Scanning frame for scanning antenna in quiet zone

Abstract

The utility model relates to a scanning frame for a static area scanning antenna. The scanning frame comprises an angle adjusting seat, a first translation seat connected to the angle adjusting seat, and an antenna polarization rotary table installed on the first translation seat. The angle adjusting seat comprises a rotating angle adjusting mechanism, a pitching angle adjusting mechanism and a first connecting seat; the first connecting seat is mounted on a rotating shaft of the rotating angle adjusting mechanism; the rotation angle adjusting mechanism is supported on the pitching angle adjusting mechanism; the pitching angle adjusting mechanism is used for adjusting the inclination angle of the rotating shaft of the rotating angle adjusting mechanism in the vertical direction. According to the utility model, the pitching adjustment of the installed structure can be flexibly realized through the arranged pitching angle adjusting mechanism, so that the use of the utility model is more convenient and flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of compact field testing, in particular to a scanning frame used for a quiet zone scanning antenna. Background Art

[0002] At present, in the field of electrical performance detection in the quiet zone, according to GJB8480-2015 "Compact Field Performance Measurement Method", the theoretical equiphase plane is used as the test plane, which is orthogonal to the compact field radiation axis. Generally, three test planes should be selected in the front, middle and back of the quiet zone. In the test plane, horizontal and vertical lines are made through the center point, and the amplitude and phase characteristics are measured on this cross line. The field amplitude characteristics and phase characteristics in the quiet zone are usually measured by scanning method. The measurement principle of the scanning method is to move the antenna in the test plane in the quiet zone to measure whether the amplitude change and phase change of the field meet the requirements. In the ideal plane wave case, the measured field amplitude is consistent and the phase is constant. In actual cases, it is impossible to meet the ideal requirements due to reasons such as the processing accuracy of the reflective surface, edge diffraction, direct leakage of the feed source, and surrounding reflections. The actual performance of the compact field can be expressed by the field amplitude characteristics and phase characteristics in the compact field quiet zone test plane. The field amplitude characteristics are generally expressed by amplitude changes, and the field phase characteristics are generally expressed by phase changes. The measurement contents include amplitude taper, amplitude ripple, phase change and cross polarization of the main polarization field in the quiet zone. Therefore, in view of this requirement, a scanning frame needs to be designed and the antenna needs to be installed on the polarization turntable of the scanning frame to realize the planar motion of the detection antenna for the above measurements. Utility Model Content

[0003] The utility model aims to provide a scanning frame for a quiet zone scanning antenna, which is used for the quiet zone scanning antenna to complete the planar movement in a test plane in the form of rectangular coordinates or polar coordinates.

[0004] To achieve the above utility model object, the utility model provides a scanning frame for a quiet zone scanning antenna, comprising: an angle adjustment seat, a first translation seat connected to the angle adjustment seat, and an antenna polarization turntable installed on the first translation seat;

[0005] The angle adjustment seat comprises: a rotation angle adjustment mechanism, a pitch angle adjustment mechanism and a first connecting seat;

[0006] The first connecting seat is installed on the rotating shaft of the rotating angle adjustment mechanism;

[0007] The rotation angle adjustment mechanism is supported on the pitch angle adjustment mechanism;

[0008] The pitch angle adjustment mechanism is used to adjust the inclination angle of the rotating shaft of the rotation angle adjustment mechanism along the vertical direction.

[0009] According to one aspect of the utility model, the pitch angle adjustment mechanism comprises: a first mounting base plate, a first pitch plate arranged above the first mounting base plate, a first rotating support and a pitch limit seat arranged on the first mounting base plate, and a pitch driving structure for adjusting the tilt angle of the first pitch plate;

[0010] Along the first direction of the first mounting base plate, the first rotating support and the pitch limiting seat are arranged at intervals;

[0011] Along the second direction of the first mounting base plate, two first rotating supports are arranged at intervals, and a pitch rotation axis is rotatably connected to the two first rotating supports;

[0012] Along the second direction of the first mounting base plate, two pitch limit seats are arranged at intervals, and an arc-shaped limit groove is arranged at the upper end of the pitch limit seat;

[0013] Along the first direction, one end of the first pitch plate is fixedly connected to the pitch rotation axis, and the other end thereof is provided with a sliding limit shaft for sliding connection with the arc-shaped limit groove;

[0014] The pitch driving structure is connected to the first pitch plate and the first mounting base plate respectively, so as to drive the first pitch plate to rotate along the pitch rotation axis.

