Dual-shaft shredder quick-change coupling mechanism

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Solution Overview

Problem

Operators of dual-shaft shredders with synchronous drive face significant challenges in efficiently changing, maintaining, and repairing the shaft system due to time-consuming and labor-intensive processes, leading to unsuitable equipment usage, increased wear, and reduced availability.

Innovation Solution

A shredding device with a displacement device that allows synchronized shredding shafts to be moved as a unit, along with maintenance flaps and a re-design of the housing for easier access and removal of components, reducing the need for external displacement devices and simplifying the installation and maintenance process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If the shaft system is changed using conventional methods, then the shredder can be maintained and repaired, but the process is time-consuming and labor-intensive

Engineering Contradiction:

Improveease of shaft system changeVSAvoidtime for shaft system change

Core Design Contradiction:

Ease of repairVSLoss of time

Solution Approach 1:

The shaft system is divided into modular components with standardized coupling elements. The coupling element is separated into a shaft-side portion and a housing-side portion, allowing the shaft to be independently removed from the housing without dismantling the entire shredder structure. This segmentation enables rapid replacement of shafts while maintaining the integrity of the housing and drive mechanisms.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coupling elements are pre-designed with alignment features and connection mechanisms that facilitate quick attachment and detachment. The shaft-side coupling element is pre-mounted on the shaft, and the housing-side coupling element is pre-installed in the housing, so that when maintenance is needed, the shaft can be quickly disconnected and replaced without requiring complex assembly procedures or external displacement devices.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If the shaft system is changed frequently to match different shredding tasks, then equipment adaptability improves, but wear increases and availability decreases

Engineering Contradiction:

Improveadaptability to different shredding tasksVSAvoidequipment availability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The coupling element design provides a universal interface that can accommodate different shaft configurations while maintaining the same connection mechanism. The standardized coupling allows various shaft types to be quickly interchangeably mounted in the same housing, enabling the shredder to adapt to different shredding tasks without requiring multiple specialized mounting systems. This universality reduces the frequency of complex maintenance operations while maintaining task adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11192115B2Dual-shaft shredder having a quick-change device

Publication Date: 2021.12.07 MANUEL LINDNER

AI summary

A shredding device is provided comprising two shredding shafts arranged parallel to each other with shredding elements arranged thereon, wherein the shredding shafts are preferably rotatable mechanically synchronized to each other. A shaft-side coupling element is connected to a respective first end of the shredding shafts. The shredding device includes a housing with a housing-side coupling element is provided that can be coupled to the shaft-side coupling element. The shredding device includes a displacement device enabling displacement of the shredding shafts for decoupling and coupling the shaft-side coupling element from or to the housing-side coupling element.