A vibration isolation sandwich panel with high torsional rigidity

Abstract

The present invention relates to the technical field of vibration isolation materials, and discloses a vibration isolation sandwich panel with high torsional rigidity. The vibration isolation sandwich panel includes a core structure and a panel layer. The core structure includes a plurality of sandwich panel units stacked in sequence. Each sandwich panel unit includes a plurality of hollowed-out plates stacked in sequence. The hollowed-out plates are provided with a plurality of hollowed-out regions, and connecting ribs are formed between adjacent hollowed-out regions. After the plurality of hollowed-out plates are stacked, the connecting ribs of each adjacent two layers of hollowed-out plates are arranged in a staggered manner. Each connecting rib of the upper hollowed-out plate is suspended in the hollowed-out region of the lower hollowed-out plate, and each connecting rib of the lower hollowed-out plate is suspended in the hollowed-out region of the upper hollowed-out plate. Panel layers are provided on both sides of the core structure in the stacking direction of the sandwich panel units. The vibration isolation sandwich panel of the present invention can not only generate a sufficiently large elastic deformation longitudinally, have a good vibration isolation effect, but also have good anti-torsion ability, can prevent the coupling of longitudinal vibration and torsional vibration, and achieve single-direction vibration isolation.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration isolation materials, and particularly relates to a vibration isolation sandwich panel with high torsional rigidity. Background Art

[0002] In high-dynamic environments such as shipborne and airborne, the accuracy and stability of optoelectronic devices (such as optoelectronic turrets, laser aiming systems, etc.) are extremely vulnerable to the interference of carrier vibration. In particular, angular displacement disturbances have a great impact on the pointing accuracy and imaging quality of optoelectronic devices. For example, a small angular deviation of the laser beam will cause positioning errors in long-distance detection or guidance, seriously affecting the system performance.

[0003] In the related art, it is usually to design a vibration isolation system to reduce the interference of vibration on optoelectronic devices and the like. The vibration isolation system mostly adopts a spring-damping system or a parallel vibration isolator. Although the above solutions can attenuate longitudinal vibration to a certain extent, the torsional stiffness of the vibration isolation system is insufficient, and additional angular displacement is likely to occur under complex excitations, amplifying torsional disturbances and exacerbating the pointing deviation of optoelectronic devices.

[0004] Therefore, there is an urgent need for a vibration isolation sandwich panel with high torsional rigidity to solve the above problems. Summary of the Invention

[0005] Based on the above problems, the purpose of the present invention is to provide a vibration isolation sandwich panel with high torsional rigidity, which can improve the vibration isolation ability and torsional rigidity of the vibration isolation sandwich panel.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Provide a vibration isolation sandwich panel with high torsional rigidity, including:

[0008] A core structure, including a plurality of sandwich panel units stacked in sequence. Each sandwich panel unit includes a plurality of hollowed-out plates stacked in sequence. A plurality of hollowed-out regions are provided on the hollowed-out plates. Connecting ribs are formed between adjacent hollowed-out regions. After the plurality of hollowed-out plates are stacked, the connecting ribs of every two adjacent layers of hollowed-out plates are arranged in a staggered manner, so that in every two adjacent layers of hollowed-out plates, the connecting ribs of the upper hollowed-out plate are all suspended in the hollowed-out regions of the lower hollowed-out plate, and the connecting ribs of the lower hollowed-out plate are suspended in the hollowed-out regions of the upper hollowed-out plate;

[0009] A panel layer, and the core structure is provided with the panel layer on both sides in the stacking direction of the sandwich panel units.

[0010] As an optional scheme of the vibration isolation sandwich panel with high torsional rigidity of the present invention, the sandwich panel unit includes three hollowed-out plates stacked in sequence, and the hollowed-out regions of the three hollowed-out plates do not overlap each other.

[0011] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, the hollowed-out area on the hollowed-out plate includes a regular hexagon hollowed-out area, and among the three hollowed-out plates, the phase difference of the regular hexagon hollowed-out areas between any two is 60°.

[0012] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, arc transition corners are provided at the corner positions of the regular hexagon hollowed-out area.

[0013] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, a first through hole is provided in the central area of the core structure, a second through hole is provided in the central area of the panel layer, and the first through hole and the second through hole are aligned.

[0014] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, the area between the outer edge of the core structure and the hole edge of the first through hole is a support area, and at least one complete hollowed-out area of the hollowed-out plate is within the support area.

