RUBBER-METAL HINGE FOR THE TRACK CHAIN OF A VEHICLE Russian patent published in 2021 - IPC B62D55/20 B62D55/215 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the field of transport engineering, namely, to tractor building, and can be used for track chains. The rubber-metal hinge for the track chain of a vehicle comprises rubber rings (1) secured on the pin (2) of the hinge, and metal elements constituting limiters of the radial deformation of the rubber rings (1), the thickness whereof is less than the thickness of the rubber rings by the value of the permissible elastic eccentricity of the hinge, pressed onto the pin of the hinge in the gaps between the rubber rings (1). The metallic elements are made of two sleeves (3, 4) pressed onto the pin of the hinge, installed whereon at the same distance from the rubber rings is a ring freely rotating relative to the sleeve, with a protrusion on the inner surface located between the sleeves (3, 4) and directed towards the pin (2) to limit the axial movement of the ring relative to the sleeves, wherein the axial section of the sleeves (3, 4) and the protrusion is made rectangular, wherein the outer surface of the metal ring (5) is made in the form of the outer side surface of a circular barrel formed by rotation of the pin (5) around the axis of symmetry, located with the convex side facing outward from the axis in the plane passing through said axis and symmetrically to the plane of the arc of a circle perpendicular to the axis of symmetry of the pin (5), with the radius R=L²/(4(D-d))+(D-d)/4, wherein D is the inner diameter of the eyelet (7), d is the outer diameter of the pin (5), L is the length of the eyelet (7).

EFFECT: increase in the reliability and durability of operation of the rubber-metal hinge.

1 cl, 2 dwg