| 摘要 |
PROBLEM TO BE SOLVED: To provide a deck crane which achieves high measuring accuracy while simplifying measurement operation of abrasion loss of a swing bearing.SOLUTION: A deck crane includes: a pinion which is rotated by power of a motor; a swing bearing B having an inner race 20 where a rack 20a which engages with the pinion is annularly formed at an inner periphery; a housing base 3 which is provided above the swing bearing in a vertical direction and is rotatably supported through the swing bearing B; and a crane body 5 in which a machine room 5a having a floor surface formed by the housing base is formed and the motor is housed in the machine room. A through hole 3b, in which a measuring instrument 40 for measuring a separation distance L between the housing base and the inner race may be inserted, is formed in a portion of the housing base which is positioned immediately above the inner race in the vertical direction. |
