Curved Snow Plough Clearing Bar Contour

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Solution Overview

Problem

Conventional clearing strips on snow plows experience significant snow turbulence due to protruding fastening means, which obstructs the driver's view by causing snow to swirl and clog the windshield, especially at high speeds.

Innovation Solution

The clearing strip features a curved contour with a tangent parallel to the fastening neck plane at the apex, creating a flow-favorable hump that shields the protruding fastening parts from snow, preventing turbulence and optimizing the snow flow by aligning the tangent at the apex to pierce the fastening neck plane, thus reducing snow swirl and flow resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional fastening means are used on a flat clearing strip, then the fastening function is achieved, but snow turbulence occurs and clogs the windshield

Engineering Contradiction:

Improvefastening functionVSAvoidsnow turbulence

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies curvature to the front surface of the clearing strip, creating an arched profile that guides snow flow over the protruding fastening means. This curved geometry prevents snow from swirling and clogging the windshield while maintaining the fastening function, directly resolving the contradiction between reliable fastening and snow turbulence prevention.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent converts the harmful effect of protruding fastening means (which cause snow turbulence) into a beneficial flow-guiding structure. The arch-shaped front surface utilizes the protruding elements not as obstacles but as flow directors, channeling snow smoothly over them and preventing windshield clogging while maintaining fastening reliability.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Ease of manufacture

If the clearing strip has a flat front surface, then manufacturing is simple, but snow flow resistance increases and turbulence occurs

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidsnow flow resistance

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The patent introduces a curved arch-shaped front surface to the clearing strip, which reduces snow flow resistance by guiding snow flow smoothly over the surface. This curvature, while adding some manufacturing complexity, significantly reduces energy loss from snow turbulence and flow resistance, achieving a balance between manufacturability and energy efficiency.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Reliability

If protruding fastening means are used, then secure fastening is achieved, but snow swirls and creates turbulence in the blade

Engineering Contradiction:

Improvefastening securityVSAvoidsnow swirl and turbulence

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful snow swirl effect caused by protruding fastening means into a beneficial flow-guiding mechanism. The arch-shaped front surface is designed to channel snow flow smoothly over the protruding elements, transforming them from turbulence generators into flow directors that prevent windshield clogging while maintaining fastening security.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The curved arch-shaped profile of the front surface guides snow flow around the protruding fastening means, preventing snow from swirling and creating turbulence. This geometric design allows the fastening means to protrude for secure attachment while the curved surface prevents harmful snow flow patterns.

Inventive Principle:

Principle #14Spheroidality (Curvature)

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 design minimizes snow drifts near the windshield, improves the sliding behavior of the blade, reduces clearance resistance, and decreases the power requirement for the clearing vehicle by ensuring a smooth snow flow past the fastening means, while maintaining effective wear distribution and reducing manufacturing costs.

Implementation Method 1

the curved contour of the front side of the clearing strip creates a flow-favorable hump in the area of the apex, in whose 'snow shadow' the protruding parts of the fastening means lie

Methodology Applied

Scientific EffectFlow guidance:

Implementation Method 2

This effectively prevents the snow from hitting these flow obstacles and thus effectively prevents the snow from swirling and hosing down

Methodology Applied

Scientific EffectTurbulence reduction: Turbulence

Data Source

PatentEP2021548B9Waved clearing bar

Publication Date: 2013.09.18 KUPER

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AI summary

The present invention lies in the field of clearing bars (3) for the clearing blade (1) of a snow plough, which clearing bars are defined at least partially in cross section by a curved contour (10). They are based on the object of avoiding undesirable swirling of snow within the clearing blade (1). The invention is based on the finding that the snow is swirled on parts (7) of the fastening means (5) for fastening the clearing bar (3) to the clearing blade (1). To solve this problem, a design of the contour (10) that is optimized dynamically in terms of flow is described.