Spiral Conveying Mesh Chain Inward Force Deviation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing spiral conveying mesh chains tend to detach from the rotary drum due to outward deviation of the force direction between passive and driving teeth, preventing rotation when the tightening force is small.

Innovation Solution

The spiral conveying mesh chain features passive teeth with contact surfaces such as inclined, arc-shaped, V-shaped, or T-shaped surfaces that deviate the force direction inwardly relative to the rotation direction, ensuring engagement with driving teeth on the rotary drum even at low tightening forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the contact surface between passive tooth and driving tooth is a square surface, then the structure is simple, but the force direction deviates outwardly causing detachment

Engineering Contradiction:

Improvestructural simplicityVSAvoidengagement reliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent applies asymmetry by changing the contact surface from a symmetric square shape to an asymmetric inclined surface. The inclined surface is designed with a specific angle (15°-45°) relative to the radial direction, creating an asymmetric geometry that redirects the force direction inwardly during rotation, preventing detachment while maintaining manufacturing feasibility

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The patent applies parameter changes by modifying the geometric parameters of the contact surface. Specifically, the contact surface angle is optimized within 15°-45° to achieve the optimal balance between force direction control and structural simplicity. This parameter optimization ensures reliable engagement without requiring complex manufacturing processes

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the tightening force on the rotary drum is increased, then the passive tooth remains engaged with the driving tooth, but the energy consumption and system load increase

Engineering Contradiction:

Improveengagement stabilityVSAvoidtightening force energy

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies inversion by reversing the conventional approach. Instead of increasing tightening force to prevent detachment, the design inverts the force direction through the inclined contact surface to actively guide the passive tooth into engagement. This inversion transforms the detachment problem into an self-engaging mechanism that reduces the required tightening force and associated energy consumption

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS10647518B2Spiral conveying mesh chain

Publication Date: 2020.05.12 WU BAODONG

AI summary

A spiral conveying mesh chain which pertains to the field of conveying equipment includes a conveying mesh chain main body. The edge of the inner side of the conveying mesh chain main body is uniformly provided with passive teeth. The passive teeth are used to engage with driving teeth on the outer periphery of a rotating drum for driving the conveying mesh chain main body to rotate. The contact surface of the passive tooth and the driving tooth is one item selected from a group consisting of an inclined surface, an arc-shaped surface, a V-shaped contact surface, and a T-shaped contact surface, so that the force direction between the passive tooth and the driving tooth is inwardly deviated relative to the rotation direction of the conveying mesh chain.