CN112054471A - Wind tunnel continuous variable rolling mechanism cable protection device - Google Patents
Wind tunnel continuous variable rolling mechanism cable protection device Download PDFInfo
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- CN112054471A CN112054471A CN202010970571.3A CN202010970571A CN112054471A CN 112054471 A CN112054471 A CN 112054471A CN 202010970571 A CN202010970571 A CN 202010970571A CN 112054471 A CN112054471 A CN 112054471A
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- wind tunnel
- rotating wheel
- rolling
- protection device
- automatic wire
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/02—Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
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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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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a cable protection device of a wind tunnel continuous variable rolling mechanism. The cable protection device comprises a feedback unit and an automatic wire-rewinding device; the feedback unit is arranged on the driving device and receives a rolling motion feedback signal of the driving device; and a rotating wheel of the automatic wire-rewinding device is wound with a test cable. When the roll angle of the model is 0 degree, the automatic wire-rewinding device is in a natural state, the test cable with proper length is wound on the rotating wheel, after the roll mechanism rotates, the absolute value of the roll angle is increased, the rotating wheel rotates, and the automatic wire-rewinding device stretches out of the test cable towards the roll axis direction; when the absolute value of the roll angle of the roll shaft becomes smaller, the automatic wire-rewinding device retracts the extended test cable under the action of the curling yellow. The cable protection device is simple in structure and reliable in operation, the test cable can be ensured to be freely received and placed in a certain telescopic range, the safe rolling range of the wind tunnel continuous variable rolling mechanism is further limited, the rolling test requirements are met, and the safety of the test cable and the wind tunnel continuous variable rolling mechanism is also ensured.
Description
Technical Field
The invention belongs to the technical field of wind tunnel test equipment, and particularly relates to a cable protection device of a wind tunnel continuous variable rolling mechanism.
Background
In wind tunnel tests, aerodynamic characteristics of various aircraft (or component) models under different rolling angles are often required to be measured, and the model sideslip angle can be realized through the combination of the model attack angle and the rolling angle. The mode of changing the roll angle generally has two modes of manual operation and automatic operation: the manual mode needs to stop the test, the roll angle of the mechanism is manually adjusted, and only one roll angle can be replaced each time; the automatic mode is generally realized by a driving device such as a motor and the like, the roll angle can be continuously changed in the blowing process, the test efficiency can be greatly improved by the automatic mode, and the automatic device is generally called as a wind tunnel continuous variable roll mechanism.
In the wind tunnel continuous variable rolling mechanism, the test cables such as the skyline and the like can move along with the wind tunnel continuous variable rolling mechanism when the roll angle of the model changes, and the test cables are necessarily protected to avoid extrusion and pulling of the test cables in the wind tunnel continuous variable rolling mechanism. Under extreme conditions, if the wind tunnel driving device is out of control, the wind tunnel continuous rolling mechanism can roll continuously for multiple circles, the safety range is greatly exceeded, and the test cable is certainly damaged.
Currently, it is necessary to develop a cable protection device for a wind tunnel continuous variable rolling mechanism to ensure the safety of a test cable.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cable protection device of a wind tunnel continuous variable-roll mechanism.
