High-adaptability flexible adjustable omni-directional buffering butt joint rod under disturbance of aircraft

Abstract

The invention discloses a high-adaptability flexible adjustable omni-directional buffering butt joint rod under disturbance of an aircraft, and particularly relates to the technical field of air butt joint. Comprising a mounting flange, the mounting flange can be connected with a butt joint mechanism through bolts, a rubber block is arranged on one side of the mounting flange, a connecting cylinder is arranged on one side of the rubber block, the mounting flange, the rubber block and the connecting cylinder are jointly provided with through holes communicating with one another, a limiting rod is arranged in each through hole, and one end of each limiting rod is in threaded connection with a first sliding block; the first sliding block is connected with the mounting flange in a sliding mode, the other end of the limiting rod is wrapped by a second sliding block, a belleville spring wrapping the limiting rod is connected between the second sliding block and the limiting rod, a buffering mechanism is arranged on the connecting cylinder, a guide rod is arranged on the buffering mechanism, and the buffering mechanism is used for providing buffering force for the guide rod during butt joint. By the adoption of the technical scheme, the problem of how to smoothly complete butt joint of the two spacecrafts on the premise that structural safety and attitude stability of the spacecrafts are guaranteed is solved, and the adverse effect generated by butt joint collision force can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aerial docking, and in particular to a highly adaptable, flexible, adjustable, omnidirectional buffer docking rod under aircraft disturbance. Background Art

[0002] Aerial docking technology is the key to achieving a variety of aviation missions and operations. It makes it possible for aircraft to carry out tasks such as refueling, material supply, and emergency rescue in the air, greatly expanding the scope and flexibility of aviation missions.

[0003] However, disturbances to which the aircraft is subjected when flying in the air (such as airflow, heading changes, etc.) will increase the difficulty of docking. The flexible docking rod can effectively reduce the negative impact caused by the position error and relative speed between the end of the docking rod and the capture point of the target in a disturbed environment. The principle is that the flexible design can make the docking rod have a certain deformation at the initial contact stage, thereby avoiding violent collision between the docking surfaces and reducing vibration and impact. However, the flexibility of the docking rod cannot be too large, otherwise it may cause the docking rod to fail to be inserted into the docking slot in a short time, resulting in docking failure and causing adverse consequences.

[0004] In summary, how to ensure the smooth docking of two spacecraft in a disturbed environment and ensure the structural safety and attitude stability of the spacecraft has become a key issue in the aerial docking process. Summary of the invention

[0005] The present invention aims to provide a highly adaptable, flexible, adjustable, omnidirectional buffer docking rod under aircraft disturbance, which solves the problem of how to successfully complete the docking of two spacecraft under the premise of ensuring the structural safety and attitude stability of the spacecraft in a disturbed environment.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: A highly adaptable, flexible, adjustable, omnidirectional buffer docking rod under aircraft disturbance, comprising a mounting flange, the mounting flange being connectable to a docking mechanism by bolts, a rubber block being provided on one side of the mounting flange, a connecting tube being provided on one side of the rubber block, the mounting flange, the rubber block and the connecting tube being commonly provided with mutually interconnected through holes, a limiting rod being provided in the through hole, one end of the limiting rod being threadedly connected to a first slider, the first slider being slidably connected to the mounting flange, the other end of the limiting rod being covered with a second slider, the second slider being located in the connecting tube, a butterfly spring covered outside the limiting rod being connected between the second slider and the limiting rod, a buffer mechanism being provided on the connecting tube, a guide rod being provided on the buffer mechanism, and the buffer mechanism being used to provide a buffering force for the guide rod during docking.

[0007] Furthermore, the mounting flange and the connecting tube are both provided with a first spherical surface, and the first sliding block and the second sliding block are both provided with a second spherical surface matching with the first spherical surface.

[0008] Through the above arrangement, the second spherical surface on the first slider is in frictional contact with the first spherical surface on the mounting flange. When the docking rod is subjected to circumferential impact, the first slider can slide on the spherical surface of the mounting flange. The friction coefficient of the two spherical surfaces is small, so as to reduce friction resistance and increase the buffering effect. Similarly, the second spherical surface on the second slider is in frictional contact with the first spherical surface in the connecting tube. When the docking rod is subjected to circumferential impact, the second slider can slide on the first spherical surface of the connecting tube. The friction coefficient of the two spherical surfaces is small, so as to reduce friction resistance and increase the buffering effect.

