Chipper Rotor Disc With Transverse Sliding Cutting-Length Adjustment
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Solution Overview
Problem
Existing chipping rotors lack a simple and stable mechanism for adjusting the cutting length, limiting their versatility and adaptability to different wood chip production requirements.
Innovation Solution
A rotor disc with a movable displacement unit that allows for precise adjustment of the cutting length by moving transversely or perpendicularly to the radial direction, featuring a sliding unit with a support surface and a sliding mechanism for stable and low-friction movement, and hydraulic actuators for controlled displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sliding unit is introduced to adjust cutting length, then adaptability is improved, but stability deteriorates
Solution Approach 1:
A sliding surface is introduced as an intermediary element between the rotor disc and the displacement unit. The sliding surface provides a stable, low-friction interface that allows the displacement unit to move smoothly while maintaining stable contact with the rotor disc structure.
Solution Approach 2:
The patent replaces complex mechanical adjustment mechanisms with a simpler sliding unit that moves along a predefined sliding surface. This substitution reduces mechanical complexity while improving both adjustability and stability.
2Manufacturing precision
If the sliding unit moves transversely to radial direction, then cutting length precision is improved, but device complexity increases
Solution Approach 1:
The adjustment mechanism is segmented into distinct functional components: the sliding unit for positioning, the sliding surface for guidance, and the displacement unit for actuation. This segmentation allows each component to perform its specific function efficiently while keeping the overall design manageable.
Solution Approach 2:
The patent introduces transverse movement perpendicular to the radial direction to achieve precise cutting length adjustment. This dimensional change allows for accurate positioning without requiring complex radial adjustment mechanisms.
3Reliability
If support surface and sliding surface are designed to correspond, then wear is reduced, but manufacturing complexity increases
Solution Approach 1:
The sliding surface and support surface are designed with specific local geometric characteristics that correspond to each other. This local quality matching ensures proper contact and load distribution at the critical interface, reducing wear while maintaining manufacturability through standardized surface profiles.
Data Source
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AI summary
The invention relates to a rotor disc (1), in particular a chipping rotor disc, for a chipping rotor (13), in particular a wood chipping rotor, for chipping wood to produce wood chips, with at least one movable displacement unit (4) by means of which a cutting length can be set. The at least one displacement unit (4) is displaceable in a displacement direction (8) that is oriented transversely, in particular perpendicularly, to a radial direction (7) of the rotor disc (1).