction at the middle of the axis; Each of the wire clamps is located at an end of each of the frames (1) away from the center of the frame body, and each of the wire clamps is connected to the frame (1) via a wire clamp damping joint (3).

2. The broadband anti-dance spacer as claimed in claim 1, characterized in that: The frame damping joint (2) comprises a first bolt (4), a first nut (5) and two frame glands (7); The first bolt (4) sequentially passes through one of the frame glands (7), the frame damping rubber block (6), and another frame gland (7) to be fastened to the first nut (5).

3. The broadband anti-dance spacer as claimed in claim 2, characterized in that: The frame damping joint (2) further comprises a support shaft (8); The support shaft (8) is sleeved between the first bolt (4) and the frame damping rubber block (6).

4. The broadband anti-dance spacer as claimed in claim 2, characterized in that: The frame damping joint (2) also includes two first flat washers (9) and a first spring washer (10); One of the first flat washers (9) is sleeved between the head of the first bolt (4) and one of the frame glands (7), and another of the first flat washers (9) and one of the first spring washers (10) are sequentially sleeved between another frame gland (7) and the first nut (5).

5. The broadband anti-dance spacer as claimed in claim 1, characterized in that: The wire clamp comprises a wire clamp body (11), a wire clamp clamp head (12) and a rubber tile (13); One end of the wire clamp body (11) close to the frame (1) is connected to the frame (1) via a wire clamp damping joint (3); The rubber tile (13) is in the shape of a circular hole and is embedded in one end of the wire clamp body (11) away from the frame (1), and the diameter of the circular hole is adapted to the wire; The wire clamp clamp head (12) clamps the rubber tile (13) in the wire clamp body (11); the wire clamp clamp head (12) is hingedly connected to the wire clamp body (11) at one end away from the frame (1) and is locked by a locking pin.

6. The broadband anti-dance spacer as claimed in claim 1, characterized in that: The wire clamp damping joint (3) comprises a second bolt (14), a second nut (15), a wire clamp damping rubber block (16) and two wire clamp glands (17); The frame (1) is formed with a wire clamp installation groove (18) at one end away from the center of the frame body, and the wire clamp is located in the wire clamp installation groove (18) at one end close to the center of the frame body and is provided with a through hole, and the wire clamp damping rubber block (16) is filled in the through hole; The second bolt (14) passes through one of the wire clamp glands (17), the wire clamp damping rubber block (16), another wire clamp gland (17) and is fastened with the second nut (15) in sequence, so as to connect the wire clamp and the frame (1).

7. The broadband anti-dance spacer as claimed in claim 6, characterized in that: Limiting bosses (19) are arranged at both ends of the inner side of the wire clamp installation groove (18), and a protrusion (20) cooperating with the limiting boss (19) is arranged at one end of the wire clamp close to the center of the frame body.

8. The broadband anti-dance spacer as claimed in claim 6, characterized in that: The wire clamp damping joint (3) further comprises two second flat washers (21) and a second spring washer (22); One of the second flat washers (21) is sleeved between the head of the second bolt (14) and one of the wire clamp glands (17), and another of the second flat washers (21) and one of the second spring washers (22) are sequentially sleeved between another of the wire clamp glands (17) and the second nut (15).

9. The broadband anti-dance spacer as claimed in claim 1, characterized in that: The frame (1) is a single-plate or double-plate structure.

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