Satellite antenna with precise servo lifting and rotating mechanism

Abstract

The application discloses a satellite antenna with a precise servo lifting rotating mechanism and relates to the field of satellite communication.The satellite antenna comprises a base, a rotating motor fixed in the base, a rotating platform arranged on the base in a rotating mode through bearings and fixedly connected with the output end of the rotating motor at the bottom, a lifting cylinder body embedded and fixed at the shaft position of the rotating platform, a bearing seat fixed at the output end of the lifting cylinder body, a satellite antenna hinged to the bearing seat, a pitching cylinder body hingedly connected with one end of the bearing seat and the other end of the satellite antenna, a plurality of self-locking assemblies uniformly arranged at the upper end surface of the rotating platform at one end and detachably arranged at the side wall of the bearing seat at the other end, and a supporting assembly slidably sleeved on the outer wall of the base.

Description

Technical Field

[0001] This invention relates to the field of satellite communications, specifically to a satellite antenna with a precise servo lifting and rotating mechanism. Background Technology

[0002] As a key ground device in satellite communication systems, satellite antennas primarily function to reflect weak signals from satellites to the feedhorn and LNB, while minimizing noise. The quality of signal reception directly depends on the antenna's pointing accuracy towards the satellite. With the rapid deployment of low-Earth orbit satellite constellations and the development of satellite communication towards broadband and mobility, ground satellite antennas need to possess rapid and precise multi-degree-of-freedom attitude adjustment capabilities to meet the signal reception requirements of dynamic satellite alignment and complex environments.

[0003] Existing satellite antenna attitude adjustment mechanisms typically employ a scheme that drives three independent degrees of freedom: lifting, rotation, and pitch. The rotation mechanism primarily uses gear transmission, which inevitably results in backlash during gear meshing. Furthermore, the transmission chain is relatively long, and the cumulative backlash effect significantly reduces the positioning accuracy of azimuth adjustment. In contrast, rotation mechanisms using servo motor direct drive often experience rotational difficulties when the load is heavy. The vertical load's gravity also puts prolonged pressure on the turntable's bearings, which can easily cause damage.

[0004] To address the above problems, this invention provides a satellite antenna with a precise servo lifting and rotating mechanism to solve these issues. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a satellite antenna with a precise servo lifting and rotating mechanism, comprising:

[0006] The base has a rotating motor fixed inside it, and a hydraulic chamber is opened at the bottom of the base;

[0007] The turntable is rotatably mounted on the base using bearings, and its bottom is fixedly connected to the output end of the rotary motor.

[0008] The lifting cylinder is embedded and fixed at the axis of the turntable;

[0009] The support base is fixed to the output end of the lifting cylinder.

[0010] The satellite antenna is hinged to the support.

[0011] The pitch cylinder is hinged at one end to the support base and at the other end to the satellite antenna;

[0012] The self-locking components are configured in multiples, with one end evenly distributed around the upper surface of the turntable, and the other end detachably mounted on the side wall of the support.

[0013] The support assembly is slidably fitted onto the outer wall of the base.

[0014] Furthermore, preferably, a sliding groove is provided on the upper end surface of the turntable at the position corresponding to the self-locking component, and a plurality of V-shaped grooves are continuously provided in the sliding groove. A connecting surface is provided at the connection point of the plurality of V-shaped grooves, and the sliding grooves are all opened along the radial direction of the turntable. A raceway is provided on the lower end surface of the turntable at the position corresponding to the support component, and the raceway is a ring track.

[0015] Furthermore, preferably, the self-locking assembly includes connecting rods, and two connecting rods are configured to be connected by an adjusting rod thread. One connecting rod is hinged to the side wall of the bearing seat, and the other connecting rod is hinged to a limiting assembly, which is slidably disposed in the sliding groove.

