Open large angle of attack support interference five degree of freedom test adjusting device and method

Abstract

The application provides an open large-angle support interference five-degree-of-freedom test adjusting device and method, and belongs to the field of wind tunnel test equipment. The purpose is to solve the problems of space angle and displacement deviation of the connection between the existing model and support interference auxiliary measuring mechanism. The application comprises a support, a support base, a terminal shaft, a transition shaft sleeve, a model connecting support rod, a spherical bearing seat, an X-axis moving adjusting support base, a Y-axis moving adjusting support base and a spherical bearing. The support base is connected with the large-angle device through the support. The X-axis moving adjusting support base and the Y-axis moving adjusting support base are arranged in the support base. The X-axis moving adjusting support base is connected with the spherical bearing seat, and the spherical bearing seat is internally provided with the spherical bearing. One end of the terminal shaft is fixed with the spherical bearing, and the other end is connected with the model connecting support rod through the transition shaft sleeve. The application solves the problems of space angle and displacement deviation of the connection between the model and the support interference auxiliary measuring mechanism, guarantees the accuracy of the connection, and is helpful to improve the accuracy of the large-angle test.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind tunnel test equipment, in particular to an open high angle of attack support interference five-degree-of-freedom test adjusting device and method. BACKGROUND

[0002] The problem of high angle of attack test aerodynamic force is one of the key technologies for the development of advanced and high-maneuverable aircraft weapons, and the main test device is a high angle of attack device. The high angle of attack support interference test can accurately obtain the interference quantity of the tail support system on the test result, and when the test result of the aircraft tail support is given, the corresponding tail support system interference can be deducted. In the high angle of attack test, the model produces vibration due to the aerodynamic force, flow field flow pulsation and flow separation of the model itself. Larger vibration can easily lead to structural damage of the model mechanism. The auxiliary measurement support used in the high angle of attack support interference test has weak strength and stiffness, and is prone to deformation in the high angle of attack test. It is difficult to assemble the next time after disassembly, which seriously affects the efficiency of the high angle of attack test.

[0003] The connecting device connected with the support interference support rod on the support interference auxiliary measurement mechanism is the core functional component thereof, and efficient connection and accurate adjustment of the end support rod and the support rod connected with the model are important factors to ensure the smooth progress of the high angle of attack test. The space angle and displacement deviation often occur between the existing model and the support interference auxiliary measurement mechanism, which has an adverse effect on the accuracy and reliability of the high angle of attack test, and may further cause large errors in the test data. SUMMARY

[0004] In the following, a brief summary of the present application is given in order to provide a basic understanding of some aspects of the present application. It should be understood that this summary is not an extensive overview of the present application. It is not intended to identify key or critical elements of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present some concepts in a simplified form as a prelude to the more detailed description to be discussed later.

[0005] In view of this, in order to solve the problem of space angle and displacement deviation existing in the connection between the existing model and the support interference auxiliary measurement mechanism, the present application provides an open high angle of attack support interference five-degree-of-freedom test adjusting device and method.

[0006] Scheme one: an open high angle of attack support interference five-degree-of-freedom test adjusting device, comprising a support and a support interference auxiliary measurement mechanism, the support interference auxiliary measurement mechanism comprising a support, an X-axis movement adjusting bolt, a Y-axis movement adjusting bolt, an X-axis rotation adjusting pull rod, an end shaft, a transition shaft sleeve, a model connecting support rod, a spherical bearing seat, an X-axis movement adjusting support, a Y-axis movement adjusting support, a spherical bearing, a Y-axis rotation adjusting pull rod, a third square sleeve, a first support column, a second support column, a third support column and a fourth support column.

