Shovel

Patent metadata

Field	Value
Publication number	US-2022010522-A1
Application number	US-202117448910-A
Country	US
Kind code	A1
Filing date	Sep 27, 2021
Priority date	Mar 29, 2019
Publication date	Jan 13, 2022
Grant date	—

Abstract

A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, an attachment attached to the upper turning body, an attachment actuator configured to move the attachment, and processing circuitry configured to assist an operator so that a level difference between two adjacent finished surfaces becomes equal to or less than a predetermined value.

First claim

1 . A shovel comprising:
a lower traveling body; an upper turning body turnably mounted on the lower traveling body; an attachment attached to the upper turning body; an attachment actuator configured to move the attachment; and processing circuitry configured to assist an operator so that a level difference between two adjacent finished surfaces becomes equal to or less than a predetermined value.

2 . The shovel according to claim 1 , wherein the processing circuitry is configured to move a predetermined portion of the attachment along a target trajectory that is set based on a designed surface, and to adjust a height of the target trajectory when the level difference is more than the predetermined value.

3 . The shovel according to claim 1 , wherein the processing circuitry is configured to cause information about the level difference to be displayed.

4 . The shovel according to claim 1 , wherein the processing circuitry is configured to, in response to determining that a distance between two finished surface portions arranged across an unfinished sloped surface portion from each other is less than the predetermined value is less than the predetermined value, calculate the difference between a height of a finished surface of one of the two sloped surface portions and a height of a finished surface of the other of the two sloped surface portions.

5 . The shovel according to claim 1 , wherein the processing circuitry is configured to cause an actuator to autonomously move so as to form three or more consecutive finished surfaces of increasing or decreasing height in a stepwise manner.

6 . The shovel according to claim 1 , wherein at least one of the two adjacent finished surfaces is incomplete.

7 . The shovel according to claim 1 , wherein the two adjacent finished surfaces are portions of a sloped surface or portions of a surface of a foundation on which a pavement material is to be laid.

8 . The shovel according to claim 1 , wherein the processing circuitry is configured to output a warning in response to detecting that the level difference is more than the predetermined value.

9 . The shovel according to claim 1 , wherein the attachment actuator includes a hydraulic cylinder, and
the processing circuitry is configured to cause the hydraulic cylinder to autonomously extend or retract so that the level difference becomes equal to or less than the predetermined value.

10 . A shovel comprising:
a lower traveling body; an upper turning body turnably mounted on the lower traveling body; an attachment attached to the upper turning body; an attachment actuator configured to move the attachment; and processing circuitry configured to calculate a magnitude of a level difference between two adjacent finished surfaces.

11 . The shovel according to claim 1 , wherein the processing circuitry is configured to control the attachment so that the level difference becomes equal to or less than the predetermined value.

12 . The shovel according to claim 1 , wherein the predetermined value is less than an allowable error.

13 . The shovel according to claim 1 , wherein the processing circuitry is configured to calculate a magnitude of the level difference between the two adjacent finished surfaces, based on an already formed finished surface.

14 . The shovel according to claim 1 , wherein the processing circuitry is configured to calculate a magnitude of the level difference between the two adjacent finished surfaces, based on a difference in height between an already famed finished surface and a designed surface.

15 . The shovel according to claim 1 , wherein the two adjacent finished surfaces include a finished surface famed with a height different from a height of the designed surface so formed as to have the level difference equal to or less than the predetermined value.

16 . The shovel according to claim 1 , wherein the two adjacent finished surfaces include a finished surface famed at a position higher than the designed surface so famed as to have the level difference equal to or less than the predetermined value.

Assignees

• Sumitomo Construction Machinery Co Ltd

Inventors

• Shiratani Ryuji
• Kurokawa Tomoki

Classifications

• E02F9/205

  Remotely operated machines, e.g. unmanned vehicles (E02F3/8866 takes precedence) · CPC title

• E02F3/437

  providing automatic sequences of movements, e.g. linear excavation, keeping dipper angle constant · CPC title

• E02F9/2054

  Fleet management · CPC title

• E02F9/2228

  including an electronic controller · CPC title

• E02F9/2235

  including an electronic controller · CPC title