An excavator includes at least one gyro sensor for sensing the incline of equipment; a swing motor for rotating an upper body of the excavator; a first pressure sensor for sensing an operating pressure value applied to the swing motor; a swing joystick for driving the swing motor; a second pressure sensor for sensing a manipulation value inputted into the swing joystick; and a controller, wherein the controller receives pieces of information sensed by the gym sensors, the first pressure sensor, and the second pressure sensor, and detects the operating pressure value of the swing motor, sensed through the first pressure sensor, so as to notify a worker of the time at which lubricating oil is added if a maximum manipulation value is inputted into the swing joystick for a minimum measuring time or more in a swing friction force measurement mode.

A swivel joint for a construction machine can detect a slewing angle of an upper slewing body and has a high maintainability. The swivel joint includes a body, a stem, a lower cover, and a sensor unit. The sensor unit includes: a rotation angle sensor fixedly attached to an upper end of the stem; and a rod having a distal end provided with a detection target to be detected by the rotation angle sensor and a proximal end fastened to the lower cover. The stem is formed with: a rod insertion hole for receiving the rod to be inserted therethrough; and a stem-side drain oil passage for allowing a drain oil to pass therethrough.

The present invention relates to a control unit for a vehicle. The vehicle includes a wheel axle fluid circuit adapted to feed wheel axle fluid to one or more wheel axles of the vehicle. The vehicle further includes a propulsion assembly adapted to propel the vehicle. The control unit is adapted to, on the basis of at least the following: information indicative of the propulsion assembly being inactive, information indicative of an expected time range until an expected operation start time of the vehicle, and information associated with a temperature of the wheel axle fluid, determine whether or not a conditioning procedure, during which the temperature of the wheel axle fluid is increased as compared to a present temperature of the wheel axle fluid, should be initiated for the wheel axle fluid.

A swing drive for rotating a component of a work vehicle. The swing drive has an electric machine rotating an output shaft about a drive axis and having a planetary set disposed beneath the electric machine. The planetary set has a carrier with pinion shafts having oil passageways therethrough. A splash plate is disposed axially between the electric machine and the planetary set to direct lubricating oil from a face of the electric machine to the oil passageways of the pinion shafts and to direct lubricating oil from the face of the electric machine around the oil passageways. A drive gear is driven to rotate about the drive axis by the electric motor via the double planetary set.

A construction machine comprises a lower traveling body, an upper turning body, and engine that is disposed on the rear portion of the turning body, and a turning frame that constitutes the bottom portion of the upper turning body and on which the engine is mounted. The turning frame comprises a bottom plate, a left and right pair of a first vertical plate and a second vertical plate, and a coupling member that divides the space between the first vertical plate and the second vertical plate. The coupling member includes a top plate and a front and rear pair of a front side plate and a rear side plate that extend downward from both ends of the top plate in the front to rear direction, and forms a box shape structure with the first vertical plate and the second vertical plate. The box shape structure has a first opening formed in the first vertical plate, a second opening formed in the second vertical plate, and a front engine support part formed in the top plate.

A rotary drive system includes an electric motor, a speed reducer, and a lubricating oil-circulating unit. The electric motor has an electric motor casing forming a first accommodating space and a communication hole communicating downward. The speed reducer has a speed reducer casing forming a second accommodating space communicating with the first accommodating space through the communication hole. The lubricating oil-circulating unit has a lubricating oil flow path and a lubricating oil pump. The lubricating oil flow path connects the first accommodating space and the second accommodating space at the outside. The lubricating oil pump pumps lubricating oil from the second accommodating space side to the first accommodating space side.

An electric motor includes a rotor having a rotary shaft rotating around a vertically extending axis and a rotor core fixed to an outer peripheral surface of the rotary shaft, a stator surrounding the rotor core from an outer peripheral side, a lower bottom portion as a partition wall partitioning a first space where the rotor and the stator are disposed and a lubricating oil is supplied from an outside, a storage portion configured to store the lubricating oil supplied into the first space, a brake mechanism as a drive unit discharging the lubricating oil inside the storage portion into the first space, and sliding portions into each of which the lubricating oil discharged from the inside of the storage portion is introduced.

The present disclosure relates generally to systems and methods for sensing wear in machines designed to reduce or break-down material. More particularly, the present disclosure relates to systems and methods for sensing wear of reducing elements used by excavation machines such as surface excavation machines. The present disclosure relates to a wear sensing system including a multi-level wear sensor protection system. The multi-level wear sensor protection system includes a first level of protection, a second level of protection, and a third level of protection.

A construction machine comprises a lower traveling body, an upper turning body, and a turning frame that constitutes the bottom portion of the upper turning body. The turning frame comprises a bottom plate, a first vertical plate and a second vertical plate, and a coupling member that divides the space between the first vertical plate and the second vertical plate. The coupling member includes a top plate and a front and rear pair of a front side plate and a rear side plate that extend downward from both ends of the top plate in the front to rear direction, and forms a box shape structure with the first vertical plate and the second vertical plate. The box shape structure has a first opening formed in the first vertical plate, a second opening formed in the second vertical plate, and a front engine support part formed in the top plate.

A shovel includes an undercarriage, an upper swing structure swingably attached to the undercarriage, and an automatic greaser mounted on the upper swing structure. The automatic greaser is configured to individually change the amount of grease fed to a first greasing point among multiple greasing points and the amount of grease fed to a second greasing point among the multiple greasing points based on information on the multiple greasing points.