[0009] Furthermore, the mounting flange and the connecting tube are both provided with grooves matching with the rubber block.

[0010] Furthermore, the end of the guide rod adopts a third spherical surface.

[0011] Through the above arrangement, the third spherical surface can be used to make the contact surface larger during docking, thereby dispersing the force, reducing local stress concentration, and improving overall durability and safety.

[0012] Furthermore, the upper end of the first sliding block is in the shape of a regular hexagonal prism, and the head of the limiting rod is provided with a hexagonal groove.

[0013] Through the above arrangement, the present invention is easy to disassemble and assemble, has a large load-bearing capacity, and is convenient for tightening the limit rod to compress the disc spring, thereby applying a larger preload force, so that the flexible adjustment range of the docking rod is larger.

[0014] Furthermore, the buffer mechanism includes a movable rod, which is connected to the connecting tube by a connecting bolt, and a movable cylinder is frictionally connected to the movable rod, and the inner wall of the movable cylinder is frictionally connected to the outer wall of the movable rod, and the movable cylinder is screwed to the guide rod, and a compression spring is provided between the movable rod and the guide rod.

[0015] Furthermore, both sides of the connecting tube are cut with mounting step surfaces, and the movable rod and the corresponding part on the movable rod are commonly threadedly connected with connecting bolts arranged on the mounting step surfaces, and the connecting bolts connect the movable rod and the movable cylinder together through nuts and washers.

[0016] Compared with the prior art, this solution has the following beneficial effects:

[0017] 1. This solution integrates passive compliance technology into the docking rod, so that the docking rod will have a certain degree of natural compliance to the force during docking, thereby effectively reducing the force transmission and preventing various adverse consequences caused by excessive contact force. At the same time, there are strict requirements for the flexibility of the docking rod. Too low flexibility may lead to insufficient buffering effect and fail to effectively reduce the force transmission, while too high flexibility may make it impossible for the docking rod to be accurately inserted into the docking slot within the specified time, thereby affecting the smooth completion of the docking process. Therefore, the docking rod has the function of adjustable flexibility, so that its flexibility can be adjusted under different docking conditions to achieve the best buffering effect and docking accuracy, which is the key to ensure the success of aerial docking.

[0018] 2. The docking rod of this solution has the function of adjustable flexibility, which solves the problem that it is difficult for the existing docking rod to adjust the flexibility of the rod according to the working environment and achieve omnidirectional buffering, and can effectively reduce the adverse effects of the docking collision force. The compression of the disc spring is controlled by controlling the depth of the limit rod screwed into the first slider, thereby controlling the size of the preload force. By controlling the preload force, the difficulty of the first slider and the second slider sliding on the corresponding spherical surface can be adjusted, thereby controlling the flexibility of the docking rod. At the same time, the flexibility of the docking rod can be further adjusted by using rubber blocks and disc springs of different hardness. The docking rod has the function of adjustable flexibility, so that its flexibility can be adjusted under different docking conditions to achieve the best buffering effect and docking accuracy.

[0019] 3. In this scheme, the disc spring plays two roles: first, when the end of the docking rod is impacted, the first slider and the second slider slide on the corresponding first spherical surface, so that the distance between the second slider and the head of the limit rod becomes smaller, thereby compressing the disc spring, thereby achieving the effect of absorbing energy and buffering; second, the compression amount of the disc spring can be controlled by controlling the depth of the limit rod screwed into the first slider, that is, controlling the size of the preload force, thereby achieving the adjustment of the difficulty of the two sliders sliding on the corresponding spherical surface, thereby achieving the effect of controlling the flexibility of the docking rod.

[0020] 4. This solution has complete rotational symmetry along the axis of the docking rod, for example: the rubber block, the first slider, the second slider, the movable rod, the movable cylinder, etc. Therefore, the docking rod can achieve a uniform and consistent buffering effect in the circumferential direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an isometric view of a highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance of the present invention;

[0022] Figure 2 It is a cross-sectional view of a highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance of the present invention;

[0023] Figure 3It is a schematic diagram of the mounting flange structure of a highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbances of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of a connecting tube of a highly adaptable, flexible and adjustable omnidirectional buffer docking rod under aircraft disturbances of the present invention;

[0025] Figure 5 The present invention is a schematic diagram of the movable cylinder structure of a highly adaptable, flexible and adjustable omnidirectional buffer docking rod under aircraft disturbance. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below through specific embodiments:

[0027] The figure marks in the drawings of the specification include: mounting flange 1, first slider 2, rubber block 3, limit rod 4, connecting tube 5, second slider 6, disc spring 7, movable rod 8, movable cylinder 9, compression spring 10, guide rod 11, screw 12, bolt 13, nut 14, washer 15, threaded hole 16, mounting step surface 17.