[0015] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, the width of the support area is D, and the value range of D is: 11.6 mm ≤ D ≤ 29 mm.

[0016] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, the thickness of the hollowed-out plate is H1, and the value range of H1 is: 0.5 mm ≤ H1 ≤ 2 mm;

[0017] And / or, the width of the connecting rib is W, and the value range of W is: 1 mm ≤ W ≤ 3 mm;

[0018] And / or, the thickness of the panel layer is H2, and the value range of H2 is: 0.2 mm ≤ H2 ≤ 10 mm.

[0019] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, the stacking number of the sandwich panel units is N1, and N1 is greater than or equal to 8;

[0020] And / or, in a single sandwich panel unit, the stacking number of the hollowed-out plates is N2, and N2 is greater than or equal to 3;

[0021] And / or, the cross-sectional shape of the vibration isolation sandwich panel with high torsional rigidity is quadrilateral, pentagonal, hexagonal or circular.

[0022] As an alternative to the vibration isolation sandwich panel with high torsional rigidity of the present invention, the vibration isolation sandwich panel with high torsional rigidity is integrally formed by 3D printing;

[0023] Alternatively, all adjacent two layers of the hollow plates are fixedly connected, and all adjacent two layers of the sandwich plate units are fixedly connected; the panel layer is fixedly connected to the core structure.

[0024] The beneficial effects of the present invention are as follows:

[0025] For the vibration isolation sandwich plate with high torsional rigidity provided by the present invention, since each sandwich plate unit includes a plurality of hollow plates stacked in sequence, and after the plurality of hollow plates are stacked, among the adjacent two layers of hollow plates, the connecting ribs of the upper hollow plate are suspended in the hollow area of the lower hollow plate, and the connecting ribs of the lower hollow plate are suspended in the hollow area of the upper hollow plate, that is, all the connecting ribs of the hollow plates are overhead. Therefore, when the vibration isolation sandwich plate is subjected to a longitudinal load, all the connecting ribs of each layer of hollow plate can elastically bend and deform longitudinally. The longitudinal deformations generated by the connecting ribs of the hollow plates of multiple sandwich plate units are superimposed, so that the vibration isolation sandwich plate as a whole can generate a sufficiently large elastic deformation longitudinally, thereby effectively buffering the longitudinal load and producing a good vibration isolation effect.

[0026] In addition, since the vibration isolation sandwich plate is formed by stacking a plurality of sandwich plate units, and the connecting ribs of the adjacent layers of hollow plates are arranged in a staggered manner, the connecting ribs of the multi-layer hollow plates form a continuous space truss structure in three-dimensional space. Therefore, the torsional load will be decomposed into tensile and compressive stresses in multiple directions, preventing the vibration isolation sandwich plate from generating torsional deformation. At the same time, the connecting ribs arranged in a staggered manner restrict the shear deformation directions between the layers of hollow plates, and further offset the torsional deformation through the redistribution of the interlayer shear stress, so that the vibration isolation sandwich plate has high torsional rigidity.

[0027] The vibration isolation sandwich plate of the present invention can not only generate a sufficiently large elastic deformation longitudinally (i.e., having low stiffness characteristics longitudinally) and have a good vibration isolation effect, but also has good anti-torsion ability (i.e., high torsional rigidity), can prevent the coupling of longitudinal vibration and torsional vibration, realize vibration isolation in a single direction, will not generate angular displacement disturbance, effectively improve the vibration isolation ability of the vibration isolation sandwich plate, and enable the vibration isolation sandwich plate to be applied to equipment with high vibration isolation requirements such as optoelectronic devices and satellites, providing a stable vibration isolation support platform for optoelectronic devices, satellites, etc. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0029] Figure 1It is a schematic structural diagram of a sandwich panel unit provided by a specific embodiment of the present invention;

[0030] Figure 2 It is a schematic plan view of a sandwich panel unit provided by a specific embodiment of the present invention;

[0031] Figure 3 It is a schematic structural diagram of a first hollowed-out plate provided by a specific embodiment of the present invention;

[0032] Figure 4 It is a side view of a first hollowed-out plate provided by a specific embodiment of the present invention;

[0033] Figure 5 It is a schematic structural diagram of a second hollowed-out plate provided by a specific embodiment of the present invention;

[0034] Figure 6 It is a schematic structural diagram of a third hollowed-out plate provided by a specific embodiment of the present invention;

