Auto Inter-Axle Differential Lock for Slope Braking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Work vehicles, such as articulated dump trucks, experience reduced front axle braking force due to weight transfer towards the rear when inclined on a slope, limiting traction and braking capacity.
Innovation Solution
An automatic inter-axle differential lock system that engages a lock device in the differential when the vehicle is reversing or stopped on a slope, transferring braking torque from the front axle to the rear axle via a drive shaft, enhancing braking capacity by locking the differential to ensure both axles rotate together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the vehicle operates on a slope with front wheel assembly positioned higher than rear wheel assembly, then weight transfer occurs towards the rear of the vehicle, but front axle braking force is limited due to reduced traction
Solution Approach 1:
The patent merges the braking functions of the front and rear axles by engaging the inter-axle differential lock, which couples the two axles together. This allows the braking force generated at the rear axle (where weight transfer increases normal force and traction) to be transferred to the front axle, effectively combining the braking capacity of both axles to overcome the limitation of reduced front axle traction on slopes
2Ease of operation
If the differential operates normally to allow independent axle rotation, then vehicle maneuverability is maintained, but braking torque cannot be transferred between axles
Solution Approach 1:
The patent implements a dynamic system where the inter-axle differential lock can be selectively engaged or disengaged based on operating conditions. During normal operation, the differential remains unlocked to allow independent axle rotation and maintain maneuverability. During braking on slopes, the lock is engaged to enable braking torque transfer between axles, thus dynamically adapting the system behavior to optimize both maneuverability and braking performance
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
The system significantly increases braking capacity on slopes by transferring braking torque from the front axle to the rear axle, maintaining effective braking force even when the vehicle is inclined, thereby improving safety and control.
Implementation Method 1
A differential is coupled to the drive shaft and includes a lock device configured to substantially block operation of the differential
Data Source
AI summary
A work vehicle is provided having a front wheel assembly and a rear wheel assembly. The front wheel assembly may include a front axle assembly, and the rear wheel assembly may include a rear axle assembly. The vehicle may include a braking system configured to transfer front axle braking torque to the rear axle assembly when the vehicle is positioned on a slope.