Shenyang Shenke Power Machinery Co., Ltd.

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What is the effect of loose coupling bolts?

Release Time:

2021-09-15

When using the coupling, if the coupling bolt is loose or slips out, the normal operation of the mechanical equipment will be affected. Next, what are the effects of loose coupling bolts?

When using the coupling, if the coupling bolt is loose or slips out, the normal operation of the mechanical equipment will be affected. Next, what are the effects of loose coupling bolts?

Coupling is the equipment active shaft and driven shaft firmly connected together to rotate, coupling torque transmission in three ways, bolt transmission, coupling joint surface friction transmission, the first two ways are. In the transmission process using the first two transmission methods, the torque of each bolt should be uniform, so that the force transmitted by each bolt is equally increased or decreased during the load change process.

Coupling only exists two bolt tightening, the female bolt shear force is equal, then the coupling only has torque, if the two bolt shear forces are not equal, then in addition to the torque, there is also a force acting on the center of the rotor, this F changes with the load of the unit, so the vibration of the unit is also realized to change with the load change. In addition to F, bolt loosening causes a change in the position of the two halves of the wheel, a deviation in the mass center of the coupling, and the emergence of a new additional unbalanced mass, which creates an additional unbalanced force, which manifests itself as a vibrational surge. The wrong port of the right wheel changes with the load change, so the unit vibration one also appears to be a sudden rise with the load change.

In the coupling industry, often due to the loosening of the fasteners caused premature damage to the coupling, resulting in major economic losses, so the coupling manufacturers will choose the appropriate fastener locking method for them, which is a major measure for the long-term, reliable and trouble-free operation of the coupling. Therefore, in the process of purchasing couplings, we should pay attention to whether the locking method used by coupling manufacturers is appropriate, like the nut used on the diaphragm coupling, which generally uses a locking nut, and at the same time pay more attention to the installation and use process.