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Double-hoisting-point pole head clamp for replacing straight-line insulator of 220 kV line steel pipe pole in electrified mode

A technology for linear insulators and live replacement, which is applied in the field of load-bearing tools, can solve the problems of insulators and operating methods not being updated in time, difficulty in carrying out live operations, and inconvenient transportation, so as to improve the difficulty of installation and improve the reliability of power supply , the effect of improving safety

Inactive Publication Date: 2014-07-16
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The line of steel pipe pole has the advantages of beautiful appearance, small footprint, and not easy to lose the tower material, but it also has disadvantages such as high cost, inconvenient maintenance, and inconvenient transportation. It has been used in transmission lines in recent years, but not very widely. Such transmission lines are only erected in a few areas or when there are special needs
The insulation tools and operating methods used in the installation and maintenance of traditional live work have not been updated to the new standard in time
Especially when it is necessary to hang the lifting point on the head of the steel pipe rod cross-arm, because the steel pipe rod is similar to a rectangular parallelepiped, the head of the cross-arm is smooth and there is no installation hole, so it is difficult to carry out the live operation

Method used

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  • Double-hoisting-point pole head clamp for replacing straight-line insulator of 220 kV line steel pipe pole in electrified mode
  • Double-hoisting-point pole head clamp for replacing straight-line insulator of 220 kV line steel pipe pole in electrified mode

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0016] Such as figure 1 , 2 As shown, the present invention 220kV line steel pipe pole electrified replacement linear insulator used double lifting point rod head fixture includes: load-bearing upper beam 1 and fastening lower beam 2, the two sides of the load-bearing upper beam 1 are provided with two An equidistant adjustable long hole 3 is used to adjust the position where the fastening bolts need to be installed and adapt to the width of the steel pipe pole cross-arm head. A U-shaped groove 11 is respectively arranged at both ends of the load-bearing upper beam 1, and a hole 7 is arranged on both sides of the U-shaped groove 11. After the bolt 12 passes through the hole 7, it is fixed by a nut to form a tool suspension point. The tool suspension point is used to hang the insulated tool, which is the most stressed component in this fixture. The fastening lo...

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Abstract

The invention relates to a double-hoisting-point pole head clamp for replacing a straight-line insulator of a 220 kV line steel pipe pole in an electrified mode. The clamp comprises an upper force-bearing beam, a lower fastening beam and fastening bolts, wherein the upper force-bearing beam and the lower fastening beam are respectively provided with two long adjustable holes, the two ends of the upper force-bearing beam 1 are respectively provided with a U-shaped groove, the U-shaped grooves are connected with the bolts to form tool hanging points, the number of the fastening bolts is two, and the two fastening bolts respectively and sequentially penetrate through the long adjustable holes in the lower fastening beam and in the upper force-bearing beam to connect the upper force-bearing beam and the lower fastening beam together. The clamp can be used for an electrified line and is suitable for being used for all large-span steel pipe pole power transmission lines with a single wire or two wires, power supply reliability is improved, and universality is improved. The clamp is installed on the head of a cross arm of the steel pipe pole, the distance from the electrified wire to the ground and air gaps are effectively increased, the insulating coefficient and the insulating level of insulated tools and instruments are improved, and safety is improved.

Description

technical field [0001] The invention relates to a special load-bearing tool for live replacement of straight insulators on steel pipe rods of power transmission lines, in particular to a double-suspension rod head fixture for live replacement of straight insulators by steel pipe rods on 220kV lines. Background technique [0002] The line of steel pipe pole has the advantages of beautiful appearance, small footprint, and not easy to lose the tower material, but it also has disadvantages such as high cost, inconvenient maintenance, and inconvenient transportation. It has been used in transmission lines in recent years, but not very widely. Such transmission lines are only erected in a few areas or when there are special needs. The insulation tools and operating methods used in the installation and maintenance of traditional live work have not been updated to the new standard in time. Especially when it is necessary to hang the lifting point at the head of the steel pipe rod c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
Inventor 张森马宁宋丽雷宏阳朱海荣于春宏袁一文曲家波薛丽敏
Owner STATE GRID CORP OF CHINA
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