CN100453404C - Inflatable expansion support rod for super long space - Google Patents

Abstract

The utility model relates to an inflatable expansion support rod for super-long space, which relates to an expansion structure applied in space. It solves the problems of low folding efficiency and inability to construct large-scale spatial structures in existing mechanical unfolding structures. The inner tube (1) is placed inside the outer tube (2), the two end caps (3) are respectively sealed and connected to the two ends of the inner tube (1) and the outer tube (2), and the inner tube (1 ) and the outer tube (2) are film materials, the rigid strip (5) is fixed on the inner surface of the outer tube (2), and the sticky strip (6) is fixed on the outer surface of the outer tube (2), The length L of the support rod is 10-100 m. The invention is stored in a folded state, and has the advantages of light weight and high folding efficiency, and the pipe can not be limited by size, thereby realizing the production of super long size. In space, the present invention provides an effective solution for building large-scale structural components, which can be used for the deployment of large-scale space structures and supporting structures; on the ground, it can be used for the support of temporary advertising light boxes and temporary communication in complex terrain areas The support of the extended antenna and so on.

Description

Inflatable expansion support rod for super long space

technical field

The invention relates to an unfolded structure used in space.

Background technique

Due to the limitation of the effective launch load and launch volume of the launch vehicle, the requirement for the carried payload is to have a small weight and a small launch volume. Large-scale space structures are in a folded state when launched, and after being launched into orbit, they are unfolded to form the state required by their design and realize their design functions. Most of the existing unfolded structures are unfolded mechanically, which not only has high weight, but also has low folding efficiency. In addition, in order to meet the requirements of deep space exploration, for ultra-long deep space exploration structural components, traditional structural methods are even more powerless.

Contents of the invention

In order to solve the problems of high weight, low folding efficiency and inability to construct large-scale space structures existing in the existing mechanical expansion structures, the present invention provides an inflatable expansion support rod for ultra-long space, which is mainly constructed of film materials. The invention includes an inner tube, an outer tube and two cylindrical end caps, the inner tube is placed in the outer tube, each end cap has an air-filling hole in the center, and the two end caps are connected with the inner layer respectively. The two ends of the tube and the outer tube are sealed and connected, and the inner tube and the outer tube are film materials; it also includes a rigid strip and an adhesive strip, the rigid strip is fixed on the inner surface of the outer tube, and the adhesive strip is fixed On the outer surface of the outer tube, the length L of the support rod is 10-100m. The inner tube and the outer tube of the present invention are made of thin film material, folded in a curling manner, and placed in a folded state when placed in the rocket loading compartment, and after being launched into space, the tube is filled with gas through the inflation hole on the end cover , the support rod is fully expanded to reach the working state. The present invention can be used for the unfolding driving mechanism of structures such as large-diameter antennas, solar sails, solar sail panels, super-long monopole and dipole antennas, satellite truss structures, and sunshades of large-scale high-precision optical mirrors; it can also be used as structural components It is used to support cameras and other loads; on the ground, the present invention can be used for the support of temporary advertising light boxes and the support of extended antennas for temporary communication in complex terrain areas.

The outstanding advantages of the present invention are: 1. It is mainly constructed of film materials, with light weight, simple structure and convenient connection with other structures. After vacuuming, the high-efficiency folding method can occupy a small storage volume, and can be unfolded after inflation, which has the advantages of light weight and high folding efficiency. 2. Since the tube material is single and has no joints, reliable expansion can be realized, and the expansion process is easy to control. 3. According to the requirements of different deployment driving force, deployment time, mechanical properties and structural forms, corresponding structural design can be carried out to meet different usage requirements. It has strong designability and a wide range of applications. 4. It can realize ultra-long production, reaching a length of hundreds of meters, so as to meet the requirements of deep space exploration.

Performance index of the present invention is shown in the following table:

The length of the support rod 10～100m Support rod weight ≤250g Folding ratio ≥30 Compressive buckling load ≥50N 1st order frequency ≥0.6Hz Bending stiffness ≥1N-m²

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention, Fig. 2 is a sectional view of A-A of Fig. 1 , Fig. 3 is an enlarged view of a sectional view of B-B of Fig. 1 , Fig. 4 is a schematic diagram of folding of the present invention, and Fig. 5 is a structure of the nineteenth embodiment schematic diagram.

Detailed ways

Specific embodiment one: (see Fig. 1-Fig. 4) this embodiment is made up of inner layer tube 1, outer layer tube 2 and two cylindrical end caps 3, and inner layer tube 1 is placed in outer layer tube 2, each There is an air-filling hole 3-1 at the center of each end cover 3, and the two end covers 3 are respectively sealed and connected to the two ends of the inner tube 1 and the outer tube 2; the length L of the support rod is 10-100m; The inner tube 1 and the outer tube 2 are film materials.

Specific embodiment 2: (see Fig. 1-Fig. 4) The difference between this embodiment and specific embodiment 1 is that the length L of the support rod is 10-39m. Other compositions and connections are the same as in the first embodiment.

Specific embodiment 3: (see Fig. 1-Fig. 4) The difference between this embodiment and specific embodiment 1 is that the length L of the support rod is 10m. Other compositions and connections are the same as in the first embodiment.

Embodiment 4: (see Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 25m. Other compositions and connections are the same as in the first embodiment.

Embodiment 5: (see Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 39m. Other compositions and connections are the same as in the first embodiment.

Specific Embodiment 6: (See Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 40-69m. Other compositions and connections are the same as in the first embodiment.

Embodiment 7: (see Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 40m. Other compositions and connections are the same as in the first embodiment.

Embodiment 8: (see Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 55m. Other compositions and connections are the same as in the first embodiment.

