CN116046329A - Large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism - Google Patents
Large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism Download PDFInfo
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- CN116046329A CN116046329A CN202310167572.8A CN202310167572A CN116046329A CN 116046329 A CN116046329 A CN 116046329A CN 202310167572 A CN202310167572 A CN 202310167572A CN 116046329 A CN116046329 A CN 116046329A
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- 208000006011 Stroke Diseases 0.000 claims 9
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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- 229910000831 Steel Inorganic materials 0.000 description 1
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- 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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- 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
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Abstract
The invention discloses a large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism, which comprises an operation platform substrate, a supporting box, two groups of stroke components and a diffuser inlet section component, wherein the operation platform substrate is arranged on the operation platform substrate; the operation platform base plate is supported and installed on the bottom plate of the test section test cabin through the support column, one side of a diffuser installation hole of the test section test cabin is supported on the operation platform base plate, a travel assembly used for driving the diffuser inlet section to open and close is installed, the diffuser inlet section assembly comprises two half diffuser inlet sections and two supports for supporting the half diffuser inlet sections, each half diffuser inlet section is installed on the respective travel assembly through the respective support, and the diffuser inlet section is opened and closed through horizontal reciprocating motion of the direction perpendicular to the axis of the diffuser inlet section under the driving of the travel assembly. The invention can realize the automatic opening and closing of the inlet section of the large-scale wind tunnel diffuser, and is convenient for placing a test model.
Description
Technical Field
The invention belongs to the field of hypersonic wind tunnel test equipment, and particularly relates to an opening and closing mechanism of an inlet section of a large diffuser in a large wind tunnel.
Background
The hypersonic wind tunnel is important ground equipment for supporting development of hypersonic aircrafts, and the diffuser is an important component part of the hypersonic wind tunnel and is used for decelerating and pressurizing supersonic airflow at the upstream of the wind tunnel, so that the influence of backpressure rise at the downstream of the wind tunnel on a wind tunnel flow field is relieved, and the test time is prolonged. The diffuser is connected with the test section of the large hypersonic wind tunnel, and the inlet section of the diffuser is positioned in the test cabin. The large wind tunnel test model is large in size, if the diffuser inlet section can be designed to be in an openable mode, the lifting and placing of the oversized test model in the test section can be met through the opening and closing operation of the diffuser inlet section, and enough test space is reserved for the test model. And the structure and the function design of the opening and closing mechanism of the large wind tunnel inlet section are more highly required. Because the wind tunnel needs to run for a long time under the condition of high temperature and vacuum and the axial impact force is more than 200 tons, the opening and closing mechanism needs to have higher load capacity, and meanwhile, the stability of a large mechanical structure in the opening and closing process and the stable connection between the opening and closing mechanism and other parts are ensured.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the opening and closing mechanism for the inlet section of the large-scale hypersonic high-temperature wind tunnel diffuser, which realizes the automatic opening and closing of the inlet section of the large-scale wind tunnel diffuser, facilitates the placement of a test model, improves the loading capacity and ensures the stability of the opening and closing operation process.
The invention provides a large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism, which is positioned in a test chamber of a test section and comprises an operation platform substrate, a supporting box, two pairs of stroke components and a diffuser inlet section component;
the operation platform substrate is fixedly arranged on a bottom plate of the test section test cabin through a support column support, two pairs of stroke components for driving the opening and closing of the diffuser inlet section are arranged on one side of the operation platform substrate, which is close to the diffuser mounting hole in the test cabin, and the two pairs of stroke components are respectively arranged on two sides of the diffuser mounting hole; the diffuser inlet section assembly comprises two half diffuser inlet sections and two supports for supporting the half diffuser inlet sections, the two half diffuser inlet sections are symmetrical to each other according to the vertical plane passing through the axes of the diffuser inlet sections (namely the coaxial axes of the spray pipe mounting hole and the diffuser mounting hole of the test cabin), each half diffuser inlet section is respectively arranged on a respective stroke assembly through a respective support, and horizontally reciprocates along the direction perpendicular to the axes of the diffuser inlet sections through the driving of the stroke assembly, so that the folding and the separation of the two half diffuser inlet sections are realized, and the opening and the closing of the diffuser inlet sections are realized; the supporting box 1 is located below the base plate of the operating platform and corresponds to the position of the stroke assembly on the operating platform so as to support the stroke assembly and the load of the inlet section of the diffuser.
