SU1221060A1 - Propeller shaft bearing - Google Patents

Description

The invention relates to shipbuilding, in particular to propeller shaft bearings.

The purpose of the invention is to increase the durability and reduce the material consumption of the support.

FIG. 1 shows the propeller shaft support, cross section; in fig. 2 - plank, cross section; in fig. 3 - the same, longitudinal section.

The propeller shaft support includes strips 1 with a base 2, with which the sleeve surface is lined. The strip 1 on the base 2 side is made either with a longitudinal or transverse, or with a longitudinal and transverse groove 3. A groove 3 can be made of a different profile. The cavity of each groove 3 is filled with fluid under pressure and through channel 4 communicates with an annular cavity formed by the inner surface of the laths 1 and the lining of the propeller shaft 5. The diameter and spacing of the channels 4 of the laths 1 along the length of the groove 3 may be unequal and their size is necessary lubricant supply between the propeller shaft 5 and the bars 1 under extreme conditions.

In fact, the contact pressures perceived by the stern support, and especially the stern section of the stern support, are higher than the average calculated ones due to the deformation of the hull and the bending of the propeller shaft under the action of the cantilever propeller under operating conditions.

In order to increase the efficiency of lubricating oil, its cooling effect requires that the amount of water supplied under extreme conditions increases from the nose of the support and the feed as well as the contact pressure increases.

The support works as follows.

In the initial position, the grooves 3, channels 4 and the cavity formed by the inner surface of the laths 1 and the lining of the propeller shaft 5 are filled with water. When the propeller shaft 5 is rotated with the propeller mounted, due to the cantilever application of the load, unevenly distributed contact pressures arise on the support, causing deformation of the laths 1.

With an increase in the contact pressure, the addition of additional water from the slots 3 through the channels 4 to the friction zone increases. In addition, the strips 1, having an elastically deformed working surface, assume under pressure of the rotating propeller shaft 5 its shape, which contributes to the redistribution of the load along the length of the strips 1 and the entire support in the direction of leveling it.

The supply of additional water through the channels 4 to the middle (in width) part of the slats 1 contributes to a better heat removal in the most loaded contact zone of the support, which increases the durability of the support.

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Compiled by A. Strokov

Editor L. Veselovska Tehred I. VeresKorrektor L. Patay

Order 1539/25 Circulation 422Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (2)

1. SUPPORT OF THE ROWSHAFT, containing a set of slats, the base of each of which is placed on the inner surface of the sleeve, and the inner surface is facing the facing of the propeller shaft, characterized in that, in order to increase the durability and reduce the material consumption of the support, each of the slats is on the base side made either with longitudinal, or with transverse, or with longitudinal and transverse grooves, and the cavity of each groove is filled with fluid under excessive pressure and communicated with the annular cavity formed by the inner the surface of the planks and the lining of the propeller shaft, at least in the area of the aft end of the support. 2. Support on π. 1, characterized in that the planks are made sectional in length. HMKllXJ.pM.lXltxL _/ SU „„ 1221060 FIG. 1