A microwave anechoic chamber capable of reducing environmental interference

Abstract

This utility model discloses a microwave anechoic chamber capable of reducing environmental interference, belonging to the field of microwave anechoic chamber technology. It includes a base plate with two sets of composite buffer mechanisms on the base plate. A microwave anechoic chamber is mounted on each of the two sets of composite buffer mechanisms. Each composite buffer mechanism includes two lower support plates fixedly connected to the base plate, and two upper support plates fixedly connected to the bottom of the microwave anechoic chamber. Piston ports are fixedly connected to the bottom of the upper support plates and the top of the lower support plates. Four rotating seats are fixedly connected to the bottom and top of the upper support plates, and pressure-bearing arms are rotatably connected to the rotating seats. This utility model, through the composite buffer mechanism, provides sufficient buffer protection for the microwave anechoic chamber through the double buffering of two buffer springs and an airtight chamber. Furthermore, two brake teeth plates inside the slider can limit the slider's movement, thereby ensuring the stability of the microwave anechoic chamber.

Description

Technical Field

[0001] This invention belongs to the field of microwave anechoic chamber technology, specifically a microwave anechoic chamber that can reduce environmental interference. Background Technology

[0002] A microwave anechoic chamber is a specialized laboratory facility designed to simulate the environment of free space. Its six interior walls are covered with high-performance absorbing materials that maximally absorb electromagnetic waves projected onto their surfaces, creating a near-reflection-free electromagnetic environment within the chamber—essentially placing the testing space in the vast universe, far removed from all electromagnetic interference. In this environment, researchers can precisely test the electromagnetic performance of electronic devices, antennas, and other components, avoiding interference from stray electromagnetic waves and ensuring the accuracy and reliability of test results.

[0003] The impact of environmental interference on microwave anechoic chambers should not be underestimated. First, electromagnetic interference from the outside world can severely disrupt the ideal electromagnetic environment within the anechoic chamber. For example, electromagnetic waves generated by nearby communication base stations, broadcast television towers, and various industrial equipment, once entering the anechoic chamber, will superimpose with the signals being tested inside, leading to deviations in the test data. This is akin to a quiet stage suddenly being disrupted by a noisy background, turning what was originally a clear performance into a chaotic mess, making it difficult for researchers to accurately determine the true performance of the equipment under test.

[0004] Secondly, environmental factors such as temperature and humidity also affect microwave anechoic chambers. Temperature changes can alter the physical properties of the absorbing materials within the chamber, thus affecting their absorption performance. High temperatures may cause structural deformation in some absorbing materials, reducing their absorption capacity for specific frequency bands of electromagnetic waves; while low temperatures may affect the material's flexibility, similarly hindering stable absorption performance. Regarding humidity, excessive humidity can cause the absorbing materials to become damp, leading to changes in their dielectric constant and interfering with the propagation characteristics of electromagnetic signals within the anechoic chamber. This is akin to adding impurities to clear lake water, disrupting its original purity and stability. Therefore, strictly controlling the environment of the microwave anechoic chamber is crucial for ensuring its normal operation and the accuracy of test results.

[0005] Existing technologies have the following shortcomings: In microwave anechoic chambers, buffering requirements are primarily manifested during equipment transportation. When large or sophisticated equipment under test, such as large radar antennas and satellite communication equipment, enters or exits the anechoic chamber, their large size, complex structure, and high cost mean they are easily damaged by collisions. Therefore, it is essential to ensure the buffering performance of the microwave anechoic chamber. Meanwhile, stability is a constant requirement throughout the operation of the anechoic chamber. From an electromagnetic environment perspective, the anechoic chamber requires stable electromagnetic shielding and absorption performance. This means ensuring that external electromagnetic interference does not intrude and that internal electromagnetic reflections are maintained at extremely low levels. This prevents interference with test signals and guarantees accurate and reliable electromagnetic performance test results for various electronic devices and antennas. Existing equipment cannot switch between buffered and stable states, causing the microwave anechoic chamber to be unable to adequately meet external environmental conditioning requirements. Utility Model Content

