Electromagnetic compatibility (EMC) load test antenna frame of antenna tower case

Abstract

The utility model provides an antenna tower chassis EMC load test antenna frame, which comprises a bottom plate, a vertical rod is arranged at the upper part of the bottom plate, and a balancing weight for fixing two ends of a synchronous belt is arranged on a sliding installation adjusting assembly on the vertical rod. A counterweight block of an adjusting assembly slidably installed on a vertical rod is matched with a synchronous belt to drive a counterweight of an antenna tower test frame to move up and down, the scene of actual use of a tested case is simulated, the adjusting assembly can repeatedly move up and down in the stroke, and the EMC of the antenna tower case can be repeatedly tested; the weight of the balancing weight on the test board of the adjusting assembly can be increased or decreased according to requirements, the antenna tower test load is simulated, the applied force can simulate the scene in actual use, the force applied by the balancing weight is relatively stable and easy to grasp, the labor cost of the test is reduced, and meanwhile the potential safety hazard that the load is manually applied to the antenna tower is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of power testing equipment, specifically relating to an antenna tower chassis EMC load test antenna frame. Background Technology

[0002] Electromagnetic compatibility (EMC) testing is an important test to ensure that electronic equipment can operate normally in an electromagnetic environment without interfering with other equipment. The main purpose of EMC testing is to verify the compatibility of equipment in an electromagnetic environment, including its ability to transmit and receive electromagnetic interference. For antenna tower enclosures, it is necessary to ensure that they do not interfere with other equipment under normal operating conditions, and at the same time, they must be able to resist electromagnetic interference from other equipment.

[0003] Existing technology tests the EMC performance of antenna tower enclosures in an anechoic chamber by simulating their working state by supplying power to the enclosure and then performing EMC tests. However, without load and without simulating their actual working state, the test results are difficult to reflect their true EMC characteristics. Therefore, they may exceed the noise floor requirements in RE tests or cause unpredictable failures in RS tests. Utility Model Content

[0004] The purpose of this utility model is to provide an antenna frame for EMC load testing of antenna tower enclosures, so as to overcome the technical problem that existing devices cannot truly simulate the EMC test of antenna tower enclosures and the test results are difficult to reflect their true EMC characteristics.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An antenna frame for EMC load testing of an antenna tower chassis includes a vertical rod, on which an adjustment assembly is slidably mounted. The adjustment assembly includes a clamping block, on which both ends of a synchronous belt are connected. A synchronous pulley is provided on the upper part of the vertical rod, the upper part of the synchronous belt is mounted on the synchronous pulley, and the lower part of the synchronous belt is mounted on the pulley of the chassis under test.

[0007] A base plate is provided below the vertical rod, and a clamping assembly for fixing the chassis under test is installed on the base plate.

[0008] Furthermore, a first fixing plate is installed on the base plate, the lower end of the vertical rod is connected to the first fixing plate, and the upper end of the vertical rod is connected to a horizontal rod. Both the vertical rod and the horizontal rod are fixed on the second fixing plate.

[0009] Furthermore, a third mounting plate is fixedly connected to the bottom of the crossbar, and a synchronous pulley is rotatably connected inside the third mounting plate.

[0010] Furthermore, the adjustment assembly includes multiple test plates, with a clamping block mounted on one of the test plates.

[0011] Furthermore, each of the multiple test plates is equipped with a counterweight, and rollers are rotatably connected to the inner side of the test plates.

[0012] Furthermore, a tensioning assembly is provided at the lower part of the vertical rod.

[0013] Furthermore, the tensioning assembly includes a first mounting plate, a plurality of second mounting plates are fixedly connected to one side of the first mounting plate, and a tensioning wheel is rotatably connected to one side of the second mounting plate.

[0014] Furthermore, the clamping assembly includes a baffle, with fixing bolts rotatably connected to both ends of the baffle, and the bottom end of the fixing bolts penetrating through the base plate.

[0015] Furthermore, a fixing plate is provided at the position where the fixing bolt penetrates the base plate.

[0016] Furthermore, the bottom of the base plate is equipped with casters.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] This utility model provides an antenna frame for EMC load testing of an antenna tower chassis, including a base plate and a vertical rod on the upper part of the base plate. A counterweight block for fixing both ends of a synchronous belt is slidably mounted on the vertical rod and an adjustment component. After the chassis under test is fixed by the clamping component, the counterweight block of the adjustment component slidably mounted on the vertical rod, in conjunction with the synchronous belt, drives the counterweight of the antenna tower test frame to move up and down, simulating the actual use scenario of the chassis under test. The adjustment component can move up and down repeatedly within its stroke, allowing for repeated testing of the EMC of the antenna tower chassis.

