CN116067609A - High-precision positioning device and method for large-tonnage movable test section - Google Patents
High-precision positioning device and method for large-tonnage movable test section Download PDFInfo
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- CN116067609A CN116067609A CN202310333048.3A CN202310333048A CN116067609A CN 116067609 A CN116067609 A CN 116067609A CN 202310333048 A CN202310333048 A CN 202310333048A CN 116067609 A CN116067609 A CN 116067609A
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention relates to the field of aero aerodynamic wind tunnel tests and discloses a high-precision positioning device and a high-precision positioning method for a large-tonnage movable test section. The invention solves the problem of limited deviation rectifying capability in the high-precision positioning process of the movable test section.
Description
Technical Field
The invention relates to the field of aero aerodynamic wind tunnel test, in particular to a high-precision positioning device and method for a large-tonnage movable test section.
Background
Aerodynamics is a basic science for developing aerospace technology and other industrial technologies, and wind tunnel experiments are one of basic methods for aerodynamics research. The test section is a place where the model performs wind tunnel test, and is one of important components of the wind tunnel. Different wind tunnel tests often need different test sections, so that a plurality of test sections are arranged in a plurality of wind tunnels for different tests, and if the positions of the test sections deviate, the quality of a flow field and the test result can be influenced, so that the positioning of the test sections is particularly important. For large wind tunnels, accurate positioning of large-tonnage test sections is always a difficult problem to solve, and some test sections are positioned by using a track guide, so that the positioning is easy to realize, but the high-precision positioning is not easy to keep for a long time. Only a rail guiding positioning mode is adopted, so that rails are easy to wear, and positioning accuracy is reduced after the rails are worn; for large tonnage test sections, the ability to correct the deviation is limited. In view of the above, a practical and effective positioning manner is urgently needed, and accurate positioning of a large-tonnage test section can be achieved.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a high-precision positioning device and a high-precision positioning method for a large-tonnage movable test section.
The invention adopts the following specific scheme: the invention provides a high-precision positioning device of a continuous wind tunnel large-tonnage movable test section, which comprises a transverse positioning device and an axial positioning device;
the transverse positioning device comprises a fixed positioning block and an adjustable positioning block, wherein the fixed positioning block is arranged on one side of the upper part of the base, the adjustable positioning block is arranged on the other side of the upper part of the base, the bottom of the adjustable positioning block is provided with a mounting seat, the bottom of the mounting seat is provided with a hydraulic actuator, the side wall of the bottom of the test section is symmetrically provided with positioning plates, and the adjustable positioning block is arranged opposite to one of the positioning plates; the fixed positioning block is arranged opposite to the other positioning plate;
the axial positioning device comprises an axial positioning seat, a spray pipe section positioning seat and a lifter, wherein the tail end of the lifter is connected with a plug pin, the lifter, the plug pin and the spray pipe section positioning seat are arranged at the tail part of the spray pipe section, pin holes for the plug pin to pass through are formed in the axial positioning seat and the spray pipe section positioning seat, the axial positioning seat is inserted into the spray pipe section positioning seat, and the lifter drives the plug pin to extend out of the pin holes of the insertion positioning seat to axially position the test section.
The base is arranged at the bottom of the wind tunnel, guide rails perpendicular to each other are arranged on the base, and a steerable wheel set is arranged at the bottom of the test section.
The number of the guide rails is 4, wherein 2 guide rails are transversely arranged in parallel, and the other 2 guide rails are longitudinally arranged in parallel.
And one side of the adjustable positioning block, which corresponds to the positioning plate, is provided with an inclined plane.
The inclination angle of the inclined plane is 10-30 degrees.
On the other hand, the invention provides a high-precision positioning method of a continuous wind tunnel large-tonnage movable test section, which comprises the following steps:
step one, driving a test section to the axis position of a wind tunnel;
step two, adjusting the distance between the test section positioning plate and the fixed positioning block to be smaller than 3mm;
step three, the adjustable positioning block is lifted upwards under the action of the hydraulic actuator cylinder, the test section is extruded to the other side and is tightly attached to the fixed positioning block, and the transverse positioning of the test section is completed;
and step four, after the transverse positioning is finished, the test section moves along the axial direction to be tightly attached to the spray pipe section, the lifter is driven to enable the plug pin to extend out and be inserted into the pin hole of the axial positioning seat, and the axial positioning seat is connected with the spray pipe section positioning seat to finish the axial positioning of the test section.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a high-precision positioning device and method for a large-tonnage movable test section. In addition, the invention adopts reasonable combination of hydraulic and electric driving modes to achieve the purpose of accurately positioning the large-tonnage test section, and solves the problem that the wind tunnel test section in the prior art is difficult to position with high precision.
