A multi-path communication antenna test tool support

Abstract

The utility model discloses a kind of multi-path communication antenna test tool support, belong to antenna test technical field, its technical key points include base and through bolt fixed connection in the bracket cylinder of the base top surface, the inside of the bracket cylinder is evenly provided with several positioning grooves, the inside of each positioning groove is slidably connected with connecting block, the utility model is driven by driving mechanism multiple belt synchronous operation, make connecting block slide along positioning groove, realize multiple antenna lifting test, by adopting the driving mechanism of electric push rod and eight prismatic block combination, single driving wheel can be selectively driven, each antenna height is independently controlled, satisfy the complex demand of multiple antenna different height synchronous test, cooperate with the quick locking mechanism of electromagnetic lock and gear teeth, ensure that height is adjusted after stable and does not displace, through the design of limiting mechanism by screw rod driving bidirectional clamping plate, adapt to different diameter antenna in certain size range, fixed plate and adjustable clamping plate form bidirectional positioning, avoid antenna shaking.

Description

Technical Field

[0001] This utility model belongs to the field of antenna testing technology, specifically relating to a multi-channel communication antenna testing fixture bracket. Background Technology

[0002] With the rapid development of wireless communication technology, especially the widespread application of 5G, 5G-Advanced, 6G, massive MIMO, millimeter-wave communication, and satellite communication, multi-channel communication antenna systems (such as multi-port antennas, array antennas, and MIMO antenna systems) have become core components of modern communication equipment. These antenna systems typically have multiple independent radiating elements or channels, enabling simultaneous transmission and reception of multiple signals, greatly improving the capacity, speed, and reliability of communication systems. To ensure that the performance indicators of multi-channel communication antennas (such as port isolation, radiation pattern, gain, efficiency, polarization characteristics, phase consistency, and mutual coupling effects) meet design requirements and guarantee their operational stability in complex electromagnetic environments, accurate, efficient, and reliable testing is crucial.

[0003] A search revealed a Chinese patent with publication number CN213782236U, which discloses a 5G communication antenna test frame, including a vertical tube and a housing. The right side of the vertical tube has a square hole, and a first motor is fixedly connected to the bottom of the left side of the vertical tube. The right end of the first motor shaft passes through the inner cavity of the vertical tube and is fixedly connected to a winding roller. However, the existing test frame is not suitable for testing multiple antennas at the same time, and it is impossible to know whether there will be signal competition among multiple antennas. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-channel communication antenna test fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel communication antenna test fixture bracket, comprising a base and a bracket cylinder fixedly connected to the top surface of the base by bolts. The bracket cylinder has several uniformly spaced positioning slots inside, and a connecting block is slidably connected inside each positioning slot. Each connecting block has a limiting mechanism for fixing the antenna on its surface. The bracket cylinder has several driving wheels uniformly arranged along its axis inside, and a driving mechanism for driving belts is provided on the surface of the bracket cylinder. The bracket cylinder also has several driven wheels uniformly arranged along its axis inside, and several belts are arranged inside the bracket cylinder. Each belt is sleeved on the surface of its corresponding driven wheel and driving wheel. A positioning cylinder is fixedly connected to the surface of each belt, and each positioning cylinder is fixedly connected to its corresponding connecting block.

[0006] Preferably, the driving wheel and the driven wheel are respectively disposed at the upper and lower ends of the support cylinder, with the driving wheel at the bottom end of the support cylinder.

[0007] Preferably, each driven wheel has teeth fixedly connected to its surface, and the top of the support cylinder is uniformly fixedly connected with a plurality of electromagnetic locks by bolts, each electromagnetic lock corresponding to one of the teeth.

[0008] Preferably, the drive mechanism includes a motor fixedly connected to the surface of the base via a bracket, an octagonal prism fixedly connected to the output shaft of the motor, a limiting cylinder provided inside the bracket cylinder, the octagonal prism penetrating the surface of the bracket cylinder and inserted inside the limiting cylinder, an octagonal block fixedly connected to the surface of the limiting cylinder, and a positioning hole provided inside each of the drive wheels, the octagonal block being slidably connected to the drive wheel through the positioning hole.

