Multi-antenna satellite outdoor testing device

Abstract

The utility model relates to antenna test technical field provides a kind of multi-antenna satellite outdoor testing device, including fixed base, rotary table, anti-winding support and drive assembly;Rotary table is rotatably arranged in fixed base, multiple mounting seats are arranged along the circumference interval on rotary table, and mounting seat is used to install the antenna to be measured, and the center of rotary table is provided with the cable via hole for cable threading;Anti-winding support includes mounting column, first swing bar, second swing bar and cable fixing part, mounting column is arranged in rotary table along vertical direction, the first end of first swing bar is rotatably connected with the top end of mounting column, the first end of second swing bar is rotatably connected with the second end of first swing bar, and cable fixing part is connected with the second end of second swing bar;Drive assembly is used to drive rotary table to rotate relative to fixed base.The multi-antenna satellite outdoor testing device provided by the utility model is used to solve the defects that test rotary table cannot satisfy outdoor dynamic test demand and cannot satisfy multiple antenna simultaneous measurement in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of antenna testing technology, and in particular to an outdoor testing device for multi-antenna satellites. Background Technology

[0002] All types of antennas, including communication antennas, radar antennas, satellite navigation antennas, or other civilian antennas, must have their performance and parameters tested before use.

[0003] In the existing technology, the main testing tool used for various antennas is the test turntable. However, the existing test turntable can only perform indoor static testing, cannot meet the needs of outdoor dynamic testing, and cannot measure multiple antennas at the same time. Utility Model Content

[0004] This invention provides a multi-antenna satellite outdoor testing device to solve the shortcomings of existing technology where the test turntable cannot meet the requirements of outdoor dynamic testing and cannot meet the requirements of simultaneous measurement of multiple antennas.

[0005] This utility model provides an outdoor testing device for multi-antenna satellites, including: a fixed base, a turntable, an anti-tangle bracket, and a drive assembly.

[0006] The turntable is rotatably mounted on the fixed base. Multiple mounting seats are spaced circumferentially along the turntable's edge. Each mounting seat is used to mount the antenna under test. A cable through-hole for threading cables is located at the center of the turntable. The anti-tangle bracket includes a mounting column, a first swing arm, a second swing arm, and a cable fixing part. The mounting column is vertically mounted on the turntable. The first end of the first swing arm is rotatably connected to the top of the mounting column, allowing the first swing arm to swing horizontally around the top of the mounting column. The first end of the second swing arm is rotatably connected to the second end of the first swing arm, allowing the second swing arm to swing horizontally around the second end of the first swing arm. The cable fixing part is connected to the second end of the second swing arm. The driving assembly is located between the fixed base and the turntable, and is used to drive the turntable to rotate relative to the fixed base.

[0007] According to the multi-antenna satellite outdoor testing device provided by this utility model, the fixed base is provided with a fixed part, the turntable is provided with a rotating part, the fixed part is sleeved on the rotating part, and the rotating part is rotatably engaged with the fixed part; it also includes: a rotary angle encoder, the rotary angle encoder includes a main body and a detection roller, the main body is provided on the fixed base, and the detection roller contacts the outer wall of the rotating part.

[0008] According to the multi-antenna satellite outdoor testing device provided by this utility model, the driving component includes a motor, a driving gear and a driven gear. The motor is located on the fixed base, the driving gear is located at the output end of the motor, and the driven gear is located circumferentially on the turntable. The driving gear meshes with the driven gear.

[0009] According to the multi-antenna satellite outdoor testing device provided by this utility model, the fixed base is provided with a plurality of support rollers spaced apart along the circumference, and the support rollers are in contact with the bottom of the turntable.

[0010] The multi-antenna satellite outdoor testing device provided by this utility model also includes: a limit switch and a limit switch trigger.

[0011] The limit switch is located on the fixed base and is communicatively connected to the drive assembly; the limit switch trigger is located on the turntable; in the initial state, the limit switch trigger is located downstream of the limit switch.

[0012] The multi-antenna satellite outdoor testing device provided by this utility model also includes: a proximity switch assembly and a proximity switch trigger.

