Gear Unit Housing Trough for Oil Conveyance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gear units face inefficiencies in oil distribution and splashing losses, requiring effective lubrication of bearings and gear teeth while minimizing material usage and production costs.
Innovation Solution
A gear unit housing design featuring a trough surrounding the gear wheel with a bottom plate and side walls, allowing oil to be conveyed from the oil pan to a higher location, reducing splashing losses through a narrow gap and enabling cost-effective production with stamped bent parts, and a frame-like support section for enhanced stability and material efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a trough is used to guide oil and reduce splashing losses, then oil distribution efficiency is improved, but device complexity increases
Solution Approach 1:
The trough is divided into a bottom plate and two side walls that can be assembled separately, reducing manufacturing complexity while maintaining the oil guidance function
Solution Approach 2:
The trough is constructed from thin stamped bent parts that are easy to manufacture and assemble, reducing the overall complexity of the structure while effectively guiding oil flow
2Ease of manufacture
If the trough is constructed from multiple stamped bent parts, then ease of manufacture is improved, but manufacturing precision requirements increase
Solution Approach 1:
The trough is segmented into separate stamped parts (bottom plate and side walls) that can be manufactured independently using standard stamping processes, improving ease of manufacture while allowing for modular assembly
Solution Approach 2:
The design specifies a constant radial distance parameter between the bottom plate and gear tooth crowns, standardizing the gap dimension to ensure consistent oil flow characteristics across different gear unit configurations
3Productivity
If the bottom plate is positioned at a small radial distance from gear teeth, then oil pumping efficiency is improved, but risk of contact and wear increases
Solution Approach 1:
The radial distance between the bottom plate and gear tooth crowns is optimized to a specific small value that enables effective oil pumping while maintaining sufficient clearance to prevent contact and wear under normal operating conditions
4Stability of the object's composition
If the housing uses a frame-like support section, then structural stability is improved, but material usage increases
Solution Approach 1:
The housing is divided into a frame-like support section and wall sections with different thickness requirements, allowing material to be concentrated where structural stability is needed while minimizing material usage in non-critical areas
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 design ensures efficient lubrication of bearings and gear teeth, reduces splashing losses, and achieves high stability with minimal material usage, making it cost-effective and suitable for various gear sizes.
Implementation Method 1
During rotational movement of the gear wheel, oil is conveyed from the oil pan of the gear unit through the opening between the trough and gear wheel, especially to a position higher than the level of the oil pan
Implementation Method 2
losses due to splashing are able to be reduced. To that end, the gap between the rotating gear wheel and the trough, especially the bottom plate of the trough, must be made small
Data Source
AI summary
A gear unit includes a housing, a trough for guiding oil and reducing losses due to splashing surrounding a circumferential section of a toothing part, particularly a gear wheel, especially in the radial and axial direction. The trough includes at least three parts, e.g., at least one bottom plate and two side walls, the bottom plate being screw-connected to the two side walls. The trough is fastened to the housing and includes an opening, particularly a channel, especially at its lowest surface area, e.g., particularly at the surface area having the greatest radial distance. In particular, during rotational movement of the gear wheel, oil is conveyed from the oil pan of the gear unit through the opening between the trough and gear wheel, especially to a position higher than the level of the oil pan. The bottom plate and the side walls are stamped bent parts.