| 摘要 |
PURPOSE:To eliminate the need for external supporting mechanism while making an anchor device compact by a method in which an oil-pressure power is used and the pressing and developing reaction of anchor is absorbed by the anchor itself. CONSTITUTION:Under a condition that the cylinder rod 12 of an oil-pressure cylinder tool is fully expanded, a pipe 11 is fitted on the upper end of a supporting lever 1, and the supporting lever receiver 18 of an oil-pressure cylinder 13 is screwed with the threaded portion (not illustrated) of the supporting lever 1 for connection. These thus connected are penetrated and set in an excavated hole 20 by using the crane boom 21 of a pillar erector car. The oil- pressure pipes 22 and 23 of oil-pressure generating units are connected with the oil-pressure couplers 14 and 15 of the oil-pressure cylinder 13. Afterwards, when an oil pressure is applied in the direction of arrow, the connection between the supporting lever receiver 18 and the supporting lever 1 serves as a force point, and a resistance plate 3 is pressed from above by a pressing and developing force to cause the pipe 11 to be directed downwards. The resistance plate 13 is then opened bilaterally under the guidance of the inductive slope (not illustrated) of a base plate 2 and buried under the ground. Since the pressing of developing reaction of the anchor is absorbed by the connecting point between the oil-pressure cylinder 13 and the supporting lever 1, the need for external supporting mechanism for the pressing and developing reaction can be eliminated. |