[0016] Further, preferably, the limiting component includes:

[0017] The limiting seat is slidably disposed in the sliding groove, and its upper end is hinged to one of the connecting rods, and two sliding chambers are symmetrically opened in the limiting seat;

[0018] An electromagnet is fixed inside the sliding chamber at the upper position;

[0019] The limiting block is configured to slide up and down within the sliding chamber using multiple guide posts, and each of the multiple guide posts is fitted with a pressing spring.

[0020] A magnetic plate is fixed to the upper end face of the limiting block;

[0021] Two sliding plates are configured to slide symmetrically within the sliding chamber;

[0022] The roller is slidably disposed between the two sliding plates using a slider, and its axis is arranged parallel to the length direction of the V-groove;

[0023] Pull plates are symmetrically fixed on both sides of the limiting block, and are slidably connected to the two sliding plates by pull columns respectively.

[0024] Furthermore, preferably, the sliding plate has a groove, a return spring is provided between the slider and the groove, and the return spring is located on the side close to the support seat;

[0025] The limiting block has a wedge-shaped surface on the side near the bearing seat, which is used to limit and push the roller.

[0026] Furthermore, preferably, the electromagnet is in the open state when the lifting cylinder is running. At this time, the electromagnet attracts the magnetic plate, and when the magnetic plate is in the attracted state, the lower end of the roller is flush with the lower end surface of the limiting seat.

[0027] Further, preferably, the support component includes:

[0028] The adjusting ring is slidably disposed within the hydraulic chamber and is driven to move up and down by hydraulic oil.

[0029] A pressure ring is fixed to the outer wall of the base;

[0030] A support ring is fixed to the upper end face of the adjusting ring.

[0031] Furthermore, preferably, the inner wall of the adjusting ring has a stepped surface, which corresponds to the lower end face of the pressure ring, and pressure sensors are provided on both the upper and lower end faces of the pressure ring, and the bottom of the support ring corresponds to the upper end face of the pressure ring.

[0032] Furthermore, preferably, the upper end face of the support ring is provided with a plurality of steel balls, the plurality of steel balls corresponding to the raceway, and the upper and lower end faces of the pressure ring have gaps with the support ring and the stepped surface.

[0033] Compared with the prior art, the present invention provides a satellite antenna with a precise servo lifting and rotating mechanism, which has the following beneficial effects:

[0034] 1. Distributed load: The self-locking component transfers the gravity of the satellite antenna to the edge of the turntable, preventing the lifting cylinder and bearings from bearing excessive concentrated load. The support component actively bears the main force in the vertical direction, greatly extending the bearing life.

[0035] 2. Power-off self-locking: The electromagnet is normally locked when power is off, and unlocks when power is applied during lifting or lowering. It immediately locks mechanically after an accidental power failure to prevent sudden changes in the attitude of the satellite antenna.

[0036] 3. Adaptive support: The pressure sensor controls the support force in a closed loop, ensuring that the turntable is always in the optimal stress state, with low rotational resistance and no risk of overload. Furthermore, multiple self-locking components are evenly distributed around the circumference, and after locking, the support seat is rigidly connected to the turntable, resisting external disturbances such as wind load and inertial force, and ensuring stable pointing to the star. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the self-locking component structure of the present invention;

[0039] Figure 3This is a cross-sectional view of the limiting component of the present invention;

[0040] Figure 4 This is a schematic diagram of the first state of the limiting component of the present invention;

[0041] Figure 5 This is a schematic diagram of the second state of the limiting component of the present invention;

[0042] Figure 6 This is a schematic diagram of the third state of the limiting component of the present invention;

[0043] Figure 7 This is a schematic diagram of the fourth state of the limiting component of the present invention;

[0044] Figure 8 This is a schematic diagram of the support component structure of the present invention;

