Microwave antenna focal length adjusting device

Abstract

The utility model relates to the technical field of microwave antennas, and discloses a microwave antenna focal length adjusting device, which comprises a reflecting surface and a supporting seat used for fixing the reflecting surface, a connecting assembly is arranged on the reflecting surface, and a feed source assembly used for transmitting and receiving signals is arranged on one side, far away from the supporting seat, of the connecting assembly. A first adjusting assembly used for preliminarily adjusting the connecting assembly is installed on the supporting seat, and a second adjusting assembly used for finely adjusting the focal length of the reflecting surface and the feed source assembly is installed in the first adjusting assembly. According to the utility model, the first adjusting assembly and the second adjusting assembly cooperate with each other, so that errors are corrected step by step by a stage adjusting method of preliminary adjustment and fine adjustment, the comprehensive debugging efficiency and the debugging accuracy are higher, and the feed source rod and the moving rod are fixed through cooperation of the clamping blocks and the clamping grooves and then are reinforced through the fixing bolts. The problem of dislocation caused by accumulative errors in the splicing process can be effectively avoided, and the influence of external force interference on assembly is reduced.

Description

Technical Field

[0001] This utility model relates to the field of microwave antenna technology, specifically to a microwave antenna focal length adjustment device. Background Technology

[0002] A microwave antenna is a radio transceiver that operates in the meter wave, centimeter wave, and millimeter wave bands. Its core function is to achieve bidirectional conversion between electromagnetic waves and electrical signals, and to improve the transmission efficiency of microwave signals through directional radiation. Its role is to convert high-frequency current into directional microwave electromagnetic waves, or to induce spatial electromagnetic waves into processable electrical signals. It is mainly used in radar detection, satellite communication, long-distance radio transmission and other fields.

[0003] A microwave antenna focal length adjustment device, with announcement number CN220963763U, includes: a reflector, a feed component, a feed tube, a feed connector, a fixed plate, a gear ring, a drive gear, an adjusting gear, and an adjusting screw. The feed component is located behind the reflector; the feed tube passes through the reflector and its rear end is connected to the feed component; the feed connector is located between the reflector and the feed component, and the feed component is fixed to the feed connector; the fixed plate is located between the reflector and the feed connector and is fixed to the reflector; the gear ring is located between the reflector and the fixed plate; the drive gear is mounted on the fixed plate and meshes with the gear ring; the adjusting gear is mounted on the fixed plate and meshes with the gear ring; and the adjusting screw is fixed to the feed connector and threadedly connected to the adjusting gear. This embodiment facilitates finding the optimal focal position of the microwave antenna focal length adjustment device, maximizing its performance and improving testing efficiency.

[0004] However, when adjusting the focal position, the device only uses a drive screw with a fixed pitch, resulting in low adjustment resolution and very limited adjustment accuracy. This means that users need to make repeated adjustments when adjusting the focal position, leading to low debugging efficiency and accuracy. Furthermore, the device's feed tube is difficult to install and remove, making it inconvenient for users to inspect and maintain. Utility Model Content

[0005] The purpose of this invention is to provide a microwave antenna focal length adjustment device, which solves the problem that in the prior art, when adjusting the focal position, the adjustment is only done by driving a screw and fixing the pitch, resulting in low adjustment resolution and very limited adjustment accuracy. As a result, users need to make repeated adjustments when adjusting the focal position, which leads to low debugging efficiency and accuracy. In addition, the feed tube of this device is difficult to install and remove, making it inconvenient for users to inspect and maintain.

[0006] This utility model provides the following technical solution: a microwave antenna focal length adjustment device, including a reflective surface and a support base for fixing the reflective surface, a connecting component is installed on the reflective surface, a feed component for transmitting and receiving signals is provided on the side of the connecting component away from the support base, a first adjustment component for initially adjusting the connecting component is installed on the support base, and a second adjustment component for finely adjusting the focal length of the reflective surface and the feed component is installed in the first adjustment component.

