A satellite signal receiver

Abstract

This invention belongs to the field of satellite antenna technology, specifically a satellite signal receiver; it includes a satellite antenna; the satellite antenna includes a parabolic reflector; an arc-shaped cylindrical cavity is provided on the back of the parabolic reflector; a rotating cylinder is rotatably mounted on the middle of the arc-shaped cylindrical cavity and the parabolic reflector; a first arc plate is fixed on the outer ring surface of the rotating cylinder; a sliding column slides inside the rotating cylinder; a rectangular groove is formed inside the sliding column; a second arc plate rotates within the rectangular groove via a torsion spring and a rotating shaft; a rectangular frame is fixed on the back of the arc-shaped cylindrical cavity; a triangular block is fixed at the bottom of the rectangular frame; a mounting bracket is provided below the triangular block; the side of the triangular block closest to the first electric push rod is rotated on the mounting bracket via a rotating rod; by setting the arc-shaped cylindrical cavity, this invention can avoid optical path difference shift and destructive interference of reflected signals caused by surface deformation, ensure the stability of the antenna main lobe gain, and reduce the risk of signal-to-noise ratio degradation and signal loss.

Description

Technical Field

[0001] This invention belongs to the field of satellite antenna technology, specifically a satellite signal receiver. Background Technology

[0002] With the rapid development and widespread adoption of satellite communication technology, satellite antennas, as the core front-end equipment of satellite signal transceiver links, have been widely used in many civilian and professional fields, including broadcast television program reception, broadband communication access in remote areas, emergency command communication, meteorological remote sensing data reception, and aerospace telemetry and control. Their core function is to achieve directional transmission, focusing, and preprocessing of electromagnetic wave signals between space satellites and ground terminals. The performance of the antenna directly determines the signal reception sensitivity, transmission stability, and communication reliability of the entire satellite communication link.

[0003] Among various ground-based satellite antennas, parabolic antennas have become the most widely used antenna type in fixed ground receiving scenarios due to their core advantages of high gain, strong directivity, simple structure, controllable cost, and wide frequency band compatibility. A typical parabolic antenna mainly consists of six core parts: a parabolic reflector, a feed and LNB assembly, a feed support rod, an adjustment bracket, a fixed base, and a coaxial feed line. Among these, the surface shape accuracy of the parabolic reflector is the core indicator that determines the antenna gain, receiving performance, and anti-interference capability.

[0004] In actual long-term outdoor use, parabolic antennas are constantly exposed to complex natural environments, enduring various meteorological loads, external impacts, and long-term aging. This can easily cause irreversible deformation of the parabolic reflector. Under extreme meteorological loads, the continuous pressure of winter snow and the pulling and impact of strong winds during severe convective weather can cause local depressions or bulges on the parabolic reflector, directly destroying the original standard parabolic curvature. When subjected to impacts such as flying stones, falling objects from high altitudes, or human-caused bumps during installation and maintenance, local pits and bulges will be formed directly on the surface of the parabolic reflector, causing permanent damage to the surface accuracy.

[0005] The aforementioned surface deformation fundamentally destroys the signal focusing capability of the parabolic surface: the optical path difference of the reflected signal in the deformed area is shifted, and when it reaches the focal point, it causes destructive interference with the normal signal, resulting in a sharp drop in the antenna main lobe gain and a significant decrease in the signal-to-noise ratio; at the same time, the surface distortion will deteriorate the antenna pattern, and the side lobes and grating lobes will be abnormally raised, significantly weakening the ability to resist co-channel interference from neighboring stars. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a satellite signal receiver. By setting an arc-shaped cylindrical chamber, it can avoid optical path difference shift and destructive interference of reflected signals caused by surface deformation, ensure the stability of the antenna main lobe gain, and reduce the risk of signal-to-noise ratio degradation and signal loss. The specific structure is as follows.

[0007] A satellite signal receiver includes a satellite antenna; the satellite antenna includes a parabolic reflector; the parabolic reflector has an arc-shaped cavity on its back, and the parabolic reflector is fixed on the arc-shaped cavity;

[0008] The parabolic reflector is spaced apart from the bottom of the arc-shaped silo;

[0009] The arc-shaped cylindrical chamber and the parabolic reflector rotate together in the middle of a rotating cylinder; a first arc plate is fixed on the outer ring surface of the rotating cylinder, and the first arc plate is located inside the arc-shaped cylindrical chamber and is in contact with the parabolic reflector, and the two corners where the first arc plate is in contact with the parabolic reflector are rounded.