[0045] In the diagram: 1. Base; 2. Turntable; 3. Lifting cylinder; 4. Bearing seat; 5. Satellite antenna; 6. Pitch cylinder; 7. Self-locking assembly; 8. Support assembly; 11. Hydraulic chamber; 12. Bearing; 21. Sliding groove; 22. V-groove; 221. Connecting surface; 23. Raceway; 71. Connecting rod; 72. Adjusting rod; 73. Limiting assembly; 731. Limiting seat; 732. Sliding chamber; 733. Electromagnet; 734. Limiting block; 735. Magnetic plate; 736. Sliding plate; 737. Roller; 738. Pulling plate; 739. Slider; 740. Return spring; 741. Wedge surface; 81. Adjusting ring; 82. Pressure ring; 83. Support ring. Detailed Implementation

[0046] Reference Figures 1-8 This invention provides a technical solution: a satellite antenna with a precise servo lifting and rotating mechanism, comprising:

[0047] The base 1 has a rotating motor fixed inside it, and a hydraulic chamber 11 is provided at the bottom of the base 1;

[0048] Turntable 2 is rotatably mounted on base 1 using bearing 12, and its bottom is fixedly connected to the output end of the rotary motor;

[0049] The lifting cylinder 3 is embedded and fixed at the axial position of the turntable 2;

[0050] The support seat 4 is fixed to the output end of the lifting cylinder 3;

[0051] Satellite antenna 5 is hinged to the support 4;

[0052] The pitch cylinder 6 is hinged at one end to the bearing seat 4 and at the other end to the satellite antenna 5;

[0053] The self-locking components 7 are configured in multiple ways, with one end evenly distributed around the upper surface of the turntable 2, and the other end detachably mounted on the side wall of the support seat 4.

[0054] The support component 8 is slidably fitted onto the outer wall of the base 1.

[0055] The system achieves independent adjustment of rotation, lifting, and pitch through turntable 2, lifting cylinder 3, and pitch cylinder 6. The self-locking component 7 locks and disperses the gravity of the satellite antenna 5 to the edge of turntable 2 when lifting is completed or in case of an accident. The support component 8 provides adaptive support in the vertical direction, which together improves the load-bearing capacity and satellite alignment accuracy.

[0056] In this embodiment, a sliding groove 21 is provided on the upper end surface of the turntable 2 at the position corresponding to the self-locking component 7. A plurality of V-shaped grooves 22 are continuously provided in the sliding groove 21. A connecting surface 221 is provided at the connection of the plurality of V-shaped grooves 22. The sliding grooves 21 are all opened along the radial direction of the turntable 2. A raceway 23 is provided on the lower end surface of the turntable 2 at the position corresponding to the support component 8. The raceway 23 is a ring track.

[0057] In other words, the sliding groove 21 provides radial movement guidance for the self-locking assembly 7, enabling the self-locking assembly 7 to transfer gravity to the turntable 2 and achieve load edge diffusion. The V-groove 22 achieves multi-position mechanical locking, and the annular raceway cooperates with the support assembly 8 to reduce rotational friction.

[0058] Preferably, the self-locking assembly 7 includes a connecting rod 71, and two connecting rods 71 ​​are configured to be connected by an adjusting rod 72. One connecting rod 71 is hinged to the side wall of the bearing seat 4, and the other connecting rod 71 is hinged to a limiting assembly 73. The limiting assembly 73 is slidably disposed in the sliding groove 21.

[0059] It should be noted that when dealing with satellite antennas 5 of different sizes, the total length can be changed by rotating the adjusting rod 72. When the adjusting rod 72 rotates, the two connecting rods 71 ​​move away from or closer to each other through the threads, thus adapting to different sizes. The limiting component 73 in the sliding groove 21 serves both as a guide and as a means to transfer the load of the bearing seat 4 to the pressure at the edge of the turntable 2, thereby distributing the weight.

[0060] In a preferred embodiment, the limiting component 73 includes:

[0061] The limiting seat 731 is slidably disposed in the sliding groove 21, and its upper end is hinged to one of the connecting rods 71. Two sliding chambers 732 are symmetrically opened in the limiting seat 731.

[0062] Electromagnet 733 is fixed inside the sliding chamber 732 at the upper position;

[0063] The limiting block 734 is arranged in the sliding chamber 732 by multiple guide posts sliding up and down, and each of the multiple guide posts is fitted with a pressing spring.

