CN204315727U - A kind of Navigation of Pilotless Aircraft antenna - Google Patents

Abstract

A drone navigation antenna, comprising an antenna, a vertical angle drive mechanism and a pitch angle drive mechanism, wherein the pitch axis is connected to the antenna transmission, and the pitch angle drive mechanism includes a pitch axis, a gear transmission pair and a pitch drive motor; The pitch drive motor is connected to the pitch shaft through a gear transmission pair, the gear transmission pair is composed of a driving gear and a driven gear; the driving gear is supported on the driving gear frame, and the driven gear is supported on the driven gear bracket . The utility model has a simple structure, avoids condensation and freezing phenomenon, and can work normally at low temperature. <u/>

Description

A UAV Navigation Antenna

technical field

The utility model relates to an antenna, in particular to a navigation antenna for unmanned aerial vehicles, which belongs to the technical field of antennas.

Background technique

Unmanned Aerial Vehicle (UAV) is the abbreviation of Unmanned Aerial Vehicle, which is a reusable aircraft driven by power, unmanned on board.

Generally, there are two types of navigation antennas for UAVs. One is a fixed installation antenna, such as a cable cable antenna, a hat antenna, a notch antenna, etc. Its structure is simple, but its aerodynamic resistance is large; the other is a movable installation. There are Γ-type antennas, T-type antennas, etc., which are characterized in that the antenna is usually stored inside the aircraft, and it is extended outside the skin of the aircraft during work, and the attitude adjustment and signal tracking are performed according to the signal strength. At present, movable mounted antennas are widely used on UAVs, but their mechanical structures often freeze due to the low temperature at high altitudes during use. In order to solve this problem, some UAVs adopt the anti-icing device of the radome on the windward side, as well as the technology of blowing ice and anti-condensation with hot air pipes. These technologies are either too expensive or the effect is not ideal.

Utility model content

The purpose of this utility model is to provide a navigation antenna for unmanned aerial vehicles, which can be freely adjusted within 0-360° of the horizontal axis and 0-80° of the pitch axis, and does not condense at high altitudes. freeze.

Problem described in the utility model is realized through the following technical solutions:

A drone navigation antenna, comprising an antenna, a vertical angle drive mechanism and a pitch angle drive mechanism, wherein the pitch axis is connected to the antenna transmission, and the pitch angle drive mechanism includes a pitch axis, a gear transmission pair and a pitch drive motor; The pitch drive motor is connected to the pitch shaft through a gear transmission pair, the gear transmission pair is composed of a driving gear and a driven gear; the driving gear is supported on the driving gear frame, and the driven gear is supported on the driven gear bracket .

The above-mentioned unmanned aerial vehicle navigation antenna, the antenna rotating sealing ring is set between the antenna and the horizontal rotating motor seat, the driven gear rotating sealing ring is set between the driven gear bracket and the driven gear; the driving gear frame and the driving The driving gear sealing ring is arranged between the gears; the pitch motor rotating sealing ring is arranged between the pitch driving motor and the driving gear, the antenna rotating sealing ring, the driven gear rotating sealing ring, the driving gear sealing ring, the The rotary sealing ring of the pitching motor is made of polytetrafluoroethylene gasket.

In the above drone navigation antenna, the driven gear and the driving gear are sector gears, and the central angle corresponding to the sector plane of the sector gear is 45°-80°.

The above-mentioned unmanned aerial vehicle navigation antenna, a horizontal micro switch is set in the horizontal rotation motor seat, and the contact of the horizontal micro switch touches and presses the horizontal zero position pressure bar; a pitch micro switch is set in the driving gear frame, and the pitch micro switch The contact of the dynamic switch is in contact with the acute angle end of the driving gear.

