A cushioning device

Abstract

The application discloses a kind of buffer devices, including parallel arrangement of instrument support seat and instrument mounting seat, multiple buffer modules are equipped between the instrument support seat and instrument mounting seat, multiple the buffer module is connected in series and / or parallel connection;The buffer module includes compliant buffer assembly and energy absorption component, the compliant buffer assembly is used to store impact energy, and the energy absorption component is used to dissipate impact energy;The compliant buffer assembly includes upper rigid body, lower rigid body, and compliant mechanism connected between upper rigid body and lower rigid body, the upper rigid body is used to be connected with the lower rigid body of adjacent buffer module or instrument mounting seat, and the lower rigid body is used to be connected with the upper rigid body of adjacent buffer module or instrument support seat.The buffer device of the application has the advantages of simple structure, compact, high reset accuracy, easy to process, disassembly and assembly, and strong applicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of buffer damping device, in particular to a buffer device. BACKGROUND

[0002] During the launch of the aircraft, the high-pressure gas in the bore drives the aircraft to accelerate forward, at the same time, the high-pressure gas also acts on the bottom of the aircraft to drive the aircraft to accelerate backward, i.e. the rearward movement, which generates the rearward force on the support body of the aircraft. If the rearward force of the aircraft is not intervened, the excessive rearward force may damage the support body of the aircraft, such as the connecting shaft, bearing, aircraft support or motor and speed reducer of the electromechanical system, so that the support effect is lost, and further the combat effectiveness of the aircraft is lost. Therefore, by installing the buffer device between the aircraft and the support body, the rearward force transmitted to the support body of the aircraft is reduced and delayed, so as to achieve the protection effect of the support body of the aircraft.

[0003] At present, the spring or the compliant mechanism is usually used as the main body of the buffer device. The buffer device using the spring as the main body has many components and complex structure, which specifically includes the guide rod, tightening bolt, support body fixing seat, rearward device mounting seat, pin shaft, copper ring and other main structural parts. In the buffering process, the guide deviation is reduced by relying on the guide rod and sliding rail, and the reset accuracy cannot be effectively guaranteed due to factors such as friction and assembly gap.

[0004] In order to meet the bearing requirement or the pointing accuracy requirement of the buffer device, the existing buffer device based on the compliant mechanism is composed of a large number of compliant straight beams in series and / or parallel, and the buffer device is designed in an integrated manner with the device mounting cradle. The volume and mass of the buffer device are large, and it is not convenient to adjust the stiffness and stroke of the buffer device, so the applicability is poor. Moreover, the rearward impact energy is dissipated by relying on the friction of the guide block or the external hydraulic damper, which increases the weight of the equipment and is not conducive to the overall integration design of the device, increases the volume and weight of the buffer device, and cannot realize the lightweight requirement. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a buffer device which is simple and compact in structure, high in reset accuracy, convenient to process and disassemble, and strong in applicability

[0006] To solve the above technical problems, the present application adopts the following technical scheme:

[0007] A buffer device, comprising an instrument support seat and an instrument mounting seat arranged in parallel, a plurality of buffer modules are arranged between the instrument support seat and the instrument mounting seat, and the plurality of buffer modules are connected in series and / or parallel.

[0008] The buffer module comprises a compliant buffer assembly for storing impact energy and an energy absorption assembly for dissipating impact energy.

[0009] The compliant buffer assembly comprises an upper rigid body, a lower rigid body, and a compliant mechanism connected between the upper rigid body and the lower rigid body, the upper rigid body being used to be connected with an instrument mounting seat or a lower rigid body of an adjacent buffer module, and the lower rigid body being used to be connected with an instrument support seat or an upper rigid body of an adjacent buffer module.

[0010] As a further improvement of the above technical solution:

[0011] The energy absorption assembly comprises an energy-absorbing piece made of a viscoelastic material.

[0012] The compliant mechanism comprises a plurality of compliant beams, and the energy-absorbing piece is filled in a buffer space formed between the compliant beams.

[0013] The upper rigid body and the lower rigid body are respectively provided with the compliant beams on two sides thereof, the compliant beams on the side of the upper rigid body are connected with the compliant beams on the corresponding side of the lower rigid body, and the buffer space is formed by the compliant beams, the upper rigid body and the lower rigid body.

[0014] The upper rigid body and the lower rigid body are respectively provided with threaded holes.

