DEFINITION METHOD OF COEFFICIENT OF ROLLING RESISTANCE OF WHEEL WITH PNEUMATIC TIRE AND DEVICE FOR ITS FULFILMENT Russian patent published in 2008 - IPC G01M17/02 

FIELD: transportation.

SUBSTANCE: coefficient of rolling resistance of wheel with pneumatic tire while trailing is defined according to the parameters of elliptical-sedate model, absorbing the tire abilities according to the formula , where k₁ - is coefficient of proportionality between contact stain length and average tire deflection; H_t, n - parameters of elliptical-sedate model (coefficient of proportionality and index of power correspondingly); h_zmax - complete tire deflection in radial direction; r_d - wheel dynamic radius; P_z- wheel average loading. Device for coefficient of rolling resistance of wheel with stuck tensresistors pneumatic tire detection contains frame connected with trailing machine, axle with which is instrument movement of average loading. There are tensresisting sensors in the device, which are connected through current collector with measuring circuit. At that for measuring of tire imprint length current conductor is added to the construction, which is put along the wheel movement course at the distance, providing contact of the conductor and stated frame transverse slab.

EFFECT: tire drains characteristics definition for evaluation of its quality and estimation of machine exploitation characteristics.

3 cl, 4 dwg