CN2312875Y

CN2312875Y - Screw-propeller mover with large propelling area for ship

Info

Publication number: CN2312875Y
Application number: CN 96241139
Authority: CN
Inventors: 周日康
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-21
Filing date: 1996-10-21
Publication date: 1999-04-07
Anticipated expiration: 2006-10-21

Abstract

The utility model relates to a screw-propeller with a large propelling area for a ship. The utility model is characterized in that a plurality of screw-propellers are installed on a back plate of a hull at equal intervals; the screw-propellers are overspread across the width of a ship stern and on gross area of the draft of the ship stern. The back plate is provided with machine-motor changeover type structure or machine split shaft structure. One screw-propeller is driven by each motor of the mechanical-motor changeover type structure. Each rotating shaft of a screw is driven by a main and an auxiliary power shafts through a belt in the machine split shaft structure. Half the number of the screw-propellers are left rotating screws; the other half of the number of the screw-propellers are right rotating screws. The utility model has the advantages that the energy availability factor of the screw-propeller with a large propelling area for a ship is 2-3 times the original energy availability factor. The screw-propeller with a large propelling area for a ship is suitable for various ships which use screw-propellers.

Description

Big propelling area propeller peculiar to vessel

The utility model belongs to marine propulsion, particularly a kind of propeller of big propelling area peculiar to vessel.

Present screw propellor for boat, great majority all are to adopt single propeller, and it is that the master adds that several auxiliary propellers of being located at the hull both sides are angle of rake that large vessel also has the two double helix oar built propellers of employing.No matter be single propeller or two main screw propelling unit, when screw propeller rotates, the propelling area that the circle of being drawn by the propeller blade end advances area or each to participate in the propeller of combination can occupy the area that the ship stern can take far away, promptly fail to occupy by ship stern width and the formed area of draft thereof, cause its capacity usage ratio less, fail more effectively saving in energy.

The purpose of this utility model is, design and produce a kind of propeller of big propelling area peculiar to vessel, adopt the propelling area that strengthens original propeller, make it occupy the area that the ship stern can take as much as possible, increase its capacity usage ratio to reach, thereby reach purpose of energy saving.

The technical scheme of big propelling area propeller peculiar to vessel of the present utility model has two kinds: the first does not change the quantity of original screw propeller, advance the bigger screw propeller of area to make propelling unit and use instead, make it advance area to occupy the area that ship stern width and the ship aft draft degree of depth can take as much as possible.This scheme is best suited for small boat.It two is to adopt the screw propelling unit, on side board behind the hull, along vertical and laterally equally spaced a plurality of propellers are installed, the gross area of the cloth boatload stern width and the ship aft draft degree of depth makes its combination advance that area is as much as possible to occupy the area that the ship stern can take.The angle of rake structure of screw can be divided into two kinds, and a kind of is a mechanical motor switching structure; Another kind is mechanical split shaft structure.By setting device, the rotating speed of screw propeller is adjustable within the specific limits.

Machinery-motor switching structure drives generator for electricity generation by the diesel engine on the ship (or other prime power machines), is powered to the electrical motor that each drives propeller by electrical generator then, makes each motor drives one double helix oar propelling unit work; The rotation direction of adjacent two electrical motors should be opposite, and the rotation polarity of adjacent two propellers (being left-handed oar or dextrorotation oar) is also corresponding opposite, must make the sense of motion of the water that each propeller promotes identical, promptly as one man backward; Each electrical motor all is fixed on the same framework, and framework then is fixed on the hull.

Machinery split shaft structure drives a main power shaft by the diesel engine on the ship (or other prime power machines) and rotates, and main power shaft then drives an auxilliary dynamical axis by gear mesh and rotates, and both gear diameters are identical, and rotating speed is identical, both direction of rotation; Then by belt-driving, make that main and auxiliary two dynamical axiss drive horizontal direction respectively, the rotating shaft to each propeller of, downward direction makes it to rotate upward, to constitute the screw propelling unit; The driven off by shaft screw propeller rotation of active force polarity is opposite with the driven off by shaft screw propeller rotation of auxilliary power polarity, and it is the dextrorotation oar that half is promptly arranged, and half is left-handed oar in addition, and the sense of motion of the water that each propeller promotes is identical, promptly as one man backward; Each rotating shaft is provided with bearing seat, is fixedly mounted on the fixed frame of hull.

