Patent ID: 9551385
Date: 2017-01-24
CPC Classifications: B28C,F15B,F16D

Claim:
1. A mixer drum driving device, comprising: a mixer drum rotatably mounted on a chassis of a mixer truck; a hydraulic motor configured to drive and rotate the mixer drum; a hydraulic pump configured to supply pressure oil to the hydraulic motor by being driven by an engine of the mixer truck; an auxiliary hydraulic pump configured to supply the pressure oil to the hydraulic motor independently of the hydraulic pump; a direct-current brush motor configured to drive and rotate the auxiliary hydraulic pump; a detector configured to detect an operation state of the engine; a controller configured to drive the direct-current brush motor to drive and rotate the auxiliary hydraulic pump, when the detector detects stop of the engine; and a selector configured to select a rotation mode of the mixer drum from a plurality of predetermined rotation modes, wherein the plurality of the predetermined rotation modes includes; the controller is further configured to drive the direct-current brush motor to drive and rotate the auxiliary hydraulic pump, only when the selector selects the mixing mode.