Construction method for preventing erection of crossing frame by using overhead ground wire to perform pulley block hanging operation

A technology of overhead ground wire and construction method, which is applied in the direction of overhead line/cable equipment, etc., to achieve the effect of saving manpower and material resources, simple operation, and saving construction time.

Active Publication Date: 2015-03-04
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For these spanning places, many spanning frames need to be erected, and these spanning frames must be completed before the replacement of the conductor construction, requiring a lot of manpower and time.

Method used

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  • Construction method for preventing erection of crossing frame by using overhead ground wire to perform pulley block hanging operation
  • Construction method for preventing erection of crossing frame by using overhead ground wire to perform pulley block hanging operation
  • Construction method for preventing erection of crossing frame by using overhead ground wire to perform pulley block hanging operation

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Embodiment Construction

[0019] The steps of the present invention are as follows:

[0020] 1. First arrange the workers to cross the nearby pole tower, and hang the three-axis pulley block on the overhead ground on the pole tower. The three-axis pulley block consists of an upper pulley frame, an upper pulley set on the upper pulley frame, and a lower pulley frame. It is composed of two lower pulleys arranged side by side on the lower pulley frame, and the upper and lower pulley frames can rotate mutually, such as figure 1 with figure 2 As shown, the three-axis pulley block includes a rectangular ring-shaped bracket 1, a rotating shaft 2, a pulley 3, a pin shaft 4, a baffle plate 5, and a lock block 6. The ring-shaped bracket 1 has a side plate 11 and a bottom plate 12. The specific structure and patent number It is the same as "a three-axis pulley block" of "ZL201320399382.0"; the overhead ground wire is passed through the upper pulley of the three-axis pulley block; the two lower pulleys parallele...

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PUM

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Abstract

The invention discloses a construction method for preventing erection of a crossing frame by using an overhead ground wire to perform pulley block hanging operation. The method is simple in construction and safe to operate, can shorten the construction time and power failure time, is time-saving and labor-saving, and reduces the construction cost. The method comprises the following steps: first of all, arranging work personnel to climb a tower near a position in need of crossing to hang the triaxial pulley block on an overhead ground wire; making the two ends of each insulation rope vertical down to the ground, and the ground work personnel sliding the pulley block from the overhead wire to a crossover object by use of the insulation ropes vertical down to the ground; the ground work personnel binding a wire holder wheel, leading the two ends of each of the two insulation ropes out respectively from collars at the two sides of the wire holder wheel, lifting the wire holder wheel to a position distanced 100mm to 200mm away below a lead, encircling the lead, and at the same time, by use of a temporary ground anchor, binding the two ends of each of the two insulation ropes so as to maintain a certain height from the ground to reach a safety distance when the lead descends; and then, controlling the lead to swing from left to right and bounce by use of the insulation ropes so as to prevent contact with a lead at a same-tower parallel live-line side.

Description

technical field [0001] The invention relates to a construction method for avoiding the erection of a spanning frame by using an overhead ground wire to hang a block of pulleys. Background technique [0002] At present, the power system is developing rapidly, which brings many transmission line transformation projects. The most important thing is to replace the transmission line conductors in order to meet the user load, and the replacement of overhead conductors involves the crossing of many lines. For example: lines The bottom crosses transmission lines, low-voltage distribution lines, roads, rivers, housing buildings, etc. These spanning places need to build many spanning frames, and these spanning frames must be completed before the replacement of the conductor construction, requiring a lot of manpower and time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a construction method that uses overhead ground wi...

Claims

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Application Information

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IPC IPC(8): H02G1/02
Inventor 李卫民张凯吕大勇王军
Owner STATE GRID CORP OF CHINA
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