CN220874197U - A backup wire clamp device for overhead wires - Google Patents

Abstract

The utility model relates to the technical field of hardware fittings for overhead wires, and discloses a backup wire clamp device for overhead wires, which comprises two groups of backup wire clamp assemblies respectively arranged on two sides of a suspension wire clamp of the overhead wires, wherein each backup wire clamp assembly comprises a fixing piece, a connecting piece and a wire clamp body which are sequentially connected, the fixing piece is used for fixedly connecting a cross arm of a pole tower connected with the suspension wire clamp, and the wire clamp body is a detachable wedge-shaped wire clamp and is used for clamping the overhead wires on one side of the suspension wire clamp. According to the utility model, the detachable wedge-shaped wire clamp is adopted as the wire clamp body, after the suspension wire clamp is loosened, the tension of the overhead wire at one side of the wedge-shaped wire clamp far away from the suspension wire clamp is increased, the wedge-shaped wire clamp can firmly clamp the overhead wire, and the wedge-shaped wire clamp can be quickly hung on the overhead wire under the condition of not breaking the wire, so that the live installation of the backup wire clamp is realized, the installation operation time of the backup wire clamp is shortened, the construction difficulty is reduced, and the maintenance efficiency of the overhead wire is improved.

Description

A backup wire clamp device for overhead wires

Technical Field

The utility model relates to the technical field of hardware for overhead wires, in particular to a backup wire clamp device for overhead wires.

Background technique

In the field of power transmission, overhead power lines are a widely used facility. They are composed of line towers, overhead wires, insulators, hardware, guy wires, tower foundations, grounding devices and other parts. They are erected above the ground and are mainly used to transmit electric energy between two points in the system. As the core part of overhead power lines, overhead wires are fixed to towers through hardware such as suspension clamps, including overhead conductors and overhead ground wires. Overhead conductors and overhead ground wires respectively assume the important functions of conduction and lightning protection.

In actual operation, overhead wire failures occur from time to time, such as broken strands or slippage of overhead wires caused by the influence of the external environment, external force damage, and aging of equipment, as well as deflection or damage of wire clamps. In order to ensure that the line resumes power supply as soon as possible, it is necessary to temporarily install backup wire clamps to stabilize the wires and loosen the suspension wire clamps for maintenance. At present, the backup wire clamps used for overhead wire suspension clamps are bolt-tightened or crimped. The former requires the use of tools to cut the overhead wires during operation so that the wires can be inserted into the wire clamps. When operating the latter, in addition to the wire-breaking tool, a special wire stripping tool is also required to cut off the aluminum strands of the outer layer of the steel-core aluminum stranded wire at the crimping part so that the crimping wire clamps and the internal steel core can provide strength. The installation process of the above two types of backup wire clamps is cumbersome, the construction period is long, the construction difficulty is high, and it is not convenient for temporary installation, resulting in low maintenance efficiency of overhead wires.

Utility Model Content

The utility model discloses a backup wire clamp device for overhead wires, which solves the technical problem that the existing backup wire clamps for overhead wire suspension clamps are complicated to install, resulting in low maintenance efficiency of the overhead wires.

The utility model provides a backup wire clamp device for overhead wires, which is characterized by comprising: two groups of backup wire clamp components respectively used to be arranged on both sides of the suspension wire clamp of the overhead wire;

The backup wire clamp assembly includes a tower unit and a wire clamp body;

The tower connecting unit is used to fix the clamp body to the pole tower connected to the suspension clamp;

The wire clamp body is a detachable wedge-shaped wire clamp used for clamping the overhead wire on one side of the suspension wire clamp.

Optionally, the tower connecting unit includes a fixing member and a connecting member;

The fixing member is used to be detachably fixed on the pole tower;

One end of the connecting member is rotatably connected to the fixing member, and the other end is rotatably connected to the wire clamp body;

The projections of the two groups of backup wire clamp assemblies in the length direction of the overhead wire are V-shaped;

The projections of the two groups of backup wire clamp assemblies in the horizontal radial direction of the overhead wire are in an eight-shaped shape.

Optionally, the fixing member is a tension splint adapted to the shape of the connection position of the tower.