[0007] The support is symmetrically provided with supports on the left and right sides, and the supports are connected with the large angle device;

[0008] The inside rear side of the support is vertically slidably installed with a Y-axis moving adjustment support, the front side of the Y-axis moving adjustment support is horizontally slidably installed with an X-axis moving adjustment support, two X-axis moving adjustment bolts pass through the left and right side plates of the support and are connected with the X-axis moving adjustment support, and two Y-axis moving adjustment bolts pass through the upper and lower side plates of the support and are connected with the Y-axis moving adjustment support;

[0009] The front side of the X-axis moving adjustment support is fixedly connected with a spherical bearing seat, and the spherical bearing seat is internally provided with a spherical bearing;

[0010] One end of the end shaft is fixedly connected with the spherical bearing through a shaft end stop ring, and the other end is connected with the model connecting support rod through a transition shaft sleeve;

[0011] The spherical bearing seat is provided with a first support and a second support, and the rear ends of the X-axis rotary adjustment pull rod and the Y-axis rotary adjustment pull rod are connected with the first support and the second support;

[0012] The end shaft is sleeved with a third square sleeve, the third square sleeve is provided with a third support and a fourth support, and the front ends of the X-axis rotary adjustment pull rod and the Y-axis rotary adjustment pull rod are connected with the third support and the fourth support;

[0013] The X-axis rotary adjustment pull rod and the Y-axis rotary adjustment pull rod are distributed at a 90-degree angle;

[0014] The end shaft is connected with the lower side plate of the support through a fastening connection part.

[0015] Further, the fastening connection part comprises a large gasket, a first fastening nut, a fastener and a second fastening nut; the fastener comprises a first square sleeve and a first stud;

[0016] The lower end of the first stud passes through the hole position of the lower side plate of the support, is connected with the support through the large gasket and the first fastening nut, and the upper end of the first stud is connected with the side surface of the first square sleeve;

[0017] The end shaft is sleeved with a second square sleeve, the second square sleeve is provided with a second stud on the left side, the left end of the second stud passes through the first square sleeve and is connected with the second fastening nut, and the relative position of the support and the end shaft is fixed by locking the first fastening nut and the second fastening nut.

[0018] Further, the hole position of the lower side plate of the support meets the displacement movement requirement of the fastener with the displacement of the end shaft.

[0019] Further, limit blocks are arranged on both sides of the X-axis movement adjustment support and the Y-axis movement adjustment support.

[0020] Further, the part of the end shaft inserted into the transition shaft sleeve of the model connecting support rod is knurled.

[0021] Further, clearance fit is adopted among the end shaft, the transition shaft sleeve and the model connecting support rod.

[0022] Further, the transition shaft sleeve is provided with a transition shaft sleeve fastening screw, so that the relative positions of the transition shaft sleeve, the end shaft and the model connecting support rod are fixed.

[0023] Further, the X-axis rotation adjustment pull rod and the Y-axis rotation adjustment pull rod are composed of fish eye ball bearings and double-end reverse thread studs, the front ends of the double-end reverse thread studs are connected with the end shaft through the fish eye ball bearings, and the rear ends of the double-end reverse thread studs are connected with the spherical bearing seat through the fish eye ball bearings.

[0024] Scheme two: an open large angle of attack support interference five-degree-of-freedom test adjustment method, specifically comprising the following steps:

[0025] S1. Loosen the first fastening nut, the second fastening nut, the X-axis movement adjustment bolt, the Y-axis movement adjustment bolt and the transition shaft sleeve fastening screw;

[0026] S2. Adjust the Y-axis direction displacement of the end shaft by adjusting the two Y-axis movement adjustment bolts, and after the end shaft is adjusted to a suitable position, the two Y-axis movement adjustment bolts are fastened to each other to lock the Y-axis position of the end shaft;

[0027] S3. Adjust the X-axis direction displacement of the end shaft by adjusting the two X-axis movement adjustment bolts, and after the end shaft is adjusted to a suitable position, the two X-axis movement adjustment bolts are fastened to each other to lock the X-axis position of the end shaft;

[0028] S4. Adjust the rotation angle of the end shaft in the X-axis by adjusting the X-axis rotation adjustment pull rod, and adjust the rotation angle of the end shaft in the Y-axis by adjusting the Y-axis rotation adjustment pull rod, and after the end shaft is adjusted to a position that can be connected with the model connecting support rod, the X-axis rotation adjustment pull rod and the Y-axis rotation adjustment pull rod are self-locked to realize preliminary fixation of the end shaft;

[0029] S5. Lock the second fastening nut and the two first fastening nuts to strengthen the fixation of the end shaft;

