{
  "abstract": "An insulated telescopic arm and an insulated bucket arm vehicle. The insulated telescopic arm comprises an outer arm ( 1 ), an insulated inner arm ( 2 ) and a self-adjusting roller apparatus ( 3 ). The insulated inner arm ( 2 ) is limited in the outer arm ( 1 ) and can extend out of the outer arm ( 1 ) from a free end of the outer arm ( 1 ) along an axial direction. The self-adjusting roller apparatus ( 3 ) comprises a pressure cylinder ( 31 ) disposed on the outer arm ( 1 ), piston rods ( 32 )capable of moving up and down in the pressure cylinder ( 31 ), and roller assemblies ( 33 ) used to carry the insulated inner arm ( 2 ), there being at least two roller assemblies ( 33 ), and the roller assemblies ( 33 ) each comprising a roller shaft ( 331 ) and a roller body ( 332 ) used to carry the insulated inner arm ( 2 ) and rotatably sleeved on an outer side of the roller shaft ( 331 ). Two ends of the roller shaft ( 331 ) extending out of the roller body ( 332 ) are each correspondingly connected to a piston rod ( 32 ). Since a fluid medium in the pressure cylinder ( 31 ) provides an equal force to each piston rod ( 32 ), it can be ensured that the at least two roller components ( 33 ) are uniformly stressed, thereby greatly reducing the wear rate, and improving the service life and insulation performance of the insulated inner arm.",
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  "published_at": "2026-09-15T19:03:07.004717Z",
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  "source_date": "2026-04-16",
  "source_id": "US-2026103370-A1",
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  "title": "Insulated telescopic arm and insulated bucket arm vehicle",
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