Carousel Bearing Preload Ring for Vibration-Stable Filling Machines

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Solution Overview

Problem

Existing bearing arrangements in beverage filling installations experience oscillations and vibrations due to undefined bearing loads, and the adjustment of preload in adjusted bearing assemblies is complex and prone to errors, leading to excessive friction or inadequate bracing.

Innovation Solution

A ring-shaped preload unit with multiple spring assemblies distributed uniformly around the longitudinal axis provides a precise and uniform preload to the adjusted bearing assembly, allowing for easy adjustment and reduced maintenance, using a combination of disc springs, wave springs, and nut elements to ensure consistent force distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If an adjusted bearing assembly with two angular contact bearings is used to avoid oscillations and vibrations, then the stability of the upper part is improved, but the complexity of adjusting the preload increases and becomes prone to errors

Engineering Contradiction:
Improvestability of the upper partVSAvoidcomplexity of adjusting the preload
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The bearing assembly is designed to self-adjust the preload through the interaction of the two angular contact bearings and the bearing shaft. The geometry of the bearing shaft and bearings automatically establishes the correct preload force without requiring external adjustment mechanisms, eliminating the complexity of manual preload adjustment while maintaining stability.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention changes the approach from manually adjusting preload parameters to using the inherent geometric parameters of the bearing shaft and bearings. By carefully designing the dimensions and angles of the bearing shaft and bearings, the correct preload is achieved through the natural fit and interaction of components, rather than through complex adjustment procedures.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If a floating bearing assembly is used to reduce manufacturing costs, then the manufacturing cost is reduced, but the upper part exhibits oscillations and vibrations during operation

Engineering Contradiction:
Improvemanufacturing costVSAvoidoscillations and vibrations of the upper part
Core Design Contradiction:
Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The bearing assembly automatically generates the necessary preload through the interaction of the two angular contact bearings mounted on the bearing shaft. This self-adjusting mechanism eliminates the need for complex preloading devices while maintaining stability, achieving both low cost and high stability through the inherent properties of the bearing configuration.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention uses a composite approach combining two angular contact bearings with specific geometric configurations to create a bearing assembly that provides both stability and cost-effectiveness. The combination of bearing types and their arrangement on the bearing shaft creates a system that is more effective than simple floating bearings but less complex than heavily preloaded assemblies.

Inventive Principle:
Principle #40Composite materials

3Strength

If too high a preload is applied to the adjusted bearing assembly, then the bracing is improved, but excessive friction in the rolling bearings leads to excessive wear and impairs free movement

Engineering Contradiction:
Improvebracing of the bearing assemblyVSAvoidwear and free movement of the rolling bearings
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The bearing assembly self-regulates the preload force through the geometric interaction of the two angular contact bearings and the bearing shaft. The system automatically establishes the optimal preload level without external intervention, preventing both under-bracing and over-bracing conditions that would lead to wear or impaired movement.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention optimizes the preload parameter by using the inherent geometric parameters of the bearing shaft and bearings rather than applying excessive preload. The carefully designed dimensions and angles ensure that the preload is sufficient for stability but not excessive enough to cause wear or movement impairment.

Inventive Principle:
Principle #35Parameter changes

4Reliability

If too low a preload is applied to the adjusted bearing assembly, then the wear and friction are reduced, but the bearing assembly exhibits play and inadequate bracing analogous to floating bearing assemblies

Engineering Contradiction:
Improvewear and friction of the rolling bearingsVSAvoidplay and inadequate bracing of the bearing assembly
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The bearing assembly automatically generates sufficient preload through the interaction of the two angular contact bearings and the bearing shaft geometry. This self-adjusting mechanism ensures that the preload is always adequate to eliminate play and provide proper bracing, regardless of external conditions, while avoiding excessive preload that would increase wear.

Inventive Principle:
Principle #25Self-service

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 solution achieves precise preload setting with uniform force distribution, reducing oscillations, maintaining low manufacturing costs, and simplifying maintenance by allowing for easy scaling of the preload force, thus enhancing the stability and efficiency of the container processing carousel.

Implementation Method 1

The ring-shaped preload unit comprises a multiplicity of spring assemblies, which are distributed uniformly in a circumferential direction about the longitudinal axis, for applying the preload to the adjusted bearing assembly

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12188518B2Bearing arrangement for the mounting of a container processing carousel with respect to a base frame of a container processing apparatus in a beverage filling installation
Publication Date: 2025.01.07 KRONES AG
  • US12188518B2 patent drawing
  • US12188518B2 patent drawing
  • US12188518B2 patent drawing

AI summary

A bearing arrangement for the mounting of a container processing carousel with respect to a base frame of a container processing apparatus in a beverage filling installation, comprising including a bearing shaft which extends along a longitudinal axis, a bearing cup which is rotatable relative to the bearing shaft, an adjusted bearing assembly, arranged between the bearing shaft and the bearing cup, for the mounting of the bearing cup with respect to the bearing shaft, and a ring-shaped preload unit for imparting a specified preload to the adjusted bearing assembly, wherein the ring-shaped preload unit includes a multiplicity of spring assemblies, which are distributed uniformly in a circumferential direction about the longitudinal axis, for applying the preload to the adjusted bearing assembly. A container processing apparatus including the bearing arrangement, and a method for preloading an adjusted bearing assembly of the bearing arrangement are described.