Further, each pair of stroke components comprises a stroke bed, two long sliding rails, a plurality of sliding blocks, a screw rod component, a motor, a first sliding installation panel, two short sliding rails and a second sliding installation panel;
the travel beds of the two pairs of travel assemblies are symmetrically arranged on the base plate of the operation platform along the axial direction perpendicular to the inlet section of the diffuser and are symmetrically distributed on two sides of the diffuser mounting hole of the test cabin; the two long sliding rails are arranged on the travel bed side by side and are arranged in the axial direction perpendicular to the inlet section of the diffuser in the advancing direction; a plurality of sliding blocks with the same number are arranged on each long sliding rail; the first sliding installation panel covers and is fixed on all sliding blocks on the two long sliding rails; the two short slide rails are arranged on the first sliding installation surface along the direction parallel to the axis of the inlet section of the diffuser, and a plurality of sliding blocks with the same number are arranged on the two short slide rails; the second sliding installation surface covers and is fixed on all sliding blocks on the two short sliding rails, and a support of the diffuser inlet section is arranged on the second sliding installation surface;
the screw in the screw assembly is installed on the stroke bed and the direction is parallel with two long slide rails, motor and screw drive installation, screw nut pass through trapezoidal screw hole and the outer trapezoidal threaded connection of screw and constitute drive screw pair, screw nut passes through terminal surface flange and screw seat fixed connection, first slip mounting panel and screw seat top fixed connection, motor drive screw rotates, make screw nut rectilinear reciprocation, thereby drive first slip mounting panel and slider along long slide rail slip, make two half diffuser entry sections rectilinear reciprocation, realize the opening and shutting of diffuser entry section.
In the technical scheme of the invention, the lengths of the stroke beds, the lead screws and the long slide rails of the two pairs of stroke assemblies can be the same or different, and are actually determined according to the open hole positions of the diffuser inlet section mounting holes in the wind tunnel test cabin and the spatial arrangement condition in the test cabin.
Because the sliding rail is easy to be heated and elongated under the high-temperature condition, an expansion joint is reserved between the sliding rails, and the requirement of the sliding rail on axial thermal deformation can be met, so that the thermal stress is released to complete the opening and closing movement. The design of adopting the straight line double slide rail design, the design of selecting a plurality of heavy-duty sliding blocks on the single slide rail can satisfy the whole load requirement, improves the life of sliding blocks. The design of two short slide rails and corresponding slider, when two half diffuser entry sections of mutual symmetry are debugged in the installation, through vertically fine setting support position along short slide rail, half diffuser entry section alignment of being convenient for corresponds the mounting hole, improves the mounted position precision.
Further, the lead screw subassembly includes speed reducer, shaft coupling, two pair of bearing assemblies, lead screw, screw nut, screw seat, the speed reducer is connected with motor drive, the shaft coupling is connected with the speed reducer transmission, the lead screw passes through two pair of bearing assemblies to be installed and fixes on the stroke bed, and one of them pair of bearing assemblies is connected with the shaft coupling transmission, the lead screw passes through bearing assemblies and is connected with the shaft coupling, the screw seat is fixed on screw nut, and first slidable mounting panel is installed on the screw seat.
Further, the bearing assembly in transmission connection with the coupler comprises two spacers, a round nut, annular sealing teeth, two bearings, a bearing seat end cover and a bearing end cover, the screw rod is in transmission connection with the coupler through a flat key, the spacer, the round nut, the spacer, the two bearings and the spacer are sequentially arranged on one side of the screw rod, which is connected with the coupler, the spacer, the round nut, the annular sealing teeth, the two bearings, the bearing seat and the coupler are positioned in the bearing seat, two ends of the bearing seat are sealed through the bearing seat end cover, and the round nut, the spacer, the two bearings and the spacer are connected with the bearing seat through the bearing end cover to be sealed so as to be separated from the coupler.