[0064] A magnetic plate 735 is fixed to the upper end face of the limiting block 734;

[0065] Two sliding plates 736 are configured to slide symmetrically within the sliding chamber 732;

[0066] The roller 737 is slidably disposed between the two sliding plates 736 by a slider 739, and its axis is arranged parallel to the length direction of the V-groove 22.

[0067] Pull plates 738 are symmetrically fixed on both sides of the limiting block 734, and are slidably connected to the two sliding plates 736 by pull columns respectively.

[0068] Preferably, the sliding plate 736 has a sliding groove, and a return spring 740 is provided between the slider and the sliding groove, and the return spring 740 is located on the side close to the support seat 4;

[0069] The limiting block 734 has a wedge-shaped surface 741 on the side near the bearing seat 4, and the wedge-shaped surface 741 is used to limit and push the roller 737.

[0070] It should be noted that the force provided by the return spring 740 is relatively small and insufficient to resist the left and right sliding of the sliding plate 736 and the roller 737 due to gravity.

[0071] When the limiting seat 731 slides to the first state, the roller 737 corresponds to a V-groove 22. When limiting, the electromagnet 733 is closed, and the sliding plate 736 slides down by gravity, so that the roller 737 enters the V-groove 22. Then, the pressing spring pushes the wedge-shaped surface 741 of the limiting block 734 to press and limit the roller 737, thus completing the self-locking.

[0072] When the limiting seat 731 slides to the second state, the axis of the roller 737 is located on the left side of the connecting surface 221. At this time, the roller 737 rolls to the left along the inner wall of the V-groove 221, stretching the return spring 740 and thus entering the V-groove 221. Then, the pressing spring pushes the wedge-shaped surface 741 of the limiting block 734 to press and limit the roller 737, thus completing the self-locking.

[0073] When the limiting seat 731 slides to the third state, the axis of the roller 737 is located on the right side of the connecting surface 221. At this time, the roller 737 rolls to the right along the inner wall of the V-groove 221, compressing the return spring 740 and thus entering the V-groove 221. Then, the pressing spring pushes the wedge-shaped surface 741 of the limiting block 734 to press and limit the roller 737, thus completing the self-locking.

[0074] When the limit seat 731 slides to the fourth state, the axis of the roller 737 is located at the center of the connecting surface 221. The roller 737 cannot slide left or right due to gravity. At this time, the pressing spring pushes the wedge-shaped surface 741 of the limit block 734 to press the roller 737, causing it to slide to the right and enter the V-shaped groove 221 on the right side, thus completing the self-locking.

[0075] In other words, the cooperation between the roller 737 and the limiting block 734 enables the roller 737 to enter the V-groove 221 for self-locking when the limiting seat 731 slides to any position. The roller 737 and the V-groove 221 can improve the self-locking strength, thereby resisting the horizontal thrust of a large load. Furthermore, the wedge surface 741 can prevent the horizontal thrust from causing the roller 737 to disengage from the V-groove 221, thus improving the self-locking strength.

[0076] It should be noted that when the limiting block 734 is attracted by the magnetic plate 735, the wedge-shaped surface 741 of the limiting block 734 does not contact the roller 737, and the pulling plate 738 is slidably connected to the pulling column. When the limiting block 734 is attracted by the magnetic plate 735, the pulling plate 738 drives the sliding plate 736 to slide upward through the pulling column. At this time, the pulling column and the pulling plate 738 cannot slide downward, so that the sliding plate 736 can slide upward synchronously.

[0077] In addition, the electromagnet 733 is in the open state when the lifting cylinder 3 is running. At this time, the electromagnet 733 attracts the magnetic plate 735, and when the magnetic plate 735 is in the attracted state, the lower end of the roller 737 is flush with the lower end surface of the limiting seat 731.

