A device for quickly detecting the operating angle of a sideslip angle mechanism in a low-speed wind tunnel

Abstract

The present invention discloses a device for quickly detecting the operating angle of a sideslip angle mechanism of a low-speed wind tunnel, belonging to the field of wind tunnel test measurement. The device includes a general base of the lower turntable of the wind tunnel, a guide rail mounting seat, a bearing mounting support, a pinion shaft, a coupling, a potentiometer, an outer cover, a planetary reducer, a linear guide rail, a slider, a tapered roller bearing, a potentiometer mounting seat and a position adjusting mechanism. One end face of the pinion shaft is integrally connected with a pinion, and the pinion meshes with a large gear ring of the lower turntable of the wind tunnel. The pinion shaft is sequentially connected to the measuring end of the potentiometer through a planetary reducer and a coupling. The position adjusting mechanism is connected to the bearing mounting support, and the position adjusting mechanism is used to adjust the meshing position of the pinion and the large gear ring. This device can measure the operating angle and accuracy of the sideslip angle mechanism of the wind tunnel in real time, improve the test efficiency of production-type low-speed wind tunnels, and reduce the test cost.

Description

Technical Field

[0001] The invention belongs to the field of wind tunnel test measurement, and particularly relates to a device for quickly detecting the operating angle of a sideslip angle mechanism of a low-speed wind tunnel. Background Art

[0002] In the conventional aircraft force measurement wind tunnel test, a sequence of test angles required in advance is listed, and these angles are measured one by one during the test. During the test, at each angle, it is necessary to wait for the model to reach the position and stabilize, and then collect the test data at this position. This step is carried out for each required angle. After the test, a data file is formed and provided to the data analysts. Therefore, quickly and accurately measuring the operating angle of the sideslip angle mechanism of the wind tunnel plays an important role in ensuring the accuracy and reliability of the test results. Summary of the Invention

[0003] Based on the above deficiencies, the invention provides a device for quickly detecting the operating angle of a sideslip angle mechanism of a low-speed wind tunnel, which solves the problem that the operating angle of the sideslip angle mechanism of the wind tunnel cannot be quickly and accurately measured.

[0004] The technical solution adopted by the invention is as follows: A device for quickly detecting the operating angle of a sideslip angle mechanism of a low-speed wind tunnel, including a general base of the wind tunnel lower turntable, a guide rail mounting seat, a bearing mounting support, a pinion shaft, a coupling, a potentiometer, an outer cover, a planetary reducer, a linear guide rail, a slider, a tapered roller bearing, a potentiometer mounting seat and a position adjusting mechanism. A pinion is integrally connected to the pinion shaft, and the pinion meshes with a large gear ring of the wind tunnel lower turntable. The other side of the pinion shaft is connected to the planetary reducer. The planetary reducer is connected to the measuring end of the potentiometer through a coupling. The planetary reducer and the potentiometer are both located inside the outer cover. One end face of the outer cover is fixedly connected to the front end face of the bearing mounting support. The potentiometer is fixedly connected to one end of the potentiometer mounting seat. The other end of the potentiometer mounting seat passes through the outer cover and is fixedly connected to the bearing mounting support. The journal of the pinion shaft is installed on the bearing mounting support through a tapered roller bearing. The lower end face of the bearing mounting support is fixedly connected to a slider, and the slider is slidably connected to the linear guide rail. The linear guide rail is parallel to the movement plane formed by the meshing of the pinion and the large gear ring. The linear guide rail is fixedly connected to the guide rail mounting seat, and the guide rail mounting seat is fixedly connected to the general base of the wind tunnel lower turntable. A position adjusting mechanism is installed on the general base of the wind tunnel lower turntable. The position adjusting mechanism is connected to the bearing mounting support, and the position adjusting mechanism is used to adjust the meshing position of the pinion and the large gear ring.

[0005] Furthermore, the position adjustment mechanism includes a pull rod, a lock nut, a spring support and a spring. A spring is sleeved on the pull rod. One end of the spring abuts against the side wall surface of the bearing mounting support, and the other end of the spring abuts against the side wall surface of the spring support. One end of the pull rod is fixedly connected to the bearing mounting support, and the other end of the pull rod passes through the spring support and is threadedly connected to the lock nut.

[0006] Furthermore, the axes of the pinion shaft, the coupling, the planetary reducer and the potentiometer coincide.

