Quick change wheel assembly for a machine

Patent metadata

Field	Value
Publication number	US-9662933-B2
Application number	US-201514612936-A
Country	US
Kind code	B2
Filing date	Feb 3, 2015
Priority date	Feb 3, 2015
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A wheel assembly is disclosed. The wheel assembly may have a hub with a first spline, a second spline, and a slot separating the first spline and the second spline. The first spline, the second spline, and the slot may extend from a front end to a rear end. The wheel assembly may also have an outer rim configured to mount a tire. The wheel assembly may further have an inner rim extending from a rim front end to a rim rear end. The inner rim may have a notch disposed at the rim front end and a tab disposed at the rim rear end. The tab may slidingly engage with the slot. The wheel assembly may have a locking block, which may slidingly engage with the notch and the slot at the front end. Further, the wheel assembly may have a bolt connecting the mounting block to the hub.

First claim

What is claimed is:

1. A wheel assembly, comprising:
a hub, including:
a splined portion extending from a front end of the splined portion to a rear end of the splined portion, the splined portion comprising:
a first spline;
a second spline; and
a slot separating the first spline and the second spline, the first spline, the second spline, and the slot extending from the front end of the splined portion to the rear end of the splined portion;

a stub extending between the rear end of the splined portion to a stub end; and
a base extending between the stub end and a base end, such that the splined portion, the stub, and the base define an annular channel disposed between the rear end of the splined portion and the stub end;

a rim including: an outer rim configured to mount a tire; an inner rim extending from a rim front end to a rim rear end, the inner rim including:
a notch disposed at the rim front end; and
a tab disposed at the rim rear end, the tab configured to slidingly engage with the slot and be received in the annular channel such that the tab is rotatable in the annular channel to a position where the slot aligns with the notch;

a locking block configured to slidingly engage with the notch and the slot at the front end of the splined portion; and
a bolt connecting the locking block to the hub.

2. The wheel assembly of claim 1 ,
wherein the splined portion, the stub, and the base are disposed coaxially.

3. The wheel assembly of claim 1 , wherein the annular channel includes a tab lock portion having:
a front wall;
a rear wall; and
a bottom wall extending between the front wall and the rear wall.

4. The wheel assembly of claim 3 , wherein the tab is configured to be rotatably received in the tab lock portion between the front wall and the rear wall.

5. The wheel assembly of claim 1 , wherein the slot includes:
a locking slot extending from the front end of the splined portion to a distal end disposed between the front end of the splined portion and the rear end of the splined portion; and
a guiding slot extending from the distal end to the rear end of the splined portion.

6. The wheel assembly of claim 5 , wherein
the locking slot has a first bottom surface;
the guiding slot has a second bottom surface; and
a shoulder extends from the first bottom surface to the second bottom surface.

7. The wheel assembly of claim 6 , wherein the shoulder includes a bolt hole configured to threadingly receive the bolt.

8. The wheel assembly of claim 1 , wherein the inner rim includes:
a first rim section disposed at the rim front end, the first rim section extending circumferentially between a first leading rim wall and a first trailing rim wall; and
a second rim section disposed at the rim front end, the second rim section extending circumferentially between a second leading rim wall and a second trailing rim wall, wherein the notch is disposed between the first trailing rim wall and the second leading rim wall.

9. The wheel assembly of claim 8 , wherein the tab is disposed between the first leading rim wall and the first trailing rim wall.

10. The wheel assembly of claim 1 , wherein the tab is circumferentially offset relative to the notch.

11. A hub configured to receive a rim having an inner rim and an outer rim, the inner rim extending from a rim front end to a rim rear end, the hub comprising:
a splined portion extending from a front end of the splined portion to a rear end of the splined portion, the splined portion including:
a first spline extending along a length of the splined portion;
a second spline extending along the length of the splined portion; and
a slot separating the first spline and the second spline;

a stub extending between the rear end of the splined portion and a stub end; and
a base extending between the stub end and a base end, wherein the splined portion, the stub, and the base are disposed coaxially such that an annular channel is defined between the rear end of the splined portion and the stub end, wherein the annular channel is configured to receive a tab disposed at the rim rear end such that the tab is rotatable in the annular channel to a position where the slot aligns with a notch disposed at the rim front end; wherein the hub is configured to receive a locking block wherein the locking block is configured to slidingly engage with the notch and the slot.

12. The hub of claim 11 , wherein
the base has a generally cylindrical shape, the base having a first diameter,
the stub has a generally cylindrical outer surface having a second diameter, and the first diameter is larger than the second diameter.

13. The hub of claim 11 , wherein the slot includes:
a locking slot extending from the front end of the splined portion to a distal end disposed between the front end of the splined portion and the rear end of the splined portion; and
a guiding slot extending from the distal end to the rear end of the splined portion.

14. The hub of claim 13 , wherein
the locking slot has a first bottom surface;
the guiding slot has a second bottom surface; and
a shoulder extends from the first bottom surface to the second bottom surface.

15. The hub of claim 14 , wherein the shoulder includes a bolt hole configured to receive a bolt.

16. The hub of claim 11 , wherein:
the first spline extends circumferentially from a first leading edge to a first trailing edge spanning a first angle; and
the second spline extends circumferentially from a second leading edge to a second trailing edge spanning a second angle different from the first angle.

17. A rim for a wheel, comprising:
an outer rim configured to mount a tire; and
an inner rim attached to the outer rim, the inner rim extending from a rim front end to a rim rear end and including:
an inner surface;
a notch disposed at the rim front end, the notch extending from the rim front end to a notch end disposed between the rim front end and the rim rear end; and
a tab disposed at the rim rear end, the tab extending radially inward from the inner surface,
wherein the rim is configured to be mounted on a hub comprising a stub, a base, and a splined portion comprising a first spline and a second spline wherein a slot separates the first spline and the second spline wherein the stub, the splined portion and the base are coaxially disposed such that an annular channel is defined between the splined portion and the base,
wherein the tab is configured to be received in the annular channel such that the tab is rotatable in the annular channel to a position where the notch aligns with the slot; wherein the rim is configured to receive a locking block wherein the locking block is configured to slidingly engage with the notch and the slot.

18. The rim of claim 17 , wherein the inner rim includes:
a first rim section disposed at the rim front end, the first rim section extending circumferentially between a first leading rim wall and a first trailing rim wall; and
a second rim section disposed at the rim front end, the second rim section extending circumferentially between a second leading rim wall and a second trailing rim wall, wherein the notch is disposed between the first trailing rim wall and the second leading rim wall.

19. The rim of claim 18 , wherein the tab is disposed between the first leading rim wall and the first trailing rim wall.

20. The rim of claim 17 , wherein the inner rim and the outer rim form an integrated structure.

Assignees

• Caterpillar Inc

Inventors

• Kamp Nathaniel R
• Joyce Richard L
• Ries Jeffrey R
• UNSETH Joseph
• Vericker David A

Classifications

• B60Y2200/41

  Construction vehicles, e.g. graders, excavators · CPC title

• Y10T403/7018

  including separably interposed key · CPC title

• B60B3/14 Primary

  Attaching disc body to hub (resiliently B60B9/00; attaching rim to wheel body B60B23/00 ){; Wheel adapters} · CPC title

• B60B23/04

  by bayonet joint, screw-thread, or like attachments · CPC title

• B60B2900/731

  Use in cases of damage, failure or emergency · CPC title