| 摘要 |
PURPOSE: A steel grating cover using a permanent magnet is provided to reduce maintenance costs and to prevent river contamination by preventing foreign materials, such as rainwater and solid waste, from flowing in. CONSTITUTION: A steel grating cover using a permanent magnet is composed as follows. Permanent magnets are vertically and horizontally arranged in a rubber with multiple holes or a soft resin board and are fixed to a steel grating(32). A metal net(44) is arranged on the steel grating in order to prevent solid waste from flowing in. A mat type cover is integrally formed on the metal net using a resin board and adhesive. |