Optionally, the wire clamp body comprises a shell and two clamping blocks;

The housing comprises two detachably fixedly connected sub-housings, and a wedge-shaped hole is formed in the housing and passes through both ends thereof;

The longitudinal cross-sectional area of the front end of the wedge-shaped hole is smaller than the longitudinal cross-sectional area of the rear end thereof;

The two clamping blocks are inserted into the wedge-shaped hole;

The inner sides of the two clamping blocks are jointly formed with wire holes for clamping the overhead wires;

The outer sides of the two clamping blocks are adapted to the shape of the wedge-shaped hole.

Optionally, an elastic pad is provided on the inner side of the front end of the clamping block.

Optionally, two ear plates with threaded holes are provided on the outer side of the rear end of the clamping block;

The two clamping blocks are detachably fixedly connected via the ear plates and bolts.

Optionally, each component of the wire clamp body is a solid forging made of an aluminum-magnesium alloy material with a surface hard anodized.

Optionally, the components of the wire clamp body are made of 6 series aluminum alloy material.

Optionally, the connecting member includes a hanging ring, a basket bolt and a connecting hanging plate which are connected in sequence.

Optionally, the connecting member further comprises an insulator string connected at any position between the fixing member and the connecting hanging plate.

It can be seen from the above technical solutions that the utility model has the following advantages:

The utility model provides a backup wire clamp device for overhead wires, including two groups of backup wire clamp assemblies respectively arranged on both sides of the suspension wire clamp of the overhead wire, the backup wire clamp assembly includes a fixing part, a connecting part and a wire clamp body connected in sequence, the fixing part is used for fixed connection with the cross arm of the pole tower connected to the suspension wire clamp, and the wire clamp body is a detachable wedge-shaped wire clamp, which is used to clamp the overhead wire on one side of the suspension wire clamp. The utility model adopts a detachable wedge-shaped wire clamp as the wire clamp body. After the suspension wire clamp is loosened, the tension of the overhead wire on the side of the wedge-shaped wire clamp away from the suspension wire clamp increases, the wedge-shaped wire clamp can firmly clamp the overhead wire, and the wedge-shaped wire clamp can be quickly hung on the overhead wire without breaking the cable, so as to realize the live installation of the backup wire clamp, shorten the installation operation time of the backup wire clamp, reduce the construction difficulty, and improve the maintenance efficiency of the overhead wire.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

FIG1 is a schematic structural diagram of an overhead wire backup clamp device after installation provided in an embodiment of the utility model;

FIG2 is a schematic structural diagram of an overhead wire backup clamp device after installation provided in an embodiment of the utility model;

FIG3 is a schematic structural diagram of an overhead wire backup clamp device after installation provided in an embodiment of the utility model;

FIG4 is a schematic diagram of the structure of the wire clamp body provided in an embodiment of the utility model when clamping an overhead wire;

FIG5 is a schematic diagram of the force applied to the wire clamp body provided in an embodiment of the utility model when clamping an overhead wire;

FIG6 is a schematic structural diagram of a wire clamp body and a connecting hanging plate provided in an embodiment of the present utility model;

FIG7 is a schematic diagram of the structure of a clamping block provided in an embodiment of the present utility model;

FIG8 is a schematic diagram of the structure of a clamping block provided in an embodiment of the present utility model;

FIG. 9 is a schematic diagram of the structure of the elastic pad provided in an embodiment of the present utility model.

Figure numerals: 11-fixing part, 12-connecting part, 121-hanging ring, 122-basket bolt, 123-connecting hanging plate, 124-insulator string, 2-clamp body, 21-shell, 22-clamp block, 221-ear plate, 222-elastic pad, 3-suspension clamp, 4-pole tower, 5-overhead wire.

Detailed ways

The utility model discloses a backup wire clamp device for overhead wires, which is used to solve the technical problem that the backup wire clamp for existing overhead wire suspension clamps is complicated to install, resulting in low maintenance efficiency of overhead wires.

The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 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 this utility model can be understood according to specific circumstances.

Referring to FIGS. 1 and 2 , an embodiment of the utility model provides a backup wire clamp device for overhead wires, comprising: two sets of backup wire clamp assemblies respectively used to be arranged on both sides of a suspension wire clamp 3 of an overhead wire 5;

The backup wire clamp assembly includes a tower unit and a wire clamp body 2;

The tower connecting unit is used to fix the clamp body 2 to the pole tower 4 connected to the suspension clamp 3;

The wire clamp body 2 is a detachable wedge-shaped wire clamp used for clamping the overhead wire 5 on one side of the suspension wire clamp 3 .

