Radial Shaft Coupling for Fast Release Without Axial Movement

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Solution Overview

Problem

Existing shaft coupling devices require axial displacement of shafts to release the coupling, making the process time-consuming and laborious, especially for heavy machines like comminutors.

Innovation Solution

A shaft coupling device with first and second shaft hubs featuring receiving units arranged circumferentially, allowing connection elements to be inserted and secured radially, enabling coupling and decoupling without axial displacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional couplings are used to connect shafts, then the connection is secure and reliable, but the release process requires axial displacement of shafts which is time-consuming and laborious

Engineering Contradiction:
Improveease of releaseVSAvoidtime for release
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The coupling device is segmented into multiple independent connection elements (at least two) that can be individually operated. Each connection element can be released independently by rotating it relative to the shaft hub, allowing incremental disengagement without requiring full axial displacement of the shaft. This segmentation enables the release process to be performed in steps, reducing the overall time and effort required.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention transitions from axial displacement (one-dimensional linear motion) to rotational movement (circular motion in a different dimension) for releasing the coupling. By arranging connection elements circumferentially around the shaft hub and enabling their rotation relative to the hub, the release mechanism operates in a rotational dimension rather than requiring axial movement, thereby solving the problem of time-consuming and laborious release.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If conventional couplings are used to connect heavy rotor shafts, then the connection is secure, but the release process becomes complex and laborious due to the weight of the shafts

Engineering Contradiction:
Improveease of releaseVSAvoidcomplexity of release process
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The coupling device is divided into multiple independent connection elements distributed circumferentially around the shaft hub. Each connection element can be operated independently through simple rotational movement, breaking down the complex task of releasing a heavy shaft into multiple simple, manageable steps. This reduces the overall complexity of the release process compared to conventional single-piece couplings that require complex axial displacement mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of moving the heavy shaft axially to release the coupling (conventional approach), the invention inverts the approach by keeping the shaft stationary and rotating the lighter connection elements relative to the shaft hub. This inversion transforms a complex, heavy-lifting operation into a simple rotational movement of lightweight components, thereby reducing device complexity and operational difficulty.

Inventive Principle:
Principle #13The other way round (Inversion)

3Productivity

If connection elements are arranged circumferentially on shaft hubs, then coupling and decoupling can be performed without axial displacement, but the structural design becomes more complex

Engineering Contradiction:
Improvespeed of coupling and decouplingVSAvoidstructural complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The circumferential arrangement of multiple independent connection elements around the shaft hub allows parallel operation during coupling and decoupling. Multiple connection elements can be engaged or disengaged simultaneously or in sequence without interfering with each other, significantly increasing the speed of the coupling process compared to sequential single-element operations. The segmented design enables efficient utilization of workspace and facilitates rapid maintenance operations.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20250128265A1Shaft coupling and comminuting device having such a shaft coupling
Publication Date: 2025.04.24 LINDNER MANUEL
  • US20250128265A1 patent drawing
  • US20250128265A1 patent drawing
  • US20250128265A1 patent drawing

AI summary

The present invention relates to a shaft coupling device (10) and to a comminuting device having such a shaft coupling device (10). The shaft coupling device (10) has a first shaft hub (11) of a first shaft, the first shaft hub (11) having a plurality of first receiving units, a second shaft hub (14) of a second shaft, the second shaft hub (14) having a plurality of second receiving units, and a plurality of connection elements (12) for connecting the first shaft hub (11) to the second shaft hub (14). The plurality of first receiving units are arranged at a distance from each other along the circumference of the first shaft hub (11), and the plurality of second receiving units are arranged at a distance from each other along the circumference of the second shaft hub (14). The connection elements (12) are secured preferably in the recesses of the first shaft hub (11) by means of screws (13).