Agricultural Work Tool Mounting with Resilient Sealing Rings
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Solution Overview
Problem
Existing agricultural machine work tool protection systems face issues with unstable and costly guidance, frequent wear, and changing working angles due to inadequate structural designs, leading to vibration and increased maintenance needs.
Innovation Solution
A device featuring a swinging mounting with resilient sealing rings and a compression spring between the load-bearing frame and work tool, utilizing anti-slip sealing rings and oil lubrication for stable guidance, and a compression spring for swing absorption, ensuring firm and accurate tool positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rubber elements are used to attach the work tool to the frame, then the tool can deflect under load, but precise and firm guidance of the tool cannot be achieved and the tool permanently vibrates
Solution Approach 1:
The mounting system is divided into separate functional components: a rigid bracket for structural support and positioning, and a resilient element (spring or rubber) for cushioning. This segmentation allows each component to perform its specific function optimally - the bracket provides stable guidance while the resilient element absorbs shocks.
Solution Approach 2:
A silent block or resilient element is introduced as an intermediary between the rigid bracket and the work tool. This intermediary component provides the necessary cushioning while maintaining stable guidance, resolving the contradiction between shock absorption and guidance stability.
2Stability of the object's composition
If a coiled spring with swivelling mounting is used, then the work tool is guided firmly, but the structure becomes more complicated and more expensive
Solution Approach 1:
The complex swivelling mounting mechanism is removed and replaced with a simpler rigid bracket connection. The essential cushioning function is extracted and performed by a simple resilient element, eliminating the need for complex mechanical joints while maintaining guidance stability.
Solution Approach 2:
Instead of using a rigid joint with added resilience (complex approach), the invention inverts the approach by using a rigid bracket for stability and adding a simple resilient element for cushioning. This simplifies the overall structure while achieving the same functional results.
3Adaptability or versatility
If a pinned joint is used for swivelling mounting, then the tool can rotate, but the joint is often prone to considerable abrasive wear
Solution Approach 1:
The resilient element (spring or rubber) is designed as a replaceable component that absorbs wear and degradation. Instead of protecting a complex pinned joint, the simple resilient element is easily replaced when worn, maintaining reliability at low cost.
Solution Approach 2:
The mechanical pinned joint system is replaced with a resilient element that provides rotation capability through elastic deformation rather than mechanical joint movement. This eliminates the abrasive wear associated with pinned joints while maintaining the necessary adaptability.
4Strength
If silentblocks with axial clearance are used for resilient mounting, then the tool can move resiliently, but the seating is unstable and the tool constantly moves
Solution Approach 1:
The resilient element is designed with specific local properties: it provides clearance and movement capability in the vertical direction for shock absorption, while maintaining rigid seating and stable positioning in horizontal directions. This directional differentiation resolves the contradiction between resilient mounting and seating stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides stable, accurate, and cost-effective guidance of the work tool with reduced wear and maintenance, extending the service life of components and maintaining consistent working angles.
Implementation Method 1
at least two resilient sealing rings in an anti-slip manner are arranged at the edges of the cavity
Implementation Method 2
there is an oil fill arranged between the sealing rings inside the cavity of the tube
Implementation Method 3
a compression spring for swing absorption
Data Source
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AI summary
A device to protect a work tool of an agricultural machine, especially a device to protect a work tool (1) of a soil cultivator against overload when hitting an obstacle, containing a swinging mounting (2) arranged in connection between the load-bearing frame (4) of the machine and the work tool (1), where the work tool (1) is attached to a tube (5) in the cavity (8) of which there is a shaft (7) fixed in the load-bearing frame (4) and, at the edges of the cavity (8), at least two resilient sealing rings (9) are arranged in an anti-slip manner, and between the rings (9), inside the cavity (8) of the tube (5), oil fill (10) is arranged.