CN110187460B - Multi-degree-of-freedom high-strength high-precision adjusting table suitable for wind tunnel environment - Google Patents
Multi-degree-of-freedom high-strength high-precision adjusting table suitable for wind tunnel environment Download PDFInfo
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- CN110187460B CN110187460B CN201910403398.6A CN201910403398A CN110187460B CN 110187460 B CN110187460 B CN 110187460B CN 201910403398 A CN201910403398 A CN 201910403398A CN 110187460 B CN110187460 B CN 110187460B
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- 238000013519 translation Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims description 70
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 5
- 238000009966 trimming Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
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- Details Of Measuring And Other Instruments (AREA)
Abstract
The invention discloses a multi-degree-of-freedom high-strength high-precision adjusting table suitable for use in a wind tunnel environment, which has high bearing capacity, can precisely adjust optical load of several tons, can be locked into rigid locking, can be used under vibration or impact, can be used under airtight or severe conditions by electrically controlling pitching, translation, height adjustment and locking, and can be used under airtight or severe conditions to meet the five-degree-of-freedom adjustment of a schlieren main mirror and complete the combination of pitching yaw electric adjustment and high-rigidity locking. The system can ensure the position precision and stability of the adjusting platform under the working conditions of vibration and wind tunnel airflow impact. The invention successfully solves the problem that the precise adjusting table works in the wind tunnel environment, and can be popularized and applied in the wind tunnel similar environment.
Description
Technical Field
The invention relates to the field of optical precise adjustment and alignment, in particular to a multi-degree-of-freedom high-strength high-precision adjustment platform in a wind tunnel environment.
Background
In the field of optical adjustment and alignment, a multi-degree-of-freedom precision adjustment table is indispensable. Various pose adjusting mechanisms such as a translation table, a lifting table, a rotation adjusting table and an angular displacement table are often used, a plurality of enterprises aiming at the research and development of the products exist in the market at home and abroad at present, the products of the enterprises are various, but most of the multi-dimensional adjusting platforms have smaller table top sizes, and the requirements of large-scale and heavy-weight optical systems are difficult to meet.
The traditional adjusting table generally has no locking function or adopts a motor for self locking, the rigidity of the mode is poor, the position change is easy to occur under the external vibration or impact, and the stability is poor. Especially in wind tunnel environments, the conditioning stations need to face vacuum pumping, ±2kpa airflow shocks and disturbances, environmental temperature changes of-10 ℃ to 50 ℃, and environmental vibrations due to wind tunnel tests. Conventional adjustment tables are not suitable for use in this type of environment.
Disclosure of Invention
The invention aims to provide a high-precision and high-stability adjusting table which is large in table top size and can be used in a wind tunnel environment. The adjusting table has high bearing capacity, and can ensure the position accuracy and stability of the adjusting platform under the working conditions of vibration and impact wind tunnel.
The technical scheme of the invention is to provide a multi-degree-of-freedom high-strength high-precision adjusting table suitable for use in wind tunnel environments, which is characterized in that: comprises a base, a lower table top and an upper table top which are arranged in a lamination way from bottom to top; the device also comprises a translation adjusting mechanism, a yaw adjusting mechanism and at least two groups of high-low pitching adjusting mechanisms which are uniformly distributed;
The upper table top is used for fixing and adjusting the load of the table;
the translation adjusting mechanism is fixed on the upper table top, and the horizontal adjustment of the load of the adjusting table is realized by adjusting the translation adjusting mechanism;
The yaw adjusting mechanism is fixed on the base, and yaw adjustment for adjusting the load of the table is realized by adjusting the yaw adjusting mechanism;
the height and pitch adjusting mechanism is fixed between the lower table top and the upper table top, and the height and pitch adjustment of the load of the adjusting table are realized by adjusting the height and pitch adjusting mechanism.
