CN210476007U

CN210476007U - Spiral antenna processing device

Info

Publication number: CN210476007U
Application number: CN201921388021.XU
Authority: CN
Inventors: 申书伟; 张立
Original assignee: Baoding Galaxy Electronic Technology Co ltd
Current assignee: Baoding Galaxy Electronic Technology Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-05-08
Anticipated expiration: 2029-08-26

Abstract

The application provides a helical antenna processingequipment includes: a primary screw, a secondary screw, a fastener, and a pin. Wherein the main spiral piece and the auxiliary spiral piece are two semicircular pipes which can be mutually buckled, and spiral channels are arranged on the inner walls of the main spiral piece and the auxiliary spiral piece. In the process of processing the spiral antenna, the main spiral piece, the auxiliary spiral piece and the pin are fixed together through the fastening piece, the spiral arms of the antenna respectively penetrate through the channel, and the two ends of the main spiral piece and the two ends of the auxiliary spiral piece are respectively contacted with the antenna feed plate and the short circuit ring, so that welding is facilitated. The spiral antenna processing device can lead the welding positions to be consistent by limiting the positions of the spiral arm and the short circuit ring of the antenna, and reduce the difference between the spiral antenna bodies.

Description

Spiral antenna processing device

Technical Field

The application relates to the technical field of communication, especially, relate to a helical antenna processingequipment.

Background

A quadrifilar helical antenna, which is a type of circularly polarized antenna, has a heart-shaped circularly polarized radiation pattern. The circular polarization filter has good circular polarization characteristics and high gain at a low elevation angle position, has the advantages of simple and compact structure and no dependence on a reference ground, and is widely applied to the field of communication. The four-arm helical antenna comprises four helical arms, a feed board connected to one ends of the four helical arms, and a short circuit ring connected to the other ends of the four helical arms. Usually, the connection among the spiral arm, the feed board and the short circuit ring is realized by welding.

Before the antenna is put into mass production formally, simulation is carried out through an antenna prototype, and the simulation aims to estimate the actual physical characteristics of the antenna through simulation analysis. However, due to manufacturing accuracy errors, the quadrifilar helix antenna is used as a three-dimensional antenna, and if the physical characteristics of the antenna prototype and the simulation model cannot be kept consistent, the actual performance of the antenna prototype and the simulation performance of the antenna model are greatly different, and even a test result that the antenna prototype is completely unusable may be obtained.

In order to obtain accurate test results and maintain the consistency of the physical characteristics of the plurality of test quadrifilar helix antennas, a plurality of quadrifilar helix antennas with the same shape and specification need to be processed in the antenna test stage. However, since the mass production stage is not performed, the precise mold and processing raw materials cannot be customized according to the shape and specification parameters of the antenna, so that the difference between the individuals of the quadrifilar helix antenna in the test stage is large, the test efficiency is affected, the test result is easy to be distorted, and the defects of the quadrifilar helix antenna cannot be found before mass production.

SUMMERY OF THE UTILITY MODEL

The application provides a helical antenna processingequipment to it is great to solve the individual difference of four arm helical antenna, influences the problem of test result.

The application provides a helical antenna processingequipment includes: a primary screw, a secondary screw, a fastener, and a pin;

the main spiral piece and the auxiliary spiral piece are two semicircular pipes which can be buckled with each other; the inner walls of the main spiral piece and the auxiliary spiral piece are provided with channels; the channels are continuously and spirally distributed on the pipe wall of the circular pipe formed after the main spiral piece and the auxiliary spiral piece are buckled;

the pin is arranged in a round pipe formed after the main spiral piece and the auxiliary spiral piece are buckled; the main spiral piece and the auxiliary spiral piece are also provided with mounting holes, and the pin is provided with a through hole; the fastener penetrates through the through hole in the pin and detachably connects the mounting holes in the main screw element and the auxiliary screw element.

Optionally, the channel is of a circular arc slideway structure; the width of the channel is greater than the diameter of the antenna spiral arm.

Optionally, the mounting hole on the secondary screw element is a threaded hole; the fastener is a screw; the fastener fixes the main screw element and the auxiliary screw element through threaded connection with the threaded hole.

Optionally, the diameter of the through hole on the pin is larger than that of the fastener; the diameter of the mounting hole on the main spiral piece is larger than that of the fastening piece.

Optionally, a fixing plane perpendicular to the central axis of the fastener is arranged on the outer circumferential wall of the main spiral piece.

Optionally, the pin is of a stepped shaft structure; the pin comprises a supporting part and a guiding part, wherein the supporting part is arranged in a circular tube formed by buckling the main spiral part and the auxiliary spiral part, and the guiding part is connected with the supporting part; the diameter of the support portion is larger than that of the guide portion.

