A kind of multi-stage expansion mechanism and engineering machinery

A kind of multi-stage expansion mechanism and engineering machinery

  • CN 106,185,652 A
  • Filed: 08/31/2016
  • Published: 12/07/2016
  • Est. Priority Date: 08/31/2016
  • Status: Active Application
First Claim
Patent Images

1. a multi-stage expansion mechanism, including:

  • Basic arm;

    At least two telescopic arm, its telescopically nested setting, and described at least two telescopic arm telescopically setPut in described basic arm;

    AndDriving means, it is used for driving described telescopic arm to do stretching motion relative to described basic arm,It is characterized in that,Described driving means is arranged on outside described telescopic arm.

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