The invention relates to a hydraulic cylinder, for example for use with a hydraulic tool, which hydraulic tool is provided with a frame and an element which is movable with respect to the frame by means of the hydraulic cylinder. A hydraulic tool which is operated by means of a hydraulic cylinder as described above is known from, for example, European patent no. 0641618. This patent discloses a frame which is coupleable to a jib of an excavator or the like and to which an assembly of two jaws can be coupled. One of the jaws is pivotable with respect to the other jaw by means of a hydraulic adjusting cylinder (a double-acting piston/cylinder combination).

A system for controlling movement of multiple links of an excavator can move a tool at the end of an excavator arm. The system includes a sensor data interface configured to receive sensor data for determining relative orientations of the multiple links with respect to each other, and a surface setting unit configured to access design data defining a reference surface. The system has a remapping unit configured to remap a user command for moving two links with respect to each other about a corresponding joint to a rotatory tool degree of freedom. The system then coordinates output signals, such that as a function of the remapped user command the tool is rotated within the associated rotatory tool degree of freedom, without the need that an operator coordinates underlying joint movements.

To allow a worker to visually recognize information for assisting transportation of a transport object and the transport object at the same time. A guidance system includes a guidance device and a controller. The guidance device has a display portion. The controller stores information of a target position of a transport object. The controller calculates a detected position which is a current position of the transport object based on a detection result of a detection portion, and further calculates a position deviation which is a deviation of the detected position from a target position. The display portion displays information of the position deviation.

The disclosed embodiments relates an arrangement for tilting or turning a tool, the arrangement including at least one actuator for tilting and turning the tool, the actuator including at least a frame part adapted to be closed by a cover, the frame part and the cover enclosing a chamber portion (8) where a blade part having one or more blade gaskets is provided to divide the chamber portion into separate chamber spaces, the blade part being connected, at its first end, to a shaft, the second end of the blade part being adapted move reciprocally in the chamber portion, rotating the shaft at the same time. The joint between the frame part and the cover is sealed by a gasket contacting the blade gaskets.

A work machine is capable of rotating an attachment while appropriately supporting a load applied to the attachment. The work machine has a hydraulic cylinder attached to a body side surface of an arm and a first link rod extending along a back side surface of the arm. A second link rod is rotatably supported via a first pin extending in the width direction of a front working device, and has one end projecting toward the back side surface of the arm and the other end projecting toward the body side surface thereof. One end of the first link rod is rotatably connected to the attachment. One end of the second link rod is rotatably connected to the other end of the first link rod, and the other end thereof is rotatably connected to a distal end of a cylinder rod of the hydraulic cylinder via a third pin.

A rotary ditching attachment for an articulated boom of an excavator type machine includes two rotary excavating heads supported in spaced relation on opposite sides of a central support. The heads rotate about a common axis. The rotary ditching attachment is rotatably coupled to the boom by a rotating tool mount. The rotating tool mount is connectable to the central support such that the central support and attached excavating heads are rotatable about an axis extending through the central support and perpendicular to the common axis of the excavator heads. Excavating assemblies are mounted on outwardly facing and inwardly facing surfaces of rotors forming each excavating heads. Rotating the rotary ditching attachment relative to a direction of movement of the rotary ditching tool relative to the ground increases the width of cut of the excavating heads when used to form or rehabilitate a ditch.

A construction equipment includes: a lower traveling body; an upper rotating body rotatably supported on the lower traveling body; a work machine comprising a boom rotatable with respect to the upper rotating body, an arm rotatable with respect to the boom, a bucket rotatable with respect to the arm, a tilt rotator having a tilting actuator for supporting the bucket to tilt with respect to the arm, and a rotating actuator for supporting the bucket to rotate with respect to the arm; an operation lever for outputting an operation signal; a location information providing unit providing location and posture information of the work machine; a work setting unit for setting and providing plane information of a work area; and an electronic control unit controlling the work machine and the posture of the bucket so that the rotating axis of the bucket is vertically aligned with respect to the work area.

A construction equipment includes a work machine including a boom rotatable with respect to an upper rotating body, a rotatable arm, a rotatable bucket, a tilt rotator including of a tilting actuator, and a rotating actuator; an operation lever for outputting an operation signal corresponding to an operation amount of a driver; a location information providing unit for providing location information and posture information of the work machine; a work setting unit for setting a work area of the work machine, and providing plane information of the work area; and an electronic control unit for controlling the work machine according to a signal inputted from at least one of the operation lever, the work setting unit and the location information providing unit, wherein the electronic control unit controls the posture of the bucket so that the tip of the bucket contacts the work area.

A work machine comprises a tilt rotator to control rotation of a tool, a coupler to couple and decouple the tool to/from the tilt rotator, a display to output information to an operator of the work machine, an operator interface to receive input from the operator, and processing circuitry. The processing circuitry is configured to output, on the display, a rotation instruction for the operator to initiate a rotation operation of the tilt rotator, in a case that the tilt rotator is determined to be in an incorrect position, stop the rotation operation of the tilt rotator under a condition that the tilt rotator is determined to be in a correct position based on a rotation angle of the tilt rotator about a rotational axis, the rotation operation being initiated by a rotation input via the operator interface.

The invention relates to a rotator (100) for a tool (200). The rotator (100) comprises a stator (102) and a rotor (104) rotatably arranged inside the stator (102). The rotor (104) comprises a radial bearing (122) having a first axial extension (a1) in the rotator (100). The rotator (100) comprises a separate bearing (112) arranged radially outside the rotor (104). The separate bearing (112) is configured to carry an external load of the rotator (100). The rotator (100) further comprises an electrical swivel (108) and/or an angle meter (116) arranged inside the rotor (102), and the electrical swivel (108) and/or the angle meter (116) at least partially extends axially in the first axial extension (a1) in the rotator (100). Thereby, a compact rotator design is provided.