Further, the translation adjusting mechanism comprises a fine adjustment assembly and a guide limiting assembly; the fine adjustment component and the guide limiting component are fixedly arranged on two opposite side walls of the upper table top;
The fine adjustment assembly comprises a first mounting plate, a fine adjustment screw and an end cover; the first mounting plate is fixed on the side wall of the upper table top, the fine adjustment screw rod passes through the first mounting plate and is in threaded connection with the load of the adjusting table, the end cover is buckled on the head of the fine adjustment screw rod and is fixed on the first mounting plate and used for limiting the fine adjustment screw rod to move along the axial direction of the fine adjustment screw rod, and the center of the end cover is provided with a through hole with the aperture smaller than the outer diameter of the head of the fine adjustment screw rod;
the guide limiting assembly comprises a second mounting plate and a guide rod; the second mounting plate is fixed on the side wall opposite to the upper table surface with the first mounting plate, the guide rod is fixed on the second mounting plate and penetrates through the second mounting plate to be inserted into the guide hole for adjusting the load of the table, and the guide rod is coaxial with the fine adjustment screw.
The adjusting table adjusts horizontal displacement through a translation guiding mechanism, the integral horizontal displacement adjustment of the upper table surface and the load of the adjusting table mounted on the upper table surface is realized, one end of an M20 fine adjustment screw rod is in threaded engagement with the load of the adjusting table in the translation guiding mechanism, and the load can be driven to move through rotating the screw rod. The guide mechanism utilizes the clearance fit of the guide rod and the guide hole of the main mirror frame to ensure that the yaw angle does not change in the translation process.
Further, the high-low pitching adjusting mechanism comprises a first motor, a fine tuning pinion, a fine tuning gearwheel, a fixed screw sleeve, a fine tuning screw sleeve, a locking bolt, a locking nut, a locking gearwheel, a locking pinion and a second motor; the locking nut is positioned in the inner cavity of the fixed screw sleeve; the outer wall of the lock nut is abutted against the inner wall of the fixed screw sleeve; the locking nut can only move axially in the inner cavity of the fixed screw sleeve and cannot rotate.
An output shaft of the first motor is connected with a fine adjustment pinion, and the fine adjustment pinion is meshed with a fine adjustment large gear;
The fine adjustment screw sleeve is fixed on the upper surface of the fine adjustment large gear; the top of the upper table top is contacted with the lower surface of the upper table top;
the fixed screw sleeve is fixed on the upper surface of the lower table top, the top of the fixed screw sleeve penetrates through the center of the fine adjustment large gear and stretches into the inner cavity of the fine adjustment screw sleeve, and the outer wall of the fixed screw sleeve is in threaded connection with the inner wall of the fine adjustment screw sleeve;
One end of the locking bolt sequentially penetrates through the locking large gear, the upper table top, the fine adjustment screw sleeve and the fixing screw sleeve from top to bottom and is in threaded connection with the locking nut; the locking bolt is fixedly connected with the locking large gear, and gaps are reserved among the outer wall of the locking bolt, the upper table top, the fine adjustment screw sleeve and the fixing screw sleeve;
The locking large gear is positioned on the upper surface of the upper table top, the locking small gear is meshed with the locking large gear, and an output shaft of the second motor is connected with the locking small gear.
The high-low pitch adjusting mechanism can be used for adjusting the high and low and the pitch, and when the pitch adjusting is needed, only part of the high and low pitch adjusting mechanism is needed to be adjusted. In consideration of the fact that the moment is large, the operation space is small, direct driving is difficult, and the invention is realized by adding the stepping motor.
Further, the first motor is fixed on the side wall of the lower table top through the L-shaped mounting plate, the first motor is positioned on the lower surface of the horizontal plate of the L-shaped mounting plate, and the fine adjustment pinion is fixed on the upper surface of the horizontal plate of the L-shaped mounting plate;
The second motor is fixed on the side wall of the upper table surface through the L-shaped mounting plate, the second motor is positioned on the upper surface of the horizontal plate of the L-shaped mounting plate, and the locking pinion is fixed on the lower surface of the horizontal plate of the L-shaped mounting plate.
