Spliced Boom Frame Structure for Lightweight Mass Production
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Solution Overview
Problem
Existing boom structures for concrete pump trucks are either too heavy due to high-strength steel or costly and inefficient to produce with integral molding of lightweight materials, which complicates mold design and mass production.
Innovation Solution
A frame structure comprising top, bottom, and side plates with bending portions that are spliced and connected using various methods, allowing for a modular assembly that reduces mold costs and improves production efficiency while enhancing structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high-strength steel structures are used for booms, then structural strength is improved, but weight increases
Solution Approach 1:
The patent employs composite materials consisting of a lightweight boom body (made from materials like aluminum alloy or carbon fiber) combined with reinforcement ribs and加强 plates (made from high-strength steel or other strong materials). This composite structure allows the boom to achieve the required structural strength while maintaining lightweight characteristics, effectively resolving the contradiction between strength and weight.
2Weight of moving object
If integral molding is used for lightweight booms, then weight is reduced, but mold complexity and cost increase
Solution Approach 1:
The patent divides the boom structure into multiple separable components: the lightweight boom body, reinforcement ribs, and加强 plates. These segments can be manufactured independently using simpler molds and then assembled together. This segmentation approach reduces mold complexity and cost compared to integral molding, while still achieving the desired lightweight outcome.
Solution Approach 2:
The patent combines multiple functional elements (boom body, reinforcement ribs,加强 plates) into a unified composite structure through assembly. This merging of components allows each part to be manufactured separately with simpler molds, then assembled to form the complete lightweight boom structure, reducing overall mold complexity.
3Productivity
If integral molding is used for booms, then production efficiency is improved, but adaptability to structural optimization is reduced
Solution Approach 1:
The patent segments the boom into modular components (body, ribs, plates) that can be independently optimized and assembled. This modularity provides high adaptability to structural optimizations while maintaining efficient production through standardized assembly processes, resolving the contradiction between productivity and adaptability.
4Strength
If steel structures are used for booms, then structural strength is improved, but manufacturing cost increases
Solution Approach 1:
The patent uses composite materials where lightweight materials (aluminum alloy, carbon fiber) form the main boom body, reducing material cost compared to full steel construction. High-strength steel or other strong materials are used only for reinforcement ribs and plates where additional strength is needed, optimizing the balance between structural strength and manufacturing cost.
Solution Approach 2:
The patent applies high-strength materials locally only where structurally necessary (in reinforcement ribs and加强 plates) rather than throughout the entire boom structure. This localized application of expensive high-strength materials achieves the required structural strength while minimizing overall manufacturing cost.
Data Source
AI summary
The present disclosure provides a boom comprising a frame structure, wherein the boom comprises: a top plate; a bottom plate, wherein the bottom plate and the top plate are oppositely disposed at an interval; a first side plate; and a second side plate, wherein the second side plate and the first side plate are oppositely disposed at an interval, wherein a first side of the top plate is provided with a first bending portion, and at least a portion of the first bending portion and a first end of the first side plate are attached and spliced to each other, a second side of the top plate opposite to the first bending portion is provided with a second bending portion, at least a portion of the second bending portion and a first end of the second side plate are attached and spliced to each other, and a first side of the bottom plate is provided with a third bending portion, at least a portion of the third bending portion and a second end of the first side plate are attached and spliced to each other, a second side of the bottom plate opposite to the third bending portion is provided with a fourth bending portion, at least a portion of the fourth bending portion and a second end of the second side plate are attached and spliced to each other, and define the frame structure. The present disclosure makes the boom more suitable for mass production by splicing out the boom, and the change cost is low compared to the integrally formed mold.