CN111106423A - Short wave antenna - Google Patents

Abstract

A short wave antenna comprises a slewing mechanism, a supporting mechanism, an extending mechanism and an antenna mechanism; the swing mechanism comprises a fixed part and a rotating part connected with the fixed part; the supporting mechanism comprises a first supporting arm, a second supporting arm and a third supporting arm, wherein the second supporting arm is hinged with the first supporting arm; one end of the first supporting arm is hinged with the rotating part; the stretching mechanism comprises a first stretching arm, a second stretching arm and a third stretching arm; the first stretching arm is hinged with one end of the third supporting arm far away from the second supporting arm; the second stretching arm and the third stretching arm are respectively hinged with two ends of the first stretching arm; the antenna mechanism comprises a first antenna layer and a second antenna layer, wherein the first antenna layer is arranged on the extension mechanism in a sliding mode, and the second antenna layer is arranged on the extension mechanism in a sliding mode. The short wave antenna is lifted through the first supporting arm hinged rotating piece and the second supporting arm hinged first supporting arm; the second stretching arm and the third stretching arm are respectively hinged with the first stretching arm to realize stretching; the second antenna layer and the first antenna layer are slidably arranged on the extension mechanism to adjust the distance.

Description

Short wave antenna

Technical Field

The invention relates to the technical field of communication equipment, in particular to a short wave antenna.

Background

At present, the large-scale short wave antenna that the telecommunications field was used all comprises the array that the truss girder was used to the multilayer and supports the iron tower in addition, and every layer of array is arranged according to certain rule, and the frequency band scope is wide, and available power is big, can provide super remote communication function, nevertheless also has following shortcoming: the antenna is large in size and multiple in accessories, a large scaffold needs to be built during installation, and the large scaffold needs to be dismantled after installation, so that the cost is greatly increased, the installation period is long, and the later maintenance is inconvenient; the antenna is high in height, needs professional high-altitude operation personnel for installation and maintenance, and is high in danger coefficient.

Disclosure of Invention

In view of the above, there is a need to provide a short-wave antenna that is easy to operate and can be folded and extended.

A short wave antenna comprises a slewing mechanism, a supporting mechanism, an extending mechanism and an antenna mechanism; the slewing mechanism comprises a fixed part and a rotating part connected with the fixed part; the supporting mechanism comprises a first supporting arm, a second supporting arm hinged with the first supporting arm and a third supporting arm hinged with the second supporting arm; one end of the first supporting arm is hinged with the rotating piece; the stretching mechanism comprises a first stretching arm, a second stretching arm and a third stretching arm; the first stretching arm is hinged with one end of the third supporting arm far away from the second supporting arm; the second stretching arm and the third stretching arm are respectively hinged with two ends of the first stretching arm; the antenna mechanism comprises a first antenna layer and a second antenna layer, wherein the first antenna layer is arranged on the extending mechanism in a sliding mode, and the second antenna layer is arranged on the extending mechanism in a sliding mode.

The short wave antenna realizes lifting by hinging the first support arm with the rotating part and hinging the second support arm with the first support arm; the second stretching arm and the third stretching arm are respectively hinged with the first stretching arm to realize stretching; the distance is adjusted by arranging the second antenna layer and the first antenna layer in a sliding manner on the extending mechanism. The short wave antenna has the advantages of simple structure, foldable extension and convenient installation and maintenance.

In one embodiment, the support mechanism further comprises a polarizing motive element; one end of the polarized power element is hinged with a third supporting arm, and the other end of the polarized power element is hinged with the first stretching arm; the polarized power element is used for driving the stretching mechanism to rotate around the third supporting arm.

In one embodiment, the support mechanism further comprises a first folding power element, a second folding power element, and a third folding power element; one end of the first folding power element is hinged with the rotating part, and the other end of the first folding power element is hinged with the first supporting arm; one end of the second folding power element is hinged with the first supporting arm, and the other end of the second folding power element is hinged with the second supporting arm; one end of the third folding power element is hinged with the second supporting arm, and the other end of the third folding power element is hinged with the third supporting arm.

