Shortwave Antenna

Abstract

A shortwave antenna includes a swivel mechanism, a support mechanism, an extension mechanism and an antenna mechanism; the swivel mechanism includes a fixing member and a rotating member connected to the fixing member; the support mechanism includes a first support arm, a second support arm hinged to the first support arm and a third support arm hinged to the second support arm; one end of the first support arm is hinged to the rotating member; the extension mechanism includes a first extension arm, a second extension arm and a third extension arm; the first extension arm is hinged to an end of the third support arm away from the second support arm; the second extension arm and the third extension arm are respectively hinged to the two ends of the first extension arm; the antenna mechanism includes a first antenna layer slidably arranged on the extension mechanism and a second antenna layer slidably arranged on the extension mechanism. The shortwave antenna is lifted and lowered by hingedly connecting the first support arm to the rotating member and the second support arm to the first support arm; the second extension arm and the third extension arm are respectively hinged to the first extension arm to achieve extension and retraction; the second antenna layer and the first antenna layer are slidably arranged on the extension mechanism to adjust the distance.

Description

Technical Field

[0001] The present invention relates to the technical field of communication equipment, and in particular to a shortwave antenna. Background Art

[0002] At present, large shortwave antennas used in the field of long-distance communications are basically composed of multiple layers of arrays supported by truss beams and supporting iron towers. Each layer of arrays is arranged according to a certain pattern, with a wide frequency band and large available power, and can provide ultra-long-distance communication functions. However, they also have the following disadvantages: the antenna is large in size and has many accessories. Large scaffolding needs to be built during installation, and it needs to be dismantled after installation, which greatly increases the cost and takes a long time to install. Later maintenance is also very inconvenient; the antenna is high, and installation and maintenance require professional high-altitude workers, and the risk factor is high. Summary of the invention

[0003] Based on this, it is necessary to provide a shortwave antenna that is easy to operate and foldable and extendable to address the above problems.

[0004] A shortwave antenna comprises a swivel mechanism, a support mechanism, an extension mechanism and an antenna mechanism; the swivel mechanism comprises a fixing part and a rotating part connected to the fixing part; the support mechanism comprises a first support arm, a second support arm hinged to the first support arm and a third support arm hinged to the second support arm; one end of the first support arm is hinged to the rotating part; the extension mechanism comprises a first extension arm, a second extension arm and a third extension arm; the first extension arm is hinged to one end of the third support arm away from the second support arm; the second extension arm and the third extension arm are respectively hinged to two ends of the first extension arm; the antenna mechanism comprises a first antenna layer slidably arranged on the extension mechanism and a second antenna layer slidably arranged on the extension mechanism.

[0005] The shortwave antenna of the present invention is lifted and lowered by hingedly connecting the first support arm to the rotating member and hingedly connecting the second support arm to the first support arm; the second extension arm and the third extension arm are respectively hingedly connected to the first extension arm to achieve extension and retraction; the distance is adjusted by sliding the second antenna layer and the first antenna layer on the extension mechanism. The shortwave antenna has a simple structure, can be folded and extended, and is easy to install and maintain.

[0006] In one embodiment, the support mechanism further includes a polarization power element; one end of the polarization power element is hinged to the third support arm, and the other end is hinged to the first extension arm; the polarization power element is used to drive the extension mechanism to rotate around the third support arm.

[0007] In one embodiment, the support mechanism also includes 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 to the rotating member, and the other end is hinged to the first support arm; one end of the second folding power element is hinged to the first support arm, and the other end is hinged to the second support arm; one end of the third folding power element is hinged to the second support arm, and the other end is hinged to the third support arm.

[0008] In one embodiment, the support mechanism also includes a first connecting rod and a second connecting rod; one end of the first connecting rod is hinged to the first support arm, and the other end is hinged to the second folding power element; one end of the second connecting rod is hinged to the second support arm, and the other end is hinged to the second folding power element.

