US 11,891,775 B2
Work machinery
Takaaki Chiba, Ibaraki (JP); and Kento Kumagai, Ibaraki (JP)
Assigned to HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
Appl. No. 17/436,445
Filed by HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
PCT Filed Aug. 7, 2020, PCT No. PCT/JP2020/030336
§ 371(c)(1), (2) Date Sep. 3, 2021,
PCT Pub. No. WO2021/059776, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-176682 (JP), filed on Sep. 27, 2019.
Prior Publication US 2022/0186470 A1, Jun. 16, 2022
Int. Cl. E02F 9/20 (2006.01); E02F 9/26 (2006.01); E02F 9/24 (2006.01); E02F 3/43 (2006.01)
CPC E02F 9/2033 (2013.01) [E02F 3/435 (2013.01); E02F 9/24 (2013.01); E02F 9/26 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A work machinery comprising:
a work implement as a work front;
a detection device configured to detect an obstacle around the work machinery; and
a controller configured to control an operation of at least the work implement,
wherein:
the controller has a driving assistance function and a work assistance function, the driving assistance function being adapted to, when an obstacle detected by the detection device is in a preset monitoring range, decelerate the work implement or alert an operator, or perform both, and the work assistance function being adapted to prevent the work implement from deviating from a preset work range,
the work assistance function is switchable between enabled and disabled, and
when the work assistance function is switched to enabled, the controller is configured to, for an obstacle detected in the monitoring range but outside of the work range, suppress the driving assistance function in comparison with when the work assistance function is switched to disabled.