US 11,851,846 B2
Excavator
Jitsutaka Takeo, Chiba (JP); and Manabu Ito, Chiba (JP)
Assigned to SUMITOMO CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
Filed by SUMITOMO CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
Filed on Sep. 27, 2021, as Appl. No. 17/448,972.
Application 17/448,972 is a continuation of application No. PCT/JP2020/011969, filed on Mar. 18, 2020.
Claims priority of application No. 2019-069009 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0010527 A1, Jan. 13, 2022
Int. Cl. E02F 9/20 (2006.01); E02F 9/22 (2006.01)
CPC E02F 9/2041 (2013.01) [E02F 9/207 (2013.01); E02F 9/2029 (2013.01); E02F 9/2079 (2013.01); E02F 9/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An excavator comprising:
a lower traveling body;
an upper turning body turnably mounted to the lower traveling body;
a work attachment attached to the upper turning body;
an imaging device mounted to the upper turning body;
a hydraulic actuator;
a hydraulic pump configured to supply hydraulic oil to the hydraulic actuator;
an electric motor configured to drive the hydraulic pump;
an operation device of an electric type configured to operate the hydraulic actuator; and
a control device configured to control the electric motor,
wherein in response to determining that the operation device is not operated, the control device causes the hydraulic pump to automatically stop, and subsequently. in response to determining that an operation with respect to the operation device is started, the control device causes the hydraulic pump to be automatically activated, and
even when the operation with respect to the operation device is started after causing the hydraulic pump to automatically stop, in response to determining that a seat belt of an operator seat in the excavator is not worn, a window or a door of a cabin of the excavator is not closed, or an opening for maintenance in the excavator is not closed, the control device does not cause the hydraulic pump to be automatically activated.