Shaft-Hub Brake Connection With Spring Ring for Noise Suppression
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Solution Overview
Problem
Conventional shaft-hub connections in brake assemblies often produce noise due to speed fluctuations and lack a stable, play-free connection, which affects the operational reliability and safety.
Innovation Solution
A shaft-hub connection featuring an external toothing with an annular groove and a metal wire spring ring that is elastically tensioned and secured in a form-locking manner, providing a play-free and noise-suppressing interface between the shaft and hub, with a variable radial distance and increasing axial position to ensure stable positioning and high friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional shaft-hub connection is used, then the structure is simple, but noise is generated due to speed fluctuations and play in the connection
Solution Approach 1:
An annular spring is introduced as an intermediary element between the shaft and hub. This spring absorbs speed fluctuations and eliminates play in the connection, thereby suppressing noise generation while maintaining a relatively simple overall structure.
Solution Approach 2:
The annular spring changes its radial distance parameter in response to speed fluctuations, allowing it to absorb shocks and maintain contact between the shaft and hub, thus eliminating noise without requiring a complex connection structure.
2Object-affected harmful factors
If the shaft is connected rigidly to the hub, then play is eliminated, but the connection cannot accommodate speed fluctuations, generating noise
Solution Approach 1:
The connection transitions from a rigid static structure to a dynamic system with an annular spring that can adapt to speed fluctuations. The spring's elastic properties allow the connection to maintain stability while accommodating dynamic variations in operating conditions.
Solution Approach 2:
The annular spring provides beforehand cushioning by being pre-loaded in the compressed state. This pre-cushioning capability allows the connection to absorb speed fluctuations before they can generate noise, maintaining stability under varying operating conditions.
3Object-affected harmful factors
If an annular spring is added to eliminate play, then noise is suppressed, but the device complexity increases
Solution Approach 1:
The annular spring functions as a flexible element that can be integrated into the existing shaft-hub connection geometry. This flexible component suppresses noise through elastic deformation while adding minimal structural complexity compared to rigid alternative solutions.
4Temperature
If metal wire is used for the annular spring, then high temperature operation is possible, but manufacturing complexity increases
Solution Approach 1:
The annular spring is designed with a specific radial distance parameter that varies to accommodate elastic deformation requirements. This parameter optimization allows the metal wire spring to achieve both high temperature capability and reasonable manufacturability by balancing material properties with geometric design.
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 solution achieves a low-noise, play-free shaft-hub connection that maintains stability and operational reliability even under speed fluctuations, with a long service life and ability to function at high temperatures, enhancing the safety and efficiency of the brake assembly.
Implementation Method 1
the annular spring is elastically tensioned in the radial direction when the hub is pushed onto the shaft, allowing no play between the shaft and hub in the radial direction
Implementation Method 2
a play-free shaft-hub connection is achieved by the annular spring, suppressing the noises caused by speed fluctuations
Implementation Method 3
operation is possible even at high temperatures. This is because metal is elastically deformable at much higher temperatures than rubber or plastic
Data Source
AI summary
In a shaft-hub connection and brake assembly having a shaft-hub connection, a shaft has an external toothing, and a hub has an internal toothing. The hub is plugged by its internal toothing onto the shaft with external toothing such that the external toothing is in engagement with the internal toothing. The shaft has an annular groove, e.g., an annular groove, that extends around completely and/or uninterruptedly in the circumferential direction. An annular spring, e.g., a spring ring, is arranged in the annular groove, and the annular groove is arranged, e.g., centrally, in the external toothing.