METHOD TO DETERMINE TORSIONAL COMPLIANCE OF HYDROMECHANICAL TRANSMISSION Russian patent published in 2014 - IPC G01M17/07 

FIELD: measurement equipment.

SUBSTANCE: invention refers to the method for the determination of torsional compliance of hydromechanical transmission. The method involves loading of a ground layer by tracks of a caterpillar tractor with hydromechanical transmission which is fixed by a force measuring device motionlessly, smooth increase of the load, recording of the grouser tangential force value for the ground, measurement of the ground deformation, drawing of a dependence diagram of the ground deformation on the grouser tangential force value for the ground, considering the breaking point in the line of the diagram the maximum grouser tangential force value for the ground is determined, following are recording of the rotation angle of the tractor drive sprocket, drawing of a dependence diagram of tractor drive sprocket rotation angle on the grouser tangential force for the ground. Complete rotation angle of the tractor drive sprocket is determined by the breaking point in the line of the diagram. The drive sprocket rotation angle relevant to the maximum elastic shear deformation of the ground is calculated. The sum angle of the transmission torsion φ_TR is defined as the difference of the complete angle of the tractor drive sprocket and the drive sprocket rotation angle. The total torsional compliance of the hydromechanical transmission is defined by the ratio $$l_K=\frac{{\phi }_{TR}}{P_K^O\cdot r_K},$$ where r_K stands for the radius of the tractor drive sprocket, $$P_K^O$$ - grouser tangential force for the ground corresponding to the sum angle of the transmission torsion φ_TR.

EFFECT: technical result consists in the possibility to determine dynamic characteristics of transmission.

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