Shock-proof mainboard

The utility model discloses a shock absorption main board, which is particularly suitable for being used as an industry main board in a numerical control system. The utility model comprises a main board which is fixed with a hand disk, a chip and a heat dissipation mechanism, wherein the main board is fixed on a cabinet shell through a shock absorption mechanism, which comprises a wire rope and a fixed element which respectively fixes the wire rope on the main board and the shell, thereby the wire rope is supported between the main board and the shell on a vertical direction. The utility model provides the industrial main board for the numerical control system, the industrial main board has the advantages of high integration, excellent earthquake prevention effect, less line interference, superior earthquake prevention performance, the earthquake resistance strength is thrice the acceleration of the gravity.