Concrete crosstie
OwnerMauricio Javier Gutierrez Romeroinventor
Life of this patent
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Abstract
A monoblock concrete crosstie for railway tracks that achieves a high performance in operation includes a steel structure that is formed from ultra-resistant high strength steel plates embedded in a concrete element and having pre-stressed cold rolled wires with ends that form button head knots which are anchored to the steel plates. The crosstie includes rail seats with a convex channeled formation that is mateable with an extending member of a faceplate wherein the railseat has a width less than the width of the faceplate, and a center of the face plate has a first distance from a center of the concrete element and a center of the rails seat has a second distance from the center of the concrete element, the first distance greater than the second distance.
Claims20
A monoblock pre-stressed concrete crosstie for use in ballasted railways comprising:
- an elongated concrete element having a longitudinal axis;
- an internal steel structure of the concrete element comprising one or more reinforced steel plates, each having a first tensioning structure configured for connection to an external tensioning device and a second tensioning structure coupled to a steel element that is internal to the crosstie, and a system of reinforced, u-shaped plates and pre-stressed wires embedded in high strength concrete capable of supporting a minimum axle load of 41 tons (US), and where the crosstie has a maximum length of 8 feet and 6 inches;
- a rail seat of the concrete element;
- and
- a face plate assembly having an extending member and the extending member mateable with the rail seat;
- wherein the railseat has a width less than the width of the faceplate, and a center of the face plate has a first distance from a center of the concrete element and a center of the rails seat has a second distance from the center of the concrete element, the first distance greater than the second distance.
A monoblock pre-stressed concrete crosstie for use in ballasted railways comprising:
- an elongated concrete element having a longitudinal axis;
- an internal steel structure of the concrete element comprising one or more reinforced steel plates, each having a first tensioning structure configured for connection to an external tensioning device and a second tensioning structure coupled to a steel element that is internal to the crosstie, wherein the internal steel structure is formed by two or more first u-shaped plates at a first end and two or more second u-shaped plates at a second end, each of the first u-shaped plates coupled to one of the second plates by a plurality of pre-stressed wires, wherein each wire is tensioned to at least 70% (seventy percent) of its elastic capacity, wherein the plurality of pre-stressed wires are arranged in parallel, and wherein each of the plurality of pre-stressed wires is secured to one or more of the plates by pressed button head type knots located at the wire ends;
- a rail seat of the concrete element;
- and
- a face plate assembly having an extending member and the extending member mateable with the rail seat;
- wherein the railseat has a width less than the width of the faceplate, and a center of the face plate has a first distance from a center of the concrete element and a center of the rails seat has a second distance from the center of the concrete element, the first distance greater than the second distance.
Dependencies are inferred from the claim text.