The utility model has the following characteristics:

The utility model is provided with a vertical angle driving mechanism and a pitching angle driving mechanism. The vertical angle driving mechanism drives the antenna to rotate through a horizontal rotation motor, so that the antenna can freely adjust the rotation angle within 0-360° of the horizontal axis, and the pitching angle driving mechanism is driven by a sector. The gear is connected with the driven gear, which drives the pitch axis to do the pitch movement, so that the antenna can freely adjust the rotation angle within the range of 0-80° of the pitch axis, and a sealing ring is set on the mutual rotation of the antenna transmission mechanism, and the sealing ring is made of polytetrafluoroethylene The gasket avoids the phenomenon of condensation and icing.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model (the pitch angle of the antenna is 0°);

Fig. 2 is a structural schematic diagram of the utility model, (the pitch angle of the antenna is 80°);

Fig. 3 is the front view of Fig. 1;

Fig. 4 is the top view of Fig. 1;

5 is a schematic diagram of the structure of the antenna end;

Fig. 6 is a schematic diagram of the pitch drive motor and the supporting part of the driving gear;

Fig. 7 is a schematic diagram of the supporting part of the driven gear;

Fig. 8 is a schematic diagram of the structure of the pitch axis.

The labels in the figure are represented as: 1. Antenna, 2. Horizontal rotation motor base, 3. Pitch axis, 4. Driven gear bracket, 5. Driven gear, 6. Driving gear, 7. Pitch drive motor bracket, 8. Pitch driving motor, 9. Base, 10. Antenna rotating seal ring, 11. Pin shaft, 12. Pitch micro switch 13. Driven gear rotating seal ring, 14. Pitch motor rotating seal ring, 15. Driving gear seal ring, 16. Drive gear bracket, 17. Pin, 18. Horizontal rotation motor fixing screw, 19. Horizontal micro switch, 20. Horizontal zero bezel, 21. Horizontal zero bead fastening screw, 22. Pitch axis connecting screw, 23 , Horizontal rotation motor, 24, driving gear bracket fixing screw, 25, driving gear rotating bearing, 26, driving gear shaft key bar, 27, driving gear shaft, 28, pitch driving motor shaft pin, 29, pitch driving motor bracket fixing screw , 30, driven gear shaft key bar, 31, driven gear rotary bearing, 32, driven gear shaft, 33, driven gear bracket fixing screw.

Detailed ways

Referring to accompanying drawings 1, 4, 5, the utility model comprises antenna 1, vertical rotation angle drive mechanism and pitch rotation angle drive mechanism.

The vertical corner driving mechanism includes a horizontal rotation motor 23, a horizontal zero-position bead 20 and a horizontal rotation motor seat 2. The horizontal rotation motor 23 has two output shafts before and after. The front output shaft of the horizontal rotation motor 23 is connected to the antenna 1 through a pin 17, and the rear output shaft Connect the horizontal zero-position bezel 19, the horizontal rotation motor 23 is arranged inside the horizontal rotation motor seat 2, and the vertical rotation angle driving mechanism controls the antenna 1 to freely adjust the rotation angle within the horizontal axis 0-360°;

The pitch angle driving mechanism includes a pitch shaft 3, a gear transmission pair and a pitch drive motor 8, and the pitch drive motor 8 is connected to the pitch shaft 3 through a gear transmission pair. The driving gear 6 is supported on the driving gear frame 16 , and the driven gear 5 is supported on the driven gear bracket 4 . The pitch drive motor 8 and the pitch micro switch 12 are fixed on the driving gear frame 16, the driven gear bracket 4 and the pitch drive motor bracket 7 are fixed on the base 9, and the pitch angle driving mechanism controls the antenna 1 within the pitch axis 0-80° Freely adjust the pitch angle.

Referring to accompanying drawing 4, antenna rotating sealing ring 10 is installed between antenna 1 and horizontal rotation motor base 2, driven gear rotating sealing ring 13 is installed between driven gear bracket 4 and driven gear 5; Drive gear seal ring 15 is installed between 6, pitch motor rotating seal ring 14 is installed between pitch drive motor 8 and drive gear 6.

