The invention discloses a device for testing rigidity of a semi-rigid bearing. The device for testing the rigidity of the semi-rigid bearing comprises a driving piece and a fixing
assembly, wherein atesting shaft is arranged between the driving piece and the fixing
assembly, a to-be-tested
station is arranged on the testing shaft, and a fixing shell is arranged on the to-be-tested
station; the driving piece comprises a connecting rod and a
hydraulic cylinder, the connecting rod is matched with the testing shaft in a clamping connection mode, and a telescopic type displacement sensor and a
pressure sensor are arranged on the testing shaft; the fixing
assembly comprises a fixing clamping tool, and the fixing clamping tool comprises a
threaded rod, an annular installing seat and two clampingjaws; the clamping jaws are hinged to the annular installing seat, one ends of the clamping jaws are located in the annular installing seat and abut against the
threaded rod to form driving ends, andthe other ends of the clamping jaws are located on the two sides of the fixing shell to form clamping ends; and the
threaded rod is matched with the fixing shell in a threaded mode, an inclined surface is arranged on the threaded rod, and the threaded rod and the annular installing seat are relatively slidably arranged. According to the device for testing the rigidity of the semi-rigid bearing, the effect of fixing a to-be-tested bearing is good, the testing data are comprehensive and exact, and the testing precision is high.