Uniformly distributed load fatigue testing machine for tunnel protective door

The invention discloses a uniform load fatigue testing machine for a tunnel protective door. The fatigue testing machine comprises an actuator, a force transmission frame and a sample fixing clamping seat, and further comprises the following components: elastic bodies formed by pouring and curing, and a to-be-tested tunnel protective door arranged between the elastic bodies; the tunnel protection door is mounted and fixed on the sample fixing clamping seat; an upper truss is fixed at the upper part of the elastic body, and a lower truss is fixed at the lower part of the elastic body; and the elastic body tray bottom plate is used for fixing the elastic body. The fatigue testing machine can be used for tension and compression bidirectional fatigue test, and has the advantages of high test precision, wide detection range and high efficiency; compared with the existing fatigue testing machine, the fatigue testing machine disclosed by the invention can realize uniform load distribution and uniform stress on the s