Tree Felling Head Scraping Assembly for Slope Excavation

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Solution Overview

Problem

Tree felling heads used for excavation and carrier displacement on sloping grounds tend to suffer damage due to their limited ability to perform excavation and clearing operations effectively.

Innovation Solution

A tree felling head with an integrated excavating assembly featuring a scraping portion that extends outwardly from the peripheral border of the bottom saw housing, allowing for enhanced excavation and protection of the felling head during operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a tilting felling head is used for excavation and clearing operations, then the productivity and versatility are improved, but the reliability and durability deteriorate due to damage to the felling head

Engineering Contradiction:

Improveexcavation and clearing operation capabilityVSAvoidfelling head durability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The felling head is divided into functional modules: a bottom saw housing for cutting operations and a separate excavating assembly with scraping portions for excavation operations. This segmentation allows each module to be optimized for its specific function while protecting the main felling head structure from damage during excavation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The scraping portions act as intermediary elements that contact the ground during excavation operations, shielding the bottom saw housing and main felling head structure from direct ground contact and potential damage. The scraping portions wear instead of the critical felling head components.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the felling head is used for slope escalation operations, then the ease of operation is improved, but the reliability deteriorates due to damage to the felling head

Engineering Contradiction:

Improveslope displacement capabilityVSAvoidfelling head durability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The scraping portions are positioned to extend outwardly from the bottom saw housing before ground contact occurs during slope escalation operations. This preliminary positioning ensures that the scraping portions make initial contact with the ground, protecting the felling head structure from damage during the escalation process.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If the scraping portion extends outwardly from the peripheral border, then the excavation effectiveness is improved, but the device complexity increases

Engineering Contradiction:

Improveexcavation effectivenessVSAvoidfelling head structure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The bottom saw housing serves multiple functions: it houses the bottom saw for cutting operations and provides mounting structure for the excavating assembly with scraping portions. This multi-functionality reduces overall device complexity by combining structural elements rather than adding separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The excavating assembly is integrated with the bottom saw housing structure, combining the cutting and excavation functions into a single unified assembly. The scraping portions are mounted directly to the housing, merging the support structure with both functional elements.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11766003B2Excavating assembly and tree felling head including same

Publication Date: 2023.09.26 CAPITAL DINVESTISSEMENT CARRIER INC

AI summary

The present disclosure concerns a tree felling head for mounting to a tree-cutting carrier, the tree felling head comprising a bottom saw housing defining a saw-receiving cavity and comprising a peripheral border at least partially bordering the saw-receiving cavity; and an excavating assembly comprising a scraping portion extending outwardly past the peripheral border at least along a section thereof. It also concerns such an excavating assembly.