RUNNING GEAR OF CATERPILLAR MACHINE EQUIPPED WITH CATERPILLAR TRACK WITH PARALLEL HINGE, PROVIDING REDUCTION OF DYNAMIC AND THERMAL LOADING OF STRUCTURE ELEMENTS Russian patent published in 2024 - IPC B62D55/20 

FIELD: machine building.

SUBSTANCE: invention relates to modernization of running gear of tracked vehicles. Running gear of tracked vehicle equipped with caterpillar track with parallel hinge differs from known method of elimination of high-frequency resonance oscillations in elements of running gear of tracked vehicles on the basis of implementation of the theory of parametric oscillations. Essence consists in the fact that in addition, a design dynamic scheme of interaction of the road roller tire - the caterpillar track is made, finite element simulation of the road roller rolling along the caterpillar track is performed, a non-linear function of stiffness in the contact and the modulation depth of the elastic interaction stiffness are determined, parameters of the calculated dynamic scheme are identified, the Mathieu equation is constructed and presented in the parameters of the Ince–Strutt diagram, the oscillation stability regions are analysed, the required value of the stiffness modulation depth parameter is determined, which provides expansion of the stability regions or complete elimination of the possibility of occurrence of parametric resonance oscillations taking into account the effect of dissipative forces. Further, in order to realize the results, protrusions or chamfers of various shapes are additionally introduced into the design of the tracks. Track design version, providing minimum distance between plate and track eye, additionally equipped with protrusions at right half-track from front eye, at the left semi-track from the rear eye, which made it possible to provide the necessary overlapping of adjacent tracks in the gap of zigzag type and to exclude their bumping into each other during movement around the drive wheel. At the same time the value of modulation depth parameters is = 0.01 with other conditions being equal.

EFFECT: this version of running gear design provides complete exclusion of excitation of parametric resonance oscillations, which creates preconditions for reduction of dynamic and thermal loading of elements of running gear of tracked vehicle.

1 cl, 8 dwg