[0015] According to one aspect of the utility model, the pitch drive structure comprises: a first support, a second support and a pitch drive screw;

[0016] The first support is connected to the first pitch plate;

[0017] The second support is connected to the first mounting base plate, and a pitch control nut is arranged on the second support;

[0018] The pitch driving screw is transmission-connected to the pitch control nut, and the upper end of the pitch driving screw is rotationally connected to the first support.

[0019] According to one aspect of the utility model, the rotation angle adjustment mechanism is connected to the first pitch plate, and is located directly above the pitch rotation axis;

[0020] The rotation angle adjustment mechanism is a worm gear mechanism, and its rotation axis is fixedly connected to the first connecting seat;

[0021] The axial direction of the rotation axis of the rotation angle adjustment mechanism is arranged perpendicular to the pitch rotation axis.

[0022] According to one aspect of the utility model, the first translation seat comprises: a first translation support, a first slide rail assembly and a first rack arranged on the first translation support;

[0023] The length direction of the first translation support is arranged perpendicular to the axial direction of the rotation axis of the rotation angle adjustment mechanism;

[0024] Along the width direction of the first translation support, two first slide rail assemblies are arranged at intervals;

[0025] The first rack is arranged adjacent to and parallel to one of the first slide rail assemblies.

[0026] According to one aspect of the utility model, the antenna polarization turntable comprises: a turntable support, a first drive and antenna rotation seat supported on the turntable support;

[0027] The turntable support is connected to the first slide rail assembly;

[0028] The first drive is connected to the first rack to drive the antenna polarization turntable to reciprocate along the first translation seat;

[0029] The axial direction of the rotation axis of the antenna rotating seat is arranged parallel to the axial direction of the rotation axis of the rotation angle adjustment mechanism;

[0030] The first drive comprises: a first drive motor and a first gear connected to a rotating shaft of the first drive motor;

[0031] The first gear is meshed with the first rack;

[0032] The antenna rotating seat comprises: a second driving motor, a second gear connected to the rotating shaft of the second driving motor, and a rotating seat body;

[0033] The rotating seat body is rotatably connected to the turntable support, and the second driving motor is fixedly connected to the turntable support;

[0034] The outer side surface of the rotating seat body is provided with connecting teeth, and the second gear is meshed with the connecting teeth to drive the rotating seat body to rotate.

[0035] According to one aspect of the utility model, it also includes: a support seat;

[0036] The angle adjustment seat is supported on the support seat;

[0037] The support base comprises: a horizontal moving platform, a first rotating platform arranged on the horizontal moving platform, and a supporting rod arranged on the first rotating platform;

[0038] When the first translation seat is in a horizontal state, the length direction of the horizontal moving platform is arranged perpendicular to the length direction of the first translation seat.

[0039] According to one aspect of the utility model, the horizontal moving platform comprises: a horizontal support, a horizontal slide rail assembly, a second rack and a horizontal moving seat arranged on the horizontal support, and a horizontal moving drive supported on the horizontal moving seat;

[0040] Along the width direction of the horizontal support, two horizontal slide rail assemblies are arranged at intervals;

[0041] The second rack is arranged adjacent to and parallel to one of the horizontal slide rail assemblies;

[0042] The horizontal movable seat is supported on the horizontal slide rail assembly;

[0043] The horizontal movement drive comprises: a movement drive and a third gear connected to the rotation shaft of the movement drive;

[0044] The mobile driver is connected to the horizontal moving seat;

[0045] The third gear is meshingly connected with the second rack.