[0078] Among them, the limit component 73 automatically unlocks during the lifting process of the lifting cylinder 3 to avoid scratching. After the lifting stops or the power is accidentally cut off, the electromagnet 733 automatically closes, and the roller 737 immediately enters the V-groove 22 to achieve mechanical self-locking. No additional control signal is required, and the safety is high.

[0079] In a preferred embodiment, the support component 8 includes:

[0080] The adjusting ring 81 is slidably disposed within the hydraulic chamber 11 and is driven to move up and down by hydraulic oil;

[0081] Pressure ring 82 is fixed to the outer wall of the base 1;

[0082] The support ring 83 is fixed to the upper end face of the adjusting ring 81.

[0083] Specifically, the inner wall of the adjusting ring 81 is provided with a stepped surface, which corresponds to the lower end face of the pressure ring 82, and pressure sensors are provided on both the upper and lower end faces of the pressure ring 82. The bottom of the support ring 83 corresponds to the upper end face of the pressure ring 82.

[0084] In other words, hydraulic drive can provide a stable and adjustable large support force. After the support ring 83 is raised, it supports the bottom of the turntable 2, bears the main vertical weight of the satellite antenna 5 and the turntable 2, protects the bearing, and allows the support strength to be adjusted by hydraulic pressure. The pressure sensor on the upper end face of the pressure ring 82 detects the support force of the support ring 83 on the pressure ring 82 (i.e. the support force on the turntable 2), and the pressure sensor on the lower end face detects the reaction force of the step surface on the pressure ring 82 (i.e. the hydraulic driving force). The difference between the two can reflect whether the support is balanced in real time. By controlling the hydraulic pressure in a closed loop, the support strength can be adaptively adjusted to avoid excessive or insufficient support.

[0085] Preferably, the upper end face of the support ring 83 is provided with a plurality of steel balls, the plurality of steel balls corresponding to the raceway 23, and the upper and lower end faces of the pressure ring 82 have gaps with the support ring 83 and the stepped surface.

[0086] Among them, the steel ball and the raceway 23 form rolling friction to reduce rotational resistance. The reserved gap ensures that when the support is not activated (e.g., under low load), the support ring 83 does not contact the turntable 2, and the pressure ring 82 does not contact the stepped surface, reducing useless wear and energy loss. When support is needed, the hydraulically driven adjusting ring 81 eliminates the gap and achieves impact-free contact.

[0087] In practical implementation, when the satellite antenna 5 is working, the rotary motor inside the base 1 drives the turntable 2 to rotate in azimuth. The lifting cylinder 3 drives the support seat 4 and the satellite antenna 5 to move up and down. The pitch cylinder 6 adjusts the antenna pitch angle. During the lifting process, the electromagnet 733 inside the self-locking assembly 7 remains open, allowing the roller 737 to disengage from the V-groove 22, enabling the support seat 4 to move freely up and down. When the lifting reaches the target position or encounters an unexpected situation such as a power outage, the electromagnet 733 closes, and the roller 737 enters the V-groove 22, achieving mechanical self-locking. At the same time, the weight of the antenna borne by the support seat 4 is transmitted to the connecting rod 71 through the self-locking assembly 7, and then distributed to the edge of the turntable 2 through the limiting seat 731, preventing the load from being concentrated entirely on the lifting cylinder 3.

[0088] It should be noted that after the satellite antenna 5 is installed, the hydraulic system drives the adjusting ring 81 to rise, pushing the support ring 83 to support the roller track 23 at the bottom of the turntable 2. Multiple steel balls achieve low-friction rolling support. The pressure sensors on the upper and lower ends of the pressure ring 82 monitor the contact force in real time and feed it back to the hydraulic control unit, which automatically adjusts the support force so that the turntable 2 can still rotate smoothly when bearing the total weight of the antenna and additional loads.

