CN102818693B - 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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- CN102818693B CN102818693B CN201210293555.0A CN201210293555A CN102818693B CN 102818693 B CN102818693 B CN 102818693B CN 201210293555 A CN201210293555 A CN 201210293555A CN 102818693 B CN102818693 B CN 102818693B
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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 Zhuan Chuan mechanism being applied to sub-transonic wind tunnel, belong to experimental aerodynamics field.
Background technology
Half-modcl test technology is a kind of important wind-tunnel technique, can solve when test section carries out full model test preferably, the restriction of the section of being put to the test sectional dimension, institute cause test Re number lower, be difficult to realize the problems such as aircraft profile details simulation.Domestic and international most of wind-tunnel, is typically employed in and conventional test section installs half-modcl test system carries out half-modcl test; The wind-tunnel of some larger caliber magnitude, such as CARDC2.4 rice wind-tunnel, FL-2 wind-tunnel etc., then adopt the half-model test section of processing separately, be arranged in this test section by larger half model and carry out aerodynamic test.Zhuan Chuan mechanism is the core institution of half-modcl test system (or half-model test section), is arranged on by half model in Zhuan Chuan mechanism, can carry out the dynamometry of half model, pressure measurement, fluidised form observation, become the test of Re number, hinge moment testing, buffeting test etc.
In fact half module Zhuan Chuan mechanism is exactly half module attack angle mechanism.Usually, the half module of sub-transonic wind tunnel turns window organization establishes on the sidewall of test section left and right.At present, the half module of most sub-transonic wind tunnel turns window mechanism driving chain and is generally: motor (or oil motor)-shaft coupling-speed reduction unit-worm couple-turn window.Due to the worm couple transmission efficiency of large centre distance and rotating accuracy lower, worm couple processing difficulties, the cost that can realize large centre distance, high rotating accuracy and high transmission efficiency are high, are difficult to realize circular motion; Existing mechanism adopts the kind of drive of worm couple and installation environment to cause can not integral hoisting, installs, dismounting inconvenience, and waste time and energy, setup time is long, and test efficiency is low.
Summary of the invention
Object of the present invention: overcome the deficiencies in the prior art, a kind of half module Zhuan Chuan mechanism being applied to sub-transonic wind tunnel is provided, adopt the worm couple processing difficulties of large centre distance, cost high to solve existing mechanism, be difficult to realize circular-rotation and can not integral hoisting be realized, install, dismantle inconvenience, the problem that test efficiency is low.
Technical solution of the present invention:
Be applied to a half module Zhuan Chuan mechanism for sub-transonic wind tunnel, comprise: 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;
A pair taper roll bearing is loaded between main shaft and bearing seat, make main shaft, bearing seat and taper roll bearing compact siro spinning technology, left bearing lid and right bearing lid are arranged on left side and the right side of taper roll bearing respectively, and left bearing lid and right bearing lid are by taper roll bearing axial compression;
Small column spur gear is connected with main shaft by pair of keys, is arranged on main shaft by gear gland, at axial compression small column spur gear,
AC servo motor and speed reduction unit direct-connected after be arranged on bearing, use housing screw and friction top to be arranged on the axle stretched out of speed reduction unit by big column spur gear, then bearing be connected on bearing seat,
Be arranged on after little axle and connection cover are connected on gear gland, again pot is arranged on pot bearing by compressing tablet, again pot bearing is arranged on bearing, make the dead in line of potentiometric axis and little axle, potentiometric axle and little axle are linked together by shaft coupling, and described pot is for measuring the rotational angle of main shaft.
Described big column spur gear and the engagement of small column spur gear form spur gear wheel group and carry out transmission, make described half module Zhuan Chuan mechanism can realize ± 360 ° of motions.
The axis being parallel of the axis after described AC servo motor is direct-connected with speed reduction unit and main shaft but do not overlap.
Described main shaft is quill shaft.
A pair taper roll bearing loaded between described main shaft and bearing seat adopts face-to-face mode to install.
Described pair of keys is symmetrical in 180 degree up and down around main shaft.
The present invention has following beneficial effect:
(1) the present invention adopts high precision spur gear wheel group (big column spur gear (2) and small column spur gear (12)) transmission, compared to the worm couple of processing difficulties, the large centre distance that cost is high, high rotating accuracy and transmission efficiency, process-cycle is short, cost performance is high, high rotating accuracy, high transmission efficiency and circular motion can be realized, mechanism can realize ± 360 ° of motions, can meet multiple test demand.
(2) half module Zhuan Chuan mechanism of the present invention center of gravity is substantially at the root (near right bearing lid) of bearing seat 15, can integral hoisting, fast and easy is arranged on the windowsill of original test section view window, installs, convenient disassembly, effectively reduce test setup time, improve test efficiency.
