Single-split-conductor tension backup complete set of devices

Abstract

The present invention relates to a complete set of single-split conductor tension backup devices, which is composed of a backup tension device, an extension rod, a protective wire strip, a support wire clamp, a guy wire device, a U-shaped ring, a tensioning device, a parallel hanging plate, and a connecting plate; due to the provision of a wedge-shaped backup tension device, the gripping force on the conductor is large and the installation is convenient, and it will become tighter and tighter during use; due to the outer surface of the backup tension device being designed in an arc structure form, stress concentration is effectively prevented and the structure is reliable; due to the provision of an extension rod, a rigid connection corner is formed between the backup tension hanging plate and the guy wire device, making the connection of the entire device more reliable; due to the use of a support wire clamp, the galloping between the complete set of backup devices and the conductor is avoided, greatly extending the service life of the conductor; due to the entire set of devices being able to share the tension of the original compression type tension, the service life of the original compression tension is increased; due to the reasonable structure, it has great practical and promotional value.

Description

Technical Field

[0001] The present invention relates to a safety protection device for power transmission and distribution lines in the power industry, specifically a complete set of single-split conductor tension backup devices. Background Art

[0002] After searching relevant patent documents, no complete set of single-split conductor tension backup devices with the same structure as the present invention has been found yet. Currently, compression-type tension clamps are generally used for the conductors of transmission lines. However, during the actual construction process, affected by construction conditions and the skills of construction workers, it is difficult to control the quality of the crimped conductors, and it is also impossible to monitor them through monitoring means on-site. But as the application time lengthens, the occurrence of fractures at the crimped parts of the clamps is likely to cause major electric shock accidents. The existing method for preventing conductor fractures is to wind preformed strands at the connection parts, which increases the weight of the line and poses a hazard to the tower. Therefore, it is necessary to design a set of backup devices that can ensure the safe and reliable operation of the power grid after the failure of the compression-type tension, prevent the conductor from falling, and win valuable time for emergency repairs to meet the development needs of modern power grids. Summary of the Invention

[0003] The purpose of the present invention is to provide a complete set of single-split conductor tension backup devices that can effectively hold the conductor, prevent the conductor from falling, share the tension of the original tension clamp, and improve the service life of the original tension clamp in the case of fracture of the conductor crimping part of the original compression-type tension clamp without changing the original line structure.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The complete set of single-split conductor tension backup devices consists of a backup tension device, an extension rod, a guard wire, a support clamp, a guying device, a U-shaped ring, a tensioning device, a parallel hanger, and a connecting plate. One end of the extension rod is connected to the hanger of the backup tension device, and the other end is connected to one end of the guying device through a U-shaped ring; the other end of the guying device is connected to one end of the tensioning device through a U-shaped ring; the other end of the tensioning device is connected to the connecting plate through a parallel hanger; on the surfaces of the connection parts between the backup tension device and the conductor, the connection parts between the support clamp and the conductor, and the connection parts between the guying device and the support clamp, guard wires are wrapped; the backup tension device is a wedge-shaped tension clamp; the guard wires are preformed strands; the support clamp is used to separate the conductor from the complete backup device to avoid galloping between the conductor and the complete backup device; the connecting plate is a fan-shaped connecting plate body.

[0006] The described backup strain device consists of a housing, inner wedges, and a hanging plate. One end of the inner wedge is set inside the housing, and on the other end, connecting ear plates are symmetrically provided on both side faces. On both sides of the housing, trunnions connected to the hanging plate are symmetrically provided. The hanging plate is set on the trunnions and is limited by an opening pin and can rotate around the trunnions. The housing is composed of two identical wedge-shaped groove-type structures fastened by bolts, forming a wedge-shaped cavity inside the housing that matches the inner wedge. The inner wedge is composed of two symmetric wedge-shaped bodies, and a wire groove that matches the external shape of the wire is formed between the joint surfaces. The outer surface of the housing and the outside of the inner wedge are designed as arc-shaped surfaces, effectively preventing stress concentration and tip discharge phenomena.

[0007] The described support clamp consists of two symmetric metal plates provided with semi-circular guy wire grooves, semi-circular wire grooves, and two clamping bolt connection holes.

[0008] The described guy wire device consists of a steel strand and a steel anchor. Steel anchors are crimped at both ends of the steel strand.

[0009] The described tensioning device consists of a body, a threaded tie rod, a pin shaft, and a split pin. The body is a rectangular metal frame, and threaded holes matching the threaded tie rod are provided on two symmetric sides. One end of the threaded tie rod is a circular ring connection buckle, and a pin shaft hole is perpendicularly opened at the other end along the axis. The pin shaft is installed in the pin shaft hole at the end of the threaded tie rod and is locked by a split pin.

