Combination plates, booms and operating machinery

Abstract

The present invention provides a combined plate, an arm, and an operating machine, comprising: a base plate that is a metal plate, a connecting plate that is disposed on one side of the base plate and is connected to the base plate, a connecting plate that is a composite material plate, a fixed plate that is disposed at one end where the base plate and the connecting plate are connected, at least a portion of the connecting plate is located between the base plate and the fixed plate, a connecting member that passes through the fixed plate, the connecting plate, and the base plate to connect the base plate and the connecting plate; and / or a reinforcing plate that is disposed at one end where the connecting plate and the base plate are connected, a connecting member that passes through the reinforcing plate, the connecting plate, and the base plate to connect the base plate and the connecting plate. Through the above technical solution, the connection strength of the connection between the connecting plate and the base plate is enhanced, and by locally thickening the connection between the connecting plate and the base plate, while improving the connection strength of the connection, the local thickness of the entire component can also be reduced, thereby reducing the weight of the entire component.

Description

Technical Field

[0001] The present invention relates to the technical field of connection structures, in particular to a combined plate, an arm and an operating machine. Background Art

[0002] Fiber-reinforced composites, with their advantages of high specific strength and stiffness, high-temperature resistance, corrosion resistance, fatigue resistance, customizable properties, and anisotropy, are increasingly being used in engineering fields such as aviation, aerospace, vehicles, ships, construction, petroleum, bridges, wind power, and architecture. Pultruded fiber-reinforced composites can be made into profiles with a variety of uniform cross-sectional shapes, such as rods, tubes, solid profiles (I-shaped, channel-shaped, square), and hollow profiles. However, they cannot be molded integrally to produce large, non-uniform components, requiring connection to metal structures in some locations.

[0003] At present, the connection method between pultruded fiber composite components and metal parts is commonly used in actual engineering applications, such as Figure 1 As shown, the pultruded composite material 10' and the metal component 20' are fixedly connected by screws 30' to form a single shear structure with a shear surface. However, the connection strength of the single shear structure is relatively low. In order to ensure the strength of the connection, the related art thickens the entire pultruded composite material component, resulting in an increase in the weight of the entire component. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention is to provide a composite panel.

[0006] A second aspect of the present invention is to provide a boom.

[0007] A third aspect of the present invention is to provide a working machine.

[0008] In view of this, according to a first aspect of the present invention, a combined plate is provided, comprising: a substrate, a connecting plate and a fixing plate and / or a reinforcing plate, wherein the substrate is a metal plate, the connecting plate is arranged on one side of the substrate and connected to the substrate, the connecting plate is a composite material plate, the fixing plate is arranged at one end where the substrate and the connecting plate are connected, at least a portion of the connecting plate is located between the substrate and the fixing plate, a first connecting member passes through the fixing plate, the connecting plate and the substrate to connect the substrate and the connecting plate, or / and the reinforcing plate is arranged at one end where the connecting plate and the substrate are connected, the reinforcing plate is located on one side of the connecting plate, and the first connecting member passes through the reinforcing plate, the connecting plate and the substrate to connect the substrate and the connecting plate.

[0009] The combined plate provided by the present invention includes a base plate, a connecting plate, a fixed plate and a reinforcing plate, wherein, when the reinforcing plate is not provided, the first connecting member connects the fixed plate, the connecting plate and the base plate, that is, a part of the fixed plate is fixedly connected to the base plate, and a part is fixedly connected to the connecting plate, that is, a shear surface is formed between the lower surface of the connecting plate and the upper surface of the base plate, and another shear surface is formed between the upper surface of the connecting plate and the lower surface of the fixed plate, that is, an asymmetric double shear structure with two shear surfaces is formed by the above-mentioned connection structure, ensuring that the load transfer path in the connection between the connecting plate and the base plate changes little, thereby improving the connection strength between the connecting plate and the base plate, and thus extending the service life of the workpiece having the combined plate.

[0010] When a reinforcing plate is provided, it should be noted that the size of the reinforcing plate is smaller than that of the connecting plate. By connecting the reinforcing plate to the connecting plate, the connecting plate is partially thickened, and the locally thickened connecting plate is fixedly connected to the base plate, thereby enhancing the connection strength at the connection between the connecting plate and the base plate. This avoids the related art of thickening the entire pultruded composite material in order to improve the connection strength between the pultruded composite material and the metal structural member, thereby increasing the weight of the entire component. The present invention locally thickens the connection between the connecting plate and the base plate, which can improve the connection strength at the connection while reducing the local thickness of the entire component, thereby reducing the weight of the entire component.

