A bundled conductor suspension damping fitting capable of preventing conductor whipping fatigue fracture

Abstract

The application discloses a bundled conductor suspension damping fitting for preventing conductor whipping fatigue fracture, and belongs to the technical field of power fittings for overhead bundled conductors in distribution networks. The suspension damping fitting comprises two symmetrical half hoop rings sleeved on a power pole, two bolts are used for fixedly mounting the half hoop rings on the surface of the power pole, and a suspension wire clamp is fixedly installed on the middle part of the outer surface of the half hoop ring. The suspension wire clamp is fixed on the half hoop ring, the half hoop ring can be used for mounting the conductor, the distance between the two isolation heads of the adjustable isolation rod can be adjusted, the adjustable isolation rod can be adapted to conductors with various distances, the on-site assembly deviation of the compensation fitting can be compensated, the high-precision alignment and installation of the compensation fitting are facilitated, two universal pull rod assemblies are arranged between the half hoop ring and the adjustable isolation rod for connection, bilateral suspension synchronous constraint is realized, the swing amplitude of the adjustable isolation rod in a strong wind environment is reduced to a certain extent, the conductor whipping fatigue is effectively avoided, and the conductor whipping abrasion is prevented from the root.

Description

Technical Field

[0001] This invention belongs to the technical field of power fittings for overhead bundled conductors in power distribution networks, and in particular relates to a suspension damping fitting for bundled conductors to prevent conductor whip fatigue fracture. Background Technology

[0002] In the installation of overhead double-split bundled conductors for distribution networks, separate hardware is often used to constrain the spacing between conductor suspension and sub-conductors. The suspension clamps suspend the bundled conductors on both sides, which can achieve conductor load-bearing suspension, but lacks a lateral limiting structure. When the line is subjected to light wind vibration, strong wind galloping, and thermal expansion and contraction, it is difficult for the two split sub-conductors to maintain the same swing phase and amplitude, which can easily lead to mutual whipping and friction. Although the damping spacer can lock the spacing between the double-split conductors and has the effect of damping and vibration reduction, it does not have the load-bearing capacity of the tower itself. The clamps and spacers are arranged independently, which can easily form two independent stress concentration areas on the conductor, exacerbating the risk of conductor fatigue and strand breakage. In addition, the clamps at both ends of the spacer often use a fixed spacing structure, which has poor versatility. When the suspension points on both sides are asymmetrical, the conductors can only be forcibly pulled to align, causing the conductors to be subjected to continuous torsional additional stress, which can easily damage the conductors during construction. Summary of the Invention

[0003] The purpose of this invention is to provide a bundled conductor suspension damping hardware to prevent conductor whip fatigue fracture, thereby solving the aforementioned background technical problems.

[0004] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A bundled conductor suspension damping hardware for preventing conductor whiplash fatigue fracture includes two symmetrical semi-hoops fitted onto a utility pole. The two semi-hoops are fixedly installed on the surface of the utility pole by two bolts. A suspension clamp is fixedly installed in the middle of the outer surface of each semi-hoop. The suspension clamp includes a screw rod welded to the semi-hoops. A hanging clamp is fitted on the surface of the screw rod. An insulating rubber sleeve is detachably installed in the inner cavity of the hanging clamp. A conductor passes through the inner cavity of the insulating rubber sleeve. A conductor rubber sleeve passes through the screw rod. The conductor rubber sleeve is fitted on the surface of the screw rod. One side of the conductor rubber sleeve abuts against the semi-hoops. A nut is threadedly connected to the surface of the screw rod. One side of the nut abuts against the conductor rubber sleeve. An adjustable isolating rod is provided between the two conductors. The adjustable isolating rod includes two symmetrical bases. An isolating head is hinged to the inner cavity of the base through a damping pivot. The isolating head is sleeved on the surface of the conductor. Nuts one and two are welded to opposite sides of the two bases. A bidirectional threaded rod is threadedly connected to the inner cavity of the two nuts one and two. A hexagonal operating head is fixedly connected to the middle surface of the bidirectional threaded rod. A universal tie rod assembly is provided between the base and the semi-hoop ring. The universal tie rod assembly includes a fixed seat welded to one side of the semi-hoop ring and the base. A socket is inserted into the inner cavity of the fixed seat. A ball head block is rotatably connected to the inner cavity of the socket. An inner rod is fixedly connected to one of the ball head blocks, and an outer tube is fixedly connected to the other ball head block. The inner rod is slidably connected to the inner cavity of the outer tube.