The cable protection device of the wind tunnel continuous variable rolling mechanism is arranged on an upper curved cutter bracket and a lower curved cutter bracket of a wind tunnel super-expansion section parking chamber, the middle parts of the upper curved cutter bracket and the lower curved cutter bracket of the wind tunnel super-expansion section parking chamber are middle brackets, a cavity is formed in the center of the middle bracket, a rolling shaft is arranged at the front end of the middle bracket, a driving device is arranged at the rear end of the middle bracket, the rolling shaft and the driving device are connected through a coupler, and the rolling shaft, the coupler and the driving device are coaxial with the middle bracket; the rolling shaft is provided with a threading hole communicated with the threading hole in the middle bracket; the tail end of the wind tunnel model is inserted into and fixed on the rolling shaft, and a test cable of the wind tunnel model extends out of the tail end of the wind tunnel model and enters the wiring hole through the wiring hole; the control system controls the driving device to perform rolling motion; the cable protection device is characterized by comprising a feedback unit and an automatic wire-rewinding device; the feedback unit is arranged on the driving device and receives a rolling motion feedback signal of the driving device; winding a test cable on a rotating wheel of the automatic wire rewinding device;
the main body of the automatic wire-rewinding device is a rotating wheel, and one side of the rotating wheel is fixed on the middle bracket through a bottom plate; the center of the bottom plate is provided with a cylindrical central column, the cylindrical central column extends out of the rotating wheel from the other side of the rotating wheel, the top end of the cylindrical central column is provided with a thread, the cover plate penetrates through the cylindrical central column and then is fixed on the other side of the rotating wheel through a nut assembled with the thread, and the nut limits the play of the rotating wheel; the cover plate is provided with a buckle, the other side of the rotating wheel is provided with an arc-shaped groove corresponding to the buckle, and the other side of the rotating wheel is also fixed with a limiting block II crossing the arc-shaped groove; the inner cavity of the rotating wheel is provided with a curling iron, one end of the curling iron is fixed on the cylindrical central column, and the other end of the curling iron is fixed on the inner wall of the rotating wheel through a curling iron clamping pin after winding the central column;
the driving device, the feedback unit, the limit sensor and the control system are connected through signal cables respectively.
Furthermore, a limiting sensor is fixed on the middle support, and a limiting block I corresponding to the limiting sensor is fixed on the rolling shaft.
Furthermore, the limit sensor is a photoelectric sensor.
Furthermore, the automatic wire rewinding device is placed on the outer edge of the lower portion of the lower bending knife support and at the tail end of the threading hole.
Furthermore, the nut is fixed on the thread at the top end of the cylindrical central column after being provided with the gasket.
When the roll angle of a model of the wind tunnel continuous variable-roll mechanism cable protection device is 0 degree, the automatic wire-rewinding device is in a natural state, a test cable with proper length is wound on the rotating wheel, after the roll mechanism rotates, the absolute value of the roll angle is increased, the rotating wheel rotates, the automatic wire-rewinding device extends out of one end of the test cable towards the roll axis direction, and the other end of the test cable is fixed; when the absolute value of the roll angle of the roll shaft becomes smaller, the automatic wire-rewinding device retracts the extended test cable under the action of the curling yellow.
The working process of the wind tunnel continuous variable-roll mechanism cable protection device is as follows:
in the primary blowing process of the wind tunnel, the wind tunnel control system automatically controls the change of the roll angle of the model according to the set roll angle target value, when the absolute value of the roll angle of the model is changed from small to large, the roll mechanism pulls out the test cable wound on the automatic wire rewinding device rotating wheel, the test cable is wound on the roll shaft, and when the absolute value of the roll angle is changed from large to small, the automatic wire rewinding device retracts the test cable on the roll shaft. The control system carries out corresponding safety control on the rolling mechanism according to the rolling angle and the limiting sensor signals tested by the feedback unit and preset safety measures, so that the safety of the tested cable is ensured. The safety measure is typically to stop the roll shaft from continuing to rotate and return the roll shaft to zero or a safe angular position as the situation requires.
The cable protection device for the wind tunnel continuous variable rolling mechanism ensures that the test cable can be freely retracted and released in a certain telescopic range by designing the automatic retractor and limiting mode of the test cable on the wind tunnel continuous variable rolling mechanism, further limits the safe rolling range of the wind tunnel continuous variable rolling mechanism, meets the rolling test requirement, ensures the safety of the test cable and also ensures the safety and reliability of the wind tunnel continuous variable rolling mechanism.
The wind tunnel continuous variable-rolling mechanism cable protection device is simple in structure and reliable in operation.