[0010] A sliding column slides inside the rotating cylinder. In the initial state, the top of the sliding column is flush with the inner ring surface of the parabolic reflector. A driven tooth is fixed on the inner ring of the rotating cylinder. A drive groove is opened on the outer ring surface of the sliding column, and the driven tooth slides in the drive groove.

[0011] A rectangular groove is provided inside the sliding column; a second arc plate rotates within the rectangular groove via a torsion spring and a rotating shaft, and the radius of the second arc plate is the same as the inner radius of the parabolic reflector.

[0012] A rectangular frame is fixed to the back of the arc-shaped cylindrical compartment; first electric actuators are installed on both sides of the rectangular frame, and mounting plates are fixed to the extension rods of the first electric actuators; a motor is fixed to the mounting plate; the output shaft of the motor is fixedly connected to the sliding column.

[0013] A triangular block is fixed at the bottom of the rectangular frame; a mounting bracket is provided below the triangular block; the side of the triangular block closest to the first electric push rod is rotated on the mounting bracket via a rotating rod;

[0014] The mounting bracket has a second electric actuator installed at its bottom, and the other side of the second electric actuator is rotatably mounted on the side of the triangular block away from the first electric actuator.

[0015] As a preferred embodiment of the present invention, multiple rings of counterweight tubes are installed inside the arc-shaped circular silo.

[0016] The first arc plate has evenly arranged U-shaped grooves, and the counterweight tube is located in the U-shaped grooves.

[0017] In a preferred embodiment of the present invention, reinforcing plates are fixed on both the upper and lower sides of the rectangular frame, and the reinforcing plates are fixed on the surface of the arc-shaped cylindrical container.

[0018] In a preferred embodiment of the present invention, a liquid tank is provided inside the reinforcing plate; each of the counterweight tubes is fixed with a connecting pipe facing the two liquid tanks.

[0019] Both of the aforementioned reinforcing plates are equipped with external connecting pipes.

[0020] In a preferred embodiment of the present invention, the connecting pipe located above the rectangular frame extends to the bottom of the liquid tank, and the liquid tank seals the bottom of the connecting pipe.

[0021] A sliding plate slides inside the liquid tank, and all connecting pipes pass through the sliding plate and are slidably connected to it; a liquid outlet is provided on the left side of the sliding plate on the connecting pipe.

[0022] A spring is connected to the left side of the skateboard.

[0023] As a preferred embodiment of the present invention, the outer side of the arc-shaped cylindrical chamber is provided with four limiting plates, that is, the upper half of the arc-shaped cylindrical chamber is provided with two limiting plates and the lower half is provided with two limiting plates; in the initial state, the adjacent limiting plates are separated from each other and do not block the parabolic reflector.

[0024] The limiting plate has an L-shaped cross-section; each limiting plate includes a first ring plate and a second ring plate; the first ring plate is located on the outside of the arc-shaped cylindrical compartment;

[0025] A gap is left between the second ring plate and the parabolic reflector, and this gap is the same as the thickness of the second arc plate; the side of the second arc plate facing the second ring plate is rounded.

[0026] Each of the first ring plates is fixed with a third electric actuator, and the third electric actuator is fixed on the arc-shaped cylindrical chamber.

[0027] In a preferred embodiment of the present invention, annular grooves are formed in the two upper limiting plates, and the cross-section of the annular grooves is L-shaped; the annular grooves are connected to an external air pump through an air pipe;

[0028] The inner rings of the two second ring plates on the two upper limiting plates are provided with evenly arranged spray holes, and the spray holes are connected to the annular grooves.

[0029] In a preferred embodiment of the present invention, the two first ring plates of the two lower limiting plates are provided with notches.

[0030] In a preferred embodiment of the present invention, the rectangular frame has multiple rotating rings inside.

[0031] The inner ring of the rotating ring is also fixed with a driven tooth.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. The satellite signal receiver of this invention, through the coordinated operation of a rotating cylinder, a first arc plate, a sliding column, a motor, and other structures, can automatically correct the surface shape of a parabolic reflector during periodic inspections. Because the corner where the first arc plate contacts the parabolic reflector is rounded, during rotational correction, the rounded corner structure can first contact the concave area and apply progressive squeezing force, causing the concave area to gradually flatten, avoiding secondary deformation caused by violent squeezing, and accurately restoring the ideal surface shape contour of the parabolic reflector. The correction process does not require disassembling the antenna and can be completed directly outdoors, effectively solving the problems of cumbersome correction and insufficient correction accuracy of existing parabolic antennas after deformation. It avoids optical path difference shift and destructive interference of reflected signals caused by surface deformation, ensures stable antenna main lobe gain, and reduces the risk of signal-to-noise ratio degradation and signal loss.