[0009] In one embodiment, the extension mechanism also includes a first extension power element and a second extension power element; one end of the first extension power element is hinged to the first extension arm, and the other end is hinged to the second extension arm; one end of the second extension power element is hinged to the first extension arm, and the other end is hinged to the second extension arm.

[0010] In one embodiment, the slewing mechanism also includes a first swing leg, a second swing leg, a third swing leg and a fourth swing leg respectively hinged to the four end corners of the fixing member; the first swing leg and the third swing leg are arranged at the same end of the fixing member; the second swing leg and the fourth swing leg are arranged at the other end of the fixing member.

[0011] In one embodiment, the rotating mechanism also includes 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 to drive the first swing leg, the second swing leg, the third swing leg and the fourth swing leg to rotate.

[0012] In one embodiment, the rotary mechanism further includes a rotary connecting member and a reducer disposed on the rotating member; the fixed member and the rotating member are respectively connected to the rotary connecting member; and the reducer is engaged with the rotary connecting member.

[0013] In one of the embodiments, it also includes a control mechanism; the control mechanism is signal-connected to the rotating mechanism, the supporting mechanism, the extending mechanism and the antenna mechanism respectively.

[0014] In one of the embodiments, it further includes a traction mechanism; the traction mechanism includes a traction vehicle and an axle; the traction vehicle and the antenna mechanism are detachably connected; the axle and the first support arm are detachably connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of a shortwave antenna in a transport state according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the shortwave antenna in which the support mechanism is in the raised state is shown;

[0017] Figure 3 for Figure 1 A front view of the shortwave antenna in which the first support arm and the second support arm are in a completely vertical state;

[0018] Figure 4 for Figure 1 A top view of the shortwave antenna in which the first extension arm, the second extension arm and the third extension arm are fully extended;

[0019] Figure 5 for Figure 1 A top view of the shortwave antenna shown in the fully deployed state of the antenna mechanism;

[0020] Figure 6 for Figure 1 A left side view of the shortwave antenna shown with the extension mechanism rotated to 45 degrees;

[0021] Figure 7 for Figure 1 A front view of the shortwave antenna in which the extension mechanism is rotated to 90 degrees;

[0022] Figure 8 for Figure 1 A top view of the shortwave antenna shown with the antenna mechanism deployed in a horizontal polarization state;

[0023] Fig. 9 for Figure 1 The front view of the shortwave antenna shown in the vertical polarization state;

[0024] Fig.10 for Figure 1 The front view of the shortwave antenna shown shows the second supporting arm at an elevation angle of 45 degrees.

[0025] Notes on the attached drawings:

[0026] Shortwave antenna 100;

[0027] Traction mechanism 10, tractor 11, axle 12, slewing mechanism 20, fixed part 21, rotating part 22, slewing connecting part 23, first swing leg 24, second swing leg 25, third swing leg 26, fourth swing leg 27, second supporting power element 28, fourth supporting power element 29;

[0028] Support mechanism 30, first support arm 31, second support arm 32, third support arm 33, first folding power element 34, second folding power element 35, third folding power element 36, first connecting rod 37, second connecting rod 38, polarization power element 39;

[0029] Extension mechanism 40 , first extension arm 41 , second extension arm 42 , third extension arm 43 , first extension power element 44 , second extension power element 45 , antenna mechanism 50 , first antenna layer 51 , second antenna layer 52 , third antenna layer 53 , fourth antenna layer 54 . DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] See also Figures 1 to 10 , which is a shortwave antenna 100 according to an embodiment of the present invention, comprises a traction mechanism 10, a rotating mechanism 20, a supporting mechanism 30, an extending mechanism 40 and an antenna mechanism 50; the shortwave antenna according to the present invention is lifted and lowered by hingedly connecting the rotating mechanism 20 with the supporting mechanism 30; is extended and retracted by the extending mechanism 40; and the distance is adjusted by sliding the antenna mechanism 50 on the extending mechanism 40.

