| 摘要 |
PROBLEM TO BE SOLVED: To reduce labor of rolling compaction work applied after piping work, and improve safety by movably fitting a spherical part of a shaft connected to the driving means side and a spherical surface-shaped part of a bearing means installed on the rolling compaction means side. SOLUTION: A bearing body 3 being a part of a bearing means is installed/fixed inside a rolling compaction body 1 as a rolling compaction means. Next, a spherical part 19 of a shaft 17, a semispherical bearing part 7 of the bearing body 3 and a bearing part 25 of a cover 21 are rotatably movably connected to each other. At work, a rolling compaction device is installed on the tip of an arm 43 of a heavy machine via a hydraulic breaker, and rolling compaction is applied while moving the rolling compaction device by driving the arm 43. In this case, even if the whole rolling compaction device inclines, since the shaft 17 properly rotatably moves, the rolling compaction body 1 is always parallelly brought into pressure contact with an upper surface of earth and sand. Since pressure contact force is uniformly transmitted via a spherical surface-shaped bearing part, almost uniform rolling compaction can be applied to the upper surface of the earth and sand via the whole surface of an under surface of the rolling compaction body 1 to thereby improve efficiency and safety.
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