CN214850379U

CN214850379U - A stockbridge damper for overhead line

Info

Publication number: CN214850379U
Application number: CN202121349832.6U
Authority: CN
Inventors: 顾嘉
Original assignee: Nantong Power Supply Co Of State Grid Jiangsu Electric Power Co; Nantong Tongming Group Co ltd
Current assignee: Nantong Power Supply Co Of State Grid Jiangsu Electric Power Co; Nantong Tongming Group Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-11-23
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a stockbridge damper for overhead line, this stockbridge damper include stockbridge damper body and stockbridge damper dead lever, the centre of dead lever has the stiff end, the lower extreme of stiff end has the connecting rod, and this connecting rod links to each other with the stockbridge damper body, has installed fixed slot in the through-hole of stiff end both sides, fixed pipeline has been installed in the through-hole of stiff end both sides, fixed pipeline intermediate position has the external screw thread, has fixing device on this external screw thread, fixed pipeline has circular arc fixed latch on being connected one side with the stiff end, fixed pipeline's opposite side has a plurality of breachs, has the metal shrapnel of outside extension on the pipeline of this breach bottom. The dead lever of this stockbridge damper carries out zonulae occludens with transmission line, reduces wind-force and strikes the stockbridge damper, and the position phenomenon of running appears, can also effectively solve the stockbridge damper simultaneously and to the damage on circuit surface.

Description

A stockbridge damper for overhead line

Technical Field

The utility model belongs to the technical field of electric power, a stockbridge damper for overhead line is related to.

Background

At present, with the acceleration of domestic industrial pace, power lines are increased, and overhead transmission lines are widely applied due to the advantages of low cost, strong transmission capacity and the like, and are the main components of power grids in China. However, the overhead power line is subjected to weather conditions such as wind, ice, low temperature, etc., and the line vibrates and waves. The vibration frequency is high, the amplitude is small, and the overhead line is repeatedly kinked at the suspension point by wind vibration, so that material fatigue is caused, and finally strand breakage and line breakage accidents are caused. The waving frequency is very low, but the amplitude is very big, very easily causes alternate flashover, causes serious accidents such as circuit tripping operation, power failure or wire burn. In order to eliminate the self-vibration of the line and the resonance caused by wind, a vibration damper is required to be arranged on the transmission conductor and the ground wire, and the vibration damper is additionally hung at the suspension point of a tower rod of the line to absorb or weaken the vibration energy, change the swing frequency of the line and prevent the line from vibrating or waving. The existing lead shockproof hammer clamps a power transmission lead or a ground wire through a concave clamping opening of the lead shockproof hammer through a bolt. In order to firmly position the shock absorber, excessive force is easily applied in the installation process, so that metal fatigue is generated on a stress component of the shock absorber; the lead expands with heat and contracts with cold due to temperature change; the wind power vibration loosens the vibration damper, and the factors easily cause the vibration damper to run. The shockproof effect is reduced, and the safe operation of the line is threatened. When the stockbridge damper is used, the transmission line can receive pressure downwards, and goes down for a long time, the epidermis of transmission line can cause the epidermis to damage because of the use of stockbridge damper, seriously influences the power supply reliability, and the maintainer need move the running point of stockbridge damper on the wire through instruments such as insulating ladder, and the maintenance work load is great with the degree of difficulty, and danger coefficient is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model relates to a stockbridge damper for overhead line, this stockbridge damper's dead lever carries out zonulae occludens with transmission line, reduces wind-force and strikes the stockbridge damper, and the position phenomenon of running appears, can also effectively solve the stockbridge damper to the damage on circuit surface simultaneously.

The utility model provides a stockbridge damper for overhead line, this stockbridge damper include stockbridge damper body and stockbridge damper dead lever, the centre of dead lever has the stiff end, the lower extreme of stiff end has the connecting rod, and this connecting rod links to each other with the stockbridge damper body, has installed fixed slot in the through-hole of stiff end both sides, fixed pipeline has been installed in the through-hole of stiff end both sides, fixed pipeline intermediate position has the external screw thread, has fixing device on this external screw thread, fixed pipeline has circular arc fixed latch on being connected one side with the stiff end, fixed pipeline's opposite side has a plurality of breachs, has the metal shrapnel of outside extension on the pipeline of this breach bottom. The transmission line penetrates through the fixed pipeline and the fixed end, the fixing device is rotated, the metal elastic sheet on the fixed pipeline is pressed on the transmission line, and the vibration damper is fixed on the transmission line.

Furthermore, the metal elastic sheet becomes thicker gradually from the extending direction of the notch.

Furthermore, the metal elastic sheet and the inner side of the fixed pipeline are provided with anti-skid grains, and the power transmission line is installed in the fixed pipeline through the anti-skid grains.

Further the fixing device comprises a pipe and a rotating nut mounted at the bottom of the pipe, the rotating nut having an internal thread on its inside.

Furthermore, the pipeline and the metal elastic sheet on one side of the fixed pipeline are pressed in the gap of the fixed pipeline.

Furthermore, the internal thread of the rotating nut is connected with the external thread of the fixed pipeline.

Further, the fixed pipeline is installed in the fixed end with the fixed clamping groove through the arc fixed clamping teeth, so that the fixed pipeline is movably connected with the fixed end.

The beneficial effects of the utility model reside in that, on passing through fixing device installation power transmission line with the metal shrapnel of the fixed pipeline of stockbridge damper dead lever both sides, metal shrapnel's inboard has anti-skidding line, can carry out stable connection with transmission line. Secondly, the fixed end is movably connected with the fixed pipeline, so that the damage to the surface of the power transmission line can be avoided when the shockproof hammer is used.

