Composite material assembled cover plate structure

Abstract

The utility model belongs to the technical field of composite material manufacturing, and particularly relates to a composite material assembly cover plate structure and a preparation method thereof, the cover plate structure comprises a cover plate assembly, the cover plate assembly is a multilayer structure, and the middle part of the cover plate assembly is filled with a foam carbon fiber reinforced composite layer and an edge reinforced structure; the edge of the cover plate assembly is provided with a first connecting part used for being connected with the inner edge of a wellhead. The cover plate assembly comprises a lower skin, an edge reinforcing structure is fixedly connected to the edge of the lower skin, and a foam carbon fiber reinforcing composite layer is fixedly connected to the middle of the lower skin. And the upper skin is fixedly connected to the foam carbon fiber reinforced composite layer and the edge reinforcing structure. Compared with a traditional cover plate, the foam carbon fiber reinforced composite layer is adopted to replace a traditional solid structure, the foam carbon fiber reinforced composite layer is made of foam and carbon fibers, light weight is achieved while strength is guaranteed, and light weight of the cover plate can also be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to composite material manufacturing technical field especially relates to a kind of composite material assembly cover plate structure and preparation method thereof. BACKGROUND

[0002] In the field of construction, municipal engineering, communication, cover plate is widely used in covering various holes, grooves and the like to play the role of protection, safety and aesthetics. The traditional cover plate is usually made of metal, concrete and other materials, which has the problems of heavy weight, easy corrosion and the like. With the continuous development of material science, lightweight of cover plate is particularly important when facing large-span groove or wellhead. Therefore, to solve the above problems, we propose a kind of composite material assembly cover plate structure and preparation method thereof. SUMMARY

[0003] The utility model aims at providing a kind of composite material assembly cover plate structure and preparation method thereof to solve the above problems.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] A kind of composite material assembly cover plate structure, comprising:

[0006] Cover plate assembly, the cover plate assembly is multilayer structure, the middle part of the cover plate assembly is filled with foam carbon fiber reinforced composite layer and edge reinforcing structure;

[0007] The edge of the cover plate assembly is provided with a connecting part one for connecting with the inner edge of wellhead;

[0008] The cover plate assembly comprises:

[0009] Lower skin, the edge reinforcing structure is fixedly connected to the edge of the lower skin, and the foam carbon fiber reinforced composite layer is fixedly connected to the middle part of the lower skin;

[0010] Upper skin, fixedly connected to the foam carbon fiber reinforced composite layer and the edge reinforcing structure.

[0011] Optionally, the foam carbon fiber reinforced composite layer includes foam and a plurality of reinforcing parts, the bottom of the foam is fixedly connected to the lower skin, the top of the foam is fixedly connected to the upper skin, and the reinforcing parts are embedded in the foam.

[0012] Optionally, the reinforcing part includes a plurality of carbon fiber reinforcing ribs, and the plurality of carbon fiber reinforcing ribs are embedded in the foam after being enclosed.

[0013] Optionally, the edge reinforcing structure includes a plurality of metal pre-embedded parts, the bottom of the metal pre-embedded part is fixedly connected to the lower skin, the top of the metal pre-embedded part is fixedly connected to the upper skin, and the plurality of metal pre-embedded parts are distributed along the edge of the lower skin.

[0014] Optionally, the connecting part comprises a plurality of fixing supports fixed to the bottom of the cover plate assembly, the fixing supports are distributed along the edge of the bottom of the cover plate assembly, and the edge of the cover plate assembly is fixed with a bolt one used for being pinned with the inner edge of the well head.

[0015] Optionally, the cover plate assembly is composed of a cover plate two located in the middle and a plurality of cover plate ones arranged around the cover plate two, and the cover plate two is detachably connected with the cover plate one through a connecting part two.

[0016] Optionally, the connecting part two comprises a bolt two, one end of the bolt two is fixed with the edge of the cover plate two, and the other end of the bolt two is pinned with the edge of the cover plate one.

[0017] A preparation method of a composite material assembled cover plate structure, used for manufacturing the composite material assembled cover plate structure, comprises the following steps:

[0018] A lower skin is made of carbon fibers and is laid up;

[0019] The edge reinforcing structure and the foam carbon fiber reinforced composite layer are mounted to the lower skin;

[0020] After the upper skin is laid up on the surface of the edge reinforcing structure and the foam carbon fiber reinforced composite layer, the vacuum bag is loaded and pressurized;

[0021] The vacuum bag loaded with the cover plate assembly is pushed into a vacuum tank for heating and curing.

