CN103682668B - Bending-forming-based parabolic cylinder antenna reflector and method for reflector to achieve parabolic cylinder - Google Patents

Abstract

The invention discloses a bending-forming-based parabolic cylinder antenna reflector and a method for the reflector to achieve a parabolic cylinder, and belongs to the technical field of satellite-borne antennae. The problems that satellite-borne parabolic cylinder antennae are heavy, large in size after being curved, small in rigidity and low in face forming accuracy are solved. The bending-forming-based parabolic cylinder antenna reflector comprises a mandrel, a supporting plate, a film reflector, a film inflating tube, elastic buckles and a hauling cable. The method for the bending-forming-based parabolic cylinder antenna reflector to achieve the parabolic cylinder includes the steps that first, an air tank and other inflating devices are used for inflating the film inflating tube through an inflating opening, then, the hauling cable is rolled and shrunken through a motor and the like to combine the elastic buckles, the supporting plate and the film reflector bend along with combining of the elastic buckles so that the parabolic cylinder can be formed, and finally, the supporting plate and the film inflating tube are toughened through ultraviolet irradiation. The bending-forming-based parabolic cylinder antenna reflector is used as a satellite-borne antenna reflector.

Description

Reflecting Surface of Parabolic Cylindrical Antenna Based on Press-bending Forming and Its Realization Method of Parabolic Cylindrical

technical field

The invention belongs to the technical field of space-borne antennas, and in particular relates to a parabolic cylinder antenna reflection surface based on press-bending forming and a method for realizing the parabolic cylinder.

Background technique

While maintaining a high parabolic surface accuracy, the spaceborne parabolic antenna needs to achieve low overall weight, high structural reliability, rollable folding and controllable deployment. The following problems exist in the current space-borne parabolic antenna:

1. The reflective surface of the parabolic antenna unfolded by the hinge needs to introduce a large structure weight, and the volume is large after curling, and the shape and surface accuracy are not easy to maintain;

2. The reflective surface of the parabolic antenna deployed by the high-precision guide belt has the disadvantages of low overall rigidity and low shape precision.

Contents of the invention

The object of the present invention is to provide a parabolic antenna reflective surface and its Realize the method for parabolic cylinder, its technical scheme is as follows:

A parabolic cylindrical antenna reflecting surface based on press bending, which includes a mandrel, a support plate, a film reflector, a film inflatable tube, an elastic buckle and a traction rope; the mandrel has two, and the two mandrels adopt Semi-circular carbon fiber tube; there are two support plates, the two support plates are made of carbon fiber reinforced hardenable epoxy resin material, the two support plates gradually widen from one end to the other end, and the two support plates are fixedly connected to the two cores Between the shafts, a matching block is provided at the connection between the support plate and the mandrel, and the reflective surface of the film is bonded to the surface of the support plate; the film inflatable tube is made of aramid fiber reinforced hardenable epoxy resin material, There are two film inflatable tubes, both ends of the two film inflatable tubes are closed, and the two film inflatable tubes are respectively arranged on both sides of the film reflective surface, and the left ends of the two film inflatable tubes are rotatably connected with the two ends of a mandrel , and an inflation port is provided at the left end of the two film inflation tubes; there are two elastic buckles, the elastic buckles contain a socket and an elastic plug, and the sockets of the two elastic buckles are respectively fixed to the right ends of the two film inflation tubes connection, the elastic plugs of the two elastic buckles are respectively connected to the two ends of the other mandrel, and guide tubes are arranged on the two elastic plugs; the two ends of the traction rope are respectively guided from the two elastic plugs. The tube passes through and connects with the socket.

A method for realizing a parabolic cylinder based on a parabolic cylindrical antenna reflective surface formed by pressing and bending. First, use an inflatable device such as an air tank to inflate the film inflatable tube through the inflatable port, and then use a motor to roll and shrink the traction rope, and the elastic buckle Combined, the support plate and the film reflective surface are bent to form a parabolic cylinder, and finally the support plate and the film inflatable tube are rigidified by ultraviolet irradiation.

The beneficial effects of the present invention are: reliable structure, small introduction weight of the overall structure, small volume after curling, high precision of the reflective surface after bending forming, and high rigidity and stability.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of a mandrel and a matching block in the present invention;

Fig. 3 is a schematic diagram of the present invention after molding.

