CN113471679B - Quick-locking folding portable pair Zhou Tianxian vibrator and vibrator feed seat thereof - Google Patents

Quick-locking folding portable pair Zhou Tianxian vibrator and vibrator feed seat thereof Download PDF

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Publication number
CN113471679B
CN113471679B CN202110715482.9A CN202110715482A CN113471679B CN 113471679 B CN113471679 B CN 113471679B CN 202110715482 A CN202110715482 A CN 202110715482A CN 113471679 B CN113471679 B CN 113471679B
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vibrator
inner core
thin
core sleeve
elastic rope
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CN113471679A (en
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魏玉果
王永军
赵朋
李焕庆
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China Institute of Radio Wave Propagation CETC 22 Research Institute
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China Institute of Radio Wave Propagation CETC 22 Research Institute
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/088—Quick-releasable antenna elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/10—Logperiodic antennas

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Abstract

The invention discloses a quick-locking folding type portable pair Zhou Tianxian vibrator and a vibrator feed seat thereof, wherein the vibrator is formed by splicing more than two sections of thin-wall aluminum pipes, the end parts of the thin-wall aluminum pipes at two ends are respectively provided with a plug, an elastic rope hanging hole is arranged on the part of the rear end of each plug extending into the thin-wall aluminum pipe, one elastic rope penetrates through each section of thin-wall aluminum pipe, and two ends of the elastic rope are respectively connected with the elastic rope hanging holes on the plugs of the two thin-wall aluminum pipes; the front end of one of the plugs is provided with an inner core sleeve, more than two stepped holes are formed in the circumferential direction of the inner core sleeve, clamping steel balls are placed in the stepped holes, an outer sliding sleeve is sleeved on the outer side of the inner core sleeve, an inner convex ring belt is arranged on the inner side of the outer sliding sleeve and opposite to the stepped holes in the inner core sleeve, and a pressure spring is arranged between the inner convex ring belt and the plugs. The quick-locking folding type portable pair Zhou Tianxian vibrator disclosed by the invention is simple in structure, light in weight, convenient for field quick assembly and erection, foldable, retractable and convenient for loading and carrying.

