CN116577064B - Manual adjustment mechanism for wind tunnel test section wallboard expansion angle and adjustment method thereof - Google Patents
Manual adjustment mechanism for wind tunnel test section wallboard expansion angle and adjustment method thereof Download PDFInfo
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- CN116577064B CN116577064B CN202310847823.7A CN202310847823A CN116577064B CN 116577064 B CN116577064 B CN 116577064B CN 202310847823 A CN202310847823 A CN 202310847823A CN 116577064 B CN116577064 B CN 116577064B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention belongs to the technical field of wind tunnel equipment, and discloses a manual adjusting mechanism for a wind tunnel test section wallboard expansion angle and an adjusting method thereof. The adjusting mechanism is used for a transonic wind tunnel which needs to adjust the expansion angle of the wallboard of the test section and is arranged on the wallboard of the test section; the hinge seat of the adjusting mechanism is a rod type hinge seat, the wallboard is a horizontal frame, the pull rod is a round rod, and the threaded section of the pull rod is sleeved with a thick nut, a sleeve and a thin nut from top to bottom in sequence; the center of the sleeve is provided with a rotating shaft III, the left and right sides of the ear seat are sleeved at the left and right ends of the rotating shaft III, and the bottom surface of the ear seat is fixed on the test section. The adjusting method is used for adjusting the opening angle of the wallboard by screwing the unscrewed nut, and locking the opening angle of the wallboard by screwing the thin nut. The adjusting mechanism has small volume, low cost, high reliability, high safety and convenient operation; the adjusting method realizes manual adjustment, and achieves the beneficial effects of reducing the manufacturing cost of the cross supersonic wind tunnel, improving the reliability of the adjusting mechanism and optimizing the wallboard space of the test section.
Description
Technical Field
The invention belongs to the technical field of wind tunnel equipment, and particularly relates to a manual adjustment mechanism and an adjustment method for a wind tunnel test section wallboard expansion angle.
Background
In a transsupersonic wind tunnel, the wall plate of the wind tunnel test section is designed to be adjustable in angle, and the effect is that in some special tests, the expansion angle of the test section is adjusted by adjusting the angle of the wall plate of the test section, so that the axial Mach number gradient of the test section is eliminated. At present, the expansion angle of the wallboard of the test section is automatically adjusted by a motor and a spiral lifter, and the wallboard has the defects of high manufacturing cost, high failure rate, complex structure, large occupied space of a driving mechanism and the like. Because the adjustment time of the expansion angle of the wallboard of the test section is before the wind tunnel test starts, real-time adjustment is not needed in the wind tunnel test process, the adjustment times of the expansion angle of the wallboard of the test section are limited each year, and the expansion angle of the wallboard of the test section is adjusted once even for several years, and the adjustment of the expansion angle of the wallboard of the test section can be completely realized by adopting a manual adjustment mechanism with lower cost, more reliability and smaller size.
Currently, a manual adjustment mechanism and an adjustment method for the expansion angle of the wall plate of the wind tunnel test section are required to be invented.
Disclosure of Invention
The invention aims to provide a manual adjustment mechanism for the expansion angle of a wind tunnel test section wall plate, and aims to provide a manual adjustment method for the expansion angle of the wind tunnel test section wall plate, which is used for overcoming the defects of the prior art.
