Net Chain Drive Structure With Arcuate Lug Meshing Stability
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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, featuring tangent planes parallel to gear contact surfaces and inclined meshing groove side walls, along with metal sheets connected to rotary shafts to distribute stress and maintain flatness, and stainless steel metal sheets for enhanced durability.
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 lugs are subjected to upward inclined force, but this causes the conveying surface to jump and affects conveying effect and service life
Solution Approach 1:
The patent applies curvature by designing the contact surface between the gear transmission teeth and the lugs as an arcuate face instead of a flat surface. This curved geometry ensures that the contact point moves smoothly along the arc during rotation, eliminating the upward inclined force that causes jumping. The arcuate contact surface distributes the transmission force more evenly, maintaining conveying stability while preserving power transmission efficiency.
Solution Approach 2:
The patent changes the geometric parameters of the contact interface by introducing a specific arc radius and contact angle range. By controlling the curvature radius of the arcuate face and limiting the contact angle to within 30 degrees of the vertical direction, the system transforms the force distribution characteristics, eliminating harmful upward forces while maintaining effective power transmission.
2Adaptability or versatility
If lugs are rotatably connected by rotary shafts to enable flexible conveying, then the chain links can adapt to different positions, but the contact between gear teeth and lugs causes jumping and reduces service life
Solution Approach 1:
The arcuate contact surface is integrated into the rotary shaft-lug connection system, allowing the lugs to rotate adaptively while maintaining smooth arc-based contact with the gear teeth. This curved contact geometry prevents impact and jumping during rotation, reducing wear on the rotary shafts and extending the service life of the flexible conveying system.
3Ease of operation
If the meshing groove is spliced by an open slot and adjacent lugs to enable gear meshing, then transmission is achieved, but line contact at vertex angles causes upward force and jumping
Solution Approach 1:
The meshing groove is designed with an arcuate contact surface that replaces the traditional line contact geometry. This curved surface allows the gear teeth to contact the lugs along an arc path rather than at a single vertex point, eliminating the upward inclined force while maintaining smooth meshing operation and conveying stability.
4Productivity
If chain links are connected in sequence to form a conveying net chain, then continuous conveying is achieved, but the cumulative effect of upward forces on multiple lugs causes surface jumping and reduces overall system reliability
Solution Approach 1:
The arcuate contact surface is applied to all lugs throughout the continuous net chain, ensuring that every contact point between gear teeth and lugs follows a smooth curved path. This eliminates upward forces at all contact points along the conveying line, preventing cumulative jumping effects and maintaining stable continuous conveying operation.
Data Source
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AI summary
The present invention relates to the technical field of conveying devices, and discloses a net chain driving structure. The 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 that are 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 on one side of the conveying direction, a gear in transmission meshing with the meshing groove is disposed on each of two ends of the conveying net chain, a tangent plane tangential to the arcuate face is disposed on the arcuate face of the lug, and a transmission contact toothed surface of the tangent plane and the gear are attached to each other in parallel during meshing transmission. By means of the present invention, tangent planes are disposed on the lugs of the chain links, and the transmission contact toothed surfaces of the tangent planes and the gears are attached to each other in parallel during meshing transmission. A change in the tangent planes and the gears is merely a change in a size of a contact area, which does not result in fluctuation of a conveying face of the conveying net chain. In this way, a conveying effect is effectively improved and a service life of the net chain is prolonged.