CN102818693A - Half-module pivoted window mechanism applied to sub transonic speed wind tunnel - Google Patents
Half-module pivoted window mechanism applied to sub transonic speed wind tunnel Download PDFInfo
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- CN102818693A CN102818693A CN2012102935550A CN201210293555A CN102818693A CN 102818693 A CN102818693 A CN 102818693A CN 2012102935550 A CN2012102935550 A CN 2012102935550A CN 201210293555 A CN201210293555 A CN 201210293555A CN 102818693 A CN102818693 A CN 102818693A
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Abstract
The invention relates to a half-module pivoted window mechanism applied to a sub transonic speed wind tunnel. The half-module pivoted window mechanism comprises a driving transmission module, a feedback and measurement module and a rotating module, wherein the driving transmission module consists of a support seat, a large cylindrical straight gear, an alternating current servo motor, a speed reducer, a gear press cover, a small cylindrical straight gear, a compression cover and a compression screw, the feedback and measurement module consists of a potentiometer support seat, a potentiometer, a press sheet, a shaft coupler, a small shaft and a connecting cover, and the rotating module consists of a right bearing cover, a bearing seat, a pair of precise conical roller bearings, a left bearing cover and a main shaft. Through the adoption of a cylindrical straight gear group, the half-module pivoted window mechanism can realize the movement for positive 360 degrees and negative 360 degrees, in addition, the integral hosting of the mechanism can be realized, a measurement part adopting the potentiometer as the core is adopted for the transmission matching of the cylindrical straight gear group, and the attack angle control precision being +/-3' can be realized.
Description
Technical field
The present invention relates to a kind of half module that is applied to inferior transonic wind tunnel changes window mechanism, belongs to the experimental aerodynamics field.
Background technology
The half module experimental technique is a kind of important wind-tunnel technique, can solve preferably at test section to carry out full model when test, the restriction of the section of being put to the test sectional dimension, institute cause testing the Re number lower, be difficult to realize problem such as aircraft profile details simulation.Domestic and international most of wind-tunnel is employed in usually on the conventional test section and the half module pilot system to be installed to carry out the half module test; The wind-tunnel of some larger caliber magnitude, for example CARDC2.4 rice wind-tunnel, FL-2 wind-tunnel etc. then adopt the half module test section of processing separately, will bigger half model be installed in to carry out aerodynamic test in this test section.Changeing window mechanism is the core institution of half module pilot system (or half module test section), and half model is installed in to be changeed in the window mechanism, and dynamometry, pressure measurement, the fluidised form that can carry out half model observed, change Re counts test, hinge moment testing, buffeting test etc.
In fact half module changes window mechanism is exactly half module angle of attack mechanism.Usually, the half module of inferior transonic wind tunnel commentaries on classics window mechanism is arranged on the sidewall of the test section left and right sides.At present, the half module of most inferior transonic wind tunnels commentaries on classics window mechanism driving chain is generally: motor (or oil motor)-shaft coupling-speed reduction unit-worm couple-commentaries on classics window.Because the worm couple transmission efficiency and the rotating accuracy of big centre distance are lower, can realize worm couple processing difficulties, the cost height of big centre distance, high rotating accuracy and high transmission efficiency, be difficult to realize circular motion; Existing mechanism adopts the kind of drive and the installation environment of worm couple to cause can not integral hoisting, installs, dismounting inconvenience, wastes time and energy, and setup time is long, and test efficiency is low.
Summary of the invention
The object of the invention: the deficiency that overcomes prior art; Provide a kind of half module that is applied to inferior transonic wind tunnel to change window mechanism; To solve worm couple processing difficulties, the cost height that existing mechanism adopts big centre distance; Be difficult to realize the circumference rotation and can not realize integral hoisting, install, dismantle inconvenience, the problem that test efficiency is low.