[0013] The proximity switch assembly is disposed on the fixed base. Along the circumference of the fixed base, the proximity switch assembly includes a first proximity switch and a second proximity switch spaced apart. The proximity switch trigger is disposed on the turntable. Along the circumference of the turntable, the proximity switch trigger is provided with a first trigger part and a second trigger part spaced apart. In the initial state, the first trigger part is disposed opposite to the first proximity switch, and the second trigger part is located downstream of the second proximity switch.

[0014] According to the multi-antenna satellite outdoor testing device provided by this utility model, contact sensors are provided on both sides of the mounting base along the circumference of the turntable, and the contact sensors are communicatively connected to the drive assembly.

[0015] According to the multi-antenna satellite outdoor testing device provided by this utility model, the fixed base includes a central support, a base bracket and multiple fixed blocks, the center of the base bracket is connected to the central support, and the multiple fixed blocks are spaced apart on the base bracket along the circumference.

[0016] According to the multi-antenna satellite outdoor testing device provided by this utility model, the turntable includes a turntable support and a protective cover. The turntable support is rotatably mounted on the fixed base, and the protective cover is mounted on the turntable support.

[0017] The multi-antenna satellite outdoor testing device provided by this utility model further includes: a control cabinet, which is communicatively connected to the drive assembly.

[0018] This utility model provides a multi-antenna satellite outdoor testing device. By setting up a fixed base, a turntable, an anti-tangle bracket, and a drive assembly, multiple antennas can be simultaneously mounted on different mounting bases during testing, enabling synchronous testing of multiple antennas. The drive assembly can drive the turntable to rotate relative to the fixed base, achieving dynamic outdoor testing of multiple antennas. Furthermore, the cables of multiple antennas can be fixed through a cable fixing part and passed through a cable through-hole in the center of the turntable. The anti-tangle bracket, by setting up a first and second swing arm that can swing horizontally, can swing in the horizontal plane during the rotation of the turntable, preventing excessive cable tangling that could cause malfunctions in the testing device.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the multi-antenna satellite outdoor testing device provided in this embodiment of the utility model.

[0022] Figure 2 This is a schematic diagram of the repeater of the multi-antenna satellite outdoor testing device provided in this embodiment of the utility model.

[0023] Figure 3 This is a schematic diagram of the fixed base in the multi-antenna satellite outdoor testing device provided in this embodiment of the utility model.

[0024] Figure 4 This is a schematic diagram showing the positions of components such as limit switches and proximity switch assemblies in the initial state of the multi-antenna satellite outdoor testing device provided in this embodiment of the utility model.

[0025] Figure label: 100. Fixed base; 110. Fixing part; 120. Support roller; 130. Limit switch; 140. Proximity switch assembly; 141. First proximity switch; 142. Second proximity switch; 150. Center support; 160. Base bracket; 170. Fixed block; 200. Turntable; 210. Rotating part; 220. Limit switch trigger; 230. Proximity switch trigger; 231. First trigger part; 232. Second trigger part; 240. Turntable bracket; 250. Protective cover; 300. Anti-winding bracket; 310. Mounting column; 320. First swing arm; 330. Second swing arm; 340. Cable fixing part; 400. Drive assembly; 410. Motor; 420. Drive gear; 430. Driven gear tooth; 500. Mounting base; 600. Rotary angle encoder; 700. Control cabinet. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0029] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The following is combined with Figures 1 to 4 This invention describes the multi-antenna satellite outdoor testing device provided by this utility model.

[0032] See Figures 1 to 3 As shown in the figure, the multi-antenna satellite outdoor testing device provided in this embodiment of the present invention includes: a fixed base 100, a turntable 200, an anti-tangle bracket 300, and a drive assembly 400.

[0033] A turntable 200 is rotatably mounted on a fixed base 100. Multiple mounting seats 500 are spaced circumferentially on the turntable 200 for mounting the antenna under test. A cable through-hole for threading cables is located at the center of the turntable 200. An anti-tangle bracket 300 includes a mounting post 310, a first swing arm 320, a second swing arm 330, and a cable fixing part 340. The mounting post 310 is vertically mounted on the turntable 200. The first end of the first swing arm 320 is rotatably connected to the top end of the mounting post 310, allowing the first swing arm 320 to swing horizontally around the top end of the mounting post 310. The first end of the second swing arm 330 is rotatably connected to the second end of the first swing arm 320, allowing the second swing arm 330 to swing horizontally around the second end of the first swing arm 320. The cable fixing part 340 is connected to the second end of the second swing arm 330. A drive assembly 400 is located between the fixed base 100 and the turntable 200, used to drive the turntable 200 to rotate relative to the fixed base 100.

