Mixer drum driving apparatus
AssigneeKayaba Industry Co., Ltd.
InventorYoshimitsu Takahashi
Life of this patent
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Abstract
A mixer drum driving apparatus includes an auxiliary fluid pressure pump that is provided independently of a fluid pressure pump and is capable of supplying a working fluid to a fluid pressure motor so as to cause a mixer drum to perform agitation rotation, a plurality of motors configured to drive the auxiliary fluid pressure pump to rotate, and a control unit that controls rotation of the mixer drum. When an engine is stopped during the agitation rotation of the mixer drum, the control unit drives the auxiliary fluid pressure pump to rotate by operating the plurality of motors selectively in accordance with a load of the mixer drum.
Claims10
A mixer drum driving apparatus having a mixer drum carried on a frame of a concrete mixer truck to be free to rotate, a fluid pressure motor that drives the mixer drum to rotate, and a fluid pressure pump that is driven by power from an engine of the concrete mixer truck in order to supply a working fluid to the fluid pressure motor, comprising:
- at least one auxiliary fluid pressure pump that is provided independently of the fluid pressure pump and is capable of supplying the working fluid to the fluid pressure motor so as to cause the mixer drum to perform agitation rotation;
- a plurality of motors configured to drive the auxiliary fluid pressure pump to rotate;
- and
- a control unit that controls rotation of the mixer drum,
- wherein, when the engine is stopped during the agitation rotation of the mixer drum, the control unit drives the auxiliary fluid pressure pump to rotate by operating the plurality of motors selectively in accordance with a load of the mixer drum.
Dependencies are inferred from the claim text.