Repozytorium publikacji - Politechnika Gdańska

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Repozytorium publikacji
Politechniki Gdańskiej

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The methodology of design of axial clearances compensation unit in hydraulic satellite displacement machine and their experimental verification

A new methodology of calculating the dimensions of the axial clearance compensation unit in the hydraulic satellite displacement machine is described in this paper. The methods of shaping the compensation unit were also proposed and described. These methods were used to calculate the geometrical dimensions of the compensation field in an innovative prototype of a satellite hydraulic motor. This motor is characterized by the fact that the body rotates. In other words, the planet (an inner element of the working mechanism) is stationary and the curvature (an external element of the working mechanism) is rotating. The inflow and outflow ports are located in the motor pin which replaces its shaft. The results of the analytical calculation of the compensation field geometrical dimensions were used in FEM calculations of the compensation plate deformation. The correctness of the design of axial clearance compensation unit has been verified experimentally. The experimental method consists in measuring leaks in the gaps of the working mechanism and measuring the torque at low constant speed of the motor case. The results of experimental test are also described in this paper. This way, it has been proven that the proposed new analytical methodology for the design of the axial clearance compensation unit in the hydraulic satellite displacement machine is correct.

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