Sprayer Boom Truss Structure for Low-Stress Folding Joints
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Solution Overview
Problem
Conventional spray implement designs for agricultural work vehicles face challenges in maintaining structural integrity and efficiency during folding and unfolding processes, particularly due to the limitations of traditional hinge assemblies and actuation systems, which can lead to mechanical stress and potential damage.
Innovation Solution
A truss structure for spray boom assemblies featuring a top member, bottom member, and truss members connected by laser-welded lap joints with filler material, providing a strong and lightweight configuration that reduces stress concentrations and enhances the structural integrity of boom segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional hinge assemblies and actuation systems are used for folding spray boom assemblies, then the spray implement can transition between deployed and stowed positions, but mechanical stress and potential damage occur during folding and unfolding processes
Solution Approach 1:
The spray boom assembly is divided into multiple segments that can fold relative to each other. Each segment is connected through truss structures with connecting members, allowing the boom to be segmented into collapsible units that reduce mechanical stress during folding operations while maintaining the ability to transition between deployed and stowed positions
Solution Approach 2:
The truss structure combines different materials and connection methods (welded joints, connecting members) to create a composite structure that distributes mechanical stress during folding. The combination of truss members, connecting members, and welded joints creates a resilient structure that maintains reliability during folding operations
2Strength
If conventional welding methods are used to connect truss members, then structural strength is achieved, but stress concentrations occur at connection points
Solution Approach 1:
The connection design extends beyond simple point welding by incorporating connecting members that distribute loads across multiple dimensions. The truss structure uses multi-point connections and distributed welding patterns that spread stress across the entire connecting area rather than concentrating it at single points, reducing stress concentrations while maintaining structural strength
3Volume of moving object
If foldable designs with multiple hinge assemblies are used, then the spray implement can be compacted for transportation, but device complexity increases
Solution Approach 1:
The truss structure with connecting members serves multiple functions: it provides structural support during deployment, enables controlled folding during stowing, and distributes mechanical stresses during transitions. This multi-functional design reduces the need for separate specialized components, thereby reducing overall device complexity while achieving compact stowed dimensions
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
The truss structure enhances the structural integrity and durability of spray boom assemblies, allowing for efficient folding and unfolding while minimizing mechanical stress, thus improving the operational reliability and longevity of the spray system.
Implementation Method 1
The second connecting plate is welded to the bottom member by a laser welded lap joint
Data Source
AI summary
A truss structure of a spray boom assembly includes a top member, a bottom member, and a first truss member positioned between the top member and the bottom. The truss structure also includes a first connecting member welded to the top member and the first truss member, and a second connecting plate welded to the bottom member and the first truss member.