Product Description
Densen customized grid spring coupling,steel grid coupling,grid flexible coupling
| Product Name | Densen customized grid spring coupling,steel grid coupling,grid flexible coupling |
| DN mm | 11~180mm |
| Axis Angle | 1°00/1°30 |
| Rated Torque | 10~25000 N·m |
| Allowable speed | 5000~350N·m |
| Material | 35CrMo/HT200/ZG270 |
| Application | Widely used in metallurgy, mining, engineering and other fields. |
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Features:
1,Double-diaphragm and small axial opposite wheel type coupling is the patent product developed by our factory,the patent No. ZL.99 2 46247.9
2,With compact strcture, the adjustment capacity,anti-inpact and vibration-absorbing etc properties will be higher by 35%-40% than those of single diaphragm opposite wheel type.
3,Under unexpected diaphragm breakage conditions, the plum CZPT shape flange can still transfer the torque ,the safety property is good .
Company Information
Equipment
Application Case
Typical case of diaphragm coupling applied to variable frequency speed control equipment
JMB type coupling is applied to HangZhou Oilfield Thermal Power Plant
According to the requirements of HangZhou Electric Power Corporation, HangZhou Oilfield Thermal Power Plant should dynamically adjust the power generation according to the load of the power grid and market demand, and carry out the transformation of the frequency converter and the suction fan. The motor was originally a 1600KW, 730RPM non-frequency variable speed motor matched by HangZhou Motor Factory. The speed control mode after changing the frequency is manual control. Press the button speed to increase 10RPM or drop 10RPM. The coupling is still the original elastic decoupling coupling, and the elastic de-coupling coupling after frequency conversion is frequently damaged, which directly affects the normal power generation.
It is found through analysis that in the process of frequency conversion speed regulation, the pin of the coupling can not bear the inertia of the speed regulation process (the diameter of the fan impeller is 3.3 meters) and is cut off, which has great damage to the motor and the fan.
Later, they switched to the JMB460 double-diaphragm wheel-type coupling of our factory (patent number: ZL.99246247.9). After 1 hour of destructive experiment and more than 1 year of operation test, the equipment is running very well, and there is no Replace the diaphragm. 12 units have been rebuilt and the operation is in good condition.
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How to Select the Right Motor Coupling for Specific Torque and Speed Requirements
Selecting the right motor coupling for specific torque and speed requirements is crucial to ensure efficient power transmission and avoid premature failure. Here are the steps to help you make an informed coupling selection:
- Identify Torque and Speed Requirements: Determine the maximum torque and speed (RPM) demands of the driven equipment. Torque is typically given in pound-feet (lb-ft) or Newton-meters (Nm), while speed is measured in revolutions per minute (RPM).
- Consider Service Factor: Factor in the service conditions and potential overload situations to calculate the required torque capacity of the coupling. The service factor is a safety margin applied to the calculated torque to ensure the coupling can handle occasional peak loads or unexpected shock loads.
- Define Misalignment: Assess the potential misalignments that may occur between the motor and driven shafts. Determine the angular, parallel, and axial misalignment expected during operation.
- Choose Coupling Type: Based on the torque and speed requirements, as well as misalignment considerations, choose the appropriate coupling type. Different coupling types, such as elastomeric, grid, gear, or disc couplings, offer various torque capacities and misalignment capabilities.
- Material Selection: Consider the environmental conditions and the properties of the materials used in the coupling. Factors like temperature, chemical exposure, and corrosion resistance should be taken into account when choosing coupling materials.
- Check Size and Dimensions: Ensure that the selected coupling’s size and dimensions are compatible with the motor and driven equipment’s shaft sizes and connection requirements.
- Consult Manufacturer’s Catalog: Refer to the manufacturer’s catalog or coupling datasheets for detailed technical information, torque-speed curves, and misalignment data to match your specific application requirements.
