Brake Pad Groove Suction for Centrifugal Dust Capture
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Solution Overview
Problem
Existing braking systems for machines, such as road and rail vehicles, inadequately capture particles and dust emitted during friction braking, leading to environmental pollution and health hazards, with existing solutions still allowing significant escape of particles and dust during braking phases.
Innovation Solution
A braking system with a collection system featuring a collection pipe that allows air circulation from the inner edge to the outer edge of the lining, utilizing centrifugal force for effective particle and dust capture, and including a suction mechanism to enhance collection efficiency, while maintaining a simple construction and avoiding contact with the lining to prevent residual torque generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a suction pipe is used to capture particles and dust in the collection groove, then particle capture is improved, but particles and dust continue to escape in undesirable quantities during braking phases
Solution Approach 1:
The air inlet orifice is positioned at the second end of the groove (outer edge side) rather than at the first end (inner edge side), reversing the conventional suction approach. This allows air to flow naturally from the inner edge to the outer edge through centrifugal force, carrying particles into the collection pipe without requiring direct contact between the pipe and lining
Solution Approach 2:
Air acts as an intermediary fluid that carries particles from the friction interface through the collection groove into the collection pipe. The air flow serves as a transport medium that efficiently captures particles without requiring mechanical contact between the collection pipe and the friction material
2Object-affected harmful factors
If the collection pipe contacts the lining to improve particle capture, then capture efficiency is improved, but residual torque is generated after the braking phase
Solution Approach 1:
The collection pipe is extracted from direct contact with the friction material lining. The pipe is positioned to receive air flow carrying particles without touching the lining, thereby eliminating the source of residual torque while maintaining particle capture functionality through the air flow mechanism
3Object-affected harmful factors
If the sole is modified at the groove location to facilitate particle collection, then collection efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The collection groove serves multiple functions: it collects particles from the friction interface, channels air flow carrying particles toward the collection pipe, and maintains structural integrity of the brake pad. This multi-functionality eliminates the need for separate particle collection mechanisms or sole modifications
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 improves the capture of particles and dust, ensuring effective operation in both directions of rotation and reducing undesirable vibrations, thus enhancing the environmental safety and operational efficiency of braking systems.
Implementation Method 1
air flows through the groove from the inner edge to the outer edge of the lining. Since this is the natural (non-suction) direction of airflow within the groove due to centrifugal force
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a braking system comprising a brake pad (10), the pad comprising a base (1) with a first face (13) and a second face (14), and a lining (2) that is made of friction material and is secured to the first face (13), the lining (2) being delimited by a friction face (26), a mounting face (20), an inner edge (23), an outer edge (24), a rear edge (21) and a front edge (22), the lining (2) being provided with at least one collecting groove (3) which is open on the friction face (26), extends to the inner edge (23) at its first end (31), and runs to the outer edge (24) at its second end (32). The braking system further comprises a collecting system which comprises a collecting pipe (40) through which air can flow, the air inlet port (41) of the collecting pipe (40) facing the second end (32), and the collecting groove (3) opening into the outer edge (24) at its second end (32).