Passive radar lightning protection and moisture-proof omnidirectional antenna and use method thereof

Abstract

The invention relates to a passive radar lightning protection and moisture-proof omnidirectional antenna, comprising a column, a cylindrical sleeve sleeved on the column, a plurality of cross bars fixed on the circumference of the sleeve, an antenna fixed at the end of each cross bar, the sleeve being installed on the column through an adjustable elastic component, and the installation height of the sleeve on the column is adjustable; the elastic component comprises an adjusting column movable through the cylinder wall of the sleeve, an elastic spring sleeved on the adjusting column, and a clamping block arranged at one end of the adjusting column located on the inner wall of the sleeve, an accommodating cavity for accommodating the elastic spring is arranged on the cylinder wall of the sleeve, a baffle is arranged on the part of the adjusting column located in the accommodating cavity, one end of the elastic spring abuts against the side wall of the accommodating cavity, and the other end of the elastic spring abuts against the baffle; a limited position cavity is arranged at the inner side wall of the sleeve corresponding to the clamping block, and a plurality of positioning cavities are arranged on the outer surface of the column along the longitudinal direction thereof; the invention has the advantages of being easy to use, adjustable antenna height, and firm installation of the antenna relative to the column.

Description

Technical Field

[0001] The invention belongs to the technical field of radar antenna technology, and in particular relates to a passive radar lightning-proof and moisture-proof omnidirectional antenna and a use method thereof. Background Art

[0002] The radar antenna converts the spherical wave radiated by the feed source into a plane wave through a reflector, thereby achieving directional reception or transmission of electromagnetic waves. There are various types of radar antennas currently in use. However, once these existing radar antennas are installed, their installation height cannot be effectively adjusted, and once the radar antenna is damaged, it is not convenient to replace it.

[0003] For example, a radar antenna in the prior art consists of a column and an antenna, wherein the antenna is fixed to the column by welding, so that the position of the antenna on the column is relatively fixed, and the height of the antenna on the column cannot be adjusted according to the actual situation on site. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a passive radar lightning protection and moisture-proof omnidirectional antenna which is easy to use, has an adjustable antenna height, and is firmly installed relative to a column, and a method of using the antenna.

[0005] The technical solution of the present invention is as follows:

[0006] A passive radar lightning-proof and moisture-proof omnidirectional antenna comprises a column, a cylindrical collar sleeved on the column, a plurality of cross bars are fixed to the circumference of the collar, an antenna is fixed to the end of each cross bar, the collar is mounted on the column through an adjustable elastic component, and the mounting height of the collar on the column is adjustable;

[0007] The elastic component includes an adjustment column that is movable and penetrates the cylindrical wall of the collar, an elastic spring sleeved on the adjustment column, and a clamping block arranged at one end of the adjustment column located on the inner wall of the collar, a receiving cavity for accommodating the elastic spring is arranged on the cylindrical wall of the collar, a baffle is arranged on the part of the adjustment column located in the receiving cavity, one end of the elastic spring abuts against the side wall of the receiving cavity, and the other end of the elastic spring abuts against the baffle;

[0008] The inner side wall of the collar is provided with a limiting cavity at a position corresponding to the clamping block, and the outer surface of the column is provided with a plurality of positioning cavities along the longitudinal direction thereof.

[0009] Furthermore, one end of the adjusting column facing the clamping block is rotatably clamped on the clamping block.

[0010] Furthermore, a positioning plate is provided at one end of the adjusting column that is clamped on the clamping block, and a positioning groove that is matched with the positioning plate is provided on the clamping block.

[0011] Furthermore, a positioning block is provided on the positioning plate, and the clamping block is provided with a positioning sliding groove for the positioning block to slide.

[0012] Furthermore, the positioning groove is an arc-shaped structure, and the central angle of the positioning groove is 90°.

[0013] Furthermore, a sliding block is arranged on the baffle, and a sliding groove matching with the sliding block is arranged on the cavity wall of the accommodating cavity.