It should be noted that the detachable wedge-shaped wire clamp refers to a wire clamp that adopts a wedge-shaped quick-install structure and compresses the overhead wires by adjusting the wedge block or a similar structure to achieve a reliable electrical and mechanical connection effect. It allows construction personnel to easily install or remove it without damaging the wires. It is used to clamp and fix the wires in the tension section and large span area of non-straight pole towers. In the utility model, it is used on the straight pole towers of the straight section of the overhead line as the main body of the backup wire clamp of the suspension wire clamp 3.

The specific structure of the wire clamp body 2 can be seen in Figures 4 to 8. The wire clamp body 2 includes a shell 21 and two clamping blocks 22. The shell 21 includes two sub-shells that are detachably fixed and connected. A wedge-shaped hole is formed in the shell 21 and passes through both ends thereof. The longitudinal cross-sectional area of the front end of the wedge-shaped hole is smaller than the longitudinal cross-sectional area of the rear end thereof. The front end of the wedge-shaped hole is located at the end of the wedge-shaped wire clamp away from the suspension wire clamp 3, and the rear end of the wedge-shaped hole is located at the end of the wedge-shaped wire clamp close to the suspension wire clamp 3. The two clamping blocks 22 are inserted into the wedge-shaped hole. The inner sides of the two clamping blocks 22 are jointly formed with wire holes for clamping the overhead wires 5. The outer sides of the two clamping blocks 22 are adapted to the shape of the wedge-shaped hole. After the two clamping blocks 22 are inserted into the wedge-shaped hole and tightened, the clamping force of the clamping blocks 22 on the overhead wires 5 is uniformly transmitted to the wire core along the radial direction of the overhead wires 5, ensuring that the clamp body 2 has a strong grip on the overhead wires 5 under any extreme conditions, thereby avoiding the slippage of the overhead wires 5. ; Two ear plates 221 with threaded holes are arranged on the outer side of the rear end of the clamp block 22, and the two clamp blocks 22 are detachably fixedly connected by the ear plates 221, bolts and nuts. After the main body of the clamp block 22 is inserted into the wedge-shaped hole of the shell 21, the ear plates 221 are exposed outside the shell 21, which is convenient for installation of the clamp block 22; the longitudinal section of the wedge-shaped hole can be a circular or square shape that is easy to process, preferably a circular shape, which is convenient for assembly of the shell 21 and the clamp block 22; further, the size of the inner side of the clamp block 22 is compatible with the size of the overhead wire 5 to be clamped, and the shell 21 can be combined with the clamp blocks 22 with different inner side sizes, so that the same specification of the shell 21 can be adapted to a variety of types and specifications of cables (including aluminum stranded wire, steel core aluminum stranded wire, ground wire, OPGW optical cable, etc.) as much as possible, which simplifies the specification type of the shell 21 and greatly saves the logistics and inventory costs of the backup wire clamp device.

When the backup wire clamp device provided by the utility model is actually used, the two clamping blocks 22 can be first installed at the appropriate position of the overhead wire 5 on one side of the suspension wire clamp 3, and then the two sub-shells can be assembled and installed at the clamping blocks 22, and finally the wire clamp body 2 can be connected to the pole tower 4 using the tower connecting unit; when the overhead wire 5 is inspected and repaired, the construction personnel assemble the backup wire clamp device and then loosen the suspension wire clamp 3, and the tension of the overhead wire 5 on the side of the wedge-shaped wire clamp away from the suspension wire clamp 3 increases, the wedge-shaped wire clamp can firmly clamp the overhead wire 5, and the wedge-shaped wire clamp can be quickly hung on the overhead wire 5 without breaking the cable, thereby realizing the live installation of the backup wire clamp, shortening the installation operation time of the backup wire clamp, reducing the construction difficulty, and improving the inspection and repair efficiency of the overhead wire 5.

