The main propulsion system of the vessel
(57) Abstract:Usage: in shipbuilding. The invention: the main propulsion system of the vessel contains an underwater propulsion system 1 connected to rotate through almost vertical tubular shaft 8 that is installed with the possibility of turning this ship. The hollow casing 1A, surrounds the driving engine 2, made in the form of an electric motor alternating current and connected to the propeller shaft 3, which is connected with the propeller screw 4 on the outside of the casing 1A. The casing 1A inside is supported by several mainly vertical plate bulkheads 5, which are arranged so that they in combination act as stiffeners and support casing 1A, as the fastening elements of the running of the engine 2 in the casing, as elements that transmit on the casing 1A of the reaction force on the torque developed driving motor 2, and as the wall elements of the air tunnels for incoming and outgoing gaseous refrigerant to the running of the engine 2. 11 C.p. f-crystals, 7 Il. The invention relates to shipbuilding, in particular in the main propulsion installations of ships.Known as main propulsion system of the vessel, adenosin propeller, associated with the rotary, predominantly vertical tubular shaft mounted in bearings mounted in the hull, and a propulsion unit, with the exception of the propeller, and the tubular shaft is enclosed in the hollow casing (application Finland N 76977, CL 63 H 23/00, 1988).The disadvantages of the known propulsion systems are low power, efficiency and durability.The technical result of the invention is to improve power, efficiency and durability of the main propulsion system.The result is the fact that known as main propulsion system of the vessel within the enclosure is installed, predominantly vertical plate bulkheads, providing rigidity and support to the housing, the fixing driving motor relative to the casing, the transfer to the casing of the reaction forces from the torque developed a running engine, and the creation of a tunnel for incoming and rising gas cooler running engine.In addition: a running engine is shifted in the radial direction from the bottom center of the motor unit;
plate bulkhead is connected to the motor stator and form part of the frame of the pack, mainly perpendicular to the propeller shaft;
the center of gravity propelling motor offset for the axis of rotation of the tubular shaft in the direction from the propeller;
the ratio of the length of the propelling motor to its external diameter is 0.5 to 1.8, preferably from 1.0 to 1.6;
the angle between the propeller shaft and the axis of rotation of the tubular shaft is 89-70opreferably 85-75o;
outside of the hollow casing of the motor unit is made of longitudinal inclined guide surface for deflection of the flow of water and increase the rigidity of the casing;
thrust bearing, axial bearing load of the propeller shaft, is located at the opposite end of the propulsion unit relative to the propeller for cooling the lubricating oil of the bearing sea water;
inside the cavity of the casing of the created air pressure exceeds the pressure of the water surrounding the casing, and a running engine provided with an air heat exchanger for cooling;
along the longitudinal axis of the propeller shaft is made a tunnel for the flow of cooling the bearings of the propeller shaft outboard water;
the motor unit is equipped with at least the second driving motor associated with the second propeller screw.In Fig. 1 is Nadolny cut the other of the propulsion system; in Fig. 3 is a schematic section of a preferred implementation of the propulsion system of Fig. 4 is a schematic perspective representation of the propulsion system of Fig. 5 is a schematic side view of a vessel equipped with such a propulsion system of Fig. 6 is a schematic depiction of pressurized propulsion of the General type shown in Fig. 2; Fig. 7 is a schematic longitudinal section of a twin-engine propulsion.The external casing 1A surrounds the motor unit 1 and the tubular shaft rotation 8. Running the engine 2 is made in the form of electric motor, AC, is located inside the propulsion system 1, is directly connected to the propeller shaft 3 and causes it to rotate. Prop 4 is attached to the propeller shaft outside of the casing 1A. In Fig. 1 screw, not shown, and Fig. 4 screw shown only schematically. The screw may be pulling or pushing. In Fig. 1 and 5 use the pull screw, Fig. 2, 4 and 6 pusher propeller.Running the engine 2 is attached to the casing 1A through several plate bulkheads 5. These plate bulkheads attached directly to the stator of the driving motor 2 so that they are integrated into the supporting structure of the stator and at the same time secure the driving motor to the casing 1A, and the s bulkheads 5 act as stiffeners for the casing 1A. Next, the plate bulkheads form air ducts-tunnels for incoming and outgoing cooling air required for cooling the driving motor 2. Arrow 6 a and 6 indicate the flow direction of the cooling air. The casing 1 and the driving