Further, the installation and arrangement positions of the sliding blocks below the first sliding installation panel and the second sliding installation panel are symmetrical in pairs according to the corresponding sliding rails, and the sliding block intervals on the same sliding rail are equal.
Further, the support comprises the installation base that is connected with second slidable mounting panel and the support that supports half diffuser entry section, the support has the cambered surface that matches with half diffuser support position's radian, and the middle part position of support is the fretwork design for place the balancing weight, be used for adjusting focus and balance. The balancing weight can be made of iron blocks with required weight. The design can prevent the diffuser inlet section from overturning due to the change of the mass center in the opening and closing process, and meanwhile, the controllable counterweight can prevent excessive weight from increasing the service lives of the sliding block, the guide rail and the related parts of the screw motor.
Further, two ends of the two long slide rails are provided with limiting blocks, sliding blocks at the foremost end and the rearmost end of the travel are provided with travel switches for controlling the starting and stopping of the motor, the travel switches are in signal connection with a motor control system, the motor is electrically connected with the motor control system, and when the sliding blocks travel to the limiting block positions, the travel switches touch the limiting blocks and can be powered off through the control system, so that the motor stops rotating; the long sliding rail is provided with a threaded hole and a bolt, wherein the threaded hole and the bolt are used for limiting and locking the position of the sliding block to avoid re-movement, and the sliding block is locked to be limited through the bolt after the two half diffuser inlet sections are connected.
Further, the supporting box is a three-dimensional net box structure formed by staggering transverse and longitudinal supporting plate bones and muscles, and the three-dimensional net box structure is beneficial to improving structural rigidity and strength, improving bearing capacity, reducing overall weight and playing a certain role in damping. Preferably, the supporting box is of steel skeleton design.
Further, the length of the support box along the travel direction of the travel assembly is uniform to ensure the load capacity over the entire travel.
Further, the shape of the inner cavity of the sliding block is matched with that of the sliding rail, and the sliding block is nested on the sliding rail.
Furthermore, the support columns of the operation platform substrate are of an I-shaped design, so that the load capacity is improved.
Further, 3-4 sliding blocks are arranged on each long sliding rail, and 1-2 sliding blocks are arranged on each short sliding rail.
Compared with the prior art, the invention has the following beneficial effects:
the opening and closing mechanism can realize automatic opening and closing of the inlet section of the diffuser, is convenient for placement of a test model, is axially provided with the short sliding rail, and is convenient for aligning the inlet section of the half diffuser by longitudinally fine-adjusting the position of the support along the short sliding rail when the inlet section of the two half diffusers which are mutually symmetrical are installed and debugged. Meanwhile, the design of the supporting box ensures the load capacity, reduces vibration and improves the advancing stability of the opening and closing process. The design of multiunit slider and two slide rails can alleviate slide rail load and improve life, and the design of joining in marriage a plurality of sliders on the single slide rail can reduce the area of contact of slider and slide rail, improves the life of slider. The design of control systems such as a travel switch and the like enables the operation of the opening and closing mechanism to be automatic, reduces the workload of operators and improves the working efficiency. Therefore, the opening and closing mechanism disclosed by the invention can adapt to high-temperature vacuum and vibration environments in a large-scale ultra-high sound velocity high-temperature wind tunnel test cabin, is convenient for placing and operating a model, and avoids influencing the test process.
Drawings
FIG. 1 is a front view of an opening and closing mechanism of an inlet section of a large hypersonic high temperature wind tunnel diffuser of the opening and closing mechanism of the present invention;
FIG. 2 is a cross-sectional view B-B of FIG. 1;
FIG. 3 is a schematic view of the travel assembly in a substantially installed position of the operating platform;
FIG. 4 is an enlarged view of a portion of the lead screw assembly;
fig. 5 is an enlarged view of the bearing assembly (within the circle in fig. 4).