In one embodiment, the support mechanism further comprises a first link and a second link; one end of the first connecting rod is hinged with the first supporting arm, and the other end of the first connecting rod is hinged with the second folding power element; one end of the second connecting rod is hinged with the second supporting arm, and the other end of the second connecting rod is hinged with the second folding power element.

In one embodiment, the extension mechanism further comprises a first extension power element and a second extension power element; one end of the first stretching power element is hinged with a first stretching arm, and the other end of the first stretching power element is hinged with a second stretching arm; one end of the second stretching power element is hinged with the first stretching arm, and the other end of the second stretching power element is hinged with the second stretching arm.

In one embodiment, the swing mechanism further comprises a first swing leg, a second swing leg, a third swing leg and a fourth swing leg which are respectively hinged with four corners of the fixing member; the first swing supporting leg and the third swing supporting leg are arranged at the same end of the fixing piece; the second swing supporting leg and the fourth swing supporting leg are arranged at the other end of the fixing piece.

In one embodiment, the swing mechanism further comprises a first power element, a second power element, a third power element and a fourth power element; the first power element, the second power element, the third power element and the fourth power element are respectively used for driving the first swing supporting leg, the second swing supporting leg, the third swing supporting leg and the fourth swing supporting leg to rotate.

In one embodiment, the swing mechanism further comprises a swing connecting piece and a speed reducer arranged on the rotating piece; the fixed piece and the rotating piece are respectively connected with the rotary connecting piece; the speed reducer is meshed with the rotary connecting piece.

In one embodiment, the device further comprises a control mechanism; the control mechanism is respectively in signal connection with the slewing mechanism, the supporting mechanism, the stretching mechanism and the antenna mechanism.

In one embodiment, the device further comprises a traction mechanism; the traction mechanism comprises a tractor and an axle; the tractor is detachably connected with the antenna mechanism; the axle is detachably connected with the first supporting arm.

Drawings

Fig. 1 is a schematic structural diagram of a transportation state of a short wave antenna according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a raised state of a support mechanism in the short wave antenna shown in FIG. 1;

fig. 3 is a front view of the short-wave antenna shown in fig. 1, in which the first support arm and the second support arm are completely vertical;

fig. 4 is a top view of the short-wave antenna shown in fig. 1 in a fully unfolded state of the first extending arm, the second extending arm and the third extending arm;

FIG. 5 is a top view of the short wave antenna of FIG. 1 with the antenna mechanism fully deployed;

FIG. 6 is a left side view of the extension mechanism of the short wave antenna of FIG. 1 rotated to 45 degrees;

FIG. 7 is a front view of the extension mechanism of the short wave antenna of FIG. 1 rotated 90 degrees;

FIG. 8 is a top view of the antenna structure of the short-wave antenna of FIG. 1 in an unfolded horizontally polarized state;

FIG. 9 is a front view of the short wave antenna of FIG. 1 in a vertical polarization state;

fig. 10 is a front view of the short wave antenna shown in fig. 1 with the second support arm at an elevation angle of 45 degrees.

Reference is made to the accompanying drawings in which:

a short wave antenna 100;

the traction mechanism 10, the tractor 11, the axle 12, the swing mechanism 20, the fixed member 21, the rotating member 22, the swing link 23, the first swing leg 24, the second swing leg 25, the third swing leg 26, the fourth swing leg 27, the second support power element 28, and the fourth support power element 29;

a support mechanism 30, a first support arm 31, a second support arm 32, a third support arm 33, a first folding power element 34, a second folding power element 35, a third folding power element 36, a first link 37, a second link 38, a polarization power element 39;

the antenna comprises an extension mechanism 40, a first extension arm 41, a second extension arm 42, a third extension arm 43, a first extension power element 44, a second extension power element 45, an antenna mechanism 50, a first antenna layer 51, a second antenna layer 52, a third antenna layer 53 and a fourth antenna layer 54.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 10, a short wave antenna 100 according to an embodiment of the present invention includes a pulling mechanism 10, a rotating mechanism 20, a supporting mechanism 30, an extending mechanism 40, and an antenna mechanism 50; the short wave antenna of the invention is hinged with the slewing mechanism 20 through the supporting mechanism 30 to realize lifting; the stretching mechanism 40 realizes the stretching and retracting; the distance is adjusted by slidably mounting the antenna mechanism 50 to the extending mechanism 40.