[0028] Example

[0029] like Figures 1 to 5 As shown, a highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance includes a mounting flange 1, and threaded holes 16 are provided at the four corners of the mounting flange 1. The mounting flange 1 can be connected to the end of the docking mechanism through the threaded holes 16 and bolts 13, wherein the size of the threaded holes 16 can be adjusted according to the actual working environment. A square groove is provided at the bottom of the mounting flange 1, and a rubber block 3 is provided in the groove. A connecting tube 5 is provided on one side of the rubber block 3, and a groove matching the rubber block 3 is provided on the top of the connecting tube 5. The mounting flange 1, the rubber block 3 and the connecting tube 5 are coaxially provided with mutually connected through holes, and a limit rod 4 having a size smaller than the inner diameter of the through hole is provided in the through hole. The upper end of the limit rod 4 is threadedly connected to the first slider 2, and the upper end of the first slider 2 is a regular hexagonal prism with a size of the national standard hexagonal nut 14; the first slider 2 is slidably connected to the mounting flange 1, and a first spherical surface for sliding the first slider 2 is provided on the top of the mounting flange 1, and the first slider 2 is provided with a second spherical surface matching the first spherical surface of the mounting flange 1. The lower end of the limiting rod 4 is covered with a second slider 6, the center of the second slider 6 is provided with a through hole covered outside the limiting rod 4, the second slider 6 is located in the connecting tube 5, and the top wall in the connecting tube 5 is provided with a first spherical surface, and the second slider 6 is provided with a second spherical surface matched with the first spherical surface of the connecting tube 5. The head of the limiting rod 4 is provided with a hexagonal groove, the size of which is the national standard hexagonal size, and eight disc springs 7 covered outside the limiting rod 4 are connected between the second slider 6 and the head of the limiting rod 4.

[0030] The connecting tube 5 is provided with a buffer mechanism, and the buffer mechanism is provided with a guide rod 11, and the end of the guide rod 11 adopts a third spherical surface, and the buffer mechanism is used to provide a buffer force for the guide rod 11 during docking. The buffer mechanism includes a movable rod 8, and the movable rod 8 is fixedly connected to the connecting tube 5 by a connecting bolt 13. Both sides of the lower end of the connecting tube 5 are cut with a mounting step surface 17, and the movable rod 8 and the corresponding part on the movable rod 8 are commonly threadedly connected with the connecting bolt 13 set on the mounting step surface 17. The connecting bolt 13 connects the movable rod 8 with the movable cylinder 9 through a nut 14 and a washer 15, and the mounting step surface 17 facilitates the installation of the connecting bolt 13, the nut 14 and the washer 15. The lower side of the movable rod 8 is frictionally connected with a movable cylinder 9, the lower end of the movable rod 8 passes through the movable cylinder 9 and is located inside the movable cylinder 9, the inner wall of the movable cylinder 9 is frictionally connected with the outer wall of the movable rod 8, and the lower end of the movable cylinder 9 is evenly distributed with six threaded holes 16 in the circumferential direction, so that when the end of the docking rod is impacted in the vertical direction, the movable cylinder 9 can slide vertically upward along the movable rod 8, and the friction coefficient of the contact surface between the two is small, so as to reduce friction resistance and increase the buffering effect. The movable rod 8 is connected to the guide rod 11 through the screw 12 and the threaded hole 16, and a compression spring 10 is in contact between the movable rod 8 and the guide rod 11.

[0031] The specific working process of this program is as follows:

[0032] By controlling the depth of the limit rod 4 screwed into the first slider 2, the distance between the head of the limit rod 4 and the second slider 6 is controlled, and then the compression amount of the disc spring 7 is controlled, so as to adjust the size of the control preload. The greater the preload, the more difficult it is for the first slider 2 and the second slider 6 to slide, and the lower the flexibility of the docking rod. On the contrary, the higher the flexibility of the docking rod. In addition, the flexibility of the docking rod can also be adjusted by replacing the rubber block 3 and the disc spring 7 of different hardness. Therefore, in actual use, the flexibility of the docking rod can be adjusted according to different work tasks to achieve the best buffering effect and docking accuracy.

