High-stability azimuth-elevation pointing device

Abstract

The application relates to the technical field of pointing mechanism, in particular to a high-stability azimuth-elevation pointing device which comprises a base, a plurality of fixed stand columns arranged on the base, an elevation shaft driving assembly arranged above the base and fixedly connected with the base, an elevation motor, a screw rod assembly and an elevation control rod group, one end of the elevation control rod group being rotatably connected with the fixed stand column and the other end being rotatably connected with the screw rod assembly, a azimuth shaft driving assembly comprising a gear assembly arranged below the base and a azimuth shaft driving motor, the azimuth shaft driving motor being fixedly connected with the base, the tail of the azimuth shaft driving motor penetrating through the base and being connected with the gear assembly, and an antenna fixedly arranged on the elevation control rod group, wherein the elevation motor drives the screw rod assembly to control the elevation control rod group to arch or be flat, thereby driving the antenna to move up and down, and the azimuth shaft driving assembly drives the gear assembly to rotate, thereby driving the base to rotate around the azimuth shaft.

Description

Technical Field

[0001] This invention relates to the field of pointing mechanism technology, and in particular to a highly stable azimuth and pitch pointing device. Background Technology

[0002] With the rapid development of satellites and spacecraft in recent years, in order to meet the needs of capturing and tracking functions through payloads such as lasers and antennas, a rotatable mechanism is needed to complete the above functions, thus leading to the development of pointing mechanisms.

[0003] However, most existing pointing mechanisms suffer from the technical defect of multi-angle adjustment. Therefore, a pointing device that can be finely adjusted at multiple angles is needed to achieve more accurate capture and tracking. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a highly stable azimuth and pitch pointing device, comprising:

[0005] A base, on which several fixed columns are provided;

[0006] A pitch axis drive assembly is located above the base and fixedly connected to the base. The pitch axis drive assembly includes a pitch motor, a lead screw assembly, and a pitch control lever assembly. The pitch motor is connected to the lead screw assembly. One end of the pitch control lever assembly is rotatably connected to the fixed column, and the other end is rotatably connected to the lead screw assembly.

[0007] An azimuth axis drive assembly includes a gear assembly and an azimuth axis drive motor disposed below the base. The azimuth axis drive motor is fixedly connected to the base, and the tail of the azimuth axis drive motor passes through the base and connects to the gear assembly.

[0008] The antenna is fixedly mounted on the pitch control rod assembly;

[0009] The pitch motor drives the lead screw assembly to control the pitch control lever group to arch or level out, thereby driving the antenna to pitch; the azimuth axis drive assembly drives the gear assembly to rotate, thereby driving the base to rotate around the azimuth axis.

[0010] Furthermore, the base is circular, and the fixed column includes a lead screw fixed column and a follower rod fixed column;

[0011] There are two lead screw fixing columns, and the connecting line of the two lead screw fixing columns is located in the same vertical plane as the center of the base.

[0012] There are two follower rod fixing columns, which are located at the edge of the base. The two follower rod fixing columns are symmetrically arranged on both sides of the line connecting the two lead screw fixing columns. The distance between the two follower rod fixing columns is equal to the width of the control rod in the pitch control rod group.

[0013] Furthermore, the lead screw assembly includes a lead screw, a lead screw nut, and bearings. The lead screw nut is disposed on the lead screw, and there are two bearings, which are respectively disposed on two lead screw fixing columns. The two ends of the lead screw are supported by the bearings.

[0014] Furthermore, the pitch control lever assembly includes a main lever and a follower lever;

[0015] One end of the driving rod is rotatably connected to the lead screw nut, and the other end is rotatably connected to the follower rod.

[0016] The end of the follower rod that is not connected to the driving rod is rotatably connected to the fixed column of the follower rod.

[0017] Furthermore, the gear assembly includes a pinion and a large gear ring;

[0018] The inner wall of the large gear ring is provided with internal tooth patterns, which cooperate with the external tooth patterns of the small gear. The small gear is sleeved on the tail of the azimuth shaft drive motor, and the small gear meshes with the large gear ring.

[0019] The internal gear has an annular boss at its center.

[0020] Furthermore, the base has a short shaft at its bottom, the short shaft is coaxial with the base, and the base and the short shaft are fixedly connected by bolts;

[0021] The short shaft is assembled with the boss on the large gear ring via a connecting bearing.

