Slip Clutch Heat Dissipation via Thread Pitch Recesses
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chain hoists with electric drive motors and slip clutches face challenges in efficiently dissipating heat, which can lead to overheating and potential damage, especially when the chain is hooked onto the no-load side, and existing solutions do not adequately address this issue without increasing the clutch's size.
Innovation Solution
The slip clutch is enhanced by incorporating recesses in the form of thread pitches on its outer surface, which increases the heat dissipation area and utilizes the conveying effect of the thread pitches to circulate gearbox oil for additional cooling, allowing for improved heat exchange without significant size increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the outer surface of the slip clutch is enlarged to improve heat dissipation, then the heat dissipation capability is improved, but the installation size of the clutch increases
Solution Approach 1:
The invention transitions from a flat outer surface to a three-dimensional thread pitch structure. The recesses formed as thread pitches create vertical dimensionality and surface complexity without increasing the clutch's external diameter or length, thereby enlarging the heat exchange surface area while maintaining compact installation dimensions
Solution Approach 2:
The thread pitch recesses create a porous-like structure on the outer surface of the slip clutch. This increased surface complexity provides more area for heat exchange with the surrounding environment and facilitates better thermal dissipation without requiring a larger overall clutch size
2Temperature
If the outer surface of the slip clutch is enlarged to improve heat dissipation, then adequate dissipation of heat can be achieved, but the structural complexity of the clutch increases
Solution Approach 1:
The outer surface is segmented into multiple recesses arranged in a thread pitch pattern. This segmentation increases the surface area for heat dissipation while maintaining a regular, systematic structure that does not significantly complicate manufacturing or assembly processes
Solution Approach 2:
The invention changes the geometric parameters of the outer surface by introducing recesses with specific dimensions and patterns. These parameter changes increase the heat exchange surface area while keeping the structural modifications within standard manufacturing capabilities, avoiding excessive complexity
3Temperature
If thread pitch recesses are formed on the slip clutch, then the conveying effect improves heat dissipation, but the manufacturing complexity increases
Solution Approach 1:
The thread pitch recesses serve multiple functions: they increase the heat exchange surface area, provide a conveying effect for heat dissipation, and can potentially serve as oil retention channels. This multi-functionality justifies the manufacturing complexity by delivering multiple benefits from a single structural feature
Solution Approach 2:
The thread pitch recesses can function as channels for conveying lubricating oil or cooling fluid across the slip clutch surface. This hydraulic/conveying effect enhances heat dissipation by facilitating fluid flow and heat carry-away, while the recesses can be integrated into standard machining processes
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
This design effectively enhances heat dissipation, ensuring compliance with continuous slip tests and reducing the risk of damage by maintaining a stable temperature, even during heavy use, while maintaining a compact size.
Implementation Method 1
the slip clutch has an enlarged outer surface in the form of recesses disposed in the outer surface of the slip clutch... to improve the dissipation of heat
Implementation Method 2
the conveying effect of the thread pitch... improved dissipation of heat is also achieved by the conveying effect of the thread pitch
Data Source
AI summary
A chain hoist having an electric drive motor connected to a gearbox by a slip clutch, wherein the slip clutch comprises an enlarged outer surface area in the form of recesses disposed in the outer surface of the slip clutch for improving heat dissipation with the recesses being implemented circumferentially in the form of a thread pitch in the outer surface of the slip clutch.