Crawler crane car body weight supporting device
AssigneeKobelco Construction Machinery Co., Ltd.
InventorKazuyuki MIYAZAKI
Life of this patent
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Abstract
In a car body, a lower travelling body of a crawler crane includes a pair of left and right crawler frames, the car body connecting the crawler frames and supporting an upper slewing body, and a pair of car body weights are disposed on front and rear sides of the car body. The car body supporting device includes 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. The car body weight supporting device can improve postural stability.
Claims6
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.
Dependencies are inferred from the claim text.