In the figure, a 1-operation platform base plate, a 1-1-support column, a 2-support box, a 3-stroke component, a 3-1-stroke bed, a 3-2-long slide rail, a 3-3-slide block, a 3-4-motor, a 3-5-first sliding mounting panel, a 3-6-short slide rail, a 3-7-second sliding mounting panel, a 3-8-screw, a 3-9-speed reducer, a 3-10-coupling, a 3-11-spacer, a 3-12-round nut, a 3-13-round seal tooth, a 3-14-bearing, a 3-15-bearing seat, a 3-16-bearing seat end cover, a 3-17-bearing end cover, a screw nut 3-18, a 4-1-half diffuser inlet section, a 4-2-support and a 5-test cabin.
Detailed Description
The invention is further illustrated by the following examples. It is to be noted that the following examples are given solely for the purpose of illustration and are not to be construed as limitations on the scope of the invention, since numerous insubstantial modifications and variations of the invention will become apparent to those skilled in the art in light of the above disclosure, and yet remain within the scope of the invention.
Example 1
The structure of the opening and closing mechanism of the inlet section of the large-scale hypersonic high-temperature wind tunnel diffuser is shown in figures 1-3, and the opening and closing mechanism is positioned in a test cabin of a wind tunnel test section and comprises an operation 1, a supporting box 2, two pairs of stroke components 3 and a diffuser inlet section component;
the operation platform substrate 1 is fixedly installed on a bottom plate of a test cabin of the test section through a support column 1-1, one side, close to a diffuser installation hole in the test cabin, of the operation platform substrate is provided with a stroke component for driving an inlet section of the diffuser to open and close, and the two pairs of stroke components are respectively arranged on two sides of the diffuser installation hole; the diffuser inlet section assembly comprises two half diffuser inlet sections 4-1 and two supports 4-2 for supporting the half diffuser inlet sections, the two half diffuser inlet sections are symmetrical to each other according to the vertical plane structure of the axis of the diffuser inlet section, each half diffuser inlet section is respectively arranged on a respective stroke assembly through the respective support 4-2, and horizontally reciprocates along the direction perpendicular to the axis of the diffuser inlet section through the driving of the stroke assembly, so that the opening and closing of the diffuser inlet section are realized; the supporting box 2 is located below the base plate 1 of the operating platform and corresponds to the position of the stroke assembly on the operating platform so as to support the stroke assembly and the load of the inlet section of the diffuser.
Example 2
This example was based on example 1, and the following embodiments were further adopted:
each pair of stroke components comprises a stroke bed 3-1, two long sliding rails 3-2, a plurality of sliding blocks 3-3, a screw rod component, a motor 3-4, a first sliding installation panel 3-5, two short sliding rails 3-6 and a second sliding installation panel 3-7;
the travel bed is symmetrically arranged on the base plate of the operation platform along the axial direction perpendicular to the inlet section of the diffuser and symmetrically distributed on two sides of the diffuser mounting hole of the test cabin; the two long sliding rails are arranged on the travel bed side by side and are arranged in the axial direction perpendicular to the inlet section of the diffuser in the advancing direction; a plurality of sliding blocks with the same number are arranged on each long sliding rail; the first sliding installation panel covers and is fixed on all sliding blocks on the two long sliding rails; the two short slide rails are arranged on the first sliding installation surface along the direction parallel to the axis of the inlet section of the diffuser, and a plurality of sliding blocks with the same number are arranged on the two short slide rails; the second sliding installation surface covers and is fixed on all sliding blocks on the two short sliding rails, and the support 4-2 of the diffuser inlet section is arranged on the second sliding installation surface;
the screw rod 3-8 in the screw rod assembly is arranged on the travelling bed and is parallel to the two long slide rails in the direction, the motor is arranged in a transmission manner with the screw rod, the screw rod nut 3-18 is connected with the screw rod through a trapezoid threaded hole and an external trapezoid thread to form a transmission thread pair, the screw rod nut is fixedly connected with the screw nut seat through an end face flange, the first sliding mounting panel is fixedly connected with the top of the screw nut seat, the screw rod is driven to rotate through the motor, the screw rod nut linearly reciprocates, the first sliding mounting panel and the sliding block thereof are driven to slide along the long slide rails, the two half diffuser inlet sections linearly reciprocate, and the opening and closing of the diffuser inlet sections are realized.
