Split Drive Sprocket Assembly for Rapid Conveyor Replacement

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Solution Overview

Problem

Current methods for replacing drive sprockets in conveyor systems are labor-intensive and time-consuming, requiring disassembly of the entire shaft/sprocket system, resulting in significant downtime.

Innovation Solution

A split drive sprocket assembly with two separable portions that can be quickly connected and disconnected from a shaft, allowing for easy replacement without disassembling the entire system, featuring radially extending teeth and shoulders that engage with the belt for rotational torque application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If conventional drive sprocket replacement methods are used, then the sprocket can be replaced, but the entire shaft/sprocket system must be disassembled resulting in significant downtime

Engineering Contradiction:
Improvesprocket replacement easeVSAvoiddowntime
Core Design Contradiction:
Ease of repairVSLoss of time

Solution Approach 1:

The drive sprocket is divided into two separate halves (first sprocket portion and second sprocket portion) that can be independently removed from the shaft. This segmentation allows the sprocket to be replaced without disassembling the entire shaft/sprocket system, thereby reducing downtime while maintaining repairability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The sprocket portions are designed to be extractable from the shaft through axial movement. The first and second sprocket portions can be independently extracted from the shaft by overcoming the retention forces (friction and shoulder contact), enabling quick replacement without affecting other system components.

Inventive Principle:
Principle #2Taking out (Extraction)

2Strength

If the drive sprocket is made as a single solid piece, then structural strength is maintained, but replacement requires complete system disassembly

Engineering Contradiction:
Improvesprocket structural strengthVSAvoidsprocket assembly complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The sprocket is segmented into two halves that join together to form the complete circular sprocket body. The joining mechanism (through bolts or keyway connection) maintains the structural integrity and strength equivalent to a solid sprocket, while enabling independent removal and replacement of each half.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The first and second sprocket portions are combined through a joining mechanism (bolts or keyway) to form a unified sprocket body that functions as a single structural unit. This merging maintains the strength and rotational stability of a solid sprocket while preserving the benefit of separable construction for maintenance.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables rapid and efficient replacement of drive sprockets, minimizing downtime and allowing for easy maintenance by allowing the sprocket assembly to be disengaged from the shaft for part replacement without affecting the entire system's operation.

Implementation Method 1

The teeth of the first sprocket portion and the second sprocket portion are engaged with a belt such that while the teeth are engaged with the belt, the first and second shoulder are configured to overlap with the belt. The sprocket body is rotated so that the teeth apply rotational torque on the belt to move the belt

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11685609B2Split drive sprocket assembly
Publication Date: 2023.06.27 BROWN SR TERRY MICHAEL
  • US11685609B2 patent drawing
  • US11685609B2 patent drawing
  • US11685609B2 patent drawing

AI summary

A split drive sprocket assembly includes: a first sprocket portion and a second sprocket portion configured to be joined along an opposing mating surface to form a cylindrical sprocket body; a series of teeth extending radially from a circumferential end of the first sprocket portion and the second sprocket portion; a first shoulder connected to the first sprocket portion and extending radially so as to extend from an axial further than the teeth extends from the axial and spaced axially apart from the teeth; a second shoulder connected to the second sprocket portion and extending radially so as to extend from the axial further than the teeth extends from the axial and spaced axially apart from the teeth. The first sprocket portion and the second sprocket portion are configured to engage a belt with the teeth and the first and second shoulder are configured to overlap with the belt while the teeth are engaged with the belt.