[0005] Preferably, a screw cap is embedded in one end of the hanging clamp, and a screw is provided through one side of the hanging clamp. The screw is threadedly connected to the screw cap, and the insulating rubber sleeve and the wire are fixedly installed in the inner cavity of the hanging clamp by the screw cap and the screw.

[0006] Preferably, guide plates are welded to opposite sides of both bases, and guide grooves for sliding of the guide plates are provided on opposite sides of both bases.

[0007] Preferably, a base block is welded to each of the two bases on opposite sides, and a bolt is provided through the base block. An adjustment elongated hole is provided on the guide plate to slide on the surface of the bolt.

[0008] Preferably, the inner rod has multiple locking grooves evenly spaced on its surface, and the outer tube has multiple elastic arc-shaped pieces fixedly connected in a ring array at its end. Three locking blocks are fixedly connected at equal intervals on the inner side of each elastic arc-shaped piece, and the locking blocks are adapted to the locking grooves.

[0009] Preferably, the outer end of the elastic arc-shaped piece is provided with a wedge-shaped surface, the surface of the locking groove is slidably connected with a threaded sleeve, the end of the outer tube surface is provided with an external thread, and the threaded sleeve is threadedly connected to the surface of the outer tube.

[0010] Preferably, the inner side of the threaded sleeve is provided with a second wedge-shaped surface that matches the first wedge-shaped surface.

[0011] Preferably, a bolt three is provided through the surface of the fixing base, the bolt three passes through the fixing base and the socket, and the socket is fixedly installed to the fixing base by the bolt three.

[0012] Preferably, a rubber ring is fixedly installed in the inner cavity of the end of the isolation head, and the wire passes through the inner cavity of the rubber ring.

[0013] Preferably, the base and the isolation head are rotatably assembled via a hinged pin, and the front and rear sides of the isolation head are provided with rubber pads fitted onto the surface of the pin, with the outer side of the rubber pads abutting against the inner wall of the base.

[0014] The beneficial effects of this invention are: This invention allows for the mounting of conductors by fixing the suspension clamp to the semi-hoop ring. The distance between the two isolation heads on the adjustable isolation bar is adjustable, which can accommodate conductors with various spacings, compensate for on-site assembly deviations of the hardware, and facilitate precise alignment and installation at high altitudes. Furthermore, two universal tie rod assemblies are set between the semi-hoop ring and the adjustable isolation bar to achieve synchronous constraint of double-sided suspension. This can reduce the swaying amplitude of the adjustable isolation bar in high wind conditions to a certain extent, effectively avoiding whiplash fatigue of the conductor and preventing whiplash wear of the conductor from the root. Attached Figure Description

[0015] The advantages of the present invention, both above and / or other aspects, will become clearer and more readily understood through the following detailed description taken in conjunction with the accompanying drawings, which are merely illustrative and do not limit the invention, wherein: Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 This is one embodiment of the present invention. Figure 1 A magnified view of point A in the middle; Figure 3 This is a three-dimensional schematic diagram of an adjustable isolation rod according to an embodiment of the present invention; Figure 4 This is a three-dimensional disassembled schematic diagram of an adjustable isolation rod according to an embodiment of the present invention; Figure 5 This is one embodiment of the present invention. Figure 1 A magnified view of point B in the middle; Figure 6 This is a three-dimensional schematic diagram of a universal tie rod assembly according to an embodiment of the present invention; Figure 7 This is a three-dimensional disassembled schematic diagram of a universal tie rod assembly according to an embodiment of the present invention; Figure 8 This is one embodiment of the present invention. Figure 7 A magnified view of point C in the middle.

[0016] In the attached diagram, the components represented by each number are as follows: 1. Half hoop ring, 2. Bolt, 3. Suspension clamp, 31. Screw rod, 32. Hanging clamp, 33. Insulating rubber sleeve, 34. Wire rubber sleeve, 35. Nut one, 36. Screw nut, 37. Screw, 4. Wire, 5. Adjustable isolation rod, 51. Base, 52. Isolation head, 53. Nut one and two, 54. Two-way threaded rod, 55. Hexagonal operating head, 56. Guide plate, 57. Guide groove, 58. Base block, 59. Bolt two, 510. Adjusting elongated hole, 6. Universal tie rod assembly, 61. Fixed seat, 62. Socket, 63. Ball head block, 64. Inner rod, 65. Outer tube, 66. Locking groove, 67. Elastic arc plate, 68. Locking block, 69. Wedge surface one, 610. Threaded sleeve, 611. Wedge surface two, 612. Bolt three. Detailed Implementation

[0017] In the following description, embodiments of the bundled conductor suspension damping fitting for preventing conductor whipping fatigue fracture according to the present invention will be described with reference to the accompanying drawings.

