CN214748628U - Composite material propeller rotational inertia detection device - Google Patents
Composite material propeller rotational inertia detection device Download PDFInfo
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- CN214748628U CN214748628U CN202120435444.3U CN202120435444U CN214748628U CN 214748628 U CN214748628 U CN 214748628U CN 202120435444 U CN202120435444 U CN 202120435444U CN 214748628 U CN214748628 U CN 214748628U
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- turntable
- propeller
- support
- base plate
- inertia
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Abstract
The utility model discloses a combined material screw inertia check out test set, including support, last carousel, lower carousel, infrared counter and connecting wire, wherein: the upper turntable is vertically and rotatably mounted on the support, the lower turntable is positioned below the upper turntable and opposite to the lower turntable, and the lower turntable is connected with the upper turntable through a connecting wire; the lower rotary table is provided with a fixing hole for fixing the propeller, and the axis of the fixing hole is superposed with the axis of the upper rotary table; the infrared counter is installed on the support and is used for counting the period of the rectification of the propeller. The utility model discloses in, combined material screw inertia check out test set that provides puts down the carousel with the screw that awaits measuring, rotates and goes up the carousel to the connecting wire drives down the disc, measures the rotation cycle of screw, calculates the inertia of screw, has solved the inconvenient technical problem of screw inertia detection, easy operation.
Description
Technical Field
The utility model relates to a screw check out test set technical field especially relates to a combined material screw inertia check out test set.
Background
The moment of inertia is a measure of the inertia of a rigid body when it rotates, the magnitude of which depends on the shape of the object, the mass distribution and the position of the axis of rotation. The rotary inertia of the propeller has important significance for the space engine, if the rotary inertia of the propeller is not matched with the engine, a speed change gear of the engine is seriously damaged, and the service life and the flying efficiency of the engine are greatly shortened. However, the composite propeller has a complex structure, mass distribution is not uniform, accurate rotational inertia cannot be obtained through theoretical calculation, and the rotational inertia of the propeller can be accurately measured only through an experimental method, so that the detection method and the detection equipment are more important.
At present, no equipment for detecting the rotational inertia of the propeller exists in the domestic market, most of the equipment for detecting the rotational inertia of objects exists in college laboratories, scientific institutions and the like, the equipment is used for experimental teaching, and test articles are mainly small pieces smaller than 1 kg.
Therefore, the design and manufacture of equipment for measuring the rotational inertia of the propeller are urgently needed, the blank of the technical parameter of the domestic propeller is filled, and the market demand is met.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution background art, the utility model provides a combined material screw inertia check out test set.
The utility model provides a pair of combined material screw inertia check out test set, including support, last carousel, lower carousel, infrared counter and connecting wire, wherein:
the upper turntable is vertically and rotatably mounted on the support, the lower turntable is positioned below the upper turntable and opposite to the lower turntable, and the lower turntable is connected with the upper turntable through a connecting wire;
the lower rotary table is provided with a fixing hole for fixing the propeller, and the axis of the fixing hole is superposed with the axis of the upper rotary table;
the infrared counter is installed on the support and is used for counting the period of the rectification of the propeller.
As the utility model discloses the scheme of further optimization, the support includes supporting baseplate, bracing piece and goes up the mounting panel, goes up the mounting panel and passes through the bracing piece to be installed on supporting baseplate, goes up the mounting panel and is located supporting baseplate top and relative with supporting baseplate, goes up the carousel and installs on last mounting panel.
As the utility model discloses the scheme of further optimization, supporting baseplate has the fretwork opening, and the fretwork opening is relative with the fixed orifices.
As a further optimization scheme of the utility model, the maximum opening width of the hollow-out opening is smaller than the outer diameter of the lower turntable.
As a further optimized proposal of the utility model, the supporting bottom plate is Y-shaped.
As a further preferred solution of the present invention, the bottom of the support base is provided with a support plate.
As a further optimized solution of the present invention, the outer diameter of the supporting disk gradually increases from top to bottom.
