US 12,031,302 B2
Excavator
Chunnan Wu, Kanagawa (JP); Yusuke Sano, Kanagawa (JP); and Yoshiyasu Itsuji, Kanagawa (JP)
Assigned to SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Jan. 29, 2020, as Appl. No. 16/775,389.
Application 16/775,389 is a continuation of application No. PCT/JP2018/028304, filed on Jul. 27, 2018.
Claims priority of application No. 2017-147669 (JP), filed on Jul. 31, 2017.
Prior Publication US 2020/0165799 A1, May 28, 2020
Int. Cl. G01S 19/42 (2010.01); E02F 3/65 (2006.01); E02F 9/20 (2006.01); E02F 9/24 (2006.01); E02F 9/26 (2006.01)
CPC E02F 9/262 (2013.01) [E02F 3/651 (2013.01); E02F 9/2033 (2013.01); E02F 9/2041 (2013.01); E02F 9/24 (2013.01); E02F 9/265 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An excavator comprising:
a lower traveling body;
an upper turning body equipped with an attachment, the upper turning body being mounted on the lower traveling body; and
a controller installed in the upper turning body, the controller being configured to
determine whether a predetermined article exists in a moving direction of the lower traveling body with respect to each of a forward direction and a backward direction of the lower traveling body based on information about terrain around the upper turning body, the predetermined article having a depth relative to a level of a ground at which the excavator is positioned,
set a restricted range for the predetermined article in response to determining that the predetermined article exists, and
restrict movement of the lower traveling body with respect to the restricted range set for the predetermined article.