Method of operating a machine for conditioning a work material

• US 20070260379A1
• Filed: 05/05/2006
• Published: 11/08/2007
• Est. Priority Date: 05/05/2006
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Congdon, Thomas
• Application Number:
  US11/418,926
• Publication Number:
  US 20070260379A1
• Time in Patent Office: Days
• US Class Current: 701/50
• CPC Class Codes: E01C 21/00 Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder recycling in place or on the road involving soil stabilisation E01C23/065 ; stabilising soil under existing surfacing E01C23/10; soil-conditioning or soil-stabilising materials C09K17/00; soil consolidation in general E02D3/12
• CPC Class Codes: E01C 23/065 Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving in situ mixing of hydraulic cement concrete E01C19/025; apparatus for in-plant recycling E01C19/1004, E01C19/1036
• CPC Class Codes: E02F 5/226 with means for processing the soil, e.g. screening belts, separators; Padding machines

Abstract

A machine, such as a scraper machine, is configured to transport a work material from a first work area to a second work area, and includes a substance condition sensor configured to sense the relative amount of a desired substance, such as water, during real time operation of the machine. The machine may further include a work material conditioning apparatus having a substance dispenser connected with a substance storage tank mounted on the machine, and configured to dispense the desired substance to the work material responsive to a signal from the sensor associated with a relative moisture content of work material within the machine.

Claims

1. A method of operating a scraper machine comprising the steps of:

transporting work material from a first work area to a second work area with the scraper machine;

sensing a parameter value indicative of a desired substance content in at least a portion of the work material with a sensor of the scraper machine; and

generating a signal with the sensor.

2. The method of claim 1 further comprising a step of moving work material past the sensor at least in part via a loading apparatus of the work machine.

3. The method of claim 2 wherein the sensing step comprises sensing a moisture content of at least a portion of the work material during the moving step with a moisture sensor, and wherein the step of generating a signal comprises generating a signal indicative of moisture content.

4. The method of claim 3 further comprising the steps of loading work material into a bowl of the scraper machine with the loading apparatus prior to the transporting step, and unloading work material from the bowl with the loading apparatus subsequent to the transporting step, wherein the sensing step comprises sensing a moisture content of at least a portion of the work material during at least one of the loading and unloading steps.

5. The method of claim 4 further comprising a step of conditioning at least a portion of the work material with a conditioning apparatus of the scraper machine, including dispensing a water containing fluid to the work material responsive to the sensed parameter value.

6. The method of claim 5 wherein the step of conditioning the at least a portion of the work material further comprises the steps of comparing a sensed moisture content with a desired moisture content for the work material, and dispensing a water-containing fluid from a fluid tank of the scraper machine to the work material if the sensed moisture content is less than the desired moisture content.

7. The method of claim 6 further comprising a step of determining a relative amount of water for dispensing to the work material, prior to the dispensing step, wherein the conditioning step takes place during at least one of the loading and unloading steps.

8. The method of claim 7 further comprising the steps of determining at least one of a relative loading rate and a relative unloading rate associated with the respective loading or unloading steps, and determining a timing of dispensing the water-containing fluid responsive to the determined rate.

9. The method of claim 8 wherein each of the loading and unloading steps includes rotating a feed auger of the scraper machine.

10. A method of operating a machine comprising the steps of:

transporting work material from a first work area to a second work area with the machine;

sensing a parameter value indicative of a desired substance content in at least a portion of the work material; and

conditioning at least a portion of the work material with a conditioning apparatus of the machine, including dispensing the desired substance to the work material responsive to the sensed parameter value.

11. The method of claim 10 wherein the machine comprises a scraper machine and the sensing step comprises sensing a moisture content of at least a portion of the work material with a moisture sensor of the scraper machine, the method further comprising a step of generating a sensor signal associated with the sensed moisture content.

12. The method of claim 11 further comprising a step of moving work material past the moisture sensor at least in part via a loading apparatus of the scraper machine.

13. The method of claim 12 further comprising the steps of loading work material into a bowl of the scraper machine with the loading apparatus prior to the transporting step, and unloading work material from the bowl with the loading apparatus subsequent to the transporting step, wherein the sensing step comprises sensing a moisture content of at least a portion of the work material during at least one of the loading and unloading steps.

14. The method of claim 13 wherein the step of conditioning at least a portion of the work material further comprises the steps of comparing a sensed moisture content with a desired moisture content of the work material, and dispensing a water-containing fluid to the work material responsive to the sensed moisture content, wherein the conditioning step takes place during at least one of the loading and unloading steps.

15. The method of claim 14 wherein the step of loading work material into a bowl of the scraper machine includes rotating at least one feed auger in a first direction, and wherein the step of unloading work material from the bowl includes a step of rotating the at least one feed auger in an opposite direction.

16. A scraper machine comprising:

a frame;

a substance storage tank;

a bowl; and

a work material conditioning apparatus including a substance condition sensor configured to output a signal associated with a relative content of the substance in a work material, and a substance dispenser connected to said substance storage tank and configured to selectively dispense the substance to at least a portion of work material within the scraper machine responsive to the signal.

17. The scraper machine of claim 16 further comprising a work material cutter having a cutting edge, and a work material loading apparatus separate from said work material cutter and configured to feed work material within said scraper machine.

18. The scraper machine of claim 17 wherein said work material loading apparatus includes a housing, and said substance condition sensor comprises a moisture sensor disposed at least partially within said housing.

19. The work machine of claim 18 wherein said work material loading apparatus comprises at least one feed auger, said housing extending at least partially about said at least one feed auger, and wherein said substance dispenser comprises a tip extending within said housing.

20. The work machine of claim 19 wherein said at least one loading auger comprises first and second bi-directional loading augers.