[0015] A plurality of the buffer modules are provided, the lower rigid body of the buffer module is connected with the upper rigid body of an adjacent buffer module to connect the plurality of buffer modules in series, the upper rigid body of a first buffer module is connected with an instrument mounting seat, and the lower rigid body of a last buffer module is connected with an instrument support seat.

[0016] A plurality of the buffer modules are provided, the plurality of buffer modules are arranged at intervals, the upper rigid body of each buffer module is connected with an instrument support seat, and the lower rigid body is connected with an instrument mounting seat to connect the plurality of buffer modules in parallel.

[0017] The connecting line direction of the upper rigid body and the lower rigid body is perpendicular to the plane where the instrument support seat is located.

[0018] The connecting line direction of the upper rigid body and the lower rigid body is parallel to the plane where the instrument support seat is located.

[0019] The instrument support seat is provided with a mounting groove, and the buffer module is embedded in the mounting groove.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] Compared with the technical solution of adopting a spring as the main body for buffering, the buffer device has the advantages of fewer components, simple and compact structure, low cost, no gap and friction, and high reset accuracy.

[0022] The buffer device has the advantages that the energy-absorbing member is made of a viscoelastic material, when the compliant mechanism deforms, impact energy is conducted to the energy-absorbing member through the compliant mechanism, the energy-absorbing member generates compression, stretching and shearing deformation to consume impact energy due to the damping property of the viscoelastic material, and the buffer device can realize dissipation of impact energy without an external damper, thereby having a simple and compact structure and reducing the volume of the buffer device.

[0023] The buffer device has the advantages that, when buffering, the compliant beams deform to drive the deformation of the buffer space, so that the energy-absorbing member in the buffer space generates compression, stretching and shearing deformation to buffer; the energy-absorbing member is filled in the buffer space, the space between the compliant beams can be fully utilized, and the damping effect of the energy-absorbing member can be enhanced due to the full filling of the energy-absorbing member in the buffer space, so that the energy-absorbing member can more easily generate compression, stretching and shearing deformation, impact energy is more easily consumed, and the buffering effect is better.

[0024] The buffer device has the advantages that each buffer module is connected to the instrument support seat and the instrument mounting seat independently, so that parallel connection of multiple buffer modules can be realized, the parallel connection process is simple and reliable, compared with the technical solution of buffering by a single buffer module, the stiffness is increased, the stroke is unchanged, the buffer requirements in more application scenarios can be met, and the applicability is strong.

[0025] The buffer device has the advantages that different parallel connection modes of the buffer modules can cope with impact forces in different directions on the instrument mounting frame, and the adaptability is strong.

[0026] The buffer device can also combine multiple buffer modules in a combination of series connection and parallel connection, that is, multiple buffer module groups are connected in parallel, and each buffer module group is connected in series, so that the buffer modules can be combined in series connection and parallel connection, and the applicability is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of a buffer module in the buffer device.

[0028] Figure 2is the front view of a buffering module in the buffering device of the present application.

[0029] Figure 3 is the structural schematic view of a compliant buffering assembly in the buffering device of the present application.

[0030] Figure 4 is the schematic view of the compliant buffering assembly in different deformations.

[0031] Figure 5 is the structural schematic view of an energy absorbing assembly in the buffering device of the present application.

[0032] Figure 6 is the structural schematic view of the buffering device of the first embodiment of the present application.

[0033] Figure 7 is the structural schematic view of the buffering device of the second embodiment of the present application.

[0034] Figure 8 is the structural schematic view of the buffering device of the third embodiment of the present application.

[0035] Figure 9 is the structural schematic view of the buffering device of the fourth embodiment of the present application.

