CN218160835U

CN218160835U - Novel log periodic antenna

Info

Publication number: CN218160835U
Application number: CN202222307673.4U
Authority: CN
Inventors: 李项托; 舒玉春; 程宏磊; 王海涛
Original assignee: Hebei Dairui Technology Co ltd
Current assignee: Hebei Dairui Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-27
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a novel log periodic antenna relates to log periodic antenna field. The automatic lifting device comprises a supporting bracket, wherein a movable opening is formed in the supporting bracket, a lifting mechanism is installed on the supporting bracket and comprises a driving screw rod, a threaded seat, a limiting slide block, a positioning base and a movable ring, the lower end of the driving screw rod is connected with a driving mechanism, and the driving mechanism comprises a butt joint shaft, a butt joint groove, a driving worm wheel, a driving worm and a driving motor. The drive worm will drive the drive worm wheel rotatory after starting driving motor, it can drive the drive lead screw rotation through the butt joint axle after the drive worm wheel is rotatory, the screw thread seat will descend after the drive lead screw is rotatory, the movable ring will drive the antenna main part and descend after the screw thread seat descends, the staff's maintenance of can being convenient for after the antenna main part descends ground department, can control driving motor reversal after the maintenance is accomplished, the screw thread seat will the upward movement after the driving motor reversal, thereby make the antenna of restoreing remove support upper end department.

Description

Novel log periodic antenna

Technical Field

The utility model relates to a log periodic antenna field, in particular to novel log periodic antenna.

Background

The log periodic antenna is a non-frequency-varying antenna, and the non-frequency-varying antenna means that electrical characteristics such as impedance, a directional diagram, gain, a standing-wave ratio and the like of the antenna periodically change along with the logarithm of frequency and are kept basically unchanged in a wide frequency band. The antenna remains in its original configuration after being transformed by a certain scaling factor τ, so that the antenna performance occurring between frequencies f and τ f will recur at frequencies τ f and τ f, and so on, the electrical index of the antenna will change periodically over a wide frequency range. The log periodic antenna is a medium gain broadband antenna with a bandwidth ratio of 10. The metal sheet structure or the wire structure is coplanar or non-coplanar; the electric field polarization may be horizontal, vertical, or circular. The existing logarithmic antenna is fixed on the top end of the support through screws, and the antenna can be taken down for maintenance after the support is dismantled when the antenna fails, so that the maintenance is inconvenient, and an antenna support convenient to maintain is needed.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a novel log periodic antenna, which can effectively solve the problems mentioned in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel log periodic antenna, includes the support holder, the last movable opening of having seted up of support holder, install elevating system on the support holder, elevating system includes drive lead screw, screw seat, limit slider, location base and loose loop, drive lead screw movable mounting is inside the support holder, the screw seat is installed to the screw thread on the drive lead screw, fixed mounting has limit slider on the screw seat, fixed mounting has the loose loop on the limit slider, movable loop fixed surface installs the location base, fixed mounting has the antenna main part on the base of location, the drive lead screw lower extreme is connected with actuating mechanism, actuating mechanism includes butt joint axle, butt joint recess, driving worm wheel, driving worm and driving motor, driving worm wheel sets up in the driving lead screw below, the butt joint recess has been seted up to driving worm wheel intermediate position, be equipped with the butt joint axle in the butt joint recess, driving worm wheel one side is equipped with the driving worm, connect driving motor on the driving worm, it can drive the driving worm wheel rotation after the driving worm wheel rotation, and it can drive the drive lead screw rotation through the butt joint axle.

Furthermore, bearings are arranged at the edges of the two ends of the driving screw rod, and the driving screw rod is movably arranged in the supporting bracket through the bearings.

Furthermore, the movable ring is movably mounted on the threaded seat through a limiting slide block, the limiting slide block is mounted in the supporting bracket through the threaded seat, and the limiting slide block extends out of the supporting bracket through the movable opening.

Furthermore, a mechanism shell is arranged on the driving worm wheel and the driving worm, and the driving worm wheel and the driving worm are movably arranged in the mechanism shell.

Furthermore, the driving worm wheel is meshed with the driving worm, one end of the butt joint shaft is connected to the driving worm wheel through the butt joint groove, and the other end of the butt joint shaft is fixed to the lower end of the driving screw rod.

Furthermore, the antenna main body is fixed on the movable ring through the positioning base, and the antenna main body is movably installed on the supporting bracket through the lifting mechanism.

Compared with the prior art, the utility model discloses following beneficial effect has:

can start driving motor during antenna trouble, it is rotatory that the drive worm will drive the drive worm wheel after starting driving motor, it can drive the drive lead screw rotation through the butt joint axle after the drive worm wheel is rotatory, the screw thread seat will descend after the drive lead screw is rotatory, the movable ring will drive the antenna main part and descend after the screw thread seat descends, the staff's maintenance of can being convenient for after the antenna main part descends ground department, can control driving motor reversal after the maintenance is accomplished, the screw thread seat will the upward movement after the driving motor reversal, thereby make the antenna of restoreing remove support upper end department.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the lifting mechanism of the present invention;

fig. 3 is a schematic view of the driving mechanism of the present invention.

In the figure: 1. a support bracket; 2. a movable gap; 3. an antenna main body; 4. a lifting mechanism; 401. driving the screw rod; 402. a threaded seat; 403. a limiting slide block; 404. positioning a base; 405. a movable ring; 5. a drive mechanism; 501. a butt joint shaft; 502. butting the grooves; 503. a drive worm gear; 504. driving the worm; 505. the motor is driven.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.

As shown in fig. 1 to fig. 3, a novel log periodic antenna comprises a supporting bracket 1, a movable opening 2 is formed in the supporting bracket 1, an elevating mechanism 4 is installed on the supporting bracket 1, a driving mechanism 5 is connected to the lower end of a driving lead screw 401, an antenna main body 3 is fixed on a movable ring 405 through a positioning base 404, and the antenna main body 3 is movably installed on the supporting bracket 1 through the elevating mechanism 4.

The lower end of the driving screw 401 is connected with a driving mechanism 5, the driving mechanism 5 comprises a butt joint shaft 501, a butt joint groove 502, a driving worm wheel 503, a driving worm 504 and a driving motor 505, the driving worm wheel 503 is arranged below the driving screw 401, the butt joint groove 502 is formed in the middle of the driving worm wheel 503, the butt joint shaft 501 is arranged in the butt joint groove 502, the driving worm 504 is arranged on one side of the driving worm wheel 503, the driving motor 505 is connected onto the driving worm 504, the driving worm 504 drives the driving worm wheel 503 to rotate after the driving motor 505 is started, and the driving worm wheel 503 drives the driving screw 401 to rotate through the butt joint shaft 501 after rotating.

Install elevating system 4 on the support frame 1, elevating system 4 includes drive lead screw 401, screw seat 402, limit slider 403, location base 404 and movable ring 405, drive lead screw 401 movable mounting is inside support frame 1, threaded seat 402 is installed to the last screw thread of drive lead screw 401, fixed mounting has limit slider 403 on the screw seat 402, fixed mounting has movable ring 405 on the limit slider 403, movable ring 405 fixed surface installs location base 404, fixed mounting has antenna main part 3 on the location base 404, screw seat 402 will descend after drive lead screw 401 is rotatory, movable ring 405 will drive antenna main part 3 and descend after the screw seat 402 descends, the staff's maintenance of can being convenient for after antenna main part 3 descends ground department, can control driving motor 505 reversal after the maintenance is accomplished, screw seat 402 will the upward movement after driving motor 505 reversal, thereby make the good antenna of restoration remove support frame 1 upper end department.

