CN113267315B - Low-speed wind tunnel direct-drive gust generating device - Google Patents
Low-speed wind tunnel direct-drive gust generating device Download PDFInfo
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- CN113267315B CN113267315B CN202110505102.9A CN202110505102A CN113267315B CN 113267315 B CN113267315 B CN 113267315B CN 202110505102 A CN202110505102 A CN 202110505102A CN 113267315 B CN113267315 B CN 113267315B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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Abstract
The invention discloses a low-speed wind tunnel direct-drive gust generating device which comprises a rack, a plurality of groups of blade driving devices, a plurality of groups of blade assemblies and a plurality of groups of sliding end supporting pairs, wherein the plurality of groups of blade driving devices are fixedly arranged on the rack on one side in parallel at certain intervals, the other end of the rack is fixedly arranged with the plurality of groups of sliding end supporting pairs in parallel at the same corresponding intervals, one end of each group of blade assemblies is connected with the corresponding blade driving device, the other end of each group of blade assemblies is rotatably connected with the other side of the rack through the sliding end supporting pairs, and the plurality of groups of blade assemblies are parallel to each other. The device can realize high-frequency and large-angle gust simulation, and can form an effective gust test in a low-speed wind tunnel test; the coaxial-type quick-resetting tool has the advantages of easiness in adjustment of coaxiality, high dismounting efficiency and high resetting precision.
Description
Technical Field
The invention relates to a low-speed wind tunnel direct-drive gust generating device.
Background
With the development of the times and the progress of science and technology, the requirement of reducing the wind tunnel test aiming at gust load and gust load of a large civil airliner is more and more important. Through a wind tunnel test, gusts with specified shapes are generated through a gust generator based on a similar criterion, and a dynamic similar elastic scaling model is adopted, so that on one hand, gust loads can be predicted, gust load reduction technology is verified, and reliable data is provided for airplane strength design and flight control law design; on the other hand, the wind tunnel test can be used for verifying the gust response and gust load alleviation numerical simulation technology, so that the prediction accuracy is improved. Meanwhile, the gust wind tunnel test result also provides guarantee for the safety of the gust flight test. Therefore, a low-speed wind tunnel direct-drive gust generation device is needed for carrying out a gust alleviation test.
Disclosure of Invention
Based on the defects, the invention aims to provide the low-speed wind tunnel direct-drive type gust generation device which is used for carrying out a gust alleviation test and can carry out high-frequency and large-angle wind tunnel gust field simulation.
The technical solution adopted by the invention is as follows: the utility model provides a low-speed wind tunnel gust generating device, includes frame, multiunit blade drive arrangement, multiunit blade subassembly, multiunit sliding end support pair, multiunit blade drive arrangement according to certain interval parallel fixed mounting each other in one side frame, the other one end of frame is parallel fixed mounting each other with same corresponding interval has multiunit sliding end to support pair, every group the blade subassembly one end be connected rather than corresponding blade drive arrangement, the other one end of blade subassembly and the other one side of frame support pair rotation through the sliding end and be connected, multiunit blade subassembly is parallel to each other.
The invention also has the following technical characteristics:
1. the blade driving device comprises a hydraulic swing cylinder, a hydraulic swing cylinder mounting base, a tensioning coupling, a driving end bearing assembly and a driving end rotating shaft; the sliding end support pair comprises a sliding end rotating shaft, a sliding end bearing assembly and a sliding end mounting base; one side of frame according to certain interval parallel fixed mounting each other have multiunit hydraulic swing jar mounting base, the other one end of frame is parallel fixed mounting each other with same corresponding interval has multiunit slip end mounting base, every group hydraulic swing jar is installed on a set of hydraulic swing jar mounting base, every group hydraulic swing jar is connected with a drive end pivot through a set of tight coupling that rises, the one end of drive end pivot is located the drive end bearing subassembly, when every group hydraulic swing jar is reciprocal to be swung, carry out the moment of torsion monitoring through the torque sensor who installs on it, the other one end of every drive end pivot is connected with the one end of a set of blade subassembly, the other one end of this set of blade subassembly is connected with a set of slip end pivot, this set of slip end pivot passes through the slip end bearing subassembly and installs on the slip end mounting base.
