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Shock absorbing damper for tension tower of transmission line and its installation structure

A technology of shock absorption and damping, transmission lines, applied in mechanical vibration damping devices, adjusting/maintaining mechanical tension, etc., can solve problems such as changing the dynamic characteristics of transmission towers, achieve good energy dissipation and shock absorption, easy installation, and reduce impact loads. Effect

Active Publication Date: 2021-06-04
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a shock-absorbing damper and its installation structure for a transmission line tension tower, so as to solve the problem that the shock-absorbing structure in the prior art needs to change the dynamic characteristics of the transmission tower itself and is only suitable for transmission lines that have not yet been built. problems, to achieve the purpose of not changing the dynamic characteristics of the transmission tower itself, and having strong shock absorption applicability

Method used

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  • Shock absorbing damper for tension tower of transmission line and its installation structure
  • Shock absorbing damper for tension tower of transmission line and its installation structure
  • Shock absorbing damper for tension tower of transmission line and its installation structure

Examples

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Effect test

Embodiment 1

[0034]A shock-absorbing damper for a tension tower of a power transmission line, comprising an outer cylinder 9, characterized in that a number of wedge-shaped metal outer rings 7 and wedge-shaped metal inner rings 8 that match each other are arranged in the outer cylinder 9 along the axis direction, and the wedge-shaped metal inner rings 8 The metal inner ring 8 is located inside the wedge-shaped metal outer ring 7, and there is a gap between two adjacent wedge-shaped metal outer rings 7 or / and the wedge-shaped metal inner ring 8, and a stopper 15 is distributed along the axial direction in the outer cylinder 9 . Pressing and holding mechanism, the stopper 15 is used to block the wedge-shaped metal outer ring 7 and the wedge-shaped metal inner ring 8, and the described holding mechanism is used to apply the wedge-shaped metal outer ring 7 and the wedge-shaped metal inner ring 8 along the outer cylinder 9. force in the axial direction.

[0035] The present invention considers ...

Embodiment 2

[0037] A shock-absorbing damper for a tension tower of a power transmission line. On the basis of Embodiment 1, the holding mechanism includes a main shaft 16 with one end inserted into the outer cylinder 9, and an extrusion wedge 11 is sleeved on the main shaft 16. The extrusion wedge 11 is adjacent to the wedge-shaped metal outer ring 7 and the wedge-shaped metal inner ring 8, and the side of the extrusion wedge 11 away from the wedge-shaped metal outer ring 7 and the wedge-shaped metal inner ring 8 is provided with a stopper 14, The main shaft 16 passes through the block 2 14 , and the main shaft 16 is also sleeved with a fastener 12 , and the fastener 12 presses the extruding wedge 11 . A matched sliding wedge 13 is provided outside the extrusion wedge 11 , and the sliding wedge 13 is engaged with the extrusion wedge 11 . It also includes a spring 10 sheathed on the main shaft 16 , and the spring 10 is located between the first block 15 and the second block 14 . The end o...

Embodiment 3

[0041] An installation structure for a shock-absorbing damper of a tension tower of a power transmission line, comprising a tension tower 1, a cross-arm 2 of the tension tower is arranged on the tension tower 1, and two ends of the shock-absorbing damper 6 are connected to the cross-arm of the tension tower respectively. Bear 2 ends, insulator string 3 connections. The wire 5 and the ground wire 4 are stretched between adjacent transmission towers through insulator strings 3 . The two ends of the shock-absorbing damper 6 are respectively hinged to the ends of the cross-arm 2 of the tension tower and the insulator string 3 through spherical joints.

[0042] Under the earthquake, the tension tower 1 and its cross arm will be displaced, and then the wire 5 and the ground wire 4 will be stretched, and the adjacent tension tower 1 connected to it will generate an impact load; and the impact load will be reduced through the installation. After the damper 6 is shaken, the damper 6 i...

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Abstract

The invention discloses a shock-absorbing damper for a tension tower of a power transmission line and an installation structure thereof. The shock-absorbing damper includes an outer cylinder, and inside the outer cylinder are arranged a plurality of matching wedge-shaped metal outer rings and wedge-shaped metal inner rings along the axial direction. The metal inner ring is located on the inner side of the wedge-shaped metal outer ring, and there is a gap between two adjacent wedge-shaped metal outer rings or / and the wedge-shaped metal inner ring, and the stoppers are distributed along the axis direction in the outer cylinder. It is used to block the wedge-shaped metal outer ring and the wedge-shaped metal inner ring, and the pressing mechanism is used to apply force along the axial direction of the outer cylinder to the wedge-shaped metal outer ring and the wedge-shaped metal inner ring. The purpose of the present invention is to provide a shock-absorbing damper and its installation structure for a transmission line tension tower, so as to solve the problem that the shock-absorbing structure in the prior art needs to change the dynamic characteristics of the transmission tower itself and is only suitable for transmission lines that have not yet been built. problems, and achieve the purpose of not changing the dynamic characteristics of the transmission tower itself and having strong applicability for shock absorption.

Description

technical field [0001] The invention relates to the field of power transmission line towers, in particular to a shock absorbing damper for a power transmission line tension tower and an installation structure thereof. Background technique [0002] Electricity plays a pivotal role in national economic construction. The transmission tower is an important part of the power transmission system, the carrier of load electric energy transmission, and an important lifeline structural engineering. It is different from general civil engineering structures, and has the common characteristics of tower-like towering structure and long-span structure, such as high tower structure, large span, strong flexibility, etc. The most notable feature is that it is connected by wires to each transmission tower. It forms a continuous continuous body, which is sensitive to disaster loads such as earthquakes, and is prone to damage and collapse under the action of disaster loads. [0003] Common tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/14H02G7/02
CPCH02G7/02H02G7/14
Inventor 卜祥航曹永兴谢强吴驰朱军刘凤莲薛志航
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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