WO2014019328A1

WO2014019328A1 - Carbon fiber layer thin shell reinforced supporting cabin

Info

Publication number: WO2014019328A1
Application number: PCT/CN2013/000097
Authority: WO
Inventors: 雷磊; 李�昊; 赵学成; 李新宽; 李茂�
Original assignee: 上海宇航系统工程研究所; 中国长城工业集团有限公司
Priority date: 2012-07-30
Filing date: 2013-01-30
Publication date: 2014-02-06
Also published as: CN102748999A

Abstract

A carbon fiber layer thin shell reinforced supporting cabin comprises a carbon fiber layer frustum cabin body (1), a carbon fiber layer middle frame (2) connected with an inner wall of the carbon fiber layer frustum cabin body, and a carbon fiber layer cap type reinforced rib (3) connected with an outer wall of the carbon fiber layer frustum cabin body; wherein the carbon fiber layer frustum cabin body comprises an upper end frame (101) arranged on a top end thereof, a lower end frame (102) arranged on a bottom end thereof, and a skin (4) which is utilized for pressing and fixing the upper end frame and the lower end frame and is laid on the outer wall of the carbon fiber layer frustum cabin body. The carbon fiber layer thin wall reinforced supporting cabin can effectively increase carrying capacity of rockets, actively improve satellite-rocket vibration environment, solve the satellite-rocket vibration response coupling problem, ensure high precision of cabin body connection face, and enable outer surfaces of the cabin body to be smooth and beautiful.

Description

Carbon fiber laminated thin shell reinforced support cabin

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a carbon fiber laminate thin shell reinforced support chamber, and more particularly to a carbon fiber laminate thin shell reinforced support chamber for use in a carrier rocket. Background technique

When the launch vehicle launches the satellite, it is necessary to use the support cabin to erect the satellite and some equipment to achieve the interface size change and overall configuration layout requirements. In the past, the model was usually implemented in a metal support compartment. Because the metal support cabin needs to pay a large weight to meet the strength and stiffness requirements, the rocket's carrying capacity is reduced, and the star arrow environment (vibration) is relatively poor.

The existing composite support cabin mostly adopts a honeycomb sandwich structure. This type of support cabin can better reduce the structural weight of the support cabin, but the honeycomb sandwich structure end frame is still formed by a metal forging machine, and at the same time, the honeycomb sandwich structure repair, etc. The operation will result in a substantial increase in the weight of the structure, and the structural weight reduction is not very obvious. Disclosure of invention

The object of the present invention is to provide a carbon fiber laminated thin shell reinforced support cabin, which can effectively improve the rocket carrying capacity, actively improve the vibration environment of the star arrow, solve the coupling problem of the vibration response of the star arrow, and ensure the high precision of the joint surface of the cabin. And make the outer surface of the cabin smooth and beautiful.

In order to achieve the above object, the present invention provides a carbon fiber laminated thin shell reinforced support chamber comprising: a carbon fiber layered truncated cone body connected in the middle of a carbon fiber layer disposed on the inner wall of the carbon fiber layered truncated cone chamber a frame, and a carbon fiber layered cap rib disposed on an outer wall of the carbon fiber layered truncated cone; wherein the carbon fiber layered truncated cone body comprises an upper end frame disposed at a top end thereof, disposed at a bottom thereof a lower end frame of the end, and a skin that presses and fixes the upper end frame and the lower end frame and is laid on the outer wall of the carbon fiber layered truncated cone chamber.

The carbon fiber layered truncated cone body is made of a carbon fiber composite material; the carbon fiber layered intermediate frame is made by carbon fiber composite material laying and molding; the carbon fiber layered cap type reinforcing rib is made of carbon fiber Made of composite materials.

The upper end frame includes a first horizontal straight section connected in sequence, a vertical straight section and a first cone section body; the first horizontal straight section is aligned with a top of the carbon fiber layered truncated cone; the vertical straight tube The segment and the first tapered section body are mated with the top outer wall of the carbon fiber layered truncated cone body, and the first cone section body is fixedly coupled to the skin.

The upper end frame and the skin are integrally molded by the female mold by the female mold, so that the upper end frame is pressed and laid on the outer wall of the carbon fiber layered truncated cone body.