[0030] S6. Slide the transition shaft sleeve to connect the end shaft and the model connecting support rod, fasten the transition shaft sleeve fastening screw to fix the end shaft and the model connecting support rod together, and the assembly is completed.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] 1. The application effectively solves the problems of spatial angle and displacement deviation of the connection between the model and the support interference auxiliary measurement mechanism, ensuring the accuracy of the connection between the two, and helping to improve the precision of high angle of attack test;

[0033] 2. The application adds a fastening assembly to increase the overall stiffness, effectively preventing the impact on the assembly due to vibration during high angle of attack test, and avoiding the risk of structural damage caused by vibration;

[0034] 3. In the application, the transition shaft sleeve is connected with the end shaft and the model connecting rod through gap fitting and corresponding fastening method, making the whole device easy to operate during adjustment, which helps to improve the test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0035] The drawings described herein are used to provide further understanding of the application, and form a part of the application. The illustrative embodiments of the application and their descriptions are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0036] Figure 1 It is a general schematic diagram of an open high angle of attack support interference five degree of freedom test adjustment device;

[0037] Figure 2 It is a perspective view of the support interference auxiliary measurement mechanism;

[0038] Figure 3 It is a half cutaway isometric view of the support interference auxiliary measurement mechanism;

[0039] Figure 4 It is a front view of the support interference auxiliary measurement mechanism.

[0040] In the drawings: 1 - support interference auxiliary measurement mechanism support, 2 - support, 3 - X-axis movement adjustment bolt, 4 - Y-axis movement adjustment bolt, 5 - X-axis rotation adjustment pull rod, 6 - end shaft, 7 - transition shaft sleeve, 8 - model connecting rod, 9 - large gasket, 10 - first fastening nut, 11 - fastener, 12 - second fastening nut, 13 - spherical bearing seat, 14 - transition shaft sleeve fastening screw, 15 - X-axis movement adjustment support, 16 - Y-axis movement adjustment support, 17 - spherical bearing, 18 - Y-axis rotation adjustment pull rod, 19 - first square sleeve, 20 - first stud, 21 - second square sleeve, 22 - third square sleeve, 23 - second stud, 24 - first strut, 25 - second strut, 26 - third strut, 27 - fourth strut. DETAILED DESCRIPTION

[0041] In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0042] Embodiment 1, reference Figures 1-4 In this embodiment, an opening large angle of attack support interference five degree of freedom test adjustment device is described, which comprises a support 1 and a support interference auxiliary measuring mechanism, the support interference auxiliary measuring mechanism comprises a support 2, an X-axis moving adjustment bolt 3, a Y-axis moving adjustment bolt 4, an X-axis rotating adjustment pull rod 5, an end shaft 6, a transition shaft sleeve 7, a model connecting strut 8, a spherical bearing seat 13, an X-axis moving adjustment support 15, a Y-axis moving adjustment support 16, a spherical bearing 17, a Y-axis rotating adjustment pull rod 18, a third square sleeve 22, a first strut 24, a second strut 25, a third strut 26, and a fourth strut 27.

[0043] The support 2 is symmetrically provided with the support 1 on the left and right sides, and the support 1 is connected with the large angle of attack device;

[0044] The Y-axis moving adjustment support 16 is vertically slidably installed on the inside rear side of the support 2, the X-axis moving adjustment support 15 is horizontally slidably installed on the front side of the Y-axis moving adjustment support 16, two X-axis moving adjustment bolts 3 pass through the left and right side plates of the support 2 and are connected with the X-axis moving adjustment support 15, and two Y-axis moving adjustment bolts 4 pass through the upper and lower side plates of the support 2 and are connected with the Y-axis moving adjustment support 16.

[0045] The front side of the X-axis moving adjustment support 15 is fixedly connected with the spherical bearing seat 13, and the spherical bearing seat 13 is internally provided with the spherical bearing 17.

[0046] One end of the end shaft 6 is fixedly connected with the spherical bearing 17 through a shaft end stop ring, and the other end is connected with the model connecting strut 8 through the transition shaft sleeve 7;

[0047] The spherical bearing seat 13 is provided with the first strut 24 and the second strut 25, and the rear ends of the X-axis rotating adjustment pull rod 5 and the Y-axis rotating adjustment pull rod 18 are connected with the first strut 24 and the second strut 25.

