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United States of America Patent

PATENT NO 12012725
APP PUB NO 20210189690A1
SERIAL NO

17273844

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Provided is a loading work vehicle capable of improving work efficiency even when working on a slippery road surface. An HST-traveling-drive wheel loader 1 comprises a step-on amount detection sensor 610, a discharge pressure detection sensor 75, a mode switch device 60, and a controller 5. The controller 5 is configured to: determine whether a limit mode is selected by the mode switch device 60; specify an operation state of the wheel loader 1 when determining that the limit mode is selected; limit maximum traction force to a first set value which is set based on a static friction coefficient μ and vehicle weight when specifying that a bucket 23 is pushed into a natural ground 100; and increase the maximum traction force from the first set value when specifying that excavation of the natural ground 100 is started.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
HITACHI CONSTRUCTION MACHINERY CO LTD16-1 HIGASHIUENO 2-CHOME TAITO-KU TOKYO 1100015 ?1100015

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hyodo, Koji Kasumigaura, JP 57 360
Nukii, Masaki Ushiku, JP 11 22
Tanaka, Tetsuji Abiko, JP 103 812
Yoshikawa, Masaki Kasama, JP 51 262

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