HYDRAULIC TESTING MACHINE Russian patent published in 2014 - IPC G01N3/08 

FIELD: testing equipment.

SUBSTANCE: invention relates to the testing technique for determining the mechanical properties of materials and products. The preferred area of application is examination of the performance characteristics of anti-seismic hydraulic shock-absorbers of nuclear reactors and other nuclear power plant equipment. The peculiarity of the testing hydraulic machine consists in the fact that the main power hydraulic cylinder and the additional hydraulic cylinder are made separately, which provides simplification of the design and corresponding increase in manufacturability and maintenance. Addition to the machine structure of moving crosshead interconnected with columns by anti-friction sleeves with the sequentially connected force sensor and the grip, attached to it, and connected to the plunger of the power cylinder, it eliminates the possibility of transmission of transverse loads received by the elastic membrane, to the sensor force and the plunger of the power hydraulic cylinder independently from its outreach. Attachment of the second grip on the rod movably connected with the transverse load frame by linear hydrostatic bearing (bushing), and connection of the plunger of the additional hydraulic cylinder by the small load sensor with the rod and the grip provide smooth loading and required accuracy of measuring power.

EFFECT: increased stability of metrological parameters.

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