RU2489310C2 - Propulsion steering column - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to ship building and may be used in development of ship propulsion steering complex. Proposed propulsion steering column comprises spindle, nacelle, screw propeller and column turn drive. Spindle top is connected with hull, via thrust ball while its bottom is connected via thrust plate. Flexible rolls are secured at thrust plate.

EFFECT: higher column efficiency at extreme load, better weight-and-size characteristics.

1 dwg

Description

The invention relates to shipbuilding and can be used to create ship propulsion systems for the spatial movement of objects while ensuring their controllability.

Known propulsion-steering column, containing a baller, a vertical drive shaft, a bevel gear, a streamlined nacelle (fairing), a closing gear, a propeller and a rudder feather (see "Active Ship Management", Leningrad, Sudostroenie Publishing House, 1969) , p. 170). The disadvantages of the known device include the inability to provide high power devices due to the placement of the nacelle inside the steering wheel feather.

The closest in technical essence and the achieved result to the claimed technical solution is a propulsion-steering column containing a baller connected to the hull, a nacelle with a propeller mounted on it and a column rotation mechanism (see "Means of active control of ships", Leningrad, publishing house " Shipbuilding ”, 1969, p. 170, Fig. 131). A disadvantage of the known propulsion-steering column is its lack of performance under extreme loads on the column in the form of shock loads from ice formations or other foreign objects. Any impact on the column leads to the formation of significant bending stresses in the columns, which lead to a decrease in the operability of the structure.

The aim of the present invention is to improve the performance of the column under extreme load and improve its mass-dimensional characteristics.

This goal is achieved by the fact that in the known propulsion-steering column containing a balloon connected to the housing, a nacelle with a propeller mounted on it and a column rotation mechanism, the connection of the balloon to the housing is carried out in the upper part through the support ball, and in the lower part through the persistent a plate on which elastic rollers are fixed. In this case, the upper support can be combined with the column rotation mechanism. Introduction to the design of the propulsion-steering column of such supports can significantly increase the rigidity of the balloon. The load created by the propeller is transferred to the nacelle, through which it passes to the balloon and from it through the thrust plate (lower support) and the rollers are transferred to the ship's hull. Moreover, the distance from the axis of the screw to the location of the lower support is much smaller than in the known solution, which can significantly reduce bending stresses. The possibility of deformation of the elastic rollers, the amount of which is determined by the specific design of the propulsion-steering column (but not less than three), allows the baller to rotate at a certain angle, and this possibility is provided to the baller by the second, upper support, made in the form of a support ball. The use of a ball rather than a spherical bearing as the top support is caused by the layout of the rotation mechanism. The difficulty lies in the fact that when the rotation mechanism is placed at any distance from the axis of rolling of the balloon, the angle between the gear mounted on the balloon and the gear transmitting the moment to it from the electric motor increases. The combination of the upper support with the rotation mechanism of the column allows you to further increase the rigidity of the column structure, and hence its performance.

The proposed design of the steering column is shown in the figure with the following notation:

1 - baller;

2 - vertical drive shaft;

3 - bevel gear;

4 - streamlined gondola;

5 - propeller;

6 - propeller shaft;

7 - column rotation mechanism;

8 - case;

9 - upper support (reference ball);

10 - lower support (thrust plate);

11 - elastic rollers.

The propulsion-steering column contains a balloon 1. A vertical drive shaft 2 located inside the balloon 1 is connected to a bevel gear 3 located inside the streamlined nacelle 4. A propeller shaft 6 is also located inside the nacelle, on which the propeller shaft 5 itself is located. Connection 1 with the housing 8 is carried out through two supports: the upper support in the form of a support ball 9 and the lower support 10 in the form of a thrust plate, on the periphery of which elastic rollers are fixed 11. The rotation mechanism of the column 7 is combined in this case with the upper support 9.

The steering column operates as follows. From the driving motor (not shown), the torque is transmitted to the vertical drive shaft 2, which in turn transmits it through a bevel gear 3 to the shaft of the propeller 6 and to the propeller itself 5. In the process of the vessel moving in extreme conditions, the streamlined nacelle 4 is provided mechanical impact of various objects (for example, ice formations), which leads to the occurrence of significant bending stresses in the balloon 1. This load is transmitted through the baller 1 to the lower support 10, and through it to the elastic rollers 11, to the hull 8 and then to the hull (not shown). The elastic rollers 11 level the movements of the baller 1, which are possible due to the upper support 9 in the form of a support ball.

Using the proposed design of the propulsion-steering column allows you to significantly reduce the voltage on the balloon under extreme conditions of its operation, which in turn improves the performance of the column. Reducing the stresses on the column, in turn, makes it possible to make a baller with a smaller diameter and wall thickness, and this leads to an improvement in the mass-dimensional characteristics of the column.

Claims (1)

A propulsion and steering column comprising a balloon connected to the housing, a nacelle with a propeller mounted on it, and a column rotation mechanism, characterized in that the connection of the balloon to the housing is carried out in the upper part through the support ball, and in the lower part through the thrust plate, on which fixed elastic rollers.