[0019] The weight of the counterweight on the adjustable component test board can be increased or decreased as needed to simulate the test load of the antenna tower. This allows the applied force to simulate the actual usage scenario, and the force applied by the counterweight is relatively stable and easy to control, reducing the manual cost of testing and avoiding the safety hazards of manually applying load to the antenna tower.

[0020] Preferably, a synchronous pulley is installed on the third mounting plate on the lower side of the crossbar to ensure the safe operation of the synchronous belt.

[0021] Preferably, a tensioning component is provided at the lower part of the vertical rod, which can provide appropriate tension to the synchronous belt so that the synchronous belt is in a tensioned state.

[0022] Preferably, casters are installed on the lower surface of the base plate, which improves the convenience of the device.

[0023] Preferably, the clamping assembly secures the chassis under test with long bolts and baffles, making it universally applicable to different models of chassis under test. Attached Figure Description

[0024] Figure 1 This is a structural diagram of an antenna frame for EMC load testing of an antenna tower chassis according to an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the base structure in an embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the adjustment component in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the tensioning component in this utility model;

[0028] Figure 5 This is a schematic diagram of the chassis structure in this utility model.

[0029] In the diagram, 1. Base plate; 101. Caster wheel; 2. First fixed plate; 3. Vertical rod; 4. Adjustment assembly; 401. First counterweight; 402. Roller; 403. First clamping block; 404. First test plate; 405. Second counterweight; 406. Second test plate; 407. Second clamping block; 5. Second fixed plate; 6. Tensioning assembly; 601. First mounting plate; 602. Second mounting plate; 603. Tensioning wheel; 7. Test chassis; 701. Pulley; 8. Clamping assembly; 801. Fixing bolt; 802. Fixing plate; 803. Baffle; 9. Synchronous belt; 10. Third mounting plate; 11. Synchronous pulley; 12. Crossbar. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0031] In one embodiment of this utility model, an antenna tower chassis EMC load test antenna frame is provided, such as... Figure 1As shown, the device includes an adjustment assembly 4, on which clamping blocks for fixing both ends of a timing belt 9 are mounted. The timing belt 9 is placed vertically. A timing pulley 11 is provided at the upper part of the timing belt 9, and the lower part is connected to the pulley 701 extending from the test box 7. The rotation of the pulley 701 drives the timing belt 9 to rotate, further applying force to the adjustment assembly to simulate the real environment of the antenna tower chassis EMC load test. The adjustment assembly 4 is slidably mounted on the vertical rod 3, and a base 1 is provided at the lower part of the vertical rod 3. A clamping assembly 8 for fixing the test box 7 is provided on the base 1.

[0032] Specifically, such as Figure 2 As shown, the lower part of the vertical rod 3 is fixed on the first fixing plate 2, and the first fixing plate 2 is installed on the base plate 1. Furthermore, there are two vertical rods 3 and two first fixing blocks 2. The two first fixing plates 2 are respectively installed on the two sides of the base plate 1 and are both perpendicular to the base plate 1.

[0033] The upper part of the vertical rod 3 is fixed to the second fixed plate 5. A horizontal rod 12 is also installed on the second fixed plate 5. The horizontal rod 12 is perpendicular to the vertical rod 3 and the horizontal rod adopts a hollow structure to reduce weight. The synchronous pulley is fixed on the side of the horizontal rod 12 opposite to the bottom plate 1. Similarly, there are two of the second fixed plate 5 and the synchronous pulley 11.

[0034] A tensioning assembly 6 is also installed on the first fixed plate 2. The tensioning assembly 6 is a square hollow structure. The vertical rod 3 passes through the tensioning assembly 6 and is fixed on the first fixed plate 2. At the same time, a tensioning wheel 603 is installed inside the tensioning assembly 6, which provides tension for the two synchronous belts 9.

[0035] In one embodiment of this utility model, the adjusting component 4 is also a square hollow structure composed of multiple test plates. A counterweight is installed on the test plate. A roller 402 is provided inside the adjusting component 4. The end of the roller 402 is fixed on the test plate. The vertical rod 3 is arranged between the two rollers 402 inside the tensioning component 4.

[0036] In another embodiment of this utility model, the clamping assembly 8 includes a fixing bolt 801, a fixing plate 802, and a baffle 803. The fixing bolt 801 is a long bolt that passes through the end of the baffle 802, the base plate 1, and the fixing plate 802. The fixing plate 802 is located at the bottom of the base plate 1 and serves to protect the base plate 1. The height of the baffle 802 is adjustable and can limit the movement of different models of test boxes 7.

