FIELD: lifting devices.
SUBSTANCE: invention relates to lifting devices. The device for moving the counterweight comprises a counterweight frame (10), connecting units (20), transmission units (30) and drive elements (40). The frame (10) of the counterweight is designed to be connected to the turntable (100), and the connecting unit (20) is made to be connected to the counterweight (200). The connecting unit (20) is pivotally connected to the counterweight frame (10), and the drive element (40) is fixed on the counterweight frame (10) and connected to the connecting unit (20) by means of the transmission unit (30) to ensure rotation of the connecting unit (20), thereby regulating the distance from the connecting unit (20) to the set reference point on the counterweight frame (10).
EFFECT: ensuring a change in the position of the counterweight (200) relative to the turntable (100) without changing the weight of the counterweight and thereby improving the lifting characteristics and stability of the crane.
10 cl, 2 dwg
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