[0033] like Figure 1 As shown, in this embodiment, for the convenience of transportation, the shortwave 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, which provides traction for the whole vehicle to travel on the road, and can enable the whole vehicle to travel at a speed of 80km / h; the axle 12 is a two-axle axle, using 8 load-bearing tires with a diameter of 1.1m. Further, the tractor 11 is detachably connected to the antenna mechanism 40.

[0034] like Figures 2 to 5As shown, the slewing mechanism 20 includes a fixed member 21 and a rotating member 22 connected to the fixed member 21; the slewing mechanism 20 also includes a slewing connecting member 23 and a reducer (not shown) disposed on the rotating member 22; the fixed member 21 and the rotating member 22 are respectively connected to the slewing connecting member 23; the reducer and the slewing connecting member 23 are engaged to control the horizontal rotation of the rotating member 22 relative to the fixed member 21. Optionally, the slewing connecting member 23 is a gear; the rotation range of the rotating member 22 relative to the fixed member 21 is 360 degrees. In order to support the fixing member 21, the slewing 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 which are respectively hinged to the four end corners of the fixing member 21; the first swing leg 24 and the third swing leg 26 are arranged at the same end of the fixing member 21; the second swing leg 25 and the fourth swing leg 27 are arranged at the other end of the fixing member 21; the first swing leg 24 and the third swing leg 26 move in opposite directions; the second swing leg 25 and the fourth swing leg 27 move in opposite directions. 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 respectively parallel to the other side of the fixing member 21. The slewing 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 to drive the first swing leg 24, the second swing leg 25, the third swing leg 26 and the fourth swing leg 27 to rotate. Optionally, one end of the first power element is hinged to one end of the fixing 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 to one end of the fixing member 21, and the other end is hinged to one side of the second swing leg 25; one end of the third power element is hinged to one end of the fixing member 21 away from the first swing leg 24, and the other end is hinged to one side of the third swing leg 26; one end of the fourth power element is hinged to one end of the fixing member 21 away from the second swing leg 25, and the other end is hinged to one side of the fourth swing leg 27. Further, 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 slewing mechanism 20 also includes a first supporting power element (not shown), a second supporting power element 28, a third supporting power element (not shown) and a fourth supporting power element 29; 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 used to adjust the height of the first swing leg 24, the second swing leg 25, the third swing leg 26 and the fourth swing leg 27; 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.

[0035] Please also read Figure 6The support mechanism 30 includes a first support arm 31, a second support arm 32 hinged to the first support arm 31, and a third support arm 33 hinged to the second support arm 32; one end of the first support arm 31 is hinged to the rotating member 22; the axle 12 is detachably connected to the first support arm 31. Optionally, the first support arm 31 is installed on the rotating member 22 through a pin; the second support arm 32 is connected to the first support arm 31 through a pin; the third support arm 33 is connected to the second support arm 32 through a pin. In order to achieve lifting, the support mechanism 30 also includes 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 to the rotating member 22, and the other end is hinged to the first support arm 31; one end of the second folding power element 35 is hinged to the first support arm 31, and the other end is hinged to the second support arm 32; one end of the third folding power element 36 is hinged to the second support arm 32, and the other end is hinged to the third support arm 33. The first folding power element 34 is used to drive the first support arm 31 to rotate around the rotating member 22; the second folding power element 35 is used to drive the second support arm 32 to rotate around the first support arm 31; the third folding power element 36 is used to drive the third support arm 33 to rotate around the second support arm 32. Optionally, the rotation range of the first support arm 31 and the third support arm 33 is 0 degrees to 90 degrees; the rotation range of the second support arm 32 relative to the first support arm 31 is 0 degrees to 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 connecting rod 37 and a second connecting rod 38; one end of the first connecting rod 37 is hinged to the first support arm 31, and the other end is hinged to the second folding power element 35; one end of the second connecting rod 38 is hinged to the second support arm 32, and the other end is hinged to the second folding power element 35; optionally, there are two first connecting rods 37 and two second connecting rods 38, and the two first connecting rods 37 are symmetrically arranged on both sides of the first support arm 31, and the two second connecting rods 38 are symmetrically arranged on both sides of the second support arm 32; when in use, the second folding power element 35 rotates the second support arm 32 around the first support arm 31 by pushing and pulling the first connecting rod 37 and the second connecting rod 38 to rotate synchronously. In one embodiment, the support mechanism 30 further includes a polarization power element 39; one end of the polarization power element 39 is hinged to the third support arm 33, and the other end is hinged to the extension mechanism 40; the polarization power element 39 is used to drive the extension mechanism 40 to rotate around the third support arm 33.

