Pick retainer

Patent metadata

Field	Value
Publication number	US-9757730-B2
Application number	US-201113177161-A
Country	US
Kind code	B2
Filing date	Jul 6, 2011
Priority date	Jul 6, 2011
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A breaker pick retainer system for a breaker includes a holder that defines a pick aperture and a pin aperture, and a breaker pick received in the pick aperture of the holder and including a pin receiving feature aligned with the pin aperture. The breaker pick retainer system including a pin received within the pin aperture of the holder and seated in the pin receiving feature of the breaker pick for maintaining the breaker pick within the holder. The breaker pick retainer system further including a resilient plug received within the pin aperture for sealing the pin aperture. The plug inhibits removal of the pin from the pin aperture.

First claim

What is claimed is:

1. A breaker pick system for a feeder breaker including a drum and at least one first holder rigidly coupled to the breaker, the breaker pick system comprising:
an intermediate holder configured to extend through the first holder, the intermediate holder including an end portion configured to extend from an end surface of the first holder, the intermediate holder further including a pick aperture extending along a longitudinal axis of the intermediate holder and a pin aperture arranged transverse to the longitudinal axis, the pick aperture positioned adjacent an end of the intermediate holder opposite the end portion, wherein the pin aperture intersects the pick aperture;
a breaker pick including a first end having a cutting surface and second end defining a shaft, the shaft received in the pick aperture of the intermediate holder and including a recess formed on an outer periphery of the shaft, wherein when the breaker pick is received by the pick aperture the recess is aligned with the pin aperture;
a pin received within the pin aperture of the intermediate holder and seated in the recess of the breaker pick for engaging the breaker pick, the pin including an end; and
a solid resilient plug received within the pin aperture for sealing the pin aperture, wherein the plug is positioned adjacent the end of the pin to inhibit removal of the pin from the pin aperture.

2. The breaker pick system of claim 1 , wherein the pin is a straight pin.

3. The breaker pick system of claim 1 , wherein the pin aperture has a circular cross-section and defines an aperture diameter, and the pin is cylindrical and defines a pin diameter that is less than the aperture diameter.

4. The breaker pick system of claim 1 , and further comprising a second solid resilient plug received within the pin aperture, wherein the plug is positioned at a first end of the pin and the second plug is positioned at a second end of the pin, the second end being opposite the first end.

5. The breaker pick system of claim 1 , wherein the plug has a frustoconical shape such that the plug defines a first end and a second end having a narrower diameter than the first end, the second end of the plug being positioned adjacent the end of the pin.

6. The breaker pick system of claim 5 , wherein the pin aperture defines an aperture diameter and at least a portion of the plug defines a plug diameter that is greater than the aperture diameter.

7. The breaker pick system of claim 1 , wherein the plug is formed of a resilient rubber.

8. The breaker pick system of claim 7 , wherein the resilient rubber has a hardness of about 50-60 durometer.

9. The breaker pick system of claim 7 , wherein the resilient rubber is a high temperature resilient rubber.

10. The breaker pick system of claim 1 , wherein the pin is formed of turned, ground, and polished 1045 steel.

11. A feeder breaker comprising:
a frame defining an intake end and a discharge end;
a conveyor coupled to the frame for conveying material from the intake end to the discharge end; and
a breaker coupled to the frame between the intake end and the discharge end, the breaker configured to process material and the breaker including,
a holder including a pick aperture extending along a longitudinal axis of the holder and a pin aperture transverse to and intersecting the pick aperture,
a breaker pick including a cutting portion, a shaft, and a recess formed in the shaft, wherein when the shaft is retained within the pick aperture the recess is aligned with the pin aperture, and
a retainer system for retaining the breaker pick in the holder, the retainer system including a pin received in the pin aperture and the recess to engage the breaker pick, and a solid plug received in the pin aperture and sized to resiliently engage the holder, wherein the plug has a frustoconical shape such that the plug defines a first end and a second end having a narrower diameter than the first end, the second end of the plug positioned adjacent an end of the pin, the plug substantially isolating the pin within the pin aperture and maintaining the pin within the pin aperture.

12. The feeder breaker of claim 11 , wherein the pin aperture has a circular cross-section.

13. The feeder breaker of claim 11 , wherein the plug is a first plug and further comprising a second solid plug received within the pin aperture, wherein the first plug is positioned at a first end of the pin and the second plug is positioned at a second end of the pin, the second end being opposite the first end.

14. The feeder breaker of claim 11 , wherein the pin is in loose engagement with the pin aperture.

15. A breaker pick system for a feeder breaker, the feeder breaker including a drum having a first holder, the breaker pick system comprising:
an intermediate holder configured to extend through the first holder of the drum, the intermediate holder including an end portion configured to extend beyond an end surface of the first holder, the intermediate holder further including a pick aperture and a pin aperture intersecting the pick aperture, the pick aperture positioned adjacent an end of the intermediate holder opposite the end portion;
a breaker pick including a cutting portion and a shaft positioned within the pick aperture, a pin receiving feature formed on the shaft and aligned with the pin aperture of the holder;
a pin slidingly received within the pin aperture and engaging the pin receiving feature of the breaker pick to inhibit removal of the breaker pick from the holder; and
a solid plug resiliently disposed within the pin aperture and engaging the breaker pick to substantially seal the pin aperture and inhibit removal of the pin from the pin aperture, the plug having a frustoconical shape such that the plug defines a first end and a second end having a narrower diameter than the first end, the second end of the plug positioned adjacent an end of the pin.

16. The breaker pick system of claim 15 , wherein the pin aperture has a circular cross-section.

17. The breaker pick system of claim 15 , wherein the pin receiving feature is a groove.

18. The breaker pick system of claim 15 , wherein the pin aperture defines an aperture diameter, the plug defines a plug diameter, and the plug diameter is greater than the aperture diameter.

19. The breaker pick system of claim 15 , wherein the pin is formed of turned, ground, and polished 1045 steel and the plug is formed of high temperature resilient rubber with a hardness of about 50-60 durometer.

20. A breaker pick retainer system for a breaker including a holder that defines a pick aperture and a pin aperture, and a breaker pick received in the pick aperture of the holder and including a pin receiving feature aligned with the pin aperture, the breaker pick retainer system comprising:
a pin received within the pin aperture of the holder and seated in the pin receiving feature of the breaker pick for maintaining the breaker pick within the holder, the pin including a first end, a second end, and a pin axis extending therebetween; and
a solid resilient plug received within the pin aperture for sealing the pin aperture, the plug having a frustoconical shape defining a first end and a second end having a narrower diameter than the first end, the plug entirely positioned within the pin aperture such that the first end and the second end of the plug are positioned within the pin aperture, wherein the second end engages the first end of the pin to inhibit removal of the pin from the pin aperture.

Assignees

• Harney William L
• Elliott Jarrod
• Joy Mm Delaware Inc

Inventors

• Harney William L
• Elliott Jarrod

Classifications

• E21C35/191

  for fixing holders · CPC title

• E21C35/19 Primary

  Means for fixing picks or holders · CPC title

• E21C35/1831

  Fixing methods or devices · CPC title

• B02C17/10 Primary

  with one or a few disintegrating members arranged in the container · CPC title

• B02C4/30 Primary

  Shape or construction of rollers · CPC title