[0034] The multi-antenna satellite outdoor testing device provided by this utility model, by setting up a fixed base 100, a turntable 200, an anti-tangle bracket 300, and a drive assembly 400, allows multiple antennas to be simultaneously mounted on different mounting bases 500 during testing, achieving synchronous testing of multiple antennas. The drive assembly 400 can drive the turntable 200 to rotate relative to the fixed base 100, enabling dynamic outdoor testing of multiple antennas. Furthermore, the cables of multiple antennas can be fixed through the cable fixing part 340 and passed through the cable through-hole at the center of the turntable 200. The anti-tangle bracket 300, by setting up a first swing arm 320 and a second swing arm 330 that can swing horizontally, can swing in the horizontal plane during the rotation of the turntable 200, preventing excessive cable tangling that could cause malfunctions in the testing device.

[0035] Specifically, the fixed base 100 provides stable support for the entire testing apparatus and forms the basis of the turntable 200 and the drive assembly 400. The fixed base 100 supports the turntable 200, enabling it to rotate smoothly and ensuring stability and accuracy during the testing process.

[0036] The turntable 200 is used to install and adjust the angle of the antenna under test, thereby enabling dynamic testing of multiple antennas. Multiple mounting seats 500 are spaced circumferentially along the turntable 200 to mount multiple antennas, and the test angle of the antennas can be adjusted by rotating the turntable 200. A cable through-hole is located at the center of the turntable 200 to facilitate the guidance of cables to the testing equipment. The main function of the anti-tangle bracket 300 is to prevent the cables of multiple antennas under test from being pulled or tangled during rotation, ensuring smooth cable transmission. The anti-tangle bracket 300 includes a mounting post 310, a first swing arm 320, a second swing arm 330, and a cable fixing part 340. The mounting post 310 is used to fix the anti-tangle bracket 300 to the turntable 200. The first and second swing arms 320 and 330 are used to adaptively swing when the turntable 200 rotates to prevent excessive cable tangling that could cause test device malfunction. The cable fixing part 340 is used to limit and fix multiple cables, preventing cable slippage during turntable 200 rotation and affecting the stability of the testing device.

[0037] The drive assembly 400 is used to drive the turntable 200 to rotate relative to the fixed base 100, thereby enabling dynamic testing of each antenna under test located on the mounting base 500. The drive assembly 400 can be implemented in various ways in the prior art, for example, by driving a servo motor, stepper motor or other drive device, and transmitting power to the turntable 200 through a transmission mechanism such as gear transmission, chain transmission or belt transmission to drive the turntable 200 to rotate relative to the fixed base 100.

[0038] It should be noted that the number of mounting bases 500 on the turntable 200 is multiple, and the number can be set according to actual testing requirements, without any specific limitation. For example, the number and arrangement of mounting bases 500 can be flexibly adjusted according to the number of antennas under test, so that the turntable 200 can adapt to testing tasks of different scales and ensure the efficiency and accuracy of the testing process. Meanwhile, the shape and size of the fixed base 100 and the turntable 200 can be selected according to the actual specifications of the antennas under test, without any special limitations. The mounting bases 500 can be fixedly connected or detachably connected to the turntable 200. When a detachable connection is used, the mounting bases 500 can be disassembled and reassembled according to the number of antennas under test, thereby reducing the overall weight of the turntable 200 and reducing testing power consumption while meeting testing requirements.

[0039] As an example, in this embodiment, the overall outline of the fixed base 100 and the turntable 200 is circular. The turntable 200 is provided with four mounting seats 500 at intervals. The four mounting seats 500 are located at 0°, 45°, 180° and 315° on the upper surface of the turntable 200, respectively, so that four antennas under test can be fixed at the same time.

