Switching structure

Abstract

The invention discloses a switching structure, relates to the technical field of spaceflight power final assembly design, and aims to solve the problem that a profile spectrum damper and a profile spectrum storage tank are not easy to directly match and mount. According to the switching structure, a first through hole and a second through hole which are coaxially and fixedly connected with a mounting hole of a storage box lug piece are formed in a switching piece, and the first through hole and the second through hole are formed in a spaced mode; the two vibration reduction pieces are both coaxial with the second through hole, and the two vibration reduction pieces are oppositely arranged at the two ends of the second through hole correspondingly. A groove is formed in the mounting frame, a third through hole coaxial with the second through hole is formed in the bottom of the groove, and the adapter is located in the groove; and the fastening piece sequentially penetrates through the third through hole, one vibration reduction piece, the adapter piece and the other vibration reduction piece and is used for connecting and fixing the adapter piece, the vibration reduction pieces and the mounting frame. The first through hole and the second through hole of the adapter piece are respectively connected with the lug piece of the storage tank and the vibration reduction piece, and then the vibration reduction piece, the adapter piece and the mounting frame are fixedly connected through the fastening piece, so that the storage tank and the vibration damper can be indirectly assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace power assembly design, and particularly relates to an adapter structure. Background Art

[0002] As a pressure vessel, the function of a storage tank is to store and manage liquid propellants, and it is one of the important components of the power system of a spacecraft. Existing storage tanks can be divided into surface tension storage tanks, bladder tanks, metal diaphragm storage tanks, rubber-plastic composite semi-membrane storage tanks, etc. Different types of storage tanks are applicable to different load environments due to their different structural characteristics.

[0003] At present, the design of various shock absorbers has been very mature, and the design schemes of shock absorbers have also been serialized and spectralized. Usually, for a certain storage tank, the size of the selected shock absorber product on the shelf is often difficult to accurately match and cannot be directly installed. If the installation size of either the storage tank or the shock absorber is adjusted, special modification and testing are required, resulting in a long research and production cycle and high costs. Summary of the Invention

[0004] The purpose of the present invention is to provide an adapter structure for facilitating the matching of a shock absorber with storage tanks of different installation sizes.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An adapter structure, comprising:

[0006] An adapter, provided with a first through hole and a second through hole, the first through hole and the second through hole are spaced apart, and the first through hole is used for coaxial fixed connection with the mounting hole of the upper lug on the storage tank;

[0007] Two shock absorber members, both coaxially arranged with the second through hole, and the two shock absorber members are respectively oppositely arranged on the two end faces of the second through hole;

[0008] A mounting bracket, provided with a groove, and a third through hole is opened at the bottom of the groove, the adapter is located in the groove, and the third through hole is coaxially arranged with the second through hole;

[0009] A fastener, sequentially passing through the third through hole, one of the shock absorber members, the adapter, and the other shock absorber member, and the fastener is used for connecting and fixing the adapter and the mounting bracket.

[0010] Optionally, in the above adapter structure, the adapter has an internal cavity, the first through hole is located on the top surface of the internal cavity, the second through hole is located on the bottom surface of the internal cavity, and the axis of the first through hole is parallel to the axis of the second through hole;

[0011] Or, the first through hole and the second through hole are coaxially arranged.

[0012] Optionally, in the above adapter structure, the cross-sectional shape of the adapter includes a U-shaped or a square-shaped.

[0013] Optionally, in the above-mentioned adapter structure, the adapter is a flat plate, and the first through hole and the second through hole are both opened on the plate surface of the flat plate.

[0014] Optionally, in the above-mentioned transition structure, the center of the first through hole, the center of the second through hole and the center of the tank are collinear on the same plane; or, an angle α is formed between the extension direction of the line connecting the center of the first through hole and the center of the second through hole on the same plane and the radial direction of the tank.

[0015] Optionally, in the above-mentioned transition structure, the range of the angle α includes 0° to 15°.

[0016] Optionally, in the above-mentioned transition structure, the extending direction of the line connecting the center of the first through hole and the center of the second through hole on the same plane is tangentially parallel to the outer edge of the tank;

[0017] Alternatively, an angle β is formed between an extension direction of a line connecting the center of the first through hole and the center of the second through hole on the same plane and a tangent direction of an outer edge of the tank.

[0018] Optionally, in the above-mentioned transition structure, the range of the angle β includes 0° to 15°.

