Mixer drum driving apparatus

Patent metadata

Field	Value
Publication number	US-9694683-B2
Application number	US-201214006791-A
Country	US
Kind code	B2
Filing date	Mar 12, 2012
Priority date	Mar 24, 2011
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A mixer drum driving apparatus having a mixer drum carried on a frame of a mixer truck to be free to rotate and a drive source configured to drive the mixer drum to rotate includes a rotary motor configured to drive the mixer drum to rotate as the drive source, a power supply configured to supply power to the rotary motor, and a power generator configured to generate power as the mixer drum rotates and charge the generated power to the power supply.

First claim

The invention claimed is:

1. A mixer drum driving apparatus for driving a mixer drum carried on a frame of a mixer truck to be free to rotate, the mixer drum driving apparatus comprising:
a first hydraulic pump configured to be driven to rotate by an engine of the mixer truck;
a hydraulic motor configured to be driven by a working fluid discharged from the first hydraulic pump, the hydraulic motor being configured to drive the mixer drum to rotate;
a rotary motor provided separately from the engine of the mixer truck, and configured to drive the hydraulic motor;
a power supply configured to supply power to the rotary motor;
a power generator connected to the mixer drum so that a rotation of the mixer drum directly causes the power generator to generate power, the power generator being connected to the power supply via a charging circuit and always charging the generated power to the power supply while the mixer drum is rotating; and
an alternator other than the power generator, the alternator being configured to generate power as the engine of the mixer truck rotates, and charge the power supply,
wherein the power generator comprises
a rotor which contacts an outer periphery of the mixer drum to be rotated by the rotation of the mixer drum, and
an input shaft coupled to the rotor, and

the power generator is configured to generate power when the input shaft is rotated via the rotor.

2. The mixer drum driving apparatus as defined in claim 1 , further comprising:
a second hydraulic pump configured to be driven to rotate by the rotary motor;
wherein the hydraulic motor is further configured to be driven by a working fluid discharged from the second hydraulic pump.

3. The mixer drum driving apparatus as defined in claim 1 , further comprising:
a transmission provided between the input shaft of the power generator and the rotor.

4. A mixer truck, comprising:
a frame;
a mixer drum supported on the frame to be free to rotate;
a first hydraulic pump configured to be driven to rotate by an engine of the mixer truck;
a hydraulic motor configured to be driven by a working fluid discharged from the first hydraulic pump, the hydraulic motor being configured to drive the mixer drum to rotate;
a rotary motor provided separately from the engine of the mixer truck, and configured to drive the hydraulic motor;
a power supply configured to supply power to the rotary motor;
a power generator connected to the mixer drum so that a rotation of the mixer drum directly causes the power generator to generate power, the power generator being connected to the power supply via a charging circuit and always charging the generated power to the power supply while the mixer drum is rotating; and
an alternator other than the power generator, the alternator being configured to generate power as the engine of the mixer truck rotates, and charge the power supply,
wherein the power generator comprises:
a rotor which contacts an outer periphery of the mixer drum to be rotated by the rotation of the mixer drum; and
an input shaft coupled to the rotor, and

the power generator is configured to generate power when the input shaft is rotated via the rotor.

5. The mixer truck as defined in claim 4 , further comprising:
a second hydraulic pump configured to be driven to rotate by the rotary motor;
wherein the hydraulic motor is further configured to be driven by a working fluid discharged from the second hydraulic pump.

6. The mixer truck as defined in claim 4 , further comprising:
a transmission provided between the input shaft of the power generator and the rotor.

7. The mixer truck as defined in claim 6 , wherein the rotor is disposed on the frame.

Assignees

• Takahashi Yoshimitsu
• Tanaka Kazunori
• Kyb Corp

Inventors

• Takahashi Yoshimitsu
• Tanaka Kazunori

Classifications

• B28C5/4213 Primary

  Hydraulic drives (B28C5/4217 takes precedence) · CPC title

• F16H61/4139

  Replenishing or scavenging pumps, e.g. auxiliary charge pumps · CPC title

• B60L1/003 Primary

  to auxiliary motors, e.g. for pumps, compressors · CPC title

• B60R16/0307

  using generators driven by a machine different from the vehicle motor · CPC title

• Y02T10/90

  Energy harvesting concepts as power supply for auxiliaries' energy consumption, e.g. photovoltaic sun-roof · CPC title