Mitsui Engineering and Shipbuilding Company Limited

Masaharu Kawaguchi

Toru Takehara

Koji Ohi

Soshi Sato

Kiyoshi Fujiwara

Shinji Hara

Masayasu Miyake

One three-phase transformer (A) out of two paired three-phase transformers among three-phase transformers provided for respective feeder lines outputs, as operating power, first three-phase AC power of the same voltage phase as that of power-supply power. The other three-phase transformer (B) out of the two paired three-phase transformers outputs, as the operating power, second three-phase AC power of a voltage phase shifted by &#x3c0;/6 from that of the power-supply power. The power storage device () of a crane apparatus () stores DC power supplied from a three-phase full-wave rectifier () to a common bus (B), and supplies the stored power to the common bus (B) upon reduction of the DC power.

Container yard and feeding method

A three-phase full-wave rectifier () performs full-wave rectification of three-phase AC power (A) supplied from ground power supply equipment, and supplies obtained DC power (A) to a common bus (B). A &#x394;-Y connection type three-phase transformer () outputs three-phase AC power (B) of a voltage phase shifted by &#x3c0;/6 from the three-phase AC power (A). A three-phase full-wave rectifier () performs full-wave rectification of the three-phase AC power (B) output from the three-phase transformer (), and supplies obtained DC power (B) to the common bus (B).

Crane apparatus, container yard, and feeding method

The guide device for craning a container has guides so arranged that they can be moved vertically by a raising/lowering device mounted on the spreader body and can be positioned at the corners of the spreader. The guides are lowered by the raising/lowering device and secured to the bottom corners of the container held by the spreader. Then the spread parts of the guides project from the lower end of the container to secure the spreader to the container. The structure of the spreader is simple and the weight is light.

Guide device for lifting and transporting a container

The guide device for craning a container has guides so arranged that they can be moved vertically by a raising/lowering device mounted on the spreader body and can be positioned at the corners of the spreader. The guides are lowered by the raising/lowering device and secured to the bottom corners of the container held by the spreader. Then the spreaded parts of the guides project from the lower end of the container to secure the spreader to the container. The structure of the spreader is simple and the weight is light.

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Oita, Japan

Masaharu Kawaguchi