Beam structure with honeycomb reinforced structure

Abstract

The invention discloses a beam structure with a honeycomb reinforced structure, which comprises a long hollow beam, at least one layer of honeycomb structure is arranged in the hollow beam, and the honeycomb structure comprises plates connected with the top surface and / or the bottom surface of the hollow beam and a plurality of hollow reinforced columns erected between the plates. And the plurality of reinforcing columns are arranged in a honeycomb shape between the plates. According to the beam structure with the honeycomb reinforced structure, the phenomenon that the bearing capacity of the structure is rapidly reduced after the thin wall of a conventional steel profile is unstable can be improved, and the bearing capacity of the structure is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a beam structure, in particular to a beam structure with a reinforced structure. BACKGROUND

[0002] The closed-section thin-walled beam structure has good structural rigidity and is widely used in the transportation, construction and other industries.

[0003] However, during lateral loading of the closed-section thin-walled beam structure, once the thin-walled structure buckles and loses stability, the lateral load-carrying capacity of the structure will quickly decrease, thereby affecting the overall performance of the structure.

[0004] Therefore, in order to improve the load-carrying capacity of the beam structure, some structural reinforcement features can be added to the beam structure.

[0005] For example, the Chinese patent document with publication number CN203267964U and publication date November 6, 2013, entitled "Automobile anti-collision beam with high energy absorption performance" discloses an automobile anti-collision beam with high energy absorption performance.

[0006] For another example, the Chinese patent document with publication number CN113825693A and publication date December 21, 2021, entitled "Side rocker component for a motor vehicle" discloses a side rocker component for a motor vehicle.

[0007] For another example, the Chinese patent document with publication number CN113665517A and publication date November 19, 2021, entitled "Automobile bumper using gradient foam aluminum" discloses a structure in which foam aluminum and carbon nano-reinforced foam aluminum-based composite material are filled inside the bumper, and a continuous or discontinuous fiber-reinforced material injection-molded thermoplastic composite material is added inside the metal structure cavity to improve the structural rigidity. SUMMARY

[0008] One of the purposes of the present application is to provide a beam structure with a honeycomb reinforced structure, which can improve the phenomenon that the load-carrying capacity of the structure rapidly decreases after the buckling instability of the conventional steel profile thin wall, and improve the structural load-carrying capacity.

[0009] In order to achieve the above-mentioned purpose, the present application provides a beam structure with a honeycomb reinforced structure, which comprises a long hollow beam, wherein:

[0010] At least one layer of honeycomb structure is arranged in the hollow beam, the honeycomb structure comprises a plate connected with the top surface and / or the bottom surface of the hollow beam, and a plurality of hollow reinforcing columns erected between the plates, the plurality of reinforcing columns are arranged in a honeycomb shape between the plates.

[0011] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the hollow beam is provided with at least two layers of the honeycomb structure arranged in the height direction of the hollow beam.

[0012] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the wall thickness of the reinforcing column of the honeycomb structure arranged in the upper layer is smaller than that of the reinforcing column of the honeycomb structure arranged in the lower layer.

[0013] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the aperture of the reinforcing column of the honeycomb structure arranged in the upper layer is larger than that of the reinforcing column of the honeycomb structure arranged in the lower layer.

[0014] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the cross section of the reinforcing column is hexagonal.

[0015] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the reinforcing column is an aluminum alloy reinforcing column.

[0016] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the plate is connected to the top surface and / or the bottom surface of the hollow beam by bolts.

[0017] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the reinforcing column is connected to the plate by welding.

[0018] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the top surface and / or the bottom surface of the hollow beam is provided with a plurality of groups of reinforcing grooves arranged in the length direction of the hollow beam, each group of reinforcing grooves comprising a plurality of reinforcing grooves, each reinforcing groove extending in the width direction of the hollow beam.

[0019] Further, in the beam structure with the honeycomb reinforced structure according to the present application, for each group of reinforcing grooves, the distance d1 between adjacent reinforcing grooves and the width d2 of the reinforcing grooves satisfy the condition: 1.5≤d1 / d2≤4.

[0020] Further, in the beam structure with the honeycomb reinforced structure according to the present application, at least one side wall of the hollow beam is provided with a plurality of reinforcing ribs arranged in the height direction of the hollow beam, each reinforcing rib extending in the length direction of the hollow beam.

[0021] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the reinforcing rib has the same length as the length of the hollow beam.

[0022] Further, in the beam structure with the honeycomb reinforced structure according to the present application, the hollow beam is made of a plate material with a tensile strength greater than 800 MPa.