motor 2 is also attached, at least one longitudinal plate bulkhead 5 and.In Fig. 2 clearly visible plate bulkheads 5 and their position relative to the running of the engine 2. The tunnels for the incoming cooling air are located on the ends of the engine 2, and tunnels to divert cooling air are located in the Central area of the engine. Arrow 6C show as part of the cooling air supplied to the engine, is applied to the end of the engine, where it enters the air gap between the stator and the rotor and flows through the gap and through radial slots in the stator out of the tunnel for the exhaust of the cooling air. As already explained, the width of the tunnels for the applied cooling air is significantly less in the axial direction of the engine 2 than the corresponding width of the tunnel for the exhaust of the cooling air.It is evident from Fig. 2 also shows that running the engine 2 is not directly under the rotary axis 7 digiovine projection of the cross section of the tubular shaft 8 of a turn, which is located further away from the propeller 4. This arrangement provides an advantageous distribution of mass about the axis of rotation 7 and it is also favourable for a good streamlined propulsion 1. In Fig. 2 the ratio of the diameter d of the propulsion system 1 to the diameter D of the propeller 4 is less than 0.5, which is relatively favorable.In the embodiment shown in Fig. 2, uses the cooling effect of the surrounding water for cooling the bearings of the propeller shaft. When the ship moves in the direction of the arrow 9, the surrounding water is pushed in the axial cooling tunnel 10, located in the propeller shaft 3, as shown by arrows 11. The water flow in the tunnel 10 is stronger, the higher the speed of the vessel and at full speed the cooling is most intense when it is just necessary. The water flow can be increased by providing a radial tunnels on the side of the propeller, and in these tunnels flow (shown by arrows 11a) increases under the action of centrifugal force. If the propeller 4 is pulling, the simplest solution is a cooling tunnel 10, passing through the axis around the propeller shaft and through the hub of the propeller.In Fig. 2 axial tasunovo cooling. This bearing through the wall 13 may be separated from the rest of the internal cavity of the propulsion system 1. A closed cavity 14 at the end of the propulsion system is under strong cooling action of the surrounding water. This can be used to skip part of the circuit of lubricating oil to the bearing 12 so that it is cooled, giving heat to the sea water.In Fig. 3 schematically illustrates the main engine of the ship machine M that lead generator C. This combination is connected to the Central control device 15, which transmits power generated by the generator, through cables 16 for driving the motor 2. The cables 16 are shown only schematically, since the driving motor 2 is rotating block 1, the power has to pass through the contact device with the contact rings 17. The rotation of the propulsion system 1 is performed by the steering machine motor 18, through which a small gear 19 acts on the ring gear 20 connected with the tubular shaft rotation 8. The design of the hull position indicated by the number 21. In Fig. 3 shows that running the engine 2 is not installed on the axis of the propulsion system 1. more extensive part of the 5V from the top side of the engine, that improves their structural strength. This misalignment is approximately 3-5% of the external diameter of the engine 2.In Fig. 4 shows a longitudinal slightly slanted guide surface 24 on the outside of the propulsion system 1. These guide surfaces give the current passing water rotational component in the direction of the arrows 25, i.e. in the direction opposite to the direction of rotation of the propeller 4 in direction of arrow 4. This increases the capacity of the propulsion system and the efficiency of the screw. At the same time the guiding surfaces serve as stiffeners for the casing 1 a.In Fig. 5 shows how the propulsion system 1 can be installed on the vessel. The propulsion system can be set obliquely, so that the angle between the axis of rotation 7 and the propeller shaft 3 is approximately 80o. This is a good solution, especially when the propeller is pulling, in which case the propeller is located close to the inclined rear part of the bottom 26 of the case which water is flown mainly in the direction of the arrow 27. The inclined position of the propulsion system 1 provides work of the screw, in the direction flowing past him water, which is favourable from the point of view of obtaining Makoto provides significant advantages in terms of its strength.In Fig. 6 shows the propulsion system 1 with sealed and narutoi internal cavity of the propulsion system 1 and the tubular shaft 8. The pressure is maintained above the maximum water pressure so that water does not leak in the engine installation and may not cause damage to the equipment in narutoi cavity. Pressure is maintained using a compressor device 28 