| 摘要 |
PROBLEM TO BE SOLVED: To provide a height changing method of a crane allowing easy changing of the height of the crane.SOLUTION: L-shaped crane 20 includes: a lower frame 20A provided with at least legs 23A and 23B; and an upper frame 20B provided with at least a cross beam 22 and a suspension section. A lifting section 150 for lifting the upper frame 20B with respect to the lower frame 20A is disposed in a lower section of the upper frame 20B. Accordingly, when the L-shaped crane 20 is assembled, for instance, the upper frame 20B in a lower state than a height in a normal state can be made the height in the normal state. Also, for instance, when the crane is dismantled, the height of the upper frame 20B can be made lower than that in the normal state. |
