Steel-plastic composite trailer panel

Abstract

The utility model discloses a steel-plastic composite trailer body plate, which relates to the technical field of composite plates, including a foamed plastic core layer, glass fiber cloth layers are arranged on both sides of the foamed plastic core layer; a metal plate layer is arranged on the outer side of the glass fiber cloth layer; a strip-shaped longitudinal groove concave inwardly is distributed on the metal plate layer on one side, and a strip-shaped transverse groove concave inwardly is distributed on the metal plate on the other side; a groove structure matching the transverse groove or the longitudinal groove is arranged on the foamed plastic core layer; an adhesive layer is arranged between the glass fiber cloth layer and the foamed plastic core layer and the metal plate layer; a protective paint layer is arranged on the outer wall of the metal plate layer; and a reinforcing frame composed of glass fiber reinforced plastic is arranged on the edge of the foamed plastic core layer. The utility model is used to solve the problems that the existing pure metal body plates of trailers are too heavy and have poor thermal insulation effects, and the existing steel-wood composite body plates are high in cost and unstable in installation.

Description

Technical Field

[0001] The utility model relates to the technical field of composite plates, in particular to a steel-plastic composite trailer compartment plate. Background Art

[0002] The structure of the traditional semi-trailer or truck body is pure steel plate or steel-wood composite plate, and the steel door plate is made of steel plate pressed and welded, which is heavy and has complicated process.

[0003] The surface of the steel-wood composite board is a galvanized steel plate or aluminum plate, and the core plate is a plywood plate. The surface plate and the core plate are bonded with adhesive. The characteristics of the steel-wood composite board are that the inner and outer surfaces are flat and beautiful, and the weight is light. The disadvantages are that the cost is high, the surface shape of the wood board is not easy to process, and if there are lines on the surface of the steel plate, it is difficult to completely fit the core plate. In addition, the connection between the steel-wood composite board and the van or semi-trailer is not strong and is easy to loosen and detach.

[0004] Based on this, designing a trailer body panel with light weight, high anti-deformation strength and firm installation will have greater benefits for improving the safety, energy conservation, service life and other performance of semi-trailers or trucks. Utility Model Content

[0005] In view of the above problems, the utility model provides a steel-plastic composite trailer body plate, which is used to solve the problems that the existing pure metal body plates of trailers are too heavy and have poor heat insulation effect, and the existing steel-wood composite body plates are high in cost and unstable in installation.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The steel-plastic composite trailer body plate comprises a foamed plastic core layer, wherein glass fiber cloth layers are arranged on both sides of the foamed plastic core layer; a metal plate layer is arranged on the outer side of the glass fiber cloth layer; the metal plate layer on one side is provided with inwardly concave strip-shaped longitudinal grooves, and the metal plate on the other side is provided with inwardly concave strip-shaped transverse grooves; the foamed plastic core layer is provided with a groove structure that matches the transverse grooves or the longitudinal grooves; an adhesive layer is provided between the glass fiber cloth layer and the foamed plastic core layer and the metal plate layer; a protective paint layer is provided on the outer wall of the metal plate layer; and a reinforcing frame composed of glass fiber reinforced plastic is provided at the edge of the foamed plastic core layer.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The steel-plastic composite trailer body plate of the utility model can ensure that the body plate has sufficiently high strength while being lighter in weight and having a stable and reliable installation structure. Specifically, the longitudinal grooves and transverse grooves distributed at intervals are staggered on the front and back sides, and the glass fiber cloth layer is used to improve the deformation resistance of the entire body plate. The combination of the inner and outer layers of steel plates and the foamed plastic core layer can greatly reduce the weight of the body plate and improve the heat insulation effect. The door panel strength can be further improved by strengthening the frame, especially ensuring the structural stability of the body plate after installation.

[0010] As a further improvement of the above solution, the glass fiber cloth layer is a biaxial glass fiber cloth. The isomorphic biaxial glass fiber cloth can improve the deformation resistance of the entire board.

[0011] As a further improvement of the above solution, the transverse groove is a V-shaped structure. The V-shaped structure is similar to a triangle, and its structure is more stable and has stronger anti-deformation ability.