[0007] As a preferred embodiment of the above technical solution, the connecting assembly includes a moving rod and a feed rod. The moving rod is slidably sleeved at the center of the reflective surface. The moving rod has an installation groove, and an installation block slides within the installation groove. The feed rod is fixedly connected to one side of the installation block. The moving rod has a moving cavity, and a locking block is slidably sleeved inside the moving cavity. A locking groove is formed on one side of the installation block. The locking end of the locking block is wedge-shaped, and the locking block and the locking groove engage with each other. A pull rod is slidably sleeved inside the moving cavity, and one end of the pull rod passes through an inner wall of the moving cavity to the outside of the moving rod. One end of the pull rod is fixedly connected to the locking block. Multiple fixing bolts are threaded through the feed rod. Multiple internally threaded holes are formed at the end of the moving rod away from the reflective surface, and the multiple fixing bolts are threaded into the multiple internally threaded holes respectively. Multiple springs are fixedly connected between the inner wall of the moving cavity and the locking block.

[0008] As a preferred embodiment of the above technical solution, the first adjustment component includes a double-sided gear ring, which is rotatably connected to the side of the support base away from the reflective surface. Multiple first gears arranged in a ring mesh on the inner side of the double-sided gear ring. Each of the multiple first gears is fixedly connected to a first threaded rod on the side away from the support base. Each of the multiple first threaded rods is threadedly connected to a fixed cylinder at the end away from the reflective surface. A fixed plate is fixedly connected to the side of the multiple fixed cylinders away from the reflective surface. A movable rod is slidably sleeved at the center of the fixed plate. A second gear is rotatably connected to the side of the support base away from the reflective surface. The second gear meshes with the outer teeth of the double-sided gear ring. A vertical plate is fixedly connected to the side of the support base away from the feed rod. A rotating rod is fixedly connected to the side of the second gear away from the reflective surface. The rotating rod is rotatably sleeved on the vertical plate.

[0009] As a preferred embodiment of the above technical solution, the second adjustment component includes a connecting plate, which is fixedly connected to the side of the fixed plate away from the support base. A movable groove is formed on the side of the connecting plate away from the reflective surface. A slider is slidably connected in the movable groove. A connecting rod is hinged to the side of the slider away from the reflective surface. A fixed block is fixedly connected to the end of the movable rod away from the feed rod. The end of the connecting rod away from the slider is hinged to the fixed block. A second threaded rod is rotatably connected to the inner wall of the movable groove. The second threaded rod is threaded through the slider. A driving rod is rotatably sleeved on the side of the connecting plate away from the movable rod. One end of the driving rod is fixedly connected to the end of the second threaded rod away from the movable rod.

[0010] As a preferred embodiment of the above technical solution, the feed assembly includes a feed system, the feed system is fixedly installed at the end of the feed rod away from the reflective surface, and the feed component is fixedly installed at the end of the fixing block away from the feed system.

[0011] As a preferred embodiment of the above technical solution, a protective sleeve is fixedly connected to the side wall of the feed component, a movable opening is provided on the side wall of the protective sleeve, a movable block is slidably connected to the inner wall of the movable opening, the drive rod is rotatably sleeved at the center of the movable block, and limit bolts are threaded through both the rotating rod and the drive rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This microwave antenna focal length adjustment device, by driving the first gear to rotate, and the cooperation between the double-sided gear ring and the second gear, causes the first threaded rod to rotate, thereby moving the fixed cylinder on the first threaded rod. This allows the moving rod to slide on the reflector surface, achieving initial adjustment of the focal length between the reflector surface and the feed system. After the initial adjustment is completed, the second threaded rod is driven to rotate. With the cooperation of the slider and the connecting rod, the fixed block drives the moving rod to move, thereby achieving fine adjustment of the focal length between the reflector surface and the feed system. Through the staged adjustment method of initial adjustment and fine adjustment, the error is corrected step by step, resulting in higher overall debugging efficiency and accuracy.

