Damping device for axial vibration damping and noise reduction of shafting

Abstract

The invention discloses a damping device for axial vibration damping and noise reduction of a shafting. The damping device mainly comprises a damper main body and a bearing seat. According to the damping device, a stepping motor drives a rotating shaft to rotate, the rotating shaft is provided with a thrust plate, the axial vibration of the rotating shaft can be transmitted to the damper main bodythrough the thrust plate, hydraulic oil in a gap of the damper main body is subjected to extrusion, an oil film damping effect is formed, so that the axial vibration of the rotating shaft is reducedor weakened, and the damping device belongs to the technical field of vibration control. Two sets of damper assemblies are arranged on the left side and the right side of the thrust plate and are usedfor transmitting and absorbing vibration in the left direction and the right direction respectively. The damping device can be widely applied to the mechanical field with axial vibration, and has theadvantages of excellent vibration damping effect, compact structure and small installation space.

Description

technical field [0001] The invention mainly relates to a damping device for axial vibration reduction and noise reduction of a rotary machine, which is mainly used to solve the problem of axial vibration of the rotary machine in industries such as ships, chemical industry, and electric power, and belongs to the field of vibration control. Background technique [0002] For rotating machines that generate axial force during work, thrust bearings are usually used to withstand or transmit axial thrust, but when the axial force is unstable, axial vibration is often caused. Rotating machinery in shipbuilding, chemical industry, electric power and other industries all have axial vibration problems, such as propulsion shafting of ships, axial vibration is an important factor affecting its concealment. [0003] At present, there are mainly the following types of axial vibration control for rotating machinery shafting: the patent (CN 102937146A) transmits the axial vibration of the pr...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly the following types of axial vibration control for rotating machinery shafting: the patent (CN 102937146A) transmits the axial vibration of the propulsion shafting to the piston, so that the piston moves in the piston chamber, and the piston chamber is filled with hydraulic oil, which can Absorbing vibration; using the magneto-rheological elastomer's magneto-rheological stiffness characteristics to automatically track the external excitation frequency, it can achieve a certain vibration-absorbing effect and apply for a patent (CN 107191529A), but the magnetic permeability of the magnetorheological elastomer is relatively low , the working performance in complex environment is not stable enough

[0004] The above measures will cause the problem that the axial support stiffness of the propulsion shafting is too large or too small. If the stiffness is too large, the axial vibration of the shafting cannot be absorbed; if the stiffness is too small, the axial thrust cannot be transmitted.

Images