OVERLOAD PROTECTION CIRCUIT FOR EARTH REMOVAL PLATE OF HYDRAULIC SHOVEL

PROBLEM TO BE SOLVED: To provide a dozer device warning an operator that an overload works on a earth removal plate and thus preventing the breaking etc., of the device. SOLUTION: In a hydraulic shovel having an earth removal plate, a pressure detector is connected to the contraction side oil passag...

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Bibliographische Detailangaben
1. Verfasser:	KAJI SHUNJI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a dozer device warning an operator that an overload works on a earth removal plate and thus preventing the breaking etc., of the device. SOLUTION: In a hydraulic shovel having an earth removal plate, a pressure detector is connected to the contraction side oil passage of a blade cylinder 12 and the output of the pressure detector is connected to the input side of a controller 33. An alarm means 45 is connected to the output side of the controller 33. When recognizing the overloaded condition of the earth removal pate in accordance with detection data from the pressure detector, the controller 33 outputs an alarm signal to the alarm means 45 to cause the alarm means 45 to issue an alarm.