[0046] According to one aspect of the utility model, it also includes: a rotating base and an auxiliary support;

[0047] The rotating base and the auxiliary support are respectively connected to the supporting seat;

[0048] The rotating base and the auxiliary support are arranged at intervals along the length direction of the supporting seat;

[0049] Along the length direction of the support seat, a plurality of auxiliary supports are arranged at intervals.

[0050] According to one aspect of the utility model, the rotating base comprises: a second turntable and a base cylinder;

[0051] The second turntable is supported on the base cylinder;

[0052] The auxiliary support comprises: a connecting support plate, and an adjustable support column connected to the connecting support plate;

[0053] A plurality of adjustable support columns are arranged at intervals on the lower side of the connecting support plate.

[0054] According to a solution of the utility model, the utility model can flexibly implement the pitch adjustment of the installed structure through the provided pitch angle adjustment mechanism, so that the use of the utility model is more convenient and flexible.

[0055] According to a solution of the utility model, a rotation angle adjustment mechanism is used to achieve adjustment of the first translation seat within a large angle range. In particular, it can be rotated to a vertical position, thereby making the scanning range of the utility model wider. In addition, the first translation seat can be conveniently folded up for easy transportation and packaging.

[0056] Through the above-mentioned arrangement, a worm gear mechanism is used as the rotation angle adjustment structure, which has the advantages of large adjustment torque and high cutting accuracy, so that stable support for the large-mass first translation seat and the antenna polarization turntable and accurate angle adjustment can be easily achieved. In addition, the worm gear mechanism also has the advantage of self-locking, which can effectively prevent rotation transition during the adjustment process and ensure reliable adjustment of large loads.

[0057] According to a solution of the utility model, the large-scale movement of the structure supported above can be conveniently achieved through the support seat provided, so that it has a larger scope of use, making the large-scale use of this solution more beneficial.

[0058] According to a solution of the utility model, the entire structure supported by the rotating base can be rotated as a whole based on the provided rotating base, so that it can be more flexible in the compact field test. In addition, the auxiliary support can more stably support the upper structure, which is beneficial to ensure the stable and reliable installation of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 is a schematic diagram showing the overall structure of a scanning frame according to an embodiment of the utility model;

[0060] Figure 2 is a schematic diagram showing the upper structure of a scanning frame according to an embodiment of the utility model;

[0061] Figure 3 is a schematic diagram showing the upper rear view structure of a scanning frame according to an embodiment of the utility model;

[0062] Figure 4 is a structural diagram schematically showing an antenna polarization rotating station according to an embodiment of the utility model;

[0063] Figure 5 is a structural diagram schematically showing a support seat according to an embodiment of the utility model;

[0064] Figure 6 Schematically shows a structure diagram of a horizontal movement drive according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0065] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the drawings required for the implementation are briefly introduced below. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0066] When describing the embodiments of the present invention, the orientation or positional relationship expressed by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or positional relationship shown in the relevant drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0067] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The implementation methods cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following implementation methods.

[0068] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to an embodiment of the present invention, a scanning frame for a quiet zone scanning antenna of the present invention comprises: an angle adjustment seat 11, a first translation seat 12 connected to the angle adjustment seat 11, and an antenna polarization turntable 13 installed on the first translation seat 12; in this embodiment, the angle adjustment seat 11 comprises: a rotation angle adjustment mechanism 111, a pitch angle adjustment mechanism 112 and a first connecting seat 113; wherein the first connecting seat 113 is installed on the rotation axis of the rotation angle adjustment mechanism 111; the rotation angle adjustment mechanism 111 is supported on the pitch angle adjustment mechanism 112. In this embodiment, the pitch angle adjustment mechanism 112 is used to adjust the inclination angle of the rotation axis of the rotation angle adjustment mechanism 111 along the vertical direction.

