CZ278314B6 - Vessel propulsion device - Google Patents

Abstract

Two flexible tabular drive units (3, 4) are each equipped from their vertical sides with one vertical shaft (9, 10), where the first vertical shaft (9), fitted in the first bearing set (11, 12), is fixed to the stator part of the reversible rotary drive unit (2), whose rotary part is firmly connected through the rotor shaft (5) to the first transmission gear (6), which is connected to the second transmission gear through the gear element (7). This second transmission gear (8) is firmly fixed to the second vertical shaft (10) of the second drive unit (4), pivoted together with the second vertical shaft (10) in the second bearing set (13, 14). A steering disc (15) is arranged with clearance on the rotor shaft (5) by its centre hole. The disc (15) is pivoted in the horizontal duct (16) of the body frame (1) of the vessel, and joined at both ends with one of the torsion springs (17, 18), of which the first torsion spring (17) has its other end firmly fixed to the stator part of the reversible rotary drive unit (2) and the second torsion spring (18) has its other end firmly fixed to the first transmission gear (6).<IMAGE>

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a vessel propulsion apparatus comprising a ship for carrying payload and at least one direction control device.

BACKGROUND OF THE INVENTION

Currently, propulsion propulsion propulsion propulsion propulsion propellers are the most commonly used propulsion vessels in the stern of the vessel. A disadvantage of this method of propulsion is the fact that the propeller imparts a relatively large increase in speed to a relatively small amount of water. However, it follows from the ideal propulsor theory that the drive efficiency is greater the lower the rate of acceleration of the accelerated water flow and the lower the specific load of the propulsion area. A practical solution to this problem led to the construction of large-diameter, low-speed propellers. However, even in these propeller designs, the achievable efficiency is limited, for example due to an increase in viscosity losses.

The most economical way of propulsion is used by most fish, which give a relatively small increase in velocity relative to their weight by rippling all or part of their body, especially the tail fin. A disadvantage of the previously proposed technical solutions for propulsion vessels with lateral oscillations, simulating the movement of the tail of the fish tail, is their considerable mechanical complexity, particularly in the field of converting the rotary motion of the drive unit to the oscillating movements of the propulsion organs. The navigation direction control systems are also complicated. All this together leads to significant energy losses and a high susceptibility of these devices to failures.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are largely eliminated by the vessel propulsion device of the invention, which consists of two flexible plate-like propulsion elements, each having one vertical shaft on one of its vertical sides, the first vertical shaft mounted in the first assembly. The rotor bearing is fixedly connected to the first gear wheel by means of a rotor shaft. The first gear wheel is then mechanically coupled to the second gear wheel rigidly coupled to the second vertical shaft of the second drive member by means of a transmission element. The second drive member is supported with its second vertical shaft in a second bearing system, and a rotor disc is arranged on the rotor shaft with clearance through its central bore, rotatably mounted in the horizontal guide of the vessel body frame and connected to one of its sides with one torsion spring. In this case, the first torsion spring has its second end connected to the stator portion of the reversible rotary drive unit and the second torsion spring has its second end fixedly connected to the first gear wheel.

The essence of the vessel propulsion device is furthermore that on the horizontal guide of the steering disc there is provided a pivoting and arresting device for fixing and bidirectional pivoting of the steering disc.

The advantage of the proposed vessel propulsion device, which combines a rotary drive unit and two lateral swinging propulsion elements, is that it enables a simple design of the entire propulsion without the complex and hitherto used lever gearing, resulting in higher efficiency, lower production costs and lower failure rate. A further advantage of the device is that the drive unit is not rigidly connected to the ship body by any part thereof and thus does not transmit its reaction to it. Indeed, the reaction of the rotary unit is captured by the second propulsion member and thus performs directly useful work without causing the boat body to swing and thus increase losses. Among the advantages of the device is also easy control of the direction of navigation of the vessel by simply turning the neutral position of the propulsion elements with lateral oscillations by means of the control disc, and the easy possibility to adapt the oscillation angle and its frequency to specific conditions, especially speed.

Overview of the figure in the drawing

An example of a particular embodiment of a vessel propulsion device is shown in the drawing, in which Fig. 1 shows a plan view of a vessel with one drive unit and two propulsion elements; Fig. 2 shows a side view of the vessel;

DETAILED DESCRIPTION OF THE INVENTION

The vessel propulsion device according to the invention is formed by a vertically oriented reversible rotary drive unit 2, eg with a geared electric motor. The first vertical shaft 6 is fixedly connected to the stator part of the reversible rotary drive unit 2, arranged in the first set of bearings 11, 12, to which the first drive member 2, represented by a flexible plate, is attached under one surface. The rotor shaft 5 is then fixedly connected to the rotor portion of the reversible rotary drive unit 2, at the end of which the first gear wheel 6 is fixed. The first gear wheel 6 is then connected to the second gear wheel 8 by means of a transmission element 7, e.g. the gear wheel 8 is rigidly connected to a second vertical shaft 10, housed in a second set of bearings 13, 14 and provided, like the first vertical shaft 9 at its end, below the water surface, with a second drive member 4, also formed by a flexible plate.

On the rotor shaft 5, a control disk 15 is arranged with a clearance in its central opening, which is rotatably supported by its peripheral part in the horizontal guide 16 of the frame of the body 1 of the vessel. One end of one of the torsion springs 17, 18 coaxially arranged with the rotor shaft 5 is attached to each side of the control disc 15. The first torsion spring 17 then has its other end firmly connected to the stator portion of the reversible rotary drive unit 2 and the other torsion spring 18. the other end has its end fixedly connected to the first gear wheel 6. On the horizontal guide 16 of the control disc 15, a pivoting and arresting device 19 is then provided.

In operation of the vessel propulsion device according to the invention, the DC electric motor constituting the reversible rotary drive unit 2 is supplied with alternating polarity pulses of alternating polarity. This causes a repeated reversal of the sense of rotation. Torque re

The reversible rotary drive unit 2, the stator portion of which is fixedly connected to the first drive member 6, causes it to rotate alternately in one direction and the rotor shaft 5 fixedly connected to the rotor portion of the reversible rotary drive unit 2 in the opposite direction. The rotor shaft 5 then rotates by means of the transmission element 7 a second vertical shaft 10 and thus a second drive member 4. The two drive members 3, 4 thus oscillate in counter-phase and thus act on the surrounding water as two synchronous, counter-operating caudal fins.

The position of the control disc 15 with respect to its horizontal guide 16 and hence the ship body 1 is given the neutral position of the two propulsion elements 3, 4. Torsion springs 17, 18 stabilize the adjusted neutral position of the two propulsion elements 3, 4 and The energy of the rotating masses when reversing the sense of rotation of the reversible rotary drive unit 2, thereby contributing to increasing the energy efficiency of the entire drive By rotating the control disc 15 by means of the pivoting and arresting device 19, both torsion springs 17, 18 which, as a result, controls the direction of navigation of the vessel.

Claims (2)

PATENT CLAIMS A device for propelling a vessel, comprising a ship for carrying payload and at least one direction control device, characterized in that it consists of two flexible plate-shaped propulsion elements (3, 4), each provided on one of its vertical sides one vertical shaft (9, 10), of which the first vertical shaft (9) mounted in the first set of bearings (11, 12) is rigidly connected to the stator part of the reversible rotary drive unit (2) of the vessel, the rotor part of which is the shaft (5) is rigidly connected to a first gear wheel (6), which is connected via a gear element (7) to a second gear wheel (8), rigidly connected to a second vertical shaft (10) of a second drive member (4) rotatably mounted with a second vertical shaft (10) in the second set of bearings (13, 14), wherein on the rotor shaft (5) its center o a control disc (15) arranged rotatably mounted in a horizontal guide (16) of the frame of the vessel body (1) and connected to each of its sides with one torsion spring (17, 18), of which the first torsion spring (17) has its the second end rigidly connected to the stator portion of the reversible rotary drive unit (2) and the second torsion spring (18) has its second end rigidly connected to the first gear wheel (6). Device according to claim 1, characterized in that a pivoting and detent device (19) is provided on the horizontal guide (16) of the control disc (15) for fixing and bidirectional pivoting of the control disc (15). 1 drawing -3GB 278314 Ββ