[0006] To overcome the above-mentioned defects, this utility model provides a microwave anechoic chamber that can reduce environmental interference, thus solving the problems in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a microwave anechoic chamber capable of reducing environmental interference, comprising:

[0008] The base plate has two sets of composite buffer mechanisms, and microwave anechoic chambers are set on the two sets of composite buffer mechanisms. Each composite buffer mechanism includes two lower support plates fixedly connected to the base plate. Two upper support plates are fixedly connected to the bottom of the microwave anechoic chamber. Piston ports are fixedly connected to the bottom of the upper support plates and the top of the lower support plates. Four rotating seats are fixedly connected to the bottom and top of the upper support plates. Pressure-bearing support arms are rotatably connected to the rotating seats.

[0009] An airtight chamber is slidably connected between the two piston ports on the corresponding side. Two grooved plates are fixedly connected to both ends of the airtight chamber. Two limiting slide rods are fixedly connected to the side of the two grooved plates on the corresponding side that are close to each other.

[0010] As a further embodiment of this utility model: telescopic rods are fixedly connected to both sides of the airtight chamber, and buffer springs are sleeved on the outside of each telescopic rod.

[0011] As a further embodiment of this utility model: a slider is fixedly connected to the output end of the telescopic rod, and the slider is slidably connected to four limiting sliders on the corresponding side.

[0012] As a further embodiment of this utility model: the two ends of the buffer spring abut against the base plate and the corresponding slider on one side, respectively.

[0013] As a further embodiment of this utility model: the end of the pressure-bearing support arm away from the rotating seat is rotatably connected to the slider on the corresponding side.

[0014] As a further embodiment of this utility model: two C-shaped partitions are fixedly connected inside the slider, and a drive gear is rotatably connected between the two C-shaped partitions.

[0015] As a further embodiment of this utility model: a servo motor is provided in one of the two C-shaped partitions, and the output end of the servo motor passes through the C-shaped partition and is fixedly connected to the drive gear on the same axis.

[0016] As a further embodiment of this utility model: two brake tooth plates are slidably connected inside the slider, both of which mesh with the drive gear, and the brake tooth plates cooperate with the grooved plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention employs a composite buffer mechanism, utilizing both airtight chamber buffering and spring buffering to effectively absorb and disperse the pressure and vibration experienced by the microwave anechoic chamber, ensuring the stability of equipment operation. Simultaneously, a servo motor-driven braking system precisely locks the slider position, preventing displacement and meeting the stringent stability requirements of the microwave anechoic chamber. When the microwave anechoic chamber is subjected to external pressure or vibration, the pressure is entirely applied to the composite buffer mechanism. At this time, the two piston ports inside the buffer mechanism simultaneously compress the air within the airtight chamber. Due to the high-strength sealing design of the airtight chamber, the compressed internal air generates reverse pressure, forming buffer resistance and effectively absorbing impact energy. The airtight chamber is filled with an inert gas (such as nitrogen), rather than ordinary air, to avoid the effects of oxidation and humidity on internal components. The chamber walls are made of high-strength aluminum alloy or composite materials to ensure they will not deform or crack under high pressure. Furthermore, the piston ports use low-friction coefficient sealing rings to reduce movement resistance, making the buffering process smoother. In addition to airtight chamber buffering, the composite buffer mechanism also employs mechanical spring buffering as a second layer of protection. As the two piston ports move relative to each other, the angle of the pressure-bearing arms connecting them changes, causing the two sliders to move away from each other. Since the sliders are connected to the buffer springs, the movement of the sliders stretches or compresses the springs, causing them to generate a counterforce that further counteracts the impact energy. Additionally, when the system detects that the microwave anechoic chamber needs to be fixed, the servo motor starts, driving the gears to rotate, causing the two brake toothed plates to expand outwards and engage with the serrated grooves of the grooved plate. Because the brake toothed plates employ a bidirectional meshing design, they will not easily disengage even under strong vibrations, thus ensuring the slider position is completely fixed. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the composite buffer mechanism of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the grooved plate portion of this utility model;

[0022] Figure 4 This is a three-dimensional internal structure diagram of the slider of this utility model.

