Railcar truck bolster
A rail car truck bolster wear plate surface connects to a wear plate using two fasteners of different length. The first fastener passes through an upper opening and an upper channel into a first recess where it can be tightened against a first engaging surface. The second fastener is longer than the first fastener and passes through a lower opening and lower channel into a second recess adjacent to the first recess. The surfaces of the first and second recesses form a series of ribs in the upper end surface between the wear plate surface and the longitudinal centerline of the bolster.
1. A rail car truck bolster comprising:
a first end configured to engage with a side frame of a rail car truck, the first end having:
an upper end surface extending generally parallel with an upper surface of the rail car truck bolster;
at least one wear plate surface configured to engage with a wear plate, the wear plate surface extending downward from the upper surface at an angle, the wear plate surface comprising an upper bolt hole and a lower bolt hole;
a first recess within the upper end surface, the first recess having a first engaging surface extending generally parallel to the wear plate surface and a first reclining surface extending generally perpendicular to the first engaging surface, and a second recess within the upper end surface, the second recess having a second engaging surface extending generally parallel with the wear plate surface and the first wear plate surface and a reclining surface extending generally perpendicular to the second engaging surface;
wherein the first and second engaging surface and the first and second reclining surfaces collectively form ribs arranged in a W-shaped cross section.
2. The rail car truck bolster of claim 1 , wherein the second engaging surface extends between the first reclining surface and the second reclining surface.
3. The rail car truck bolster of claim 2 , wherein the upper bolt hole extends between the wear plate surface and the first engaging surface of the first recess of the upper end surface, and wherein the lower bolt hole extending between the wear plate surface and the second engaging surface of the second recess of the upper end surface.
4. The rail car truck bolster of claim 3 , wherein the upper bolt hole is configured to receive a first fastener and the lower bolt hole is configured to receive a second fastener longer than the first fastener to attach the wear plate to the wear plate surface.
5. The rail car truck of claim 1 , wherein the first fastener is received within the upper bolt hole and the second fastener is received within the lower bolt hole.
6. The rail car truck of claim 5 , wherein the second fastener is longer than the first fastener.
7. A rail car truck comprising
a first and second side frame,
a bolster, the bolster comprising:
a first end configured to engage with the first side frame and a second end configured to engage with the second side frame, the first end having:
an upper end surface extending generally parallel with an upper surface of the rail car truck bolster;
at least one wear plate surface, the wear plate surface extending downward from the upper surface at an angle, the wear plate surface comprising an upper bolt hole and a lower bolt hole;
a first recess within the upper end surface, the first recess having a first engaging surface extending generally parallel to the wear plate surface and a first reclining surface extending generally perpendicular to the first engaging surface, and
a second recess within the upper end surface, the second recess having a second engaging surface extending generally parallel with the wear plate surface and the first wear plate surface and a reclining surface extending generally perpendicular to the second engaging surface; and
a wear plate engaged to the wear plate surface via at least a first and second fastener; and
a friction wedge configured to engage with the wear plate;
wherein the first and second engaging surface and the first and second reclining surfaces collectively form ribs arranged in a W-shaped cross section.
8. The rail car truck of claim 7 , wherein the second engaging surface extends between the first reclining surface and the second reclining surface.
9. The rail car truck of claim 8 , wherein the upper bolt hole extends between the wear plate surface and the first engaging surface of the first recess of the upper end surface, and wherein the lower bolt hole extending between the wear plate surface and the second engaging surface of the second recess of the upper end surface.
10. The rail car truck of claim 7 , wherein the second end also includes:
an upper end surface extending generally parallel with an upper surface of the rail car truck bolster;
at least one wear plate surface configured to engage with a wear plate, the wear plate surface extending downward from the upper surface at an angle, the wear plate surface comprising an upper bolt hole and a lower bolt hole;
a first recess within the upper end surface, the first recess having a first engaging surface extending generally parallel to the wear plate surface and a first reclining surface extending generally perpendicular to the first engaging surface, and
a second recess within the upper end surface, the second recess having a second engaging surface extending generally parallel with the wear plate surface and the first wear plate surface and a reclining surface extending generally perpendicular to the second engaging surface,
wherein the upper bolt hole of the second end extends between the wear plate surface of the second end and the first engaging surface of the first recess of the upper end surface of the second end, and wherein the lower bolt hole of the second end extends between the wear plate surface of the second end and the second engaging surface of the second recess of the upper end surface of the second end.
11. A method of installing a wear plate onto a rail car truck bolster, the rail car truck bolster having a first end that engages with a side frame of a rail car, the first end having an upper end surface extending generally parallel with an upper surface of the bolster, wear plate surface extending downward from the upper surface at an angle, the wear plate surface comprising an upper bolt hole and a lower bolt hole, and a first and second recess within the upper end surface, the method comprising:
inserting a first fastener through a first lower bolt hole so that a distal end of the first fastener extends into the first recess,
inserting a second fastener through the second lower bolt hole so that a distal end of the second fastener extends into the second recess,
securing the first fastener by applying a first connector to the distal end of the first fastener and tightening the first connector against a first reclining surface of the first recess, and
securing the second fastener by applying a second connector to the distal end of the second fastener and tightening the second connector against a second reclining surface of the second recess,
wherein the second fastener is longer than the first fastener.
12. A rail car truck bolster comprising:
a first end configured to engage with a side frame of a rail car truck, the first end having:
a first end configured to engage with a side frame of a rail car truck, the first end having:
an upper end surface extending generally parallel with an upper surface of the rail car truck bolster;
at least one wear plate surface configured to engage with a wear plate, the wear plate surface extending downward from the upper surface at an angle, the wear plate surface comprising an upper bolt hole and a lower bolt hole;
a first recess within the upper end surface, the first recess having a first engaging surface extending generally parallel to the wear plate surface and a first reclining surface extending generally perpendicular to the first engaging surface, and
a second recess within the upper end surface, the second recess having a second engaging surface extending generally parallel with the wear plate surface and the first wear plate surface and a reclining surface extending generally perpendicular to the second engaging surface;
wherein the first and second engaging surface and the first and second reclining surfaces collectively form ribs arranged in a W-shaped cross section
wherein the upper bolt hole extends between the wear plate surface and the first engaging surface of the first recess of the upper end surface, and wherein the lower bolt hole extending between the wear plate surface and the second engaging surface of the second recess of the upper end surface
wherein the upper bolt hole is configured to receive a first fastener and the lower bolt hole is configured to receive a second fastener longer than the first fastener to attach a wear plate to the wear plate surface.