The utility model has the advantages that, for same ship, under the identical condition of propulsive force, in the identical time, increase the propelling area of propeller, or the angle of rake combination of screw advances area, just can increase the quality of the water that is promoted backward by propelling unit, and reduce to be pushed rearward moving water speed (with the navigation place water body be frame of reference, think that promptly ship navigates by water in hydrostatic), thereby reduce to be pushed rearward the kinetic energy of moving water, this has just increased angle of rake capacity usage ratio, reaches purpose of energy saving.The utility model is applicable to the ship of various use propellers, and its capacity usage ratio is 2～3 times of original capacity usage ratio, and promptly its expenditure of energy is 1/2～1/3 of an original expenditure of energy.

Below in conjunction with drawings and Examples, the utility model is further described:

Fig. 1 is the organigram of the single propeller of big propelling area propeller peculiar to vessel

Fig. 2 is the organigram of the machinery-motor switching structure of big propelling area propeller peculiar to vessel

Fig. 3 is the lateral plan of Fig. 2

Fig. 4 is the organigram of the mechanical split shaft structure of big propelling area propeller peculiar to vessel

As seen from the figure, big propelling area propeller peculiar to vessel of the present utility model, when adopting single propeller, drive a double helix oar propelling unit 2 by diesel engine on the ship or electrical motor 3, the propelling area of propeller takes the gross area of the ship stern width and the ship aft draft degree of depth, side board 1 was connected with diesel engine or electrical motor after its transmission shaft 5 passed hull, and diesel engine or motor mounting are on the fixed frame 4 of hull.

Machinery-motor switching structure, drive generator for electricity generation by the diesel engine on the ship (or other prime power machines), drive the electrical motor power supply of propeller by electrical generator to each then, each electrical motor 3 drives a double helix oar propelling unit 2, make each electrical motor by being arranged on the transmission shaft 5 on the side board 1 of back, drive a double helix oar propelling unit job; The rotation direction of adjacent two electrical motors should be opposite, and the rotation polarity of adjacent two propellers (being left-handed oar or dextrorotation oar) is also corresponding opposite, must make the sense of motion of the water that each propeller promotes identical, promptly as one man backward; Each electrical motor all is fixed on the same framework 4, and framework then is fixed on the hull.

Machinery split shaft structure, drive a main power shaft 6 by the diesel engine on the ship (or other prime power machines) and rotate, main power shaft then drives an auxilliary dynamical axis 9 by gear 7,8 engagements and rotates, and both gear diameters are identical, rotating speed is identical, both direction of rotation; Then by belt 10 transmissions, make that main and auxiliary two dynamical axiss drive horizontal direction respectively, the rotating shaft to each propeller of, downward direction makes it to rotate upward, to constitute the screw propelling unit; The driven off by shaft screw propeller rotation of active force polarity is opposite with the driven off by shaft screw propeller rotation of auxilliary power polarity, it is the dextrorotation oar that half is promptly arranged, half is left-handed oar in addition, back side board 13 is passed in the rotating shaft 11 of each propeller 2, the sense of motion of the water that each propeller promotes is identical, promptly as one man backward; Each rotating shaft 11 is provided with bearing seat 12, is fixedly mounted on the fixed frame of hull.

Claims

1, a kind of big propelling area propeller peculiar to vessel is formed, be it is characterized in that by dynamical axis, screw propeller, and on side board behind the hull, be provided with a double helix oar propelling unit, it advances area to take the gross area of the ship stern width and the ship aft draft degree of depth; Its transmission shaft is connected with driving motor, and driving motor is fixed on the fixed frame of hull.

2, big propelling area propeller peculiar to vessel as claimed in claim 1 is characterized in that, on side board behind the hull, along vertical and horizontal equally spaced a plurality of propellers, the gross area of cloth boatload stern width and ship stern almost water depth of being equipped with; The transmission shaft of each screw propeller is connected with independent driving motor, adjacent electrical motor direction of rotation, and the rotation polarity of adjacent propeller is opposite; Each electrical motor all is fixed on the same framework, and framework then is fixed on the hull.

3, a kind of big propelling area propeller peculiar to vessel is made up of dynamical axis, screw propeller, it is characterized in that, on side board behind the hull, along vertical and horizontal equally spaced a plurality of propellers, the gross area of the cloth boatload stern width and the ship aft draft degree of depth of being equipped with; Main power shaft drives an auxilliary dynamical axis by gear mesh and rotates, and both gear diameters are identical; Main and auxiliary two dynamical axiss pass through the rotating shaft of the adjacent propeller of belt-driving horizontal direction, vertical direction respectively; Each rotating shaft is provided with bearing seat, is fixedly mounted on the fixed frame of hull.