Further, the height adjusting mechanism further comprises a large spherical gasket arranged on the lower surface of the upper table top and the upper surface of the fine adjustment screw sleeve, a small spherical gasket arranged between the locking nut and the fixed screw sleeve, a first speed reducer arranged between the first motor and the fine adjustment pinion and a second speed reducer arranged between the second motor and the locking pinion;
The locking bolt, the locking gearwheel, the trimming screw sleeve, the fixing screw sleeve and the trimming gearwheel are all coaxial.
Further, the yaw adjustment mechanism comprises a third motor, a fine adjustment screw rod, a nut and a yaw fine adjustment rod; the third motor is fixed on the side wall of the base, and the yaw fine adjustment rod is fixedly connected with the side wall of the lower table top;
The nut is fixedly connected with the yaw fine adjustment rod, the third motor drives the fine adjustment screw rod to drive the nut to move along the axial direction of the fine adjustment screw rod, and the nut drives the yaw fine adjustment rod to rotate.
Further, the yaw locking mechanism comprises a fourth motor, a yaw locking pinion, a yaw locking gearwheel and a yaw locking bolt; the side wall of the lower table top is fixed to the fourth motor, the yaw locking large gear is fixed to the upper surface of the lower table top, an output shaft of the fourth motor is connected with the yaw locking small gear, the yaw locking small gear is meshed with the yaw locking large gear, and the yaw locking bolt sequentially penetrates through the yaw locking large gear and the lower table top from top to bottom and then is in threaded connection with the base.
Yaw adjustment is achieved between the lower table top and the base through a yaw adjustment mechanism, and yaw locking is achieved through a yaw locking mechanism. The screw rod nut is driven by a stepping motor, and the fine adjustment rod is pushed to rotate by means of the forward and backward movement of the nut, so that the table top is driven to rotate, and the table top is lubricated and protected by utilizing a vacuum lubricant.
Further, the base is closely attached to the lower table top, and the device further comprises a deflection rotation shaft penetrating into the base and the lower table top, and the base and the lower table top can rotate around the deflection rotation shaft.
Further, the upper table top, the lower table top and the base are all made of cast iron materials.
The upper table top and the lower table top are made of cast iron.
Compared with the prior art, the invention has the beneficial effects that:
1. the adjusting table is used in a wind tunnel environment, can work in vacuum at + -2 kpa, and at-10 ℃ to 50 ℃ in normal operation, has large bearing capacity (more than 5T), meets five-degree-of-freedom adjustment, and completes the combination of pitching yaw electric adjustment and high-rigidity locking. The system can ensure the position precision and stability of the adjusting platform under the working conditions of vibration and wind tunnel airflow impact;
2. the adjusting table has no mechanisms such as bearing guide rails and the like, and the table tops are in direct surface-to-surface contact, so that the bearing capacity is high, and the optical load of several tons can be precisely adjusted;
3. The pitch and yaw adjusting mechanisms are driven by the motor to rotate and finally locked by the nuts, so that the locking rigidity is high, and the yaw and pitch adjusting mechanism is used under vibration or impact and has high stability;
4. The elevation pitch and yaw adjusting mechanism and the corresponding locking mechanism are electrically controlled and can be used under airtight or severe conditions;
5. The high-low pitching adjusting mechanism adopts a multi-stage gear reduction device, improves the moment and has higher adjusting precision.
Drawings
FIG. 1 is a schematic view of a conditioning table assembly;
In the figure: 1-upper table top, 2-translation regulating mechanism, 4-high-low pitch regulating mechanism, 5-lower table top, 6-base, 7-yaw regulating mechanism and 8-yaw locking mechanism;
FIG. 2 is a schematic diagram of a translational fine adjustment mechanism;
In the figure: 9-turntable load, 10-first mounting plates, 11-fine adjustment screws, 12-second mounting plates, 13-guide rods and 14-end covers;
FIG. 3 is a schematic illustration of a pitch adjustment mechanism;
In the figure: 40-first speed reducer, 41-fine tuning pinion, 42-fine tuning gear wheel, 43-fixed screw sleeve, 44-fine tuning screw sleeve, 45-locking bolt, 46-locking nut, 47-locking gear wheel, 48-locking pinion, 49-second speed reducer, 50-large spherical gasket, 51-small spherical gasket and 413-L-shaped mounting plate.
