Time : 2020-05-15 Browse : 25
As a key component connecting the driving shaft and the driven shaft of the equipment, the tightening state of the bolts of the coupling directly affects the stability of the equipment operation. Once the bolts are loose, a series of chain problems will be triggered, with the following specific effects:
I. Abnormal Vibration
When the coupling transmits torque, if the bolts are combined with the friction force of the mating surface, the loosening of the bolts will cause uneven shear force of each bolt. In addition to the normal torque, a variable force - F acting on the center of the rotor will also be generated. This force changes with the load of the unit, causing the vibration of the unit to fluctuate with the load. At the same time, the loosening of the bolts will change the relative position of the two half-couplings, causing the mass center of the coupling to shift, generating additional unbalanced forces, causing a sudden rise in vibration, and the degree of vibration will increase with the load change.
II. Accelerate Component Damage
Loose bolts will cause unstable coupling connection, causing impact and abnormal noise during transmission, and aggravating the wear of half-couplings, shaft systems and other components. Long-term looseness may cause bolt breakage, shaft system dislocation, and even premature damage to the coupling, which will lead to equipment shutdown and cause significant economic losses.
III. Impact on Transmission Reliability
Loose bolts cannot effectively transmit torque, which may cause the speed of the driving shaft and the driven shaft to be out of sync, affecting the normal working efficiency of the equipment. Under heavy load or variable load conditions, power transmission may be interrupted, causing production accidents.
To avoid the above problems, when purchasing couplings, you need to pay attention to the fastener locking method used by the manufacturer, such as the locking nut commonly used in diaphragm couplings. During installation and use, the bolt tightening status should be checked regularly, and loose problems should be dealt with in a timely manner to ensure long-term and reliable operation of the equipment.
