Boom Assembly Central Connection Plate Reinforcement
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Solution Overview
Problem
Conventional boom assemblies for front loaders require thick side plates to reinforce the area around the pivoting support for working tool cylinders, increasing costs and weight while compromising the vehicle's appearance.
Innovation Solution
The boom assembly incorporates a bow-shaped design with a central connection plate featuring a connection plate projection that overlaps the pivoting support, allowing for thinner side plates and improved strength without bulkiness, thus reducing costs and weight while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of side plates is increased to reinforce the area around the pivoting support, then strength is improved, but cost and weight increase
Solution Approach 1:
The patent applies local quality by adding a reinforcement plate only in the specific area around the pivoting support where stress is concentrated, rather than increasing the thickness of the entire side plate. This localized reinforcement maintains strength where needed while keeping other areas lightweight.
Solution Approach 2:
The side plate is segmented into different thickness zones: a thicker reinforcement plate section at the pivoting support area and a thinner main body section. This segmentation allows the structure to have high strength where required while minimizing overall weight.
2Strength
If the thickness of side plates is increased to reinforce the area around the pivoting support, then strength is improved, but external appearance deteriorates
Solution Approach 1:
The reinforcement plate is positioned at the rear portion of the side plate where it is less visible from the front view. This local placement maintains strength while minimizing impact on the overall external appearance of the boom assembly.
3Strength
If the thickness of side plates is increased to ensure strength, then reliability is improved, but cost increases
Solution Approach 1:
The side plate structure is segmented into a thin main body and a localized reinforcement plate. This segmentation reduces the total amount of material required compared to a uniformly thick side plate, thereby lowering manufacturing cost while maintaining necessary strength.
Solution Approach 2:
Material is concentrated only where structurally necessary (at the pivoting support area) rather than distributed uniformly throughout the side plate. This local quality approach optimizes material usage and reduces overall cost.
Data Source
AI summary
A boom has a central connection plate attached between a pair of side plates, and a rear portion side of a cover plate on a front boom portion and a front portion side of a cover plate on a rear boom portion are connected thereby. A pivoting support for a working tool cylinder used to move a working tool connected to a foremost portion of the front boom portion is provided on a front side of a top portion on each of the left and right side plates. The central connection plate is formed with a connection plate projection projecting from a front portion attached to the rear portion of the cover plate toward a midway portion so as to approach the pivoting support.