[0033] When the docking rod is subjected to circumferential impact, the docking rod is bent by force, so that the rubber block 3 absorbs energy through local compression, thereby achieving a buffering effect. At the same time, the first slider 2 and the second slider 6 slide on the corresponding first spherical surface, so that the distance between the second slider 6 and the head of the limit rod 4 becomes smaller, thereby further compressing the disc spring 7, achieving a multiple buffering effect. When the impact force disappears, due to the elasticity of the rubber block 3 and the disc spring 7, the docking rod can automatically return to the original position in a short time.

[0034] In addition, when the docking rod is impacted in the vertical direction, the compression spring 10 in the movable cylinder 9 is compressed to buffer the energy consumption. In order to prevent the compression spring 10 from tipping over or shifting, a certain preload is applied to the compression spring 10, that is, when not impacted, the distance from the bottom surface of the movable rod 8 to the top of the guide rod 11 is less than the original length of the compression spring. In this example, the distance from the bottom surface of the movable rod 8 to the top of the guide rod 11 is 40 mm, the original length of the selected compression spring is 42 mm, and the preload is 2 mm. At the same time, the appropriate preload can also enable the compression spring 10 to return to its original state faster and eliminate vibration when further compressed.

[0035] The above are only embodiments of the present invention, and the common knowledge such as the known specific structures and / or characteristics in the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A highly adaptable flexible and adjustable omnidirectional buffer docking rod under aircraft disturbance, characterized in that: The invention comprises a mounting flange (1), wherein the mounting flange (1) can be connected to a docking mechanism by means of bolts (13), a rubber block (3) is provided on one side of the mounting flange (1), a connecting tube (5) is provided on one side of the rubber block (3), through holes which are interconnected are provided on the mounting flange (1), a limiting rod (4) is provided in the through hole, one end of the limiting rod (4) is threadedly connected to a first slider (2), the first slider (2) is slidably connected to the mounting flange (1), the other end of the limiting rod (4) is covered with a second slider (6), the second slider (6) is located in the connecting tube (5), a butterfly spring (7) covered outside the limiting rod (4) is connected between the second slider (6) and the limiting rod (4), a buffer mechanism is provided on the connecting tube (5), a guide rod (11) is provided on the buffer mechanism, and the buffer mechanism is used to provide a buffer force for the guide rod (11) during docking.

2. The highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance according to claim 1, characterized in that: The mounting flange (1) and the connecting tube (5) are both provided with a first spherical surface, and the first sliding block (2) and the second sliding block (6) are both provided with a second spherical surface matching the first spherical surface.

3. The highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance according to claim 1, characterized in that: The mounting flange (1) and the connecting tube (5) are both provided with grooves matching with the rubber block (3).

4. The highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance according to claim 1, characterized in that: The end of the guide rod (11) adopts a third spherical surface.

5. The highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance according to claim 1, characterized in that: The upper end of the first sliding block (2) is in the shape of a regular hexagonal prism, and the head of the limiting rod (4) is provided with a hexagonal groove.

6. A highly adaptable flexible adjustable omnidirectional buffer docking rod under aircraft disturbance according to any one of claims 1 to 5, characterized in that: The buffer mechanism comprises a movable rod (8), the movable rod (8) being connected to a connecting tube (5) via a connecting bolt (13), a movable cylinder (9) being frictionally connected to the movable rod (8), an inner wall of the movable cylinder (9) being frictionally connected to an outer wall of the movable rod (8), the movable cylinder (9) being connected to a guide rod (11) via a screw (12), and a compression spring (10) being provided between the movable rod (8) and the guide rod (11).

7. The highly adaptable flexible and adjustable omnidirectional buffer docking rod under aircraft disturbance according to claim 6, characterized in that: Both sides of the connecting tube (5) are cut with mounting step surfaces (17); the movable rod (8) and the corresponding part on the movable rod (8) are threadedly connected with a connecting bolt (13) arranged at the mounting step surface (17); the connecting bolt (13) connects the movable rod (8) and the movable cylinder (9) together through a nut (14) and a washer (15).

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