Net Chain Lug Geometry for Stable Gear Meshing
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Solution Overview
Problem
Existing net chain conveying systems experience instability and reduced service life due to upward inclined forces on lugs during gear rotation, causing the conveying surface to jump and affect transmission efficiency.
Innovation Solution
A net chain driving structure with staggered lugs and arcuate faces connected by rotary shafts, featuring tangent planes for parallel gear contact, metal sheets to reduce stress, and inclined meshing grooves for smooth transmission, along with stainless steel construction for durability and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If transmission teeth of a gear contact with lugs at a vertex angle during rotation, then the gear can drive the chain link, but the lugs are subjected to upward inclined force causing the conveying surface to jump
Solution Approach 1:
The patent applies curvature by designing the contact surface between the gear transmission tooth and the lug as an arcuate face instead of a flat surface. This arcuate face is tangent to the transmission tooth surface, allowing for smooth rolling contact that eliminates the upward inclined force and prevents the conveying surface from jumping while maintaining effective power transmission.
2Productivity
If the gear drives the chain link directly, then transmission is achieved, but the chain link experiences high stress reducing service life
Solution Approach 1:
The patent introduces metal sheets as intermediary elements between the gear and the chain link. These metal sheets are connected to adjacent rotary shafts and work in conjunction with the gear to drive the chain link forward. This intermediary mechanism distributes and reduces the stress on the chain link during conveying, thereby extending its service life while maintaining conveying speed.
3Adaptability or versatility
If lugs are rotatably connected by rotary shafts, then the chain links can move flexibly, but the structure becomes complex
Solution Approach 1:
The patent merges the functions of the rotary shaft connection with the metal sheet mechanism. The metal sheets are connected to the rotary shafts in such a way that they work together as an integrated system to drive the chain link, eliminating the need for separate complex driving mechanisms and simplifying the overall structure while maintaining flexibility.
Data Source
AI summary
A net chain driving structure includes a conveying net chain. The conveying net chain includes a plurality of chain links successively inserted in a conveying direction, a plurality of lugs spaced apart from each other are arranged on two sides of the chain links, an end portion of the lug is an arcuate face, a meshing groove is disposed on the chain link, the meshing groove is spliced by an open slot provided on a back side of the chain link and the lugs on the adjacent chain links, a gear in transmission meshing with the meshing groove is disposed on each end of the conveying net chain, a tangent plane tangential to the arcuate face is disposed on the arcuate face of the lug, and transmission contact toothed surfaces of the tangent plane and the gear are attached to each other in parallel during meshing transmission.