[0022] Optionally, the preparation of the foam carbon fiber reinforced composite layer comprises the following steps:

[0023] The cut foam is taken, a plurality of carbon fiber reinforcing ribs are laid up on the surface of the foam, the foam and the plurality of carbon fiber reinforcing ribs are loaded into a vacuum bag and pushed into a vacuum tank for heating and curing.

[0024] Compared with the prior art, the composite material assembled cover plate structure has the following advantages and technical effects:

[0025] Compared with the traditional cover plate, the foam carbon fiber reinforced composite layer is used to replace the traditional solid structure, the foam carbon fiber reinforced composite layer is made of foam and carbon fibers, the light weight is realized while the strength is ensured, and the light weight of the cover plate is also realized by selecting carbon fibers as the materials of the upper skin and the lower skin through the arrangement of the upper skin and the lower skin. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following embodiments are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 The present application is a structural schematic diagram of a cover plate one;

[0028] Figure 2 The present application is a structural schematic diagram of a cover plate one;

[0029] Figure 3 The present application is a structural schematic diagram of a cover plate one;

[0030] Figure 4 The present application is a structural schematic diagram of a cover plate one;

[0031] Figure 5 The present application is a structural schematic diagram of a cover plate one;

[0032] Figure 6 The present application is a structural schematic diagram of a cover plate one;

[0033] Figure 7 The present application is a structural schematic diagram of a cover plate one;

[0034] Figure 8 The present application is a structural schematic diagram of a cover plate one;

[0035] Figure 9 The present application is a structural schematic diagram of a cover plate one;

[0036] 1, cover plate one; 2, cover plate two; 3, latch one; 4, latch two; 5, fixed support; 6, metal embedded part; 7, foam; 8, carbon fiber reinforcing bar. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0039] Refer toFigures 1 to 9 The utility model discloses a kind of composite material assembly cover plate structures, comprising:

[0040] Cover plate assembly, cover plate assembly is multilayer structure, foam carbon fiber reinforced composite layer and edge reinforcing structure are filled in the middle part of cover plate assembly;

[0041] Cover plate assembly edge is provided with the connecting part one for being connected with well mouth inner edge;

[0042] Cover plate assembly includes:

[0043] Lower skin, edge reinforcing structure is fixedly connected in the edge of lower skin, foam carbon fiber reinforced composite layer is fixedly connected in the middle part of lower skin;

[0044] Upper skin, fixedly connected in foam carbon fiber reinforced composite layer and edge reinforcing structure.

[0045] As an optional implementation, foam carbon fiber reinforced composite layer includes foam 7 and several reinforcing parts, the bottom of foam 7 is fixedly connected with lower skin, the top of foam 7 is fixedly connected with upper skin, and the reinforcing part is embedded in foam 7.

[0046] Compared with traditional cover plate, the utility model uses foam carbon fiber reinforced composite layer to replace traditional solid structure, foam carbon fiber reinforced composite layer is made of foam and carbon fiber, realizes lightweight while guaranteeing strength, and simultaneously, through the setting of upper skin and lower skin, selecting carbon fiber as the material of upper skin and lower skin, the lightweight of cover plate can also be realized.

[0047] Foam 7 mainly plays the role of filling the internal space of cover plate and reducing product weight.

[0048] As an optional implementation, the reinforcing part includes several carbon fiber reinforcing ribs 8, and the several carbon fiber reinforcing ribs 8 are embedded in the foam 7 after being combined.

[0049] Carbon fiber reinforcing rib 8 mainly plays the role of local strengthening.

[0050] As an optional implementation, the edge reinforcing structure includes several metal embedded parts 6, the bottom of the metal embedded part 6 is fixedly connected with the lower skin, the top of the metal embedded part 6 is fixedly connected with the upper skin, and the several metal embedded parts 6 are distributed along the edge of the lower skin.

[0051] As an optional implementation, the connecting part one includes several fixed supports 5, the fixed supports 5 are fixedly connected at the bottom of the cover plate assembly, the several fixed supports 5 are distributed along the edge of the bottom of the cover plate assembly, and the edge of the cover plate assembly is fixedly connected with the bolt one 3 for being pinned with the well mouth inner edge.

[0052] The cover plate assembly and the fixed support 5 can be fixed by using a latch, the fixed support 5 can be welded at the edge of the well mouth, and the latch one 3 can be connected with the latch hole of the edge of the well mouth, so that the covering of the well mouth can be completed.

[0053] As an optional embodiment, the cover plate assembly is composed of the cover plate two 2 located in the middle and a plurality of cover plate one 1 arranged around the cover plate two 2, and the cover plate two 2 and the cover plate one 1 are detachably connected through the connecting part two.

[0054] As an optional embodiment, the connecting part two comprises a latch two 4, one end of the latch two 4 is fixed with the edge of the cover plate two 2, and the other end of the latch two 4 is pinned with the edge of the cover plate one 1.

[0055] Further, the device is composed of one cover plate two 2 and four cover plate one 1, the cover plate one 1 and the cover plate two 2 have the same layer structure, the four cover plate one 1 are arranged in the circumferential direction around the cover plate two 2 at equal intervals, and the cover plate two 2 mainly functions to connect the four cover plate one 1 which are uniformly distributed to form a whole.

[0056] The four cover plate one 1 and the cover plate two 2 are connected in the form of a latch to form a whole, one end of the latch two 4 is connected with the cover plate one 1, and the other end of the latch two 4 is connected with the cover plate two 2.

[0057] Since the structure is convenient to disassemble, when a certain cover plate one 1 or cover plate two 2 is worn out and fails, the replacement can be conveniently carried out, and the service life of the whole cover plate of the composite material is further prolonged.

[0058] The working principle of the utility model is:

[0059] A composite material assembled cover plate structure, comprising a cover plate assembly, a fixed support 5, a latch one 3 and a latch two 4, the cover plate assembly is sequentially composed of a wear-resistant rubber pad, a carbon fiber skin, a carbon fiber reinforcing rib 8, a foam 7 and a metal embedded part 6. The wear-resistant rubber pad is made of a ternary ethylene propylene rubber pad and is adhered to the upper surface of the cover plate assembly by an adhesive. The foam 7 is made of PMI foam and is machined by a numerical control machine tool, the periphery of the foam 7 is machined to be a C-shaped recess, and then the C-shaped recess is filled with the carbon fiber reinforcing rib 8, after the filling is completed, the foam 7 is sent into a vacuum tank for warming and solidification, so that the combination of the carbon fiber reinforcing rib 8 and the foam 7 is obtained. The carbon fiber skin is laid on a flat tooling, and then the combination of the carbon fiber reinforcing rib 8 and the foam 7 is placed at a suitable position, and then the skin on the upper surface of the cover plate assembly is laid and pasted, after the laying and pasting are completed, the whole cover plate is sent into a vacuum tank or an oven for integral solidification, so that a cover plate is obtained.

[0060] The fixed support 5 is made of Q345 steel and is machined by a CNC machine tool. Pin 1 3 and Pin 2 4 are machined from 45 steel as a whole and undergo heat treatment after machining.

[0061] A method for preparing a composite material assembled cover plate structure, used in the fabrication of the aforementioned composite material assembled cover plate structure, includes the following steps:

[0062] The lower skin is made of carbon fiber and then laid.

[0063] The edge reinforcement structure and foam carbon fiber reinforced composite layer are installed to the lower skin;

[0064] After the upper skin is laid on the surface of the edge reinforcement structure and the foam carbon fiber reinforced composite layer, it is placed in a vacuum bag and pressurized.

[0065] The vacuum bag containing the cover assembly is pushed into the vacuum chamber for heating and curing.

[0066] As an optional implementation method, the preparation of the foamed carbon fiber reinforced composite layer includes the following steps:

[0067] Take the cut foam 7, lay several carbon fiber reinforcing ribs 8 on the surface of foam 7, put foam 7 and several carbon fiber reinforcing ribs 8 into a vacuum bag and push it into a vacuum can for heating and curing.

[0068] The design and preparation process and methods of this device are as follows:

[0069] The material, size, distribution, and connection method of the tooling are determined based on the structure's shape, overload, and safety factor.

