Disc spring type vibration attenuation thrust bearing

Abstract

The invention discloses a disc spring type vibration attenuation thrust bearing which comprises a shell body and a thrust shaft, bearing bushes are arranged on both sides of the shell body, the thrust shaft is supported in the bearing bushes of the shell body, a thrust ring is arranged on the thrust shaft, thrust block groups, thrust support rings and washers are symmetrically arranged on both sides of the thrust ring. The disc spring type vibration attenuation thrust bearing is characterized in that a ring-shaped dovetail groove with an opening is arranged at one end of the thrust support rings, the thrust block groups are arranged in the ring-shaped dovetail groove in a clamping mode and distributed in a ring shape, through holes are formed in the ring-shaped dovetail groove of the thrust support rings at intervals, thrust block supports and disc spring groups are arranged in the through holes, the outer ends of the thrust block supports are tightly close to the thrust block groups, the inner ends of the thrust block supports are configured with the disc spring group and gaps are reserved between the thrust block supports and the washers, and the washers are fixedly connected with the inner end of the shell body. The vibration attenuation disc spring groups are arranged so as to reduce longitudinal rigidity of a shaft system, enable longitudinal inherent frequency of the shaft system to be reduced, stagger resonance with a propeller, and decrease transmission of longitudinal vibration of the shaft system.

Description

technical field [0001] The invention relates to a thrust bearing, in particular to a disc spring type damping thrust bearing. Background technique [0002] Thrust bearing is an important equipment of ship propulsion system. It transmits the forward and reverse torque of the propulsion motor to the propeller, and transmits the thrust and pull generated by the propeller to the hull to propel the ship to sail. Since the propeller rotates in the uneven flow field, the generated thrust has an alternating component of a certain frequency, forming a longitudinal vibration excitation force, which is easily transmitted to the hull through the shafting-thrust bearing, causing the hull to vibrate. [0003] The existing domestic thrust bearings for ships are generally composed of forward thrust blocks, reverse thrust blocks, thrust shafts, thrust balance mechanisms, supporting bearings, upper and lower shells, and oil inlet and outlet pipelines. The thrust bearing of this structure has...

AI Technical Summary

Problems solved by technology

The thrust bearing of this structure has high longitudinal rigidity, which makes the longitudinal natural frequency of the shafting system relatively high, which is easy to resonate with the excitation force of the propeller and increases the vibration transmission to the hull.

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