[0023] The beam structure with the honeycomb reinforced structure according to the present application has the following advantages and beneficial effects:

[0024] The beam structure with the honeycomb reinforced structure according to the present application can improve the phenomenon that the structural bearing capacity of a conventional steel profile thin-walled beam structure rapidly decreases after buckling, and improve the structural bearing capacity.

[0025] The beam structure with the honeycomb reinforced structure according to the present application can be processed by conventional stamping, rolling or internal high-pressure forming processes, and has the technical advantages of relatively simple processing and manufacturing and good lightweight effect.

[0026] The beam structure with the honeycomb reinforced structure according to the present application has good structural strength in the axial and lateral directions, and also has excellent lightweight effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A conventional closed-section thin-walled beam structure is shown.

[0028] Figure 2 The state of a conventional closed-section thin-walled beam structure subjected to lateral load is shown.

[0029] Figure 3 The overall structure of the beam structure with the honeycomb reinforced structure according to the present application in one embodiment is shown.

[0030] Figure 4 The structure of the honeycomb structure in the beam structure with the honeycomb reinforced structure according to the present application in one embodiment is shown.

[0031] Figure 5 The structure of the reinforcing groove of the beam structure with the honeycomb reinforced structure according to the present application in one embodiment is shown.

[0032] Figure 6 The structure of the honeycomb structure in the beam structure with the honeycomb reinforced structure according to the present application in one embodiment is shown. DETAILED DESCRIPTION

[0033] The beam structure with the honeycomb reinforced structure according to the present application will be further explained and described below in conjunction with the drawings and specific embodiments, but the explanation and description do not constitute undue limitations on the technical solutions of the present application.

[0034] Figure 1 A conventional closed-section thin-walled beam structure is shown.

[0035] Figure 1 A long, closed-section thin-walled beam structure is shown, which has an internal support structure 1 inside.

[0036] Generally speaking, the lateral bearing capacity of thin-walled beam structures (i.e., Figure 1 The Z-axis will be lower than the axial direction (i.e., Figure 1 (in the Y direction), therefore, it can be designed in the lateral main force direction as follows. Figure 1 The internal support structure 1 is shown.

[0037] Figure 2 This shows the state of a conventional closed-section thin-walled beam structure under lateral loads.

[0038] like Figure 2 As shown, even with the internal support structure 1, during lateral loading, the thin wall 2, which is parallel to the load direction, is prone to instability when subjected to a lateral load F. Once the thin wall structure buckles and becomes unstable, the lateral bearing capacity of the structure will decrease rapidly, thus affecting the overall performance of the structure.

[0039] Based on this, the present invention provides a beam structure with a honeycomb reinforcement structure in one embodiment.

[0040] Figure 3 A schematic diagram of the overall structure of the beam structure with honeycomb reinforcement described in this invention is shown in one embodiment.

[0041] like Figure 3 As shown, in order to enhance the lateral load-bearing capacity of the thin-walled structure, in some embodiments, the present invention provides two layers of honeycomb structure 4 inside the hollow beam 3.

[0042] Figure 4 The diagram shows a schematic representation of the honeycomb structure in a beam structure with honeycomb reinforcement according to the present invention, in one embodiment.

[0043] like Figure 3 and Figure 4 As shown, each layer of honeycomb structure 4 includes a plate 5 connected to the top surface 8 and / or bottom surface 7 of the hollow beam 3, and a number of hollow reinforcing columns 6 erected between the plates 5, with the reinforcing columns 6 arranged in a honeycomb pattern between the plates 5.

[0044] It should be noted that, in Figure 3 and Figure 4 In the illustrated embodiment, the honeycomb structure 4 has two layers. Therefore, the upper plate 5 of the upper honeycomb structure 4 is connected to the top surface 8 of the hollow beam 3, and the lower plate 5 of the lower honeycomb structure 4 is connected to the bottom surface 7 of the hollow beam 3. A plate 5 separating the two honeycomb structures is also provided between them.

[0045] In some other embodiments, only one layer of honeycomb structure 4 may be provided inside the hollow beam 3. When only one layer of honeycomb structure 4 is provided inside the hollow beam 3, the upper plate 5 of the honeycomb structure 4 is connected to the top surface 8 of the hollow beam 3, and the lower plate 5 of the honeycomb structure 4 is connected to the bottom surface 7 of the hollow beam 3.

[0046] In some more specific implementations, such as Figure 3 As shown, the plate 5 and the top surface 8 and / or bottom surface 7 of the hollow beam 3 can be fixedly connected by bolts 9, thereby further ensuring the stable transmission of load during deformation.

