Transversely Stiffened Conveyor Belt for Bale Press Stability

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Solution Overview

Problem

Conveyor belts in bale presses face issues with tensioning complexity, material loss, and operational disruptions due to belt collisions and lateral instability, particularly when reduced from multiple belts to fewer, wider belts, which can lead to tipping and operational interruptions.

Innovation Solution

The integration of transverse stiffening elements within the polymer layer of the belt to enhance transverse rigidity, maintaining a stiffness ratio of at least 2:1 between transverse and longitudinal stiffness, preventing folding or bending during operation while ensuring flexibility in the longitudinal direction, thus allowing for wider belts with reduced assembly effort and improved operational reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the number of parallel belts is reduced to fewer, wider belts, then assembly complexity and material loss are reduced, but the belts become unstable and prone to lateral folding during operation

Engineering Contradiction:
Improveassembly complexityVSAvoidlateral stability
Core Design Contradiction:
Device complexityVSStability of the object's composition

Solution Approach 1:

The patent applies local quality by embedding transverse stiffening elements only in specific regions of the belt where lateral stability is needed, rather than making the entire belt rigid. This allows the belt to maintain flexibility in the longitudinal direction while gaining resistance to lateral folding through localized reinforcement with stiffening elements spaced at intervals across the belt width.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent uses composite materials by combining the flexible belt material with embedded transverse stiffening elements to create a hybrid structure. This composite construction provides the necessary lateral rigidity to prevent folding while preserving the longitudinal flexibility required for belt operation, resolving the contradiction between stability and flexibility.

Inventive Principle:
Principle #40Composite materials

2Stability of the object's composition

If transverse stiffening elements are embedded in the polymer layer, then transverse rigidity is enhanced and belt folding is prevented, but the belt structure becomes more complex

Engineering Contradiction:
Improvetransverse rigidityVSAvoidbelt structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the stiffening function into discrete transverse stiffening elements spaced at intervals along the belt, rather than using a continuous rigid structure. This segmented approach provides adequate transverse rigidity to prevent folding while keeping the overall structure simpler and more flexible than a fully rigid belt would require.

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If multiple parallel belts are used, then lateral stability is maintained, but tensioning complexity and operational disruptions increase

Engineering Contradiction:
Improvelateral stabilityVSAvoidtensioning complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies merging by consolidating multiple separate belt systems into a single wider belt with embedded stiffening elements. This combines the lateral stability function that previously required multiple parallel belts into one integrated structure, eliminating the complex tensioning mechanisms needed for multiple belts while maintaining operational reliability.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP3839287B1Belt as endless traction means for conveyor belts of bale presses or bale winders
Publication Date: 2022.01.12 ARNOLD JAGER HLDG GMBH
  • EP3839287B1 patent drawingFigure 1a~3
  • EP3839287B1 patent drawingFigure 2a~2c
  • EP3839287B1 patent drawingFigure 4~5

AI summary

The invention relates to a belt (1) as an endless tensile element for conveyor belts of baling presses, comprising at least one fabric layer (2) which is embedded at least partially in a polymer layer (3) to form an endless belt (1) reinforced by the at least one fabric layer (2). According to the invention, it is provided that transverse stiffening elements (13) are embedded in the polymer layer (3) to increase the transverse stiffness (QS) of the belt (1), wherein the transverse stiffening elements (13) are oriented substantially in a transverse direction (Q) of the belt (1) and the belt (1) has a stiffness ratio (QS/LS) between the transverse stiffness (QS) and a longitudinal stiffness (LS) of at least 2:1, at least in the region of the transverse stiffening elements (13).