Damage avoidance systems and methods for motor grader scarifiers

Patent metadata

Field	Value
Publication number	US-12359396-B2
Application number	US-202117364382-A
Country	US
Kind code	B2
Filing date	Jul 16, 2021
Priority date	Jul 16, 2021
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

The present disclosure is directed to systems and methods for operating a grading machine. The method includes (i) receiving information indicating a current position of a moldboard of the grading machine; (ii) determining if the moldboard is moving toward an avoidance zone, and the avoidance zone is defined by a distance from a scarifier of the grading machine; and (iii) in response to a determination that the moldboard is moving toward the avoidance zone, adjusting at least one operating parameter of the moldboard or the scarifier of the grading machine.

First claim

The invention claimed is:

1. A method for operating a grading machine on a surface, comprising:
receiving information indicating a current position of a moldboard of the grading machine, wherein the moldboard is coupled to a drawbar of the grading machine and configured to rotate about an axis, and wherein the moldboard includes two ends configured to move vertically relative to the surface;
determining if the moldboard is moving toward an avoidance zone via at least one moldboard sensor and a positioning sensor for a scarifier of the grading machine, wherein the avoidance zone is defined by a distance from the scarifier to the moldboard, and wherein the distance is measured when both the scarifier and the moldboard are capable of being moved or rotated in an operation; and
in response to a determination that the moldboard is moving toward the avoidance zone, adjusting at least one operating parameter of the moldboard or the scarifier of the grading machine.

2. The method of claim 1 , wherein the at least one operating parameter includes at least one of:
a moving speed of the moldboard;
a moving speed of the scarifier;
a moving direction of the moldboard;
a moving direction of the scarifier;
a rotational speed of the moldboard; and/or
a rotational direction of the moldboard.

3. The method of claim 1 , wherein the avoidance zone includes a first avoidance zone and a second avoidance zone.

4. The method of claim 3 , wherein the first avoidance zone is at a first side of the scarifier and the second avoidance zone is at a second side of the scarifier opposite to the first side.

5. The method of claim 3 , wherein the first avoidance zone is at a first location adjacent to the scarifier and the second avoidance zone is at a second location away from the first location.

6. The method of claim 3 , wherein the first avoidance zone is at a left side of the machine and the second avoidance zone is at a right side of the machine.

7. The method of claim 1 , further comprising, in response to a determination that the avoidance zone is moved toward the drawbar of the grading machine, adjusting the at least one operating parameter of the scarifier of the grading machine.

8. The method of claim 1 , further comprising sending an alarm to an operator of the grading machine, in response to the determination that the moldboard is moving toward the avoidance zone.

9. The method of claim 8 , wherein the at least one operating parameter of the moldboard or the scarifier of the grading machine is manually adjusted by the operator in response to the alarm.

10. The method of claim 1 , wherein the avoidance zone has a spherical shape.

11. The method of claim 1 , wherein the avoidance zone has a three-dimensional shape corresponding to a shape of the scarifier.

12. The method of claim 1 , wherein the distance from the scarifier is less than 1 inch.

13. The method of claim 1 , wherein the distance from the scarifier is less than 3 inches.

14. The method of claim 1 , wherein the distance from the scarifier is less than 5 inches.

15. A grading machine comprising:
a processor;
a memory communicably coupled to the processor, the memory comprising computer executable instructions that, when executed by the processor, cause the grading machine to:
receive information indicating a current position of a moldboard of the grading machine, wherein the moldboard is coupled to a drawbar of the grading machine and configured to rotate about an axis, and wherein the moldboard includes two ends configured to move vertically relative to the drawbar;
determine if the moldboard is moving toward an avoidance zone via at least one moldboard sensor and a position sensor for a scarifier of the grading machine, wherein the avoidance zone is defined by a distance from the scarifier to the moldboard, and wherein the distance is measured when both the scarifier and the moldboard are capable of being moved or rotated in an operation; and
in response to a determination that the moldboard is moving toward the avoidance zone, adjust one or more operating parameters of the moldboard or the scarifier of the grading machine.

16. The grading machine of claim 15 , wherein the one or more operating parameters includes two or more of: a moving speed of the moldboard, a moving speed of the scarifier, a moving direction of the moldboard, a moving direction of the scarifier, a rotational speed of the moldboard, and a rotational direction of the moldboard.

17. The grading machine of claim 15 , wherein the computer executable instructions, when executed by the processor, are configured to:
send an alarm to an operator of the grading machine, in response to the determination that the moldboard is moving toward the avoidance zone.

18. The grading machine of claim 15 , wherein the avoidance zone has a spherical shape.

19. The grading machine of claim 15 , wherein the distance from the scarifier is less than 5 inches.

20. A method for operating a grading machine, comprising:
receiving information indicating an operation of a moldboard of the grading machine, wherein the moldboard is coupled to a drawbar of the grading machine and configured to rotate about an axis, and wherein the operation of the moldboard includes a movement and/or a rotation;
determining if the operation of the moldboard results in a portion of the moldboard moving into an avoidance zone via at least one moldboard sensor and a position sensor for a scarifier of the grading machine, wherein the avoidance zone is defined by a distance from the scarifier to the moldboard, and wherein the distance is measured when both the scarifier and the moldboard are capable of being moved or rotated in an operation; and
in response to a determination that the moldboard is moving into the avoidance zone, adjusting at least one operating parameter of the moldboard or the scarifier of the grading machine.

Assignees

• Caterpillar Inc

Inventors

• Gentle Michael C
• Tevis Ethan M
• Cox David L

Classifications

• E02F3/7604

  Combinations of scraper blades with soil loosening tools working independently of scraper blades (soil loosening attachments fixed on blades E02F3/8152, E02F3/8155) · CPC title

• E02F3/764

  with the scraper blade being pivotable about a vertical axis · CPC title

• E02F9/24

  Safety devices {, e.g. for preventing overload (E02F9/226 takes precedence)} · CPC title

• E02F3/844

  for positioning the blade, e.g. hydraulically · CPC title

• E02F9/205

  Remotely operated machines, e.g. unmanned vehicles (E02F3/8866 takes precedence) · CPC title