As an indispensable equipment in modern industry, the safety of magnetic lifting device is directly related to the efficient operation of production operations and personnel safety. These devices by virtue of the powerful magnetic force, can easily lift all kinds of heavy objects, greatly enhancing the work efficiency. However, if the magnetic lifting device is not operated properly or the design is defective, it may also cause serious safety accidents. Therefore, in-depth discussion of the safety specifications of magnetic lifting device, clear from the design and manufacture to the use of maintenance of all aspects of the safety requirements for the protection of production safety, accident prevention is of great significance. In this paper, we will comprehensively analyze the safety technical points of magnetic lifting device, in order to provide scientific guidance for relevant practitioners.
Magnetic lifting device is a kind of advanced mechanical equipment, using the principle of magnetic force to realize the lifting and moving of heavy objects. It realizes the lifting of heavy objects by generating a strong magnetic field and producing an adsorption force on magnetic materials such as steel. This device is widely used in industrial production and logistics transportation, which greatly improves work efficiency and safety. According to the different ways of generating magnetic force, magnetic lifting device is mainly divided into two categories: electromagnetic lifting device and permanent magnet lifting device.
Electromagnetic lifting device: the use of energized coils to generate a magnetic field, through the control of the current to control the generation and disappearance of the magnetic field. This lifting device is suitable for frequent lifting and lowering occasions, such as steel, shipbuilding, machinery manufacturing and other fields. When energized, the electromagnet generates a strong magnetic field that attracts ferromagnetic materials, such as steel. When the power is cut off, the magnetic field disappears and the ferromagnetic material is released. Since the strength of the magnetic field of the electromagnet can be adjusted by the size of the current, this lifting device has good flexibility. However, electromagnetic lifting device requires external power supply, so it cannot be used in the absence of power supply.
Permanent magnet lifting device: the use of permanent magnets to generate a constant magnetic field, to achieve a stable adsorption of ferromagnetic substances. This lifting device is suitable for long time fixed lifting occasions, such as heavy equipment, logistics and warehousing and other fields. The magnetic field strength generated by the permanent magnet is fixed, so this lifting device can realize the stable adsorption and lifting of ferromagnetic substances. Since the magnetic field strength of the permanent magnet is not affected by the power supply, this lifting device can be used in the absence of power supply. However, the magnetic field strength and stability of the permanent magnet lifting device are limited by the performance of the permanent magnet, and may not be flexible enough compared to the electromagnetic lifting device.
The working principle of the magnetic lifting device is based on the interaction between electromagnetic induction and magnetic force. When the electromagnetic lifting device is powered on, the current passes through the coil to generate a magnetic field, which attracts ferromagnetic substances; When the power is cut off, the magnetic field disappears and ferromagnetic substances are released. The permanent magnet lifting device utilizes the high-performance magnetic field of the permanent magnet to achieve stable adsorption of ferromagnetic substances. Whether it is an electromagnetic or permanent magnet lifting device, its working efficiency and safety depend on the strength and stability of the magnetic field.
The working principle of the electromagnetic lifting device is based on the law of electromagnetic induction and Ampere's loop law. When current passes through a coil, according to the law of electromagnetic induction, the coil generates a magnetic field that attracts ferromagnetic material. Meanwhile, according to Ampere's Loop Law, the magnetic field strength inside ferromagnetic materials is directly proportional to the magnetic field strength applied externally. Therefore, when the electromagnet generates a sufficient magnetic field, it can attract and fix ferromagnetic materials. Once the current is disconnected, according to the law of electromagnetic induction, the magnetic field in the coil will quickly disappear, and ferromagnetic substances will also be released.
The permanent magnet lifting device utilizes the constant magnetic field of the permanent magnet to achieve the adsorption and lifting of ferromagnetic substances. The magnetic field strength and direction of permanent magnets are fixed, thus enabling stable adsorption of ferromagnetic substances. Due to the fact that the magnetic field strength of permanent magnets is not affected by external power sources, they can be used in situations without a power source. However, the magnetic field strength and stability of permanent magnets are limited by their own performance, and may not be flexible enough compared to electromagnetic lifting devices. In practical applications, it is necessary to choose a suitable lifting device based on the specific usage environment and requirements.