[0048] The end shaft 6 is sleeved with the third square sleeve 22, the third square sleeve 22 is provided with the third strut 26 and the fourth strut 27, and the front ends of the X-axis rotating adjustment pull rod 5 and the Y-axis rotating adjustment pull rod 18 are connected with the third strut 26 and the fourth strut 27.

[0049] The X-axis rotating adjustment pull rod 5 and the Y-axis rotating adjustment pull rod 18 are distributed at a 90-degree angle.

[0050] The end shaft 6 is connected with the lower side plate of the support 2 through a fastening connection.

[0051] Further, the fastening connection comprises a large gasket 9, a first fastening nut 10, a fastener 11, and a second fastening nut 12; the fastener 11 comprises a first square sleeve 19 and a first stud 20;

[0052] The lower end of the first stud 20 passes through the hole position of the lower side plate of the support 2, is connected with the support 2 through the large gasket 9 and the first fastening nut 10, and the upper end of the first stud 20 is connected with the side surface of the first square sleeve 19;

[0053] The end shaft 6 is sleeved with a second square sleeve 21, the left side of the second square sleeve 21 is provided with a second stud 23, the left end of the second stud 23 passes through the first square sleeve 19 and is connected with the second fastening nut 12, and the relative position of the support 2 and the end shaft 6 is fixed by locking the first fastening nut 10 and the second fastening nut 12.

[0054] Further, the hole position of the lower side plate of the support 2 meets the displacement movement requirement of the fastener 11 with the end shaft 6.

[0055] Further, the X-axis movement adjusting support 15 and the Y-axis movement adjusting support 16 are provided with limiting blocks on both sides.

[0056] Further, the part of the end shaft 6 inserted into the transition shaft sleeve 7 is knurled.

[0057] Further, the end shaft 6, the transition shaft sleeve 7 and the model connecting support rod 8 are gap-fitted.

[0058] Further, the transition shaft sleeve 7 is provided with a transition shaft sleeve fixing screw 14, so that the relative positions of the transition shaft sleeve 7, the end shaft 6 and the model connecting support rod 8 are fixed.

[0059] Further, the X-axis rotation adjusting pull rod 5 and the Y-axis rotation adjusting pull rod 18 are composed of a fish eye ball bearing and a double-end reverse thread stud, the front end of the double-end reverse thread stud is connected with the end shaft 6 through the fish eye ball bearing, and the rear end of the double-end reverse thread stud is connected with the spherical bearing seat 13 through the fish eye ball bearing.

[0060] Embodiment 2, an open large angle of attack support interference five-degree-of-freedom test adjustment method, specifically comprising the following steps:

[0061] S1. Loosen the first fastening nut 10, the second fastening nut 12, the X-axis movement adjusting bolt 3, the Y-axis movement adjusting bolt 4, and the transition shaft sleeve fixing screw 14;

[0062] S2. Adjust the displacement of the end shaft 6 in the Y-axis direction by adjusting the two Y-axis movement adjustment bolts 4, and after adjusting to the appropriate position, fasten the two Y-axis movement adjustment bolts 4 to each other to lock the position of the end shaft 6 in the Y-axis direction;

[0063] S3. Adjust the displacement of the end shaft 6 in the X-axis direction by adjusting the two X-axis movement adjustment bolts 3, and after adjusting to the appropriate position, fasten the two X-axis movement adjustment bolts 3 to each other to lock the position of the end shaft 6 in the X-axis direction;

[0064] S4. Adjust the rotation angle of the end shaft 6 in the X-axis direction by adjusting the X-axis rotation adjustment pull rod 5, and adjust the rotation angle of the end shaft 6 in the Y-axis direction by adjusting the Y-axis rotation adjustment pull rod 18, and after adjusting to the position that can realize smooth connection with the model connecting strut 8, self-lock the X-axis rotation adjustment pull rod 5 and the Y-axis rotation adjustment pull rod 18 to realize preliminary fixation of the end shaft 6;

[0065] S5. Lock the second fastening nut 12 and the two first fastening nuts 10 to strengthen the fixation of the position of the end shaft 6;

[0066] S6. Slide the transition shaft sleeve 7 to connect the end shaft 6 and the model connecting strut 8 in sequence, fasten the transition shaft sleeve fixing screw 14 to fix the end shaft 6 and the model connecting strut 8 together, and the assembly is completed.

