Separated body separating and positioning mechanism and separated body position adjusting method

Abstract

The invention provides a separated body separation positioning mechanism and a separated body position adjusting method.The separated body separation positioning mechanism comprises an aircraft model fixed to the root of a wind tunnel supporting rod, a connecting plate is detachably installed at the position, close to the aircraft model, of the wind tunnel supporting rod, and the connecting plate is rotationally connected with a separated body located under the aircraft model; a locking mechanism is arranged between the connecting plate and the separating body; the method further comprises the following steps: S1, analyzing the position of a separation body, and confirming the position of a positioning bolt; and S2, analyzing the attack angle alpha of the separated body, and confirming the position of the locking bolt. By arranging the connecting plate and the locking mechanism, multi-position adjustment of the separated body in the experiment process is facilitated, detailed research on the load and dynamic response of the determined position of the separated body is facilitated, a traditional free aircraft test which is inconvenient to research and measure is effectively replaced, and the conditions that the test cost is increased and a wind tunnel is damaged are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic elasticity testing, and in particular to a separation and positioning mechanism for a separation body and a method for adjusting the position of a separation body. Background Art

[0002] In modern joint operations, it is often necessary to use aircraft to drop bombs to attack targets. The bombs dropped by the aircraft are the separation bodies. Generally speaking, it is necessary to study the load and response of the separation process for the separation body structure. Usually, such tests are carried out using free flight tests, that is, optically measuring the posture and response of the separation structure during the actual separation process.

[0003] However, the traditional model device has the following shortcomings:

[0004] (1) In free-flight vehicle tests, it is impossible to attach sensors to the separated body, making it difficult to measure the load and dynamic response of the separated body.

[0005] (2) During the test of the separated object, the residence time of each position of the separated object is short, which is not conducive to a detailed study of the load and dynamic response at a certain position.

[0006] (3) The falling of the separation body will cause damage to the separation body structure, increase the test cost, and may also cause damage to the wind tunnel. Summary of the invention

[0007] The object of the present invention is to provide a separation and positioning mechanism for a separation body and a method for adjusting the position of a separation body, so as to solve the above-mentioned technical problems.

[0008] The present invention provides a separation and positioning mechanism for a separation body, comprising an aircraft model fixed at the root of a wind tunnel support rod, wherein a connecting plate is detachably installed at a position of the wind tunnel support rod close to the aircraft model, a separation body located directly below the aircraft model is rotatably connected to the connecting plate, and a locking mechanism is arranged between the connecting plate and the separation body.

[0009] Furthermore, the root of the wind tunnel support rod is detachably connected to the aircraft model.

[0010] Furthermore, a connecting frame is provided on the top of the connecting plate, and the connecting frame is detachably connected to the wind tunnel support rod.

[0011] Furthermore, the connecting plate is vertically mounted on the bottom of the connecting frame, and one of the surfaces of the connecting plate is coplanar with the symmetric plane of the connecting frame.

[0012] Furthermore, a front fixed waist hole and a rear fixed waist hole are vertically opened on the connecting plate, and the front fixed waist hole and the rear fixed waist hole are arranged in parallel.

[0013] Furthermore, one end of the separation body close to the connecting plate is connected to an adjustment plate via a connecting rod, and the adjustment plate is connected to the connecting plate via the locking mechanism.

[0014] Furthermore, a positioning hole is provided at a position of the adjustment plate away from the separation body, and an adjustment waist hole is provided at a position of the adjustment plate close to the separation body.

[0015] Furthermore, the locking mechanism includes a positioning bolt and a locking bolt, the positioning hole is connected to the front fixed waist hole through the positioning bolt, and the adjusting waist hole is connected to the rear fixed waist hole through the locking bolt.

[0016] Furthermore, the contact surface between the adjustment plate and the connection plate is coplanar with the symmetry plane of the connection frame, and the axis of the separation body is coplanar with the symmetry plane of the connection frame.