[0034] 2. In the satellite signal receiver described in this invention, during the surface correction process, a sliding column drives a second arc plate to rotate synchronously. Under the action of a torsion spring, the second arc plate is in close contact with the surface of the parabolic reflector. During the rotation, dust, impurities, and snow on the surface of the parabolic reflector can be effectively scraped away, avoiding problems such as decreased microwave reflection efficiency and increased diffuse reflection caused by impurities, thus fundamentally ensuring the signal focusing capability of the parabolic reflector. At the same time, during the correction process, the second electric push rod is controlled to retract, causing the opening of the parabolic reflector to face downwards. The scraped impurities can fall off naturally under the action of gravity, avoiding the recurrence of impurities affecting signal reception. No additional manual cleaning is required, reducing the workload of operation and maintenance.

[0035] 3. The satellite signal receiver of the present invention involves efficient heat exchange between the constant-temperature antifreeze and the parabolic reflector during circulation: when the temperature of the parabolic reflector is higher than the temperature of the antifreeze, the antifreeze absorbs and dissipates the heat from the parabolic reflector, achieving temperature control; when the temperature of the parabolic reflector is lower than the temperature of the antifreeze, the antifreeze releases heat to the parabolic reflector, achieving temperature compensation; thereby effectively reducing temperature fluctuations of the parabolic reflector during use, achieving uniform temperature control of the parabolic reflector, avoiding deformation and structural damage caused by thermal expansion and contraction due to excessive day-night temperature differences, and ensuring the surface accuracy and structural integrity of the parabolic reflector. Attached Figure Description

[0036] The invention will now be further described with reference to the accompanying drawings.

[0037] Figure 1 This is a state diagram of the satellite antenna of this invention during use;

[0038] Figure 2 This is a state diagram from another perspective when the satellite antenna of this invention is in use;

[0039] Figure 3 This is a state diagram of the satellite antenna during calibration according to the present invention;

[0040] Figure 4 This is a structural diagram of the parabolic reflector, the arc-shaped cylindrical chamber, and the limiting plate in this invention;

[0041] Figure 5 This is a structural diagram of the rectangular frame and sliding column in this invention;

[0042] Figure 6 This is a top view of the satellite antenna during calibration according to the present invention;

[0043] Figure 7 This is the present invention. Figure 6 Sectional view at point AA;

[0044] Figure 8 This is the present invention. Figure 7 Enlarged view of a section at point B in the middle;

[0045] Figure 9 This is the present invention. Figure 7 Enlarged view of a section at point C;

[0046] Figure 10 This is the present invention. Figure 7 Enlarged view of a section at point D;

[0047] Figure 11 This is the present invention. Figure 7 Enlarged view of a section at point E in the middle;

[0048] In the diagram: 1. Parabolic reflector; 11. Arc-shaped hopper; 12. Rotating cylinder; 13. Driven gear; 14. First arc plate; 15. U-shaped groove; 2. Sliding column; 21. Drive groove; 22. Rectangular groove; 23. Second arc plate; 3. Rectangular frame; 31. First electric actuator; 32. Mounting plate; 33. Triangular block; 34. Mounting bracket; 35. Second electric actuator; 36. Rotary ring; 4. Counterweight tube; 41. Reinforcing plate; 42. Connecting pipe; 421. Liquid outlet; 43. External pipe; 44. Slide plate; 5. Limiting plate; 51. First ring plate; 52. Second ring plate; 53. Third electric actuator; 54. Annular groove; 55. Spray hole; 56. Notched groove. Detailed Implementation

