Kobelco Cranes Co., Ltd.

Kobelco Construction Machinery Co., Ltd.

Hideaki Ishihara

Shintaro Sasai

Hiroaki Kawai

Koichi Shimomura

Yoshiki Kamon

Tadakazu Nishikino

Kazuhiro Kobayashi

An operating machine includes: a charging time estimation unit that estimates a first estimated charging time required to restore a capacity of a first battery from a first estimated residual capacity to a target capacity value of the first battery and a second estimated charging time required to restore a capacity of a second battery from a second estimated residual capacity to a target capacity value of the second battery; a capacity management implementation unit that implements capacity management on the first battery and the second battery such that the first battery is charged for the first estimated charging time and the second battery is charged for the second estimated charging time; and a discharge amount limitation unit for limiting a discharge amount of the second battery during an idling stop so that a residual capacity of the second battery after discharge is maintained at or above a set value.

Operating machine

A crane includes a limiting device to limit a raising/lowering angle of the mast during suspending work to be equal to or less than an upper limit angle which is less than a value of the raising/lowering angle when the mast extends vertically; a release device into which a release instruction for causing the limiting device to release the limitation on the raising/lowering angle of the mast is input; and a first detection section adapted to detect that the mast support device is at an overhanging position where the mast support device pushes up and sets the mast in the work posture. The limiting device is operable whenever the first detection section does not detect that the mast support device is at the overhanging position, even if the release instruction is input into the release device, to prohibit the mast from being tilted rearward beyond the upper limit angle.

Crane

A boom component display apparatusof the present invention is provided with processing units, connector assembliesand a display unit. The processing unitsare installed on each of a plurality of unit boomsthruthat compose a boom assemblyof a craneand outputs identification information of each unit boom. The connector assembliestransmits the identification information outputted from the processing units. The display unitdisplays a connecting sequence information to show the relation between the connecting sequence of a plurality of unit boomsthruand the identification information of a plurality of unit boomsthru, basing on the identification information sent from the processing unitsthrough the connector assemblies. By depending upon the boom component display apparatus of the present invention, it is possible to prevent the unit booms from being assembled in the wrong connecting sequences.

Boom component display apparatus

An load moment indicator, in a crane provided with hoist means of a main side and an auxiliary side, including a calculator in which a reference value if a rated load determined by the stability of a crane or the like is preset, a hoist load of the other side is converted into a load component of its own side, and the converted value is subtracted from a reference value of its own side to thereby obtain a rated load of own side, or in which a tolerant load that can be suspended by the other side is converted into a load component of its own side on the basis of a base of a reference value of the other side, and the converted value is compared with the reference value of its own side to select a lower value. Thereby, it is possible to make the most of the suspending ability of the main side and the auxiliary side and for an operator to grasp clearly a tolerance of the hoist load.

Growing community of inventors

Akashi, Japan

Hideaki Ishihara