Self-Aligning Belt Pulley with Pivoting Mechanism

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Solution Overview

Problem

Conveyor systems face misalignment issues due to uneven surfaces, leading to belt wear, reduced load capacity, and potential spillage, which existing technologies struggle to address effectively.

Innovation Solution

A self-aligning belt pulley with a cylindrical roller featuring concave portions and a pivot mechanism, including an elongated frame member and a tensioning means, to maintain belt alignment even on uneven surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If individual tighteners are adjusted to apply equal tension to the belt, then belt misalignment is prevented, but the adjustment process is time consuming and subject to human error

Engineering Contradiction:
Improvebelt alignmentVSAvoidadjustment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The pulley assembly is designed to automatically self-align through the pivoting mechanism. The pivot bracket allows the pulley to rotate and find its proper alignment position without requiring manual adjustment of tighteners, making the system self-correcting and eliminating time-consuming manual intervention

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The pulley assembly transitions from a static fixed position to a dynamic pivoting capability. The pivot mechanism enables the pulley to rotate and adapt its position automatically in response to belt tension and alignment requirements, replacing manual adjustment with dynamic self-adjustment

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the conveyor system rests on an uneven surface, then the frame twists causing pulleys to rest at an angle, but this creates belt misalignment and uneven wear

Engineering Contradiction:
Improveadaptation to uneven surfacesVSAvoidbelt alignment
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The pulley assembly is designed with pivoting capability that allows it to dynamically adapt to uneven surfaces. The pivot bracket enables the pulley to rotate and find its proper alignment position automatically, compensating for frame distortion caused by uneven ground conditions

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the orientation parameter of the pulley through automatic pivoting. The pivot mechanism allows the pulley to adjust its angular position in response to uneven surfaces, maintaining proper belt alignment despite variations in ground conditions

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If pulleys are disposed at an angle to the normal plane of the conveyor system, then the high side of the pulley is created, but this causes the belt to misalign, slip, and experience uneven wear

Engineering Contradiction:
Improveautomatic alignmentVSAvoidbelt alignment
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The pulley assembly automatically self-aligns through the pivoting mechanism without requiring external intervention. The pivot bracket allows the pulley to rotate and find its proper alignment position automatically, preventing misalignment, slippage, and uneven wear through self-correction

Inventive Principle:
Principle #25Self-service

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

The self-aligning belt pulley effectively prevents belt misalignment, reduces wear, and maintains consistent tension, enhancing the operational efficiency and reliability of conveyor systems, especially in agricultural or mining operations.

Implementation Method 1

a pivot point mechanism, having an elongated frame member with a central connection point. In particular embodiments, a pivot bracket is pivotably coupled with the connection point

Methodology Applied
Scientific EffectPivoting mechanism: Hinge

Implementation Method 2

The pivoting mechanism may further include a tensioning means operatively coupled with the pivot bracket for selectively applying tension to the elongated frame member and cylindrical roller

Methodology Applied
Scientific EffectMechanical tension: Tension

Implementation Method 3

The tensioning means includes an adjustment stem coupled with the pivot bracket and an anchor point. Rotation of the adjustment stem in one direction draws the pivot bracket toward the anchor point

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 4

a cylindrical roller with a circumferential roller surface with one or more concave portions formed within the circumferential roller surface

Methodology Applied
Scientific EffectGeometric guidance: Geometry

Data Source

PatentUS12338075B2Self-aligning belt pulley
Publication Date: 2025.06.24 BREHMER MFG INC
  • US12338075B2 patent drawing
  • US12338075B2 patent drawing
  • US12338075B2 patent drawing

AI summary

A self-aligning belt pulley, in various embodiments, includes a cylindrical roller having one or more concave portions formed in a circumferential rolling surface. In some embodiments, one or more raised peaks extend circumferentially along, and radially outwardly from, the circumferential roller surface. In various embodiments, a cylindrical roller couples with a pivoting mechanism having an elongated member that is offset and parallel to the circumferential rolling surface. The elongated member has a centrally located connection point that permits a pivoting bracket to be attached to it, thereby creating a pivot point that is anchored at an opposite end portion and automatically adjusts a position of the cylindrical roller. The pivoting mechanism may also function as a tensioning device.