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What are the characteristics of elastic couplings
Couplings are used in precision machinery, as well as couplings for manipulation, control mechanisms and instrumentation equipment. The torque is very small. The main function is to connect two shafts and transmit motion. It requires high transmission accuracy and should have high torque stiffness. Generally, metal elastic elements are used to eliminate the angle transmission error caused by the relative torsion of the two halves of the coupling.
Various types of couplings have different functions and roles in the transmission system, but the common basic role is to transmit torque and motion.Therefore, the amount is relatively wide, such as: heavy machinery, metallurgical machinery industry, mining machinery, construction machinery, agricultural machinery, petroleum machinery, chemical machinery, lifting and transportation machinery, textile machinery, light industry machinery, printing machinery, automobiles, tractors, locomotives, Couplings are used in shafting transmissions of mechanical products such as ships, machine tools, water pumps, fans, and compressors, whose main function is to transmit torque.
With the development of industry and technology, flexible couplings have special functions in improving the working performance of the entire transmission system, ensuring the reliability of work, extending the service life of the equipment, reducing vibration, buffering, reducing noise, energy saving, and increasing transmission speed. , Is being recognized by more and more scientific and technological personnel.
Coupling is a device that connects two shafts or shafts and rotating parts, and rotates together without disengaging during the process of transmitting motion and power (torque). During the transmission process, the direction of rotation and the magnitude of the torque are not changed. It is the common function of all kinds of couplings.
The coupling is not allowed to have more than the specified shaft center line skew and radial displacement, so as not to affect its transmission performance.
In the daily maintenance of the coupling, if normal wear such as indentation is found, it should be replaced in time; the coupling is not allowed to have cracks, if there is a crack, it needs to be replaced (it can be knocked with a small hammer, judged by the sound); When disassembling and washing, turn the cross shaft 180° to achieve alternate use of the journal force.
Features of elastic coupling:
1. It can compensate the axis deviation. It not only has high elasticity in torsion, but also has elasticity in axial, radial and angular directions. It is easier to center during installation, and can compensate for the errors caused by the deformation of the hull and base after installation. , To ensure the normal operation of the diesel engine and shafting.
2. It can realize the vibration reduction of the machine base and the isolation of structure-borne sound and insulation current.After the diesel engine is equipped with a shock-absorbing base, relative vibration occurs between it and the shaft system. Only when an elastic ring coupling with elasticity in the axial, radial and angular directions is installed, can the reducer be installed under the main engine. Vibrate the base, and at the same time can isolate the structure sound and reduce the noise.Since the elastic ring coupling uses rubber components, it has good insulation performance and can prevent axial current.
3. It has high elasticity (low rigidity, large flexibility), the rotation angle is 10 degrees when bearing the nominal torque, and 25 degrees when the torque is applied. It can reduce the natural vibration frequency of the shaft system and change the torsional vibration characteristics of the diesel engine power unit shaft system. So that the diesel engine does not appear dangerous resonance speed within the required speed range.
4. It has good damping and vibration reduction characteristics, which can absorb part of the vibration energy, reduce the vibration amplitude when passing through the vibration point, and reduce the torsional vibration stress of the shaft section.
5. It can absorb and reduce the fluctuation of the output torque of the diesel engine. For the diesel engine power unit equipped with a reduction gear box, it can reduce the impact on the gear surface when the torque is changed, and prolong the service life of the gear.
Various types of couplings have different functions and roles in the transmission system, but the common basic role is to transmit torque and motion.Therefore, the amount is relatively wide, such as: heavy machinery, metallurgical machinery industry, mining machinery, construction machinery, agricultural machinery, petroleum machinery, chemical machinery, lifting and transportation machinery, textile machinery, light industry machinery, printing machinery, automobiles, tractors, locomotives, Couplings are used in shafting transmissions of mechanical products such as ships, machine tools, water pumps, fans, and compressors, whose main function is to transmit torque.
With the development of industry and technology, flexible couplings have special functions in improving the working performance of the entire transmission system, ensuring the reliability of work, extending the service life of the equipment, reducing vibration, buffering, reducing noise, energy saving, and increasing transmission speed. , Is being recognized by more and more scientific and technological personnel.
Coupling is a device that connects two shafts or shafts and rotating parts, and rotates together without disengaging during the process of transmitting motion and power (torque). During the transmission process, the direction of rotation and the magnitude of the torque are not changed. It is the common function of all kinds of couplings.
The coupling is not allowed to have more than the specified shaft center line skew and radial displacement, so as not to affect its transmission performance.
In the daily maintenance of the coupling, if normal wear such as indentation is found, it should be replaced in time; the coupling is not allowed to have cracks, if there is a crack, it needs to be replaced (it can be knocked with a small hammer, judged by the sound); When disassembling and washing, turn the cross shaft 180° to achieve alternate use of the journal force.
Features of elastic coupling:
1. It can compensate the axis deviation. It not only has high elasticity in torsion, but also has elasticity in axial, radial and angular directions. It is easier to center during installation, and can compensate for the errors caused by the deformation of the hull and base after installation. , To ensure the normal operation of the diesel engine and shafting.
2. It can realize the vibration reduction of the machine base and the isolation of structure-borne sound and insulation current.After the diesel engine is equipped with a shock-absorbing base, relative vibration occurs between it and the shaft system. Only when an elastic ring coupling with elasticity in the axial, radial and angular directions is installed, can the reducer be installed under the main engine. Vibrate the base, and at the same time can isolate the structure sound and reduce the noise.Since the elastic ring coupling uses rubber components, it has good insulation performance and can prevent axial current.
3. It has high elasticity (low rigidity, large flexibility), the rotation angle is 10 degrees when bearing the nominal torque, and 25 degrees when the torque is applied. It can reduce the natural vibration frequency of the shaft system and change the torsional vibration characteristics of the diesel engine power unit shaft system. So that the diesel engine does not appear dangerous resonance speed within the required speed range.
4. It has good damping and vibration reduction characteristics, which can absorb part of the vibration energy, reduce the vibration amplitude when passing through the vibration point, and reduce the torsional vibration stress of the shaft section.
5. It can absorb and reduce the fluctuation of the output torque of the diesel engine. For the diesel engine power unit equipped with a reduction gear box, it can reduce the impact on the gear surface when the torque is changed, and prolong the service life of the gear.
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