Large angular rigidity turboprop engine rubber vibration isolator

The invention provides a large angular rigidity turboprop engine rubber vibration isolator with failure protection measures. According to the technical scheme, the large-angle rigidity turboprop engine rubber vibration isolator comprises a base 1, a front cover plate 4, a rear cover plate 5, four mounting plates 2 and rubber blocks 3, wherein the four mounting pates 2 are connected with the mounting base through clamping grooves; the rubber blocks 3 are symmetrically arranged between the front cover plate 4 and the mounting plate 2 and between the rear cover plate 5 and the mounting plate 2 in an up and down manner; a sleeve 6 sleeves a connecting screw rod 7; the connecting screw rod 7 penetrates through the front cover plate 4 and the rear cover plate 5; a sealing screw cap 8 is screwed on one side, on the rear cover plate 5, of the connecting screw rod 7; a threaded protecting sleeve 9 is screwed at the end part, on the rear cover plate 5, of the screw rod 7.