Crawler crane car body weight supporting device
First Claim
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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.
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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.
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Citations
6 Claims
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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 Dependent Claims (2, 3, 4, 5, 6)
- a lower travelling body;
Specification