FIG. 4 is a schematic diagram of a yaw adjustment mechanism;
In the figure: 70-third motor, 71-fine tuning screw, 72-nut, 73-yaw fine tuning rod, 74-angular contact ball bearing, 75-motor mounting seat, 81-fourth motor, 82-yaw locking pinion, 83-yaw locking gearwheel, 84-yaw locking bolt.
FIG. 5 is a schematic view of the mating of the base with the lower table;
in the figure: 76 yaw pivot
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific examples.
As can be seen from fig. 1, the adjusting table of the present embodiment mainly includes three tables, an upper table 1, a lower table 5, and a base 6, which are sequentially arranged from top to bottom, and further includes a translation adjusting mechanism 1, a pitch adjusting mechanism 4, and a yaw adjusting mechanism 7, which are disposed on the three tables. Three high-low pitching adjusting mechanisms 4 are uniformly distributed between the upper table top 1 and the lower table top 5, the lower table top is in direct surface-to-surface contact and compaction with the base, the translation adjusting mechanism 1 is fixed on the side wall of the upper table top, the yaw adjusting mechanism 7 is partially fixed on the side wall of the base, and the yaw adjusting mechanism 7 is partially fixed on the side wall of the lower table top 5. The translation of the turntable load is realized by adjusting the translation adjusting mechanism 2, the height adjustment of the turntable load is realized by simultaneously adjusting the three height pitching adjusting mechanisms 4, the pitching adjustment of the turntable load is realized by one or two height pitching adjusting mechanisms 4, and the yaw adjustment of the turntable load is realized by the yaw adjusting mechanism 7. The adjusting table of the embodiment further comprises a yaw locking mechanism 8 which is fixed on the lower table top and the base and is used for realizing yaw locking.
As can be seen from fig. 2, the translational adjustment mechanism 1 of the present embodiment includes a fine adjustment assembly and a guiding and limiting assembly; the fine adjustment assembly comprises a first mounting plate 10, a fine adjustment screw 11 and an end cover 14; in this embodiment, the trimming screw 11 is an M20 trimming screw, the first mounting plate 10 is fixed on the side wall of the upper table top 1 by a screw, a through hole is formed in a portion, higher than the upper table top, of the first mounting plate 10, the trimming screw 11 passes through the through hole and is in threaded connection with the load 9 of the adjusting table, the end cover 14 is fastened on the head of the trimming screw 11 and is fixed on the first mounting plate 10 by the screw, the trimming screw 11 is limited to move along the axial direction of the trimming screw, and a through hole with a pore diameter smaller than the outer diameter of the head of the trimming screw is formed in the center of the end cover 14, so that the trimming screw is convenient to adjust and rotate. The guide limiting assembly comprises a second mounting plate 12 and a guide rod 13; the second mounting plate 12 is fixed on the side wall of the upper table top 1 through screws, the first mounting plate 10 and the second mounting plate 12 are symmetrically arranged about the symmetry axis of the adjusting table, the guide rod 13 comprises a fixing plate 131 and a guide rod portion 132 which is integrally arranged with the fixing plate 131 and is positioned in the center of the fixing plate 131, the fixing plate 131 is fixed on the first mounting plate 12 through screws, the guide rod portion 132 penetrates through the first mounting plate 12 to be inserted into a guide hole of the load 9 of the adjusting table, and the guide rod 13 is coaxial with the fine adjusting screw 11.
The adjusting table load 9 can be driven to move by rotating the fine adjustment screw 11, so that the integral horizontal displacement adjustment of the upper table top 1 and the adjusting table load 9 arranged on the upper table top is realized. The guide mechanism is in clearance fit with the guide hole of the adjusting table load 9 by utilizing the guide rod 13, so that the yaw angle is not changed in the translation process.
