Shipborne three-axis antenna turntable

Abstract

The utility model discloses a shipborne three-axis antenna turntable, which belongs to the technical field of antennas and comprises a base, the base is rotatably connected with a turntable surface through a turntable bearing, the turntable surface is connected with a power supply and an azimuth motor seat, the azimuth motor seat is connected with an azimuth motor through a first planetary reducer, and the azimuth motor is connected with a second planetary reducer through a second planetary reducer. The base is connected with an outer ring of the collector ring, and the base is connected with a shifting piece of the rotary joint; according to the utility model, the turntable main body is formed by splicing aluminum alloy materials, so that the weight is reduced, the cost is reduced, the turntable azimuth, pitching and transverse rolling three shafts of the turntable adopt gear transmission, the turntable has the characteristics of high reliability, high transmission precision and the like, and the turntable can realize azimuth, pitching and transverse rolling large-angle and high-speed rotation; swing and displacement (below five-level sea conditions) simultaneously generated by the ship in the course direction, the transverse direction and the longitudinal direction are counteracted, and the uninterrupted interactive transmission function of the antenna and the satellite is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of antennas, and in particular relates to a shipborne three-axis antenna turntable. Background Art

[0002] The shipborne three-axis antenna is mainly equipped on surface ship platforms. It uses satellite communication networks, anti-strong interference communication networks, and various civil and commercial communication satellites to provide broadband and anti-interference satellite communication means between ships and shore bases, ships, aircraft, and large merchant ships, realizing beyond-line-of-sight uninterrupted interactive transmission of voice, video, and data.

[0003] However, the existing antenna turntable may be affected by the sway and displacement of the ship in the heading, lateral and longitudinal directions, which may affect the effect of uninterrupted interactive transmission between the antenna turntable and the satellite. Therefore, a ship-borne three-axis antenna turntable is needed to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a shipborne three-axis antenna turntable to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shipborne three-axis antenna turntable, comprising a base, the base is rotatably connected to a turntable surface through a turntable bearing, the turntable surface is connected to a power supply, an azimuth motor seat is connected to the turntable surface, the azimuth motor seat is connected to the azimuth motor through a first planetary reducer, the base is connected to the outer ring of the merge ring, the base is connected to the shift piece of the rotary joint, the inner ring of the merge ring and the upper half of the rotary joint are connected to the turntable surface through a rotary joint fixing piece, the outer ring of the turntable bearing is meshed with an azimuth input gear, the azimuth input gear is connected to the output shaft of the first planetary reducer, and an azimuth zero position switch, three sets of motor drivers and a control box are installed on the turntable surface.

[0006] A column is connected to the turntable surface, and an inertial navigation system, a power divider and a beacon receiver are connected to the front of the column. A microwave switch and a Beidou module are connected to one side of the column. A roll motor seat and two sets of roll bearings are connected inside the column. The roll motor seat is sequentially connected to a second planetary reducer, a roll motor and a roll input gear, one of the roll bearings is rotatably connected to a roll shaft, and the other roll bearing is clamped on the outside of the roll input gear. A roll sector gear and a roll arm are sequentially connected to the outside of the roll shaft, and the roll input gear is meshed with the roll sector gear. A roll zero position switch is connected to the front of the column.

[0007] The two sides of the transmission end of the roll arm are respectively connected to the pitch motor seat and the roll counterweight, one side of the pitch motor seat is connected to the third planetary reducer and the pitch zero position switch, one side of the pitch motor seat is rotatably connected to the intermediate gear, the two output ends of the third planetary reducer are respectively installed with the pitch motor and the pitch input gear, the intermediate gear is meshed with the pitch input gear, four groups of pitch bearings are installed at both ends of the roll arm, the four groups of pitch bearings are respectively located at two groups at each end of the roll arm, two pitch rotation axes are clamped in the four pitch bearings, one of the pitch rotation axes is externally connected to the pitch fan gear and the pitch drive seat, the pitch fan gear is meshed with the intermediate gear, and the ends of the two pitch rotation axes that are close to each other are connected to the same antenna feed mounting plate.