Optionally, one end of the guide part far away from the support part is provided with a chamfer

According to the above technical solution, the present application provides a helical antenna processing apparatus, including: a primary screw, a secondary screw, a fastener, and a pin. Wherein the main spiral piece and the auxiliary spiral piece are two semicircular pipes which can be mutually buckled, and spiral channels are arranged on the inner walls of the main spiral piece and the auxiliary spiral piece. In the process of processing the spiral antenna, the main spiral piece, the auxiliary spiral piece and the pin are fixed together through the fastening piece, the spiral arms of the antenna respectively penetrate through the channel, and the two ends of the main spiral piece and the two ends of the auxiliary spiral piece are respectively contacted with the feed board and the short circuit ring, so that welding is facilitated. The spiral antenna processing device can lead the welding positions to be consistent by limiting the positions of the spiral arm and the short circuit ring of the antenna, and reduce the difference between the spiral antenna bodies.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a helical antenna processing apparatus according to the present application;

FIG. 2 is an exploded view of the helical antenna processing apparatus of the present application;

fig. 3 is a schematic view of an assembly structure of the helical antenna processing apparatus according to the present application;

FIG. 4 is a front view and a cross-sectional view of a helical antenna fabrication apparatus according to the present application;

illustration of the drawings:

wherein, 1-main helix; 2-secondary helix; 3-a fastener; 4-pins; 5-a channel; 6-a feed board; 7-a helical arm; 8-short circuit ring.

Detailed Description

Fig. 1 is a schematic structural diagram of a helical antenna processing apparatus according to the present application. As can be seen from fig. 1 and 2, the helical antenna processing apparatus provided in the present application includes: a primary screw 1, a secondary screw 2, a fastener 3, and a pin 4. The main screw part 1 and the auxiliary screw part 2 are two semicircular pipes which can be buckled with each other. In practical application, the primary screw 1 and the secondary screw 2 may be two semicircular pipes with the same shape, and the primary screw 1 and the secondary screw 2 are fastened to form a circular pipe structure by mutual contact between cut surfaces of the semicircular pipes. The specification of the formed circular tube structure can be selected according to the specification of the antenna to be processed currently. For example, for a high-power antenna, the overall structure of the antenna is large, the outer diameter of the formed spiral is also large, and correspondingly, the inner diameter of the circular tube structure formed after the primary spiral element 1 and the secondary spiral element 2 are buckled is also large.

The primary screw element 1 and the secondary screw element 2 may also have a fixing function between the primary screw element 1 and the secondary screw element 2 by providing a mutually matching protrusion on the contact surface. For example, a protrusion is arranged on the cutting surface of the main screw part 1, a groove is arranged on the cutting surface of the secondary screw part 2, the protrusion can be inserted into the groove to form a tenon cap structure, so that the positions of the main screw part 1 and the secondary screw part 2 can be fixed, and the main screw part 1 and the secondary screw part 2 are prevented from sliding in the axial direction.

Further, in order to achieve more stable position fixation, a more complicated fitting structure and a member capable of achieving mutual connection between the main screw 1 and the sub screw 2 may be provided on the contact surface. For example, a snap spring is provided on the main screw 1, and a snap is provided on the sub screw 2. Through the joint relation between jump ring and the buckle, can be so that carry out the lock fast between main spiral spare 1 and the vice spiral spare 2.

And the inner walls of the main screw part 1 and the auxiliary screw part 2 are provided with a channel 5. The slot 5 is used for inserting each helical arm 7, so the total number of slots 5 can be determined according to the specification of the antenna, for example, for a four-arm helical antenna comprising four helical arms 7, four slots 5 can be provided on the inner walls of the primary helix 1 and the secondary helix 2. In order to fix the position of each spiral arm 7, the channels 5 are continuously and spirally distributed on the wall of the circular tube formed after the main spiral piece 1 and the secondary spiral piece 2 are buckled.

Obviously, the spiral distribution law of the slot 5 is different according to the specifications of the spiral arm 7 of the different antennas to be processed. In practice, the helical arms 7 cannot be completely deployed in the channels 5 of a single primary helix 1 or secondary helix 2. The channel 5 may thus extend from the primary screw 1 to the secondary screw 2 or the secondary screw 2 to the primary screw 1, thereby forming a continuous helical ramp. In practice, the channel 5 extends from one end face of the primary screw element 1 or the secondary screw element 2 to the other.