Technical solution of the present invention:
A kind of half module that is applied to inferior transonic wind tunnel changes window mechanism, comprising: bearing, big column spur gear, AC servo motor, speed reduction unit, pot bearing, pot, compressing tablet, shaft coupling, little axle, connection cover, gear gland, small column spur gear, key, right bearing lid, bearing seat, taper roll bearing, left bearing lid, main shaft, friction top and housing screw;
The a pair of taper roll bearing of between main shaft and bearing seat, packing into; Make main shaft, bearing seat and taper roll bearing closely be connected; Left bearing lid and right bearing lid are installed in the left side and the right side of taper roll bearing respectively, and left bearing covers and right bearing covers the taper roll bearing axial compression;
The small column spur gear links to each other with main shaft through pair of keys, the gear gland is installed on the main shaft, and at axial compression small column spur gear,
Be installed on the bearing after AC servo motor and speed reduction unit are direct-connected, use housing screw and friction top that the big column spur gear is installed on the axle that stretches out of speed reduction unit, again bearing is connected on the bearing seat,
Be installed on the gear gland after little axle and connection cover be connected; Again pot is installed on the pot bearing through compressing tablet; Again the pot bearing is installed on the bearing; Make the dead in line of potentiometric axis and little axle, potentiometric axle links together through shaft coupling with little axle, and said pot is used to measure the rotational angle of main shaft.
Said big column spur gear and the engagement of small column spur gear form the cylindrical straight gear wheels and carry out transmission, make said half module change window mechanism and can realize ± 360 ° of motions.
The parallel axes of said AC servo motor and axis after speed reduction unit is direct-connected and main shaft but do not overlap.
Said main shaft is a quill shaft.
The a pair of taper roll bearing of packing between said main shaft and the bearing seat adopts face-to-face mode to install.
Said pair of keys is 180 degree up and down around main shaft and is symmetrically distributed.
The present invention has following beneficial effect:
(1) the present invention adopts high precision cylinder spur gear group (big column spur gear (2) and small column spur gear (12)) transmission; Worm couple than processing difficulties, the big centre distance that cost is high, high rotating accuracy and transmission efficiency; Process-cycle is short, and cost performance is high, can realize high rotating accuracy, high transmission efficiency and circular motion; Mechanism can realize ± 360 ° of motions, can satisfy multiple test demand.
(2) half module of the present invention changes window mechanism center of gravity basically at the root (near the right bearing lid) of bearing seat 15; But integral hoisting conveniently is quick installed at the windowsill of original test section view window, installs, convenient disassembly; Effectively reduce test setup time, improved test efficiency.
(3) the present invention uses pot directly to measure the rotational angle of main shaft; And main shaft is directly to be connected with load, does not have middle transmission link, has save middle driving error; Therefore the direct actual rotation angle of sensing lead of feedback and measurement module; And upload this angle value, carry out the respective feedback control action by computing machine according to program, improve the accuracy that the angle of attack is measured.The transmission of high precision cylinder spur gear group cooperate to adopt high-accuracy current potential to count the feedback and the measurement module of core, can realize angle of attack control accuracy can reach ± 3 '.
(4) the present invention will drive with AC servo motor, speed reduction unit biasing; Parallel with the rotating module center line rather than overlap; Drive the straight-tooth wheels and drive main axis rotation, main shaft adopts the quill shaft design, makes things convenient for the wiring of a large amount of cables such as balance data line, pressure measurement pipeline, sensor signal lines, pipeline; Increase the wiring reliability, can satisfy multiple test demand.
(5) the present invention has designed the standard round taper roller bearing of a pair of high precision, big load on main shaft support, adopts face-to-face mode to install, and makes things convenient for installation and removal, and cost performance is good, can bear the power and the moment that act in the mechanism.
Description of drawings:
Fig. 1 changes window mechanism structure synoptic diagram for the half module of the inferior transonic wind tunnel of the present invention;
Fig. 2 changes window mechanism scheme of installation for half module of the present invention;
Embodiment:
Below in conjunction with accompanying drawing embodiment of the present invention is described.