[0008] The utility model describes a turntable for shipborne three-axis antenna, which can be interchangeably installed with various antenna feed communication systems such as Ku band, Ka band or Ku / Ka dual band, realizing the structural design requirements of universalization, integration and low cost of antenna turntable. The antenna turntable can realize azimuth rotation angle: 360° infinite rotation, pitch rotation angle: -15°~+120° (0° when the beam direction is horizontal), roll rotation angle of ±30°, the rotation speed of the three rotating axes can reach 100° / s, and the transmission system of the three axes adopts the transmission form of stepping motor + planetary reducer + gear, which has the characteristics of high reliability and high transmission accuracy, etc.

[0009] As a preferred implementation, four groups of shock absorbers are connected under the base.

[0010] As a preferred implementation, the roll sector gear is coaxial with the roll axis.

[0011] As a preferred implementation manner, the pitch rotation axis, the pitch sector gear and the pitch drive seat are coaxial.

[0012] As a preferred implementation manner, the position of the roll zero switch corresponds to the position of the roll sector gear.

[0013] As a preferred implementation manner, the position of the pitch zero switch corresponds to the position of the pitch sector gear.

[0014] As a preferred implementation, the main body of the turntable top is made of aluminum alloy material.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model is provided with a turntable table, an azimuth motor, a roll motor and a pitch motor. Since the turntable body is made of aluminum alloy material, not only the weight but also the cost are reduced. The structure not only meets the communication use requirements but also achieves the goal of universalization. It can be adapted to install ku, ka or ku / ka dual-band antenna feed systems between 0.9 meters and 1.2 meters. The azimuth, pitch and roll axes of the turntable are all gear-driven, with the characteristics of high reliability and high transmission accuracy. The turntable can realize large-angle and high-speed rotation of azimuth, pitch and roll to offset the sway and displacement of the ship in the heading, lateral and longitudinal directions at the same time (below level 5 sea conditions), and meet the uninterrupted interactive transmission function between the antenna and the satellite. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the rear-view stereoscopic structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the side view structure of the utility model.

[0020] In the figure: 1. base; 2. shock absorber; 3. turntable bearing; 4. turntable table; 5. azimuth motor seat; 6. azimuth motor; 7. azimuth input gear; 8. power supply; 9. motor driver; 10. control box; 11. azimuth zero switch; 12. first planetary reducer; 13. merge ring; 14. rotary joint fixing; 15. rotary joint; 16. column; 17. inertial navigation; 18. power divider; 19. beacon receiver; 20. microwave switch; 21. Beidou module; 22. roll bearing; 23. roll shaft; 24, roll input gear; 25, second planetary reducer; 26, roll motor; 27, roll arm; 28, roll sector gear; 29, roll zero switch; 30, roll motor seat; 31, pitch bearing; 32, pitch motor seat; 33, pitch drive seat; 34, third planetary reducer; 35, pitch motor; 36, pitch rotation axis; 37, antenna feed mounting plate; 38, roll counterweight; 39, pitch input gear; 40, intermediate gear; 41, pitch sector gear; 42, pitch zero switch. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with embodiments.

[0022] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] See also Figure 1-3 The utility model provides a shipborne three-axis antenna turntable, comprising a base 1, four groups of shock absorbers 2 are connected under the base 1, and the shock absorbers 2 are arranged, and 24 groups of shock absorbers are evenly installed between the hull and the turntable to reduce the damage to the turntable caused by the vibration of the hull;

[0024] The base 1 is rotatably connected to a turntable surface 4 through a turntable bearing 3. The main body of the turntable surface 4 is made of aluminum alloy. The turntable surface 4 is connected to a power supply 8. The turntable surface 4 is connected to an azimuth motor seat 5. The azimuth motor seat 5 is connected to an azimuth motor 6 through a first planetary reducer 12. By setting the azimuth motor 6, the azimuth motor 6 is used to drive the remaining components except the base 1 to rotate in the azimuth axis direction;

[0025] The base 1 is connected to the outer ring of the merge ring 13, and the base 1 is connected to the shifting piece of the rotary joint 15. The inner ring of the merge ring 13 and the upper part of the rotary joint 15 are connected to the turntable table 4 through the rotary joint fixing part 14. The outer ring of the turntable bearing 3 is meshed with the azimuth input gear 7, and the azimuth input gear 7 is connected to the output shaft of the first planetary reducer 12. An azimuth zero position switch 11, three sets of motor drivers 9 and a control box 10 are installed on the turntable table 4. By setting the azimuth zero position switch 11, the azimuth zero position switch 11 can realize azimuth zeroing.

