CN103680281A - Variable-torque propeller for teaching - Google Patents
Variable-torque propeller for teaching Download PDFInfo
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- CN103680281A CN103680281A CN201210376362.1A CN201210376362A CN103680281A CN 103680281 A CN103680281 A CN 103680281A CN 201210376362 A CN201210376362 A CN 201210376362A CN 103680281 A CN103680281 A CN 103680281A
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- teaching
- screw propeller
- propeller
- rack
- variable
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Abstract
The invention provides a variable-torque propeller for teaching and belongs to the field of variable-torque propellers. The variable-torque propeller comprises a drive rod for driving circumferential and axial motions, fixed connection pins, a rack-and-pinion mechanism, a propeller suit and a helical bevel gear suit, wherein circumferential and axial motions of the fixed connection pins are mutually not interfering, the rack-and-pinion mechanism has a self-locking function, three blades rotate at the same time, rotation angles of the three blades are in the same direction and of a same value, and the modulus of the gear and the modulus of a tooth bar are identical. With the variable-torque propeller for teaching provided by the invention adopted, knowledge about principles of changing of torques of the blades of the propeller is simply presented in the fields of basic teaching, navigation teaching and shipbuilding teaching through simple mechanical mechanisms, i.e., the rack-and-pinion mechanism and the helical bevel gear suit.
Description
Technical field
The present invention relates to bending moment screw propeller field, especially, is a kind of for elementary teaching, navigation teaching, the simple and clear teaching bending moment screw propeller of showing bending moment principle of propeller of shipbuilding teaching.
Background technology
Along with the attention of country to student's elementary teaching, set forth corresponding principle and show that class teaching has also obtained high speed development with instrument.In bending moment screw propeller field, we see the application of bending moment screw propeller through practical fields such as the propeller for vessels of being everlasting, airscrew, wind-power electricity generation screw propellers, and at elementary teaching, navigation teaching, shipbuilding teaching field, can not show concisely the relative theory knowledge of bending moment screw propeller.For this kind of bending moment screw propeller, at elementary teaching, navigation teaching, shipbuilding teaching field, there is no the exhibit of this type of performance bending moment screw propeller relative theory knowledge.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of teaching bending moment screw propeller, this device can represent concisely by simple mechanical mechanism the principle knowledge of propeller blade bending moment: by changing the pitch angle of each blade of screw propeller, change output torque, namely in the situation that rotating speed is constant, can change airscrew thrust.
The technical solution adopted for the present invention to solve the technical problems is: this teaching is driven by common permanent power low speed (speed is less than 300n/min) motor with bending moment screw propeller power output, by helical teeth cone gear, carry out the transmission of concurrent aces, by rack-and-pinion transmission, change the pitch angle of propeller blade, wherein the power resources of propeller blade tilt angle varied in manually wheel, thereby show the corresponding principle knowledge of bending moment screw propeller more vividly.
As preferably, described fixed pin does not interfere with each other in circumferential, axial direction action.
As preferably, described helical teeth cone gear material is poly-tetrachloro or nylon.
As preferably, described rack-and-pinion material is that rust-preventing characteristic is good, non-lubricating aldary or dualumin alloy.
As preferably, described paddle material is nonmetallic materials.
As optimization, described pinion and rack has auto-lock function.
As optimization, described three blades move while rotating simultaneously, and the direction of rotational angle is identical, in the same size.
As optimization, the modulus of described gear, tooth bar is identical.
Teaching involved in the present invention, is installed the corresponding parts of processing such as requirement of reasonableness, and is assembled according to standard according to corresponding industrial requirements, technical requirement, dimensional requirement, processing with bending moment screw propeller when making.
The invention has the advantages that: can pass through simple visible mechanical mechanism, the principle knowledge that vivid representing of understanding, bending moment screw propeller was stressed, power changes process.
Accompanying drawing explanation
Fig. 1 is the elevational cross-sectional view of this teaching with bending moment screw propeller embodiment.
Fig. 2 is that the A-A of figure mono-embodiment is to sectional view.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1-Fig. 2 is embodiments of the invention, in this embodiment, this bending moment screw propeller comprises manually wheel 1, the backstay 2 in axial direction sliding in groove, power output motor 3, helical teeth cone gear combination 4, convenient rotation the outer hollow cylinder 5 that is equivalent to be fixed as one with bearing 6, with backstay 2 at the axial bearing 6 of action simultaneously, for what drive link 9 and axostylus axostyle 10 were moved when circumferentially rotating simultaneously, be fixedly connected with pin 7, rack-and-pinion transmission combination 8, the drive link 9 circumferentially rotating for drving sprial oar transmission combination 11, the axostylus axostyle 10 that is used for support helix oar transmission combination 1 and slides vertically, screw propeller transmission combination 11.Wherein screw propeller transmission combination 11 is comprised of hollow cylinder 11-2, blade 11-3, the semi-circle gear 11-4 of tooth bar 11-1, connection blade 11-3 and semi-circle gear 11-4.
