Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1985-05-06
1987-03-17
Look, Edward K.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60424, 91520, 91532, 144208E, F16D 3102
Patent
active
046497064
ABSTRACT:
A hydraulic feed control system for log debarkers having three infeed and three outfeed rolls. Each roll is driven by its own hydraulic motor. Each infeed motor is connected in series with a corresponding outfeed motor whereby three pairs of motors are defined. The hydraulic fluid is pumped through a three way flow divider which divides the fluid equally to each of these pairs. Each of the motors has a special crossover relief with a directional flow control that will prevent the excessive pressure that may be created by one of the motors in the series from effecting the pressure to the other motors. The special relief is also provided with a direct line into the oil reservoir which if needed either of the motors in series may siphon oil from the reservoir through the directional flow control valve without affecting the other motor. The return line from the outfeed (down flow) motor joins a common return which is separate from the relief return to tank. When any of the motors for any reason is inadequately supplied with oil, the motor will act as a pump siphoning fluid from the tank. Additionally, any excess fluid flowing to a motor will drain through the relief system back to the tank. This system is also supplied with a separate return to reservoir.
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