CN107123846B - Outdoor antenna with snow removing function - Google Patents
Outdoor antenna with snow removing function Download PDFInfo
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- CN107123846B CN107123846B CN201710342872.XA CN201710342872A CN107123846B CN 107123846 B CN107123846 B CN 107123846B CN 201710342872 A CN201710342872 A CN 201710342872A CN 107123846 B CN107123846 B CN 107123846B
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- cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1242—Rigid masts specially adapted for supporting an aerial
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Abstract
An outdoor antenna with a snow removing function comprises a base, a lifting column arranged on the base and an antenna body arranged on the lifting column, wherein the lifting column is provided with a shell and comprises a lower section, a middle section and an upper section, an opening is formed in one side wall of the middle section, a second cavity is formed in the middle section, a screw rod is arranged in the second cavity, the lower end of the screw rod is connected with a rotating shaft of a rotating motor, a moving member is sleeved on the screw rod, and an internal thread matched with an external thread of the screw rod is formed in the inner wall of a through hole in the moving member; the antenna comprises a moving member, and is characterized in that an antenna body mounting frame is arranged on the moving member, an antenna body is installed on one side, facing an opening, of the antenna body mounting frame, and the antenna body comprises a trunk and symmetrical dipole pieces arranged on two sides of the trunk. The invention provides an antenna capable of automatically lifting and lowering for cold regions, which has a snow removing function, high automation degree, convenient operation and good snow removing effect.
Description
Technical Field
The invention belongs to the field of antennas, and particularly relates to an outdoor antenna with a snow removing function.
Background
The antenna is a device used for receiving signals by a plurality of communication devices and electronic devices, has large function difference and multiple types, wherein the television antenna is a common antenna. Generally, in order to improve the quality of received radio signals, it is necessary to fix the receiving antenna outside the room.
For an antenna placed outdoors, the antenna is exposed to sunlight and rain for a long time, and the influence on the whole service life of the antenna is large. Particularly, for outdoor antennas used in cold regions, snowing weather can be frequently experienced in winter, snow can be generated on the oscillator piece of the antenna at the moment, and the oscillator piece is thicker in the past, so that the weight of the antenna oscillator piece is increased, the oscillator piece is easy to break, and on the other hand, the snow on the antenna oscillator can also affect the signal reception, and the using effect of the antenna is seriously affected.
The present invention has been made in view of the above problems, and provides an outdoor antenna having a snow removing function.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the outdoor antenna with the snow removing function, which can conveniently remove the accumulated snow on the antenna oscillator piece and prolong the service life of the antenna oscillator piece.
In order to solve the above technical problems, the present invention is solved by the following technical solutions.
The utility model provides an outdoor antenna with remove snow function, includes the base, locates the lift post on the base, locates the antenna body on the lift post, the lift post has the casing, and the lift post includes hypomere, middle section, upper segment, wherein: the bottom of the lower section is connected with the base, a sealed first cavity is arranged in the lower section, a circuit assembly, a control assembly and a rotating motor are arranged in the first cavity, and the control assembly controls the states of the circuit assembly and the rotating motor; an opening is formed in one side wall of the middle section, a second cavity is formed in the middle section, a screw rod is arranged in the second cavity, the lower end of the screw rod is connected with a rotating shaft of a rotating motor, a moving member is sleeved on the screw rod, and an internal thread matched with the external thread of the screw rod is formed in the inner wall of a through hole in the moving member; the antenna body comprises a trunk and symmetrical oscillator pieces arranged on two sides of the trunk, a rotating piece is arranged at one end of each oscillator piece, the rotating piece penetrates through a side hole in the side wall of the trunk and then is connected with a traction block in an inner cavity of the trunk, the upper end and the lower end of the traction block are connected with a traction rope, and a winding column is further arranged in the inner cavity of the trunk; one end of the traction rope is connected with the fixed elastic piece, the traction rope is sequentially connected with the upper ends of the traction blocks and then bypasses the winding column, and is sequentially connected with the lower ends of the traction blocks, a movable iron piece is arranged at the other end of the traction rope and can be attracted and moved by an electromagnet, the electromagnet is arranged on the antenna body mounting frame and is connected with the circuit component through an electric wire, and the control component controls the electrification and the outage of the electric wire; a third cavity is arranged in the upper section, and an upper bearing connected with the top of the screw rod is arranged in the third cavity.