[0012] As a further improvement of the above solution, the longitudinal groove is a V-shaped structure.

[0013] As a further improvement of the above solution, gaps for placing a reinforcement frame are left between the ends of the longitudinal groove and the transverse groove and the edge of the metal plate layer.

[0014] As a further improvement of the above solution, the outer wall of the protective paint layer is provided with a protective film.

[0015] The technical effect of the above improvement is: it plays a protective role on the protective paint layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the compartment panel.

[0017] Figure 2 It is a schematic diagram of the back structure of the compartment panel.

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the compartment plate.

[0019] Figure 4 This is a schematic diagram of the installation position of the reinforcement frame.

[0020] In the figure: 1. outer wall layer; 2. inner wall layer; 3. reinforcement frame; 4. foamed plastic core layer; 5. protective paint layer; 6. protective film; 7. glass fiber cloth layer; 11. longitudinal groove; 21. transverse groove. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution, the utility model is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0022] like Figure 1-4 As shown, the specific scheme of this embodiment is: a steel-plastic composite trailer body plate, including a foamed plastic core layer 4, glass fiber cloth layers 7 are arranged on both sides of the foamed plastic core layer 4; a metal plate layer is arranged on the outside of the glass fiber cloth layer 7; a strip-shaped longitudinal groove 11 is distributed on the metal plate layer on one side, and a strip-shaped transverse groove 21 is distributed on the metal plate on the other side; a groove structure matching the transverse groove 21 or the longitudinal groove 11 is arranged on the foamed plastic core layer 4; an adhesive layer is arranged between the glass fiber cloth layer 7 and the foamed plastic core layer 4 and the metal plate layer; a protective paint layer 5 is arranged on the outer wall of the metal plate layer; a reinforcing frame 3 composed of glass fiber reinforced plastic is arranged on the edge of the foamed plastic core layer 4.

[0023] Specifically, the foamed plastic core layer 4 is composed of a mixture of high-density resin and low-density resin, and a high-density resin (HDPE) and a low-density resin (LDPE) are selected, and the mass ratio of HDPE:LDPE is in the range of 10:1 to 1:2, preferably 9:1. The model of HDPE can be, for example, 8010 or 5000S, and the LDPE can be, for example, 6634F or 2426H. The preferred pairing is that HDPE uses 8010 and LDPE uses 6634F; or HDPE uses 5000S and LDPE uses 2426H; the foaming agent is a composite foaming agent, and the foaming agent raw powder uses the commonly used AC (or ADC) foaming agent, and the chemical name is azodicarbonyl. The foamed plastic core layer 4 is molded by a mold, and a groove matching the metal plate layer needs to be formed on the surface.

[0024] Glass fiber cloth layer: Biaxial glass fiber cloth is a special glass fiber reinforced material with multi-axial and multi-layer structure. The characteristic of this material is that each layer of glass fiber cloth is sewn by poly-yarn or sewing thread to enhance its overall stability and strength.

[0025] The choice of bonding layer material, the bonding layer material is made of polymer material, the bonding layer material used in the board composite is in film form, so it is also called polymer film. After a lot of experiments, we finally chose a bonding polymer material (model Bynel-41E755) produced by DuPont of the United States as the main component of the polymer film.

[0026] Selection of metal plate material: In order to ensure the bending strength and shear strength of the composite plate, according to the classification in the National Standard of the People's Republic of China GB / T2518-2004, the structural grade 550 steel plate is preferred, or according to the classification of ASTMA653 / A653M-05, the Ss (Structural Steel) 550 grade steel plate is preferred; the steel plate is pressed so that the outer wall layer forms a longitudinal groove and the inner wall layer forms a transverse groove. The thickness of the steel plate can be 1.2mm.

[0027] Selection of protective paint layer: In order to ensure that the metal plate surface coating has high weather resistance and wind and sand abrasion resistance, Akzo silicon-modified polyester coating is preferred as the main coating material of the steel plate; after the steel plate is rolled and tempered, it is galvanized or aluminum-zinc-plated, and then the surface is painted. In order to ensure the firmness of the coating, epoxy primer is pre-coated in advance.

