Land Preparation Tool Mounting Interface for Vibration Resistance
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Solution Overview
Problem
Existing land preparation tools face challenges in securely attaching cutting, grinding, and mulching tools to vehicles, leading to potential loosening during vibration and shock loading, and requiring precise manufacturing tolerances.
Innovation Solution
The use of non-planar profiles on tool holders and land preparation tools with inverse mounting surfaces, combined with intermediate connectors, provides a secure interference fit and reduces the risk of loosening, allowing for manufacturing flexibility and improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional flat mounting surfaces are used to attach land preparation tools, then manufacturing is simpler, but the tools loosen during vibration and shock loading
Solution Approach 1:
The patent applies curvature by replacing flat mounting surfaces with non-planar, convex surfaces on tool holders that mate with corresponding concave surfaces on tools. This curved interface creates an interference fit that resists loosening during vibration and shock loading, resolving the contradiction between reliability and manufacturing precision by allowing broader tolerances while maintaining secure attachment.
Solution Approach 2:
The patent employs asymmetric mounting surfaces where the convex profile on the tool holder does not mirror the concave profile on the tool. This asymmetric design creates a unique interference fit pattern that enhances security against loosening while simplifying manufacturing, as the asymmetric shapes are easier to produce with standard tolerances compared to precision flat surfaces.
2Reliability
If precise manufacturing tolerances are enforced on mounting surfaces, then tool attachment security improves, but manufacturing costs increase
Solution Approach 1:
By using curved, non-planar mounting surfaces, the patent enables secure tool attachment without requiring tight manufacturing tolerances. The interference fit created by the convex-concave profile design provides inherent security against loosening, allowing manufacturers to use broader tolerances and reduce manufacturing costs while maintaining reliability.
Solution Approach 2:
The patent changes the geometric parameters of the mounting surface from flat to non-planar with specific convex and concave profiles. This parameter change transforms the attachment mechanism from one requiring precision flatness to one that achieves security through interference fit, thereby reducing manufacturing complexity and cost while improving reliability.
3Reliability
If secure attachment is achieved through interference fit, then vibration-induced loosening is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent uses curved convex and concave profiles to create the interference fit, which reduces vibration-induced loosening. While this introduces some complexity to the mounting interface, the curved surfaces are simpler to manufacture than precision flat surfaces with locating features, and the overall assembly is simplified by eliminating the need for separate fastening mechanisms.
Solution Approach 2:
The patent merges the functions of attachment and alignment into a single interference fit interface. The convex-concave profile simultaneously provides secure attachment and proper alignment of the tool with the tool holder, eliminating the need for separate alignment features and fastening mechanisms, thereby reducing overall device complexity.
Data Source
AI summary
A land preparation tool includes a cutting surface having a blade and a mounting interface opposite the cutting surface. The mounting interface of the land preparation tool is configured to detachably connect to a tool holder having a top surface, an end surface, a mounting surface opposite the end surface, and opposing first and second side surfaces extending between the end surface and the mounting surface. The mounting surface has an apex extending downwardly from the top surface and first and second mounting faces. The first mounting face extends inwardly from the first side surface toward the apex and the second mounting face extends inwardly from the second side surface toward the apex.