Sawmill sledge cable winch - uses 2 hydraulic motor driving winch cable drum acting as pumps for supplying further hydraulic motor for brake

摘要

The cable winch has a drive motor (5) coupled to a hydraulic pump (28) which is connected in a hydraulic circuit also containing a central control unit (14) and hydraulic motors (26, 27, 30). The central control unit (14) comprises a distributor block (15) with bores for coupling the individual press lines (18..21). The winch drum (3) is rotated by 2 hydraulic motors (27, 27), which act as pumps during the generator mode of the cable winch, to supply press to a further hydraulic motor (30) in the central control unit (14) used for direct drive of a radial ventilator wheel (7) of a fan brake. ADVANTAGE - High tension and braking forces and high cable velocity.