In this technique, the moving member receives the unable turnover of restriction of second cavity, therefore rotates the in-process that the motor drove the positive and negative rotation of screw rod, can realize reciprocating of the moving member rather than the complex on the screw rod, and then realizes reciprocating of antenna body, and the installation is removed and is gone up and down conveniently, is the operating condition of antenna body when the antenna body rises to the top. In cold northern areas, when the temperature is low and snowfall weather occurs, the horizontal flaky oscillator piece accumulates snow to influence signal receiving, and the oscillator piece is easy to damage after the horizontal flaky oscillator piece accumulates heavier. In this technique, through the circular telegram of control electro-magnet, produce magnetic force, attract iron spare to remove to it, this in-process, the haulage rope removes thereupon, drives the traction block and rotates, realizes the rotation of the piece that rotates that links to each other with the traction block, and then realizes the rotation of oscillator piece, and the oscillator piece rotates the snow on it after the slope can the landing, and the electro-magnet outage afterwards, and the haulage rope resets at the effect of elastic component, and the oscillator piece resets.
Preferably, the moving member comprises a threaded portion sleeved on the screw rod and an installation portion for assembling the antenna body installation frame, the installation portion is of a transversely arranged cylindrical structure, the threaded portion protrudes outwards from the middle of the installation portion, and guide wheels are arranged at two ends of the installation portion; the antenna body mounting frame comprises two positioning rings sleeved at two ends of the mounting portion and a mounting frame main body connected to the same side of the two positioning rings, and an antenna body is connected to the outer side of the mounting frame main body.
In this technique, antenna body mounting bracket passes through the holding ring to be fixed on the installation department, and the holding ring can be for the hoop structure, convenient dismantlement.
Preferably, the opening on one side of the middle section is provided with two flexible blocking pieces with middle contact for preventing rainwater and sundries from entering the second cavity, and the upper side and the lower side of the antenna body mounting frame are provided with protruding parts for separating the two flexible blocking pieces from the middle, so that the protruding parts can separate the two flexible blocking pieces along with the moving part in the up-and-down moving process.
Preferably, the third cavity is separated from the second cavity by an upper partition plate, the top end of the screw rod penetrates through the upper partition plate and then is connected with an upper bearing arranged in the third cavity, and the upper bearing does not influence the rotation of the screw rod and also plays a role in limiting; the lower end of the upper partition board is provided with an upper sealing sleeve sleeved on the screw rod.
Preferably, the second cavity is separated from the first cavity by a lower partition plate, and the bottom end of the screw rod penetrates through the lower partition plate and then is connected with a rotating shaft of a rotating motor in the first cavity; the lower bearing sleeved on the screw rod is arranged below the lower partition plate, the lower bearing does not influence the rotation of the screw rod and also plays a limiting role, and the lower sealing sleeve is arranged above the lower partition plate.
Preferably, the electric wire connected with the electromagnet penetrates through the lower partition plate from the second cavity, then is connected with the wire take-up device in the first cavity, and is connected with the circuit assembly through a wire outlet end of the wire take-up device, and the circuit assembly is connected with a power grid or a built-in battery. The wire take-up device can well avoid the overlong electric wire to be knotted and entangled in the second cavity in the lifting process of the antenna body.
Preferably, an openable side door is provided on the housing of the lower section, and a control panel is provided in the side door to control the operation of the electric device.
Preferably, the antenna body mounting frame is provided with a weight sensor for detecting the weight of the antenna body, and the weight sensor is connected with the control assembly through a signal line. When the antenna body is detected to be heavy due to accumulated snow, the signal is transmitted to the control assembly to carry out the rotation snow removing operation.
Preferably, when the vibrator piece is in a horizontal state, the traction block is vertical.
Preferably, when the vibrator piece is in a horizontal state, the upper end of the traction block is inclined towards the elastic piece, and the rotatable angle of the vibrator piece is further increased by the structure.
