FIELD: test equipment.
SUBSTANCE: pulse impact device includes a housing, a piezoelectric dynamometre and an impact element. The latter is quick-replaceable, located coaxially to the housing, made from an elastomer and is attached by means of a sleeve to a membrane transmitting element fixed on a cylindrical housing by means of a flange located perpendicular to the housing axis. Membrane transfer element is located inside the housing and coaxially to it. It has a cylindrical-conical part installed in the housing with a toroidal gap in lower part, which has the shape of a petal in the section of toroid-forming surface. Membrane transfer element is connected through threaded part of a pin located along the housing axis to basic mass of the impact device, which contacts the piezoelectric dynamometre placed in a dielectric protective cover. Stress occurring as a result of impact or random effect is released from the piezoelectric dynamometre through a contact element fixed in the housing and connected through a wire to the contact element fixed in a hollow cylindrical handle of impact action. The wire is fixed in the clamp rigidly attached to outside surface of the handle, the axis of which is located perpendicular to the housing axis and which is rigidly fixed through threaded part in a threaded hole of basic mass. Additional mass of the impact device, which is made in the form of a cylinder, is located above it, and an axisymmetric threaded hole is made in it; threaded part of the projection, which is an integral part of basic mass that is attached to the housing, enters the above axisymmetric threaded hole. The head of the pin that attaches basic mass of the impact device to the membrane transmitting element through the piezoelectric dynamometre, in which there is a central axisymmetric hole through which a smooth cylindrical part of the pin passes, rests upon end surface of the threaded part of the projection.
EFFECT: enlarging frequency range of vibration accelerations and dynamic loading at application of the specified spectrum of vibration excitation.
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