Antenna lifting device and RBN-DGNSS antenna system

Abstract

The utility model relates to an antenna lifting device and an RBN-DGNSS antenna system. The antenna lifting device comprises at least two sets of traction equipment and a control system. Wherein the traction equipment is connected to the antenna body; the traction equipment comprises a motor, a rotating wheel and a traction rope; wherein one end of the traction rope is connected to the end position of the antenna, and the other end of the traction rope is wound on the rotating wheel; the control system comprises a main controller and a plurality of frequency converters; wherein each frequency converter is connected to a motor of one group of traction equipment; the main controller outputs a frequency signal to act on the frequency converter to control the start, stop and stepless speed regulation of the motor; the motor drives the rotating wheel to wind and unwind the traction rope to lift the antenna body. According to the technical scheme, automatic lifting of the antenna is achieved, the stability of the antenna in the lifting process is ensured, the antenna maintenance efficiency is improved, the maintenance safety and convenience are improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of differential global satellite positioning systems, and in particular to an antenna lifting device and a RBN-DGNSS antenna system. Background Art

[0002] Guidelines for application and management of marine radio beacon: differential global navigation satellite system, RBN-DGNSS is the main positioning and navigation system at sea, which ensures the safety of ships' navigation at sea by providing users with all-weather, high-precision navigation assistance and other services.

[0003] RBN-DGNSS station is an important infrastructure of RBN-DGNSS system. The antenna used by RBN-DGNSS station is usually an inverted T-type antenna, which is the core component of RBN-DGNSS station. It is high and long. When the antenna body needs to be maintained, it must be raised and lowered. The antenna must be lowered first, and then lifted and restored to its original position after maintenance to ensure that the antenna parameters remain unchanged and do not affect the operation of the transceiver system.

[0004] At present, during the antenna lifting operation, the lifting is mainly carried out through rotating winches on both sides of the tower. These lifting equipment have poor safety and low positioning accuracy, resulting in low overall maintenance efficiency of the antenna. Utility Model Content

[0005] In order to solve one of the above-mentioned defects, the present application provides an antenna lifting device and a RBN-DGNSS antenna system to improve the antenna maintenance efficiency.

[0006] An antenna lifting device, comprising: at least two sets of traction equipment and a control system; wherein the traction equipment is connected to the antenna body;

[0007] The traction device comprises: a motor, a rotating wheel and a traction rope; wherein one end of the traction rope is connected to the end position of the antenna, and the other end of the traction rope is wound on the rotating wheel;

[0008] The control system includes a main controller and a plurality of frequency converters; wherein each frequency converter is respectively connected to a group of motors of traction equipment;

[0009] The main controller outputs a frequency signal to actuate the frequency converter to control the start, stop and stepless speed regulation of the motor; the motor drives the rotating wheel to retract and release the traction rope to lift and lower the antenna body.

[0010] In one embodiment, the antenna lifting device, the traction equipment further includes: a pulley used in conjunction with the traction rope; wherein the pulley is fixed on the antenna tower, and the traction rope passes around the pulley.

[0011] In one embodiment, the antenna lifting device, the traction equipment also includes: an encoder arranged on the rotating wheel of the motor and connected to the main controller, which is used to measure the rotation angle of the motor and output the number of pulses to the main controller to calculate the movement length of the traction rope.

[0012] In one embodiment, the antenna lifting device further includes: at least one proximity switch provided on the traction rope and a switch detector used in conjunction with the proximity switch;

[0013] The switch detector is arranged on the antenna tower, at both sides of the traction rope;

[0014] The detector is connected to the main controller and is used to output a switch signal to the main controller when detecting the proximity of the proximity switch, so as to control the motor to stop rotating.

[0015] In one embodiment, the antenna lifting device, the proximity switch includes: a positioning switch and a deceleration switch; wherein, when the deceleration switch approaches the switch detector, the switch detector outputs a deceleration signal to the main controller to control the motor to decelerate, and when the positioning switch approaches the switch detector, the switch detector outputs a stop signal to the main controller to control the motor to stop.

