Claims
- 1. A conveyor belt cleaner and tensioner assembly adapted to be attached to a cross shaft, said conveyor belt cleaner and tensioner assembly including:
a mounting base adapted to be mounted to the cross shaft; an arm member having a first end and a second end, said first end of said arm member being pivotally connected to the cross shaft for pivotal movement about a pivot axis; a scraper blade attached to said second end of said arm member; and a biasing mechanism having a first end pivotally attached to said mounting base and a second end pivotally attached to said arm member; whereby said biasing member is adapted to pivot said arm member and said scraper blade with respect to said mounting base.
- 2. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said biasing mechanism includes a housing having a cavity and a ram having a first end located in said cavity and a second end located externally of said housing, said ram being extendable and retractable with respect to said housing.
- 3. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said scraper blade is removably attached to said second end of said arm member by a fastener.
- 4. The conveyor belt cleaner and tensioner assembly of claim 3 wherein said scraper blade includes an aperture having a central axis, said fastener extending through said aperture such that said scraper blade is pivotally attached to said first end of said arm member for pivotal movement about said central axis of said aperture with respect to said arm member.
- 5. The conveyor belt cleaner and tensioner assembly of claim 4 wherein said scraper blade includes a slot and said first end of said arm member includes a tab located in said slot, said tab preventing pivotal movement of said scraper blade with respect to said member beyond a predetermined limit.
- 6. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said scraper blade includes a generally arc-shaped inner surface.
- 7. The conveyor belt cleaner and tensioner assembly of claim 6 wherein said scraper blade includes a generally arc-shaped outer surface.
- 8. The conveyor belt cleaner and tensioner assembly of claim 7 wherein said inner surface and said outer surface of said scraper blade are formed by respective radii extending from said pivot axis about which said arm member pivots.
- 9. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said mounting base includes a first outwardly extending lug, said first end of said arm member being pivotally attached to said first lug.
- 10. The conveyor belt cleaner and tensioner assembly of claim 9 wherein said first end of said arm member includes a sleeve member, said sleeve member being pivotally attached to said first lug.
- 11. The conveyor belt cleaner and tensioner assembly of claim 9 wherein said arm member includes a stop member extending outwardly from said first end of said arm member, said stop member adapted to engage said mounting base after said arm member has pivoted in a first pivotal direction about said pivot axis to a predetermined position to prevent further pivotal movement of said arm member in said first pivotal direction.
- 12. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said arm member includes a lug located between said first end and said second end of said arm member, said second end of said tensioner mechanism being pivotally attached to said lug of said arm member.
- 13. The conveyor belt cleaner and tensioner assembly of claim 9 wherein said mounting base includes a second outwardly extending lug, said first end of said tensioner mechanism being pivotally attached to said second lug.
- 14. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said first end of said arm member includes a base member, said base member adapted to extend around the cross shaft such that said base member is pivotally attached to the cross shaft.
- 15. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said mounting base includes an upper mounting member and a lower mounting member, each said mounting member including a generally semicircular sleeve adapted to be located partially around the cross shaft and a lug extending outwardly from said sleeve.
- 16. The conveyor belt cleaner and tensioner assembly of claim 1 wherein said biasing mechanism comprises a gas spring tensioner.
- 17. The conveyor belt cleaner and tensioner assembly of claim 2 wherein said biasing mechanism includes a compressed gas and a liquid located in said cavity of said housing.
- 18. A scraper blade for a conveyor belt cleaner including:
a mounting base; and a scraping tip attached to said mounting base, said scraping tip including an outer end having a wear-in tip.
- 19. The scraper blade of claim 18 wherein said scraping tip includes a generally arc-shaped inner surface and a generally arc-shaped outer surface, said inner surface being generally equally spaced from said outer surface.
- 20. The scraper blade of claim 18 including a wear resistant scraping element at said outer end of said scraping tip.
- 21. The scraper blade of claim 20 wherein said wear-in tip comprises a curved scraping end formed on said scraping element.
- 22. The scraper blade of claim 18 wherein said wear-in tip is attached to and substantially encloses said outer end of said scraping tip.
- 23. The scraper blade of claim 22 wherein said wear-in tip includes a first leg and a second leg, said first and second legs being disposed on opposite sides of said scraping tip.
- 24. The scraper blade of claim 22 wherein said wear-in tip is formed from a material selected from the group consisting of elastomers, lead, bronze, silver, copper, tin or epoxies.
- 25. The scraper blade of claim 18 wherein said mounting base includes an aperture having a central axis about which said scraper blade is adapted to pivot and a slot which is adapted to limit pivotal movement of said scraper blade.
- 26. A scraper blade for a conveyor belt cleaner including:
a mounting base; a scraping tip attached to said mounting base, said scraping tip including an outer end having a scraping edge, said scraping tip being formed from a metal material; and a wear-in tip attached to said outer end of said scraping tip, said wear-in tip substantially enclosing said outer end and said scraping edge of said scraping tip, said wear-in tip being formed from a material that is relatively soft compared to said metal material from which said scraping tip is formed.
- 27. The scraper blade of claim 26 wherein said wear-in tip is formed from a material selected from the group consisting of elastomers, lead, bronze, silver, copper, tin, or epoxies.
RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional Application No. 60/125,167, filed Mar. 19, 1999.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60125167 |
Mar 1999 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09524925 |
Mar 2000 |
US |
Child |
10058486 |
Jan 2002 |
US |