Marine caterpillar blade propeller

 

(57) Abstract:

The invention relates to propulsion to the ship. The inventive marine caterpillar blade propeller has blades, driven by two parallel circuits, each of which is stretched on two toothed wheels, separating the tape on the aft and fore part of the body for fixing the orientation of the blades is mounted on the rear of the tape blade and the attachment of the propulsion for the vessel is made in the form of a hinge with the possibility of changing the angular position of the mover relative to the longitudinal axis of the vessel in the horizontal plane. The invention is recommended for heavy-duty low-speed vessels. 4 Il.

The invention relates to shipbuilding, in particular the propulsion systems of ships.

Famous underwater propulsion, consisting of blades, driven by a moving chain, envelope two chain gears. The blades are perpendicular to the plane of these wheels and freely rotate around their axes, seated in the leading chain, and have their axes one Cam surface along the grooves on one side of propulsion (patent application UK N 2.031.828 B63H 1/34).

Jana tracked propulsion (jet traction generator) on the application for French patent N 2.534.636, B63H 1/34, Fig. 2, containing a vertically placed the blade 1, driven by two parallel chains 2, each of which is stretched on two horizontal gears 3, separating the tape feed 4 and the nose section 5, the authority to fix the orientation of the blades 6 and the mount propulsion to the vessel 7.

The lack of thruster body for fixing the orientation of the blades (installation site) 6 installed at the stern 4, 5 and nasal parts of the tape drives, as well as hingeless (hard) mount propulsion to the vessel 7.

The technical result is achieved by the fact that in the known marine caterpillar blade propeller body for fixation of the blades installed on the aft ribbon blades, and the mount propulsion to the vessel 7 is made in the form of a hinge with the possibility of changing the angular position of the mover relative to the longitudinal axis of the vessel in the horizontal plane.

These distinctive features of the prototype signs provide a positive effect in comparison with the similar.

In the specified mover (nearest equivalent) blades at an acute angle of attack and steady airflow flowing water, moving first from left to right (with respect to x is the device is deployed in a vertical plane two coaxial propellers, rotating in different directions and use only the reaction of the jets dropped the blades against movement of the vessel carrying power. Frontal same resistance is not used, it loads the thruster pair forces MX1X2trying to expand it around the center of gravity (clockwise).

The proposed efficient propulsion thruster prototype. As can be seen from Fig. 2, at the nearest analogue is used only reaction discarded blades of a jet carrying power. Frontal same resistance X of the blades creates a force MX1X2seeking to expand the propeller (clockwise) or to destroy it, which is the loss of energy in this way.

You need to make working the blade entirely gave the movement its full energy of interaction with water, the total hydrodynamic force, including the drag. For this purpose it is necessary to eliminate the action of the pair of forces in the known propulsion, leaving on one side the force of drag, aimed in the direction of propulsion. This can be achieved only by flokirovanie blades on the other side of the thruster. The drag of the blades on the pressure side of the propeller, being the geometric component of the pig.4). To obtain the same thrust directed along the longitudinal axis of the vessel, it is necessary to rotate the propeller clockwise by the angle between the lifting and the full hydrodynamic forces, while the blade has acquired, along with the movement from left to right, and at the same time to reduce the backward motion, i.e., the repulsion of water relative to the moving vessel, at the same time as the stop (thrust) is used not only drag X and not only lifting force Y of the blades, and their geometric sum of the total hydrodynamic force R (Fig.3). As can be seen from the figure, the blades are actually repelled from full hydrodynamic forces And R. any repulsion necessarily implies the existence of idling to make a new repulsive.

Compare the effectiveness of the known and proposed propulsion (Fig. 2 and 3). We denote the ratio of the total hydrodynamic force of the blade to its lifting force:

< / BR>
When the number of blades n mover France develops a thrust

T1=Yn< / BR>
as suggested:

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However, the proposed propulsion consumes half the power compared to the prototype, because it inhibited only one side of the blades, i.e., half of the blades. Here is digitalice twice the number of working blades of the proposed device, i.e., to bring their number to the number of workers (inhibited) blade propeller France.