[0028] Protective film: A layer of 0.02mm thick polyester protective film is set on the outer wall of the protective paint layer to prevent the paint layer from being scratched and faded.

[0029] Reinforced frame structure: The reinforced frame can be made of fiberglass, formed into a rectangular frame and installed outside the foam plastic core layer, and the size matches the edge of the foam plastic core layer 4 to provide additional support and protection.

[0030] As a preferred embodiment of the above embodiment, the transverse groove 21 is a V-shaped structure. The longitudinal groove 11 is a V-shaped structure.

[0031] As a preferred embodiment of the above embodiment, a gap is left between the ends of the longitudinal groove 11 and the transverse groove 21 and the edge of the metal plate layer for placing the reinforcing frame 3 .

[0032] As a preferred embodiment of the above embodiment, a protective film 6 is provided on the outer wall of the protective paint layer 5 .

[0033] Process:

[0034] 1. A foamed plastic core layer 4 is manufactured. A groove structure matching the longitudinal groove 11 or the transverse groove 21 of the metal plate layer is pre-formed on the surface of the foamed plastic core layer 4 .

[0035] 2. A metal plate layer is manufactured, the size of which is the same as that of the compartment plate, and strip-shaped longitudinal grooves 11 and transverse grooves 21 are formed on the metal plate layer. The groove depth can be 3 mm, the width can be 10 mm, and the spacing can be 100 mm.

[0036] 3. Embed the foamed plastic core layer in the glass fiber reinforced frame and fill the embedding part with adhesive; bond the glass fiber cloth layer with polyurethane adhesive on both sides of the foamed plastic core layer 4. The glass fiber cloth layer needs to be completely bonded to the foamed plastic core layer, including the grooves on the surface of the foamed plastic core layer; then bond the metal plate layer to the outside of the glass fiber cloth layer and press it tightly.

[0037] The front side of the steel-plastic composite trailer body plate of the utility model has longitudinal grooves distributed at intervals, and the back side has transverse grooves distributed at intervals. Since the longitudinal grooves and the transverse grooves are in different directions, the front and back sides are staggered, and the deformation resistance of the entire body plate can be improved in combination with the glass fiber cloth layer. The combination of the inner and outer two layers of steel plates and the foamed plastic core layer can greatly reduce the weight of the door panel and improve the heat insulation effect. The strength of the body plate can be further improved by strengthening the frame, so that the connection and installation between the body plates are more stable.

[0038] It should be noted that, in this article, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. The above are only preferred implementations of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the utility model, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A steel-plastic composite trailer panel, comprising a foamed plastic core layer (4), characterized in that: Glass fiber cloth layers (7) are arranged on both sides of the foamed plastic core layer (4); a metal plate layer is arranged outside the glass fiber cloth layer (7); a strip-shaped longitudinal groove (11) recessed inwardly is distributed on the metal plate layer on one side, and a strip-shaped transverse groove (21) recessed inwardly is distributed on the metal plate on the other side; a groove structure matching the transverse groove (21) or the longitudinal groove (11) is arranged on the foamed plastic core layer (4); an adhesive layer is arranged between the glass fiber cloth layer (7), the foamed plastic core layer (4) and the metal plate layer; a protective paint layer (5) is arranged on the outer wall of the metal plate layer; and a reinforcing frame (3) composed of glass fiber reinforced plastic is arranged at the edge of the foamed plastic core layer (4).

2. The steel-plastic composite trailer panel according to claim 1 is characterized in that: The glass fiber cloth layer (7) is a biaxial glass fiber cloth.

3. The steel-plastic composite trailer panel according to claim 1 is characterized in that: The transverse groove (21) is a V-shaped structure.

4. The steel-plastic composite trailer panel according to claim 1, characterized in that: The longitudinal groove (11) is a V-shaped structure.

5. The steel-plastic composite trailer panel according to claim 1 is characterized in that: A gap is left between the ends of the longitudinal groove (11) and the transverse groove (21) and the edge of the metal plate layer for placing the reinforcing frame (3).

6. The steel-plastic composite trailer panel according to claim 1, characterized in that: The outer wall of the protective paint layer (5) is provided with a protective film (6).

Images