As shown in fig. 1, in the present embodiment, for convenience of transportation, the short wave antenna 100 includes a traction mechanism 10; the traction mechanism 10 includes a tractor 11 and an axle 12. Optionally, the tractor 11 is a trailer head and provides traction for the whole vehicle to run on the road, so that the whole vehicle can run at a running speed of 80 km/h; the axle 12 is a two-axle and adopts 8 truck tires with the diameter of 1.1 m. Further, the tractor 11 is detachably connected to the antenna mechanism 40.

As shown in fig. 2 to 5, the rotating mechanism 20 includes a fixed member 21 and a rotating member 22 connected to the fixed member 21; the swing mechanism 20 further includes a swing connection member 23 and a speed reducer (not shown) disposed on the swing member 22; the fixed part 21 and the rotating part 22 are respectively connected with a rotary connecting piece 23; the speed reducer is engaged with the rotary connecting member 23 to control the rotating member 22 to rotate horizontally relative to the fixed member 21. Optionally, the swivel connection 23 is a gear; the rotation range of the rotation member 22 with respect to the fixed member 21 is 360 degrees. In order to support the fixing member 21, the swing mechanism 20 further includes a first swing leg 24, a second swing leg 25, a third swing leg 26 and a fourth swing leg 27 respectively hinged to four corners of the fixing member 21; the first swing leg 24 and the third swing leg 26 are disposed at the same end of the fixing member 21; the second swing leg 25 and the fourth swing leg 27 are disposed at the other end of the fixing member 21; first swing leg 24 moves in opposition to third swing leg 26; the second swing leg 25 moves in the opposite direction to the fourth swing leg 27. During transportation, the third swing leg 26 and the first swing leg 24 are respectively parallel to one side of the fixing member 21; the fourth swing leg 27 and the second swing leg 25 are parallel to the other side of the fixing member 21, respectively. The swing mechanism 20 further includes a first power element (not shown), a second power element (not shown), a third power element (not shown), and a fourth power element (not shown); the first power element, the second power element, the third power element and the fourth power element are respectively used for driving the first swing leg 24, the second swing leg 25, the third swing leg 26 and the fourth swing leg 27 to rotate. Alternatively, one end of the first power element is hinged to one end of the fixed member 21, and the other end is hinged to one side of the first swing leg 24; one end of the second power element is hinged with one end of the fixing part 21, and the other end is hinged with one side of the second swing supporting leg 25; one end of the third power element is hinged with one end of the fixing part 21 far away from the first swing leg 24, and the other end is hinged with one side of the third swing leg 26; one end of the fourth powered member is hinged to the end of the mount 21 remote from the second swing leg 25 and the other end is hinged to one side of the fourth swing leg 27. Furthermore, the first power element, the second power element, the third power element and the fourth power element are all oil cylinders. In order to adjust the height of the fixing member 21, the turning mechanism 20 further includes a first supporting power member (not shown), a second supporting power member 28, a third supporting power member (not shown), and a fourth supporting power member 29; the first, second, third and fourth support power elements 28, 29 are used to adjust the heights of the first, second, third and fourth swing legs 24, 25, 26 and 27, respectively; optionally, the first supporting power element, the second supporting power element 28, the third supporting power element and the fourth supporting power element 29 are respectively arranged at one end of the first swing leg 24, the second swing leg 25, the third swing leg 26 and the fourth swing leg 27 away from the fixing member 21; further, the first supporting power element, the second supporting power element 28, the third supporting power element and the fourth supporting power element 29 are all cylinders.

