Grinder Table Inclination Detection Using Sensor Arrangement
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Solution Overview
Problem
Industrial grinders, particularly vertical mills, face damage and costly shutdowns due to uneven compressive forces from hydraulic or control system faults, leading to grinding table tilting, which existing technologies fail to detect in time.
Innovation Solution
A sensor arrangement, including eddy current, tracer, or capacitive sensors, connected to a central processing unit and human-machine interface, detects changes in grinding table inclination beyond a threshold, preventing damage by alerting operators to potential tilting and allowing for timely intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensor arrangement is installed to detect grinding table tilting, then damage prevention capability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical tilt detection mechanisms with sensor-based detection systems. Sensors (such as accelerometers, gyroscopes, or displacement sensors) are installed on the grinding table to directly measure tilt angles, eliminating the need for complex mechanical linkages and lever systems while improving detection accuracy and reliability.
Solution Approach 2:
The patent introduces a control unit as an intermediary that processes sensor signals and generates alarm signals. This control unit acts as a mediator between the physical tilt detection and the alarm system, enabling intelligent decision-making about when to trigger alarms based on predefined threshold values, thereby improving damage prevention while maintaining manageable system complexity.
2Reliability
If alarm signals are generated based on threshold values, then timely damage detection is improved, but loss of time for system response increases
Solution Approach 1:
The patent establishes predefined threshold values for tilt angles before the grinding operation begins. These thresholds are set during system configuration or initial setup, allowing the control unit to immediately compare real-time sensor readings against predetermined safe operating limits. This preliminary action enables instant alarm triggering when thresholds are exceeded, eliminating any delay in detecting dangerous tilt conditions.
Solution Approach 2:
The patent implements a continuous feedback loop where sensors monitor the grinding table's tilt angle in real-time, the control unit compares measurements against threshold values, and alarm signals are generated immediately when thresholds are breached. This closed-loop feedback system ensures continuous monitoring and instantaneous response to abnormal tilt conditions, minimizing response time while maintaining high reliability.
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 prevents damage to slide bearings and adjacent components by accurately distinguishing tilting from normal movements, reducing production stoppages and repair costs by enabling early detection and correction of inclination changes.
Implementation Method 1
A sensor arrangement, including eddy current, tracer, or capacitive sensors
Implementation Method 2
A sensor arrangement, including eddy current, tracer, or capacitive sensors
Data Source
AI summary
A grinder includes a grinding table rotatable about a first rotational axis and at least two grinding rollers. Each of the at least two grinding rollers is arranged for rotation about a second rotational axis such that ground material can be comminuted between the grinding table and the grinding rollers during operation. A sensor arrangement can detect a change in inclination of the grinding table beyond a given threshold value.