[0017] The present invention also provides a separation body position adjustment method, comprising the following steps:

[0018] S1, analyze the position of the separated body, and determine the position of the positioning bolt in the front fixed waist hole based on the position of the extension line of the tail end of the separated body. 1 , tighten the positioning bolts in the front fixing waist holes;

[0019] S2, analyze the attack angle α of the separation body, according to

[0020] X 2 =tanα*l+X 1

[0021] Where: α represents the angle of attack of the separation body, X 1 Indicates the position of the positioning bolt in the front fixed waist hole, X 2 Indicates the position of the locking bolt in the rear fixing waist hole, l indicates the axial distance between the front fixing waist hole and the rear fixing waist hole;

[0022] Determine the position of the locking bolt in the rear fixing waist hole X 2 , move the locking bolt in the rear fixing waist hole to this position and tighten the locking bolt in the rear fixing waist hole.

[0023] The present invention facilitates multi-position adjustment of the separation body during the experiment by arranging a connecting plate and a locking mechanism, which is beneficial to a detailed study of the load and dynamic response of a determined position of the separation body, effectively replacing the traditional free-flying vehicle test which is inconvenient to study and measure, and avoiding an increase in test costs and damage to the wind tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an isometric test diagram of the present invention;

[0026] Figure 2 It is a front view of the present invention;

[0027] Figure 3 It is an isometric test diagram of the separation body and the connection part of the present invention;

[0028] Figure 4 It is an isometric test diagram of the connection component of the present invention;

[0029] Figure 5 It is a left side view of the connecting component of the present invention;

[0030] Figure 6 It is a front view of the connecting component of the present invention;

[0031] Figure 7 It is an isometric test diagram of the connecting rod and the adjusting plate of the present invention;

[0032] Figure 8 It is a top view and a front view of the connecting rod and the adjusting plate of the present invention;

[0033] Fig. 9 It is a principle diagram of the separation body position adjustment method of the present invention;

[0034] Fig.10 This is a schematic diagram of a separation body position adjustment method according to Embodiment 2 of the present invention;

[0035] Description of reference numerals:

[0036] In the figure: 1-aircraft model, 2-wind tunnel support rod, 31-connecting frame, 32-connecting plate, 4-front fixed waist hole, 5-rear fixed waist hole, 6-separation body, 71-adjusting plate, 711-adjusting waist hole, 712-positioning hole, 72-connecting rod, 81-positioning bolt, 82-locking bolt; DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example 1

[0041] like Figure 1-Figure 9 As shown:

[0042] A separation and positioning mechanism for a separation body comprises an aircraft model 1 fixed at the root of a wind tunnel support rod 2. The aircraft model 1 and the wind tunnel support rod 2 are coaxially arranged. A connecting plate 32 is detachably installed at a position of the wind tunnel support rod 2 close to the aircraft model 1. A separation body 6 which rotates in a vertical plane and is located directly below the aircraft model 1 is connected to the connecting plate 32. A locking mechanism is arranged between the connecting plate 32 and the separation body 6.

[0043] The root of the wind tunnel support rod 2 is detachably connected to the aircraft model 1 through a fixing bolt or a fixing key.

[0044] like Figure 1-Figure 6As shown, a concave connecting frame 31 is provided on the top of the connecting plate 32, and the connecting frame 31 is detachably connected to the wind tunnel support rod 2 by fixing bolts.

[0045] The connecting plate 32 is vertically mounted on the bottom of the connecting frame 31 , and one surface of the connecting plate 32 is coplanar with the symmetric surface of the connecting frame 31 .

[0046] A front fixing waist hole 4 and a rear fixing waist hole 5 are vertically opened on the connecting plate 32, and the front fixing waist hole 4 and the rear fixing waist hole 5 are arranged in parallel.

[0047] like Figure 1-Figure 3 and Figure 7 As shown, one end of the separation body 6 close to the connecting plate 32 is connected to the adjustment plate 71 through a connecting rod 72, and the adjustment plate 71 is connected to the connecting plate 32 through a locking mechanism.

[0048] A positioning hole 712 is formed at a position of the adjustment plate 71 away from the separation body 6 , and an adjustment waist hole 711 is formed at a position of the adjustment plate 71 close to the separation body 6 .

[0049] The locking mechanism includes a positioning bolt 81 and a locking bolt 82 . The positioning hole 712 is connected to the front fixed waist hole 4 through the positioning bolt 81 , and the adjusting waist hole 711 is connected to the rear fixed waist hole 5 through the locking bolt 82 .

[0050] The contact surface between the adjustment plate 71 and the connection plate 32 is coplanar with the symmetry plane of the connection frame 31 , and the axis of the separation body 6 is coplanar with the symmetry plane of the connection frame 31 .