Drawings
FIG. 1a is a schematic structural diagram (front view) of a cable protection device of a wind tunnel continuously variable roll mechanism according to the present invention;
FIG. 1b is a schematic structural diagram (side view) of a cable protection device of a wind tunnel continuously variable roll mechanism according to the present invention;
FIG. 1c is a schematic structural diagram (cross-sectional view) of a cable protection device of a wind tunnel continuously variable roll mechanism according to the present invention;
FIG. 2a is a schematic structural view (front view) of an automatic wire rewinding device in the cable protection device of the wind tunnel continuously variable rolling mechanism according to the present invention;
FIG. 2b is a schematic structural view (A-A cross section) of an automatic wire-rewinding device in the wind tunnel continuous variable-roll mechanism cable protection device according to the present invention;
FIG. 2c is a schematic structural view (top view) of an automatic take-up device in the cable protection device of the wind tunnel continuously variable-roll mechanism according to the present invention;
FIG. 2d is a schematic structural view (B-B cross sectional view) of an automatic wire-rewinding device in the wind tunnel continuous variable-roll mechanism cable protection device according to the present invention;
FIG. 2e is a schematic structural view (perspective view) of an automatic take-up device in the cable protection device of the wind tunnel continuously variable-roll mechanism of the present invention;
in the figure, 1 is a middle bracket 2, a rolling shaft 3, a driving device 4, a coupler 5, a feedback unit 6, a control system 7, an automatic wire-rewinding device 8, a limit sensor 9 and a limit block I;
70. the bottom plate 71, the rotating wheel 72, the cover plate 73, the washer 74, the nut 75, the buckle 76, the limiting block II 77, the curling yellow 78 and the card curling yellow pin.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1a to fig. 1c, the cable protection device of the wind tunnel continuous variable rolling mechanism of the invention is installed on the upper and lower curved blade supports of the wind tunnel super-expansion section parking chamber, the middle parts of the upper and lower curved blade supports of the wind tunnel super-expansion section parking chamber are middle supports 1, the center of the middle support 1 is provided with a cavity, a rolling shaft 2 is installed at the front end of the middle support 1, a driving device 3 is installed at the rear end of the middle support 1, the rolling shaft 2 and the driving device 3 are connected through a coupler 4, and the rolling shaft 2, the coupler 4 and the driving device 3 are coaxial with the middle support 1; the rolling shaft 2 is provided with a threading hole communicated with the wiring hole in the middle bracket 1; the tail end of the wind tunnel model is inserted into and fixed on the rolling shaft 2, and a test cable of the wind tunnel model extends out of the tail end of the wind tunnel model and enters the wiring hole through the wiring hole; the control system 6 controls the driving device 3 to perform rolling movement; the cable protection device comprises a feedback unit 5 and an automatic wire-rewinding device 7; the feedback unit 5 is installed on the driving device 3, and the feedback unit 5 receives a rolling motion feedback signal of the driving device 3; a test cable is wound on the rotating wheel 71 of the automatic wire rewinding device 7;
as shown in fig. 2a to 2e, the main body of the automatic wire rewinding device 7 is a rotating wheel 71, and one side of the rotating wheel 71 is fixed on the middle bracket 1 through a bottom plate 70; a cylindrical central column is arranged in the center of the bottom plate 70, the cylindrical central column extends out of the rotating wheel 71 from the other side of the rotating wheel 71, the top end of the cylindrical central column is provided with threads, a cover plate 72 penetrates through the cylindrical central column and then is fixed on the other side of the rotating wheel 71 through a nut 74 matched with the threads, and the nut 74 limits the running of the rotating wheel 71; a buckle 75 is arranged on the cover plate 72, an arc-shaped groove corresponding to the buckle 75 is arranged on the other side of the rotating wheel 71, and a limiting block II 76 crossing the arc-shaped groove is further fixed on the other side of the rotating wheel 71; the inner cavity of the rotating wheel 71 is provided with a curling yellow 77, one end of the curling yellow 77 is fixed on the cylindrical central column, and after winding the central column, the other end is fixed on the inner wall of the rotating wheel 71 through a clamping curling yellow pin 78;
the driving device 3, the feedback unit 5, the limit sensor 8 and the control system 6 are connected through signal cables respectively, and the signal cables are led out from the rear end of the middle support 1.