Referring to fig. 6, the supporting mechanism 30 includes a first supporting arm 31, a second supporting arm 32 hinged to the first supporting arm 31, and a third supporting arm 33 hinged to the second supporting arm 32; one end of the first support arm 31 is hinged with the rotating member 22; the axle 12 is detachably connected to the first support arm 31. Alternatively, the first support arm 31 is mounted on the rotation member 22 by a pin; the second support arm 32 is connected with the first support arm 31 through a pin shaft; the third support arm 33 is connected to the second support arm 32 by a pin. In order to realize the lifting, the supporting mechanism 30 further comprises a first folding power element 34, a second folding power element 35 and a third folding power element 36; one end of the first folding power element 34 is hinged with the rotating piece 22, and the other end is hinged with the first supporting arm 31; one end of the second folding power element 35 is hinged with the first support arm 31, and the other end is hinged with the second support arm 32; the third folding power element 36 has one end hinged to the second support arm 32 and the other end hinged to the third support arm 33. The first folding power element 34 is used for driving the first support arm 31 to rotate around the rotating part 22; the second folding power element 35 is used for driving the second supporting arm 32 to rotate around the first supporting arm 31; the third folding power element 36 is used for driving the third supporting arm 33 to rotate around the second supporting arm 32. Optionally, the rotation ranges of the first support arm 31 and the third support arm 33 are both 0 degree to 90 degrees; the rotation range of the second support arm 32 relative to the first support arm 31 is 0-180 degrees. Further, the first folding power element 34, the second folding power element 35, and the third folding power element 36 are all oil cylinders. The support mechanism 30 further includes a first link 37 and a second link 38; one end of the first connecting rod 37 is hinged with the first supporting arm 31, and the other end is hinged with the second folding power element 35; one end of the second connecting rod 38 is hinged with the second supporting arm 32, and the other end is hinged with the second folding power element 35; optionally, two first connecting rods 37 and two second connecting rods 38 are provided, the two first connecting rods 37 are symmetrically disposed on two sides of the first supporting arm 31, and the two second connecting rods 38 are symmetrically disposed on two sides of the second supporting arm 32; in use, the second folding power element 35 pushes and pulls the first link 37 and the second link 38 to synchronously rotate, so that the second support arm 32 rotates around the first support arm 31. In one embodiment, the support mechanism 30 further comprises a polarizing motive element 39; one end of the polarized power element 39 is hinged with the third supporting arm 33, and the other end is hinged with the stretching mechanism 40; the polarized power element 39 is used to drive the extension mechanism 40 to rotate about the third support arm 33.

In order to save space, the extending mechanism 40 includes a first extending arm 41, a second extending arm 42, and a third extending arm 43; the first stretching arm 41 is hinged with one end of the third supporting arm 33 far away from the second supporting arm 32; the second extending arm 42 and the third extending arm 43 are respectively hinged to both ends of the first extending arm 41. Alternatively, the polarized power element 39 is hinged at one end to the third support arm 33 and at the other end to the first extension arm 41; the polarized power element 39 drives the first stretching arm 41 to rotate around the third supporting arm 33; further, the rotation range of the first extending arm 41 is 0 to 90 degrees. The stretching mechanism 40 further comprises a first stretching power element 44 and a second stretching power element 45; one end of the first stretching power element 44 is hinged with the first stretching arm 41, and the other end is hinged with the second stretching arm 42; the second extending power member 45 has one end hinged to the first extending arm 41 and the other end hinged to the second extending arm 42. The first stretching power element 44 is used for driving the second stretching arm 42 to rotate around the first stretching arm 41; the second stretching power element 45 is used for driving the third stretching arm 43 to rotate around the second stretching arm 42. Alternatively, the rotation ranges of the second stretching arm 42 and the third stretching arm 43 are both 0 degree to 90 degrees. During transportation, the second stretching arm 42 and the third stretching arm 43 are respectively perpendicular to two ends of the first stretching arm 41; in operation, the first stretching arm 41, the second stretching arm 42 and the third stretching arm 43 are coaxially arranged.

