Methods and systems for operating an industrial machine. One system includes a controller that includes an electronic processor. The electronic processor is configured to calculate an eccentricity of a center of gravity of the industrial machine with respect to a center of a bearing propelling the industrial machine and calculate a ground pressure associated with the bearing based on the eccentricity of the center of gravity. The electronic processor is also configured to set a maximum torque applied by an actuator included in the industrial machine to a value less than an available maximum torque based on the eccentricity of the center of gravity and the ground pressure.

An electric linear actuator is provided. The electric linear actuator may have a cylinder housing, an electric motor disposed inside the cylinder housing, a piston rod at least partially slidably disposed inside the cylinder housing, and a planetary gear arrangement disposed inside the cylinder housing and configured to connect the electric motor to the piston rod. The planetary gear arrangement may have a ring gear integrally connected to the piston rod. The electric motor, the planetary gear arrangement, and the piston rod may be disposed in series along a central axis of the cylinder housing.

Some implementations described herein relate to a work tool coupler for a work machine. The work tool coupler may include a mechanical interface configured to mechanically couple a work tool to the work machine. The work tool coupler may include an electrical interface between the work tool and the work machine. The electrical interface may include one or more electromagnets configured to guide or fix the work tool in a coupled position with respect to the work tool coupler. The electrical interface may include a transmitter coil configured to wirelessly provide electrical energy from a power source included in the work machine to the work tool.

An industrial machine and a method of controlling an industrial machine, the industrial machine including a dipper supported by a dipper handle. The method may include determining an operating phase of the industrial machine, in a first operating phase of the industrial machine, limiting, with at least one controller, a reach of the dipper handle, and in a second operating phase of the industrial machine, enabling, with the at least one controller, an extended reach of the dipper handle greater than the reach in the first operating phase. The industrial machine may include at least one controller configured to determine an operating phase of the industrial machine, in a first operating phase of the industrial machine, limit a reach of the dipper handle, and, in a second operating phase of the industrial machine, enable an extended reach of the dipper handle greater than the reach in the first operating phase.

The present invention relates to an excavator arm having a rotation device. The excavator arm is connected to a boom of an excavator to be operated by a cylinder, connected with a bucket for excavation at the lower end through a quick coupler, and connected with a bucket cylinder for operating the bucket over the arm. The arm is divided into an upper arm and a lower arm and a rotation device that selectively rotates the lower arm at predetermined angles over 360 in both directions is fixed between the upper arm and the lower arm.

A construction equipment includes an electric actuator including a rod extending along a longitudinal axis, a sliding member movable along the rod, an electric motor for converting electrical power into a movement of the sliding member along the longitudinal axis, a connecting rod including a first end which is articulated on sliding member and a second end which is articulated on a first element of the construction equipment in order to move the first element relative to a second element or inversely and guiding means for guiding the movement of the sliding member the longitudinal axis. The electric motor, the rod and the sliding member are integrated into the second element of the construction equipment.

A synthetic rope arrangement is disclosed for use with a construction machine. The synthetic rope arrangement may have a synthetic rope with an end, and an anchor having an opening formed therein to receive the end of the synthetic rope. The anchor may be removably connectable to the construction machine. The synthetic rope arrangement may also have a stop coupled to the end of the synthetic rope and configured to inhibit the end of the synthetic rope from passing through the anchor.

An electric cylinder includes a motor that is a driving source, an output shaft configured to rotate in response to driving of the motor, a sun gear coupled to the output shaft and configured to rotate in response to the rotation of the output shaft, a tubular holder disposed adjacent to an axial end surface of the motor and including a fluid accommodation portion that allows a magnetic fluid to be accommodated between the holder and an outer periphery of the sun gear, a pair of magnetic pole pieces provided on an inner peripheral surface of the holder, and a magnet disposed between the pair of magnetic pole pieces and configured to hold the magnetic fluid in the fluid accommodation portion by using an action of a magnetic field.

A drive device for rotationally moving a drive target includes a motor portion, a speed reducer for reducing a torque input from the motor portion, and a buffer device for outputting the torque input from the speed reducer to the drive target via an elastic portion. At least a part of the buffer device is disposed on a side opposite to the motor portion and the speed reducer with the drive target interposed therebetween.

Construction equipment includes a framework and at least one electric actuator for moving at least one element of the framework. The actuator includes a ball or roller screw system having a threaded rod and a nut forming a helical connection with the threaded rod. An electric motor drives the rod in rotation around a longitudinal axis, forcing the nut to move axially along the rod. A carriage is axially connected with the nut. An axial guide guides the movement of the carriage. The guide is fixed to the framework. At least one support element connects, directly or indirectly, the threaded rod to framework. The support element is designed so that threaded rod can tilt, to some extent, relative to framework around any axis perpendicular to rod longitudinal axis.