Soil Compaction Roller with Segmented Lubrication Chambers

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Solution Overview

Problem

Current soil cultivation rollers lack sufficient security against incorrect operation during lubrication, as the existing fluid chamber design does not prevent the wrong fluid chamber from being emptied or filled, leading to potential misoperation.

Innovation Solution

The design introduces two separate fluid chambers with distinct opening groups, where the positioning of drain and fill level control openings changes with the roller's rotation, ensuring that only one pair of openings is accessible at a time, preventing incorrect interaction with the fluid chambers, and utilizing a shielding element with release recesses for visual inspection and access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple opening groups for different fluid chambers are provided in the roller interior, then lubrication of different functional groups can be performed independently, but the risk of incorrect operation increases due to potential misidentification of openings

Engineering Contradiction:
Improveindependent lubrication capabilityVSAvoidoperation safety
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The roller interior is segmented into multiple independent fluid chambers (first fluid chamber, second fluid chamber), each with its own opening group. This segmentation allows independent lubrication of different functional groups while maintaining clear distinction between chambers through physical separation and unique identification features for each opening group.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If all opening groups are always accessible for inspection, then ease of maintenance is improved, but the risk of incorrect operation increases due to lack of clear identification

Engineering Contradiction:
Improveinspection accessibilityVSAvoidoperation safety
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The accessibility of opening groups is made dynamic through roller rotation. Different opening groups become accessible at different rotational positions, allowing inspection and maintenance while maintaining clear identification. The dynamic nature ensures that only one opening group is accessible at a time, preventing confusion and incorrect operation.

Inventive Principle:
Principle #15Dynamics

3Productivity

If the roller is designed to rotate during operation, then soil cultivation function is achieved, but the openings are not consistently accessible for inspection and maintenance

Engineering Contradiction:
Improvesoil cultivation capabilityVSAvoidopening accessibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The roller rotates periodically during operation, and the opening groups are positioned to become accessible at specific periodic intervals. This periodic accessibility allows for inspection and maintenance while maintaining continuous soil cultivation function, as the openings can be accessed during designated rotational positions without compromising the overall productivity.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentEP4283042B1Soil compacting roller
Publication Date: 2024.07.03 HAMM AG
  • EP4283042B1 patent drawingFigure 1~2
  • EP4283042B1 patent drawingFigure 3
  • EP4283042B1 patent drawingFigure 4

AI summary

A soil cultivation roller comprises a roller shell (24) elongated in the direction of a roller axis of rotation and rotating about the roller axis of rotation during soil cultivation operation, a first fluid chamber in a roller interior (26) bounded by the roller shell (24), wherein, in association with the first fluid chamber, a first opening group (82) with a first filling opening (84), a first draining opening (86) and a first level control opening (88) is provided in an axial end region of the roller interior (26), a shielding element (102) arranged in the axial end region of the roller interior (26) and not rotating about the roller axis of rotation during soil cultivation operation, wherein a first release recess (104) is provided in the shielding element (102), and a second fluid chamber in the roller interior (26) bounded by the roller shell (24) which is substantially separated from the first fluid chamber to prevent fluid exchange.wherein, in association with the second fluid chamber in the axial end region of the roller interior (26), a second opening group (90) is provided with a second filling opening (92), a second draining opening (94) and a second level control opening (96).