Compared with the prior art, the invention has the following beneficial effects: the utility model provides a but antenna of automatic rising for cold areas has the snow removing function, and degree of automation is high, convenient operation, and snow removing is effectual.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic diagram of the antenna body of the present invention after being lifted.
FIG. 3 is a schematic view of the internal structure of the present invention
Fig. 4 is an enlarged view of the area a in fig. 3.
Fig. 5 is an enlarged view of the region B in fig. 3.
Fig. 6 is an enlarged view of the region C in fig. 3.
Fig. 7 is a cross-sectional view of the structure at the antenna body.
Fig. 8 is a first schematic diagram of the antenna body and the moving element.
Fig. 9 is a second schematic diagram of the antenna body and the moving element.
Fig. 10 is an enlarged view of region D in fig. 8.
Fig. 11 is a schematic view of the antenna body mounting bracket and the antenna body.
Fig. 12 is a front view of an antenna body mount.
FIG. 13 is a first schematic diagram of the moving part.
FIG. 14 is a second schematic view of the moving member.
Fig. 15 is a side sectional view of the antenna body mounting bracket and the antenna body.
Fig. 16 is a side sectional view of the antenna body mounting bracket and the antenna body.
Fig. 17 is a side sectional view three of the antenna body mounting bracket and the antenna body.
Fig. 18 is a side sectional view of the antenna body mounting bracket and the antenna body.
Fig. 19 is an enlarged view of region E in fig. 15.
Fig. 20 is an enlarged view of region F in fig. 15.
Fig. 21 is an enlarged view of the region G in fig. 16.
Fig. 22 is an enlarged view of the region H in fig. 17.
Fig. 23 is an enlarged view of the region I in fig. 18.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 23, an outdoor antenna with snow removing function, includes a base 2, a lifting column 1 disposed on the base 2, and an antenna body 3 disposed on the lifting column 1, wherein the lifting column 1 has a housing, and the lifting column 1 includes a lower segment 11, a middle segment 12, and an upper segment 13 connected as a whole, wherein: the bottom of the lower section 11 is connected with the base 2, a sealed first cavity is arranged in the lower section 11, a circuit assembly (including an antenna circuit module), a control assembly 112 and a rotating motor 111 are arranged in the first cavity, the control assembly controls the states of the circuit assembly and the rotating motor, the circuit assembly can be a circuit structure assembled by conventional electronic components such as wires, resistors, switches and diodes according to needs, the control assembly 112 is a conventional circuit control panel, and an input module, a processing module, a storage module and an output module which are sequentially connected are arranged on the control assembly and used for changing the circuit state according to operation or signals, and the rotating motor is a conventional commercially available rotating motor.
An opening is formed in one side wall of the middle section 12, a second cavity with a convex cross section is formed in the middle section 12, a screw rod 121 (arranged in a convex area of the convex second cavity) is arranged in the second cavity, the lower end of the screw rod 121 is connected with a rotating shaft of the rotating motor 111, a moving member 5 is sleeved on the screw rod 121, the outline of the moving member 5 is approximately the same as that of the second cavity, and an internal thread matched with an external thread of the screw rod 121 is arranged on the inner wall of a through hole 51 in the moving member 5; the antenna body mounting frame 4 is arranged on the moving piece 5, the antenna body 3 is mounted on one side, facing the opening, of the antenna body mounting frame 4, the antenna body 3 comprises a main body 31 and a vibrator piece 32 arranged on the main body 31, a rotating piece 321 is arranged at one end of the vibrator piece 32, the rotating piece 321 penetrates through a side hole in the side wall of the main body and then is connected with a traction block 322 in an inner cavity of the main body, the upper end and the lower end of the traction block 322 are connected with a traction rope 7, and a winding column 33 transversely arranged is further arranged in the inner cavity of the main body; the one end of haulage rope 7 links to each other with fixed elastic component 71 (spring), and haulage rope 7 is walked around post 33 after linking to each other with the upper end of a plurality of pull block 322 in order, links to each other with the lower extreme of pull block 322 in order again, the other end of haulage rope 7 is equipped with the iron piece 72 of activity, and this iron piece 72 can be attracted and remove by electro-magnet 73, on antenna body mounting bracket 4 was located to electro-magnet 73, electro-magnet 73 passed through the electric wire and links to each other with circuit assembly, and the circular telegram and the outage of control assembly 112 control electric wire, iron piece 72 is the iron pearl, as for on the lower inner wall of trunk inner chamber.