[0069] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, according to an embodiment of the utility model, the pitch angle adjustment mechanism 112 includes: a first mounting base plate 1121, a first pitch plate 1122 arranged above the first mounting base plate 1121, a first rotating support 1123 and a pitch limiting seat 1124 arranged on the first mounting base plate 1121, and a pitch driving structure 1125 for adjusting the tilt angle of the first pitch plate 1122; wherein, the first mounting base plate 1121 can be set as a rectangular plate, and along the first direction of the first mounting base plate 1121, the first rotating support 1123 and the pitch limiting seat 1124 are arranged at intervals; along the second direction of the first mounting base plate 1121, two first rotating supports 1123 are arranged at intervals, and a pitch rotation axis 1123a is rotatably connected to the two first rotating supports 1123; wherein, the first direction and the second direction are perpendicular to each other. In this embodiment, along the second direction of the first mounting base plate 1121 , two pitch limiting seats 1124 are arranged at intervals, and an arc-shaped limiting groove is arranged at the upper end of the pitch limiting seat 1124 .

[0070] In this embodiment, along the first direction, one end of the first pitch plate 1122 is fixedly connected to the pitch shaft 1123a, and the other end thereof is provided with a sliding limit shaft for sliding connection with the arc limit groove; specifically, the lower side of the first pitch plate 1122 is fixedly connected to the pitch shaft 1123a, so that the first pitch plate 1122 can swing up and down along the pitch shaft 1123a, thereby achieving the adjustment of the pitch angle. Accordingly, a sliding limit shaft is provided on the side of the other end of the first pitch plate 1122 to achieve sliding connection with the arc limit groove. In this embodiment, the length of the arc limit groove can be set according to the range of the pitch angle of the first pitch plate 1122 to ensure the limitation of its pitch angle range.

[0071] In this embodiment, the interval between the two first rotating supports 1123 is at least equal to the side length of the first pitch plate 1122, and correspondingly, the interval between the two pitch limit seats 1124 is at least equal to the side length of the first pitch plate 1122, thereby conveniently achieving reliable adjustment of the pitch angle of the first pitch plate 1122.

[0072] In this embodiment, the pitch drive structure 1125 is respectively connected to the first pitch plate 1122 and the first mounting base plate 1121, so as to drive the first pitch plate 1122 to rotate along the pitch rotation axis 1123a; wherein, the pitch drive structure 1125 includes: a first support 1125a, a second support 1125b and a pitch drive screw 1125c; in this embodiment, the first support 1125a is connected to the first pitch plate 1122; the second support 1125b is connected to the first mounting base plate 1121, and a pitch control nut is provided on the second support 1125b; wherein, the pitch drive screw 1125c is transmission connected to the pitch control nut, and its upper end is rotationally connected to the first support 1125a. In this embodiment, in order to adapt to the swing generated when the pitch driving screw 1125c drives the first pitch plate 1122, the pitch control nut can be rotatably connected to the second support 1125b to ensure flexible movement of the pitch driving screw 1125c.

[0073] In this embodiment, in order to facilitate the driving function of the pitch driving structure 1125, a hand wheel can be installed at the end of the pitch driving screw 1125c to facilitate its rotation.

[0074] In this embodiment, to facilitate the installation of the second support 1125b and the first mounting base plate 1121 and avoid interference with the pitch drive screw 1125c, a notch can be provided at the end of the first mounting base plate 1121 so that the pitch control nut is located in the notch position.

[0075] Through the above arrangement, the utility model can flexibly implement the pitch adjustment of the installed structure through the pitch angle adjustment mechanism 112, so that the use of the utility model is more convenient and flexible.

[0076] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to an embodiment of the present invention, the rotation angle adjustment mechanism 111 is connected to the first pitch plate 1122, and is located directly above the pitch rotation axis 1123a; wherein the rotation angle adjustment mechanism 111 is a worm gear mechanism, and its rotation axis is fixedly connected to the first connection seat 113. In this embodiment, the axial direction of the rotation axis of the rotation angle adjustment mechanism 111 is perpendicular to the pitch rotation axis 1123a, thereby conveniently and accurately realizing the pitch adjustment of the rotation axis of the rotation angle adjustment mechanism 111 in the vertical direction.

[0077] In this embodiment, the rotation angle adjustment mechanism 111 can use a motor as a driver to control the rotation adjustment of the angle. In addition, a hand wheel can be set at the tail end of the motor shaft to achieve manual or electric flexible control.

