CN204846349U - Rudder blade of anti cavitation erosion - Google Patents
Rudder blade of anti cavitation erosion Download PDFInfo
- Publication number
- CN204846349U CN204846349U CN201520549084.4U CN201520549084U CN204846349U CN 204846349 U CN204846349 U CN 204846349U CN 201520549084 U CN201520549084 U CN 201520549084U CN 204846349 U CN204846349 U CN 204846349U
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- Prior art keywords
- rudder blade
- polyurethane elastomer
- blade body
- elastomer layer
- good
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Abstract
The utility model discloses a rudder blade of anti cavitation erosion, including the rudder blade body and the parcel polyurethane elastomer layer on rudder blade external surface, be provided with vertically and horizontally staggered's strengthening rib strip on the surface of the rudder blade body. The utility model discloses rudder blade of anti cavitation erosion, it is through setting up the polyurethane elastomer layer on the rudder blade surface, polyurethane elastomer has good wearability, hardness is big, the flue is high in intensity, good elasticity, it is low temperature resistant, and there is good resistant oil, resistant chemical and resistant environmental performance, it can cushion the impact force that the bubble bursts and produces, the protection rudder blade body is avoided the cavitation erosion and is damaged, simultaneously can oppose aquatic chemical, gravel etc. Are to its wearing and tearing and corruption, protective properties to the rudder blade body is good, the maintenance cost of reduction rudder blade that can be very big.
Description
Technical field
The utility model relates to a kind of ship parts, particularly a kind of rudder for ship.
Background technology
Rudder for ship is attached to outside hull, utilizes and acts on the dynaflow on rudder blade during ship's navigation and the device controlling ship course, be usually made up of rudder blade and rudder stock.
Found by research, there is an obvious meiobar in the rear, center promoting the screw propeller of boats and ships, in water, dissolved gases can be separated out, and bubbly flow can break to during higher-pressure region, and the impulsive force produced that breaks causes cavitation erosion to rudder blade surface.And in prior art, rudder blade is generally integral structure, when a rudder blade part is damaged, need to carry out integral replacing to rudder blade, maintenance cost is high.
The usual method of current solution rudder blade cavitation erosion problem has: at rudder blade electroplating surface hard chromium layers or at rudder blade surface soldered high-strength alloy layer; But there is the problems such as coating is thinner, used life is limited, large part intractability is large at rudder blade electroplating surface hard chromium layers, and rudder blade surface soldered high-strength alloy layer exist matrix yielding, be only applicable to the problem such as Local treatment.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of rudder blade of anti-cavitation, to solve the problem that rudder blade easily suffers air corrosion.
The rudder blade of the utility model anti-cavitation, comprises rudder blade body and is wrapped in the polyurethane elastomer layer on rudder blade external surface.
Further, the outside face of described rudder blade body is provided with crisscross strengthening rib strip.
Further, the integral structure that is formed in one of described rudder blade body and strengthening rib strip.
Further, described polyurethane elastomer layer is the integral structure be molded over by pouring type on rudder blade external surface.
Further, described polyurethane elastomer layer is the sectional construction be made up of some cell blocks, and described cell block is fixed by screws on rudder blade external surface.
The beneficial effects of the utility model:
The rudder blade of the utility model anti-cavitation; it by arranging polyurethane elastomer layer on rudder blade outside face; polyurethane elastomer has good resistance to abrasion, hardness is large, intensity is high, good springiness, low temperature resistant; and have good oil resistant, chemical-resistant resistance and environmental resistance; it can cushion the impulsive force that bubble eruption produces; protection rudder blade body damages from cavitation erosion; simultaneously can to the abrasion and corrosion to it of chemical substance, gravel etc. in water resistant; good to the protective value of rudder blade body, the maintenance cost of reduction rudder blade that can be very large.