[0014] Furthermore, the slide groove includes a radial section opened along the radial direction of the collar and an arc section opened along the circumferential direction of the accommodating cavity, and the radial section is connected to the arc section.

[0015] Furthermore, the central angle of the arc segment is 90°.

[0016] Furthermore, the clamping block is an arc-shaped plate, and the limiting cavity and the positioning cavity are arc-shaped grooves adapted to the shape of the clamping block.

[0017] Furthermore, the number of the elastic components is at least 3, and the multiple elastic components are evenly distributed along the circumference of the ring, and the number of the limiting grooves and the positioning grooves is the same as the number of the elastic components.

[0018] A method for using a passive radar lightning-proof and moisture-proof omnidirectional antenna comprises the following steps: pulling an adjustment column outwards so that a clamping block is completely embedded in a limiting cavity on a collar, then rotating the adjustment column so that the adjustment column is clamped on the collar, sliding the collar up and down along the adjustment column, adjusting the collar to a specified position, and then rotating the adjustment column so that the clamping block is separated from the limiting cavity and embedded in a positioning cavity.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The collar for fixing the antenna in the present invention is installed on the column through an elastic component, so that it is convenient to install and fix the collar, and it is also convenient to adjust the installation height of the collar on the column;

[0021] 2. The adjusting column of the elastic component in the present invention moves on the cylindrical wall penetrating the collar, so as to facilitate the pulling of the adjusting column along the radial direction of the collar; the elastic spring, the baffle and the inner wall of the accommodating cavity cooperate with each other, so that the clamping block is well clamped in the positioning cavity on the column, so as to achieve the fixation between the collar and the column;

[0022] 3. The present invention only needs to rotate the adjusting column to realize the limiting of the block on the adjusting column and the positioning of the adjusting column relative to the collar, which effectively improves the convenience of the present invention in installation and practical use;

[0023] In summary, the present invention has the advantages of being easy to use, adjustable antenna height, and securely mounting the antenna relative to the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a top view after removing the pillars in the present invention;

[0026] Figure 3 for Figure 2 A partial cross-sectional schematic diagram of

[0027] Figure 4 for Figure 3 A schematic diagram of the structure of the middle accommodating cavity;

[0028] Figure 5 It is a cross-sectional schematic diagram of the adjustment column and the clamping block of the present invention when they are matched;

[0029] Figure 6 for Figure 5 AA cross-sectional diagram of ;

[0030] Figure 7 It is a three-dimensional schematic diagram of the adjustment column in the present invention.

[0031] In the figure: 1, column, 2, collar, 3, cross bar, 4, adjusting column, 5, elastic spring, 6, block, 7, accommodating cavity, 8, baffle, 9, limiting cavity, 10, positioning cavity, 11, positioning plate, 12, positioning groove, 13, positioning block, 14, positioning slide groove, 15, slider, 16, slide groove, 1601, radial section, 1602, arc section, 17, antenna. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-3 As shown, a passive radar lightning protection and moisture-proof omnidirectional antenna comprises a column 1, a cylindrical collar 2 sleeved on the column 1, the top of the column 1 is provided with a lightning rod, the bottom of the column 1 can be provided with a flange (for installing the column on a lightning rod or other equipment), a plurality of cross bars 3 are fixed to the circumference of the collar 2, an antenna 17 is fixed to the end of each cross bar 3, the collar 2 is installed on the column 1 through an adjustable elastic component, and the installation height of the collar 2 on the column 1 is adjustable;

[0034] The elastic component includes an adjustment column 4 that is movable and penetrates the cylinder wall of the collar 2, an elastic spring 5 that is sleeved on the adjustment column 4, and a block 6 that is arranged on one end of the adjustment column 4 located on the inner wall of the collar 2. The cylinder wall of the collar 2 is provided with a receiving cavity 7 for accommodating the elastic spring 5. The part of the adjustment column 4 located in the receiving cavity 7 is provided with a baffle 8. The end of the adjustment column 4 located on the outer wall of the collar 2 has a bolt head for practical adjustment. One end of the elastic spring 5 abuts against the side wall of the receiving cavity 7, and the other end of the elastic spring 5 abuts against the baffle 8, so that the elastic spring 5 provides the baffle 8 with a thrust at the center of the collar 2.