[0023] In the diagram: 1. Base plate, 2. Microwave anechoic chamber, 3. Lower support plate, 4. Upper support plate, 5. Piston port, 6. Rotating seat, 7. Pressure-bearing support arm, 8. Airtight chamber, 9. Grooved plate, 10. Limiting slide bar, 11. Telescopic rod, 12. Buffer spring, 13. Slider, 14. C-shaped partition, 15. Drive gear, 16. Servo motor, 17. Brake tooth plate. Detailed Implementation

[0024] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0025] like Figures 1-4 As shown, this utility model provides a technical solution:

[0026] A microwave anechoic chamber capable of reducing environmental interference includes:

[0027] The foundation plate 1 has two sets of composite buffer mechanisms, and microwave anechoic chambers 2 are set on the two sets of composite buffer mechanisms. The composite buffer mechanism includes two lower support plates 3 fixedly connected to the foundation plate 1. Two upper support plates 4 are fixedly connected to the bottom of the microwave anechoic chamber 2. Piston ports 5 are fixedly connected to the bottom of the upper support plates 4 and the top of the lower support plates 3. Four rotating seats 6 are fixedly connected to the bottom of the upper support plates 4 and the top of the upper support plates 4. Pressure-bearing support arms 7 are rotatably connected to the rotating seats 6.

[0028] An airtight chamber 8 is slidably connected between two piston ports 5 on the corresponding side. Two grooved plates 9 are fixedly connected to both ends of the airtight chamber 8. Two limiting slide rods 10 are fixedly connected to the sides of the two grooved plates 9 on the corresponding side that are close to each other. Telescopic rods 11 are fixedly connected to both sides of the airtight chamber 8. Buffer springs 12 are sleeved on the outside of each telescopic rod 11. A slider 13 is fixedly connected to the output end of the telescopic rod 11. The slider 13 is slidably connected to the four limiting slide rods 10 on the corresponding side. The two ends of the buffer springs 12 are respectively connected to the base plate 1 and the slider 13 on the corresponding side. The pressure-bearing support arm 7, at the end furthest from the rotating seat 6, is rotatably connected to the corresponding slider 13. The first measure for the composite buffer mechanism to achieve buffering comes from the airtight chamber 8. When the pressure of the microwave anechoic chamber 2 is fully applied to the composite buffer mechanism, the inert gas in the airtight chamber 8 is accumulated in the two piston ports 5, thereby achieving the purpose of buffering. In addition, when the two piston ports 5 move relative to each other, the angle of the pressure-bearing support arm 7 will also change, and the two sliders 13 will move away from each other. The buffer spring 12 will apply a reaction force to the sliders 13, thereby achieving a further buffering effect.

[0029] Two C-shaped partitions 14 are fixedly connected inside the slider 13. A drive gear 15 is rotatably connected between the two C-shaped partitions 14. A servo motor 16 is installed inside one of the C-shaped partitions 14. The output end of the servo motor 16 passes through the C-shaped partition 14 and is coaxially and fixedly connected to the drive gear 15. Two brake toothed plates 17 are slidably connected inside the slider 13. Both brake toothed plates 17 mesh with the drive gear 15. The brake toothed plates 17 cooperate with the grooved plate 9. The servo motor 16 inside the slider 13 can drive the drive gear 15 to rotate. The rotation of the drive gear 15 will drive the two brake toothed plates 17 that are meshed with it to move in the opposite direction, thereby locking into the grooved plate 9 and braking the slider 13. After the slider 13 is fixed in position, because the brake toothed plates 17 adopt a bidirectional meshing design, they will not easily disengage even under strong vibration, thus ensuring that the slider 13 is completely fixed in position. The overall stability of the device is guaranteed, thereby meeting the stability requirements of the microwave anechoic chamber 2.

