Attachment Device Rolling Contact Tilting Resistance

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Solution Overview

Problem

Existing attachment devices for heavy articles face challenges in achieving both high tilting resistance and rotatability, particularly when dealing with heavy loads, due to limitations in sliding mounting and the use of a single series of rolling-contact bodies.

Innovation Solution

The attachment device employs two series of rolling-contact bodies spaced apart for increased tilting resistance, replacing sliding mounting with an easy-to-install rolling-contact mounting, allowing for improved relative movement and rotatability by supporting the connecting element via these bodies between the annular flanges of a two-part bushing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If sliding mounting is used for the connecting element on the bushing, then the device structure is simple, but the rotatability is insufficient when handling heavy loads

Engineering Contradiction:

ImproverotatabilityVSAvoidmounting structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the sliding friction-based mechanical mounting with a rolling-contact bearing system. The connecting element is supported on the bushing via rolling-contact bodies (ball bearings or roller bearings) that reduce friction and enable smooth rotation even under heavy loads, while the two-part bushing design keeps the overall structure manageable.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Stability of the object's composition

If a single series of rolling-contact bodies is used, then the rotatability is improved, but the tilting resistance is limited

Engineering Contradiction:

Improvetilting resistanceVSAvoidrotatability

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The patent divides the rolling-contact support into two separate series of rolling-contact bodies arranged at different locations on the bushing. This segmentation provides multiple support points that collectively resist tilting moments while maintaining rotatability, as each series independently contributes to both rotation and tilting resistance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from a single-line arrangement of rolling-contact bodies to a two-dimensional distribution pattern with two series arranged at different angular positions on the bushing. This spatial arrangement in multiple dimensions enhances tilting resistance by providing broader geometric support while preserving rotational freedom.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Ease of operation

If two-part bushing with rolling-contact bodies is used, then the rotatability and tilting resistance are improved, but the assembly complexity increases

Engineering Contradiction:

ImproverotatabilityVSAvoidassembly ease

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The bushing is divided into two separable parts that can be assembled around the connecting element in a staged manner. The first series of rolling-contact bodies is installed in the first bushing part, then the connecting element is positioned, and finally the second bushing part is added with the second series of rolling-contact bodies, simplifying the overall assembly process.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rolling-contact bodies are pre-positioned within the bushing parts before final assembly. This preliminary arrangement ensures proper alignment and reduces assembly complexity, as the rolling elements are already in their correct positions when the bushing parts are joined together.

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enhances the attachment device's assembly speed, provides high tilting resistance, and ensures excellent rotatability even when handling heavy loads, making it suitable for various applications.

Implementation Method 1

the connecting element is supported on the bushing, in the region of the annular flanges of the bushing, via a series of rolling-contact bodies in each case

Methodology Applied

Scientific EffectRolling contact: Roller

Implementation Method 2

replacing the sliding mounting with an easy-to-install rolling-contact mounting

Methodology Applied

Scientific EffectFriction reduction: Friction

Data Source

PatentUS9255625B2Attachment device for attaching slinging or lashing means

Publication Date: 2016.02.09 RUD KETTENFABRIK RIEGER & DIETZ GMBH & CO

AI summary

Disclosed is an attaching device for attaching stopping or lashing means to objects that are to be transported or tied down, comprising a fixing element (1), an attaching element (16), and a connecting element (15) which is rotatably mounted on a socket (4) wrapped around the fixing element (1) and connects the attaching element (16) to the fixing element (1). The connecting element (15) leans against ring flanges (6, 7) placed at the ends of the socket (4) via series of rolling bodies (12, 13) so as to allow said connecting element (15) to rotate without jerking and make is sufficiently tilt-proof.