CN208325592U - A kind of type variable Fishtail rudder - Google Patents
A kind of type variable Fishtail rudder Download PDFInfo
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- CN208325592U CN208325592U CN201820915242.7U CN201820915242U CN208325592U CN 208325592 U CN208325592 U CN 208325592U CN 201820915242 U CN201820915242 U CN 201820915242U CN 208325592 U CN208325592 U CN 208325592U
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- rudder
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- blade
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Abstract
The purpose of this utility model is to provide a kind of type variable Fishtail rudders, including main rudder leaf, secondary rudder blade, gear-box, it is connected between main rudder leaf and secondary rudder blade by pivot pin, upper end flowing plate is arranged in the top of main rudder leaf and secondary rudder blade, lower end flowing plate is arranged in the lower section of main rudder leaf and secondary rudder blade, main rudder leaf upper end connects long rudder stock, secondary rudder blade upper end connects short rudder stock, the gear-box includes first gear, second gear, third gear, second gear is engaged with first gear and third gear respectively, first gear is fixed on outside long rudder stock, third gear is fixed on outside short rudder stock.The utility model gear-box drives the rotational angle of secondary rudder to be greater than main rudder rotational angle, allow secondary rudder that the wake flow using propeller is more efficiently absorbed, fish tail type rudder improves the lift of rudder, is easy to turn to, ship tactical diameter is effectively shortened, the transshipment ability of rudder is substantially increased.
Description
Technical field
The utility model relates to a kind of marine propulsions, the specifically rudder of ship.
Background technique
Rudder for ship is attached to outside hull, the fluid dynamic acted on when using ship's navigation on fish tail type rudder blade and control ship
The device in course.Usually it is made of fish tail type rudder blade, rudder stock, the tubulose rudder bearer for supporting rudder stock etc..
For single plate unbalanced rudder when rudder angle is zero degree (when ship line navigation), generated towrope resistance is higher, and works as rudder angle
When increasing by zero degree, the increased amplitude of towrope resistance is little, leads to the behaviour that cannot effectively improve ship
Control performance；For single plate unbalanced rudder at 35 degree, the ship radius of gyration for installing 2.5 single plate unbalanced rudders is higher, 3 captain's single plate unbalanced rudders all just can be with
Carry out 180 degree steering.Therefore, there are also considerable room for improvement for single plate unbalanced rudder.
Overwhelming majority ship uses common steering gear at present, and the steerage of single plate unbalanced rudder is generally lower, especially in ship
When oceangoing ship lowsteaming, steerage is excessively poor.For such situation, often takes and increase flap-type rudder (pair behind single plate unbalanced rudder main rudder
Rudder) mode improve the lift coefficient and steerage of rudder.
Summary of the invention
The purpose of this utility model is to provide can solve the problems such as unbalance rudder maneuvering performance is poor, steering moment is big
A kind of type variable Fishtail rudder.
Purpose of the utility model is realized as follows:
A kind of type variable Fishtail rudder of the utility model, it is characterized in that: include main rudder leaf, secondary rudder blade, gear-box, main rudder leaf with
It is connected between secondary rudder blade by pivot pin, the top setting upper end flowing plate of main rudder leaf and secondary rudder blade, under main rudder leaf and secondary rudder blade
Side's setting lower end flowing plate, main rudder leaf upper end connect long rudder stock, and secondary rudder blade upper end connects short rudder stock, and the gear-box includes first
Gear, second gear, third gear, second gear are engaged with first gear and third gear respectively, and first gear is fixed on length
Outside rudder stock, third gear is fixed on outside short rudder stock.
The utility model can also include:
1, the number of teeth of first gear is greater than the number of teeth of third gear.
2, when main rudder leaf is in amidship position, what secondary rudder blade was straight is in propeller centre position.
The advantage of the utility model is:
1, fish tail type rudder improves the lift of rudder, is easy to turn to, turning radius is smaller than single plate unbalanced rudder.
