HYDRAULIC ROTATING APPARATUS Russian patent published in 2022 - IPC B66C1/68 

FIELD: hydraulics.

SUBSTANCE: invention relates to gripping apparatuses for cranes. The hydraulic rotating apparatus comprises a first fastening part (12) for connection with the crane boom and a second fastening part (13) for connection with the working tool; and a stator (14) and a rotor (15). The rotor (15) is configured to rotate inside the stator (14) in order to rotate around the longitudinal axis (A), and comprises blades (18) are displaced with passage in the radial direction beyond said rotor (15). The stator (14) comprises an inner circular surface (25) for accommodating said blades (18). The inner circular surface (25) comprises at least two chambers (19a) configured to accommodate each blade from said blades (18) in a first dimension, and at least two shallow sections (19b) configured to accommodate each blade from said blades (18) in a second dimension significantly smaller compared to said first dimension. The inner circular surface (25) is configured to accommodate at least the end part of the blades (18) along the entire periphery thereof.

EFFECT: accuracy and good stability relative to external loads acting on the hydraulic rotating apparatus are achieved.

6 cl, 14 dwg