[0036] In order to save space, the extension mechanism 40 includes a first extension arm 41, a second extension arm 42 and a third extension arm 43; the first extension arm 41 is hinged to one end of the third support arm 33 away from the second support arm 32; the second extension arm 42 and the third extension arm 43 are respectively hinged to the two ends of the first extension arm 41. Optionally, one end of the polarization power element 39 is hinged to the third support arm 33, and the other end is hinged to the first extension arm 41; the polarization power element 39 drives the first extension arm 41 to rotate around the third support arm 33; further, the rotation range of the first extension arm 41 is 0 degrees to 90 degrees. The extension mechanism 40 also includes a first extension power element 44 and a second extension power element 45; one end of the first extension power element 44 is hinged to the first extension arm 41, and the other end is hinged to the second extension arm 42; one end of the second extension power element 45 is hinged to the first extension arm 41, and the other end is hinged to the second extension arm 42. The first extension power element 44 is used to drive the second extension arm 42 to rotate around the first extension arm 41; the second extension power element 45 is used to drive the third extension arm 43 to rotate around the second extension arm 42. Optionally, the rotation range of the second extension arm 42 and the third extension arm 43 is 0 degrees to 90 degrees. During transportation, the second extension arm 42 and the third extension arm 43 are respectively perpendicular to the two ends of the first extension arm 41; during operation, the first extension arm 41, the second extension arm 42 and the third extension arm 43 are coaxially arranged.

[0037] In one embodiment, the antenna mechanism 50 includes a first antenna layer 51 slidably mounted on the extension mechanism 40 and a second antenna layer 52 slidably mounted on the extension mechanism 40; optionally, the first antenna layer 51 is slidably mounted on the first extension arm 41 and the second extension arm 42 through a slider; the second antenna layer 52 is slidably mounted on the first extension arm 41 and the third extension arm 43 through a slider. Further, the antenna mechanism 50 also includes a third antenna layer 53 disposed on one side of the first antenna layer 51 and a fourth antenna layer 54 disposed on one side of the second antenna layer 52; the third antenna layer 53 is slidably mounted on the first extension arm 41 and the second extension arm 42 through a slider; the fourth antenna layer 54 is slidably mounted on the first extension arm 41 and the third extension arm 43 through a slider. The spacing between the first antenna layer 51, the second antenna layer 52, the third antenna layer 53 and the fourth antenna layer 54 is adjusted by extending and retracting the first antenna layer 51, the second antenna layer 52, the third antenna layer 53 and the fourth antenna layer 54. The first extension arm 41 is driven to rotate by the polarized power element 39, thereby driving the antenna mechanism 50 to rotate, and realizing the horizontal and vertical switching of the antenna mechanism 50. 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 extension arm 41, and the adjacent antenna layers are in a compressed state, which effectively reduces the transportation size and facilitates installation and maintenance. During 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, which is convenient for receiving and transmitting signals. In order to realize automatic control, the shortwave antenna 100 also includes a control mechanism; the control mechanism is respectively connected to the rotation mechanism 20, the support mechanism 30, the extension mechanism 40 and the antenna mechanism 50 by signal.

