# US 12,180,681 B2 · Construction machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,180,681 B2 - Document ID: US12180681B2 - Status: Granted - Kind: B2 - Application number: 18/221,842 - Filed: 2023-07-13 - Published: 2024-01-18 - Granted: 2024-12-31 - Earliest claimed: 2022-07-14 - Assignees: Yanmar Holdings Co., Ltd. - Applicants: Yanmar Holdings Co., Ltd. - Inventors: Kohei Okazaki - Web page: https://patentgrep.com/patent/US12180681B2 ## CPC - E02F 9/0875: {Arrangement of valve arrangements on superstructures (arrangement of hydraulic hoses E02F9/2275 takes precedence; valves per se E02F9/2267)} - E02F 3/325: {Backhoes of the miniature type} - E02F 9/0866: {Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment} - E02F 9/0883: {Tanks, e.g. oil tank, urea tank, fuel tank (for vehicles in general B60K15/00)} - E02F 9/16: Cabins, platforms, or the like, for drivers ({for motor vehicles in general B62D33/06}, for cranes B66C13/54) - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) ## Abstract On a turn frame of an excavation machine, a hydraulic oil tank is placed in the center of a right engine chamber in the front-back direction, a control valve is placed in front of the hydraulic oil tank, a battery is further placed in front of the control valve, and a cool mechanism is placed behind the hydraulic oil tank. The control valve is supported by a support member, and a controller that outputs a signal for driving the control valve is mounted to a side plate part of the support member, thereby to be placed in a position in front of the control valve and above the battery. ## Claims ### Claim 1 A construction machine comprising, in a housing chamber on a side of a machine body: a hydraulic oil tank configured to hold a hydraulic oil discharged by a hydraulic pump configured to be driven by a prime mover; a control valve configured to control a flow direction and flowrate of the hydraulic oil to a plurality of hydraulic actuators configured to be actuated by the hydraulic oil discharged from the hydraulic pump; and a controller configured to control the control valve, wherein: the control valve is positioned in front of the hydraulic oil tank, and the controller is placed entirely in front of the control valve. ### Claim 2 (depends on 1) The construction machine according to claim 1, further comprising in the housing chamber: a battery configured to supply power to the controller, the battery positioned in front of the control valve, and the controller is positioned directly above a portion of the battery. ### Claim 3 (depends on 2) The construction machine according to claim 2, wherein: a driver seat is positioned on another side of the machine body, and the controller is positioned in a position shifted to a driver seat side relative to a center of the battery. ### Claim 4 (depends on 3) The construction machine according to claim 3, wherein the controller is configured to be supported on a surface of an inner wall part that faces away from the driver seat within the housing chamber. ### Claim 5 (depends on 4) The construction machine according to claim 4, wherein a center of the control valve, in a plan view, is positioned in a position shifted toward the inner wall part relative to a center of the hydraulic oil tank. ### Claim 6 (depends on 1) The construction machine according to claim 1, wherein the controller, in front view, is positioned such that the controller does not overlap the hydraulic oil tank. ### Claim 7 (depends on 1) The construction machine according to claim 1, wherein a cool mechanism that is configured to cool the hydraulic oil is positioned behind the hydraulic oil tank. ### Claim 8 (depends on 1) The construction machine according to claim 1, further comprising, in the housing chamber on the side of the machine body, a partition separating a space including the hydraulic oil tank from a space including the control valve, wherein the control valve is supported by the partition. ### Claim 9 A construction machine comprising a housing chamber on a first side of a machine body, the construction machine further comprising, in the housing chamber: a hydraulic oil tank configured to store a hydraulic oil; a control valve configured to control a flow of the hydraulic oil to a plurality of hydraulic actuators; a partition separating, in the housing chamber, a space including the hydraulic oil tank from a space including the control valve; and a controller configured to control the control valve, wherein: the control valve is positioned in between the hydraulic oil tank and the controller, and the control valve is supported by the partition. ### Claim 10 (depends on 9) The construction machine according to claim 9, further comprising: a driver seat positioned on a second side of the machine body opposite the first side; and a battery positioned in the housing chamber, wherein the controller is positioned in the housing chamber closer to the second side than a center of the battery. ### Claim 11 (depends on 9) The construction machine according to claim 9, further comprising: a driver seat positioned on a second side of the machine body opposite the first side, wherein the controller is supported by a plate in the housing chamber, and wherein the controller is positioned on a side of the plate that faces away from the driver seat. ### Claim 12 (depends on 11) The construction machine according to claim 11, wherein a center of the control valve is positioned closer to the plate than a center of the hydraulic oil tank. ### Claim 13 (depends on 11) The construction machine according to claim 11, wherein the controller extends a distance from the plate, and wherein a gap exists between the plate and the hydraulic oil tank that is greater than or equal to the distance. ### Claim 14 A construction machine comprising a housing chamber on a first side of a machine body configured to rotate about an axis, the construction machine further comprising, in the housing chamber: a hydraulic oil tank configured to store a hydraulic oil; a control valve configured to control a flow of the hydraulic oil to a plurality of hydraulic actuators; a controller configured to control the control valve; and a battery configured to supply power to the controller, wherein: the control valve is positioned between the hydraulic oil tank and the controller, and the controller is positioned relative to the battery such that a line parallel to the axis extends through the controller and the battery. ### Claim 15 (depends on 14) The construction machine according to claim 14, further comprising: a driver seat positioned on a second side of the machine body opposite the first side; and wherein the controller is positioned in the housing chamber closer to the second side than a center of the battery. ### Claim 16 (depends on 14) The construction machine according to claim 14, further comprising: a driver seat positioned on a second side of the machine body opposite the first side, wherein the controller is supported by a plate in the housing chamber, and wherein the controller is positioned on a side of the plate that faces away from the driver seat. ### Claim 17 (depends on 16) The construction machine according to claim 16, wherein a center of the control valve is positioned closer to the plate than a center of the hydraulic oil tank. ### Claim 18 (depends on 16) The construction machine according to claim 16, wherein the controller extends a distance from the plate, and wherein a gap exists between the plate and the hydraulic oil tank that is greater than or equal to the distance.