Railway truck bolster wear liner
View Patent ↗A railway truck to railway car body interface is provided. The railway truck is comprised of a bolster supported between two sideframes. The truck bolster includes a center bowl, and the car body includes a body bolster opening. A center plate is placed between the truck bolster center bowl and the car body bolster opening. A wear liner, usually comprised of an elastomeric material, is provided between the sides of the center bowl and the center plate.
1. A railway car truck interface assembly comprising:
a railway car truck bolster, the bolster including a center bowl of circular shape with a raised wall and a centrally located opening,
a horizontal wear liner received in the bolster center bowl,
a center plate having an upper section comprised of four sides and a lower section, the lower section having an outer circular edge extending downwardly from the upper section, the center plate including a centrally located opening,
the lower section of the center plate received in the bolster center bowl, with a pin extending into the centrally located opening in the bolster center bowl and into the centrally located opening in the center plate,
an annular edge wear liner between the center bowl raised wall and the outer circular edge of the lower section of the center plate, the edge wear liner including a metallic spring material; and
an undulating wall of the edge wear liner intermediate the center bowl raised wall and the outer circular edge of the lower section of the center plate;
wherein the edge wear liner has a split-ring configuration that allows the edge wear liner to be elastically compressed when the center plate is placed in the bolster center bowl.
2. The railway car truck interface assembly of claim 1 further comprising a retainer of a circular shape between a top surface of the edge wear liner and the center plate.
3. The railway car truck interface assembly of claim 1 wherein the edge wear liner includes an elastomeric material.
4. The railway car truck interface assembly of claim 1 wherein the edge wear liner is compressed when the center plate is placed in the bolster center bowl.
5. A railway car truck interface assembly comprising:
a railway car truck bolster, the bolster including a circular center bowl formed by a raised sidewall and having a centrally located opening,
a horizontal wear liner received in the bolster center bowl,
a center plate comprising a square upper section having four sides and a circular lower section, the center plate lower section having an outer circular edge extending downwardly from the upper section, the center plate including a centrally located opening,
the circular lower section of the center plate extending into the bolster center bowl, with a pin extending into the centrally located opening in the bolster center bowl and into the centrally located opening in the center plate, and
an annular edge wear liner between the center bowl raised sidewall and the outer circular edge of the lower section of the center plate, the edge wear liner including:
an elastomeric center layer;
a radially inner layer bonded to the elastomeric center layer; and
a radially outer metal layer bonded to the elastomeric center layer so that the elastomeric center layer is sandwiched between the radially inner layer and the radially outer metal layer.
6. The railway car truck interface assembly of claim 5 further comprising a retainer of a circular shape between a top surface of the edge wear liner and the center plate.
7. The railway car truck interface assembly of claim 5 wherein the edge wear liner is compressed when the center plate is placed in the bolster center bowl.
8. The railway car truck interface assembly of claim 5 wherein the edge wear liner extends without interruption around the outer circular edge of the center plate lower section.
9. The railway car truck interface assembly of claim 5 wherein the radially inner layer of the edge wear liner has a surface of a low friction material facing the outer circular edge of the lower section of the center plate.
10. A railway car truck interface assembly comprising:
a railway car truck bolster, the bolster including a center bowl of circular shape with a raised wall and a centrally located opening,
a horizontal wear liner received in the bolster center bowl,
a center plate having an upper section comprised of four sides and a lower section, the lower section having an outer circular edge extending downwardly from the upper section, the center plate including a centrally located opening,
the lower section of the center plate received in the bolster center bowl, with a pin extending into the centrally located opening in the bolster center bowl and into the centrally located opening in the center plate,
an annular edge wear liner between the center bowl raised wall and the outer circular edge of the lower section of the center plate, the edge wear liner including a metallic spring material; and
an undulating wall of the edge wear liner intermediate the center bowl raised wall and the outer circular edge of the lower section of the center plate;
wherein the edge wear liner includes an undulating tapered surface configured to direct the outer circular edge of the center plate lower section into the center bowl.
11. The railway truck interface assembly of claim 5 wherein the radially inner layer of the edge wear liner includes a sloped surface.
12. The railway truck interface assembly of claim 5 wherein the elastomeric center layer includes a curved lower surface extending between the radially inner layer and the radially outer metal layer.