Lifting gear with concrete rod grounded downlead
A technology of grounding down conductors and concrete poles, which is applied to the installation of cables, cable installation devices, electrical components, etc., can solve the problems of low work efficiency, sinking, time-consuming, labor-intensive and labor-intensive problems, and reduce labor intensity and work efficiency. High and save human resources
Inactive Publication Date: 2012-05-30
NINGDONG POWER SUPPLY COMPANY OF STATE GRID NINGXIA ELECTRIC POWER
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Problems solved by technology
[0003] The concrete poles of 110kV~2200kV transmission lines are mainly in the form of double poles. When measuring, one side (retaining the other side) must be opened to measure the grounding downconductor. After the line has undergone geological changes and rainwater infiltration during operation, the backfill soil has subsided. It will give the grounding down-conductor a downward pull. When the grounding nut is opened, the grounding down-conductor will sink. After the grounding resistance measurement is completed, the height of the grounding down-conductor will drop, resulting in The bolt cannot be restored (tightened) to its original state
At present, two people must carry out this work at the same time, that is, after measuring the grounding resistance, an operator uses a thinner rope to tie a knot on the flat iron of the grounding down-conductor, and lifts the grounding down-conductor. , another operator restores (tighten the screw) the grounding down conductor, this method is time-consuming, laborious and labor-intensive, and the work efficiency is low
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Embodiment Construction
[0012] The lifting device of the concrete bar grounding down conductor of the present invention includes two ratchet wrenches 1 and a support column 2 made of round steel. Respectively weld a circular ring 7 at the two ends of each, adjust the position, make two ratchet spanners 1 symmetrically be located on and be fixed on the supporting column 2. Both ends of the support column 2 are symmetrically perforated, which will be used to pass around the steel wire rope 4, and a hole is respectively drilled in the center of the support column 2, for passing the hoisting wire rope 6. When in use, a wedge buckle 9 is worn around the steel wire rope 4, and the concrete rod 3 that surrounds the steel wire rope 4 is passed through the wedge buckle 9 to tie a knot. The flat iron 11 at the upper end of the downline is stuck, and the grounding downconductor 5 can be lifted by turning the ratchet wrench 1 (tighten the wire rope) until the screw hole 12 on the flat iron 11 corresponds to the ...
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The invention relates to lifting gear with a concrete rod grounded downlead, which is characterized by comprising a ratchet wrench and a support column, wherein the support column is arranged in the ratchet sleeve of the ratchet wrench in a penetrating mode; and the support column is fixed with a winding wire rope and a lifting wire rope, the winding wire rope can wind on the concrete rod, and the lifting wire rope is used for lifting the grounded downlead. The upper end of the lifting gear winds the winding wire rope on the concrete rod, the lower end of the lifting gear is connected to the flat iron of the grounded downlead through the lifting wire rope, and the grounded downlead can be lifted by rotating the ratchet wrench. By using the lifting gear, one person can measure the resistance value of a ground net, thereby saving the human resources, enhancing the working efficiency and greatly reducing the labor intensity.
Description
technical field [0001] The invention relates to a power transmission line maintenance tool, in particular to a lifting device for a concrete pole grounding down-conductor. Background technique [0002] The grounding down conductor is the bare metal conductor connecting the concrete pole body and the buried grounding grid. Its function is to facilitate the measurement of the resistance value of the grounding grid, and the measurement of the resistance value of the grounding grid is the main measurement item during the operation and acceptance of the transmission line. , the measurement cycle is once every 1 to 2 years according to the voltage level. [0003] The concrete poles of 110kV~2200kV transmission lines are mainly in the form of double poles. When measuring, one side (retaining the other side) must be opened to measure the grounding downconductor. After the line has undergone geological changes and rainwater infiltration during operation, the backfill soil has subside...
Claims
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IPC IPC(8): H02G1/00
Inventor 陈瑞白东刘雪军罗定武邵智文
Owner NINGDONG POWER SUPPLY COMPANY OF STATE GRID NINGXIA ELECTRIC POWER