System configured to couple a hydraulic hammer and tool

Patent metadata

Field	Value
Publication number	US-10239195-B2
Application number	US-201514943206-A
Country	US
Kind code	B2
Filing date	Nov 17, 2015
Priority date	Nov 17, 2015
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A system configured to couple a hydraulic hammer and tool is disclosed. A hydraulic hammer may include a housing defining a chamber, elongate along a longitudinal axis, configured to receive a tool. The chamber may comprise an opening through which the tool may be inserted. A plurality of upper splines and a plurality of lower splines may be disposed, parallel to the longitudinal axis, on an inner surface of the chamber. A locking mechanism, comprising a rotatable locking ring, may be disposed within the chamber between the plurality of upper splines and the plurality of lower splines. The locking ring may comprise a plurality of locking ring splines disposed on an inner surface of the locking ring, wherein the plurality of locking ring splines are configured to align with the plurality of upper splines and the plurality of lower splines when the locking ring is rotated to an unlocked state.

First claim

I claim:

1. A hydraulic hammer comprising:
a housing defining a chamber, elongate along a longitudinal axis, configured to receive a tool, the chamber comprising an opening through which the tool is configured to be inserted;
a plurality of upper splines disposed on an inner surface of the chamber, the plurality of upper splines longitudinally oriented parallel to the longitudinal axis;
a plurality of lower splines disposed on the inner surface of the chamber, the plurality of lower splines longitudinally oriented parallel to the longitudinal axis; and
a locking mechanism disposed within the chamber between the plurality of upper splines and the plurality of lower splines, the locking mechanism comprising a locking ring that is rotatable about the longitudinal axis with respect to the housing, the locking ring comprising a plurality of locking ring splines disposed on an inner surface of the locking ring, wherein the hydraulic hammer defines an unlocked state in which the plurality of locking ring splines are configured to align with both the plurality of upper splines and the plurality of lower splines.

2. The hydraulic hammer of claim 1 , wherein each of the plurality of upper splines abuts a reciprocating piston of the hydraulic hammer during a work stroke of the reciprocating piston and each of the plurality of upper splines abuts the locking ring.

3. The hydraulic hammer of claim 1 , wherein each of the plurality of lower splines abuts the locking ring.

4. The hydraulic hammer of claim 1 , wherein one of more splines of the plurality of upper splines, plurality of lower splines, or locking ring splines is hemispherical shaped.

5. The hydraulic hammer of claim 1 , wherein an upper edge of each of the plurality of locking ring splines abuts a lower edge of each of the plurality of upper splines and a lower edge of each of the plurality of locking ring splines abuts an upper edge of each of the plurality of lower splines.

6. The hydraulic hammer of claim 1 , further comprising:
an interface mechanism configured to allow manipulation of the locking ring, the interface mechanism comprising:
a slot defined in the housing; and
a grip member movable within the slot and operatively connected to the locking ring such that movement of the grip member causes rotation of the locking ring.

7. The hydraulic hammer of claim 6 , wherein the slot is open to an exterior of the housing.

8. An assembly configured to couple a hydraulic hammer and a tool, the assembly comprising:
a chamber, elongate along a longitudinal axis, defined in a housing of the hydraulic hammer, the chamber comprising an opening through which the tool is configured to be inserted;
a plurality of upper splines disposed on an inner surface of the chamber, the plurality of upper splines longitudinally oriented parallel to the longitudinal axis;
a plurality of lower splines disposed on the inner surface of the chamber, the plurality of lower splines longitudinally oriented parallel to the longitudinal axis; and
a locking mechanism disposed within the chamber between the plurality of upper splines and the plurality of lower splines, the locking mechanism comprising a rotatable locking ring, the locking ring comprising a plurality of locking ring splines disposed on an inner surface of the locking ring, wherein the plurality of locking ring splines are configured to align with the plurality of chamber splines when the locking ring is rotated to an unlocked state.

9. The assembly of claim 8 , wherein each of the plurality of upper splines abuts a reciprocating piston of the hydraulic hammer during a work stroke of the reciprocating piston and each of the plurality of upper splines abuts the locking ring.

10. The assembly of claim 8 , wherein each of the plurality of lower splines abuts the locking ring.

11. The assembly of claim 8 , wherein one of more splines of the plurality of upper splines, plurality of lower splines, or locking ring splines is hemispherical shaped.

12. The assembly of claim 8 , wherein an upper edge of each of the plurality of locking ring splines abuts a lower edge of each of the plurality of upper splines and a lower edge of each of the plurality of locking ring splines abuts an upper edge of each of the plurality of lower splines.

13. The assembly of claim 8 , further comprising:
a grip member operatively connected to the locking ring such that a manipulation of the grip member causes rotation of the locking ring.

14. The assembly of claim 13 , wherein the grip member is accessible from an exterior of the housing.

Assignees

• Caterpillar Inc

Inventors

• Moore Cody

Classifications

• B22F10/20

  Direct sintering or melting · CPC title

• B22F2005/001

  Cutting tools, earth boring or grinding tool other than table ware · CPC title

• E02F3/966

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

• B22F2207/20

  Cooperating components · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title