As a further optimized scheme of the utility model, the connecting wire is equipped with three and evenly distributed at last carousel and between the lower carousel.
As a further optimized scheme of the utility model, the connecting wire is the stereoplasm line.
The utility model discloses in, combined material screw inertia check out test set that provides puts down the carousel with the screw that awaits measuring, rotates and goes up the carousel to the connecting wire drives down the disc, measures the rotation cycle of screw, calculates the inertia of screw, refers to energy conservation principle and parallel axis theorem, and the inertia of object is calculated to the mode that the application three-line was put, and concrete formula is: I-mgRr/4 pi2H(T)2The technical problem that the detection of the rotational inertia of the propeller is inconvenient is solved, and the operation is simple.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a top view of the present invention;
fig. 4 is a left side view of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
1-4, the detection equipment for the rotational inertia of the composite propeller comprises a support 1, an upper rotary table 2, a lower rotary table 3, an infrared counter 4 and a connecting line 5, wherein:
the upper rotary table 2 is vertically and rotatably arranged on the bracket 1, the lower rotary table 3 is positioned below the upper rotary table 2 and opposite to the lower rotary table 3, and the lower rotary table 3 is connected with the upper rotary table 2 through a connecting wire 5;
the lower rotary table 3 is provided with a fixing hole 30, the fixing hole 30 is used for fixing the propeller, and the axis of the fixing hole 30 is superposed with the axis of the upper rotary table 2;
the infrared counter 4 is installed on the bracket 1 and is used for counting the period of the screw rotor being straightened.
The support 1 comprises a support base plate 10, a support rod 11 and an upper mounting plate 12, the upper mounting plate 12 is mounted on the support base plate 10 through the support rod 11, the upper mounting plate 12 is located above the support base plate 10 and opposite to the support base plate 10, the upper rotary table 2 is mounted on the upper mounting plate 12, the lower rotary table 3 is located between the upper rotary table 2 and the lower support base plate 10, the upper rotary table 2 and the lower rotary table 3 are mounted, and the stability of the device is improved;
the supporting bottom plate 10 is provided with the hollowed-out openings 100, the hollowed-out openings 100 are opposite to the fixing holes 30, space is saved, the quality of the device is reduced, transportation is facilitated, and cost is reduced simultaneously, the maximum opening width of the hollowed-out openings 100 is smaller than the outer diameter of the lower rotary table 3, the stability of the device is improved, the distance of free falling bodies of the lower rotary table 3 is reduced after the connecting line 5 is broken, the supporting bottom plate 10 is Y-shaped, the structure is simple, and manufacturing is facilitated;
the bottom of the supporting bottom plate 10 is provided with a supporting plate 6, so that the stability of the device placed on the ground is improved, and in order to improve the stability of the device, the outer diameter of the supporting plate 6 is gradually increased from top to bottom;
in order to increase the steadiness of connecting between carousel 2 and the lower carousel 3, connecting wire 5 is equipped with three and evenly distributed and goes up between carousel 2 and the lower carousel 3, and connecting wire 5 is the stereoplasm line, avoids taking place elastic deformation at rotation in-process connecting wire 5, further increases the detection precision.
In the working process of the embodiment: put carousel 3 down with the screw that awaits measuring, rotate carousel 2 to the disc under connecting wire 5 drives, measure the rotation period of screw, calculate the inertia of screw, refer to energy conservation principle and parallel axis theorem, the inertia of the mode calculation object of application three-line pendulum, specific formula is: I-mgRr/4 pi2H(T)2The technical problem that the detection of the rotational inertia of the propeller is inconvenient is solved, and the operation is simple.
In this embodiment, it is preferable that the support 1 includes a support base plate 10, a support rod 11 and an upper mounting plate 12, the upper mounting plate 12 is mounted on the support base plate 10 through the support rod 11, the upper mounting plate 12 is located above the support base plate 10 and opposite to the support base plate 10, the upper turntable 2 is mounted on the upper mounting plate 12, the lower turntable 3 is located between the upper turntable 2 and the lower support base plate 10, the upper turntable 2 and the lower turntable 3 are mounted, and the stability of the device is improved.
