Preloading Groove Support Board Resists Sagging
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Solution Overview
Problem
Conventional support boards for mechanical machines with a large length-width ratio tend to sag due to gravity, and reducing material to prevent deformation also reduces loading capacity, leading to worsened deformation under load.
Innovation Solution
A preloading and flex-resistant support board design featuring a support board body with preloading grooves and bars, where the preloading bar is disposed within the grooves, providing resisting surfaces that enhance the moment of inertia and rigidity, thereby preventing deformation and improving loading capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If the amount of material of the support board is decreased to prevent deformation, then weight is reduced, but loading capacity is reduced and deformation worsens under load
Solution Approach 1:
The support board is segmented into multiple sections with preloading grooves and bars, dividing the structure into functional units that work together to resist deformation while maintaining overall lightness
Solution Approach 2:
The support board combines the board body with preloading bars in a composite structure, where the bars fit into grooves to create a reinforced system that achieves both weight reduction and high loading capacity
2Adaptability or versatility
If the support board has a large length-width ratio to meet design requirements, then adaptability is improved, but flex resistance deteriorates due to sagging
Solution Approach 1:
The preloading bars add a vertical dimension to the resistance mechanism, creating moment of inertia in the thickness direction that counteracts sagging while allowing the board to maintain its large horizontal dimensions for design flexibility
Solution Approach 2:
The preloading bars are installed in advance to create preliminary resistance against gravitational sagging, preventing deformation before loads are applied while allowing the board to maintain its required large length-width ratio
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 preloading groove and bar arrangement effectively resists deformation, enhancing the support board's loading capacity while maintaining structural integrity by distributing stress through tensile and compressive forces, thus preventing sagging and improving overall mechanical performance.
Implementation Method 1
the preloading bar is disposed in the preloading groove of the support board body, and the preloading bar is provided with a resisting surface on each of two opposite ends thereof to resist against the resisting surfaces of the preloading groove. With the above arrangements, the present invention has the following advantages: The support board body is provided with the preloading bar in the preloading groove thereof, therefore, it can produce a moment of inertia which is strong enough to support the support board body from deformation
Data Source
AI summary
A preloading and flex resistant support board for a mechanical machine comprises a support board body and at least one preloading bar. The support board body is formed with at one preloading groove in the side subjected to the compressive stress. The preloading groove is provided with two resisting surfaces. The preloading bar is also provided with two resisting surfaces. The preloading bar is assembled in the preloading groove of the support board body by screw, so as to provide a balance between the preloading capacity produced by preloading bar to the support board body and the flexing stress produced by the support board body.