[0014] 2. This microwave antenna focal length adjustment device uses a locking block and a slot to fix the feed rod and the moving rod, making the feed rod detachable. This facilitates user maintenance of the feed system and allows for the positioning and fixing of the feed rod. Subsequently, the user installs the fixing bolts into the internal threaded holes in sequence. The locking block and slot pre-define the spatial position of the feed rod, which can effectively avoid misalignment problems caused by accumulated errors during the splicing process. It can realize the process from initial fixing and adjustment to final reinforcement, and reduce the impact of external interference on the assembly. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of a microwave antenna focal length adjustment device;

[0016] Figure 2 A three-dimensional side view of a microwave antenna focal length adjustment device;

[0017] Figure 3 A three-dimensional structural schematic diagram of a microwave antenna focal length adjustment device from another perspective;

[0018] Figure 4 A schematic diagram of the connection component structure of a microwave antenna focal length adjustment device;

[0019] Figure 5 A schematic diagram of the first adjustment component of a microwave antenna focal length adjustment device;

[0020] Figure 6 A schematic diagram of the structure of the second adjustment component of a microwave antenna focal length adjustment device;

[0021] Figure 7 This is a schematic diagram of the feed assembly structure of a microwave antenna focal length adjustment device.

[0022] Legend:

[0023] 1. Reflector; 2. Support base; 3. Connecting assembly; 301. Moving rod; 302. Feed rod; 303. Mounting block; 304. Moving cavity; 305. Locking block; 306. Fixing bolt; 307. Spring; 308. Mounting groove; 309. Pull rod; 310. Internal threaded hole; 311. Locking groove; 4. First adjusting assembly; 401. Double-sided gear ring; 402. First gear; 403. First threaded rod; 404. Fixing cylinder 405. Fixed plate; 406. Second gear; 407. Vertical plate; 408. Rotating rod; 5. Second adjusting assembly; 501. Connecting plate; 502. Slider; 503. Connecting rod; 504. Second threaded rod; 505. Moving groove; 506. Fixed block; 507. Drive rod; 6. Feed assembly; 601. Feed system; 602. Feed component; 7. Protective sleeve; 8. Moving port; 9. Moving block; 10. Limit bolt. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figures 1-2As shown, this utility model provides a technical solution: a microwave antenna focal length adjustment device, including a reflective surface 1 and a support base 2 for fixing the reflective surface 1. A connecting component 3 is installed on the reflective surface 1. A feed component 6 for transmitting and receiving signals is provided on the side of the connecting component 3 away from the support base 2. A first adjustment component 4 for preliminary adjustment of the connecting component 3 is installed on the support base 2. A second adjustment component 5 for fine adjustment of the focal length of the reflective surface 1 and the feed component 6 is installed inside the first adjustment component 4.

[0026] This microwave antenna focal length adjustment device, by driving the first gear 402 to rotate, engages with the double-sided gear ring 401 and the second gear 406, causing the first threaded rod 403 to rotate. This allows the fixed cylinder 404 to move on the first threaded rod 403, thereby causing the moving rod 301 to slide on the reflector surface 1, achieving initial adjustment of the focal length between the reflector surface 1 and the feed system 601. After the initial adjustment is completed, the second threaded rod 504 is driven to rotate. With the cooperation of the slider 502 and the connecting rod 503, the fixed block 506 drives the moving rod 301 to move, thereby achieving fine adjustment of the focal length between the reflector surface 1 and the feed system 601. Through the initial adjustment and fine adjustment... The staged adjustment method corrects errors step by step, resulting in higher overall debugging efficiency and accuracy. This microwave antenna focal length adjustment device uses a locking block 305 in conjunction with a slot 311 to fix the feed rod 302 and the moving rod 301, making the feed rod 302 detachable. This facilitates user maintenance of the feed system 601 and allows for the positioning and fixing of the feed rod 302. Subsequently, the user installs the fixing bolts 306 sequentially into the internal threaded holes 310. By using the locking block 305 in conjunction with the slot 311 to pre-define the spatial position of the feed rod 302, it can effectively avoid misalignment problems caused by accumulated errors during the splicing process. This enables a process from initial fixing and adjustment to final reinforcement, reducing the impact of external interference on assembly.

