METHOD OF IN-PLACE DIAGNOSTICS OF SHIP'S STEERING UNITS TECHNICAL CONDITION CHANGES AS A RESULT OF THE ICE LOADS IMPACT AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC G01L5/16 

FIELD: shipbuilding.

SUBSTANCE: method and the device for its implementation belong to the field of shipbuilding, in particular to the ship's steering wheels technical condition diagnosing methods without disassembly while vessels are afloat. Method and device can be used to diagnose the steering devices technical condition of ice and other classes of ships, in the design of which provision is made for the use of split radial-axial bearings with liners made of non-metallic polymeric materials (for example, polyamide). Method provides for a continuous synchronous measurement in the process of direct operation of the vessel afloat in ice navigation or on clean water of the baller head vibration acceleration of horizontal and vertical oscillations parameters, of the ship’s hull vibration in the area of the steering device base, of the outer bearing housing tension / compression deformations, torque and axial force on the baller neck, subsequent processing of primary measurement data in on-line and post-processing modes. Detecting, identification and mapping of deviations (violations) in the rudder technical condition by comparing the current data of actual measurements of diagnostic parameters obtained by postprocessing results, with the particular vessel particular steering device "spectral history" average statistical limits, formed during operation under various types and modes of ship maneuvering in various types of ice conditions, and also with the initial preliminary data of preliminary virtual simulation dynamic simulation results. Device for the method implementation is an information and measuring hardware-software complex, including: two three-component piezo-accelerometers, one of which is mounted on the baller head, and the second is onto the steering device base plate with orientation in accordance with the axes of the ship's coordinate system; strain-resisting full-bridge sensor mounted onto the baller neck with an orientation of 45° relative to the baller vertical axis; strain-resisting full-bridge sensor mounted onto the baller neck with the orientation parallel to the baller vertical axis; twelve strain-resistor full-bridge sensors installed onto the outer bearing housing vertical plane along the circumference; twelve strain-resistor full-bridge sensors installed onto the outer bearing housing base horizontal plane along the circumference; electronic multi-channel control, collection and primary processing of measurements analog data unit installed in the ship's tiller compartment; server of measurements databases collection and storage installed in a special server room of the vessel; operator's workstation, installed in the room, intended for the control panel of automated control system over the vessel technical facilities (ACS TF).

EFFECT: technical result consists in expansion of the technological capabilities of the ship's rudders technical condition diagnosing, increasing its reliability and efficiency.

4 cl, 2 dwg