Roll Adjustment System Using Electrical Contact Detection
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Solution Overview
Problem
Existing methods for determining the zero point for a movable roll in grinding equipment are inaccurate and hazardous, particularly for inexperienced operators, and can lead to roll damage and increased wear.
Innovation Solution
A system where the rolls function as an electrical switch to complete a circuit upon contact, signaling the zero point without requiring auditory detection or manual feeler gauge insertion, allowing for automatic adjustment of the separation gap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual detection methods (feeler gauge insertion or auditory detection) are used to determine zero point, then the operator can identify contact between rolls, but the method is hazardous and inaccurate leading to operator risk and roll damage
Solution Approach 1:
The patent replaces manual mechanical detection methods (feeler gauge insertion and auditory detection) with an electrical detection system. The system uses electrical conductive rolls and a detection apparatus that senses electrical contact between rolls to automatically identify the zero point, eliminating the need for operators to manually insert feeler gauges or listen for contact sounds, thereby removing the associated hazards and inaccuracies
Solution Approach 2:
The patent introduces an electrical intermediary system to detect roll contact. The detection apparatus acts as an intermediary between the rolls and the operator, automatically sensing electrical contact and triggering a signal without requiring direct operator involvement in the contact detection process, thus eliminating operator risk and improving detection accuracy
2Measurement precision
If feeler gauge insertion method is used to detect roll contact, then contact can be identified, but the method requires manual intervention and is hazardous
Solution Approach 1:
The system performs self-service by automatically detecting roll contact through electrical conduction. The detection apparatus continuously monitors electrical contact between the conductive rolls and automatically triggers the signal when contact occurs, eliminating the need for operator intervention with feeler gauges and improving both accuracy and ease of operation
Solution Approach 2:
The patent replaces the mechanical feeler gauge insertion method with an electrical sensing system. The detection apparatus uses electrical conductivity to sense roll contact, providing more accurate and safer detection without requiring manual insertion of mechanical feeler gauges between the rolls
3Ease of operation
If auditory detection method is used to identify zero point, then contact can be detected, but the method is unreliable and dangerous for inexperienced operators
Solution Approach 1:
The patent replaces auditory detection with electrical detection. The detection apparatus uses electrical conductivity to sense roll contact, providing a reliable and objective detection method that does not depend on operator hearing ability or experience, thereby improving both ease of operation and detection reliability
Solution Approach 2:
The electrical detection apparatus serves as an intermediary that objectively senses roll contact and triggers a signal. This intermediary system eliminates the need for operators to rely on their hearing and experience to detect contact, providing consistent and reliable detection regardless of operator skill level
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 system enables safer, more accurate, and automated detection of the zero point, reducing operator risk and extending roll lifespan by eliminating manual contact detection methods.
Implementation Method 1
at least a portion of the circumferential surface being electrically conductive... a detection apparatus configured to detect contact between the rolls
Data Source
AI summary
A system may comprise a frame, a pair of rolls with each of the rolls comprising a roll body having opposite ends and a circumferential surface, a plurality of teeth being formed on the circumferential surface, and at least a portion of the circumferential surface being electrically conductive. The roll may also have a roll shaft having end portions extending from the roll body, with each of the end portions extending from one of the ends of the roll body. The system may also comprise roll supports configured to support the rolls on the frame in a manner such that at least one of the rolls is movable to adjust a separation gap between the rolls, a detection apparatus configured to detect contact between the rolls, and a signaling apparatus configured to produce a signal indicating a change in electrical potential is detected by the detection apparatus.