Detailed ways:

Referring to Fig. 1, Fig. 2 and Fig. 3, a parabolic cylindrical antenna reflecting surface based on press-bending molding includes a mandrel 1, a support plate 2, a film reflecting surface 3, a film inflating tube 4, an elastic buckle 5 and a traction Rope 6; there are two mandrels 1, and the two mandrels 1 are semi-circular carbon fiber tubes; there are two support plates 2, and the two support plates 2 are made of carbon fiber reinforced hardenable epoxy resin material, two The support plate 2 gradually widens from one end to the other end, and the two support plates 2 are fixedly connected between the two mandrels 1, and a matching block 1-1 is provided at the connection between the support plate 2 and the mandrel 1, and the film The reflective surface 3 is bonded to the surface of the support plate 2; the film inflatable tube 4 is made of aramid fiber reinforced hardenable epoxy resin material, and there are two film inflatable tubes 4, and the two ends of the two film inflatable tubes 4 are closed , two film inflatable tubes 4 are respectively arranged on both sides of the film reflective surface 3, the left ends of the two film inflatable tubes 4 are rotationally connected with the two ends of a mandrel 1, and the left ends of the two film inflatable tubes 4 are provided with Inflatable port 4-1; the elastic buckle 5 has two, the elastic buckle 5 includes a socket 5-1 and an elastic plug 5-2, and the socket 5-1 of the two elastic buckles 5 are respectively connected with two film inflation tubes The right end of 4 is fixedly connected, and the elastic plugs 5-2 of the two elastic buckles 5 are respectively connected to the two ends of the other mandrel 1 in rotation, and the two elastic plugs 5-2 are provided with guide tubes 5-2- 1. The two ends of the traction rope 6 respectively pass through the guide pipes 5-2-1 of the two elastic plugs 5-2 and are connected to the socket 5-1.

A method for realizing a parabolic cylinder based on a parabolic cylindrical antenna reflective surface formed by pressing and bending. First, use an inflation device such as an air tank to inflate the film inflation tube 4 through the inflation port 4-1, and then use a motor to roll and shrink the traction rope 6. Combining the elastic buckle 5, the support plate 2 and the film reflective surface 3 are bent to form a parabolic cylinder, and finally the support plate 2 and the film inflatable tube 4 are hardened by ultraviolet irradiation.

The principle of the invention: the support plate 2 and the film inflatable tube 4 of the present invention are made of hardenable materials, which can be curled and are easy to carry. After being unfolded to form a parabolic cylinder, they can be hardened by irradiating ultraviolet light to increase stability. The mandrel 1 adopts a semi-circular tube, and is connected and fixed with the support plate 2 through the matching block 1-1, which has the advantages of convenient and firm connection, small structural weight, and good curling effect.

Claims (2)

1. A parabolic cylindrical antenna reflector based on press-bending molding, characterized in that it comprises a mandrel (1), a support plate (2), a film reflector (3), a film inflatable tube (4), an elastic buckle (5) and traction rope (6); said mandrel (1) has two, and two mandrels (1) adopt semicircular carbon fiber tube; Described support plate (2) has two, two support plates ( 2) Using carbon fiber reinforced hardenable epoxy resin material, the two support plates (2) gradually widen from one end to the other end, and the two support plates (2) are fixedly connected between the two mandrels (1). A matching block (1-1) is provided at the junction of the board (2) and the mandrel (1), and the film reflection surface (3) is bonded to the surface of the support plate (2); the film inflation tube (4 ) adopts aramid fiber reinforced hardenable epoxy resin material, there are two film inflation tubes (4), both ends of the two film inflation tubes (4) are closed, and the two film inflation tubes (4) are respectively arranged on the film On both sides of the reflecting surface (3), the left ends of the two film inflation tubes (4) are rotationally connected with the two ends of a mandrel (1), and the left ends of the two film inflation tubes (4) are provided with inflation ports ( 4-1); There are two elastic buckles (5), and the elastic buckles (5) include sockets (5-1) and elastic plugs (5-2), and the sockets of the two elastic buckles (5) ( 5-1) are respectively fixedly connected to the right ends of the two film inflatable tubes (4), and the elastic plugs (5-2) of the two elastic buckles (5) are respectively connected to the two ends of the other mandrel (1) in rotation , guide pipes (5-2-1) are arranged on the two elastic plugs (5-2); 5-2-1) pass through and connect with the socket (5-1). 2. A method for realizing a parabolic cylinder based on a parabolic cylinder antenna reflector formed by press bending, is characterized in that an air tank inflation device is first used to inflate the film inflation tube (4) through the inflation port (4-1), and then Use the motor to roll and shrink the traction rope (6), combine the elastic buckle (5), the support plate (2) and the film reflective surface (3) are bent to form a parabolic cylinder, and finally the support plate (2) is irradiated with ultraviolet light And film inflation tube (4) stiffening.