SLEEPER PAD AND METHOD FOR ITS MANUFACTURE, CONSTRUCTION OF RAILWAY SLEEPER WITH SLEEPER PAD FIXED IN IT AND METHOD FOR CONNECTING SLEEPER PAD WITH RAILWAY SLEEPER Russian patent published in 2021 - IPC E01B3/42 E01B3/46 

FIELD: track superstructure elements.

SUBSTANCE: inventions group relates to the field of elements of the superstructure of the track, in particular to sleeper pads, methods for their manufacture, concrete sleepers containing such a lining, and methods for manufacturing concrete sleepers with lining. The lining contains two polymer layers and vertical projections. The rigidity of the polymer layers is different. The protrusions are made in the form of mushroom-shaped bodies of revolution. All transition areas of the protrusions are rounded. Two through holes are made in the middle part of the gasket. The molding of the protrusions and the connection of the lining layers are carried out in one process. In the manufacture of the sleepers, the concrete mass is poured into a mold. Two embedded elements are installed in the sleeper. The position of the embedded elements corresponds to the position of the holes in the backing. The lining is oriented according to the embedded elements and embedded in concrete. Vibration compaction of concrete is carried out under load through the lining.

EFFECT: increased reliability and durability of the sleeper-lining connection.

12 cl, 6 dwg