[0049] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0050] like Figures 1 to 11As shown, the satellite signal receiver of the present invention includes a satellite antenna; the satellite antenna includes a parabolic reflector 1; the parabolic reflector 1 has an arc-shaped cylindrical chamber 11 on its back, and the parabolic reflector 1 is fixed on the arc-shaped cylindrical chamber 11; the parabolic reflector 1 and the bottom of the arc-shaped cylindrical chamber 11 are separated by a distance; a rotating cylinder 12 rotates together in the middle of the arc-shaped cylindrical chamber 11 and the parabolic reflector 1; a first arc plate 14 is fixed on the outer ring surface of the rotating cylinder 12, and the first arc plate 14 is located inside the arc-shaped cylindrical chamber 11 and is in contact with the parabolic reflector 1, and the two corners where the first arc plate 14 is in contact with the parabolic reflector 1 are rounded; a sliding column 2 slides inside the rotating cylinder 12, and in the initial state, the top of the sliding column 2 is flush with the inner ring surface of the parabolic reflector 1; a driven tooth 13 is fixed on the inner ring of the rotating cylinder 12; a driving groove 21 is opened on the outer ring surface of the sliding column 2, and the driven tooth 13 slides in the driving groove 21;

[0051] A rectangular groove 22 is provided inside the sliding column 2; a second arc plate 23 is rotatably mounted inside the rectangular groove 22 via a torsion spring and a rotating shaft, and the radius of the second arc plate 23 is the same as the inner radius of the parabolic reflector 1.

[0052] A rectangular frame 3 is fixed to the back of the arc-shaped cylindrical compartment 11; a first electric push rod 31 is installed on both sides of the rectangular frame 3, and a mounting plate 32 is fixed on the extension rod of the first electric push rod 31; a motor is fixed on the mounting plate 32; the output shaft of the motor is fixedly connected to the slide column 2.

[0053] A triangular block 33 is fixed at the bottom of the rectangular frame 3; a mounting bracket 34 is provided below the triangular block 33; the side of the triangular block 33 closest to the first electric push rod 31 is rotated on the mounting bracket 34 by a rotating rod;

[0054] The mounting bracket 34 has a second electric actuator 35 mounted on its bottom, and the other side of the second electric actuator 35 is rotatably mounted on the side of the triangular block 33 away from the first electric actuator 31.

[0055] When the satellite antenna is in use, the extension of the second electric push rod 35 is controlled to push the triangular block 33 to rotate, thereby causing the rectangular frame 3, the arc-shaped cylinder 11 and the parabolic reflector 1 to rotate upward to a suitable angle. Then the second electric push rod 35 stops rotating. Since the sliding column 2 is flush with the inner surface of the parabolic reflector 1 in the initial state, it will not affect the normal use of the parabolic reflector 1. Once the satellite antenna is completed, it can be put into operation.

[0056] Specifically, during the operation of the satellite antenna, a fixed inspection cycle is set to perform periodic status checks on the antenna. The core inspection contents include: the overall structural integrity of the satellite antenna and the surface accuracy of the parabolic reflector 1, with a focus on confirming whether there is structural damage or surface deformation such as local protrusions or depressions. At the same time, the parabolic reflector 1 needs to be corrected during each inspection. During the correction, the first electric actuator 31 is controlled to retract. The retracted first electric actuator 31 will pull the mounting plate 32 to gradually move towards one side of the rectangular frame 3, and at the same time, it will be transmitted through the output shaft of the motor. Pushing the sliding column 2 to move it will cause the sliding column 2 to gradually extend out of the rotating cylinder 12, and the drive groove 21 on the sliding column 2 will move along the driven tooth 13 on the inner ring of the rotating cylinder 12; at the same time, the sliding column 2 will drive the rectangular groove 22 and the second arc plate 23 inside the rectangular groove 22 to gradually pass through the rotating cylinder 12, and the second arc plate 23 will gradually rotate under the action of the torsion spring; when the mounting plate 32 is attached to the rectangular frame 3, the mounting plate 32 will no longer move, and the second arc plate 23 will be completely attached to the parabolic reflector 1, and then the parabolic reflector 1 can be corrected.

[0057] More specifically, since the parabolic reflector 1 has an arc-shaped cylindrical chamber 11 fixed on its back, the arc-shaped cylindrical chamber 11 can provide rigid support for the parabolic reflector. When the parabolic reflector 1 is pulled by external wind or pressed by snow, the arc-shaped cylindrical chamber 11 will protect and support the parabolic reflector 1, which can prevent the parabolic reflector 1 from warping as a whole due to being pulled and pressed. At the same time, it can prevent external objects from hitting the parabolic reflector 1 from its back, thus preventing the parabolic reflector 1 from bulging.

