SWING DEVICE OF EVACUATOR HAVING ANTI-SLIDING DEVICE
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United States of America Patent
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Issued Date -
Jun 4, 2015
app pub date -
Nov 11, 2013
filing date -
May 6, 2013
priority date (Note) -
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Abstract
A swing device of an excavator has a brake channel connected to a hydraulic chamber of a brake piston, a select valve for connecting the brake channel to a brake hydraulic port or a delay channel, a spring compartment channel connected to a spring compartment and one point of the delay channel, a check valve to allow a hydraulic pressure to be supplied only in a direction from the delay channel toward the spring compartment, a spring compartment bypass channel for connecting one point of the spring compartment channel and one point of the spring compartment channel, an anti-sliding valve to block or open the spring compartment bypass channel, a slope detection sensor provided at one side of the excavator to sense a slope, and an anti-sliding valve controller for blocking or opening the anti-sliding valve based on slope information of the slope detection sensor.
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