In a specific embodiment, the tower unit includes a fixing member 11 and a connecting member 12, wherein the fixing member 11 is used to be detachably fixed to the pole tower 4, one end of the connecting member 12 is rotatably connected to the fixing member 11, and the other end of the connecting member 12 is rotatably connected to the wire clamp body 2; the hanging point of the fixing member 11 on the pole tower 4 can be selected on the cross arm, main material or accessory bracket of the pole tower 4, and the corresponding hanging points of the fixing members 11 of the two sets of backup wire clamp assemblies can be set on the same cross arm or accessory bracket to which the corresponding suspension wire clamp 3 of the backup wire clamp device for overhead wires is connected, and also They can be respectively arranged on different cross arms, main materials or accessory brackets at the same horizontal height of the pole tower 4 to ensure the balance of the wire tension on both sides of the suspension wire clamp 3; the fixing parts 11 can adopt fixed connecting parts such as embedded parts and tension splints, preferably tension splints that are adapted to the shape of the connection position of the pole tower 4. For example, when the backup wire clamp assembly is connected to the cross arm of the pole tower 4 made of right-angle steel, an L-shaped splint and an L-shaped splint with ear plates on the outside can be selected. The two splints are connected by a combination of bolts, nuts and washers, and the ear plates are rotatably connected to the connecting parts 12.

More specifically, the connecting member 12 includes a hanging ring 121, a basket bolt 122 and a connecting hanging plate 123 which are rotatably connected in sequence. The hanging ring 121 is rotatably connected to the fixing member 11, and the connecting hanging plate 123 is rotatably connected to the housing 21 of the wire clamp body. The hanging ring 121 can be one or multiple hanging rings 121 which are connected in sequence. The specific number can be selected according to the setting direction of the connection of the fixing member 11 and the setting direction of the hanging ring 121 or the hook at the end of the basket bolt 122. A connecting column with a stopper at the outer end can be provided on the housing 21 of the wire clamp body. Any part of the connecting column body projected onto the stopper is located in the stopper. The connecting hanging plate 123 It can be rotatably connected to the wire clamp body through the connecting column; when installing the backup wire clamp device, after the wire clamp body is installed, one end of the connecting hanging plate 123 can be connected to the hanging ear outside the shell 21 of the wire clamp body, and the other end of the connecting hanging plate 123 is connected to one end of the basket bolt 122. The length of the basket bolt 122 can be adjusted according to the on-site conditions. The other end of the basket bolt 122 is connected to the hanging ring 121, and the hanging ring 121 is connected to the fixing member 11, and the fixing member 11 is fixed on the pole tower 4; through the above structure, when the suspension wire clamp 3 is loosened for maintenance, the sag of the adjacent gears of the overhead wire 5 can be kept unchanged. In order to maintain the electrical insulation between the overhead wire 5 and the pole tower 4 during maintenance, the connecting member 12 also includes an insulator string 124 connected to any position between the fixing member 11 and the connecting hanging plate 123, as shown in Figure 3, and the multiple insulator elements on the insulator string 124 in Figure 3 are omitted.

In a preferred embodiment, the projections of the two groups of backup wire clamp assemblies in the length direction of the overhead wire 5 are V-shaped, and the projections of the two groups of backup wire clamp assemblies in the horizontal radial direction of the overhead wire 5 are figure eight-shaped.

It should be noted that the two sets of wire clamp assemblies of the backup wire clamp device for the suspension wire clamp 3 of the overhead wire 5 are currently installed on the same vertical plane as the suspension wire clamp 3, that is, the hanging points of the two sets of wire clamp assemblies and the hanging points of the suspension wire clamp 3 are located on the same vertical plane, so that the overhead wire can swing naturally within a certain range to disperse the wind load, avoid the overhead wire 5 from being damaged by excessive transient tension generated by wind, and avoid fatigue damage to the overhead wire 5 caused by wind vibration. However, during temporary maintenance, the swing of the overhead wire under the action of wind will make the working environment of the construction workers unstable, with low safety and increased The difficulty of operation affects the maintenance efficiency; therefore, in the preferred embodiment, referring to Figure 1, the two groups of backup wire clamp assemblies are tilted toward the suspension wire clamp 3 in the length direction of the overhead wire 5, so that the projections of the two groups of backup wire clamp assemblies in the horizontal radial direction of the overhead wire 5 are in an eight-shaped shape. Referring to Figure 2, the two groups of backup wire clamp assemblies are tilted away from the suspension wire clamp 3 in the horizontal radial direction of the overhead wire 5, so that the projections of the two groups of backup wire clamp assemblies in the length direction of the overhead wire 5 are in a V-shape. The above structure can make the overhead wire backup wire clamp device clamp the overhead wire 5 more stably, which is suitable for temporary maintenance scenarios.