[0010] During use, a protective wire strip is wrapped around the wire in front of the outlet of the original compression type strain. Then, the backup strain is installed on the wire wrapped with the protective wire strip. Next, protective wire strips are wrapped around the wires at the positions where the support clamps need to be installed. The extension tie rod is connected to the hanging plate on the backup strain device and is supported by the support clamp to ensure that the hanging plate does not contact the wire. A guy wire device with a suitable length is selected, and the backup strain device, extension tie rod, guy wire device, and tensioning device are connected in series with the connecting plate installed on the pole tower by using U-shaped rings and parallel hanging plates. The support clamp is used to effectively separate the guy wire device from the wire. At the same time, a protective wire strip is wrapped around the support clamp part installed on the guy wire device. Finally, the tensioning device is adjusted so that the entire backup device is stressed. In this way, it can share the tension of the original compression type strain, improve the service life of the original compression type strain. At the same time, when the crimping part of the original compression type strain breaks, the strain backup complete set device of the present invention can effectively hold the wire and effectively avoid the phenomenon of the wire breaking and falling, winning precious time for emergency repair.

[0011] The advantages of the present invention are as follows: Due to the provision of the wedge backup strain device, the holding force on the conductor is large, and the installation is convenient. During use, it will become tighter as it is pulled; since the outer surface of the backup strain device is designed in an arc structure form, stress concentration is effectively prevented and the structure is reliable; due to the provision of the extension pull rod, a rigid connection corner is formed between the backup strain hanger and the guy wire device, making the connection of the entire device more reliable; since the protective wire is a preformed wire, the outer surface of the conductor is effectively protected and the installation is convenient; due to the use of the support clamp, the galloping between the complete set of backup devices and the conductor is avoided, greatly extending the service life of the conductor; due to the provision of the tensioning device, the tension can be adjusted conveniently; since the entire set of devices can share the tension of the original compression type strain, the service life of the original compression strain is increased; due to the reasonable structure and convenient use, it has great practical and promotional value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the drawings:

[0013] FIG Figure 1 is a schematic structural diagram of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0014] FIG Figure 2 is a schematic structural diagram of the backup strain device of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0015] FIG Figure 3 is a schematic structural diagram of the extension pull rod of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0016] FIG Figure 4 is a schematic structural diagram of the support clamp of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0017] FIG Figure 5 is a schematic structural diagram of the guy wire device of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0018] FIG Figure 6 is a schematic structural diagram of the U-shaped ring of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0019] FIG Figure 7 is a schematic structural diagram of the tensioning device of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0020] FIG Figure 8 is a schematic structural diagram of the parallel hanger of the single-conductor split conductor strain backup complete set of devices of the present invention;

[0021] FIG Figure 9 is a schematic structural diagram of the connecting plate of the single-conductor split conductor strain backup complete set of devices of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] Refer to the attached Figure 1 、attachment Figure 2 、attachment Figure 3 、attachment Figure 4 、attachment Figure 5 、attachment Figure 6 、attachment Figure 7 、attachment Figure 8 、attachment Figure 9 , the single-split conductor tension backup complete set device of the present invention is composed of a backup tension device 1, an extension pull rod 2, a guard wire 3, a support clamp 4, a guy wire device 5, a U-shaped ring 6, a tensioning device 7, a parallel hanging plate 8, and a connecting plate 9. One end of the extension pull rod 2 is connected to the hanging plate 13 of the backup tension device 1, and the other end is connected to one end of the guy wire device 5 through the U-shaped ring 6; the other end of the guy wire device 5 is connected to one end of the tensioning device 7 through the U-shaped ring 6; the other end of the tensioning device 7 is connected to the connecting plate 9 through the parallel hanging plate 8; on the surfaces of the connection part between the backup tension device 1 and the conductor, the connection part between the support clamp 4 and the conductor, and the connection part between the guy wire device 5 and the support clamp 4, the guard wire 3 is wrapped; the backup tension device 1 is a wedge-shaped tension clamp; the guard wire 3 is a preformed wire; the support clamp 4 is used to separate the conductor from the backup complete set device to avoid the dancing between the conductor and the backup complete set device; the connecting plate 9 is a fan-shaped connecting plate body; the backup tension device 1 is composed of a housing 11, an inner wedge block 12, and a hanging plate 13. One end of the inner wedge block 12 is arranged inside the housing 11, and connecting ear plates are symmetrically arranged on both sides of the other end; on both sides of the housing 11, ear shafts connected to the hanging plate 13 are symmetrically arranged; the hanging plate 13 is arranged on the ear shaft and is limited by an opening pin and can rotate around the ear shaft; the housing 11 is composed of two identical wedge-shaped groove-type structures fastened by bolts, and a wedge-shaped cavity matching the inner wedge block 12 is formed inside the shell; the inner wedge block 12 is composed of two symmetric wedge bodies, and a wire groove matching the external shape of the conductor is formed between the joint surfaces; the outer surface of the housing 11 and the outside of the inner wedge block 12 are designed into an arc surface structure, effectively preventing stress concentration and tip discharge phenomena; the support clamp 4 is composed of two symmetric metal plate bodies provided with a semicircular guy wire groove A, a semicircular conductor groove B, and two clamping bolt connection holes C; the guy wire device 5 is composed of a steel strand 51 and a steel anchor 52, and steel anchors 52 are crimped at both ends of the steel strand 51; the tensioning device 7 is composed of a body 71, a threaded pull rod 72, a pin shaft 73, and a split pin 74. The body 71 is a return-shaped metal frame, and threaded holes matching the threaded pull rod 72 are arranged on two symmetric sides; one end of the threaded pull rod 72 is a circular ring connection buckle, and a pin shaft hole is perpendicularly opened at the other end; the pin shaft 73 is installed in the pin shaft hole at the end of the threaded pull rod 72 and is locked by the split pin 74.