[0019] Optionally, in the above transition structure, the material of the transition piece includes aluminum alloy and / or titanium alloy.

[0020] Optionally, in the above-mentioned transition structure, the fastener includes a first screw and a self-locking nut, one end of the first screw passes through the third through hole, one of the vibration damping parts, the transition part and the other vibration damping part in sequence, and the self-locking nut is cooperatively connected with the bolt.

[0021] Optionally, the above-mentioned transition structure further includes an anti-loosening component, and the anti-loosening component covers the threaded surface of the first screw.

[0022] Optionally, in the above-mentioned transition structure, the anti-loosening component includes anaerobic adhesive.

[0023] Compared with the prior art, when the above technical solution is adopted, the operator places the mounting hole on the ear piece of the tank coaxially with the first through hole on the adapter and then fixes them together, and then passes the fastener through the third through hole on the mounting frame, one of the vibration dampers, the second through hole on the adapter and the other vibration damper in sequence and then fastens them together. The two vibration dampers are respectively arranged at the two ends of the second through hole and partially embedded in the second through hole, so that tanks of different sizes can be directly assembled with the vibration damper through the adapter and fixed on the mounting frame, which is convenient for installation and disassembly. Compared with the traditional method of directly installing and matching the tank and the shock absorber, the present application only needs to design and adjust the spacing, aperture and other dimensions of the first through hole and the second through hole on the adapter, so as to realize the indirect assembly of the spectroscopic tank and the shock absorber through the adapter, and fix it on the mounting frame, which is convenient for installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] In the attached picture:

[0026] Figure 1 A schematic structural diagram of a transition structure provided in an embodiment of the present invention during axial transition;

[0027] Figure 2 for Figure 1 Top view after installation;

[0028] Figure 3 for Figure 2 Middle AA section view;

[0029] Figure 4 A schematic diagram of the structure of a switching structure provided in an embodiment of the present invention during radial switching;

[0030] Figure 5 for Figure 4 Top view after installation;

[0031] Figure 6 for Figure 5 Middle BB section view;

[0032] Figure 7 A schematic structural diagram of a switching structure provided in an embodiment of the present invention during tangential switching;

[0033] Figure 8 for Figure 7 Top view after installation;

[0034] Fig. 9 for Figure 8Middle CC section view.

[0035] Reference numerals:

[0036] 1-adapter; 11-first through hole; 12-second through hole; 13-second screw; 2-vibration damper; 3-mounting frame; 31-first groove; 32-third through hole; 33-weight reduction groove; 4-fastener; 41-first screw; 42-self-locking nut; 5-tank; 51-ear; 52-mounting hole. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] like Figure 1-Figure 9 As shown, an adapter structure provided by an embodiment of the present invention includes: an adapter 1, two vibration-damping components 2, a mounting frame 3 and a fastener 4.

[0043] Among them, the adapter 1 is provided with a first through hole 11 and a second through hole 12, and the first through hole 11 and the second through hole 12 are arranged at intervals. The first through hole 11 is used to be coaxially fixedly connected with the mounting hole 52 of the ear piece 51 on the storage tank 5; the two vibration dampers 2 are coaxially arranged with the second through hole 12, and the two vibration dampers 2 are respectively arranged at the two ends of the second through hole 12 and partially embedded in the through hole; the mounting frame 3 is provided with a groove, and a third through hole 32 is opened at the bottom of the groove. The adapter 1 is located in the groove, and the third through hole 32 is coaxially arranged with the second through hole 12; the fastener 4 passes through the third through hole 32, one of the vibration dampers 2, the adapter 1 and the other vibration damper 2 in sequence, and the fastener 4 is used to connect and fix the adapter 1, the vibration damper 2 and the mounting frame 3.

[0044] When implementing it, Figure 1 As shown, the operator places the mounting hole 52 on the ear piece 51 of the tank 5 coaxially with the first through hole 11 on the adapter 1 and then fixes them together, and then sequentially passes the fastener 4 through the third through hole 32 on the mounting frame 3, one of the vibration dampers 2, the second through hole 12 on the adapter 1 and the other vibration damper 2 and then fastens them together, so that tanks 5 of different sizes can be directly assembled with the vibration damper 2 through the adapter 1 and fixed on the mounting frame 3, which is convenient for installation and disassembly. Compared with the traditional method of directly installing and matching the tank 5 with the shock absorber, the present application only needs to design and adjust the spacing, aperture and other dimensions of the first through hole 11 and the second through hole 12 on the adapter 1, so that the indirect assembly of the type-spectrum tank 5 and the vibration damper 2 can be realized through the adapter 1, and fixed on the mounting frame 3, which is convenient for installation and disassembly.