In the embodiment, preferably, the supporting base plate 10 has the hollow opening 100, and the hollow opening 100 is opposite to the fixing hole 30, so that the space is saved, the quality of the device is reduced, the transportation is facilitated, and the cost is reduced.
In this embodiment, it is preferable that the maximum opening width of the hollow opening 100 is smaller than the outer diameter of the lower rotary table 3, so as to increase the stability of the device, and reduce the distance of the free falling body of the lower rotary table 3 after the connecting wire 5 is broken.
In the present embodiment, the supporting base plate 10 is preferably Y-shaped, and has a simple structure and is easy to manufacture.
In the present embodiment, it is preferable that the bottom of the supporting base plate 10 is provided with the supporting plate 6, so as to increase the stability of the supporting base plate when the supporting base plate is placed on the ground.
In order to increase the stability of the device, it is preferable in this embodiment that the outer diameter of the support disc 6 is gradually increased from top to bottom.
In order to increase the stability of the connection between the upper turntable 2 and the lower turntable 3, it is preferred in this embodiment that the connection lines 5 are provided in three and evenly distributed between the upper turntable 2 and the lower turntable 3.
In this embodiment, it is preferable that the connection line 5 is a hard line, so that the connection line 5 is prevented from being elastically deformed during rotation, and the detection accuracy is further increased.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a combined material screw inertia check out test set which characterized in that, includes support (1), last carousel (2), carousel (3), infrared counter (4) and connecting wire (5), wherein:
the upper turntable (2) is vertically and rotatably arranged on the bracket (1), the lower turntable (3) is positioned below the upper turntable (2) and opposite to the lower turntable (3), and the lower turntable (3) is connected with the upper turntable (2) through a connecting wire (5);
the lower turntable (3) is provided with a fixing hole (30), the fixing hole (30) is used for fixing the propeller, and the axis of the fixing hole (30) is superposed with the axis of the upper turntable (2) in rotation;
the infrared counter (4) is installed on the support (1) and used for counting the swing period of the propeller.
2. Composite propeller moment of inertia detection device according to claim 1, wherein the bracket (1) comprises a support base plate (10), a support bar (11) and an upper mounting plate (12), the upper mounting plate (12) being mounted on the support base plate (10) by means of the support bar (11), the upper mounting plate (12) being located above the support base plate (10) and opposite to the support base plate (10), the upper turntable (2) being mounted on the upper mounting plate (12).
3. The composite material propeller moment of inertia detection apparatus of claim 2, wherein the support base plate (10) has a hollowed opening (100), the hollowed opening (100) being opposite to the fixing hole (30).
4. The composite material propeller rotational inertia detection apparatus according to claim 3, wherein a maximum opening width of the hollowed-out opening (100) is smaller than an outer diameter of the lower turntable (3).
5. A composite propeller moment of inertia detection apparatus as claimed in claim 3, wherein the support base plate (10) is Y-shaped.
6. Composite propeller moment of inertia detection device according to claim 2, wherein the bottom of the support base plate (10) is provided with a support plate (6).
7. A composite propeller moment of inertia detection apparatus as claimed in claim 6, wherein the outer diameter of the support disc (6) is gradually larger from top to bottom.
8. The composite material propeller moment of inertia detection apparatus of claim 1, wherein there are three and evenly distributed connection lines (5) between the upper turntable (2) and the lower turntable (3).
9. A composite propeller moment of inertia detection apparatus as claimed in claim 1, wherein the connection line (5) is a stiff line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435444.3U CN214748628U (en) | 2021-02-26 | 2021-02-26 | Composite material propeller rotational inertia detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435444.3U CN214748628U (en) | 2021-02-26 | 2021-02-26 | Composite material propeller rotational inertia detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214748628U true CN214748628U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120435444.3U Active CN214748628U (en) | 2021-02-26 | 2021-02-26 | Composite material propeller rotational inertia detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214748628U (en) |
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2021
- 2021-02-26 CN CN202120435444.3U patent/CN214748628U/en active Active
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