RU2778412C1 - Arneson drive of boat motor and outboard motor containing arneson drive - Google Patents

Abstract

FIELD: shipbuilding.

SUBSTANCE: invention relates to the field of shipbuilding, namely to partially submersible outboard motors. The Arneson drive of the outboard motor includes an input shaft passing into the propeller shaft passing inside the stern tube, on the body of which the tilt cylinder is hinged. A propeller is placed at the end of the propeller shaft. At the end of the stern tube around the propeller there is a fairing made in the form of a rigid casing with an open rear wall, as well as a cutout under the propeller.

EFFECT: increased efficiency of the propeller and reduced load on the outboard motor.

5 cl, 6 dwg

Description

The invention relates to the field of shipbuilding, namely to partially submersible outboard motors, and can be used in water transport to equip small and medium-sized floating craft with small and medium displacement for both special and general purposes.

Identified in recent years, the shortcomings of known outboard motors and their elements need significant improvements, since over the past decades they have not undergone significant changes and are not technically perfect. The proposed invention tries to solve one of the tasks in the field of outboard motor building and shipbuilding.

The Arneson drive - in general - is a propulsion complex that allows you to control the vessel, provides optimal operating parameters for the supercavitating semi-submerged propeller of high-speed vessels.

The closest analogue to the proposed invention in terms of technical essence is an Arneson drive for an outboard motor and an outboard motor containing an Arneson drive (Journal number 152 "Boats and Yachts", 1991), http://www.barque.ru/engine/1991/new_type_transmission_arneson_drive . This design includes an input shaft that passes into the propeller shaft (through the universal joint), stern tube, propeller and tilt cylinder, while the outboard motor includes an output shaft that interacts with the Arneson drive input shaft.

The disadvantage of this device is the inability to provide a constant operating level of direction (supply) of water to the propeller, depending on the speed and load of the vehicle, wave height, and other factors.

The main objective of the invention is to eliminate these disadvantages of the closest analogue.

EFFECT: stabilization of the level of water direction to the propeller at different vehicle speeds and external factors, to increase the efficiency of the propeller and reduce the load on the outboard motor.

This result is achieved by the design of the Arneson outboard motor drive, including the input shaft, which passes into the propeller shaft, passing inside the stern tube, on the body of which the tilt cylinder is hinged, a propeller is placed at the end of the propeller shaft, while at the end of the stern tube, around the propeller is placed a fairing made in the form of a rigid casing with an open rear wall, as well as a cutout under the propeller.

The input shaft is connected to the propeller shaft through a cardan joint.

The fairing is basically made in the form of a rectangular parallelepiped or a cylinder or a cone with a horizontally beveled lower surface.

The fairing includes a vertical partition that separates the propeller from the drive elements.

Also, this result is achieved by a boat motor with an output shaft interacting with the input shaft of the Arneson drive, made according to claim 1.

Further, the proposed invention will be discussed in detail, taking into account the illustrations, where Fig.1 shows a General view of the Arneson drive with a fairing in the form of a cone with a boat motor; figure 2 is a schematic representation of the propeller in the fairing; figure 3 is a schematic representation of a conical fairing in the area of the propeller. Bottom view; figure 4 is a General view of the drive Arneson with a fairing in the form of a parallelepiped with a boat motor, figure 5 is a schematic representation of the propeller in the fairing; figure 6 is a schematic representation of the fairing in the area of the propeller. Bottom view.

Positions on the drawings:

1 - input shaft

2 - propeller shaft

3 - stern tube

4 - tilt cylinder

5 - propeller

6 - fairing

7 - cutout

8 - universal joint

9 - vertical partition

10 - outboard motor

11 - output shaft

The Arneson drive of the outboard motor includes an input shaft 1, which passes into the propeller shaft 2. The input 1 and propeller 2 shafts can be made as one common single shaft, or as two separate shafts that are joined together through a cardan joint 8, consisting, for example, from a cardan flange, fork and cross, or two forks articulated with a ball or disk (not shown in the drawing).