[0051] like Figure 5 As shown, the positioning bolt 81 and the locking bolt 82 have the same size, the thickness a of the connecting plate 32 should be greater than 6 mm, and it is located on one side of the symmetry axis of the connecting frame 31; the length b of the connecting plate 32 is optimally 10 cm-20 cm, and in this embodiment, the length b of the connecting plate 32 is 15 cm; the length c of one end of the positioning bolt 81 and the locking bolt 82 exposed from the nut should be greater than 4 mm.

[0052] like Figure 6 As shown, the axial distance d between the front fixed waist hole 4 and the rear fixed waist hole 5 should not be less than 3 cm; the opening length e of the front fixed waist hole 4 and the rear fixed waist hole 5 should not be less than 10 cm.

[0053] like Figure 8 As shown, the opening length f of the adjusting waist hole 711 should be 1cm-2cm longer than the axial distance d between the front fixed waist hole 4 and the rear fixed waist hole 5; the diameter g of the positioning hole 712 is equal to the opening height h of the adjusting waist hole 711, and should be 1mm-2mm longer than the diameter of the positioning bolt 81 and the locking bolt 82.

[0054] The structures in the device are all made of metal materials, and the elastic modulus of the connecting frame 31, the connecting plate 32 and the connecting rod 72 is not less than 200 GPa.

[0055] like Fig. 9 As shown, the present invention also provides a separation body position adjustment method, comprising the following steps:

[0056] S1, analyze the position of the separation body 6, determine the position X1 of the positioning bolt 81 in the front fixed waist hole 4 based on the position of the extension line of the rear end of the separation body 6, and tighten the positioning bolt 81 in the front fixed waist hole 4;

[0057] S2, analyze the attack angle α of the separation body 6, according to

[0058] X2=tanα*l+X1

[0059] Wherein: α represents the attack angle of the separation body 6, X1 represents the position of the positioning bolt 81 in the front fixed waist hole 4, X2 represents the position of the locking bolt 82 in the rear fixed waist hole 5, and l represents the axial distance between the front fixed waist hole 4 and the rear fixed waist hole 5;

[0060] Determine the position X2 of the locking bolt 82 in the rear fixed waist hole 5, move the locking bolt 82 in the rear fixed waist hole 5 to this position and tighten the locking bolt 82 in the rear fixed waist hole 5. After determining the position of the locking bolt 82, it is necessary to loosen the positioning bolt 81 first to facilitate the rotation of the separation body 6 so that the locking bolt 82 rotates to the determined position.

[0061] The attack angle α of the separation body 6 can be obtained by measuring instruments such as a three-dimensional laser scanner and a three-dimensional coordinate measuring machine.

[0062] When using the device to perform experimental tests, corresponding sensors can be fixed on the separation body 6 to measure the load and response of the separation body 6, and corresponding sensors can also be fixed on the aircraft model 1 to measure the load and response of the aircraft model 1.

[0063] During the installation process, the wind tunnel support rod 2 is first fixed to the wind tunnel, and then the aircraft model 1 and the connecting frame 3 are fixed to the wind tunnel support rod 2 using fixing bolts, fixing keys and other connecting parts. The connecting rod 72 and the separation body 6 are fixed using fixing bolts, fixing keys and other connecting parts, and finally, according to the separation body position adjustment method, the adjustment plate 71 is fixed to the front fixing waist hole 4 and the rear fixing waist hole 5 of the connecting plate 32 using the positioning bolts 81 and the locking bolts 82.

[0064] The sensors include the following: pulsating pressure sensors can measure the acoustic and vibration response of the structure; balance sensors can measure the aerodynamic forces and moments in all directions of the structure; acceleration sensors and displacement sensors can measure the frequency, vibration mode and other structural dynamic characteristics of the structure.

[0065] The present invention facilitates multi-position adjustment of the separation body during the experiment by arranging a connecting plate and a locking mechanism, which is beneficial to a detailed study of the load and dynamic response of a determined position of the separation body, effectively replacing the traditional free-flying vehicle test which is inconvenient to study and measure, and avoiding an increase in test costs and damage to the wind tunnel.

