Method and device for demolding and lifting of composite fairing body

Abstract

The invention relates to the technical field of demolding and lifting of composite honeycomb sandwich products, and provides a demolding and lifting method and device for a composite fairing body. The demolding and lifting device comprises a lifting lug, a first clamping piece, a second clamping piece and a lateral supporting block; the first clamping piece is arranged on one side of the lifting lug piece, the lateral supporting block is detachably fixed to the second installation face, the second clamping piece is arranged on the other side of the lifting lug piece and detachably fixed to the lateral supporting block, and the first clamping piece and the second clamping piece are connected in a fastened mode. The first clamping piece is used for being fixedly connected with a lifting tool. The fairing body lifting lug piece is simple in structure, the lifting point position can be flexibly arranged according to different products, the fastening tool is designed in a lightweight mode, the fairing body lifting lug piece is well matched with a fairing body, the installation process is simple and convenient, and the lifting process is safe and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of demoulding and lifting of composite honeycomb sandwich products, in particular to a method and a device for demoulding and lifting a composite fairing cover. Background Art

[0002] As an important new generation product in the field of space transportation, the composite fairing cover plays an important role in the rocket launch process. With the development of fairing products of different sizes, the problem of demolding and lifting the cover has gradually become prominent.

[0003] The demolding and lifting process of the existing composite material fairing cover mainly relies on the inherent structure of the cover, and the connection with the demolding tooling is achieved through adapter blocks, inserts, etc. In actual application, the fairing cover needs to be modified to a certain extent, which affects the weight of the cover. At the same time, the adapter blocks, inserts, etc. have a great influence on the structure of the product molding die, and additional interface structures need to be added, which is not conducive to the lightweight design of the molding die. Summary of the Invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a method and device for demoulding and lifting a composite material fairing cover.

[0005] According to the present invention, a device for demoulding and lifting a composite fairing cover comprises a lifting lug, a first clamping piece, a second clamping piece, and a lateral support block;

[0006] The lifting ear is formed by extending and laying the lower skin of the fairing cover. The fairing cover is provided with a second mounting surface. The first clamping piece is arranged on one side of the lifting ear. The lateral support block is detachably fixed on the second mounting surface. The second clamping piece is arranged on the other side of the lifting ear and is detachably fixed on the lateral support block. The first clamping piece is fastened to the second clamping piece, and the first clamping piece is used to be connected and fixed to the lifting tooling.

[0007] According to the present invention, a method for demoulding and lifting a composite fairing cover body includes the following steps:

[0008] Step 1: First, clamp and fix the lifting lugs with the first clamping piece and the second clamping piece, then connect the lateral support block to the fairing cover, and then connect the second clamping piece to the lateral support block, or first connect the lateral support block to the fairing cover, then clamp and fix the lifting lugs with the first clamping piece and the second clamping piece, and then connect the second clamping piece to the lateral support block;

[0009] Step 2: During the lifting process, the fairing cover is connected to the lifting fixture through the first clamping member, and the fixing effect of the lateral support block is relied upon to achieve smooth demoulding and lifting of the fairing cover body.

[0010] Preferably, before step 1 is performed, the lower skin of the fairing cover is stretched and laid to form the lifting lugs.

[0011] Preferably, the thickness of the first clamping member is the same as the thickness of the fairing cover; and / or

[0012] The thickness of the second clamping member is the same as the thickness of the lateral support block.

[0013] Preferably, the lateral support block is in contact with the lower skin of the fairing cover, and the end surface of the lateral support block is in contact with the second clamping piece.

[0014] Preferably, in step 1, the glass fiber resin prepreg is laid on the mold surface, and demolding points are arranged around the fairing cover, no less than 4 points, and the glass fiber resin prepreg of the lower skin at the demolding points is extended to the outside of the fairing cover to form lifting ears. The fairing lifting ears are fixed by fastening tooling and the fastening tooling is connected to the lifting tooling to realize vertical demolding and lifting of the fairing cover.

[0015] Preferably, the lifting lugs are rectangular glass fiber resin prepregs, the thickness of a single layer of glass fiber resin prepreg is 0.11 mm, and the molding process is an autoclave process.

[0016] Preferably, the autoclave molding conditions are: temperature 180° C., pressure 0.4 MPa, and heat preservation for 4 hours.

[0017] Preferably, the first clamping member, the second clamping member and the lateral support block are all made of Q235 steel.