Manually, wheel 1 rotation driven gear rack-driving combination 8 actions, because the tooth bar in rack-and-pinion transmission combination 8 and backstay 2 move at axial direction simultaneously, make backstay 2 in axial direction slip in groove; Because outer hollow cylinder 5, bearing 6, axostylus axostyle 10 move at axial direction with backstay 2 simultaneously, backstay 2 actions move axostylus axostyle 10 while moving vertically vertically; Because axostylus axostyle 10 and tooth bar 11-1 are equivalent to one, axostylus axostyle 10 moves vertically and makes the rack-and-pinion combination action of tooth bar 11-1 and semi-circle gear 11-4, thereby by the rack-and-pinion combination of the present tooth bar 11-1 of the action number of teeth, the offset table of rack-and-pinion transmission combination 8 and semi-circle gear 11-4; Because hollow cylinder 11-2, semi-circle gear 11-4 and blade 11-3 are moving around hollow cylinder 11-2 circumferential direction simultaneously, when tooth bar 11-1 moves vertically, the pitch angle of blade 11-3 changes.
Motor 3 rotates and drives helical teeth cone gear combination 4 actions, because being fixedly connected with pin 7, fixedly make both in circumferential direction, move drive link 9 and axostylus axostyle 10 simultaneously, because the cone gear on axostylus axostyle 10 and drive link 9 are fixed as one, both are moved in circumferential direction again simultaneously, make helical teeth cone gear combination 4 actions drive screw propellers combination 11 to do circumferentially to rotate around axostylus axostyle 10.
Claims (3)
1. a teaching bending moment screw propeller, comprise manually wheel 1, the backstay 2 in axial direction sliding in groove, power output motor 3, helical teeth cone gear combination 4, convenient rotation the outer hollow cylinder 5 that is equivalent to be fixed as one with bearing 6, with backstay 2 at the axial bearing 6 of action simultaneously, for what drive link 9 and axostylus axostyle 10 were moved when circumferentially rotating simultaneously, be fixedly connected with pin 7, rack-and-pinion transmission combination 8, the drive link 9 circumferentially rotating for drving sprial oar transmission combination 11, the axostylus axostyle 10 that is used for support helix oar transmission combination 11 and slides vertically, screw propeller transmission combination 11, wherein screw propeller transmission combination 11 is by tooth bar 11-1, the hollow cylinder 11-2 that connects blade 11-3 and semi-circle gear 11-4, blade 11-3, semi-circle gear 11-4 forms, it is characterized in that: described in be fixedly connected with pin 7 circumferentially, axial direction action does not interfere with each other.
2. teaching according to claim 1 bending moment screw propeller, is characterized in that: described in each, pinion and rack has auto-lock function.
3. teaching according to claim 1 bending moment screw propeller, is characterized in that: described three blade 11-3 move while rotating simultaneously, and the direction of rotational angle is identical, in the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376362.1A CN103680281A (en) | 2012-09-23 | 2012-09-23 | Variable-torque propeller for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376362.1A CN103680281A (en) | 2012-09-23 | 2012-09-23 | Variable-torque propeller for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103680281A true CN103680281A (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210376362.1A Pending CN103680281A (en) | 2012-09-23 | 2012-09-23 | Variable-torque propeller for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103680281A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881952A (en) * | 2014-04-03 | 2014-06-25 | 大连理工大学 | Bacillus amyloliquefaciens and an application thereof as well as method for preparing kelp feed |
| CN108999744A (en) * | 2018-08-14 | 2018-12-14 | 南京信息工程大学 | A kind of teaching type wind-driven generator pitching linkage mechanism |
-
2012
- 2012-09-23 CN CN201210376362.1A patent/CN103680281A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881952A (en) * | 2014-04-03 | 2014-06-25 | 大连理工大学 | Bacillus amyloliquefaciens and an application thereof as well as method for preparing kelp feed |
| CN108999744A (en) * | 2018-08-14 | 2018-12-14 | 南京信息工程大学 | A kind of teaching type wind-driven generator pitching linkage mechanism |
| CN108999744B (en) * | 2018-08-14 | 2023-07-04 | 南京信息工程大学 | Variable pitch linkage mechanism of teaching type wind driven generator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |