CN211555602U

CN211555602U - Double-hanging-point duplex strain insulator string hanging device

Info

Publication number: CN211555602U
Application number: CN202020141234.9U
Authority: CN
Inventors: 刘平平; 岳灵平; 方杰; 殷志敏; 俞强; 缪正; 寿峰; 丁瀚; 张健; 王一波; 俞伟勇; 季世超
Original assignee: Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Current assignee: Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-09-22
Anticipated expiration: 2030-01-21

Abstract

The utility model relates to an electric power fitting especially relates to a strain insulator string of two pairs of hanging points pair is hung and is established device. The utility model provides a strain insulator string of two pairs of hanging points hangs establishes device, includes cross arm, first insulator string and second insulator string, is fixed with the connecting plate on the cross arm, and the one end of first insulator string and second insulator string is fixed on the connecting plate, and the other end and the wire fixed connection of first insulator string and second insulator string are provided with auxiliary device on the connecting plate. The utility model discloses can adopt two string point modes to install insulator chain in the string point department of shaft tower cross arm, stability is good, and the security is high.

Description

Double-hanging-point duplex strain insulator string hanging device

Technical Field

The utility model relates to an electric power fitting especially relates to a strain insulator string of two pairs of hanging points pair is hung and is established device.

Background

At present, most of tension towers with double split conductors are usually hung on a cross arm of a tower by a single hanging point, and two insulator strings are horizontally arranged to connect the conductors.

The existing single hanging point horizontal duplex tension insulator string connecting method has potential safety hazards. Once a problem occurs in a single hanging point, the wire in the first gear cannot be pulled, so that the wire and the insulator string fall into an important three-span section below, serious influence is caused, and safety is low.

"triple span" definition: refers to an overhead transmission line section spanning a high-speed railway, a highway and an important transmission channel.

For example, Chinese patent publication numbers are: CN205723014U, in a single string of some strain insulator-string of 2016 bulletin 11 month 23, its technical scheme main points are including U type link, extension ring, U type link, yoke plate, Z type string knot, bulb link, insulator cluster group, socket string knot, yoke plate, Z type link plate, parallel link plate, wedge strain clamp, the yoke plate is hung with the Z type and is buckled through bolted connection, the Z type is hung the knot and is equipped with the limit structure with the yoke plate butt, the socket is hung the knot and is passed through bolted connection with the yoke plate, the socket is hung the knot and is equipped with the limit structure with the yoke plate butt. Under each limit structure's effect, the Z type is hung to detain and link plate and bowl head and all be fixed connection with the link plate, cooperation insulator string group forms a stable rectangular structure, thereby avoid insulator string to produce the small-angle torsion under being unfavorable for the operating mode, be favorable to maintaining the joint strength of plug and tip gold utensil, but single string point in case the problem appears, wire in the grade will unable to be withheld, thereby can lead to the wire to drop in the important three-span district section of below together with insulator string, will cause serious influence, the security is low.

Disclosure of Invention

The utility model discloses mainly be in case to current single string point is in a single day the problem appears, will can't hold the wire in the first gear to can lead to the wire to drop in the important three span district section of below together with insulator string, will cause serious influence, the problem that the security is low provides a strain insulator string of two string point pair and hangs and establishes the device, can adopt two string point modes to install insulator string in the string point department of shaft tower cross arm, and stability is good, and the security is high.

The purpose of the utility model is mainly realized by the following scheme: a strain insulator string hanging device with double hanging points and double connection comprises a cross arm, a first insulator string and a second insulator string, wherein a connecting plate is fixed on the cross arm, one end of the first insulator string and one end of the second insulator string are fixed on the connecting plate, the other ends of the first insulator string and the second insulator string are fixedly connected with a lead, an auxiliary device is arranged on the connecting plate and comprises a supporting shell fixed on the connecting plate, a hollow cavity is arranged in the supporting shell, supporting rods in sliding connection with the side wall of the hollow cavity are symmetrically distributed on the left side and the right side of the hollow cavity, a supporting hook body used for supporting the first insulator string or the second insulator string is arranged at one end of each supporting rod after penetrating through the supporting shell, and a sliding block is arranged at one end of each supporting rod far away from the supporting hook body, the slider on be provided with the translation pole, the bracing piece in correspond the translation pole and be provided with horizontal cavity, the one end of keeping away from the slider of translation pole be provided with horizontal cavity's lateral wall sliding connection's translation piston, horizontal cavity on be provided with vertical cavity, vertical cavity sliding connection have spacing piston, spacing piston on be connected with and be used for supporting the gag lever post on corresponding bracing piece. The cross arm is fixed with a connecting plate, one end of the first insulator string and one end of the second insulator string are fixed on the connecting plate, the other ends of the first insulator string and the second insulator string are fixedly connected with a lead, the structure is simple, the processing and connection are simple and convenient, the tension can be shared, and the backup protection effect can be achieved, the connecting plate is provided with an auxiliary device, the auxiliary device comprises a supporting shell fixed on the connecting plate, a hollow cavity is arranged in the supporting shell, supporting rods in sliding connection with the side wall of the hollow cavity are symmetrically distributed on the left side and the right side of the hollow cavity, a supporting hook body used for supporting the first insulator string or the second insulator string is arranged after one end of each supporting rod penetrates through the supporting shell, the supporting hook body is in a circular arc shape matched with the shapes of the first insulator string and the second insulator string, a sliding block is arranged at one, the support shell is internally provided with a horizontal cavity corresponding to the translation rod, one end of the translation rod, far away from the sliding block, is provided with a translation piston in sliding connection with the side wall of the horizontal cavity, the horizontal cavity is provided with a vertical cavity, the vertical cavity is internally connected with a limit piston in sliding connection, the limit piston is connected with a limit rod for abutting against a corresponding support rod, a worker sequentially mounts and connects each device, when one hanging point is broken, the insulator string connected with the limit piston drives the support hook body and the support rod to move towards the direction far away from the other insulator string, the support rod drives the sliding block to move together when moving, so that the sliding block drives the translation rod and the translation piston to move, when moving, the translation piston drives the gas in the horizontal cavity to compress and move towards the vertical cavity, and the gas can play a certain buffering role in the process, prevent auxiliary device atress suddenly and breaking occur, compressed gas can drive spacing piston and remove, thereby make spacing piston can drive the gag lever post and support on the bracing piece and the removal of restriction bracing piece, when the bracing piece is more toward keeping away from when supporting housing direction removes, thereby gaseous thrust that the gag lever post received is more than can tightly support on the bracing piece more, prevent that the insulator chain of this fracture department from taking place great displacement, make even be afraid of that one of them hangs the point and take place the fracture, also can guarantee certain stability under auxiliary device's effect, the security is high.

Preferably, the first insulator string and the second insulator string are connected with the lead through a connecting plate. The first insulator string and the second insulator string are connected with the lead through the connecting plate, so that the installation is simple and the connection is firm.

Preferably, the support housing is fixed to the connecting plate by fastening bolts. The supporting shell is fixed on the connecting plate through a fastening bolt, and the connection is very stable.

Preferably, the connecting plate is fixed on the cross arm through a positioning bolt. The connecting plate passes through positioning bolt to be fixed on the cross arm, and the installation is convenient and firm.

Preferably, a buffer spring is arranged between the sliding block and the corresponding limiting rod. And a buffer spring is arranged between the sliding block and the corresponding limiting rod, and the buffer spring can buffer the energy of part of the insulator string when the insulator string falls off, so that the stability of the whole device is improved.

Preferably, one end of the translation piston, which is far away from the translation rod, is provided with a guard rod for limiting the maximum displacement of the translation piston. One end of the translation piston, which is far away from the translation rod, is provided with a protection rod for limiting the maximum displacement of the translation piston, and the maximum displacement of the translation piston is limited by the protection rod, so that the air pressure in the horizontal cavity cannot explode due to overhigh pressure, and the safety is improved.

Preferably, one end of the limiting rod, which is far away from the limiting piston, is provided with a limiting block. The one end of gag lever post that keeps away from spacing piston is provided with the stopper, and the area of stopper should be greater than the area of gag lever post to the frictional force to the bracing piece when having increased the gag lever post and supporting on the bracing piece.

Preferably, the limiting block is made of rubber materials. The stopper is made by rubber materials, and rubber materials has elasticity, can warp, can increase when receiving pressure and the bracing piece between frictional force to improve stability.

Therefore, the utility model discloses a strain insulator string of two pairs of hanging points pair is hung and is established device possesses following advantage: the utility model discloses simple structure, processing is connected portably, and the installation is firm, can adopt two string point modes to install insulator chain in the string point department of shaft tower cross arm, and stability is good, and the security is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view of the auxiliary device of the present invention.

Illustration of the drawings: 1-cross arm, 2-fastening bolt, 3-connecting plate, 4-positioning bolt, 5-first insulator string, 6-second insulator string, 7-auxiliary device, 8-supporting hook body, 9-connecting plate, 10-lead, 11-supporting rod, 12-supporting shell, 13-hollow cavity, 14-translation rod, 15-translation piston, 16-horizontal cavity, 17-guard rod, 18-limiting piston, 19-vertical cavity, 20-limiting rod, 21-limiting block, 22-buffer spring and 23-sliding block.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example 1:

as shown in figures 1 and 2, a strain insulator string hanging device with double hanging points and double connection comprises a cross arm 1, a first insulator string 5 and a second insulator string 6, wherein a connecting plate 3 is fixed on the cross arm 1, the cross section of the connecting plate 3 is L-shaped, so that the connecting plate 3 is convenient to install, one ends of the first insulator string 5 and the second insulator string 6 are fixed on the connecting plate 3, the other ends of the first insulator string 5 and the second insulator string 6 are connected with a lead 10 through a connecting plate 9, the structure is simple, the processing and the connection are simple and convenient, the tensile force can be shared, the backup protection effect is realized, an auxiliary device 7 is arranged on the connecting plate 3, the auxiliary device 7 comprises a supporting shell 12 fixed on the connecting plate 3, the supporting shell 12 is fixed on the connecting plate 3 through a fastening bolt 2, the connecting plate 3 is fixed on the cross arm 1 through a positioning bolt 4, the installation is convenient and firm, a hollow cavity 13, the left side and the right side of the hollow cavity 13 are symmetrically distributed with supporting rods 11 which are in sliding connection with the side wall of the hollow cavity 13, one end of each supporting rod 11 penetrates through the supporting shell 12 and is provided with a supporting hook body 8 for supporting the first insulator string 5 or the second insulator string 6, the supporting hook body 8 is in a circular arc shape matched with the shapes of the first insulator string 5 and the second insulator string 6, one end of each supporting rod 11, far away from the supporting hook body 8, is provided with a sliding block 23, the sliding block 23 is provided with a translation rod 14, a horizontal cavity 16 is arranged in the supporting shell 12 corresponding to the translation rod 14, one end, far away from the sliding block 23, of the translation rod 14 is provided with a translation piston 15 which is in sliding connection with the side wall of the horizontal cavity 16, the horizontal cavity 16 is provided with a vertical cavity 19, the vertical cavity 19 is in sliding connection with a limiting piston 18, the limiting piston, the working personnel firstly realize the installation and connection of each device in turn, when one of the hanging points is broken, the insulator string connected with the hanging point can drive the supporting hook body 8 and the supporting rod 11 to move together in the direction away from the other insulator string, the supporting rod 11 can drive the sliding block 23 to move together when moving, so that the sliding block 23 drives the translation rod 14 and the translation piston 15 to move, the translation piston 15 can drive the gas in the horizontal cavity 16 to compress and move in the direction of the vertical cavity 19, the gas can play a certain buffering role in the process, the auxiliary device 7 is prevented from being broken due to sudden stress, the compressed gas can drive the limiting piston 18 to move, so that the limiting piston 18 can drive the limiting rod 20 to abut against the supporting rod 11 and limit the movement of the supporting rod 11, when the supporting rod 11 moves in the direction away from the supporting shell 12, the larger the thrust of the gas that the gag lever post 20 received thereby can tightly support on bracing piece 11 more, prevent that the insulator string of this fracture department from taking place great displacement for even there is one of them hanging point to break off, also can guarantee certain stability under auxiliary device 7's effect, the security is high.

