Forestry Machine Cab Layout for 360-Degree Rotation

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Solution Overview

Problem

Forestry machines typically have limited 360-degree rotation of the cab and work implement due to engine interference, difficulty working off the front due to visibility and interference issues, high center of gravity on uneven terrain, and unnecessary complexity and weight from separate counterweights.

Innovation Solution

A forestry machine design with a 360-degree rotatable cab, integrated engine positioned below the chassis to reduce interference, a low center of gravity, and using the machine's structure as a counterweight to eliminate the need for a separate counterweight, allowing for improved visibility and operation on steep slopes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the engine is positioned in a conventional location, then the machine structure is simple, but the cab and work implement cannot rotate 360 degrees due to engine interference

Engineering Contradiction:

Improverotation range of cabVSAvoidengine positioning

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The engine is repositioned from a conventional horizontal arrangement to a vertical arrangement below the cab, utilizing the vertical dimension to resolve the spatial conflict between the engine and the rotating cab assembly, enabling full 360-degree rotation

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If a separate counterweight is added to lower the center of gravity, then stability on uneven terrain is improved, but the machine becomes more complicated and heavier

Engineering Contradiction:

Improvecenter of gravity positionVSAvoidcounterweight structure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The engine is integrated into the chassis structure and positioned low to serve dual purposes: providing power and acting as a counterweight to lower the center of gravity, eliminating the need for a separate counterweight component

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The engine serves multiple functions simultaneously: power generation, structural integration, and counterweight function for stability, reducing overall machine complexity and weight

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11785900B2Forestry machine

Publication Date: 2023.10.17 TIMBERPRO

AI summary

A forestry machine includes a ground propulsion apparatus, a chassis supported by the ground propulsion apparatus, a cab, an engine and a work implement. The chassis includes a front chassis portion and a rear chassis portion. The front chassis portion includes an upper portion and a lower portion. The rear chassis portion has a wood basket supported thereon. The cab is rotatably supported on the front chassis portion by a rotatable connection about a cab rotation axis to be selectively rotated 360 degrees. The engine is integrated into the front chassis portion. At least a part of the engine is disposed below an upper most surface of the upper portion. The work implement is movably attached to the cab. The work implement includes a boom movably attached to the cab, an arm movably attached to the boom, and a work tool attached to the arm.