Conveyor Chain Tooth Base Web Design for Curve Stability

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Solution Overview

Problem

Conveyor chains with existing designs face instability issues when navigating curves, particularly due to the need for deepening tooth gaps and elongating teeth, which increases the risk of injury and mechanical instability.

Innovation Solution

The design incorporates partially filled tooth bases with webs on the edges of the conveyor plates, reducing the gap size between teeth and enhancing mechanical stability, while allowing for curved engagement without collision, using a cuboid core section and angled edge sides to maintain stability and prevent human intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the tooth gaps are deepened and teeth are elongated to enable curved engagement, then the curve capability is improved, but the mechanical stability deteriorates and the risk of injury increases

Engineering Contradiction:
Improvecurve capabilityVSAvoidmechanical stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by differentiating the treatment of tooth bases at different locations. Edge-side tooth bases are partially filled with webs to provide additional support and stability, while central tooth bases remain unfilled. This localized reinforcement allows the conveyor chain to navigate curves effectively while preventing the mechanical instability that would result from uniformly filling all tooth bases, thereby resolving the contradiction between curve capability and mechanical stability.

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If the tooth gaps are deepened and teeth are elongated to enable curved engagement, then the curve capability is improved, but the safety deteriorates due to increased risk of human intervention

Engineering Contradiction:
Improvecurve capabilityVSAvoidrisk of human intervention
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements local quality by selectively filling only the edge-side tooth bases with webs, while leaving central tooth bases unfilled. This localized approach reduces the gap width at the edges where the risk of human intervention is highest, while maintaining curve capability. The partial filling creates a safety barrier that prevents fingers or objects from penetrating into the tooth gaps, thereby resolving the contradiction between curve capability and safety.

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If the teeth are elongated to enable curved engagement, then the curve capability is improved, but the structural stability deteriorates

Engineering Contradiction:
Improvecurve capabilityVSAvoidstructural stability
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The patent applies local quality by providing selective reinforcement through webs at the edge-side tooth bases. These webs act as additional support structures that prevent excessive bending and deformation of the elongated teeth during curved engagement. By reinforcing only the edge-side teeth where the bending moment is highest, the patent maintains structural stability while preserving the curve capability enabled by the elongated teeth.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4428065A1Chain link for a curve-moving conveyor chain, curve-moving conveyor chain, and transfer system having curve-moving conveyor chain
Publication Date: 2024.09.11 ROBERT BOSCH GMBH
  • EP4428065A1 patent drawingFigure 1
  • EP4428065A1 patent drawingFigure 2
  • EP4428065A1 patent drawingFigure 3

AI summary

Disclosed is a chain link (1) for a curved conveyor chain (100) or a curved conveyor chain (100) for a transfer system (101), comprising a base chain link (2) designed and configured for coupling with other base chain links (2) of the conveyor chain (100), and on which a conveyor plate (4) is arranged, the conveyor plate being designed and configured to support a conveyed material on its upper surface (6), and having teeth (12) projecting from its front face (8) in the conveying direction (A) and teeth (14) projecting from its rear face (10) in the opposite direction (B), which are designed and arranged to form a toothed, curved engagement between adjacent conveyor plates (4) in the conveyor chain (100). Also disclosed are a conveyor chain with such chain links and a transfer system with such a conveyor chain.