[0018] Preferably, in step S1, lifting ears are arranged at the periphery of the fairing cover, respectively located at the left front, right front, left rear and right rear directions of the fairing cover, and the first clamping member and the second clamping member are fastened on both sides of the lifting ears; then the lateral support blocks are fixed to the fairing cover.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention adopts an integrally formed lifting lug around the fairing cover body, and the lifting lug is connected and fixed by a fastening tool so that the lifting lug and the fairing cover body form a whole. During the demoulding and lifting process, the load-bearing capacity of the lifting lug can ensure the smooth lifting of the fairing cover body. The fairing cover body lifting lug involved in the present invention has a simple structure and the lifting point position can be flexibly set according to different products. The fastening tool adopts a lightweight design and has good adaptability to the fairing cover body. The installation process is simple and the lifting process is safe and reliable.

[0021] 2. When the fairing cover body is laid and formed, the added lifting ears have a simple structure, are easy to lay and form, have a low impact on the structure of the fairing cover body forming mold, and can be flexibly arranged according to the product lifting requirements.

[0022] 3. The fastening fixture structure at the lifting ear of the fairing cover of the present invention is simple. By utilizing the structural characteristics of the product and ensuring the load-bearing capacity of the product in the early stage, the lifting point and the lifting fixture are connected by simply assembling the fixture, thereby improving the product turnover efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0024] Figure 1 It is a schematic diagram of the structure after the two clamping parts and the lateral support block are assembled as a whole;

[0025] Figure 2 It is a schematic diagram of the structure of the connection between the lifting lug and the fairing cover;

[0026] Figure 3 It is a schematic diagram of the structure in which two clamping parts are connected to the lifting lugs;

[0027] Figure 4 It is a structural schematic diagram of the connection between the lateral support block and the fairing cover;

[0028] Figure 5 This is a schematic diagram of the fairing cover lifting structure.

[0029] The figure shows:

[0030] Fairing cover 1;

[0031] Lug piece 11;

[0032] a first mounting surface 12;

[0033] Second mounting surface 13;

[0034] Lower skin 14;

[0035] First clamping member 2;

[0036] threaded hole 21;

[0037] Second clamping member 3;

[0038] Lateral support block 4;

[0039] Pin 41. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0041] The present invention provides a demoulding and lifting device for composite material fairing cover, such as Figures 1 to 5 As shown, it includes a lifting ear 11, a first clamping member 2, a second clamping member 3 and a lateral support block 4. The first clamping member 2 and the second clamping member 3 are preferably square blocks. The lifting ear 11 is formed by extending and laying the lower skin 14 of the fairing cover 1. The fairing cover 1 is provided with a first mounting surface 12 and a second mounting surface 13. The first mounting surface 12 is connected to the second mounting surface 13. Preferably, the first mounting surface 12 and the second mounting surface 13 are arranged vertically. The first clamping member 2 is arranged on one side of the lifting ear 11 and is close to the first mounting surface 12. The lateral support block 4 is detachably fixed on the second mounting surface 12. The second clamping member 3 is arranged on the other side of the lifting ear 11 and is detachably fixed on the lateral support block 4. The first clamping member 2 is fastened to the second clamping member 3. The first clamping member 2 is used to be connected and fixed to the lifting tooling.

[0042] Specifically, the first clamping piece 2 and the second clamping piece 3 are respectively located on both sides of the lifting ear piece 11 and are fastened together through the central through hole and screws. The thickness of the first clamping piece 2 is the same as the thickness of the fairing cover 1, and the thickness of the second clamping piece 3 is the same as the thickness of the lateral support block 4. The first clamping piece 2 is provided with a threaded hole 21, as shown in FIG. Figure 3 As shown, the lateral support blocks 4 are connected to the lifting fixture via threaded holes 21. The lateral support blocks 4 are in contact with the lower skin 14 of the fairing body 1, and the end faces of the lateral support blocks 4 are in contact with the second clamping members 3. The lateral support blocks 4 are provided with pin holes, which are used to connect and secure the lateral support blocks 4 to the embedded parts within the fairing body 1. The fairing body 1 is lifted by converting the pulling force of the fairing lifting lugs 11 into a tightening force between the lateral support blocks 4 and the fairing body 1.

[0043] The present invention also provides a method for demoulding and lifting a composite fairing cover, which includes the molding of a lifting lug 11 and the design and use of a fastening tool, and is characterized by comprising the following steps:

[0044] Step 1: Extend and lay the lower skin 14 of the fairing cover 1 to form a lifting lug 11, first clamp and fix the lifting lug 11 with the first clamping piece 2 and the second clamping piece 3, connect the lateral support block 4 to the fairing cover 1, and then connect the second clamping piece 3 to the lateral support block 4, or first connect the lateral support block 4 to the fairing cover 1, then clamp and fix the lifting lug 11 with the first clamping piece 2 and the second clamping piece 3, and then connect the second clamping piece 3 to the lateral support block 4, so as to realize the shape constraint of the first clamping piece 2 and the second clamping piece 3;

[0045] Step 2: During the lifting process, the fairing cover body 1 is smoothly demoulded and lifted by connecting it to the lifting fixture through the clamping piece 2 and relying on the fixing effect of the lateral support block 4.