The manual adjusting mechanism for the expansion angle of the wind tunnel test section wallboard is characterized in that the manual adjusting mechanism is used for a transonic wind tunnel which needs to adjust the expansion angle of the test section wallboard and is arranged on the test section wallboard;
the adjusting mechanism comprises a hinge seat assembly and a corresponding pull rod assembly; the hinge seat assembly comprises a hinge seat and a rotating shaft I; the pull rod assembly comprises a rotating shaft II, a pull rod, a thin nut, a thick nut, a sleeve, an ear seat and a rotating shaft III;
the hinge seat is a vertical inverted rod type hinge seat, the upper surface of the base is fixed on the test section frame, the top end of the base is connected with the support leg at the lower part of the front end face of the wallboard through a rotating shaft I, and a gap which is adaptive to the expansion angle adjusting range of the wallboard is arranged between the hinge seat and the front end face of the wallboard;
the wallboard is a horizontal frame, a supporting leg I at the lower part of the front end surface is connected with the hinge seat through a rotating shaft I, and a supporting leg II at the upper part of the rear section is connected with the pull rod through a rotating shaft II;
the pull rod is a round rod which is vertically arranged, the lower end of the pull rod is connected with a support leg II above the rear section of the wallboard through a rotating shaft II, a threaded section is processed at the upper end of the pull rod, and a thick nut, a sleeve and a thin nut are sleeved on the threaded section in sequence from top to bottom;
the thin nut has the function of locking the position of the thick nut;
the thick nut has the function of upward or downward movement and adjusting the expansion angle of the wallboard of the test section;
the center point of the sleeve is provided with a through hole which is penetrated left and right; the number of the rotating shafts III is 2, the rotating shafts III are symmetrically inserted into the through holes from the left side and the right side respectively, the left end of the left rotating shaft III extends out of the through holes from the left side, and the right end of the right rotating shaft III extends out of the through holes from the right side; the pull rod penetrates through the center of the through hole from top to bottom;
the left side and the right side of the ear seat are correspondingly sleeved at the left end of the left rotating shaft III and the right end of the right rotating shaft III, and the bottom surface of the ear seat is fixed on the test section;
the materials of all parts of the manual adjusting mechanism are stainless steel suitable for a deep low-temperature environment at the temperature of-196 ℃; when the weight of the wallboard is more than or equal to 30t, the accuracy range of the expansion angle of the wallboard of the wind tunnel test section of the manual adjusting mechanism is [ 0.01 degrees, 0.01 degrees ].
Further, the hinge seat component and the corresponding pull rod component are two groups and symmetrically distributed on the left side and the right side of the wallboard.
Further, the materials of the rotating shaft I, the rotating shaft II and the rotating shaft III are all S03 stainless steel.
Further, sliding bearings are arranged on the rotating shaft I, the rotating shaft II and the rotating shaft III and used for reducing rotating friction force; the sliding bearings are low-temperature sliding bearings and are suitable for a deep low-temperature environment at-196 ℃.
Further, the rotating shafts I and II are connected with the end covers through bolts, and the side end covers on the rotating shaft III are connected with the lug seats through bolts.
Further, a flat key is arranged at the fixed position of the bottom surface of the ear seat and the test section, and the flat key is used for resisting shearing force.
The invention discloses a manual adjustment method for the expansion angle of a wind tunnel test section wallboard, which comprises the following steps:
if the expansion angle of the wallboard needs to be increased upwards, firstly loosening the thin nut, then screwing the thick nut to lift the pull rod upwards, simultaneously, rotating the sleeve around the lug seat through the rotating shaft III, rotating the pull rod around the wallboard through the rotating shaft II, rotating the wallboard around the hinge seat through the rotating shaft I, and screwing the thin nut locking mechanism after the wallboard rises to a preset position;
if the expansion angle of the wallboard needs to be reduced downwards, the thick nut is unscrewed, the pull rod and the thin nut are synchronously lowered, the sleeve rotates around the lug seat through the rotating shaft III, the pull rod rotates around the wallboard through the rotating shaft II, the wallboard rotates around the hinge seat through the rotating shaft I, and the thin nut locking mechanism is screwed after the wallboard descends to a preset position.
The manual adjusting mechanism and the adjusting method for the expansion angle of the wind tunnel test section wall plate are special mechanisms specially developed for the manual adjusting requirement of the expansion angle of the test section wall plate of the cross supersonic wind tunnel, and have the advantages of small size, low cost, high reliability, high safety and convenience in operation; the manual adjustment of the expansion angle of the wallboard of the test section is realized, the beneficial effects of reducing the manufacturing cost of the cross supersonic wind tunnel, improving the reliability of the adjusting mechanism and optimizing the space of the wallboard of the test section are achieved, and the manual adjustment device can be popularized and applied to other facility equipment needing to develop the manual adjustment angle.