[0047] In some other embodiments, the plate 5 and the top surface 8 and / or bottom surface 7 of the hollow beam 3 can also be fixedly connected by adhesive bonding.

[0048] In some more specific embodiments, the connection between the reinforcing column 6 and the plates 5 at its upper and lower ends can be achieved by welding. This connection method can further improve the load-bearing capacity through the air compression effect during dynamic deformation.

[0049] It should be noted that in other embodiments, three, four, five, or more layers of honeycomb structure 4 can also be provided inside the hollow beam 3. These multiple layers of honeycomb structure 4 are arranged in the height direction of the hollow beam 3 (i.e., Figure 3 Arranged in the Z direction.

[0050] In some more specific embodiments, the wall thickness of the reinforcing column in the upper layer of the cellular structure in at least two layers is less than the wall thickness of the reinforcing column in the lower layer of the cellular structure.

[0051] In some other, more specific embodiments, the pore size of the reinforcing post of the upper cell structure in at least two layers of the cellular structure is larger than the pore size of the reinforcing post of the lower cell structure.

[0052] In this configuration, by designing a gradient in the wall thickness of the reinforcing columns or the pore size of the honeycomb structure in different layers, a gradient design for the crushing strength of the multi-layer honeycomb structure can be achieved, thereby realizing a more stable deformation mode.

[0053] In some more specific implementations, such as Figure 4 As shown, the cross-section of the reinforcing column 6 is hexagonal.

[0054] In some more specific implementations, to further achieve a lightweight design, the reinforcing column 6 can be an aluminum alloy reinforcing column.

[0055] In addition, such as Figure 3As shown, in some preferred embodiments, to further enhance the lateral bearing capacity of the hollow beam, additional features can be provided on the top surface 8 and / or bottom surface 7 of the hollow beam 3 along the length direction of the hollow beam 3 (i.e., Figure 3 Several sets of reinforcing grooves are arranged in the X direction of the hollow beam, wherein each set of reinforcing grooves includes several reinforcing grooves 10, and each reinforcing groove 10 is located in the width direction of the hollow beam (i.e., Figure 3 It extends upwards in the Y direction.

[0056] In a more specific embodiment, the reinforcing groove 10 may be configured as a protrusion or a recess, as required in the art.

[0057] In addition, such as Figure 3 As shown, in some preferred embodiments, to further enhance the strengthening effect, at least one sidewall of the hollow beam 3 may also be provided with a reinforcement along the height direction of the hollow beam 3 (i.e., Figure 3 Several reinforcing ribs 11 are arranged along the Z-direction of the hollow beam 3, wherein each reinforcing rib 11 is along the length direction of the hollow beam 3 (i.e., Figure 3 It extends upwards in the X direction.

[0058] In some more specific embodiments, the extension length of the stiffener 11 is the same as the length of the hollow beam 3.

[0059] In some other embodiments, the extension length of the reinforcing rib 11 may also be shorter than the length of the hollow beam 3.

[0060] Figure 5 The diagram shows a structural schematic of the reinforcing groove of the beam structure with honeycomb reinforcement according to one embodiment of the present invention.

[0061] like Figure 5 As shown, the symbol "d1" indicates the spacing between adjacent reinforcing grooves 10, the symbol "d2" indicates the width of a single reinforcing groove 10, the symbol "L1" indicates the length of a single reinforcing groove 10, and the symbol "L2" indicates the width of the top surface 8 of the hollow beam 3.

[0062] In some embodiments, the spacing d1 between adjacent reinforcing grooves 10 and the width d2 of the reinforcing groove 10 can satisfy: 1.5≤d1 / d2≤4, so as to further improve the reinforcing effect.

[0063] In some more specific embodiments, the hollow beam 3 can be made of a plate with a tensile strength greater than 800 MPa.

[0064] Figure 6 The diagram shows a split structure of the honeycomb structure in a beam structure with honeycomb reinforcement according to the present invention, in one embodiment.

[0065] like Figure 6As shown, in a specific example, the hollow beam 3 is made of aluminum-silicon thermoforming material B1500HS-AS through a roll forming tube-hot gas expansion forming process.

[0066] The hollow beam 3 has two layers of honeycomb structure 4. The reinforcing columns of the upper honeycomb structure 12 are made of aluminum with a wall thickness of 0.08mm. The reinforcing columns of the lower honeycomb structure 13 are also made of aluminum with a wall thickness of 0.12mm. The upper and lower reinforcing columns are connected by three layers of plates 5 at the top, middle and bottom.