[0067] Through the present application, the problem of spatial angle and displacement deviation of the connection of the model and the support interfering with the auxiliary measurement mechanism is effectively solved, the accuracy of the connection of the two is guaranteed, which helps to improve the precision of the high angle of attack test; the transition shaft sleeve, the end shaft and the model connecting strut are connected through gap fit and corresponding fastening mode, which makes the whole device convenient to operate during adjustment, and helps to improve the test efficiency.

[0068] Through the present application, the impact of vibration on the assembly in the high angle of attack test can be effectively prevented, the risk of structural damage caused by vibration can be avoided, the stability of the device structure is improved as a whole, and the test can be carried out smoothly.

[0069] Although the present application is described in accordance with a limited number of embodiments, those skilled in the art, with the benefit of the above description, will appreciate that other embodiments can be conceived within the scope of the application described herein. In addition, it should be noted that the language used in the specification is mainly selected for readability and instructional purposes, and is not selected to explain or limit the subject matter of the present application. Therefore, many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the appended claims. The disclosure of the present application is illustrative rather than limiting, and the scope of the present application is defined by the appended claims.

Claims

1. An open large angle of attack bracket interference five degree of freedom test adjustment device, characterized in that, The bracket (1) and the bracket interference auxiliary measuring mechanism, the bracket interference auxiliary measuring mechanism includes support (2), X axis movement adjusting bolt (3), Y axis movement adjusting bolt (4), X axis rotation adjusting pull rod (5), end shaft (6), transition shaft sleeve (7), model connecting strut (8), spherical bearing seat (13), X axis movement adjusting support (15), Y axis movement adjusting support (16), spherical bearing (17), Y axis rotation adjusting pull rod (18), third square sleeve (22), first support (24), second support (25), third support (26), fourth support (27); The support (2) is symmetrically provided with the bracket (1) on the left and right sides, and the bracket (1) is connected with the large angle device; The rear side of the inside of the support (2) is vertically slidably installed with the Y axis movement adjusting support (16), the front side of the Y axis movement adjusting support (16) is horizontally slidably installed with the X axis movement adjusting support (15), two X axis movement adjusting bolts (3) pass through the left and right side plates of the support (2) and are connected with the X axis movement adjusting support (15), and two Y axis movement adjusting bolts (4) pass through the upper and lower side plates of the support (2) and are connected with the Y axis movement adjusting support (16); The front side of the X axis movement adjusting support (15) is fixedly connected with the spherical bearing seat (13), and the spherical bearing seat (13) is internally provided with the spherical bearing (17); One end of the end shaft (6) is fixedly connected with the spherical bearing (17) through the shaft end stop ring, and the other end is connected with the model connecting strut (8) through the transition shaft sleeve (7); The spherical bearing seat (13) is provided with the first support (24) and the second support (25), and the rear ends of the X axis rotation adjusting pull rod (5) and the Y axis rotation adjusting pull rod (18) are connected with the first support (24) and the second support (25); The end shaft (6) is provided with the third square sleeve (22), the third square sleeve (22) is provided with the third support (26) and the fourth support (27), and the front ends of the X axis rotation adjusting pull rod (5) and the Y axis rotation adjusting pull rod (18) are connected with the third support (26) and the fourth support (27); The X axis rotation adjusting pull rod (5) and the Y axis rotation adjusting pull rod (18) are distributed at a 90-degree angle; The end shaft (6) is connected with the lower side plate of the support (2) through the fastening connection part.

