Forestry Winch Eject Roller Protective Cover

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Solution Overview

Problem

Forestry winches face reliability issues due to outdoor energy supply lines being damaged by branches and twigs, which compromises the functionality and safety of the equipment.

Innovation Solution

A protective device, such as a helmet-like metal cover, is integrated onto the ejector roller to safeguard energy supply lines and a pressing device, ensuring they are shielded from mechanical damage, and the energy supply lines are routed within a hollow shaft bearing journal to prevent fraying and further protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If energy supply lines are laid outdoors on the ejector roller, then the forestry winch can operate in the forest environment, but the energy supply lines can be damaged by branches, twigs or other interfering edges

Engineering Contradiction:
Improveoperability in forest environmentVSAvoidintegrity of energy supply lines
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

A protective cover made of flexible or rigid material is introduced to enclose the energy supply lines on the ejector roller. This shell-like structure shields the lines from mechanical damage by branches and twigs while allowing the forestry winch to operate in the forest environment without compromising reliability.

Inventive Principle:
Principle #30Flexible shells and thin films

2Device complexity

If the additional drive motor is located directly on the ejector roller, then compact design is achieved, but the energy supply lines are exposed to mechanical damage

Engineering Contradiction:
Improvecompactness of motor arrangementVSAvoidmechanical damage to energy supply lines
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The protective cover encloses both the additional drive motor and the energy supply lines, maintaining the compact arrangement while shielding vulnerable components from mechanical damage in the forest operating environment.

Inventive Principle:
Principle #30Flexible shells and thin films

3Ease of manufacture

If energy supply lines are routed outdoors for ease of connection, then installation is simplified, but the lines are vulnerable to being torn by branches and twigs

Engineering Contradiction:
Improveease of installationVSAvoidprotection from mechanical damage
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The protective cover provides continuous shielding along the routed energy supply lines, allowing them to be connected and routed relatively easily while being protected from mechanical damage throughout their length on the ejector roller.

Inventive Principle:
Principle #30Flexible shells and thin films

Data Source

PatentUS20230373764A1Forestry Winch with an Eject Roller
Publication Date: 2023.11.23 WELSCHOF BERNWARD
  • US20230373764A1 patent drawing
  • US20230373764A1 patent drawing
  • US20230373764A1 patent drawing

AI summary

A forestry winch that has a rope drum driven by a drive motor and an ejector roller driven by an additional drive motor is disclosed. A rope is guided from the rope drum to the ejector roller and is guided over the ejector roller. The additional drive motor is located on the ejector roller and is connected to an energy supply device by means of energy supply lines. Provided on the ejector roller a protective device, which covers the energy supply lines located in the area of the additional drive motor and protects them from mechanical damage.