Conveyor Belt Splice With Reverse-Turn Edges for Tool-Free Repair

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Solution Overview

Problem

Conventional conveyor belts require specialized tools and skills for splicing and maintenance due to button head or clinched rod ends, leading to increased downtime and resource challenges in repair and maintenance.

Innovation Solution

A conveyor belt design featuring reverse-turn closed edges on outer edge links that pivotally interconnect transverse rods, allowing for tool-free splicing and easy repair by restricting rod movement with a reverse-turn closed edge configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If button head ends or welded ends are used for rod retention, then the conveyor belt can maintain structural integrity, but special tools such as grinder, bolt cutters, and welding equipment are required for splicing and maintenance

Engineering Contradiction:
Improvestructural integrityVSAvoidsplicing and maintenance operation
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The patent extracts the rod ends from the belt structure during maintenance operations. The removable rod ends can be taken out and discarded, eliminating the need for cutting or grinding operations. This allows technicians to simply remove the rod ends to access and replace rods, significantly simplifying maintenance compared to conventional welded or permanently attached rod ends

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The rod ends are designed to nest within the belt structure during normal operation, providing structural integrity similar to welded ends. However, they can be easily extracted when needed for maintenance, combining the benefits of permanent attachment during operation with easy removal for maintenance

Inventive Principle:
Principle #7Nested doll (Nesting)

2Ease of repair

If conventional splicing methods with button head ends are used, then the belt can be repaired, but increased downtime and specialized skill requirements occur

Engineering Contradiction:
Improvebelt repair capabilityVSAvoidmaintenance downtime
Core Design Contradiction:
Ease of repairVSLoss of time

Solution Approach 1:

The patent segments the rod retention system into removable rod ends that can be independently accessed and replaced. This segmentation allows maintenance personnel to quickly remove rod ends, replace rods, and reassemble the belt without time-consuming welding or cutting operations, significantly reducing maintenance downtime

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The removable rod ends are designed to be easily manipulated by maintenance personnel without requiring specialized welding skills or expensive equipment. The system enables self-service maintenance where technicians can perform repairs with basic hand tools, reducing dependency on highly skilled workers and specialized equipment

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If threaded connector rods with end nuts are used, then rod replacement can be performed, but special tools and skills are still required

Engineering Contradiction:
Improverod replacement capabilityVSAvoidtool and skill requirements
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs disposable rod ends that are simple in design and can be easily replaced. Rather than using complex threaded connector rods with nuts that require threading tools and adjustment skills, the simple disposable rod ends can be quickly removed and replaced with basic hand tools, reducing both device complexity and skill requirements

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Data Source

PatentEP3746379B1Splice system for conveyor belt
Publication Date: 2025.09.24 CAMBRIDGE INTERNATIONAL INC
  • EP3746379B1 patent drawingFigure 1~2
  • EP3746379B1 patent drawingFigure 3
  • EP3746379B1 patent drawingFigure 4

AI summary

A splice system for a conveyor belt system includes a plurality of spaced tractive rods; a plurality of rows of flat wire pickets transversely disposed with respect to a direction of travel and interconnecting the plurality of spaced tractive rods, wherein at least one of the rows of flat wire pickets includes an outer edge link on each end thereof, the outer edge link including a reverse-turn closed edge on an outer side thereof; and wherein movement of at least one of the plurality of rods is restricted by the reverse-turn closed edge on the outer edge link.