Idler Control System for Cable Conveyor Tension Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cable conveyor systems face issues in maintaining proper tension, leading to potential damage when the cable stretches or becomes too loose, causing system failure.
Innovation Solution
A pneumatic cylinder system with a magnetic switch and proximity switch mechanism that applies force proportionate to pressure to sense cable tension and automatically shuts down the system when the cable is too loose or fails, preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cable conveyor system operates without a tension monitoring mechanism, then the system can run continuously without interruption, but the cable may stretch or become too loose causing system failure and damage to parts
Solution Approach 1:
The patent implements feedback control by using a magnetic switch and magnet arrangement that continuously monitors cable tension through the pneumatic cylinder position. When the cable tension deviates from the acceptable range, the magnetic switch detects the position change and sends a signal to shut down the conveyor system, preventing damage. This closed-loop feedback mechanism resolves the contradiction by automatically detecting and responding to tension variations without requiring complex manual monitoring systems.
Solution Approach 2:
The system performs self-monitoring and self-protection through the integrated magnetic switch and proximity switch that automatically detect cable tension issues and trigger shutdowns without external intervention. The pneumatic cylinder system itself serves as both the tensioning mechanism and the sensing element, eliminating the need for separate complex monitoring equipment while maintaining system reliability.
2Reliability
If a magnetic switch and magnet arrangement is added to monitor cable tension, then the system can detect loose cable conditions, but the device complexity increases
Solution Approach 1:
The pneumatic cylinder serves multiple functions: it acts as both the cable tensioning device and the sensing element for detecting cable tension status. The magnetic switch and magnet arrangement, while adding components, are integrated into the existing pneumatic system structure, allowing the same mechanical element to perform both actuation and sensing functions, thereby reducing overall system complexity.
Solution Approach 2:
The magnetic field serves as an intermediary between the mechanical cable tension and the electrical shutdown signal. Instead of directly measuring cable tension with complex mechanical sensors, the patent uses the magnetic switch to detect the position of the magnet on the piston, which indirectly indicates cable tension status. This intermediary approach simplifies the monitoring system by using magnetic coupling rather than direct mechanical measurement.
3Object-affected harmful factors
If the system shuts down automatically when cable tension is out of range, then damage is prevented, but productivity is reduced due to interruptions
Solution Approach 1:
The system takes preliminary action by detecting cable tension issues before they cause actual damage through the proximity switch and magnetic switch monitoring. By shutting down the system in advance when the cable becomes too loose or stretches, the patent prevents harmful effects from occurring. This early detection and prevention approach resolves the contradiction by minimizing damage risk while allowing quick recovery and restart once the issue is addressed.
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
Effectively prevents damage to the conveyor system by automatically shutting it down when the cable is not within an acceptable tension range, allowing for safe inspection and adjustment of the cable before restarting the system.
Implementation Method 1
The relative position of a magnetic switch and a magnet on the piston in the cylinder provides a way to sense a lack of tension in the cable
Implementation Method 2
if the cable stretches or fails, a carriage having an idler thereon, will move close enough to a proximity switch to cause the proximity switch to shut down the system
Implementation Method 3
A fluid cylinder/piston applies a force on the cable proportionate to the pressure that is regulated to the cylinder during normal operation
Data Source
AI summary
An improvement to cable conveyor system using a pneumatic cylinder system for keeping a cable tight is provided for preventing damage to the system if the cable stretches/fails or is too loose. The fluid cylinder/piston applies a force on the cable proportionate to the pressure that is regulated to the cylinder during normal operation of the cable conveyor system. The relative position of a magnetic switch and a magnet on a piston in the cylinder, provides a way to sense a lack of tension in the cable and shut the system down before damage is done to the conveyor. Likewise, if the cable stretches or fails, a carriage having an idler thereon, will move close enough to a proximity switch to cause the proximity switch to shut down the system.