Magnetic lifting device is a mechanical equipment that uses the principle of magnetic force to lift and move heavy objects, widely used in fields such as steel, shipbuilding, machinery manufacturing, logistics and warehousing. It has the advantages of high efficiency, safety, and flexibility, especially when dealing with heavy, large, or irregularly shaped steel products, demonstrating unique advantages. In addition, in high-tech fields such as nuclear power plants and aerospace, magnetic lifting devices also play an important role in transporting and installing precision equipment.
In the steel industry, magnetic lifting devices are widely used in the transportation of molten steel, hoisting of steel ingots, and recycling of scrap steel. By using a magnetic lifting device, precise control of molten steel can be achieved, improving transport efficiency; At the same time, it can reduce the labor intensity of staff and improve job safety. In the shipbuilding industry, magnetic lifting devices are used for lifting and flipping of ship sections, sections, and large components. Due to the complex structure and heavy weight of the ship, using traditional lifting methods poses significant difficulties and risks. By using magnetic lifting devices, precise control and safe lifting of ship components can be achieved. In addition, in the field of mechanical manufacturing, magnetic lifting devices are widely used in the lifting and installation of heavy equipment and precision components. It can achieve precise control and safe lifting of heavy objects; At the same time, it can also improve production efficiency and reduce labor intensity for workers. In the field of logistics and warehousing, magnetic lifting devices are used for cargo handling, loading and unloading, and storage. Can achieve fast and accurate handling of goods; At the same time, it can also improve warehousing efficiency and management level. In addition, in the field of nuclear power plants, due to the precision and heavy weight of the equipment, traditional lifting methods are prone to damage or radiation pollution to the equipment. By using magnetic lifting devices, precise control and safe lifting of equipment can be achieved; At the same time, it can also reduce the risk of radiation damage to personnel.
The design and manufacturing process of magnetic lifting device strictly follow the relevant national and industry safety norms and standards, such as the “Safety Regulations for Hoisting Machinery” (GB 6067.1-2010) on the specific safety and technical conditions of electromagnetic lifting machinery. These standards not only specify the overall structural layout of the magnetic lifting device, component materials and dimensions, but also put forward clear requirements on the performance indicators of the equipment, the setup and effectiveness of safety guards, etc., in order to ensure that the magnetic lifting device from the very beginning of the design of the high efficiency, reliability and intrinsic safety features.
In the design phase of the magnetic lifting device, the setting of the safety factor is a key technical decision. The safety factor is the ratio between the maximum load that the device can withstand under normal operating conditions and the rated load, which directly reflects the ability of the device to resist overload and accidental conditions. In order to ensure that the magnetic lifting device can still maintain stable and safe operation in the face of unexpected conditions, the designer must scientifically and reasonably determine and rigorously calculate the adequate safety coefficient according to the actual working environment of the equipment, material properties and the expected service life of the equipment and other factors. This will not only effectively prevent equipment damage or even accidents caused by overloading or abnormal working conditions, but also provide sufficient time for the operator to react and take measures, thus guaranteeing the safety and reliability of production operations.
The operation control panel of the magnetic lifting device should be clearly designed, reasonably laid out, with a clear control gear, so that the operator can easily choose and switch between lifting and moving operations according to the actual needs. In order to further enhance the safety and standardization of the operation process, the magnetic lifting device should also be equipped with the necessary warning signal system, such as sound and light alarms and other equipment. When the device starts, stops or encounters abnormal conditions, warning signals can ring in time to remind the operator to pay attention and take appropriate measures to effectively avoid potential safety risks.
In terms of material selection, the components of the magnetic lifting device should be selected according to the strength requirements, wear resistance and corrosion resistance and other criteria to select the appropriate material. For example, the load-bearing structural components should be selected from high-strength steel to ensure adequate load-bearing capacity; key components related to magnetism, such as electromagnets, permanent magnets, etc., should be selected from high remanent magnetic induction strength, high coercivity and good temperature stability of the high-performance permanent magnet materials, and after strict quality inspection to ensure its reliable performance.