[0007] Furthermore, it further includes an outer cover bottom cover which is fixedly connected to the other end face of the outer cover.

[0008] Furthermore, it further includes a front bearing end cover and a rear bearing end cover. The front bearing end cover and the rear bearing end cover are respectively installed on the front and rear installation end faces of the bearing mounting support and the tapered roller bearing.

[0009] The present invention has the following advantages and beneficial effects: This device can measure the running angle and accuracy of the wind tunnel sideslip angle mechanism in real time, improve the test efficiency of the production-type low-speed wind tunnel, and reduce the test cost. Description of the Drawings

[0010] Figure 1 It is the front view of a device for quickly detecting the running angle of the wind tunnel sideslip angle mechanism of the present invention;

[0011] Figure 2 It is the A-A sectional view of a device for quickly detecting the running angle of the wind tunnel sideslip angle mechanism of the present invention;

[0012] Figure 3 It is the B-B sectional view of a device for quickly detecting the running angle of the wind tunnel sideslip angle mechanism of the present invention;

[0013] Figure 4 It is the detection connection structure diagram of a device for quickly detecting the running angle of the wind tunnel sideslip angle mechanism of the present invention. Detailed Embodiments

[0014] The following further illustrates the present invention with reference to the drawings of the specification:

[0015] Embodiment 1

[0016] As Figures 1-4As shown in the figure, a device for quickly detecting the operating angle of a sideslip angle mechanism in a low-speed wind tunnel includes a general base 3 of the lower turntable of the wind tunnel, a guide rail mounting seat 4, a bearing mounting support 5, a pinion shaft 6, a coupling 7, a potentiometer 8, an outer cover 10, a planetary reducer 11, a linear guide rail 12, a slider 13, a tapered roller bearing 15, a potentiometer mounting seat 18, and a position adjustment mechanism. A pinion is integrally connected to one side of the pinion shaft 6, and the pinion meshes with the large gear ring of the lower turntable of the wind tunnel. The other side of the pinion shaft 6 is connected to the planetary reducer 11, and the planetary reducer 11 is connected to the measuring end of the potentiometer 8 through the coupling 7. The planetary reducer 11 and the potentiometer 8 are both located inside the outer cover 10. One end face of the outer cover 10 is fixedly connected to the front end face of the bearing mounting support 5. The potentiometer 8 is fixedly connected to one end of the potentiometer mounting seat 18, and the other end of the potentiometer mounting seat 18 passes through the outer cover 10 and is fixedly connected to the bearing mounting support 5. The journal of the pinion shaft 6 is mounted on the bearing mounting support 5 through the tapered roller bearing 15. The lower end face of the bearing mounting support 5 is fixedly connected to the slider 13, and the slider 13 is slidably connected to the linear guide rail 12. The linear guide rail 12 is parallel to the movement plane formed by the meshing of the pinion and the large gear ring. The linear guide rail 12 is fixedly connected to the guide rail mounting seat 4, and the guide rail mounting seat 4 is fixedly connected to the general base 3 of the lower turntable of the wind tunnel. A position adjustment mechanism is mounted on the general base 3 of the lower turntable of the wind tunnel. The position adjustment mechanism is connected to the bearing mounting support 5. The position adjustment mechanism is used to adjust the meshing position of the pinion and the large gear ring. Five of the six degrees of freedom of the bearing mounting support 5 are restricted by the linear guide rail, and it is only a free end in the plane formed by the center line of the pinion shaft 6 and the large gear ring.

[0017] Embodiment 2

[0018] As Figures 1-4 shown, the difference between this embodiment and Embodiment 1 is that the position adjustment mechanism includes a pull rod 1, a locking nut 2, a spring support 16, and a spring 17. The spring 17 is sleeved on the pull rod 1. One end of the spring 17 abuts against the side wall surface of the bearing mounting support 5, and the other end of the spring 17 abuts against the side wall surface of the spring support 16. One end of the pull rod 1 is fixedly connected to the bearing mounting support 5, and the other end of the pull rod 1 passes through the spring support 16 and is threadedly connected to the locking nut 2. The rest of the structure is the same as that of Embodiment 1. When there is a movement gap between the large gear ring and the pinion shaft 6, the meshing position of the large gear ring and the pinion shaft 6 can be quickly adjusted through the pull rod 1. After the adjustment is in place, the locking nut 2 is fixed.