[0058] When calibrating the parabolic reflector 1, the control motor drives the sliding column 2 and the second arc plate 23 to rotate. The rotating sliding column 2 drives the rotating cylinder 12 to rotate through the drive groove 21 and the driven tooth 13. During the rotation of the rotating cylinder 12, the first arc plate 14 will rotate along the back of the parabolic reflector 1 within the arc-shaped cylinder 11. Due to the rounded corner design of the two corners of the first arc plate 14 that fits against the parabolic reflector 1, if there is a depression on the parabolic reflector 1, the rounded corner structure on the rotating first arc plate 14 will first contact the depression area. As the arc plate continues to rotate, the rounded corners apply a progressive squeezing force to the depression area, causing the depression area to gradually complete the leveling process, restoring the surface accuracy of the parabolic reflector 1, and reducing the impact of the depression.

[0059] Furthermore, during the rotation of the sliding column 2, the second arc plate 23 will also rotate. As the second arc plate 23 rotates, it will move along the surface of the parabolic reflector 1, thus scraping away impurities, dust, and snow from the surface of the parabolic reflector 1, preventing these impurities, dust, and snow from adhering to the surface and thus impairing the signal focusing capability of the parabolic reflector. During the calibration of the parabolic reflector 1, the second electric actuator 35 is controlled to retract, thereby pulling the triangular block 33 downwards, which in turn drives the rectangular frame 3, the arc-shaped cylinder 11, and the satellite antenna downwards, causing the opening of the parabolic reflector 1 to face downwards. Therefore, the impurities scraped away by the second arc plate 23 will fall downwards, preventing them from remaining on the parabolic reflector 1. After calibration, the first electric actuator 31 is controlled to return to its initial state, thereby pulling the sliding column 2 back to its initial state. Simultaneously, the second arc plate 23 will gradually rotate into the rectangular slot 22. After the sliding column 2 returns to its initial state, the second electric actuator 35 is controlled to return to its initial state, thus restoring the satellite antenna to its usable state.

[0060] Furthermore, by setting an arc-shaped cylindrical cavity 11 on the back of the parabolic reflector 1, the arc-shaped cylindrical cavity 11 forms a rigid support for the parabolic reflector 1, which can effectively resist the load impact brought by the heavy pressure of winter snow accumulation and the pulling of strong winds, and avoid irreversible deformation such as overall warping and local dents of the parabolic reflector 1. At the same time, the arc-shaped cylindrical cavity 11 can block external objects from hitting the parabolic reflector 1 from the back, reduce the local bulging caused by external forces such as flying stones and falling objects from high altitudes, protect the standard geometric curvature of the parabolic reflector 1 from the source, ensure its basic signal focusing performance, and extend the service life of the antenna.

[0061] Meanwhile, through the coordinated operation of the rotating cylinder 12, the first arc plate 14, the sliding column 2, the motor, and other structures, the parabolic reflector 1 can be automatically corrected in shape during periodic inspections. Since the corner where the first arc plate 14 fits against the parabolic reflector 1 is designed with rounded corners, during rotational correction, the rounded corner structure can first contact the concave area and apply progressive squeezing force, causing the concave area to gradually flatten, avoiding secondary deformation caused by violent squeezing, and accurately restoring the ideal surface profile of the parabolic reflector 1. The correction process does not require disassembling the antenna and can be completed directly outdoors, effectively solving the problems of cumbersome correction and insufficient correction accuracy of existing parabolic antennas after deformation. It avoids optical path difference shift and destructive interference of reflected signals caused by surface deformation, ensures stable antenna main lobe gain, and reduces the risk of signal-to-noise ratio decrease and signal lock-out.

[0062] Meanwhile, during the surface correction process, the sliding column 2 drives the second arc plate 23 to rotate synchronously. Under the action of the torsion spring, the second arc plate 23 is in close contact with the surface of the parabolic reflector 1. During the rotation, dust, impurities and snow on the surface of the parabolic reflector 1 can be effectively scraped off, avoiding problems such as reduced microwave reflection efficiency and increased diffuse reflection caused by impurities. This fundamentally ensures the signal focusing ability of the parabolic reflector 1. At the same time, during the correction process, the second electric push rod 35 is controlled to retract, causing the opening of the parabolic reflector 1 to face downward. The scraped impurities can fall off naturally under the action of gravity, avoiding the impurities remaining and affecting signal reception again. No additional manual cleaning is required, reducing the workload of operation and maintenance.