And a limit sensor 8 is fixed on the middle support 1, and a limit block I9 corresponding to the limit sensor 8 is fixed on the rolling shaft 2.
The limit sensor 8 is a photoelectric sensor.
The automatic wire-rewinding device 7 is arranged at the outer edge of the lower part of the lower curved knife bracket and at the tail end of the threading hole.
The nut 74 is fixed on the thread at the top end of the cylindrical central column after being provided with the washer 73.
Example 1
The working process of the embodiment is as follows:
a. winding the test cable on the rotating wheel 71 of the automatic wire rewinding device 7; one end of the test cable is led out from the arc-shaped groove of the rotating wheel 71, fixed on the rotating wheel 71 through a buckle 75 and connected with an external test system; after the other end of the test cable is led out of the rotating wheel 71, the test cable is connected with the test cable of the wind tunnel model through the threading hole of the middle bracket 1 and the routing hole of the rolling shaft 2 in sequence;
b. the control system 6 controls the rolling shaft 2 to roll, the test cable wound on the automatic wire rewinding device 7 is pulled in the rolling process of the rolling shaft 2 to drive the rotating wheel 71 to rotate, the rotating wheel 71 rotates to discharge the test cable wound on the upper part of the rotating wheel 71 and is wound on the rolling shaft 2, the feedback unit 5 feeds back a rolling angle signal in real time, when the rolling angle reaches a preset threshold value, the control system 6 triggers a primary emergency response mechanism of the wind tunnel rolling mechanism, and when the limiting block I9 rotates to the position of the limiting sensor 8, the control system 6 triggers a secondary emergency response mechanism of the wind tunnel rolling mechanism;
c. when the rolling shaft 2 needs to be rolled back to zero, the control system 6 controls the rolling shaft 2 to return to zero and roll, in the process of returning to zero and rolling the rolling shaft 2, the rolling shaft 2 is placed back to the test cable wound on the rolling shaft 2, the automatic wire-rewinding device 7 pulls the test cable, and the rotating wheel 71 automatically retracts the test cable.
Claims (5)
1. A cable protection device of a wind tunnel continuous variable rolling mechanism is arranged on upper and lower curved knife brackets of a wind tunnel super-expansion section parking chamber, the middle parts of the upper and lower curved knife brackets of the wind tunnel super-expansion section parking chamber are middle brackets (1), a cavity is formed in the center of each middle bracket (1), a rolling shaft (2) is arranged at the front end of each middle bracket (1), a driving device (3) is arranged at the rear end of each middle bracket (1), the rolling shaft (2) is connected with the driving device (3) through a coupler (4), and the rolling shaft (2), the coupler (4) and the driving device (3) are coaxial with the middle brackets (1); the rolling shaft (2) is provided with a threading hole communicated with the wiring hole in the middle bracket (1); the tail end of the wind tunnel model is inserted into and fixed on the rolling shaft (2), and a test cable of the wind tunnel model extends out of the tail end of the wind tunnel model and enters the wiring hole through the wiring hole; the control system (6) controls the driving device (3) to perform rolling motion; the cable protection device is characterized by comprising a feedback unit (5) and an automatic wire-rewinding device (7); the feedback unit (5) is arranged on the driving device (3), and the feedback unit (5) receives a rolling motion feedback signal of the driving device (3); a test cable is wound on a rotating wheel (71) of the automatic wire-rewinding device (7);
the main body of the automatic wire-rewinding device (7) is a rotating wheel (71), and one side of the rotating wheel (71) is fixed on the middle support (1) through a bottom plate (70); a cylindrical central column is arranged in the center of the bottom plate (70), the cylindrical central column extends out of the rotating wheel (71) from the other side of the rotating wheel (71), threads are arranged at the top end of the cylindrical central column, a cover plate (72) penetrates through the cylindrical central column and then is fixed on the other side of the rotating wheel (71) through a nut (74) assembled with the threads, and the nut (74) limits the moving of the rotating wheel (71); a buckle (75) is arranged on the cover plate (72), an arc-shaped groove corresponding to the buckle (75) is arranged on the other side of the rotating wheel (71), and a limiting block II (76) crossing the arc-shaped groove is further fixed on the other side of the rotating wheel (71); the inner cavity of the rotating wheel (71) is provided with a curling iron (77), one end of the curling iron (77) is fixed on the cylindrical center post, and after winding the center post, the other end is fixed on the inner wall of the rotating wheel (71) through a yellow clamping and curling pin (78);
the driving device (3), the feedback unit (5), the limit sensor (8) and the control system (6) are connected through signal cables respectively, and the signal cables are led out from the rear end of the middle support (1).
