Sealed Brake Assembly for Low-Pressure Dust Containment
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Solution Overview
Problem
Conventional braking systems for maglev vehicles face performance issues and operational lifetime reduction due to the use of materials designed for standard atmospheric conditions in low-pressure environments, and produce particulate matter that contaminates the operational space.
Innovation Solution
A sealed brake assembly with a ventilation system that isolates the brake environment from the ambient conditions, using inert gases for cooling and purging particulate matter, and includes sensors and control units to manage temperature, humidity, and pressure for improved performance and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional braking materials designed for standard atmospheric conditions are used in low-pressure environments, then the braking system can be simpler and more cost-effective, but the performance deteriorates and operational lifetime is reduced
Solution Approach 1:
The patent applies the inert atmosphere principle by introducing a sealed cavity filled with inert gas (such as nitrogen or argon) to create a controlled environment for the brake components. This inert environment prevents oxidation and chemical degradation of brake materials, allowing them to maintain their performance characteristics and extend operational lifetime while using conventional braking materials, thus resolving the contradiction between simplicity and reliability.
2Device complexity
If conventional open braking systems are used, then the device complexity is lower, but particulate matter is generated that contaminates the operational space
Solution Approach 1:
The patent applies the extraction principle by removing brake dust and particulate matter from the operational environment through a dedicated ventilation system. The sealed cavity isolates the brake components, and the ventilation system with filters actively extracts and removes particulate matter generated during braking, preventing contamination of the operational space while maintaining a relatively simple brake structure.
Solution Approach 2:
The patent applies the intermediary principle by introducing a sealed cavity as an intermediate barrier between the brake components and the operational space. This sealed environment acts as a mediator that contains particulate matter generation within the cavity, preventing direct contamination of the operational space while allowing the brake system to function with conventional components.
3Device complexity
If brake components are exposed to ambient environmental conditions, then the system requires fewer control mechanisms, but temperature and humidity variations reduce performance and lifespan
Solution Approach 1:
The patent applies the feedback principle by incorporating sensors that monitor temperature, humidity, and pressure conditions within the sealed brake cavity. These sensors provide real-time feedback to a control system that adjusts ventilation and environmental control mechanisms to maintain optimal conditions for brake components, thereby extending their lifespan while using controlled rather than completely passive systems.
Solution Approach 2:
The patent applies the self-service principle by designing the sealed cavity system to automatically maintain its internal environment through integrated sensors and control mechanisms. The system self-regulates temperature and humidity conditions within the cavity, reducing the need for external control mechanisms while protecting brake components from harmful environmental variations and extending their operational life.
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 brake assembly maintains optimal operating conditions within the sealed cavity, preventing contamination and enhancing the performance and lifespan of brake components by controlling environmental factors.
Implementation Method 1
A brake assembly with a sealed cavity is disclosed. The sealed cavity includes a ventilation system that isolates a brake environment from an ambient environment. The ventilation system may provide a flow of gas through the sealed cavity to cool components within the sealed cavity and/or purge particulate matter from the sealed cavity.
Implementation Method 2
A brake assembly with a sealed cavity is disclosed. The brake assemblies may include a ventilation assembly that purges particulate matter and other contaminates from the brake assembly environment. The described brake assemblies also provide control of various conditions within the brake assembly environment in order to improve performance and reduce wear of brake assembly components.
Data Source
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AI summary
A brake assembly is configured for use with a wheel in an ambient environment. The wheel includes a rim rotatably mounted to an axle. The brake assembly includes a brake stack and an actuation assembly configured to selectively apply a force to the brake stack. A cover sealingly engaged the rim to at least partially define a fluidic barrier between a brake cavity and the ambient environment. The brake stack is located within the brake cavity..