[0070] Both the metal embedded part 6 and the foam 7 are manufactured from sheet metal by CNC machining. Alternatively, while ensuring that the design requirements are met, they can be made into standard sizes to reduce the amount of machining, processing cycle and manufacturing difficulty.

[0071] Furthermore, the central reinforcement structure consists of several carbon fiber reinforcing ribs 8. The carbon fiber reinforcing ribs 8 are laid on the surface of the processed foam 7. The carbon fiber reinforcing ribs 8 have a U-shaped structure. After being heated and cured in a vacuum chamber, the carbon fiber reinforcing ribs 8 and the foam 7 form a foam carbon fiber reinforced composite layer.

[0072] During the preparation of the cover plate assembly, carbon fiber is first used to lay the lower skin, and then the metal embedded part 6 and the cured foam carbon fiber reinforced composite layer are embedded in it. Then the upper skin of the cover plate assembly is laid, and then a vacuum bag is used to pressurize and push it into a vacuum tank for heating and curing bonding.

[0073] The beneficial effects and advantages of this utility model are:

[0074] (1) The composite material assembly cover plate structure of the application has simple process, fast production speed, low manufacturing cost, and can solve the problems of large span, light weight and portable cover plate.

[0075] (2) The plate, standard nut and bolt used in the application all have standardized specifications and sizes, reducing the processing cycle and manufacturing difficulty.

[0076] (3) The application has simple structure, and all parts can be disassembled, facilitating maintenance and repair.

[0077] The composite material assembly cover plate structure of the application is formed by a flat tooling vacuum tank, and is fixed by bolts and nuts, having low cost, easy disassembly and good maintenance.

[0078] In the description of the application, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0079] The above embodiments only describe the preferred modes of the application, and do not limit the scope of the application. Without departing from the design spirit of the application, various modifications and improvements to the technical solutions of the application made by those skilled in the art shall fall within the protection scope determined by the claims of the application.

Claims

1. A composite assembly cover plate structure, characterized by, The utility model relates to a wellhead cover plate assembly, comprising: a cover plate assembly, which is a multilayer structure, filled with a foam carbon fiber reinforced composite layer and an edge reinforcing structure in the middle part of the cover plate assembly; the edge of the cover plate assembly is provided with a connecting part one for connecting with the inner edge of the wellhead; the cover plate assembly comprises: a lower skin, the edge reinforcing structure is fixed to the edge of the lower skin, and the foam carbon fiber reinforced composite layer is fixed to the middle part of the lower skin; an upper skin, which is fixed to the foam carbon fiber reinforced composite layer and the edge reinforcing structure.

2. The composite assembly cover plate structure of claim 1, wherein: The foam carbon fiber reinforced composite layer comprises a foam (7) and a plurality of reinforcing parts, the bottom of the foam (7) is fixed to the lower skin, the top of the foam (7) is fixed to the upper skin, and the reinforcing parts are embedded in the foam (7).

3. The composite assembly cover plate structure of claim 2, wherein: The reinforcing parts comprise a plurality of carbon fiber reinforcing ribs (8), which are embedded in the foam (7) after being enclosed.

4. The composite assembly cover plate structure of claim 1, wherein: The edge reinforcing structure comprises a plurality of metal embedded parts (6), the bottom of the metal embedded part (6) is fixed to the lower skin, the top of the metal embedded part (6) is fixed to the upper skin, and a plurality of the metal embedded parts (6) are distributed along the edge of the lower skin.

5. The composite assembly cover plate structure of claim 1, wherein: The connecting part one comprises a plurality of fixed supports (5), which are fixed to the bottom of the cover plate assembly, a plurality of the fixed supports (5) are distributed along the edge of the bottom of the cover plate assembly, and the edge of the cover plate assembly is fixed with a bolt one (3) for pin connection with the inner edge of the wellhead.

6. The composite assembly cover plate structure of claim 1, wherein: The cover plate assembly is composed of a cover plate two (2) located in the middle part and a plurality of cover plates one (1) arranged around the cover plate two (2), the cover plate two (2) and the cover plate one (1) are detachably connected through a connecting part two.

7. A composite assembly cover plate structure according to claim 6, wherein: The connecting part two comprises a bolt two (4), one end of the bolt two (4) is fixed to the edge of the cover plate two (2), and the other end of the bolt two (4) is pin-connected with the edge of the cover plate one (1).

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