2. The wind tunnel continuous variable-roll mechanism cable protection device according to claim 1, wherein a limit sensor (8) is fixed on the middle support (1), and a limit block I (9) corresponding to the limit sensor (8) is fixed on the roll shaft (2).
3. The wind tunnel continuous variable rolling mechanism cable protection device according to claim 2, wherein the limit sensor (8) is a photoelectric sensor.
4. The wind tunnel continuous variable rolling mechanism cable protection device according to claim 1, wherein the automatic wire-rewinding device (7) is placed at the tail end of a threading hole at the outer edge of the lower portion of the lower bent blade bracket.
5. The wind tunnel continuously variable roll mechanism cable protection device according to claim 1, wherein the nut (74) is fixed on the thread at the top end of the cylindrical central column after being provided with the washer (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970571.3A CN112054471B (en) | 2020-09-16 | 2020-09-16 | Wind tunnel continuous variable rolling mechanism cable protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970571.3A CN112054471B (en) | 2020-09-16 | 2020-09-16 | Wind tunnel continuous variable rolling mechanism cable protection device |
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| Publication Number | Publication Date |
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| CN112054471A true CN112054471A (en) | 2020-12-08 |
| CN112054471B CN112054471B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010970571.3A Active CN112054471B (en) | 2020-09-16 | 2020-09-16 | Wind tunnel continuous variable rolling mechanism cable protection device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600519A (en) * | 2013-10-31 | 2015-05-06 | 珠海格力电器股份有限公司 | Winding and unwinding device and air conditioner |
| CN105527068A (en) * | 2015-12-29 | 2016-04-27 | 中国航天空气动力技术研究院 | Wind tunnel dynamic force measurement test device for canard configuration rotating missile |
| CN106584464A (en) * | 2016-12-31 | 2017-04-26 | 重庆大学 | Method for compensating transmission chain errors of aircraft model of decoupling mechanism in captive trajectory tests |
| CN110411705A (en) * | 2019-08-26 | 2019-11-05 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of automatic change roll angle mechanism suitable for high-speed continuous wind tunnel model |
| CN110793745A (en) * | 2019-12-04 | 2020-02-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Supersonic wind tunnel flow calibration and measurement pressure hose protection device |
| CN212676873U (en) * | 2020-09-16 | 2021-03-09 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel continuous variable rolling mechanism cable protection device |
-
2020
- 2020-09-16 CN CN202010970571.3A patent/CN112054471B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600519A (en) * | 2013-10-31 | 2015-05-06 | 珠海格力电器股份有限公司 | Winding and unwinding device and air conditioner |
| CN105527068A (en) * | 2015-12-29 | 2016-04-27 | 中国航天空气动力技术研究院 | Wind tunnel dynamic force measurement test device for canard configuration rotating missile |
| CN106584464A (en) * | 2016-12-31 | 2017-04-26 | 重庆大学 | Method for compensating transmission chain errors of aircraft model of decoupling mechanism in captive trajectory tests |
| CN110411705A (en) * | 2019-08-26 | 2019-11-05 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of automatic change roll angle mechanism suitable for high-speed continuous wind tunnel model |
| CN110793745A (en) * | 2019-12-04 | 2020-02-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Supersonic wind tunnel flow calibration and measurement pressure hose protection device |
| CN212676873U (en) * | 2020-09-16 | 2021-03-09 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel continuous variable rolling mechanism cable protection device |
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| CN112054471B (en) | 2021-08-06 |
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