[0045] It should be noted that if Figure 1-Figure 9 As shown in the figure, the main body of the tank 5 is a (quasi) rotating body structure, and its installation form is an ear piece fixing form; wherein, the direction D indicated by the arrow is the axial direction of the tank 5, the direction E indicated by the arrow is the radial direction of the tank 5, and the direction F indicated by the arrow is the tangential direction of the edge of the tank 5; the two vibration dampers 2 are two structural parts of the same split vibration damper. When working, the adapter 1 is located between the upper structure and the lower structure of the split vibration damper. When the axial assembly structure space of the tank 5 is sufficient and the radial and tangential assembly structure space is insufficient, the following method is adopted. Figure 1-Figure 3 The transfer structure shown in the figure is installed, wherein the general assembly structure space refers to the structure space for arranging other products around the storage tank 5; when the radial general assembly structure space of the storage tank 5 is sufficient and the axial and tangential general assembly structure space is insufficient, the following is adopted Figure 4-Figure 6Install the adapter structure shown; when the overall assembly structure space along the tangential direction of the storage tank 5 is spacious, but the overall assembly structure space in its axial and radial directions is insufficient, use the adapter structure as shown in Figure 7-Figure 9 for installation. In addition, the lugs 51 of the storage tank 5 can be provided with 3 to 8, which is not limited herein, as long as the number of the adapters 1 is the same as the number of the lugs 51 of the storage tank 5.

[0046] As shown in Figure 1 , specifically, in this embodiment, the adapter 1 has an internal cavity. The first through hole 11 is located on the top surface of the internal cavity, and the second through hole 12 is located on the bottom surface of the internal cavity. The axis of the first through hole 11 and the axis of the second through hole 12 are parallel or coaxial. The internal cavity provides an installation space for the lugs 51 and the vibration damping members 2, ensuring that the axis of the first through hole 11 and the axis of the second through hole 12 are parallel or coaxial, so that the two vibration damping members 2 and the adapter 1 are all arranged in the axial direction of the storage tank 5, that is, the axial directions of the first through hole 11 and the second through hole 12 are parallel to the axis of the storage tank 5, enabling the adapter 1 to be applicable to the situation where the overall assembly structure space along the axis of the storage tank 5 is spacious, but the overall assembly structure space in its radial and tangential directions is insufficient.

[0047] Specifically, in this embodiment, the cross-sectional shape of the adapter 1 includes a C-shaped or a rectangular-shaped. Among them, the cross-sectional shape of the adapter 1 can be C-shaped, rectangular-shaped or other shapes, which is not specifically limited herein, as long as the adapter 1 has an internal cavity that can satisfy the parallel or coaxial arrangement of the axis of the first through hole 11 and the axis of the second through hole 12.

[0048] As shown in Figure 4 and Figure 7 , specifically, in this embodiment, the adapter 1 is a flat plate, and both the first through hole 11 and the second through hole 12 are opened on the plate surface of the flat plate. The adapter 1 can be a flat plate or other structures, which is not specifically limited herein, as long as the adapter 1 has a plane on which the first through hole 11 and the second through hole 12 can be opened, facilitating the placement of the lugs 51 of the storage tank 5 and the vibration damping members 2 on the plate surface of the flat plate, enabling the adapter 1 to be applicable to the situation where the overall assembly structure space along the radial direction of the storage tank 5 is spacious, but the overall assembly structure space in its axial and tangential directions is insufficient, as well as the situation where the overall assembly structure space along the tangential direction of the storage tank 5 is spacious, but the overall assembly structure space in its axial and radial directions is insufficient.

[0049] As shown in Figure 4 and Figure 5As shown, specifically, in this embodiment, the center of the first through hole 11, the center of the second through hole 12 and the center of the tank 5 are collinear on the same plane; or, the extending direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 on the same plane forms an angle α with the radial direction of the tank 5. That is, the extending direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 can be collinear with the radial direction of the tank 5 or form an angle α, so that the adapter 1 can be used in the case where the radial assembly structure space of the tank 5 is sufficient, but the axial and tangential assembly structure space is insufficient.