[0036] In the figure, the numbers represent: 1, compliant buffering assembly; 11, upper rigid body; 111, threaded hole; 12, lower rigid body; 13, compliant mechanism; 131, compliant beam; 14, buffering space; 2, energy absorbing assembly; 3, instrument support seat; 31, mounting groove; 4, instrument mounting seat; 5, connecting plate. DETAILED DESCRIPTION

[0037] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection", "link", "fixation" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] Embodiment one:

[0042] Figures 1 to 6 An embodiment of the buffer device of the application is shown, the buffer device of the embodiment includes an instrument support seat 3 and an instrument mounting seat 4 arranged in parallel, a plurality of buffer modules are arranged between the instrument support seat 3 and the instrument mounting seat 4, and the plurality of buffer modules are connected in series;

[0043] The buffer module includes a compliant buffer assembly 1 and an energy absorption assembly 2, the compliant buffer assembly 1 is used to store impact energy, and the energy absorption assembly 2 is used to dissipate impact energy;

[0044] The compliant buffer assembly 1 includes an upper rigid body 11, a lower rigid body 12, and a compliant mechanism 13 connected between the upper rigid body 11 and the lower rigid body 12, the upper rigid body 11 is used to be connected with the instrument mounting seat 4 or the lower rigid body 12 of an adjacent buffer module, and the lower rigid body 12 is used to be connected with the instrument support seat 3 or the upper rigid body 11 of an adjacent buffer module.

[0045] The buffer device of the embodiment, the instrument is installed on the instrument mounting seat 4, the instrument support seat 3 is connected with the device support body, a plurality of buffer modules are connected in series between the instrument support seat 3 and the instrument mounting seat 4, when buffering, the instrument generates impact, the impact energy of the instrument is transmitted to the compliant buffer assembly 1 of the buffer module, the upper rigid body 11 and the lower rigid body 12 of the compliant mechanism 13 are relatively moved, and the impact energy is stored by the deformation of the compliant mechanism 13, and then the impact energy stored in the compliant mechanism 13 is dissipated by the energy absorption assembly 2, so that the impact is buffered, and the buffered impact force is transmitted to the instrument support body through the instrument support seat 3. The buffer device of the embodiment stores and dissipates the impact energy through the compliant buffer assembly 1 and the energy absorption assembly 2, compared with the technical solution of using a spring as the main body for buffering, the number of parts is small, the structure is simple and compact, the cost is low, there is no gap and friction, and the reset accuracy is high; the upper rigid body 11 of the buffer module is connected with the lower rigid body 12 of the adjacent buffer module, a plurality of buffer modules can be connected in series, and the modular degree is high, which is convenient for processing; through the modular combination mode, the combination and decomposition are simple, and the buffer device is convenient to disassemble and assemble, and different numbers of buffer modules can be connected in series according to requirements, compared with the technical solution of buffering by a single buffer module, the stiffness is reduced, the stroke is increased, the buffering requirements in more application scenarios can be met, and the applicability is high.

[0046] Further, as shown in Figure 6 In the embodiment, two buffer modules are provided, the lower rigid body 12 of the buffer module is connected with the upper rigid body 11 of the adjacent buffer module to connect the two buffer modules in series, the upper rigid body 11 of the first buffer module is connected with the instrument mounting seat 4, and the lower rigid body 12 of the last buffer module is connected with the instrument support seat 3. The lower rigid body 12 of the buffer module is connected with the upper rigid body 11 of the adjacent buffer module, so that the two buffer modules are connected in series, and the connection process is simple and reliable. The buffer device composed of the two buffer modules in series has a stiffness of 0.5 times that of a single buffer module and a stroke of 2 times that of a single buffer module. Of course, in other embodiments, more buffer modules can be connected in series by the mode of the embodiment, and the application range is wider.

[0047] Further, in the embodiment, the energy absorption assembly 2 includes an energy absorption piece made of a viscoelastic material (such as rubber, elastic cement or polymer gel).

[0048] Further, as shown in Figure 3As shown, in the embodiment, the compliant mechanism 13 includes a plurality of compliant beams 131, and a buffer space 14 is formed between the plurality of compliant beams 131, and the energy-absorbing member is filled in the buffer space 14. During buffering, the compliant beams 131 are deformed, the buffer space 14 is deformed, and thus the energy-absorbing member in the buffer space 14 is deformed in compression, tension and shear to buffer. The energy-absorbing member is filled in the buffer space 14, and the space between the compliant beams 131 can be fully utilized. Since the energy-absorbing member is filled in the buffer space 14, the damping effect of the energy-absorbing member can be enhanced, the energy-absorbing member can be more easily deformed in compression, tension and shear, the impact energy can be more easily consumed, and the buffering effect is better.

[0049] Preferably, in the embodiment, the compliant beam 131 is a rectangular compliant beam, and of course, in other embodiments, it can also be a curved compliant beam. By changing the material and geometric parameters of the compliant beam 131, the stiffness of the compliant beam 131 can be adjusted, and further, the stiffness of the compliant buffering assembly 1 can be accurately designed.