(3) the present invention uses pot directly to measure the rotational angle of main shaft, and main shaft is directly connected with load, there is no intermediate transmission link, eliminate intermediate transmission error, therefore feedback and measurement module can the actual rotation angles of direct sensing lead, and this angle value is uploaded, perform respective feedback control action by computing machine according to program, improve the accuracy of attack angle measurement.The transmission of high precision spur gear wheel group coordinates the feedback and the measurement module that adopt high-accuracy current potential to count core, angle of attack control accuracy can be realized can reach ± 3 '.
(4) driving AC servo motor, speed reduction unit are biased by the present invention, with rotating module centerline parallel instead of overlap, straight-tooth wheels are driven to drive main shaft to rotate, main shaft adopts quill shaft design, facilitate the wiring of a large amount of cable such as balance data line, pressure measurement pipeline, sensor signal lines, pipeline, add wiring reliability, multiple test demand can be met.
(5) the present invention devises the standard round taper roller bearing of a pair high precision, large load in main shaft support, and adopt face-to-face mode to install, facilitate installation and removal, cost performance is good, can bear the force and moment acted in mechanism.
Accompanying drawing illustrates:
Fig. 1 is that the half module of the sub-transonic wind tunnel of the present invention turns window mechanism structure schematic diagram;
Fig. 2 is half module Zhuan Chuan mechanism of the present invention scheme of installation;
Embodiment:
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
The invention provides a kind of half module Zhuan Chuan mechanism being applied to sub-transonic wind tunnel, 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 composition drives transmission module; Pot bearing 5, high-accuracy pot 6, compressing tablet 7, shaft coupling 8, little axle 9 and connection cover 10 composition feedback and measurement module; Right bearing lid 14, bearing seat 15, a pair taper roll bearing 16, left bearing lid 17 and main shaft 18 form rotating module.
A pair taper roll bearing 16 is loaded between main shaft 18 and bearing seat 15, make main shaft 18, bearing seat 15 and taper roll bearing 16 compact siro spinning technology, left bearing lid 17 and right bearing lid 14 are arranged on left side and the right side of taper roll bearing 16 respectively, and left bearing lid 17 and right bearing lid 14 are by taper roll bearing 16 axial compression;
Small column spur gear 12 is connected with main shaft 18 by pair of keys 13, installs on the spindle 18 by gear gland 11, and at axial compression small column spur gear 12, pair of keys 13 is symmetrical in 180 degree around main shaft about 18.
Be arranged on bearing 1 after AC servo motor 3 is direct-connected with speed reduction unit 4, housing screw 20 and friction top 19 is used to be arranged on the axle stretched out of speed reduction unit by big column spur gear 2, again bearing 1 is connected on bearing seat 15, described big column spur gear 2 and small column spur gear 12 engage formation spur gear wheel group and carry out transmission, make described half module Zhuan Chuan mechanism can realize ± 360 ° of motions.The axis being parallel of the axis after described AC servo motor 3 is direct-connected with speed reduction unit 4 and main shaft 18 but do not overlap.Described main shaft 18 is quill shaft.A pair taper roll bearing 16 loaded between described main shaft 18 and bearing seat 15 adopts face-to-face mode to install.
Be arranged on gear gland 11 after little axle 9 is connected with connection cover 10, again pot 6 is arranged on pot bearing 5 by compressing tablet 7, again pot bearing 5 is arranged on bearing 1, make the dead in line of the axis of pot 6 and little axle 9, axle and the little axle 9 of pot 6 are linked together by shaft coupling 8, and described pot 6 is for measuring the rotational angle of main shaft 27.
The present invention adopts AC servo motor 3, precision speed reduction device 4, cylindrical straight gear wheels (big column spur gear 2 and small column spur gear 12) etc. to drive the feedback of the composition such as transmission module and pot bearing 5, pot 6, little axle 9 external with measurement module, and it is interior and be connected with original test section view window windowsill that residual rotation module section need project forwardly to test section.
The center of gravity of half module Zhuan Chuan mechanism, substantially at the root of bearing seat 15, namely near right bearing lid 14 place, can use lifting rope or directly lift by crane after installing suspension hook.Refer to Fig. 2, sub-transonic wind tunnel test section has inside and outside two-layer hole wall 23,24, after lifting, by half module Zhuan Chuan mechanism by screw 21, be arranged on sub-transonic wind tunnel test section outside window sill 22, by regulating, the front end face of main shaft 18 being flushed with the wall of hole wall 24 in sub-transonic wind tunnel test section, completes installation.
During dismounting, the screw 33 be arranged in sub-transonic wind tunnel test section is disassembled, then use crane that mechanism is winched to ground.
