CN214542486U

CN214542486U - Portable deployable parabolic antenna

Info

Publication number: CN214542486U
Application number: CN202120741841.3U
Authority: CN
Inventors: 胡超然; 曹喜滨; 冯宇斐; 张骥鹞; 韦明川; 郭金生; 王峰
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-10-29
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a portable deployable parabolic antenna, parabolic antenna includes: the parabolic reflector is arranged on the parabolic antenna and comprises a fixed part, a plurality of ribs which are connected with the fixed part and are uniformly distributed along the circumferential direction of the parabolic antenna, a parabolic reflector, a feed source arranged on the focus of the reflector, a feed source support connected with the fixed part and a movable part coaxially arranged with the fixed part; wherein: the movable component is sleeved on the feed source support and can move towards the direction close to the fixed component along the length direction of the feed source support until the plurality of ribs are pressed tightly, so that the parabolic antenna can be unfolded; or the movable part can move along the length direction of the feed source support towards the direction far away from the fixed part until the parabolic antenna can be completely folded.

Description

Portable deployable parabolic antenna

Technical Field

The utility model relates to the field of communication technology, especially, relate to a portable deployable parabolic antenna.

Background

An antenna is a converter for converting a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space), or vice versa. Antennas are components used in radio equipment to transmit or receive electromagnetic waves, and systems that use electromagnetic waves for information transfer, in particular, engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy, etc., all need to rely on antennas for their operation.

The antenna can be divided into a line antenna and a surface antenna according to the structural form and the working principle; the area antenna may be divided into a plate antenna, a yagi antenna, a parabolic antenna, etc. As is well known, a parabolic antenna has the narrowest lobe width, the highest gain, and the farthest signal propagation distance compared to other surface antennas, and when it is not convenient to install communication facilities in a short distance such as a fire, a flood disaster, and a nuclear leakage lamp, the parabolic antenna is often used to remotely place emergency communication radio signals, and the parabolic antenna is very practical in an area requiring long-distance coverage communication such as a highway, a railway, a long tunnel, and a river.

However, most of the existing deployable parabolic antennas are large motor-driven vehicle-mounted or ship-mounted systems, and due to the limitations of large size, motor driving and the like, additional equipment is required to be used for furling or deploying every time.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problem, embodiments of the present invention provide a portable deployable parabolic antenna; the unfolding, locking and folding operations of the parabolic antenna can be realized only through manual operation of a single person without external energy source driving.

The technical scheme of the utility model is realized like this:

an embodiment of the utility model provides a portable deployable parabolic antenna, parabolic antenna includes: the parabolic reflector is arranged on the parabolic antenna and comprises a fixed part, a plurality of ribs which are connected with the fixed part and are uniformly distributed along the circumferential direction of the parabolic antenna, a parabolic reflector, a feed source arranged on the focus of the reflector, a feed source support connected with the fixed part and a movable part coaxially arranged with the fixed part; wherein:

the movable component is sleeved on the feed source support and can move towards the direction close to the fixed component along the length direction of the feed source support until the plurality of ribs are pressed tightly, so that the parabolic antenna can be unfolded;

or the movable part can move along the length direction of the feed source support towards the direction far away from the fixed part until the parabolic antenna can be completely folded.

The embodiment of the utility model provides a portable deployable parabolic antenna; the unfolding and folding of the parabolic antenna can be realized through the movement of a movable component in the parabolic antenna; the embodiment of the utility model provides an in parabolic antenna can realize that the one hand is expanded or draw in, convenient operation under the condition that does not have any additional energy.

Drawings

Fig. 1 is a schematic structural view of a parabolic antenna according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a portable deployable parabolic antenna according to an embodiment of the present invention.

Fig. 3 is a schematic view of a folded state of the parabolic antenna according to the embodiment of the present invention.

Fig. 4 is a schematic view illustrating a connection between a fixing member and a plurality of ribs according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of a fixing member according to an embodiment of the present invention.

Fig. 6 is a schematic view of a locking mechanism according to an embodiment of the present invention.

Fig. 7 is a schematic view of a folding and unfolding mechanism of a portable deployable parabolic antenna according to an embodiment of the present invention.

Fig. 8 is a schematic flow chart illustrating a folding and unfolding method of a portable deployable parabolic antenna according to an embodiment of the present invention.