2. The device further comprises a pull rod assembly and a plurality of groups of rolling bearings, the pull rod assembly and the blade assemblies are perpendicular to each other, the upper end and the lower end of the pull rod assembly are fixedly connected with the upper beam and the lower beam of the rack respectively, each group of blade assemblies comprises 2 blade units, one side end part of each blade unit is fixedly connected into an integral structure through a rotating shaft, the rotating shaft is installed on the inner ring of each rolling bearing, and the pull rod assembly is fixedly connected with the bearing seats of the plurality of groups of rolling bearings respectively.
3. The rolling bearing is further provided with a position adjusting assembly, the pull rod assembly comprises a multi-section pull rod, and the pull rod is connected with the position adjusting assembly and used for adjusting the coaxiality of the blade assembly.
4. The device also comprises a vertical fairing and a horizontal fairing, wherein the horizontal fairing and the vertical fairing are respectively arranged on the inner wall of the rack in the transverse direction and the longitudinal direction.
The invention has the advantages that: the device can realize high-frequency and large-angle gust simulation, and can form an effective gust test in a low-speed wind tunnel test; the coaxial-type quick-resetting tool has the advantages of easiness in adjustment of coaxiality, high dismounting efficiency and high resetting precision. This device can realize the frequency: 0-15 Hz and wide angle: and the reciprocating swing of 0-15 degrees is adjusted.
Drawings
FIG. 1 is a main view of a low-speed wind tunnel gust generating device;
FIG. 2 is a top view of a low-speed wind tunnel gust generating device;
FIG. 3 is a side view of a low speed wind tunnel gust generating device.
Fig. 4 is an enlarged view at I in fig. 3.
Detailed Description
The technical scheme of the invention is further explained by taking the following specific implementation examples in combination with the drawings of the specification.
Example 1
As shown in fig. 1-4, a low-speed wind tunnel gust generating device is installed in the front of a wind tunnel test section and comprises a rack, a plurality of groups of blade driving devices, a plurality of groups of blade assemblies 7, a plurality of groups of sliding end supporting pairs and a plurality of groups of blade driving devices, wherein the blade driving devices are mutually parallel and fixedly installed on the rack on one side according to a certain interval, the other ends of the rack are mutually parallel and fixedly installed with a plurality of groups of sliding end supporting pairs at the same corresponding interval, one end of each group of the blade assemblies is connected with the corresponding blade driving devices, the other ends of the blade assemblies are rotatably connected with the other side of the rack through the sliding end supporting pairs, and the groups of the blade assemblies are mutually parallel. The blade driving device comprises a hydraulic swing cylinder 1, a hydraulic swing cylinder mounting base 2, a tensioning coupling 4, a driving end bearing assembly 5 and a driving end rotating shaft 6; the sliding end support pair comprises a sliding end rotating shaft 9, a sliding end bearing assembly and a sliding end mounting base 11; one side of frame parallel fixed mounting each other according to certain interval have multiunit hydraulic swing jar mounting base 2, the other end of frame parallel fixed mounting each other has multiunit slip end mounting base 11 with same corresponding interval, every group hydraulic swing jar 1 is installed on a set of hydraulic swing jar mounting base 2, every group hydraulic swing jar 1 is connected with a drive end pivot 6 through a set of tight shaft coupling 4 that rises, the one end of drive end pivot 6 is located drive end bearing assembly 5, when every group hydraulic swing jar 1 reciprocates, carry out the torque monitoring through the torque sensor 3 that installs on it, every drive end pivot 6 other end is connected with the one end of a set of blade subassembly 7, the other end and a set of slip end pivot 9 of this group of blade subassembly 7 are connected, this group of slip end pivot 9 is installed on slip end mounting base 11 through slip end bearing assembly 10.