[0046] Specifically, the glass fiber resin prepreg is laid on the mold surface, and demolding points are arranged around the fairing cover 1, no less than 4 points. The glass fiber resin prepreg of the lower skin 14 at the demolding points is extended to the outside of the fairing cover 1 to form a lifting ear 11. The fairing lifting ear 11 is fixed by a fastening tool and the fastening tool is connected to the lifting tool to achieve vertical demolding and lifting of the fairing cover 1.

[0047] Specifically, the lifting tab 11 is made of rectangular glass fiber resin prepreg. The glass fiber is high-strength glass fiber cloth, and the resin is a high-performance cyanate ester resin. A single layer of glass fiber resin prepreg is 0.11 mm thick and is formed in an autoclave process. The glass fiber resin prepreg is laid up in 27 layers. A through hole with a diameter of 10 mm is reserved in the center of the lifting tab 11. The autoclave molding conditions are: 180°C, 0.4 MPa, and a 4-hour hold.

[0048] The first clamping member 2 , the second clamping member 3 , and the lateral support block 4 are all made of Q235 steel. The lateral support block 4 is provided with 5 or more pin holes. The lateral support block 4 can be connected to the fairing cover body 1 through the pin holes via pins 41 .

[0049] As a technical solution of the present invention, a method for demoulding and lifting a composite fairing cover includes the following steps:

[0050] S1. Arrange four lifting lugs 11 around the fairing cover 1, located in the left front, right front, left rear, and right rear directions of the fairing cover 1, respectively. Fasten the first clamping piece 2 and the second clamping piece 3 to both sides of the lifting lug 11 with screws, and pass the screws through the reserved through holes in the middle of the lifting lug 11; fix the lateral support block 4 to the fairing cover 1, and use pins to pass through the lateral support block 4 and the embedded parts inside the fairing cover 1 to prevent the lateral support block 4 from sliding;

[0051] S2. Use fastening screws to connect the product lifting fixture to the first clamping piece 2, a total of 4 places, to fix the lifting fixture to the fairing cover body 1, and use the lifting equipment to lift the product to realize the demoulding of the fairing cover body 1.

[0052] The lifting lugs 11 of the present invention are integrated with the fairing body 1 and can be arranged at different positions of the product according to the shape and size of the product, specifically to facilitate the demoulding and lifting of the product.

[0053] The working principle of the present invention is as follows:

[0054] The present invention relies on the lifting tooling of the composite material fairing cover body 1 to optimize and clarify the cover body demoulding and lifting method.

[0055] First, using high-strength glass fiber cloth / high-performance cyanate ester resin prepreg, lifting lugs 11 are laid out along the lower skin 14 of the fairing shell 1. Four lifting lugs are laid out along the product's circumference, totaling 27 layers. A 10mm diameter through-hole is reserved in the center of the lifting lugs 11. The lifting lugs 11 and the fairing shell 1 are cured in an autoclave process at a temperature of 180°C, a pressure of 0.4 MPa, and a curing hold time of 4 hours.

[0056] Secondly, fasten the first clamping piece 2 and the second clamping piece 2 to both sides of the lifting ear piece 11 with screws, and pass the screws through the reserved through-holes in the middle of the lifting ear piece 11; fix the lateral support block 4 to the fairing cover body 1, and use pins to pass through the lateral support block 4 and the embedded parts inside the fairing cover body 1 to prevent the lateral support block 4 from sliding;

[0057] Finally, use fastening screws to connect the product lifting fixture to the first clamping piece 2, a total of 4 places, to fix the lifting fixture to the fairing cover body 1, and use the lifting equipment to lift the product to realize the demoulding of the fairing cover body 1.

[0058] It should be noted that if Figure 4 As shown, there are four pins 41 fastening between the lateral support block 4 and the fairing cover 1, so that the tooling and the fairing cover 1 are well fastened, reducing the operational safety risk.