Drawings
FIG. 1 is a schematic view of an apparatus according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a test section laterally adjustable positioning block;
FIG. 4 is a schematic view of a test section axial positioning device;
FIG. 5 is a schematic view of a base of the present invention;
fig. 6 is a schematic view of the track arrangement in the present invention.
Symbol description:
1: fixing the positioning block; 2: an adjustable positioning block; 3: an axial positioning seat; 4: a mounting base; 5: a hydraulic ram; 6: a positioning plate; 7: a spray pipe section positioning seat; 8: a lifter; 9: inserting and pulling pins; 10: base, 11: spray pipe section, 12: and a guide rail.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The invention discloses a high-precision positioning device for a large-tonnage movable test section of a continuous wind tunnel, which is combined with figures 1-6, wherein the positioning device comprises a transverse positioning device and an axial positioning device; the transverse positioning device comprises a fixed positioning block 1 and an adjustable positioning block 2, wherein the fixed positioning block 1 is arranged on one side of the upper part of a base 10, the adjustable positioning block 2 is arranged on the other side of the upper part of the base 10, an installation seat 4 is arranged at the bottom of the adjustable positioning block 2, a hydraulic actuating cylinder 5 is arranged at the bottom of the installation seat 4, positioning plates 6 are symmetrically arranged on the side wall of the bottom of the test section, and the adjustable positioning block 2 and one positioning plate 6 are oppositely arranged; the fixed positioning block 1 is arranged opposite to the other positioning plate 6; the axial positioning device comprises an axial positioning seat 3, a spray pipe section positioning seat 7 and a lifter 8, wherein the tail end of the lifter 8 is connected with a plug pin 9, the lifter 8, the plug pin 9 and the spray pipe section positioning seat 7 are arranged at the tail part of a spray pipe section 11, pin holes for the plug pin 9 to pass through are formed in the axial positioning seat 3 and the spray pipe section positioning seat 7, the axial positioning seat 3 is inserted into the spray pipe section positioning seat 7, and the lifter 8 drives the plug pin 9 to extend out of the pin holes of the plug positioning seat to realize axial positioning of a test section.
The base 10 is arranged at the bottom of the wind tunnel and is positioned below the test section, the base 10 is provided with guide rails 12 which are perpendicular to each other, and the bottom of the test section is provided with a steerable wheel set matched with the guide rails 12. The number of the guide rails 12 is 4, wherein 2 guide rails 12 are transversely arranged in parallel, and the other 2 guide rails 12 are longitudinally arranged in parallel. An inclined plane is arranged on one side of the adjustable positioning block 2 corresponding to the positioning plate 6. The inclination angle (alpha in fig. 3) of the inclined surface is 10-30 deg..
On the other hand, the invention provides a high-precision positioning method of a continuous wind tunnel large-tonnage movable test section, which comprises the following steps: step one, driving a test section to the axis position of a wind tunnel; step two, adjusting the distance between the test section positioning plate 6 and the fixed positioning block 1 to be smaller than 3mm; step three, the adjustable positioning block 2 is lifted upwards under the action of the hydraulic actuator 5, the test section is extruded to the other side and is tightly attached to the fixed positioning block 1, and the transverse positioning of the test section is completed; and step four, after the transverse positioning is finished, the test section moves along the axial direction and is tightly attached to the spray pipe section, the lifter 8 drives the plug pin 9 to extend out and insert into the pin hole of the axial positioning seat 3, the axial positioning seat 3 is connected with the spray pipe section positioning seat 7, and the axial positioning of the test section is finished.
In one embodiment, the number of the fixed positioning blocks 1 and the number of the adjustable positioning blocks 2 are 2 respectively, the transverse positioning of the test section adopts a combination mode of the fixed positioning blocks 1 and the adjustable positioning blocks 2, when the test section runs to the axis position of the wind tunnel along the transverse track, the test section stops when the distance between the positioning plate in front of the test section and the fixed positioning blocks 1 is smaller than 3mm, and if the distance between the two groups of fixed positioning blocks and the positioning plate is larger, the difference is reduced by adopting a unilateral wheel running mode (reaching less than 3 mm); the adjustable positioning block 2 on the other side is lifted upwards under the action of the hydraulic actuating cylinder 5, the test section is extruded to the other direction by utilizing the inclined plane of the positioning block until the fixed positioning block 1 on the other side is tightly attached, and the transverse positioning of the test section is completed.
After the transverse positioning is completed, the test section moves along the axial direction and is tightly attached to the spray pipe section 11, four groups of axial positioning seats 3 are arranged at four corners of the front end surface of the test section (the axial positioning seats are plates or blocks with pin control in the middle), the lifter 8 drives the plug pins 9 to extend into pin seats of the spray pipe section positioning seats 7 at corresponding positions of the spray pipe section 11, then drives the plug pins 9 on the pin seats to be inserted into corresponding pin holes on the axial positioning seats 3, and conical surfaces are arranged at the front ends of the plug pins 9 to pull the test section to the correct positions by utilizing the action of the conical surfaces.