[0009] Preferably, an electric push rod is fixedly connected to the top surface of the base via a bracket. The electric push rod is located on the side of the bracket cylinder away from the motor, and the push rod of the electric push rod is rotatably connected to the limiting cylinder.

[0010] Preferably, the opening edge of each positioning hole is rounded, and both ends of the octagonal block are rounded.

[0011] Preferably, the limiting mechanism includes a connecting plate fixedly connected to the surface of the connecting block by bolts. Two guide rails are symmetrically mounted on the surface of the connecting plate. A positioning plate is slidably connected to the surface of each guide rail by a slider. A lead screw is rotatably connected to the inside of the positioning plate by a bearing seat. Two clamping plates are symmetrically threaded to the surface of the lead screw.

[0012] Preferably, each of the connecting plates has two fixing plates symmetrically fixedly connected to its bottom surface.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a drive mechanism to drive multiple belts to operate synchronously, causing the connecting block to slide along the positioning groove, thereby realizing the lifting and lowering test of multiple antennas. It is especially suitable for batch antenna performance comparison test scenarios.

[0015] 2. This utility model adopts a drive mechanism combining an electric push rod and an octagonal block, which can selectively drive a single drive wheel and independently control the height of each antenna, meeting the complex requirements of synchronous testing of multiple antennas at different heights. Combined with the rapid locking mechanism of electromagnetic lock and teeth, it ensures stability and no displacement after height adjustment.

[0016] 3. This utility model uses a limiting mechanism with a lead screw to drive a bidirectional clamping plate design, which can adapt to antennas of different diameters within a certain size range. The fixed plate and the adjustable clamping plate form a bidirectional positioning, which avoids antenna shaking, is compatible with testing multiple antenna models, and reduces tooling replacement costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the belt and driven pulley structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the vertical cross-sectional structure of the drive wheel of this utility model;

[0020] Figure 4 This is a schematic diagram of the clamping plate and lead screw structure of this utility model.

[0021] In the diagram: 1. Base; 2. Support cylinder; 3. Motor; 4. Positioning groove; 5. Fixing plate; 6. Connecting block; 7. Drive wheel; 8. Belt; 9. Driven wheel; 10. Electromagnetic lock; 11. Gear; 12. Octagonal prism; 13. Octagonal block; 14. Electric push rod; 15. Limiting cylinder; 16. Connecting plate; 17. Guide rail; 18. Positioning plate; 19. Clamping plate; 20. Lead screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4This utility model provides a multi-channel communication antenna test fixture bracket, including a base 1 and a bracket cylinder 2 fixedly connected to the top surface of the base 1 by bolts. The bracket cylinder 2 has several evenly spaced positioning grooves 4, each with a connecting block 6 slidably connected inside. Each connecting block 6 has a limiting mechanism for fixing the antenna on its surface. The bracket cylinder 2 has several evenly spaced drive wheels 7 along its axis inside. A drive mechanism with a drive belt 8 is provided on the surface of the bracket cylinder 2. The bracket cylinder 2 also has evenly spaced driven wheels 9 along its axis inside. The bracket cylinder 2 has several belts 8 inside, each belt 8 being fitted with... On the surfaces of the corresponding driven wheel 9 and driving wheel 7, a positioning cylinder is fixedly connected to the surface of each belt 8, and each positioning cylinder is fixedly connected to the corresponding connecting block 6. The driving wheel 7 and the driven wheel 9 are respectively set at the upper and lower ends of the support cylinder 2, with the driving wheel 7 at the bottom end of the support cylinder 2. When multiple antennas need to be tested simultaneously, the antennas are fixed by the limiting mechanism, and then the drive mechanism is started to make the driving wheel 7 rotate. Through friction, the belt 8 and the driven wheel 9 rotate. When the belt 8 rotates, it will drive the connecting block 6 to slide inside the positioning groove 4, so that multiple antennas can be tested simultaneously.

