The working principle and application effect of coupling

Coupling is an important component of mechanical and electrical equipment, improper selection will affect the operation of equipment, and even cause equipment failure. Coupling selection must be based on equipment performance (power, speed, shock, vibration, load changes, the drag system requirements), the working environment (temperature, environment humidity), and many other factors, on the basis of scientific, reasonable, applicable, economic principle, choose the applicable field coupling, for equipment of high efficiency and stable operation of laying a good foundation. The coupling will not appear output shaft sleeve keyway and key damage phenomenon, no noise, no vibration, no impact, the operation indicators are normal, equipment failure rate significantly reduced. And the peak torque of the coupling is lower than the overturn torque of the motor, to protect the motor from overload, if overload or even "stuck", it can unload itself, so as to protect the motor and the transmission mechanism.
The coupling is used to connect the prime mover shaft of mechanical and electrical equipment with the slave motor shaft, driving the normal operation of the equipment, and has the required ability to compensate the offset of the two shafts; Conclusion by coupling characteristics: airbags clutch, hydraulic coupling, centrifugal coupling has overload protection, but the centrifugal coupling and airbag clutch don't have the ability to absorb the impact load and conditions (centrifugal coupling has proved cause equipment damage), so the selection of hydraulic coupling as FP5012 crusher new coupling device in addition coupling is slow Damping performance, can reduce mechanical transmission system vibration, reduce impact peak load. Reasonable selection of mechanical and electrical equipment coupling is of great significance to improve the reliability of coal mine mechanical and electrical equipment, equipment availability, reduce the probability of forced outage of equipment, reduce maintenance costs and prolong the service life of equipment.
The working principle of the coupling: the prime mover rotates the arm to rotate, and the arm is thrown outward under the action of centrifugal force. With the increase of the motor speed, the positive pressure of the friction wheel of the three centrifugal friction blocks installed on the arm is also increasing, and the friction torque is gradually increasing and driving the load. Under the condition of serious overload or blocked rotation, the torque at the load end is greater than the friction torque, and the centrifugal friction block is subjected to a reduced centripetal force, which leads to a reduced force on the slider, and the coupling plays a role of overload protection. When the equipment load increases or decreases sharply, the friction block and friction wheel produce intermittent relative movement, thus forming alternating impact load, repeatedly impact coupling output end of the shaft sleeve and the input shaft of the reducer with the joint surface, as the heavy hammer head countless times to hit the joint surface, thus damaging the joint surface, the key pin. In order to effectively improve the operating conditions of equipment, it is necessary to change the connection device of electromechanical equipment.