Kobelco Construction Machinery Co., Ltd.

Daisuke Muraoka

Takanori Yamasaki

Yoshinobu Hosaka

Michiharu Mukai

A cutting device capable of efficiently cutting an object with a simple configuration includes a grasp unit including a first grasper and a second grasper movable in an opening and closing directions to grasp the object, a cutting unit disposed side by side with the first and second graspers and moved in a cutting direction along the opening and closing directions to cut the object, and a position setter setting a cutting start position and a cutting end position based on respective positions of the first and second graspers that are grasping the object, respectively.

Device for cutting structure and method for cutting structure

Provided is a working machine including a device to be maintained and a winch disposed thereover and enabling a maintenance operation. The working machine includes a base machine, at least one device to be maintained installed at the base machine, and a winch which is driven to wind an operation rope. The winch is attached to the base machine to be pivotable, about a winch support shaft, between a use position at which the winch is used while closing at least a part of a maintenance space over the device to be maintained and a maintenance position at which the winch opens the maintenance space upward to enable the maintenance operation to be performed.

Working machine and maintenance method thereof

A gripping device includes a gripping-device body mounted to an end of a working arm; two gripping members pivotably supported by this body in an opening-closing direction; and a driver that drives the gripping members to open and close them. At least one of the gripping members includes one of various kinds of detachable sections each including a gripping segment; a holding section pivotably connected to the gripping-device body about a central pivot shaft and selectively holding the detachable section in a detachable manner; and a coupling member for detachable coupling. The detachable section has a restrained segment having a detachable-section through-hole extending parallel to the central pivot shaft. The holding section has an opening-closing-direction restraining segment that restrains the restrained segment in the opening-closing direction and a holding wall to which the restrained segment is fastened with the coupling member from a direction parallel to the detachable-section through-hole.

Gripping device of working machine and working machine with the same

A gripping device includes a spring member provided between a gripping member body and a shaft so that driving of a gripping driving cylinder causes a driving force to be transmitted from the gripping driving cylinder to the body while the shaft and the body are held in a predetermined positional relationship; so that the body is allowed to retreat with respect to the shaft by elastically deforming the spring member by an opposing force received from a processing object that contacts the body as a result of rotating the body; and so that contact pressure of the body with respect to the processing object is increased by an elastic force of the spring member as the body retreats.

A hydraulic crusher includes crushing arms, a crusher body having a hollow portion extending in the longitudinal direction, and hydraulic cylinders. The hydraulic crusher includes four first hydraulic hoses which have proximal caps connected to ports of the crusher body and extend toward the distal side in the longitudinal direction in the hollow portion; four second hydraulic hoses which have proximal caps connected to ports of the hydraulic cylinders, and extend into the hollow portion and then toward the distal side in the longitudinal direction while being curved; and a clamp or the like serving as a joint member movable in the longitudinal direction, the clamp connecting distal sections of the first hydraulic hoses with distal sections of the second hydraulic hoses.

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Hiroshima, Japan

Daisuke Muraoka