Energy dissipation device
AssigneeRxd - Research Exchange Development AB
InventorRoger Danielsson
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Abstract
An energy dissipation device is shown in connection with its implementation in train couplers. The energy dissipation device comprises axially compressible, irreversibly deforming steel elements arranged in a housing and axially pre-tensioned between a compression means and a counter-pressure means. In case of an impact, the compression means is moving in sliding contact with the inside wall of the housing to provide axial compression of the energy absorbing elements while preserving the integrity of the housing.
Claims20
An energy dissipation device for a train coupler adapted for absorbing kinetic energy from a collision, the energy dissipation device comprising:
- a cylindrical housing, in one end having coupling means for coupling the housing in fixed relation to a train coupler;
- at least one axially compressible, irreversibly deforming element of steel in the housing, the at least one axially compressible, irreversibly deforming element(s) extended in coaxial relation with the housing from said one end towards a second end of the housing;
- and
- a compression means retractable into the housing via said one end or said second end of the housing;
- wherein the at least one axially compressible, irreversibly deforming element is pre-tensioned axially between said retractable compression means and a counter pressure means stationary secured in the housing in an axially opposite relation to the retractable compression means in said one end or said second end of the housing, and
- wherein the retractable compression means has a circular periphery shaped for guidance in non-destructive sliding contact with an inside wall of the housing upon retraction and compression of the compressible, irreversibly deforming element, while preserving an integrity of the housing.
An energy dissipation device for a train coupler adapted for absorbing kinetic energy from a collision, the energy dissipation device comprising:
- a first telescoping member in the form of a tube of a first diameter, said tube in one end carrying coupling means for coupling the tube to a drawbar of a train coupler in coaxial alignment with a center axis of the drawbar,
- a second telescoping member in the form of a cylindrical housing of a second diameter which is larger than the first diameter, said housing in one end carrying coupling means for coupling the housing to a drawbar of a train coupler in coaxial alignment with the center axis of the drawbar,
- wherein a second end of the tube is inserted and arranged retractable into the housing via an opposite second end of the housing, and
- at least one axially compressible, irreversibly deforming element of steel in the housing, the at least one axially compressible, irreversibly deforming element extended in coaxial relation with the housing from said one end of the housing towards the second end of the housing, wherein the at least one axially compressible, irreversibly deforming element is pre-tensioned axially between the coupling means in said one end of the housing and a neck portion on a mounting flange, coupled to said second end of the housing, and
- wherein the retracting end of the tube carries a compression disc which has a circular periphery shaped for guidance in non-destructive, sliding contact with an inside wall of the housing upon retraction and compression of the at least one axially compressible, irreversibly deforming element, while preserving an integrity of the housing.
Dependencies are inferred from the claim text.