Work Vehicle Screw-Ring Assembly for Dynamic Rollover Prevention
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Solution Overview
Problem
Earth-moving machines are prone to rollover due to their elevated center of gravity, especially on rough and inclined terrain, posing safety risks and incurring high repair costs, with existing solutions being complex and vulnerable to dirty environments.
Innovation Solution
An anti-rollover system that adjusts the position of the main body's center of gravity by moving the screw-ring assembly linearly along the undercarriage using hydraulic actuators and linear guides, controlled by sensors to detect ground inclination and weight distribution, ensuring robustness and simplicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the main body is positioned in an elevated position to allow turning movement with respect to the undercarriage, then the work vehicle can perform earth-moving operations effectively, but the center of gravity is elevated which increases the probability of rollover on rough and inclined terrain
Solution Approach 1:
The anti-rollover system applies preliminary counteracting force through the screw-ring assembly before rollover occurs. The system detects ground inclination and weight distribution, then pre-adjusts the main body position to counterbalance potential rollover forces, preventing the harmful effect before it manifests.
Solution Approach 2:
The screw-ring assembly is designed to be movable along the longitudinal axis, allowing dynamic adjustment of the main body's longitudinal position. This dynamic capability enables the system to adapt the center of gravity location in real-time based on ground conditions, resolving the contradiction between maintaining turning capability and preventing rollover.
2Reliability
If existing anti-rollover solutions are implemented, then rollover prevention capability is improved, but the system complexity increases and the system becomes more vulnerable to damages in dirty work environments
Solution Approach 1:
The screw-ring assembly, which is already an essential component for enabling turning movement and hydraulic conduit passage, is given the additional function of anti-rollover adjustment. By making this existing component multi-functional, the system achieves rollover prevention without adding separate complex mechanisms, thus improving reliability while minimizing increased complexity.
Solution Approach 2:
The anti-rollover function is merged with the existing screw-ring assembly structure. The linear movement capability of the screw-ring assembly is utilized for both its original purpose (facilitating turning and conduit passage) and the new anti-rollover function, consolidating multiple functions into a single integrated system.
3Reliability
If the screw-ring assembly is moved linearly along the undercarriage to adjust the center of gravity, then rollover prevention is achieved, but the device complexity and space requirements increase
Solution Approach 1:
The screw-ring assembly is designed with dynamic linear movement capability along the longitudinal axis of the undercarriage. This dynamic positioning allows the main body to shift its longitudinal position, adjusting the center of gravity to prevent rollover. The linear guides enable this movement while maintaining structural integrity.
Solution Approach 2:
The movement function is segmented from the rotational turning function. The screw-ring assembly can move linearly along the longitudinal axis independently of its rotational capability, allowing separate optimization of each function. This segmentation enables rollover prevention through linear adjustment without compromising the turning mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents rollover by dynamically adjusting the center of gravity, maintaining system integrity in harsh conditions while being compact and cost-effective.
Implementation Method 1
moving the screw-ring assembly linearly along the undercarriage using hydraulic actuators
Implementation Method 2
controlled by sensors to detect ground inclination and weight distribution
Data Source
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AI summary
Work vehicle (1) comprising an undercarriage (2) movable with respect to the ground thanks to ground contact means (4) and a main body (3) carried in a movable manner by the undercarriage (2) and comprising a linear guide assembly (11) axially interposed between a screw-ring assembly (8) and an intermediate portion (7) of said undercarriage (2) and actuator means (14) configured to exert a force directed to the screw-ring assembly (8) so that the screw-ring assembly (8) is carried in a linear movable manner with respect to the undercarriage (2) along a width direction (W) in order to vary the location of an axis (B) of rotation of the main body (3)with respect to a longitudinal plane (A) of the work vehicle (1) .