- Factor in Cost and Longevity: Evaluate the cost-effectiveness and expected service life of the coupling. A higher initial investment in a high-quality coupling may result in longer service life and reduced maintenance costs in the long run.
- Seek Expert Advice: If you are unsure about the best coupling for your application, consult with coupling manufacturers or industry experts who can provide recommendations based on your specific requirements.
By following these steps and carefully evaluating your torque and speed requirements, as well as misalignment considerations, you can select the right motor coupling that ensures reliable and efficient power transmission in your mechanical system.
Can motor couplings handle reversing loads and shock loads effectively?
Motor couplings are designed to handle various types of loads, including reversing loads and shock loads, effectively. Let’s explore their capabilities in dealing with these load conditions:
1. Reversing Loads
Reversing loads occur when the direction of the transmitted torque alternates periodically. Motor couplings, especially flexible couplings and universal couplings (Hooke’s joints), are well-suited for handling reversing loads. These couplings can accommodate angular misalignments between the motor and driven load, allowing for smooth torque transmission even during direction changes. Properly aligned and maintained couplings can endure frequent reversals without significant wear or fatigue.
2. Shock Loads
Shock loads refer to sudden and intense forces that exceed the typical operating conditions. These loads can occur due to abrupt starts, stops, or impacts in the system. Motor couplings, particularly those with some level of flexibility, possess inherent shock-absorbing properties. Flexible couplings can dampen the impact of sudden loads, reducing the stress on connected components and preventing damage. Rigid couplings are less forgiving to shock loads but may still be suitable for certain applications where the impact is within their load-bearing capacity.
However, it’s essential to consider the specific application requirements and choose the appropriate coupling type based on the expected load conditions. Factors such as the magnitude and frequency of reversing and shock loads, system dynamics, and the overall design should be considered when selecting a motor coupling. Additionally, regular maintenance and inspection play a crucial role in ensuring that the couplings continue to perform effectively under challenging load conditions.
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Advantages of Using Grid Couplings in Industrial Machinery and Equipment
Grid couplings offer several advantages in industrial machinery and equipment applications, making them a popular choice for power transmission systems. Some of the key advantages include:
- High Torque Capacity: Grid couplings have a high torque capacity, allowing them to transmit significant amounts of torque between shafts. This makes them suitable for heavy-duty industrial applications that require substantial power transmission.
- Misalignment Tolerance: One of the primary benefits of grid couplings is their ability to accommodate misalignments between the connected shafts. They can handle both angular and radial misalignments, reducing stress on the machinery and extending component life.
- Vibration Damping: The serrated grid element in grid couplings acts as a vibration damper, absorbing shocks and vibrations that can occur during operation. This feature helps in reducing noise levels and ensuring smoother machinery performance.
- Shock Load Absorption: Grid couplings are designed to absorb shock loads, which are common in industrial environments. This capability protects the connected equipment from sudden overloads and prevents damage to the machinery.
- Torsional Flexibility: The flexible grid structure of the coupling provides torsional flexibility, allowing it to compensate for torsional vibrations and torque spikes. This feature contributes to improved system stability and reduced stress on components.
- Easy Installation and Maintenance: Grid couplings are relatively easy to install, making them a convenient choice for machinery assembly. They also require minimal maintenance, resulting in cost savings and reduced downtime for equipment servicing.
- Wide Range of Applications: Grid couplings are versatile and suitable for various industries, including mining, pulp and paper, steel mills, and power generation. They are employed in pumps, compressors, fans, conveyors, mixers, and other industrial equipment.
- Cost-Effective: Considering their durability, misalignment tolerance, and low maintenance requirements, grid couplings offer a cost-effective solution for power transmission needs in industrial settings.
Overall, grid couplings provide a robust and reliable means of transmitting power between rotating shafts while protecting machinery from adverse conditions. Their ability to handle misalignments and dampen vibrations makes them a valuable component in a wide range of industrial applications.
editor by CX 2023-08-15