[0037] As an optional option, casters 101 are also installed at the bottom of the base plate 1.

[0038] In another embodiment of this utility model, an antenna tower chassis EMC load test antenna frame is provided, comprising:

[0039] Adjustment component 4 is slidably connected to the surface of vertical rod 3 to fix synchronous belt 9 and apply test load to chassis 7 under test;

[0040] Tensioning assembly 6 is fixedly connected to the lower end surface of vertical rod 3 to provide appropriate tension to synchronous belt 9;

[0041] Clamping assembly 8 is disposed on the upper surface of the base plate 1 and is used to clamp and fix the chassis 7 to be tested;

[0042] Among them, such as Figure 3 As shown, the adjustment component 4 includes a first test plate 404 and a second test plate 406. Several first test plates 404 and several second test plates 406 are provided. A first counterweight 401 is detachably installed on one side of one of the second test plates 406 through several mounting holes and bolts. A second counterweight 405 is detachably installed on one side of one of the first test plates 404. A first clamping block 403 is detachably installed on the upper end of one side of one of the first test plates 404, and a second clamping block 407 is detachably installed on the lower end. Two rollers 402 are symmetrically arranged between the two first test plates 404. The rollers 402 are rotatably connected to the inner side of the first test plate 404.

[0043] like Figure 4 As shown, the tensioning assembly 6 includes a first mounting plate 601. A plurality of second mounting plates 602 are fixedly connected to one side of the first mounting plate 601. A tensioning wheel 603 is provided on one side of the second mounting plate 602. The tensioning wheel 603 is rotatably connected to one side of the first mounting plate 601. One side of the tensioning wheel 603 is in contact with the timing belt 9.

[0044] like Figure 1As shown, the clamping assembly 8 includes a baffle 803, which is disposed on the upper surface of the test chamber 7. Both ends of the baffle 803 are rotatably connected to fixing bolts 801. The bottom end of the fixing bolts 801 penetrates the base plate 1 and is connected to the fixing plate 802 via a nut. A horizontal bar 12 is fixedly connected to the top of the vertical bar 3 via a second fixing plate 5. The horizontal bar 12 has a hollow structure, and a third mounting plate 10 is fixedly connected to the bottom of the horizontal bar 12. A synchronous pulley 11 is rotatably connected inside the third mounting plate 10. A synchronous belt 9 is symmetrically arranged below the horizontal bar 12. One end of the synchronous belt 9 is disposed inside the first clamping block 403, and the other end is disposed inside the second clamping block 407. Two motors are symmetrically arranged inside the test chamber 7. Each motor's output end is fixedly connected to a pulley 701. The surface of the pulley 701 is fitted with the synchronous belt 9. The side of the synchronous belt 9 away from the pulley 701 is fitted onto the surface of the synchronous pulley 11, and the synchronous belt 9 and the synchronous pulley 11 are matched. A number of first fixing plates 2 are provided on one end of the upper surface of the base plate 1. The base plate 1 is detachably connected to a vertical rod 3 through the first fixing plates 2. A number of universal wheels 101 are provided on the bottom of the base plate 1.

[0045] Specifically, the fixing bolt 801 in the clamping assembly 8 can work with the nut and fixing plate 802 to fix the baffle 803 to the upper surface of the chassis 7 under test, thus clamping the chassis 7 under test. The fixing bolt 801 is relatively long, and together with the rectangular baffle 803, it can make the antenna frame compatible with various antenna tower chassis, and can firmly fix the chassis 7 under test to the upper surface of the base plate 1. The length of the synchronous belt 9 can also be adjusted according to the size of the chassis 7 under test. Together with the tensioning wheel 603, it provides appropriate tension to the synchronous belt 9, so that the antenna frame can adapt to different types of antenna tower chassis, and can simulate the actual use scenario of the antenna tower chassis.

[0046] The adjustment component 4 can work with the synchronous belt 9 and the motor in the test chassis 7 to move up and down repeatedly along the direction of the vertical rod 3 within a certain stroke. This allows for repeated testing of the antenna tower chassis's EMC. Through the mounting holes reserved on one side of the first test plate 404 and the second test plate 406, the tester can increase or decrease the weight of the first counterweight 401 and the second counterweight 405 as needed. The force applied to the test chassis 7 by the first counterweight 401 and the second counterweight 405 via the synchronous belt 9 is relatively stable and easy to control. This can simulate the actual usage scenario of the test chassis 7, reduce testing labor costs, and avoid safety hazards when manually applying loads.