[0035] Figure 7 It is a schematic structural diagram of a vibration isolation sandwich panel with high torsional rigidity provided by Embodiment 1 of the present invention;

[0036] Figure 8 It is a schematic diagram of a core structure provided by Embodiment 1 of the present invention;

[0037] Figure 9 Is Figure 8 The partial enlarged view at A in;

[0038] Figure 10 It is a schematic structural diagram of a vibration isolation sandwich panel with high torsional rigidity provided by Embodiment 2 of the present invention;

[0039] Figure 11 It is a schematic diagram of a core structure provided by Embodiment 2 of the present invention;

[0040] Figure 12 It is a schematic plan view of a core structure provided by Embodiment 2 of the present invention;

[0041] Figure 13 It is a schematic structural diagram of a vibration isolation sandwich panel with high torsional rigidity provided by Embodiment 3 of the present invention;

[0042] Figure 14 It is a schematic diagram of a core structure provided by Embodiment 3 of the present invention;

[0043] Figure 15 It is a schematic plan view of a core structure provided by Embodiment 3 of the present invention.

[0044] In the figure:

[0045] 1. Core structure; 2. Panel layer;

[0046] 11. Sandwich panel unit; 12. First through-hole; 13. Support area

[0047] 111. Hollow plate; 112. Hollow area; 113. Connecting rib; 114. Arc transition angle

[0048] 21. Second through-hole Detailed implementation manner

[0049] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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 situations.

[0052] As Figure 1 , Figure 2 , Figure 7 and Figure 8 shown, this embodiment provides a vibration isolation sandwich panel with high torsional rigidity, which can improve the vibration isolation ability and torsional rigidity of the vibration isolation sandwich panel. The vibration isolation sandwich panel with high torsional rigidity includes a core structure 1 and a panel layer 2.

[0053] Among them, the core structure 1 includes a plurality of sandwich panel units 11 stacked in sequence, and each sandwich panel unit 11 includes a plurality of hollow plates 111 stacked in sequence. Refer toFigure 3 , Figure 5 and Figure 6 , there are a plurality of hollow areas 112 provided on the hollow plate 111, and connecting ribs 113 are formed between adjacent hollow areas 112; after a plurality of hollow plates 111 are stacked, the connecting ribs 113 of each adjacent two layers of hollow plates 111 are arranged in a staggered manner, so that in each adjacent two layers of hollow plates 111, the connecting ribs 113 of the upper hollow plate 111 are all suspended in the hollow areas 112 of the lower hollow plate 111, and the connecting ribs 113 of the lower hollow plate 111 are suspended in the hollow areas 112 of the upper hollow plate 111. The core structure 1 is provided with panel layers 2 on both sides in the stacking direction of the sandwich panel unit 11 (as Figure 7 shown), and the panel layer 2 can directly bear external loads and disperse the loads to the core structure 1 to avoid stress concentration. At the same time, the panel layer 2 can protect the core structure 1 and extend the service life of the vibration isolation sandwich panel.

[0054] For the vibration isolation sandwich panel with high torsional rigidity provided in this embodiment, since each sandwich panel unit 11 includes a plurality of hollow plates 111 stacked in sequence, and after the plurality of hollow plates 111 are stacked, in each adjacent two layers of hollow plates 111, the connecting ribs 113 of the upper hollow plate 111 are suspended in the hollow areas 112 of the lower hollow plate 111, and the connecting ribs 113 of the lower hollow plate 111 are suspended in the hollow areas 112 of the upper hollow plate 111, that is, all the connecting ribs 113 of the hollow plate 111 are overhead. Therefore, when the vibration isolation sandwich panel is subjected to a longitudinal load, all the connecting ribs 113 of each layer of hollow plate 111 can produce elastic bending deformation longitudinally. The longitudinal deformations generated by the connecting ribs 113 of the hollow plates 111 of the plurality of sandwich panel units 11 are superimposed, so that the vibration isolation sandwich panel as a whole can produce a sufficiently large elastic deformation longitudinally, thereby effectively buffering the longitudinal load and producing a good vibration isolation effect.

[0055] In addition, since the vibration isolation sandwich panel is stacked by a plurality of sandwich panel units 11, and the connecting ribs 113 of the adjacent layer of hollow plates 111 are arranged in a staggered manner, the connecting ribs 113 of the multi-layer hollow plates 11 form a continuous space truss structure in the three-dimensional space. Therefore, the torsional load will be decomposed into tensile and compressive stresses in multiple directions, preventing the vibration isolation sandwich panel from producing torsional deformation. At the same time, the staggered arrangement of the connecting ribs 113 restricts the shear deformation directions between the hollow plates 111 of each layer, and further cancels the torsional deformation through the redistribution of the interlayer shear stress, making the vibration isolation sandwich panel have high torsional rigidity.

[0056] The vibration isolation sandwich panel of this embodiment can not only generate a sufficiently large elastic deformation longitudinally (i.e., have low stiffness characteristics longitudinally), possess good vibration isolation effect, but also have good torsional resistance (i.e., high torsional rigidity), prevent the coupling of longitudinal vibration and torsional vibration, realize vibration isolation in a single direction, will not generate angular displacement disturbance, effectively improve the vibration isolation ability of the vibration isolation sandwich panel, so that the vibration isolation sandwich panel can be applied to equipment with high vibration isolation requirements such as optoelectronic devices and satellites, and provide a stable vibration isolation support platform for optoelectronic devices, satellites, etc.

[0057] When the vibration isolation sandwich panel is applied to optoelectronic devices, the lower longitudinal stiffness can effectively isolate the low-frequency vibration transmitted from the carrier platform, improve the service life and reliability of optoelectronic devices. The high torsional rigidity can significantly enhance the anti-angular displacement ability and reduce the pointing deviation of optoelectronic devices.

[0058] The vibration isolation sandwich panel of this embodiment can be directly used as the installation substrate of optoelectronic devices to provide vibration isolation support. Compared with traditional vibration isolation mechanisms, it can reduce space occupation and additional weight, is beneficial to the miniaturization and light weight of optoelectronic system assemblies, and greatly improves the reliability of optoelectronic systems.

[0059] Optionally, the stacking number of the sandwich panel units 11 is N1, and N1 is greater than or equal to 8, so that the vibration isolation sandwich panel has a sufficient longitudinal dimension, and thus can generate a larger elastic deformation amount longitudinally. Exemplarily, as Figure 7 and Figure 8 shown, the stacking number of the sandwich panel units 11 is 10. In other embodiments, the stacking number of the sandwich panel units 11 can be adaptively increased or decreased according to the vibration isolation requirements of the vibration isolation sandwich panel, and is not limited to the numbers listed above.

[0060] Optionally, in a single sandwich panel unit 11, the stacking number of the hollow plates 111 is N2, and N2 is greater than or equal to 3, so that a single sandwich panel unit 11 can generate a sufficiently large elastic deformation longitudinally, thereby ensuring that after multiple sandwich panel units 11 are stacked, they have low stiffness characteristics longitudinally.

[0061] In this embodiment, referring to Figure 1 and Figure 2, the sandwich panel unit 11 includes three perforated plates 111 stacked in sequence, and the perforated areas 112 of the three perforated plates 111 do not overlap with each other, so that the connecting ribs 113 between any two of the three perforated plates 111 do not overlap with each other. After multiple sandwich panel units 11 are stacked, among the adjacent two layers of sandwich panel units 11, the connecting ribs 113 of the two perforated plates 111 facing each other do not overlap with each other. Furthermore, all the connecting ribs 113 of all the perforated plates 111 of the entire vibration isolation sandwich panel are in an overhead state. When the vibration isolation sandwich panel is subjected to a longitudinal load, all the connecting ribs 113 of the perforated plates 111 can generate longitudinal elastic deformation, so that the entire vibration isolation sandwich panel can generate a sufficiently large elastic deformation longitudinally, improving the vibration isolation effect.

[0062] Optionally, referring to Figure 3 , Figure 5 and Figure 6 , the perforated area 112 on the perforated plate 111 includes a regular hexagon perforated area. Among the three perforated plates 111, the phase difference between the regular hexagon perforated areas of any two is 60°. That is, the three perforated plates 111 adopt a fully staggered stacking design, and the regular hexagon perforated areas between adjacent layers are rotated by 60° relative to each other, so that the center of the regular hexagon perforated area of the upper perforated plate 111 is directly opposite to the node position of the connecting rib 113 of the lower perforated plate 111, and the connecting ribs 113 of the three perforated plates 111 do not overlap in the normal projection, realizing that each connecting rib 113 is suspended. Define Figure 3 , Figure 5 , Figure 6 among the three perforated plates 111 as the first perforated plate, the second perforated plate and the third perforated plate respectively. The regular hexagon perforated area of the second perforated plate is rotated by 60° relative to the regular hexagon perforated area of the first perforated plate, and the regular hexagon perforated area of the third perforated plate is rotated by 60° relative to the regular hexagon perforated area of the second perforated plate.