Description

Fast-locking folding portable pair Zhou Tianxian vibrator and vibrator feed socket thereof
Technical Field
The invention belongs to the field of portable log periodic antennas, and particularly relates to a Zhou Tianxian vibrator and a vibrator feed seat thereof, which are quickly installed, automatically locked and folded.
Background
The portable log periodic antenna is a typical high-gain and broadband antenna and is widely applied to the fields of communication, navigation, broadcasting and the like. The portable log periodic antenna is composed of a plurality of pairs of symmetrical oscillators in a cross feeding mode, the electrical characteristics of the portable log periodic antenna are periodically changed along with the logarithm of the frequency, the length of the longest pair of oscillators is half of the longest wavelength in the frequency range of the portable log periodic antenna, and the length of the shortest pair of oscillators is shorter than half of the shortest wavelength of the working frequency range of the portable log periodic antenna. The working frequency band of some portable log periodic antenna is 30-90 MHz, belonging to ultra-short wave antenna, the longest half-wave oscillator length is 2.5m, in order to facilitate the impedance matching of high frequency end, 3-4 pairs of short oscillators are needed to be added, the number of the whole portable log periodic antenna oscillators is more than 12 pairs, even more. Because the oscillators are numerous and different in length, in order to realize quick assembly and disassembly of the antenna, the use and installation of screws and threaded structural parts need to be reduced as much as possible, and the fast operation without threads, tools and bare hands can be preferably realized.
Disclosure of Invention
The invention aims to solve the technical problem of providing a quick-locking folding portable pair Zhou Tianxian vibrator and a vibrator feed seat thereof.
The invention adopts the following technical scheme:
the improvement of a fast-locking folding portable pair Zhou Tianxian vibrator is that: the vibrator is formed by splicing more than two sections of thin-wall aluminum pipes, the end parts of the two thin-wall aluminum pipes are respectively provided with a plug, the part of the rear end of each plug extending into the thin-wall aluminum pipe is provided with an elastic rope hanging hole, an elastic rope penetrates through each section of thin-wall aluminum pipe, and the two ends of each elastic rope are respectively connected with the elastic rope hanging holes on the plugs of the two thin-wall aluminum pipes; the front end of one of the plugs is provided with an inner core sleeve, more than two stepped holes are formed in the circumferential direction of the inner core sleeve, clamping steel balls are placed in the stepped holes and cannot be separated from the inner side of the inner core sleeve, an outer sliding sleeve is sleeved on the outer side of the inner core sleeve, an inner convex ring belt is arranged on the inner side of the outer sliding sleeve and opposite to the stepped holes in the inner core sleeve, the inner convex ring belt extends into the stepped holes and extrudes the clamping steel balls from the inner side of the inner core sleeve, and a pressure spring is arranged between the inner convex ring belt and the plugs.
Furthermore, the ends of all the sections of thin-wall aluminum pipes are processed into a fillet shape by stamping or chamfering.
Furthermore, the rear end of the plug is connected with the thin-wall aluminum pipe through a vibrator end.
Furthermore, the plug is detachably connected with the end head of the vibrator, and a locking hole is formed in the side face of the plug.
Furthermore, the elastic rope is a multi-strand core super elastic rope.
Furthermore, the inner core sleeve is connected with the plug through a central screw, and the outer diameters of the inner core sleeve and the plug are the same.
Furthermore, the diameter of the clamping steel ball is 2.5mm, the diameter of the excircle of the inner core sleeve is phi 13mm, and the tolerance of the stepped hole is +/-0.01 mm.
Furthermore, the outer surface of the outer sliding sleeve is knurled.
A vibrator feed seat is arranged on a collecting line through screws and is matched with a vibrator for use, and the improvement is that: the outer cylindrical surface of the vibrator feed seat is provided with grooves which are opposite to the clamping steel balls in quantity, and the size of each groove is matched with the size of the extruded part of each clamping steel ball from the inner side of the inner core sleeve.
The invention has the beneficial effects that:
the quick-locking folding type portable pair Zhou Tianxian vibrator disclosed by the invention is simple in structure, light in weight, convenient for field quick assembly and erection, foldable, retractable and convenient for loading and carrying. The vibrator is formed by splicing more than two sections of thin-wall aluminum pipes, and each section of thin-wall aluminum pipe can be quickly spliced and tightened in a segmented manner to form a long vibrator in a manner of embedding an elastic rope in each section of thin-wall aluminum pipe, so that the full-length reliable conduction of the vibrator is realized, and the folding, releasing, carrying, packaging and transportation of the vibrator are also realized; through the quick-inserting self-locking structural design based on the pressure spring and the clamping steel ball, the quick, thread-free, tool-free installation and automatic locking of the vibrator and the integrated wire vibrator feed seat are realized, so that the use requirements of the portable log-periodic antenna for quick erection, retraction and transportation convenience are met.
The vibrator feed seat disclosed by the invention can be matched with the clamping steel balls of the vibrator, so that the quick, thread-free, tool-free installation and self-locking of the vibrator are realized.
Drawings
FIG. 1 is a schematic diagram of a 30-90 MHz portable log periodic antenna;
fig. 2 is a schematic structural view of a vibrator disclosed in embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of a quick-insertion self-locking structure based on a pressure spring and a clamping steel ball in a vibrator disclosed in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a vibrator feeding base disclosed in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The length of the longest half oscillator of the 30-90 MHz portable log periodic antenna is 2.5m, the shortest is 1.15m, the number of oscillators is 12 pairs, namely 24 oscillators, and the length of the aggregation line is 5m. The antenna is simple in structure, light in weight, convenient to erect in field rapid assembly, and the oscillator and the integrated line are of foldable structures and convenient to carry and transport. The overall structure of the antenna is shown in fig. 1.
The middle of the portable log periodic antenna is a uniform transmission line (integrated line), and each pair of vibrators are crossly arranged on the integrated line to perform cross feeding. When the antenna is erected, each oscillator needs to be quickly disassembled and assembled and reliably electrically connected with a feed point on the aggregation line. The vibrator with the length exceeding 1m can be folded in a segmented mode, and the segmented folding position needs to be reliably electrically connected and convenient to disassemble and assemble. Therefore, the structural design of the oscillator and the joint is an important factor for determining that the portable log periodic antenna is fast to disassemble and assemble, reliable and stable in work, light in weight and convenient to carry.
