Kobe Steel, Ltd.

Kobelco Construction Machinery Co., Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Hiromitsu Hamaguchi

Yasuto Kataoka

Yasuhiro Nakashima

Teppei Maedo

Takunori Yamaguchi

Yoshihide Nishikawa

Hiroki Nakayama

Yoji Hanawa

Kyohei Kawamoto

Toshiharu Yamashita

An upper turning body mounted on a lower body for a crane includes a turning frame mounted on the lower body to turn freely, and a boom provided to the turning frame to be raised and lowered freely. The turning frame includes a pair of attachment brackets to which a base end section of the boom is attached such that the boom is free to be raised and lowered, and a frame body to which the pair of attachment brackets are provided with an interval in a left-right direction of the upper turning body. The frame body is formed of a plurality of divided frames arranged side by side in the left-right direction of the upper turning body, adjacent divided frames of the plurality of divided frames being separably joined to each other.

Upper turning body for crane

Lifting performance of a work machine is increased while suppressing an increase in a vehicle weight. When a slewing frame is seen from a side, a first reinforcement member is provided from a boom foot section to a front side part of a slewing bearing, a second reinforcement member is provided from the boom foot section to a mast foot section, and a third reinforcement member is provided from the mast foot section to a rear side part of the slewing bearing. Furthermore, a fourth reinforcement member is provided from a middle region (M) located at an upper end portion of the slewing frame and above a rear portion of the slewing bearing to the front side part of the slewing bearing, and a fifth reinforcement member is provided from the middle region (M) to the rear side part of the slewing bearing.

Revolving frame for work machine, and work machine provided with same

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.

Crane

An upper turning body mounted on a lower body for a crane includes a turning frame mounted on the lower body to turn freely and a boom provided to the turning frame to be raised and lowered freely. The turning frame includes a pair of attachment brackets to which a base end section of the boom is attached such that the boom is free to be raised and lowered, and a main frame to which the pair of attachment brackets are provided with an interval in the left-right direction of the upper turning body. The dimension of the main frame in the front-rear direction of the upper turning body orthogonal to the left-right direction is smaller than the dimension of the main frame in the left-right direction.

A pressure vessel having reduced weight while satisfying required design conditions has upper wall first and second ribs, upper curved surface portion first and second ribs, a bottom wall first rib with a bottom wall second rib formed on an outer surface of a bottom wall, lower curved surface portion first and second ribs, and a side wall first rib with a side wall second rib on an outer surface of a side wall. The center upper wall first rib has a center upper wall first rib center portion, a center upper wall first rib continuous portion, and a center upper wall first rib thin portion. The center bottom wall first rib has a center bottom wall first rib center portion, a center bottom wall first rib continuous portion, and a center bottom wall first rib thin portion.

Pressure vessel having rib structure corresponding to stress distribution

A pressure vessel having reduced weight while satisfying required design conditions has polygonal upper and bottom walls, a side wall provided therebetween, an upper curved surface portion for connecting the upper and side walls, and a lower curved surface portion for connecting the bottom and side walls. An upper wall center rib includes an upper wall center part, and upper wall annular ribs respectively connecting substantially center parts of the upper wall and surrounding the upper wall center rib. Ribs are formed substantially centrally in the upper curved surface portion. A bottom wall center rib includes a center part in the bottom wall. Bottom wall annular ribs are formed connecting the bottom wall and surrounding the bottom wall center rib. Lower curved surface portion ribs are formed substantially centrally in the lower curved surface portion, and main surface ribs are formed substantially centrally in the side wall.

Pressure vessel

A pressure vessel having reduced weight while satisfying required design conditions has polygonal upper and bottom walls, a side wall between the upper and bottom walls, an upper curved surface portion connecting the upper wall's peripheral edge and the side wall's upper end wall by curved surfaces convexed outward, and a lower curved surface portion connecting the bottom wall's peripheral edge and the side wall's lower end by curved surfaces convexed outward. The upper wall center portion is thicker than the upper curved surface portion, which is thicker than an upper wall annular portion formed between the upper wall center portion and the upper curved surface portion. The bottom wall center portion is thicker than the lower curved surface portion, which is thicker than a bottom wall annular portion formed between the bottom wall center portion and the lower curved surface portion.

Growing community of inventors

Hyogo, Japan

Hiromitsu Hamaguchi