[0063] Due to the rotational symmetry of the regular hexagon perforated area, the multiple perforated plates 111 after staggered stacking have approximate isotropy in three-dimensional space. No matter from which direction the torque comes, the load can be dispersed through similar paths, and the overall structure is more likely to maintain geometric stability, improving the torsional rigidity of the vibration isolation sandwich panel.

[0064] Referring to Figure 3 , Figure 5 and Figure 6 , arc transition corners 114 are provided at the corner positions of the regular hexagon perforated area. The arc transition corners 114 can smoothly transition the load, reduce the local stress peak value, improve the durability of the perforated plate 111 under vibration load, and reduce the probability of the perforated plate 111 breaking and damaging.

[0065] Of course, in some other optional embodiments, the number of the hollow plates 111 in a single sandwich panel is not limited to three, and can also be formed by stacking two, four or other numbers of hollow plates 111, which can be adaptively adjusted according to the actual situation. The hollow areas 112 on the hollow plates 111 can also be triangular hollow areas, quadrilateral hollow areas, pentagonal hollow areas, circular hollow areas, etc., which can be adaptively designed according to actual requirements and are not limited to the shapes listed in this embodiment.

[0066] Refer to Figure 3 and Figure 4 , the thickness of the hollow plate 111 is H1, and the value range of H1 is: 0.5 mm ≤ H1 ≤ 2 mm, so that the hollow plate 111 is not too thick, and the connecting ribs 113 can elastically deform longitudinally to ensure the low stiffness characteristic of the vibration isolation sandwich panel in the longitudinal direction. Exemplarily, H1 can take values such as 0.5 mm, 0.6 mm, 1 mm, 1.5 mm, 2 mm, etc., but is not limited to the values and ranges listed above.

[0067] Refer to Figure 3 , the width of the connecting rib 113 is W, and the value range of W is: 1 mm ≤ W ≤ 3 mm, so that the connecting rib 113 has a certain strength and reduces the probability of the connecting rib 113 breaking. Exemplarily, W can take values such as 1 mm, 1.2 mm, 1.5 mm, 2 mm, 2.3 mm, 2.5 mm, 3 mm, etc., but is not limited to the values and ranges listed above.

[0068] By adjusting the two parameters of the thickness H1 of the hollow plate 111 and the width W of the connecting rib 113, the bending stiffness of the connecting rib 113 can be adjusted (where the thickness H1 of the hollow plate 111 represents the thickness of the connecting rib 113), and further the overall load-bearing capacity and longitudinal stiffness of the vibration isolation sandwich panel (i.e., the elastic deformation amount of the vibration isolation sandwich panel in the longitudinal direction) can be adjusted, so as to realize the adjustment of the vibration isolation load and vibration isolation frequency, and make the vibration isolation sandwich panel meet different vibration isolation strength requirements.

[0069] Optionally, the thickness of the panel layer 2 is H2, and the value range of H2 is: 0.2 mm ≤ H2 ≤ 10 mm. The panel layer 2 within this thickness range is not too thin or too thick, and while meeting the lightweight requirements, it ensures the structural strength of the vibration isolation sandwich panel. Specifically, the thickness of the panel layer 2 can be determined according to the load strength requirements of the vibration isolation sandwich panel, the material of the panel layer 2, etc. For example, the panel layer 2 can be made of materials such as aluminum alloy and titanium alloy, and its thickness can be 0.2 mm - 0.5 mm, 0.5 mm - 2 mm, 2 mm - 5 mm, etc., but is not limited to the ranges listed above. For another example, the panel layer 2 can be a composite material (such as carbon fiber, etc.), and its thickness can be 0.2 mm - 1 mm, 1 mm - 3 mm, 3 mm - 10 mm, etc., but is not limited to the ranges listed above.

[0070] Optionally, the vibration isolation sandwich panel with high torsional rigidity is integrally formed by 3D printing, without assembly, and can ensure uniform material distribution of the sandwich panel, reduce the risk of delamination, and improve the overall structural strength of the vibration isolation sandwich panel.