Example 3
This example was based on example 2, and the following embodiments were further adopted:
the screw rod assembly comprises a speed reducer 3-9, a shaft coupling 3-10, two bearing assemblies, a screw rod 3-8, a screw rod nut and a screw nut seat, wherein the speed reducer is in transmission connection with a motor 3-4, the shaft coupling is in transmission connection with the speed reducer, the screw rod is fixedly arranged on a stroke bed through the two bearing assemblies, one bearing assembly is in transmission connection with the shaft coupling, the screw rod is connected with the shaft coupling through the bearing assemblies, the screw nut seat is fixed on the screw rod nut, and a first sliding mounting panel 3-5 is arranged on the screw nut seat.
Example 4
This example was based on example 3, and the following embodiments were further adopted:
the bearing assembly in transmission connection with the coupler 3-10 comprises two spacers 3-11, a round nut 3-12, annular sealing teeth 3-13, two bearings 3-14, a bearing seat 3-15, a bearing seat end cover 3-16 and a bearing end cover 3-17, a screw rod is in transmission connection with the coupler through a flat key, the spacer, the round nut, the spacer, two bearings and the spacer are sequentially arranged on the screw rod from one side connected with the coupler, the spacer, the round nut, the annular sealing teeth, the two bearings, the bearing seat and the coupler are positioned in the bearing seat, two ends of the bearing seat are sealed through the bearing seat end covers, and the round nut, the spacer, the two bearings and the spacer are connected with the bearing seat through the bearing end cover so as to be separated from the coupler.
The installation and arrangement positions of the sliding blocks 3-3 below the first sliding installation surface 3-5 and the second sliding installation surface 3-7 are symmetrical in pairs according to the corresponding sliding rails, and the sliding blocks on the same sliding rail are equally arranged at intervals.
The support comprises a mounting base connected with the second sliding mounting panel 3-7 and a support bracket for supporting the inlet section of the half diffuser, the support bracket is provided with an arc surface matched with the radian of the supporting position of the half diffuser, and the middle part of the support bracket is in a hollowed-out design and is used for placing a balancing weight and adjusting the gravity center for balance. The balancing weight can be made of iron blocks with required weight. The design can prevent the diffuser inlet section from overturning due to the change of the mass center in the opening and closing process, and meanwhile, the controllable counterweight can avoid the increase of the burden of the sliding block, the guide rail and the screw motor due to excessive weight and improve the service life of related parts.
On the long slide rail 3-2, the both ends of two long slide rails are provided with the stopper, be provided with the travel switch that control motor opened and stopped on the slider of the foremost and the rearmost of stroke, travel switch is connected with motor control system, and when the slider march to the stopper position, travel switch touches the stopper and can pass through control system outage, makes the motor stop rotating. The long slide rail is provided with a threaded hole and a bolt for limiting and locking the position of the slide block corresponding to the position of the slide block in the closed state of the inlet section of the diffuser.
The supporting box 2 is a three-dimensional net box structure formed by interlacing transverse and longitudinal supporting plate bones and muscles; the length of the supporting box 2 along the travel direction of the travel assembly is consistent; the three-dimensional net cage structure is beneficial to improving the structural rigidity and strength, improving the bearing capacity, reducing the overall weight and playing a certain role in shock absorption. The support column of the operation platform substrate is of an I-shaped design, so that the load capacity is improved.
The shape of the inner cavity of the sliding block is matched with the shape of the sliding rail, and the sliding block is nested on the sliding rail; 3-4 sliding blocks are arranged on each long sliding rail, and 1-2 sliding blocks are arranged on each section of sliding rail.
Claims (10)
1. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism is characterized in that the opening and closing mechanism is positioned in a wind tunnel test section test cabin and comprises an operation platform substrate (1), a supporting box (2), two pairs of stroke components and a diffuser inlet section component;
the operation platform substrate (1) is fixedly arranged on a bottom plate of the test cabin of the test section through a support column (1-1), two pairs of stroke components for driving the opening and closing of the inlet section of the diffuser are arranged on one side of the operation platform substrate, which is close to the mounting hole of the diffuser in the test cabin, of the operation platform substrate, and the two pairs of stroke components are respectively arranged on two sides of the mounting hole of the diffuser; the diffuser inlet section assembly comprises two half diffuser inlet sections (4-1) and two supports (4-2) for supporting the half diffuser inlet sections, the two half diffuser inlet sections are symmetrical to each other according to the vertical plane structure of the axis of the diffuser inlet section, each half diffuser inlet section is respectively arranged on a respective stroke assembly through the respective support (4-2), and the diffuser inlet sections horizontally reciprocate along the direction perpendicular to the axis of the diffuser inlet section through the driving of the stroke assembly, so that the opening and closing of the diffuser inlet sections are realized; the supporting box (2) is positioned below the base plate (1) of the operation platform and corresponds to the position of the stroke assembly on the operation platform so as to support the stroke assembly and the load of the inlet section of the diffuser.
2. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 1, wherein each secondary stroke assembly comprises a stroke bed (3-1), two long sliding rails (3-2), a plurality of sliding blocks (3-3), a screw assembly, a motor (3-4), a first sliding mounting panel (3-5), two short sliding rails (3-6) and a second sliding mounting panel (3-7);
the travel bed is symmetrically arranged on the base plate of the operation platform along the axial direction perpendicular to the inlet section of the diffuser and symmetrically distributed on two sides of the diffuser mounting hole of the test cabin; the two long sliding rails are arranged on the travel bed side by side and are arranged in the axial direction perpendicular to the inlet section of the diffuser in the advancing direction; a plurality of sliding blocks with the same number are arranged on each long sliding rail; the first sliding installation panel covers and is fixed on all sliding blocks on the two long sliding rails; the two short slide rails are arranged on the first sliding installation surface along the direction parallel to the axis of the inlet section of the diffuser, and a plurality of sliding blocks with the same number are arranged on the two short slide rails; the second sliding installation surface covers and is fixed on all sliding blocks on the two short sliding rails, and a support (4-2) of the diffuser inlet section is arranged on the second sliding installation surface;
the screw rod (3-8) in the screw rod assembly is arranged on the travelling bed, the direction of the screw rod is parallel to the two long sliding rails, the motor is arranged in a transmission manner with the screw rod, the screw rod nut (3-18) is connected with the outer trapezoid threads of the screw rod through a trapezoid threaded hole to form a transmission thread pair, the screw rod nut is fixedly connected with the screw nut seat through an end face flange, the first sliding mounting panel is fixedly connected with the top of the screw nut seat, the screw rod is driven to rotate through the motor, so that the screw rod nut linearly reciprocates, and the first sliding mounting panel and the sliding block thereof are driven to slide along the long sliding rails, so that the two half diffuser inlet sections linearly reciprocate, and the opening and closing of the diffuser inlet sections are realized.
3. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 2 is characterized in that the screw rod assembly comprises a speed reducer (3-9), a shaft coupling (3-10), two pairs of bearing assemblies, a screw rod (3-8), a screw rod nut (3-18) and a screw nut seat, the speed reducer is in transmission connection with a motor (3-4), the shaft coupling is in transmission connection with the speed reducer, the screw rod is fixedly arranged on a travelling bed through the two pairs of bearing assemblies, one pair of bearing assemblies is in transmission connection with the shaft coupling, the screw rod is connected with the shaft coupling through the bearing assemblies, the screw nut seat is fixed on the screw rod nut, and the first sliding mounting panel (3-5) is arranged on the screw nut seat.
4. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 3, wherein the bearing assembly in transmission connection with the coupler (3-10) comprises two spacers (3-11), a round nut (3-12), annular sealing teeth (3-13), two bearings (3-14), a bearing seat (3-15), a bearing seat end cover (3-16) and a bearing end cover (3-17), a screw rod is in transmission connection with the coupler through a flat key, the spacer, the round nut, the spacer, two bearings and the spacer are sequentially arranged on the screw rod from the side connected with the coupler, the spacer, the round nut, the annular sealing teeth, the two bearings, the bearing seat and the coupler are positioned in the bearing seat, two ends of the bearing seat are closed through the bearing seat end covers, and the round nut, the spacer, the two bearings and the spacer are connected with the bearing seat through the bearing end covers so as to be separated from the coupler.
5. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 2 is characterized in that the installation and arrangement positions of the sliding blocks (3-3) below the first sliding installation panel (3-5) and the second sliding installation panel (3-7) are symmetrical in pairs according to the corresponding sliding rails, and the sliding block intervals on the same sliding rail are equal.
6. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 1, wherein the support is composed of a mounting base connected with a second sliding mounting panel (3-7) and a support bracket for supporting the half diffuser inlet section, the support bracket is provided with an arc surface matched with the radian of the half diffuser support position, and the middle position of the support bracket is in a hollowed-out design.
7. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 1 is characterized in that limiting blocks are arranged at two ends of a long sliding rail (3-2), travel switches for controlling a motor to stop working are arranged on sliding blocks at the foremost end and the rearmost end of a travel, the travel switches are connected with a motor control system, and when the sliding blocks travel to the limiting block positions, the travel switches touch the limiting blocks and are powered off through the control system, so that the motor stops rotating; the long sliding rail (3-2) is provided with threaded holes and bolts for limiting and locking the position of the sliding block corresponding to the position of the sliding block in the closed state of the inlet section of the diffuser.
8. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 1, wherein the supporting box (2) is a three-dimensional net box structure formed by staggered transverse and longitudinal supporting plate tendons and bones.
9. The large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism according to claim 1, characterized in that the length of the supporting box (2) along the travel direction of the travel assembly is consistent; the support column (1-1) of the operation platform substrate is of an I-shaped design.
10. Further, the shape of the inner cavity of the sliding block is matched with the shape of the sliding rail, and the sliding block is nested on the sliding rail; 3-4 sliding blocks are arranged on each long sliding rail, and 1-2 sliding blocks are arranged on each short sliding rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310167572.8A CN116046329A (en) | 2023-02-27 | 2023-02-27 | Large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310167572.8A CN116046329A (en) | 2023-02-27 | 2023-02-27 | Large-scale hypersonic high-temperature wind tunnel diffuser inlet section opening and closing mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117387898A (en) * | 2023-12-12 | 2024-01-12 | 中国航空工业集团公司沈阳空气动力研究所 | Locking and sealing mechanism and locking and sealing method for wind tunnel residence chamber and super-expansion section |
| CN117928879A (en) * | 2024-03-22 | 2024-04-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Large-caliber hypersonic wind tunnel test cabin capable of being opened and closed in segmented mode and application method thereof |
-
2023
- 2023-02-27 CN CN202310167572.8A patent/CN116046329A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117387898A (en) * | 2023-12-12 | 2024-01-12 | 中国航空工业集团公司沈阳空气动力研究所 | Locking and sealing mechanism and locking and sealing method for wind tunnel residence chamber and super-expansion section |
| CN117387898B (en) * | 2023-12-12 | 2024-02-23 | 中国航空工业集团公司沈阳空气动力研究所 | Locking and sealing mechanism and locking and sealing method for wind tunnel residence chamber and super-expansion section |
| CN117928879A (en) * | 2024-03-22 | 2024-04-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Large-caliber hypersonic wind tunnel test cabin capable of being opened and closed in segmented mode and application method thereof |
| CN117928879B (en) * | 2024-03-22 | 2024-05-31 | 中国空气动力研究与发展中心超高速空气动力研究所 | Large-caliber hypersonic wind tunnel test cabin capable of being opened and closed in segmented mode and application method thereof |
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