[0059] The present invention provides lifting lugs 11 around the fairing cover 1, thereby achieving an integrated formation of the lifting lugs 11 and the fairing cover 1, which is simple to operate. By clamping the first clamping member 2, the second clamping member 2, and the lateral support block 4 of the fastening tool at the lifting lugs 11, the force form of the lifting lugs 11 is optimized. After being combined with the lifting tool, the posture of the fairing cover 1 during the lifting process is ensured to be good, and the lifting lugs 11 can withstand the weight of the fairing cover 1 and the lifting load. Moreover, the lifting lugs 11 and the fastening tool are flexible in structure and can be arranged according to the different sizes of the fairing cover 1 to meet various design requirements.

[0060] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0061] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A device for demoulding and lifting a composite material fairing cover, characterized in that: It comprises a lifting lug (11), a first clamping piece (2), a second clamping piece (3) and a lateral support block (4); The lifting lug (11) is formed by extending and laying the lower skin (14) of the fairing cover (1); a second mounting surface (13) is provided on the fairing cover (1); the first clamping member (2) is provided on one side of the lifting lug (11); the lateral support block (4) is detachably fixed on the second mounting surface (12); the second clamping member (3) is provided on the other side of the lifting lug (11) and is detachably fixed on the lateral support block (4); the first clamping member (2) is fastened to the second clamping member (3); and the first clamping member (2) is used for being connected and fixed to a lifting tool.

2. A method for demoulding and lifting a composite fairing cover, characterized in that: The steps include: Step 1: First, clamp and fix the lifting lug (11) with the first clamping piece (2) and the second clamping piece (3), then connect the lateral support block (4) to the fairing cover (1), and then connect the second clamping piece (3) to the lateral support block (4); or first connect the lateral support block (4) to the fairing cover (1), then clamp and fix the lifting lug (11) with the first clamping piece (2) and the second clamping piece (3), and then connect the second clamping piece (3) to the lateral support block (4); Step 2: During the lifting process, the fairing cover body (1) is smoothly demoulded and lifted by connecting the first clamping member (2) to the lifting fixture and relying on the fixing effect of the lateral support block (4).

3. The method for demoulding and lifting a composite material fairing cover according to claim 2, characterized in that: Before step 1 is performed, the lower skin (14) of the fairing cover (1) is stretched and laid to form the lifting lug (11).

4. The device for demoulding and lifting a composite material fairing cover according to claim 1 or the method for demoulding and lifting a composite material fairing cover according to any one of claims 2 and 3, characterized in that: The thickness of the first clamping member (2) is the same as the thickness of the fairing cover (1); The thickness of the second clamping member (3) is the same as the thickness of the lateral support block (4).

5. The device for demoulding and lifting a composite material fairing cover according to claim 1 or the method for demoulding and lifting a composite material fairing cover according to any one of claims 2 and 3, characterized in that: The lateral support block (4) is fitted with the lower skin (14) of the fairing cover (1), and the end surface of the lateral support block (4) is in contact with the second clamping piece (3).

6. The method for demoulding and lifting a composite material fairing cover according to claim 3, characterized in that: In step 1, glass fiber resin prepreg is laid on the mold surface, and demoulding points are arranged around the fairing cover (1), not less than 4 points. The glass fiber resin prepreg of the lower skin (14) at the demoulding points is extended to the outside of the fairing cover (1) to form a lifting lug (11). The fairing lifting lug (11) is fixed by a fastening tool and connected to the fastening tool and the lifting tool, so that the fairing cover (1) is vertically demoulded and lifted.

7. The device for demoulding and lifting a composite material fairing cover according to claim 1 or the method for demoulding and lifting a composite material fairing cover according to any one of claims 2 and 3, characterized in that: The lifting lug (11) is a rectangular glass fiber resin prepreg, the thickness of a single layer of glass fiber resin prepreg is 0.11 mm, and the molding process is an autoclave process.

8. The method or device for demoulding and lifting a composite material fairing cover according to claim 7, characterized in that: The autoclave molding conditions are: temperature 180°C, pressure 0.4 MPa, and heat preservation for 4 hours.

9. The device for demoulding and lifting a composite material fairing cover according to claim 1 or the method for demoulding and lifting a composite material fairing cover according to any one of claims 2 and 3, characterized in that: The first clamping piece (2), the second clamping piece (3), and the lateral support block (4) are all made of Q235 steel.

10. The method for demoulding and lifting a composite material fairing cover according to claim 2, characterized in that: In step S1, four lifting lugs (11) are arranged around the fairing cover (1), respectively located in the left front, right front, left rear, and right rear directions of the fairing cover (1), and a first clamping member (2) and a second clamping member (3) are fastened to both sides of the lifting lugs (11); then, a lateral support block (4) is fixed to the fairing cover (1).

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