Conveyor belt cleaner scraper blade with sensor

• US 6,374,990 B1
• Filed: 12/07/1999
• Issued: 04/23/2002
• Est. Priority Date: 12/10/1998
• Status: Expired due to Term

• Current Assignee: Martin Engineering Company
• Original Assignee: Martin Engineering Company
• Inventors: Swinderman, R. Todd
• Primary Examiner(s): Ellis, Christopher P.
• Assistant Examiner(s): SHARMA, RASHMI K
• Application Number:
  US09/454,856
• Time in Patent Office: 868 Days
• Field of Search: 198/497, 198/499, 198/502.1
• US Class Current: 198/497
• CPC Class Codes: B65G 2203/042 Sensors
• CPC Class Codes: B65G 45/12 comprising scrapers
• CPC Class Codes: B65G 45/16 with scraper biasing means

Abstract

A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt. The scraper blade includes a base member adapted to be attached to a cross shaft of a conveyor belt cleaner and a wear section which extends outwardly from the base member to a scraping tip. The wear section includes a plurality of temperature sensors located along the length of the wear section, a plurality of wear sensors located along the length of the wear section, and one or more strain gage sensors located along the length of the wear section. Each of the sensors is in electrical communication with an electrical transmitter member that is adapted to provide an electrical output signal to a computer. The temperature sensors provide an indication of the temperature of the wear section at the location of each temperature sensor. The wear rate sensors provide an indication of the location of the scraping tip with respect to the base member as the wear section wears away and the tip moves closer to the base member. The strain gage sensors provide an indication of the magnitude of the strain the wear section is subjected to during scraping engagement with the conveyor belt.

Claims

1. A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt, said scraper blade including:

a base member;

a wear section extending outwardly from said base member, said wear section including a tip adapted to engage the conveyor belt;

one or more electrical sensors coupled to said scraper blade, each said electrical sensor adapted to sense a physical condition present at said scraper blade, wherein said one or more electrical sensors are embedded within said scraper blade.

2. The conveyor belt cleaner scraper blade of claim 1 wherein said electrical transmitter member comprises an electrical connector member, each said sensor being in electrical communication with said electrical connector member, said electrical connector member adapted to be attached to an electrical cable.

3. The conveyor belt cleaner scraper blade of claim 1 including a microprocessor in electrical communication with said one or more electrical sensors.

4. The conveyor belt cleaner scraper blade of claim 1 including a plurality of electrical sensors spaced apart from one another along the length of said wear section between said base member and said tip.

5. The conveyor belt cleaner scraper blade of claim 1 wherein said electrical sensors include one or more temperature sensors adapted to sense the temperature of said scraper blade adjacent each said temperature sensor.

6. The conveyor belt cleaner scraper blade of claim 5 wherein each said temperature sensor comprises a thermocouple.

7. The conveyor belt cleaner scraper blade of claim 1 wherein said electrical sensors include one or more strain detection sensors, each said strain detection sensor being adapted to provide an indication of the magnitude of the strain said wear section is subjected to during scraping engagement with the conveyor belt.

8. The conveyor belt cleaner scraper blade of claim 7 wherein said strain detection sensors comprise strain gage sensors.

9. The conveyor belt cleaner scraper blade of claim 1 wherein said electrical sensors include one or more first wear sensors, said first wear sensors adapted to provide an indication of the location of said tip with respect to said base member which location changes as said wear section wears away and said tip moves closer to said base member.

10. The conveyor belt cleaner scraper blade of claim 9 wherein said electrical sensors include one or more second wear sensors, said second wear sensors being laterally spaced apart from said first wear sensors, said second wear sensors adapted to provide an indication of the location of said tip with respect to said base member as said wear section wears away and said tip moves closer to said base member.

11. The conveyor belt cleaner scraper blade of claim 1 wherein said one or more electrical sensors include an ambient air temperature sensor adapted to sense the temperature of the air adjacent said scraper blade.

12. The conveyor belt cleaner scraper blade of claim 1 wherein said wear section is formed from an elastomeric material and said electrical sensors are embedded in said elastomeric material.

13. The conveyor belt cleaner scraper blade of claim 1 including an electrical transmitter associated with said electrical sensors adapted to receive a signal from said sensors and transmit said signal to a receiver.

14. The conveyor belt cleaner scraper blade of claim 1 wherein said one or more electrical sensors are located at said wear section.

15. The conveyor belt cleaner scraper blade of claim 1 wherein said one or more electrical sensors are located at said base member.

16. A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt, said scraper blade including:

a base member;

a wear section extending outwardly from said base member, said wear section including a tip adapted to engage the conveyor belt; and

a plurality of sensors associated with said scraper blade, each said sensor adapted to sense a physical condition present at said scraper blade, wherein said sensors are spaced apart from one another along the length of said wear section between said base member and said tip.

17. A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt, said scraper blade including:

a base member;

a wear section extending outwardly from said base member, said wear section including a tip adapted to engage the conveyor belt; and

a temperature sensor embedded within said scraper blade, said temperature sensor adapted to sense the temperature of said scraper blade.

18. A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt, said scraper blade including:

a base member;

a wear section extending outwardly from said base member, said wear section including a tip adapted to engage the conveyor belt; and

a strain detection sensor associated with said scraper blade, said strain detection sensor adapted to provide an indication of the magnitude of the strain said wear section is subjected to during engagement with the conveyor belt.

19. A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt, said scraper blade including:

a base member;

a wear section extending outwardly from said base member, said wear section including a tip adapted to engage the conveyor belt; and

one or more first wear sensors associated with said scraper blade, said first wear sensors adapted to provide an indication of the location of a first portion said tip with respect to said base member which location changes as said wear section wears away and said tip moves closer to said base member.

20. The conveyor belt scraper blade of claim 19 including one or more second wear sensors, said second wear sensors being laterally spaced apart from said first wear sensors, said second wear sensors adapted to provide an indication of the location a second portion of said tip with respect to said base member as said wear section wears away and said tip moves closer to said base member such that said first and second wear sensors detect wear at different locations across said wear section.

21. A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt, said scraper blade including:

a base member;

a wear section extending outwardly from said base member, said wear section including a tip adapted to engage the conveyor belt; and

an ambient air temperate sensor associated with said scraper blade, said ambient air temperature sensor adapted to sense the temperature of the air adjacent said scraper blade.

22. A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt, said scraper blade including:

a base member;

a wear section extending outwardly from said base member, said wear section including a tip adapted to engage the conveyor belt; and

one or more sensors associated with said scraper blade, each said sensor adapted to sense a physical condition present at said scraper blade, wherein said one or more sensors are located at said wear section.