Accompanying drawing explanation
Fig. 1 is the perspective view of rudder blade body in the rudder blade of the utility model anti-cavitation;
Fig. 2 is the perspective view of the rudder blade of the utility model anti-cavitation.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in the figure, the rudder blade of the present embodiment anti-cavitation, the polyurethane elastomer layer 2 comprising rudder blade body 1 and be wrapped on rudder blade external surface.
The rudder blade of the present embodiment anti-cavitation; it by arranging polyurethane elastomer layer on rudder blade outside face; polyurethane elastomer has good resistance to abrasion, hardness is large, intensity is high, good springiness, low temperature resistant; and have good oil resistant, chemical-resistant resistance and environmental resistance; it can cushion the impulsive force that bubble eruption produces; protection rudder blade body damages from cavitation erosion; simultaneously can to the abrasion and corrosion to it of chemical substance, gravel etc. in water resistant; good to the protective value of rudder blade body, the maintenance cost of reduction rudder blade that can be very large.
As the improvement to the present embodiment, the outside face of described rudder blade body is provided with crisscross strengthening rib strip 3, strengthening rib strip 3 can strengthen shock resistance, the anti-shear performance of rudder blade body, makes the intensity of rudder blade body higher; Strengthening rib strip 3 can strengthen fixing polyurethane elastomer layer 2 simultaneously, strengthens the anti-shearing slip-off preventing ability of polyurethane elastomer layer 2.
As the improvement to the present embodiment, the integral structure that described rudder blade body 1 and strengthening rib strip 3 are formed in one, in concrete enforcement, rudder blade body 1 and strengthening rib strip 3 adopt forging type one-body molded, relative to the rudder blade adopting welding manner shaping, its good integrity, intensity is higher, and manufacturing process is simpler.
As the improvement to the present embodiment, described polyurethane elastomer layer 2 is the integral structure be molded over by pouring type on rudder blade external surface, integral structure makes the intensity of polyurethane elastomer layer 2 better, and moulding by casting makes the connection of itself and rudder blade body more firm on rudder blade body, the polyurethane elastomer layer 2 of integral structure is suitable for small-sized rudder blade.
Certainly in various embodiments, described polyurethane elastomer layer 2 also can for the sectional construction be made up of some cell blocks, described cell block is fixed by screws on rudder blade external surface, the polyurethane elastomer layer 2 of sectional construction is applicable to large-sized rudder blade, manufacture simple, and change maintenance when a certain cell block damages easily.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a rudder blade for anti-cavitation, is characterized in that: comprise rudder blade body and be wrapped in the polyurethane elastomer layer on rudder blade external surface.
2. the rudder blade of anti-cavitation according to claim 1, is characterized in that: the outside face of described rudder blade body is provided with crisscross strengthening rib strip.
3. the rudder blade of anti-cavitation according to claim 2, is characterized in that: the integral structure that described rudder blade body and strengthening rib strip are formed in one.
4. the rudder blade of anti-cavitation according to claim 2, is characterized in that: described polyurethane elastomer layer is the integral structure be molded over by pouring type on rudder blade external surface.
5. the rudder blade of anti-cavitation according to claim 2, is characterized in that: described polyurethane elastomer layer is the sectional construction be made up of some cell blocks, and described cell block is fixed by screws on rudder blade external surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549084.4U CN204846349U (en) | 2015-07-27 | 2015-07-27 | Rudder blade of anti cavitation erosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549084.4U CN204846349U (en) | 2015-07-27 | 2015-07-27 | Rudder blade of anti cavitation erosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204846349U true CN204846349U (en) | 2015-12-09 |
Family
ID=54736924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520549084.4U Expired - Fee Related CN204846349U (en) | 2015-07-27 | 2015-07-27 | Rudder blade of anti cavitation erosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204846349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587968A (en) * | 2017-08-09 | 2018-01-16 | 浙江大学 | A kind of anti-cavitation corrosion structural facer |
-
2015
- 2015-07-27 CN CN201520549084.4U patent/CN204846349U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587968A (en) * | 2017-08-09 | 2018-01-16 | 浙江大学 | A kind of anti-cavitation corrosion structural facer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |