Elastic Bearing Mounting for Vibrating Screen Eccentric Drive
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Solution Overview
Problem
Vibrating screening machines with eccentric drives face challenges in dynamic balance, peak load absorption, and maintenance complexity due to rigid external bearing connections, leading to potential damage and increased costs.
Innovation Solution
The external bearing arrangements are elastically mounted using two bearing rings within a housing, allowing radial and axial flexibility, which simplifies assembly and absorbs dynamic forces without a complex console, preventing material damage and facilitating maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the outer bearing is rigidly fixed to the support frame, then the screen box carries out a defined circular movement, but the screening machine introduces strong vibrational oscillations into the supporting base and is not fully dynamically balanced
Solution Approach 1:
The patent introduces an elastic mounting arrangement as an intermediary element between the outer bearing and the support frame. This elastic mounting acts as a mediator that transmits the necessary forces for circular movement while filtering out harmful vibrations, thus resolving the contradiction between maintaining defined motion and reducing vibration transmission to the base.
2Device complexity
If the outer bearing is rigidly fixed to the support frame, then the mechanical design is simple, but impacts on the screen decks are dissipated undamped via the bearings, causing peak loads that can damage components
Solution Approach 1:
The elastic mounting arrangement serves as a pre-installed cushioning element that absorbs impacts and dampens peak loads before they can transmit through the bearing system to damage components. This beforehand cushioning protects the bearing arrangement and drive shaft from shock loads while maintaining relatively simple mechanical design.
3Reliability
If a console with spring and damper assemblies is used to mount the external bearing, then the arrangement is fully dynamically balanced and absorbs shocks, but the console is complex and material-intensive, increasing costs and space requirements
Solution Approach 1:
The patent merges the functions of the console, springs, and dampers into a single integrated elastic mounting arrangement. This combined structure performs all necessary functions - supporting the outer bearing, providing dynamic balance, and absorbing shocks - without requiring separate console and vibration isolation components, thus reducing complexity and material usage while maintaining reliability.
4Reliability
If a console is added to mount the external bearing, then shock absorption improves, but access to bearings and drive components becomes difficult, complicating maintenance work
Solution Approach 1:
The elastic mounting arrangement is designed as a segmented, modular structure that allows easy access to the bearing and drive components. The segmentation enables maintenance personnel to access critical components without removing entire console structures, thus maintaining shock absorption capability while significantly improving ease of repair and maintenance accessibility.
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 solution provides a cost-effective, dynamically balanced screening machine that effectively absorbs shocks and vibrations, reducing the risk of damage and enhancing maintenance accessibility.
Implementation Method 1
at least one bearing which is held elastically within a bearing housing in the radial and axial direction by at least two elastic bearing rings surrounding the bearing, the elastic bearing rings being in a mounted state compressed in the outer bearing housing
Data Source
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AI summary
The invention relates to a vibrating screen machine with an eccentric drive connected via a driveshaft (11), which is mounted in outer bearing arrangements (10) fixed to a supporting frame (1) of the vibrating screen machine and which is mounted in inner bearing arrangements (12) fixed to a screen box (4) of the vibrating screen machine. The driveshaft is arranged eccentrically at least in the inner bearing arrangements (12). Said vibrating screen machine is characterized in that each of the outer bearing arrangements (10) has at least one bearing (104) which is held within a bearing housing (100) in an elastic manner at least in the radial direction by means of at least one elastic bearing ring (110a, 110b) that surrounds the bearing (104), said elastic bearing ring (110a, 110b) being compressed in the outer bearing housing (100) when in the mounted state.