| 摘要 |
The truck comprisies posts (12,13,14,15) having hydraulically extendable and retractable support legs (12a,13a,14a,15a) arranging at the four corners of the support frame (2). The two rear posts (14,15) can be displaced sideways. The two front posts (12,13) are joined to each other at their upper ends by a connecting cross beam (16). The two rear posts are joined by a pair of cross beams (17,18). The lower beam (18) has hydraulically operated cylinder rods (18a,18b) and the upper beam (17) has extendable slider beams (17a,17b).
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