Detailed Description

In order to illustrate embodiments of the present invention or technical solutions in the prior art more clearly, the following description will be made in conjunction with the accompanying drawings in embodiments of the present invention to describe the technical solutions in the embodiments of the present invention clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the parabolic antenna PA1 refers to a planar antenna composed of a parabolic reflector 10 and a feed 20 mounted on the reflector 10 via a feed holder 30 and located at a focal point F of the reflector 10. In general, the reflector 10 is a metal paraboloid of revolution, a cut paraboloid of revolution, or a cylindrical paraboloid, and the feed 20 is a horn feed or a dipole feed. When transmitting a signal, the signal radiates from the feed 20 to the reflector 10, reflects off the reflector 10 and radiates into the air. Because the feed source 20 is positioned on the focal point F of the reflector 10, the electromagnetic waves are reflected by the reflector 10 and then radiate in parallel along the normal direction; when receiving, after the signal is reflected by the reflector 10, the electromagnetic wave is converged to the feed source 20, and the feed source 20 can receive the maximum signal energy.

As is well known, the parabolic antenna PA1 needs to be unfolded when performing transmission or reception of signals, and the parabolic antenna PA1 can be kept unfolded when performing communication work; accordingly, when the communication job is finished, the parabolic antenna PA1 is generally folded up in order to facilitate the movement and transportation of the parabolic antenna PA 1. However, each time parabolic antenna PA1 is deployed or stowed, a powerful external drive mechanism is required.

Therefore, based on the above problem, referring to fig. 2, it is shown that an embodiment of the present invention provides a portable deployable parabolic antenna PA, which includes: a fixed member 21, a plurality of ribs 22 connected to the fixed member 21 and uniformly distributed along the circumferential direction of the parabolic antenna PA, a parabolic reflector 10, a feed source 20 provided at a focal point F of the reflector 10, a feed source holder 30 connected to the fixed member 21, and a movable member 23 coaxially provided with the fixed member 21; wherein:

as shown in fig. 2, the movable part 23 is sleeved on the feed source support 30 and can move along the length direction of the feed source support 30 toward the direction close to the fixed part 21 until the plurality of ribs 22 are pressed to enable the parabolic antenna PA to be unfolded;

alternatively, as shown in fig. 3, the movable part 23 can move along the length direction of the feed source support 30 in a direction away from the fixed part 21 until the parabolic antenna PA can be completely folded.

In the parabolic antenna PA, the fixing member 21 is mainly used for connecting the respective members. For example, referring to fig. 4, a plurality of pin holes 211 are formed at the edge of the fixing member 21, and a plurality of ribs 22 are coupled to the fixing member 21 by coupling pins 401 fitted to the pin holes 211. Specifically, in a specific embodiment of the present invention, the connecting pin 401 may be an M3 standard split pin.

In the embodiment of the present invention, the number of the ribs 22 may be 18, and therefore, it is understood that the number of the connecting pin holes 211 is also 18, and the number of the connecting pins 401 connecting the fixing member 21 and the ribs 22 is also 18 accordingly.

It should be noted that, in the embodiment of the present invention, the reflector 10 may include a plurality of sub-reflecting surfaces 24, and accordingly, a plurality of sub-reflecting surface stitching grooves 221 are provided on each rib 22, so that when the parabolic antenna PA is assembled, each sub-reflecting surface 24 can be fixedly disposed on each corresponding rib 22 by the plurality of sub-reflecting surface stitching grooves 221.

It should be noted that, in the embodiment of the present invention, the plurality of sub-reflecting surface stitching grooves 221 on each rib 22 may also be configured as a row of small holes, and a stitching nylon rope sequentially passing through the small holes fixes each two sub-reflecting surfaces 24 on one rib 22, thereby configuring the reflector 10 in the parabolic antenna PA.

For the above example, as shown in fig. 3, the inner diameter of the movable member 23 is larger than the outer diameter of the feed source holder 30. It can be understood that, when the parabolic antenna PA is unfolded or folded, the movable part 23 needs to move along the length direction of the feed source support 30, and therefore, the inner diameter of the movable part 23 is slightly larger than the outer diameter of the feed source support 30.

For the above example, referring to fig. 5, a side of the fixed part 21 close to the movable part 23 is provided with a connection hole 501, and the connection hole 501 is used for connecting the fixed part 21 and the feed source support 30. It should be noted that, in the embodiment of the present invention, the connection hole 501 may be an M4 threaded hole, and in order to make the feed source support 30 and the fixing part 21 firmly connected, the number of the connection 501 may be two.

For the solution shown in fig. 2, in some examples, referring to fig. 3, preferably, the parabolic antenna PA further includes a furling rope 29, and the furling rope 29 can pass through a furling ring 222 at the end of each rib 22; wherein:

when the parabolic antenna PA is in the collapsed state, the collapsing cord 29 is fastened so as to tighten the parabolic antenna PA;

and, when the parabolic antenna PA needs to be unfolded, the gather cord 29 is unbundled so as to unfold the parabolic antenna PA.