[0047] Working principle and implementation method: The tester can move the antenna frame to a suitable position using the casters 101, and then use the fixing bolts 801 and fixing plates 802 in the clamping assembly 8 to fix the baffle 803 to the upper surface of the chassis 7 under test. Then, one end of the synchronous belt 9 is fixed inside the first clamping block 403, and the synchronous belt 9 is passed between the synchronous pulley 11 and the third mounting plate 10 so that the synchronous belt 9 and the synchronous pulley 11 can be connected. Then, the synchronous belt 9 is passed around the surface of the pulley 701 fixedly connected to the motor output end inside the chassis 7 under test. The structure of the chassis 7 under test is as follows. Figure 5 As shown, the other end of the synchronous belt 9 is fixed inside the second clamping block 407. After the synchronous belt 9 is installed, the tester can select the appropriate first counterweight 401 and second counterweight 405 as needed and install them on one side of the first test plate 404 and the second test plate 406 through the reserved mounting holes. Then, the tensioning wheel 603 provides appropriate tension to the two synchronous belts 9 so that both synchronous belts 9 are in a taut state. Finally, the motor in the test chassis 7 is driven so that the adjustment component 4 can move up and down along the direction of the vertical rod 3, realizing the scenario of the test chassis 7 simulating the actual use of the antenna tower chassis. This solution is compatible with various antenna tower chassis. The length of the synchronous belt 9 can be adjusted according to the needs of the test chassis 7. The reserved antenna tower counterweight mounting holes allow the antenna tower test load to be increased or decreased as needed. The force applied by the counterweight to the test chassis 7 is relatively stable, and it also avoids the safety hazards of manual load testing and saves labor costs.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An antenna frame for EMC load testing in an antenna tower chassis, characterized in that, The system includes a vertical rod (3), on which an adjustment assembly (4) is slidably mounted. The adjustment assembly (4) includes a clamping block, on which both ends of a synchronous belt (9) are connected. A synchronous pulley (11) is provided on the upper part of the vertical rod (3). The upper part of the synchronous belt (9) is mounted on the synchronous pulley (11), and the lower part of the synchronous belt (9) is mounted on the pulley (701) of the test chassis (7). A base plate (1) is provided below the vertical rod (3), and a clamping assembly (8) for fixing the test chassis (7) is installed on the base plate (1).

2. The antenna tower chassis EMC load test antenna frame according to claim 1, characterized in that, The base plate (1) is equipped with a first fixing plate (2), the lower end of the vertical rod (3) is connected to the first fixing plate (2), the upper end of the vertical rod (3) is connected to a horizontal rod (12), and the vertical rod (3) and the horizontal rod (12) are both fixed on the second fixing plate (5).

3. The antenna tower chassis EMC load test antenna frame according to claim 2, characterized in that, The bottom of the crossbar (12) is fixedly connected to a third mounting plate (10), and the interior of the third mounting plate (10) is rotatably connected to a synchronous pulley (11).

4. The antenna tower chassis EMC load test antenna frame according to claim 1, characterized in that, The adjustment assembly (4) includes multiple test plates, with a clamping block mounted on one of the test plates.

5. The antenna tower chassis EMC load test antenna frame according to claim 4, characterized in that, Each of the multiple test plates is equipped with a counterweight, and a roller (402) is rotatably connected to the inner side of the test plate.

6. The antenna tower chassis EMC load test antenna frame according to claim 1, characterized in that, The lower part of the vertical rod (3) is provided with a tensioning component (6).

7. The antenna tower chassis EMC load test antenna frame according to claim 6, characterized in that, The tensioning assembly (6) includes a first mounting plate (601), a plurality of second mounting plates (602) are fixedly connected to one side of the first mounting plate (601), and a tensioning wheel (603) is rotatably connected to one side of the second mounting plate (602).

8. The antenna tower chassis EMC load test antenna frame according to claim 1, characterized in that, The clamping assembly (8) includes a baffle (803), with fixing bolts (801) rotatably connected to both ends of the baffle (803), and the bottom end of the fixing bolts (801) penetrating the base plate (1).

9. The antenna tower chassis EMC load test antenna frame according to claim 8, characterized in that, The fixing bolt (801) has a fixing piece (802) at the position where it passes through the base plate (1).

10. The antenna tower chassis EMC load test antenna frame according to claim 1, characterized in that, The bottom of the base plate (1) is equipped with casters (101).

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