| 摘要 |
A mixer drum driving device provided with a mixer drum, a hydraulic motor, a hydraulic pump, an auxiliary hydraulic pump that supplies hydraulic oil to the hydraulic motor independently from the hydraulic pump to cause the mixing rotation of the mixer drum, and a brushed DC electric motor that drives the rotation of the auxiliary hydraulic pump, wherein the mixing rotation of the mixer drum is driven by using the brushed DC electric motor to drive only the auxiliary hydraulic pump. |