In terms of manufacturing process, the entire magnetic lifting device manufacturing process should strictly comply with the relevant manufacturing process specifications to ensure that the precision and reliability of the equipment to meet the design requirements. Especially in the production process, effective quality control measures should be taken to prevent equipment defects or hidden dangers due to improper manufacturing process. In addition, for the machining and assembly of key components, it is more necessary to strive for excellence and achieve precise measurement and fine operation to ensure the excellent quality of the final product.
Before using the magnetic lifting device, the operator should carry out a comprehensive and detailed inspection of the equipment, including but not limited to the electrical system, hydraulic system and control system and other key components of the function test. For the electrical system, should confirm that the power supply is stable and reliable, all kinds of switches, buttons and indicators and other components are working properly, no damage, ablation and other abnormalities; hydraulic system, need to check whether the oil pipeline is intact without leakage, hydraulic pumps, valves and other components of good performance, normal pressure; control system should be to ensure that the sensors, controllers and drives sensitive and effective, the program logic is correct and error-free.
In addition, the operator also needs to understand and confirm the detailed working range of the equipment, load limit and other important parameters, clear equipment in what working conditions under the most appropriate operation, overloading is strictly prohibited to ensure that the equipment is always in the specified conditions. At the same time, in accordance with the equipment manual or relevant specifications, the equipment should be regularly maintained and necessary preventive maintenance to ensure that it is in good working condition.
In the process of operating the magnetic lifting device, the operator must strictly comply with the established operating procedures, maintain a high degree of concentration throughout the entire process, and shall not engage in other activities unrelated to the operation. Especially in the lifting and lowering of heavy objects in this critical link, the operator is required to do a smooth operation, to avoid sudden acceleration or deceleration of the object caused by swinging too large, or even fall off and other accidents.
In the process of lifting, the operator should reasonably plan the route to ensure that the heavy object will not collide with other equipment or structures when moving. At the same time, pay close attention to the operating status of the equipment components, such as found abnormal sound, vibration or temperature is too high, should immediately stop the machine to check, troubleshooting before continuing operations. In addition, for special types of goods or operations in special environments, it is also necessary to take appropriate safety measures in accordance with relevant regulations, such as bundling and fixing, the use of special tools and so on.
A series of high-risk operating behaviors are strictly prohibited during the use of magnetic lifting devices. First and foremost, the load limit of the equipment must not be exceeded, the weight of the heavy object to accurately assess the weight, to avoid overloading the equipment caused by damage, deformation or even lead to safety accidents. At the same time, unlicensed operation is also expressly prohibited behavior, all operators must be professionally trained and obtain the appropriate qualification certificate before they can operate.
Unauthorized or non-professionals are strictly prohibited from modifying the structure of the equipment, adjusting key parameters or destroying the original safety protection functions of the equipment. Such behavior is likely to lead to equipment performance degradation, loss of stability, increase the risk of failure, and even lead to serious personal injury or property damage accidents.
As a heavy equipment, the safety and reliability of the magnetic lifting device is crucial for production operations. Therefore, comprehensive and detailed inspection and maintenance work must be carried out regularly. For the electrical system, cables, connectors, switches and other components should be checked regularly to see if they are intact, and whether the lines are aging or exposed, in order to ensure a stable and reliable supply of electricity, and to avoid accidents caused by electrical failures. For the hydraulic system, it is necessary to check whether the key components such as oil pipelines, hydraulic pumps, valves, etc. are leaking, blocked or damaged to ensure that the hydraulic system works at a stable pressure and operates flexibly.
In terms of the control system, it is necessary to verify whether the control components, sensors, actuators and other equipment are working properly, and whether the data acquisition and processing functions are accurate, in order to ensure that the magnetic lifting device operates accurately according to the preset program. For the magnet part, in addition to checking its appearance with or without damage, deformation, but also need to test its magnetic can meet the use of requirements, such as whether the magnetic induction strength is up to standard, whether the magnetic field distribution is uniform and so on. At the same time, the appearance, function, performance and other aspects of the equipment should also be comprehensively inspected and maintained to ensure that the overall operating condition of the equipment is good.