The blade assembly 7 is coaxially adjusted through the pull rod assembly 8, the whole blade during swinging is improved, each blade assembly comprises 2 blade units, one side end portion of each blade unit is fixedly connected into an integral structure through a rotating shaft 18, the rotating shaft 18 is installed on an inner ring of the rolling bearing 13, and the pull rod assembly is fixedly connected with bearing seats of the plurality of groups of rolling bearings respectively. The rolling bearing is further provided with a position adjusting assembly, the pull rod assembly comprises a multi-section pull rod, the lower end of the first pull rod 15 is in threaded connection with the position adjusting assembly through a nut 16, the upper end of the second pull rod 17 is in threaded connection with the position adjusting assembly through a nut 16, and the multi-section pull rods are sequentially connected and used for adjusting the coaxiality of the blade assembly.
The hydraulic swing cylinder 1 realizes gust field simulation through reciprocating swing of the driving blade assembly 7, the driving end bearing assembly 5, the sliding end bearing assembly 10 and the rolling bearing 13 realize three-point coaxiality adjustment, wherein the driving end bearing assembly 5 is an angular contact ball bearing, the sliding end bearing assembly 10 is a radial bearing, the driving end bearing assembly 5 realizes large-gap adjustment, the sliding end bearing assembly 10 performs small-gap adjustment, and the rolling bearing 13 realizes self-adaption and rigidity adjustment.
The embodiment also comprises a vertical fairing 12 and a horizontal fairing 14, wherein the horizontal fairing 14 and the vertical fairing 12 are respectively installed on the inner wall of the rack in the transverse direction and the longitudinal direction, and the whole structure is rectified to reduce the air flow resistance loss.
The low-speed wind tunnel gust generating device of this embodiment is rational in infrastructure overall arrangement, and the axiality is easily adjusted, and the dismouting is efficient, and the precision that resets is high, can realize the gust simulation of high frequency and wide angle.
Claims (2)
1. The utility model provides a low-speed wind tunnel direct drive formula gust generating device, includes frame, multiunit blade drive arrangement, multiunit blade subassembly, multiunit sliding end support vice, pole subassembly and multiunit antifriction bearing, its characterized in that: the blade driving devices are fixedly arranged on the rack on one side in parallel at fixed intervals, the other end of the rack is fixedly provided with a plurality of sliding end support pairs in parallel at the same corresponding intervals, one end of each blade assembly is connected with the corresponding blade driving device, the other end of each blade assembly is rotatably connected with the other side of the rack through the sliding end support pairs, and the blade assemblies are parallel; the blade driving device comprises a hydraulic swing cylinder, a hydraulic swing cylinder mounting base, a tensioning coupling, a driving end bearing assembly and a driving end rotating shaft; the sliding end support pair comprises a sliding end rotating shaft, a sliding end bearing assembly and a sliding end mounting base; the hydraulic swing mechanism comprises a rack, a plurality of groups of hydraulic swing cylinder mounting bases, a plurality of groups of sliding end mounting bases, a set of tension coupling, a set of driving end rotating shaft, a set of torque sensor, a set of rotating shaft driving end and a set of sliding end rotating shaft, wherein the hydraulic swing cylinders are fixedly mounted on one side of the rack in parallel at fixed intervals, the sliding end mounting bases are fixedly mounted on the other end of the rack in parallel at the same corresponding interval, each group of hydraulic swing cylinders are mounted on the hydraulic swing cylinder mounting bases, each group of hydraulic swing cylinders are connected with one driving end rotating shaft through the set of tension coupling, one end of the driving end rotating shaft is located in the driving end bearing assembly, when each group of hydraulic swing cylinders swing in a reciprocating mode, torque monitoring is carried out through the torque sensor mounted on each group of hydraulic swing cylinders, the other end of each rotating shaft driving end is connected with one end of a group of blade assemblies, the other end of the group of blade assemblies is connected with one sliding end rotating shaft, and the sliding end rotating shaft of the group of sliding end rotating shafts is mounted on the sliding end mounting bases through the sliding end bearing assemblies; the pull rod assembly and the blade assemblies are mutually vertical, the upper end and the lower end of the pull rod assembly are respectively and fixedly connected with an upper beam and a lower beam of the rack, each blade assembly comprises 2 blade units, one side end part of each blade unit is fixedly connected into an integral structure through a rotating shaft, the rotating shaft is arranged on the inner ring of the rolling bearing, and the pull rod assembly is respectively and fixedly connected with the bearing seats of a plurality of groups of rolling bearings; the rolling bearing is further provided with a position adjusting assembly, the pull rod assembly comprises a multi-section pull rod, and the pull rod is connected with the position adjusting assembly and used for adjusting the coaxiality of the blade assembly.
