Self-Boosting Friction Brake for Load Torque-Adaptive Gear Holding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing friction brakes struggle to adapt the realizable braking force to a load torque, making it difficult to effectively decelerate or fix a load gear in a vehicle power shift transmission.
Innovation Solution
A self-boosting and self-adjusting friction brake is designed with a load gear and an actuatable friction braking device, featuring a spreading piston that automatically adjusts its position based on the load torque, providing a load torque-dependent braking force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional friction brake is used, then the structure is simple, but the braking force cannot be adapted to the load torque
Solution Approach 1:
The friction brake is designed to be self-actuating, where the braking force is automatically generated based on the load torque without requiring external actuation. The spreading piston converts the load torque directly into braking force through mechanical amplification, making the system self-regulating and adaptive to varying loads.
Solution Approach 2:
The braking force parameter is dynamically changed based on the load torque through the spreading piston mechanism. As the load torque increases, the spreading piston moves further along the center longitudinal axis, automatically increasing the braking force to match the load requirements.
2Force
If the braking force is increased to handle high load torque, then the deceleration performance improves, but the actuation force requirement increases
Solution Approach 1:
The actuation system replaces direct mechanical force application with a torque-based actuation mechanism. The spreading piston converts rotational load torque into axial spreading motion that actuates the friction braking device, leveraging the existing load torque rather than requiring separate actuation energy.
Solution Approach 2:
The actuating device is designed to be dynamic, with the spreading piston moving along the center longitudinal axis in response to varying load conditions. This dynamic adjustment allows the braking force to automatically adapt to the instantaneous load torque without requiring additional actuation energy.
3Adaptability or versatility
If electronic control systems are added to adapt braking force to load torque, then the adaptability improves, but the device complexity and cost increase
Solution Approach 1:
The friction brake system is completely self-regulating, using the load torque itself as the control input. The spreading piston automatically translates load torque variations into corresponding braking force adjustments without requiring sensors, controllers, or electronic systems, achieving adaptability through pure mechanical means.
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 friction brake can automatically generate a boosted braking force adapted to the load torque, reliably decelerating or fixing the load gear without the need for additional electronic resources, ensuring optimal performance.
Implementation Method 1
a friction brake, in particular a self-boosting and/or self-adjusting friction brake for a vehicle power shift transmission... the spreading piston is equipped in order to perform an automatically materialising spreading along the centre longitudinal axis as a function of a load torque (or load moment) provided on the load gear
Data Source
AI summary
A friction brake for a vehicle power shift transmission is disclosed. The friction brake includes a load gear that is rotatably driveable about a centre longitudinal. A friction braking device is provided for decelerating and/or fixing the load gear. An actuating device for actuating the friction braking device, the actuating device includes an moveable spreading piston. The moveable spreading piston while performing a spread along the centre longitudinal axis automatically materialising as a function of a load torque provided on the load gear, provides a braking force for actuating the friction braking device.