Further, the channel 5 is of a circular arc-shaped slideway structure; the width of the channel 5 is greater than the diameter of the antenna spiral arm 7. In this embodiment, the arc-shaped chute structure of the channel 5 means that the bottom of the channel 5 is an arc transition structure. Because the spiral arm 7 of the spiral antenna is a well-shaped round metal wire, the arc-shaped transition structure at the bottom of the channel 5 can adapt to the shape of the round metal wire on one hand, so that the spiral arm 7 can be stably limited in the channel 5; on the other hand, through the arc transition structure, the resistance of the spiral arm 7 after entering the channel 5 can be reduced, and the spiral arm 7 is guided to move smoothly along the channel 5.

It should be noted that, in the technical scheme provided by the application, the channel 5 is an arc-shaped slideway structure, and can be in various forms such as a U-shaped, semicircular or arc-shaped cross section structure, and can be designed by oneself according to the structure of the antenna spiral arm 7 in practical application.

The pin 4 is arranged in a round pipe formed after the main screw part 1 and the auxiliary screw part 2 are buckled. In the technical scheme that this application provided, main spiral spare 1 and the 2 lock backs of vice spiral spare form one section pipe, and pin 4 can be cylindrical structure to some sets up in the pipe, and another part sets up outside the pipe. The part arranged in the circular tube can close the opening position of the channel 5, so that the channel 5 and the pin 4 are matched to form a channel for conveying the spiral arm 7. Therefore, the pin 4 has a supporting function, and the spiral arm 7 can be prevented from deforming when welding is heated, so that the welding precision is improved.

The part of the pin 4 arranged outside the circular tube can be used to guide the short circuit ring 8 in. That is, in practice, the short circuit ring 8 may be nested from the side of the pin 4 remote from the cylindrical portion. And reaches a position near the end of the tube in contact with one end of the spiral arm 7 so as to weld the plurality of spiral arms 7 to the short circuit ring 8. It can be seen that the pin 4 also has a guiding function, therefore, in some embodiments of the present application, the pin 4 includes a supporting portion disposed in a circular tube formed after the primary screw 1 and the secondary screw 2 are fastened, and a guiding portion connecting the supporting portion. In order to provide the support portion with a stable support effect, the diameter of the support portion should be large.

Preferably, the supporting part is in clearance fit with the round tube formed by the main screw element 1 and the auxiliary screw element 2. The clearance fit means that the design sizes of the supporting part and the circular tube are the same, but the tolerance band requirements are different, namely, the maximum tolerance of the shaft is the design size, and the minimum tolerance of the tube is the design size. And in order to facilitate the nesting of the short circuit ring 8, the guide may be provided with a smaller diameter so that the short circuit ring 8 can slide on the guide. Thus, the pin 4 may be a stepped shaft structure, with the diameter of the support portion being greater than the diameter of the guide portion.

Since vibration or force may be generated during the welding process, the stability of the processing apparatus is lowered. Therefore, in order to improve the stability, the main screw part 1 and the auxiliary screw part 2 are also provided with mounting holes, and the pin 4 is provided with a through hole; the fastener 3 penetrates through a through hole on the pin 4 and is detachably connected with a mounting hole on the main screw element 1 and the auxiliary screw element 2. Specifically, the mounting hole on the secondary screw element 2 is a threaded hole; the fastener 3 is a screw; the fastener 3 fixes the primary screw element 1 and the secondary screw element 2 through threaded connection with a threaded hole.

In practical applications, the mounting holes on the primary screw element 1 and the secondary screw element 2 may be in a coaxial position after the primary screw element 1 and the secondary screw element 2. After the pin 4 is placed in the round pipe, the through hole on the pin is aligned with the mounting hole, then the fastener 3 of the screw structure firstly passes through the mounting hole on the main screw part 1 and then passes through the through hole on the pin 4 to reach the threaded hole on the auxiliary screw part 2, and the screw threads and the screw are mutually matched through screwing the screw, so that the detachable connection is realized.

Further, to facilitate the rapid passage of the fastener 3 through the through hole in the pin 4 and the mounting hole in the main screw 1. The diameter of the through hole on the pin 4 is larger than that of the fastening piece 3; the diameter of the mounting hole on the main screw element 1 is larger than that of the fastening element 3. In addition, a fixing plane perpendicular to the central axis of the fastening piece 3 is arranged on the outer circumferential wall of the main screw piece 1. The fixing plane can maintain surface contact with the end cap of the screw, and the stability of connection is improved.

In order to keep the short-circuiting ring 8 in a stable mounting position without major movement deviations during welding, the diameter of the guide of the pin 4 is close to the inner diameter of the short-circuiting ring 8, but may be slightly smaller than the inner diameter of the short-circuiting ring 8. Therefore, in order to facilitate the sleeving of the short circuit ring 8, in some embodiments of the present application, one end of the guide portion away from the support portion is provided with a chamfer. The chamfer can facilitate the smooth nesting of the short circuit ring 8 into the guide. In addition, a partial bulge with an increased radius can be arranged at one end of the guide part far away from the support part. The projections may facilitate gripping for separation during disassembly.