Drawings

FIG. 1 is a schematic view of the overall structure of a shockproof hammer for an overhead line;

FIG. 2 is a schematic structural view of a shockproof hammer fixing rod of a shockproof hammer for an overhead line;

FIG. 3 is a schematic view of the structure of a shockproof hammer fixing pipeline for an overhead line of the present invention;

fig. 4 is a schematic structural view of a shockproof hammer fixing device for an overhead line of the utility model;

fig. 5 is a schematic structural view of the fixed end of the vibration damper for an overhead line.

In the figure: 1. a shockproof hammer body; 2. a shockproof hammer fixing rod; 3. a fixed end; 4. a connecting rod; 5. fixing the clamping groove; 6. fixing the pipeline; 7. a fixing device; 8. the clamping teeth are fixed by circular arcs; 9. a metal spring sheet; 10. the nut is turned.

Detailed Description

The following describes in detail a specific embodiment of a utility model of a stockbridge damper for an overhead line with reference to the drawings.

As shown in fig. 1, the utility model provides a stockbridge damper for overhead line, this stockbridge damper include stockbridge damper body 1 and stockbridge damper dead lever 2, as shown in fig. 2, the centre of dead lever has stiff end 3, the lower extreme of stiff end 3 has connecting rod 4, and this connecting rod 4 links to each other with stockbridge damper body 1, has installed fixed slot 5 in the through-hole of stiff end 3 both sides, fixed pipeline 6 has been installed in the through-hole of stiff end 3 both sides, fixed pipeline 6 intermediate position has the external screw thread, has fixing device 7 on this external screw thread, fixed pipeline 6 is connected one side with stiff end 3 and has circular arc fixed latch 8, the opposite side of fixed pipeline 6 has and has a plurality of breachs, has outside extension's metal shrapnel 9 on the pipeline of this breach bottom. The transmission line passes through the fixed pipeline 6 and the fixed end 3, the fixing device 7 is rotated, the metal elastic sheet 9 on the fixed pipeline 6 is pressed on the transmission line, and the vibration damper is fixed on the transmission line.

According to the above, the metal elastic sheet 9 becomes thicker gradually from the extending direction of the notch.

According to the above, the metal elastic sheet 9 and the inner side of the fixed pipeline 6 are provided with anti-skid grains, and the power transmission line is installed in the fixed pipeline 6 through the anti-skid grains.

As shown in fig. 4, wherein the fixing device 7 comprises a pipe and a rotating nut 10, the rotating nut 10 is installed at the bottom of the pipe, and the inside of the rotating nut 10 has an internal thread.

According to the above, the metal elastic sheet 9 on one side of the fixed pipe 6 and the pipe is pressed in the gap of the fixed pipe 6.

According to the above, wherein the internal thread of the swivel nut 10 is interconnected with the external thread of the fixed pipe 6.

As shown in fig. 5 and 3, the fixed pipe 6 is mounted in the fixed end 3 with the fixed clamping groove 5 through the circular arc fixed clamping tooth 8, so that the fixed pipe 6 is movably connected with the fixed end 3.

The working principle of the shockproof hammer for the overhead line is as follows: the power transmission line penetrates through the fixed pipeline 6 and the fixed end 3, the rotating nut 10 at the lower end of the fixing device 7 is manually rotated, and the pipeline of the fixing device 7 moves towards one side of the metal elastic sheet 9. The metal shrapnel 9 is pressed in the lower notch under the action of the pipeline of the fixing device 7, and the metal shrapnel 9 is provided with anti-skid lines on the inner side, so that the metal shrapnel 9 is tightly connected with the power transmission line, the fixed pipeline 6 is installed on the power transmission line, and the shockproof hammer is fixed on the power transmission line. Fixed pipeline 6 carries out swing joint with stiff end 3, has increased the area of contact of stockbridge damper dead lever 2 with transmission line, when making transmission line receive down pressure, stockbridge damper dead lever 2 can effectually slow down the pressure that the transmission line epidermis received, avoids transmission line to receive the damage.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a stockbridge damper for overhead line, its characterized in that, this stockbridge damper include stockbridge damper body and stockbridge damper dead lever, the centre of dead lever has the stiff end, the lower extreme of stiff end has the connecting rod, and this connecting rod links to each other with the stockbridge damper body, has installed fixed slot in the through-hole of stiff end both sides, fixed pipeline has been installed in the through-hole of stiff end both sides, fixed pipeline intermediate position has the external screw thread, has fixing device on this external screw thread, fixed pipeline has circular arc fixed latch on being connected one side with the stiff end, fixed pipeline's opposite side has a plurality of breachs, has the metal shrapnel of outside extension on the pipeline of this breach bottom.

2. The stockbridge damper for an overhead line of claim 1, wherein the metal dome is gradually thicker from the extending direction of the notch.

3. The stockbridge damper for overhead lines of claim 2, wherein the metal spring and the inner side of the fixed pipeline have anti-slip lines, and the power transmission line is installed in the fixed pipeline through the anti-slip lines.

4. Stockbridge damper for overhead lines according to claim 1, characterized in that the fixing means comprise a pipe and a swivel nut mounted at the bottom of the pipe, the swivel nut having an internal thread on its inside.

5. The stockbridge damper for overhead lines of claim 4, wherein the metal clips on one side of the fixed pipe and the pipe press against the notches of the fixed pipe.

6. Stockbridge damper for overhead lines according to claim 4, characterized in that the internal thread of the swivel nut is interconnected with the external thread of the fixed pipe.

7. The stockbridge damper for overhead lines of claim 1, wherein the fixed pipe is installed in the fixed end having the fixing groove by a circular arc fixing latch so that the fixed pipe is movably connected to the fixed end.