[0027] As one implementation method in this embodiment, please refer to Figures 3-4As shown, the connecting assembly 3 includes a moving rod 301 and a feed rod 302. The moving rod 301 is slidably sleeved at the center of the reflector 1. A mounting groove 308 is provided on the moving rod 301, and a mounting block 303 slides in the mounting groove 308. The feed rod 302 is fixedly connected to one side of the mounting block 303. A moving cavity 304 is provided on the moving rod 301, and a locking block 305 is slidably sleeved inside the moving cavity 304. A locking groove 311 is provided on one side of the mounting block 303. The locking end of the locking block 305 is wedge-shaped, and the locking block 305 and the locking groove 311 cooperate with each other. The moving cavity 304 is slidably fitted with a pull rod 309, one end of which passes through the inner wall of the moving cavity 304 and extends to the outside of the moving rod 301. One end of the pull rod 309 is fixedly connected to the locking block 305. Multiple fixing bolts 306 are threaded through the feed rod 302. Multiple internal threaded holes 310 are opened at the end of the moving rod 301 away from the reflector 1. The multiple fixing bolts 306 are respectively threaded into the multiple internal threaded holes 310. Multiple springs 307 are fixedly connected between the inner wall of the moving cavity 304 and the locking block 305.

[0028] When assembling the moving rod 301 and the feed rod 302, the mounting block 303 on the feed rod 302 is aligned with the mounting groove 308 and inserted. The side of the mounting block 303 with the slot 311 should face the locking block 305. During insertion, the top of the mounting block 303 will first contact the locking block 305. Since the locking end of the locking block 305 is wedge-shaped, the top of the mounting block 303 will apply pressure to the locking block 305. The inclined surface of the locking block 305 will decompose the pressure into forces perpendicular to and parallel to the insertion direction. At this time, the spring 307 is pushed and contracts, and the entire locking block 305 will temporarily retract into the moving cavity 304. After the mounting block 303 is inserted into the mounting groove 308, the slot 311 is now facing the locking block 305. When the locking block 305 is no longer restricted by the side wall of the mounting block 303, the spring 307 returns to its original position, and the locking block 305 automatically moves into the slot 311, thereby completing the positioning and fixing between the feed rod 302 and the moving rod 301. Then, the fixing bolts 306 are installed into the internal threaded holes 310 in sequence to achieve stable splicing and fixing between the moving rod 301 and the feed rod 302. By using the locking block 305 in conjunction with the slot 311 to pre-limit the spatial position of the feed rod 302, the misalignment problem caused by accumulated errors during the splicing process can be effectively avoided. It can realize the process from initial fixing and adjustment to final reinforcement, reduce the impact of external force interference on assembly, and make the feed rod 302 detachable after installation, which is convenient for users to maintain the feed system 601.

[0029] As one implementation method in this embodiment, please refer to Figure 5As shown, the first adjustment component 4 includes a double-sided gear ring 401, which is rotatably connected to the side of the support base 2 away from the reflective surface 1. Multiple first gears 402 arranged in a ring are meshed on the inner side of the double-sided gear ring 401. Each of the multiple first gears 402 is fixedly connected to a first threaded rod 403 on the side away from the support base 2. Each of the multiple first threaded rods 403 is threadedly connected to a fixed cylinder 404 at the end away from the reflective surface 1. A fixed plate 405 is fixedly connected to the side of the multiple fixed cylinders 404 away from the reflective surface 1. A moving rod 301 is slidably sleeved at the center of the fixed plate 405. A second gear 406 is rotatably connected to the side of the support base 2 away from the reflective surface 1. The second gear 406 meshes with the outer teeth of the double-sided gear ring 401. A vertical plate 407 is fixedly connected to the side of the support base 2 away from the feed rod 302. A rotating rod 408 is fixedly connected to the side of the second gear 406 away from the reflective surface 1. The rotating rod 408 is rotatably sleeved on the vertical plate 407.