Drawings
FIG. 1a is a schematic structural view (front view for angle adjustment) of a manual adjustment mechanism for the wind tunnel test section wall plate expansion angle of the present invention;
FIG. 1b is a schematic structural view (front view, partial enlarged view) of a manual adjustment mechanism for the wind tunnel test section panel expansion angle of the present invention;
FIG. 2 is a schematic structural view (before angle adjustment, side view) of a manual adjustment mechanism for the wind tunnel test section wall plate expansion angle of the present invention;
FIG. 3 is a cross-sectional view A-A of a schematic structural view of a manual wind tunnel test section panel expansion angle adjusting mechanism of the present invention;
FIG. 4a is a schematic structural view (after angle adjustment, front view) of a manual adjustment mechanism for the wind tunnel test section wall plate expansion angle according to the present invention;
fig. 4b is a schematic structural view (after angle adjustment, front view, partial enlarged view) of the manual adjustment mechanism for the wind tunnel test section wall plate expansion angle of the present invention.
In the figure, 1. A hinge base; 2. a rotating shaft I; 3. a wall plate; 4. a rotating shaft II; 5. a pull rod; 6. a thin nut; 7. a thick nut; 8. a sleeve; 9. an ear seat; 10. and a rotating shaft III.
Detailed Description
The invention is described in detail below with reference to the drawings and examples.
Example 1:
the manual adjusting mechanism for the expansion angle of the wall plate of the wind tunnel test section is applied to a large transonic wind tunnel, and the wall plate 3 is 10m long, 2.4m wide and has a weight of about 30t. The range of the expansion angle of the wall plate 3 to be adjusted is-0.5 degrees to +1 degrees (the pull rod 5 is a positive angle upwards), the displacement value converted into the pull rod 5 is-60 mm to +120mm, and the accuracy range of the expansion angle adjustment of the wall plate of the wind tunnel test section is-0.01 degrees and 0.01 degrees. The diameters of the rotating shaft I2, the rotating shaft II 4 and the rotating shaft III 10 are 60mm, and the thin nut 6 and the thick nut 7 are M60 nuts.
As shown in fig. 1a, 1b, 2 and 3, the manual adjustment mechanism for the expansion angle of the wind tunnel test section wallboard is characterized in that the manual adjustment mechanism is used for a transonic wind tunnel which needs to adjust the expansion angle of the test section wallboard and is arranged on the test section wallboard 3;
the adjusting mechanism comprises a hinge seat assembly and a corresponding pull rod assembly; the hinge seat assembly comprises a hinge seat 1 and a rotating shaft I2; the pull rod assembly comprises a rotating shaft II 4, a pull rod 5, a thin nut 6, a thick nut 7, a sleeve 8, an ear seat 9 and a rotating shaft III 10;
the hinge seat 1 is a vertically inverted rod type hinge seat, the upper surface of the base is fixed on the test section frame, the top end of the base is connected with a support leg at the lower part of the front end face of the wall plate 3 through a rotating shaft I2, and a gap which is adaptive to the expansion angle adjusting range of the wall plate 3 is arranged between the hinge seat 1 and the front end face of the wall plate 3;
the wall plate 3 is a horizontal frame, the support leg I at the lower part of the front end surface is connected with the hinge seat 1 through a rotating shaft I2, and the support leg II at the upper part of the rear section is connected with the pull rod 5 through a rotating shaft II 4;
the pull rod 5 is a round rod which is vertically arranged, the lower end of the pull rod 5 is connected with a support leg II above the rear section of the wallboard 3 through a rotating shaft II 4, a threaded section is processed at the upper end of the pull rod 5, and a thick nut 7, a sleeve 8 and a thin nut 6 are sleeved on the threaded section in sequence from top to bottom;
the thin nut 6 has the function of locking the position of the thick nut 7;
the thick nut 7 has the function of upward or downward movement and adjustment of the expansion angle of the wallboard of the test section;
the center point of the sleeve 8 is provided with a through hole which is penetrated left and right; the number of the rotating shafts III 10 is 2, the rotating shafts III are symmetrically inserted into the through holes from the left side and the right side respectively, the left end of the left rotating shaft III 10 extends out of the through holes from the left side, and the right end of the right rotating shaft III 10 extends out of the through holes from the right side; the pull rod 5 penetrates through the center of the through hole from top to bottom;
the left side and the right side of the ear seat 9 are correspondingly sleeved at the left end of the left rotating shaft III 10 and the right end of the right rotating shaft III 10, and the bottom surface of the ear seat 9 is fixed on the test section;
the materials of all parts of the manual adjusting mechanism are stainless steel suitable for a deep low-temperature environment at the temperature of-196 ℃; when the weight of the wall plate 3 is more than or equal to 30t, the accuracy range of the wind tunnel test section wall plate expansion angle adjustment of the manual adjustment mechanism is [ 0.01 degrees, 0.01 degrees ].