[0040] See Figures 1 to 3 As shown, according to some embodiments of the present invention, a fixed part 110 is provided on the fixed base 100, and a rotating part 210 is provided on the turntable 200. The fixed part 110 is sleeved on the rotating part 210, and the rotating part 210 and the fixed part 110 are rotatably engaged. It also includes a rotary angle encoder 600, which includes a main body and a detection roller. The main body is provided on the fixed base 100, and the detection roller contacts the outer wall of the rotating part 210.

[0041] By setting the rotational connection structure between the fixed base 100 and the turntable 200 to the structure of the fixed part 110 and the rotating part 210 described above, the structure is simplified and the manufacturing difficulty of the testing device is reduced while ensuring that the turntable 200 can rotate smoothly relative to the fixed base 100. At the same time, by setting the rotation angle encoder 600, the rotation angle information can be accurately obtained during the rotation of the turntable 200.

[0042] Specifically, the rotary angle encoder 600 includes a main body and a detection roller. The main body is located on the fixed base 100, and the detection roller contacts the outer wall of the rotating part 210. When the rotating part 210 rotates, it can drive the detection roller to rotate, thereby detecting the rotation angle of the turntable 200.

[0043] See Figures 1 to 3As shown, according to some embodiments of the present invention, the drive assembly 400 includes a motor 410, a drive gear 420 and a driven gear 430. The motor 410 is disposed on the fixed base 100, the drive gear 420 is disposed at the output end of the motor 410, and the driven gear 430 is disposed circumferentially on the turntable 200. The drive gear 420 meshes with the driven gear 430.

[0044] By configuring the drive assembly 400 to include a motor 410, a drive gear 420, and a driven gear 430, the output shaft of the motor 410 can drive the drive gear 420 to rotate, and the meshing action of the drive gear 420 and the driven gear 430 can drive the turntable 200 to rotate. This design is simple in structure and offers high transmission accuracy. The motor 410 is mounted on the fixed base 100, the drive gear 420 is installed at the output end of the motor 410, and the driven gear 430 is arranged circumferentially along the turntable 200, precisely meshing with the drive gear 420, ensuring smooth rotation and high transmission efficiency.

[0045] Preferably, a servo motor is selected for motor 410, which features high precision, high responsiveness, and high stability, making it suitable for the turntable 200 drive system requiring precise control. The servo motor, through a closed-loop control system, can provide real-time feedback on the position, speed, and torque of motor 410, ensuring the stability and accuracy of the turntable 200 during rotation. By precisely controlling the movement of the servo motor, efficient rotation of the turntable 200 at set angles and speeds can be achieved, thus meeting the requirements for high precision and high reliability in dynamic testing.

[0046] The driven gear 430 can be in the form of an arc-shaped rack, and is connected to the turntable 200 by means of thread fastening or welding, so as to transmit power to the turntable 200 through the drive gear 420.

[0047] See Figures 1 to 3 As shown, according to some embodiments of the present invention, the fixed base 100 is provided with a plurality of support rollers 120 spaced apart along the circumference, and the support rollers 120 are in contact with the bottom of the turntable 200.

[0048] By arranging multiple support rollers 120 circumferentially at intervals on the fixed base 100, and ensuring that the support rollers 120 contact the bottom of the turntable 200, the turntable 200 can be supported by the support rollers 120, reducing friction during rotation. This significantly reduces frictional resistance during rotation, decreases energy loss, and improves system efficiency and rotational smoothness. Furthermore, the spacing of the support rollers 120 ensures uniform support for the turntable 200 during rotation, preventing vibration or misalignment that could result from uneven force. Simultaneously, the contact between the support rollers 120 and the bottom of the turntable 200 effectively reduces wear and extends the equipment's service life.

[0049] See Figure 4 As shown, according to some embodiments of the present invention, it also includes: a limit switch 130 and a limit switch trigger 220.

[0050] Limit switch 130 is mounted on fixed base 100 and is communicatively connected to drive assembly 400; limit switch trigger 220 is mounted on turntable 200; in the initial state, limit switch trigger 220 is located downstream of limit switch 130.

[0051] By setting limit switch 130 and limit switch trigger 220, and initially positioning limit switch trigger 220 downstream of limit switch 130, when turntable 200 is in the forward direction (with... Figure 1 (Taking clockwise as an example) When the turntable rotates to a set angle (such as 350°), that is, before rotating to 359.9 degrees in the forward direction, the limit switch trigger 220 can trigger the limit switch 130, and the turntable 200 can reduce the rotation speed according to the preset parameters to prepare for the subsequent low-speed reverse rotation.

