Interchangeable Compactor Roller Holder Design

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Solution Overview

Problem

Existing compactor rollers are limited in their versatility and stability, particularly when dealing with diverse substrates such as cohesive soils, clay, loamy soils, rock, and rock heaps, as they lack sufficient crushing properties and are not easily adaptable for different soil types.

Innovation Solution

A compactor roller design featuring interchangeable holders on its outer circumference, allowing for the attachment and detachment of roller tools like pad feet and chisels, with a tapering connection and support area for stability, and a locking mechanism to secure tools firmly, enabling easy replacement and adaptation for various soil types without disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If roller tools are permanently fixed by welding on the compactor roller, then the connection is stable and strong, but the roller tools cannot be easily replaced or adapted for different soil types

Engineering Contradiction:
Improveadaptability for different soil typesVSAvoidease of tool replacement
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The compactor roller is divided into modular components: the roller body and interchangeable roller tools. The roller tools can be independently attached and detached, allowing segmentation of the tooling system for easy replacement and adaptation to different soil conditions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The compactor roller is designed with a universal mounting interface that can accommodate multiple types of roller tools (e.g., pad feet for cohesive soils, chisels for rock heaps). This multi-functionality allows a single roller body to serve various purposes by simply changing the attached tool.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If roller tools are permanently fixed by welding on the compactor roller, then the structural integrity is maintained, but worn tools cannot be easily replaced

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of tool replacement
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The connection between the roller tool and compactor roller transitions from a static welded joint to a dynamic interchangeable connection. The tool can be firmly attached during operation for reliability, yet quickly removed and replaced when worn, combining structural stability with ease of repair.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the compactor roller is designed with interchangeable holders, then versatility and ease of tool replacement are improved, but the device complexity increases

Engineering Contradiction:
Improveversatility for different substratesVSAvoidcomplexity of holder arrangement
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

An interchangeable holder serves as an intermediary component between the compactor roller body and the roller tools. This mediator simplifies the overall system by providing a standardized interface, reducing the complexity of direct tool-to-roller connections while enabling versatility.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If the interchangeable holder tapers from the connection area to the support area, then stability and holding interaction are improved, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveholding stabilityVSAvoidprecision of taper geometry
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The holder features a tapered geometry that transitions from the connection area to the support area, creating a curved or conical surface. This curvature distributes loads more effectively and improves contact stability, though it requires careful manufacturing to achieve the precise taper angle and surface continuity.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentEP3093393B1Compressor roller for a soil compactor
Publication Date: 2017.06.14 HAMM AG
  • EP3093393B1 patent drawingFigure 1~2
  • EP3093393B1 patent drawingFigure 3~4
  • EP3093393B1 patent drawingFigure 5~6

AI summary

The invention relates to a compactor roller for a soil compactor, comprising at least one exchangeable holder (22) on an outer circumference in order to attach a rolling tool (16).