The portable type Zhou Tianxian meets the requirement of portability, so that the vibrator and joints at each position are small in size as much as possible, the structure is simple, and the material of the vibrator is made of aluminum alloy with low density and good conductivity. The whole vibrator is formed by inserting multiple sections of thin-wall aluminum pipes of different specifications, the outer diameter of the thickest vibrator is phi 15mm, the outer diameter of the thinnest vibrator is phi 9mm, and the length of each section of the divided vibrator is not more than 1m so as to reduce the volume of a packing box and facilitate loading and manual carrying. In order to ensure that each section of aluminum vibrator is quickly installed and has good electric conduction, a multi-strand core super-elastic rope is penetrated and fixed in the aluminum vibrator.
The portable pair Zhou Tianxian needs the vibrator to be quickly installed and locked, and reliably feeds power with the aggregation line. The number of oscillators is numerous, the lengths are different, in order to realize the quick assembly and disassembly of the antenna, the use and the installation of screws and threaded structural parts are required to be reduced as much as possible, and the quick operation without threads, tools and bare hands can be preferably realized. Therefore, the invention discloses a quick-insertion type self-locking structure based on a pressure spring and a clamping steel ball, which is used as an electric connector of a vibrator and a gathering wire vibrator feed seat, and does not use any installation standard part and tool in the whole installation process.
Embodiment 1, as shown in fig. 2, this embodiment discloses a fast-locking folding portable pair Zhou Tianxian vibrator, which is formed by splicing four sections of thin-walled aluminum tubes 1, wherein the end parts of the thin-walled aluminum tubes at two ends are respectively provided with a plug 2, the part of the rear end of each plug extending into the thin-walled aluminum tube is provided with an elastic rope hanging hole 22, an elastic rope 3 penetrates through each section of thin-walled aluminum tube, and two ends of the elastic rope are respectively connected with the elastic rope hanging holes on the plugs of the two thin-walled aluminum tubes; as shown in fig. 3, an inner core sleeve 5 is installed at the front end of one of the plugs, four stepped holes are formed along the circumferential direction of the inner core sleeve, clamping steel balls 6 are placed in the stepped holes, the clamping steel balls cannot be separated from the inner side of the inner core sleeve, an outer sliding sleeve 7 is sleeved on the outer side of the inner core sleeve, an inner convex ring belt 71 is arranged on the inner side of the outer sliding sleeve and opposite to the stepped holes in the inner core sleeve, the inner convex ring belt extends into the stepped holes and extrudes the clamping steel balls out of the inner side of the inner core sleeve, and a pressure spring 8 is installed between the inner convex ring belt and the plug, namely the inner convex ring belt is used for clamping the clamping steel balls and limiting the expansion of the pressure spring.
And processing the end of each section of thin-walled aluminum pipe into a round angle shape by adopting stamping or chamfering 4. The back end of the plug is connected with the thin-wall aluminum tube through a vibrator end 9. The plug is detachably connected with the end head of the vibrator, and the side face of the plug is provided with a locking hole to prevent vibration loosening. The elastic rope is a multi-strand core super elastic rope. The inner core sleeve is connected with the plug through a central screw 10, and the outer diameters of the inner core sleeve and the plug are the same, so that the outer sliding sleeve can smoothly slide on the outer cylindrical surface of the plug.
In order to control the weight of the quick-inserting type self-locking structure, the diameter of the clamping steel ball is only 2.5mm, the diameter of the excircle of the inner core sleeve is phi 13mm, the step Kong Xu on the inner core sleeve is required to be processed with high precision, the tolerance is controlled within +/-0.01 mm, and the hole position is ensured to enable the clamping steel ball not to be separated from the inner side of the inner core sleeve, but also to be freely movable in the step hole of the inner core sleeve. The outer surface of the outer sliding sleeve is knurled, so that the friction force and operability of bare-handed operation are improved.
The embodiment also discloses a vibrator feeding seat 11 which is arranged on the assembly line through a screw and used in cooperation with the vibrator, and the vibrator feeding seat is fixed when the vibrator is dismounted. The outer cylindrical surface of the vibrator feed seat is provided with grooves 12 which are opposite to each other in number and position, and the size of each groove is matched with the size of the extruded part of the clamping steel balls from the inner side of the inner core sleeve.
For the portable pair Zhou Tianxian vibrator with the size exceeding 1m, the sectional design of the embodiment can be adopted, the quick-insertion type self-locking vibrator insertion structure is arranged at the foremost end of the vibrator, and the vibrators are quickly tightened through the elasticity of the internally-threaded multi-strand core super-elastic rope.
The sections of aluminum tubes of the vibrators are connected and tightened together through the elasticity of the elastic ropes, and when the vibrators are disassembled, the insertion section aluminum tubes are pulled out and are folded and stored in the packing box, so that the single vibrator can be folded and stored quickly. In order to prevent the wall of the thin-wall aluminum pipe from cutting the elastic rope, the end of each section of the aluminum pipe (namely the insertion section between adjacent aluminum pipes) is processed into a fillet shape by stamping or chamfering. If the elasticity of the internal elastic rope is reduced or the internal elastic rope is accidentally damaged or broken, the internal elastic rope can be detached and replaced.
During installation, the outer sliding sleeve is slightly pushed backwards by one hand to compress the pressure spring, four clamping steel balls clamped on the inner core sleeve are released, the inner core sleeve is smoothly inserted into the vibrator feed seat, the outer sliding sleeve is loosened, the pressure spring pushes the outer sliding sleeve to move forwards, the inner convex ring belt on the inner side of the outer sliding sleeve extrudes the clamping steel balls from the inner side of the inner core sleeve, and the extruded part of the clamping steel balls is clamped in the groove of the vibrator feed seat, so that rapid installation and self-locking of the vibrator are realized. When the vibrator is disassembled, the outer sliding sleeve is pushed backwards and is pressed to be fixed, so that the clamping steel balls are in a free state, and the vibrator can be smoothly pulled out.