and is controlled by the machine control 29. The required gauges and/or control devices 30 connected to the system. To ensure proper operation of the cooling system running of the engine 2, it is necessary to use a heat exchanger 31 through which the pumped refrigerant, such as water or air, in the direction of arrow 6. For circulation of cooling air within the closed cavity requires one or more fans 32. Cooling for the chassis engine through one or more heat exchangers may also be used in the case when the internal cavity of the propulsion system is not nadota or is not closed for other reasons.In Fig. 7 shows two independently operating driving motor 2 a and 2 to the motor 1. Running the engine 2 and is directly connected to the propeller screw 4, an end of the propulsion system, but you can submit a design, when they are at different ends of the propulsion system. The screws 4 and 4 rotate in opposite directions. Each screw has its thrust bearing 12 a and 12 b respectively. Air cooling of the traveling motors 2 a and 2 is made in essentially the same manner as in Fig. 1 and 2, but there are only four plate bulkheads 5, arranged crosswise relative to the traveling motors 2 a and 2 C. Use of two or more propellers rotating in pairs in opposite directions, increases the efficiency of the propulsion system. 1. The main propulsion system of the vessel containing the motor unit including an electric driving motor connected to the propeller shaft running propeller associated with rotary, mostly vertical, tubular shaft mounted in bearings mounted in the hull, and a propulsion unit, with the exception of the propeller, and a tubular shaft enclosed in the hollow casing, characterized in that the inside of the casing is mainly vertical plate bulkheads, providing rigidity and support to the housing, the mounting chassis is the motor, and creating walls of the tunnels for the incoming and outgoing gas cooler running engine.2. Installation under item 1, characterized in that the way the engine is shifted in the radial direction downward from the center of the motor block.3. Installation on PP.1 and 2, characterized in that the plate bulkhead is connected to the motor stator and form part of the stator frame construction.4. Installation on PP.1 to 3, characterized in that the way the engine to keep it connected with five plate bulkheads mainly perpendicular to the propeller shaft.5. Installation on PP. 1 to 4, characterized in that the center of gravity of the propelling motor offset for the axis of rotation of the tubular shaft away from the propeller.6. Installation on PP.1 to 5, characterized in that the ratio of the length of the propelling motor to its external diameter is 0.5 to 1.8, preferably from 1.0 to 1.6.7. Installation on PP.1 to 6, characterized in that the angle between the propeller shaft and the axis of rotation of the tubular shaft 89 70opreferably 85 - 75o.8. Installation on PP. 1 to 7, characterized in that the outside of the hollow casing of the motor unit is made of a longitudinal inclination of the spacecraft in PP.1 8, characterized in that the thrust bearing, axial bearing load of the propeller shaft, is located at the opposite end of the propulsion unit relative to the propeller for cooling the lubricating oil of the bearing sea water.10. Installation on PP. 1 to 9, characterized in that inside the cavity of the casing of the created air pressure exceeds the pressure of the water surrounding the casing, and a running engine provided with an air heat exchanger for cooling.11. Installation on PP.1 to 10, characterized in that the longitudinal axis of the propeller shaft is made a tunnel for the flow of cooling the bearings of the propeller shaft outboard water.12. Installation on PP.1 to 11, characterized in that the motor unit is provided with at least the second driving motor associated with the second propeller screw.
FIELD: bridge erection and crossing equipment; pontoon parks.
SUBSTANCE: proposed mounting includes frame, transom board, cross-piece, spacer and two side members. Cross-piece is made in form of beam secured on force portion of pontoon by means of pin joint and provided with shaped bolts for securing on pontoon transom. Spacer is made in form of distance truss with lower and upper brackets supported by fore portion of pontoon and is secured to cross-piece by means of bolts; frame is connected with cross-piece by means of fork joint and is supported by spacer; articulated to each strut of frame is side member which may be fixed in working position; both side members are provided with plates to which transom board is secured. Besides that, struts of frame are provided with brackets and transversal couplings of side members are provided with lugs; brackets and lugs have two parallel holes each where axles and pins-retainers are fitted in skew-symmetric position relative to side member. Proposed device ensures motorization of pontoon and compact transportation due to folding of mounting in transportation position reducing volume by 3 times.
