Abstract: A connection assembly for articulated chains which comprise mutually-pivoted links that are split between at least one initial link and at least one terminal link. The assembly comprises transverse holes of the initial link and of the terminal link, which are arranged in mutual alignment when the initial and terminal links are in the coupling configuration; a master pin, with shape and dimensions substantially complementary to those of the holes and adapted to be inserted into those holes in order to couple the initial and terminal links; at least one elastic peg that can be accommodated, with elastic forcing thereof, in at least one respective radial channel which is defined, in its outermost parts, on at least one link chosen from between the initial link and the terminal link and, in its innermost part, on the master pin.

Abstract: A connection assembly for articulated chains which comprise mutually-pivoted links that are split between at least one initial link and at least one terminal link. The assembly comprises transverse holes of the initial link and of the terminal link, which are arranged in mutual alignment when the initial and terminal links are in the coupling configuration; a master pin, with shape and dimensions substantially complementary to those of the holes and adapted to be inserted into those holes in order to couple the initial and terminal links; at least one elastic peg that can be accommodated, with elastic forcing thereof, in at least one respective radial channel which is defined, in its outermost parts, on at least one link chosen from between the initial link and the terminal link and, in its innermost part, on the master pin.

Abstract: A tensioning device has an inner end plate mounted on a frame, a sleeve fixed to the end plate and extending along an axis toward an idler wheel over which is spanned a flexible endless element (e.g. a drive chain or conveyor belt), and an axially compressible stack of inner and outer spring rings. The stack is closely surrounded by the sleeve, forms an annular friction spring, and has one end bearing axially on the plate and an opposite end. An outer end plate bears axially toward the frame end plate on the opposite end of the annular friction spring, and a hydraulic unit is braced axially between the outer end plate and the idler wheel. The inner spring rings have substantially frustoconical outer surfaces and the outer spring rings have substantially frustoconical inner surfaces engaging the outer surfaces of the inner rings.

Abstract: In order to create a track roller for crawler chains, consisting of a track oller body, an axle traversing the same as well as bearings and seals arranged between the track roller body and the axle, whereby the axle is affixed to a mount with its ends axially protruding from the track roller body, which has a long life when used as intended, the invention proposes that the bearings (3) radially arranged between the track roller body (1) and the axle (2) be designed as pivoting bearings, so that the load-caused bending of the track roller body or the axle can follow without jamming.