Composite railway sleeper
AssigneeGREENRAIL S.r.l.
InventorGiovanni Maria De Lisi
Life of this patent
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Abstract
A composite railway sleeper (1; 50; 100) comprising an outer coating shell (2; 51; 101) made of composite plastic material and a shaped structural core (3; 52; 102), made of a material comprising at least concrete contained within said outer coating shell (2; 51; 510; 101), wherein said outer coating shell (2; 51; 510; 101) presents in the upper outer face (2a; 51a; 101a) two distinct and opposite groups of grooves (4; 53) suitable to receive the angular guide plates (G) belonging to pre-assembled elastic type fastening systems (64) for the connection of two respective rails (R) with said railway sleeper (1; 50; 100).
Claims18
A composite railway sleeper comprising:
- an outer coating shell made of composite plastic material;
- and
- a shaped structural core, made of a material comprising at least a prestressed reinforced concrete contained within said outer coating shell,
- characterized in that said outer coating shell comprises in an upper outer face two distinct and opposite groups of grooves suitable to receive angular guide plates belonging to pre-assembled elastic rail fastening systems for connection of two respective rails with said railway sleeper and further in that said material of said shaped structural core comprises steel in a shape of outlined stiffening engagements embedded in said concrete, wherein the material of said shaped structural core further comprises a mixture of plastic material and recycled rubber in a pair of composite blocks embedded in said concrete and connected to each other through one or more steel bars embedded in said concrete, characterized in that said outlined stiffening engagements are welded to a folded containment and support sheet, further characterized in that each of said outlined stiffening engagements comprises at least one side edge with a guide tooth that fits into a channel of vertical engagement made in at least one opposite side of each said composite blocks.
Railway track comprising:
- a pair of rails parallel and spaced apart each other by a prefixed gauge;
- a plurality of composite railway sleepers, arranged at least predominantly between said rails one consecutive and spaced apart each other in such a way as to define linear directions parallel each other and in a direction defined by said rails and suitable to be placed superiorly close a ballast foundation bed, each of said composite railway sleepers including:
- an outer coating shell made of composite plastic material;
- a shaped structural core, made of a material comprising at least a prestressed reinforced concrete contained within said outer coating shell;
- pre-assembled elastic rail fastening systems which connect each of said rails with said railway sleeper,
- characterized in that said outer coating shell further comprises in an upper outer face two distinct and opposite groups of grooves which receive angular guide plates of said pre-assembled elastic rail fastening systems and further in that said material of said shaped structural core comprises steel in a shape of outlined stiffening engagements embedded in said concrete wherein the material of said shaped structural core further comprises a mixture of plastic material and recycled rubber in a pair of composite blocks embedded in said concrete and connected to each other through one or more steel bars embedded in said concrete, characterized in that said outlined stiffening engagements are welded to a folded containment and support sheet, further characterized in that each of said outlined stiffening engagements comprises at least one side edge with a guide tooth that fits into a channel of vertical engagement made in at least one opposite side of each said composite blocks.
A composite railway sleeper comprising:
- an outer coating shell made of composite plastic material;
- and
- a shaped structural core, made of a material comprising at least a prestressed reinforced concrete contained within said outer coating shell,
- characterized in that said outer coating shell comprises in an upper outer face two distinct and opposite groups of grooves suitable to receive angular guide plates belonging to pre-assembled elastic rail fastening systems for connection of two respective rails with said railway sleeper and further in that said material of said shaped structural core comprises steel in a shape of outlined stiffening engagements embedded in said concrete, wherein the material of said shaped structural core further comprises a mixture of plastic material and recycled rubber in a pair of composite blocks embedded in said concrete and connected to each other through one or more steel bars embedded in said concrete, characterized in that said outlined stiffening engagements are welded to a folded containment and support sheet, further comprising a metallic reinforcement plate stably coupled above said shaped structural core and contained inside said outer coating shell, characterized in that said metallic reinforcement plate presents a plurality of through slots suitable to allow passage of said concrete when it is injected into said folded containment and support sheet.
Railway track comprising:
- a pair of rails parallel and spaced apart each other by a prefixed gauge;
- a plurality of composite railway sleepers, arranged at least predominantly between said rails one consecutive and spaced apart each other in such a way as to define linear directions parallel each other and in a direction defined by said rails and suitable to be placed superiorly close a ballast foundation bed, each of said composite railway sleepers including:
- an outer coating shell made of composite plastic material;
- a shaped structural core, made of a material comprising at least a prestressed reinforced concrete contained within said outer coating shell;
- pre-assembled elastic rail fastening systems which connect each of said rails with said railway sleeper,
- characterized in that said outer coating shell further comprises in an upper outer face two distinct and opposite groups of grooves which receive angular guide plates of said pre-assembled elastic rail fastening systems and further in that said material of said shaped structural core comprises steel in a shape of outlined stiffening engagements embedded in said concrete, characterized in that said outlined stiffening engagements are welded to a folded containment and support sheet;
- further comprising a metallic reinforcement plate stably coupled above said shaped structural core and contained inside said outer coating shell, characterized in that said metallic reinforcement plate presents a plurality of through slots suitable to allow passage of said concrete when it is injected into said folded containment and support sheet.
Dependencies are inferred from the claim text.