[0011] In addition, the connection structure in the above technical solution provided by the present invention may also have the following additional technical features:

[0012] In the above technical solution, further, the reinforcing plate includes: a first reinforcing plate, which is fixedly connected to one side of the connecting plate; and a second reinforcing plate, which is fixedly connected to the other side of the connecting plate.

[0013] In this technical solution, the reinforcing plate includes a first reinforcing plate and a second reinforcing plate, wherein the first reinforcing plate is fixedly connected to one side of the connecting plate, and the second reinforcing plate is fixedly connected to the other side of the connecting plate, that is, the upper and lower sides of the connecting plate are locally thickened, and the locally thickened connecting plate is fixedly connected to the base plate, further enhancing the connection strength at the connection between the connecting plate and the base plate, avoiding the related art of thickening the entire pultruded composite material in order to improve the connection strength between the pultruded composite material and the metal structural member, thereby increasing the weight of the entire component. The present invention locally thickens the connection between the connecting plate and the base plate, which can improve the connection strength of the connection while reducing the local thickness of the entire component, thereby reducing the weight of the entire component.

[0014] In any of the above technical solutions, further, the connecting plate and / or the reinforcing plate are provided with a plurality of composite material layers.

[0015] In this technical solution, the connecting plate is provided with multiple composite material plies, specifically, a first ply, a second ply, and a third ply. The first ply is a 0° ply, accounting for 80% to 90% of the total ply, the second ply is a 45° ply or a -45° ply, and the third ply is a 90° ply, wherein the second and third plies account for 10% to 20% of the total ply. By optimizing the ply design on the surface of the connecting plate, that is, adding a 0° ply, the addition of a 0° ply can improve the overall stiffness of the connecting plate, thereby ensuring the connection strength between the connecting plate and the base plate, avoiding the problem in the related art of increasing the proportion of ±45° and 90° plies while reducing the proportion of 0° plies to ensure the extrusion strength and shear strength between the pultruded composite material and the metal component, resulting in a decrease in the overall stiffness of the pultruded composite material and a decrease in the connection strength between the pultruded composite material and the metal component.

[0016] Furthermore, the reinforcement plate is provided with a plurality of composite material plies, specifically, a fourth ply, a fifth ply, and a sixth ply, wherein the fourth ply is a 45° ply or a -45° ply, accounting for 80% to 90% of the total ply, the fifth ply is a 0° ply, the sixth ply is a 90° ply, and the fifth and sixth plies account for 10% to 20% of the total ply, and are laid on the reinforcement plate. By optimizing the ply design on the surface of the reinforcement plate, that is, adding ±45° plies, that is, adding ±45° plies to the reinforcement plate at the contact surface between the reinforcement plate and the fixed plate, the extrusion strength and shear strength between the reinforcement plate and the fixed plate and / or the reinforcement plate and the base plate can be improved, that is, the extrusion strength and shear strength at the connection between the connecting plate, the fixed plate, and the base plate are enhanced, thereby improving the connection strength between the connecting plate and the base plate.

[0017] In any of the above technical solutions, further, the connecting plate is one or more of a resin-based carbon fiber reinforced composite plate, a resin-based glass fiber reinforced composite plate, a resin-based spunbond fiber reinforced composite plate, a resin-based boron fiber reinforced composite plate, a resin-based graphite fiber reinforced composite plate, and a metal-based and ceramic-based composite plate.

[0018] In any of the above technical solutions, further, the fixing plate includes: a first fixing section, the first fixing section is fixedly connected to at least a portion of the connecting plate or the reinforcing plate; a second fixing section is connected to the first fixing section, the second fixing section is fixedly connected to the base plate, the first fixing section and the second fixing section can define an installation area, at least a portion of the connecting plate or the reinforcing plate is arranged in the installation area; wherein the thickness of the first fixing section is greater than or equal to the thickness of the connecting plate.

