US 11,746,497 B2
Shovel
Ryuji Shiratani, Chiba (JP); Hajime Aragaki, Chiba (JP); and Masaaki Yamamoto, Chiba (JP)
Assigned to SUMITOMO CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
Filed by SUMITOMO CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
Filed on Aug. 6, 2020, as Appl. No. 16/986,598.
Application 16/986,598 is a continuation of application No. PCT/JP2019/001295, filed on Jan. 17, 2019.
Claims priority of application No. 2018-022017 (JP), filed on Feb. 9, 2018.
Prior Publication US 2020/0362532 A1, Nov. 19, 2020
Int. Cl. E02F 3/43 (2006.01); E02F 3/32 (2006.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01)
CPC E02F 3/435 (2013.01) [E02F 3/32 (2013.01); E02F 9/2004 (2013.01); E02F 9/2033 (2013.01); E02F 9/2228 (2013.01); E02F 9/2267 (2013.01); E02F 9/2285 (2013.01); E02F 9/2292 (2013.01); E02F 9/2296 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A shovel comprising:
a traveling body;
a turning, body turnably mounted on the traveling body;
an attachment attached to the turning body and including a boom an arm, and a bucket;
an operating apparatus for operating the boom; and
a processor,
wherein the processor is configured to determine whether the shovel is in a state in which the traveling body is lifted, on the basis of a pressure of a rod-side hydraulic chamber of a boom cylinder for driving the boom,
wherein the processor is configured to relatively slow down an operation of the attachment in such a direction as to terminate the state in which the traveling body is lifted in response to determining that the shovel is in the state in which the traveling body is lifted,
wherein a flowrate of hydraulic oil supplied to the boom cylinder to drive the boom increases in accordance with an increase of an amount of operation of the operating apparatus, and
wherein the processor is configured to relatively reduce the flowrate of the hydraulic oil supplied to the boom cylinder in accordance with the amount of operation in a direction to raise the boom, in response to determining that the shovel is in the state in which the traveling body is lifted.