[0050] Specifically, in this embodiment, the angle α ranges from 0° to 15°. For example, when the angle α is 0°, the extension direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 is parallel or collinear with the radial direction of the tank 5. Of course, the angle α can also be 3°, 8°, 10°, 15°, etc., and the angle α is not specifically limited here. It should be noted that, on the same plane, the angle α formed by the extension direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 and the radial direction of the tank 5 can be located on the left side of the radial direction of the tank 5, or on the right side of the radial direction of the tank 5, and is not specifically limited here.

[0051] like Figure 7 and Figure 8 As shown, specifically, in this embodiment, the extending direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 on the same plane is parallel to the tangent direction of the outer edge of the tank 5; or, the extending direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 on the same plane forms an angle β with the tangent direction of the outer edge of the tank 5. That is, the extended line of the line connecting the center of the first through hole 11 and the center of the second through hole 12 on the same plane is perpendicular to the radial extension line of the tank 5, or the angle formed is an acute angle or an obtuse angle, so that the adapter 1 can be used in the case where the tangential assembly structure space of the tank 5 is sufficient, but the axial and radial assembly structure space is insufficient.

[0052] Specifically, in the present embodiment, the range of the angle β includes 0° to 15°. For example, when the angle β is 0°, that is, the extension direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 is parallel to the tangent of the outer edge of the tank 5, and the extension direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 on the same plane is perpendicular to the radial direction of the tank 5; of course, the angle β can also be 3°, 8°, 10°, 15°, etc., and the angle of the angle β is not specifically limited here. It should be noted that the extension direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 can be offset toward the center of the tank 5; or the extension direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 is offset away from the center of the tank 5, that is, on the same plane, the angle β between the extension direction of the line connecting the center of the first through hole 11 and the center of the second through hole 12 and the tangent of the outer edge of the tank 5 can be located on the left side of the tangent of the outer edge of the tank 5, or on the right side of the tangent of the outer edge of the tank 5, and is not specifically limited here.

[0053] Specifically, in this embodiment, the mounting frame 3 is further provided with a weight-reducing groove 33. The groove depth of the weight-reducing groove 33 is h, and the groove depth of the first groove 31 is H. Figure 1 As shown, in some embodiments, the groove depth h of the weight-reducing groove 33 is less than or equal to the groove depth H of the first groove 31, that is, h≤H. The groove depth h of the weight-reducing groove 33 is not specifically limited, as long as the mounting frame 3 meets the support requirements; Figure 4 and Figure 7 As shown, in other embodiments, the groove depth h of the weight reducing groove 33 can be greater than the groove depth H of the first groove 31, that is, h>H. The groove depth h of the weight reducing groove 33, the opening shape of the weight reducing groove 33 and the opening position of the weight reducing groove 33 are not specifically limited, as long as the mounting frame 3 meets the support requirements.

[0054] like Figure 1 , Figure 4 and Figure 7 As shown, specifically, in this embodiment, the sum of the height of the adapter 1 and the height of one of the vibration dampers 2 is less than or equal to the groove depth of the first groove 31. Among them, the height of the adapter 1 is M, and the height of one of the vibration dampers 2 is N, that is, M+N≤H. In this way, the upper surface of the adapter 1 can be installed in coordination with the ear piece 51 of the tank 5, reducing the connection gap between the structures and ensuring the connection reliability and stability of the adapter structure.

[0055] Specifically, in this embodiment, the material of the adapter 1 includes aluminum alloy and / or titanium alloy. Both aluminum alloy and titanium alloy have high strength, can withstand high load and high stress, and have the advantages of light weight, good corrosion resistance and high temperature stability. Of course, the adapter 1 can also be made of other materials, which are not specifically limited here, as long as the normal operation of the adapter 1 can be guaranteed, reducing the structural quality of the assembly.

[0056] like Figure 1 , Figure 4 and Figure 7 As shown, specifically, in this embodiment, the fastener 4 includes a first screw 41 and a self-locking nut 42, one end of the first screw 41 passes through the third through hole 32, one of the vibration dampers 2, the adapter 1 and the other vibration damper 2 in sequence, and the self-locking nut 42 is connected with the bolt. The adapter 1 is connected and fastened to the mounting frame 3 by the self-locking nut 42 and the first screw 41, ensuring the reliability and stability of the connection between the structures.

