JPH026292A - Controllable fixed propeller - Google Patents

Abstract

PURPOSE: To realize a change in propeller pitch with less energy by providing a new holding part for a propeller blade in a hub so that the propeller blade can be fine adjusted. CONSTITUTION: A holdable and adjustable blade 4 is inserted into a propeller hub press-fitted to a propeller 1 through an opening at the front of a rear hub. The rotation of a propeller hub 3 is supported by a yoke guide 7, and a holdable and adjustable yoke 8 displaced in axial direction is engaged with a tapered groove 10 in a blade holdable and adjustable plate 4 through an adjusting pin and a sliding member 9. The holdable and adjustable yoke 8 is connected to a bushing 11 held with screws so that it is not displaced in axial direction. A worm gear 12 is installed on the bushing 11. A pulling device 15 is engaged with the lever of a pinion stem gear 13, and associated with an electromagnet device 20.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The invention relates to a one-piece or multi-part propeller hub fixed to a propeller shaft by a cylindrical or conical hub/shaft connection. and a controllably fixed propeller (CFP) whose propeller blades are rotatably held in the hub within a limited range of adjustment for the case of main northing of the ship. ) and includes adjustment and retention mechanisms for the retention of the propeller blades in the propeller hub, fine adjustment and fixation of the propeller broad, and the transmission of adjustment and control energy from the ship to the propeller hub.

Unlike controllable pitch propellers (CPP), which have blade rotation angles for full forward and reverse ranges, the present invention provides for effective utilization of mechanical power and for anti-fouling and aging, as well as for speed, draft and balance. Allows for economical adaptation of blade power and propeller speed due to different navigational and offshore conditions such as changes, or for adaptation to changes in special currents, waves and navigational conditions such as in river and glacial navigation. It is provided for adjusting and readjusting the forward blade pitch for forward main operation of the ship.

Prior Art Both for controllable pitch propellers (CPP) with full forward and reverse ranges, and for hitherto known solutions for controllable fixed propellers (CFP), the blades For blade retaining plates that are screwed onto the flange, propeller hubs are used which have a circular retaining arrangement inside the hollow propeller hub, thus protruding between the blade leg and the retaining plate. A circular bubbling section allows for rotatable retention.

The blade retaining plate has a generally groove-like recess on its inside, in which the retaining and adjusting forces are transmitted to the adjusting yoke via a single turnable sliding member and a pin. This hub with blade plate retention is suitable for full speed forward and reverse ranges and the arrangement of adjustment grooves and adjustment yoke in line with the straight propeller-blade axis makes the structure of the propeller-hub as a hollow body and the propeller-shaft with a coupling flange. subject to any coupling or additional supplementary parts for the hub-shaft coupling as well as the transmission of forces to the adjustment yoke.

Mounting an outer edge circular blade retaining plate within a hollow hub requires a correspondingly large front hub opening.

This also determines the diameter of the propeller.

Known proposals for a conical or cylindrical pressure-fit connection of hub and shaft and the condition of the blade surfaces in this connection area (East German Patent No. WP 243,479; East German Patent No. WP 248,334; East German Patent No. WP 248,335) , as well as the additional required space at the end of such a blade retaining plate, which results in a correspondingly larger hub diameter and larger hub volume. A further disadvantage of this rotatable retention of propeller blades with a blade retention plate and adjustment groove in line with the blade axis is the adjustment lever, whose length is limited by the hub interior space, which furthermore It changes with the rotational position of the shaft, and its short length requires a high holding or adjusting force.

Up until now, the hub and blade retainers used in full forward and reverse range controllable pitch propellers have been used in controllable fixed propeller designs. There is no known controllable fixed propeller-hub solution with reduced diameter and blade retention, whereby at the same time a considerable enlargement of the lever arm for retention and adjustment forces is achieved.

Furthermore, various publications are known which are aimed at simplifying the mechanism and reducing the adjustment forces for fixing the adjusted blade pitch, respectively.

For example, East German Patent No. WP200730 discloses an adjustment yoke longitudinally displaceable between blade retaining plates, in which one or more longitudinal grooves are provided in the area of self-locking at an angle. It is made in The holding or adjusting force for the displacement of the adjusting yoke is in this case transmitted from within the ship by means of a push rod located in the drilled propeller shaft.

According to East German Patent No. WP 225 400, it is also known to adjust the propeller blades of a fixed propeller controllably by means of an expansion joint fixed in the hub, which acts as an adjusting cylinder in the longitudinal direction. It is configured to be able to act on the formed adjusting yoke and is actuable by thermal action after release of the force fit. However, further investigations have revealed that this solution does not allow sufficient fine adjustment and reliable fixation of the propeller blades to be achieved.

Furthermore, unlike the supply of mu energy through a perforated propeller shaft, which is normally done with controllable pitch propellers, there is no control or regulation from the ship to the rotating propeller shaft or to the rotating propeller hub. Public literature is known that addresses other possibilities of energy transfer. In this proposal, a mechanical or electrical control signal is conveyed to the non-rotating or rotating propeller, in which case the regulating energy is taken from an energy accumulator in the hub or from a gravitational pendulum. or generated from rotational energy by other devices. However, to date it has not been possible to obtain sufficient reliability of circuit and conducting elements for many years of ship service without maintenance care.

Moreover, this system must include additional functional elements for blade pitch control (response). No proposals for a viable solution to this problem are known.

East German Patent No. WP 80634 proposes a device for transmitting energy between a ship and a hub in a controllable pitch propeller, which consists of an electromagnet excited by direct current and a rigidly arranged strong force on the hub side. It is made of magnetic material or has an electromagnetic disk or a box-shaped rotor. This system creates relative rotational motion between the propeller hub and the adjustment mechanism.

This is said to be used to adjust propeller blades. A disadvantage of this system is that additional means have to be provided for blade pitch control. This system is also not suitable for performing relatively small adjustment methods caused by slippage of the drive mechanism for the adjustment unit.

The object of the invention is to create a controllable fixed propeller which, on the one hand, has reduced thrust losses compared to a comparable fixed pitch propeller hub due to the reduced size and diameter of the propeller hub. on the other hand, by increasing the precision of the fine adjustment of the propeller blades an optimal adaptation of the propeller to the power parameters of the main engine is possible at any time during forward movement, and on the other hand
During many years of ship service, high reliability of the circuits and conduction elements for the ship's control and regulation energy in the hub is achieved without maintenance care.

This solution provides the possibility of a more economical way of operating the ship with respect to minimum fuel consumption, or also the optimum utilization of the engine power in the event of switching off auxiliary energy sources, such as, for example, an auxiliary generator mounted on the mainshaft; A propulsion engine is provided in which the possibility of optimal adaptation of the propulsion engine to the total available engine power is realized at the same time. By this, at the same time -temporally,
A high propulsion efficiency is achieved for achieving large accelerations, eg speed recovery.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a novel retention of propeller blades in the hub, which achieves a smaller external hub diameter compared to comparable controllable pitch propellers. and approximately equal to the hub diameter of a comparable fixed pitch propeller, and furthermore, a precisely adjustable and fixable holding and adjusting device t11 for fine adjustment of the propeller blades! ! All the holding moments and forces of the propeller plate are .

The aim is to create a controllable fixed propeller which is absorbed in continuous operation without any other energy, and which requires only little energy for pitch changes, and which allows for constant controllable optimum adjustment. . It is further an object of the invention that the control and adjustment energy is achieved without slip losses on the part of the drive mechanism for blade adjustment at the hub or without the need for additional mechanisms for pitch control of the propeller blades. , to find such a solution, which is guided from the ship to the hub on an electric or permanent magnetic path without contact.

According to the invention, this problem is addressed in the blade leg. Each rotatable propeller blade is confined within a propeller hub, each with a "blade retention fine adjustment plate"
is connected to a one-piece or multi-part blade retaining plate which is connected to an adjustment and fixing lever for the adjustment and fixing lever, and within the propeller hub, outside the area of the propeller blade retention in the propeller hub, its shaft or after that,
in particular on the rear or rear hub cover, or also on the front hub extension, an adjustment yoke is supported for rotation directly with respect to the hub, the hub extension or the hub cover, and is axially displaceable; This is engaged via a tA alignment pin guided in a tapered groove with the lever of the blade retention adjustment plate, and furthermore the adjustment yoke is rotatably held in the hub cover or hub extension by means of a screw connection. and a fine adjustment cylinder or a centrally located holding and adjusting spindle of the adjusting yoke, the holding and adjusting spindle being held by the hub, hub extension, or hub cover;
It is connected to a gearing mechanism of a high-ratio automatic rotor, such as a worm gear, and this gearing mechanism is further provided with a stepping mechanism oriented substantially parallel to the axis of the propeller shaft, which can be actuated electromagnetically or with a permanent magnet. The solution is that this is operatively coupled without contact to an electromagnetic or permanent magnetic pulse transmitter which is non-rotationally arranged on the hull.

The use of such an energy transfer system also provides a controllable propeller, since the number of switching steps is proportional to the rotational angle adjustment of the propeller blades.
Benefit from blade monitoring.

Preferably, the blade retention adjustment blade is arranged in the region of the retention part in the plate hub, the long main axis and the plane forming the retention part being in the main load plane of the propeller blade consisting of forward and reverse movement, and the transverse axis being in the propeller blade. It has a contour different from, for example, a flat-sided circular shape, so as to be reduced to the diameter of the blade leg opening in the hub. The orientation of the adjustment and locking levers of the blade adjustment plate also corresponds generally to the long main axis as well. The end of the adjustment and locking lever is provided with a pin or a groove suitable for receiving a pin or slide ring, and the length of the lever arm is such that the lever arm extends beyond the blade holding adjustment plate during all fine adjustments. It is designed to be greater than half the width, or greater than the blade leg radius, and rotatable over a predetermined fine adjustment range of about 4 degrees to 8 degrees.

In the force fit hub type, the propeller hub can be made in one piece or can consist of an internal hub and an external hub. In this case, the blade retention adjustment plate is supported on the inside on the internal hub and on the other side on the external hub, and the radial retention of the propeller blades is provided by blade flanges or centering rings. The blade retention adjustment plate can also be made of multiple parts so that it also receives radial retention.

Advantageously, the propeller blade leg with the blade retention adjustment plate is centered by a centering disc and, by means of a threaded connection and a rim bolt, the radial force is transferred directly from the propeller blade leg or onto the blade retention adjustment plate. or via the centering ring or distance piece between the propeller blade leg and the plate retention adjustment plate.
It is connected so that it can be transmitted to the hub. Centrifugal couplet rotational moments, retention and adjustment forces are transferred from the blade retention adjustment plate to the hub.

In hub/shaft connection versions with pressure fit.

The propeller-blade surface is within the hub/shaft connection, and the propeller-blade profile can be vertical or inclined to the hub axis aft at an angle, which angle is approximately the hub/shaft cone. corresponds to the angle of With the blade holding adjustment plate arranged parallel to the axis, the adjustment pin is cylindrical and in the inclined position is made as a ball pin.

If the blade retention adjustment plate has an adjustment groove in place of the adjustment pin, the groove is made obliquely to the shaft axis, for example at an angle of 15 to 25 degrees or less, in order to reduce the retention and adjustment force. .

Usually in controllable pitch propellers, a circular retaining disk determines, by its diameter and radial recess for blade fixation, the inner diameter of the hollow propeller hub and the size of the mounting opening and thus the outer diameter of the hub. Unlike the disc retainers used, the elongated blade retainer adjustment plate of the present invention allows for a large retainer or adjustment lever for a small hub diameter and limited g-adjustment range.

The radial retention of the propeller blades can be achieved by the type of hub/shirt 1 series, by the type of hub with external and internal hubs, or by the type consisting of one or other parts of the blade retention adjustment plate 1-. This is done by leg flanges or blade holding adjustment plates, or by centering rings or centering discs.

The blade holding and adjusting plate according to the invention is formed in such a way that, on its conductive surface, it has a maximum support width on the surface where forward and reverse forces are applied. The force under the blade retention adjustment plate is transmitted directly to the inner surface of the hub. Axial position of the mounting holes in the propeller blades 5 The blade diameter and the length of the internal support surface of the propeller hub are matched to each other to ensure that even the typically large loads that occur when reversing are absorbed. . The blade holding adjustment plate, which may be in one piece or in other parts, forms a unit with the adjustment lever and the adjustment pin or adjustment groove. Due to the position of the adjustment lever part in front or behind the blade leg, the length of the lever is not limited by the radius of the blade leg, as in the case of propeller hubs with retaining discs;
The larger one, for example, has twice the length. Due to the blade holding adjustment plate with the adjustment lever, the adjustment pin or the adjustment groove and their arrangement in the hub, the adjustment pin maintains a large diameter or adjustment groove, large width, thereby reducing stress and wear.

There is a rotatable sliding member on the adjustment pin or in the inclined groove of the blade holding adjustment plate, which slides into the inclined groove upon axial displacement of the adjustment yoke. The size of the sliding surface,
In addition, the height and width of the sliding member are adapted to the width and contour of the adjusting lever in such a way that the adjusting lever can be operated freely into all operating positions and is restricted in the final position. The direct transmission of the rotational force of the adjustment yoke directed to the long lever of the blade retention adjustment plate and the rotation of the propeller hub extension or hub cover and the oblique angle inclined at an acute angle of e.g. 15 to 25 degrees with respect to the longitudinal axis. By means of the sliding grooves, a reduction in the forces for fixing and adjusting the blade pitch is achieved, for example up to 1/6 of the forces in the case of a hub of a comparable controllable pitch propeller with blade retaining disks.

A further reduction in the adjustment force is according to the invention.

This is possible by a threaded connection between the adjustment yoke and a rotatable holding and adjusting cylinder or holding and adjusting spindle carried on the shaft, hub, hub extension or hub cover.

A fourth reduction stage is enabled according to the invention by the arrangement and connection of the worm gear and the holding and adjusting cylinder or the holding and adjusting spindle.

For new or readjustment of the blade pitch, the adjustment cylinder or adjustment spindle must be adjusted, preselected,
A rotating device belonging to a pitch indicating device, which consists of a worm gear, a worm worm and a one-way back gear sliding pinion and stem gear, or a corresponding toothed or grooved wheel, The tension or thrust device is rotated by a predetermined angle per stroke.

In a rotary device with a worm, the pull rod or raking device engages the pinion and stem gear so that the direction of rotation is opposite, thereby increasing pitch or increasing the pitch, depending on which pull rod is actuated. A pitch reduction is performed.

In devices consisting of a helical gear or an adjusting wheel with a helical groove, the adjusting screw spindle is likewise rotated from side to side by a designed angle by means of a corresponding opposite tilt and engagement of the respective pulling device.

The adjustment pull device or thrust device is guided in the controllably fixed propeller hub up to the area in front of the front hub and, in flanged hubshaft connections, in the hull of the propeller shaft or It reaches the area on the flange side facing the stern tube outlet or tailshaft bracket. The two pulling devices are connected on the side of this hub or on the side of the shaft flange to permanent magnets of opposite polarity such that they are kept in a stationary position or returned by the force of the spring. In conjunction with a water-tight and oil-tight cover of non-magnetic material on the hub or shaft flange, the axial movement of the permanent magnet and the pulling device compensates for displacements during reliable protection during ship operation.

The invention furthermore provides that a non-rotating one-piece or multi-part electromagnetic device is fixedly arranged in the stern member of the hull or in the till shaft bracket, which is arranged in a non-rotating one-piece or multi-part electromagnetic device, which Depending on the location, it may be mounted at a spacing and at a non-contact distance to the permanent magnet cover instead of at the rear of the rope protection and/or stern tube sealing.

No current flows through electromagnetic devices during continuous operation.

The residual magnetism is kept small by appropriate material selection or polarity conversion. To prevent corrosion, the coils may be coated with resin and the device may be terminated with a non-magnetic material on the side facing the propeller.

The supply of electrical energy is provided by I! 11 via a pre-pre selector and indicating device, by which the direction of the current for pitch increase/decrease is changed, and the number of switching steps in each direction is pregiven and indicated, and the respective The blade pitch adjustment is carried out both at rest and at the respective rotational speed, in which case the direction of the respective current in the coil on the magnetic field attracts the permanent magnet group arranged in the direction of the current, and the other is repelled or placed in the initial position.

The layout of the permanent magnets and the electromagnetic device can be adapted to the respective propeller size and adjustment power as well as the supply voltage, as well as the current strength.

Depending on the choice of the rest position of the carrier, the force transmission and the permanent magnet device, the pulling device can attract first with a low force and finally with a strong force, or the thrust device can attract first with a strong force and finally with a weak force. can be activated.