[0078] Through the above arrangement, by adopting the rotation angle adjustment mechanism 111, the first translation seat 12 can be adjusted within a large angle range. In particular, it can be rotated to a vertical position, thereby making the scanning range of the utility model wider. In addition, the first translation seat 12 can be conveniently folded up for transportation and packaging.

[0079] Through the above-mentioned arrangement, a worm gear mechanism is used as the rotation angle adjustment structure, which has the advantages of large adjustment torque and high cutting accuracy, so that stable support for the large-mass first translation seat 12 and the antenna polarization turntable 13 and accurate angle adjustment can be easily achieved. In addition, the worm gear mechanism adopted also has the advantage of self-locking, which can effectively prevent rotation transition during the adjustment process, thereby ensuring reliable adjustment of large loads.

[0080] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to an embodiment of the present invention, the first connection seat 113 can be set as an L-shaped structure, which includes: a vertical connection plate and a horizontal support member; wherein the vertical connection plate is arranged perpendicular to the horizontal support member, and the horizontal support member is arranged on one side of the vertical connection plate. Accordingly, in order to facilitate the connection between the first connection seat 113 and the rotation angle adjustment mechanism 111, a connection sleeve can be arranged on one side of the vertical connection plate, and connected to the rotation axis of the rotation angle adjustment mechanism 111 through the arranged connection sleeve. In this embodiment, in order to ensure the reliable connection between the connection sleeve and the vertical connection plate, reinforcing ribs can be arranged around the connection sleeve and the vertical connection plate to ensure the reliability of the installation position.

[0081] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to an embodiment of the utility model, the first translation seat 12 includes: a first translation support 121, a first slide rail assembly 122 and a first rack 123 arranged on the first translation support 121; wherein the length direction of the first translation support 121 is arranged perpendicular to the axial direction of the rotation axis of the rotation angle adjustment mechanism 111. In this embodiment, the first translation support 121 is a U-shaped structure as a whole, and the first translation support 121 can be formed by splicing profiles. wherein, along the width direction of the first translation support 121, two first slide rail assemblies 122 are arranged at intervals, that is, the first slide rail assemblies 122 can be arranged on two protruding side walls of the first translation support 121. further, the first rack 123 is arranged adjacent to and parallel to a first slide rail assembly 122; wherein the first rack 123 and the first slide rail assembly 122 are arranged at intervals, so that the first slide rail assembly 122 can operate stably.

[0082] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to an embodiment of the present utility model, the antenna polarization turntable 13 includes: a turntable support 131, a first drive 132 supported on the turntable support 131, and an antenna rotating seat 133; wherein the turntable support 131 can be set as a rectangular hollow shell, and its lower end can be connected to the first slide rail assembly 122; further, it can reciprocate along the first translation seat 12 under the driving action. In this embodiment, the first drive 132 is connected to the first rack 123 to drive the antenna polarization turntable 13 to reciprocate along the first translation seat 12; further, the rotation axis of the antenna rotating seat 133 is arranged parallel to the rotation axis of the rotation angle adjustment mechanism 111.

[0083] In this embodiment, the first drive 132 includes: a first drive motor 1321 and a first gear 1322 connected to the rotating shaft of the first drive motor 1321; wherein the first gear 1322 is meshed with the first rack 123. Through the above arrangement, the gear rack meshing transmission mode is adopted, which can effectively simplify the volume of the transmission structure, so that the structure of the utility model is simpler and more compact.

[0084] In this embodiment, the antenna rotating seat 133 includes: a second driving motor 1331, a second gear 1332 connected to the rotating shaft of the second driving motor 1331, and a rotating seat body 1333; the rotating seat body 1333 is rotatably connected to the front side wall of the turntable support 131, and the second driving motor 1331 is fixedly connected to the front side wall of the turntable support 131, wherein the rotating seat body 1333 and the second driving motor 1331 are located on opposite sides of the front side wall of the turntable support 131, and the rotating shaft of the second driving motor 1331 passes through the front side wall of the turntable support 131, so that the second gear 1332 can be installed on the outside of the front side wall of the turntable support 131. In this embodiment, the outer side surface of the rotating seat body 1333 is provided with connecting teeth, and the second gear 1332 is meshed with the connecting teeth to drive the rotating seat body 1333 to rotate.

