ПАТЕНТНЫЙ ПОИСК В РФ
НОВЫЕ ПАТЕНТЫ, ЗАЯВКИ НА ПАТЕНТ
БИБЛИОТЕКА ПАТЕНТОВ НА ИЗОБРЕТЕНИЯ

Skewed roller on an excavator (патент US № 7950170)

Официальная публикация
патента US № 7950170

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Классы МПК:E02F9/28 .детали рабочих органов, например зубья 
E02F3/14 ....ковши; цепи; направляющие для ковшей или цепей; приводы для цепей 
Автор(ы):Hall, David R. (Provo, UT, US)
Cannon, Neil (Provo, UT, US)
Приоритеты:
подача заявки
22.01.2009
публикация патента
31.05.2011

РЕФЕРАТ (Abstract)

In one aspect of the invention, a trenching machine has at least one roller assembly comprising a body rotationally supported by an axle exteriorly mounted to a trenching chain or wheel. At least a portion of the body comprises a substantially conical shape.

ФОРМУЛА ИЗОБРЕТЕНИЯ (CLAIMS)

What is claimed is:

1. A trenching machine for degrading natural and man-made formations, comprising; at least one roller assembly comprising a body rotationally supported by an axle exteriorly mounted to a trenching chain or wheel configured to move the roller in a travel direction; at least a portion of the body comprising a substantially conical shape; the roller assembly is configured to rotate at a skewed angle with respect to the travel direction; the axle defines the skew angle of the roller assembly; and the skewed angle is configured such that cutting elements, attached to the body, drag debris out of a trench formed by the rolling assembly.

2. The machine of claim 1, wherein the roller assembly comprises at least one metal-to-metal seal assembly disposed on a base end of the axle and intermediate the axle and an inner surface of the body.

3. The machine of claim 2, wherein the seal comprises a backup ring and an o-ring.

4. The machine of claim 1, wherein the roller assembly comprises a load carrying bearing assembly disposed intermediate the axle and an inner surface of the body.

5. The machine of claim 4, wherein the bearing assembly comprises ball bearings, roller bearings, ball-thrust bearings, deep-groove ball bearings, taper roller bearings, roller thrust bearings, or combinations thereof.

6. The machine of claim 4, wherein the bearing assembly comprises a wear resistant coating disposed on the axle, the inner surface of the body, or combinations thereof.

7. The machine of claim 6, wherein the coating comprises Mo, Co, Fe—Si, Cr, self-fusing alloys, FeB, Fe—Si, SiC, cemented metal carbides, TiN, nitrides, polycrystalline ceramics, polycrystalline diamond, cubic boron nitride, or combinations thereof.

8. The machine of claim 1, wherein the roller assembly comprises multiple cutting elements radially arranged in multiple rows along an outer surface of the body.

9. The machine of claim 8, wherein the cutting elements comprise a pointed geometry.

10. The machine of claim 9, wherein the pointed geometry of the cutting element comprises a substantially conical shape with a round apex.

11. The machine of claim 10, wherein the cutting element comprises a polycrystalline diamond body bonded to a cemented metal carbide substrate, and the diamond body is thicker than the carbide substrate.

12. The machine of claim 1, wherein at least one of roller assemblies is followed by a pick also disposed in the trenching chain.

13. The machine of claim 12, wherein the picks are adapted to contact the formation after the roller assembly.

14. The machine of claim 1, wherein the roller assembly comprises a chevron pattern comprising a plurality of roller assembly disposed in a single link of the trenching chain facing each other.

15. The machine of claim 1, wherein the axle is positioned at an angle of 25 to 55 degrees with respect to a chain link of the trenching machine.

16. The machine of claim 1, wherein at least one cutting element protrudes out of the body at a different angle than another cutting element on the same body.

17. The machine of claim 1, wherein a center axis of the conically shaped body is horizontally skewed from an orientation of a chain link of the trenching machine.

18. The machine of claim 17, wherein at least two bodies are skewed with respect to each other.


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