Automatic waveguide switching structure driven by synchronous belt and low-speed servo motor

Abstract

The invention relates to the technical field of satellite communication equipment, and discloses an automatic waveguide switching structure driven by a synchronous belt and a low-speed servo motor, which is characterized in that a transmitting end signal switching system and a receiving end signal switching system are used for realizing multi-satellite beam signal transmission; a synchronous belt and a low-speed servo motor are adopted to construct a signal transmitting and receiving route double-transmission system, a transmitting end and receiving end waveguide path switching structure with a built-in arc waveguide path and a limiting block-limiting groove limiting mechanism is matched, and a semi-closed-loop control mode is achieved by combining a built-in encoder of the motor, so that accurate waveguide switching is achieved, and the accuracy of waveguide switching is improved. And meanwhile, the requirements of compact structure, low manufacturing cost and low mounting difficulty are met.

Description

Technical Field

[0001] This invention relates to the field of satellite communication equipment technology, and more specifically, to an automatic waveguide switching structure that utilizes a synchronous belt and a low-speed servo motor drive. Background Technology

[0002] With the rapid development of wireless communication technology, satellite communication needs to connect multiple satellite beams. As an important structural module in satellite antenna terminals, waveguide switching devices not only need to have precise switching functions, but also need to meet the requirements of compact structure, low manufacturing cost, and easy installation. Moreover, civilian and military satellite communication equipment has more stringent requirements for the parameters of waveguide-related devices. Therefore, researching structural designs that use different transmission modes to achieve waveguide switching has important guiding significance and industrial application value in this field. Currently, waveguide switching systems on the market are mainly divided into two types: manual switching and automatic switching. Automatic switching structures generally use gear transmission. Specifically, a servo motor or stepper motor is controlled to drive the gear set to rotate, which in turn drives the waveguide circuit to rotate within the cavity to complete the waveguide circuit switching. Although this type of gear transmission structure can achieve high-efficiency transmission under precise calculation and good lubrication conditions, it has problems such as high cost of industrial customization of gears, extremely high installation requirements for various parts of the gear system, and many causes of transmission failure, which are difficult to troubleshoot after failure.

[0003] Therefore, the present invention provides an automatic waveguide switching structure that utilizes a synchronous belt and a low-speed servo motor drive, thereby improving the above-mentioned technical problems. Summary of the Invention

[0004] This invention addresses the shortcomings of existing automatic waveguide switching structures, such as high cost of gear transmission, stringent installation requirements, and difficulty in troubleshooting transmission failures. It provides an automatic waveguide switching structure utilizing a synchronous belt and a low-speed servo motor. The invention employs a dual-drive system for signal transmission and reception using a synchronous belt and a low-speed servo motor. This is combined with a waveguide path switching structure for the transmitting and receiving ends, featuring a built-in arc-shaped waveguide path and a limit block-limit slot limiting mechanism. Furthermore, a semi-closed-loop control method is implemented using a built-in encoder in the motor to achieve precise waveguide switching while meeting the requirements of compact structure, low manufacturing cost, and easy installation.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automatic waveguide switching structure using synchronous belt and low-speed servo motor drive, comprising: a transmitter signal switching system and a receiver signal switching system for realizing multi-satellite beam signal transmission; The transmitter signal switching system includes: a first servo motor, a first synchronous belt drive assembly, and a transmitter waveguide path switching assembly. The first servo motor drives the transmitter waveguide path switching assembly to operate through the first synchronous belt drive assembly. The receiving end signal switching system includes: a second servo motor, a second synchronous belt drive assembly, and a receiving end waveguide path switching assembly. The second servo motor drives the receiving end waveguide path switching assembly to operate through the second synchronous belt drive assembly. Both the transmitting and receiving waveguide path switching components are equipped with limit mechanisms to limit the switching angle of the waveguide path; the first and second servo motors both have angle control functions, which, together with the zero-slip transmission characteristics of the synchronous belt drive component, enable precise switching of the transmitting / receiving signal path.

[0006] As a preferred embodiment of the present invention, the first synchronous belt drive assembly includes: a first driving synchronous pulley, a first synchronous belt, and a first driven synchronous pulley; The second synchronous belt drive assembly includes: a second driving synchronous pulley, a second synchronous belt, and a second driven synchronous pulley; The first active synchronous pulley is fixedly connected to the output shaft of the first servo motor and meshes with the first driven synchronous pulley via a first synchronous belt; the second active synchronous pulley is fixedly connected to the output shaft of the second servo motor and meshes with the second driven synchronous pulley via a second synchronous belt. The first and second synchronous belts are both made of polyurethane + fiberglass rope, and have a tensile strength ≥1500N.

