| 摘要 |
The present invention relates to a unit support panel of a coupling type square manhole cover and, more specifically, relates to a square manhole cover installed to be hung on a drain with a protrusion. The square manhole cover comprises: a support panel having a drain hole; a coupling protrusion unit protruding from a front surface of the support panel; and a coupling groove unit formed on a rear surface of the support panel. The coupling protrusion unit comprises: a neck unit; a support protrusion formed on one end of the neck unit; and a hanging protrusion formed on a lower part of the support protrusion, and formed to protrude. The coupling groove unit comprises: a mounting groove; a support hole of a penetrating structure formed to be connected to the mounting groove; and a hanging groove connected to the support hole formed on the lower surface of the support panel. The unit support panel enables an other square manhole cover to be fitted into the square manhole cover arranged in the drain without connection using a bolt and a screw. The unit support panel is strongly fixated by the hanging protrusion such that the unit support panel is easily installed and maintained; thus reducing production and installation costs. |
