SINGLE-MOTOR, DUAL-HYDRAULIC-CIRCUIT DRIVE SYSTEM FOR INDUSTRIAL MATERIALS-HANDLING VEHICLE AND METHOD FOR CONTROLLING THE SAME
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United States of America Patent
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Issued Date -
Apr 11, 2024
app pub date -
Oct 6, 2023
filing date -
Oct 6, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
A drive system for an industrial handling vehicle comprises an electric motor, a first pump, for example, a plunger pump, and a second pump, for example, a gear pump. The first pump is configured to provide hydraulic power for a travelling device of the industrial handling vehicle. The first pump and the travelling device are in a first hydraulic circuit. The second pump is configured to provide hydraulic power for a brake device and/or a steering device and/or a handling device of the industrial handling vehicle. The second pump, the brake device, the steering device, and the handling device are in a second hydraulic circuit isolated from the first hydraulic circuit. The electric motor is operatively coupled to both the first pump and the second pump, to drive them to operate.
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