Claims (2)

1. A fast-locking folding portable pair Zhou Tianxian vibrator is characterized in that: the vibrator is formed by splicing more than two sections of thin-wall aluminum pipes, the end parts of the two thin-wall aluminum pipes are respectively provided with a plug, the part of the rear end of each plug extending into the thin-wall aluminum pipe is provided with an elastic rope hanging hole, one elastic rope penetrates through each section of thin-wall aluminum pipe, and the two ends of each elastic rope are respectively connected with the elastic rope hanging holes on the plugs of the two thin-wall aluminum pipes; an inner core sleeve is arranged at the front end of one of the plugs, more than two stepped holes are formed in the circumferential direction of the inner core sleeve, clamping steel balls are placed in the stepped holes and cannot be separated from the inner side of the inner core sleeve, an outer sliding sleeve is sleeved on the outer side of the inner core sleeve, an inner convex ring belt is arranged on the inner side of the outer sliding sleeve and opposite to the stepped holes in the inner core sleeve, the inner convex ring belt extends into the stepped holes and extrudes the clamping steel balls out of the inner side of the inner core sleeve, and a pressure spring is arranged between the inner convex ring belt and the plugs; processing the end of each section of thin-wall aluminum pipe into a fillet shape by adopting stamping or chamfering; the rear end of the plug is connected with the thin-wall aluminum pipe through a vibrator end socket; the plug is detachably connected with the end head of the vibrator, and a locking hole is arranged on the side surface of the plug; the elastic rope is a multi-strand core super elastic rope; the inner core sleeve is connected with the plug through a central screw, and the outer diameters of the inner core sleeve and the plug are the same; the diameter of the clamping steel ball is 2.5mm, the diameter of the excircle of the inner core sleeve is phi 13mm, and the tolerance of the stepped hole is +/-0.01 mm; the outer surface of the outer sliding sleeve is knurled.
2. A vibrator feeding base mounted on a collective line by a screw for use with a vibrator according to claim 1, characterized in that: the outer cylindrical surface of the vibrator feed seat is provided with grooves which are opposite to the clamping steel balls in quantity, and the size of each groove is matched with the size of the extruded part of each clamping steel ball from the inner side of the inner core sleeve.
CN202110715482.9A 2021-06-27 2021-06-27 Quick-locking folding portable pair Zhou Tianxian vibrator and vibrator feed seat thereof Active CN113471679B (en)

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CN114976656A (en) * 2022-05-25 2022-08-30 西安电子科技大学 Miniaturized log-periodic antenna with n-shaped bending unit
CN117913500B (en) * 2024-03-20 2024-05-28 泰兴市东盛通讯器材有限公司 Antenna device convenient to assemble

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