[0026] A column 16 is connected to the turntable table 4, an inertial navigation system 17, a power divider 18 and a beacon receiver 19 are connected to the front of the column 16, a microwave switch 20 and a Beidou module 21 are connected to one side of the column 16, a roll motor seat 30 and two sets of roll bearings 22 are connected inside the column 16, a second planetary reducer 25, a roll motor 26 and a roll input gear 24 are sequentially connected to the roll motor seat 30, and the roll motor 26 is provided, and the roll motor 26 is used to drive the roll arm 27 and the pitch motor 35 to rotate in the direction of the roll axis 23;

[0027] One of the roll bearings 22 is rotatably connected to a roll shaft 23, and the other roll bearing 22 is clamped on the outside of a roll input gear 24. The outside of the roll shaft 23 is connected in sequence to a roll sector gear 28 and a roll arm 27. The roll sector gear 28 is coaxial with the roll shaft 23, and the roll input gear 24 is meshed with the roll sector gear 28. A roll zero position switch 29 is connected to the front of the column 16, and the position of the roll zero position switch 29 corresponds to the position of the roll sector gear 28.

[0028] The two sides of the transmission end of the roll arm 27 are respectively connected to the pitch motor seat 32 and the roll counterweight 38, one side of the pitch motor seat 32 is connected to the third planetary reducer 34 and the pitch zero switch 42, the position of the pitch zero switch 42 corresponds to the position of the pitch sector gear 41, one side of the pitch motor seat 32 is rotatably connected to the intermediate gear 40, the two output ends of the third planetary reducer 34 are respectively installed with the pitch motor 35 and the pitch input gear 39, by setting the pitch motor 35, the pitch motor 35 is used to drive the rotating shaft and the antenna feed mounting plate 37 to rotate the pitch axis;

[0029] The intermediate gear 40 is meshed with the pitch input gear 39. Four sets of pitch bearings 31 are installed at both ends of the roll arm 27. The four sets of pitch bearings 31 are respectively located at two sets at both ends of the roll arm 27. Two pitch rotation shafts 36 are clamped in the four pitch bearings 31. One of the pitch rotation shafts 36 is externally connected to a pitch sector gear 41 and a pitch drive seat 33. The pitch rotation shaft 36, the pitch sector gear 41 and the pitch drive seat 33 are coaxial. The pitch sector gear 41 is meshed with the intermediate gear 40. The ends of the two pitch rotation shafts 36 that are close to each other are connected to the same antenna feed mounting plate 37.

[0030] The turntable of the three-axis antenna adopts the three-axis structure of azimuth + roll + pitch, which can realize the rotation range of the antenna azimuth 360°, pitch -15°~120° and roll ±30°. The rotation of the three axes of azimuth, pitch and roll offsets the displacement of the ship in the heading, longitudinal and lateral directions, ensuring that the antenna feed communication system is always aligned with the target satellite, achieving uninterrupted interactive transmission.

[0031] The working principle and use process of the utility model are as follows: when the turntable needs to be used, the control box 10 issues a command, the power supply 8 supplies power, and the motor driver 9 controls the azimuth motor 6 to rotate after receiving the command from the control box 10. The rotating azimuth motor 6 drives the azimuth input gear 7 to rotate through the first planetary reducer 12, and the rotating azimuth input gear 7 drives the turntable table 4 to rotate through the turntable bearing 3. The rotating turntable table 4 drives all the devices thereon to rotate together, and the rotating swivel joint fixing member drives the inner ring of the merge ring 13 and the upper half of the swivel joint 15 to rotate synchronously. At this time, the turntable can rotate 360° infinitely;

[0032] When the control box 10 issues an instruction and the power supply 8 is powered, the motor driver 9 receives the instruction from the control box 10 to control the roll motor 26 to rotate, the rotating roll motor 26 drives the roll input gear 24 to rotate through the second planetary reducer 25, and the rotating roll input gear 24 drives the roll arm 27 to perform a roll rotation of an angle of ±30° through the roll sector gear 28 and the roll shaft 23;

