Crane
AssigneeKobelco Construction Machinery Co., Ltd.
InventorHiromitsu Hamaguchi
Life of this patent
Estimating the term…
Abstract
There is provided a crane that is capable of adjusting the warp of a raising member mounted on a supporting body to be raised and lowered, where the adjustment is made according to a posture of the raising member and load of a cargo. The crane includes a crane body, a boom, a raising device, a main rope, a main winch, a mid-support rope, a mid-support winch, and a manipulation unit. The mid-support rope connects a middle portion of the boom to the guylink and includes a securing end P secured to the guylink. The mid-support winch winds up and winds out the mid-support rope to change the distance between the guylink and the boom.
Claims6
A crane comprising:
- a raising member including a distal end and a proximal end, and extending in a longitudinal direction;
- a supporting body that supports the raising member to be raised and lowered;
- and
- a raising device that includes a guylink having a first end and a second end, the first end being connected to the distal end of the raising member, the second end being located in an opposite side of the first end, and a pull unit connected to the second end of the guylink to pull the guylink, the raising device being configured to adjust a force with which the guylink pulls the raising member and thus raising the raising member;
- a lift rope hung from the distal end of the raising member to lift a cargo;
- a lift winch that winds up and winds out the lift rope;
- a mid-support rope that connects a middle portion of the raising member to the guylink and includes a securing end secured to the guylink at a point between the first end and the second end of the guylink, and a held portion extending from the securing end toward the raising member;
- a constraining unit that is disposed on a middle portion of the raising member to constrain the held portion of the mid-support rope;
- and
- a mid-support winch that winds up and winds out the held portion of the mid-support rope to change a distance between the guylink and the constraining unit.
Dependencies are inferred from the claim text.