Chassis Longitudinal Beam Step for Engine Access

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Solution Overview

Problem

Conventional road construction machine chassis designs make it difficult to access the engine compartment for repair and maintenance, and the paneling structures take up excessive space, hindering compactness and accessibility.

Innovation Solution

A chassis design featuring a longitudinal beam with a step that divides it into an outer and inner section, allowing for easy attachment of paneling elements without additional fastening devices, enhancing accessibility and reducing the need for heavy fastening devices, while incorporating a panel door with ventilation openings for improved cooling and maintenance access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If continuous longitudinal beams are used to provide structural stability, then the chassis stability is improved, but the accessibility to the engine compartment deteriorates

Engineering Contradiction:

Improvechassis stabilityVSAvoidaccessibility to engine compartment

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The longitudinal beam is segmented into two distinct sections: an outer longitudinal beam section and an inner longitudinal beam section. This segmentation creates a step structure that divides the beam's function - the outer section maintains structural stability while the inner section provides access to the engine compartment, thus resolving the contradiction between stability and accessibility.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If cladding structures are attached externally to continuous longitudinal beams, then the chassis structure is simplified, but the overall size of the machine increases

Engineering Contradiction:

Improvechassis structureVSAvoidoverall size of machine

Core Design Contradiction:

Device complexityVSVolume of moving object

Solution Approach 1:

The cladding structure is nested within the step formed by the inner longitudinal beam section rather than being attached externally. This nesting approach allows the cladding to be integrated into the chassis structure without increasing the overall external dimensions of the machine, while still providing the necessary structural support and simplified construction.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Strength

If heavy fastening devices are used to attach paneling structures, then the attachment strength is improved, but the weight and space requirements increase

Engineering Contradiction:

Improveattachment strengthVSAvoidweight of fastening devices

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The fastening function is merged with the structural beam itself. The inner longitudinal beam section is integrated into the outer longitudinal beam section to form a unified step structure that provides both structural support and attachment capability. This eliminates the need for separate heavy fastening devices, as the beam structure itself serves as the attachment mechanism.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP2650194B2Chassis for a road construction machine

Publication Date: 2023.03.01 JOSEPH VOEGELE AG

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AI summary

The present invention relates to a chassis (1) for a road construction machine (2), comprising at least one first longitudinal beam (3) which extends at least sectionally laterally along an engine compartment (7) of the road construction machine (2), wherein the longitudinal beam (3) has a step (6) which divides the longitudinal beam (3) into an outer longitudinal beam section (4) and an inner longitudinal beam section (5), wherein the inner longitudinal beam section (5) forms a receiving area (9) through the step (6) in which a first cladding element (11) can be received.