And a buffer spring 22 is arranged between the sliding block 23 and the corresponding limiting rod 20, and the energy generated when part of the insulator string falls off can be buffered by the buffer spring 22, so that the stability of the whole device is improved.

One end of the translation piston 15, which is far away from the translation rod 14, is provided with a guard rod 17 for limiting the maximum displacement of the translation piston 15, and the guard rod 17 limits the maximum displacement of the translation piston 15, so that the air pressure in the horizontal cavity 16 cannot explode due to overhigh pressure, and the safety is improved.

A limiting block 21 is arranged at one end of the limiting rod 20 far away from the limiting piston 18, and the area of the limiting block 21 is larger than that of the limiting rod 20, so that the friction force of the limiting rod 20 on the supporting rod 11 when the limiting rod 20 abuts against the supporting rod 11 is increased; the limiting block 21 is made of a rubber material, and the rubber material has elasticity and can deform, so that the friction force between the limiting block and the supporting rod 11 can be increased when the limiting block is under pressure, and the stability is improved.

It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

Claims

1. A strain insulator string hanging device with double hanging points and double connection comprises a cross arm, a first insulator string and a second insulator string, and is characterized in that a connecting plate is fixed on the cross arm, one ends of the first insulator string and the second insulator string are fixed on the connecting plate, the other ends of the first insulator string and the second insulator string are fixedly connected with a lead, an auxiliary device is arranged on the connecting plate and comprises a supporting shell fixed on the connecting plate, a hollow cavity is arranged in the supporting shell, supporting rods in sliding connection with the side wall of the hollow cavity are symmetrically distributed on the left side and the right side of the hollow cavity, a supporting hook body used for supporting the first insulator string or the second insulator string is arranged at one end of each supporting rod after penetrating through the supporting shell, and a sliding block is arranged at one end of each supporting rod far away from the supporting hook body, the slider on be provided with the translation pole, the bracing piece in correspond the translation pole and be provided with horizontal cavity, the one end of keeping away from the slider of translation pole be provided with horizontal cavity's lateral wall sliding connection's translation piston, horizontal cavity on be provided with vertical cavity, vertical cavity sliding connection have spacing piston, spacing piston on be connected with and be used for supporting the gag lever post on corresponding bracing piece.

2. The double hanging point duplex strain insulator string hanging device as claimed in claim 1, wherein the first insulator string and the second insulator string are connected with a lead through a connecting plate.

3. The double-hanging-point duplex strain insulator string hanging device as claimed in claim 1, wherein the support housing is fixed on the connecting plate by fastening bolts.

4. The double-hanging-point duplex strain insulator string hanging device as claimed in claim 1, 2 or 3, wherein the connecting plate is fixed on the cross arm through a positioning bolt.

5. The double-hanging-point duplex strain insulator string hanging device as claimed in claim 1, 2 or 3, wherein a buffer spring is arranged between the sliding block and the corresponding limiting rod.

6. The double-hanging-point duplex strain insulator string hanging device as claimed in claim 1, 2 or 3, wherein a protection rod for limiting the maximum displacement of the translation piston is arranged at one end of the translation piston far away from the translation rod.

7. The double-hanging-point duplex strain insulator string hanging device as claimed in claim 1, 2 or 3, wherein a limiting block is arranged at one end of the limiting rod, which is far away from the limiting piston.