Hydraulic excavator and method for measuring stroke of hydraulic cylinder of hydraulic excavator
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United States of America Patent
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Aug 25, 2015
Grant Date -
Mar 5, 2015
app pub date -
Feb 27, 2013
filing date -
Jan 18, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hydraulic excavator includes a base body portion, a movable portion, a hydraulic cylinder, a position sensor, a rotary encoder, and a control unit. The rotary encoder includes a light emitting unit, a light receiving unit, and a disk unit having a plurality of transmission portions. The control unit measures the stroke length of the hydraulic cylinder by correcting deviation of the stroke length, which is measured by the position sensor, based on the pulse signal output from the rotary encoder. In this way, there can be obtained a hydraulic excavator capable of precisely measuring a stroke length of a hydraulic cylinder driving a work implement, as well as a method for measuring the stroke of the hydraulic cylinder of the hydraulic excavator.
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International Classification(s)
- G01M:TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR S....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- F15B:SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUI....
- G01B:MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIME....
- G01D:MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VAR....
- E02F:DREDGING; SOIL-SHIFTING
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