[0030] The working principle of this utility model is as follows:

[0031] The first measure for buffering in the composite buffering mechanism comes from the airtight chamber 8. When the pressure of the microwave anechoic chamber 2 is fully applied to the composite buffering mechanism, the inert gas accumulated in the airtight chamber 8 at the two piston ports 5 achieves the buffering purpose, thus avoiding the influence of oxidation and humidity on the internal components. The chamber wall is made of high-strength aluminum alloy or composite material to ensure that it will not deform or crack under high pressure. In addition, the piston ports 5 use low-friction coefficient sealing rings to reduce movement resistance and make the buffering process smoother. Furthermore, when the two piston ports 5 move relative to each other, the angle of the pressure-bearing support arm 7 also changes, and the two sliders 13 will move away from each other. The buffer spring 12 will then apply a reaction force to the sliders 13, thereby achieving a further buffering effect.

[0032] The servo motor 16 inside the slider 13 can drive the drive gear 15 to rotate. The rotation of the drive gear 15 will cause the two brake tooth plates 17 meshing with it to move in the opposite direction, thereby locking into the grooved plate 9 and braking the slider 13. After the slider 13 is fixed, because the brake tooth plates 17 adopt a bidirectional meshing design, they will not easily disengage even under strong vibration, thus ensuring that the slider 13 is completely fixed and the overall stability of the device is guaranteed, thereby meeting the stability requirements of the microwave anechoic chamber 2.

[0033] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A microwave anechoic chamber capable of reducing environmental interference, characterized in that, include: The base plate (1) is provided with two sets of composite buffer mechanisms. The two sets of composite buffer mechanisms are provided with microwave anechoic chambers (2). The composite buffer mechanism includes two lower support plates (3) fixedly connected to the base plate (1). The bottom of the microwave anechoic chamber (2) is fixedly connected with two upper support plates (4). The bottom of the upper support plate (4) and the top of the lower support plate (3) are both fixedly connected with piston ports (5). The bottom of the upper support plate (4) and the top of the upper support plate (4) are both fixedly connected with four rotating seats (6). The rotating seats (6) are rotatably connected with pressure-bearing arms (7). An airtight chamber (8) is slidably connected between the two piston ports (5) on the corresponding side. Two grooved plates (9) are fixedly connected to both ends of the airtight chamber (8). Two limiting slide rods (10) are fixedly connected to the side of the two grooved plates (9) on the corresponding side that are close to each other.

2. The microwave anechoic chamber capable of reducing environmental interference according to claim 1, characterized in that: Both sides of the airtight chamber (8) are fixedly connected to telescopic rods (11), and buffer springs (12) are sleeved on the outside of the telescopic rods (11).

3. A microwave anechoic chamber capable of reducing environmental interference according to claim 2, characterized in that: The output end of the telescopic rod (11) is fixedly connected to a slider (13), and the slider (13) is slidably connected to four limiting sliders (10) on the corresponding side.

4. A microwave anechoic chamber capable of reducing environmental interference according to claim 3, characterized in that: The two ends of the buffer spring (12) abut against the base plate (1) and the corresponding slider (13) on the same side, respectively.

5. A microwave anechoic chamber capable of reducing environmental interference according to claim 4, characterized in that: The end of the pressure-bearing arm (7) away from the rotating seat (6) is rotatably connected to the slider (13) on the corresponding side.

6. A microwave anechoic chamber capable of reducing environmental interference according to claim 5, characterized in that: Two C-shaped partitions (14) are fixedly connected inside the slider (13), and a drive gear (15) is rotatably connected between the two C-shaped partitions (14).

7. A microwave anechoic chamber capable of reducing environmental interference according to claim 6, characterized in that: A servo motor (16) is installed in one of the two C-shaped partitions (14). The output end of the servo motor (16) passes through the C-shaped partition (14) and is coaxially and fixedly connected to the drive gear (15).

8. A microwave anechoic chamber capable of reducing environmental interference according to claim 7, characterized in that: Two brake tooth plates (17) are slidably connected inside the slider (13). The brake tooth plates (17) mesh with the drive gear (15). The brake tooth plates (17) cooperate with the grooved plate (9).

Images