[0007] As a preferred embodiment of the present invention, both the first servo motor and the second servo motor are 12V DC servo motors with a rated torque of 0.08Nm and a maximum speed of 120r / min. Both are equipped with a built-in 16-bit encoder and adopt a semi-closed-loop position control method, with an angle positioning accuracy of ≤±0.1°.

[0008] As a preferred technical solution of the present invention, the transmitting end waveguide path switching component is adapted and installed in the first housing. The left and right sides of the first housing are respectively provided with an antenna left-hand signal transmission port and an antenna right-hand signal transmission port, and the upper and lower sides are respectively provided with a transmission signal free release end and a BUC signal transmission end. The transmitting waveguide path switching component further includes a transmitting waveguide transmission path and a transmitting waveguide release path, both of which are arc-shaped and rotatably connected to the inside of the first housing. The BUC signal transmitting end is connected to the BUC signal transmitting module.

[0009] As a preferred technical solution of the present invention, the receiving end waveguide path switching component is adapted and installed in the second housing. The left and right sides of the second housing are respectively provided with antenna left-hand signal receiving port and antenna right-hand signal receiving port, and the upper and lower sides are respectively provided with receiving signal free release end and LNB signal receiving end. The receiving waveguide path switching component further includes a receiving waveguide receiving path and a receiving waveguide release path, both of which are arc-shaped and rotatably connected to the inside of the second housing. The LNB signal receiving end is connected to the LNB signal receiving module.

[0010] As a preferred embodiment of the present invention, the limiting mechanism includes: a limiting groove and a limiting block; the limiting groove is respectively opened on the inner upper and lower surfaces of the first housing and the second housing, and the limiting block is respectively installed on the upper surface of the first disk and the second disk, and on the outer lower surface of the transmitting waveguide transmission path and the receiving waveguide release path; The limiting block is slidably connected to the corresponding limiting groove, and the switching angle of the waveguide path is limited to ±90° through the cooperation of the two.

[0011] As a preferred embodiment of the present invention, both the first and second driving synchronous pulleys have 11 teeth and a pitch circle diameter of 17.50 mm; both the first and second driven synchronous pulleys have 23 teeth and a pitch circle diameter of 36.30 mm; the transmission ratio between the first driving synchronous pulley and the first driven synchronous pulley, and the transmission ratio between the second driving synchronous pulley and the second driven synchronous pulley are both 1:2.09.

[0012] As a preferred embodiment of the present invention, the transmitting waveguide transmitting path is used to connect the BUC signal transmitting module with the antenna left-hand signal transmitting port or the antenna right-hand signal transmitting port to output satellite communication transmitting signals; the transmitting waveguide releasing path is used to connect the antenna left-hand signal transmitting port or the antenna right-hand signal transmitting port with the transmitting signal free release end to release idle transmitting signals; The receiving waveguide receiving path is used to connect the LNB signal receiving module with the antenna left-hand rotating signal receiving port or the antenna right-hand rotating signal receiving port to receive satellite beam signals; the receiving waveguide release path is used to connect the antenna left-hand rotating signal receiving port or the antenna right-hand rotating signal receiving port with the receiving signal free release end to release idle receiving signals.

[0013] As a preferred embodiment of the present invention, the first housing, the second housing, the first disk, the second disk, as well as the first driving synchronous wheel, the first driven synchronous wheel, the second driving synchronous wheel, and the second driven synchronous wheel are all made of aluminum alloy 6061 and have a surface heat treatment grade of T6.

[0014] In summary, the present invention has the following beneficial effects: Firstly, the use of synchronous belt drive to replace traditional gear drive is advantageous because synchronous belt is easier to customize in industry and has a significantly lower manufacturing cost than gear sets. Moreover, the transmission system does not require strict adjustment of meshing clearance during assembly, and the installation requirements are more relaxed. This effectively solves the problems of high cost and difficult installation of existing gear drive structures, and is suitable for the needs of large-scale production.

[0015] Secondly, a semi-closed-loop control is achieved by using a low-speed servo motor with a built-in encoder. Combined with the mechanical limit design of limit blocks and limit slots, the rotation angle of the waveguide path can be precisely controlled (such as switching between ±90°) to avoid path deviation. The synchronous belt drive has the characteristics of no slippage and constant transmission ratio. Compared with gear drive, it reduces the risk of failure such as meshing wear and jamming, and the cause of failure is easier to find. At the same time, its vibration resistance meets the requirements of harsh use scenarios, improving the stability of satellite communication signal transmission.

[0016] Thirdly, both the transmitting and receiving waveguide paths adopt an arc design and are integrated inside an independent housing. The dual-drive system has a compact layout, occupies little space, and can flexibly adapt to the installation space limitations of satellite antenna terminals. At the same time, it is suitable for multi-satellite beam connection scenarios, and can achieve efficient switching between transmitted and received signals, meeting the stringent parameter requirements of civilian and military satellite communication equipment for waveguide devices.

[0017] Fourth, synchronous belt drives do not require complex lubrication, reducing later maintenance costs; their flexible transmission characteristics can buffer impact loads, making them more adaptable to complex working conditions than rigid gear drives; and the meshing transmission efficiency of synchronous belts and synchronous pulleys is high. Combined with the smooth output of low-speed servo motors, this ensures rapid response of waveguide switching actions, further improving the signal switching efficiency of satellite communication. Attached Figure Description

[0018] Figure 1 A perspective view of an automatic waveguide switching structure using synchronous belt and low-speed servo motor drive provided in an embodiment of the present invention; Figure 2 A perspective view of the signal transmission route switching system and the signal reception route switching system provided in the embodiments of the present invention; Figure 3 This is a schematic diagram of the transmitting waveguide path switching structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the transmitting waveguide path switching structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the initial state provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the target state provided in an embodiment of the present invention; In the diagram: 1. First servo motor; 2. First active synchronous wheel; 3. First synchronous belt; 4. First driven synchronous wheel; 5. Transmitter waveguide path switching structure; 6. Second servo motor; 7. Second active synchronous wheel; 8. Second synchronous belt; 9. Second driven synchronous wheel; 10. Receiver waveguide path switching structure; 11. LNB signal receiving module; 12. BUC signal transmitting module; 13. Ka-band antenna; 14. Antenna left-handed signal transmitting port; 15. Antenna right-handed signal transmitting port; 16. Transmit signal free release terminal; 17. BUC signal transmitting terminal; 18. Transmitting waveguide transmission path; 19. Transmitting waveguide release path; 20. Antenna left-handed signal receiving port; 21. Antenna right-handed signal receiving port; 22. Receive signal free release terminal; 23. LNB signal receiving terminal; 24. Receiver waveguide release path; 25. Receiver waveguide receiving path; 26. First housing; 27. Second housing; 28. First disk; 29. ​​Second disk; 30. Limiting groove; 31. Limiting block. Detailed Implementation

[0019] The present application will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These all fall within the protection scope of the present application.

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] It should be noted that, unless there is a conflict, the various features in the embodiments of this application can be combined with each other, all of which are within the protection scope of this application. Furthermore, although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than the module division in the device or the order in the flowchart. In addition, the terms "first," "second," and "third" used herein do not limit the data or execution order, but only distinguish identical or similar items with essentially the same function and effect.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0023] Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0024] Please refer to Figure 1-2 All components and parts are installed with the Ka-band antenna 13 as the unified mounting reference. The BUC signal transmitting module 12 (upconversion module / power amplifier) ​​is installed on the right side of the Ka-band antenna 13; the LNB signal receiving module 11 (downconversion amplifier module) is installed on the left side. A signal transmission route switching system and a signal reception route switching system are provided between the BUC signal transmitting module 12 and the LNB signal receiving module 11.

[0025] The signal transmission route switching system includes: a first servo motor 1, a first active synchronous pulley 2, a first synchronous belt 3, a first driven synchronous pulley 4, and a transmitting end waveguide path switching structure 5; The first servo motor 1 is vertically fixed to one side of the Ka-band antenna 13. Its output shaft is fixedly connected to the first active synchronous pulley 2. The first active synchronous pulley 2 is meshed with the first driven synchronous pulley 4 through the first synchronous belt 3, and the meshing depth is ≥ 2 / 3 of the tooth height.

[0026] The signal receiving route switching system includes: a second servo motor 6, a second active synchronous pulley 7, a second synchronous belt 8, a second driven synchronous pulley 9, and a receiving end waveguide path switching structure 10; The second servo motor 6 is vertically fixed to one side of the Ka-band antenna 13, and its output shaft is fixedly connected to the second active synchronous pulley 7. The second active synchronous pulley 7 is meshed with the second driven synchronous pulley 9 through the second synchronous belt 8, and the meshing depth is ≥ 2 / 3 of the tooth height.

[0027] Please refer to Figure 3 The transmitting waveguide path switching structure 5 includes: a first housing 26, an antenna left-handed signal transmitting port 14, an antenna right-handed signal transmitting port 15, a transmitting signal free release end 16, a BUC signal transmitting end 17, a transmitting waveguide transmitting path 18, and a transmitting waveguide release path 19. Please refer to Figure 4 The receiving waveguide path switching structure 10 includes: a second housing 27, an antenna left-handed signal receiving port 20, an antenna right-handed signal receiving port 21, a receiving signal free release end 22, an LNB signal receiving end 23, a receiving waveguide release path 24, and a receiving waveguide receiving path 25.

[0028] Please refer to Figure 3-6The first housing 26 and the second housing 27 are both located between the first servo motor 1 and the BUC signal transmitting module 12 and are fixedly connected to the Ka-band antenna 13; the left and right sides of the first housing 26 are provided with antenna left-hand signal transmitting port 14 and antenna right-hand signal transmitting port 15; the upper and lower sides of the first housing 26 are provided with transmitting signal free release end 16 and BUC signal transmitting end 17, and the BUC signal transmitting end 17 is connected to the BUC signal transmitting module 12; the first housing 26 is symmetrically provided with transmitting waveguide transmission path 18 and transmitting waveguide release path 19 inside.

[0029] The second housing 27 has left-hand antenna signal receiving port 20 and right-hand antenna signal receiving port 21 on its left and right sides; the second housing 27 has a signal receiving free release end 22 and an LNB signal receiving end 23 on its upper and lower sides, and the LNB signal receiving end 23 is connected to the LNB signal receiving module 11; the second housing 27 has a receiving waveguide release path 24 and a receiving waveguide receiving path 25 symmetrically arranged inside its interior.

[0030] Both the transmitting waveguide transmission path 18 and the transmitting waveguide release path 19 are arc-shaped and rotatably connected to the interior of the first housing 26. Both the receiving waveguide release path 24 and the receiving waveguide receiving path 25 are arc-shaped and rotatably connected to the interior of the second housing 27.

[0031] A drive shaft is fixedly installed on the lower surface of the first driven synchronous wheel 4. The other end of the drive shaft passes through the upper surface of the first housing 26 and a first disc 28 is installed there. The first disc 28 is rotatably connected to the inside of the first housing 26 and its other side is fixedly connected to the transmitting waveguide transmission path 18 and the transmitting waveguide release path 19. A drive shaft is fixedly installed on the lower surface of the second driven synchronous wheel 9. The other end of the drive shaft passes through the upper surface of the second housing 27 and a second disc 29 is installed thereon. The second disc 29 is rotatably connected to the inside of the second housing 27 and its other side is fixedly connected to the receiving waveguide release path 24 and the receiving waveguide receiving path 25.

[0032] Limiting grooves 30 are formed on the upper and lower surfaces inside the first housing 26 and the second housing 27; limiting blocks 31 are installed on the upper surfaces of the first disk 28 and the second disk 29; limiting blocks 31 are installed on the lower outer surfaces of the transmitting waveguide transmission path 18 and the receiving waveguide release path 24; multiple limiting blocks 31 are located in the corresponding limiting grooves 30.

[0033] The rotation limits of transmitting waveguide transmission path 18, transmitting waveguide release path 19, receiving waveguide release path 24, and receiving waveguide receiving path 25 are formed by the angular travel of the limit block 31 within the limit groove 30. When it rotates to the limit position, it is detected by the motor's built-in encoder (16-bit resolution), forming a semi-closed-loop control.

[0034] Taking the switch from "right-hand receive / left-hand transmit" to "left-hand receive / right-hand transmit" as an example, the specific process is as follows: Initial state, such as Figure 5 As shown: Receiver: The LNB signal receiving module 11 is connected to the right-hand circular signal receiving port 21 of the antenna through the receiving waveguide receiving path 25, and the antenna is in the right-hand circular receiving state; the left-hand circular signal waste wave enters from the left-hand circular signal receiving port 20 of the antenna, and is guided to the receiving signal free release end 22 through the receiving waveguide release path 24 to allow it to be released freely, so as not to affect the left-hand circular transmission performance. Transmitter: The BUC signal transmitting module 12 is connected to the left-handed signal transmitting port 14 of the antenna through the transmitting waveguide transmitting path 18, and the antenna is in the left-handed transmitting state; the right-handed transmitting signal waste wave enters from the right-handed signal transmitting port 15 of the antenna and is guided to the transmitting signal free release end 16 through the transmitting waveguide release path 19.

[0035] Switching process: The system sends a switching command, and the servo motor 6 of the receiving route switching system starts, driving the active synchronous wheel 7 to rotate counterclockwise. Through the synchronous belt 8, it drives the driven synchronous wheel 9 to rotate, causing the receiving waveguide release path 24 and the receiving waveguide receiving path 25 to rotate 90° counterclockwise along the limiting groove 30. At the same time, the servo motor 1 of the transmission route switching system starts, driving the active synchronous wheel 2 to rotate clockwise, and driving the driven synchronous wheel 4 to rotate through the synchronous belt 3, so that the transmission path 18 and the release path 19 of the transmission waveguide rotate 90° clockwise along the limiting groove 30. When the switching structure reaches the target position, the limit block triggers the motor encoder, and the motor stops running.

[0036] Target state, such as Figure 6 As shown: Receiver: The LNB signal receiving module 11 is connected to the left-hand circular signal receiving port 20 of the antenna through the receiving waveguide receiving path 25, and the antenna is switched to the left-hand circular receiving state; the right-hand circular received signal waste wave is guided to the receiving signal free release end 22 through the receiving waveguide release path 24; Transmitter: The BUC signal transmitting module 12 is connected to the right-handed signal transmitting port 15 of the antenna through the transmitting waveguide transmitting path 18, and the antenna is switched to the right-handed transmitting state; the left-handed transmitting signal waste wave is guided to the transmitting signal free release end 16 through the transmitting waveguide release path 19.

[0037] Example: Both the first servo motor 1 and the second servo motor 6 are 12V DC servo motors with a rated torque of 0.08Nm, a maximum speed of 120r / min, and a built-in 16-bit encoder, supporting semi-closed-loop position control; The first driving synchronizing pulley 2 and the second driving synchronizing pulley 7 each have 11 teeth and a pitch circle diameter of 17.50 mm; the first driven synchronizing pulley 4 and the second driven synchronizing pulley 9 each have 23 teeth and a pitch circle diameter of 36.30 mm; the first synchronizing belt 3 and the second synchronizing belt 8 are 5M type closed annular belts, with a length of 192 mm and a width of 15 mm. The four synchronous pulleys are made of aluminum alloy 6061 with a surface heat treatment grade of T6; the two synchronous belts are made of polyurethane + fiberglass rope (tensile strength ≥1500N); and other fixed installation structural components are all made of aluminum alloy 6061.

[0038] The first synchronous belt 3 and the second synchronous belt 8 have a travel distance of 30mm, the angular travel of the limit block is ±90°, the maximum speed is 0.11m / s, the repeatability is ±0.02mm, and the adjacent port switching time is ≤1.2s. RF characteristics guarantee a voltage standing wave ratio ≤1.20, insertion loss ≤0.3dB, and port isolation ≥70dB across the entire 26.5-40GHz frequency band. The mechanical life design specification is 500,000 switching operations, during which the positioning accuracy attenuation will not exceed 20% of the initial value. Environmental adaptability meets industrial equipment standards, with an operating temperature of -10℃ to +50℃, relative humidity ≤95% (non-condensing), and vibration resistance meeting MIL-STD-202G standards.

[0039] The reliability calculation for the synchronous pulley-synchronous belt meshing tooth number verification and evaluation is as follows: Number of meshing teeth of the driving synchronizer pulleys (first driving synchronizer pulley 2 and second driving synchronizer pulley 7) Teeth. Usually required. This meets the design requirements. Transmission ratio When the motors (first servo motor 1 and second servo motor 6) rotate at 100 r / min, the driven synchronous pulleys (first driven synchronous pulley 4 and second driven synchronous pulley 9) rotate at... Synchronous belt speed (first synchronous belt 3 and second synchronous belt 8) (Where L_1=55mm is the displacement per revolution of the motor). The speed fluctuation mainly comes from the synchronous belt pitch error (typical ±0.03mm for a 5M belt). The theoretical speed fluctuation rate Δv / v=0.03 / 5=0.6%, which can be reduced to below 0.3% in practice through tension control.

[0040] The calculation and verification of the synchronous pulley's running speed parameters are as follows: The drive synchronizing pulley has 11 teeth (5M pitch) and a pitch circle diameter of [missing information]. The linear displacement of the synchronous belt per motor revolution is L = 11 teeth × 5mm = 55mm. Therefore, the relationship between the synchronous belt speed v (m / s) and the motor speed n (r / min) is v = n × 55 / 1000 / 60 = n × 0.000917. At the maximum speed of 120 r / min, v-max = 120 × 0.000917 ≈ 0.11 m / s. With the acceleration set at 0.5 m / s² (considering low-speed smoothness), the acceleration time... Acceleration distance For a 30mm stroke, the constant speed period of time Total switching time It meets the requirement of ≤0.8s.

[0041] The tensile strength of the timing belt is verified as follows: The motor's rated torque T = 0.08 Nm is converted into the effective tension of the synchronous belt. Considering a working condition factor Ka=1.2 (stable load, 12 hours of work per day), the design tension Fd=Fu×Ka=9.14×1.2≈10.97N. The breaking strength of the 5M-15 type synchronous belt (polyurethane + fiberglass rope) is ≥1500N, and the safety factor S=Fbr / Fd=1500 / 10.97≈137, indicating sufficient absolute strength.

[0042] The bending fatigue strength of the timing belt is calculated as follows: Bending fatigue is the primary failure mode for synchronous belts. The bending fatigue life of a 5M synchronous belt is calculated based on Miner's cumulative damage theory. According to the calculation formula: bending stress σ_b = E × y / R = 1000 × 0.75 / 8.75 ≈ 85.7 MPa (neutral layer distance from tooth root 0.75 mm). Based on the manufacturer's SN curve, under the conditions of σ_b = 85.7 MPa and frequency < 1 Hz (120 r / min), the life > This is the second cycle. Considering a safety factor of 6.87, the designed replacement cycle is... The next or 5 years (whichever comes first).

[0043] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic waveguide switching structure using a synchronous belt and a low-speed servo motor drive, characterized by, The application relates to a transmitting-end signal switching system and a receiving-end signal switching system for realizing multi-satellite beam signal transmission. The transmitting-end signal switching system comprises a first servo motor (1), a first synchronous belt transmission assembly and a transmitting-end waveguide path switching assembly (5), the first servo motor (1) drives the transmitting-end waveguide path switching assembly (5) to act through the first synchronous belt transmission assembly. The receiving-end signal switching system comprises a second servo motor (6), a second synchronous belt transmission assembly and a receiving-end waveguide path switching assembly (10), the second servo motor (6) drives the receiving-end waveguide path switching assembly (10) to act through the second synchronous belt transmission assembly. The transmitting-end waveguide path switching assembly (5) and the receiving-end waveguide path switching assembly (10) are both provided with a limiting mechanism for limiting the switching angle of the waveguide path; the first servo motor (1) and the second servo motor (6) both have angle control functions, and are matched with the non-slip transmission characteristics of the synchronous belt transmission assembly, so that the transmitting / receiving signal path can be accurately switched. The first synchronous belt transmission assembly comprises a first driving synchronous wheel (2), a first synchronous belt (3) and a first driven synchronous wheel (4).

2. The automatic waveguide switching structure using synchronous belt and low-speed servo motor transmission according to claim 1, characterized in that, The second synchronous belt transmission assembly comprises a second driving synchronous wheel (7), a second synchronous belt (8) and a second driven synchronous wheel (9). The first driving synchronous wheel (2) is fixedly connected with the output shaft of the first servo motor (1) and is engaged with the first driven synchronous wheel (4) through the first synchronous belt (3); the second driving synchronous wheel (7) is fixedly connected with the output shaft of the second servo motor (6) and is engaged with the second driven synchronous wheel (9) through the second synchronous belt (8). The materials of the first synchronous belt (3) and the second synchronous belt (8) are both polyurethane + glass fiber rope, and the breaking strength is greater than or equal to 1500N. The first servo motor (1) and the second servo motor (6) are both 12V DC servo motors, the rated torque is 0.08Nm, the maximum rotating speed is 120r / min, and both are provided with a built-in 16-bit encoder, adopt a semi-closed loop position control mode, and the angle positioning accuracy is less than or equal to 0.1 degrees.

3. The automatic waveguide switching structure using synchronous belt and low-speed servo motor transmission according to claim 1, characterized in that, The transmitting-end waveguide path switching assembly (5) is adaptively installed in a first shell (26), the left and right sides of the first shell (26) are respectively provided with an antenna left-handed signal transmitting port (14) and an antenna right-handed signal transmitting port (15), and the upper and lower sides are respectively provided with a transmitting signal free release end (16) and a BUC signal transmitting end (17).

4. The automatic waveguide switching structure using synchronous belt and low-speed servo motor drive according to claim 1, characterized in that, The transmitting-end waveguide path switching assembly (5) further comprises a transmitting waveguide transmitting path (18) and a transmitting waveguide releasing path (19), both of which are arranged in an arc shape and are rotationally connected with the first shell (26), and the BUC signal transmitting end (17) is connected with a BUC signal transmitting module (12). ​ 5. The automatic waveguide switching structure using synchronous belt and low-speed servo motor drive according to claim 1, characterized in that, The receiving end waveguide path switching component (10) is adapted to be installed in the second shell (27), the second shell (27) is respectively provided with an antenna left-handed signal receiving port (20) and an antenna right-handed signal receiving port (21) on the left and right sides, and is respectively provided with a receiving signal free release end (22) and an LNB signal receiving end (23) on the upper and lower sides; The receiving end waveguide path switching component (10) further comprises a receiving waveguide receiving path (25) and a receiving waveguide release path (24), both of which are arranged in an arc shape and are rotationally connected with the inside of the second shell (27), and the LNB signal receiving end (23) is connected with the LNB signal receiving module (11).

6. The automatic waveguide switching structure using synchronous belt and low-speed servo motor drive according to claim 1, characterized in that, The limiting mechanism comprises a limiting groove (30) and a limiting block (31); the limiting groove (30) is respectively formed on the upper and lower surfaces of the inside of the first shell (26) and the second shell (27), and the limiting block (31) is respectively installed on the upper surfaces of the first disc (28) and the second disc (29), and the outer lower surfaces of the transmitting waveguide transmitting path (18) and the receiving waveguide release path (24); The limiting block (31) is slidingly connected with the corresponding limiting groove (30), and the switching angle of the waveguide path is limited to ±90° through the cooperation of the two.

7. The automatic waveguide switching structure using synchronous belt and low-speed servo motor drive according to claim 2, characterized in that, The first driving synchronous wheel (2) and the second driving synchronous wheel (7) are both 11 teeth, and the pitch circle diameter is 17.50mm; the first driven synchronous wheel (4) and the second driven synchronous wheel (9) are both 23 teeth, and the pitch circle diameter is 36.30mm; the transmission ratio of the first driving synchronous wheel (2) and the first driven synchronous wheel (4) and the transmission ratio of the second driving synchronous wheel (7) and the second driven synchronous wheel (9) are both 1:2.

09.

8. The automatic waveguide switching structure using synchronous belt and low-speed servo motor transmission according to claim 4 or 5, characterized in that, The transmitting waveguide transmitting path (18) is used for connecting the BUC signal transmitting module (12) with the antenna left-handed signal transmitting port (14) or the antenna right-handed signal transmitting port (15), and outputting satellite communication transmitting signals; the transmitting waveguide release path (19) is used for connecting the antenna left-handed signal transmitting port (14) or the antenna right-handed signal transmitting port (15) with the transmitting signal free release end (16), and releasing idle transmitting signals; The receiving waveguide receiving path (25) is used for connecting the LNB signal receiving module (11) with the antenna left-handed signal receiving port (20) or the antenna right-handed signal receiving port (21), and receiving satellite beam signals; the receiving waveguide release path (24) is used for connecting the antenna left-handed signal receiving port (20) or the antenna right-handed signal receiving port (21) with the receiving signal free release end (22), and releasing idle receiving signals.

9. The automatic waveguide switching structure using synchronous belt and low-speed servo motor transmission according to claim 4 or 5, characterized in that, The materials of the first shell (26), the second shell (27), the first disc (28), the second disc (29), the first driving synchronous wheel (2), the first driven synchronous wheel (4), the second driving synchronous wheel (7) and the second driven synchronous wheel (9) are all aluminum alloy 6061, and the surface heat treatment level is T6.

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