The upper section 13 has a third cavity therein, and the third cavity has an upper bearing 132 connected to the top of the screw 121.
As can be seen from fig. 10 to 14, in this embodiment, the moving member 5 includes a threaded portion for being sleeved on the screw rod 121 and an installation portion for assembling the antenna body installation frame 4, the installation portion is a horizontally arranged cylindrical structure, the threaded portion protrudes outwards from the middle of the installation portion, and guide wheels 52 are arranged at two ends of the installation portion and are used for rolling on the inner wall of the second cavity in the up-and-down moving process; the antenna body mounting rack 4 comprises two positioning rings 42 sleeved at two ends of the mounting part and a mounting rack main body connected to the same side of the two positioning rings 42, and the antenna body 3 is connected to the outer side of the mounting rack main body
Fig. 15 shows that, in this embodiment, two flexible blocking pieces 122 in the middle of contact are arranged on the opening on one side of the middle section 12, and may be made of a flexible rubber sheet or a flexible plastic sheet, and protruding parts 44 for separating the two flexible blocking pieces 122 from the middle are arranged in the middle of the upper and lower sides of the antenna body mounting frame 4, so as to ensure that the moving member is not hindered in moving up and down.
As can be seen from fig. 4 and 6, in this embodiment, the third cavity is separated from the second cavity by an upper partition 133, and the top end of the screw rod 121 passes through the upper partition 133 and then is connected to an upper bearing 132 disposed in the third cavity; the lower end of the upper partition 133 is provided with an upper sealing sleeve 134 which is sleeved on the screw rod 121. The second cavity is separated from the first cavity by a lower partition plate 117, and the bottom end of the screw rod 121 passes through the lower partition plate 117 and is connected with the rotating shaft of the rotating motor 111 in the first cavity; a lower bearing 116 sleeved on the screw rod 121 is arranged below the lower partition plate 117, and a lower sealing sleeve is arranged above the lower partition plate 117.
In addition, in the embodiment, the electric wire connected with the electromagnet 73 passes through the lower partition plate 117 from the second cavity, then is connected with the wire take-up device 113 in the first cavity, and is connected with the circuit component through the wire outlet end of the wire take-up device 113, and the circuit component is connected with the power grid or the built-in battery through the electric wire; this take-up 113 is conventional electric wire automatic winding device, guarantees that antenna body 3 descends the in-process, and unnecessary overlength electric wire can be rolled up by automatic, and the in-process that rises, the electric wire can be convenient pulled out.
As can be seen from fig. 2, an openable side door 10 is provided on the housing of the lower section 11, and a control panel is provided in the side door 10, so that the operation can be performed manually.
In this embodiment, be equipped with the weight sensor who detects 3 weight of antenna body on the antenna body mounting bracket 4, it is concrete, trunk 31 is inserted in the mounting hole of establishing on antenna body mounting bracket 4, this weight sensor locates between the downside outer wall of trunk 31 and the mounting hole downside inner wall, consequently when antenna body 3 becomes heavy, the weight sensor pressurized more seriously, this weight sensor passes through the signal line and links to each other with control assembly 112, the signal line can be linked to each other with control assembly 112 through take-up 113 with the electric wire together, when control assembly 112 finds that weight signal exceeds the default, can control electro-magnet 73 circular telegram, carry out the oscillator piece and rotate and remove snow operation.
As shown in fig. 15.16.19.20.21, when the vibrator piece 32 is in a horizontal state, the pulling block 322 is vertical, and after the electromagnet 73 is energized, the iron member 72 is attracted and moved to pull the pulling rope 7 to move, so as to drive the pulling block 322 to rotate, and the vibrator piece 32 rotates and moves.
In another embodiment, as shown in fig. 17.18.22.23, when the vibrator piece 32 is in a horizontal state, the upper end of the pulling block 322 inclines to 20-35 ° to the elastic member 71, so that the pulling block 322 can have a larger rotation angle when being pulled by the pulling rope 7 to rotate, the vibrator piece 32 can rotate from horizontal to vertical, and the snow removing efficiency is high.
