Resin Trough Grating Lid Structure for Heavy-Vehicle Load Bearing
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Solution Overview
Problem
Existing trough structures face challenges in achieving high load-bearing capacity while using resin-made trough lids, especially when subjected to heavy vehicles, as they require excessive thickness and complex stress dispersion, leading to increased costs and altered construction methods.
Innovation Solution
A structure for attaching a grating lid onto a resin-made trough body, featuring a U-shaped cross section with vertical and horizontal ribs for reinforcement, and L-shape members that accommodate the grating lid, allowing for improved load distribution and secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a resin-made trough lid is used to maintain lightweight handling performance, then ease of operation is improved, but load-bearing capacity deteriorates when subjected to heavy vehicles
Solution Approach 1:
The invention combines resin material with metal reinforcement ribs to create a composite structure. The resin trough lid maintains its lightweight and easy-to-handle properties, while the embedded metal ribs (made of high-strength steel) provide the necessary load-bearing capacity to withstand heavy vehicle loads. This composite approach resolves the contradiction between lightweight handling and high strength requirements.
2Strength
If the thickness of the resin-made trough lid is increased to improve load-bearing capacity, then strength is improved, but device complexity and construction costs worsen
Solution Approach 1:
Instead of uniformly increasing the thickness of the entire trough lid, the invention segments the reinforcement function into discrete metal ribs embedded within the resin material. These ribs are strategically positioned at high-stress areas (bottom surface and side surfaces) to provide targeted reinforcement. This segmentation approach maintains structural simplicity while achieving the required load-bearing capacity, avoiding the complexity and cost associated with uniformly thickening the entire lid.
3Strength
If a lattice-shaped metal molded grating lid is used to improve load-bearing capacity, then strength is improved, but weight increases deteriorating handling performance
Solution Approach 1:
The invention applies local quality by concentrating metal reinforcement only where structurally necessary - specifically in the form of ribs at the bottom and side surfaces of the resin trough lid. Rather than using a fully metal lattice structure throughout, the metal reinforcement is locally applied to provide maximum strength with minimum weight. This allows the lid to achieve high load-bearing capacity while maintaining lightweight handling performance through the predominant resin material.
Data Source
AI summary
This resin trough body has an approximately U-shape cross-sectional shape that includes a bottom section and side sections on the two sides. Vertical reinforcement ribs are formed at a prescribed interval on the outer surface of both side sections of a trough body of a prescribed length. Further, near the front and back ends of the trough body, horizontal ribs are formed so as to link two vertical ribs. An accommodation space for accommodating a grating lid is formed by a pair of L-shape members being fixed with bolts to a fixing jig that has been attached to the horizontal ribs. The grating lid is accommodated in said accommodation space, and the grating lid is fixed to a bolt fixing section, which is a mounting hole formed in the horizontal plane of the L-shape members.