Further, the hinge seat component and the corresponding pull rod component are two groups and symmetrically distributed on the left side and the right side of the wall plate 3.
Further, the rotating shafts I2, II 4 and III 10 are all made of S03 stainless steel.
Further, sliding bearings are arranged on the rotating shafts I2, II 4 and III 10 for reducing the rotating friction force; the sliding bearings are low-temperature sliding bearings and are suitable for a deep low-temperature environment at-196 ℃.
Further, the rotating shafts I2 and II 4 are connected with the end covers through bolts, and the side end covers on the rotating shaft III 10 are connected with the lug seats 9 through bolts.
Further, a flat key is arranged at the fixed position of the bottom surface of the ear seat 9 and the test section, and the flat key is used for resisting shearing force.
The invention discloses a manual adjustment method for the expansion angle of a wind tunnel test section wallboard, which comprises the following steps:
as shown in fig. 1a and 1b, if the expansion angle of the wall plate 3 needs to be increased upwards, firstly loosening the thin nut 6, then screwing the thick nut 7 to lift the pull rod 5 upwards, simultaneously, rotating the sleeve 8 around the lug seat 9 through the rotating shaft iii 10, rotating the pull rod 5 around the wall plate 3 through the rotating shaft ii 4, rotating the wall plate 3 around the hinge seat 1 through the rotating shaft i 2, and screwing the thin nut 6 to a locking mechanism after the wall plate 3 rises to a preset position;
as shown in fig. 4a and 4b, if the expansion angle of the wall plate 3 needs to be reduced downwards, the thick nut 7 is unscrewed, the pull rod 5 and the thin nut 6 are synchronously lowered, the sleeve 8 rotates around the lug seat 9 through the rotating shaft iii 10, the pull rod 5 rotates around the wall plate 3 through the rotating shaft ii 4, the wall plate 3 rotates around the hinge seat 1 through the rotating shaft i 2, and after the wall plate 3 descends to a preset position, the thin nut 6 is screwed to lock the mechanism.
Although embodiments of the invention have been disclosed in the foregoing description and illustrated in the drawings, it will be understood by those skilled in the art that the present invention is not limited to the specific details and illustrations of features and steps set forth herein, and that all features of the invention disclosed, or steps of the method or process, except for mutually exclusive features and/or steps, may be combined in any manner without departing from the principles of the invention.
Claims (7)
1. The manual adjusting mechanism is used for a transonic wind tunnel of which the expansion angle of the wall plate of the test section needs to be adjusted and is arranged on the wall plate (3) of the test section;
the adjusting mechanism comprises a hinge seat assembly and a corresponding pull rod assembly; the hinge seat assembly comprises a hinge seat (1) and a rotating shaft I (2); the pull rod assembly comprises a rotating shaft II (4), a pull rod (5), a thin nut (6), a thick nut (7), a sleeve (8), an ear seat (9) and a rotating shaft III (10);
the hinge seat (1) is a vertically inverted rod type hinge seat, the upper surface of the base is fixed on the test section frame, the top end of the base is connected with the support leg at the lower part of the front end face of the wallboard (3) through the rotating shaft I (2), and a gap which is adaptive to the expansion angle adjusting range of the wallboard (3) is arranged between the hinge seat (1) and the front end face of the wallboard (3);
the wall plate (3) is a horizontal frame, the support leg I at the lower part of the front end surface is connected with the hinge seat (1) through the rotating shaft I (2), and the support leg II above the rear section is connected with the pull rod (5) through the rotating shaft II (4);
the pull rod (5) is a round rod which is vertically arranged, the lower end of the pull rod (5) is connected with a support leg II above the rear section of the wallboard (3) through a rotating shaft II (4), a threaded section is processed at the upper end of the pull rod (5), and a thick nut (7), a sleeve (8) and a thin nut (6) are sleeved on the threaded section in sequence from top to bottom;
the thin nut (6) has the function of locking the position of the thick nut (7);
the thick nut (7) has the function of upward or downward movement and adjustment of the expansion angle of the wallboard of the test section;
a through hole which penetrates left and right is formed in the center point of the sleeve (8); 2 rotating shafts III (10) are symmetrically inserted into the through holes from the left side and the right side respectively, the left end of the left rotating shaft III (10) extends out of the through holes from the left side, and the right end of the right rotating shaft III (10) extends out of the through holes from the right side; the pull rod (5) penetrates through the center of the through hole from top to bottom;
the left side and the right side of the ear seat (9) are correspondingly sleeved at the left end of the left rotating shaft III (10) and the right end of the right rotating shaft III (10), and the bottom surface of the ear seat (9) is fixed on the test section;
the materials of all parts of the manual adjusting mechanism are stainless steel suitable for a deep low-temperature environment at the temperature of-196 ℃; when the weight of the wall plate (3) is more than or equal to 30t, the accuracy range of the expansion angle of the wall plate of the wind tunnel test section of the manual adjusting mechanism is [ 0.01 degrees, 0.01 degrees ].