As can be seen from fig. 3, the pitch adjusting mechanism 4 of the present embodiment includes a first motor, a first speed reducer 40, a fine adjustment pinion 41, a fine adjustment large gear 42, a fixing screw sleeve 43, a fine adjustment screw sleeve 44, a locking bolt 45, a locking nut 46, a locking large gear 47, a locking pinion 48, a second speed reducer 49, and a second motor; the first decelerator 40 is a 130HJ planetary decelerator, and the second decelerator 49 is an AB142-030 decelerator.
The first motor is fixed on the side wall of the lower table top 5 through an L-shaped mounting plate 413, the first motor is positioned on the lower surface of a horizontal plane plate of the L-shaped mounting plate 413, and the fine adjustment pinion 41 is fixed on the upper surface of the horizontal plane plate of the L-shaped mounting plate 413; the second motor is fixed on the side wall of the upper table top 1 through an L-shaped mounting plate 413, the second motor is positioned on the upper surface of the horizontal plane plate of the L-shaped mounting plate 413, and a locking pinion 48 is fixed on the lower surface of the horizontal plane plate of the L-shaped mounting plate 413. The lock nut 46 is positioned in the inner cavity of the fixed screw sleeve 43; and the outer wall of the lock nut 46 abuts against the inner wall of the fixing screw sleeve 43; in this embodiment, the lock nut is a hexagonal nut, and the hexagonal nut cannot rotate in the fixing screw sleeve; the output shaft of the first motor is connected with a first speed reducer 40, the first speed reducer is connected with a fine adjustment pinion 41, and the fine adjustment pinion 41 is meshed with a fine adjustment large gear 42; the fine tuning screw sleeve 44 is fixed on the upper surface of the fine tuning gear 42, and the top of the fine tuning screw sleeve is contacted with the lower surface of the upper table top 1; the fixed screw sleeve 43 is fixed on the upper surface of the lower table top 5, the top of the fixed screw sleeve passes through the center of the fine adjustment large gear 42 and stretches into the inner cavity of the fine adjustment screw sleeve 44, and the outer wall of the fixed screw sleeve 43 is in threaded connection with the inner wall of the fine adjustment screw sleeve 44; one end of a locking bolt 45 sequentially passes through a locking large gear 47, an upper table top 1, a fine adjustment screw sleeve 44 and a fixing screw sleeve 43 from top to bottom and is in threaded connection with a locking nut 46; the locking bolt 45 is fixedly connected with the locking large gear 47, and gaps are reserved between the outer wall of the locking bolt 45 and the upper table top 1, the fine tuning screw sleeve 44 and the fixing screw sleeve 43; the locking large gear 47 is positioned on the upper surface of the upper table top 1, the locking small gear 48 is meshed with the locking large gear 47, the output shaft of the second motor is connected with the second speed reducer, and the second speed reducer is connected with the locking small gear 48. A large spherical gasket 50 is further arranged between the lower surface of the upper table top 1 and the upper surface of the fine adjustment screw sleeve 44, and a small spherical gasket 51 is arranged between the locking nut 46 and the fixing screw sleeve 43, so that the three adjustment mechanisms are not interfered with each other during adjustment.
When the height adjustment is needed, three height pitching adjustment mechanisms are started simultaneously, the first motor drives the fine adjustment pinion to rotate, the fine adjustment pinion drives the fine adjustment gear to rotate, the fine adjustment screw sleeve moves up and down along the outer wall of the fixed screw sleeve while rotating along with the fine adjustment gear, and the height adjustment of the upper table top 1 is achieved, namely the height adjustment of the load of the adjustment table is completed. After the locking device is adjusted to the designated height, the second motor is started to complete locking, the specific second motor drives the locking pinion to rotate, the locking pinion drives the locking gear to rotate, the locking bolt follows the locking gear to rotate, and the locking nut at the end part of the locking bolt moves upwards along the axial direction of the locking bolt along with the rotation of the locking bolt, so that locking is finally achieved.
