CN210577658U

CN210577658U - 220 kV ground wire connection fitting

Info

Publication number: CN210577658U
Application number: CN201921235601.5U
Authority: CN
Inventors: 吴超; 王帅
Original assignee: Luoyang Yonggu Electric Equipment Co Ltd
Current assignee: Luoyang Yonggu Electric Equipment Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-19
Anticipated expiration: 2029-08-01

Abstract

In order to solve the defect that a connecting structure on the tower side of a 220 kV ground wire connecting fitting terminal in the prior art is easy to wear, the utility model provides a 220 kV ground wire connecting fitting which comprises a ground wire plate, a No. 1 steel anchor, a strain clamp, a No. 2 steel anchor, a first U-shaped ring, an adjusting plate, a second U-shaped ring and a fourth U-shaped ring which are sequentially connected end to end, and is characterized by further comprising a wear-resistant component arranged between the ground wire plate and the No. 1 steel anchor; the wear-resistant component adopts a ring-chain connecting structure or a ring-ring connecting structure or a ball head connecting structure. The utility model discloses simple structure, simple to operate, the effectual life-span that has promoted 220 kV ground wire link fitting and the stability of electric wire netting.

Description

220 kV ground wire connection fitting

Technical Field

The utility model relates to a 220 kV ground wire link fitting field, specific wear-resisting ground wire link fitting that says so.

Background

The electric power connection fitting is an important device for connection and combination in an electric power system, and is a metal accessory which plays a role in transmitting mechanical load, electrical load and certain protection, and as shown in fig. 1, the ground wire connection fitting comprises a ground wire plate, a steel anchor, a strain clamp, an adjusting plate, a U-shaped ring, a bolt, a right-angle hanging plate and the like, and the main function of the ground wire connection fitting is to anchor and connect the ground wire with a framework or an iron tower. The connecting hardware is affected by different working conditions in the actual use process, such as abrasion, short circuit, lightning stroke, ice coating, self material quality factors and the like, and various damages and fractures can be generated.

20 days in 5 months in 2018, 13:04, 220 kV of a certain transformer substation, and a certain I-loop breaker trips when a person is sent to check a line, and the whole ground wire at the framework side and the terminal tower side of the line transformer substation is found to be broken and fall. The connecting hardware with broken framework side is a 4.8-grade bolt as shown at the position f in fig. 1, the model is M16 multiplied by 60, and the connecting hardware with broken terminal tower side is a steel anchor as shown at the position b (close to the position f) in fig. 1. The accident causes power outage of the whole station, so that large-area power outage in the area is caused, and adverse social influence is caused.

And (4) checking the appearance of the bolt at the position f at the fracture position, wherein the bolt is M16 multiplied by 70, the right-angle hanging plate is connected with the steel anchor, and the bolt screw is completely fractured. The bolt fracture has deep yellow rust, obvious abrasion traces can be seen, and no metal melting traces can be seen. The steel anchor and the bolt joint are seriously worn, no metal melting trace is seen, the original diameter of the steel anchor is about 16.9 mm, the thickness of a worn position is only 2.9 mm, the wear amount reaches 14.0 mm, and the steel anchor is seriously worn.

Therefore, the connecting structure on the side of the terminal tower of the existing 220 kV ground wire connecting fitting has the defect of easy abrasion.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcoming that there is easy wearing and tearing in the connection structure of 220 kV ground wire link fitting terminal tower side among the prior art, the utility model provides a 220 kV ground wire link fitting.

In order to realize the purpose, the utility model discloses a technical scheme be: a220 kV ground wire connecting fitting comprises a ground wire plate, a No. 1 steel anchor, a strain clamp, a No. 2 steel anchor, a first U-shaped ring, an adjusting plate, a second U-shaped ring and a fourth U-shaped ring which are sequentially connected end to end, and further comprises a wear-resistant component arranged between the ground wire plate and the No. 1 steel anchor; the wear-resistant component adopts a ring-chain connecting structure or a ring-ring connecting structure or a ball head connecting structure.

