Testing device for dynamic rigidity of engine suspension

The invention relates to a testing device for dynamic rigidity of an engine suspension, wherein the testing device belongs to the field of vehicle vibration testing. The testing device comprises the components of a control system, an exciting system, a force sensor, an acceleration sensor, a to-be-tested suspension, a pre-loading mass block, a base and bolts, wherein the control system is composed of a 32-channel LMS data acquisition system and a power amplifier, and the exciting system is composed of a vibration exciter, an exciting rod and a hammer. The control system makes the vibration exciter generate an exciting force for generating an engine dynamic load. The sensor acquires a response and transmits the response to an LMS data acquisition system. In the LMS data acquisition system, data processing is performed for obtaining the dynamic rigidity of the to-be-tested suspension. Compared with prior art, the testing device is advantageous in that vibration exciter loading is utilized; force bearing conditi