Transportation vehicle
Number of patents in Portfolio can not be more than 2000
United States of America
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Sep 19, 2017
Issued Date -
Sep 14, 2017
app pub date -
Jan 19, 2017
filing date -
Jan 19, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
An object is to restrain a hoist shaft and a bushing of a hoist cylinder from abrading. A haulage vehicle with a pivoting vessel has a telescoping hoist cylinder provided between the vessel and the vehicle. Supply of hydraulic oil to the hoist cylinder is controlled by a valve provided between the hydraulic power source and the hoist cylinder. The haulage vehicle is provided with a bushing at one end portion of the hoist cylinder; a hoist shaft is mounted in a through bore of the bushing; a lubricant supplier supplies lubricant to a clearance between a surface of the hoist shaft and an internal surface of the through bore of the bushing; and when the vessel is seated on the vehicle, a controller controls the valve to make the hoist cylinder contract and also supply lubricant to the clearance.
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