Received draught:

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Will cross-correlate the received thrust:

< / BR>
T. O. thrust of the proposed propulsion at the same power consumption more thrust propulsion France in time. The ratio of the full hydrodynamic forces to podymow force the blades at high angles of attack can reach two.

In addition to increasing engine thrust can also use it as a steering wheel. The hinged connection of the propulsion unit to the transom allows you to rotate it so that the total hydrodynamic force was given the right, then the left-side component.

The invention is illustrated by drawings.

In Fig. 1 shows a hydrodynamic scheme propulsion analog; Fig. 2

hydrodynamic scheme thruster prototype of Fig. 3 hydrodynamic scheme proposed thruster of Fig. 4 hydrodynamic scheme thruster prototype when Troubleshooting a pair of forces and flygerian blades moving them to the right-to-left.

The invention implemented tracked bladed propeller.

Mover (Fig.3) consists of two pairs of gear wheels 1, raspolojeniea Cams, having the opportunity to be in the gap of the trench 4, is installed on the aft side of the thruster. In addition, the propulsion is provided with a vertical hinge 5 with the possibility of angular rotation of the propeller in the horizontal plane, consisting of a rod rigidly attached to the stern of the vessel by means of the bracket 6 and a sleeve rigidly attached to the mover and freely mounted on the rod. On the upper end of the sleeve is rigidly fixed to the rotary pulley, interacting with tensioners, coming from the steering column (on the devil. not shown). The driver also contains a drive in the form of an angular gear connected with the leading toothed wheel and pedal mechanism (photo not shown). Leading the drive shaft telescopically sliding.

Tracked propulsion works as follows.

Foot through the pedal, angular bevel gear, the drive shaft drives a gear wheel 1 and circuit 2. In the right position the blade, moving to the left, gets a fist in the air gap trench 4, settles at an acute angle to the line of motion, creating a draught of the vessel. After the trough, the Cam out of the gap of the gutter, allowing the blade to rotate freely around the longitudinal axis and fluorites relative to the longitudinal axis of the vessel in the horizontal plane is achieved by means of the hinge 5, secure the propeller to the stern of the vessel by means of brackets 6. The efforts of the hands from the steering column are transmitted through the cable and turning the pulley on the mover, who, while working, turns on the rod 5 of the mount propulsion to the vessel at the desired angle.

The alignment of the trajectory of the vessel is solved by turning the propeller clockwise by the angle b. As a result of this rotation, the total hydrodynamic force is directed along the axis of the vessel, and it moves right, but much further than the prototype. Furthermore, the physical nature of the use of drag is the appearance of repulsion of the blades relative to the vessel, i.e. the movement of the blades back simultaneously with the movement of the blade across the longitudinal axis from left to right. This simultaneous movement of the blades in two coordinates provides the use of a full hydrodynamic forces on subcritical angle of attack, i.e., in the best mode for smooth flow of the blades, which in turn causes a minimal loss of energy in the water and the greatest draught of the vessel. Thus, each of the blades of the propeller operates a fully hydrodynamic force directed parallel to the longitudinal axis of the vessel, while the Rota propulsion clockwise the ship is on an arc to the left. These turns the ship right and left at the respective turns of the propeller indicates that they are the result of full hydrodynamic forces of the blades.

The proposed method of movement in the water alternative propeller screw in the small range of speed of vessels, mainly in heavy slow moving vessels tankers, barges, ferries.

Marine caterpillar blade propeller, containing vertically spaced blades mounted on parallel chains interacting with the two horizontally spaced toothed wheels placed between the bow and stern parts of the tape that contains the bodies of fixing the orientation of the blades and mount propulsion to the vessel, characterized in that the body of fixing the orientation of the blades is mounted on the rear of the tape, and the mount propulsion to the ship in the shape of the hinge with the possibility of changing the angular position of the mover relative to the longitudinal axis of the vessel in the horizontal plane.

 

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