In one embodiment, the antenna mechanism 50 includes a first antenna layer 51 slidably disposed on the extending mechanism 40 and a second antenna layer 52 slidably disposed on the extending mechanism 40; optionally, the first antenna layer 51 is slidably disposed on the first extending arm 41 and the second extending arm 42 through a slider; the second antenna layer 52 is slidably disposed on the first extending arm 41 and the third extending arm 43 through a slider. Further, the antenna mechanism 50 further includes a third antenna layer 53 disposed on the first antenna layer 51 side and a fourth antenna layer 54 disposed on the second antenna layer 52 side; the third antenna layer 53 is slidably disposed on the first extending arm 41 and the second extending arm 42 through a slider; the fourth antenna layer 54 is slidably disposed on the first extending arm 41 and the third extending arm 43 through a slider. The pitches of the first antenna layer 51, the second antenna layer 52, the third antenna layer 53 and the fourth antenna layer 54 are adjusted by the expansion and contraction of the first antenna layer 51, the second antenna layer 52, the third antenna layer 53 and the fourth antenna layer 54. The polarization power element 39 drives the first extending arm 41 to rotate, so as to drive the antenna mechanism 50 to rotate, and the horizontal and vertical switching of the antenna mechanism 50 is realized. During transportation, the first antenna layer 51, the second antenna layer 52, the third antenna layer 53 and the fourth antenna layer 54 are all locked on the first stretching arm 41, and the adjacent antenna layers are in a compressed state, so that the transportation size is effectively reduced, and the installation and maintenance are facilitated. In operation, the first antenna layer 51, the second antenna layer 52, the third antenna layer 53 and the fourth antenna layer 54 are all in an extended state, the first antenna layer 51 and the third antenna layer 53 are fixed to the second extension arm 42, and the second antenna layer 52 and the fourth antenna layer 54 are fixed to the third extension arm 43, so as to receive and transmit signals. In order to realize automatic control, the short-wave antenna 100 further comprises a control mechanism; the control mechanism is in signal connection with the rotation mechanism 20, the support mechanism 30, the stretching mechanism 40 and the antenna mechanism 50 respectively.

As shown in fig. 1, in the transportation state, the antenna mechanism 50 is movably connected to the tractor 11, and the axle 12 is connected to the first support arm 31 through a pin; the rotating part 22 and the fixed part 21 are at an initial angle and locked; the first swing leg 24, the second swing leg 25, the third swing leg 26 and the fourth swing leg 27 are all in a folded state; the extension mechanism 40 is in a horizontal state and locked, and the antenna mechanism 50 is mounted to the first support arm 31 in a horizontal state. After the vehicle reaches the destination, the control mechanism controls the first power element, the second power element, the third power element and the fourth power element to respectively drive the first swing leg 24, the second swing leg 25, the third swing leg 26 and the fourth swing leg 27 to be unfolded and fixed, and controls the first supporting power element, the second supporting power element 28, the third supporting power element and the fourth supporting power element 29 to extend, so that the antenna mechanism 50 and the connecting pin of the tractor 11 are separated from the tractor 11 while the fixing piece 21 is leveled, the tractor 11 runs forwards, and the antenna mechanism 50 is separated from the rotary antenna mechanism 50. The first support arm 31 and the connecting pin of the axle 12 are removed, and the axle 12 is retracted and detached from the first support arm 31.