[0035] A limiting cavity 9 is provided at the position where the inner wall of the collar 2 corresponds to the block 6. When the adjusting column 4 is pulled outward, the block 6 can be completely embedded in the limiting cavity 9, thereby preventing the block 6 from affecting the up and down movement of the collar 2 on the column 1 when the collar 2 is slid up and down; a plurality of positioning cavities 10 are provided on the outer surface of the column 1 along its longitudinal direction. Under the elastic force of the elastic spring 5, the block 6 is clamped in the positioning cavity 10, thereby preventing the collar 2 from sliding up and down along the column 1, and having a good fixing effect on the antenna 17.

[0036] like Figure 5-7 As shown, the end of the adjusting column 4 facing the block 6 is rotatably connected to the block 6; the end of the adjusting column 4 connected to the block 6 is provided with a positioning plate 11, and the block 6 is provided with a positioning groove 12 adapted to the positioning plate 11, and the positioning plate 11 is embedded in the positioning groove 12, so that the positioning plate 11 cannot move along the axial direction of the block 6, and the positioning plate 11 can rotate in the vertical plane of the positioning groove 12; a positioning stopper 13 is provided on the positioning plate 11, and the block 6 is provided with a positioning groove 14 for the positioning stopper 13 to slide, and the positioning groove 14 is an arc structure, and the central angle of the positioning groove 14 is 90°.

[0037] like Figure 6 As shown, the positioning groove 14 is opened in the third quadrant of the block 6, and the positioning block 13 abuts against the horizontal side wall of the positioning groove 14. In this state, when the adjusting column 4 is pulled, the block 6 will not rotate relative to the adjusting column 4, and the block 6 can be pulled into the limiting cavity 9; of course, the positioning groove 14 can also be opened in the fourth quadrant of the block 6.

[0038] like Figure 4 , 7As shown, a slider 15 is provided on the baffle 8, and a slide groove 16 matching with the slider 15 is provided on the cavity wall of the accommodating cavity 7; the slide groove 16 includes a radial section 1601 provided along the radial direction of the collar 2 and an arc section 1602 provided along the circumferential direction of the accommodating cavity 7, the radial section 1601 is connected with the arc section 1602, and the central angle of the arc section 1602 is 90°; when the adjusting column 4 is pulled, the slider 15 slides along the meridian section 1601 of the slide groove 16 toward the outer wall of the collar 2, and when the block 6 is embedded in the limiting cavity 9 , rotate the adjusting column 4, at this time, the positioning block 13 slides from the horizontal side wall of the positioning slide groove 14 to the vertical side wall of the positioning slide groove 14, and the slider 15 slides along the arc segment 1602 of the slide groove 16, so that when the positioning block 13 is adjusted to the vertical side wall, the slider 15 is clamped in the arc segment 1602, so that the clamping block 6 is clamped in the limiting cavity 9, which is convenient for sliding the collar 2 up and down; wherein, the included angle between the slider 15 and the positioning block 13 is any angle, as long as the positioning block 13 is adjusted to the numerical side wall, the slider 15 can be clamped in the arc segment 1602.

[0039] In this embodiment, the clamping block 6 is an arc-shaped plate, and the limiting cavity 9 and the positioning cavity 10 are both arc-shaped grooves adapted to the shape of the clamping block 6, so that the arc-shaped plate is completely fitted with the positioning cavity 10, so that the clamping block 6 can firmly clamp the ring 2 on the column.

[0040] In this embodiment, the number of the elastic components is at least 3, and the multiple elastic components are evenly distributed along the circumference of the ring 2. The number of the limiting grooves 9 and the positioning grooves 10 is the same as the number of the elastic components; thereby effectively improving the stability of the fixing of the block 6 between the ring 2 and the column 1.