Antenna rotating sealing ring 10, driven gear rotating sealing ring 13, driving gear sealing ring 15, and pitching motor rotating sealing ring 14 adopt polytetrafluoroethylene gaskets. Polytetrafluoroethylene has high temperature resistance, low temperature resistance, corrosion resistance, weather resistance, The characteristics of high lubrication and non-adhesion, using the characteristics of non-adhesion and high lubrication of PTFE, the transmission mechanism of the antenna is not condensed and frozen at high altitude.

Referring to accompanying drawings 6 and 7, the driven gear 5 and the driving gear 6 are sector gears, and the central angle corresponding to the sector plane of the sector gears is 45°-80°. The pitch axis makes a pitch motion, so that the antenna can freely adjust the rotation angle within the range of 0° to 80° on the pitch axis.

Referring to accompanying drawing 5, the horizontal microswitch 19 is arranged in the horizontal rotation motor base 2, and when the horizontal zero position bead 20 touches the horizontal microswitch 19 contacts fixed on the horizontal rotation motor base inner shell, the horizontal microswitch 19 Signal to the control system that the antenna is at zero horizontal position at this time. Based on this, the control system can calculate the rotation angle of the antenna and send a signal to the horizontal rotation motor. When the control system sends a control signal to the horizontal rotation motor, the front output shaft of the horizontal rotation motor rotates, thereby driving the antenna to rotate to the desired orientation.

The pitch micro switch 12 is arranged in the driving gear frame 16, and when the acute angle end of the driving gear 6 touches the contact of the pitch micro switch 12, the pitch micro switch 12 sends a signal to the control system, indicating that the antenna 1 is at the pitch zero position at this time , the control system can send a signal to the pitch drive motor 8 according to the rotation angle of the pitch axis. The pitch rotation motor 8 drives the pitch axis to rotate through the transmission mechanism, thereby driving the antenna to rotate to a desired orientation.

Claims (4)

1. An unmanned aerial vehicle navigation antenna, comprising an antenna (1), a vertical rotation angle drive mechanism and a pitch rotation angle drive mechanism, wherein the pitch axis is connected to the antenna transmission, characterized in that the pitch rotation angle drive mechanism includes a pitch axis (3 ), a gear transmission pair and a pitch drive motor (8); the pitch drive motor (8) is connected to the pitch shaft through a gear transmission pair, and the gear transmission pair is composed of a driving gear (6) and a driven gear (5) ; The driving gear (6) is supported on the driving gear frame (16), and the driven gear (5) is supported on the driven gear bracket (4). 2. The drone navigation antenna according to claim 1, characterized in that, an antenna rotating sealing ring (10) is set between the antenna (1) and the horizontal rotating motor base (2), and the driven gear bracket A driven gear rotating sealing ring (13) is set between (4) and the driven gear (5); a driving gear sealing ring (15) is set between the driving gear frame (16) and the driving gear (6); A pitch motor rotating sealing ring (14) is arranged between the pitch driving motor (8) and the driving gear (6), the antenna rotating sealing ring (10), the driven gear rotating sealing ring (13), the driving gear The sealing ring (15) and the rotating sealing ring (14) of the pitching motor adopt polytetrafluoroethylene gaskets. 3. The drone navigation antenna according to claim 2, characterized in that, the driven gear (5) and the driving gear (6) are sector gears, and the central angle corresponding to the sector plane of the sector gear is 45°- 80°. 4. The UAV navigation antenna according to claim 3, characterized in that, a horizontal micro switch (19) is set in the horizontal rotation motor base (2), and the contacts of the horizontal micro switch (19) are in contact with the horizontal The zero position bead (20) touches and presses; the pitch micro switch (12) is arranged in the driving gear frame (16), and the contact of the pitch micro switch (12) touches and presses with the acute angle end of the driving gear (5) .