[0019] Embodiment 3

[0020] As Figures 1-4As shown, the difference between this embodiment and Embodiment 1 is that the axes of the pinion shaft 6, the coupling 7, the planetary reducer 11, and the potentiometer 8 coincide. The remaining structures are the same as those in Embodiment 1.

[0021] Embodiment 4

[0022] As Figures 1-4 shown, the difference between this embodiment and Embodiment 1 is that it further includes an outer cover bottom cover 9, and the outer cover bottom cover 9 is fixedly connected to the other end face of the outer cover 10. The remaining structures are the same as those in Embodiment 1.

[0023] Embodiment 5

[0024] As Figures 1-4 shown, the difference between this embodiment and Embodiment 1 is that it further includes a front bearing end cover 19 and a rear bearing end cover 14, and the front bearing end cover 19 and the rear bearing end cover 14 are respectively installed on the front and rear installation end faces of the bearing installation support 5 and the tapered roller bearing 15. The remaining structures are the same as those in Embodiment 1.

Claims

1. A device for quickly detecting the operating angle of a sideslip angle mechanism in a low-speed wind tunnel, comprising a general base (3) of the lower turntable of the wind tunnel, a guide rail mounting seat (4), a bearing mounting support (5), a pinion shaft (6), a coupling (7), a potentiometer (8), a housing (10), a planetary reducer (11), a linear guide rail (12), a slider (13), a tapered roller bearing (15), a potentiometer mounting seat (18) and a position adjusting mechanism, characterized in that: One side of the pinion shaft (6) is integrally connected with a pinion, and the pinion meshes with the large gear ring of the wind tunnel lower turntable. The other side of the pinion shaft (6) is connected to the planetary reducer (11). The planetary reducer (11) is connected to the measuring end of the potentiometer (8) through a coupling (7). The planetary reducer (11) and the potentiometer (8) are both located inside the outer cover (10). One end face of the outer cover (10) is fixedly connected to the front end face of the bearing mounting support (5). The potentiometer (8) is fixedly connected to one end of the potentiometer mounting seat (18). The other end of the potentiometer mounting seat (18) passes through the outer cover (10) and is fixedly connected to the bearing mounting support (5). The journal of the pinion shaft (6) is mounted on the bearing mounting support (5) through a tapered roller bearing (15). The lower end face of the bearing mounting support (5) is fixedly connected with a slider (13). The slider (13) is slidably connected to a linear guide rail (12). The linear guide rail (12) is parallel to the movement plane formed by the meshing of the pinion and the large gear ring. The linear guide rail (12) is fixedly connected to the guide rail mounting seat (4). The guide rail mounting seat (4) is fixedly connected to the overall base (3) of the wind tunnel lower turntable. A position adjusting mechanism is installed on the overall base (3) of the wind tunnel lower turntable. The position adjusting mechanism is connected to the bearing mounting support (5). The position adjusting mechanism is used to adjust the meshing position of the pinion and the large gear ring.

2. The device for quickly detecting the operating angle of the sideslip angle mechanism of a low-speed wind tunnel according to claim 1, characterized in that: The position adjusting mechanism includes a pull rod (1), a locking nut (2), a spring support (16) and a spring (17). A spring (17) is sleeved on the pull rod (1). One end of the spring (17) abuts against the side wall surface of the bearing mounting support (5). The other end of the spring (17) abuts against the side wall surface of the spring support (16). One end of the pull rod (1) is fixedly connected to the bearing mounting support (5). The other end of the pull rod (1) passes through the spring support (16) and is threadedly connected to the locking nut (2).

3. A device for quickly detecting the operating angle of a sideslip angle mechanism in a low-speed wind tunnel according to claim 1 or 2, characterized in that: The axes of the pinion shaft (6), the coupling (7), the planetary reducer (11) and the potentiometer (8) coincide.

4. A device for quickly detecting the operating angle of a sideslip angle mechanism of a low-speed wind tunnel, according to claim 3, wherein: It also includes an outer cover bottom cover (9). The outer cover bottom cover (9) is fixedly connected to the other end face of the outer cover (10).

5. The device for quickly detecting the operating angle of the sideslip angle mechanism of a low-speed wind tunnel according to claim 4, characterized in that: It also includes a front bearing end cover (19) and a rear bearing end cover (14). The front bearing end cover (19) and the rear bearing end cover (14) are respectively installed on the front and rear mounting end faces of the bearing mounting support (5) and the tapered roller bearing (15).

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