Inherent frequency comprehensive testing platform capable of applying pretightening force

The invention relates to an inherent frequency comprehensive testing platform for aerial thin-walled pieces capable of applying pretightening force of different intensities. The inherent frequency comprehensive testing platform is divided into a testing system, a data acquisition system, and a data analyzing and processing system and comprises a base, a first movable end, a second movable end, a handle, a locating plate, a screw rod, an acceleration sensor, an elastic force hammer, a force sensor, a thin-walled test piece, a computer, a DASP, an intelligent controller (transmitter), a cotter pin, a spring, a check ring, a first threaded connecting rod and a second threaded connecting rod. Compared with the prior art, the inherent frequency comprehensive testing platform has the advantages of being simple in structure and clear in testing principle, the dynamic characteristic parameters of the thin-walled pieces under different load-up conditions can be measured by rotating the handle to change the pretightening force, experimental results are analyzed by combining computer software, and the inherent frequency comprehensive testing platform has high efficiency, stability and precision.