[0063] As an embodiment of the present invention; multiple rings of counterweight tubes 4 are installed inside the arc-shaped cylindrical bin 11; the first arc plate 14 is provided with uniformly arranged U-shaped grooves 15, and the counterweight tubes 4 are located inside the U-shaped grooves 15;

[0064] In this embodiment, reinforcing plates 41 are fixed on both the upper and lower sides of the rectangular frame 3, and the reinforcing plates 41 are fixed on the surface of the arc-shaped cylindrical hopper 11.

[0065] In this embodiment, a liquid tank is provided inside the reinforcing plate 41; each of the counterweight tubes 4 is fixed with a connecting pipe 42 facing the two liquid tanks; and an external connecting pipe 43 is installed on both reinforcing plates 41.

[0066] In this embodiment, the connecting pipe 42 located above the rectangular frame 3 extends to the bottom of the liquid tank, and the liquid tank will block the bottom of the connecting pipe 42.

[0067] A sliding plate 44 slides inside the liquid tank, and all connecting pipes 42 pass through the sliding plate 44 and are slidably connected to the sliding plate 44; a liquid outlet 421 is opened on the left side of the sliding plate 44 on the connecting pipe 42; a spring is connected to the left side of the sliding plate 44.

[0068] Because the arc-shaped cylindrical chamber 11 is equipped with a counterweight tube 4, the overall weight of the arc-shaped cylindrical chamber 11 and the parabolic reflector 1 can be increased, thereby improving the antenna's anti-overturning ability and operational stability in strong wind environments. Because the reinforcing plate 41 fixed on the rectangular frame 3 is fixed on the arc-shaped cylindrical chamber 11, the stability of the arc-shaped cylindrical chamber 11 and the parabolic reflector 1 can be further enhanced. This makes it less likely for the parabolic reflector 1 to warp, deform, or resonate under external loads such as strong winds and snow accumulation, thereby ensuring the surface accuracy of the parabolic reflector 1 and the long-term operational reliability of the antenna. At the same time, because the first arc plate 14 is provided with a U-shaped groove 15, and the counterweight tube 4 slides in the U-shaped groove 15, when the first arc plate 14 rotates, it will rotate along the counterweight tube 4, and the counterweight tube 4 can also support the first arc plate 14.

[0069] When using the satellite antenna, for areas with large diurnal temperature differences, temperature-controlled antifreeze can be selectively introduced into the liquid tank within the upper reinforcing plate 41 through the upper external pipe 43. After entering the liquid tank, the antifreeze flows through the connecting pipe 42 into the counterweight pipe 4, then flows downwards within the counterweight pipe 4, finally flowing into the bottom reinforcing plate 41 through the bottom connecting pipe. It then continues to circulate through the external pipe 43. Because the antifreeze is temperature-controlled, it undergoes efficient heat exchange with the parabolic reflector 1 during circulation. When the temperature is higher than the antifreeze temperature, the antifreeze absorbs and dissipates the heat from the parabolic reflector 1, achieving temperature control. When the temperature of the parabolic reflector 1 is lower than the antifreeze temperature, the antifreeze releases heat to the parabolic reflector 1, achieving temperature compensation. This effectively reduces the temperature fluctuation of the parabolic reflector 1 during use, achieves uniform temperature control of the parabolic reflector 1, avoids deformation and structural damage caused by thermal expansion and contraction due to excessive day-night temperature differences, and ensures the surface accuracy and structural integrity of the parabolic reflector 1.

[0070] More specifically, since the upper reinforcing plate 41 has a sliding plate 44 in the liquid tank, and after the antifreeze enters the liquid tank, the antifreeze will gradually fill the space on the right side of the sliding plate 44. When the space on the right side of the sliding plate 44 is completely filled, it will push the sliding plate 44 to move to the left along the connecting pipe 42, and the antifreeze on the right side of the sliding plate 44 will be full. During the movement of the sliding plate 44, the liquid outlet 421 will gradually move to the right side of the sliding plate 44. When the liquid outlet 421 moves to the right side of the sliding plate 44, the antifreeze will flow into different counterweight pipes 4 through the connecting pipe 42 at the same time. This can avoid the time difference when the antifreeze flows into different counterweight pipes 4, which would cause a temperature difference between different counterweight pipes 4.

