Railway truck having bolster-suspended traction motor

Patent metadata

Field	Value
Publication number	US-9302685-B2
Application number	US-201514681982-A
Country	US
Kind code	B2
Filing date	Apr 8, 2015
Priority date	Oct 31, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A two-axle sub-truck is disclosed. The two-axle sub-truck may include a first axle and a second axle. The two-axle sub-truck may also include a first traction motor located between the first and second axles and a second traction motor located outside the first and second axles.

First claim

What is claimed is:

1. A two-axle sub-truck, comprising:
a first axle;
a second axle;
a first traction motor located between the first and second axles; and
a second traction motor located outside the first and second axles
a bolster assembly comprising:
a span bolster having a first end and an opposing second end;
a pivot pin located at a general longitudinal and transverse center of the span bolster and connected to an upper surface of the span bolster;
a mounting member configured to receive a torque reaction link at an end of the bolster assembly at a bottom surface; and
a safety hook connected to the bottom surface of the bolster assembly and positioned adjacent to the mounting member, wherein the safety hook is configured to slidingly engage a bracket.

2. The two-axle sub-truck of claim 1 , further including:
a first torque reaction link suspended from an end of the bolster assembly and pivotally connected to the first traction motor; and
a second torque reaction link suspended from the bolster assembly and pivotally connected to the second traction motor.

3. The two-axle sub-truck of claim 2 , wherein each of the first and second torque reactions link includes a rigid member with a first pivot end and a second pivot end.

4. The two-axle sub-truck of claim 3 , wherein:
the first pivot end is configured to pivot in a first direction; and
the second pivot end is configured to pivot in a second direction generally orthogonal to the first direction.

5. The two-axle sub-truck of claim 1 , wherein the first traction motor is associated with a leading one of the first and second axles of the railway truck relative to a travel direction of the railway truck.

6. The two-axle sub-truck of claim 1 , wherein the first traction motor is associated with a trailing one of the first and second axles of the railway truck relative to a travel direction of the railway truck.

7. The two-axle sub-truck of claim 6 , wherein the first and second torque reaction links are associated with a trailing side of the first and second traction motors relative to the travel direction of the railway truck.

8. The two-axle sub-truck of claim 7 , wherein the first and second torque reaction links are associated with a leading side of the first and second traction motors relative to the travel direction of the railway truck.

9. The two-axle sub-truck of claim 1 , wherein:
the mounting member is a first mounting member; and
the bolster assembly further includes a substantially identical second mounting member at the opposing second end of the bolster assembly.

10. The two-axle sub-truck of claim 9 , further including third and fourth substantially identical mounting members, wherein each of the third and fourth mounting members is located between the first and second mounting members.

Assignees

• Electro Motive Diesel Inc
• Electro Motive Diesel Inc

Inventors

• Goding David J

Classifications

• B61C17/00

  Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems · CPC title

• B61F3/04 Primary

  with driven axles or wheels · CPC title

• B61C5/00

  Locomotives or motor railcars with IC engines or gas turbines (characterised by power transmission B61C9/00; engines F02) · CPC title

• B61F5/08

  incorporating rubber springs · CPC title

• B61F5/04

  Bolster supports or mountings (side bearings B61F5/14) · CPC title