Claims

1. Single-split conductor tension backup complete set of devices, which consists of a backup tension device (1), an extension rod (2), a guard wire (3), a support clamp (4), a guy wire device (5), a U-shaped ring (6), a tensioning device (7), a parallel hanger (8), and a connecting plate (9). It is characterized in that: The backup tension device (1) consists of a housing (11), an inner wedge block (12), and a hanger plate (13). One end of the inner wedge block (12) is arranged inside the housing (11), and connecting ear plates are symmetrically arranged on both sides of the other end. On both sides of the housing (11), ear shafts connected to the hanger plate (13) are symmetrically arranged. The hanger plate (13) is arranged on the ear shaft and is limited by an open pin and can rotate around the ear shaft. The housing (11) is composed of two identical wedge-shaped groove-type structures fastened by bolts, forming a wedge-shaped cavity in the shell that matches the inner wedge block (12). The inner wedge block (12) is composed of two symmetric wedge-shaped bodies, and a wire groove that matches the external shape of the wire is formed between the joint surfaces. The outer surface of the housing (11) and the outside of the inner wedge block (12) are designed into an arc surface structure, effectively preventing stress concentration and tip discharge phenomena. One end of the extension rod (2) is connected to the hanger plate (13) of the backup tension device (1), and the other end is connected to one end of the guy wire device (5) through a U-shaped ring (6). The other end of the guy wire device (5) is connected to one end of the tensioning device (7) through a U-shaped ring (6). The other end of the tensioning device (7) is connected to the connecting plate (9) through a parallel hanger (8). The tensioning device (7) consists of a body (71), a threaded rod (72), a pin shaft (73), and a cotter pin (74). The body (71) is a square-shaped metal frame, and threaded holes matching the threaded rod (72) are arranged on two symmetric sides. One end of the threaded rod (72) is a circular ring connection buckle, and a pin shaft hole is perpendicularly opened at the other end. The pin shaft (73) is installed in the pin shaft hole at the end of the threaded rod (72) and is locked by the cotter pin (74). On the surface of the connection part between the backup tension device (1) and the wire, the connection part between the support clamp (4) and the wire, and the connection part between the guy wire device (5) and the support clamp (4), a guard wire (3) is wrapped. The backup tension device (1) is a wedge-shaped tension clamp. The guard wire (3) is a preformed strand. The support clamp (4) is used to separate the wire from the backup complete set of devices to avoid the dancing between the wire and the backup complete set of devices. The connecting plate (9) is a fan-shaped connecting plate body.

2. The single-split conductor tension backup complete set of devices according to claim 1, It is characterized in that: The support clamp (4) consists of two symmetric metal plates provided with a semi-circular guy wire groove (A), a semi-circular wire groove (B), and two clamping bolt connection holes (C).

3. The single-split conductor tension backup complete set of devices according to claim 1, It is characterized in that: The guy wire device (5) consists of a steel strand (51) and a steel anchor (52), and steel anchors (52) are crimped at both ends of the steel strand (51).

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