Wheel-Hub Pressure Transfer Assembly Without Brake Chamber Changes
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Solution Overview
Problem
The existing systems for transmitting control pressures and/or working pressures from a wheel hub to a vehicle rim are complex and costly, often requiring structural changes to the brake-disc chamber, which is inefficient and inconvenient.
Innovation Solution
A system with a receiving part that can be positioned around or connected to the wheel hub, featuring a rotationally symmetrical central region with radial extensions for detachable connection to the wheel hub and brake-disc chamber, allowing pressure transmission without significant alterations to the brake-disc chamber, using a rotary union mechanism for pressure transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional systems are used to transmit control pressures from wheel hub to vehicle rim, then pressure transmission is achieved, but structural changes to the brake-disc chamber are required, increasing device complexity and cost
Solution Approach 1:
The system divides the pressure transmission function into separate components: a receiving part that attaches to the wheel hub and a brake-disc chamber that remains structurally unchanged. The receiving part contains the rotary union mechanism, separating it from the brake-disc chamber structure, thus avoiding structural modifications to the brake-disc chamber while enabling pressure transmission.
Solution Approach 2:
The receiving part acts as an intermediary component between the wheel hub and the brake-disc chamber. It includes a rotary union mechanism that transmits control pressures from the wheel hub to the brake-disc chamber through radial extensions, enabling pressure transmission without direct structural integration or modifications to the brake-disc chamber.
2Adaptability or versatility
If rotary unions are used for pressure medium lines, then pressure transmission to rotating tires is enabled, but the system becomes costly and complex
Solution Approach 1:
The receiving part serves multiple functions: it attaches to the wheel hub, houses the rotary union mechanism for pressure transmission, and connects to the brake-disc chamber. This multi-functional design consolidates several components into one, reducing overall system complexity while maintaining the capability to transmit control pressures to rotating wheels.
Solution Approach 2:
The rotary union mechanism is nested within the receiving part, which itself attaches to the wheel hub. The radial extensions of the receiving part are positioned to engage with fastening bores, creating a nested structure where the pressure transmission mechanism is contained within the mounting structure, simplifying installation and reducing component count.
3Adaptability or versatility
If multiple compressed air lines are routed from central supply to individual wheel units, then all wheels can be inflated, but the system requires multiple rotary unions and becomes complex
Solution Approach 1:
The receiving part is designed as a universal component that can be attached to any wheel hub and serves multiple functions: mounting to the wheel hub, housing the rotary union, and connecting to the brake-disc chamber. This universal design allows the same component to be used across multiple wheel units, reducing the need for multiple specialized rotary unions and simplifying the overall system architecture.
Data Source
AI summary
A system (40) for transmitting control pressures and/or working pressures from a wheel-hub pressure medium supply (20, 21, 22), in particular from a wheel-hub pressure medium rotary union (21), to a vehicle rim (2) mounted on the wheel hub (1). The system (40) has a receiving part (41), which has a central region (55) with a central opening (44) and at least one extension region (43) projecting radially from the central region (55), at least in some regions. The receiving part (41) can be connected to the wheel hub (1) by means of the at least one radially projecting extension region (43), in a detachable way, and the control pressures and/or working pressures can be transmitted from the wheel-hub pressure medium supply (20, 21, 22) to the opening (44).