[0030] When it is necessary to adjust the focal length of the feed system 601 and the reflector 1, the user drives the second gear 406 to rotate by rotating the rod 408. The double-sided gear ring 401 will then rotate on the support base 2. The multiple first gears 402 arranged in a ring will be driven by the double-sided gear ring 401, thereby causing the multiple first threaded rods 403 to rotate. The fixed cylinder 404 will slide on the first threaded rods 403, thereby driving the second adjustment component 5 to move as a whole. The moving rod 301 will slide at the center of the reflector 1, completing the initial adjustment of the focal length between the reflector 1 and the feed system 601.

[0031] As one implementation method in this embodiment, please refer to Figure 6 As shown, the second adjustment component 5 includes a connecting plate 501, which is fixedly connected to the side of the fixed plate 405 away from the support base 2. A moving groove 505 is provided on the side of the connecting plate 501 away from the reflective surface 1. A slider 502 is slidably connected in the moving groove 505. A connecting rod 503 is hinged to the side of the slider 502 away from the reflective surface 1. A fixed block 506 is fixedly connected to the end of the moving rod 501 away from the feed rod 302. The end of the connecting rod 503 away from the slider 502 is hinged to the fixed block 506. A second threaded rod 504 is rotatably connected to the inner wall of the moving groove 505. The second threaded rod 504 is threaded through the slider 502. A driving rod 507 is rotatably sleeved on the side of the connecting plate 501 away from the moving rod 301. One end of the driving rod 507 is fixedly connected to the end of the second threaded rod 504 away from the moving rod 301.

[0032] After initial adjustment to the approximate range, the user rotates the drive rod 507, causing the second threaded rod 504 in the moving groove 505 to rotate, making the slider 502 slide within the moving groove 505. The connecting rod 503 then rotates and moves along with the slider 502. At this time, the moving rod 301 is limited by the reflective surface 1 and the fixed plate 405, so that the moving rod 301 can only move along the sliding direction of the fixed cylinder 404 on the first threaded rod 403. The connecting rod 503 can then pull the moving rod 301 to move, thereby achieving fine-tuning of the focal length between the reflective surface 1 and the feed system 601. By using a phased adjustment method of initial adjustment and fine-tuning to correct errors step by step, performance can be maximized more reliably, and the overall debugging efficiency and accuracy are higher.

[0033] As one implementation method in this embodiment, please refer to Figure 7 As shown, the feed assembly 6 includes a feed system 601, which is fixedly installed at the end of the feed rod 302 away from the reflective surface 1, and the feed component 602 is fixedly installed at the end of the fixing block 506 away from the feed system 601.

[0034] Both the feed system 601 and the feed component 602 are existing technologies. The two work together to convert the guided electromagnetic wave into spherical wave radiation and accurately position the phase center at the focal point of the reflecting surface 1. Its geometric characteristics convert the spherical wave into a plane wavefront, realizing directional beam radiation. Through precise geometric optical design and electromagnetic field control, efficient spatial directional transmission of electromagnetic energy is achieved, which will not be elaborated here.

[0035] As one implementation method in this embodiment, please refer to Figure 6 As shown, a protective sleeve 7 is fixedly connected to the side wall of the feed component 602. A movable opening 8 is opened on the side wall of the protective sleeve 7. A movable block 9 is slidably connected to the inner wall of the movable opening 8. The drive rod 507 is rotatably sleeved at the center of the movable block 9. Limit bolts 10 are threaded through both the rotating rod 408 and the drive rod 507.

[0036] After adjustment, the user rotates the limiting bolts 10 in sequence, causing the two limiting bolts 10 to press and fix onto the upright plate 407 and the moving block 9 in sequence, thereby limiting the rotation rod 408 and the drive rod 507. This prevents the rotation rod 408 and the drive rod 507 from being easily rotated by external forces, and prevents the feed system 601 from moving. The protective sleeve 7 can be used to cover the second adjustment component 5, thereby protecting the second threaded rod 504 and preventing external impurities from entering the moving groove 505 and affecting the transmission of the second threaded rod 504. When fine-tuning, the moving rod 301 will move, while the fixed plate 405 will not move. Specifically, the protective sleeve 7 will move with the feed component 602, while the moving block 9 will move within the moving opening 8, thus ensuring that the drive rod 507 will not affect the movement of the protective sleeve 7. It is worth noting that the pitch of the second threaded rod 504 is smaller than the pitch of the first threaded rod 403.