It should be noted that, the utility model relates to a novel log periodic antenna, when the in-service use, at first control driving motor 505 corotation, because be equipped with the mechanism shell on driving worm wheel 503 and the driving worm 504, and driving worm wheel 503 and the equal movable mounting of driving worm 504 are in the mechanism shell, driving worm wheel 503 meshes together with driving worm 504, then driving worm 504 will drive driving worm wheel 503 and rotate after driving motor 505 corotation, because it connects on driving worm wheel 503 through butt joint recess 502 to butt joint shaft 501 one end, the other end of butt joint shaft 501 is fixed on driving lead screw 401 lower end, driving lead screw 401 both ends edge is equipped with the bearing, driving lead screw 401 passes through bearing movable mounting in support holder 1, then it can drive driving lead screw 401 through butt joint shaft 501 rotatory after driving worm wheel 503 rotates and rotate, screw base 402 will descend after driving lead screw 401 is rotatory, because, antenna main part 3 passes through 4 movable mounting of elevating system on support holder 1, then movable ring 405 will drive antenna main part 3 descends after screw base 402 descends, antenna main part 3 descends after descending can be convenient for the staff maintenance after ground department, can control driving motor 505 after the maintenance, thereby make antenna main part 3 go up to the movement support holder, thereby make the antenna main part 3 go up to the movement, thereby make the antenna main part 3 move the support upward support 3.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel log periodic antenna is characterized in that: the antenna comprises a supporting bracket (1), wherein a movable opening (2) is formed in the supporting bracket (1), an elevating mechanism (4) is installed on the supporting bracket (1), the elevating mechanism (4) comprises a driving screw rod (401), a threaded seat (402), a limiting slide block (403), a positioning base (404) and a movable ring (405), the driving screw rod (401) is movably installed inside the supporting bracket (1), the threaded seat (402) is installed on the driving screw rod (401) in a threaded manner, the limiting slide block (403) is fixedly installed on the threaded seat (402), the movable ring (405) is fixedly installed on the limiting slide block (403), the positioning base (404) is fixedly installed on the surface of the movable ring (405), an antenna main body (3) is fixedly installed on the positioning base (404), the lower end of the driving screw rod (401) is connected with a driving mechanism (5), the driving mechanism (5) comprises a butt joint shaft (501), a butt joint groove (502), a driving worm wheel (503), a driving worm (504) and a driving motor (505), the butt joint groove (502) is formed in the middle position of the driving screw rod (503), and the butt joint groove (502) is formed in the middle position of the butt joint shaft (401), one side of the driving worm wheel (503) is provided with a driving worm (504), and the driving worm (504) is connected with a driving motor (505).

2. The novel log periodic antenna as claimed in claim 1, wherein: the bearing is arranged at the edges of two ends of the driving screw rod (401), and the driving screw rod (401) is movably arranged in the supporting bracket (1) through the bearing.

3. A novel log periodic antenna as claimed in claim 2, wherein: the movable ring (405) is movably mounted on the threaded seat (402) through a limiting sliding block (403), the limiting sliding block (403) is mounted in the supporting bracket (1) through the threaded seat (402), and the limiting sliding block (403) extends out of the supporting bracket (1) through the movable opening (2).

4. A novel log periodic antenna as claimed in claim 3, wherein: and mechanism shells are arranged on the driving worm wheel (503) and the driving worm (504), and the driving worm wheel (503) and the driving worm (504) are movably arranged in the mechanism shells.

5. The novel log periodic antenna of claim 4, wherein: the driving worm wheel (503) is meshed with the driving worm (504), one end of the butt joint shaft (501) is connected to the driving worm wheel (503) through a butt joint groove (502), and the other end of the butt joint shaft (501) is fixed to the lower end of the driving screw rod (401).

6. The novel log periodic antenna of claim 5, wherein: the antenna body (3) is fixed on the movable ring (405) through the positioning base (404), and the antenna body (3) is movably mounted on the supporting bracket (1) through the lifting mechanism (4).