[0041] A method for using a passive radar lightning-proof and moisture-proof omnidirectional antenna is provided. The adjusting column 4 is pulled outward so that a clamping block 6 is completely embedded in a limiting cavity 9 on a collar 2. The adjusting column 4 is then rotated so that the adjusting column 4 is clamped on the collar 2. The collar 2 is slid up and down along the adjusting column 4. After the collar 2 is adjusted to a specified position, the adjusting column 4 is rotated so that the clamping block 6 is disengaged from the limiting cavity 9 and embedded in a positioning cavity 10.

[0042] According to the present invention, before installing the antenna, the card blocks 6 are all embedded in the limiting cavity 9. After the collar 2 is sleeved on the positioning cavity 10 corresponding to a certain horizontal plane on the column 1, the adjusting column 4 is rotated to rotate the positioning block 13 to the horizontal side wall of the positioning slide groove 14. At this time, the slider 16 disengages from the arc section 1602 of the slide groove 16 and enters the meridian section 1601. After the user releases the adjusting column 4, the card block 6 abuts against the positioning cavity 10 of the column 1 under the elastic force of the elastic spring 5. With the cooperation of multiple elastic components, the collar 2 is effectively fixed on the column 1.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A passive radar lightning protection and moisture-proof omnidirectional antenna, comprising a column (1), a cylindrical ring (2) sleeved on the column (1), a plurality of cross bars (3) fixed to the circumference of the ring (2), an antenna (17) fixed to the end of each cross bar (3), characterized in that: The collar (2) is mounted on the column (1) via an adjustable elastic component, and the mounting height of the collar (2) on the column (1) is adjustable; The elastic component comprises an adjusting column (4) movable through the wall of the sleeve (2), an elastic spring (5) sleeved on the adjusting column (4), and a clamping block (6) arranged at one end of the adjusting column (4) located on the inner wall of the sleeve (2); a receiving cavity (7) for receiving the elastic spring (5) is arranged on the wall of the sleeve (2); a baffle (8) is arranged on the portion of the adjusting column (4) located in the receiving cavity (7); one end of the elastic spring (5) abuts against the side wall of the receiving cavity (7), and the other end of the elastic spring (5) abuts against the baffle (8); A limiting cavity (9) is provided at a position corresponding to the inner side wall of the collar (2) and the clamping block (6), and a plurality of positioning cavities (10) are provided on the outer surface of the column (1) along its longitudinal direction; One end of the adjusting column (4) facing the clamping block (6) is rotatably clamped on the clamping block (6); A sliding block (15) is provided on the baffle plate (8), and a sliding groove (16) matching with the sliding block (15) is provided on the cavity wall of the accommodating cavity (7).

2. The passive radar lightning protection and moisture-proof omnidirectional antenna according to claim 1, characterized in that: A positioning plate (11) is provided at one end of the adjustment column (4) that is clamped on the clamping block (6), and a positioning groove (12) that matches the positioning plate (11) is provided on the clamping block (6).

3. The passive radar lightning protection and moisture-proof omnidirectional antenna according to claim 2, characterized in that: The positioning plate (11) is provided with a positioning stopper (13), and the clamping block (6) is provided with a positioning sliding groove (14) for the positioning stopper (13) to slide.

4. The passive radar lightning protection and moisture-proof omnidirectional antenna according to claim 3 is characterized in that: The positioning slide groove (14) is an arc-shaped structure, and the center angle of the positioning slide groove (14) is 90°.

5. The passive radar lightning protection and moisture-proof omnidirectional antenna according to claim 1, characterized in that: The slide groove (16) comprises a radial section (1601) opened along the radial direction of the collar (2) and an arc section (1602) opened along the circumference of the accommodating cavity (7), and the radial section (1601) is connected to the arc section (1602).

6. The passive radar lightning protection and moisture-proof omnidirectional antenna according to claim 5, characterized in that: The center angle of the arc segment (1602) is 90°.

7. The passive radar lightning protection and moisture-proof omnidirectional antenna according to any one of claims 1 to 6, characterized in that: The clamping block (6) is an arc-shaped plate, and the limiting cavity (9) and the positioning cavity (10) are both arc-shaped grooves that match the shape of the clamping block (6).

Images