[0019] In this technical solution, the fixing plate includes a first fixing section and a second fixing section, wherein the first fixing section is fixedly connected to the reinforcing plate, and the second fixing section is fixedly connected to the base plate, and the first fixing section is fixedly connected to the second fixing section. Furthermore, the first fixing section and the second fixing section define an installation area, wherein at least a portion of the connecting plate is located within the installation area, or at least a portion of the connecting plate and the reinforcing plate are located within the installation area. In addition, the thickness of the first fixing section is greater than or equal to the thickness of the connecting plate, that is, the thickness of the connection between the fixing plate and the connecting plate is greater than the thickness of the connecting plate, thereby further ensuring the connection strength between the connecting plate and the base plate.

[0020] In any of the above technical solutions, the combined plate further includes: a second connecting member, which reinforces the connecting plate and the reinforcing plate; and a third connecting member, which reinforces the second fixing section and the base plate.

[0021] In this technical solution, the combined plate also includes a second connecting member and a third connecting member, wherein the second connecting member reinforces the connecting plate and the reinforcing plate, and the third connecting member reinforces the second fixed section and the base plate, further ensuring the connection strength at the connection between the connecting plate and the base plate, and extending the service life of the workpiece having the combined plate.

[0022] In any of the above technical solutions, the connection structure further includes: an adhesive member, which is arranged in the installation area, and the adhesive member bonds the connecting plate, the fixing plate and the substrate; or the adhesive member bonds the connecting plate, the reinforcing plate, the fixing plate and the substrate.

[0023] In this technical solution, the composite panel also includes an adhesive, which bonds the connecting plate, the fixing plate and the base plate to each other, thereby fixing the connecting plate, the fixing plate and the base plate in connection, or the adhesive bonds the connecting plate, the reinforcing plate, the fixing plate and the base plate to each other, thereby ensuring the connection effect.

[0024] The second aspect of the present invention provides an arm support, comprising at least one plate, which is a combined plate provided by any technical solution of the first aspect of the present invention. Therefore, the arm support has all the beneficial effects of the combined plate provided by any of the above technical solutions, which will not be repeated here.

[0025] Furthermore, the plate includes a top plate, a bottom plate and two side plates, which enclose a box-type structure. The top plate, the bottom plate and the two side plates are all combined plates, and the base plate of the combined plate is located at the end of the arm.

[0026] The third aspect of the present invention provides an operating machine having an arm provided by any technical solution of the second aspect of the present invention, or a combination plate provided by any technical solution of the first aspect of the present invention. Therefore, the operating machine has all the beneficial effects of the arm or combination plate provided by any of the above-mentioned technical solutions, which will not be repeated here.

[0027] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0029] Figure 1 A schematic structural diagram showing a method for connecting a pultruded composite material and a metal component in the related art is shown;

[0030] Figure 2 A schematic structural diagram of a connection structure according to an embodiment of the present invention is shown;

[0031] Figure 3 A schematic structural diagram of a connection structure according to another embodiment of the present invention is shown;

[0032] Figure 4 A schematic structural diagram of a connection structure according to yet another embodiment of the present invention is shown;

[0033] Figure 5 A structural schematic diagram of a connection structure according to yet another embodiment of the present invention is shown.

[0034] in, Figures 1 to 5 The corresponding relationship between the reference numerals and component names is as follows:

[0035] 10' pultruded composite material, 20' metal component, 30' screw, 10 base plate, 20 connecting plate, 30 fixing plate, 40 reinforcing plate, 402 first reinforcing plate, 404 second reinforcing plate, 50 first connecting piece, 302 first fixing section, 304 second fixing section, 60 second connecting piece, 70 third connecting piece. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0038] Refer to the following Figures 2 to 5 The combined plate, boom and working machine according to some embodiments of the present invention are described.

[0039] Example 1

[0040] like Figure 2 and Figure 5 As shown, according to an embodiment of the first aspect of the present invention, a combined plate is provided, comprising: a substrate 10, a connecting plate 20 and a fixing plate 30, and / or a reinforcing plate 40, wherein the substrate 10 is a metal plate, the connecting plate 20 is arranged on one side of the substrate 10 and connected to the substrate 10, the connecting plate 20 is a composite material plate, the fixing plate 30 is arranged at one end where the substrate 10 and the connecting plate 20 are connected, at least a portion of the connecting plate 20 is located between the substrate 10 and the fixing plate 30, a first connecting member 50 passes through the fixing plate 30, the connecting plate 20 and the substrate 10 to connect the substrate 10 and the connecting plate 20, the reinforcing plate 40 is arranged at one end where the connecting plate 20 and the substrate 10 are connected, the reinforcing plate 40 is located on one side of the connecting plate 20, and the first connecting member 50 passes through the reinforcing plate 40, the connecting plate 20 and the substrate 10 to connect the substrate 10 and the connecting plate 20.

[0041] The combined plate provided by the present invention includes a base plate 10, a connecting plate 20 and a fixed plate 30, and / or a reinforcing plate 40, wherein the fixed plate 30 and the reinforcing plate 40 can be set selectively or simultaneously. When the reinforcing plate 40 is not set, the first connecting member 50 connects the fixed plate 30, the connecting plate 20 and the base plate 10, that is, a part of the fixing plate 30 is fixedly connected to the base plate 10, and a part is fixedly connected to the connecting plate 20, that is, a shear surface is formed between the lower surface of the connecting plate 20 and the upper surface of the base plate 10, and another shear surface is formed between the upper surface of the connecting plate 20 and the lower surface of the fixed plate 30, that is, the metal plate and the composite material plate are fixedly connected by the above-mentioned connecting structure, and an asymmetric double shear structure with two shear surfaces can be formed, ensuring that the load transfer path in the connection between the connecting plate 20 and the base plate 10 changes little, thereby improving the connection strength between the connecting plate 20 and the base plate 10, and thereby extending the service life of the workpiece having the combined plate.

[0042] When a reinforcing plate 40 is provided, it should be noted that the size of the reinforcing plate 40 is smaller than that of the connecting plate 20. By connecting the reinforcing plate 40 to the connecting plate 20, the connecting plate 20 is partially thickened, and the locally thickened connecting plate 20 is fixedly connected to the base plate 10, thereby further enhancing the connection strength between the connecting plate 20 and the base plate 10. This avoids the related art of thickening the entire pultruded composite material in order to improve the connection strength between the pultruded composite material and the metal structural member, thereby increasing the weight of the entire component. The present invention locally thickens the connection between the connecting plate 20 and the base plate 10, which can improve the connection strength of the connection while reducing the local thickness of the entire component, thereby reducing the weight of the entire component.

[0043] It should be noted that a layer of specified thickness can be laid locally on the connecting plate 20 to form a reinforcing plate 40, thereby improving the connection strength of the connection point while ensuring the connection effect between the reinforcing plate 40 and the connecting plate 20 without the need for other connection means for fixed connection, thereby further improving the connection strength of the connection point.

[0044] In addition, the reinforcing plate 40 and the connecting plate 20 can be made of the same material, both of which are pultruded composite materials. The number of first connecting members can be multiple, and they can be screws. Screws are more common and can improve the connection strength between the metal plate and the composite plate while reducing costs.

[0045] Example 2

[0046] Based on the above embodiment, the specific structure and quantity of the reinforcing plate 40 are explained. Specifically, Figure 2 、 Figure 3 and Figure 5 As shown, the reinforcing plate 40 includes: a first reinforcing plate 402 , which is fixedly connected to one side of the connecting plate 20 ; and a second reinforcing plate 404 , which is fixedly connected to the other side of the connecting plate 20 .

[0047] In this embodiment, the reinforcing plate 40 includes a first reinforcing plate 402 and a second reinforcing plate 404, wherein the first reinforcing plate 402 is fixedly connected to one side of the connecting plate 20, and the second reinforcing plate 404 is fixedly connected to the other side of the connecting plate 20, that is, the upper and lower sides of the connecting plate 20 are locally thickened, and the locally thickened connecting plate 20 is fixedly connected to the base plate 10, further enhancing the connection strength of the connection between the connecting plate 20 and the base plate 10, avoiding the related art of thickening the entire pultruded composite material in order to improve the connection strength between the pultruded composite material and the metal structural member, thereby increasing the weight of the entire component. The present invention locally thickens the connection between the connecting plate 20 and the base plate 10, while improving the connection strength of the connection, it can also reduce the local thickness of the entire component, thereby reducing the weight of the entire component.

[0048] Furthermore, after the first reinforcing plate 402 and the second reinforcing plate 404 are respectively fixedly connected to the connecting plate 20, secondary curing can be performed. The secondary curing can usually be performed by heating or hot pressing to ensure the connection strength between the connecting plate 20 and the reinforcing plate 40, thereby further enhancing the connection strength between the connecting plate 20 and the substrate 10, thereby extending the service life of the workpiece having the connection structure.

[0049] In a specific embodiment, Figure 3As shown, the connecting plate 20 can be fixedly connected to the second reinforcing plate 404 to locally thicken the connecting plate 20. The specific selection can be made according to actual needs.

[0050] Example 3

[0051] Based on any of the above embodiments, the layup design of the connecting plate 20 and the reinforcing plate 40 is explained. Specifically, the connecting plate 20 is provided with multiple composite material layups, specifically, it can include a first layup, a second layup and a third composite layer. The first layup, wherein the first layup is a 0° layup, and the first layup accounts for 80% to 90% of the total layups; the second layup, the second layup is a 45° layup or a -45° layup; the third layup, the third layup is a 90° layup, and the second layup and the third layup account for 10% to 20% of the total layups.

[0052] In this embodiment, the connecting plate 20 is provided with a plurality of composite material plies, specifically, a first ply, a second ply, and a third ply. The first ply is a 0° ply, accounting for 80% to 90% of the total ply, the second ply is a 45° ply or a -45° ply, and the third ply is a 90° ply, wherein the second and third plies account for 10% to 20% of the total ply. By optimizing the ply design on the surface of the connecting plate 20, that is, adding a 0° ply, the addition of the 0° ply can improve the overall stiffness of the connecting plate 20, thereby ensuring the connection strength between the connecting plate 20 and the base plate 10, avoiding the related art that increases the proportion of ±45° and 90° plies and reduces the proportion of 0° plies to ensure the extrusion strength and shear strength between the pultruded composite material and the metal component, resulting in a decrease in the overall stiffness of the pultruded composite material and a decrease in the connection strength between the pultruded composite material and the metal component.

[0053] Furthermore, the reinforcing plate 40 is provided with a plurality of composite material plies, specifically, it may include a fourth ply, a fifth ply and a sixth ply, wherein the fourth ply is a 45° ply or a -45° ply, accounting for 80% to 90% of the total ply amount, the fifth ply is a 0° ply, the sixth ply is a 90° ply, and the fifth and sixth plies account for 10% to 20% of the total ply amount, and are laid on the reinforcing plate 40 body. It should be noted that the laying order of the fourth ply, the fifth ply and the sixth ply is not limited here. By optimizing the ply design on the surface of the reinforcing plate 40 body, that is, adding ±45° plies, that is, adding ±45° plies to the reinforcing plate 40 body at the contact surface between the reinforcing plate 40 and the fixing plate 30, the extrusion strength and shear strength between the reinforcing plate 40 and the fixing plate 30 and / or the reinforcing plate 40 and the base plate 10 can be improved, that is, the extrusion strength and shear strength of the connection between the connecting plate 20, the fixing plate 30 and the base plate 10 are enhanced, thereby improving the connection strength between the connecting plate 20 and the base plate 10.

[0054] Through the above-mentioned layer design, the connecting plate 20 can improve the overall stiffness of the connecting plate 20 while improving the extrusion strength and shear strength between the connecting plate 20, the fixing plate 30 and the base plate 10, further ensuring the connection strength between the connecting plate 20 and the base plate 10, avoiding the related art that increases the proportion of ±45° and 90° layers and reduces the proportion of 0° layers to ensure the extrusion strength and shear strength of the connection between the pultruded composite material and the metal component, resulting in a decrease in the overall stiffness of the pultruded composite material. It also avoids the related art that increases the proportion of 0° layers and reduces the proportion of ±45° and 90° layers to ensure the stiffness between the pultruded composite material and the metal component, resulting in a decrease in the extrusion strength and shear strength of the connection between the pultruded composite material and the metal component, thereby causing a decrease in the connection strength between the pultruded composite material and the metal component.

[0055] It should be noted that, for the design of the ply, the 0° ply can of course also be designed to account for 60%-90% of the total ply, and the ply angle can be 30° to 60°. The above design is a preferred embodiment, and can be specifically designed according to actual needs.