[0038] like Figure 1As shown, in the transport 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 shaft; the rotating member 22 and the fixing member 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 installed on the first support arm 31 and is in a horizontal state. After arriving at 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 unfold and fix, and then the control mechanism controls the first support power element, the second support power element 28, the third support power element and the fourth support power element 29 to extend, and while leveling the fixing member 21, the connection pin between the antenna mechanism 50 and the tractor 11 is also separated from the tractor 11, and the tractor 11 moves forward and separates from the rotating antenna mechanism 50. The connecting pin between the first support arm 31 and the axle 12 is removed, and the axle 12 is moved back to separate from the first support arm 31 .

[0039] like Figure 2 As shown, the control mechanism controls the first folding power element 34 to extend, so that the first support arm 31 rotates and rises around the rotating member 22. At the same time, the control mechanism controls the second folding power element 35 to extend, so that the second support arm 32 rotates around the first support arm 31 and the second support arm 32 is unfolded. At the same time, the control mechanism controls the third folding power element 36 to extend, so that the third support arm 33 rotates around the second support arm 32 and the third support arm 33 is unfolded. In this process, the control mechanism controls the first folding power element 34, the second folding power element 35 and the third folding power element 36 to work together to ensure that the antenna mechanism 50 remains horizontal during the slow rise. Figure 3 As shown, after the first folding power element 34, the second folding power element 35 and the third folding power element 36 are fully extended, the arm raising process of the support mechanism 30 and the rising process of the antenna mechanism 50 are completely completed, the support mechanism 30 is perpendicular to the plane on the rotating part 22, and the antenna mechanism 50 is in a horizontal state.

[0040] like Figure 4 As shown, after the support mechanism 30 is raised and the antenna mechanism 50 is lifted, the control mechanism controls the first extension power element 44 and the second extension power element 45 to extend, and respectively drives the second extension arm 42 and the third extension arm 43 to rotate around the first extension arm 41; after the second extension arm 42 and the third extension arm 43 are fully extended, the first extension arm 41, the second extension arm 42 and the third extension arm 43 are in a straight line. Figure 5As shown, under the action of the cable drum and the steel wire rope, the first antenna layer 51 and the third antenna layer 53 slide and unfold along the first extension arm 41 and the second extension arm 42 respectively; the second antenna layer 52 and the fourth antenna layer 54 slide and unfold along the first extension arm 41 and the third extension arm 43 respectively. After the antenna mechanism 50 is fully unfolded, the spacing between the antenna layers is equal, and the control mechanism controls the movement of the locking pins between the antenna layers and the extension mechanism 40, so that the antenna layers and the extension mechanism 40 are in a locked state.

[0041] The control mechanism controls the polarization power element 39 to extend, and drives the first extension arm 41 to rotate around the third support arm 33. Figure 6 FIG. 4 is a schematic diagram showing the extension mechanism 40 rotated to a 45-degree state; Figure 7 As shown, 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 fully extended, the antenna mechanism 50 is in a horizontal state. At this time, the control mechanism controls the electric push rods in each antenna layer to extend and gradually unfold the antenna; Figure 8 As shown, after the deployment is completed and the corresponding equipment is connected, long-distance communication can be carried out. The control mechanism controls the reducer 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 the communication destination. Fig. 9 As shown, after the antenna mechanism 50 is fully deployed, the control mechanism controls the polarization power element 39 to retract, and the antenna mechanism 50 slowly changes from a horizontal polarization state to a vertical polarization state. After the polarization power element 39 is fully retracted, signal transmission is performed, which can solve the problem of short-range communication of the antenna mechanism 50. After the antenna mechanism 50 is fully deployed, the control mechanism controls the second support arm 32 to retract, and the second folding arm 32 slowly folds, driving the antenna mechanism 50 to rotate; as shown in FIG. Fig.10 The second supporting arm 32 is shown in a schematic diagram at an elevation angle of 45 degrees. After the second folding arm 32 is retracted a certain distance, the signal is transmitted, which can solve the short-distance communication problem of the antenna mechanism 50. The folding process is exactly the opposite of the unfolding process and will not be described in detail.

