In terms of mechanical structure, the installation bases or frames of multiple screw elevators are fixed by rigid connection to ensure that they maintain relative position stability during operation. At the same time, high-precision couplings are used to connect the drive shafts of each screw elevator to reduce transmission errors and improve synchronization. In addition, the installation positions of the screw elevators are precisely laid out to distribute the load as evenly as possible between the elevators to avoid uneven loads caused by unreasonable layout.
High-precision screw elevators have high transmission accuracy and repeatability, which can reduce synchronization errors to a certain extent. For example, a ball screw screw elevator is selected, which has the advantages of low friction coefficient, high transmission efficiency, and high positioning accuracy. At the same time, ensure that the manufacturing accuracy of the screw elevator meets the requirements, including the processing accuracy of the screw and the matching accuracy of the nut, so as to improve the synchronization accuracy of the entire system.
Load sensors are installed at the load-bearing part of each screw elevator to monitor the load size of each elevator in real time. The control system analyzes and processes these load data. When the load is uneven, it automatically adjusts the running speed or driving force of each screw elevator to redistribute the load evenly. For example, for the screw elevator with a large load, appropriately reduce its running speed and let the screw elevator with a small load bear more load until the load of each elevator reaches a balanced state.
The key to achieving high-precision synchronous operation is to adopt advanced synchronous control algorithms. Commonly used algorithms include master-slave control algorithm and cross-coupling control algorithm. The master-slave control algorithm uses a screw elevator as the master controller and other elevators as slave controllers. The slave controllers follow the motion trajectory of the master controller. The cross-coupling control algorithm monitors the position deviation between each screw elevator in real time and adjusts the movement of each elevator according to the deviation value to reduce the position error and improve the synchronization accuracy.
The electrical control system must have high reliability and fast response capabilities. Select electrical components such as drivers, controllers and encoders with excellent performance to ensure the accuracy and timeliness of signal transmission. At the same time, the electrical system should be reasonably wired and shielded to reduce electromagnetic interference and avoid synchronization errors caused by signal interference. In addition, accurate control of each screw elevator is achieved through software programming, and control parameters are adjusted in real time according to actual operating conditions to adapt to different load and working conditions.
A real-time monitoring system is established to collect the operating data of each screw elevator in real time through sensors, including position, speed, load and other information, and feed this data back to the control system. The control system continuously adjusts the operating status of each screw elevator according to the feedback data to form a closed-loop control, thereby achieving accurate control of load imbalance and synchronization accuracy. Once the synchronization error or load imbalance is found to exceed the allowable range, the system can promptly issue an alarm signal to remind the operator to check and adjust.
Regular maintenance and calibration of multiple screw elevator systems is an important measure to ensure their long-term stable operation. Check the wear of mechanical parts, such as screws, nuts, couplings, etc., and replace severely worn parts in time to avoid reduced transmission accuracy and uneven load due to component wear. At the same time, check and debug the electrical system, calibrate the accuracy of sensors and encoders, and ensure that the performance of the entire system is always maintained in the best condition.
The above comprehensive measures can effectively solve the problems of uneven load and synchronization accuracy control when multiple screw elevators are running synchronously, improve the reliability and stability of the system, and meet the needs of various industrial application scenarios.
