| 摘要 |
The present invention relates to a two-way open-close concrete placing hopper for a discharge port, capable of opening and closing a discharge port of a hopper in two ways to enable the concrete to quickly be discharged from a central area of the discharge port; to reduce loss of concrete; and to prevent injury due to an accidental releases of the concrete and contamination of a construction site. According to the present invention, the two-way open-close concrete placing hopper for a discharge port comprises: a hopper (10) lifted and conveyed by a crane which discharges the concrete; a supporter (30) formed on a lower part of the hopper and secured to the ground; and an opening/closing unit (20) which opens and closes the discharge port of the hopper. The opening/closing unit includes first and second open-close plates (21, 22) which close each half of the hopper′s discharge port respectively, or close the discharge port by being displaced with the layered structure on the lower part of the discharge port; and a driving unit which opens the discharge port by splaying the first and second opening/closing plates, and closes the discharge port by moving together the first and second opening/closing plates. |