[0085] Combination Figure 1 , Figure 5 and Figure 6As shown, according to an embodiment of the present invention, the scanning frame of the present invention further includes: a support seat 14; wherein the angle adjustment seat 11 is supported on the support seat 14. In this embodiment, the support seat 14 includes: a horizontal moving table 141, a first turntable 142 arranged on the horizontal moving table 141, and a support rod 143 arranged on the first turntable 142; wherein, when the first translation seat 12 is in a horizontal state, the length direction of the horizontal moving table 141 is arranged perpendicular to the length direction of the first translation seat 12. In this embodiment, the support rod 143 can be formed by a plurality of rod body parts coaxially connected to each other, wherein adjacent rod body parts are connected in a detachable manner, for example, by a threaded connector.

[0086] Through the above arrangement, the support seat 14 can be used to conveniently realize a large-scale movement of the structure supported above, so that it has a larger scope of use, making the large-scale use of this solution more beneficial.

[0087] Combination Figure 1 , Figure 5 and Figure 6 As shown, according to an embodiment of the utility model, the horizontal moving platform 141 includes: a horizontal support 1411, a horizontal slide rail assembly 1412, a second rack 1413 and a horizontal moving seat 1414 arranged on the horizontal support 1411, and a horizontal moving drive 1415 supported on the horizontal moving seat 1414; in this embodiment, the horizontal support 1411 can be set as a rectangular frame structure, which can be specifically composed of profiles connected to each other.

[0088] In this embodiment, two horizontal slide rail assemblies 1412 are arranged at intervals along the width direction of the horizontal support 1411 ; and the second rack 1413 is arranged adjacent to and parallel to one horizontal slide rail assembly 1412 .

[0089] In this embodiment, the horizontal moving seat 1414 is supported on the horizontal slide rail assembly 1412, wherein the horizontal moving seat 1414 is a rectangular plate as a whole, and its edge can be connected to the slider on the horizontal slide rail assembly 1412, thereby realizing movement along the length direction of the horizontal support 1411.

[0090] In this embodiment, the horizontal moving drive 1415 includes: a moving drive 1415a and a third gear 1415b connected to the rotating shaft of the moving drive 1415a; wherein the moving drive 1415a is connected to the horizontal moving seat 1414; and the third gear 1415b is meshedly connected to the second rack 1413. In this embodiment, the moving drive 1415a can use a motor as a drive to achieve electric driving, and accordingly, a hand wheel can be provided on the moving drive 1415a to achieve flexible setting of the driving mode.

[0091] like Figure 1 As shown, according to an embodiment of the utility model, the scanning frame of the utility model also includes: a rotating base 15 and an auxiliary support 16; wherein, the rotating base 15 and the auxiliary support 16 are respectively connected to the supporting base 14, and the rotating base 15 and the auxiliary support 16 are respectively arranged on the lower side of the supporting base 14; specifically, along the length direction of the supporting base 14, the rotating base 15 and the auxiliary support 16 are arranged at intervals; along the length direction of the supporting base 14, a plurality of auxiliary supports 16 (for example, two) are arranged at intervals.

[0092] Through the above arrangement, the entire structure supported by the rotating base 15 can be rotated as a whole, so that it can be more flexible in the compact field test. In addition, the auxiliary support 16 can more stably support the upper structure, which is beneficial to ensure the stable and reliable installation of the utility model.

[0093] like Figure 1 As shown, according to an embodiment of the present utility model, the rotating base 15 includes: a second turntable 151 and a base cylinder 152 ; wherein the second turntable 151 is supported on the base cylinder 152 , and the second turntable 151 is used to connect with the supporting seat 14 .