The invention can realize the accurate positioning of the test section in the transverse direction (vertical air flow direction) and the axial direction (air flow direction), and can achieve the effects that the step difference between the test section and the adjacent section is not more than 0.5mm and the axis deviation is not more than 0.01 degrees. According to the invention, the transverse positioning of the test section is realized by adopting a mode of combining the fixed positioning block 1 and the adjustable positioning block 2, and the axial positioning of the test section is realized by adopting the plug pin 9. The invention adopts reasonable combination of hydraulic and electric driving modes to achieve the purpose of accurate positioning of a large-tonnage test section.
The foregoing drawings and description are only one embodiment of the present invention, but the specific scope of the present invention is not limited to the above description, and any simple replacement or modification within the scope of the technical idea disclosed in the present invention and according to the technical scheme of the present invention should be within the scope of the present invention.
Claims (6)
1. The high-precision positioning device for the large-tonnage movable test section is characterized by comprising a transverse positioning device and an axial positioning device;
the transverse positioning device comprises a fixed positioning block (1) and an adjustable positioning block (2), wherein the fixed positioning block (1) is arranged on one side of the upper part of a base (10), the adjustable positioning block (2) is arranged on the other side of the upper part of the base (10), an installation seat (4) is arranged at the bottom of the adjustable positioning block (2), a hydraulic actuating cylinder (5) is arranged at the bottom of the installation seat (4), positioning plates (6) are symmetrically arranged on the side wall of the bottom of a test section, and the adjustable positioning block (2) and one positioning plate (6) are oppositely arranged; the fixed positioning block (1) is arranged opposite to the other positioning plate (6);
the axial positioning device comprises an axial positioning seat (3), a spray pipe section positioning seat (7) and a lifter (8), wherein the tail end of the lifter (8) is connected with a plug pin (9), the lifter (8), the plug pin (9) and the spray pipe section positioning seat (7) are arranged at the tail part of a spray pipe section (11), pin holes for the plug pin (9) to pass through are formed in the axial positioning seat (3) and the spray pipe section positioning seat (7), the axial positioning seat (3) is inserted into the spray pipe section positioning seat (7), and the lifter (8) drives the plug pin (9) to extend out of the pin holes of the plug positioning seat to realize axial positioning of a test section.
2. The high-precision positioning device for the large-tonnage movable test section according to claim 1, wherein the base (10) is arranged at the bottom of the wind tunnel, mutually perpendicular guide rails (12) are arranged on the base (10), and the bottom of the test section is provided with a steerable wheel set.
3. The high-precision positioning device for large-tonnage movable test sections according to claim 2, wherein the number of the guide rails (12) is 4, 2 guide rails (12) are transversely arranged in parallel, and the other 2 guide rails (12) are longitudinally arranged in parallel.
4. A high precision positioning apparatus for large tonnage movable test section according to claim 3, wherein the side of the adjustable positioning block (2) corresponding to the positioning plate (6) is provided with an inclined surface.
5. The high precision positioning apparatus for large tonnage movable test fields according to claim 4, wherein the inclination angle of the inclined plane is 10-30 °.
6. A method for high-precision positioning of a large-tonnage movable test piece, characterized in that the method is realized based on the high-precision positioning device of a large-tonnage movable test piece according to any one of claims 1 to 5, and the method comprises the following steps:
step one, driving a test section to the axis position of a wind tunnel;
step two, adjusting the distance between the test section positioning plate (6) and the fixed positioning block (1) to be smaller than 3mm;
step three, the adjustable positioning block (2) is lifted upwards under the action of the hydraulic actuating cylinder (5), the test section is extruded to the other side to be tightly attached to the fixed positioning block (1), and the transverse positioning of the test section is completed;
and fourthly, after the transverse positioning is finished, the test section moves along the axial direction to be tightly attached to the spray pipe section (11), the lifter (8) is driven to enable the plug pin (9) to extend out and be inserted into the pin hole of the axial positioning seat (3), the axial positioning seat (3) is connected with the spray pipe section positioning seat (7), and the axial positioning of the test section is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310333048.3A CN116067609B (en) | 2023-03-31 | 2023-03-31 | High-precision positioning device and method for large-tonnage movable test section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310333048.3A CN116067609B (en) | 2023-03-31 | 2023-03-31 | High-precision positioning device and method for large-tonnage movable test section |
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| CN116067609A true CN116067609A (en) | 2023-05-05 |
| CN116067609B CN116067609B (en) | 2023-06-20 |
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