EFFECT: enhanced efficiency and reliability.
2 cl, 8 dwg
FIELD: shipbuilding; building of submersible vehicles for study of sea depth.
SUBSTANCE: proposed submersible vehicle has hull and aft propulsion plant which includes two reversible cruise propulsors mounted in horizontal plane at angle to submersible vehicle axis on both sides from axis. Propulsion plant of submersible vehicle is additionally provided with rudder stock mounted in horizontal plane perpendicularly to longitudinal axis of submersible vehicle; rudder stock is provided with reversible drive for performing reciprocating motion relative to longitudinal axis. Reversible cruise propulsors are immovably mounted on rudder stock. Proposed submersible vehicle possesses high maneuverability in vertical plane (in depth) over entire range of working speeds which is necessary for passing round obstacles in conducting TV survey near water area bottom.
EFFECT: enhanced efficiency of control of submersible vehicle.
FIELD: ferries for rivers of limited navigation.
SUBSTANCE: proposed ferry is provided with pontoons which are spaced apart in width and are made from different materials; cargo and passenger deck is secured on pontoons at two levels. Ferry is also provided with propulsion plant. Upper surface of cargo deck rising above water during operation is located in center plane of cylindrical pontoons; lower part of cargo deck which possesses positive buoyancy is immersed in water. Middle cylindrical part of each pontoon is made from non-metallic materials and is connected with metal end units by means of flanged joint located inside pontoon. Propulsion plant consists of two portable units mounted turnably on cargo deck for control of heading; these units are spaced apart along longitudinal axis of symmetry on edges of cargo deck.
EFFECT: increased capacity of ferry at shallow draft.
4 cl, 9 dwg
FIELD: smaller and medium shipbuilding.
SUBSTANCE: according to first version, shipboard transmission consists of inclined propeller shaft with propeller and bracket. Propeller shaft is connected with engine shaft or with intermediate shaft via constant-velocity universal joint, cardan joint or coupling ensuring rotation of shafts at angle relative to each other. Propeller shaft bracket is secured on ship's hull for lifting it. Joint is located under bottom and is closed with fairing. According to second version, joint is located in branch pipe mounted on inner side of bottom and fitted with flange.
EFFECT: extended range of technical means.
6 cl, 2 dwg
FIELD: smaller and medium shipbuilding.
SUBSTANCE: according to first version, proposed shipboard transmission consists of inclined propeller shaft with propeller and bracket. Propeller shaft is connected with engine shaft via intermediate shaft and two universal joints made in form of constant-velocity universal joints, cardan joints or couplings ensuring rotation of shafts at angle relative to each other. Propeller shaft bracket is secured on ship's hull for lifting it. Joints are located under bottom and are closed with fairing. According to second version, joints are located in branch pipe mounted on inner side of bottom and fitted with flange.
EFFECT: extended range of technical means.
26 cl, 2 dwg
FIELD: water transport facilities.