2, gear-box drives the rotational angle of secondary rudder to be greater than main rudder rotational angle, allows secondary rudder that benefit is more efficiently absorbed
With the wake flow of propeller, the transshipment ability of rudder is substantially increased.
3, only there are three gears to form for gear-box, and structure is simple, easy to repair.
4, steerage when marine low speed navigation can be improved.
5, ship tactical diameter is effectively shortened.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the utility model gear box structure schematic diagram；
Fig. 3 is that the utility model can be changed rudder blade bottom view.
Specific embodiment
It illustrates with reference to the accompanying drawing and the utility model is described in more detail:
In conjunction with Fig. 1-3, a kind of type variable Fishtail rudder, comprising: gear-box 5, main rudder leaf 1, secondary rudder blade 2, long rudder stock 3, short rudder
Bar 4 and pivot pin.1 upper end of main rudder leaf is connected with long rudder stock 3, and secondary 2 upper end of rudder blade connects short rudder stock 4.Long rudder stock 3 and short rudder stock 4
Between connected by gear-box 5, it is ensured that secondary 2 rotational angle of rudder blade be greater than main rudder leaf 1.
Main rudder leaf 1 is connected with secondary rudder blade 2 by pivot pin.
Main rudder leaf 1 and 2 upper end of secondary rudder blade are equipped with upper end flowing plate, and lower end is equipped with lower end flowing plate.
Three gears not of uniform size are disposed in gear-box 5, the number of teeth of gear 8 is less than the number of teeth of gear 6.
As shown in figure 3, major and minor rudder blade passes through pivot pin connection, generally fish type.
In practical applications, when main rudder 1 is in amidship position, what secondary rudder 2 was straight is being in propeller just to the utility model
Central location.When coming about, the swing and long rudder stock 3 of power that secondary rudder 2 rotates from main rudder 1 by the drive of gear-box, when
When rudder stock 3 drives main rudder 1,1 rear of main rudder will be swung, while be rotated with moving gear 6, by the transmission between gear, so that
The corner of secondary rudder 2 is greater than main rudder 1.In this way, when coming about, the corner of pair rudder 2 can effectively absorb the tail using propeller
Stream, substantially increases the transshipment ability of rudder.
Claims (3)
1. a kind of type variable Fishtail rudder leads between main rudder leaf and secondary rudder blade it is characterized in that: including main rudder leaf, secondary rudder blade, gear-box
Pivot pin connection is crossed, the top setting upper end flowing plate of main rudder leaf and secondary rudder blade, lower end system is arranged in main rudder leaf and the lower section of secondary rudder blade
Flowing plate, main rudder leaf upper end connect long rudder stock, and secondary rudder blade upper end connects short rudder stock, and the gear-box includes first gear, the second tooth
Wheel, third gear, second gear are engaged with first gear and third gear respectively, and first gear is fixed on outside long rudder stock, the
Three gears are fixed on outside short rudder stock.
2. a kind of type variable Fishtail rudder according to claim 1, it is characterized in that: the number of teeth of first gear is greater than third gear
The number of teeth.
3. a kind of type variable Fishtail rudder according to claim 1 or 2, it is characterized in that: when main rudder leaf is in amidship position,
What secondary rudder blade was straight is in propeller centre position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915242.7U CN208325592U (en) | 2018-06-13 | 2018-06-13 | A kind of type variable Fishtail rudder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915242.7U CN208325592U (en) | 2018-06-13 | 2018-06-13 | A kind of type variable Fishtail rudder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208325592U true CN208325592U (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820915242.7U Active CN208325592U (en) | 2018-06-13 | 2018-06-13 | A kind of type variable Fishtail rudder |
Country Status (1)
| Country | Link |
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| CN (1) | CN208325592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725732A (en) * | 2018-06-13 | 2018-11-02 | 哈尔滨工程大学 | A kind of type variable Fishtail rudder |
-
2018
- 2018-06-13 CN CN201820915242.7U patent/CN208325592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725732A (en) * | 2018-06-13 | 2018-11-02 | 哈尔滨工程大学 | A kind of type variable Fishtail rudder |
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