[0042] It should be noted that the structure of the shortwave antenna 100 has been verified by ADAMS mechanism simulation and PROE mechanism analysis module analysis, so it only needs to follow the operating procedures during the movement.

[0043] The shortwave antenna 100 of the present invention is lifted and lowered by hingedly connecting the first support arm 31 to the rotating member 22 and hingedly connecting the second support arm 32 to the first support arm 31; the second extension arm 42 and the third extension arm 43 are respectively hingedly connected to the first extension arm 41 to achieve extension and retraction; and the distance is adjusted by sliding the second antenna layer 52 and the first antenna layer 51 on the extension mechanism 40. The shortwave antenna 100 has a simple structure, can be folded and extended, and is easy to install and maintain.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A shortwave antenna, characterized in that: It includes a rotating mechanism, a supporting mechanism, an extending mechanism and an antenna mechanism; the rotating mechanism includes a fixing part and a rotating part connected to the fixing part; the supporting mechanism includes a first supporting arm, a second supporting arm hinged to the first supporting arm and a third supporting arm hinged to the second supporting arm; one end of the first supporting arm is hinged to the rotating part; the extending mechanism includes a first extending arm, a second extending arm and a third extending arm; the middle part of the first extending arm is hinged to one end of the third supporting arm away from the second supporting arm; the second extending arm and the third extending arm are respectively hinged to two ends of the first extending arm; the antenna mechanism includes a first antenna layer slidably arranged on the extending mechanism and a second antenna layer slidably arranged on the extending mechanism.

2. The shortwave antenna according to claim 1, characterized in that: The support mechanism also includes a polarization power element; one end of the polarization power element is hinged to the third support arm, and the other end is hinged to the first extension arm; the polarization power element is used to drive the extension mechanism to rotate around the third support arm.

3. The shortwave antenna according to claim 1, characterized in that: The support mechanism also includes 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 to the rotating member, and the other end is hinged to the first support arm; one end of the second folding power element is hinged to the first support arm, and the other end is hinged to the second support arm; one end of the third folding power element is hinged to the second support arm, and the other end is hinged to the third support arm.

4. The shortwave antenna according to claim 3, characterized in that: The support mechanism also includes a first connecting rod and a second connecting rod; one end of the first connecting rod is hinged to the first supporting arm, and the other end is hinged to the second folding power element; one end of the second connecting rod is hinged to the second supporting arm, and the other end is hinged to the second folding power element.

5. The shortwave antenna according to claim 1, characterized in that: The extension mechanism also includes a first extension power element and a second extension power element; one end of the first extension power element is hinged to the first extension arm, and the other end is hinged to the second extension arm; one end of the second extension power element is hinged to the first extension arm, and the other end is hinged to the second extension arm.

6. The shortwave antenna according to claim 1, characterized in that: The slewing mechanism also includes a first swing leg, a second swing leg, a third swing leg and a fourth swing leg which are respectively hinged to the four end corners of the fixing member; the first swing leg and the third swing leg are arranged at the same end of the fixing member; the second swing leg and the fourth swing leg are arranged at the other end of the fixing member.

7. The shortwave antenna according to claim 6, characterized in that: The rotating mechanism also includes 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 to drive the first swing leg, the second swing leg, the third swing leg and the fourth swing leg to rotate.

8. The shortwave antenna according to claim 1, characterized in that: The rotary mechanism also includes a rotary connecting member and a reducer arranged on the rotating member; the fixed member and the rotating member are respectively connected to the rotary connecting member; the reducer is engaged with the rotary connecting member.

9. The shortwave antenna according to claim 1, characterized in that: It also includes a control mechanism; the control mechanism is respectively connected with the rotating mechanism, the supporting mechanism, the extending mechanism and the antenna mechanism by signals.

10. The shortwave antenna according to claim 1, characterized in that: It also includes a traction mechanism; the traction mechanism includes a traction vehicle and a vehicle axle; the traction vehicle and the antenna mechanism are detachably connected; the vehicle axle and the first support arm are detachably connected.

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