In a preferred embodiment, please refer to FIG7 , an elastic pad 222 is provided on the inner side of the front end of the clamp block 22. The elastic pad 222 is a buffer pad made of elastic materials such as rubber, elastic foam and/or polymer elastomer. By utilizing the elastic deformation principle of the elastic material, it can effectively reduce the vibration amplitude and frequency of the overhead wire 5, eliminate the vibration generated by the overhead wire 5, effectively suppress the influence of the vibration of the overhead wire 5 on the wire clamp body, and at the same time suppress the wear of the wire clamp body on the overhead wire 5 caused by the vibration; the elastic pad 222 is preferably made of butene rubber material and injection molding process; as shown in FIG9 , in order to ensure that the elastic pad 222 does not move relative to the clamp block 22 when the clamp block 22 clamps the overhead wire 5, a limit column can be provided on the back of the elastic pad 222, and a groove adapted to the limit column is provided on the inner side wall of the clamp block 22.

In a preferred embodiment, the components of the wire clamp body 2 are integral forgings made of aluminum-magnesium alloy material with a hard anodized surface. The integral forging process can make the gripping force and breaking load of the components of the wire clamp body 2 much greater than the breaking force of the overhead wire 5, ensuring safe and reliable operation in extremely harsh environments such as strong winds and ice cover; the surfaces of the components of the wire clamp body 2 are hard anodized, which has strong weather resistance and can achieve safe and stable operation with the same life cycle as the line; further, the components of the wire clamp body 2 are preferably made of 6 series aluminum alloy material, among which, for the wire clamp body shell 21 with a relatively complex structure and high requirements for processing accuracy, 6082-T6 aluminum alloy is preferably used, which has good formability, machinability and anodic reaction performance, and the clamp block 22 is preferably made of 6063 aluminum alloy, which has excellent extrudability, plasticity and corrosion resistance.

The above is a detailed introduction to a backup wire clamp device for overhead wires provided by the utility model. For a person skilled in the art, according to the idea of the embodiment of the utility model, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims (10)

1. A backup wire clamp device for overhead wires, comprising: the two groups of backup wire clamp assemblies are respectively arranged at two sides of the suspension wire clamp of the overhead wire;

the backup wire clamp assembly comprises a tower connecting unit and a wire clamp body;

the tower connecting unit is used for fixedly connecting the wire clamp body with a tower connected with the suspension wire clamp;

The wire clamp body is a detachable wedge-shaped wire clamp and is used for clamping an overhead wire on one side of the suspension wire clamp.

2. The backup wire clamp device of claim 1, wherein the tower connection unit comprises a fixture and a connector;

The fixing piece is detachably fixed on the pole tower;

One end of the connecting piece is rotationally connected with the fixing piece, and the other end of the connecting piece is rotationally connected with the wire clamp body;

The projections of the two groups of backup wire clamp assemblies in the length direction of the overhead wire are in a V shape;

and the projections of the two groups of backup wire clamp assemblies on the horizontal radial direction of the overhead wire are splayed.

3. The backup wire clamp device of claim 2, wherein the fixing member is a refractory Zhang Gaban adapted to the shape of the connection location of the tower.

4. The backup wire clamp device of claim 1, wherein the wire clamp body comprises a housing and two clamp blocks;

the shell comprises two detachable and fixedly connected sub-shells, and wedge-shaped holes penetrating through two ends of the shells are formed in the shells;

the longitudinal section area of the front end of the wedge-shaped hole is smaller than that of the rear end of the wedge-shaped hole;

The two clamping blocks are inserted into the wedge-shaped holes;

The inner sides of the two clamping blocks are jointly formed with wire holes for clamping the overhead wire;

the outer sides of the two clamping blocks are matched with the shape of the wedge-shaped hole.

5. The backup wire clamp device of claim 4, wherein the inner side of the front end of the clamp block is provided with an elastic pad.

6. The backup wire clamp device according to claim 4, wherein two ear plates provided with threaded holes are arranged on the outer side of the rear end of the clamping block;

The two clamping blocks are detachably and fixedly connected through the lug plate and the bolt.

7. The backup wire clamp device according to claim 1, wherein each part of the wire clamp body is a whole forging made of an aluminum-magnesium alloy material with a hard anodized surface.

8. The backup wire clamp device of claim 7, wherein the components of the wire clamp body are made of a 6-series aluminum alloy material.

9. The backup wire clamp device of claim 2, wherein the connector comprises a hanging ring, a basket bolt and a connecting hanging plate which are connected in sequence.

10. The backup wire clamp device of claim 9, wherein the connector further comprises an insulator string connected anywhere between the fastener and the connection strap.