Systems for a brake system

Patent metadata

Field	Value
Publication number	US-11548539-B2
Application number	US-202015930241-A
Country	US
Kind code	B2
Filing date	May 12, 2020
Priority date	May 12, 2020
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

Various methods and systems are provided for a braking system. In one example, a braking arrangement comprising a dead lever comprising a protrusion offset toward a live lever and a slack adjuster.

First claim

The invention claimed is:

1. A braking system for a vehicle truck, comprising:
a dead vertical lever comprising a protrusion extending toward a live vertical lever and a slack adjuster of the braking system, wherein a protrusion opening is positioned on the protrusion, wherein the slack adjuster is coupled to the dead vertical lever via the protrusion opening, wherein the dead vertical lever is adapted to apply a first brake shoe force on a first wheel of the vehicle truck, wherein the live vertical lever is adapted to apply a second brake shoe force on a second wheel of the vehicle truck, wherein the dead vertical lever and the live vertical lever are interconnected with one another via the slack adjuster such that the first brake shoe force is applied on the first wheel of the vehicle truck when the second brake shoe force is applied on the second wheel of the vehicle truck via the live vertical lever, and wherein, due to the slack adjuster being coupled to the dead vertical lever at the protrusion opening, the first brake shoe force applied to the first wheel of the vehicle truck is less than the second brake shoe force applied to the second wheel of the vehicle.

2. The braking system of claim 1 , wherein the dead vertical lever is arranged on an unpowered axle free of a speed sensor.

3. The braking system of claim 2 , wherein the unpowered axle is arranged between two powered axles wherein at least one of the two powered axles comprises the speed sensor.

4. The braking system of claim 1 , wherein the dead vertical lever comprises a plurality of openings including an upper opening, a middle opening, and the protrusion opening.

5. The braking system of claim 4 , wherein the slack adjuster is coupled to the protrusion opening and the live vertical lever.

6. The braking system of claim 4 , wherein a first axis passes through geometric centers of the upper opening and the middle opening, and wherein a second axis, which is oriented at an angle relative to the first axis, extends through geometric centers of the middle opening and the protrusion opening.

7. The braking system of claim 6 , wherein the angle is between 40 and 80 degrees.

8. The braking system of claim 1 , wherein the live vertical lever is free of a protrusion and wherein the dead vertical lever is arranged on an unpowered axle free of a slide detection device.

9. A rail vehicle truck, comprising:
a brake rigging arrangement for an unpowered axle of the rail vehicle truck, the brake rigging arrangement including:
a dead vertical lever, a slack adjuster, and a live vertical lever, wherein the slack adjuster is coupled to a protrusion opening arranged on a protrusion of the dead vertical lever extending toward the live vertical lever and the slack adjuster, wherein the dead vertical lever is adapted to apply a first brake shoe force on a first wheel of the vehicle truck, wherein the live vertical lever is adapted to apply a second brake shoe force on a second wheel of the vehicle truck, wherein the dead vertical lever and the live vertical lever are interconnected with one another via the slack adjuster such that the first brake shoe force is applied on the first wheel of the vehicle truck when the second brake shoe force is applied on the second wheel of the vehicle truck via the live vertical lever, and wherein, due to the slack adjuster being coupled to the dead vertical lever at the protrusion opening, the first brake shoe force applied to the first wheel of the vehicle truck is less than the second brake shoe force applied to the second wheel of the vehicle.

10. The truck of claim 9 , wherein the dead vertical lever comprises an upper opening aligned with a middle opening about a first axis, wherein the middle opening is arranged in a vertical position between the upper opening and the protrusion opening.

11. The truck of claim 10 , wherein the protrusion opening is aligned with the middle opening about a second axis, wherein the second axis is angled to the first axis.

12. The truck of claim 11 , wherein the slack adjuster is aligned with the second axis.

13. The truck of claim 10 , wherein the protrusion of the dead vertical lever extends from a vertical position of the dead vertical lever below the middle opening, wherein the protrusion extends toward the live vertical lever.

14. The truck of claim 10 , wherein the slack adjuster is coupled to the protrusion at its first extreme end, and wherein the slack adjuster is coupled to the live vertical lever at its second extreme end opposite the first extreme end.

15. A brake rigging system, comprising:
a first axle comprising a first brake rigging arrangement, wherein the first brake rigging arrangement includes a first slack adjuster coupled to a first live vertical lever, wherein the first live vertical lever is adapted to apply a first brake shoe force on a first wheel of the first axle;
a second axle comprising a second brake rigging arrangement; and
a third axle comprising a third brake rigging arrangement, wherein the second brake rigging arrangement and the third brake rigging arrangement comprise a second slack adjuster coupled to a first dead vertical lever and a second live vertical lever, wherein the second slack adjuster is coupled to a protrusion opening arranged on a protrusion of the dead vertical lever extending toward the second live vertical lever and the second slack adjuster, wherein the second live vertical lever is adapted to apply a second brake shoe force on a second wheel of the second axle, wherein the dead vertical lever is adapted to apply a third brake shoe force on a third wheel of the third axle, wherein the dead vertical lever and the second live vertical lever are interconnected with one another via the second slack adjuster such that the third brake force is applied on the third wheel of the third axle when the second brake force is applied on the second wheel of the second axle via the second live vertical lever, and wherein, due to the second slack adjuster being coupled to the dead vertical lever at the protrusion opening, the third brake shoe force applied to the third wheel of the third axle is less than the second brake shoe force applied to the second wheel of the second axle.

16. The system of claim 15 , wherein a first slack adjuster length of the first slack adjuster is greater than a second slack adjuster length of the second slack adjuster.

17. The system of claim 15 , wherein the first axle and the second axle are powered and the third axle is unpowered, wherein the third axle is free of a speed detection device and a slide detection device.

Assignees

• Transp Ip Holdings Llc

Inventors

• Zhang Jingjun
• Worden Bret D

Classifications

• B61H15/0085 Primary

  with screw-thread and nut · CPC title

• F16D49/16

  Brakes with two brake-blocks (self-tightening F16D49/20) · CPC title

• B61H13/26 Primary

  for cars or bogies with more than two axles or bogies, the mechanisms at each side being interconnected · CPC title

• B61H13/34

  Details · CPC title

• B61H9/006

  Brakes for locomotives · CPC title