2. The manual adjustment mechanism for the expansion angle of the wall plate of the wind tunnel test section according to claim 1, wherein two groups of hinge seat assemblies and corresponding pull rod assemblies are symmetrically distributed on the left side and the right side of the wall plate (3).
3. The manual adjustment mechanism for the expansion angle of the wall plate of the wind tunnel test section according to claim 1, wherein the rotating shaft I (2), the rotating shaft II (4) and the rotating shaft III (10) are all made of S03 stainless steel.
4. The manual adjustment mechanism for the expansion angle of the wind tunnel test section wallboard according to claim 1, wherein sliding bearings are arranged on the rotating shaft I (2), the rotating shaft II (4) and the rotating shaft III (10) respectively and are used for reducing the rotating friction force; the sliding bearings are low-temperature sliding bearings and are suitable for a deep low-temperature environment at-196 ℃.
5. The manual adjusting mechanism for the expansion angle of the wind tunnel test section wallboard according to claim 1, wherein the rotating shafts I (2) and II (4) are connected with the end covers through bolts, and the side end covers on the rotating shaft III (10) are connected with the lug seats (9) through bolts.
6. The manual adjustment mechanism for the expansion angle of the wind tunnel test section wallboard according to claim 1, wherein a flat key is arranged at a position where the bottom surface of the ear seat (9) is fixed with the test section, and the flat key is used for resisting shearing force.
7. The manual adjustment method for the expansion angle of the wind tunnel test section wall plate is used for the manual adjustment mechanism for the expansion angle of the wind tunnel test section wall plate in any one of claims 1-6 and is characterized by comprising the following steps:
if the expansion angle of the wallboard (3) needs to be increased upwards, firstly loosening the thin nut (6), then upwards lifting the pull rod (5) by screwing the thick nut (7), simultaneously, rotating the sleeve (8) around the lug seat (9) through the rotating shaft III (10), rotating the pull rod (5) around the wallboard (3) through the rotating shaft II (4), rotating the wallboard (3) around the hinge seat (1) through the rotating shaft I (2), and screwing the thin nut (6) to lock the mechanism after the wallboard (3) rises to a preset position;
if the expansion angle of the wallboard (3) needs to be reduced downwards, the loosening nut (7) is screwed, the pull rod (5) and the thin nut (6) are synchronously lowered, the sleeve (8) rotates around the lug seat (9) through the rotating shaft III (10), the pull rod (5) rotates around the wallboard (3) through the rotating shaft II (4), the wallboard (3) rotates around the hinge seat (1) through the rotating shaft I (2), and the wallboard (3) descends to a preset position, and then the thin nut (6) is screwed to lock the mechanism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310847823.7A CN116577064B (en) | 2023-07-12 | 2023-07-12 | Manual adjustment mechanism for wind tunnel test section wallboard expansion angle and adjustment method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310847823.7A CN116577064B (en) | 2023-07-12 | 2023-07-12 | Manual adjustment mechanism for wind tunnel test section wallboard expansion angle and adjustment method thereof |
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