faults of double column stacker
Common Faults and Maintenance of Double Column Stacker
Stacking machines are the core equipment in modern automated three-dimensional warehouses. Their main function is to automatically store goods. The widespread use of stacking machines can effectively save manpower, greatly improve the efficiency of logistics warehousing operations, and benefit enterprises and even the entire supply chain. significantly improved.
Although the use of stackers is becoming more and more common, some companies have insufficient understanding of stacker failures and maintenance. Problems such as long time required for stacker failure repairs and slow response times are common. Therefore, in-depth analysis of common faults of stackers, improvement of faults and scientific maintenance have become the focus of research in this field.
The basic structure of the stacker can be learned in detail by clicking here
Common faults of double column stacker
The structure of the double-column stacker is very complex, and its working principles involve various fields such as machinery, electrical, control, computers, information technology, and network communications. During long-term and high-intensity work, some faults often occur, mainly including the following: aspects:
1. Mechanical failure
During the continuous operation of the stacker, some problems will occur in the built-in mechanical module. The main symptoms are as follows:
① The core of the stacker vibrates violently and for a long time during operation.
② The ground rails, running wheels and guide wheels of the stacker will be severely worn during operation. Long-term operation will have a great impact on the stability of the driving mechanism, and the frequency of travel will occur, thus triggering the alarm device.
③The guide wheels on the traveling mechanism are easy to loosen after a long period of operation. If the stacker runs too fast or vibrates too violently during operation, the guide wheel is also prone to separation. The play and separation of the guide wheel are the main reasons for the separation of the stacker. In order to avoid this kind of failure, relevant maintenance personnel should regularly check the shifting mechanism of the stacker to determine whether it is operating normally.
④ During long-term work, the fork telescopic mechanism is prone to aging and wear, and the conveyor belt may be locked and stuck and unable to work properly.
⑤The lifting mechanism is prone to wear during operation. As the stacking position changes, the motor drive current will continue to increase, the alarm device will be triggered, and the stacker will have an emergency shutdown failure.
⑥The column is faulty. The column is the most important load-bearing mechanism of the stacker. The stress situation is relatively complex, so the probability of failure is also the highest.
Therefore, during work, there are certain requirements for the strength and stiffness of the columns. At present, the material used by double-column stackers is mainly No. 45 steel. However, the advantage of No. 45 steel is that it has excellent mechanical properties but poor welding performance. Therefore, the vibration of the stacker during the working process can be avoided, causing the column welds to crack.
2. Control system failure
The inverter system in the control system may malfunction and send an alarm signal, and normal operation will be interrupted by the alarm signal. During the random assignment of cargo placement, cargo can be stacked in a disordered manner because the control system lacks a common control program for the cargo.
3. Noise fault
Noise is one of the most direct hazards to people caused by stacker cranes. When the noise is severe, it can damage the hearing, nervous system and cardiovascular system. Therefore, the vibration of the drive motor should be controlled as much as possible during use to reduce the noise generated by the friction between the guide wheel and the wheel rail of the operating mechanism, the loading platform and the column.
4. Stacker crane traveling mechanism failure
The guide wheels on the stacker’s traveling mechanism are prone to loosening after a long period of operation. If the stacker runs too fast or vibrates too violently during operation, the guide wheels are prone to separation. The play and separation of the guide wheels are the main reasons for the derailment of the stacker. In order to avoid this kind of failure, relevant maintenance personnel should regularly check the shifting mechanism of the stacker to determine whether it is operating normally.
Daily maintenance of double column stacker
1. Improve the operating environment of stacker cranes
The stacker is a highly integrated electromechanical equipment. The good operation of the machine requires a good operating environment, which can greatly improve the reliability and safety of the stacker. At the same time, in warehouse management, it is necessary to keep records of daily maintenance of stackers, keep the laser rangefinders and reflectors of stackers clean, and perform daily maintenance work.
2. Establish a data monitoring system for important operation conditions of stackers
The operation of stackers involves many structural components and control modules. By recording and analyzing the current, voltage, temperature and other parameters of the inverter used in the stacker, the changes in the working condition data, the operation status and other possible problems of the stacker can be observed at any time.
Slight changes in the above parameters may reflect the changes in the mechanical strength of the stacker. The working condition of the stacker, such as current, voltage, temperature and vibration, can be judged according to the changes in the data, and can be found and treated before the failure is expanded to prevent greater losses.
3. Strengthen the mechanical structure of the stacker
Through the analysis of stacker crane faults, it is found that most of the most common faults occur in the traveling mechanism of the stacker crane. The long-term operation of the stacker’s traveling mechanism can easily cause strong vibrations of the stacker, thereby increasing the wear between the components of the stacker.
In order to effectively solve the technical problem of vibration wear, technical staff are required to increase the analysis of the causes of wear, effectively extend the service life of easy-to-wear parts such as walking wheels and sliding wheels, and scientifically determine the service life of walking wheels and sliding wheels and replace them regularly.
Therefore, in order to reduce the wear of components caused by the vibration of the stacker, it is necessary to strengthen the mechanical structure of the stacker. The specific measures that can be taken are as follows:
①In order to increase its stress area, the cross-sectional length of the stacker column can be increased.
② Increase the cross-sectional thickness of the column to increase its stress-bearing area and slow down the wear and tear of the column.
③ Change the top and root of the column from channel steel to solid steel to increase the stress-bearing area of the top and root.
④ Establish a “health” document for the stacker, record the usage time, regularly check the wear data of parts, and reasonably determine the replacement time of vulnerable parts to ensure the safe operation of the stacker.
4. Carry out management and maintenance of stacker cranes
Regularly check the lubrication effect of the stacker, adjust the lifting chain, ensure the normal operation of the fork, and ensure the stability of the fasteners. Before the stacker enters the warehouse, it is necessary to check the stacking effect of the goods to ensure the shape of the goods and the cleanliness and smoothness of the stacker’s track.
Find the best stacker crane control strategy to achieve a relative balance of mileage, telescopic forks and load weight to ensure uniform mechanical wear and equalize pressure on the loading platform.
Fault diagnosis and maintenance of stacker cranes is a systematic project. This article analyzes the basic structure and common faults of double-column stackers widely used in logistics warehouses, and puts forward requirements for stacker maintenance and upkeep based on this, providing a certain reference for the use and management of double-column stackers.
As a professional stacker crane rails supplier, Glory Rail has established cooperation with a number of logistics and storage solution providers and is committed to the integrated supply of raw materials for automated storage rail systems, including various conventional types of lifting rails, H-beam rails, and customized special shapes. track.
H-beam rail is one of the common forms of stacker crane rails. European standard H-beam is mostly used. The rail can be fixed on the ground and the top through the connecting plate. The stacker runs smoothly. We reserve various types of H-beam rails all year round. The factory has a laser cutting and welding production line, which can provide H-beam rail and connecting plate welding processing, which can reduce the workload and processing time of the project site, improve the efficiency of on-site operations, and reduce engineering costs.
If you have any needs of the rails or the technology support about the stacker design, just contact us!