The invention provides a kind of half module that is applied to inferior transonic wind tunnel and change window mechanism; As shown in Figure 1, comprising: bearing 1, big column spur gear 2, AC servo motor 3, speed reduction unit 4, pot bearing 5, pot 6, compressing tablet 7, shaft coupling 8, little axle 9, connection cover 10, gear gland 11, small column spur gear 12, key 13, right bearing lid 14, bearing seat 15, taper roll bearing 16, left bearing lid 17, main shaft 18, friction top 19 and housing screw 20;
The present invention can be divided into three modules: drive transmission module, feedback and measurement module and rotating module.Wherein, bearing 1, big column spur gear 2, AC servo motor 3, speed reduction unit 4, gear gland 11, small column spur gear 12, friction top 19 and housing screw 20 are formed the driving transmission module; Pot bearing 5, high-accuracy pot 6, compressing tablet 7, shaft coupling 8, little axle 9 and connection cover 10 are formed feedback and measurement module; Right bearing lid 14, bearing seat 15, a pair of taper roll bearing 16, left bearing lid 17 and main shaft 18 are formed rotating module.
The a pair of taper roll bearing 16 of between main shaft 18 and bearing seat 15, packing into; Make main shaft 18, bearing seat 15 and taper roll bearing 16 closely be connected; Left bearing lid 17 and right bearing lid 14 are installed in the left side and the right side of taper roll bearing 16 respectively, and left bearing lid 17 and right bearing lid 14 are with taper roll bearing 16 axial compression;
Small column spur gear 12 links to each other with main shaft 18 through pair of keys 13, and gear gland 11 is installed on the main shaft 18, and at axial compression small column spur gear 12, pair of keys 13 is 180 degree up and down around main shaft 18 and is symmetrically distributed.
Be installed on the gear gland 11 after little axle 9 and connection cover 10 be connected; Again pot 6 is installed on the pot bearing 5 through compressing tablet 7; Again pot bearing 5 is installed on the bearing 1; Make the dead in line of axis and little axle 9 of pot 6, the axle of pot 6 and little axle 9 link together through shaft coupling 8, and said pot 6 is used to measure the rotational angle of main shaft 27.
Feedback and measurement module that the present invention adopts AC servo motor 3, precision speed reduction device 4, cylindrical straight gear wheels driving transmission modules such as (big column spur gears 2 and small column spur gear 12) and pot bearing 5, pot 6, little axle 9 etc. to form are external, and the residual rotation module section need project forwardly in the test section and with original test section view window windowsill and be connected.
Half module changes the center of gravity of window mechanism basically at the root of bearing seat 15, promptly covers 14 places near right bearing, directly lifting after can using lifting rope or suspension hook being installed.See also Fig. 2; Two- layer hole wall 23,24 inside and outside inferior transonic wind tunnel test section has after the lifting, changes window mechanism through screw 21 with half module; Be installed on the inferior transonic wind tunnel test section outside window sill 22; Through regulating, make the front end face of main shaft 18 flush with the wall of hole wall 24 in the inferior transonic wind tunnel test section, accomplish and install.
During dismounting, the screw 33 that is installed on the inferior transonic wind tunnel test section is disassembled, use crane that mechanism is winched to ground then.
The present invention uses pot 6 directly to measure the rotational angle of main shaft 18; And main shaft 18 is directly to be connected with load, does not have middle transmission link, has save middle driving error; Therefore the direct actual rotation angle of sensing lead of feedback and measurement module; And upload this angle value, carry out the respective feedback control action by computing machine according to program, improve the accuracy that the angle of attack is measured.
The present invention adopts cylindrical straight gear wheels (big column spur gear 2 and small column spur gear 12) to carry out transmission; Through mending teeth of gear and Precision Machining; Can realize high rotating accuracy, high transmission efficiency and circular motion, make half module change window mechanism and can realize ± 360 ° of motions, can satisfy multiple test demand; Feedback and measurement module that cooperate to adopt high-accuracy pot 6 be core, can realize angle of attack control accuracy can reach ± 3 '.The big centre distance that processing difficulties, the cost that adopts than present tradition is high, the worm couple of high rotating accuracy, the process-cycle is short, and cost performance is high.