[0089] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A satellite antenna with a precision servo lifting and rotating mechanism, characterized in that, include: The base (1) has a rotating motor fixed inside it, and a hydraulic chamber (11) is opened at the bottom of the base (1). The turntable (2) is rotatably mounted on the base (1) using a bearing (12), and its bottom is fixedly connected to the output end of the rotary motor; The lifting cylinder (3) is embedded and fixed at the axial position of the turntable (2); The support seat (4) is fixed at the output end of the lifting cylinder (3); The satellite antenna (5) is hinged to the support (4); The pitch cylinder (6) is hinged at one end to the bearing seat (4) and at the other end to the satellite antenna (5); The self-locking components (7) are configured in multiple ways, with one end evenly distributed around the upper surface of the turntable (2), and the other end detachably disposed on the side wall of the support seat (4). The support component (8) is slidably fitted onto the outer wall of the base (1).

2. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 1, characterized in that, The upper end face of the turntable (2) is provided with a sliding groove (21) corresponding to the position of the self-locking component (7). Multiple V-shaped grooves (22) are continuously provided in the sliding groove (21). A connecting surface (221) is provided at the connection of the multiple V-shaped grooves (22). The sliding grooves (21) are all opened along the radial direction of the turntable (2). The lower end face of the turntable (2) is provided with a raceway (23) corresponding to the position of the support component (8). The raceway (23) is a ring track.

3. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 2, characterized in that, The self-locking assembly (7) includes a connecting rod (71), which is configured as two. The two connecting rods (71) are connected by an adjusting rod (72) threaded together. One of the connecting rods (71) is hinged to the side wall of the bearing seat (4), and the other connecting rod (71) is hinged to a limiting assembly (73). The limiting assembly (73) is slidably disposed in the sliding groove (21).

4. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 3, characterized in that, The limiting component (73) includes: The limiting seat (731) is slidably disposed in the sliding groove (21), and its upper end is hinged to a connecting rod (71). Two sliding chambers (732) are symmetrically opened in the limiting seat (731). An electromagnet (733) is fixed inside the sliding chamber (732) at the upper position; The limiting block (734) is arranged in the sliding chamber (732) by multiple guide posts sliding up and down, and each of the multiple guide posts is fitted with a pressing spring; A magnetic plate (735) is fixed to the upper end face of the limiting block (734); Two sliding plates (736) are configured to slide symmetrically within the sliding chamber (732); The roller (737) is slidably disposed between the two sliding plates (736) by a slider (739), and its axis is arranged parallel to the length direction of the V-groove (22); Pull plates (738) are symmetrically fixed on both sides of the limiting block (734), and are slidably connected to the two sliding plates (736) by pull columns respectively.

5. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 4, characterized in that, The sliding plate (736) has a groove, and a return spring (740) is provided between the slider and the groove, and the return spring (740) is located on the side close to the support seat (4); The limiting block (734) has a wedge-shaped surface (741) on the side near the bearing seat (4), and the wedge-shaped surface (741) is used to limit and push the roller (737).

6. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 4, characterized in that, When the electromagnet (733) is in the open state during the operation of the lifting cylinder (3), the electromagnet (733) attracts the magnetic plate (735), and when the magnetic plate (735) is in the attracting state, the lower end of the roller (737) is flush with the lower end face of the limiting seat (731).

7. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 2, characterized in that, The support component (8) includes: The adjusting ring (81) is slidably disposed in the hydraulic chamber (11) and is driven to move up and down by hydraulic oil; Pressure ring (82) is fixed to the outer wall of the base (1); The support ring (83) is fixed to the upper end face of the adjusting ring (81).

8. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 7, characterized in that, The inner wall of the adjusting ring (81) is provided with a stepped surface, which corresponds to the lower end face of the pressure ring (82). Pressure sensors are provided on both the upper and lower end faces of the pressure ring (82). The bottom of the support ring (83) corresponds to the upper end face of the pressure ring (82).

9. A satellite antenna with a precision servo lifting and rotating mechanism according to claim 8, characterized in that, The upper end face of the support ring (83) is provided with a plurality of steel balls, which correspond to the raceway (23), and the upper and lower end faces of the pressure ring (82) have gaps with the support ring (83) and the stepped surface.

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