Magnetic lifting device maintenance is a systematic and detailed work, the specific methods and steps are as follows: First of all, to ensure that the surface of the equipment is clean and free of grease and dust adhesion, can be used to special cleaning agents or high-pressure air pumps to clean up the surface dirt, in order to maintain good visibility and heat dissipation performance; Secondly, regular inspection of the equipment fastening of various components, including but not limited to bolts, nuts, washers and other connectors, to ensure that no loose Finally, for wearing parts such as solenoid coil, hydraulic oil, etc., they should be replaced in time according to the degree of wear and tear to prevent equipment failure or safety accidents due to aging and failure of parts.
When repairing and replacing parts of the magnetic lifting device, the primary safety requirement is to ensure that the equipment is in a de-energized state, and take appropriate safety measures. For example, hanging conspicuous warning signs at the maintenance site to prevent unrelated personnel from approaching the operation area; using insulated tools for operation to avoid accidents caused by electric shock. In addition, maintenance personnel should have solid professional knowledge and rich operational skills. In the maintenance process should strictly abide by the relevant operating procedures and safety norms; fully understand the structure and working principle of the equipment; the correct use of tools and equipment; to avoid new safety hazards due to improper operation.
As an efficient and safe heavy equipment, the operation status of the magnetic lifting device is directly related to the safety and efficiency of production operations. In order to ensure that the magnetic lifting device is always in the best working condition, it should be equipped with a complete set of safety monitoring system. The system realizes real-time monitoring of the magnetic lifting device workload by integrating advanced equipment such as weight sensors, displacement sensors and temperature sensors.
Weight sensors accurately measure the weight of the lifted object to ensure that it will not be overloaded during the lifting process; displacement sensors monitor the position and movement trajectory of the spreader in real time, effectively preventing collision or tipping accidents due to misuse; temperature sensors detect the temperature rise of the key parts of the equipment in real time, to prevent damage to the equipment due to high temperatures or fire accidents. These key data are transmitted to the central control system in real time through wireless transmission technology, so that the operator can grasp the operating status of the equipment at any time, and discover and deal with potential safety hazards in a timely manner.
The safety monitoring system also has an intelligent warning function. Once the equipment operating parameters exceed the preset safety thresholds, the system will immediately trigger the alarm device, and through cell phone text messages, emails and other means of timely notification of the management personnel, to ensure that they can react in the first time to take appropriate safety measures. This greatly improves the efficiency and accuracy of safety management and effectively reduces the risk of safety accidents caused by equipment failure or operational errors.
In the event of a malfunction or accident of a magnetic lifting device, it is crucial that the emergency handling process is activated quickly. Operators should first receive rigorous emergency training, familiar with and master the emergency procedures. Once an abnormality or malfunction of the magnetic lifting device is detected, the first action is to stop the operation of the equipment immediately and quickly cut off the power supply to avoid causing further damage or injury. This step is critical to effectively prevent a chain reaction triggered by the loss of control of the equipment.
Depending on the specific type and extent of the accident, operators need to quickly take appropriate emergency measures. For example, if the accident involves chemical leakage or high-temperature burns and other dangerous situations, the site should be immediately evacuated to a safe area, and set up isolation zones to prevent unrelated personnel from approaching the accident site; if it is a small-scale accident triggered by equipment damage or operational errors, a localized emergency response plan should be activated immediately, such as starting standby equipment, adjusting process parameters, etc.; for any type of accidents, an emergency rescue plan should be activated in a timely manner and the relevant emergency rescue should be notified. For any type of accident, the emergency rescue plan should be activated in time, and the relevant emergency rescue team should be notified to rush to the scene for disposal.
