RU126319U1 - STEERING COLUMN - Google Patents

Abstract

A propulsion and steering column comprising a balloon, a nacelle mounted on the balloon, a propeller mounted on the propeller shaft, and a column rotation mechanism, characterized in that the propeller shaft is rotated by a hydraulic motor docked to the nacelle and hydraulically connected by pipelines to the pump forcing, placed inside the baller.

Description

The utility model relates to shipbuilding and can be used in active control devices that ensure the creation of the ship's thrust and change of thrust direction.

Known screw propulsion, including a hub, on the outer surface of which the blades are mounted, and a propeller shaft connecting the propulsion with a marine engine (see P.V. Orekhov, BC Murugov "Propellers of adjustable pitch", VINITI, Moscow, 1961, p. .53). A disadvantage of the known propeller propulsion is the impossibility of its use in propulsion and steering systems.

The closest in technical essence and the achieved result to the claimed technical solution is a propulsion-steering column (DRC) containing a balloon, a nacelle mounted on a balloon, a propeller mounted on a propeller shaft, and a column rotation mechanism (see RF patent for utility model No. 114662, B63H 3/00, 2012). The disadvantage of this propulsion-steering column is the unsatisfactory mass-dimensional characteristics of the DRC and the relatively low life of the column when operating in extreme conditions. The fact is that the known propulsion-steering column contains an angular gearbox, which consists of a set of gears, and a vertical power shaft located inside the baller. The introduction of these nodes in the design of the DRC leads to an increase in both overall and mass characteristics. In addition, when the well-known DRC is operating in extreme conditions, for example, in ice conditions, the angular gearbox experiences shock loads, which lead to increased power moments that cause increased wear of the angular gearbox, which ultimately reduces the life of the DRC.

The purpose of this utility model is to improve the mass-dimensional characteristics of the DRC and increase the life of the column in extreme conditions.

This goal is achieved by the fact that in the known propulsion-steering column comprising a baller, a nacelle mounted on a baller, a propeller mounted on the propeller shaft, and a column rotation mechanism, in which the rotation of the propeller shaft is carried out using a hydraulic motor docked to the nacelle and hydraulically connected with a discharge pump by pipelines located inside the balloon.

The use of a hydraulic motor in the DRC makes it possible to abandon a number of units in the column design: an angular gearbox, a vertical power shaft, and bearings for these units. The torque generated on the output shaft of the hydraulic motor is created by supplying hydraulic fluid to the hydraulic motor under pressure, and for this it is necessary to add only pipelines to the DRC design that do not take up much space. The injection pump itself may be located outside the DRC, for example on board a ship. All this allows to significantly improve the mass-dimensional characteristics of the propulsion-steering column. In addition, the hydraulic motor well perceives shock loads, which are perceived by the propeller and transmitted further to the propeller shaft and the shaft of the hydraulic motor.

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

1 - column base;

2 - baller;

3 - gondola;

4 - propeller;

5 - propeller shaft;

6 - a protective shell;

7 - hydraulic motor;

8 - pipelines;

9 - rotary coupling;

10 - drive motors.

The engine-steering column consists of a base 1 and a balloon 2, inside of which pipelines are placed 8. A nacelle 3 is mounted on the balloon 2, in which the propeller shaft 5 is located, at the end of which the propeller 4 is located. The propeller is protected from external factors by a protective shell, which is attached to both the nacelle 3 and the ballon 2. A hydraulic motor 7 is attached to the nacelle 3. The hydraulic motor shaft is connected to the propeller shaft 5 inside the nacelle 3. At the top of the DRC there is a column turning mechanism, which consists of drive wheels Gates 10 and the rotary coupling 9, which is mounted on the baller 2.

The steering column operates as follows. When a working fluid is supplied through pipelines 8 under pressure to a hydraulic motor 7, a torque is created on the shaft of the latter. The hydraulic pump creating pressure in the working fluid is not shown in the figure. The torque from the shaft of the hydraulic motor 7 is transmitted to the shaft of the propeller 5 and then to the propeller itself 4. The DRC is rotated to change the thrust vector using drive motors 10, which, through the rotary clutch 6, make the rotator 2 rotate.

The use of the proposed propulsion-steering column allows to improve the mass-dimensional characteristics of the DRC (by 30-35%) and increase the life of the column in extreme conditions, for example, ice.

Claims (1)

A propulsion and steering column comprising a balloon, a nacelle mounted on the balloon, a propeller mounted on the propeller shaft, and a column rotation mechanism, characterized in that the propeller shaft is rotated by a hydraulic motor docked to the nacelle and hydraulically connected by pipelines to the pump forcing, placed inside the baller.

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