| 摘要 |
PURPOSE:To facilitate a maintenance, by directly conveying concrete, under pressure, from the cylinder of a concrete pump to a presure conveyance pipe which is attached to the discharge port of the concrete cylinder and moved rightward and leftward by the piston of a hydraulic cylinder. CONSTITUTION:A vertical pipe 3 is attached to the discharge port of a concrete cylinder 4 so that the pipe can be moved rightward and leftward by a hydraulic cylinder 1 in accordance with the action of the piston of the concrete cylinder 4. Only the piep 3 is put in concrete. The pipe is secured to a roller so that the pipe is not pushed. As a result, the concrete is directly conveyed, under pressure, from the concrete pump cylinder 4 to the pressure conveyance pipe 3. |
