CN210154775U - Attitude control device for wind tunnel balance - Google Patents
Attitude control device for wind tunnel balance Download PDFInfo
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- CN210154775U CN210154775U CN201920665027.0U CN201920665027U CN210154775U CN 210154775 U CN210154775 U CN 210154775U CN 201920665027 U CN201920665027 U CN 201920665027U CN 210154775 U CN210154775 U CN 210154775U
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- wind tunnel
- tunnel balance
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- rolling
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- 238000005096 rolling process Methods 0.000 claims abstract description 55
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- 241000883990 Flabellum Species 0.000 claims 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 3
- 239000011888 foil Substances 0.000 abstract description 2
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 description 3
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- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
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Abstract
The utility model relates to a wind-tunnel balance calibration technical field specifically discloses a wind-tunnel balance attitude control device. A wind tunnel balance attitude control device comprises a base, a pitching mechanism and a rolling mechanism, wherein the rolling mechanism is integrally arranged in the middle of the pitching mechanism, and two ends of the pitching mechanism are arranged on the base through a rotating shaft, so that the pitching mechanism and the rolling mechanism synchronously move for a certain angle along the rotating shaft; the roll mechanism may be rotated at an angle in a direction perpendicular to the rotational axis of the pitch mechanism. The device adopts a double-fan-blade structure pitching mechanism and an integrated layout that a rolling mechanism is positioned in the pitching mechanism, so that the normal stiffness of the attitude control device of the wind tunnel balance is greatly enhanced, and the device can be applied to not only foil type strainometer wind tunnel balances, semiconductor strainometer wind tunnel balances but also piezoelectric wind tunnel balances; meanwhile, the gravity center of the pitching mechanism is always close to the driving end, and the pitching motion is guaranteed to be stable and uniform.
Description
Technical Field
The invention belongs to the technical field of wind tunnel balance calibration, and particularly relates to a wind tunnel balance attitude control device.
Background
The calibration of the wind tunnel balance is one of the main links of the wind tunnel balance application, and aims to obtain a relation matrix between input and output of the wind tunnel balance through the calibration of the wind tunnel balance. When the wind tunnel balance is actually used, the input of the wind tunnel balance, namely the effective aerodynamic load, can be obtained through back calculation according to the relationship matrix between the input and the output of the wind tunnel balance, which are obtained through calibration. The calibration process of the wind tunnel balance is a process for simulating the use state of the wind tunnel balance, and during calibration of the wind tunnel balance, the calibration equipment applies accurate design load to the wind tunnel balance, and the output of the wind tunnel balance is acquired through the data acquisition instrument, so that the calculation of the input and output relation matrix of the wind tunnel balance is carried out. The calibration equipment of the wind tunnel balance has various types and different types with advantages, wherein the single-vector multi-element calibration equipment is adopted by the department of China due to the characteristics of simple equipment structure and control, high reliability, low development cost and the like. The single-vector multi-element calibration equipment realizes the loading of the design load on the wind tunnel balance by changing the relative position of the wind tunnel balance and the weight load. The weight load is the gravity generated by the weight mass, the direction of the weight load is always kept vertical and unchanged, the single-vector multi-element calibration equipment realizes the decomposition of the weight load to the axial force, the normal force and the lateral force of the wind tunnel balance by changing the pitch angle and the roll angle of the wind tunnel balance, and simultaneously realizes the application of the pitch moment, the yaw moment and the roll moment of the wind tunnel balance by changing the relative distance between the action point of the weight load and the calibration center of the wind tunnel balance. The method for changing the attitude of the wind tunnel balance is a main function of single-vector multi-element calibration equipment, and the structural form of the method mainly comprises a multi-axis linkage type, a rotary table type and the like.
Disclosure of Invention
The invention aims to provide a wind tunnel balance attitude control device, which changes and controls the pitch angle and the roll angle of the wind tunnel balance under the condition of higher rigidity, so that the weight load is accurately decomposed in the directions of the axial force, the normal force and the lateral force of the wind tunnel balance, and the calibration of the wind tunnel balance is realized.
The technical scheme of the invention is as follows: a wind tunnel balance attitude control device comprises a base, a pitching mechanism and a rolling mechanism, wherein the rolling mechanism is integrally arranged in the middle of the pitching mechanism, two ends of the pitching mechanism are arranged on the base through a rotating shaft, and the pitching mechanism and the rolling mechanism synchronously move for a certain angle along the rotating shaft; the roll mechanism may be rotated at an angle in a direction perpendicular to the rotational axis of the pitch mechanism.