[0056] In a specific embodiment, further, the connecting plate 20 is one or more of a resin-based carbon fiber reinforced composite plate, a resin-based glass fiber reinforced composite plate, a resin-based spunbond fiber reinforced composite plate, a resin-based boron fiber reinforced composite plate, a resin-based graphite fiber reinforced composite plate, and a metal-based and ceramic-based composite plate.

[0057] Example 4

[0058] On the basis of any of the above embodiments, further, as Figure 4 and Figure 5 As shown, the fixing plate 30 includes: a first fixing section 302, the first fixing section 302 is fixedly connected to at least a portion of the connecting plate 20 or the reinforcing plate 40; a second fixing section 304, connected to the first fixing section 302, the second fixing section 304 is fixedly connected to the substrate 10, the first fixing section 302 and the second fixing section 304 can define an installation area, at least a portion of the connecting plate 20 is within the installation area, or at least a portion of the connecting plate 20 and the reinforcing plate 40 are arranged within the installation area; wherein, the thickness of the first fixing section 302 is greater than or equal to the thickness of the connecting plate 20.

[0059] In this embodiment, the fixing plate 30 includes a first fixing section 302 and a second fixing section 304, wherein the first fixing section 302 is fixedly connected to the reinforcing plate 40, and the second fixing section 304 is fixedly connected to the base plate 10. The first fixing section 302 and the second fixing section 304 are fixedly connected and may also be integrally formed. The integrally formed structure has high mechanical properties and can further ensure the connection strength between the connecting plate 20 and the base plate 10. Furthermore, the first fixing section 302 and the second fixing section 304 define a mounting area, wherein at least a portion of the connecting plate 20 or the reinforcing plate 40 is disposed within the mounting area. In addition, the thickness of the first fixing section 302 is greater than or equal to the thickness of the connecting plate 20, that is, the thickness of the connection between the fixing plate 30 and the connecting plate 20 is greater than the thickness of the connecting plate 20, thereby further ensuring the connection strength between the connecting plate 20 and the base plate 10.

[0060] Example 5

[0061] On the basis of any of the above embodiments, the combined plate further includes: a second connecting member 60 , which reinforces the connecting plate 20 and the reinforcing plate 40 ; and a third connecting member 70 , which reinforces the second fixing section 304 and the base plate 10 .

[0062] In this embodiment, the combined plate also includes a second connecting member 60 and a third connecting member 70, wherein the second connecting member 60 reinforces the connecting plate 20 and the reinforcing plate 40, and the third connecting member 70 reinforces the second fixed section 304 and the base plate 10, further ensuring the connection strength at the connection between the connecting plate 20 and the base plate 10, thereby extending the service life of the workpiece having the combined plate.

[0063] It should be noted that the second connecting member 60 and the third connecting member 70 can be reinforced by riveting or bolting.

[0064] Example 6

[0065] On the basis of any of the above embodiments, the composite board further includes: an adhesive member, which is arranged in the installation area, and the adhesive member bonds the connecting plate 20, the fixing plate 30 and the substrate 10; or the adhesive member bonds the connecting plate 20, the reinforcing plate 40, the fixing plate 30 and the substrate 10.

[0066] In this embodiment, the connection structure also includes an adhesive, which bonds the connecting plate 20, the fixing plate 30 and the substrate 10 together, thereby fixing the connecting plate 20, the fixing plate 30 and the substrate 10 together, or the adhesive bonds the connecting plate 20, the reinforcing plate 40, the fixing plate 30 and the substrate 10 together, thereby ensuring the connection effect.

[0067] Example 7

[0068] An embodiment of the second aspect of the present invention provides an arm support, comprising at least one plate, which includes the connecting structure provided by any embodiment of the first aspect of the present invention. Therefore, the arm support has all the beneficial effects of the connecting structure provided by any of the above embodiments, which will not be repeated here.

[0069] In this embodiment, the ends of the boom are generally made of metal components, and the middle part of the boom is generally made of pultruded composite materials. Therefore, the connection structure provided in the above-mentioned first embodiment can be used for fixed connection to ensure the connection strength of the connection and enhance the service life of the boom.

[0070] Furthermore, the plate includes a top plate, a bottom plate and two side plates, which enclose a box-shaped structure. The top plate, the bottom plate and the two side plates are all combined plates, and the base plate 10 of the combined plate is located at the end of the arm.