The principle of the utility model is that: the existing connection form is changed into a ring-chain connection or a ring-ring connection, so that the abrasion is reduced, and the service life is prolonged.

Has the advantages that: the utility model discloses set up the wear-resisting subassembly of ring-chain connection or ring-ring connection structure between the floor-line board and No. 1 steel anchor, reduce the wearing and tearing effect, increase life. The utility model discloses simple structure, simple to operate, the effectual life-span that has promoted 220 kV ground wire link fitting and the stability of electric wire netting.

Drawings

Fig. 1 is a schematic structural diagram of a conventional 220 kV ground wire connection fitting.

Fig. 2 is an embodiment of the present invention.

Fig. 3 is another embodiment of the present invention.

Fig. 4 is yet another embodiment of the present invention.

Fig. 5 is a top view of fig. 4.

Figure 6 is a partial view of figure 4 with the upper circular plate removed.

It is to be understood that: the improvement of the utility model is mainly at 8; the vertical line position in fig. 2 is provided with bolt fastening.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

A220 kV ground wire link fitting, including the ground plate 1 of end-to-end connection in proper order, No. 1 steel anchor 2, strain clamp 3, No. 2 steel anchor 4, adjusting plate 5, first U type ring 6 and second U type ring 7, its characterized in that still includes the wear-resisting subassembly 8 of setting between ground plate 1 and No. 1 steel anchor 2.

Specific example I: referring to fig. 2, the wear assembly 8 may be a third U-ring 801; the annular end of the third U-shaped ring 801 is connected with the annular end of the No. 1 steel anchor 2; the open end of the third U-shaped ring 801 is connected with the ground wire plate 1 through a bolt; the ground plate 1 is provided with a reserved opening. The third U-shaped ring 801 is connected with the ring end of the No. 1 steel anchor 2 to form a ring-chain connection structure.

In the above embodiment, since the ground plate 1 is bolted to the open end of the third U-shaped ring 801, after the bolting is used, the ground plate 1 and the third U-shaped ring 801 form a whole, and the shaking and the abrasion are mainly concentrated between the third U-shaped ring 801 and the annular end of the No. 1 steel anchor 2. Because the ring-chain connection can effectively prevent abrasion, the service life is prolonged, and the purpose is achieved.

Specific implementation II: in use, the connection may be made using the annular member 802 in addition to the third U-ring 801 to the annular end of the steel anchor No. 1 2.

As shown in fig. 3, wear assembly 8 includes an annular member 802; the ground plate 1 is provided with a hole 1A for passing through the annular component 802; both ends of the annular member 802 are provided with connecting plates 802A, and the two connecting plates 802A are connected together by bolts. Preferably, the diameter of the hole 1A is larger than the diameter of the annular member 802.

In this embodiment, the annular member 802 is disposed between the annular ends of the floor plate 1 and the No. 1 steel anchor 2, and the annular ends of the floor plate 1, the annular member 802 and the No. 1 steel anchor 2 are similar to a chain-like structure due to the holes 1A on the floor plate 1, and the rings are buckled and connected together. The positions of abrasion are dispersed into two positions from one position in the specific embodiment I, so that the abrasion probability and the abrasion degree are reduced, and the service life is further prolonged.

Specific example III: as shown in fig. 4 to 5, the wear-resistant assembly 8 comprises a wire clamp body 803 for fixing the annular part of the steel anchor number 1 2, a first stud 804 with one end connected to the wire clamp body 803, a ball-shaped universal joint 805 with a rotating end connected to the other end of the first stud 804, and a connecting frame 806; the attachment frame 806 includes a stud segment 8061 and a Π -shaped member 8062; the stud section 8061 is vertically arranged on the horizontal section of the n-shaped member 8062; the stud segment 8061 is connected to the fixed end of the ball gimbal 805; the vertical section of the n-shaped piece 8062 is provided with a through hole for connecting with the ground wire board 1.

Wherein, the wire clamping body 803 comprises an upper circular plate 8031, a downward inclined upper extension 8032 connected with the upper circular plate 8031, a lower circular plate 8033, and an upward inclined lower extension 8034 connected with the lower circular plate 8033; the upper extension section 8032 and the lower extension section 8034 are connected, and a threaded hole matched with the first stud 804 is arranged on the end face of the joint.