[0052] It should be noted that the above "initial state" specifically refers to the state of the testing device before testing. At this time, the turntable 200 is in a standby or starting position.

[0053] Limit switch 130 can communicate with drive assembly 400 through control components such as control cabinet 700. After receiving the trigger signal from limit switch trigger 220, limit switch 130 transmits the information to control cabinet 700, and control cabinet 700 then issues corresponding commands based on this information to adjust the output power or speed of motor 410.

[0054] See Figure 4 As shown, according to some embodiments of the present invention, it further includes: a proximity switch assembly 140 and a proximity switch trigger 230.

[0055] The proximity switch assembly 140 is disposed on the fixed base 100. Along the circumference of the fixed base 100, the proximity switch assembly 140 includes a first proximity switch 141 and a second proximity switch 142 that are spaced apart. The proximity switch trigger 230 is disposed on the turntable 200. Along the circumference of the turntable 200, the proximity switch trigger 230 has a first trigger part 231 and a second trigger part 232 spaced apart. In the initial state, the first trigger part 231 is disposed opposite to the first proximity switch 141, and the second trigger part 232 is located downstream of the second proximity switch 142.

[0056] By setting up a proximity switch assembly 140 and a proximity switch trigger 230, and in the initial state, setting the first trigger part 231 opposite to the first proximity switch 141, and the second trigger part 232 located downstream of the second proximity switch 142, the first trigger part 231 opposite to the first proximity switch 141 is used for controlling the starting angle. The trigger means that the turntable 200 system starts to rotate from 0°. The second trigger part 232 located downstream of the second proximity switch 142 is used for controlling the maximum forward rotation angle (359.9°) of the turntable 200. The trigger means that the turntable 200 system reaches the limit position of 359.9°, and the turntable 200 starts to reverse.

[0057] According to some embodiments of the present invention, contact sensors (not shown in the figure) are provided on both sides of the mounting base 500 along the circumference of the turntable 200, and the contact sensors are communicatively connected to the drive assembly 400.

[0058] By installing contact sensors on both sides of the mounting base 500 and communicating with the drive assembly 400, the two sides of the mounting base 500 can be detected using the contact sensors. For example, when a tester is located on the side of the mounting base 500, the drive assembly 400 can be used to control the turntable 200 to stop rotating, thus avoiding injury to the tester.

[0059] Similarly, the contact sensor can also communicate with the drive assembly 400 through control components such as the control cabinet 700. After receiving a trigger signal, the contact sensor transmits the information to the control cabinet 700, which then issues corresponding commands based on this information to adjust the output power or speed of the motor 410.

[0060] See Figures 1 to 3 As shown, according to some embodiments of the present invention, the fixed base 100 includes a central support 150, a base bracket 160 and a plurality of fixed blocks 170. The center of the base bracket is connected to the central support 150, and the plurality of fixed blocks 170 are spaced apart on the base bracket 160 in the circumferential direction.

[0061] By setting the fixed base 100 to a structure including a central support 150, a base bracket 160 and multiple fixed piers 170, it is easy to install outdoors while ensuring its support performance. Its structure is simple and easy to install.

[0062] Specifically, multiple fixed piers 170 are arranged in a circle, with a central support 150 located at the center of the multiple fixed piers 170, the center of the base support 160 connected to the central support 150, and the outer periphery of the base support 160 connected to the multiple fixed piers 170.

[0063] See Figures 1 to 3As shown, according to some embodiments of the present invention, the turntable 200 includes a turntable support 240 and a protective cover 250. The turntable support 240 is rotatably mounted on the fixed base 100, and the protective cover 250 is mounted on the turntable support 240.

[0064] By setting the turntable 200 to include a turntable support 240 and a protective cover 250, it is possible to ensure that it can rotate relative to the fixed base 100 while using the protective cover 250 to protect the turntable support 240, the fixed base 100 located below the protective cover 250, the drive assembly 400, and various sensors, thereby preventing rainwater and other factors from damaging the aforementioned key components.

