CN113701554A - Method for quickly laying ground net - Google Patents
Method for quickly laying ground net Download PDFInfo
- Publication number
- CN113701554A CN113701554A CN202110801988.1A CN202110801988A CN113701554A CN 113701554 A CN113701554 A CN 113701554A CN 202110801988 A CN202110801988 A CN 202110801988A CN 113701554 A CN113701554 A CN 113701554A
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- China
- Prior art keywords
- throwing
- ground
- laying
- ground net
- pulley
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004891 communication Methods 0.000 description 8
- 230000010287 polarization Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
- F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
- F41B11/62—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas with pressure supplied by a gas cartridge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
- F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
Abstract
The invention discloses a method for quickly laying a ground net, which comprises the following steps: step 1, selecting an erection site, and selecting the central position of a ground screen; step 2, assembling and fixing a throwing frame of the pneumatic throwing device to the center position of a selected ground net, moving a throwing projectile and a take-up pulley to the vicinity of the throwing frame, and respectively connecting each ground net line to one throwing projectile; step 3, determining the interval angle of the ground net lines according to design requirements, adjusting the throwing direction and angle, and step 4, sequentially short-circuiting the ground net lines by short-circuit wires according to the design requirements to finish the laying of the ground net; and 5, during withdrawing, the short connecting wires are disconnected, then the ground network cables are sequentially withdrawn by the take-up pulley, the withdrawing task is completed, and then the throwing frame and the throwing projectile are withdrawn. The method disclosed by the invention adopts the pneumatic throwing device to lay the ground net, is simple to operate, reduces the use requirements on manpower and machines, and greatly shortens the laying time of the ground net.
Description
Technical Field
The invention belongs to the field of vertical polarization communication antennas, and particularly relates to a method for quickly laying a ground screen in the field.
Background
The vertically polarized communication antenna is erected on the ground, and the current on the antenna continuously leaves the antenna in the form of displacement current in the flowing process, then reaches the ground through the surrounding space, and then returns to the bottom of the antenna through the ground in the form of feed current. The earth, being part of the current loop, will cause power losses, so-called ground losses, due to its limited electrical conductivity. Therefore, it is often necessary to lay a counterpoise under the antenna system to reduce the loss of electromagnetic energy in the ground and improve the efficiency and stability of the antenna.
As shown in fig. 1, the ground net of the vertical polarization communication antenna generally comprises a plurality of metal wires, each metal wire takes the antenna as a center of a circle, and is in a radial radiation distribution net structure (the ground net wires are sequentially connected at the inner ring of the ground net by short wires), and the length of the ground net (determined by the wavelength of the antenna) is longer.
The vertical polarization communication antenna (such as a medium-long wave antenna) erected on a fixed station is usually laid by adopting a trenching direct-burying mode, and the ground net occupies a large area, has a large construction work amount and has a long period. The small antenna (such as a short whip antenna) applied to some motor vehicle-mounted platforms can realize the function of an antenna ground net in a way of metalizing a vehicle roof; the medium-wavelength and long-wavelength antennas with larger sizes are limited by requirements of erection conditions, erection time, maneuverability and the like, are less applied to a maneuvering platform, and the difficulty of application of the medium-wavelength and long-wavelength antennas on the maneuvering platform is increased due to the need of laying a ground net.
The application of the thrower is long in history from the development of an early bow and a firearm to a later gunpowder thrower and then to the application of the existing pneumatic thrower, and the existing pneumatic thrower is widely applied to the fields of public security, special police, fire fighting, maritime affairs, exploration and the like. According to different purposes, the device can be used for throwing cable projectiles, cable automatic inflation life buoys, cable anchor hooks, climbing ladders and the like.
If the ground net is laid by adopting a throwing mode, the throwing precision of the throwing device is required to be high, the throwing device can be continuously launched for many times, the throwing distance is not less than 150m, and a quick recovery device is required to be arranged so as to achieve the purposes of quick laying and withdrawing, but products meeting the use requirements and a corresponding ground net laying method are also lacked in the current market.
Disclosure of Invention
The invention aims to provide a method for quickly laying a ground screen, and mainly solves the problems of large workload, long time consumption, difficult recovery and the like of laying the ground screen when a medium-long wave vertical polarization communication antenna is applied to a maneuvering platform.
The invention adopts the following technical scheme:
in a method of quickly laying a counterpoise, the improvement comprising the steps of:
step 1, selecting an erection site, and selecting the central position of a ground screen;
step 2, assembling and fixing a throwing frame of the pneumatic throwing device to the center position of a selected ground net, moving a throwing projectile and a take-up pulley to the vicinity of the throwing frame, and respectively connecting each ground net line to one throwing projectile;
step 3, determining the interval angle of the ground network lines according to design requirements, adjusting the throwing direction and angle, sequentially throwing the throwing bomb and the ground network lines to a preset position one by the throwing frame, completing the ground network line throwing task, checking the ground network line laying quality, and recovering the ground network lines and throwing again if the ground network lines are unqualified;
step 4, according to design requirements, sequentially short-circuiting the earth screen wires by short-circuit wires to finish earth screen laying;
and 5, during withdrawing, the short connecting wires are disconnected, then the ground network cables are sequentially withdrawn by the take-up pulley, the withdrawing task is completed, and then the throwing frame and the throwing projectile are withdrawn.
Furthermore, the pneumatic throwing device used in the method is an ejection type throwing device or a jet type throwing device, and the ejection type throwing device needs to be provided with more than two inflation bottles and a throwing frame.
Furthermore, after the throwing frame and the throwing bomb are recovered, the gas is supplemented for the throwing bomb of the ejection type throwing device or the inflatable bottle of the jet type throwing device.
Further, the take-up pulley used in the method is a manual take-up pulley or an electric take-up pulley.
Furthermore, in step 4, one end of the inner side of the earth screen is sequentially short-circuited by using short-circuit wires.
The invention has the beneficial effects that:
the method disclosed by the invention has the advantages that the pneumatic throwing device is adopted to lay the ground net, the operation is simple, the use requirements on manpower and machines are reduced, the ground net laying time is greatly shortened, compared with the method that the vertical polarization communication antenna erected on a fixed station adopts a trenching direct-buried mode to lay the ground net, the method has the advantages of high efficiency, small workload and the like on the premise of meeting the design requirements, and the foundation is laid for the application of the medium-long wave vertical polarization communication antenna with larger size on a maneuvering platform.
Drawings
FIG. 1 is a schematic diagram of the structure of an antenna counterpoise;
FIG. 2 is a schematic diagram of the steps of the method of the present invention;
fig. 3 is a schematic view of the casting process of a single ground wire.
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.
In the embodiment 1, a pneumatic throwing device is used for laying the ground net, the throwing device comprises a throwing frame, throwing bullets, take-up pulleys and other structures, and the ground net wire is made of metal wires (such as stainless steel wire ropes) with high strength, good conductivity and good flexibility. Because the ground net is composed of a plurality of (dozens to hundreds) metal wires, the throwing bomb is connected with the ground net wires in the launching process, in order to achieve the purpose of quick laying and withdrawing, a throwing bomb needs to be equipped for each ground net wire, the throwing frame is required to be capable of continuously throwing, and the throwing direction can be quickly adjusted according to the interval angle of the ground net wires. As shown in fig. 2, the method specifically includes the following steps:
step 1, selecting an erection site, and selecting the central position of a ground screen; because the medium-long wave vertical polarization communication antenna is large in size generally, the ground screen radius is large generally, and therefore when the mobile platform is applied, a relatively open field is selected for erection. After the site is selected, the antenna erection position, namely the central point (the center of the ground net) for laying the ground net is selected according to site conditions.
Step 2, assembling and fixing a throwing frame of the pneumatic throwing device to the position of a selected center point of the geonet, moving a throwing projectile and a take-up pulley to the vicinity of the throwing frame, respectively connecting each geonet to one throwing projectile, and preparing before throwing;
and 3, determining the interval angle of the ground net lines according to design requirements, adjusting the throwing direction and angle, and throwing the throwing bomb and the ground net lines to a preset position one by the throwing frame to finish the throwing task of the ground net lines. Checking the laying quality of the ground network cable, and if the ground network cable is unqualified, recovering the ground network cable and throwing again; specifically, as shown in fig. 3, in the throwing process, the ground net wire is pulled out from the take-up pulley under the action of the throwing bomb and flies to a predetermined direction, and after the throwing bomb falls to the ground, the ground net wire is tiled on the ground under the action of gravity, so that single throwing is completed; and then adjusting the throwing direction of the throwing frame to sequentially finish the throwing tasks of all the ground network lines.
Step 4, according to design requirements, sequentially short-circuiting one end of the inner side of the earth screen by using short-circuit wires to finish earth screen laying;
and 5, during withdrawing, the short connecting wires are disconnected, and then the ground network wires are sequentially withdrawn by using a withdrawing wheel to complete the withdrawing task. The take-up pulley can adopt two kinds of working methods of manual and electronic, because the ground net twine is in large quantity, and work load is big, and electronic take-up pulley work efficiency is high. And subsequently, recovering the throwing frame and the throwing bomb, and supplementing gas for the throwing bomb of the inflatable bottle of the ejection type throwing device or the jet type throwing device to prepare for next use.
The main used apparatus of the method of the invention is a pneumatic throwing device which can be divided into an ejection type and a jet type according to the difference of high-pressure gas storage positions and propulsion modes: the ejection type throwing device stores gas in a cavity of a throwing frame, and when throwing, throwing projectiles fly out of a launching tube at high speed by doing work through gas expansion and fly by inertia; the jet type throwing device stores gas in a throwing bullet cavity, and the throwing bullet flies at a high speed by means of recoil force generated when the gas in the throwing bullet is released.
The ejection type throwing device can achieve the purpose of continuous throwing through the mode of inflating the inflating bottles, but because the number of ground net lines is large and the capacity of a single inflating bottle is limited, a plurality of inflating bottles need to be equipped to meet the requirement of throwing times; meanwhile, as the inflation of the inflation bottle requires time, a plurality of throwing frames can be equipped for simultaneous operation in order to improve throwing efficiency, and the rapid completion of ground net laying is ensured.