[0024] In this embodiment, each driven wheel 9 has teeth 11 fixedly connected to its surface. The top of the support cylinder 2 is evenly fixedly connected with several electromagnetic locks 10 by bolts. Each electromagnetic lock 10 corresponds to a tooth 11. When the connecting block 6 moves to a suitable position, the electromagnetic lock 10 is connected to an external power source and then activated. The pin of the electromagnetic lock 10 moves toward the driven wheel 9 until it meshes with the teeth 11, thereby locking the driven wheel 9 and preventing the connecting block 6 from falling down on its own.

[0025] In this embodiment, the driving mechanism includes a motor 3 fixedly connected to the surface of the base 1 via a bracket. An octagonal prism 12 is fixedly connected to the output shaft of the motor 3. A limiting cylinder 15 is provided inside the bracket cylinder 2. The octagonal prism 12 penetrates the surface of the bracket cylinder 2 and is inserted into the limiting cylinder 15. An octagonal block 13 is fixedly connected to the surface of the limiting cylinder 15. A positioning hole is provided inside each drive wheel 7. The octagonal block 13 is slidably connected to the drive wheel 7 through the positioning hole. An electric push rod 14 is fixedly connected to the top surface of the base 1 via a bracket. The electric push rod 14 is located on the side of the bracket cylinder 2 away from the motor 3. The push rod of rod 14 is rotatably connected to the limiting cylinder 15. The opening edge of each positioning hole is rounded, and both ends of the octagonal block 13 are also rounded. When it is necessary to test each antenna at a different height, the electric push rod 14 is connected to an external power source and started. The limiting cylinder 15 will drive the octagonal block 13 to move until the octagonal block 13 is inserted into the interior of one of the positioning holes. Then the motor 3 is connected to an external power source and started. The octagonal prism 12 will drive the octagonal block 13 to rotate through the limiting cylinder 15, so that a single drive wheel 7 can be rotated, thereby adjusting the height of multiple antennas at different heights.

[0026] It should be noted that motor 3 is a servo motor with an encoder, and the number of rotations and rotation angle of the motor output shaft are controllable and highly accurate. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0027] It should be noted that the electric push rod 14 can be used with a magnetic switch, proximity switch or photoelectric switch to achieve precise control of the push rod's extension and retraction displacement. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0028] In this embodiment, the limiting mechanism includes a connecting plate 16 fixedly connected to the surface of the connecting block 6 by bolts. Two guide rails 17 are symmetrically installed on the surface of the connecting plate 16. A positioning plate 18 is slidably connected to the surface of each guide rail 17 by a slider. A lead screw 20 is rotatably connected to the inside of the positioning plate 18 by a bearing seat. Two clamping plates 19 are symmetrically threaded to the surface of the lead screw 20. Two fixing plates 5 are symmetrically fixed to the bottom surface of each connecting plate 16. When it is necessary to position antennas of different sizes within a certain range, the antenna is placed on the surface of the fixing plate 5 to position the bottom end of the antenna. Then, the lead screw 20 is rotated to make the two clamping plates 19 move closer to the center to clamp the antenna, thus realizing the positioning of antennas of different sizes within a certain range.

[0029] It should be noted that: In this application, an annular groove is provided axially on the inner wall of the threaded cylinder, and a nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the surface of the threaded rod at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68 (tested according to ASTM D1894 standard), effectively suppressing loosening displacement caused by thread springback.

[0030] The use of this utility model involves the following steps:

[0031] S1: When multiple antennas need to be tested simultaneously, the antennas are fixed by the limiting mechanism, and then the drive mechanism is started to make the driving wheel 7 rotate. The friction force drives the belt 8 and the driven wheel 9 to rotate. When the belt 8 rotates, it will drive the connecting block 6 to slide inside the positioning groove 4, so that multiple antennas can be tested at the same time.

[0032] S2: When the connecting block 6 moves to the appropriate position, the electromagnetic lock 10 is connected to the external power supply and then started. The pin of the electromagnetic lock 10 will move towards the driven wheel 9 until it meshes with the teeth 11, thereby locking the driven wheel 9 and preventing the connecting block 6 from falling down on its own.