When the use of permanent magnets is carried out on the ship's side, two or more pairs of permanent magnets are attached to the propeller for this LJ purpose.
It is arranged to be displaceable in the axial direction with respect to the shaft. 1
Each pair contains two alternately polarized permanent magnetic fluxes.

In the rest state, the two magnets are out of their field of action.

When the propeller blade is adjusted, depending on the direction of adjustment, one of these magnets comes into the wireless current field, ie close to the hub.

Thus, when the hub rotates, each magnetic power pulse is transmitted to a permanent magnet in the hub, as in the case of an electromagnet.
Adjustment operations are thereby performed. Reversal of the adjustment direction is carried out by changing the side magnet adjustment.6 When the propeller is stationary, the adjustment can also be carried out by several axial displacements (symbolic pulsations) of the side magnet. can.

The function and design principle of a controllable fixed propeller is:
After the ship has achieved any steady forward state and recorded the values of ship speed, thrust, rotation, moment and rotational speed achieved in that case, the large or small blade pitch is 1 e.g. ±0.05 degrees to 0. .developed in such a way that it can be adjusted in small steps of 1 degree, without changing anything else, during the ship's operation and engine operation, and therefore for constant or quasi-constant engine conditions, a small step width; The change in thrust corresponding to the pitch change is recognized and the direction for optimization is provided. Each adjusted pinch is securely fixed during ship operation, so there is no independent change.

During operation without changing pitch, no regulating or holding energy is supplied to the propeller, and the moving parts of the regulating device are not in mechanical frictional contact, resulting in a low-wear structure for use during the life of the ship. It is formed.

For large or small pitch readjustments, there is a separate circuit or switching device for changing the current direction, respectively.

Depending on the direction of the current, the switching of one of the two electrical circuits or of each of the individual electrical circuits can be carried out by an adjustment step, e.g. 0.0
Same magnitude increases and decreases in blade pitch from 5 degrees to 0.1 degrees are made. The newly adjusted pitch is then fixed again. With the preselection device, many adjustment steps can be carried out automatically one after the other, so that the adjustment steps are thereby increased. Automatic recording of the switching indicates the respective blade position so that certain adjustments can be repeated.

The controllable fixed propeller design is larger than a fixed pitch propeller but smaller than a comparable controllable pitch propeller due to the special retention of the limited rotatable blade retention plate. Also results in a smaller hub diameter.

The propeller blades, unlike the controllable pitch propeller, are located in the hub-shaft connection area and a long adjustment lever reduces the blade retention adjustment force. The lateral force applied to the pin of the blade retention adjustment plate is transmitted through an adjustment yoke with a tapered groove to the hub, hub extension,
Or it can be transmitted directly to the hub cover. The residual axial holding or adjustment force is further reduced by approximately 173% due to the tapered grooves being inclined at 15-25 degrees; therefore, compared to a controllable pitch propeller, the residual holding and adjusting forces are reduced by a longer lever and tapered grooves. Adjustment force is reduced by about 176.

A controllable fixed propeller can be installed as an initial installation or used in the context of a modification without any design changes or additions to the propeller shaft.

Example The present invention will be explained in detail below using examples.

According to FIG. 1, the blades are held in a single propeller hub that is press-fitted into the propeller 1! I! In! Blade 4 is
It is inserted through an opening in the front face of the rear hub and is held obliquely to the axis of the propeller shaft 1 and fixed radially by a centering ring 5.

The rotation of one propeller hub 2 is controlled by the yoke guide 7.
a holding/adjusting yoke 8 that is supported by and displaced in the axial direction;
is engaged with the tapered groove 1o of the blade holding adjustment plate 4 via the adjustment pin and the sliding member 9. This retaining and adjusting yoke 8 is connected by screws to a rotatable screw spindle or screw bushing 11 which is held against axial displacement and is thereby held in the respective adjusted position. Alternatively, it can be brought into position by rotation of the screw spindle or screw bushing 11. For this purpose, a worm gear 12 is firmly mounted on the threaded spindle or threaded bushing 11 in mesh with a worm 14 driven by a one-way pinion stem gear 13. A tensioning device 15 engages the lever of the pinion-stem gear 13 in one direction, located on each side of the worm 14, which passes through a hole or opening in the single propeller-hub 2 and extends through the front hub face. , and there each is connected to one of the permanent magnet groups 16 arranged axially displaceably in the recess and the cover 17 .