In addition; AC servo motor 3 after direct-connected and precision speed reduction device 4 biasings, rather than coincidence parallel with the center line (axis) of rotating module (main shaft 18) drives the straight-tooth wheels and drives main shaft 18 rotations; Main shaft adopts the quill shaft design; Make things convenient for the wiring of a large amount of cables such as balance data line, pressure measurement pipeline, sensor signal lines, pipeline, increased the wiring reliability, can satisfy multiple test demand.
Aerodynamic loading complicacy and value that half module commentaries on classics window mechanism bears are bigger; Especially born bigger rolling moment,, supported the standard round taper roller bearing that has designed a pair of high precision, big load at main shaft 18 for the aerodynamic loading that will act in the mechanism is delivered on the sidewall paneling; Adopt face-to-face mode to install; Make things convenient for installation and removal, cost performance is good, can bear the power and the moment that act in the mechanism.
Through calibration model test and actual items experimental test; This inventive embodiments can satisfy multiple test demands such as half model dynamometry, pressure measurement; Can realize ± 360 ° of motions, angle of attack control accuracy can reach ± 3 ', install, the take-down time is about half an hour; Significantly reduce compared with in the past three hours test setup times, improved test efficiency.
The content of not doing to describe in detail in the instructions of the present invention belongs to the known technology of this area.
Claims (6)
1. a half module that is applied to inferior transonic wind tunnel changes window mechanism, it is characterized in that comprising: bearing (1), big column spur gear (2), AC servo motor (3), speed reduction unit (4), pot bearing (5), pot (6), compressing tablet (7), shaft coupling (8), little axle (9), connection cover (10), gear gland (11), small column spur gear (12), key (13), right bearing lid (14), bearing seat (15), taper roll bearing (16), left bearing lid (17), main shaft (18), friction top (19) and housing screw (20);
The a pair of taper roll bearing (16) of between main shaft (18) and bearing seat (15), packing into; Make main shaft (18), bearing seat (15) and taper roll bearing (16) closely be connected; Left bearing lid (17) and right bearing lid (14) are installed in the left side and the right side of taper roll bearing (16) respectively, and left bearing covers (17) and right bearing covers (14) with taper roll bearing (16) axial compression;
Small column spur gear (12) links to each other with main shaft (18) through pair of keys (13), gear gland (11) is installed on the main shaft (18), and at axial compression small column spur gear (12),
AC servo motor (3) is installed on the bearing (1) with speed reduction unit (4) is direct-connected afterwards, uses housing screw (20) and friction top (19) that big column spur gear (2) is installed on the axle that stretches out of speed reduction unit, again bearing (1) is connected on the bearing seat (15),
Be installed on the gear gland (11) after little axle (9) and connection cover (10) be connected; Again pot (6) is installed on the pot bearing (5) through compressing tablet (7); Again pot bearing (5) is installed on the bearing (1); Make the dead in line of axis and little axle (9) of pot (6), the axle of pot (6) links together through shaft coupling (8) with little axle (9), and said pot (6) is used to measure the rotational angle of main shaft (27).
2. change window mechanism according to the said a kind of half module that is applied to inferior transonic wind tunnel of claim 1; It is characterized in that: said big column spur gear (2) and small column spur gear (12) engagement form the cylindrical straight gear wheels and carry out transmission, make said half module change window mechanism and can realize ± 360 ° of motions.
3. change window mechanism according to the said a kind of half module that is applied to supersonic wind tunnel of claim 1, it is characterized in that: the parallel axes of said AC servo motor (3) and axis after speed reduction unit (4) is direct-connected and main shaft (18) but do not overlap.
4. change window mechanism according to the said a kind of half module that is applied to supersonic wind tunnel of claim 1, it is characterized in that: said main shaft (18) is a quill shaft.
