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Principle of Operation of the Automatic Reversing System for Mining Wet-Spraying Trucks
Release time:
2026-07-01
Source:
Author:
Summary:
The automatic reversing system of the mining wet‑spraying carriage is a core technology that enables the equipment to perform continuous pumping operations. By employing precise control logic and reliable actuators, it ensures the continuity and stability of concrete delivery. This system integrates the latest advancements from multiple technical domains, including mechanical, hydraulic, and electrical engineering.
I. System Architecture
Detection and Perception Unit
Direction‑change signal acquisition system:
1. Main cylinder position detection: employs a magnetostrictive displacement sensor, with accuracy of… ±0.5mm
2. Concrete Level Monitoring: Ultrasonic level sensors provide real-time monitoring of hopper material levels.
3. Pressure Sensing System: Real-time monitoring of the main hydraulic cylinder’s operating pressure.
4. Proximity Switch Assembly: Precise Position Detection at Limit Points
Control Processing Center
Intelligent Decision Unit:
Programmable Controller ( PLC ): Processes sensor signals and executes switching logic.
Signal Conditioning Module: Filters and amplifies sensor signals.
Security Monitoring Unit: Monitors the system’s operational status in real time.
Parameter Storage Module: Stores operating parameters and commutation data.
II. Reversing Control Logic
Position Control Mode
Directional switching based on cylinder position:
Set the reversal point position: Optimize the setting based on the cylinder stroke.
Pre‑stroke reversing control: Initiates the reversing action before reaching the end of the stroke.
Position compensation algorithm: automatically compensates for stroke variations caused by internal leakage in the hydraulic cylinder.
Soft limit protection: prevents mechanical impact and overload.
Pressure Control Mode
Directional switching based on system pressure:
1. Pressure threshold setting: dynamically adjusted based on concrete conditions.
2. Pressure Rate-of-Change Monitoring: Detects Abnormal Operating Conditions Such as Tube Occlusion
3. Adaptive pressure regulation: Automatically optimizes switching pressure based on the load.
4. Pressure protection: Automatically switches to unloading mode in case of overpressure.
III. Hydraulic Actuation System
Directional Valve Assembly Configuration
Core actuating component:
Electro-hydraulic proportional directional valve: response time < 100ms
Pilot control circuit: Ensures smooth and reliable directional switching.
Buffer adjustment device: allows adjustment of reversing speed and buffering characteristics.
Safety relief valve assembly: prevents directional‑change shock and overload.
S Valve actuator mechanism
Distribution Valve Control System:
1. Swing cylinder: specially designed, delivering ample output torque.
2. Position-holding mechanism: Ensures stable locking after the switch is fully engaged.
3. Wear Compensation Device: Automatically compensates for wear on the wear plate and cutting ring.
4. Lubrication System: Automatic, Timed, and Metered Lubrication
IV. Control Algorithm Optimization
Intelligent Reversal Strategy
Adaptive control algorithm:
Learning Control: Memorizing Operator Preferences and Optimizing Reversal Parameters
Condition Recognition: Automatic Identification of Different Concrete Properties
Efficiency Optimization: Automatically adjusts the switching timing based on the pumping speed.
Energy-saving control: Optimizing energy consumption while ensuring efficiency.
Fault Response Strategy
Abnormal Condition Handling:
1. Reversal failure detection: automatically identifies and executes repeated reversals.
2. Pipe‑clogging treatment: alternating automatic reverse pumping and forward pumping.
3. Abnormal Pressure Handling: Automatic Adjustment of Reversal Parameters
4. System Protection: Multi-layered safeguards to prevent equipment damage.
V. Human-Computer Interaction Design
User interface
Visualized Control System:
Touchscreen display: Shows reversing status and parameters in real time.
Parameter Settings Interface: Facilitates adjustment of commutation parameters.
Fault Diagnosis Interface: Intuitively Displays Fault Information
Operational Data Logging: Stores Historical Operational Data
Status Indicator
Operational Status Visualization:
1. Reversal Cycle Display: Displays the reversal frequency and period in real time.
2. Position indication: dynamically displays the hydraulic cylinder and S Valve and pipe position
3. Pressure Curve: Real-time plotting of system pressure variation trends.
4. Alarm Notification: Audible and visual alarms indicate abnormal conditions.
VI. System Maintenance and Support
Key Points for Daily Maintenance
Routine examination items:
Sensor Calibration: Regularly verify the accuracy of position sensors.
Hydraulic oil cleanliness: Ensure the oil cleanliness class.
Mechanical Component Inspection: Regularly check for wear and tear.
Electrical connection inspection: Ensure wiring is secure.
Fault diagnosis function
Intelligent Maintenance Support:
1. Self-diagnostic system: automatically detects system faults.
2. Fault Log: Stores system parameters at the time of a fault occurrence.
3. Maintenance Reminder: Perform maintenance according to the operating time prompts.
4. Remote Diagnostics: Supports remote fault diagnosis and maintenance.
VII. Performance Optimization Measures
Efficiency Improvement Plan
Direction for Continuous Improvement:
Commutation Time Optimization: Reducing Commutation Time Through Parameter Optimization
Energy Consumption Control: Optimizing the Commutation Process to Reduce Energy Losses
Reliability Enhancement: Improving Weak Links to Boost System Reliability
Intelligent Upgrade: Incorporating AI algorithms to further enhance optimization.
Adaptive Improvement
Response to Special Operating Conditions:
1. Adaptation to Harsh Environments: Enhancing the System’s Resistance to Contamination
2. Extreme Operating Condition Optimization: Parameter Optimization for Special Operating Conditions
3. Material Improvement: Use of wear-resistant materials to extend service life.
4. Standardized Design: Enhancing Component Commonality and Reliability
Conclusion
The implementation of an automatic reversing system for mining wet‑spraying rigs has significantly enhanced the equipment’s operational efficiency and reliability. By leveraging advanced control algorithms, robust actuators, and an intelligent monitoring system, the system ensures stable performance even under harsh operating conditions. As control technologies continue to evolve, automatic reversing systems will undergo ongoing improvements toward greater intelligence and efficiency, providing more dependable technical support for mining operations. It is recommended that user organizations strengthen operator training, establish comprehensive maintenance and servicing protocols, and fully exploit the system’s capabilities to ensure that the equipment consistently operates at peak performance.
Contact Us
Changsha Base:Hunan Zenxon Heavy Industry Technology Co., Ltd.
Address: Jinrong Tongxin International Industrial Park, Changsha High-tech Zone
Loudi Base:Hunan Haoda Heavy Industry Technology Co., Ltd.
Address: Loudi Avenue, Loudi High-tech Industrial Development Zone, Lianyuan City, Loudi City, Hunan Province
Telephone:400-186-0868
E-mail:3804246750@qq.com
E-mail:19967177733@163.com
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