[0071] In some other embodiments, each hollow plate 111 can also be formed separately, and then fixedly connected between every two adjacent layers of hollow plates 111, and fixedly connected between every two adjacent layers of sandwich panel units 11; the panel layer 2 is fixedly connected to the core structure 1, so that each layer of hollow plate 111 of the vibration isolation sandwich panel can only deform longitudinally, and has great stiffness in the transverse and torsional directions, and angular displacement disturbance will not occur.

[0072] Exemplarily, the adjacent layers of hollow plates 111 can be fixedly connected by welding or bonding, the adjacent layers of sandwich panel units 11 can be fixedly connected by welding or bonding, and the panel layer 2 and the sandwich panel unit 11 can be fixedly connected by welding or bonding.

[0073] Three kinds of vibration isolation sandwich panels are introduced below with reference to Embodiment 1 to Embodiment 3 respectively.

[0074] Embodiment 1

[0075] As Figure 7 、 Figure 8 and Figure 9 shown, this embodiment provides a vibration isolation sandwich panel with high torsional rigidity. The cross-sectional shape of the vibration isolation sandwich panel is quadrilateral, and the core structure 1 includes 10 layers of sandwich panel units 11 stacked in sequence.

[0076] As Figure 7 and Figure 9 shown, each sandwich panel unit 11 includes three hollow plates 111, the three hollow plates 111 are fixed as a whole, 10 sandwich panel units 11 are fixed as a whole, and two panel layers 2 are fixed to the sandwich panel unit 11. This vibration isolation sandwich panel can be directly used as the installation substrate of optoelectronic devices, etc., and plays a role in vibration isolation and support for optoelectronic devices, etc.

[0077] Embodiment 2

[0078] This embodiment provides a vibration isolation sandwich panel with high torsional rigidity, and the difference from Embodiment 1 is that:

[0079] As Figure 10 、 Figure 11 and Figure 12As shown in the figure, a first through-hole 12 is provided in the central region of the core structure 1, and a second through-hole 21 is provided in the central region of the panel layer 2. The first through-hole 12 and the second through-hole 21 are opposite to each other and have the same shape. When the vibration isolation sandwich panel is applied to optoelectronic devices, the first through-hole 12 and the second through-hole 21 can provide space for the circuit and optical path layout of the optoelectronic devices. When the vibration isolation sandwich panel is applied to manufacturing and processing equipment, the first through-hole 12 and the second through-hole 21 can be used as filler and discharge channels for the manufacturing and processing equipment. In addition, the design of the first through-hole 12 and the second through-hole 21 can further reduce the weight of the vibration isolation sandwich panel and reduce the additional weight of optoelectronic devices and the like.

[0080] Referring to Figure 12 , the region between the outer edge of the core structure 1 and the hole edge of the first through-hole 12 is the support region 13, and there is at least one complete hollow region 112 in the support region 13 of the hollow plate 111. That is, a sufficiently wide support region 13 is reserved so that the topological structure of the hollow region 112 on the hollow plate 111 of the core structure 1 is not damaged, ensuring the vibration isolation effect of the vibration isolation sandwich panel.

[0081] Optionally, define the width of the support region 13 as D, where the value range of D is: 11.6 mm ≤ D ≤ 29 mm. With this setting, the support region 13 of the core structure 1 can be made large enough, so that more topological structures of the hollow region 112 can be retained in the support region 13, and thus the vibration isolation sandwich panel has excellent vibration isolation effect. 1 to 6 complete hollow regions 112 can be provided in the support region 13 of this embodiment. Further, 1 to 2.5 complete hollow regions 112 can be provided in the support region 13. In other embodiments, the number of hollow regions 112 can be adaptively increased or decreased according to actual situations (such as vibration isolation intensity requirements and the size of the hollow region 112), and is not limited to the numbers listed above.

[0082] Exemplarily, D can take values such as 11.6 mm, 12 mm, 15 mm, 20 mm, 25 mm, 29 mm, etc., but is not limited to the values and ranges listed above.

[0083] Optionally, the cross-sectional shape of the vibration isolation sandwich panel is quadrilateral. The presence of the first through-hole 12 and the second through-hole 21 makes the vibration isolation sandwich panel as a whole in a quadrilateral ring structure, which is suitable for optoelectronic devices with square bases or other manufacturing and processing equipment with square bases.

