All the existing lead screws in the power transmission field adopt the single-shaft drive mode,which is far from meeting the transfer requirements of large-span and large-tonnage force.In view of such problems,an in-depth research is conducted and proposes to replace the traditional single-shaft lead screw with the double-shaft drive mechanical labor-saving lead screw so as to increase the force tonnage of the lead screw,which meets the replacement requirements of insulators with large span and large force on ultra-high(extra-high)voltage lines.
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