[0037] Working principle: When splicing the moving rod 301 and the feed rod 302, the mounting block 303 on the feed rod 302 is aligned with the mounting groove 308 and inserted. The side of the mounting block 303 with the slot 311 should face the locking block 305. During insertion, the top of the mounting block 303 will first contact the locking block 305. Since the locking end of the locking block 305 is wedge-shaped, the top of the mounting block 303 will apply pressure to the locking block 305. The inclined surface of the locking block 305 will decompose the pressure into forces perpendicular to and parallel to the insertion direction. At this time, the spring 307 is pushed and contracts, and the entire locking block 305 will temporarily retract into the moving cavity 304. When the mounting block 303 is inserted into the mounting groove 308, the slot 311 is facing the locking block 305. Block 305, the locking block 305, is no longer restricted by the side wall of the mounting block 303. At this time, the spring 307 returns to its original position, and the locking block 305 automatically moves into the slot 311, thereby completing the positioning and fixing between the feed rod 302 and the moving rod 301. Subsequently, the fixing bolts 306 are installed into the internal threaded holes 310 in sequence to achieve stable splicing and fixing between the moving rod 301 and the feed rod 302. By using the locking block 305 in conjunction with the slot 311 to pre-limit the spatial position of the feed rod 302, the misalignment problem caused by accumulated errors during the splicing process can be effectively avoided. It can realize the process from initial fixing and adjustment to final reinforcement, reduce the impact of external force interference on assembly, and make the feed rod 302 detachable after installation, which is convenient for users to perform on the feed system 601. During maintenance, when the focal length of the feed system 601 and the reflector 1 needs adjustment, the user rotates the second gear 406 by rotating the rotating rod 408. The double-sided gear ring 401 then rotates on the support base 2. Multiple first gears 402 arranged in a ring are driven by the double-sided gear ring 401, causing multiple first threaded rods 403 to rotate. The fixed cylinder 404 slides on the first threaded rods 403, thus moving the second adjustment assembly 5 as a whole. The moving rod 301 slides at the center of the reflector 1, completing the initial adjustment of the focal length between the reflector 1 and the feed system 601. After the initial adjustment to the approximate range, the user rotates the driving rod 507, causing the second threaded rod 504 in the moving groove 505 to rotate, thus moving the slider 502... The sliding rod 503 slides within the sliding groove 505, and the connecting rod 503 rotates and moves along with the slider 502. At this time, the moving rod 301 is limited by the reflective surface 1 and the fixed plate 405, so that the moving rod 301 can only move along the sliding direction of the fixed cylinder 404 on the first threaded rod 403. The connecting rod 503 can then pull the moving rod 301 to move, thereby achieving fine-tuning of the focal length between the reflective surface 1 and the feed system 601. By using a phased adjustment method of initial adjustment and fine-tuning, the error is corrected step by step, resulting in higher overall debugging efficiency and accuracy. After the adjustment is completed, the user rotates the limiting bolts 10 in sequence, so that the two limiting bolts 10 are pressed and fixed onto the vertical plate 407 and the moving block 9 in sequence, thereby limiting the rotation rod 408 and the drive rod 507.This prevents the limiting mechanisms of the rotating rod 408 and the driving rod 507 from easily rotating due to external forces, and prevents the feed system 601 from moving.

[0038] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A microwave antenna focal length adjustment device comprising a reflecting surface (1) and a support seat (2) for fixing the reflecting surface (1), characterized in that: A connecting component (3) is installed on the reflective surface (1). A feed component (6) for transmitting and receiving signals is provided on the side of the connecting component (3) away from the support base (2). A first adjustment component (4) for preliminary adjustment of the connecting component (3) is installed on the support base (2). A second adjustment component (5) for fine adjustment of the focal length of the reflective surface (1) and the feed component (6) is installed in the first adjustment component (4).