2. The low-speed wind tunnel direct-drive gust generation device according to claim 1, characterized in that: the horizontal fairing and the vertical fairing are respectively installed on the inner wall of the rack in the transverse direction and the longitudinal direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110505102.9A CN113267315B (en) | 2021-05-10 | 2021-05-10 | Low-speed wind tunnel direct-drive gust generating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110505102.9A CN113267315B (en) | 2021-05-10 | 2021-05-10 | Low-speed wind tunnel direct-drive gust generating device |
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| CN113267315A CN113267315A (en) | 2021-08-17 |
| CN113267315B true CN113267315B (en) | 2022-10-21 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465868B (en) * | 2021-08-20 | 2023-04-14 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113567085B (en) * | 2021-08-20 | 2023-03-31 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
| CN113465867B (en) * | 2021-08-20 | 2023-03-31 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465870B (en) * | 2021-08-20 | 2023-03-31 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113465871B (en) * | 2021-08-20 | 2023-04-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465869B (en) * | 2021-08-20 | 2023-03-31 | 中国空气动力研究与发展中心高速空气动力研究所 | Two-side blade grid high-speed wind tunnel gust simulation device |
| CN114235329B (en) * | 2021-12-02 | 2024-08-13 | 中国航空工业集团公司西安飞机设计研究所 | Full-machine sudden-wind load wind tunnel test device |
| CN115371945B (en) * | 2022-08-09 | 2023-03-03 | 中国航空工业集团公司哈尔滨空气动力研究所 | Combined frequency variable waveform wind tunnel test gust generation system |
Citations (3)
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|---|---|---|---|---|
| CN102943745A (en) * | 2012-12-07 | 2013-02-27 | 桂林理工大学 | Vertical-shaft grid curtain type small wind driven generator |
| CN207528421U (en) * | 2017-11-15 | 2018-06-22 | 南京航空航天大学 | A kind of wind tunnel experiment fitful wind generating means |
| CN112014061A (en) * | 2020-10-13 | 2020-12-01 | 中国航空工业集团公司哈尔滨空气动力研究所 | Vibration damper of oscillating blade gust generator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303874A (en) * | 2000-04-19 | 2001-10-31 | Hirohide Azuma | Shading light surface divided type blind |
| CN101943123B (en) * | 2010-01-18 | 2016-01-20 | 马瑞志 | A kind of building wind-tunnel type wind power machine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943745A (en) * | 2012-12-07 | 2013-02-27 | 桂林理工大学 | Vertical-shaft grid curtain type small wind driven generator |
| CN207528421U (en) * | 2017-11-15 | 2018-06-22 | 南京航空航天大学 | A kind of wind tunnel experiment fitful wind generating means |
| CN112014061A (en) * | 2020-10-13 | 2020-12-01 | 中国航空工业集团公司哈尔滨空气动力研究所 | Vibration damper of oscillating blade gust generator |
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