SU800027A1 - Propelling gear for ship - Google Patents

Description

(54) SHIP'S ENGINE

one

The invention relates to shipbuilding, namely to ship propulsion m.

 The Voith-Nider wing propeller is known, where the blades are set vertically and move in a circle, the angle of attack is constant i

Closest to the present invention is a ship propulsion unit containing blades with shanks mounted on a closed flexible tape tensioned on pulleys with driving and driven shafts 2.

The disadvantage of these devices is the inability to control the angle of attack of the blades.

The purpose of the invention is to provide control over the angle of attack of the blades.

The goal is achieved by the fact that the ship propulsion is equipped with leading and driven shafts with a vertical guide fixed on these shafts and horizontal guides rigidly attached to the ship's hull, each blade hinged on a movable support attached to a flexible tape with rollers interacting with horizontal guides, and the shank of the blade is equipped with a spring-loaded

a lever with a roller supported on a vertical guide with the possibility of reciprocating its movement into the distance of the driven and driving shafts,

Fig, 1 shows the device, view from the stern; Fig. 2 is the same, with the protective casing removed, top view / in Fig. 3 is the same, cross section along the drive shaft and fastening of the blades; Fig, 4 shows fastening of the guide on the drive and driven shafts and constructive control circuit blade, in FIG. 5, a diagram of the position of the blades creating a thrust on the propulsor depending on the position of the blade,

The device is mounted in the stern of the vessel and contains blades 2 of an aerodynamic profile, hinged on movable supports 3 with rollers 4 moving along horizontal guides 5 rigidly fixed on the hull 1 of the vessel.

The movable support 3 is fixed on a flexible closed tape 6, tensioned on two driving 7 and two driven 8 pulleys, spaced along their rotation shafts 9.

A spring-loaded lever 10 is pivotally attached to the shank of the blade 2, terminating in a support roller 11, which is constantly pressed against the vertical guide 12.

The guide 12 by means of sliding bearings 13 is fixed on the drive and driven shafts 9, while the sliding bearing keeps the directions through the pins 14 entering the grooves 15 located at the top and bottom of the longitudinal bore 16.

Control mechanisms for reciprocating movement, such as hydraulic cylinders 17, are hinged to the vertical guide 12, for example. Hydraulic cylinders 17 are circumferentially attached.

The device works as follows.

The torque from the main propellers mounted in the hull 1 of the vessel is transmitted through the drive propeller shaft 9 to the driving pulleys 7, and from them to the closed flexible levta b with the blades fixed to it 2. If there is an angle of attack on the blades, it will create a lift the force that will be transmitted through the horizontal supports 3 and the rollers 4 by the horizontal guide 5.

At the same time, the angle of attack of the blades 2 is controlled by reciprocating mechanisms 17, for example hydraulic cylinders, which move a vertical guide 12 along the shafts 9, the displacement of which away from the middle position causes the angle of attack of the blades to change due to constant contact with the guide roller eleven.

FIG. Figure 5 shows the position of the angle of attack of the working blades moving in the direction A depending on the position of the guide 12.

With an average (neutral} position of the guide 12 0-0 - the blades 2 have zero angle of attack, the propulsor does not create thrusters, at position 1-1 the guide is displaced to the extreme aft position, the angle of attack of the blades is maximum, the propeller creates thrust forward throughout the hydraulic section, at position 2-2, the guide is displaced to the extreme nasal position, the blades are installed with the opposite angle of attack, the propeller creates a backward movement; at position 1-2, the guide is installed in a skewed position, which is provided for fixing it in bearings 13 and having longitudinal holes 16 at its ends, while the blades located in the left part of the propeller create thrust forward, and in the right part back, and the vessel turns to the right, at position 2-1 opposite the skewed position, the left part of the engine creates a thrust. Back right - Forward and the vessel turns left.

The vessel is controlled by creating unidirectional thrust on the propulsion unit itself without the use of an additional steering device.

Claims (2)

1.Alferiev M.YA. Ship propulsion. L., Water transport, 1938, with. 608-610. 2. Holland Shipbuilding, April 1975. (put.J