[0065] Specifically, the turntable support 240 is made of multiple profiles welded into a set shape (such as a disc shape), and the protective cover 250 is made of metal plates that are welded or riveted to cover the upper surface and outer periphery of the turntable support 240, thereby playing a protective role.

[0066] See Figure 1 As shown, according to some embodiments of the present invention, it further includes: a control cabinet 700, which is communicatively connected to the drive assembly 400.

[0067] By setting up control cabinet 700, centralized control and management of drive component 400 can be achieved. As the control center of the equipment, control cabinet 700, through communication connection with drive component 400, can adjust the working status of drive component 400 in real time according to needs (such as sensing signals from various sensors), ensuring the coordinated and efficient operation of the entire testing device.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-antenna satellite outdoor testing device, characterized in that, include: Fixed base; A turntable is rotatably mounted on the fixed base. Multiple mounting seats are spaced apart along the circumferential edge of the turntable. The mounting seats are used to mount the antenna under test. A cable through hole for passing cables through is provided at the center of the turntable. An anti-tangle bracket includes a mounting column, a first swing arm, a second swing arm, and a cable fixing part. The mounting column is vertically mounted on the turntable. The first end of the first swing arm is rotatably connected to the top end of the mounting column so that the first swing arm can swing horizontally around the top end of the mounting column. The first end of the second swing arm is rotatably connected to the second end of the first swing arm so that the second swing arm can swing horizontally around the second end of the first swing arm. The cable fixing part is connected to the second end of the second swing arm. A drive assembly is disposed between the fixed base and the turntable, and is used to drive the turntable to rotate relative to the fixed base.

2. The multi-antenna satellite outdoor testing device according to claim 1, characterized in that, The fixed base is provided with a fixed part, the turntable is provided with a rotating part, the fixed part is sleeved on the rotating part, and the rotating part and the fixed part are rotatably engaged; It also includes a rotary angle encoder, which includes a main body and a detection roller. The main body is disposed on the fixed base, and the detection roller is in contact with the outer wall of the rotating part.

3. The multi-antenna satellite outdoor testing device according to claim 1, characterized in that, The drive assembly includes a motor, a drive gear, and a driven gear. The motor is mounted on the fixed base, the drive gear is located at the output end of the motor, and the driven gear is circumferentially mounted on the turntable. The drive gear meshes with the driven gear.

4. The multi-antenna satellite outdoor testing device according to claim 1, characterized in that, The fixed base is provided with a plurality of support rollers spaced apart along the circumference, and the support rollers are in contact with the bottom of the turntable.

5. The multi-antenna satellite outdoor testing device according to claim 1, characterized in that, Also includes: A limit switch is provided on the fixed base and is communicatively connected to the drive assembly; A limit switch trigger, wherein the limit switch trigger is located on the turntable; In the initial state, the limit switch trigger is located downstream of the limit switch.

6. The multi-antenna satellite outdoor testing device according to any one of claims 1 to 5, characterized in that, Also includes: A proximity switch assembly is disposed on the fixed base. Along the circumference of the fixed base, the proximity switch assembly includes a first proximity switch and a second proximity switch that are spaced apart. A proximity switch trigger is provided on the turntable, and along the circumference of the turntable, the proximity switch trigger is provided with a first trigger part and a second trigger part at intervals; In the initial state, the first triggering part is positioned opposite to the first proximity switch, and the second triggering part is located downstream of the second proximity switch.

7. The multi-antenna satellite outdoor testing device according to any one of claims 1 to 5, characterized in that, Along the circumference of the turntable, contact sensors are provided on both sides of the mounting base, and the contact sensors are communicatively connected to the drive assembly.

8. The multi-antenna satellite outdoor testing device according to any one of claims 1 to 5, characterized in that, The fixed base includes a central support, a base bracket, and multiple fixed piers. The center of the base bracket is connected to the central support, and the multiple fixed piers are spaced apart on the base bracket along the circumference.

9. The multi-antenna satellite outdoor testing device according to any one of claims 1 to 5, characterized in that, The turntable includes a turntable support and a protective cover. The turntable support is rotatably mounted on the fixed base, and the protective cover is mounted on the turntable support.

10. The multi-antenna satellite outdoor testing device according to any one of claims 1 to 5, characterized in that, Also includes: A control cabinet, which is communicatively connected to the drive assembly.

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