In the antenna device of the present invention, when the rotating motor 111 drives the screw rod 121 to rotate forward and backward, the moving member 5 engaged with the screw rod 121 can move up and down on the screw rod 121, so as to move up and down the antenna body 3, thereby facilitating the installation and maintenance of the antenna body 3. When the vibrator piece 32 is used in northern cold areas, snow easily accumulates on the vibrator piece 32, signal reception is affected, and the vibrator piece 32 is easily damaged. In the technology, when the antenna body 3 is detected to be too heavy, the electromagnet 73 is electrified to generate magnetic force, the traction rope 7 is pulled to rotate the oscillator piece 32, and accumulated snow on the oscillator piece 32 slides down; after the electromagnet 73 is powered off, the oscillator piece 32 recovers under the action of the elastic piece 71.
The antenna capable of automatically lifting and lowering used in the cold area has the advantages of snow removing function, high automation degree, convenience in operation and good snow removing effect.
The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.
Claims (9)
1. The utility model provides an outdoor antenna with remove snow function, includes base (2), locates lift post (1) on base (2), locates antenna body (3) on lift post (1), its characterized in that, lift post (1) has the casing, and lift post (1) includes hypomere (11), middle section (12), upper segment (13), wherein:
the bottom of the lower section (11) is connected with the base (2), a sealed first cavity is arranged in the lower section (11), a circuit assembly, a control assembly (112) and a rotating motor (111) are arranged in the first cavity, and the control assembly controls the states of the circuit assembly and the rotating motor;
an opening is formed in one side wall of the middle section (12), a second cavity is formed in the middle section (12), a screw rod (121) is arranged in the second cavity, the lower end of the screw rod (121) is connected with a rotating shaft of a rotating motor (111), a moving piece (5) is sleeved on the screw rod (121), and an internal thread matched with an external thread of the screw rod (121) is formed in the inner wall of a through hole (51) in the moving piece (5); an antenna body mounting frame (4) is arranged on the moving piece (5), an antenna body (3) is mounted on one side, facing the opening, of the antenna body mounting frame (4), the antenna body (3) comprises a main body (31) and symmetrical oscillator pieces (32) arranged on two sides of the main body (31), a rotating piece (321) is arranged at one end of each oscillator piece (32), the rotating piece (321) penetrates through a side hole in the side wall of the main body and then is connected with a traction block (322) in an inner cavity of the main body, the upper end and the lower end of each traction block (322) are connected with a traction rope (7), and a winding column (33) is further arranged in the inner cavity of the main body; one end of the traction rope (7) is connected with a fixed elastic piece (71), the traction rope (7) is sequentially connected with the upper ends of a plurality of traction blocks (322) and then bypasses a winding column (33), and is sequentially connected with the lower ends of the traction blocks (322), a movable iron piece (72) is arranged at the other end of the traction rope (7), the iron piece (72) can be attracted and moved by an electromagnet (73), the electromagnet (73) is arranged on the antenna body mounting frame (4), the electromagnet (73) is connected with a circuit component through an electric wire, and the control component (112) controls the electrification and the outage of the electric wire;
a third cavity is arranged in the upper section (13), and an upper bearing (132) connected with the top of the screw rod (121) is arranged in the third cavity;
and a weight sensor for detecting the weight of the antenna body (3) is arranged on the antenna body mounting frame (4), and the weight sensor is connected with the control component (112) through a signal line.
2. An outdoor antenna with snow removing function according to claim 1, wherein said moving member (5) comprises a threaded portion for fitting over the screw (121) and an installation portion for assembling the antenna body mounting bracket (4), the installation portion is a cylindrical structure arranged transversely, the threaded portion protrudes outward from the middle of the installation portion, and guide wheels (52) are provided at both ends of the installation portion; antenna body mounting bracket (4) are including two holding rings (42) of cover at installation department both ends and connecting the mounting bracket main part in two holding rings (42) with one side, and the outside of this mounting bracket main part is connected with antenna body (3).