When the pitching adjustment is needed, only one of the high-low pitching adjustment mechanisms is started.
As can be seen from fig. 4, the yaw adjustment mechanism 7 of the present embodiment includes a third motor 70, a fine adjustment screw 71, a nut 72, and a yaw fine adjustment lever 73; in the embodiment, the nut is a square nut, the third motor 70 is fixed on the side wall of the base 6 through a motor mounting seat 75, and the yaw fine adjustment rod 73 is fixedly connected with the side wall of the lower table top 5 through a screw; the nut 72 is fixedly connected with the yaw fine adjustment rod 73, and as can be seen from the figure, the other end face of the nut 72 is fixed with the yaw fine adjustment rod 73, namely, the nut 72 can not rotate and can only move along the axial direction of the fine adjustment screw 71, the third motor 70 drives the fine adjustment screw 71 to drive the nut 72 to move along the axial direction of the fine adjustment screw 71, and the nut 72 drives the yaw fine adjustment rod 73 to rotate. As can be seen from fig. 5, a yaw pivot axis 76 is provided between the bedplate 6 and the lower table top 5.
As can be seen from fig. 1, the adjusting table of the present embodiment further includes 3 yaw locking mechanisms 8, which have a similar principle to the locking mechanism of the height, including a fourth motor 81, a yaw locking pinion 82, a yaw locking gearwheel 83 and a yaw locking bolt 84; the side wall of the lower table top 5 is fixed to a fourth motor 81, a yaw locking large gear 83 is fixed to the upper surface of the lower table top 5, a yaw locking bolt 84 is fixedly connected with the yaw locking large gear 83, an output shaft of the fourth motor 81 is connected with a yaw locking small gear 82, the yaw locking small gear 82 is meshed with the yaw locking large gear 83, and the yaw locking bolt 84 sequentially penetrates through the yaw locking large gear 83 and the lower table top 5 from top to bottom and then is in threaded connection with the base 6. After the yaw adjustment is completed, a fourth motor is started to drive the yaw locking pinion 82 and the yaw locking gear 83 to rotate, and the yaw locking bolt 84 is directly connected with the base through threads to realize locking.
Claims (5)
1. The utility model provides a multi freedom high strength high accuracy adjustment platform suitable for use under wind tunnel environment which characterized in that: comprises a base (6), a lower table top (5) and an upper table top (1) which are arranged in a laminated way from bottom to top; the device also comprises a translation adjusting mechanism (2), a yaw adjusting mechanism (7) and at least two groups of high-low pitching adjusting mechanisms (4) which are uniformly distributed;
the upper table top (1) is used for fixing and adjusting a table load (9);
The translation adjusting mechanism (2) is fixed on the upper table top, and the horizontal adjustment of the load (9) of the adjusting table is realized by adjusting the translation adjusting mechanism (2);
the yaw adjusting mechanism (7) is fixed on the base (6), and yaw adjustment of the load (9) of the adjusting table is achieved by adjusting the yaw adjusting mechanism (7);
the height and pitch adjusting mechanism (4) is fixed between the lower table top (5) and the upper table top (1), and the height and pitch adjustment of the load (9) of the adjusting table are realized by adjusting the height and pitch adjusting mechanism (4);
the translation adjusting mechanism (2) comprises a fine adjustment assembly and a guide limiting assembly; the fine adjustment component and the guide limiting component are fixedly arranged on two opposite side walls of the upper table top (1);
The fine adjustment assembly comprises a first mounting plate (10), a fine adjustment screw (11) and an end cover (14); the first mounting plate (10) is fixed on the side wall of the upper table top (1), the fine adjustment screw (11) passes through the first mounting plate (10) to be in threaded connection with the load (9) of the adjusting table, the end cover (14) is buckled on the head of the fine adjustment screw (11) and is fixed on the first mounting plate (10) for limiting the fine adjustment screw (11) to move along the axial direction of the first mounting plate, and a through hole with the aperture smaller than the outer diameter of the head of the fine adjustment screw is formed in the center of the end cover (14);
