Earthquake-proof bed provided triangular supporting structures

The invention discloses an earthquake-proof bed provided with triangular supporting structures. The earthquake-proof bed comprises a bed frame, an upper bed board device and a sliding rod device, wherein the bed frame comprises a lower bed board, supporting legs, an upper bed board supporting pole, a ladder, an inner ladder, support frames I and a bolt cover I. The triangular plate mechanisms comprises rotary plates provided with guide grooves and rotary plates II; the two rotary plates provided with guide grooves are hinged on the upper bed board; the two rotary plates II are arranged in therotary plates, wherein the two rotary plates II are connected via hinges, so that a triangular plate mechanism, which can be bent into a triangle, is defined; and the upper bed board is welded on theupper bed board supporting pole. The earthquake-proof bunk bed adopts pure mechanical equipment coordination and device invalid in an earthquake process can be avoided; problems of existing earthquake-proof bunk beds which are