Brake roller with one way jaw clutch
A brake roller may comprise a brake shaft and a brake stack assembly located around the brake shaft. A one-way jaw clutch assembly may be configured to apply a force to the brake stack. A roller shell may be located radially outward of the brake stack. The one-way jaw clutch assembly may be configured to vary the force applied to the brake stack in response to a rotation of the roller shell in a circumferential direction.
1. A brake roller, comprising:
a brake shaft;
a brake stack assembly located around the brake shaft;
a one-way jaw clutch assembly configured to apply a force to the brake stack assembly; and
a roller shell located radially outward of the brake stack assembly, wherein the one-way jaw clutch assembly is configured to vary the force applied to the brake stack assembly in response to a rotation of the roller shell in a circumferential direction.
2. The brake roller of claim 1 , wherein the one-way jaw clutch assembly comprises:
a jaw plate keyed to the roller shell; and
a slider configured to translate along the brake shaft.
3. The brake roller of claim 2 , wherein the jaw plate comprises a plurality of jaw teeth extending axially toward the slider, and wherein the slider comprises a plurality of slider teeth extending axially toward the jaw plate.
4. The brake roller of claim 3 , wherein the one-way jaw clutch assembly further comprises:
a guide plate keyed to the brake shaft; and
a spring located between the guide plate and the slider.
5. The brake roller of claim 4 , wherein the one-way jaw clutch assembly further comprises a clip located in a groove defined by the brake shaft.
6. The brake roller of claim 1 , further comprising:
an axle shaft located radially inward of the brake shaft;
a unidirectional roller bearing located between the axle shaft and the brake shaft;
a ball bearing located at an end of the brake roller; and
a spacer located radially between the ball bearing and the axle shaft.
7. The brake roller of claim 6 , wherein the one-way jaw clutch assembly is located axially between the brake stack assembly and at least one of the ball bearing or the spacer.
8. The brake roller of claim 1 , further comprising:
a nut located around a threaded surface of the brake shaft;
a nut retainer located between the nut and the brake stack assembly, wherein the nut retainer is keyed to the brake shaft; and
a lock screw located through the nut and the nut retainer.
9. A roller tray for a cargo handling system, comprising:
a first rail;
a second rail parallel to the first rail; and
a brake roller located between the first rail and the second rail, the brake roller including:
a brake shaft;
a brake stack assembly located around the brake shaft;
a one-way jaw clutch assembly configured to apply a force to the brake stack assembly; and
a roller shell located radially outward of the brake stack assembly, wherein the one-way jaw clutch assembly is configured to vary the force applied to the brake stack assembly in response to a rotation of the roller shell in a circumferential direction.
10. The roller tray of claim 9 , wherein the one-way jaw clutch assembly comprises:
a jaw plate keyed to the roller shell; and
a slider configured to translate along the brake shaft.
11. The roller tray of claim 10 , wherein the jaw plate comprises a plurality of jaw teeth extending axially toward the slider, and wherein the slider comprises a plurality of slider teeth extending axially toward the jaw plate.
12. The roller tray of claim 11 , wherein the one-way jaw clutch assembly further comprises:
a guide plate keyed to the brake shaft; and
a spring located between the guide plate and the slider.
13. The roller tray of claim 12 , wherein the slider includes an axially extending post, the guide plate defines a post groove, and the axially extending post is located in the post groove.
14. The roller tray of claim 9 , wherein the brake roller further comprises:
an axle shaft located radially inward of the brake shaft;
a unidirectional roller bearing located between the axle shaft and the brake shaft;
a spacer located around the axle shaft; and
a ball bearing located radially between the spacer and the brake roller.
15. The roller tray of claim 14 , wherein the one-way jaw clutch assembly is located axially between the brake stack assembly and at least one of the ball bearing or the spacer.
16. The roller tray of claim 9 , wherein the brake roller further comprises:
a nut located around a threaded surface of the brake shaft;
a nut retainer located between the nut and the brake stack assembly, wherein the nut retainer is keyed to the brake shaft; and
a lock screw located through the nut and the nut retainer.