[0050] Further, in the embodiment, the upper rigid body 11 and the lower rigid body 12 are respectively provided with compliant beams 131 on two sides, the compliant beam 131 on the side of the upper rigid body 11 is connected with the compliant beam 131 on the corresponding side of the lower rigid body 12, and the buffer space 14 is formed by the compliant beams 131, the upper rigid body 11 and the lower rigid body 12. The compliant beams 131 are provided with four, two of which are arranged on the two sides of the upper rigid body 11, and the other two are arranged on the two sides of the lower rigid body 12. The compliant beam 131 on the left side of the upper rigid body 11 is connected with the compliant beam 131 on the left side of the lower rigid body 12, and the compliant beam 131 on the right side of the upper rigid body 11 is connected with the compliant beam 131 on the right side of the lower rigid body 12. That is, the upper rigid body 11 and the compliant beams 131 on its two sides form a symmetrical structure with the lower rigid body 12 and the compliant beams 131 on its two sides. The four compliant beams 131, the upper rigid body 11 and the lower rigid body 12 constitute a parallelogram frame, and the space inside the parallelogram frame is the buffer space 14. The structure is simple and compact.

[0051] In the embodiment, the compliant buffering assembly 1 (four compliant beams 131, the upper rigid body 11 and the lower rigid body 12) is integrally processed by wire cutting, has high cutting precision, and can improve the consistency of each buffering module.

[0052] Further, in the embodiment, the upper rigid body 11 and the lower rigid body 12 are respectively provided with threaded holes 111. The upper rigid body 11 and the lower rigid body 12, the upper rigid body 11 and the instrument mounting seat 4, and the lower rigid body 12 and the instrument supporting seat 3 can be connected by threads. The structure is simple, reliable, easy to disassemble and assemble, and convenient for modular combination of the buffering module. Of course, in other embodiments, buckle connection, key pin connection and other detachable connection modes can also be selected. Specifically, the upper rigid body 11 and the lower rigid body 12 are connected by a connecting plate 5, and the structure is simple and reliable.

[0053] Embodiment two:

[0054] Figure 7 A second embodiment of the buffer device of the present application is shown, and the buffer device of this embodiment is basically the same in structure as the buffer device of embodiment one, and the differences include:

[0055] In this embodiment, multiple buffer modules are connected in parallel, and two buffer modules are provided, and the two buffer modules are arranged at intervals, and the upper rigid body 11 of each buffer module is connected with the instrument support seat 3, and the lower rigid body 12 is connected with the instrument mounting seat 4 to connect multiple buffer modules in parallel. By connecting each buffer module with the instrument support seat 3 and the instrument mounting seat 4 separately, the parallel connection of multiple buffer modules can be realized, and the parallel connection process is simple and reliable, the stiffness is increased, the stroke is unchanged, and the buffer requirements in more application scenarios can be met, and the applicability is strong. The buffer device composed of two buffer modules in parallel has a stiffness that is twice that of a single buffer module and a stroke that is one times that of a single buffer module. Of course, in other embodiments, more buffer modules can be connected in parallel in the manner of this embodiment, and the application range is wider.

[0056] In this embodiment, the connecting line direction of the upper rigid body 11 and the lower rigid body 12 is parallel to the plane where the instrument support seat 3 is located, that is, each buffer module is "top-to-top parallel", which can buffer the horizontal impact force borne by the instrument mounting rack 4.

[0057] Further, in this embodiment, the instrument support seat 3 is provided with a mounting groove 31, and the buffer module is embedded in the mounting groove 31. Embedding and installing the buffer module in the mounting groove 31 can further reduce the volume of the buffer device and make the structure more compact.

[0058] Embodiment three:

[0059] Figure 8 A third embodiment of the buffer device of the present application is shown, and the buffer device of this embodiment is basically the same in structure as the buffer device of embodiment two, and the differences include:

[0060] In this embodiment, four buffer modules are provided, and the four buffer modules are arranged at intervals, and the upper rigid body 11 of each buffer module is connected with the instrument support seat 3, and the lower rigid body 12 is connected with the instrument mounting seat 4. Specifically, two buffer modules are arranged as a group and are arranged at both ends of the instrument support seat 3. The buffer device composed of four buffer modules in parallel has a stiffness that is four times that of a single buffer module and a stroke that is one times that of a single buffer module.