The lower end frame includes a second horizontal straight section and a second tapered section main body connected in sequence; the second horizontal straight section is aligned with the bottom of the carbon fiber layered truncated cone body; the second cone section body and the carbon fiber paving The bottom outer wall of the layer truncated cone body is matched and fitted, and the second cone section body is fixedly connected to the skin.

The lower end frame and the skin are integrally molded by the female mold by the female mold, so that the skin is pressed and fixed to the lower end frame and laid on the outer wall of the carbon fiber layered truncated cone body.

The carbon fiber layered truncated cone body is provided with an operation port; the metal fiber fiber layer is arranged on the operation port, and the carbon fiber layer intermediate frame has a zigzag shape, and the first frame, the second frame ring and the third frame ring are sequentially connected. a frame ring; the second frame ring, the third frame ring and the frame ring are perpendicularly connected to each other; the first frame ring is matched with the inner wall of the carbon fiber layered truncated cone body, and is glued and The riveting is fixedly disposed on the inner wall of the carbon fiber layered truncated cone body.

The carbon fiber layup intermediate frame further comprises a first joint plate and a second joint plate, which are respectively arranged on the upper and lower surfaces of the carbon fiber layup intermediate frame by riveting.

The carbon fiber layered cap type reinforcing rib is disposed circumferentially along the carbon fiber layering truncated cone body; the connecting portions of the bottom sides of the carbon fiber layering cap type rib are fixedly disposed on the outer surface of the skin by glue, and pass The riveting is connected to the carbon fiber layered truncated cone body.

The carbon fiber-laid thin-shell reinforced support cabin provided by the invention has the following beneficial effects compared with the prior art: the upper end frame, the lower end frame and the skin are integrally molded by the female mold by using the female mold, and the guarantee cabin is ensured. The high precision of the body connection surface makes the outer surface of the cabin smooth and beautiful. In addition, the invention adopts the carbon fiber layered thin shell reinforced structure form, and the weight of the entire support cabin is reduced by more than 25%, the carrying capacity is effectively improved, and the vibration damping effect is better. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an outline view of a carbon fiber layered truncated cone body in the present invention;

Figure 2 is a perspective view of a carbon fiber layered truncated cone body in the present invention;

Figure 3 is a cross-sectional view of the upper end frame of the carbon fiber layered truncated cone body of the present invention;

Figure 4 is a cross-sectional view of the lower end of the carbon fiber layered truncated cone body of the present invention;

5A is a schematic view showing the molding of the negative mold of the carbon fiber layered truncated cone; FIG. 5B is a schematic view showing the molding of the female mold and the upper end frame; FIG. 5C is a schematic view showing the molding of the female mold and the lower end frame;

Figure 6 is a cross-sectional view showing a carbon fiber layered cap type rib according to the present invention;

Figure 7 is a cross-sectional view of the intermediate frame of the carbon fiber laminate in the present invention;

Figure 8 is a schematic view showing the assembly of the intermediate frame of the carbon fiber layer in the present invention;

Figure 9 is a schematic view showing the connection of a carbon fiber layered truncated cone body and a carbon fiber layered intermediate frame in the present invention;

Fig. 10 is a schematic view showing the connection of a carbon fiber layered truncated cone body and a carbon fiber layered hat type rib according to the present invention. The best way to implement the invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be specifically described with reference to Figs.

As shown in FIG. 1 and FIG. 2, the carbon fiber laminated thin shell reinforced support cabin provided by the present invention comprises a carbon fiber layered truncated cone body 1 connected to the inner wall of the carbon fiber layered truncated cone body 1 a carbon fiber layered intermediate frame 2, and a carbon fiber layered cap type rib 3 connected to an outer wall of the carbon fiber layered truncated cone body 1; wherein the carbon fiber layered truncated cone body 1 is disposed at the top end thereof The upper end frame 101, the lower end frame 102 disposed at the bottom end thereof, and the skin 4 which is press-fixed to the upper end frame 101 and the lower end frame 102 and laid on the outer wall of the carbon fiber laying frustum cabin 1 are provided.

As shown in FIG. 3, the upper end frame 101 includes a first horizontal straight section 11 connected in sequence, a vertical straight section 12 and a first tapered section main body 13; wherein the first horizontal straight section 11 and the carbon fiber layer are cut The top of the cone body 1 is aligned; the vertical straight section 12 and the first cone section body 13 are mated to the top outer wall of the carbon fiber layup frustum 1 and the first cone section 13 is passed The layering is decremented and fixed to the skin 4. As shown in FIG. 5A and FIG. 5B, the upper end frame 101 and the skin 4 are designed to have a variable thickness by using the female mold 5, and the other joint members are not required to be integrally molded, so that the skin 4 presses and fixes the upper end frame 101 and is laid. The carbon fiber is laid on the outer wall of the truncated cone body 1.

The lower end frame 102 includes a second horizontal straight section 14 and a second connected in sequence as shown in FIG. a tapered section body 15; wherein the second horizontal straight section 14 is aligned with the bottom of the carbon fiber layered truncated cone body 1 and the second cone section body 15 is matched with the bottom outer wall of the carbon fiber layered truncated cone body 1 Fitted, and the second tapered section body 15 is fixedly connected to the skin 4 by the layering decrement. As shown in FIG. 5A and FIG. 5C, the lower end frame 102 and the skin 4 are designed to have a variable thickness by the female mold 5, and the other joint members are not required to be integrally molded, so that the skin 4 presses and fixes the lower end frame 102 and is laid. The carbon fiber is laid on the outer wall of the truncated cone body 1.

An operation port 103 is further disposed on the carbon fiber layered truncated cone body 1 as shown in FIG. 1 and FIG. 2; and a metal frame can be mounted on the operation port 103 according to actual needs.

Further, the carbon fiber layered truncated cone body 1 is made of a carbon fiber composite material, and has a smooth appearance.

As shown in Fig. 7, the carbon fiber laminate intermediate frame 2 is formed by using a carbon fiber composite material laying mold. The carbon fiber layered intermediate frame 2 has a zigzag shape, and includes a first frame ring 21, a second frame ring 22, a third frame ring 23, and a frame ring 24 connected in sequence; wherein the second frame ring 22, The three frame ring 23 and the frame ring 24 are perpendicularly connected to each other; as shown in FIG. 9, the first frame ring 21 is matched with the inner wall of the carbon fiber layered truncated cone body 1, and is fixed by gluing and riveting. It is disposed on the inner wall of the carbon fiber layering truncated cone body 1, so that the entire carbon fiber layering intermediate frame 2 is assembled with the carbon fiber layering truncated cone body 1.

As shown in Fig. 8, the carbon fiber layup intermediate frame 2 further includes a first joint plate 25 and a second joint plate 26 which are respectively provided on the upper and lower surfaces of the carbon fiber laminate intermediate frame 2 by riveting.

The carbon fiber layered cap rib 3 is made of a carbon fiber composite material. As shown in Fig. 2, the carbon fiber layered cap type ribs 3 are disposed along the circumference of the carbon fiber layered truncated cone body. As shown in FIG. 6 and FIG. 10, the bottom connecting portions 31 of the carbon fiber layered cap type ribs 3 are fixedly disposed on the outer surface of the skin 4 by gluing, and the truncated cone body is laminated by the riveting and carbon fiber. 1 connection.

In summary, the carbon fiber laminated thin shell reinforced support cabin provided by the invention can effectively improve the rocket carrying capacity and can actively improve the vibration environment of the star arrow, thereby overcoming the prior art that the rocket support cabin structure has a relatively large weight. And the lack of coupling of the star and arrow vibration frequency.

Compared with the prior art, the invention has the beneficial effects that: the upper end frame, the lower end frame and the skin are integrally molded by the connecting piece without using the female mold, thereby ensuring the high precision of the joint surface of the cabin and making the outer body of the cabin The table is smooth and beautiful. In addition, the invention adopts the carbon fiber laminated thin shell reinforced structure form, the weight of the entire support cabin is reduced by more than 25%, the carrying capacity is effectively improved, and the vibration damping effect is better. fruit.

Although the present invention has been described in detail by the preferred embodiments thereof, it should be understood that the foregoing description should not be construed as limiting. Various modifications and alterations of the present invention will be apparent to those skilled in the art. Therefore, the scope of the invention should be limited by the appended claims.

Claims

Rights request

1. A carbon fiber-laminated thin-shell reinforced support cabin, characterized in that it includes: a carbon fiber-laminated truncated cone cabin (1), connected to the carbon fiber provided on the inner wall of the carbon fiber-laminated truncated cone cabin (1) The middle frame of the laminate (2), and the carbon fiber laminate hat-shaped reinforcing rib (3) connected to the outer wall of the carbon fiber laminate truncated cone cabin (1);

The carbon fiber laminated truncated cone cabin (1) includes an upper end frame (101) provided at its top end, a lower end frame (102) provided at its bottom end, and the upper end frame (101) and lower end frame (102) are pressed and fixed. ) and lay the skin (4) on the outer wall of the carbon fiber laminated truncated cone cabin (1).

2. The carbon fiber laminate thin-shell reinforced support cabin according to claim 1, characterized in that, the carbon fiber laminate truncated cone cabin (1) is made of carbon fiber composite material, and the carbon fiber laminate middle frame (2 ) is made by laying and molding carbon fiber composite materials; the carbon fiber layup hat-shaped reinforcing ribs (3) are made by laying out carbon fiber composite materials.

3. The carbon fiber laminate thin-shell reinforced support cabin according to claim 2, characterized in that the upper end frame (101) includes a first horizontal straight tube section (11) and a vertical straight tube section (12) connected in sequence and the first cone section body (13);

The first horizontal straight section (11) is aligned with the top of the carbon fiber layered truncated cone cabin (1); the vertical straight section (12) and the first cone section main body (13) are aligned with the carbon fiber layered truncated cone The top outer wall of the cabin (1) is matched and fitted, and the first cone section main body (13) is connected and fixed with the skin (4).

4. The carbon fiber laminate thin-shell reinforced support cabin according to claim 3, characterized in that the upper end frame (101) and the skin (4) are integrally molded without connectors using a female mold (5). , so that the skin (4) is pressed and fixed on the upper end frame (101) and laid on the outer wall of the carbon fiber layered truncated cone cabin (1).

5. The carbon fiber laminate thin-shell reinforced support cabin according to claim 2, characterized in that the lower end frame (102) includes a second horizontal straight section (14) and a second cone section main body (15) connected in sequence );

The second horizontal straight section (14) is aligned with the bottom of the carbon fiber laminated truncated cone cabin (1); the second cone section main body (15) is aligned with the bottom outer wall of the carbon fiber laminated truncated cone cabin (1) Matching and fitting, and the second cone segment body (15) is connected and fixed with the skin (4).

6. The carbon fiber laminate thin-shell reinforced support cabin according to claim 5, characterized in that, using The female mold (5) performs integrated molding of the lower frame (102) and the skin (4) without connectors, so that the skin (4) presses and fixes the lower frame (102) and lays it on the carbon fiber laminate section. on the outer wall of the conical cabin (1).

7. The carbon fiber laminated thin-shell reinforced support cabin according to claim 2, characterized in that the carbon fiber laminated truncated cone cabin (1) is provided with an operation port (103); in the operation port (103) 103) Install the metal frame on it.

8. The carbon fiber laminate thin-shell reinforced support cabin according to claim 2, characterized in that the carbon fiber laminate middle frame (2) is in a Z-shape and includes a first frame ring (21), a third frame ring (21), and a second frame ring (21) connected in sequence. The second frame ring (22), the third frame ring (23) and the configuration frame ring (24);

The second frame ring (22), the third frame ring (23) and the configuration frame ring (24) are vertically connected to each other; the first frame ring (21) and the carbon fiber laminated truncated cone cabin (1) The inner walls are matched and fitted, and are fixed on the inner wall of the carbon fiber laminated truncated cone cabin (1) through gluing and riveting.

9. The carbon fiber laminate thin-shell reinforced support cabin according to claim 8, characterized in that the carbon fiber laminate middle frame (2) also includes a first connecting plate (25) and a second connecting plate (26) , respectively set on the upper and lower surfaces of the carbon fiber laminate middle frame (2) by riveting.

10. The carbon fiber laminate thin-shell reinforced support cabin according to claim 2, characterized in that the carbon fiber laminate hat-shaped reinforcement (3) is provided circumferentially along the carbon fiber laminate truncated cone cabin (1); The connecting sections (31) on both sides of the bottom of the carbon fiber layered hat-shaped reinforcing rib (3) are fixed on the skin by gluing.

(4), and is connected to the carbon fiber laminate truncated cone cabin (1) by riveting.