[0033] When the control box 10 issues an instruction and the power supply 8 is powered, the motor driver 9 receives the instruction from the control box 10 to control the roll motor 26 to rotate, the rotating roll motor 26 drives the pitch input gear 39 to rotate through the third planetary reducer 34, the rotating pitch input gear 39 drives the pitch rotation axis 36 to rotate in the pitch bearing 31 through the intermediate gear 40 and the pitch sector gear 41, and the rotating pitch rotation axis 36 drives the antenna feed mounting plate 37 to perform a pitch rotation of -15° to +120°;

[0034] The azimuth, roll and pitch motors 35 in the turntable share a control box 10 and a power supply 8. Three groups of motor drivers 9 control one of the azimuth, roll and pitch motors respectively. The azimuth, roll and pitch axes are all equipped with zero position switches to achieve the homing function.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shipborne three-axis antenna turntable, comprising a base (1), characterized in that: The base (1) is rotatably connected to a turntable surface (4) via a turntable bearing (3), the turntable surface (4) is connected to a power source (8), the turntable surface (4) is connected to an azimuth motor seat (5), the azimuth motor seat (5) is connected to an azimuth motor (6) via a first planetary reducer (12), the base (1) is connected to an outer ring of a collector ring (13), the base (1) is connected to a shifting piece of a rotary joint (15), the inner ring of the collector ring (13) and the upper half of the rotary joint (15) are connected to the turntable surface (4) via a rotary joint fixing piece (14), the outer ring of the turntable bearing (3) is meshed with an azimuth input gear (7), the azimuth input gear (7) is connected to an output shaft of the first planetary reducer (12), and an azimuth zero position switch (11), three sets of motor drivers (9) and a control box (10) are installed on the turntable surface (4); The turntable table (4) is connected to a column (16), the front of the column (16) is connected to an inertial navigation system (17), a power divider (18) and a beacon receiver (19), one side of the column (16) is connected to a microwave switch (20) and a Beidou module (21), the column (16) is connected to a roll motor seat (30) and two sets of roll bearings (22), the roll motor seat (30) is connected in sequence to a second planetary reducer (25), a roll motor (21) and a second planetary reducer (25). (26) and a roll input gear (24), wherein one of the roll bearings (22) is rotatably connected to a roll shaft (23), and the other roll bearing (22) is clamped outside the roll input gear (24), and the roll shaft (23) is connected to a roll sector gear (28) and a roll arm (27) in sequence outside, and the roll input gear (24) is meshed with the roll sector gear (28), and the front of the column (16) is connected to a roll zero position switch (29); The two sides of the transmission end of the roll arm (27) are respectively connected to a pitch motor seat (32) and a roll counterweight (38); one side of the pitch motor seat (32) is connected to a third planetary reducer (34) and a pitch zero position switch (42); one side of the pitch motor seat (32) is rotatably connected to an intermediate gear (40); two output ends of the third planetary reducer (34) are respectively installed with a pitch motor (35) and a pitch input gear (39); the intermediate gear (40) is meshed with the pitch input gear (39) Four groups of pitch bearings (31) are installed at both ends of the roll arm (27), and two groups of the four pitch bearings (31) are respectively located at both ends of the roll arm (27). Two pitch rotation shafts (36) are clamped inside the four pitch bearings (31), and one of the pitch rotation shafts (36) is externally connected to a pitch sector gear (41) and a pitch drive seat (33). The pitch sector gear (41) is meshed with an intermediate gear (40), and the ends of the two pitch rotation shafts (36) that are close to each other are connected to the same antenna feed mounting plate (37).

2. The shipborne three-axis antenna turntable according to claim 1, characterized in that: Four groups of shock absorbers (2) are connected under the base (1).

3. The shipborne three-axis antenna turntable according to claim 1, characterized in that: The rolling sector gear (28) is coaxial with the rolling shaft (23).

4. The shipborne three-axis antenna turntable according to claim 1, characterized in that: The pitch rotation axis (36), the pitch sector gear (41) and the pitch driving seat (33) are coaxial.

5. The shipborne three-axis antenna turntable according to claim 1, characterized in that: The position of the roll zero position switch (29) corresponds to the position of the roll sector gear (28).

6. The shipborne three-axis antenna turntable according to claim 1, characterized in that: The position of the pitch zero switch (42) corresponds to the position of the pitch sector gear (41).

7. The shipborne three-axis antenna turntable according to claim 1, characterized in that: The main body of the turntable table top (4) is made of aluminum alloy material.

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