Ninth Embodiment: (See Figures 1-4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 69m. Other compositions and connections are the same as in the first embodiment.

Embodiment 10: (See Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 70-100 m. Other compositions and connections are the same as in the first embodiment.

Embodiment 11: (See Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 70m. Other compositions and connections are the same as in the first embodiment.

Embodiment 12: (See Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 is that the length L of the support rod is 85m. Other compositions and connections are the same as in the first embodiment.

Specific Embodiment Thirteen: (See Figures 1-4) The difference between this embodiment and Specific Embodiment 1 is that the length L of the support rod is 100 m. Other compositions and connections are the same as in the first embodiment.

Specific Embodiment 14: (See Fig. 1-Fig. 4) The difference between this embodiment and Specific Embodiment 1 to Specific Embodiment 13 is that it adds two cassettes 4, and the outer wall of the cylinder wall of the terminal cover 3 There is an annular cassette groove 3-2 along the circumference on the surface, and the two end caps 3 are respectively placed in the ends of the two ends of the inner tube 1, and the two cassettes 4 are respectively fastened to the outer shells on the outer sides of the two end caps 3. The outer surfaces of the layer pipes 2 are respectively clamped in the cassette grooves 3-2 on the two end covers 3. Other compositions and connections are the same as those in Embodiment 1 to Embodiment 13. In this embodiment, the inner tube 1 and the outer tube 2 are fastened and connected to the outer surfaces of the two cylindrical end caps 3 through the cassette 4, and the process is simple and reliable.

Embodiment 15: (see Fig. 1-Fig. 4) The difference between this embodiment and Embodiment 1 to Embodiment 14 is that it adds a rigid strip 5, which is fixed on the inner surface of the outer tube 2 . Other compositions and connections are the same as those in Embodiment 1 to Embodiment 14. The material of the steel bar 5 added in this embodiment is high elastic steel 65Mn, and its function is to improve the bending rigidity of the pipe; parameters such as the quantity and width of the steel bar can be adjusted according to different rigidity requirements.

Specific embodiment sixteen: (see Fig. 1-Fig. 4) the difference between this embodiment and specific embodiment one to specific embodiment fifteen is that it has increased adhesive strip 6, and adhesive strip 6 is fixed on the outer surface of outer tube 2 . Other compositions and connections are the same as those in Embodiment 1 to Embodiment 15. The function of the adhesive strip 6 added in this embodiment is that the adhesive force of the adhesive strip 6 can make the tubes tightly crimped together.

Specific embodiment seventeen: (see Fig. 1-Fig. 4) the difference between this embodiment and specific embodiment one to specific embodiment sixteen is that the material of the sticky strip 6 is Velcro, and the number of sticky strips 6 is an even number And it is arranged symmetrically along the radial center line of the outer tube 2 . Other compositions and connections are the same as those in Embodiment 1 to Embodiment 16. In this embodiment, after vacuuming, the sticky strips 6 on the outer surface of the flat pipe are guaranteed to be in the upper and lower corresponding positions, and when curled, the sticky strips are aligned (as shown in FIG. 4 ). In this way, during the unfolding process of the pipe, the controllable unfolding of the pipe can be realized through the damping force provided by the sticky strips; the number and width of the sticky strips can be reasonably selected according to the requirements of different driving forces and unfolding speeds.

Embodiment 18: (See Figures 1-4) The difference between this embodiment and Embodiments 1 to 17 is that the inner tube 1 and the outer tube 2 are cylinders with equal cross-sections. Other compositions and connections are the same as those in Embodiment 1 to Embodiment 17.

Embodiment 19: (see FIG. 5 ) The difference between this embodiment and Embodiments 1 to 17 is that the inner tube 1 and the outer tube 2 are truncated cones with variable cross-sections. Other compositions and connections are the same as those in Embodiment 1 to Embodiment 17.

Claims (6)

1, extra long aerated expansion supporting rod for outer space, it comprises the termination lid (3) of inner layer pipe (1), outer tube (2) and two tubulars, inner layer pipe (1) is put in outer tube (2), the center of each termination lid (3) has air-filled pore (3-1), two terminations lid (3) is connected by sealing with the two ends of inner layer pipe (1) and outer tube (2) respectively, and inner layer pipe (1) and outer tube (2) are membraneous material; It is characterized in that it also comprises firm bar (5), stick (6), described firm bar (5) is fixed on the inside face of outer tube (2), and described stick (6) is fixed on the outside face of outer tube (2), and the length L of strut bar is 10～100m.

2, extra long aerated expansion supporting rod for outer space according to claim 1, it is characterized in that it has increased by two cassette tapes (4), the outside face upper edge circumference of the barrel of described termination lid (3) has ring-type cassette tape groove (3-2), two termination lids (3) place respectively in the termination at inner layer pipe (1) two ends, and two cassette tapes (4) are anchored on the outside face of the outer tube (2) outside two termination lids (3) respectively and are installed on two terminations lids (3) respectively and go up in the cassette tape groove (3-2).

3, extra long aerated expansion supporting rod for outer space according to claim 1 is characterized in that the material of described firm bar (5) adopts high resiliency steel 65Mn.

4, extra long aerated expansion supporting rod for outer space according to claim 1, the material that it is characterized in that described stick (6) is a velcro, the quantity of stick (6) is even number and is symmetrical arranged along the radial centre lines of outer tube (2).

5, extra long aerated expansion supporting rod for outer space according to claim 1 and 2 is characterized in that described inner layer pipe (1) and outer tube (2) are prismatic cylinder.

6, extra long aerated expansion supporting rod for outer space according to claim 1 and 2 is characterized in that described inner layer pipe (1) and outer tube (2) are the circular cone stage body of variable section.

Images