A housing 19 is fastened to the stern 18, preferably in two parts, for accommodating an electromagnetic arrangement 20. The longitudinal section in FIG. 1 shows a coil core 21, a coil winding 22 and a coil cover 2 of an electromagnetic device 20, which is arranged non-rotatably in a preferably half-ring-shaped housing 19.
3 is further shown.

In FIG. 2, the upper view shows one propeller hub 2 and tapered groove 10 of a controllable fixed propeller.
1 shows a plan view of a lateral flat blade retaining URa plate 4 having a centering ring 5, a lateral support plate 6, a retaining and adjusting yoke 8 and later inserted into a 51 propeller hub 2; FIG. There is. The figure below shows a cross section of the propeller shaft 1.1, the propeller hub 2, the blade holding adjustment plate 4, the centering link 5 and the side support plate 6.

FIG. 3 shows a propeller hub 3 consisting of a four-blade controllable fixed external part of the propeller having internal and external hubs with a conical force fit on the propeller shaft 1.
and a plate holding and adjusting plate 4 arranged parallel to the axis with adjusting pins and slide members 9 and a holding and adjusting yoke 8 with a tapered groove 10 in longitudinal section. The holding and adjusting yoke 8 is.

They are supported for rotation on an external hub and held in their respective adjusted positions via a screw and spindle or screw bushing 11, or a worm wheel 12, a one-way pinion stem gear 13. Warm 1
4. The tension device 15 is brought into position via the permanent magnet group 16 and the electromagnetic device 20.

FIG. 4 is a front view facing the ship of a two-part propeller-hub 3 with two opposite pole permanent magnet groups 16 arranged for axial displacement in the hub and a pulling device. be.

In the figure on the right, a two-part electromagnetic house 2 located at the stern 18 with a coil core 21 and a coil winding 22 is shown.
0 is shown.

[Brief explanation of the drawing]

FIG. 1 shows the conical press connection with the propeller shaft, the obliquely arranged blade holding adjustment plate,
Figure 3 shows a longitudinal section through the propeller hub of a four-blade adjustable fixed propeller having a retention and adjustment mechanism and an associated permanent electromagnetic adjustment device. FIG. 2 is a plan view of a single propeller hub of a controllable fixed propeller and a flat-sided blade retention adjustment plate with retention, retention and adjustment yokes, and a cross-section of the hub and blade retention adjustment plate; It shows the face. FIG. 3 shows a conical press connection on the propeller-shaft and a blade retaining plate arranged parallel to the axis;
Consisting of a multi-section controllable fixed propeller with an internal hub and an external hub of a four-blade controllable fixed propeller having a retention and adjustment mechanism and an associated permanent magnet adjustment device. The propeller hub has a longitudinal section. FIG. 4 is a front view of the permanent magnet group and electromagnetic device. 1... Propeller shaft 2... One-part propeller hub 3... Multi-part propeller hub 4... Blade holding adjustment plate 5... Centering ring 6... Side support plate 7 ... Yoke guide 8 ... Holding and adjustment yoke 9 ... Adjustment pin and sliding member 10 ... Tapered groove 11 ... Threaded spindle or bushing 2 ... Worm wheel 3 ... One-way pinion and Stem gear 4... Worm 5... Pulling device 6... Permanent magnet group 7... Recess and cover 8... Stern 9... Housing O... Electromagnetic device 1... Coil core 2...・Coil winding 3...Coil cover 4...Hub cover Patent attorney Yugai Saifuji 2 Drawings 1st Procedural Amendment Procedural Amendment ↑ 41 Administrative Office Commissioner Fumiaki Yoshida Han 1゜ Case Display 1゜Display of the incident 2゜Name of the invention 2, Name of the invention Controllable fixed propeller - Controllable fixed propeller - Name Volks Aignerbetliebschifsufft Name Volks Aignerbetlief Schifsuv Elft “Neptune” “Neptune/# 5゜Specification subject to amendment

Claims (1)