3. An outdoor antenna with snow removing function according to claim 1, wherein the opening of one side of the middle section (12) is provided with two flexible blocking pieces (122) with middle contact, and the upper and lower sides of the antenna body mounting frame (4) are provided with protruding pieces (44) for separating the two flexible blocking pieces (122) from the middle.
4. An outdoor antenna with snow removing function according to claim 1, wherein the third cavity is separated from the second cavity by an upper partition plate (133), and the top end of the screw rod (121) passes through the upper partition plate (133) and then is connected with an upper bearing (132) arranged in the third cavity; the lower end of the upper partition plate (133) is provided with an upper sealing sleeve (134) sleeved on the screw rod (121).
5. The outdoor antenna with the snow removing function according to claim 1, wherein the second cavity is separated from the first cavity by a lower partition plate (117), and the bottom end of the screw rod (121) passes through the lower partition plate (117) and then is connected with the rotating shaft of the rotating motor (111) in the first cavity; a lower bearing (116) sleeved on the screw rod (121) is arranged below the lower partition plate (117), and a lower sealing sleeve is arranged above the lower partition plate (117).
6. An outdoor antenna with snow removing function according to claim 1, wherein the electric wire connected to the electromagnet (73) is connected to the wire take-up (113) in the first cavity after passing through the lower partition (117) from the second cavity, and is connected to the circuit assembly connected to the power grid or to the built-in battery through the outlet end of the wire take-up (113).
7. An outdoor antenna with snow removing function according to claim 1, wherein the housing of said lower section (11) is provided with an openable side door (10), and the side door (10) is provided with a control panel.
8. The outdoor antenna with snow removing function as claimed in claim 1, wherein said drawing block (322) is vertical when said vibrator piece (32) is horizontal.
9. An outdoor antenna with a snow removing function according to claim 1, wherein an upper end of the drawing block (322) is inclined toward the elastic member (71) when the vibrator piece (32) is in a horizontal state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342872.XA CN107123846B (en) | 2017-05-16 | 2017-05-16 | Outdoor antenna with snow removing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342872.XA CN107123846B (en) | 2017-05-16 | 2017-05-16 | Outdoor antenna with snow removing function |
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| Publication Number | Publication Date |
|---|---|
| CN107123846A CN107123846A (en) | 2017-09-01 |
| CN107123846B true CN107123846B (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710342872.XA Active CN107123846B (en) | 2017-05-16 | 2017-05-16 | Outdoor antenna with snow removing function |
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| Country | Link |
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| CN (1) | CN107123846B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05183315A (en) * | 1991-12-26 | 1993-07-23 | Nippon Hoso Kyokai <Nhk> | Multielement type antenna |
| US6104352A (en) * | 1998-01-19 | 2000-08-15 | Msx, Inc. | Remote testing and monitoring apparatus for use with antenna reflector deicing systems |
| CN202094306U (en) * | 2011-04-30 | 2011-12-28 | 浙江龙游公任电子有限公司 | Open antenna |
| CN105340646A (en) * | 2014-08-13 | 2016-02-24 | 衢州市优德工业设计有限公司 | Plant snow removal equipment |
| CN106245571A (en) * | 2016-08-31 | 2016-12-21 | 沈阳中兴电力通信有限公司 | Self-navigation snow removal machine people's system |
-
2017
- 2017-05-16 CN CN201710342872.XA patent/CN107123846B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05183315A (en) * | 1991-12-26 | 1993-07-23 | Nippon Hoso Kyokai <Nhk> | Multielement type antenna |
| US6104352A (en) * | 1998-01-19 | 2000-08-15 | Msx, Inc. | Remote testing and monitoring apparatus for use with antenna reflector deicing systems |
| CN202094306U (en) * | 2011-04-30 | 2011-12-28 | 浙江龙游公任电子有限公司 | Open antenna |
| CN105340646A (en) * | 2014-08-13 | 2016-02-24 | 衢州市优德工业设计有限公司 | Plant snow removal equipment |
| CN106245571A (en) * | 2016-08-31 | 2016-12-21 | 沈阳中兴电力通信有限公司 | Self-navigation snow removal machine people's system |
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| Publication number | Publication date |
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| CN107123846A (en) | 2017-09-01 |
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