Mikisadoramu drive unit

摘要

PROBLEM TO BE SOLVED: To provide a mixer drum driving device having a fluid pressure motor that smoothly stops a mixer drum.;SOLUTION: A mixer drum driving device is configured such that a mixer drum 1 is rotationally driven by an oil hydraulic motor (a fluid pressure motor) 81. The device includes first/second supply/discharge passages 51, 52 that supply/discharge operating oil to/from the oil hydraulic motor 81. The device also includes a motor load pressure relief passage 21 that relieves the load pressure of operating fluid, generated in a volume chamber of the fluid pressure motor 81, to the low-pressure side through one of the first/second supply/discharge passages 51, 52 when the drive of the fluid pressure motor 81 is stopped after a command to stop the drive of the mixer drum 1 is issued.;COPYRIGHT: (C)2013,JPO&INPIT