RU181153U1 - Steering column with adjustable pitch propeller - Google Patents

Abstract

The utility model relates to propulsion shipbuilding systems, in particular to propulsion and steering columns with an adjustable pitch propeller. The propulsion and steering column with an adjustable pitch screw consists of a housing, a drive, a shaft line, a propeller with a mechanism for turning its blades, driven through a hollow rotor of the electric motor and a shaft shaft coaxial with it, a non-rotating rod pusher of the rocker mechanism for changing the blade pitch, by means of a helical gear and gears from a separate drive of the step change mechanism. 1 ill.

Description

The utility model relates to propulsive shipbuilding systems.

Known are traditional designs of propulsive systems in which the vessel is set in motion by means of a screw connected through a shaft shaft to a drive [1].

The disadvantage of such designs is the poor maneuverability of the vessel.

Partially this drawback is deprived of the design of the propulsive system, which is a propulsion-steering column with one screw, which has the ability to ensure the maneuverability of the vessel due to the possibility of rotation of the column and, therefore, the thrust vector within 360 ° [2, 3, 4].

The disadvantage of this design is poor controllability of the propeller thrust and negative dynamic processes in the drives during transient changes in the speed of the vessel.

The design of the propulsive system with an adjustable pitch of the propeller [5], in which the step is controlled by a control rod located in the hollow part of the shaft, and a hydraulic cylinder, the rod of which is kinematically connected to the control rod by means of a lever connected with the control rod through the earring, is partially deprived of the design .

The disadvantage of this design is the complexity and large dimensions, which is difficult to implement in propulsion-steering columns.

Partially indicated drawback is deprived of the design of the propeller with rotary blades [6], which is a prototype and contains a shaft with a hub located on the base, rotary blades, worm gears, electric motors, and the rotors of the electric motors are installed symmetrically around the circumference of the hub and are equipped with a common circular stator.

The disadvantage of this design is its complexity, low reliability associated with a large number of individual drives on each blade, which, as you know, increases the likelihood of failure during operation.

The task to which the utility model is directed is to simplify and increase the reliability of the design of steering columns with adjustable pitch propellers.

This is achieved by the fact that the drive is made in the form of an electric motor, through the hollow rotor of which and the shaft shaft coaxial with it passes a non-rotating rod-pusher of the slide of the rocker mechanism for changing the pitch of the blades, driven by a screw drive and gears from a separate drive of the pitch changing mechanism.

In FIG. 1 shows the design of the propulsion-steering column with a pitch change mechanism for the propeller blades, consisting of a housing 1, an electric motor 2, a rotor 3 of which is rigidly fixed to the shaft of the propeller 4, a slider 5 of the rocker mechanism located in the hub of the propeller 6 with the ability to rotate around its axis by blades 7, connected to the slider, by means of a bearing assembly 8, a pusher rod 9, the threaded end 10 of which is fixed against rotation by the sleeve 11 and forms a helical (preferably roller-screw) gear nut 12, which is installed in the bearing assembly 13, mounted in the column housing, the nut is connected via a gearing (gear) 14 to an electric motor 15 equipped with a normally closed brake 16, the axial movement of the push rod, and therefore the angle of rotation of the blades is monitored by the sensor 17 .

The mechanism is as follows. With the engine 15 turned off and the brake 16 closed, the nut 12 does not rotate, respectively, the rod-pusher 9 does not move in the axial direction, so the pitch of the blades 7 is fixed; when the brake 16 is opened and the motor 15 is turned in the forward direction, the nut 12 starts to rotate and moves the push rod 9 and the associated slider 5 forward, decreasing the angle of rotation (pitch) of the blades 7, when the desired angle of rotation (pitch) of the blades is determined sensor 17, the engine 15 is turned off, and the brake 16 is closed; if necessary, increase the angle of rotation (pitch) of the blades 7, the motor 15 rotates in the opposite direction.

The proposed technical solution is new: the prototype is used as an electric motor drive, through the hollow rotor of which and the shaft shaft coaxial with it passes a non-rotating rod-pusher of the slide of the rocker mechanism for changing the pitch of the blades, driven by a helical gear and gears from a separate drive of the mechanism step changes.

Information sources:

1. Hoffman A.D. Propulsion and steering complex and maneuvering of the vessel. L .; "Shipbuilding", 1988, 360 pp .;

2. Patent for utility model RU 114662;

3. www.roils-royce.com;

4. www.schottel.com;

5. Patent RU 2457147;

6. Patent RU 2387573.

Claims (1)

An engine-steering column with an adjustable pitch screw, consisting of a housing, a drive, a shaft drive, a propeller with a mechanism for turning its blades, characterized in that an electric motor is used as a drive, through which a rotary ram pusher passes through a hollow rotor and a shaft shaft coaxial with it a rocker mechanism for changing the pitch of the blade, driven by a helical gear and gears from a separate drive of the mechanism for changing the pitch.

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