# US 2020/0399862 A1 · Display system of turning work vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399862 A1 - Document ID: US20200399862A1 - Status: Published application - Kind: A1 - Application number: 16/979,256 - Filed: 2019-01-24 - Published: 2020-12-24 - Earliest claimed: 2018-03-22 - Assignees: Yanmar Power Technology Co., Ltd. - Applicants: Yanmar Power Technology Co., Ltd. - Inventors: Kohei Okazaki - Web page: https://patentgrep.com/patent/US20200399862A1 ## CPC - E02F 9/123: {Drives or control devices specially adapted therefor (E02F9/125 and E02F9/128 take precedence)} - E02F 9/261: {Surveying the work-site to be treated} - E02F 3/384: {the boom being pivotable relative to the frame about a vertical axis} - E02F 9/2033: {Limiting the movement of frames or implements, e.g. to avoid collision between implements and the cabin (sub-groups of E02F3/431 of E02F3/435 take precedence; for turntables E02F9/123)} - E02F 9/2037: {Coordinating the movements of the implement and of the frame} - E02F 9/264: {Sensors and their calibration for indicating the position of the work tool} - G05D 1/0055: {with safety arrangements} - G05D 1/617: Safety or protection, e.g. defining protection zones around obstacles or avoiding hazards (arrangements for controlling the position or course of two or more vehicles for avoiding collisions therebetween G05D1/693; arrangements for reacting to or preventing system or operator failure G05D1/80) - E02F 3/964: {of several tools mounted on one machine (E02F3/962 takes precedence)} - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ## Abstract According to the present invention, a display system of a turning work vehicle is used for the turning work vehicle in which a work machine having a bucket 8 can be offset relative to a revolving superstructure in the horizontal direction. The display system includes: an arithmetic unit that calculates the position of the bucket on the basis of a detection result obtained by a position detecting device provided on the turning work vehicle, and calculates a necessary revolving amount of the revolving superstructure and a necessary offset amount of the work machine that are needed to align a side section of the bucket with a side edge of a predetermined excavation area; and a display device that displays the positional relationship between the bucket and the predetermined excavation area. ## Claims ### Claim 1 A display system of a turning work vehicle, the display system being used for the turning work vehicle which can offset a work machine including a bucket relative to a revolving superstructure in a horizontal direction, the display system comprising: an arithmetic unit, which calculates a position of the bucket based on a result of detection by a position detecting device installed on the turning work vehicle, and calculates a necessary revolving amount of the revolving superstructure and a necessary offset amount of the work machine that are needed to align a side section of the bucket with a side edge of a predetermined excavation area; and a display device which displays a positional relationship between the bucket and the predetermined excavation area. ### Claim 2 (depends on 1) The display system of the turning work vehicle according to claim 1, wherein the display device displays information for informing about an operation amount of the revolving superstructure according to the necessary revolving amount, and an operation amount of the work machine according to the necessary offset amount. ### Claim 3 (depends on 1) The display system of the turning work vehicle according to claim 1, further comprising a safety device which restricts the revolution of the revolving superstructure and the offset of the work machine so that the bucket does not cross over the side edge of the predetermined excavation area. ### Claim 4 (depends on 1) The display system of the turning work vehicle according to claim 1, wherein the offset of the work machine is performed by swinging the work machine right and left with respect to the revolving superstructure. ### Claim 5 (depends on 1) The display system of the turning work vehicle according to claim 1, wherein the display device displays at least the bucket and the predetermined excavation area in a plan view. ### Claim 6 (depends on 1) The display system of the turning work vehicle according to claim 1, wherein the display device displays the side edge of the predetermined excavation area by a virtual line extending in an extending direction of the predetermined excavation area. ### Claim 7 (depends on 1) A turning work vehicle comprising: the display system of the turning work vehicle according to claim 1; a lower traveling body; the revolving superstructure which is provided above the lower traveling body so as to be revolvable; and the work machine which can be offset relative to the revolving superstructure in a horizontal direction. ### Claim 8 A display method for a turning work vehicle, the display method being used for the turning work vehicle which can offset a work machine, including a bucket, relative to a revolving superstructure in a horizontal direction, the display method comprising: calculating a position of the bucket based on a result of detection by a position detecting device installed on the turning work vehicle, and calculating a necessary revolving amount of the revolving superstructure and a necessary offset amount of the work machine that are needed to align a side section of the bucket with a side edge of a predetermined excavation area; and displaying a positional relationship between the bucket and the predetermined excavation area on a screen of a display device.