[0018] The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0019] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0020] Example 1: Figure 1-8This invention illustrates an embodiment of a bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture. It includes two symmetrical semi-hoops 1 fitted onto a utility pole, fixed to the pole surface by two bolts 2. A suspension clamp 3 is fixedly installed at the center of the outer surface of each semi-hoop 1. The suspension clamp 3 includes a screw rod 31 welded to the semi-hoops 1. A hanging clamp 32 is fitted onto the surface of the screw rod 31. An insulating rubber sleeve 33 is detachably installed inside the hanging clamp 32. A conductor 4 passes through the inner cavity of the insulating rubber sleeve 33. A conductor rubber sleeve 34 passes through the screw rod 31, fitting over the surface of the screw rod 31. One side of the conductor rubber sleeve 34 abuts against the semi-hoops 1. A nut 35 is threaded onto the surface of the screw rod 31, with one side of the nut 35 abutting against the conductor rubber sleeve 34. A space is provided between the two conductors 4. An adjustable isolating rod 5 is provided. The adjustable isolating rod 5 includes two symmetrical bases 51. The inner cavity of the base 51 is hinged to an isolating head 52 through a damping pivot. The isolating head 52 is sleeved on the surface of the conductor 4. Nuts 1 and 2 53 are welded to opposite sides of the two bases 51. The inner cavities of the two nuts 1 and 2 53 are threadedly connected to a bidirectional threaded rod 54. A hexagonal operating head 55 is fixedly connected to the surface of the middle part of the bidirectional threaded rod 54. A universal tie rod assembly 6 is provided between the base 51 and the half hoop 1. The universal tie rod assembly 6 includes a fixed seat 61 welded to one side of the half hoop 1 and the base 51. A socket 62 is inserted into the inner cavity of the fixed seat 61. A ball head block 63 is rotatably connected to the inner cavity of the socket 62. An inner rod 64 is fixedly connected to one ball head block 63, and an outer tube 65 is fixedly connected to the other ball head block 63. The inner rod 64 is slidably connected to the inner cavity of the outer tube 65.

[0021] Example 2: Refer to Figure 1 and Figure 2 Similar to Embodiment 1, but with the following additional features: a screw cap 36 is embedded in one end of the hanging clamp 32, and a screw 37 is threaded through one side of the hanging clamp 32. The screw 37 is threadedly connected to the screw cap 36. The insulating rubber sleeve 33 and the conductor 4 are fixedly installed in the inner cavity of the hanging clamp 32 by the screw cap 36 and the screw 37. The two half-hoops 1 are fixed to the surface of the utility pole by two bolts 2. Then, the insulating rubber sleeve 33 is put on the surface of the conductor 4 and moved into the inner cavity of the hanging clamp 32. Then, the screw cap 36 and the screw 37 are tightened to firmly fix the insulating rubber sleeve 33 to the surface of the conductor 4. Then, the hanging clamp 32 is lifted so that the conductor rubber sleeve 34 is put on the surface of the screw rod 31. Then, the screw cap 35 is tightened to achieve the insulating suspension of the conductor 4.

[0022] Example 3: Refer to Figure 1 , Figure 3 and Figure 4Similar to Embodiment 1, but with the following additional features: guide plates 56 are welded to opposite sides of both bases 51; guide grooves 57 for sliding of guide plates 56 are provided on opposite sides of both bases 51; base blocks 58 are welded to opposite sides of both bases 51; bolts 59 are threaded through base blocks 58; adjustment elongated holes 510 for sliding on the surface of bolts 59 are provided on guide plates 56; a rubber ring is fixedly installed in the inner cavity of the end of the isolating head 52; the wire 4 passes through the inner cavity of the rubber ring; the bases 51 and the isolating head 52 are rotatably assembled via hinge pins; rubber pads fitted on the surface of the pins are provided on the front and rear sides of the isolating head 52; the outer side of the rubber pads abuts against the inner wall of the base 51; according to the distance between the two wires 4, the hexagonal operating head 55 is rotated, thereby driving the bidirectional threaded rod 54 to rotate; because of the thread, the two nuts 53 will face each other and move away from each other. The movement causes the two bases 51 and the two isolating heads 52 to move towards and away from each other, allowing the spacing between the two isolating heads 52 to be adjusted to accommodate wires 4 with various spacings. During the movement of the bases 51, the guide plate 56 slides in the inner cavity of the guide groove 57, providing guidance for the movement of the bases 51 and improving the stability of the movement of the two bases 51. During the movement of the guide plate 56, the adjusting elongated hole 510 slides on the surface of the bolt 2 59. After the spacing between the two isolating heads 52 is adjusted appropriately, the bolt 2 59 is tightened to fix the guide plate 56 and the base block 58, locking the distance between the two bases 51 and the two isolating heads 52 at this time to prevent random movement. Then, the pin on the isolating head 52 is operated so that the rubber ring in the inner cavity of the isolating head 52 is fitted onto the surface of the wire 4. Then, the pin is inserted to lock it, thus achieving the spacing between the two wires 4.

