US 12,077,945 B2
Operation assistance system for work machine having an extendable work area
Takaaki Chiba, Tsuchiura (JP); Shinya Imura, Tsuchiura (JP); Shinjiro Yamamoto, Tsuchiura (JP); Masamichi Ito, Tsuchiura (JP); and Koji Shiwaku, Tsuchiura (JP)
Assigned to Hitachi Construction Machinery Co., Ltd, Tokyo (JP)
Appl. No. 17/632,362
Filed by Hitachi Construction Machinery Co., Ltd., Tokyo (JP)
PCT Filed Mar. 25, 2020, PCT No. PCT/JP2020/013437
§ 371(c)(1), (2) Date Feb. 2, 2022,
PCT Pub. No. WO2021/192114, PCT Pub. Date Sep. 3, 2021.
Prior Publication US 2022/0282459 A1, Sep. 8, 2022
Int. Cl. E02F 9/24 (2006.01); E02F 9/26 (2006.01)
CPC E02F 9/24 (2013.01) [E02F 9/262 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An operation assistance system for a work machine comprising:
an operation assistance function of stopping a work machine when an object is detected in a stop area set in advance based on detection information from a detection device that detects an object around the work machine with a work implement; and
a work assistance function of preventing the work machine from going out of a work area set in advance based on attitude information of the work machine, wherein
both of the operation assistance function and the work assistance function are switchable between enabled and disabled states,
when the work assistance function is in an enabled state and when the work area is set outside of the stop area to surround the stop area, the operation assistance system sets the work area as the stop area such that the stop area is extended and overlaid on the work area, and automatically enables the operation assistance function when the operation assistance function is in a disabled state,
the work machine is one of a wheel loader, a crane, a bulldozer, a dump, or a road machine, and
the one of a wheel loader, a crane, a bulldozer, a dump, or a road machine is controlled in accordance with at least the operation assistance function and the work assistance function.