A new type of water lubricated rubber stern bearing

Abstract

The invention provides a novel water-lubricated rubber stern bearing. The inner-diameter part of the section of a bearing bush is a non-perfect circle composed of two semicircles which have the same radius but different circle centers, and the two semicircles are in arc transition; the outer-diameter part of the section of the bearing bush is a perfect circle. The radius R satisfies the equation that R=r+c-e / 2, wherein r represents the radius of the bearing, c represents the gap between the top of the bearing and the bearing bush, and e represents the distance between the circle centers of the upper semicircle and the lower semicircle. According to the novel water-lubricated rubber stern bearing, the inner-diameter part of the bearing bush of the bearing is designed into the non-perfect circle form, the horizontal gap of the bearing is smaller than the vertical gap of the bearing, and thus shafting rotating vibration can be reduced.

Description

technical field [0001] The invention belongs to the technical field of ship stern bearings, and in particular relates to a novel water-lubricated rubber stern bearing. Background technique [0002] With the increasing requirements for high load capacity and low noise performance of water-lubricated bearings such as ship shafting and underwater propellers, researchers have carried out a large number of research work on bearing structures and bearing materials in recent years. [0003] CN103788623A discloses a water-lubricated bearing with high bearing capacity and self-lubricating properties. The water-lubricated bearing is composed of synthetic polyurethane, solid lubricant and fiber reinforcing agent. When the bearing is in a water-deficient environment, it can exhibit excellent self-lubricating and wear-resistant properties, and can prevent noise and bearing seizure. CN102011796A discloses a marine self-aligning spherical water-lubricated stern bearing. The self-aligning ...

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Problems solved by technology

[0004] The above patents try to solve the problem of abnormal friction noise of ship bearings from the aspects of bearing structure and bearing materials, but the abnormal friction noise under low-speed and heavy-load conditions is mainly caused by the rotating vibration of the shaft system, and reducing the friction coefficient of bearing bushes cannot effectively solve this problem, while self-aligning The structure will change the supporting conditions of the shafting, but will affect the rotary vibration of the shafting

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