In the process of emergency disposal, communication should be kept free, timely communication and coordination of all forces. After the accident occurs, the accident reporting procedure should be started immediately, and the accident situation should be reported to the higher management and relevant emergency command departments in time. At the same time, it is necessary to protect the accident scene and cooperate with relevant departments to investigate and analyze the accident. Through scientific and rigorous accident investigation, the real cause of the accident can be identified, providing valuable experience and lessons for future safety production.
For accidents occurring in magnetic lifting devices, information such as the time, location, cause and handling process of the accident should be recorded in detail. This information can be recorded in written or electronic form and properly stored. The degree of detail of the accident record directly affects the analysis of the accident and the effect of improvement. Through in-depth analysis of accidents, lessons can be summarized and targeted improvement measures can be proposed to avoid the recurrence of similar accidents.
When analyzing the causes of accidents, they should be considered from multiple perspectives, including equipment failures, human factors, environmental factors and so on. Through in-depth analysis of these factors, the root cause of the accident can be identified, providing a basis for the proposal of improvement measures. When proposing improvement measures, factors such as safety, reliability, feasibility and sustainability should be fully considered. Improvement measures should be targeted and operable, and be able to effectively prevent the recurrence of similar accidents. Improvement measures should also be regularly evaluated and reviewed to ensure their effectiveness and applicability.
The magnetization function in magnetic lifting device realizes high flexibility and wide adaptability of lifting operation through fine regulation of magnetic field strength and range of action. In practical application, according to the weight, volume, material of the lifted object and the different requirements of the lifting environment, the magnetizing function can accurately adjust the strength of the magnetic field to ensure that when lifting and moving heavy objects will not cause the object to slip off, but also minimize the damage to the lifted object. At the same time, the intelligent design of the magnetizing function allows the operator to remotely control or automatically adjust the magnetic field parameters according to the actual working conditions, which greatly improves operational efficiency and safety. However, despite the significant advantages of the magnetizing function, safety norms and operating procedures must be strictly observed in the process of using it. Too high or too low a magnetic field strength may lead to uncontrolled lifting of the object or can not be properly adsorbed, which may lead to serious safety accidents. Therefore, for the use of magnetic function, not only need the operator with professional skills and knowledge, but also have a rigorous work attitude and good emergency response ability.
In the face of large, complex lifting tasks, often need more than one magnetic lifting device to work together to achieve efficient and safe combination of lifting. At this time, the first task is to ensure that all the magnetic lifting devices involved in the operation of the performance parameters match each other, including but not limited to magnetic suction force, load carrying capacity, working range and other aspects of consistency and coordination. This means that each unit must be able to operate stably in a given operating environment and be able to provide adequate power support when required. In order to ensure the stability and safety of the entire combined crane system, the signal transmission and control system between the equipment must be strictly calibrated and verified, to achieve accurate remote control and real-time monitoring, to prevent inconsistent action between the equipment due to signal delays or misoperation, which may cause safety accidents. In the process of combined lifting, it is crucial to reasonably design and implement an effective load distribution program. This means that according to the performance characteristics of each piece of equipment, stress conditions and operating environment and other factors, scientific and reasonable distribution of the total load weight, to avoid single point overload or uneven load distribution.
For the operation of magnetic lifting device under special working conditions, such as high temperature environment may lead to equipment internal component performance degradation or failure; strong magnetic field environment may cause interference or damage to electronic components; corrosive environment may erode the surface of the equipment and the internal structure, reduce the durability and sealing performance of the equipment. In this case, a series of additional precautions must be taken to ensure the safe operation of the equipment. For example, the use of high-temperature-resistant materials for the manufacture of key components; special design of the equipment or the addition of protective cover, heat dissipation system and other auxiliary facilities; regular inspection and maintenance of the equipment to ensure that it is still able to maintain stable and reliable operation under extreme conditions; according to the specific characteristics of the working conditions of the development of a detailed safety operating procedures and contingency plans.
Contact our crane specialists
Send us a message and we will get back to you as soon as possible.
English 
Spanish 
Japanese 
French 
Indonesian 
Thai 
Russian 
Vietnamese 
Arabic