[0033] S3: When it is necessary to test each antenna at a different height, connect the electric push rod 14 to the external power supply and start it. The limiting cylinder 15 will drive the octagonal block 13 to move until the octagonal block 13 is inserted into one of the positioning holes. Then connect the motor 3 to the external power supply and start it. The octagonal prism 12 will drive the octagonal block 13 to rotate through the limiting cylinder 15. This will apply force to rotate a single drive wheel 7, thereby adjusting the height of multiple antennas at different heights.

[0034] S4: Each connecting plate 16 has two fixed plates 5 symmetrically fixed to its bottom surface. When it is necessary to position antennas of different sizes within a certain range, place the antenna on the surface of the fixed plate 5 to position the bottom of the antenna, and then rotate the screw 20 to move the two clamping plates 19 toward the center to clamp the antenna, thus achieving the positioning of antennas of different sizes within a certain range.

[0035] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-channel communication antenna test fixture bracket, comprising a base (1) and a support cylinder (2) fixedly connected to the top surface of the base (1) by bolts, characterized in that: The support tube (2) has several positioning slots (4) evenly distributed inside. Each positioning slot (4) is slidably connected to a connecting block (6). Each connecting block (6) has a limiting mechanism for fixing the antenna on its surface. The support tube (2) has several driving wheels (7) evenly distributed along its axis inside. The support tube (2) has a driving mechanism for a driving belt (8) on its surface. The support tube (2) has driven wheels (9) evenly distributed along its axis inside. The support tube (2) has several belts (8) inside. Each belt (8) is sleeved on the surface of its corresponding driven wheel (9) and driving wheel (7). Each belt (8) has a positioning tube fixedly connected to its surface. Each positioning tube is fixedly connected to the corresponding connecting block (6).

2. The multi-channel communication antenna test fixture according to claim 1, characterized in that: The driving wheel (7) and the driven wheel (9) are respectively disposed at the upper and lower ends of the support cylinder (2), with the driving wheel (7) at the bottom end of the support cylinder (2).

3. The multi-channel communication antenna test fixture according to claim 1, characterized in that: Each driven wheel (9) has teeth (11) fixedly connected to its surface. The top of the support cylinder (2) is evenly fixedly connected with several electromagnetic locks (10) by bolts. Each electromagnetic lock (10) corresponds to the teeth (11).

4. The multi-channel communication antenna test fixture according to claim 1, characterized in that: The drive mechanism includes a motor (3) fixedly connected to the surface of the base (1) via a bracket. An octagonal prism (12) is fixedly connected to the output shaft of the motor (3). A limiting cylinder (15) is provided inside the bracket cylinder (2). The octagonal prism (12) penetrates the surface of the bracket cylinder (2) and is inserted into the limiting cylinder (15). An octagonal block (13) is fixedly connected to the surface of the limiting cylinder (15). A positioning hole is provided inside each of the drive wheels (7). The octagonal block (13) is slidably connected to the drive wheel (7) through the positioning hole.

5. The multi-channel communication antenna test fixture according to claim 4, characterized in that: An electric push rod (14) is fixedly connected to the top surface of the base (1) by a bracket. The electric push rod (14) is located on the side of the bracket cylinder (2) away from the motor (3). The push rod of the electric push rod (14) is rotatably connected to the limiting cylinder (15).

6. The multi-channel communication antenna test fixture according to claim 4, characterized in that: Each of the positioning holes has a rounded edge at the opening edge, and both ends of the octagonal block (13) have rounded corners.

7. The multi-channel communication antenna test fixture according to claim 1, characterized in that: The limiting mechanism includes a connecting plate (16) fixedly connected to the surface of the connecting block (6) by bolts. Two guide rails (17) are symmetrically installed on the surface of the connecting plate (16). A positioning plate (18) is slidably connected to the surface of each guide rail (17) by a slider. A lead screw (20) is rotatably connected to the inside of the positioning plate (18) by a bearing seat. Two clamping plates (19) are symmetrically threaded on the surface of the lead screw (20).

8. The multi-channel communication antenna test fixture according to claim 7, characterized in that: Each of the connecting plates (16) has two fixing plates (5) symmetrically fixedly connected to its bottom surface.

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