As shown in fig. 2, the control mechanism controls the first folding power unit 34 to extend so that the first support arm 31 rotates and rises around the rotating member 22, and at the same time, the control mechanism controls the second folding power unit 35 to extend so that the second support arm 32 rotates around the first support arm 31 to unfold the second support arm 32. Meanwhile, the control mechanism controls the third folding power element 36 to extend, so that the third supporting arm 33 rotates around the second supporting arm 32 to unfold the third supporting arm 33, and in the process, the control mechanism controls the three power elements, namely the first folding power element 34, the second folding power element 35 and the third folding power element 36, to cooperatively work, so that the antenna mechanism 50 is kept in a horizontal state in the process of slowly ascending. As shown in fig. 3, after the first folding power element 34, the second folding power element 35, and the third folding power element 36 are fully extended, the process of raising the arm of the support mechanism 30 and the antenna mechanism 50 is completely completed, the support mechanism 30 is perpendicular to the upper plane of the rotation member 22, and the antenna mechanism 50 is in a horizontal state.

As shown in fig. 4, after the support mechanism 30 is raised and the antenna mechanism 50 is raised, the control mechanism controls the first stretching power element 44 and the second stretching power element 45 to stretch, and drives the second stretching arm 42 and the third stretching arm 43 to rotate around the first stretching arm 41, respectively; after the second stretching arm 42 and the third stretching arm 43 are completely stretched, the first stretching arm 41, the second stretching arm 42 and the third stretching arm 43 are in a straight line. Next, as shown in fig. 5, under the action of the cable reel and the steel cable, the first antenna layer 51 and the third antenna layer 53 slide and unfold along the first stretching arm 41 and the second stretching arm 42, respectively; the second antenna layer 52 and the fourth antenna layer 54 slide and unfold along the first extending arm 41 and the third extending arm 43, respectively. After the antenna mechanism 50 is completely unfolded, the distance between the antenna layers is equal, and the control mechanism controls the locking pin between each antenna layer and the stretching mechanism 40 to move, so that the antenna layers and the stretching mechanism 40 are in a locking state.

The control mechanism controls the extension of the polarized power element 39 to drive the first extension arm 41 to rotate around the third support arm 33, as shown in fig. 6, which is a schematic diagram of the extension mechanism 40 rotating to 45 degrees; as shown in fig. 7, the control mechanism controls the polarization power element 39 to continue to extend until the polarization power element 39 is fully extended; after the polarization power element 39 is completely extended, the antenna mechanism 50 is in a horizontal state, and at the moment, the control mechanism controls the electric push rods in each antenna layer to extend, so that the antenna is gradually unfolded; as shown in fig. 8, after the deployment is completed, the corresponding device is connected, and then the remote communication can be performed. The control mechanism controls the speed reducer to work, so as to drive the antenna mechanism 50 to rotate within a range of 360 degrees, and the angle of the antenna mechanism 50 can be adjusted according to a communication destination. As shown in fig. 9, after the antenna mechanism 50 is completely deployed, the control mechanism controls the polarization power element 39 to retract, so that the antenna mechanism 50 slowly changes from the horizontal polarization state to the vertical polarization state, and after the polarization power element 39 is completely retracted, signal transmission is performed, thereby solving the problem of short-distance communication of the antenna mechanism 50. After the antenna mechanism 50 is completely unfolded, the control mechanism controls the second supporting arm 32 to retract, and the second folding arm 32 is slowly folded to drive the antenna mechanism 50 to rotate; as shown in fig. 10, which is a schematic view of the second supporting arm 32 in a state of an elevation angle of 45 degrees, after the second folding arm 32 is retracted for a certain distance, signal transmission is performed, which can solve a part of the short-distance communication problem of the antenna mechanism 50. The folding process is the reverse of the unfolding process and will not be described in detail.

It should be noted that the structure proposed by the short-wave antenna 100 is analyzed and verified by an ADAMS mechanism simulation and a pro mechanism analysis module, and therefore, the operation is only required to be performed according to the operation rules during the movement process.