SUBSTANCE: proposed sea-going ice-breaking transport vessel has hull with keel, forecastle with deck house, fore pointed extremity, aft convex cochleariform lines, aft deck and propulsion-and-steering gears. Hull is additionally provided with flat bulb considerably projecting beyond fore perpendicular. Fore lines are made with U-shaped frames over entire height of side including forecastle superstructure with streamlined deck house; keel is rising in sternpost area; when it is stowed, its lower aft wedge-shaped edge projects beyond sternpost line. Aft cochleariform lines form section of deck which is oval in plan with transom inclined at angle of 45 deg. In underwater portion, lines smoothly change into side bulges-sponsons provided with passageways with longitudinal slots in their bottom part for motion of propulsion-and-steering gears over them. Side bulges-sponsons terminate in falling-out side on external side and falling-home side in their fore part so that line of maximum breadths in this area directed upward and sternward should cross the waterline at angle of 3-6 deg. Extreme breadth of hull over bulges-sponsons in the waterline area exceeds midship breadth. Bottom part of passageway has horizontal or slightly deadrise surface in cross-sections which passes to stern at angle of 1-3 deg. relative to waterline and extends to deck at angle of 45 deg. On both sides of its oval section made in form of shoulder perpendicular to hull CL. Propulsion-and-steering gear includes two all-moving struts with nacelles located in aft section of ship, motors in nacelles for rotating the propellers and load-bearing service lines running to struts from power module of vessel. Struts with nacelles are located on both parts of stern in bulges-sponsons. Each strut with nacelle has streamlined guide stud in form of spherical segment with base directed upward which is equipped with circular thrust sliding bearing over its perimeter; each strut has vertical shaft which is coaxial with segment and is rotated by motor in radial-thrust bearing of carriage located in passageway of bulge-sponson and driven by means of load-bearing service lines on four bevel gear wheels connected in pairs by means of transversal hydraulic cylinders of carriage and driven by hydraulic motors built in them; hydraulic motors are thrown into engagement with inclined toothed racks laid on either side from slot in bottom part of passageway. Width of this slot is equal to diameter of vertical shaft.
EFFECT: enhanced ice passability of vessel.
3 cl, 7 dwg
SUBSTANCE: invention relates to ship building and is intended for motorboats and scooters. In compliance with the first version, the remote control incorporates a tie-rod and a two-arm lever, or of tie-rods and two-arm levers. The ship control element is furnished with a plate or plates making a kinematic linkage allowing to slide or to slide-and-turn, the said plate or plates being fastened on a bulwark rail or rails, or on a deck. In compliance with the second version, the ship control element is coupled with a lever fitted on the bulwark rail or on deck.
EFFECT: simple and reliable device.
6 cl, 1 dwg
FIELD: transportation, engines and pumps.
SUBSTANCE: ship screw rudder complex incorporates a drive engine arranged above the ship water line and linked with the ship shaft running in bearing in the nacelle below the water line, the said shaft being coupled with the screw shaft accommodating the propeller screw fitted thereon. The said complex comprises also a top shaft arranged parallel to the lower shaft and coupled with the drive engine output shaft. The top and lower shafts are crankshafts coupled via a con-rod mechanical transmission arranged between them and furnished with rod bearings. Rod and main bearings of the lower crankshaft are water-lubricated plain bearings. The nacelle space can communicate with outboard.
EFFECT: higher reliability and efficiency of screw rudder columns.
3 cl, 2 dwg
FIELD: shipping building industry.
SUBSTANCE: invention refers to shipping building industry and deals with building of ship propellers for spatial movement of objects on surface or inside fluid medium, and providing controllability of objects. Rudder propeller consists of a shaftless propeller-bladed propulsion device and rotary mechanism of blade rotation plane. The latter comprises two electric motors with built-in electromagnetic brakes and external gears which are engaged with a spiral cone-type wheel whereto there rigidly attached is supporting frame of electromagnetic propeller-bladed propulsion device, which at the same time serves as propeller shrouding. That electromagnetic propulsion device is three-phase and synchronous, and is excited from constant magnets located in propeller blades. The casing of electromagnetic propulsion device consists of interleaved ferromagnetic core of stator with three-phase winding. Interleaved ferromagnetic core of rotor with short-circuit starting winding is arranged along radial direction inside stator core at the distance of air gap therefrom.
EFFECT: invention simplifies rudder propeller design, reduces power required for its operation, and improves maneuverability of movement and economy of useful energy conversion.
SUBSTANCE: suspension comprises screw-clamp arranged in the form of doubled bracket installed on vessel transom. Two parallel guides are fixed to screw-clamp, in lower part of which carriage is installed, movable in vertical direction. Carriage has horizontal joints, with the help of which it is connected to side screw-clamps rigidly fixed on sheer clamps of speedboat. Hydrojet engine of speedboat has remote control from vessel.
EFFECT: unification of screw-clamp with serial suspended engines, simplified of speedboat suspension design.