Conveyor Belt Cleaner Damper Mechanism for Vibration Control
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Solution Overview
Problem
Conveyor belt cleaners in bulk material handling systems face issues with excessive wear and vibration due to improper engagement with the conveyor belt, leading to reduced cleaning efficiency and potential damage to the belt and equipment.
Innovation Solution
A conveyor belt cleaner design featuring a pivotable scraping member with a damper mechanism using magnetorheological or electrorheological fluid to adjust damping characteristics, ensuring optimal engagement and vibration reduction based on operating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the scraper blades are biased against the conveyor belt with excessive force to improve cleaning efficiency, then the scraping pressure increases, but the wear on scraper blades and conveyor belt increases, and the tip temperature increases due to friction
Solution Approach 1:
The patent applies dynamics by making the scraper blade engagement force variable rather than fixed. The tensioning device allows the scraping force to dynamically adjust based on operating conditions, material flow, and belt state. This enables the system to maintain optimal cleaning pressure while preventing excessive wear and heat generation through adaptive force control.
Solution Approach 2:
The patent implements parameter changes by allowing the scraping force and engagement characteristics to vary based on operational requirements. The tensioning mechanism enables modification of the scraping pressure parameter in response to changing conditions such as material type, belt speed, and accumulation levels, optimizing the balance between cleaning effectiveness and component durability.
2Productivity
If the scraper blades are biased against the conveyor belt with excessive force to improve cleaning efficiency, then the scraping pressure increases, but the tip of the scraper blade develops excessively high temperature due to friction
Solution Approach 1:
The dynamic tensioning system allows real-time adjustment of scraping force to prevent excessive heat generation. By adapting the engagement force to actual cleaning needs, the system maintains sufficient pressure for effective cleaning while minimizing frictional heat buildup at the blade tip, thereby preventing thermal damage to both the blade and conveyor belt.
3Reliability
If the scraper blades are biased against the conveyor belt with too small force to reduce wear, then the scraping pressure decreases, but the scraper blades cannot effectively clean the conveyor belt
Solution Approach 1:
The tensioning device enables the scraping force to dynamically respond to cleaning requirements. Rather than using a fixed low force that guarantees reduced wear but insufficient cleaning, the system can increase engagement force when material accumulation requires it, while maintaining lower force during normal operation to minimize wear.
Solution Approach 2:
The system changes the scraping force parameter adaptively based on operational conditions. The tensioning mechanism allows the scraping pressure to be adjusted upward when cleaning effectiveness is compromised and reduced when wear prevention is the priority, optimizing both cleaning performance and component life throughout operation.
4Object-affected harmful factors
If the scraper blades are made more rigid to reduce vibration and chatter, then the vibration decreases, but the cleaning angle and engagement force control becomes more difficult
Solution Approach 1:
The patent applies dynamics by using a flexible yet controlled scraping mechanism. The tensioning device provides sufficient rigidity to minimize vibration and chatter during operation, while maintaining the ability to adjust engagement force and cleaning angle through the tensioning mechanism. This dynamic balance ensures both vibration reduction and operational flexibility.
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 solution effectively reduces vibration and wear, maintaining consistent cleaning efficiency and extending the lifespan of scraper blades and conveyor belt components.
Implementation Method 1
The fluid chamber includes a fluid such as magnetorheological fluid or electrorheological fluid
Implementation Method 2
The fluid chamber includes a fluid such as magnetorheological fluid or electrorheological fluid
Data Source
AI summary
A bulk material handling accessory such as a conveyor belt cleaner for use in connection with a bulk material handling system. The bulk material handling accessory includes a main frame, a scraping member including an arm and a scraper blade pivotally attached to the main frame, and a damper mechanism coupled at one end to the main frame and at another end to the scraping member. A mounting mechanism is attached to the main frame for providing linear and rotational movement of the main frame and the associated scraping member and damper mechanism. The damper mechanism includes a damper having a piston and a housing having a fluid chamber. The viscosity of the fluid within the fluid chamber is selectively changeable to change the damping characteristics of the damper mechanism to accommodate changes in operating conditions.