Trestle Assembly with Glued Crosspieces and Angle Panels for Stability
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Solution Overview
Problem
Trestles face challenges with stability and ergonomics, particularly in supporting heavy loads and securely holding elements undergoing operations like cutting or coating, where instability can lead to operational issues and damage.
Innovation Solution
A collapsible trestle design featuring a base with parallel uprights secured by upper and lower crosspieces, beveled uprights for increased stability, and removable weights for enhanced stability, along with modular accessories for secure positioning of elements, including a support surface integral with one pair of uprights and additional accessories like non-slip coatings or magnetic studs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional trestles use simple crosspiece connections, then ease of manufacture is improved, but stability and load-bearing capacity deteriorate
Solution Approach 1:
The patent combines wood (uprights and crosspieces) with metal components (angle assemblies and wing nuts) to create a composite structure. The angle assemblies serve as reinforced connection nodes that significantly improve stability and load-bearing capacity while maintaining relative ease of manufacture through standardized metal components and simple assembly procedures.
2Ease of operation
If trestles are designed to be portable and foldable, then ease of operation is improved, but stability under load deteriorates
Solution Approach 1:
The trestle employs dynamic connection mechanisms including angle assemblies with slots that allow adjustable positioning, and wing nuts that enable easy tightening and loosening. These dynamic features allow the structure to be quickly assembled and disassembled for portability, while also providing secure, stable connections when deployed and loaded.
3Reliability
If trestles use secure connection methods like angle assemblies, then stability is improved, but device complexity increases
Solution Approach 1:
The connection system is segmented into modular components: angle assemblies as structural nodes, crosspieces as connecting elements, and wing nuts as fastening mechanisms. This segmentation allows each component to be optimized independently and assembled in a straightforward sequence, reducing overall complexity despite the enhanced stability provided by the angle assemblies.
4Manufacturing precision
If support surface is integral with base, then manufacturing precision is improved, but adaptability to different configurations deteriorates
Solution Approach 1:
The angle assemblies serve multiple functions: they provide structural reinforcement at critical corners, enable secure connections between uprights and crosspieces, allow for adjustable positioning through slot mechanisms, and facilitate easy disassembly. This multi-functionality compensates for the reduced adaptability of the integral support surface.
Data Source
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AI summary
A trestle (1) comprising: - an underframe intended to rest on the ground, consisting of two pairs of uprights (11) parallel to each other, the two uprights (11) of each of the pairs being rigidly attached to each other at least by an upper crossmember (4), said pairs being rigidly attached to each other at at least one upper joint (10), and - a support surface (3) arranged above the underframe and rigidly attached to said underframe, and extending perpendicular to a vertical direction when the trestle is in the operational position. The upper crossmembers (4) extend between mutually parallel uprights (11) of each of the two pairs and are rigidly attached to these by gluing. Lateral or corner-piece assembly panels (7) are attached, at least at the upper corners defined by the uprights (11) and the associated upper crossmember (4) of each of the two pairs of uprights, and on either side of said upper corners. The upper end of each of the uprights (11) is bevelled, such that, in the operational position, the support surface (3) rests on the entirety of the upper transverse cross-section of said uprights. The support surface (3) is only rigidly attached to one of the two pairs of lateral uprights (11).