According to the spiral antenna processing device provided by the application, in the process of processing the antenna, the main spiral part 1, the auxiliary spiral part 2, the fastener 3 and the pin 4 can be completely assembled according to the schematic view of a tool entity, as shown in fig. 3 and 4; then screwing one end of a plurality of spiral channels consisting of the main spiral piece 1, the channel 5 of the auxiliary spiral piece 2 and the pin 4 into the antenna spiral arm 7 until reaching the limit point of the antenna spiral arm 7; meanwhile, the antenna short circuit ring 8 is sleeved in from the tail end of the pin 4, and welding with a welding point at the bottom of the antenna spiral arm 7 is completed. After the welding is completed, the antenna feeding plate 6 is attached to the other end of the antenna spiral arm 7, and the welding with the top four welding points of the antenna spiral arm 7 is completed. And finally, screwing out the fastener 3, pulling out the pin 4, and dismantling the main screw part 1 and the auxiliary screw part 2 to finish the processing of the antenna.

In the technical scheme provided by the application, helical antenna processingequipment can be used to three-dimensional quadrifilar helical antenna's processing preparation, in actual course of working, can guarantee the size precision of antenna processing to guarantee the three-dimensional form of antenna processing. In addition, the consistency of the antenna prototype and the antenna simulation model can be ensured, and the production efficiency of the four-arm helical antenna is improved.

According to the above technical solution, the present application provides a helical antenna processing apparatus, including: a primary screw 1, a secondary screw 2, a fastener 3, and a pin 4. Wherein, the main screw part 1 and the auxiliary screw part 2 are two semicircular pipes which can be buckled with each other, and the inner walls of the main screw part 1 and the auxiliary screw part 2 are provided with spiral channels 5. In the process of processing the helical antenna, the main helical part 1, the secondary helical part 2 and the pin 4 are fixed together through the fastener 3, the helical arms 7 of the antenna respectively pass through the channel 5 and respectively contact the feed plate 6 and the short circuit ring 8 at two ends of the main helical part 1 and the secondary helical part 2 so as to be convenient for welding. The spiral antenna processing device can lead the welding positions to be consistent by limiting the positions of the antenna spiral arm 7 and the short circuit ring 8, and reduce the difference between the spiral antenna individuals.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims

1. A helical antenna processing apparatus, comprising: a main screw (1), a secondary screw (2), a fastener (3) and a pin (4);

the main spiral piece (1) and the auxiliary spiral piece (2) are two semicircular pipes which can be buckled with each other; the inner walls of the main screw part (1) and the auxiliary screw part (2) are provided with a channel (5); the channels (5) are continuously and spirally distributed on the pipe wall of a circular pipe formed after the main spiral piece (1) and the auxiliary spiral piece (2) are buckled;

the pin (4) is arranged in a circular tube formed after the main screw part (1) and the auxiliary screw part (2) are buckled; the main spiral piece (1) and the auxiliary spiral piece (2) are also provided with mounting holes, and the pin (4) is provided with a through hole; the fastener (3) penetrates through a through hole in the pin (4) and is detachably connected with a mounting hole in the main screw part (1) and the auxiliary screw part (2).

2. The helical antenna processing device according to claim 1, wherein the channel (5) is a circular arc-shaped slideway structure; the width of the channel (5) is larger than the diameter of the antenna spiral arm.

3. The helical antenna processing apparatus according to claim 1, wherein the mounting hole of the secondary helix (2) is a threaded hole; the fastener (3) is a screw; the fastener (3) is connected with the threaded hole through threads to fix the main screw part (1) and the auxiliary screw part (2).

4. A helical antenna processing apparatus as claimed in claim 3, wherein the diameter of the through hole of the pin (4) is larger than the diameter of the fastener (3); the diameter of the mounting hole on the main spiral piece (1) is larger than that of the fastening piece (3).

5. A helical antenna processing apparatus as claimed in claim 3, wherein the outer circumferential wall of the main helical member (1) is provided with a fixing plane perpendicular to the central axis of the fastening member (3).

6. The helical antenna processing apparatus according to claim 1, wherein the pin (4) has a stepped shaft structure; the pin (4) comprises a supporting part arranged in a circular tube formed after the main spiral piece (1) and the auxiliary spiral piece (2) are buckled and a guiding part connected with the supporting part; the diameter of the support portion is larger than that of the guide portion.

7. The helical antenna processing apparatus as claimed in claim 6, wherein an end of the guide portion remote from the support portion is provided with a chamfer.