ingiant technology | Industry new | March 5.2025
In the crane operation system, the slip ring is an absolutely key device, just like the "nerve center" of the human body, which accurately and stably realizes the transmission of power and signals between the fixed and rotating parts of the equipment. Below we will introduce the relevant information of the crane slip ring in detail.
1. Working principle and structure of crane slip ring
As a professional electromechanical equipment, the crane slip ring is responsible for the transmission of power and signals when the equipment is running, effectively avoiding many problems caused by cable entanglement. Its core structure consists of conductive rings and brushes. The conductive rings are mostly made of metal materials with excellent conductivity such as copper and silver. After special insulation treatment, they are firmly installed on the rotating shaft. The brushes are made of graphite or special alloys. During the operation of the equipment, the brushes always maintain close contact with the conductive rings to achieve current conduction.
When the equipment is running, once the rotating parts of the crane start to rotate, the brushes will slide at a uniform speed on the surface of the conductive ring. This sliding contact method ensures that the current can be continuously and stably transmitted from the fixed end to the rotating end. Due to the complexity and diversity of actual working scenarios, Ingiant Technology Slip Rings provides different solutions in design to meet customer needs. Some slip rings are designed for high-speed rotation scenarios and can maintain good transmission performance at high speeds; while other slip rings focus on large current transmission to meet the power requirements of specific equipment.
2. Advantages and application scenarios of different types of crane slip rings
1. High-voltage slip rings
High-voltage slip rings are specially developed to cope with high-voltage environments. They have excellent insulation performance and pressure resistance, and can stably transmit high voltage and high current for a long time. This type of slip ring has been widely used in equipment such as large port cranes and metallurgical cranes. These large equipment require powerful electric drive during operation, and high-voltage slip rings can just meet this stringent requirement and ensure the efficient operation of the equipment.
2. Signal slip rings
Signal slip rings are mainly responsible for the transmission of various signals, including data signals, control signals, etc. It shows extremely high stability and accuracy during signal transmission. In the automated terminal intelligent cranes with extremely high control accuracy requirements, signal slip rings play an irreplaceable role, ensuring that control instructions can be accurately and accurately transmitted to achieve precise operation of the crane.
3. Combined slip rings
The combined slip ring innovatively integrates power transmission and signal transmission functions, which can not only realize power supply, but also complete signal transmission. This design effectively saves the installation space of the equipment and greatly reduces the complexity of wiring. In special cranes in the aerospace field, due to the very limited space resources, the advantages of combined slip rings are fully utilized, providing reliable guarantee for the normal operation of the equipment.
4. Fiber Optic Slip Rings
Fiber optic slip rings use optical fibers to transmit signals, and have outstanding advantages such as strong anti-interference ability and fast transmission rate. When operating cranes in the military field, they often face complex electromagnetic environments. Fiber optic slip rings can ensure that signals are not interfered with and are transmitted stably, providing strong support for the smooth execution of military missions.
3. Key points for selecting crane slip rings
1. Determine the transmission requirements
When selecting a crane slip ring, you must first clarify the transmission requirements of the crane. Carefully determine whether the crane needs to transmit power, signals, or both, and accurately obtain specific parameters such as voltage, current, and signal type. According to these parameters, accurately select the matching slip ring type to avoid affecting the normal operation of the crane or even causing safety accidents due to insufficient transmission capacity of the slip ring.
2. Consider the working environment
The working environment of the crane is usually very harsh, so when selecting the type, you must fully consider the environmental factors in which the slip ring is located. High temperature, high humidity, dust, corrosive gas and other environments will affect the performance of the slip ring. For example, a crane working in a high temperature environment should choose a high temperature resistant slip ring; a crane operating in a humid environment should choose a slip ring with good waterproof and moisture-proof properties to ensure that the slip ring can still work normally in harsh environments.
3. Evaluate the speed and life requirements
The speed and frequency of use of different cranes vary greatly. When selecting, you need to choose a suitable slip ring based on the actual speed and expected service life of the crane. For high-speed cranes, it is necessary to select slip rings that can adapt to high speeds to reduce wear caused by excessively high speeds, thereby extending the service life of the slip rings and reducing equipment maintenance costs.
4. Daily maintenance and troubleshooting of crane slip rings
1. Daily maintenance
Regular cleaning of slip rings is an important part of daily maintenance. Dust, oil and other impurities on the surface of the slip rings should be removed in time to prevent these impurities from affecting the conductive properties of the slip rings. At the same time, pay close attention to the wear of the brushes. When the brushes are worn to a certain extent, they should be replaced in time to ensure the normal operation of the slip rings. In addition, tighten the connection parts of the slip rings to prevent poor contact due to looseness, which affects the normal operation of the equipment.
2. Troubleshooting
When the slip ring fails, first check the contact between the brush and the conductive ring to see if there is poor contact, sparking and other phenomena. If there are traces of ablation on the surface of the slip ring, it is necessary to analyze the cause of the ablation in depth. It may be caused by factors such as excessive current and excessive contact resistance. In addition, the insulation performance of the slip ring should be tested to ensure that it is within the normal range and to ensure the safe operation of the equipment.
In modern industrial production, the importance of crane slip rings has become increasingly prominent. By fully understanding the working principle, type characteristics, selection methods and maintenance points of slip rings, we can lay a solid foundation for the efficient and stable operation of cranes and promote the entire industrial production to a new level.
Frequently Asked Questions
Q1: Why are there black spots on the surface of the slip ring?
A: It is mainly caused by poor lubrication, carbon brush wear or unqualified materials, which lead to abnormal friction. It is necessary to regularly check the contact surface and replace the worn parts.
Q2: How to deal with the slip ring rotation jam?
A: Check whether the bearing is damaged or the main shaft is broken, ensure that the installation parameters match the equipment requirements, and use anti-seismic design for vibration environment.
Q3: Common causes of slip ring short circuit or burnout?
A: Current overload, wire insulation layer damage or internal water ingress, need to install circuit protection and confirm that the working voltage meets the design requirements.
Q4: How to solve the problem of signal transmission interference?
A: The signal type must be clarified during design and shielded wires must be used. The formed slip ring can shield the external cable or replace the special model.
Q5: What should be paid attention to in the daily maintenance of the slip ring?
A: Regularly clean the carbon powder residue, check the lubrication status and wear, and avoid using hard objects such as steel wire to directly wipe the contact surface.
Q6: What are the effects of substandard slip ring materials?
A: It is easy to accelerate wear and generate abnormal heat, shortening the service life. It is recommended to use alloy materials with qualified hardness and high temperature resistance.
Q7: What should I do if the slip ring fails frequently in a humid environment?
A: It is necessary to state the environmental requirements in advance and select models with a protection level of IP65 or above to avoid water vapor or dust intrusion and short circuit.
Post time: Apr-03-2025