The pitching mechanism is of a double-fan-blade structure, and a rolling mechanism is arranged between the double fan blades to form an integral structure; the center ends of the double fan blades in the pitching mechanism are fixed on the two supporting arms on the upper end surface of the base through rotating bearings, so that the pitching mechanism and the rolling mechanism rotate along the central shafts of the double fan blades.
The arc end surfaces of the double fan blades are provided with high-precision arc racks which are matched and meshed with a driving gear arranged on the base; the driving gear is connected with the servo motor A through a coupler, and the double blades in the pitching mechanism are synchronously driven to synchronously move through the coupler and the driving gear.
The base on be equipped with every single move locking mechanism, every single move locking mechanism set up the both sides at every single move mechanism biparting leaf, every single move locking mechanism pass through hydraulic pressure and spring, realize pressing from both sides tightly the even of biparting leaf structure.
The rolling mechanism comprises a hollow worm and a servo motor B, wherein the hollow worm is arranged on a rolling mechanism shell between the double-fan-blade structure, and the servo motor B is used for driving the hollow worm to rotate; and an encoder is arranged in the servo motor B, so that the rotation angle of the hollow worm can be measured.
The rolling mechanism also comprises a rolling locking mechanism, the rolling locking mechanism is arranged on the base, is of an annular structure, is sleeved on the hollow worm, and realizes the brake and release of the hollow worm by utilizing hydraulic pressure and a spring; the axis of the rolling locking mechanism is superposed with the axis of the hollow worm.
The wind tunnel balance is arranged at the front end or the rear end of the hollow worm in the rolling mechanism and is mounted at the front end or the rear end of the hollow worm through a wind tunnel balance mounting seat, wherein the shorter wind tunnel balance can be arranged at the front end of the hollow worm, and the longer wind tunnel balance penetrates through the hollow worm and is mounted at the rear end of the hollow worm.
The double fan blades in the pitching mechanism and the rolling mechanism are connected by reinforcing ribs to enhance the connection rigidity of the whole pitching mechanism and the whole rolling mechanism.
The encoder inside the servo motor A can accurately measure and obtain the motion angle of the pitching mechanism.
The base is of a rigid frame structure and can ensure that deformation outside the allowable range of the calibration precision of the wind tunnel balance does not occur in the calibration process of the wind tunnel balance.
The invention has the following remarkable effects: the attitude control device of the wind tunnel balance has the following advantages: 1. the wind tunnel balance attitude control device has the advantages that the normal stiffness of the wind tunnel balance attitude control device is greatly enhanced through the integral layout of the double-fan-blade structure pitching mechanism and the rolling mechanism positioned in the pitching mechanism, so that the wind tunnel balance attitude control device can be applied to not only a foil type strainometer wind tunnel balance, a semiconductor strainometer wind tunnel balance, but also a piezoelectric wind tunnel balance; 2. through the driving design of the double-fan-blade structure pitching mechanism, the coupler and the arc rack and pinion pair, the gravity center of the pitching mechanism is always close to the driving end, and the stable and uniform pitching motion is ensured; 3. through the hollow design of the worm of the rolling mechanism and the modularized design of the wind tunnel balance mounting seat, the calibration requirements of wind tunnel balances of different lengths and different types are met.
