CN2040881U - Automatic moment-changing oar - Google Patents
Automatic moment-changing oar Download PDFInfo
- Publication number
- CN2040881U CN2040881U CN 88220937 CN88220937U CN2040881U CN 2040881 U CN2040881 U CN 2040881U CN 88220937 CN88220937 CN 88220937 CN 88220937 U CN88220937 U CN 88220937U CN 2040881 U CN2040881 U CN 2040881U
- Authority
- CN
- China
- Prior art keywords
- propeller hub
- bolster
- oar
- quant
- propeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Abstract
The utility model relates to the oar used on marine propulsion, comprising propeller hubs, and at least 3 blades with supporting axle arranged on the propeller hubs. Convex keys are arranged on the supporting axle, and can rotate in the fitting holes of the propeller hubs; the angle of the rotation is limited by the mould cavity of the propeller hubs. Based on the oar state, the automatic moment-changing oar can automatically change the moment to decrease the march resistance force without adding the auxiliary power unit in the process of working. The utility model has the advantages of simple structure, low cost, and convenient operation, and can be especially used for low speed and low tonnage marine.
Description
The utility model relates to the quant that marine propeller is used, and especially is fit to low speed, low tonnage boats and ships use.
The pitch of the quant that existing marine propeller is used all is changeless, therefore when blade stop the rotation and ship still in traveling process, thisly decide the square oar and just become the resistance of shipping agency in advancing.Once the someone had designed a kind of hydraulic pressure bending moment oar, and the blade of this oar can change pitch according to the state of boats and ships operation, but owing to adopts hydraulic pressure as auxiliary power, so complex structure, troublesome poeration and cost are also high.
The purpose of this utility model is to design a kind of simple in structure, easy to use, automatic torque-changing quant that cost is low.
The utility model design-calculated quant is made up of propeller hub 2 and 3 blades 1 of being installed on the propeller hub 2 at least.Bolster 4 is all arranged on the blade root of each blade, and an end of bolster has protruding key 5, and the hole that allows bolster to rotate, the die cavity 6 of restricted blade rotation angle on the appropriate location in hole are arranged on the propeller hub by the dress blade.
General quant all is with 4 blades on propeller hub, blade and bolster can be whole, also can be fabricate blocks, and protruding key and bolster can be whole, also can be fabricate blocks.For improving the degree of stability of blade, protruding key should be positioned at the place, end of bolster.The leading section of propeller hub is connected with main cardan shaft, and rearward end is a tail cup 3.For can be easily by the bolster of dress with protruding key, propeller hub and back propeller hub before with the plane, axis place in hole propeller hub being divided into adopt removable connection in aggregates between the propeller hub of front and back.The shape of die cavity is decided on protruding key, but must make blade revolve under the blade sheet mode of operation can with the angled α of main driving axle, parallel with main driving axle under off working state.The α angle be material elements design-calculated pitch such as the power, tonnage according to boats and ships and definite, angle commonly used is 45 ° and 60 °.
The quant that can rotate automatically in the propeller hub die cavity with the bolster of protruding key as press when the ω direction is rotated among Fig. 3 when work, and blade is at power F
1And F
2Effect can be automatically brought to down the position of the pitch α of setting, play the effect that boats and ships advance that promotes; When quant stopped the rotation, blade was at the power F of current
3And F
4Effect under change the α angular convolution again automatically to feather position, thereby do not produce and decide the distinctive resistance of square oar.
The utility model design-calculated quant is simple in structure, need not set up the ability that Auxiliary Power Unit just has automatic torque-changing.Promptly in the boats and ships operational process, under the application force of current, quant can be in the pitch and the feathering state of setting respectively with revolving the in running order and automatic change of direction of off position of oar.
Fig. 1 is the quant birds-eye view.
Fig. 2 is the A-A section-drawing of Fig. 1.
Fig. 3 is subjected to the scheme drawing of bourn acting force when rotating for blade.
Fig. 4 is subjected to the scheme drawing of bourn acting force when not rotating for blade.
Embodiment:
The design-calculated quant has four blades and evenly is installed in around the propeller hub.Blade is made with corrosion-resistant steel, and blade, bolster, protruding key are integral structure, and the shape of protruding key allows angle [alpha]=60 ° of blade rotation in the die cavity as shown in Figure 2.Bolster is contained in the hole that has die cavity on the propeller hub, and propeller hub is made with nylon, and its front and rear part sticks with glue and connects, and low speed of a ship or plane auxiliary engine sailer and on-inflatable type life boat, small-sized non-motor-driven carrier that the quant of making is fit to below 35 tonnes use.
Claims (2)
1, the quant used of a kind of marine propeller, it by propeller hub 2, be installed on the propeller hub 2 and at least 3 blades 1 of having a bolster 4 are formed, it is characterized in that:
[1] hole that cooperates with bolster is arranged on the corresponding site of said propeller hub 2, the die cavity of restricted blade rotation angle on the appropriate location in hole,
[2] protruding key 5 is arranged on the said bolster, said bolster 4 with protruding key can rotate in the hole,
[3] said propeller hub is a combined member, with the propeller hub separated into two parts, adopts the formula of tearing open to connect with the plane, axis place in hole between them.
2,, it is characterized in that the said removable screw that is connected to connects by the said quant of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220937 CN2040881U (en) | 1988-12-16 | 1988-12-16 | Automatic moment-changing oar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220937 CN2040881U (en) | 1988-12-16 | 1988-12-16 | Automatic moment-changing oar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2040881U true CN2040881U (en) | 1989-07-12 |
Family
ID=4853059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88220937 Withdrawn CN2040881U (en) | 1988-12-16 | 1988-12-16 | Automatic moment-changing oar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2040881U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050219A (en) * | 2010-12-29 | 2011-05-11 | 广州中船龙穴造船有限公司 | Controllable pitch propeller for ship |
| CN105984573A (en) * | 2015-02-15 | 2016-10-05 | 朱经纬 | Rotating device capable of changing blade-paddle angles |
| CN110344988A (en) * | 2019-07-15 | 2019-10-18 | 东北师范大学 | A kind of horizontal axis tidal current energy hydraulic turbine experiment assistor and its application method |
-
1988
- 1988-12-16 CN CN 88220937 patent/CN2040881U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050219A (en) * | 2010-12-29 | 2011-05-11 | 广州中船龙穴造船有限公司 | Controllable pitch propeller for ship |
| CN105984573A (en) * | 2015-02-15 | 2016-10-05 | 朱经纬 | Rotating device capable of changing blade-paddle angles |
| CN105984573B (en) * | 2015-02-15 | 2018-11-27 | 朱经纬 | A kind of rotating device that can change leaf propeller angle |
| CN110344988A (en) * | 2019-07-15 | 2019-10-18 | 东北师范大学 | A kind of horizontal axis tidal current energy hydraulic turbine experiment assistor and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |