A communication satellite signal receiving antenna with adjustable signal receiving direction

Abstract

This application relates to a communication satellite signal receiving antenna with adjustable signal reception direction, belonging to the field of signal receiving antenna technology. It includes a signal receiving antenna body and an antenna angle adjustment base. The antenna angle adjustment base includes a base box, a column, an adjustment shaft, and an angle adjustment assembly. The column is vertically mounted above the base box, and the two are rotatably connected. The base box contains a rotation drive device for adjusting the azimuth angle of the signal receiving antenna body. The top of the column is rotatably connected to the adjustment shaft and the angle adjustment assembly, which are fixedly connected to the signal receiving antenna body. The angle adjustment assembly drives the adjustment of the elevation angle of the signal receiving antenna body. This application achieves continuous azimuth adjustment from 0° to 360° and precise elevation adjustment from 0° to 90°. The adjustment accuracy is improved through worm gear transmission and synchronous belt transmission. A hydraulic system and a control valve are used to achieve linkage control of drive and lock-up, ensuring efficient antenna adjustment and reliable lock-up, thus improving signal reception stability in complex environments.

Description

Technical Field

[0001] This application belongs to the field of signal receiving antenna technology, specifically relating to a communication satellite signal receiving antenna with adjustable signal receiving direction. Background Technology

[0002] The satellite signal receiving antenna is one of the core devices for realizing satellite communication, and its signal reception efficiency directly depends on the alignment accuracy between the antenna and the target satellite. With the development of satellite communication technology, communication scenarios are becoming increasingly complex. For example, in emergency rescue and disaster relief, it is necessary to quickly adjust the antenna direction to switch satellite links, and antennas on mobile communication platforms need to adapt to the movement of the carrier and correct the alignment angle in real time. This places higher demands on the antenna's directional adjustment performance.

[0003] Existing technologies for directional adjustment devices of satellite signal receiving antennas have several shortcomings: First, azimuth adjustment often uses direct gear transmission, which not only limits the adjustment range (usually unable to achieve 360° continuous rotation), but also easily leads to gaps between the gears, resulting in low adjustment accuracy and difficulty in accurately aligning with the satellite in weak signal scenarios; Second, elevation adjustment often relies on cylinder drive, resulting in poor stroke control accuracy, and the cylinder seals are prone to failure in harsh outdoor environments, causing the adjustment mechanism to jam; Third, directional adjustment and antenna locking are independent systems, and the locking device responds slowly after adjustment, making it susceptible to external forces such as wind and vibration, causing antenna deviation, especially in strong winds where signal reception stability is poor; Fourth, some automatic adjustment antennas lack linkage control between the hydraulic or electric drive system and the locking mechanism, and the locking device may not be released in time during adjustment or locked in time after adjustment, which not only reduces adjustment efficiency but may also cause component wear due to mechanism interference.

[0004] Furthermore, traditional antenna adjustment drive systems often employ a single power source. When both azimuth and elevation angles need to be adjusted simultaneously, uneven power distribution can easily occur, leading to asynchronous adjustments and further affecting alignment accuracy. Therefore, there is an urgent need for a satellite signal receiving antenna with a wide adjustment range, high precision, good coordination between drive and lock-up, and strong stability to overcome the shortcomings of existing technologies. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a communication satellite signal receiving antenna with adjustable signal receiving direction. This application achieves continuous adjustment of azimuth angle from 0° to 360° and precise adjustment of elevation angle from 0° to 90°. The adjustment accuracy is improved by worm gear transmission and synchronous belt transmission. The linkage control of drive and lock is achieved by using hydraulic system and control valve to ensure efficient antenna adjustment and reliable lock-up, thereby improving the signal reception stability in complex environments.

[0006] The technical solution adopted in this application to solve the problems existing in the prior art is:

[0007] A communication satellite signal receiving antenna with adjustable signal receiving direction includes a signal receiving antenna body, and an antenna angle adjustment base is connected to the bottom of the signal receiving antenna body.

[0008] The antenna angle adjustment base includes a base box, a column, an adjustment shaft, and an angle adjustment assembly.

[0009] The column is vertically installed above the base box. A turntable is provided at the bottom of the column. A first rotating shaft is provided at the bottom of the turntable and is rotatably connected to the bearing seat inside the base box. A rotation drive device is provided inside the base box.

[0010] The rotation drive device drives the column to rotate through the first rotating shaft, adjusting the azimuth angle of the signal receiving antenna body. The azimuth angle adjustment range is 0°-360°.

[0011] The top of the column is provided with a U-shaped frame with the opening facing upwards. A horizontally arranged adjustment shaft is rotatably connected to the U-shaped frame. Both ends of the adjustment shaft are fixedly connected to the signal receiving antenna body through fixing frames.

[0012] An angle adjustment assembly on the column drives the adjustment shaft to rotate, adjusting the elevation angle of the signal receiving antenna body. The elevation angle adjustment range is 0°-90°.

[0013] Furthermore, the rotation drive device inside the base box includes a turbine, a worm gear, and a servo motor. The turbine is coaxially and fixedly connected to the first rotating shaft, the worm gear is meshed with the turbine, and the output end of the servo motor, which is fixedly connected to the inner wall of the base box, is connected to the worm gear.

[0014] Furthermore, the angle adjustment assembly includes a first pulley fixedly connected coaxially to the adjustment shaft, an intermediate transmission device, a fourth pulley, and a driver.

[0015] The intermediate transmission device is rotatably connected to the first pulley and the fourth pulley via the first synchronous belt and the second synchronous belt, respectively. The intermediate transmission device increases the transmission ratio between the first pulley and the fourth pulley.

[0016] The driver is fixedly connected to the column, and the driver drives the fourth pulley to rotate.

[0017] Furthermore, the intermediate transmission device includes a second rotating shaft, on which a second pulley and a third pulley are sleeved. The second pulley is connected to the first pulley via a first synchronous belt, and the third pulley is connected to the fourth pulley via a second synchronous belt.

[0018] The outer diameter of the first pulley is greater than that of the second pulley, and the outer diameter of the third pulley is greater than that of the fourth pulley.

[0019] Furthermore, the driver is a hydraulic motor, and the output shaft of the hydraulic motor is coaxially and fixedly connected to the fourth pulley.

[0020] Furthermore, an adjusting shaft locking device is fixedly connected to the U-shaped frame. The adjusting shaft locking device includes a first housing, a first piston chamber inside the first housing, a first liquid inlet and a first liquid outlet at the bottom of the first housing that are connected to the first piston chamber, a first piston slidingly disposed inside the first piston chamber, a telescopic rod fixed above the first piston, the end of the telescopic rod passing through the outside of the first housing and fixed with an arc-shaped mounting groove, a brake pad being engaged with the side of the mounting groove facing the adjusting shaft, and a first spring disposed inside the first piston chamber located below the first piston.

[0021] The hydraulic station's outlet is connected to the end of the main inlet pipe, which is equipped with a first three-way valve. The remaining two ports of the first three-way valve are connected to the first inlet hole of the adjusting shaft locking device through a pressurizing pipe and to the hydraulic motor through a hydraulic motor supply pipe, respectively.

[0022] Furthermore, the hydraulic motor oil supply pipe is connected to a second three-way valve at its end. The two ports of the second three-way valve are respectively connected to a first connecting pump pipe and a second connecting pump pipe. The first connecting pump pipe and the second connecting pump pipe are respectively connected to the two oil inlets of the hydraulic motor.

[0023] A third three-way valve is connected in series on the first connecting pump pipe, and the last port of the third three-way valve is connected to the first return pipe.

[0024] A fourth three-way valve is connected in series on the second connecting pump pipe, and the last port of the fourth three-way valve is connected to the second return pipe.

[0025] Both the first return pipe and the second return pipe are connected to the hydraulic station's return port.

[0026] Furthermore, the end of the hydraulic motor oil supply pipe opposite to the second three-way valve is connected to a first interlocking valve.

[0027] The first control valve includes a second housing, a second piston chamber inside the second housing, a second liquid inlet on one end face of the second housing in the axial direction, and a third liquid outlet, a third liquid inlet and a fourth liquid outlet in the radial direction of the second housing. The third liquid inlet and the fourth liquid outlet are arranged opposite to each other, with the third liquid outlet located between the fourth liquid outlet and the second liquid inlet.

[0028] A second piston is slidably disposed inside the second piston chamber. The second piston has a first through hole, and the axis of the first through hole is arranged parallel to the axes of the third liquid inlet hole and the fourth liquid outlet hole.

[0029] The second piston has a second spring inside facing away from the second inlet hole. Under the pushing action of the second spring, the first through hole, the third inlet hole, and the fourth outlet hole on the second piston are arranged alternately.

[0030] The second inlet hole is connected to the first three-way valve through the second connecting pipe.

[0031] The third inlet hole is connected to the first outlet hole of the adjusting shaft locking device through a pressure relief pipe.

[0032] The third drain hole is connected to the hydraulic motor's oil supply pipe.

[0033] The fourth drain hole is externally connected to a third return pipe, which is connected to the hydraulic station's return port.

[0034] Furthermore, a first connecting pipe and a second interlocking valve are sequentially connected between the first three-way valve and the pressurizing pipe.

[0035] The brake pads abut against the adjusting shaft. After the adjusting shaft is braked, the second control valve cuts off the connection between the pressurization pipe and the first connecting pipe.

[0036] Furthermore, the second interlocking valve includes a third housing, a third piston chamber inside the third housing, a connecting hole on the axial end face of the third housing, and a fourth inlet hole and a fifth outlet hole arranged opposite to each other in the radial direction of the third housing.

[0037] A third piston is slidably disposed inside the third piston chamber. The third piston has a second through hole. A third spring is disposed on the side of the third piston away from the through hole. Under the push of the third spring, the second through hole connects the fourth liquid inlet hole and the fifth liquid outlet hole.

[0038] The fourth liquid inlet is connected to the first connecting pipe.

[0039] The fifth drain hole is connected to the pressurization pipe.

[0040] The first housing has an oil chamber inside, with a second drain hole and a connecting hole at both ends of the oil chamber. The connecting hole is connected to the bottom of the first piston chamber, and the second drain hole is connected to the connecting hole through a sealing control pipe.

[0041] Compared with the prior art, the beneficial effects of this application are as follows:

[0042] (1) The azimuth angle is continuously adjusted by a servo motor driving a worm gear transmission. The self-locking characteristic of the worm gear improves the initial positioning stability. The elevation angle is adjusted by a two-stage synchronous belt reduction transmission, combined with the smooth drive of the hydraulic motor, to achieve fine adjustment from 0° to 90°. The transmission ratio design makes the elevation angle adjustment accuracy up to 0.1°, solving the problems of limited adjustment range and poor accuracy in the existing technology. It can be adapted to the signal reception requirements of satellites in different orbits.

[0043] (2) A hydraulic linkage circuit is constructed through the first and second interlocking valves to achieve linkage control of locking and unlocking during adjustment and stopping the adjustment when locked. When the hydraulic motor starts, the first interlocking valve synchronously opens the drain circuit of the locking device to ensure smooth rotation of the adjusting shaft; when the locking device is working, the second interlocking valve cuts off the pressurized oil circuit to avoid excessive wear of the brake pads. At the same time, the brake pads of the locking device are tightly fitted with the adjusting shaft, and the locking response time is ≤0.5s, which solves the problem of asynchronous adjustment and locking actions in traditional equipment.

[0044] (3) The worm gear drive for azimuth adjustment and the synchronous belt drive for elevation adjustment are characterized by smooth transmission and low noise, which are suitable for complex outdoor environments. The locking device of the adjustment shaft adopts a hydraulic drive + spring reset structure. The contact pressure between the brake pad and the adjustment shaft can be precisely controlled by the hydraulic oil pressure. The locking torque can reach 500 N·m. In the strong wind environment of level 8, the antenna elevation angle offset is ≤0.2°, ensuring stable signal reception. The hydraulic system is equipped with multiple sets of three-way valves and return pipes, which can realize oil circuit depressurization and fault diversion, avoid hydraulic shock to damage the motor and locking device, and improve the overall service life of the equipment.

[0045] (4) Both the servo motor and the hydraulic motor can be automatically controlled by the remote control system. With the help of the satellite signal strength sensor, the antenna direction can be automatically aligned and corrected in real time. The overall structure of the equipment is compact. The bottom box adopts a sealed design and has a waterproof and dustproof rating of IP65. It can be adapted to various harsh construction environments such as deserts, plateaus, and coasts. It is suitable for fixed communication base stations and can also be modified for mobile communication vehicles and other mobile platforms. Attached Figure Description

[0046] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0047] Figure 1 This is a structural diagram of a communication satellite signal receiving antenna with adjustable signal receiving direction according to this application.

[0048] Figure 2 This is a first structural diagram of the antenna angle adjustment base in a communication satellite signal receiving antenna with adjustable signal receiving direction according to this application.

[0049] Figure 3 This is the second structural diagram of the antenna angle adjustment base.

[0050] Figure 4 This is the third structural diagram of the antenna angle adjustment base.

[0051] Figure 5 This is the fourth structural diagram of the antenna angle adjustment base.

[0052] Figure 6 This is a structural diagram of the angle adjustment assembly in the antenna angle adjustment base.

[0053] Figure 7 for Figure 6 sectional view,

[0054] Figure 8 This is a structural diagram of the adjustment shaft locking device in a communication satellite signal receiving antenna with adjustable signal receiving direction according to this application.

[0055] Figure 9 The structural diagram of the adjusting shaft locking device after removing the brake pads is shown.

[0056] Figure 10 First sectional view of the adjusting shaft locking device.

[0057] Figure 11 Second sectional view of the adjusting shaft locking device.

[0058] Figure 12 This is a diagram of the brake pad structure.

[0059] Figure 13 This is a cross-sectional view of the first control valve in a communication satellite signal receiving antenna with adjustable signal receiving direction according to this application.

[0060] Figure 14 This is a diagram of the piston structure in the first interlocking valve.

[0061] Figure 15 This is a cross-sectional view of the second control valve in a communication satellite signal receiving antenna with adjustable signal receiving direction according to this application.

[0062] Figure 16 This is a structural diagram of the hydraulic drive control system in a communication satellite signal receiving antenna with adjustable signal receiving direction according to this application.

[0063] Figure 17 This is a diagram of a hydraulic drive control system in a communication satellite signal receiving antenna with adjustable signal receiving direction according to this application.

[0064] In the diagram: 1-Signal receiving antenna body, 101-Fixed frame, 2-Column, 201-Turntable, 202-First rotating shaft, 3-Turbine, 4-Worm gear, 5-Servo motor, 6-U-shaped frame, 7-Adjusting shaft, 701-First pulley, 8-First synchronous belt, 9-Intermediate transmission device, 901-Second rotating shaft, 902-Second pulley, 903-Third pulley, 10-Second synchronous belt, 11-Fourth pulley, 12-Hydraulic motor, 1201-Output shaft, 13-Tensioning device, 1301-First sleeve, 1302-Slide groove, 1303-Slide rod, 1 304-Pin, 1305-Tension Spring, 1306-Connecting Frame, 1307-Second Sleeve, 14-Adjusting Shaft Locking Device, 1401-First Housing, 1402-First Piston Chamber, 1403-First Liquid Inlet, 1404-First Liquid Drain, 1405-First Piston, 1406-Telescopic Rod, 1407-Limit Rod, 1408-First Spring, 1409-Mounting Groove, 14010-Positioning Protrusion, 14011-Connecting Hole, 14012-Oil Chamber, 14013-Second Liquid Drain, 15-Brake Pad, 1501-Snap-fit ​​Groove 16-First interlocking valve, 1601-Second housing, 1602-Second piston chamber, 1603-Second inlet port, 1604-Third drain port, 1605-Third inlet port, 1606-Fourth drain port, 1607-Second piston, 1608-First through hole, 1609-Second spring, 16010-First mounting bracket, 17-Second interlocking valve, 1701-Third housing, 1702-Third piston chamber, 1703-Connecting hole, 1704-Fourth inlet port, 1705-Fifth drain port, 1706-Third piston, 1707-Second Through hole, 1708-Third spring, 1709-Second mounting bracket, 18-Inlet main pipe, 19-First three-way valve, 20-First connecting pipe, 21-Pressure pipe, 22-Blocking control pipe, 23-Second connecting pipe, 24-Hydraulic motor oil supply pipe, 25-Second three-way valve, 26-First connecting pump pipe, 27-Second connecting pump pipe, 28-Third three-way valve, 29-Fourth three-way valve, 30-First return pipe, 31-Second return pipe, 32-Pressure relief pipe, 33-Third return pipe, 34-Base box, 35-Hydraulic station, 36-Electrical control module, 37-Angle sensor. Detailed Implementation

[0065] The accompanying drawings provide a more detailed description of a communication satellite signal receiving antenna with adjustable signal receiving direction, but this is not intended to limit the scope of the application.

[0066] Depend on Figures 1 to 17 As shown, a communication satellite signal receiving antenna with adjustable signal receiving direction includes a signal receiving antenna body 1. The signal receiving antenna body 1 is a parabolic antenna, and its bottom is rigidly connected to the fixing frame 101 by bolts.

[0067] The bottom of the signal receiving antenna body 1 is connected to an antenna angle adjustment base.

[0068] The antenna angle adjustment base includes a base box 34, a column 2, an adjustment shaft 7, and an angle adjustment assembly. The base box 34 is made of stainless steel, and its interior and connections are equipped with waterproof sealing layers. The column 2 is vertically positioned above the base box 34, and a turntable 201 is located at the bottom of the column 2. The bottom of the turntable 201 is equipped with a first rotating shaft 202 that is rotatably connected to a bearing seat inside the base box 34. A rotation drive device is located inside the base box 34.

[0069] The rotation drive device drives the column 2 to rotate via the first rotating shaft 202, adjusting the azimuth angle of the signal receiving antenna body 1. The azimuth angle adjustment range is 0°-360°. In this embodiment, the rotation drive device inside the base box 34 includes a turbine 3, a worm gear 4, and a servo motor 5. The turbine 3 is coaxially and fixedly connected to the first rotating shaft 202, the worm gear 4 is meshed with the turbine 3, and the output end of the servo motor 5, which is fixedly connected to the inner wall of the base box 34, is connected to the worm gear 4.

[0070] When the azimuth angle of the signal receiving antenna body 1 needs to be adjusted, a control signal is sent to the servo motor 5 via the remote controller. The servo motor 5 starts and drives the worm gear 4 to rotate. The worm gear 4 drives the meshing turbine 3 to rotate, and the turbine 3 drives the column 2 and the antenna body 1 on top to rotate synchronously via the first rotating shaft 202. The reduction ratio of the worm gear drive can be designed to be 40:1. The servo motor's speed of 3000 rpm is reduced to a rotation speed of 75 rpm for the column 2. Through pulse control of the servo motor 5, precise adjustment of the azimuth angle can be achieved, with an adjustment accuracy of up to 0.1°. For example, when it is necessary to adjust the antenna from 0° to 30°, the servo motor 5 drives the worm gear 4 to rotate 30 times, corresponding to a rotation of the turbine 3 of 0.75 times, thus completing the 30° azimuth angle adjustment. After adjusting to the target azimuth angle, the servo motor 5 stops, and the self-locking characteristic of the worm gear keeps the column in its current position, thus initially achieving azimuth angle fixation.

[0071] The top of the column 2 is equipped with a U-shaped frame 6 with its opening facing upwards. A horizontally arranged adjusting shaft 7 has bearings fitted at both ends, which are engaged in corresponding mounting holes on the two vertical end faces of the U-shaped frame 6, enabling a rotatable connection between the adjusting shaft 7 and the U-shaped frame 6. Both ends of the adjusting shaft 7 are fixedly connected to the signal receiving antenna body 1 via fixing brackets 101. The fixing method can be welding or a single-sided double-bolt positioning method.

[0072] The angle adjustment assembly on the column 2 drives the adjustment shaft 7 to rotate, adjusting the elevation angle of the signal receiving antenna body 1. The elevation angle adjustment range is 0°-90°.

[0073] The angle adjustment assembly includes a first pulley 701 fixedly connected coaxially to the adjustment shaft 7, an intermediate transmission device 9, a fourth pulley 11, and a driver.

[0074] The intermediate transmission device 9 is rotatably connected to the first pulley 701 and the fourth pulley 11 via the first synchronous belt 8 and the second synchronous belt 10, respectively. The intermediate transmission device 9 increases the transmission ratio between the first pulley 701 and the fourth pulley 11.

[0075] The driver is fixedly connected to the column 2, and the driver drives the fourth pulley 11 to rotate.

[0076] The intermediate transmission device 9 includes a second rotating shaft 901, on which a second pulley 902 and a third pulley 903 are mounted. The second pulley 902 is connected to the first pulley 701 via a first synchronous belt 8, and the third pulley 903 is connected to the fourth pulley 11 via a second synchronous belt 10.

[0077] The outer diameter of the first pulley 701 is greater than that of the second pulley 902, and the outer diameter of the third pulley 903 is greater than that of the fourth pulley 11.

[0078] To maintain the tension of the first synchronous belt 8 and the second synchronous belt 10, in this embodiment, a tensioning device 13 is connected to the column 2. The tensioning device 13 includes at least two parallel first sleeves 1301, with a sliding rod 1303 slidably disposed inside each first sleeve 1301. The outer wall of each first sleeve 1301 has a groove 1302 arranged axially therein, and a pin 1304 slidably disposed inside the groove 1302, the pin 1304 being inserted into a corresponding pin hole in the sliding rod 1303. The end of the sliding rod 1303 is located outside the first sleeve 1301 and is fixed with a connecting bracket 1306. A second sleeve 1307 is fixed on the connecting bracket 1306 and is sleeved on the second rotating shaft 901.

[0079] The first sleeve 1301 is fixedly connected to the column 2 at one end. A tension spring 1305 is sleeved on the outside of the first sleeve 1301. The two ends of the tension spring 1305 abut against the column 2 and the connecting frame 1306, respectively. When the tension spring 1305 pushes the second rotating shaft 901 outward, the first synchronous belt 8 and the second synchronous belt 10 are tensioned. To optimize the tensioning effect, the included angles between the first synchronous belt 8 and the second synchronous belt 10 and the slide bar 1303 are the same.

[0080] The driver is a hydraulic motor 12, and the output shaft 1201 of the hydraulic motor 12 is coaxially and fixedly connected to the fourth pulley 11.

[0081] An adjusting shaft locking device 14 is fixedly connected to the U-shaped frame 6. The adjusting shaft locking device 14 includes a first housing 1401. A first piston chamber 1402 is provided inside the first housing 1401. A first liquid inlet hole 1403 and a first liquid outlet hole 1404 are provided at the bottom of the first housing 1401 and are connected to the first piston chamber 1402. A first piston 1405 is slidably provided inside the first piston chamber 1402. A telescopic rod 1406 is fixed above the first piston 1405. The end of the telescopic rod 1406 passes through the outside of the first housing 1401 and is fixed with an arc-shaped mounting groove 1409. A brake pad 15 is engaged with the side of the mounting groove 1409 facing the adjusting shaft 7. A first spring 1408 is provided inside the first piston chamber 1402 located below the first piston 1405.

[0082] To prevent the first piston 1405 from rotating, a limiting rod 1407, arranged parallel to the telescopic rod 1406, is fixed between the first piston 1405 and the mounting groove 1409. The mounting groove 1409 is an arc-shaped groove with an arc of 90°-180°, preferably 180°. The brake pad 15 has the same arc as it.

[0083] The inner diameter of the brake pad 15 is the same as the outer diameter of the adjusting shaft 7. In order to prevent the brake pad 15 from shaking, a number of snap-fit ​​grooves 1501 are recessed on the contact surface between the brake pad 15 and the mounting groove 1409. A positioning protrusion 14010 is protruding inside the mounting groove 1409, and the positioning protrusion 14010 is inserted into the snap-fit ​​groove 1501.

[0084] The hydraulic station 35 has a first three-way valve 19 at the end of the main inlet pipe 18 connected to the oil outlet. The remaining two ports of the first three-way valve 19 are connected to the first inlet hole 1403 of the adjusting shaft locking device through the pressurizing pipe 21 and to the hydraulic motor 12 through the hydraulic motor oil supply pipe 24.

[0085] The hydraulic motor oil supply pipe 24 is connected to a second three-way valve 25. The two ports of the second three-way valve 25 are respectively connected to a first connecting pump pipe 26 and a second connecting pump pipe 27. The first connecting pump pipe 26 and the second connecting pump pipe 27 are respectively connected to the two oil inlets of the hydraulic motor 12.

[0086] A third three-way valve 28 is connected in series on the first connecting pump pipe 26, and the last port of the third three-way valve 28 is connected to the first return pipe 30.

[0087] A fourth three-way valve 29 is connected in series on the second connecting pump pipe 27, and the last port of the fourth three-way valve 29 is connected to the second return pipe 31.

[0088] Both the first return pipe 30 and the second return pipe 31 are connected to the return oil port of the hydraulic station 35.

[0089] The hydraulic motor oil supply pipe 24 is connected to the first interlocking valve 16 at the end opposite to the second three-way valve 25.

[0090] The first interlocking valve 16 includes a second housing 1601, a second piston chamber 1602 inside the second housing 1601, a second liquid inlet 1603 on one end face of the second housing 1601 in the axial direction, and a third liquid outlet 1604, a third liquid inlet 1605 and a fourth liquid outlet 1606 in the radial direction of the second housing 1601. The third liquid inlet 1605 and the fourth liquid outlet 1606 are arranged opposite to each other, and the third liquid outlet 1604 is disposed between the fourth liquid outlet 1606 and the second liquid inlet 1603.

[0091] A second piston 1607 is slidably disposed inside the second piston chamber 1602. A first through hole 1608 is provided on the second piston 1607. The axis of the first through hole 1608 is arranged parallel to the axis of the third liquid inlet hole 1605 and the fourth liquid outlet hole 1606.

[0092] The second piston 1607 is equipped with a second spring 1609 inside, facing away from the second liquid inlet 1603. Under the pushing action of the second spring 1609, the first through hole 1608, the third liquid inlet 1605, and the fourth liquid outlet 1606 on the second piston 1607 are arranged alternately.

[0093] The second inlet port 1603 is connected to the first three-way valve 19 through the second connecting pipe 23.

[0094] The third inlet hole 1605 is connected to the first outlet hole 1404 of the adjusting shaft locking device 14 through the pressure relief pipe 32.

[0095] The third drain hole 1604 is connected to the hydraulic motor oil supply pipe 24.

[0096] The fourth drain hole 1606 is externally connected to the third return pipe 33, which is connected to the oil return port of the hydraulic station 35.

[0097] The second housing 1601 is provided with a first mounting bracket 16010 on the outside, and the first mounting bracket 16010 is fixedly connected to the column 2 by bolts or welding.

[0098] A first connecting pipe 20 and a second interlocking valve 17 are sequentially connected between the first three-way valve 19 and the pressurizing pipe 21.

[0099] Brake pad 15 abuts against adjusting shaft 7. After adjusting shaft 7 is braked, second control valve 17 cuts off the connection between pressurization pipe 21 and first connecting pipe 20.

[0100] The second interlocking valve 17 includes a third housing 1701, a third piston chamber 1702 inside the third housing 1701, a connecting hole 1703 on the axial end face of the third housing 1701, and a fourth liquid inlet hole 1704 and a fifth liquid outlet hole 1705 arranged radially on the third housing 1701.

[0101] A third piston 1706 is slidably disposed inside the third piston chamber 1702. A second through hole 1707 is provided on the third piston 1706. A third spring 1708 is provided on the side of the third piston 1706 away from the connecting hole 1703. Under the push of the third spring 1708, the second through hole 1707 connects the fourth liquid inlet hole 1704 and the fifth liquid outlet hole 1705.

[0102] The fourth liquid inlet hole 1704 is connected to the first connecting pipe 20.

[0103] The fifth drain hole 1705 is connected to the pressurization pipe 21.

[0104] The third housing 1701 is provided with a second mounting bracket 1709 on the outside, and the second mounting bracket 1709 is fixedly connected to the column 2 by bolts or welding.

[0105] The first housing 1401 has an oil cavity 14012 inside. The two ends of the oil cavity 14012 are respectively connected to the second drain hole 14013 and the connecting hole 14011. The connecting hole 14011 is connected to the bottom of the first piston cavity 1402. The second drain hole 14013 is connected to the connecting hole 1703 through the sealing control pipe 22.

[0106] The coordinated control steps for elevation angle adjustment and lock-up are as follows:

[0107] S01. Adjustment and Preparation Phase:

[0108] A start signal is sent to the hydraulic station 35, which starts and establishes working pressure. Simultaneously, the first three-way valve 19 is energized and switched to the oil supply state. Hydraulic oil enters the second inlet port 1603 of the first interlocking valve 16 through the main inlet pipe 19 and the second connecting pipe 23, pushing the second piston 1607 to compress the second spring 1609. This aligns the first through hole 1608 with the third inlet port 1605 and the fourth drain port 1606, opening the drain passage of the adjusting shaft locking device 14. The hydraulic oil inside the adjusting shaft locking device 14 is discharged and depressurized, releasing the brake pad 15 from locking the adjusting shaft 7. At the same time, the hydraulic oil inside the first interlocking valve 16 is discharged into the hydraulic motor oil supply pipe 24 through the third drain port 1604.

[0109] S02. Elevation Adjustment Stage:

[0110] A forward rotation signal is sent to the hydraulic motor 12, energizing the second three-way valve 25 to switch the oil circuit. Hydraulic oil enters the first connecting pump pipe 26 via the hydraulic motor supply pipe 24 and the second three-way valve 25, driving the hydraulic motor 12 to rotate forward. The hydraulic motor drives the fourth pulley 11 to rotate, which in turn drives the third pulley 903 and the second shaft 901 to rotate via the second synchronous belt. The second pulley 902 on the second shaft 901 drives the first pulley 701 and the adjusting shaft 7 to rotate via the first synchronous belt 8, ultimately causing the antenna body 1 to deflect upward, thus increasing the elevation angle. In this embodiment, the total reduction ratio for elevation angle adjustment is (200 / 80) × (180 / 60) = 7.5:1. The 500 rpm speed of the hydraulic motor is reduced to 66.67 rpm of the adjusting shaft 7, enabling fine adjustment of the elevation angle. For example, when adjusting the elevation angle from 30° to 45°, the adjusting shaft needs to rotate 15°, which corresponds to the hydraulic motor driving the fourth pulley to rotate 1.875 times. The adjustment process takes about 1.35 seconds.

[0111] S03. Lock-in and fixation phase:

[0112] When the elevation angle reaches the target value, the hydraulic motor 12 stops, the second three-way valve 25 is de-energized and reset, cutting off the oil supply passage of the hydraulic motor; at the same time, the first three-way valve 19 switches the oil supply direction, and the hydraulic oil first enters the pressurization pipe 21 through the first connecting pipe 20 and the second interlocking valve 17, and then enters the bottom of the first piston chamber 1402 through the first inlet hole 1403, pushing the first piston 1405 to compress the first spring 1408 downward, and the telescopic rod 1406 drives the brake pad 15 to abut tightly against the adjusting shaft 7, locking the adjusting shaft 7 by friction. At this time, the elevation angle of the antenna body 1 is fixed.

[0113] Meanwhile, some hydraulic oil at the bottom of the first piston chamber 1402 enters the oil chamber 14012 through the connecting hole 14011, and then enters the connecting hole 1703 of the second control valve 17 through the second drain hole 14013 and the sealing control pipe 22. This pushes the third piston 1706 to compress the third spring 1708, causing the second through hole 1707 to intersect with the fourth inlet hole 1704 and the fifth drain hole 1705, cutting off the oil passage of the pressurizing pipe 21, sealing and maintaining the pressure of the hydraulic oil inside the adjusting shaft locking device 14, and also preventing the brake pads 15 from being continuously pressured and worn.

[0114] The height of the second drain hole 14013 corresponds to the position of the first piston 1405 when the brake pad 15 is locked to the adjusting shaft 7. Therefore, hydraulic oil will only be discharged from the second drain hole 14013 after the brake pad 15 is locked to the adjusting shaft 7.

[0115] When the elevation angle needs to be adjusted again, repeat the above-mentioned adjustment preparation stage operation. The hydraulic oil pushes the first interlocking valve 16 to open the drain circuit. The hydraulic oil in the first piston chamber 1402 flows back to the hydraulic station 35 through the first drain hole 1404, the pressure relief pipe 32, the first interlocking valve 16, and the third return pipe 33. The first spring 1408 pushes the first piston 1405 upward, and the brake pad 15 separates from the adjusting shaft 7. Then the hydraulic motor can be started to adjust the elevation angle.

[0116] An angle sensor 37 is installed on the adjusting shaft 7. The angle sensor 37, hydraulic station 35, first three-way valve 19, second three-way valve 25, third three-way valve 28 and fourth three-way valve 29 are all electrically connected to the electronic control module 36. The hydraulic station 35, angle sensor 37, electronic control module 36 and each electronically controlled three-way valve adopt existing technology.

[0117] In the hydraulic system, the hydraulic station 35 uses a variable vane pump, and all three-way valves are electromagnetic three-way valves. The angle sensor 37 is an incremental rotary encoder, fixed to the side wall of the U-shaped frame 6 by a bracket. Its detection head maintains a 0.3mm gap with the outer circumference of the adjusting shaft 7, ensuring no mechanical wear during shaft rotation. The electrical control module 36 uses a PLC controller with 24 digital input ports and 16 digital output ports, meeting the signal acquisition requirements of the angle sensor 37 and the control requirements of each electromagnetic three-way valve. The PLC controller communicates with the angle sensor and various actuators via a CAN bus to ensure real-time data transmission. The electrical control module 36 is also equipped with a 7-inch touch screen display, which can display the current angle, target angle, and equipment operating status of the adjusting shaft in real time. It supports manual input of the target angle or calling commonly used angle parameters through preset programs.

[0118] The newly added electronically controlled precision adjustment process works in conjunction with the aforementioned mechanical actions. Taking the precise adjustment of the elevation angle from 30° to 45° as an example, the specific electronic control logic is as follows:

[0119] The system automatically converts the target elevation angle of 45° into the target angle that the adjustment axis 7 needs to rotate by inputting the target elevation angle of 45° through the touch screen of the electronic control module 36.

[0120] The electronic control module 36 sends a start signal to the hydraulic station 35 and the first three-way valve 19 to complete the adjustment preparation; the angle sensor 37 collects the rotation angle data of the adjustment shaft 7 in real time and sends the data to the electronic control module 36 every 10ms.

[0121] When the adjusting shaft rotates to 35°, the difference between the real-time angle and the target angle is 5°. The electronic control module controls the hydraulic station to maintain the rated pressure, and the hydraulic motor drives at high speed. When the adjusting shaft rotates to 44.9°, the electronic control module controls the hydraulic station to reduce the output pressure to 8MPa. At the same time, it controls the third three-way valve 28 to partially open, so that some hydraulic oil flows back through the first return pipe 30. The speed of the hydraulic motor drops from 500rpm to 50rpm, and enters the fine-tuning stage.

[0122] When the angle sensor detects that the adjusting shaft has rotated to 45°, it immediately sends feedback to the electronic control module. The electronic control module completes signal processing within 0.05s, controls the second three-way valve 25 to de-energize and reset, stops the hydraulic motor drive, and simultaneously controls the first three-way valve 19 to switch the oil circuit and activate the locking device.

[0123] After locking is completed, the angle sensor 37 detects the angle of the adjustment shaft again. After confirming that there is no offset, the electronic control module 36 records the adjustment data and completes the entire precise control process.

[0124] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A communication satellite signal receiving antenna with adjustable signal receiving direction, comprising a signal receiving antenna body (1), characterized in that: The bottom of the signal receiving antenna body (1) is connected to an antenna angle adjustment base; The antenna angle adjustment base includes a base box (34), a column (2), an adjustment shaft (7), and an angle adjustment assembly; The column (2) is vertically installed above the base box (34). The bottom of the column (2) is provided with a turntable (201). The bottom of the turntable (201) is provided with a first rotating shaft (202) that is rotatably connected to the bearing seat inside the base box (34). The base box (34) is provided with a rotating drive device. The rotation drive device drives the column (2) to rotate through the first rotating shaft (202) to adjust the azimuth angle of the signal receiving antenna body (1). The azimuth angle adjustment range is 0°-360°. The top of the column (2) is provided with a U-shaped frame (6) with the opening facing upwards. A horizontally arranged adjustment shaft (7) is rotatably connected to the U-shaped frame (6). Both ends of the adjustment shaft (7) are fixedly connected to the signal receiving antenna body (1) through a fixing frame (101). An angle adjustment assembly on the column (2) drives the adjustment shaft (7) to rotate, adjusting the elevation angle of the signal receiving antenna body (1). The elevation angle adjustment range is 0°-90°. The angle adjustment assembly includes a first pulley (701) coaxially fixedly connected to the adjustment shaft (7), an intermediate transmission device (9), a fourth pulley (11), and a driver; The intermediate transmission device (9) is rotatably connected to the first pulley (701) and the fourth pulley (11) via the first synchronous belt (8) and the second synchronous belt (10), respectively. The intermediate transmission device (9) increases the transmission ratio between the first pulley (701) and the fourth pulley (11). The driver is fixedly connected to the column (2), and the driver drives the fourth pulley (11) to rotate; The intermediate transmission device (9) includes a second rotating shaft (901), on which a second pulley (902) and a third pulley (903) are fitted. The third pulley (903) is connected to the first pulley (701) via a first synchronous belt (8), and the second pulley (902) is connected to the fourth pulley (11) via a second synchronous belt (10). The outer diameter of the first pulley (701) is greater than that of the second pulley (902), and the outer diameter of the third pulley (903) is greater than that of the fourth pulley (11); The driver is a hydraulic motor (12), and the output shaft (1201) of the hydraulic motor (12) is coaxially and fixedly connected to the fourth pulley (11); The U-shaped frame (6) is fixedly connected to an adjusting shaft locking device (14). The adjusting shaft locking device (14) includes a first housing (1401). The first housing (1401) has a first piston chamber (1402) inside. The bottom of the first housing (1401) has a first liquid inlet (1403) and a first liquid outlet (1404) that are connected to the first piston chamber (1402). The first piston chamber (1402) has a first piston (1405) that is slidably arranged inside. The first piston (1405) has a telescopic rod (1406) fixed above it. The end of the telescopic rod (1406) passes through to the outside of the first housing (1401) and is fixed with an arc-shaped mounting groove (1409). The mounting groove (1409) has a brake pad (15) snapped into the side facing the adjusting shaft (7). The first piston chamber (1402) located below the first piston (1405) has a first spring (1408) inside. The oil outlet of the hydraulic station (35) is connected to the end of the main inlet pipe (18) and is equipped with a first three-way valve (19). One of the remaining two ports of the first three-way valve (19) is connected to the first inlet hole (1403) of the adjusting shaft locking device through the second control valve (17) and the pressurizing pipe (21) in sequence. The other port of the remaining two ports of the first three-way valve (19) is connected to the hydraulic motor (12) through the first control valve (16) and the hydraulic motor oil supply pipe (24) in sequence.

2. The communication satellite signal receiving antenna with adjustable signal receiving direction according to claim 1, characterized in that: The rotation drive device inside the base box (34) includes a turbine (3), a worm (4) and a servo motor (5). The turbine (3) is coaxially and fixedly connected to the first rotating shaft (202). The worm (4) is meshed with the turbine (3). The output end of the servo motor (5), which is fixedly connected to the inner wall of the base box (34), is connected to the worm (4).

3. The communication satellite signal receiving antenna with adjustable signal receiving direction according to claim 1, characterized in that: The hydraulic motor oil supply pipe (24) is connected to a second three-way valve (25) at its end. The two ports of the second three-way valve (25) are respectively connected to a first connecting pump pipe (26) and a second connecting pump pipe (27). The first connecting pump pipe (26) and the second connecting pump pipe (27) are respectively connected to the two oil inlets of the hydraulic motor (12). A third three-way valve (28) is connected in series on the first connecting pump pipe (26), and the last port of the third three-way valve (28) is connected to the first return pipe (30); A fourth three-way valve (29) is connected in series on the second connecting pump pipe (27), and the last port of the fourth three-way valve (29) is connected to the second return pipe (31); Both the first return pipe (30) and the second return pipe (31) are connected to the return port of the hydraulic station (35).

4. The communication satellite signal receiving antenna with adjustable signal receiving direction according to claim 3, characterized in that: The hydraulic motor oil supply pipe (24) is connected to the first control valve (16) at the end opposite to the second three-way valve (25). The first interlocking valve (16) includes a second housing (1601), a second piston chamber (1602) is provided inside the second housing (1601), a second liquid inlet (1603) is provided on one end face of the second housing (1601) in the axial direction, and a third liquid outlet (1604), a third liquid inlet (1605) and a fourth liquid outlet (1606) are provided in the radial direction of the second housing (1601). The third liquid inlet (1605) and the fourth liquid outlet (1606) are arranged opposite to each other, and the third liquid outlet (1604) is located between the fourth liquid outlet (1606) and the second liquid inlet (1603). The second piston chamber (1602) is slidably provided with a second piston (1607), and the second piston (1607) is provided with a first through hole (1608). The axis of the first through hole (1608) is arranged parallel to the axis of the third liquid inlet hole (1605) and the fourth liquid outlet hole (1606). The second piston (1607) is backed by the second inlet hole (1603) and has a second spring (1609) inside. Under the pushing action of the second spring (1609), the first through hole (1608) on the second piston (1607) is arranged alternately with the third inlet hole (1605) and the fourth outlet hole (1606). The second liquid inlet (1603) is connected to the first three-way valve (19) through the second connecting pipe (23); The third liquid inlet (1605) is connected to the first liquid outlet (1404) of the adjusting shaft locking device (14) through the pressure relief pipe (32); The third drain hole (1604) is connected to the hydraulic motor oil supply pipe (24); The fourth drain hole (1606) is externally connected to the third return pipe (33), which is connected to the oil return port of the hydraulic station (35).

5. A communication satellite signal receiving antenna with adjustable signal receiving direction according to claim 4, characterized in that: A first connecting pipe (20) and a second control valve (17) are sequentially connected between the first three-way valve (19) and the pressurizing pipe (21). The brake pad (15) abuts against the adjusting shaft (7). After the adjusting shaft (7) is braked, the second control valve (17) cuts off the connection between the pressurizing pipe (21) and the first connecting pipe (20).

6. The communication satellite signal receiving antenna with adjustable signal receiving direction according to claim 5, characterized in that: The second interlocking valve (17) includes a third housing (1701), a third piston chamber (1702) is provided inside the third housing (1701), a connecting hole (1703) is provided on the axial end face of the third housing (1701), and a fourth liquid inlet hole (1704) and a fifth liquid outlet hole (1705) are arranged opposite to each other in the radial direction of the third housing (1701). The third piston chamber (1702) is equipped with a third piston (1706) that slides inside. The third piston (1706) is provided with a second through hole (1707). The third piston (1706) is provided with a third spring (1708) on the side away from the connecting hole (1703). Under the push of the third spring (1708), the second through hole (1707) connects the fourth liquid inlet hole (1704) and the fifth liquid outlet hole (1705). The fourth liquid inlet (1704) is connected to the first connecting pipe (20); The fifth drain hole (1705) is connected to the pressurization pipe (21); The first housing (1401) has an oil cavity (14012) inside. The two ends of the oil cavity (14012) are connected to the second drain hole (14013) and the connecting hole (14011), respectively. The connecting hole (14011) is connected to the bottom of the first piston cavity (1402). The second drain hole (14013) is connected to the connecting hole (1703) through the sealing control pipe (22).

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