[0071] As an embodiment of the present invention, four limiting plates 5 are provided on the outer side of the arc-shaped cylindrical compartment 11, that is, two limiting plates 5 are provided on the upper half of the arc-shaped cylindrical compartment 11 and two limiting plates 5 are provided on the lower half; in the initial state, adjacent limiting plates 5 are separated from each other and do not block the parabolic reflector 1; the cross-section of the limiting plate 5 is L-shaped; each limiting plate 5 includes a first ring plate 51 and a second ring plate 52; the first ring plate 51 is located on the outer side of the arc-shaped cylindrical compartment 11;

[0072] A gap is left between the second ring plate 52 and the parabolic reflector 1, and this gap is the same as the thickness of the second arc plate 23; the side of the second arc plate 23 facing the second ring plate 52 is rounded.

[0073] Each of the first ring plates 51 is fixed with a third electric actuator 53, and the third electric actuator 53 is fixed on the arc-shaped cylindrical chamber 11.

[0074] In this embodiment, annular grooves 54 are formed in the two upper limiting plates 5, and the cross-section of the annular grooves 54 is L-shaped; the annular grooves 54 are connected to an external air pump through an air pipe; the inner rings of the two second ring plates 52 on the two upper limiting plates 5 are provided with uniformly arranged spray holes 55, and the spray holes 55 are connected to the annular grooves 54.

[0075] In this embodiment, the two first ring plates 51 of the two lower limiting plates 5 are provided with notches 56.

[0076] After the second arc plate 23 is in contact with the surface of the parabolic reflector 1, the third electric actuator 53 is controlled to retract, thereby driving the four limiting plates 5 to move closer to each other until the four limiting plates 5 are in contact with each other to form a ring. During the process of the four limiting plates 5 moving closer to each other, the second ring plate 52 will gradually move closer to the second arc plate 23 and limit the second arc plate 23 between the second ring plate 52 and the parabolic reflector 1, thereby limiting the second arc plate 23. Then the second arc plate 23 will rotate between the first ring plate 51 and the parabolic reflector 1. During this process, it can prevent the second arc plate 23 from jumping during rotation, thus preventing the stubborn impurities from being removed.

[0077] Specifically, since the two upper limiting plates 5 have annular grooves 54, and the annular grooves 54 are connected to an external air pump, gas is introduced into the annular grooves 54 during the rotation of the first arc plate 14. The gas in the annular grooves 54 is ejected through evenly arranged nozzles 55. The ejected gas can blow the dust scraped off the surface of the parabolic reflector 1 downwards and fall into the notches 56 on the two lower limiting plates 5. At the same time, during the air jetting process of the nozzles 55, the rotating first arc plate 14 can be blown away, thereby blowing off the dust adhering to the second arc plate 23, preventing the dust from re-adhering to the surface of the parabolic reflector 1 and causing secondary pollution, significantly improving the cleaning effect, ensuring the specular reflection performance of the parabolic reflector 1, and ensuring the signal focusing accuracy. After the second arc plate 23 is cleaned, the third electric push rod 53 is controlled to push the limiting plates 5 away from each other, thereby no longer limiting the second arc plate 23. Then, the sliding column 2 is controlled to return to its initial state.

[0078] As an embodiment of the present invention, the rectangular frame 3 has multiple rotating rings 36 inside; the inner ring of each rotating ring 36 is also fixed with a driven tooth 13; since the rectangular frame 3 has multiple rotating rings 36 inside, when the sliding column 2 moves, the driving groove 21 on the sliding column 2 will move along the driven tooth 13 of the inner ring of the rotating ring 36. When the sliding column 2 extends out of the rotating cylinder 12, the multiple rotating rings 36 can support the sliding column 2. During the rotation of the sliding column 2, the driving groove 21 and the driven tooth 13 will drive the rotating ring 36 to rotate, thereby supporting the sliding column 2 during the rotation and preventing the sliding column 2 from jumping during the rotation.