5. change window mechanism according to the said a kind of half module that is applied to supersonic wind tunnel of claim 1, it is characterized in that: a pair of taper roll bearing (16) of packing between said main shaft (18) and the bearing seat (15) adopts face-to-face mode to install.
6. change window mechanism according to the said a kind of half module that is applied to supersonic wind tunnel of claim 1, it is characterized in that: said pair of keys (13) is 180 degree up and down around main shaft (18) and is symmetrically distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210293555.0A CN102818693B (en) | 2012-08-17 | 2012-08-17 | Half-module pivoted window mechanism applied to sub transonic speed wind tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210293555.0A CN102818693B (en) | 2012-08-17 | 2012-08-17 | Half-module pivoted window mechanism applied to sub transonic speed wind tunnel |
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| CN102818693A true CN102818693A (en) | 2012-12-12 |
| CN102818693B CN102818693B (en) | 2014-12-24 |
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| CN201210293555.0A Expired - Fee Related CN102818693B (en) | 2012-08-17 | 2012-08-17 | Half-module pivoted window mechanism applied to sub transonic speed wind tunnel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104359643A (en) * | 2014-10-29 | 2015-02-18 | 中国航空工业集团公司哈尔滨空气动力研究所 | Pitching-rolling two-degree-of-freedom experimental platform based on electromechanical hydraulic coupling drive |
| CN107621349A (en) * | 2017-08-29 | 2018-01-23 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of wind-tunnel half model varied angle mechanism |
| CN108051177A (en) * | 2017-12-28 | 2018-05-18 | 西北工业大学 | A kind of cascade wind tunnel based on link mechanism turns window supporting device |
| CN108303227A (en) * | 2018-02-14 | 2018-07-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Aeroelastic effect wind tunnel test half model system and test method |
| CN112683484A (en) * | 2021-01-21 | 2021-04-20 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Half-mode supporting mechanism applied to large continuous transonic wind tunnel |
| CN113514222A (en) * | 2021-06-07 | 2021-10-19 | 中国航天空气动力技术研究院 | Aerodynamic force measurement device and method for air breathing model of air breathing type air inlet aircraft |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359643A (en) * | 2014-10-29 | 2015-02-18 | 中国航空工业集团公司哈尔滨空气动力研究所 | Pitching-rolling two-degree-of-freedom experimental platform based on electromechanical hydraulic coupling drive |
| CN104359643B (en) * | 2014-10-29 | 2018-06-22 | 中国航空工业集团公司哈尔滨空气动力研究所 | Pitching based on electromechanical hydraulic pressure coupling driving-rolling two-freedom experiment porch |
| CN107621349A (en) * | 2017-08-29 | 2018-01-23 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of wind-tunnel half model varied angle mechanism |
| CN107621349B (en) * | 2017-08-29 | 2024-04-12 | 中国航空工业集团公司沈阳空气动力研究所 | Wind tunnel half-mode angle-changing mechanism |
| CN108051177A (en) * | 2017-12-28 | 2018-05-18 | 西北工业大学 | A kind of cascade wind tunnel based on link mechanism turns window supporting device |
| CN108051177B (en) * | 2017-12-28 | 2019-06-21 | 西北工业大学 | A kind of cascade wind tunnel based on link mechanism turns window supporting device |
| CN108303227A (en) * | 2018-02-14 | 2018-07-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Aeroelastic effect wind tunnel test half model system and test method |
| CN108303227B (en) * | 2018-02-14 | 2024-04-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Static aeroelastic wind tunnel test semi-model system and test method |
| CN112683484A (en) * | 2021-01-21 | 2021-04-20 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Half-mode supporting mechanism applied to large continuous transonic wind tunnel |
| CN112683484B (en) * | 2021-01-21 | 2022-09-23 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Half-mode supporting mechanism applied to large continuous transonic wind tunnel |
| CN113514222A (en) * | 2021-06-07 | 2021-10-19 | 中国航天空气动力技术研究院 | Aerodynamic force measurement device and method for air breathing model of air breathing type air inlet aircraft |
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