[0016] In one embodiment, the antenna lifting device further comprises: a plurality of acceleration sensors disposed on the antenna body, wherein each acceleration sensor is connected to the main controller;

[0017] The acceleration sensor detects acceleration and outputs an electrical signal to the main controller for detecting the balance state of the antenna.

[0018] In one embodiment, the antenna lifting device further comprises: an industrial computer connected to the main controller, wherein the industrial computer is also connected to at least one camera installed on the antenna tower;

[0019] The industrial computer is used to remotely control the main controller, and the camera is used to capture an image of the antenna at its original position.

[0020] An RBN-DGNSS antenna system comprises: an antenna tower A and an antenna tower B, an inverted T-shaped antenna arranged between the antenna tower A and the antenna tower B, and the antenna lifting device;

[0021] Wherein, the inverted T-shaped antenna is connected to antenna tower A and antenna tower B through the antenna lifting device.

[0022] In one embodiment, the RBN-DGNSS antenna system, the antenna lifting device includes a first main traction device respectively arranged on antenna tower A and a second main traction device respectively arranged on antenna tower B, for lifting the inverted T-shaped antenna; wherein,

[0023] The motors of the first main traction device and the second main traction device are arranged at the bottom of the antenna tower, the pulley is arranged at the top of the antenna tower, and the traction ropes of the antenna tower A and the antenna tower B are connected to the center position of the fixed tripods at both ends of the inverted T-shaped antenna.

[0024] In one embodiment, the RBN-DGNSS antenna system, the antenna lifting device further includes a first auxiliary traction device and a second auxiliary traction device provided on antenna tower A, and a third auxiliary traction device and a fourth auxiliary traction device provided on antenna tower B, for adjusting the horizontality of the inverted T-shaped antenna;

[0025] The traction ropes of the first traction device, the second traction device, the third traction device and the fourth traction device are respectively connected to two bottom corners of the fixed tripod of the antenna.

[0026] The technical solution of the above embodiment realizes the automatic lifting of the antenna, ensures the stability of the antenna lifting process, improves the efficiency of antenna maintenance, improves the safety and convenience of maintenance, and reduces maintenance costs.

[0027] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0029] Figure 1 is a schematic diagram of the structure of an RBN-DGNSS antenna system according to an embodiment;

[0030] Figure 2 is a schematic structural diagram of an antenna lifting device according to an embodiment;

[0031] Figure 3 is a top view schematic diagram of an example T-shaped twin tower antenna;

[0032] Figure 4 is a side view of an example T-shaped twin tower antenna;

[0033] Figure 5 is an electrical structure diagram of an RBN-DGNSS antenna system according to an embodiment. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0035] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, but does not exclude the presence or addition of one or more other features, integers, steps, operations.

[0036] When maintaining the conventional RBN-DGNSS station T-type antenna, before lowering the antenna, professionals first climb to the top of the tower and mark the original fixed position of the antenna so that the antenna can be restored to its original position after it is raised again, ensuring that the antenna system parameters remain unchanged and the operation of the transceiver system is not affected. At the same time, professionals also need to manually loosen the metal hook used to adjust the level of the antenna and tie a rope to ensure that the hook for adjusting the level of the antenna can be restored and fixed after the antenna is raised. During the antenna raising and lowering process, professional tower climbers are required to cooperate with the personnel at the bottom of the tower to operate. During the process, multiple people are required to cooperate and turn the winches on both sides of the tower at the same time to make the antenna rise and fall smoothly. The whole lifting process consumes a lot of human resources. During the antenna lifting process, it is easy to slip when turning the winch, causing the antenna to fall rapidly, damaging the antenna and posing a safety risk. When the antenna is raised to the top, it is difficult to ensure that the turntables at both ends of the antenna are in step with each other. When the antenna reaches the top, the positioning is inaccurate. The balance of the antenna is achieved by fine-tuning a single turntable, which relies on professionals to make original marks on the top of the tower in advance. During the fine-tuning process, multiple attempts are required to adjust the balance, which is time-consuming and has low positioning accuracy.

[0037] To this end, the present application provides an antenna lifting device that can be used for the installation of T-type antennas at RBN-DGNSS stations. The antenna lifting device can be used to automatically lift the antenna during daily maintenance. The antenna lifting device provided by the present application can be used for various types of antenna maintenance and lifting at RBN-DGNSS stations.

[0038] refer to Figure 1 and Figure 2 As shown, Figure 1 is a schematic diagram of the structure of an RBN-DGNSS antenna system according to an embodiment. Figure 2The present invention is a schematic diagram of the structure of an antenna lifting device according to an embodiment, wherein the antenna lifting device comprises: at least two sets of traction devices 200 and a control system 100; wherein the traction device 200 is connected to the antenna body 05; further, the traction device 200 also comprises a pulley 03; wherein the pulley 03 is fixed to the antenna tower, and the traction rope 04 passes around the pulley 03, so as to achieve the function of fixing the direction of the traction rope 04; the traction device 200 comprises: a motor 022, a rotating wheel 027 and a traction rope 04; wherein one end of the traction rope 04 is connected to the end position of the antenna, and the other end of the traction rope 04 is wound on the rotating wheel 027; the control system 100 comprises a main controller 01 and a plurality of frequency converters 021; illustratively, the main controller 01 may adopt a PLC (Programmable Logic Controller) Controller, programmable logic controller), each inverter 021 is respectively connected to a group of motors 022 of traction equipment 200; the main controller 01 outputs a frequency signal to actuate the inverter 021, controls the start, stop and stepless speed regulation of the motor 022; the motor 022 drives the wheel 027 to retract and release the traction rope 04 to lift and lower the antenna body 05.

[0039] For example, the antenna lifting device of the above-mentioned embodiment uses a main controller 01, a frequency converter 021, a motor 022, a pulley 03, a traction rope 04 and other equipment to design a set of technical solutions that can automatically lift the antenna. The main controller 01 activates the frequency converter 021 by outputting a frequency signal to control the start, stop and stepless speed regulation of the motor 022. It is suitable for high-lift and high-load application scenarios. In order to achieve high-precision positioning and stepless speed regulation, the frequency converter 021 can be used to achieve a soft start of the motor 022, thereby avoiding excessive current at the moment of starting the motor 022, which causes an impact on the motor 022. At the same time, the frequency converter 021 is used to achieve a smooth start and smooth acceleration and deceleration of the motor 022, thereby avoiding sudden acceleration or deceleration causing the antenna to shake. The efficiency of antenna maintenance is improved, the safety and convenience of maintenance are improved, and the maintenance cost is reduced.

[0040] In one embodiment, it is considered that when raising and lowering the antenna, it is necessary to maintain the stable raising and lowering of the antenna to prevent the wind from tilting the antenna, thereby affecting the parameters of the antenna system; in particular, the antenna must be accurately positioned during the raising process, especially after each maintenance, it needs to return to the initial position, the initial position is an adjusted position, the antenna system parameters are set according to the initial position, if the antenna cannot be restored to the initial position after each maintenance, the parameters of the antenna system will change, thereby affecting the transmission efficiency of the transmitter; in the operation of lowering and raising the antenna, the movement of the antenna must be accurately positioned, although the positioning accuracy of the antenna can be slightly lower during the descent process, and only the predetermined stroke needs to be determined, but during the raising of the antenna, accurate positioning is required.

[0041] To this end, in the antenna lifting device of the present application, the traction device 200 further includes an encoder 023 disposed on the rotating wheel 027 of the motor 022 and connected to the main controller 01, which is used to measure the rotation angle of the motor 022 and output the number of pulses to the main controller 01, and calculate the movement length of the traction rope 04. Exemplarily, during the control process, the main controller 01 can apply a closed-loop PID (proportional-integral-derivative control) intelligent control algorithm to achieve automatic control, thereby achieving the purpose of automatically lifting the antenna.

[0042] In one embodiment, an encoder 023 is provided on the rotating wheel 027 of the motor 022. The linear motion relies on friction to drive the rotating wheel 027 of the motor 022 to rotate. The rotating wheel 027 drives the encoder 023 to measure the rotation angle. The encoder 023 measures the rotation angle of the motor 022 and outputs the number of pulses, which are sent to the main controller 01 in real time. The main controller 01 calculates the movement length of the traction rope 04 according to the number of pulses. The calculation formula can be as follows: L=N×M, M=2πr / k; wherein L is the movement length of the traction rope 04, N is the number of pulses, r is the radius of the rotating wheel 027 of the motor 022, M is the length corresponding to one pulse, and k is the number of lines of the encoder 023. The travel of the traction rope 04 is obtained by calculating the movement length of the traction rope 04, and the relationship between the current travel of the traction rope 04 and the total travel is continuously calculated to form feedback data, and the motor 022 is driven to move, thereby finally achieving travel positioning.