the guide limiting assembly comprises a second mounting plate (12) and a guide rod (13); the second mounting plate (12) is fixed on the side wall opposite to the upper table top (1) with the first mounting plate (10), the guide rod (13) is fixed on the second mounting plate (12) and penetrates through the second mounting plate (12) to be inserted into a guide hole of the adjusting table load (9), and the guide rod (13) is coaxial with the fine adjustment screw (11);
The high-low pitching adjusting mechanism (4) comprises a first motor (40), a fine adjustment pinion (41), a fine adjustment gearwheel (42), a fixed screw sleeve (43), a fine adjustment screw sleeve (44), a locking bolt (45), a locking nut (46), a locking gearwheel (47), a locking pinion (48) and a second motor (49); the locking nut (46) is positioned in the inner cavity of the fixed screw sleeve (43); the outer wall of the lock nut (46) is tightly abutted against the inner wall of the fixed screw sleeve (43); the fixed screw sleeve (43) limits the locking nut (46) to rotate;
An output shaft of the first motor (40) is connected with a fine adjustment pinion (41), and the fine adjustment pinion (41) is meshed with a fine adjustment large gear (42);
The fine adjustment screw sleeve (44) is fixed on the upper surface of the fine adjustment large gear (42), and the top of the fine adjustment screw sleeve is contacted with the lower surface of the upper table top (1);
The fixed screw sleeve (43) is fixed on the upper surface of the lower table top (5), the top of the fixed screw sleeve passes through the center of the fine adjustment large gear (42) and stretches into the inner cavity of the fine adjustment screw sleeve (44), and the outer wall of the fixed screw sleeve (43) is in threaded connection with the inner wall of the fine adjustment screw sleeve (44);
one end of the locking bolt (45) sequentially penetrates through the locking large gear (47), the upper table top (1), the fine adjustment screw sleeve (44) and the fixing screw sleeve (43) from top to bottom and then is in threaded connection with the locking nut (46); the locking bolt (45) is fixedly connected with the locking large gear (47), and a gap is reserved between the outer wall of the locking bolt (45) and the upper table top (1), the fine adjustment screw sleeve (44) and the fixing screw sleeve (43);
The locking large gear (47) is positioned on the upper surface of the upper table top (1), the locking small gear (48) is meshed with the locking large gear (47), and an output shaft of the second motor (49) is connected with the locking small gear (48);
The first motor (40) is fixed on the side wall of the lower table top (5) through an L-shaped mounting plate (413), the first motor (40) is positioned on the lower surface of a horizontal plane plate of the L-shaped mounting plate (413), and the fine adjustment pinion (41) is fixed on the upper surface of the horizontal plane plate of the L-shaped mounting plate (413);
The second motor (49) is fixed on the side wall of the upper table top (1) through an L-shaped mounting plate (413), the second motor is positioned on the upper surface of the horizontal plane plate of the L-shaped mounting plate (413), and the locking pinion (48) is fixed on the lower surface of the horizontal plane plate of the L-shaped mounting plate (413);
The yaw adjustment mechanism (7) comprises a third motor (70), a fine adjustment screw (71), a nut (72) and a yaw fine adjustment rod (73); the third motor (70) is fixed on the side wall of the base (6), and the yaw fine adjustment rod (73) is fixedly connected with the side wall of the lower table top (5);
the nut (72) is fixedly connected with the yaw fine adjustment rod (73), the third motor (70) drives the fine adjustment screw rod (71) to drive the nut (72) to move along the axial direction of the fine adjustment screw rod (71), and the nut (72) drives the yaw fine adjustment rod (73) to rotate.
