| 摘要 |
Used in pump concrete casting to eliminate heavy and from a view of industrial injury loaded range a concrete distribution device comprising a two part and about two pivot centres (A) and (B) pivotable cantilever units. The inner cantilever member being secured with two points (1) and (3) and a stay function (12) and an outer counter-weight balanced unit. Upon these two cantilever units the concrete pumping tube is pivotally arranged and may be easily operated over circular surface with the entire length of the distribution tube as radius. In this manner an effective easy to operate laying method with minor risks for industrial injury is obtained. |
