Metal Elastic Coupling with Wire Cushions for High-Temperature Damping
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Solution Overview
Problem
Existing elastic couplings fail to withstand high temperatures, are susceptible to chemical degradation, and lack comprehensive damping capabilities for axial, radial, oblique, and torsional loads.
Innovation Solution
A metal-based elastic coupling design with parallel sleeves, metal bearings, and wire cushions providing axial, radial, torsional, and conical stiffness, assembled without lubrication and using only metal materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rubber is used as elastomeric material, then the coupling provides good elasticity and damping, but it cannot withstand high temperatures above 80°C and deteriorates when in contact with acids or chemicals
Solution Approach 1:
The patent changes the material parameter from rubber to metal (specifically stainless steel), fundamentally altering the temperature and chemical resistance characteristics while maintaining the coupling's structural function. This material substitution enables operation in high-temperature environments and resistance to chemical degradation.
Solution Approach 2:
The invention uses metal wire cushions arranged in specific patterns within a metal framework, creating a composite structure that combines the elasticity needed for damping with the heat and chemical resistance of metal materials.
2Reliability
If metal joints with axial shock absorbers are used, then the coupling can withstand high temperatures, but it only absorbs stress in the axial direction and lacks damping against radial, oblique or torsional loads
Solution Approach 1:
The patent divides the coupling into multiple independent metal wire cushions arranged in different orientations (axial, radial, and angular). Each cushion handles specific directional loads, collectively providing comprehensive multi-axial damping capability while maintaining temperature resistance.
Solution Approach 2:
The invention extends the damping capability from single-axis to multi-axis by adding wire cushions in radial and angular dimensions. This dimensional expansion allows the coupling to absorb stresses in axial, radial, oblique, and torsional directions simultaneously.
3Reliability
If deformable cushions are arranged between rotatory elements, then the coupling provides elasticity, but the structure becomes complex requiring precise alignment and assembly
Solution Approach 1:
The patent places metal wire cushions at specific locations within the coupling structure where they are constrained by metal frameworks. This localized arrangement provides elasticity at critical points while the rigid metal framework maintains structural integrity and simplifies overall assembly.
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 coupling offers stable fastening, absorbs torque irregularities, tolerates misalignments, operates silently, and withstands high temperatures without play or lubrication, providing a lightweight and economical solution.
Implementation Method 1
the incorporation of the metal cushions providing elasticity to the coupling
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Elastic coupling comprising two sleeves (1a, 1b) to be coupled to respective shafts (E1, E2) and provided with holes (12) aligned with cylindrical recesses (13) for receiving metal bearings (3) mounted on bolts (21) of a metal body (2) arranged between said sleeves (1a, 1b). Said metal bearings (3) comprise an annular metal part (31) contacting an outer surface against the inner surface of the corresponding recess (13) of one of the sleeves (1a, 1b); an inner metal wire cushion (33) forming a contact surface of the metal bearing (3) with the corresponding bolt (21) of the body (2), and lateral metal wire cushions (34) protruding from the opposite ends of the annular part (31) and forming the contact surfaces of the metal bearing (3) with the facing faces of the body (2) and of the corresponding sleeve (1a, 1b).