[0094] In this embodiment, the auxiliary support 16 includes: a connecting support plate 161, and an adjustable support column 162 connected to the connecting support plate 161; wherein, a plurality of (for example, two) adjustable support columns 162 are arranged at intervals on the lower side of the connecting support plate 161. In this embodiment, the adjustable support column 162 can be an electric telescopic rod, or can be set as a manual telescopic rod.

[0095] like Figure 1 As shown, according to an embodiment of the utility model, the scanning frame of the present invention for the quiet zone scanning antenna can complete the planar movement in the test plane in the form of rectangular coordinates or polar coordinates; in this embodiment, the scanning range of the scanning frame meets the measurement requirements, and the flatness error and straightness error are preferably better than 1 / 10 of the phase requirement of the compact field, which can minimize the influence of the reflection of the scanning frame on the measurement result. In addition, the scanning frame of the utility model also has the advantages of accurate positioning and programmable control.

[0096] Taking the 3m quiet zone compact field quiet zone detection as an example, the index parameters of the scanning frame of the utility model are shown in Table 1.

[0097] Table 1

[0098]

[0099]

[0100] The above contents are merely examples of specific solutions of the present invention. For the equipment and structures not described in detail, it should be understood that they are implemented by adopting the general equipment and general methods available in the art.

[0101] The above is only one solution of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A scanning frame for a quiet zone scanning antenna, characterized in that: include: An angle adjustment seat (11), a first translation seat (12) connected to the angle adjustment seat (11), and an antenna polarization rotating platform (13) mounted on the first translation seat (12); The angle adjustment seat (11) comprises: a rotation angle adjustment mechanism (111), a pitch angle adjustment mechanism (112) and a first connection seat (113); The first connecting seat (113) is installed on the rotating shaft of the rotating angle adjustment mechanism (111); The rotation angle adjustment mechanism (111) is supported on the pitch angle adjustment mechanism (112); The pitch angle adjustment mechanism (112) is used to adjust the inclination angle of the rotation axis of the rotation angle adjustment mechanism (111) along the vertical direction.

2. The scanning frame according to claim 1, characterized in that: The pitch angle adjustment mechanism (112) comprises: a first mounting base plate (1121), a first pitch plate (1122) arranged above the first mounting base plate (1121), a first rotating support (1123) and a pitch limiting seat (1124) arranged on the first mounting base plate (1121), and a pitch driving structure (1125) for adjusting the tilt angle of the first pitch plate (1122); Along a first direction of the first mounting base plate (1121), the first rotating support (1123) and the pitch limiting seat (1124) are arranged at intervals; Along the second direction of the first mounting base plate (1121), two first rotating supports (1123) are arranged at intervals, and a pitch rotation axis (1123a) is rotatably connected to the two first rotating supports (1123); Along the second direction of the first mounting base plate (1121), two pitch limit seats (1124) are arranged at intervals, and an arc-shaped limit groove is arranged at the upper end of the pitch limit seat (1124); Along the first direction, one end of the first pitch plate (1122) is fixedly connected to the pitch rotation axis (1123a), and the other end thereof is provided with a sliding limit axis for sliding connection with the arc-shaped limit groove; The pitch driving structure (1125) is connected to the first pitch plate (1122) and the first mounting base plate (1121) respectively, so as to drive the first pitch plate (1122) to rotate along the pitch rotation axis (1123a).

3. The scanning frame according to claim 2, characterized in that: The pitch driving structure (1125) comprises: a first support (1125a), a second support (1125b) and a pitch driving screw (1125c); The first support (1125a) is connected to the first pitch plate (1122); The second support (1125b) is connected to the first mounting base plate (1121), and a pitch control nut is arranged on the second support (1125b); The pitch driving screw rod (1125c) is transmission-connected to the pitch control nut, and the upper end thereof is rotationally connected to the first support (1125a).

4. The scanning frame according to claim 3, characterized in that: The rotation angle adjustment mechanism (111) is connected to the first pitch plate (1122), and is located directly above the pitch rotation axis (1123a); The rotation angle adjustment mechanism (111) is a worm gear mechanism, and its rotation axis is fixedly connected to the first connection seat (113); The axial direction of the rotation axis of the rotation angle adjustment mechanism (111) is arranged perpendicular to the pitch rotation axis (1123a).