As shown in fig. 6, the diameters of the upper circular plate 8031 and the lower circular plate 8033 are the same, and corresponding bolt holes are arranged on the upper circular plate 8031 and the lower circular plate 8033; bolts are inserted into the bolt holes and nuts are used to fix the upper circular plate 8031, the annular end of the No. 1 steel anchor 2, and the lower circular plate 8033 as a whole. It should be noted that the outer side of the bolt inserted into the bolt hole contacts the inner side of the ring-shaped end of the steel anchor No. 1 2, preventing the steel anchor No. 1 2 from moving relatively.

For the convenience of installation, it is considered that the bolt hole is formed as a long hole to ensure that the outer side of the bolt inserted into the bolt hole is in full contact with the inner side of the annular end of the steel anchor No. 1 2. Preferably, the first stud 804 is connected to the rotating end of the ball-and-socket joint 805; the fixed end of the spherical universal joint 805 is connected with the stud section 8061 of the connecting frame 806 to ensure the reliability of the 220 kV ground wire connection fitting during swinging.

In this embodiment, the spherical universal joint 805 effectively solves the wear problem in the prior art, and does not affect the swing of the 220 kV ground wire connection fitting.

The above description is only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily change or replace the technical scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.

Claims

1. A220 kV ground wire connecting fitting comprises a ground wire plate (1), a No. 1 steel anchor (2), a strain clamp (3), a No. 2 steel anchor (4), a first U-shaped ring (6), an adjusting plate (5), a second U-shaped ring (7) and a fourth U-shaped ring (9) which are sequentially connected end to end, and is characterized by further comprising a wear-resistant component (8) arranged between the ground wire plate (1) and the No. 1 steel anchor (2); the wear-resistant component adopts a ring-chain connecting structure or a ring-ring connecting structure or a ball head connecting structure.

2. The 220 kV ground wire connection fitting as claimed in claim 1, wherein: the wear-resisting component (8) is a third U-shaped ring (801); the annular end of the third U-shaped ring (801) is connected with the annular end of the No. 1 steel anchor (2); the open end of the third U-shaped ring (801) is connected with the floor panel (1) through a bolt.

3. The 220 kV ground wire connection fitting as claimed in claim 1, wherein: the wear assembly (8) includes an annular member (802); the ground wire plate (1) is provided with a hole (1A) for passing through the annular component (802); two ends of the annular component (802) are provided with connecting plates (802A); the two connecting plates (802A) are detachably connected together; the diameter of the hole (1A) is larger than the diameter of the annular member (802).

4. The 220 kV ground wire connection fitting as claimed in claim 1, wherein: the wear-resisting assembly (8) comprises a wire clamp body (803) for fixing the annular part of the No. 1 steel anchor (2), a first stud (804) with one end connected to the wire clamp body (803), and a spherical universal joint (805) with the rotating end connected with the other end of the first stud (804); the fixed end of the spherical universal joint (805) is connected with the connecting frame (806); the connecting frame (806) is connected with the floor board (1).

5. The 220 kV ground wire connection fitting as claimed in claim 4, wherein: the wire clamp body (803) comprises an upper circular plate (8031), an upper extension section (8032) which is connected with the upper circular plate (8031) and inclines downwards, a lower circular plate (8033) and a lower extension section (8034) which is connected with the lower circular plate (8033) and inclines upwards;

the upper extension section (8032) and the lower extension section (8034) are connected, and a threaded hole matched with the first stud (804) is formed in the end face of the connection position.

6. The 220 kV ground wire connection fitting as claimed in claim 4, wherein: the connecting frame (806) comprises a stud section (8061) and a pi-shaped piece (8062); the stud section (8061) is vertically arranged on the horizontal section of the n-shaped piece (8062); the stud section (8061) is connected with the fixed end of the spherical universal joint (805); the vertical section of the n-shaped piece (8062) is provided with a through hole for connecting with the ground wire board (1).