The present invention uses pot 6 directly to measure the rotational angle of main shaft 18, and main shaft 18 is directly connected with load, there is no intermediate transmission link, eliminate intermediate transmission error, therefore feedback and measurement module can the actual rotation angles of direct sensing lead, and this angle value is uploaded, perform respective feedback control action by computing machine according to program, improve the accuracy of attack angle measurement.
The present invention adopts cylindrical straight gear wheels (big column spur gear 2 and small column spur gear 12) to carry out transmission, by mending teeth of gear and Precision Machining, high rotating accuracy, high transmission efficiency and circular motion can be realized, make half module Zhuan Chuan mechanism can realize ± 360 ° of motions, multiple test demand can be met, the high-accuracy pot 6 of cooperation employing is feedback and the measurement module of core, angle of attack control accuracy can be realized can reach ± 3 '.Compared to the worm couple of the processing difficulties of tradition employing at present, the large centre distance that cost is high, 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 are biased, parallel with the center line (axis) of rotating module (main shaft 18) instead of overlap, straight-tooth wheels are driven to drive main shaft 18 to rotate, main shaft adopts quill shaft design, facilitate the wiring of a large amount of cable such as balance data line, pressure measurement pipeline, sensor signal lines, pipeline, add wiring reliability, multiple test demand can be met.
The aerodynamic loading that bears of half module Zhuan Chuan mechanism is complicated and value is larger, especially larger rolling moment is born, in order to the aerodynamic loading acted in mechanism is delivered on sidewall paneling, the standard round taper roller bearing of a pair high precision, large load is devised on main shaft 18 supports, face-to-face mode is adopted to install, facilitate installation and removal, cost performance is good, can bear the force and moment acted in mechanism.
Through calibration model test and actual items experimental test, this inventive embodiments can meet the multiple test demands such as half model dynamometry, pressure measurement, ± 360 ° of motions can be realized, angle of attack control accuracy can reach ± and 3 ', install, about the take-down time is half an hour, greatly reduce compared with three h run setup times in the past, improve test efficiency.
The content be not described in detail in instructions of the present invention belongs to the known technology of this area.
Claims (6)
1. one kind is applied to the half module Zhuan Chuan mechanism of sub-transonic wind tunnel, 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),
A pair taper roll bearing (16) is loaded between main shaft (18) and bearing seat (15), make main shaft (18), bearing seat (15) and taper roll bearing (16) compact siro spinning technology, left bearing lid (17) and right bearing lid (14) are arranged on left side and the right side of taper roll bearing (16) respectively, and left bearing lid (17) and right bearing lid (14) are by taper roll bearing (16) axial compression;
Small column spur gear (12) is connected with main shaft (18) by pair of keys (13), is arranged on by gear gland (11) on main shaft (18), at axial compression small column spur gear (12),
Be arranged on bearing (1) after AC servo motor (3) is direct-connected with speed reduction unit (4), housing screw (20) and friction top (19) is used to be arranged on the axle stretched out of speed reduction unit by big column spur gear (2), again bearing (1) is connected on bearing seat (15)
Be arranged on gear gland (11) after little axle (9) and connection cover (10) are connected, again pot (6) is arranged on pot bearing (5) by compressing tablet (7), again pot bearing (5) is arranged on bearing (1), make the axis of pot (6) and the dead in line of little axle (9), axle and the little axle (9) of pot (6) are linked together by shaft coupling (8), and described pot (6) is for measuring the rotational angle of main shaft (18).
2. a kind of half module Zhuan Chuan mechanism being applied to sub-transonic wind tunnel according to claim 1, it is characterized in that: described big column spur gear (2) and small column spur gear (12) engagement form spur gear wheel group and carry out transmission, make described half module Zhuan Chuan mechanism can realize ± 360 ° of motions.
3. a kind of half module Zhuan Chuan mechanism being applied to sub-transonic wind tunnel according to claim 1, is characterized in that: the axis being parallel of the axis after described AC servo motor (3) is direct-connected with speed reduction unit (4) and main shaft (18) but do not overlap.
4. a kind of half module Zhuan Chuan mechanism being applied to sub-transonic wind tunnel according to claim 1, is characterized in that: described main shaft (18) is quill shaft.
5. a kind of half module Zhuan Chuan mechanism being applied to sub-transonic wind tunnel according to claim 1, is characterized in that: a pair taper roll bearing (16) loaded between described main shaft (18) and bearing seat (15) adopts face-to-face mode to install.
6. a kind of half module Zhuan Chuan mechanism being applied to sub-transonic wind tunnel according to claim 1, is characterized in that: described pair of keys (13) is symmetrical in 180 degree up and down around main shaft (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN102818693A CN102818693A (en) | 2012-12-12 |
| CN102818693B true 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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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN113514222B (en) * | 2021-06-07 | 2024-06-11 | 中国航天空气动力技术研究院 | Aerodynamic force measuring device and method for ventilation model of air suction type air inlet channel aircraft |
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