5. The scanning frame according to claim 4, characterized in that: The first translation seat (12) comprises: a first translation support (121), a first slide rail assembly (122) and a first rack (123) arranged on the first translation support (121); The length direction of the first translation support (121) is arranged perpendicular to the axial direction of the rotation axis of the rotation angle adjustment mechanism (111); Along the width direction of the first translation support (121), two first slide rail assemblies (122) are arranged at intervals; The first rack (123) is arranged adjacent to and parallel to one of the first slide rail components (122).

6. The scanning frame according to claim 5, characterized in that: The antenna polarization turntable (13) comprises: a turntable support (131), a first drive (132) and an antenna rotating seat (133) supported on the turntable support (131); The turntable support (131) is connected to the first slide rail assembly (122); The first drive (132) is connected to the first rack (123) to drive the antenna polarization rotating platform (13) to move back and forth along the first translation seat (12); The axial direction of the rotation axis of the antenna rotating seat (133) is arranged parallel to the axial direction of the rotation axis of the rotation angle adjustment mechanism (111); The first drive (132) comprises: a first drive motor (1321) and a first gear (1322) connected to the rotating shaft of the first drive motor (1321); The first gear (1322) is meshedly connected with the first rack (123); The antenna rotating seat (133) comprises: a second driving motor (1331), a second gear (1332) connected to the rotating shaft of the second driving motor (1331), and a rotating seat body (1333); The rotating seat body (1333) is rotatably connected to the turntable support (131), and the second driving motor (1331) is fixedly connected to the turntable support (131); The outer side surface of the rotating seat body (1333) is provided with connecting teeth, and the second gear (1332) is meshed with the connecting teeth to drive the rotating seat body (1333) to rotate.

7. The scanning frame according to claim 6, characterized in that: Also includes: Support seat (14); The angle adjustment seat (11) is supported on the support seat (14); The support seat (14) comprises: a horizontal moving platform (141), a first rotating platform (142) arranged on the horizontal moving platform (141), and a supporting rod (143) arranged on the first rotating platform (142); When the first translation seat (12) is in a horizontal state, the length direction of the horizontal moving platform (141) is arranged perpendicular to the length direction of the first translation seat (12).

8. The scanning frame according to claim 7, characterized in that: The horizontal moving platform (141) comprises: a horizontal support (1411), a horizontal slide rail assembly (1412) arranged on the horizontal support (1411), a second rack (1413) and a horizontal moving seat (1414), and a horizontal moving drive (1415) supported on the horizontal moving seat (1414); Along the width direction of the horizontal support (1411), two horizontal slide rail assemblies (1412) are arranged at intervals; The second rack (1413) is arranged adjacent to and parallel to one of the horizontal slide rail assemblies (1412); The horizontal movable seat (1414) is supported on the horizontal slide rail assembly (1412); The horizontal movement drive (1415) comprises: a movement drive (1415a) and a third gear (1415b) connected to the rotating shaft of the movement drive (1415a); The moving driver (1415a) is connected to the horizontal moving seat (1414); The third gear (1415b) is meshingly connected with the second rack (1413).

9. The scanning frame according to claim 8, characterized in that: Also includes: Rotating base (15) and auxiliary support (16); The rotating base (15) and the auxiliary support (16) are respectively connected to the supporting base (14); Along the length direction of the support seat (14), the rotating base (15) and the auxiliary support (16) are arranged at intervals; A plurality of auxiliary supports (16) are arranged at intervals along the length direction of the support seat (14).

10. The scanning frame according to claim 9, characterized in that: The rotating base (15) comprises: a second rotating table (151) and a base cylinder (152); The second turntable (151) is supported on the base cylinder (152); The auxiliary support (16) comprises: a connecting support plate (161), and an adjustable support column (162) connected to the connecting support plate (161); A plurality of adjustable support columns (162) are arranged at intervals on the lower side of the connecting support plate (161).

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