Gear With Internal Dynamic Damper for Vibration Control
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Solution Overview
Problem
Existing gear designs face challenges in efficiently managing vibrations and maintaining sealing properties while allowing for easy maintenance and cost-effective replacement of worn components.
Innovation Solution
A gear configuration featuring a toothed member at the radially outer side, a boss at the radially inner side, and dynamic dampers within a sealed space defined by connectors, which absorb vibrations and prevent oil ingress, allowing for reduced weight, size, and easy maintenance by housing the dampers inside the gear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If dynamic dampers are added to reduce vibrations, then vibration reduction is improved, but device complexity and weight increase
Solution Approach 1:
The dynamic dampers are nested inside the hollow interior space of the gear body, utilizing the existing internal cavity to house the vibration reduction components. This integration eliminates the need for separate external damper housings, thereby reducing overall structural complexity while maintaining effective vibration control through the dampers positioned within the gear's internal geometry.
2Object-generated harmful factors
If dynamic dampers are added to reduce vibrations, then vibration reduction is improved, but weight of the gear increases
Solution Approach 1:
The dynamic dampers are nested inside the hollow interior space of the gear body, utilizing the existing internal cavity to house the vibration reduction components. This integration eliminates the need for separate external damper housings, thereby reducing overall structural complexity while maintaining effective vibration control through the dampers positioned within the gear's internal geometry.
3Strength
If connectors are used to connect toothed member and boss, then structural integrity is improved, but sealing properties deteriorate due to potential oil ingress
Solution Approach 1:
Sealing rings are installed at the connection interfaces between the connectors and the toothed member/boss to create flexible sealing barriers. These sealing rings prevent oil ingress into the hollow interior space while accommodating the structural connections, thereby maintaining both structural integrity and reliable sealing properties simultaneously.
4Ease of manufacture
If traditional gear design is used, then manufacturing is simpler, but maintenance and component replacement are more difficult and costly
Solution Approach 1:
The gear is segmented into distinct functional components: the toothed member, the boss, and the connectors, which are assembled together to form the complete gear structure. This modular segmentation allows individual components to be manufactured separately using standard processes, then assembled with connectors that facilitate easy disassembly and replacement of worn components such as the toothed member or dampers, significantly improving maintenance accessibility and reducing repair costs.
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 configuration effectively reduces vibrations, maintains sealing properties, and allows for easy replacement of components, resulting in a lighter, more efficient gear with reduced repair costs.
Implementation Method 1
a dynamic damper disposed in the sealed space
Implementation Method 2
the toothed member, the boss, the first connector, and the second connector define a sealed space
Data Source
AI summary
A gear includes a toothed portion, a boss, a first connector, a second connector, and a dynamic damper. The toothed portion is disposed at a radially outer side of the gear. The boss is disposed at a radially inner side of the gear. The first connector connects the toothed portion and the boss. The second connector connects the toothed portion and the boss. The second connector faces the first connector such that the toothed portion, the boss, the first connector, and the second connector define a sealed space. The dynamic damper is disposed in the sealed space.