The ejection type throwing device has the advantages that the throwing bomb is the high-pressure container, and high-pressure gas is stored in each throwing bomb, so that compared with the ejection type throwing device, continuous throwing can be completed only by one throwing frame, air inflation at throwing intervals is not needed, and the throwing efficiency is high.
Claims (5)
1. A method for quickly laying a ground net is characterized by comprising the following steps:
step 1, selecting an erection site, and selecting the central position of a ground screen;
step 2, assembling and fixing a throwing frame of the pneumatic throwing device to the center position of a selected ground net, moving a throwing projectile and a take-up pulley to the vicinity of the throwing frame, and respectively connecting each ground net line to one throwing projectile;
step 3, determining the interval angle of the ground network lines according to design requirements, adjusting the throwing direction and angle, sequentially throwing the throwing bomb and the ground network lines to a preset position one by the throwing frame, completing the ground network line throwing task, checking the ground network line laying quality, and recovering the ground network lines and throwing again if the ground network lines are unqualified;
step 4, according to design requirements, sequentially short-circuiting the earth screen wires by short-circuit wires to finish earth screen laying;
and 5, during withdrawing, the short connecting wires are disconnected, then the ground network cables are sequentially withdrawn by the take-up pulley, the withdrawing task is completed, and then the throwing frame and the throwing projectile are withdrawn.
2. Method for the rapid laying of a counterpoise according to claim 1, characterized in that: the pneumatic throwing device used in the method is an ejection type throwing device or a jet type throwing device, and the ejection type throwing device needs to be provided with more than two inflation bottles and throwing racks.
3. Method for the rapid laying of a counterpoise according to claim 2, characterized in that: after the throwing frame and the throwing bomb are recovered, the gas is supplemented for the throwing bomb of the inflatable bottle of the ejection type throwing device or the jet type throwing device.
4. Method for the rapid laying of a counterpoise according to claim 1, characterized in that: the take-up pulley used in the method is a manual take-up pulley or an electric take-up pulley.
5. Method for the rapid laying of a counterpoise according to claim 1, characterized in that: in step 4, one end of the inner side of the earth screen is sequentially short-circuited by a short-circuit wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801988.1A CN113701554A (en) | 2021-07-15 | 2021-07-15 | Method for quickly laying ground net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801988.1A CN113701554A (en) | 2021-07-15 | 2021-07-15 | Method for quickly laying ground net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113701554A true CN113701554A (en) | 2021-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110801988.1A Pending CN113701554A (en) | 2021-07-15 | 2021-07-15 | Method for quickly laying ground net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113701554A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB485682A (en) * | 1936-01-11 | 1938-05-24 | Standard Telephones Cables Ltd | Directive wireless antennae |
| CN101240990A (en) * | 2007-02-09 | 2008-08-13 | 北京送变电公司 | Pilot rope ejector and ejection bomb matching with ejector |
| CN204706641U (en) * | 2015-06-02 | 2015-10-14 | 西安法爱多电子科技有限公司 | Vehicle-mounted light medium wave navigation antenna |
| CN205543998U (en) * | 2016-05-04 | 2016-08-31 | 惠三军 | Atmospheric pressure casts formula unwrapping wire ware |
| CN207113713U (en) * | 2017-08-29 | 2018-03-16 | 河北金锋模具科技有限公司 | A kind of rescue line-throwing appliance of angle adjustable |
| CN211017382U (en) * | 2019-10-25 | 2020-07-14 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Motor-driven low-frequency transmitting antenna |
| CN111703986A (en) * | 2020-05-27 | 2020-09-25 | 中国电子科技集团公司第十四研究所 | Quick multi-cable synchronous laying and withdrawing device |
-
2021
- 2021-07-15 CN CN202110801988.1A patent/CN113701554A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB485682A (en) * | 1936-01-11 | 1938-05-24 | Standard Telephones Cables Ltd | Directive wireless antennae |
| CN101240990A (en) * | 2007-02-09 | 2008-08-13 | 北京送变电公司 | Pilot rope ejector and ejection bomb matching with ejector |
| CN204706641U (en) * | 2015-06-02 | 2015-10-14 | 西安法爱多电子科技有限公司 | Vehicle-mounted light medium wave navigation antenna |
| CN205543998U (en) * | 2016-05-04 | 2016-08-31 | 惠三军 | Atmospheric pressure casts formula unwrapping wire ware |
| CN207113713U (en) * | 2017-08-29 | 2018-03-16 | 河北金锋模具科技有限公司 | A kind of rescue line-throwing appliance of angle adjustable |
| CN211017382U (en) * | 2019-10-25 | 2020-07-14 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Motor-driven low-frequency transmitting antenna |
| CN111703986A (en) * | 2020-05-27 | 2020-09-25 | 中国电子科技集团公司第十四研究所 | Quick multi-cable synchronous laying and withdrawing device |
Non-Patent Citations (1)
| Title |
|---|
| 王永军等: "宽带单极圆锥天线的设计", 《中国制造业信息化》 * |
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Application publication date: 20211126 |