To measure the weight of an excavated object, with a simple configuration at low cost, a scraper vehicle includes a coupler having a first portion to be coupled to a driving vehicle and a first detection device provided at at least one of the first portion of the coupler and a first supporting member that supports the first portion. The first detection device is configured to detect a variation in a physical quantity of the first portion.

To measure the weight of an excavated object, with a simple configuration at low cost, a scraper vehicle includes a coupler having a first portion to be coupled to a driving vehicle and a first detection device provided at at least one of the first portion of the coupler and a first supporting member that supports the first portion. The first detection device is configured to detect a variation in a physical quantity of the first portion.

A method for machine grade assist includes determining whether user input will cause an implement of a machine to dig below a desired grade. User input to move a stick of an excavator can be blocked and/or delayed using hydraulic pressure so that movement of both the stick and the boom of the excavator can be synchronized to prevent a bucket of the excavator from digging below a desired grade when the stick is moved.

To measure the weight of an excavated object, with a simple configuration at low cost, a scraper vehicle includes a coupler having a first portion to be coupled to a driving vehicle and a first detection device provided at at least one of the first portion of the coupler and a first supporting member that supports the first portion. The first detection device is configured to detect a variation in a physical quantity of the first portion.

To measure the weight of an excavated object, with a simple configuration at low cost, a scraper vehicle includes a coupler having a first portion to be coupled to a driving vehicle and a first detection device provided at at least one of the first portion of the coupler and a first supporting member that supports the first portion. The first detection device is configured to detect a variation in a physical quantity of the first portion.

A bucket assembly for attachment to a machine, such as a skid steer or tractor, that includes a bucket and a mounting assembly that permits swiveling of the bucket about a vertical axis and pivoting of the bucket about a horizontal axis.

Disclosed embodiments include hydraulic systems which provide power to lift, tilt and auxiliary (e.g., implement) functions, including high-flow auxiliary functions, with increased efficiency. Disclosed embodiments incorporate a single variable displacement pump that supplies pressurized fluid to a main control valve (e.g., for lift, tilt, and auxiliary functions) and a bypass circuit. The main control valve supplies fluid to control lift, tilt, and auxiliary flow for implements. The bypass circuit combines flow with the output of the auxiliary section of the main control valve to optionally provide high-flow for selected implements. The single variable displacement pump can then be set to different output flow levels, with the bypass circuit functioning differently under different conditions to optimize hydraulic flow to carryout various tasks under various conditions.

A work machine includes work equipment. A control device of the work machine includes a trajectory generation unit, and an operation signal output unit. The trajectory generation unit generates a target trajectory of the work equipment according to an excavation curve ratio determined in advance. The excavation curve ratio is expressed as a ratio of an excavation depth to an excavation length. The operation signal output unit outputs an operation signal for the work equipment according to the target trajectory.

A hydraulic power shovel includes a frame, a power cylinder, a hydraulic installation, and a control unit. The frame is configured to support a turret equipped with an arm terminated by a tool, such as a bucket having a tamping surface. The power cylinder is linked to the arm and is configured to press on the turret. The hydraulic installation includes an adjustable flow pump configured to supply the power cylinder via a slide valve and a hydraulic liquid tank. The control unit is linked to (i) a control member actuated by the operator and configured to generate a control signal, and (ii) a sensor configured to generate a sensor signal corresponding to a pressure and temperature of hydraulic liquid in the power cylinder. A vapour pressure diagram of the hydraulic liquid is available in the control unit.

A method for machine grade assist includes determining whether user input will cause an implement of a machine to dig below a desired grade. User input to move a stick of an excavator can be blocked and/or delayed using hydraulic pressure so that movement of both the stick and the boom of the excavator can be synchronized to prevent a bucket of the excavator from digging below a desired grade when the stick is moved.