[0067] Plate 5 is mechanically connected to hollow beam 3 by through bolts, and the upper and lower plates connected to the hollow beam are coated with anti-electrochemical corrosion adhesive.

[0068] In addition, several sets of reinforcing grooves 10 are arranged on the top and bottom surfaces of the hollow beam. The length of the reinforcing groove is L1 = 46 mm, the width of the reinforcing groove is d2 = 12 mm, the spacing between the reinforcing grooves is d1 = 20 mm, and the width of the top or bottom surface of the hollow beam is L2 = 42 mm.

[0069] In addition, the hollow beam 3 has reinforcing ribs 11 on both sides of the side wall, with four reinforcing ribs on each side wall.

[0070] In this manner, the beam structure with honeycomb reinforcement described in this invention can improve the phenomenon of rapid decline in structural load-bearing capacity after the instability of thin-walled steel profiles, thereby enhancing the structural load-bearing capacity. Furthermore, the beam structure with honeycomb reinforcement described in this invention can be processed using conventional stamping, roll forming, or internal high-pressure forming processes, offering advantages such as relatively simple manufacturing and good lightweighting.

[0071] It should be noted that the prior art portion of the protection scope of this invention is not limited to the embodiments given in this invention document. All prior art that does not contradict the solution of this invention, including but not limited to prior patent documents, prior publications, prior public uses, etc., can be included in the protection scope of this invention.

[0072] Furthermore, the combination of the technical features in this case is not limited to the combination methods described in the claims of this case or the combination methods described in the specific embodiments. All technical features described in this case can be freely combined or combined in any way, unless they contradict each other.

[0073] It should also be noted that the embodiments listed above are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made thereto are those that can be directly derived or easily conceived by those skilled in the art from the content disclosed in the present invention, and should all fall within the protection scope of the present invention.

Claims

1. A beam structure with a honeycomb reinforcement structure, comprising an elongated hollow beam, characterized in that: The hollow beam has at least one layer of honeycomb structure, the honeycomb structure includes a plate connected to the top and / or bottom surface of the hollow beam, and a plurality of hollow reinforcing columns erected between the plates, the plurality of reinforcing columns being arranged in a honeycomb pattern between the plates.

2. The beam structure with honeycomb reinforcement as described in claim 1, characterized in that, The hollow beam contains at least two layers of the honeycomb structure, which are arranged along the height of the hollow beam.

3. The beam structure with honeycomb reinforcement as described in claim 2, characterized in that, The wall thickness of the reinforcing column of the upper cell structure in the at least two layers of the cellular structure is less than the wall thickness of the reinforcing column of the lower cell structure.

4. The beam structure with honeycomb reinforcement as described in claim 2, characterized in that, The pore size of the reinforcing post in the upper layer of the at least two layers of the cellular structure is larger than the pore size of the reinforcing post in the lower layer.

5. The beam structure with honeycomb reinforcement as described in claim 1, characterized in that, The cross-section of the reinforcing column is hexagonal.

6. The beam structure with honeycomb reinforcement as described in claim 1, characterized in that, The reinforcing column is an aluminum alloy reinforcing column.

7. The beam structure with honeycomb reinforcement as described in claim 1, characterized in that, The plate is connected to the top and / or bottom surfaces of the hollow beam by bolts.

8. The beam structure with honeycomb reinforcement as described in claim 1, characterized in that, The reinforcing column is connected to the plate by welding.

9. The beam structure with honeycomb reinforcement as described in any one of claims 1-8, characterized in that, The hollow beam has several sets of reinforcing grooves arranged along the length of the hollow beam on its top and / or bottom surfaces. Each set of reinforcing grooves includes several reinforcing grooves, and each reinforcing groove extends in the width direction of the hollow beam.

10. The beam structure with honeycomb reinforcement as described in claim 9, characterized in that, For each set of reinforcing grooves, the spacing d1 between adjacent reinforcing grooves and the width d2 of the reinforcing groove satisfy: 1.5≤d1 / d2≤4.

11. The beam structure with honeycomb reinforcement as described in any one of claims 1-8, characterized in that, At least one side wall of the hollow beam is provided with a plurality of reinforcing ribs arranged in the height direction of the hollow beam, wherein each reinforcing rib extends along the length direction of the hollow beam.

12. The beam structure with honeycomb reinforcement as described in claim 11, characterized in that, The extension length of the reinforcing rib is the same as the length of the hollow beam.

13. The beam structure with honeycomb reinforcement as described in claim 1, characterized in that, The hollow beam is made of a plate with a tensile strength greater than 800 MPa.

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