Drawings
FIG. 1 is a schematic structural diagram of a wind tunnel balance attitude control device according to the present invention;
FIG. 2 is a rear view of a wind tunnel balance attitude control apparatus according to the present invention;
FIG. 3 is a schematic front view of a wind tunnel balance attitude control apparatus according to the present invention;
in the figure: 1. a base; 2. a pitch locking mechanism; 3. a pitch mechanism; 4. a rolling locking mechanism; 5. a rolling mechanism; 6. a mounting seat; 7. a drive gear; 8. an arc-shaped rack; 9. a coupling; 10. servo motors A and 11 and reinforcing ribs; 12. a hollow worm; 13. a wind tunnel balance; 14. loading a sleeve; 15. and a servo motor B.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 3, a wind tunnel balance attitude control device comprises a base 1, a pitching mechanism 3 and a rolling mechanism 5, wherein the base 1 is of a rigid frame structure and can ensure that deformation outside an allowable range of wind tunnel balance calibration precision does not occur in the wind tunnel balance calibration process; the pitching mechanism 3 is of a double-blade structure, the rolling mechanism 5 is fixedly arranged between the double blades to form an integral structure, and the double blades in the pitching mechanism 3 and the rolling mechanism 5 are connected by reinforcing ribs to enhance the integral connection rigidity of the pitching mechanism 3 and the rolling mechanism 5; the central ends of the double blades of the pitching mechanism 3 are fixed on two supporting arms on the upper end surface of the base 1 through bearings, so that the pitching mechanism 3 and the rolling mechanism 5 rotate along the central axes of the double blades; high-precision arc-shaped racks 8 are arranged on the arc end surfaces of the two fan blade structures of the pitching mechanism 3 and are meshed and matched with the two high-precision driving gears 7 arranged on the base 1, the two driving gears 7 are connected with a servo motor A10 through a coupler 9, and the two fan blade structures of the pitching mechanism 3 are driven to synchronously rotate through the coupler 9 and the driving gears 7; an encoder inside the servo motor A10 can accurately measure and obtain the movement angle of the pitching mechanism; the pitching locking mechanisms 2 are arranged on the upper end surfaces of the bases 1 positioned on the two sides of the double blades of the pitching mechanism 3, and the pitching locking mechanisms are uniformly clamped by hydraulic pressure and a spring, so that the pitching mechanism 3 is locked; the rolling mechanism 5 comprises a hollow worm 12, a rolling locking mechanism 4 and a servo motor B15, wherein the hollow worm 12 penetrates through a through hole of a shell of the rolling mechanism 5 and is vertically arranged between the pitching mechanisms 3, the axis of the hollow worm 12 is vertical to the axis between two blades in the pitching mechanisms 3, the hollow worm 12 is driven to rotate by the servo motor B15 arranged between the two blades, and the motion angle of the hollow worm 12 in the rolling mechanism 5 is obtained by measuring by an encoder in the servo motor B15; the rear end of a hollow worm 12 positioned at the end part of the cambered surface of the double fan blades of the pitching mechanism 3 is sleeved with a rolling locking mechanism 4, wherein the rolling locking mechanism 4 is arranged on the base 1 and is of an annular structure with the axis coinciding with the axis of the hollow worm 12, and the uniform band-type brake taking the axis of the hollow worm 12 as the reference is realized through hydraulic pressure and a spring in the annular structure, so that the locking of the rolling mechanism 5 is realized; the wind tunnel balance 13 is arranged at the front end or the rear end of the hollow worm 12 through the wind tunnel balance mounting seat 6, wherein the shorter wind tunnel balance 13 can be arranged at the front end of the hollow worm 12, and the longer wind tunnel balance 13 is arranged at the rear end of the hollow worm 12 after penetrating through the hollow worm 12;
the wind tunnel balance attitude control device provided by the invention has the specific use process that: the wind-tunnel balance 13 is arranged at the front end of the hollow worm 12 of the rolling mechanism 5 through the wind-tunnel balance mounting seat 6, and a loading sleeve 14 for applying weight load is arranged on the wind-tunnel balance. Assuming that the weight of the loading weight is 10kg, the pitching mechanism driving servo motor 10 drives the pitching mechanism 3 to move by 30 degrees through the coupler 9, the pitching locking mechanism 2 locks the pitching mechanism, the rolling mechanism driving servo motor 15 drives the rolling mechanism 5 to move by 30 degrees, and the rolling locking mechanism 4 locks the rolling mechanism. The weight load is resolved on the wind tunnel balance 13 according to the angular relationship, wherein an axial force of 50N, a normal force of 75N and a lateral force of 43.3N are exerted on the wind tunnel balance 13.
Claims (10)
1. A wind-tunnel balance attitude control device is characterized in that: the device comprises a base (1), a pitching mechanism (3) and a rolling mechanism (5), wherein the rolling mechanism (5) is integrally arranged in the middle of the pitching mechanism (3), and two ends of the pitching mechanism (3) are arranged on the base (1) through a rotating shaft, so that the pitching mechanism (3) and the rolling mechanism synchronously move for a certain angle along the rotating shaft; the rolling mechanism (5) can rotate a certain angle in the direction perpendicular to the rotation axis of the pitching mechanism.
2. The attitude control device of a wind tunnel balance according to claim 1, wherein: the pitching mechanism (3) is of a double-blade structure, and a rolling mechanism (5) is arranged between the double blades to form an integral structure; the center ends of the double blades in the pitching mechanism (3) are fixed on two supporting arms on the upper end surface of the base (1) through rotating bearings, and the pitching mechanism (3) and the rolling mechanism (5) rotate along the center shafts of the double blades.