[0043] As in the technical solution of the above-mentioned embodiment, the linear movement of the traction rope 04 during the lifting and lowering of the antenna is calculated through the encoder 023, the motor 022 wheel 027 rotates to drive the encoder 023 to measure the rotation angle, and then the number of pulses returned by the encoder 023 is calculated to finally calculate the movement length of the traction rope 04, thereby realizing the function of accurately positioning the lifting and lowering process of the antenna.

[0044] In one embodiment, in order to further improve the accuracy of the calculation of the antenna's travel and the end positioning during the lifting process, and ensure the stability of the antenna during the lifting process, the antenna lifting device of the present application may also include: at least one proximity switch 042 provided on the traction rope 04 and a switch detector 041 used in conjunction with it; the switch detector 041 is provided on the antenna tower, located on both sides of the traction rope 04; the detector is connected to the main controller 01, and is used to output a switch signal to the main controller 01 when detecting the proximity switch 042 approaching, so as to control the motor 022 to stop rotating. In this way, the switch signal can be used to achieve precise positioning, and the proximity switch 042 is provided at the end of the traction rope 04 to accurately position the end of the movement length of the traction rope 04.

[0045] As an example, a deceleration switch 042b and a positioning switch 042a are sequentially provided at the end of the traction rope 04. When the deceleration switch 042b approaches the switch detector 041, the switch detector 041 outputs a deceleration signal to the main controller 01 to control the motor 022 to decelerate. Further, when the positioning switch 042a approaches the switch detector 041, the switch detector 041 outputs a stop signal to the main controller 01 to control the motor 022 to stop.

[0046] Specifically, a switch detector 041 is set on the top of the antenna tower. The switch detector 041 is located on both sides of the traction rope 04. The deceleration switch 042b and the proximity switch 042 move with the traction rope 04. The switch detector 041 can sense the switch signals of the deceleration switch 042b and the proximity switch 042 and send them to the main controller 01. The main controller 01 controls the motor 022 to slowly decelerate when the switch signal triggered by the deceleration switch 042b is detected based on the received switch signal. When the switch signal triggered by the proximity switch 042 is detected, the main motor 022 is controlled to stop.

[0047] As in the technical solution of the above embodiment, the switch signal can be used to accurately position the terminal stroke of the antenna during the process of raising the antenna, so that the antenna can rise slowly and smoothly to the destination position.

[0048] In one embodiment, in order to realize real-time monitoring of the posture of the antenna during the antenna lifting process, so as to promptly issue warnings and adjustments when abnormalities occur; the antenna lifting device of the present application may also include: a plurality of acceleration sensors 06 arranged on the antenna body 05, wherein each acceleration sensor 06 is connected to the main controller 01; the acceleration sensor 06 detects acceleration and outputs an electrical signal to the main controller 01 for detecting the balance state of the antenna.

[0049] Specifically, the acceleration sensor 06 can detect the real-time motion change parameters of the antenna during the lifting process and send them to the main controller 01; the main controller 01 monitors the real-time balance of the antenna during the lifting process according to the real-time motion change parameters, and promptly issues an early warning when the balance of the antenna is abnormal. For example, four consistent acceleration sensors 06 can be set at the four corners of the fixed tripod of the antenna. During the lifting process of the antenna, these acceleration sensors 06 will output electrical signals. At this time, the main controller 01 can use the electrical signals V output by the four acceleration sensors 06 1 、V 2 、V 3 、V 4 ; By comparing four electrical signals V 1 、V 2 、V 3 、V 4 The difference between the two ij , when ΔVij Greater than the set threshold ΔV 0 This indicates that the movement speeds of the four corners of the antenna are different, so that the imbalance state of the current antenna can be detected quickly and in real time. If the wind is strong, timely warning and adjustment can be made for abnormal situations.

[0050] As in the technical solution of the above-mentioned embodiment, the real-time balance state of the antenna is measured by the electrical signals output by acceleration sensors at multiple positions. Since the acceleration sensors are the same, if they are in a stable state, the output electrical signals are the same. When there is an imbalance during movement, there will be large differences between the electrical signals. Therefore, through the above-mentioned technical solution, it is only necessary to simply calculate the difference between the two electrical signals to achieve the monitoring purpose, thereby ensuring the response speed.

[0051] In one embodiment, in order to realize remote control of the main controller 01 and visualize the lifting process, the antenna lifting device of the present application may further include: an industrial computer 07 connected to the main controller 01, wherein the industrial computer 07 is connected to the main controller 01 via a network; the industrial computer 07 is used to remotely control the main controller 01. Furthermore, the industrial computer 07 is also connected to at least one camera 08, which is installed on the top of the antenna tower and is used to capture images of the antenna at its original position.

[0052] Specifically, the function of remotely controlling the main controller can be realized through the industrial computer 07, and the state of the antenna rising and falling and the state of the antenna returning to a fixed position can be photographed in real time through the camera 08.

[0053] Exemplarily, the control system 100 may include an on-site operation box and a remote control terminal, wherein on-site debugging operations and emergency parking can be performed through the on-site operation box, and the industrial computer 07 through the remote control terminal can be placed in the machine room, so that the on-site situation can be more intuitively seen in the control room, and the on-site video can also be displayed in real time on the human-machine interface, which is convenient for the operator to assist in judging the real-time situation of the antenna lifting and lowering. The operator can understand the dynamic and static characteristics and performance indicators of the system in real time through the human-machine interface of the industrial computer 07.

[0054] Exemplarily, the industrial computer 07 may also include the functions of receiving detection parameters and operating status data of on-site equipment, transmitting various control instructions to the main controller 01, modifying system parameter values, storing data, etc. The operator can see the real-time status of the antenna lifting and lowering on the human-machine interface, including the speed of the motor 022, the frequency output by the inverter 021, the real-time height of the antenna lifting and lowering, the start and stop signals of the motor 022, and equipment fault information.

[0055] The antenna lifting device of each embodiment described above can be used in the RBN-DGNSS system to control the lifting of the antenna body 05. In order to make the technical solution of the present application clearer, the use of the antenna lifting device in the RBN-DGNSS antenna system is described in the following example.

[0056] like Figure 3 to Figure 4 As shown, Figure 3 This is a top view of an example T-shaped twin-tower antenna. Figure 4 is a side view of an example T-shaped twin tower antenna; Figure 3 and Figure 4 All of them are partial structural schematic diagrams. The RBN-DGNSS antenna system of this embodiment includes: antenna tower A and antenna tower B, an inverted T-shaped antenna 50 arranged between antenna tower A and antenna tower B, that is, the antenna body 05 includes the inverted T-shaped antenna 50, and the antenna lifting device of any of the aforementioned embodiments; wherein the inverted T-shaped antenna 50 is connected to antenna tower A and antenna tower B through the antenna lifting device.

[0057] As in the technical solution of the above embodiment, the RBN-DGNSS antenna system can realize automatic lifting and lowering of the antenna during maintenance through the antenna lifting device provided in the previous embodiment, thereby realizing automatic lifting and lowering of the antenna, ensuring the smoothness of the antenna lifting process, improving the efficiency of antenna maintenance, improving the safety and convenience of maintenance, and reducing maintenance costs.

[0058] In one embodiment, for the application of the RBN-DGNSS antenna system on the RBN-DGNSS station, under the double-tower structure, the antenna lifting device includes a first main traction device 201 respectively arranged on antenna tower A and a second main traction device 202 arranged on antenna tower B, which are used to lift the inverted T-shaped antenna 50; wherein, the motor 022 of the first main traction device 201 and the second main traction device 202 is arranged at the bottom of the antenna tower, the pulley 03 is arranged at the top of the antenna tower, and the traction rope 04 of antenna tower A and antenna tower B is connected to the center position of the fixed tripod at both ends of the inverted T-shaped antenna 50.

[0059] In one embodiment, in the RBN-DGNSS antenna system of the present application, the antenna lifting device may also include a first auxiliary traction device 203 and a second auxiliary traction device 204 arranged on antenna tower A, and a third auxiliary traction device 205 and a fourth auxiliary traction device 206 arranged on antenna tower B, which are used to adjust the horizontality of the inverted T-shaped antenna 50; the traction rope 04 of the first auxiliary traction device 203, the second auxiliary traction device 204, the third auxiliary traction device 205 and the fourth auxiliary traction device 206 are respectively connected to the two bottom corners of the fixed tripod of the antenna.

[0060] For example, in order to solve the defects of the antenna of the conventional RBN-DGNSS station during maintenance, the RBN-DGNSS antenna system of the present application includes an antenna tower A tower and an antenna tower B tower, and the AB ends of the antenna are respectively connected by a fixed tripod; Figure 5 As shown, Figure 5 The electrical structure diagram of the RBN-DGNSS antenna system of an embodiment includes: a main controller 01, a first main traction device 21, a first main pulley 31 and a first main traction rope 41, and a second main traction device 22, a second main pulley 32 and a second main traction rope 42; the first main traction device 21 is connected to the center position of the fixed tripod 51 at the A end of the antenna, and the second main traction device 22 is connected to the center position of the fixed tripod 52 at the B end of the antenna; the first auxiliary traction device 23 and the second auxiliary traction device 24 are connected to the fixed tripod 51 at the A end of the antenna. The third auxiliary traction device 25 and the fourth auxiliary traction device 26 are connected to the two bottom corner positions of the fixed tripod 52 at the B end of the antenna; further, it also includes the first auxiliary traction device 23 and the second auxiliary traction device 24 at the top of the antenna tower A, and the third auxiliary traction device 25 and the fourth auxiliary traction device 26 at the top of the antenna tower B; correspondingly, the first auxiliary pulley 33 and the second auxiliary pulley 34 are also provided at the top of the antenna tower A, and the third auxiliary pulley 35 and the fourth auxiliary pulley 36 are also provided at the top of the antenna tower B.

[0061] Among them, the first main traction equipment 21 may include a first main frequency converter 211 and a first main motor 212; wherein the first main frequency converter 211 is connected to the main controller 01, and the wheel of the first main motor 212 is wound around the first main traction rope 41; the second main traction equipment 22 includes a second main frequency converter 221 and a second main motor 222; the second main frequency converter 221 is connected to the main controller 01, and the wheel of the second main motor 222 is wound around the second main traction rope 42.

[0062] The corresponding first auxiliary traction device 23 may include a first auxiliary frequency converter 231 and a first auxiliary motor 232; wherein the first auxiliary frequency converter 231 is connected to the main controller 01, and the rotary wheel of the first auxiliary motor 232 winds up the first auxiliary traction rope 43; the second auxiliary traction device 24 includes a second auxiliary frequency converter 241 and a second auxiliary motor 242; wherein the second auxiliary frequency converter 241 is connected to the main controller 01, and the rotary wheel of the second auxiliary motor 242 winds up the second auxiliary traction rope 44; the third auxiliary traction device 25 includes a third auxiliary frequency converter 251 and a third auxiliary motor 252; wherein the third auxiliary frequency converter 251 is connected to the main controller 01, and the rotary wheel of the third auxiliary motor 252 winds up the third auxiliary traction rope 45; the fourth auxiliary traction device 26 includes a fourth auxiliary frequency converter 261 and a fourth auxiliary motor 262; wherein the fourth auxiliary frequency converter 261 is connected to the main controller 01, and the rotary wheel of the fourth auxiliary motor 262 winds up the fourth auxiliary traction rope 46.

[0063] Furthermore, a first main encoder 213 is provided on the rotating wheel of the first main motor 212, which is used to measure the rotation angle of the first main motor 212, and output the number of pulses and send it to the main controller 01 to calculate the movement length of the first main traction rope 41; a second main encoder 223 is provided on the rotating wheel of the second main motor 222, which is used to measure the rotation angle of the second main motor 222, and output the number of pulses and send it to the main controller 01 to calculate the movement length of the second main traction rope 42.

[0064] Correspondingly, the rotating wheel of the first sub-motor 232 may also be provided with a first sub-encoder 233 connected to the main controller 01, which is used to measure the rotation angle of the first sub-motor 232, and output the number of pulses and send it to the main controller 01 to calculate the movement length of the first sub-traction rope 43; the rotating wheel of the second sub-motor 242 may also be provided with a second sub-encoder 243 connected to the main controller 01, which is used to measure the rotation angle of the second sub-motor 242, and output the number of pulses and send it to the main controller 01 to calculate the movement length of the second sub-traction rope 44; the rotating wheel of the third sub-motor 252 may also be provided with a third sub-encoder 253 connected to the main controller 01, which is used to measure the rotation angle of the third sub-motor 252, and output the number of pulses and send it to the main controller 01 to calculate the movement length of the third sub-traction rope 45; the rotating wheel of the fourth sub-motor 262 may also be provided with a fourth sub-encoder 263 connected to the main controller 01, which is used to measure the rotation angle of the fourth sub-motor 262, and output the number of pulses and send it to the main controller 01 to calculate the movement length of the fourth sub-traction rope 46.

[0065] To this end, a first main proximity switch 411 is provided at the end of the first main traction rope 41, and a first main switch detector 412 is provided at the top of the antenna tower A and located on both sides of the first main traction rope 41; a second main proximity switch 421 is provided at the end of the second main traction rope 42, and a second main switch detector 422 is provided at the top of the antenna tower B and located on both sides of the second main traction rope 42; a first secondary proximity switch 431 is provided at the end of the first secondary traction rope 43, and a first secondary switch detector 431 is provided at the top of the antenna tower A and located on both sides of the first secondary traction rope 43 2; A second secondary proximity switch 441 is provided at the end of the second secondary traction rope 44, and a second secondary switch detector 442 is provided at the top of the antenna tower A and located on both sides of the second secondary traction rope 44; A third secondary proximity switch 451 is provided at the end of the third secondary traction rope 45, and a third secondary switch detector 452 is provided at the top of the antenna tower B and located on both sides of the third secondary traction rope 45; A fourth secondary proximity switch 461 is provided at the end of the fourth secondary traction rope 46, and a fourth secondary switch detector 462 is provided at the top of the antenna tower B and located on both sides of the fourth secondary traction rope 46. The industrial computer 07 is connected to the first camera 81 provided on the A tower and the second camera 82 provided on the B tower respectively; the first camera 81 is used to shoot the lifting state of the antenna A end and the state of the antenna A end returning to a fixed position; the second camera 82 is used to shoot the lifting state of the antenna B end and the state of the antenna B end returning to a fixed position.

[0066] As in the RBN-DGNSS antenna system of the above-mentioned embodiment, the two main traction devices 21, 22 and the main traction ropes 41, 42 are the main force points of the inverted T-shaped antenna 50, bearing the weight of the entire inverted T-shaped antenna 50. The main controller 01 can control the two main traction devices 21, 22 to automatically lift the antenna, thereby improving the convenience and efficiency of antenna maintenance and reducing maintenance costs. Furthermore, the horizontality of the inverted T-shaped antenna 50 can be adjusted through the four auxiliary traction devices 23, 24, 25, 26 and the four auxiliary traction ropes 43, 44, 45, 46, thereby improving the lifting stability, thereby ensuring the safety of antenna maintenance and avoiding affecting the antenna parameters.

[0067] As in the technical solution of the above-mentioned embodiment, by designing a set of optimized combined power sources, it is possible to improve the stability of the lifting equipment, optimize the equipment cost, and have the characteristics of high lift and high load. The frequency converter can be used to realize soft starting of the motor, achieve high-precision positioning and stepless speed regulation, avoid excessive current at the moment of motor starting, and cause impact on the motor. The frequency converter is used to realize smooth starting and smooth acceleration and deceleration of the motor, and avoid jitter of the antenna caused by sudden acceleration or deceleration.

[0068] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An antenna lifting device, characterized in that: include: At least two sets of traction equipment (200) and a control system (100); wherein the traction device (200) is connected to the antenna body (05); The traction device (200) comprises: a motor (022), a rotating wheel (027) and a traction rope (04); One end of the traction rope (04) is connected to the end position of the antenna, and the traction rope (04) The other end is wound on the rotating wheel (027); The control system (100) comprises a main controller (01) and a plurality of frequency converters (021); wherein: Each frequency converter (021) is respectively connected to a motor (022) of a group of traction equipment (200); The main controller (01) outputs a frequency signal to actuate the frequency converter (021) to control the start, stop and stepless speed regulation of the motor (022); the motor (022) drives the rotating wheel (027) to retract and release the traction rope (04) to raise and lower the antenna body (05).

2. The antenna lifting device according to claim 1, characterized in that: The traction device (200) further comprises: a pulley (03) used in conjunction with the traction rope (04); wherein the pulley (03) is fixed on the antenna tower, and the traction rope (04) passes around the pulley (03).

3. The antenna lifting device according to claim 1, characterized in that: The traction device (200) further comprises: an encoder (023) disposed on a rotating wheel (027) of the motor (022) and connected to the main controller (01), for measuring the rotation angle of the motor (022) and outputting a pulse number to the main controller (01), Calculate the movement length of the traction rope (04).

4. The antenna lifting device according to claim 2, characterized in that: Also includes: At least one proximity switch (042) provided on the traction rope (04) and a switch detector (041) used in conjunction with the proximity switch (042); The switch detector (041) is arranged on the antenna tower, and is located on both sides of the traction rope (04); The detector is connected to the main controller (01) and is used to output a switch signal to the main controller (01) when detecting the proximity of the proximity switch (042), thereby controlling the motor (022) to stop rotating.

5. The antenna lifting device according to claim 4, characterized in that: The proximity switch (042) comprises: a positioning switch (042a) and a deceleration switch (042b); wherein, when the deceleration switch (042b) When approaching the switch detector (041), the switch detector (041) outputs a deceleration signal to the main controller (01) to control the motor (022) to decelerate; when the positioning switch (042a) approaches the switch detector (041), the switch detector (041) outputs a stop signal to the main controller (01) to control the motor (022) to stop.

6. The antenna lifting device according to claim 1, characterized in that: Also includes: A plurality of acceleration sensors (06) are arranged on the antenna body (05), wherein each acceleration sensor (06) is connected to a main controller (01); The acceleration sensor (06) detects acceleration and outputs an electrical signal to the main controller (01) for detecting the balance state of the antenna.

7. The antenna lifting device according to claim 1, characterized in that: Also includes: An industrial computer (07) connected to the main controller (01), wherein the industrial computer (07) is also connected to at least one camera (08) installed on an antenna tower; The industrial computer (07) is used to remotely control the main controller (01), and the camera (08) is used to capture an image of the antenna at its original position.

8. An RBN-DGNSS antenna system, characterized in that: include: Antenna tower A and antenna tower B, an inverted T-shaped antenna (50) arranged between antenna tower A and antenna tower B, and an antenna lifting device as claimed in any one of claims 1 to 7; The inverted T-shaped antenna (50) is connected to antenna tower A and antenna tower B via the antenna lifting device.

9. The RBN-DGNSS antenna system according to claim 8, characterized in that: The antenna lifting device comprises a first main traction device (201) respectively arranged on antenna tower A and a second main traction device (202) arranged on antenna tower B, and is used to lift the inverted T-shaped antenna (50); wherein: The motors (022) of the first main traction device (201) and the second main traction device (202) are arranged at the bottom of the antenna tower, the pulley (03) is arranged at the top of the antenna tower, and the traction ropes (04) of the antenna tower A and the antenna tower B are connected to the center positions of the fixed tripods at both ends of the inverted T-shaped antenna (50).

10. The RBN-DGNSS antenna system according to claim 9, characterized in that: The antenna lifting device also includes a first auxiliary traction device (203) and a second auxiliary traction device (204) arranged on antenna tower A, and a third auxiliary traction device (205) and a fourth auxiliary traction device (206) arranged on antenna tower B, which are used to adjust the horizontality of the inverted T-shaped antenna (50); The traction rope (04) of the first traction device (203), the second traction device (204), the third traction device (205) and the traction rope (04) of the fourth traction device (206) are respectively connected to two bottom corner positions of the fixed tripod of the antenna.

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