2. The multi-degree-of-freedom high-strength high-precision adjusting table suitable for use in wind tunnel environment according to claim 1, wherein: the high-low pitching adjusting mechanism further comprises a large spherical gasket (50) arranged on the lower surface of the upper table top (1) and the upper surface of the fine tuning screw sleeve (44), a small spherical gasket (51) arranged between the locking nut (46) and the fixed screw sleeve (43), a first speed reducer arranged between the first motor and the fine tuning pinion and a second speed reducer arranged between the second motor and the locking pinion;
The locking bolt (45), the locking large gear (47), the fine adjustment screw sleeve (44), the fixing screw sleeve (43) and the fine adjustment large gear (42) are coaxial.
3. The multi-degree-of-freedom high-strength high-precision adjusting table suitable for use in wind tunnel environment according to claim 2, wherein: the yaw locking mechanism (8) comprises a fourth motor (81), a yaw locking pinion (82), a yaw locking large gear (83) and a yaw locking bolt (84); the side wall at mesa (5) down is fixed in fourth motor (81), yaw locking gear (83) are fixed at the upper surface of mesa (5) down, the output shaft and the yaw locking pinion (82) of fourth motor (81) are connected, yaw locking pinion (82) and yaw locking gear (83) meshing, yaw locking bolt (84) pass yaw locking gear (83), lower mesa (5) back and base (6) threaded connection from last to lower in proper order.
4. The multi-degree-of-freedom high-strength high-precision adjusting table for use in wind tunnel environment according to claim 3, wherein: the base (6) is tightly attached to the lower table top (5), and the device further comprises a deflection rotating shaft (76) penetrating into the base (6) and the lower table top (5), wherein the base (6) and the lower table top (5) can rotate around the deflection rotating shaft (76) relatively.
5. The multi-degree-of-freedom high-strength high-precision adjusting table suitable for use in wind tunnel environment according to claim 1, wherein: the upper table top (1), the lower table top (5) and the base (6) are all made of cast iron materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113983308B (en) * | 2021-12-27 | 2022-04-01 | 中国工程物理研究院应用电子学研究所 | Multi-degree-of-freedom adjustable optical vibration reduction platform |
| CN114486167B (en) * | 2022-04-18 | 2022-06-24 | 中国空气动力研究与发展中心低速空气动力研究所 | Follow-up sealing system and method for floor notch of low-speed wind tunnel model tail support ground effect test |
| CN115597820B (en) * | 2022-12-15 | 2023-03-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Yaw mechanism of large hypersonic-velocity high-temperature wind tunnel model feeding system |
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| CN103792636A (en) * | 2013-12-27 | 2014-05-14 | 中国科学院西安光学精密机械研究所 | Optical lens aligning device |
| CN106644389A (en) * | 2015-11-04 | 2017-05-10 | 北京卫星环境工程研究所 | High precision five-freedom degree position and pose adjusting mechanism used for space environment test |
| CN107870405A (en) * | 2017-12-05 | 2018-04-03 | 中国科学院苏州生物医学工程技术研究所 | Multi-degree-of-freedom optical precision adjustment stage |
| CN210514751U (en) * | 2019-05-15 | 2020-05-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | Multi-degree-of-freedom high-strength high-precision adjusting table suitable for being used in wind tunnel environment |
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| US9500836B2 (en) * | 2014-07-21 | 2016-11-22 | Raytheon Company | Precision optical mount for optical devices |
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| CN103792636A (en) * | 2013-12-27 | 2014-05-14 | 中国科学院西安光学精密机械研究所 | Optical lens aligning device |
| CN106644389A (en) * | 2015-11-04 | 2017-05-10 | 北京卫星环境工程研究所 | High precision five-freedom degree position and pose adjusting mechanism used for space environment test |
| CN107870405A (en) * | 2017-12-05 | 2018-04-03 | 中国科学院苏州生物医学工程技术研究所 | Multi-degree-of-freedom optical precision adjustment stage |
| CN210514751U (en) * | 2019-05-15 | 2020-05-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | Multi-degree-of-freedom high-strength high-precision adjusting table suitable for being used in wind tunnel environment |
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