For the solution shown in fig. 2, in some examples, referring to fig. 6, the parabolic antenna PA further includes a locking mechanism 601 for locking the movable part 23 when the parabolic antenna PA is in the unfolded state, so that the parabolic antenna PA is kept in the unfolded state for transmission and reception of communication signals.

Specifically, in the embodiment of the present invention, the locking mechanism 601 may be a screw or a fixing pin, etc. Then, as will be understood, referring to fig. 7, the movable part 23 is provided with a threaded hole 231 which cooperates with the locking mechanism 601, and when the movable part 23 presses the rib 22, the parabolic antenna PA is unfolded, and the locking mechanism 601 is locked so that the movable part 23 does not move, thereby allowing the parabolic antenna PA to maintain the unfolded state and receive and transmit communication signals; accordingly, when the communication task is completed, the parabolic antenna PA can be folded by releasing the locking mechanism 601 so that the movable member 23 moves and releases the rib 22.

For the solution shown in fig. 2, in some examples, the parabolic aerial PA further comprises: a pan/tilt head 25 and a tripod 26; wherein the content of the first and second substances,

the holder 25 is fixedly connected with the fixed part 21;

and said tripod 26 is connected to said head 25 by means of a connecting rod 27;

wherein the tripod 26 is fixedly connected with the connecting rod 27 through a screw 28.

It should be noted that, referring to fig. 5, a receiving hole 502 is disposed on a side of the fixed part 21 close to the pan/tilt head 25, and the receiving hole 502 is used for connecting the fixed part 21 and the pan/tilt head 25. Specifically, in one embodiment of the present invention, the receiving hole 502 may be a threaded hole manufactured in the British System 1/4-20.

It will be appreciated that for the above example, the pan/tilt head 25 and the link 27 are capable of relative azimuthal rotation, such that when the tripod 26 is fixed to the ground, the pan/tilt head 25 is rotated to rotate the reflector 10, thereby achieving adjustment of the communication signal reception performance.

Referring to fig. 8, a folding and unfolding method of a portable deployable parabolic antenna PA according to an embodiment of the present invention is shown, the method including:

s801: when the parabolic antenna PA is in the folded state, the folding rope 29 is loosened to naturally unfold the parabolic antenna PA under the action of gravity and operating force;

s802: moving the movable part 23 until the movable part 23 presses against the ribs, and locking the movable part 23 by the locking mechanism 601 to ensure that the parabolic antenna PA is in the unfolded state;

s803: when the communication task is completed, the locking mechanism 601 is opened and the movable member 23 is moved so that the ribs 22 are released to allow the parabolic antenna PA to be folded;

s804, the furling rope 29 is tightened to keep the parabolic antenna PA in a furled state.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A portable deployable parabolic antenna, characterized in that the parabolic antenna comprises: the parabolic reflector is arranged on the parabolic antenna and comprises a fixed part, a plurality of ribs which are connected with the fixed part and are uniformly distributed along the circumferential direction of the parabolic antenna, a parabolic reflector, a feed source arranged on the focus of the reflector, a feed source support connected with the fixed part and a movable part coaxially arranged with the fixed part; wherein:

2. The parabolic aerial of claim 1, wherein the reflector comprises a plurality of sub-reflecting surfaces.

3. The parabolic antenna according to claim 2, wherein each of the ribs is provided with a plurality of sub-reflecting surface stitching grooves for fixedly disposing each of the sub-reflecting surfaces on the corresponding rib.

4. The parabolic aerial of claim 1, characterized in that the inner diameter of the movable part is larger than the outer diameter of the feed support.

5. The parabolic aerial according to claim 1, characterized in that a side of the stationary part adjacent to the movable part is provided with a connection hole for connecting the stationary part with the feed carrier.

6. The parabolic aerial of claim 1, further comprising a gather cord capable of passing through a gather loop at a distal end of each rib; wherein:

when the parabolic antenna is in a furled state, the furling cord is fastened so as to tighten the parabolic antenna;

and when the parabolic antenna needs to be unfolded, the furling rope is unbundled so as to unfold the parabolic antenna.

7. The parabolic aerial of claim 1, further comprising a locking mechanism for locking the movable member when the parabolic aerial is in the deployed state such that the parabolic aerial remains in the deployed state for transmission and reception of communication signals.

8. The parabolic aerial of claim 1, further comprising a pan and tilt head and a tripod; wherein the content of the first and second substances,

the holder is fixedly connected with the fixed part;

the tripod is connected with the tripod head through a connecting rod;

wherein, the tripod passes through screw and connecting rod fixed connection.

9. The parabolic aerial according to claim 8, wherein a side of the fixed part close to the platform is provided with a receiving hole for connecting the fixed part and the platform.