Claims: 1. A one-piece or multi-piece propeller hub, the propeller hub being fixed to the propeller shaft by a cylindrical or conical hub/shaft connection, and a propeller blade. controllable fixed propeller (CFP), which is held in the hub so that it can rotate within a limited range of adjustment for main operation of the ship.
), the propeller blades held in the region of the hub/shaft connection in the blade legs are each connected to a one-piece or multi-part blade holding plate, which blade holding plate extends in the longitudinal direction. the "blade retention and adjustment plate" (4) is connected to the "blade retention and adjustment plate" (4) by a lever located in the propeller blade, and the blade retention adjustment plate (4) is engaged in a retention and adjustment yoke (8) located outside the retention area of the propeller blade. and for the retention and adjustment of the propeller blades in the propeller hubs (2, 3), an automatic locking gear mechanism or hydraulic system with multi-stage reduction is provided, and this gear mechanism or hydraulic system is installed in the propeller hubs. or to a magnetically actuated control mechanism in the propeller hub, which control mechanism is operatively coupled, preferably in a non-contact manner, to a magnetic pulse transmitter non-rotatably arranged on the hull or appendage. Features a controllable fixed propeller. 2. The blade retention adjustment plate (4) has a non-circular contour in the retention area of the propeller hub (2, 3), for example with flattened sides and its main longitudinal axis and retention area. is the main load surface of the propeller blade consisting of forward and reverse movement, and the transverse axis relative to the blade leg diameter is reduced in width, and the direction of the adjustment and holding lever is likewise longitudinal. 2. A controllable fixed propeller as claimed in claim 1, wherein the propeller is adapted to be aligned with the main axis or to form an angle of up to 20 degrees with the main axis on both sides. 3. A lever of a blade retention and adjustment plate (4) with a retention and adjustment yoke (8) is operatively connected to the front or rear of the propeller blade retainer, and the retention and adjustment yoke (8) is connected to the propeller hub. (2, 3),
controllable yoke guide (7) or controllable held for axial displacement in the hub cover and supported for rotation relative to the linear propeller hub (2, 3), propeller shaft (1) or hub cover fixed propeller. 4. A retention and adjustment yoke (8) is engaged in the blade retention adjustment plate (4) by an adjustment pin (9) guided in a tapered groove (10), and the axis of the tapered groove (10) , forming an angle of less than 45 degrees with the axis of the lever. 5 The holding and adjusting yoke (8) is connected by means of a screw connection.
a rotatable propeller hub (2, 3), a holding and adjusting spindle (11) arranged concentrically with a holding and adjusting cylinder or holding and adjusting yoke (8) held in the hub cover or on the propeller shaft (1); and this holding and adjusting spindle (11) is connected to a high reduction ratio automatic locking gear mechanism, for example a worm gear device (12, 14), which is held in the propeller hub (2, 3) or in the hub cover. Controllable fixed propellers according to claims 1 and 3, which are connected. 6. The holding and adjusting spindle (11) is connected to a worm wheel (12) and the worm (14) engaged with the worm wheel (12) is unidirectional, each engaged in an opposite direction of rotation. Controllable stationary propeller according to claims 1 and 5, rotatable by a pull rod or pressure rod (15) guided into the propeller hub (2, 3) by a pinion and stem gear (13). 7. A draw rod or pressure rod (15) guided in the propeller hub (2, 3) is connected to a magnet arrangement (16) displaceably held in the propeller hub (2, 3);
7. A magnetic system (20) arranged non-rotatably on the hull or on an appendage outside the propeller hub (2, 3) acts on this magnet arrangement (16) for adjustment. Controllable fixed propeller. 8. Claim 1, wherein the displaceable magnet arrangement (16) holding the propeller hub (2, 3) consists of at least two permanent magnet blocks (16) with opposite polar orientations.
and 7. A controllable fixed propeller according to 7. 9. A magnetic pulse transmitter arranged in a non-rotating manner on the hull or on an appendage, preferably as an electromagnetic device (20) or as a permanent magnet device (20) displaceable parallel to the axis of the propeller shaft (1). A controllable stationary propeller according to claims 1 and 7 manufactured. 10 A hydraulic system with a double-acting hydraulic cylinder acting on the holding and regulating yoke (8) is constructed as a closed circuit and a hydraulic pump is connected to the draw rod/pressure rod (15
2. A controllable stationary propeller according to claim 1, wherein the controllable fixed propeller is connected to a magnetic actuation control mechanism via a magnetically actuated control mechanism.