[0023] Example 4: Refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8Similar to Embodiment 1, but with the following additional features: Multiple locking grooves 66 are evenly spaced on the surface of the inner rod 64; multiple elastic arc-shaped pieces 67 are fixedly connected in a ring array to the end of the outer tube 65; three locking blocks 68 are evenly spaced and fixedly connected to the inner side of the elastic arc-shaped pieces 67, the locking blocks 68 being adapted to the locking grooves 66; a wedge-shaped surface 69 is provided at the outer end of the elastic arc-shaped pieces 67; a threaded sleeve 610 is slidably connected to the surface of the locking grooves 66; external threads are provided at the end of the surface of the outer tube 65; the threaded sleeve 610 is threadedly connected to the surface of the outer tube 65; and the inner side of the threaded sleeve 610 is provided with… A second wedge-shaped surface 611, adapted to the first wedge-shaped surface 69, is provided. A third bolt 612 is provided through the surface of the fixing seat 61. The third bolt 612 passes through the fixing seat 61 and the socket 62. The socket 62 is fixedly installed to the fixing seat 61 by the third bolt 612. The top socket 62 is inserted into the inner cavity of the fixing seat 61 on the half-hoop 1 and then fixedly installed by the third bolt 612. Then, the outer tube 65 is pulled and slid on the surface of the inner rod 64 so that the bottom socket 62 is inserted into the inner cavity of the fixing seat 61 on the base 51. Then, the threaded sleeve 610 on the surface of the inner rod 64 is slid until the threaded sleeve 610 is slid. The rotation of the sleeve 610 on the surface of the outer tube 65, followed by the rotation of the threaded sleeve 610, causes the threaded sleeve 610 to move and rotate towards the surface of the outer tube 65 due to the external threads on the outer tube 65. The wedge-shaped surface 611 on the threaded sleeve 610, in conjunction with the wedge-shaped surface 69, causes multiple elastic arc-shaped pieces 67 to converge towards the center. This causes the locking block 68 on the inner side of the elastic arc-shaped pieces 67 to engage with the inner cavity of the locking groove 66 on the surface of the inner rod 64, thus locking the inner rod 64 and the outer tube 65 in this state. After locking, there is no sliding gap, and under vibration conditions, there will be no loosening or displacement of the adjustable isolation rod 5, maintaining the standard of the two conductors 4 for a long time. The spacing ensures continuous protection against whiplash. The connection and tension between the semi-hoop ring 1 and the universal tie rod assembly 6 prevents vibrations in strong winds and light winds, as well as the expansion and contraction of the conductor 4 due to thermal expansion and contraction. The adjustable isolation rod 5 is bidirectionally limited, significantly reducing the swing amplitude of the two conductors 4 and preventing them from rubbing against each other. This prevents whiplash wear on the conductors from the source. When there are height or left-right asymmetry deviations in the installation points of the adjustable isolation rod 5 and the semi-hoop ring 1, the universal tie rod assembly 6 can freely deflect to adapt to the angle without forcibly pulling or twisting the conductor 4. This avoids the conductor 4 being subjected to continuous torsional additional stress and damage during construction alignment.

[0024] In summary, this bundled conductor suspension damping hardware for preventing whiplash fatigue fracture of conductors can hang conductors 4 by fixing them to the semi-hoop ring 1 with the suspension clamp 3. The spacing between the two isolation heads 52 on the adjustable isolation rod 5 is adjustable, which can accommodate conductors with various spacings, compensate for on-site assembly deviations of the hardware, and facilitate precise high-altitude alignment and installation. Furthermore, two universal tie rod assemblies 6 are set between the semi-hoop ring 1 and the adjustable isolation rod 5 to achieve synchronous constraint of double-sided suspension, which can reduce the swing amplitude of the adjustable isolation rod 5 in high wind conditions to a certain extent, effectively avoid whiplash fatigue of conductors, and prevent whiplash wear of conductors from the root.

