Foldable carrying equipment
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Solution Overview
Problem
Existing foldable racks and trolleys face issues with insufficient support strength, especially when carrying heavy loads, leading to potential collapse and deformation of loading plates, and existing solutions like casters or additional support structures fail to provide stable support under uneven ground conditions.
Innovation Solution
A foldable carrying equipment with four legs, two platforms, a support linkage rod set, an outer stopper, and a first inner stopper, which ensures both sides of the loading plates are securely stopped and limited, preventing collapse and deformation by enhancing support at the intermediate portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If support linkage rod sets are arranged at both sides of loading plates, then support strength is improved, but device complexity and obstruction for placing objects increase
Solution Approach 1:
The patent removes one of the two support linkage rod sets from each platform, keeping only one set instead of two. This extraction reduces structural complexity and eliminates obstruction for placing objects while maintaining sufficient support strength through the remaining single support linkage rod set combined with stopper mechanisms.
2Stability of the object's composition
If support linkage rod sets are arranged at both sides of loading plates, then stability is improved, but ease of operation for placing objects deteriorates
Solution Approach 1:
The patent extracts one support linkage rod set from each platform, reducing the number of components that obstruct the placement of objects. The remaining single support linkage rod set combined with stopper mechanisms maintains platform stability while significantly improving ease of operation for placing objects of various sizes.
3Device complexity
If only one support linkage rod set is used per side, then device complexity is reduced, but support strength becomes insufficient leading to collapse
Solution Approach 1:
The patent introduces stopper mechanisms (outer stoppers and inner stoppers) as intermediary components that work together with the single support linkage rod set. These stoppers provide additional support and prevent collapse by limiting the movement and deformation of loading plates, compensating for the reduced number of support linkage rod sets.
Solution Approach 2:
The stopper mechanisms are designed to prevent collapse before it occurs by providing preliminary support and limiting the range of motion of loading plates. The outer stoppers and inner stoppers create preventive constraints that counteract potential deformation forces before they can cause structural failure.
4Strength
If stopper structures are added between adjacent loading plates, then support strength is improved, but device complexity increases
Solution Approach 1:
The patent merges the stopper functions into the existing support linkage rod set structure. The outer stoppers and inner stoppers are integrated with the support linkage mechanism rather than being completely separate components, reducing overall device complexity while maintaining enhanced support strength.
Data Source
AI summary
A kind of foldable carrying equipment is provided. The carrying equipment includes four legs, at least two platforms each of which having two adjacent loading plates and pivot plates, a support linkage rod set having a support rod pivotally connected to inner sides of the loading plates and operable for driving the loading plates to switch between folded and extended positions, an outer stopper arranged at outer sides of the loading plates or between the legs for supporting the outer sides, and a first inner stopper. The outer side of the loading plate is pivotally connected to the legs and one side of the inner side is pivotally connected to the pivot plate. The first inner stopper is disposed on the inner side of the loading plate and between the pivot plate and a pivot piece of the support rod for supporting the inner side of the loading plate.