[0057] like Figure 1 As shown, specifically, in this embodiment, the adapter structure also includes a second screw 13, and the second screw 13 passes through the mounting hole 52 and the first through hole 11 in sequence, and the second screw 13 is used to connect and fix the ear piece 51 and the adapter 1. Among them, the connection and fixation of the ear piece 51 and the adapter 1 can also be achieved by plugging, welding or other methods that can achieve fixed connection, which are not specifically limited here, as long as the fixed connection between the ear piece 51 and the adapter 1 can be guaranteed. In addition, when installing the second screw 13, spring washers and flat washers can also be set; and / or, spring washers and flat washers are installed between the first screw 41 and the self-locking nut 42. The function of the spring washers is to prevent the screws from loosening under a vibration environment, and the function of the flat washers is to eliminate the damage to the surface of the structure caused by the spring washers during disassembly, which can reduce the compressive stress on the pressure-bearing surface of the connected parts and ensure the reliability and stability of the connection between the structures.

[0058] Specifically, in this embodiment, the transition structure further includes other anti-loosening parts, which cover the inner wall of the first through hole 11, the inner wall of the second through hole 12, the inner wall of the third through hole 32, and the inner wall of the mounting hole 52. The inner wall of the first through hole 11, the inner wall of the second through hole 12, the inner wall of the third through hole 32, and the inner wall of the mounting hole 52 are covered, and the gap at the threaded connection is filled by the anti-loosening parts, so as to improve the stability and reliability of the connection between the structures.

[0059] Preferably, in the transition structure, the anti-loosening member includes anaerobic adhesive. Anaerobic adhesive has strong adhesion and filling capacity, and can bond two or more materials in a short time. Of course, the anti-loosening member can also be other materials, which are not specifically limited here, as long as it can fill the gap between the thread surface and the inner wall of the hole, thereby improving the stability and reliability of the connection between the structures.

[0060] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A switching structure, characterized in that: Comprising: An adapter, provided with a first through-hole and a second through-hole, the first through-hole and the second through-hole being arranged at intervals, the first through-hole being used for coaxially and fixedly connecting with the mounting hole of the tank lug; Two damping members, both coaxially arranged with the second through-hole, and the two damping members being respectively oppositely arranged at both ends of the second through-hole; A mounting bracket, provided with a groove, a third through-hole being opened at the bottom of the groove, the adapter being located in the groove, and the third through-hole being coaxially arranged with the second through-hole; A fastener, sequentially passing through the third through-hole, one of the damping members, the adapter and the other damping member, the fastener being used for connecting and fixing the adapter, the damping member and the mounting bracket.

2. The switching structure according to claim 1, characterized in that: The adapter has an internal cavity, the first through-hole is located on the top surface of the internal cavity, the second through-hole is located on the bottom surface of the internal cavity, and the axis of the first through-hole is parallel to the axis of the second through-hole; Alternatively, the first through-hole and the second through-hole are coaxially arranged.

3. The switching structure according to claim 2, characterized in that: The cross-sectional shape of the adapter includes a C-shaped or a square-shaped.

4. The switching structure according to claim 1, characterized in that: The adapter is a flat plate, and the first through-hole and the second through-hole are both opened on the plate surface of the flat plate.

5. The switching structure according to claim 4, characterized in that: The centers of the first through-hole, the second through-hole and the center of the tank are collinear in the same plane; Alternatively, an included angle α is formed between the extending direction of the connection line between the centers of the first through-hole and the second through-hole and the radial direction of the tank in the same plane.

6. The switching structure according to claim 5, characterized in that: The range of the included angle α includes 0° to 15°.

7. The switching structure according to claim 4, characterized in that: The extending direction of the connection line between the centers of the first through-hole and the second through-hole is parallel to the tangential direction of the outer edge of the tank in the same plane; Alternatively, an included angle β is formed between the extending direction of the connection line between the centers of the first through-hole and the second through-hole and the tangential direction of the outer edge of the tank in the same plane.

8. The switching structure according to claim 7, characterized in that: The range of the included angle β includes 0° to 15°.

9. The switching structure according to any one of claims 1 to 4, characterized in that: The fastener includes a first screw and a self-locking nut, one end of the first screw sequentially passing through the third through-hole, one of the damping members, the adapter and the other damping member, and the self-locking nut being in mating connection with the bolt.

10. The switching structure according to claim 9, characterized in that: It further includes a lock prevention member, the lock prevention member covering the threaded surface of the first screw.

Images