Hydraulic hammer

Patent metadata

Field	Value
Publication number	US-11027403-B2
Application number	US-201816011001-A
Country	US
Kind code	B2
Filing date	Jun 18, 2018
Priority date	Jun 18, 2018
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A hydraulic hammer includes a housing defining a cutout and a power cell slidably received within the housing. The power cell includes a valve assembly extending from a side of the power cell. The valve assembly is at least partially received within the cutout of the housing. The hydraulic hammer further includes a pair of wear plates at least partially disposed around the valve assembly of the power cell. Each of the pair of wear plates is coupled to at least one of the power cell and the housing.

First claim

What is claimed is:

1. A hydraulic hammer comprising:
a housing defining a cutout and a longitudinal axis;
a power cell slidably received with the housing, the power cell including a valve assembly extending from a side of the power cell, wherein the valve assembly is at least partially received within the cutout of the housing; and
a pair of wear plates at least partially disposed around the valve assembly of the power cell, wherein each wear plate includes an elongate section and a pair of lateral sections extending from opposite ends of the elongate section, wherein the elongate section is oriented parallel to the longitudinal axis and each lateral section is oriented perpendicular to the elongate section, and wherein each of the pair of wear plates is coupled to at least one of the power cell and the housing.

2. The hydraulic hammer of claim 1 , wherein the cutout is U-shaped.

3. The hydraulic hammer of claim 1 , wherein the cutout is defined by an internal wall of the housing.

4. The hydraulic hammer of claim 3 , wherein the housing further comprises an external wall spaced apart from the internal wall, and wherein the valve assembly extends through the cutout towards the external wall.

5. The hydraulic hammer of claim 1 , wherein each lateral section of each wear plate includes a projecting portion adapted to be removably received within corresponding apertures of the power cell.

6. The hydraulic hammer of claim 1 , further comprising a top buffer disposed proximate to a top end of the housing.

7. The hydraulic hammer of claim 6 , further comprising a bottom buffer disposed proximate to a bottom end of the housing.

8. The hydraulic hammer of claim 7 , further comprising a middle buffer disposed between the top buffer and the bottom buffer.

9. A hydraulic hammer comprising:
a housing defining a cutout and a longitudinal axis, wherein the cutout is U-shaped;
a power cell slidably received within the housing, the power cell including a valve assembly extending from a side of the power cell and a plurality of apertures disposed around the valve assembly, wherein the valve assembly is at least partially received within the cutout of the housing; and
a pair of wear plates at least partially disposed around the valve assembly of the power cell, wherein each wear plate includes an elongate section and a pair of lateral sections extending from opposite ends of the elongate section, wherein the elongate section is oriented parallel to the longitudinal axis and each lateral section is oriented perpendicular to the elongate section, and wherein each lateral section of each wear plate includes a peg adapted to be removably received within corresponding apertures of the plurality of apertures of the power cell.

10. The hydraulic hammer of claim 9 , wherein the cutout is defined by an internal wall of the housing.

11. The hydraulic hammer of claim 10 , wherein the housing further comprises an external wall spaced apart from the internal wall, and wherein the valve assembly extends through the cutout towards the external wall.

12. The hydraulic hammer of claim 9 , further comprising a top buffer disposed proximate to a top end of the housing.

13. The hydraulic hammer of claim 12 , further comprising a bottom buffer disposed proximate to a bottom end of the housing.

14. The hydraulic hammer of claim 13 , further comprising a middle buffer disposed between the top buffer and the bottom buffer.

15. A hydraulic hammer comprising:
a housing having a top end and a bottom end, wherein the housing defines a cutout and a longitudinal axis;
a power cell slidably received within the housing, the power cell including a valve assembly extending from a side of the power cell, wherein the valve assembly is at least partially received within the cutout of the housing;
a pair of wear plates at least partially disposed around the valve assembly of the power cell, wherein each wear plate includes an elongate section and a pair of lateral sections extending from opposite ends of the elongate section, wherein the elongate section is oriented parallel to the longitudinal axis and each lateral section is oriented perpendicular to the elongate section, and wherein each of the pair of wear plates is coupled to one of the power cell and the housing;
a top buffer disposed proximate to the top end of the housing; and a bottom buffer disposed proximate to the bottom end of the housing.

16. The hydraulic hammer of claim 15 , wherein the cutout is U-shaped.

17. The hydraulic hammer of claim 15 , wherein the cutout is defined by an internal wall of the housing.

18. The hydraulic hammer of claim 17 , wherein the housing further comprises an external wall spaced apart from the internal wall, and wherein the valve assembly extends through the cutout towards the external wall.

19. The hydraulic hammer of claim 15 , wherein each lateral section of each wear plate includes a projecting portion adapted to be removably received within corresponding apertures of the power cell.

20. The hydraulic hammer of claim 15 , further comprising a middle buffer disposed between the top buffer and the bottom buffer.

Assignees

• Caterpillar Inc

Inventors

• Beckhusen Jordan
• Moore Cody
• Walker Jason Ray

Classifications

• E02F3/966

  of hammer-type tools (arrangements for breaking-up hard ground E02F5/305; percussion -type rippers E02F5/323) · CPC title

• B25D17/24

  Damping the reaction force {(resiliently mounted handles B25D17/043; dampers in connections of hammers to backhoes E02F3/966)} · CPC title

• B25D9/18 Primary

  involving a piston-type slide valve · CPC title

• B25D9/04

  of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member · CPC title

• B25D17/00 Primary

  Details of, or accessories for, portable power-driven percussive tools {(details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00)} · CPC title