[0079] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0080] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A satellite signal receiver, comprising a satellite antenna; said satellite antenna comprising a parabolic reflector (1); characterized in that, The parabolic reflector (1) has an arc-shaped cylindrical chamber (11) on its back, and the parabolic reflector (1) is fixed on the arc-shaped cylindrical chamber (11); The arc-shaped cylindrical chamber (11) and the parabolic reflector (1) rotate together in the middle of a rotating cylinder (12); the outer ring surface of the rotating cylinder (12) is fixed with a first arc plate (14), and the first arc plate (14) is located inside the arc-shaped cylindrical chamber (11) and is in contact with the parabolic reflector (1), and the two corners where the first arc plate (14) is in contact with the parabolic reflector (1) are rounded. A sliding column (2) slides inside the rotating cylinder (12). In the initial state, the top of the sliding column (2) is flush with the inner ring surface of the parabolic reflector (1). A driven tooth (13) is fixed on the inner ring of the rotating cylinder (12). A drive groove (21) is opened on the outer ring surface of the sliding column (2). A rectangular groove (22) is provided inside the sliding column (2); a second arc plate (23) is rotatably mounted inside the rectangular groove (22) via a torsion spring and a rotating shaft; A rectangular frame (3) is fixed to the back of the arc-shaped cylindrical container (11); a first electric push rod (31) is installed on both sides of the rectangular frame (3), and a mounting plate (32) is fixed on the extension rod of the first electric push rod (31); a motor is fixed on the mounting plate (32); the output shaft of the motor is fixedly connected to the slide column (2); A triangular block (33) is fixed at the bottom of the rectangular frame (3); a mounting bracket (34) is provided below the triangular block (33); the side of the triangular block (33) near the first electric push rod (31) is rotated on the mounting bracket (34) by a rotating rod; The mounting bracket (34) has a second electric push rod (35) installed at the bottom, and the other side of the second electric push rod (35) is rotatably mounted on the side of the triangular block (33) away from the first electric push rod (31).

2. The satellite signal receiver according to claim 1, characterized in that: The arc-shaped cylindrical silo (11) is equipped with multiple rings of counterweight pipes (4); The first arc plate (14) has U-shaped grooves (15) evenly arranged, and the counterweight tube (4) is located in the U-shaped groove (15).

3. The satellite signal receiver according to claim 2, characterized in that: The rectangular frame (3) is fixed with reinforcing plates (41) on both the upper and lower sides, and the reinforcing plates (41) are fixed on the surface of the arc-shaped cylindrical silo (11).

4. The satellite signal receiver according to claim 3, characterized in that: The reinforcing plate (41) has a liquid tank inside; each of the counterweight tubes (4) is fixed with a connecting pipe (42) facing the two liquid tanks; Both of the reinforcing plates (41) are equipped with external connecting pipes (43).

5. The satellite signal receiver according to claim 4, characterized in that: The connecting pipe (42) located above the rectangular frame (3) extends to the bottom of the liquid tank, and the liquid tank will block the bottom of the connecting pipe (42); A sliding plate (44) slides inside the liquid tank, and all connecting pipes (42) pass through the sliding plate (44) and are slidably connected to the sliding plate (44); a liquid outlet (421) is opened on the left side of the sliding plate (44) on the connecting pipe (42); A spring is connected to the left side of the skateboard (44).

6. The satellite signal receiver according to claim 2, characterized in that: The arc-shaped cylindrical container (11) is provided with four limiting plates (5) on its outer side, namely, the upper half of the arc-shaped cylindrical container (11) is provided with two limiting plates (5) and the lower half is provided with two limiting plates (5); in the initial state, the adjacent limiting plates (5) are separated from each other and do not block the parabolic reflector (1). The limiting plate (5) has an L-shaped cross-section; each limiting plate (5) includes a first ring plate (51) and a second ring plate (52); the first ring plate (51) is located outside the arc-shaped cylindrical container (11); A gap is left between the second ring plate (52) and the parabolic reflector (1), and the gap is the same as the thickness of the second arc plate (23); the second arc plate (23) has a rounded corner design on the side facing the second ring plate (52); Each of the first ring plates (51) is fixed with a third electric actuator (53), and the third electric actuator (53) is fixed on the arc-shaped cylindrical container (11).

7. The satellite signal receiver according to claim 6, characterized in that: Annular grooves (54) are provided in the two upper limiting plates (5), and the cross-section of the annular grooves (54) is L-shaped; the annular grooves (54) are connected to an external air pump through an air pipe; The inner rings of the two second ring plates (52) on the two upper limiting plates (5) are provided with uniformly arranged spray holes (55), and the spray holes (55) are connected to the annular groove (54).

8. The satellite signal receiver according to claim 7, characterized in that: The two first ring plates (51) of the two limiting plates (5) located below are provided with notches (56).

9. The satellite signal receiver according to claim 8, characterized in that: The rectangular frame (3) has multiple rotating rings (36) inside; The inner ring of the rotating ring (36) is also fixed with a driven tooth (13).

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