[0022] Furthermore, the antenna is fixedly mounted on the follower rod, and the tail end of the antenna is arranged parallel to the follower rod.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The present invention provides a highly stable azimuth and pitch pointing device, which is equipped with a pitch axis drive assembly. The pitch motor drives the lead screw assembly to compress or extend to drive the pitch control rod assembly to arch or level, thereby driving the antenna to move in pitch and achieve fine adjustment in the vertical direction.

[0025] 2. The highly stable azimuth pitch pointing device of the present invention is provided with an azimuth axis drive component, which drives the gear component to rotate, thereby causing the base to rotate around the azimuth axis, realizing axial fine adjustment. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of the structure of a highly stable azimuth and pitch pointing device according to the present invention;

[0029] Figure 2 This is a schematic diagram of the base of a highly stable azimuth and pitch pointing device according to the present invention;

[0030] Figure 3 This is a schematic diagram of the pitch axis drive assembly of a highly stable azimuth pitch pointing device according to the present invention;

[0031] Figure 4 This is a cross-sectional view of a highly stable azimuth and pitch pointing device according to the present invention.

[0032] Figure 5 This is a schematic diagram of the large gear ring of a highly stable azimuth and pitch pointing device according to the present invention.

[0033] Figure Labels

[0034] 1: Base;

[0035] 11: Lead screw fixing column; 12: Follower rod fixing column;

[0036] 2: Pitch axis drive assembly;

[0037] 21: Pitch motor; 22: Lead screw assembly; 23: Pitch control lever assembly;

[0038] 221: Lead screw; 222: Lead screw nut; 223: Bearing;

[0039] 231: Driving lever; 232: Following lever;

[0040] 3: Azimuth axis drive assembly;

[0041] 31: Gear assembly; 32: Azimuth axis drive motor;

[0042] 311: pinion; 312: large gear ring;

[0043] 3121: convex platform;

[0044] 4: Antenna;

[0045] 5: Short axis;

[0046] 6: Connecting bearings;

[0047] 7: End cap. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0049] Example 1

[0050] Please see Figure 1-5 The technical solution of a highly stable azimuth and pitch pointing device provided in this embodiment includes the following:

[0051] Base 1, with several fixed columns on it;

[0052] The pitch axis drive assembly 2 is located above the base 1 and is fixedly connected to the base 1. The pitch axis drive assembly 2 includes a pitch motor 21, a lead screw assembly 22 and a pitch control lever assembly 23. The pitch motor 21 is connected to the lead screw assembly 22. One end of the pitch control lever assembly 23 is rotatably connected to the fixed column and the other end is rotatably connected to the lead screw assembly 22.

[0053] The azimuth axis drive assembly 3 includes a gear assembly 31 and an azimuth axis drive motor 32 located below the base 1. The azimuth axis drive motor 32 is fixedly connected to the base 1, and the tail of the azimuth axis drive motor 32 passes through the base 1 and connects to the gear assembly 31.

[0054] Antenna 4 is fixedly mounted on the pitch control lever assembly 23;

[0055] Among them, the pitch motor 21 drives the lead screw assembly 22 to control the pitch control lever assembly 23 to arch or level, thereby driving the antenna 4 to move in pitch; the azimuth axis drive assembly 3 drives the gear assembly 31 to rotate, thereby driving the base 1 to rotate around the azimuth axis.

[0056] In practice, the pitch motor 21 drives the lead screw 221 to rotate, which in turn drives the follower rod 232 to rotate upward. After being decelerated by the lead screw 221, the pitch axis drive assembly 2 can provide a very high driving torque.

[0057] The pitch axis drive assembly 2 is fixed on the base 1, supported at both ends and with a low center of gravity. The overall structure has high stability and can be used in harsh environments such as aerospace.

[0058] Specifically, the base 1 is circular, and the fixed columns include a lead screw fixed column 11 and a follower rod fixed column 12;

[0059] There are two lead screw fixing columns 11, and the connecting line of the two lead screw fixing columns 11 is located on the same vertical plane as the center of the base 1;

[0060] There are two follower rod fixing columns 12, which are located at the edge of the base 1. The two follower rod fixing columns 12 are symmetrically arranged on both sides of the line connecting the two lead screw fixing columns 11. The distance between the two follower rod fixing columns 12 is equal to the width of the control rod in the pitch control rod group 23.

[0061] Specifically, the lead screw assembly 22 includes a lead screw 221, a lead screw nut 222, and a bearing 223. The lead screw nut 222 is mounted on the lead screw 221. There are two bearings 223, which are respectively mounted on two lead screw fixing columns 11. The two ends of the lead screw 221 are supported by the bearings 223.