[0061] Embodiment four:

[0062] Figure 9A fourth embodiment of the buffer device of the present application is shown, and the buffer device of this embodiment is basically the same as the buffer device of embodiment two, and the differences include:

[0063] In this embodiment, the connecting line direction of the upper rigid body 11 and the lower rigid body 12 is perpendicular to the plane where the equipment support seat 3 is located, i.e., each buffer module is "vertically connected in parallel", and the vertical impact force borne by the equipment mounting rack 4 can be buffered. Through different parallel connection modes of each buffer module, different direction impact forces borne by the equipment mounting rack 4 can be coped with, and the adaptability is strong.

[0064] In other embodiments, a combination of multiple buffer modules in series and parallel connection can also be used, i.e., multiple buffer module groups are connected in parallel in the manner of embodiment two or embodiment four, and each buffer module group is connected in series with multiple buffer modules in the manner of embodiment one, so that the combination of multiple buffer modules in series and parallel connection can be realized, and the applicability is stronger.

[0065] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solutions of the present application, or modify equivalent embodiments with the above disclosed methods and technical contents without departing from the spirit and technical solutions of the present application. Therefore, any simple modification, equivalent replacement, equivalent change and modification of the above embodiments according to the technical essence of the present application, which does not depart from the technical solutions of the present application, still belongs to the protection scope of the technical solutions of the present application.

Claims

1. A buffer device, characterized in that: It includes a parallel arrangement of an instrument support (3) and an instrument mounting base (4), and multiple buffer modules are provided between the instrument support (3) and the instrument mounting base (4), and the multiple buffer modules are connected in series and / or in parallel. The buffer module includes a compliant buffer component (1) and an energy absorption component (2). The compliant buffer component (1) is used to store impact energy, and the energy absorption component (2) is used to dissipate impact energy. The compliant buffer assembly (1) includes an upper rigid body (11), a lower rigid body (12), and a compliant mechanism (13) connecting the upper rigid body (11) and the lower rigid body (12). The upper rigid body (11) is used to connect with the instrument mounting base (4) or the lower rigid body (12) of an adjacent buffer module, and the lower rigid body (12) is used to connect with the instrument support base (3) or the upper rigid body (11) of an adjacent buffer module. The energy absorption component (2) includes an energy-absorbing element, which is made of a viscoelastic material; The compliant mechanism (13) includes multiple compliant beams (131), and a buffer space (14) is formed between the multiple compliant beams (131), and the energy-absorbing element is filled in the buffer space (14); The upper rigid body (11) and the lower rigid body (12) are respectively provided with the flexible beams (131) on both sides. The flexible beams (131) on the side of the upper rigid body (11) are connected to the flexible beams (131) on the corresponding side of the lower rigid body (12). The buffer space (14) is formed by the flexible beams (131), the upper rigid body (11) and the lower rigid body (12).

2. The buffer device according to claim 1, characterized in that: Both the upper rigid body (11) and the lower rigid body (12) are provided with threaded holes (111).

3. The buffer device according to claim 1 or 2, characterized in that: The buffer module is provided in multiple ways. The lower rigid body (12) of the buffer module is connected to the upper rigid body (11) of the adjacent buffer module to connect multiple buffer modules in series. The upper rigid body (11) of the first buffer module is connected to the instrument mounting base (4), and the lower rigid body (12) of the last buffer module is connected to the instrument support base (3).

4. The buffer device according to claim 1 or 2, characterized in that: The buffer module is provided in multiple ways, and the multiple buffer modules are arranged at intervals. The upper rigid body (11) of each buffer module is connected to the instrument support seat (3), and the lower rigid body (12) is connected to the instrument mounting seat (4) to connect multiple buffer modules in parallel.

5. The buffer device according to claim 4, characterized in that: The line connecting the upper rigid body (11) and the lower rigid body (12) is perpendicular to the plane of the instrument support seat (3).

6. The buffer device according to claim 4, characterized in that: The line connecting the upper rigid body (11) and the lower rigid body (12) is parallel to the plane containing the instrument support (3).

7. The buffer device according to claim 4, characterized in that: The instrument support (3) is provided with a mounting groove (31), and the buffer module is embedded in the mounting groove (31).

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