Vehicle anti-rollover system

• US 9,981,655 B2
• Filed: 05/28/2014
• Issued: 05/29/2018
• Est. Priority Date: 05/30/2013
• Status: Active Grant

• Current Assignee: Blue Leaf IP Incorporated (CNH Industrial N.V.)
• Original Assignee: CNH Industrial America LLC (CNH Industrial N.V.)
• Inventors: Cosentino, Giuseppe, Morselli, Riccardo, Fiorati, Stefano
• Primary Examiner(s): Jos, Basil T.
• Application Number:
  US14/894,691
• Publication Number:
  US 20160107641A1
• Time in Patent Office: 1,462 Days
• CPC Class Codes: B60G 17/016 characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input B60G17/017 takes precedence
• CPC Class Codes: B60G 17/019 characterised by the type of sensor or the arrangement thereof B60G17/01941 takes precedence
• CPC Class Codes: B60G 2300/08 Agricultural vehicles
• CPC Class Codes: B60G 2300/09 Construction vehicles, e.g. graders, excavators
• CPC Class Codes: B60G 2800/0124 Roll-over conditions
• CPC Class Codes: B60G 2800/9124 Roll-over protection systems, e.g. for warning or control
• CPC Class Codes: B60G 9/02 the axle or housing being pivotally mounted on the vehicle , e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle B60G9/003 takes precedence
• CPC Class Codes: B60W 30/04 related to roll-over prevention

Abstract

A work vehicle is provided having a first pair of wheels mounted to a vehicle body via a fixed axle and a second pair of wheels mounted to the vehicle body via a pivotable axle. The work vehicle includes an anti-rollover system with at least two load sensors mounted at an axle housing near different ones of the first pair of wheels to measure a downward force borne by each respective wheel, the at least two load sensors being operationally connected to a processor. The processor is configured to send anti-rollover commands to the anti-rollover system based on signals received from the at least two load sensors.

Claims

1. A work vehicle having a first pair of wheels mounted to a vehicle body via a fixed axle and a second pair of wheels mounted to the vehicle body via a pivotable axle, the work vehicle comprising an anti-rollover system comprising at least two load sensors mounted at an axle housing near different ones of the first pair of wheels to measure a downward force borne by each respective wheel of the first pair of wheels, the at least two load sensors being operationally connected to a processor, wherein the processor is configured to send anti-rollover commands to the anti-rollover system based on signals received from the at least two load sensors, wherein the anti-rollover system comprises a pivot control system with at least one actuator that extends from the vehicle body at a first end to the pivotable axle at a second end, the at least one actuator is configured to create a torque about a longitudinal axis between the pivotable axle and the vehicle body, and the anti-rollover commands comprise at least an actuating signal to the at least one actuator.

2. The work vehicle according to claim 1, wherein the at least one actuator comprises two single-acting actuators, each single-acting actuator being provided to act on a different end of the pivotable axle.

3. The work vehicle according to claim 1, wherein the at least one actuator is formed as at least one double-acting hydraulic cylinder.

4. The work vehicle according to claim 1, wherein the fixed axle is a rear axle and the pivotable axle is a front axle of the work vehicle.

5. The work vehicle according to claim 1, wherein the pivotable axle is a suspended axle.

6. The work vehicle according to claim 1, wherein the processor is configured to send the anti-rollover commands to a braking system, wheel drive system, or steering system.

7. The work vehicle according to claim 1, wherein the actuating signal for the at least one actuator is provided to instruct the at least one actuator to counteract an imbalance measured between the at least two load sensors.

8. The work vehicle according to claim 1, wherein the processor comprises a comparator configured to compare loads measured by the at least two load sensors and to determine a difference in the loads.

9. The work vehicle according to claim 1, wherein the work vehicle is an agricultural vehicle.

10. The anti-rollover system according to claim 1 for use in the work vehicle.

11. A pivot control system with at least one actuator that extends from a vehicle body at a first end to a pivotable axle at a second end, wherein the at least one actuator is configured to create a torque about a longitudinal axis between the pivotable axle and the vehicle body, and a processor configured to send an actuating signal to the at least one actuator based on signals received from at least two load sensors.

12. At least one tangible, non-transitory, machine-readable medium, comprising machine-readable instructions to:

measure, via at least two load sensors mounted at an axle housing near different ones of a first pair of wheels, a downward force borne by each respective wheel of the first pair of wheels;

generate anti-rollover commands based on signals received from the at least two load sensors; and

send the anti-rollover commands to an anti-rollover system having at least one actuator coupled to a pivotable axle at a first end and a vehicle body of the work vehicle at a second end, wherein the anti-rollover commands are configured to cause the at least one actuator to create a torque about a longitudinal axis between the pivotable axle and the vehicle body.