Vehicle Wheel Cleaning Device with Planetary Gear Turntables

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Solution Overview

Problem

Existing wheel cleaning devices have limited movement and coverage, restricting their effectiveness in cleaning vehicle wheels.

Innovation Solution

A rotary device with a central axis-driven rim washing brush and internal turntables, allowing for rotation around both the central axis and own axis via a gear mechanism, along with a high-pressure cleaning fluid supply system, enhances surface coverage and cleaning efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single rotary brush is used for wheel cleaning, then the device structure is simple, but the cleaning coverage and effectiveness are limited

Engineering Contradiction:
Improvedevice structureVSAvoidcleaning coverage
Core Design Contradiction:
Device complexityVSArea of stationary object

Solution Approach 1:

The single rotary brush is segmented into multiple independent rotary brushes (at least three) arranged radially around the central axis. Each brush can be independently driven by the drive motor through transmission mechanisms, allowing them to rotate at different speeds and directions. This segmentation increases the cleaning coverage area while maintaining manageable device complexity through modular design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple rotary brushes are nested within a common housing structure, with each brush positioned at different radial distances from the central axis. The brushes are arranged in a nested configuration where inner brushes operate closer to the wheel center and outer brushes cover the rim area, maximizing cleaning coverage within a compact device footprint.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of stationary object

If multiple rotary brushes are added to increase cleaning coverage, then the cleaning effectiveness is improved, but the device complexity increases

Engineering Contradiction:
Improvecleaning coverageVSAvoiddevice structure
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The drive motor serves multiple functions by simultaneously driving all rotary brushes through a shared transmission system. The housing structure performs multiple roles: supporting the drive motor, mounting the transmission mechanisms, providing bearings for rotary brush rotation, and directing cleaning fluid flow. This multi-functionality reduces the number of separate components needed, thereby limiting the increase in device complexity.

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

Solution Approach 2:

The drive motor and transmission system are merged into a single integrated power transmission unit that drives all rotary brushes. The housing combines structural support, bearing mounting, and fluid distribution functions into one component. This merging of functions and components achieves multiple cleaning brushes with enhanced coverage while controlling overall device complexity through integration.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If all rotary brushes rotate at the same speed, then the device operation is simple, but the cleaning effect on different wheel surfaces is suboptimal

Engineering Contradiction:
Improveoperation simplicityVSAvoidcleaning effect
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

Different rotary brushes are assigned different rotational speeds tailored to their specific cleaning tasks. Inner brushes rotate at speeds optimized for cleaning the wheel center and hub area, while outer brushes rotate at different speeds suited for the rim and tire sidewall. This local optimization of rotational speed ensures effective cleaning across diverse wheel surfaces while maintaining independent control of each brush.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The transmission system incorporates variable speed mechanisms that allow each rotary brush to operate at dynamically adjustable speeds. This enables the system to adapt rotational speeds to different wheel sizes, contamination levels, and surface types, improving cleaning reliability while maintaining operational flexibility through independent speed control of each brush.

Inventive Principle:
Principle #15Dynamics

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

The device achieves improved cleaning coverage and effectiveness by allowing inner and outer brushes to rotate at different speeds, ensuring thorough cleaning of vehicle wheels with a compact design and efficient fluid distribution.

Implementation Method 1

The drive shaft (21) is mechanically coupled to the rotary body (3) in such a way that rotation of the drive shaft (21) results in rotation of the rotary body (3) about the central axis (2)

Methodology Applied
Scientific EffectMechanical coupling: Gear

Implementation Method 2

Each turntable (8) is rotatable about its own longitudinal axis (9) when the rotary body (3) is rotated, as a result of a planetary gear mechanism (25, 26)

Methodology Applied
Scientific EffectPlanetary gear mechanism: Epicyclic Gearing

Implementation Method 3

a device for supplying a cleaning fluid is integrated into the rotary body. This device can include supply lines and a rotary feedthrough for the transfer of the cleaning fluid, which is expediently supplied under high pressure, from a stationary part into the rotating rotary body

Methodology Applied
Scientific EffectHigh-pressure fluid supply: Pressure Increase

Data Source

PatentEP2287053B2Device for cleaning vehicle wheels
Publication Date: 2022.12.28 WASHTEC HLDG
  • EP2287053B2 patent drawingFigure 1
  • EP2287053B2 patent drawingFigure 2
  • EP2287053B2 patent drawingFigure 3~4

AI summary

The invention relates to a device for cleaning vehicle wheels, comprising a rotating body (3) rotatable about a central axis (2) and driven by a drive motor (1), with cleaning elements (10) arranged at its end faces. Improved cleaning can be achieved by the rotating body (3) including at least one rotary plate (8) equipped with further cleaning elements (11), which, through the rotation of the rotating body (3), is rotated not only about the central axis (2) but also, via a transmission (25, 26), about its own longitudinal axis (9).