The input 1 and propeller shafts 2 pass inside the stern tube 3, i.e. a metal pipe in which the input 1 and propeller 2 shafts are enclosed.

The tilt cylinder 4 of the Arneson drive is hinged on the body of the stern tube 3, allowing it to be tilted at a certain angle from the horizontal of the drive/screw 5. The cylinder can be made, for example, in the form of a hydraulic or pneumatic cylinder.

At the end of the propeller shaft 2 there is a propeller 5. The propeller 5 can have a different design and a different number of blades, for example, 3,5,7, etc.

At the same time, at the end of the stern tube 3, around the propeller 5, a fairing 6 is placed, made in the form of a rigid casing with an open rear wall, as well as a cutout 7 under the propeller 5.

The fairing 6 is made in the form of a rigid casing with an open rear (next to the propeller 5) wall, in which there is a cutout 7 at the bottom under the propeller 5. This cutout 7 ensures the unhindered rotation of the propeller 5 and captures the necessary (given) amount of water for the correct operation of an engine with a partially submerged propeller.

The fairing 6 is basically made in the form of a rectangular parallelepiped or a cylinder or a cone with a horizontally beveled lower surface (see view A).

Preferably, the fairing 6 includes a vertical baffle 9 separating the propeller 6 from the drive elements.

Also subject to patent is an outboard motor 10 having an output shaft 11 cooperating when installed with the input shaft 1 of the Arneson drive. The output shaft 11 of the outboard motor 10 with the input shaft 1 of the Arneson drive can also be installed similarly to the cardan joint 8 described above.

The principle of operation of the device is as follows.

The Arneson drive connects to the outboard motor, which is installed on a boat or other watercraft. After starting the outboard motor, the propeller 5 begins to gain momentum, and the boat starts moving. At the moment of speed gain, a limited amount of water is supplied to the propeller 5 due to the presence of a fairing 6 and a cutout 7 in it for the propeller 5. Excess water at the time of launch does not fall on the propeller, thereby ensuring the water supply at the required level. Further, when accelerating, the aft part of the boat is loaded and lowered (according to the law of physics), however, at the moment, the fairing 6 also displaces water, keeping at the working level and stabilizing the level of water directed to the propeller 5, to increase the efficiency of the propeller and reduce the load to the boat motor.

At the same time, it is possible to additionally adjust the inclination of the fairing 6 by means of the tilt cylinder 4, which changes the angle of inclination of the device and, in particular, the fairing 6, thereby further increasing the efficiency of the propeller in various modes, for example, it is possible to tilt the fairing 6 to a certain angle, thereby further unloading screw 5, which can be effective, for example, when the boat is heavily loaded.

The proposed invention provides stabilization of the level of water direction to the propeller at various speeds of the boat and external factors, to increase the efficiency of the propeller and reduce the load on the outboard motor.

Claims (5)

1. The Arneson drive of the outboard motor, characterized in that it includes an input shaft that passes into the propeller shaft, passing inside the stern tube, on the body of which the tilt cylinder is hinged, a propeller is placed at the end of the propeller shaft, while at the end of the stern tube around the propeller there is a fairing made in the form of a rigid casing with an open rear wall, as well as a cutout under the propeller. 2. Drive Arneson outboard motor according to claim 1, characterized in that the input shaft is docked with the propeller shaft through the cardan joint. 3. The Arneson drive of the outboard motor according to claim 1, characterized in that the fairing is basically made in the form of a rectangular parallelepiped, or a cylinder, or a cone with a horizontally beveled lower surface. 4. The Arneson drive of the outboard motor according to claim 1, characterized in that the fairing includes a vertical partition separating the propeller from the drive elements. 5. Outboard motor, characterized in that it contains an output shaft that interacts with the input shaft of the Arneson drive, made according to claim 1.

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