[0084] Embodiment III

[0085] This embodiment provides a variety of sandwich panels with high torsional rigidity, and the difference from Embodiment II is that:

[0086] As Figure 13 , Figure 14 and Figure 15As shown, the cross-sectional shape of the vibration isolation sandwich panel is hexagonal. A first through hole 12 is provided in the central region of the core structure 1, and a second through hole 21 is provided in the central region of the panel layer 2. The first through hole 12 and the second through hole 21 are directly opposite to each other. The existence of the first through hole 12 and the second through hole 21 makes the vibration isolation sandwich panel as a whole in a hexagonal ring structure. This vibration isolation sandwich panel is applicable to circular base optoelectronic devices, satellites, etc. The region between the outer edge of the core structure 1 and the hole edge of the first through hole 12 is the support region 13. There is at least one complete hollow region 112 in the support region 13 for the hollow plate 111 of the core structure 1, so that the topological structure of the hollow region 112 on the hollow plate 111 of the core structure 1 is not damaged, ensuring the vibration isolation effect of the vibration isolation sandwich panel.

[0087] Certainly, in some other optional embodiments, the cross-sectional shape of the vibration isolation sandwich panel can also be pentagonal, circular and other polygonal shapes, which can be adaptively designed according to the shape requirements of the equipment to be vibration isolated, and are not limited to the shapes listed above.

[0088] Note that the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vibration isolation sandwich panel with high torsional rigidity, characterized in that, Comprising: A core structure (1) including a plurality of sandwich panel units (11) stacked in sequence. Each of the sandwich panel units (11) includes a plurality of perforated plates (111) stacked in sequence. A plurality of perforated areas (112) are provided on the perforated plates (111). Connecting ribs (113) are formed between adjacent perforated areas (112). After the plurality of perforated plates (111) are stacked, the connecting ribs (113) of every two adjacent layers of perforated plates (111) are arranged in a staggered manner, so that in two adjacent layers of perforated plates (111), each connecting rib (113) of the upper perforated plate (111) is suspended above the perforated area (112) of the lower perforated plate (111), and each connecting rib (113) of the lower perforated plate (111) is suspended above the perforated area (112) of the upper perforated plate (111); A panel layer (2), and the core structure (1) is provided with the panel layer (2) on both sides in the stacking direction of the sandwich panel units (11); The sandwich panel unit (11) includes three perforated plates (111) stacked in sequence, and the perforated areas (112) of the three perforated plates (111) do not overlap each other; The perforated areas (112) on the perforated plate (111) include regular hexagon perforated areas. Among the three perforated plates (111), the phase difference between the regular hexagon perforated areas of any two is 60°; Arc transition corners (114) are provided at the corner positions of the regular hexagon perforated areas; The stacking number of the sandwich panel units (11) is N1, and N1 is greater than or equal to 8; and / or, the cross-sectional shape of the vibration isolation sandwich panel with high torsional rigidity is quadrilateral, pentagonal, hexagonal or circular.

2. The vibration isolation sandwich panel with high torsional rigidity according to claim 1, characterized in that, A first through hole (12) is provided in the central area of the core structure (1), and a second through hole (21) is provided in the central area of the panel layer (2), and the first through hole (12) is aligned with the second through hole (21).

3. The vibration isolation sandwich panel with high torsional rigidity according to claim 2, characterized in that, The area between the outer edge of the core structure (1) and the hole edge of the first through hole (12) is a support area (13), and there is at least one complete perforated area (112) of the perforated plate (111) in the support area (13).

4. The vibration isolation sandwich panel with high torsional rigidity according to claim 3, characterized in that, The width of the support area (13) is D, and the value range of D is: 11.6mm ≤ D ≤ 29mm.

5. The vibration isolation sandwich panel with high torsional rigidity according to any one of claims 1-4, characterized in that, The thickness of the perforated plate (111) is H1, and the value range of H1 is: 0.5mm ≤ H1 ≤ 2mm; and / or, the width of the connecting rib (113) is W, and the value range of W is: 1mm ≤ W ≤ 3mm; and / or, the thickness of the panel layer (2) is H2, and the value range of H2 is: 0.2mm ≤ H2 ≤ 10mm.

6. The vibration isolation sandwich panel with high torsional rigidity according to any one of claims 1-4, characterized in that The vibration isolation sandwich panel with high torsional rigidity is integrally formed by 3D printing; Or, every two adjacent layers of perforated plates (111) are fixedly connected, every two adjacent layers of sandwich panel units (11) are fixedly connected; the panel layer (2) is fixedly connected to the core structure (1).

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