2. A microwave antenna focal length adjustment device according to claim 1, characterized in that: The connecting assembly (3) includes a moving rod (301) and a feed rod (302). The moving rod (301) is slidably sleeved at the center of the reflective surface (1). The moving rod (301) has an installation groove (308) and an installation block (303) slides in the installation groove (308). The feed rod (302) is fixedly connected to one side of the installation block (303). The moving rod (301) has a moving cavity (304) and a locking block (305) slides inside the moving cavity (304). The installation block (303) has a locking groove (311) on one side. The locking end of the locking block (305) is wedge-shaped. The locking block (305) and the locking groove (311) are connected together. 1) The moving cavity (304) is slidably sleeved with a pull rod (309) inside, and one end of the pull rod (309) passes through the inner wall of the moving cavity (304) and extends to the outside of the moving rod (301). One end of the pull rod (309) is fixedly connected to the locking block (305). Multiple fixing bolts (306) are threaded through the feed rod (302). Multiple internal threaded holes (310) are opened at the end of the moving rod (301) away from the reflector (1). The multiple fixing bolts (306) are threadedly connected to the multiple internal threaded holes (310). Multiple springs (307) are fixedly connected between the inner wall of the moving cavity (304) and the locking block (305).

3. A microwave antenna focal length adjustment device according to claim 2, wherein: The first adjustment component (4) includes a double-sided gear ring (401), which is rotatably connected to the side of the support base (2) away from the reflective surface (1). Multiple first gears (402) arranged in a ring mesh on the inner side of the double-sided gear ring (401). A first threaded rod (403) is fixedly connected to the side of each of the multiple first gears (402) away from the support base (2). A fixed cylinder (404) is threadedly connected to the end of each of the multiple first threaded rods (403) away from the reflective surface (1). The fixed cylinder (404) is fixedly connected to the side of each of the multiple fixed cylinders (404) away from the reflective surface (1). A fixed plate (405) is attached, and the moving rod (301) is slidably sleeved at the center of the fixed plate (405). The support base (2) is rotatably connected to a second gear (406) on the side away from the reflective surface (1). The outer teeth of the second gear (406) and the double-sided toothed ring (401) mesh with each other. The support base (2) is fixedly connected to a vertical plate (407) on the side away from the feed rod (302). The second gear (406) is fixedly connected to a rotating rod (408) on the side away from the reflective surface (1). The rotating rod (408) is rotatably sleeved inside the vertical plate (407).

4. A microwave antenna focal length adjustment device according to claim 3, wherein: The second adjustment component (5) includes a connecting plate (501), which is fixedly connected to the side of the fixed plate (405) away from the support base (2). A moving groove (505) is provided on the side of the connecting plate (501) away from the reflector (1). A slider (502) is slidably connected in the moving groove (505). A connecting rod (503) is hinged to the side of the slider (502) away from the reflector (1). A connecting rod (503) is fixedly connected to one end of the moving rod (501) away from the feed rod (302). The fixed block (506) has the end of the connecting rod (503) away from the slider (502) hinged to the fixed block (506). The inner wall of the moving groove (505) is rotatably connected to the second threaded rod (504), which is threaded through the slider (502). The connecting plate (501) is rotatably sleeved with a driving rod (507) on the side away from the moving rod (301). One end of the driving rod (507) is fixedly connected to the end of the second threaded rod (504) away from the moving rod (301).

5. A microwave antenna focal length adjustment device as claimed in claim 4, characterized in that: The feed assembly (6) includes a feed system (601), which is fixedly installed at the end of the feed rod (302) away from the reflective surface (1), and a feed component (602) is fixedly installed at the end of the fixing block (506) away from the feed system (601).

6. A microwave antenna focal length adjustment device according to claim 5, wherein: The feed component (602) has a protective sleeve (7) fixedly connected to its side wall. The protective sleeve (7) has a movable opening (8) on its side wall. The movable opening (8) has a movable block (9) slidably connected to its inner wall. The drive rod (507) is rotatably sleeved at the center of the movable block (9). The rotating rod (408) and the drive rod (507) are both threaded with limit bolts (10).

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