3. The attitude control device of a wind tunnel balance according to claim 2, wherein: the arc end surfaces of the double fan blades are provided with high-precision arc racks (8) which are matched and meshed with a driving gear (7) arranged on the base (1); the driving gear (7) is connected with the servo motor A (10) through the coupler (9), and the double-blade synchronous motion in the pitching mechanism (3) is synchronously driven through the coupler (9) and the driving gear (7).
4. The attitude control device of a wind tunnel balance according to claim 2, wherein: base (1) on be equipped with every single move locking mechanism (2), every single move locking mechanism (2) set up the both sides at every single move mechanism (3) two flabellums, every single move locking mechanism (2) through hydraulic pressure and spring, realize the even clamp tight to two flabellums structure.
5. The attitude control device of a wind tunnel balance according to claim 1, wherein: the rolling mechanism (5) comprises a hollow worm (12) and a servo motor B (15), wherein the hollow worm (12) is arranged on a shell of the rolling mechanism (5) between the double-fan-blade structure, and the servo motor B (15) is used for driving the hollow worm (12) to rotate; an encoder is arranged in the servo motor B (15), and the rotation angle of the hollow worm (12) can be measured and obtained.
6. The attitude control device of a wind tunnel balance according to claim 5, wherein: the rolling mechanism (5) further comprises a rolling locking mechanism (4), the rolling locking mechanism (4) is arranged on the base (1) and is of an annular structure, the rolling locking mechanism is sleeved on the hollow worm (12), and the contracting brake and the releasing of the hollow worm (12) are realized by utilizing hydraulic pressure and a spring; the axis of the rolling locking mechanism (4) is coincided with the axis of the hollow worm (12).
7. The attitude control device of a wind tunnel balance according to claim 5, wherein: the wind tunnel balance is characterized in that wind tunnel balances (13) can be arranged at the front end or the rear end of a hollow worm (12) in the rolling mechanism (5), the wind tunnel balances (13) are arranged at the front end or the rear end of the hollow worm (12) through wind tunnel balance mounting seats (6), wherein the shorter wind tunnel balance (13) can be arranged at the front end of the hollow worm (12), and the longer wind tunnel balance (13) penetrates through the hollow worm (12) and then is arranged at the rear end of the hollow worm (12).
8. The attitude control device of a wind tunnel balance according to claim 2, wherein: the double fan blades in the pitching mechanism (3) and the rolling mechanism (5) are connected by reinforcing ribs to enhance the connection rigidity of the whole pitching mechanism (3) and the rolling mechanism (5).
9. The attitude control device of a wind tunnel balance according to claim 3, wherein: an encoder inside the servo motor A (10) can accurately measure and obtain the motion angle of the pitching mechanism.
10. The attitude control device of a wind tunnel balance according to claim 1, wherein: the base (1) is of a rigid frame structure, and deformation outside the allowable range of the calibration precision of the wind tunnel balance can be avoided in the calibration process of the wind tunnel balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920665027.0U CN210154775U (en) | 2019-05-10 | 2019-05-10 | Attitude control device for wind tunnel balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920665027.0U CN210154775U (en) | 2019-05-10 | 2019-05-10 | Attitude control device for wind tunnel balance |
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| CN210154775U true CN210154775U (en) | 2020-03-17 |
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| CN201920665027.0U Expired - Fee Related CN210154775U (en) | 2019-05-10 | 2019-05-10 | Attitude control device for wind tunnel balance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108441A (en) * | 2019-05-10 | 2019-08-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of wind-tunnel balance dynamometer check preparation device |
| CN110108440A (en) * | 2019-05-10 | 2019-08-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of wind-tunnel balance attitude-control device |
| CN112504614A (en) * | 2020-10-19 | 2021-03-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Rolling reset device for wind tunnel balance calibration |
-
2019
- 2019-05-10 CN CN201920665027.0U patent/CN210154775U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108441A (en) * | 2019-05-10 | 2019-08-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of wind-tunnel balance dynamometer check preparation device |
| CN110108440A (en) * | 2019-05-10 | 2019-08-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of wind-tunnel balance attitude-control device |
| CN110108441B (en) * | 2019-05-10 | 2024-07-16 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel balance force test preparation device |
| CN112504614A (en) * | 2020-10-19 | 2021-03-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Rolling reset device for wind tunnel balance calibration |
| CN112504614B (en) * | 2020-10-19 | 2024-06-04 | 中国空气动力研究与发展中心高速空气动力研究所 | Rolling reset device for wind tunnel balance calibration |
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