The short wave antenna 100 of the invention realizes the lifting through the first supporting arm 31 hinged with the rotating part 22 and the second supporting arm 32 hinged with the first supporting arm 31; the second stretching arm 42 and the third stretching arm 43 are respectively hinged to the first stretching arm 41 to realize stretching; the distance is adjusted by sliding the second antenna layer 52 and the first antenna layer 51 on the extending mechanism 40. The short wave antenna 100 is simple in structure, foldable, extensible, and convenient to install and maintain.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A short wave antenna is characterized by comprising a slewing mechanism, a supporting mechanism, a stretching mechanism and an antenna mechanism; the slewing mechanism comprises a fixed part and a rotating part connected with the fixed part; the supporting mechanism comprises a first supporting arm, a second supporting arm hinged with the first supporting arm and a third supporting arm hinged with the second supporting arm; one end of the first supporting arm is hinged with the rotating piece; the stretching mechanism comprises a first stretching arm, a second stretching arm and a third stretching arm; the first stretching arm is hinged with one end of the third supporting arm far away from the second supporting arm; the second stretching arm and the third stretching arm are respectively hinged with two ends of the first stretching arm; the antenna mechanism comprises a first antenna layer and a second antenna layer, wherein the first antenna layer is arranged on the extending mechanism in a sliding mode, and the second antenna layer is arranged on the extending mechanism in a sliding mode.

2. The short wave antenna of claim 1, wherein the support mechanism further comprises a polarization motive element; one end of the polarized power element is hinged with a third supporting arm, and the other end of the polarized power element is hinged with the first stretching arm; the polarized power element is used for driving the stretching mechanism to rotate around the third supporting arm.

3. The short wave antenna of claim 1, wherein the support mechanism further comprises a first folding power element, a second folding power element, and a third folding power element; one end of the first folding power element is hinged with the rotating part, and the other end of the first folding power element is hinged with the first supporting arm; one end of the second folding power element is hinged with the first supporting arm, and the other end of the second folding power element is hinged with the second supporting arm; one end of the third folding power element is hinged with the second supporting arm, and the other end of the third folding power element is hinged with the third supporting arm.

4. The short wave antenna of claim 3, wherein the support mechanism further comprises a first link and a second link; one end of the first connecting rod is hinged with the first supporting arm, and the other end of the first connecting rod is hinged with the second folding power element; one end of the second connecting rod is hinged with the second supporting arm, and the other end of the second connecting rod is hinged with the second folding power element.

5. The short wave antenna of claim 1, wherein the extension mechanism further comprises a first extension power element and a second extension power element; one end of the first stretching power element is hinged with a first stretching arm, and the other end of the first stretching power element is hinged with a second stretching arm; one end of the second stretching power element is hinged with the first stretching arm, and the other end of the second stretching power element is hinged with the second stretching arm.

6. The short-wave antenna of claim 1, wherein the swivel mechanism further comprises a first swing leg, a second swing leg, a third swing leg, and a fourth swing leg hinged to four corners of the fixing member, respectively; the first swing supporting leg and the third swing supporting leg are arranged at the same end of the fixing piece; the second swing supporting leg and the fourth swing supporting leg are arranged at the other end of the fixing piece.

7. The short wave antenna of claim 6, wherein the slewing mechanism further comprises a first power element, a second power element, a third power element, and a fourth power element; the first power element, the second power element, the third power element and the fourth power element are respectively used for driving the first swing supporting leg, the second swing supporting leg, the third swing supporting leg and the fourth swing supporting leg to rotate.

8. The short-wave antenna of claim 1, wherein the slewing mechanism further comprises a slewing connection and a speed reducer disposed on the slewing element; the fixed piece and the rotating piece are respectively connected with the rotary connecting piece; the speed reducer is meshed with the rotary connecting piece.

9. The short wave antenna of claim 1, further comprising a control mechanism; the control mechanism is respectively in signal connection with the slewing mechanism, the supporting mechanism, the stretching mechanism and the antenna mechanism.

10. The short wave antenna of claim 1, further comprising a pulling mechanism; the traction mechanism comprises a tractor and an axle; the tractor is detachably connected with the antenna mechanism; the axle is detachably connected with the first supporting arm.

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