[0066] Example 2

[0067] like Fig.10 As shown, in embodiment 1, the separation body 6 is arranged obliquely downward, while in this embodiment, the separation body 6 is arranged obliquely upward.

[0068] In this embodiment, a separation body position adjustment method includes the following steps:

[0069] S1, analyze the position of the separation body 6, determine the position X1 of the positioning bolt 81 in the front fixed waist hole 4 based on the position of the extension line of the rear end of the separation body 6, and tighten the positioning bolt 81 in the front fixed waist hole 4;

[0070] S2, analyze the attack angle α of the separation body 6, according to

[0071] X2=X1-tanα*l

[0072] Wherein: α represents the attack angle of the separation body 6, X1 represents the position of the positioning bolt 81 in the front fixed waist hole 4, X2 represents the position of the locking bolt 82 in the rear fixed waist hole 5, and l represents the axial distance between the front fixed waist hole 4 and the rear fixed waist hole 5;

[0073] Determine the position X2 of the locking bolt 82 in the rear fixed waist hole 5, move the locking bolt 82 in the rear fixed waist hole 5 to this position and tighten the locking bolt 82 in the rear fixed waist hole 5. After determining the position of the locking bolt 82, it is necessary to loosen the positioning bolt 81 first to facilitate the rotation of the separation body 6 so that the locking bolt 82 rotates to the determined position.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A separation and positioning mechanism for a separation body, characterized in that It comprises an aircraft model fixed at the root of a wind tunnel support rod, wherein a connecting plate is detachably installed at a position of the wind tunnel support rod close to the aircraft model, a separating body located directly below the aircraft model is rotatably connected to the connecting plate, and a locking mechanism is arranged between the connecting plate and the separating body.

2. The separation and positioning mechanism of the separation body according to claim 1, characterized in that: The root of the wind tunnel support rod is detachably connected to the aircraft model.

3. The separation and positioning mechanism of the separation body according to claim 1, characterized in that: A connecting frame is arranged on the top of the connecting plate, and the connecting frame is detachably connected to the wind tunnel support rod.

4. The separation and positioning mechanism of the separation body according to claim 3, characterized in that: The connecting plate is vertically mounted at the bottom of the connecting frame, and one of the surfaces of the connecting plate is coplanar with the symmetric surface of the connecting frame.

5. The separation and positioning mechanism of the separation body according to claim 1, characterized in that: A front fixing waist hole and a rear fixing waist hole are vertically opened on the connecting plate, and the front fixing waist hole and the rear fixing waist hole are arranged in parallel.

6. The separation and positioning mechanism of the separation body according to claim 5, characterized in that: One end of the separation body close to the connecting plate is connected to an adjustment plate via a connecting rod, and the adjustment plate is connected to the connecting plate via the locking mechanism.

7. The separation and positioning mechanism of the separation body according to claim 6, characterized in that: A positioning hole is formed at a position of the adjustment plate away from the separation body, and an adjustment waist hole is formed at a position of the adjustment plate close to the separation body.

8. The separation and positioning mechanism of the separation body according to claim 7, characterized in that: The locking mechanism comprises a positioning bolt and a locking bolt, the positioning hole is connected to the front fixed waist hole through the positioning bolt, and the adjusting waist hole is connected to the rear fixed waist hole through the locking bolt.

9. The separation and positioning mechanism of the separation body according to claim 6, characterized in that: The contact surface between the adjustment plate and the connection plate is coplanar with the symmetry plane of the connection frame, and the axis of the separation body is coplanar with the symmetry plane of the connection frame.

10. A method for adjusting the position of a separation body, characterized in that: The following steps are involved: S1, analyze the position of the separation body, determine the position X1 of the positioning bolt in the front fixed waist hole based on the position of the extension line of the rear end of the separation body, and tighten the positioning bolt in the front fixed waist hole; S2, analyze the attack angle α of the separation body, according to X2=tanα*l+X1 Where: α represents the attack angle of the separation body, X1 represents the position of the positioning bolt in the front fixed waist hole, X2 represents the position of the locking bolt in the rear fixed waist hole, and l represents the axial distance between the front fixed waist hole and the rear fixed waist hole; Determine the position X2 of the locking bolt in the rear fixing waist hole, move the locking bolt in the rear fixing waist hole to the position, and tighten the locking bolt in the rear fixing waist hole.

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