[0025] The technical features disclosed above are not limited to the combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture, characterized in that, The system includes two symmetrical semi-hoops (1) fitted onto the utility pole. The two semi-hoops (1) are fixedly mounted on the surface of the utility pole by two bolts (2). A hanging clamp (3) is fixedly installed in the middle of the outer surface of each semi-hoop (1). The hanging clamp (3) includes a screw rod (31) welded to the semi-hoops (1). A hanging clip (32) is fitted onto the surface of the screw rod (31). An insulating rubber sleeve (33) is detachably installed inside the hanging clip (32). A wire (4) is inserted through the inner cavity of the screw rod (31), and a wire rubber sleeve (34) is inserted through the screw rod (31). The wire rubber sleeve (34) is fitted on the surface of the screw rod (31), and one side of the wire rubber sleeve (34) abuts against the half-hoop ring (1). A nut (35) is threadedly connected to the surface of the screw rod (31), and one side of the nut (35) abuts against the wire rubber sleeve (34). An adjustable isolation rod (5) is provided between the two wires (4). The device includes two symmetrical bases (51), with an isolation head (52) hinged to the inner cavity of each base (51) via a damping pivot. The isolation head (52) is fitted onto the surface of the conductor (4). Nuts 1 and 2 (53) are welded to opposite sides of each of the two bases (51). A bidirectional threaded rod (54) is threaded into the inner cavity of each of the two nuts 1 and 2 (53). A hexagonal operating head (55) is fixedly connected to the surface of the middle part of the bidirectional threaded rod (54). A space is provided between the base (51) and the half-hoop ring (1). There is a universal tie rod assembly (6), which includes a fixed seat (61) welded to one side of the semi-hoop ring (1) and the base (51). A socket (62) is inserted into the inner cavity of the fixed seat (61). A ball head block (63) is rotatably connected to the inner cavity of the socket (62). An inner rod (64) is fixedly connected to one of the ball head blocks (63), and an outer tube (65) is fixedly connected to the other ball head block (63). The inner rod (64) is slidably connected to the inner cavity of the outer tube (65).

2. The bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 1, characterized in that, A screw cap (36) is embedded in one end of the hanging clamp (32), and a screw (37) is provided through one side of the hanging clamp (32). The screw (37) is threadedly connected to the screw cap (36), and the insulating rubber sleeve (33) and the wire (4) are fixedly installed in the inner cavity of the hanging clamp (32) by the screw cap (36) and the screw (37).

3. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 1, characterized in that, Guide plates (56) are welded to the opposite sides of the two bases (51), and guide grooves (57) for sliding of the guide plates (56) are opened on the opposite sides of the two bases (51).

4. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 3, characterized in that, Each of the two bases (51) has a base block (58) welded to one side of the opposite side. A bolt (59) is provided through the base block (58). An adjustment elongated hole (510) is provided on the guide plate (56) for sliding on the surface of the bolt (59).

5. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 1, characterized in that, The inner rod (64) has multiple locking grooves (66) evenly spaced on its surface. The outer tube (65) has multiple elastic arc-shaped pieces (67) fixedly connected in a ring array at its end. The inner side of the elastic arc-shaped pieces (67) has three locking blocks (68) fixedly connected at equal intervals. The locking blocks (68) are adapted to the locking grooves (66).

6. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 5, characterized in that, The outer end of the elastic arc plate (67) is provided with a wedge-shaped surface (69), the surface of the locking groove (66) is slidably connected with a threaded sleeve (610), the end of the surface of the outer tube (65) is provided with an external thread, and the threaded sleeve (610) is threadedly connected to the surface of the outer tube (65).

7. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 6, characterized in that, The inner side of the threaded sleeve (610) is provided with a wedge-shaped surface two (611) that is adapted to the wedge-shaped surface one (69).

8. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 1, characterized in that, A bolt three (612) is provided through the surface of the fixing seat (61). The bolt three (612) passes through the fixing seat (61) and the socket (62). The socket (62) is fixedly installed to the fixing seat (61) by the bolt three (612).

9. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 1, characterized in that, A rubber ring is fixedly installed in the inner cavity of the end of the isolation head (52), and the wire (4) passes through the inner cavity of the rubber ring.

10. A bundled conductor suspension damping fitting for preventing conductor whiplash fatigue fracture according to claim 1, characterized in that, The base (51) and the isolation head (52) are rotatably assembled by a hinge pin. The front and rear sides of the isolation head (52) are equipped with rubber pads that are fitted on the surface of the pin, and the outer side of the rubber pads abuts against the inner wall of the base (51).

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