2. The adjustment device for open position high angle of attack support interference five degrees of freedom test according to claim 1, characterized in that, The fastening connection part includes a large gasket (9), a first fastening nut (10), a fastener (11), and a second fastening nut (12); the fastener (11) includes a first square sleeve (19) and a first stud (20); The lower end of the first stud (20) passes through the hole position of the lower side plate of the support (2), is connected with the support (2) through the large gasket (9) and the first fastening nut (10), and the upper end of the first stud (20) is connected with the side surface of the first square sleeve (19). The end shaft (6) is sleeved with a second square sleeve (21), the left side of the second square sleeve (21) is provided with a second stud (23), the left end of the second stud (23) penetrates through the first square sleeve (19) and is connected with the second fastening nut (12), and the relative position of the support (2) and the end shaft (6) is fixed by locking the first fastening nut (10) and the second fastening nut (12).

3. The adjustment device for open position high angle of attack support interference five degrees of freedom test of claim 2, wherein, The lower side plate hole of the support (2) meets the displacement requirement of the fastener (11) corresponding to the displacement of the end shaft (6).

4. The adjustment device for open position high angle of attack support interference five degrees of freedom test of claim 1, wherein, The X-axis movement adjusting support (15) and the Y-axis movement adjusting support (16) are provided with limiting stoppers on the two sides.

5. The adjustment device for open position high angle of attack support interference five degrees of freedom test of claim 2, wherein, The part of the end shaft (6) and the model connecting support rod (8) inserted into the transition shaft sleeve (7) is knurled.

6. The adjustment device for open position high angle of attack support interference five degrees of freedom test of claim 5, wherein, The end shaft (6), the transition shaft sleeve (7) and the model connecting support rod (8) are gap-fitted.

7. The adjustment device for open position high angle of attack support interference five degrees of freedom test of claim 6, wherein, The transition shaft sleeve (7) is provided with a transition shaft sleeve fastening screw (14), so that the relative positions of the transition shaft sleeve (7), the end shaft (6) and the model connecting support rod (8) are fixed.

8. The adjustment device for open position high angle of attack support interference five degrees of freedom test of claim 1, wherein, The X-axis rotation adjusting pull rod (5) and the Y-axis rotation adjusting pull rod (18) are composed of a fish-eye ball bearing and a double-end reverse thread stud, the front end of the double-end reverse thread stud is connected with the end shaft (6) through the fish-eye ball bearing, and the rear end of the double-end reverse thread stud is connected with the spherical bearing seat (13) through the fish-eye ball bearing.

9. An adjustment method of open large angle bracket interference five degree of freedom test, relying on the adjustment device of open large angle bracket interference five degree of freedom test in claim 7 is completed, it is characterized in being, Specifically, the following steps are included: S1. Loosen the first fastening nut (10), the second fastening nut (12), the X-axis movement adjusting bolt (3), the Y-axis movement adjusting bolt (4) and the transition shaft sleeve fastening screw (14); S2. Adjust the Y-axis direction displacement of the end shaft (6) by adjusting the two Y-axis movement adjusting bolts (4), and after adjusting to the appropriate position, the two Y-axis movement adjusting bolts (4) are fastened to each other to lock the Y-axis position of the end shaft (6); S3. Adjust the X-axis direction displacement of the end shaft (6) by adjusting the two X-axis movement adjusting bolts (3), and after adjusting to the appropriate position, the two X-axis movement adjusting bolts (3) are fastened to each other to lock the X-axis position of the end shaft (6); S4. Adjust the rotation angle of the end shaft (6) on the X-axis by adjusting the X-axis rotation adjusting pull rod (5), and adjust the rotation angle of the end shaft (6) on the Y-axis by adjusting the Y-axis rotation adjusting pull rod (18), and after adjusting to the position where the model connecting support rod (8) is connected in sequence, the X-axis rotation adjusting pull rod (5) and the Y-axis rotation adjusting pull rod (18) are self-locked to realize the preliminary fixation of the end shaft (6); S5. Lock the second fastening nut (12) and the two first fastening nuts (10) to strengthen the fixation of the position of the end shaft (6); S6. Slide the transition shaft sleeve (7) to connect the end shaft (6) and the model connecting support rod (8) in sequence, fasten the transition shaft sleeve fastening screw (14), and fix the end shaft (6) and the model connecting support rod (8) together to complete the assembly.

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