[0062] Specifically, the pitch control lever assembly 23 includes an active lever 231 and a follower lever 232;

[0063] One end of the active rod 231 is rotatably connected to the lead screw nut 222, and the other end is rotatably connected to the follower rod 232;

[0064] The end of the follower rod 232 that is not connected to the driving rod 231 is rotatably connected to the follower rod fixed column 12.

[0065] In practice, the pitch motor 21 drives the lead screw 221 to rotate. The two ends of the lead screw 221 are supported by bearings 223. The forward and reverse rotation of the lead screw 221 drives the lead screw nut 222 to move back and forth, which in turn drives the pitch control rod group 23 to arch up or move downward gently, thereby driving the antenna 4 on the follower rod 232 to perform pitch movement.

[0066] Specifically, the gear assembly 31 includes a pinion 311 and a large gear ring 312;

[0067] The inner wall of the large gear ring 312 is provided with internal tooth patterns, which are matched with the external tooth patterns of the pinion 311. The pinion 311 is sleeved on the tail of the azimuth axis drive motor 32, and the pinion 311 is meshed with the large gear ring 312.

[0068] An annular boss 3121 is provided at the center of the internal gear.

[0069] Specifically, a short shaft 5 is provided at the bottom of the base 1. The short shaft 5 is coaxial with the base 1, and the base 1 and the short shaft 5 are fixedly connected by bolts.

[0070] The short shaft 5 is assembled with the boss 3121 on the large gear ring 312 via the connecting bearing 6.

[0071] In practice, the azimuth axis drive motor 32 drives the base 1 to rotate through the transmission between drive gears. After gear reduction, the azimuth axis drive assembly 3 can provide a very high driving torque.

[0072] In practical implementation, the orientation of this invention can achieve 360° pointing.

[0073] Specifically, antenna 4 is fixedly mounted on follower rod 232, and the tail end of antenna 4 is arranged parallel to follower rod 232.

[0074] In practice, the bottom of the large gear ring 312 is provided with an end cap 7.

[0075] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highly stable azimuth and pitch pointing device, characterized in that, include: A base, on which several fixed columns are provided; A pitch axis drive assembly is located above the base and fixedly connected to the base. The pitch axis drive assembly includes a pitch motor, a lead screw assembly, and a pitch control lever assembly. The pitch motor is connected to the lead screw assembly. One end of the pitch control lever assembly is rotatably connected to the fixed column, and the other end is rotatably connected to the lead screw assembly. An azimuth axis drive assembly includes a gear assembly and an azimuth axis drive motor disposed below the base. The azimuth axis drive motor is fixedly connected to the base, and the tail of the azimuth axis drive motor passes through the base and connects to the gear assembly. The antenna is fixedly mounted on the pitch control rod assembly; The pitch motor drives the lead screw assembly to control the pitch control lever group to level or arch, thereby driving the antenna to pitch; the azimuth axis drive assembly drives the gear assembly to rotate, thereby driving the base to rotate around the azimuth axis. The base is circular, and the fixed column includes a lead screw fixed column and a follower rod fixed column. There are two lead screw fixing columns, and the connecting line of the two lead screw fixing columns is located in the same vertical plane as the center of the base. There are two follower rod fixing columns. The two follower rod fixing columns are located at the edge of the base. The two follower rod fixing columns are symmetrically arranged on both sides of the connecting line of the two lead screw fixing columns. The distance between the two follower rod fixing columns is equal to the width of the control rod in the pitch control rod group. The lead screw assembly includes a lead screw, a lead screw nut, and bearings. The lead screw nut is disposed on the lead screw, and there are two bearings, which are respectively disposed on two lead screw fixing columns. The two ends of the lead screw are supported by the bearings. The pitch control lever assembly includes a main lever and a follower lever; One end of the driving rod is rotatably connected to the lead screw nut, and the other end is rotatably connected to the follower rod. The end of the follower rod that is not connected to the driving rod is rotatably connected to the follower rod fixed column; The gear assembly includes a pinion and a large gear ring; The inner wall of the large gear ring is provided with internal tooth patterns, which cooperate with the external tooth patterns of the small gear. The small gear is sleeved on the tail of the azimuth shaft drive motor, and the small gear meshes with the large gear ring. The large gear ring has an annular boss at its center; The base has a short shaft at its bottom, the short shaft is coaxial with the base, and the base and the short shaft are fixedly connected by bolts; The short shaft is assembled with the boss on the large gear ring via a connecting bearing; The antenna is fixedly mounted on the follower rod, and the tail end of the antenna is arranged parallel to the follower rod.

Images