[0071] Example 10

[0072] The third aspect of the present invention provides an operating machine having the boom provided by any embodiment of the second aspect of the present invention, or the combination plate provided by any embodiment of the first aspect of the present invention. Therefore, the operating machine has all the beneficial effects of the boom or combination plate provided by any of the above embodiments, which will not be repeated here.

[0073] Among them, the boom operation machinery can be a pump truck, a fire truck, a crane, etc.

[0074] In the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; and "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0075] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0076] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A composite panel, characterized in that: include: a substrate, wherein the substrate is a metal plate; A connecting plate, which is provided on one side of the base plate and connected to the base plate, and is a composite material plate; a fixing plate and a first connecting member, wherein the fixing plate is arranged at one end where the base plate and the connecting plate are connected, and at least a portion of the connecting plate is located between the base plate and the fixing plate; the first connecting member penetrates the fixing plate, the connecting plate, and the base plate to connect the base plate and the connecting plate; and / or, a reinforcing plate and a first connecting member, wherein the reinforcing plate is provided at one end where the connecting plate is connected to the base plate, and the reinforcing plate is located on one side of the connecting plate; The first connecting member passes through the reinforcing plate, the connecting plate and the base plate to connect the base plate and the connecting plate; The reinforcing plate comprises: a first reinforcing plate, the first reinforcing plate being fixedly connected to one side of the connecting plate; a second reinforcing plate, the second reinforcing plate being fixedly connected to the other side of the connecting plate; after the first reinforcing plate and the second reinforcing plate are respectively fixedly connected to the connecting plate, secondary curing is performed by heating or hot pressing; The fixing plate comprises: a first fixing section, the first fixing section being fixedly connected to at least a portion of the connecting plate or the reinforcing plate; a second fixing section connected to the first fixing section, the second fixing section being fixedly connected to the base plate, the first fixing section and the second fixing section being capable of defining a mounting area, at least a portion of the connecting plate being located within the mounting area, or at least a portion of the connecting plate and the reinforcing plate being located within the mounting area; Wherein, the thickness of the first fixing section is greater than or equal to the thickness of the connecting plate; The combined board also includes: a second connecting member, the second connecting member reinforcing the connecting plate and the reinforcing plate; A third connecting member is used to reinforce the second fixing section and the base plate.

2. The composite board according to claim 1, characterized in that The connecting plate and / or the reinforcing plate are provided with a plurality of composite material layers; wherein the connecting plate comprises: A first ply, wherein the first ply is a 0° ply and accounts for 80% to 90% of the total ply; A second ply, wherein the second ply is a 45° ply or a -45° ply; a third ply, the third ply being a 90° ply, the second ply and the third ply accounting for 10% to 20% of the total ply; and / or the reinforcing plate comprising: a fourth ply, wherein the fourth ply is a 45° ply or a -45° ply, and the fourth ply accounts for 80% to 90% of the total number of plies; a fifth ply, wherein the fifth ply is a 0° ply; The sixth ply is a 90° ply, and the fifth ply and the sixth ply account for 10% to 20% of the total ply amount.

3. The composite panel according to claim 1, characterized in that The connecting plate is one or more of a resin-based carbon fiber reinforced composite plate, a resin-based glass fiber reinforced composite plate, a resin-based spunbond fiber reinforced composite plate, a resin-based boron fiber reinforced composite plate, a resin-based graphite fiber reinforced composite plate, and a metal-based and ceramic-based composite plate.

4. The composite panel according to claim 1, characterized in that The combined board also includes: an adhesive member, disposed in the installation area, for bonding the connecting plate, the fixing plate, and the base plate; or The adhesive member bonds the connecting plate, the reinforcing plate, the fixing plate and the base plate.

5. A boom, comprising at least one plate, characterized in that: The board material comprises the composite board according to any one of claims 1 to 4.

6. The boom according to claim 5, characterized in that: The plate comprises a top plate, a bottom plate and two side plates, which enclose a box-shaped structure. The top plate, the bottom plate and the two side plates are all combined plates, and the base plate of the combined plate is located at the end of the arm.

7. A working machine, comprising a main body, characterized in that: It further comprises the boom as claimed in claim 5 or 6, wherein the boom is arranged on the main body; or the operating machine further comprises the combined plate as claimed in any one of claims 1 to 4, wherein the combined plate is located on the main body.

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