Axially Clamped Elastic Coupling for Agricultural Drives
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Solution Overview
Problem
Existing elastic couplings for agricultural drives face challenges in achieving a compact design with high torque capacity while effectively absorbing vibrations and ensuring fail-safe operation.
Innovation Solution
The elastic coupling features an axially clamped elastic element between two coupling elements, with angular prestress and adjustable damping via a clamping device, incorporating a centering pin and plain bearing bush for transverse force absorption, and a tensioning device that allows limited rotation and vibration absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the elastic element is firmly connected to both coupling elements to transmit entire torque, then torque capacity is improved, but the coupling becomes less compact and more complex
Solution Approach 1:
The coupling is divided into two independent coupling elements that are not materially connected, with the elastic element serving as the sole torque transmission medium between them. This segmentation simplifies the overall structure while maintaining torque capacity through the elastic element's deformation capabilities.
Solution Approach 2:
The elastic element acts as an intermediary between the two coupling elements, transmitting torque through its deformation rather than through direct material connection. This mediator approach allows torque transmission while maintaining structural simplicity and compactness.
2Reliability
If the elastic element is clamped between coupling elements with angular prestress, then vibration absorption is improved, but the clamping force requirements increase
Solution Approach 1:
The elastic element is pre-stressed with angular prestress during assembly, creating initial deformation that enhances its vibration absorption capability during operation. This preliminary action prepares the elastic element to better absorb subsequent vibrations without requiring excessive clamping force.
Solution Approach 2:
The angular prestress changes the initial state parameters of the elastic element, optimizing its mechanical properties for vibration absorption. By adjusting the prestress angle and magnitude, the coupling achieves reliable vibration damping while managing clamping force requirements.
3Adaptability or versatility
If the elastic element is designed separately from coupling elements to enable exchange, then adaptability is improved, but manufacturing complexity increases
Solution Approach 1:
The elastic element is designed as a separate, exchangeable component independent of the coupling elements. This segmentation allows different elastic elements with varying stiffness and torque capacities to be used by simply replacing the elastic element, enhancing adaptability while keeping the coupling elements as standardized components.
Solution Approach 2:
The coupling elements are designed with universal mounting features that can accommodate different elastic elements. This universality allows the same coupling elements to work with multiple types of elastic elements, facilitating easy exchange and adaptation without requiring custom coupling elements for each application.
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 results in a compact, high-torque capable coupling that effectively absorbs vibrations and ensures fail-safe operation by distributing clamping forces radially and allowing limited rotational movement, enhancing the reliability and efficiency of agricultural machinery drives.
Implementation Method 1
The elastomer element is subjected to shear and torsion stress. In addition, the elastomer element absorbs vibrations and oscillations.
Implementation Method 2
the elastomer element absorbs vibrations and oscillations
Implementation Method 3
the at least one elastic element is axially clamped between the two coupling elements by means of at least one clamping device
Data Source
Figure 1~2
Figure 3
AI summary
Elastic coupling for agricultural drives, which can be driven by rotating about a rotary axis D, comprising: two coupling elements 1, 2 and at least one elastic element 3, which is arranged between the two coupling elements 1, 2, wherein the at least one elastic element 3 is axially clamped between the two coupling elements 1, 2 by means of at least one clamping device 4.