×

Crawler crane car body weight supporting device

  • US 10,618,781 B2
  • Filed: 02/08/2016
  • Issued: 04/14/2020
  • Est. Priority Date: 02/10/2015
  • Status: Active Grant
First Claim
Patent Images

1. A car body weight supporting device for a crawler crane including:

  • a lower travelling body;

    an upper slewing body slewably mounted on the lower travelling body;

    an attachment having a proximal end supported on a front portion of the upper slewing body in a raisable and lowerable manner; and

    a counter weight disposed on a rear portion of the upper slewing body, the lower travelling body having a pair of left and right crawler frames each carrying a crawler, a car body connecting the crawler frames and supporting the upper slewing body, and a pair of car body weights disposed on front and rear sides of the car body, the car body weight supporting device comprising;

    a supporting mechanism for movably supporting at least one of the paired car body weights; and

    a drive section for moving the car body weight supported by the supporting mechanism to thereby shift a center of gravity of the lower travelling body in a front and rear direction.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×