Wheel Housing Storage Layout for Forage Harvester Space Constraints

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Solution Overview

Problem

Existing agricultural machines, such as forage harvesters, face a challenge in providing additional storage space without increasing their overall size, particularly due to limited space availability and the adverse effects of external storage devices on machine dimensions.

Innovation Solution

Integrating a storage compartment within the wheel housing of the machine, utilizing the space around the ground engagement means, and relocating functional assemblies like the urea pump to this area, thereby freeing up space for a larger fuel tank.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a storage device is placed externally on the forage harvester, then storage space is provided, but the overall size of the machine increases

Engineering Contradiction:
Improvestorage spaceVSAvoidoverall size of machine
Core Design Contradiction:
Quantity of substanceVSLength of stationary object

Solution Approach 1:

The storage compartment is nested within the wheel housing structure, utilizing the space between the fender and the ground engagement means. This allows the storage function to be embedded within an existing structural component rather than adding an external addition, thus providing storage space without increasing the overall machine dimensions

Inventive Principle:
Principle #7Nested doll (Nesting)

2Quantity of substance

If a storage device is placed on the underside of the forage harvester, then storage space is provided, but ground clearance is reduced

Engineering Contradiction:
Improvestorage spaceVSAvoidground clearance
Core Design Contradiction:
Quantity of substanceVSLength of moving object

Solution Approach 1:

Instead of placing the storage device vertically on the underside (which would reduce ground clearance), the storage compartment is positioned in the radial dimension within the wheel housing, between the fender and the ground engagement means. This dimensional repositioning provides storage space without affecting the vertical ground clearance of the machine

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

3Volume of stationary object

If the urea pump is relocated to the wheel housing, then space in the machine is freed up for enlarging the fuel tank, but the functional assembly becomes more exposed

Engineering Contradiction:
Improvefuel tank spaceVSAvoidprotection of functional assembly
Core Design Contradiction:
Volume of stationary objectVSReliability

Solution Approach 1:

The urea pump is nested within the wheel housing structure, which provides both space optimization and protection. The housing encloses the functional assembly, offering mechanical protection while allowing easy access when needed, thus resolving the contradiction between protection and accessibility

Inventive Principle:
Principle #7Nested doll (Nesting)

4Strength

If existing structures are used for storage, then structural integrity is maintained, but available space for storage is limited

Engineering Contradiction:
Improvestructural integrityVSAvoidavailable storage space
Core Design Contradiction:
StrengthVSQuantity of substance

Solution Approach 1:

The wheel housing structure is utilized with its inherent structural integrity, and the storage compartment is created by defining a specific local space within this existing structure. The mounting plate provides localized structural support for the storage compartment, maintaining overall structural integrity while creating new storage capacity within the existing framework

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4454454B1Agricultural machine
Publication Date: 2026.04.08 CLAAS SELBSTFAHRENDE ERNTEMASCHINEN GMBH
  • EP4454454B1 patent drawingFigure 1
  • EP4454454B1 patent drawingFigure 2
  • EP4454454B1 patent drawingFigure 3

AI summary

The invention relates to an agricultural machine (12), in particular a forage harvester (1), comprising an axle body (14) with at least one ground engagement means (15) arranged on the axle body (14), further comprising a wheel housing (17) which includes a mudguard (18) radially surrounding the ground engagement means (15) on the outside in sections and a side wall (19), wherein a storage space (20) with a functional assembly (21) located therein is arranged on the side wall (19).