Apparatus for improving the operating capability of a constructi

Details Apparatus for improving the operating capability of a constructi Apparatus for improving the operating capability of a constructi

1997-12-11

1999-09-14

Lopez, F. Daniel

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60429, F16D 3102

Patent

active

059504285

ABSTRACT:
Disclosed is an apparatus for increasing the operating capability of a construction machine during a fine operation mode and a method for the same. The apparatus being capable of preventing a merged hydraulic fluid from being supplied into a hydraulic actuator and increasing the pressure of the hydraulic fluid being supplied into the hydraulic actuator during the fine operation mode. The apparatus includes a detector that detects the RPM count of the engine of the construction machine and determines whether the engine is switched into the fine operation mode. A first anti-confluence valve and a second anti-confluence valve prevent a first hydraulic fluid supplied into the first actuator and a second hydraulic fluid supplied into the second actuator from merging while either the first actuator or the second actuator is operating. An anti-confluence relay turns the first anti-confluence valve and the second anti-confluence valve on/off. Finally, a controller turns the anti-confluence relay on/off in accordance with a signal generated by the detector.

REFERENCES:
patent: 5029067 (1991-07-01), Nishida et al.
patent: 5077973 (1992-01-01), Suzuki et al.

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