Dual-motor joint control three-axis antenna holder

Abstract

The utility model provides a dual-motor joint control three-axis antenna holder, which is used for solving the problems that an existing three-axis antenna holder needs to be independently controlled by three motors, the holder is huge in structure, and the output torque cannot meet the installation requirement of a large-mass antenna. Comprising a first U-shaped mounting plate and a second U-shaped mounting plate; control motors are mounted on the inner walls of vertical plates on the two sides of the first U-shaped mounting plate correspondingly, and vertical plates on the two sides of the second U-shaped mounting plate are rotationally mounted on power output shafts of the two control motors correspondingly. And support assemblies are rotationally mounted on transverse plates of the first U-shaped mounting plate and the second U-shaped mounting plate correspondingly, and transmission assemblies are further arranged between the support assemblies and the two control motors. Through the two control motors, the support assembly and the transmission assembly, horizontal rotation, pitch angle adjustment and polarization mode adjustment of the antenna are achieved, the cradle head is compact in structure and large in output torque, and the installation requirement of the large-mass antenna can be met.

Description

Technical Field

[0001] The utility model relates to the field of antennas, in particular to a three-axis antenna platform controlled by dual motors. Background Art

[0002] In the process of radar electronic countermeasures, it is often necessary to aim the jamming antenna at the target to achieve a better jamming effect. At the same time, the polarization mode needs to be changed to cope with target antennas with different polarization modes. The existing three-axis antenna platforms all use one motor to control one axis. The gimbal requires three motors for control. The gimbal is large in size, and the torque controlled by a single motor is limited, which cannot meet the installation requirements of large-mass antennas. Utility Model Content

[0003] The purpose of the utility model is to provide a three-axis antenna gimbal controlled by two motors, so as to solve the problem that the existing three-axis antenna gimbal needs to use three motors for separate control, the gimbal structure is bulky and the output torque cannot meet the installation requirements of large-mass antennas.

[0004] A three-axis antenna gimbal controlled by two motors, comprising a first U-shaped mounting plate and a second U-shaped mounting plate;

[0005] Control motors are installed on the inner walls of the vertical plates on both sides of the first U-shaped mounting plate, and the vertical plates on both sides of the second U-shaped mounting plate are rotatably mounted on the power output shafts of the two control motors respectively;

[0006] The first U-shaped mounting plate and the second U-shaped mounting plate are both rotatably mounted with support assemblies, and a transmission assembly is further arranged between the support assembly and the two control motors.

[0007] Optionally, the support assembly includes a mounting flange and a rotating shaft;

[0008] One end of the rotating shaft is fixed on one side end face of the mounting flange, and the other end of the rotating shaft rotates through the cross plate of the first U-shaped mounting plate or the second U-shaped mounting plate, and the axis of the rotating shaft is perpendicular to the axis of the control motor power output shaft.

[0009] Optionally, a circular mounting plate is provided on the outer wall of the rotating shaft, and the circular mounting plate is located on the inner side of the first U-shaped mounting plate and the second U-shaped mounting plate;

[0010] A return spring is sleeved on the outer wall of the rotating shaft, and the return spring is located between the circular mounting plate and the other end of the rotating shaft.

[0011] Optionally, the transmission assembly includes a first bevel gear mounted on the two control motor power output shafts, and the first bevel gears on both sides are located on the inner side of the second U-shaped mounting plate;

[0012] And a second bevel gear is slidably arranged at the other end of the rotating shaft, and when the return spring is in a free state, the second bevel gear is aligned with the two first bevel gears.

[0013] Optionally, a limiting boss is provided on the inner side of the second bevel gear, and a limiting groove for cooperating with the limiting boss is provided on the rotating shaft.

[0014] Optionally, the rotating shaft rotates through the first bearing mounting seat and the first bearing and passes through the cross plate of the first U-shaped mounting plate or the second U-shaped mounting plate;

[0015] The first bearing mounting seat is mounted on the inner side wall of the transverse plate of the first U-shaped mounting plate or the second U-shaped mounting plate.

[0016] Optionally, a magnetically controlled adsorption mechanism is further provided between the upper end surface of the first bearing mounting seat and the lower end surface of the second bevel gear, and the adsorption mechanism includes a first annular optical encoder, a magnetic controller and a magnetically controlled responder;

[0017] The first optical encoder is mounted on the upper end surface of the first bearing mounting seat, the magnetron is mounted on the upper end surface of the first optical encoder, and the magnetron responder is mounted on the lower end surface of the second bevel gear.

[0018] Optionally, when the magnetron and the magnetron responder are adsorbed, the second bevel gear is disengaged from the first bevel gear, and the lower end surface of the magnetron responder is in contact with the upper end surface of the magnetron.

[0019] Optionally, a second optical encoder is also installed on the outer wall of one side of the second U-shaped mounting plate, and the second optical encoder is coaxially arranged with the power output shaft of the control motor.

[0020] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0021] 1. This application realizes horizontal rotation of the antenna, pitch angle adjustment and polarization adjustment through two control motors, a support assembly and a transmission assembly. The gimbal has a compact structure and a large output torque, which can meet the installation requirements of large-mass antennas.

[0022] 2. The present application can enable the two first bevel gears to rotatably mesh with the second bevel gears on both sides by setting a magnetically controlled adsorption mechanism, thereby achieving different adjustments.

[0023] 3. The present application provides a reset spring, so that when the gimbal is powered off, the two second bevel gears mesh with the two first bevel gears, so that the gimbal forms a stable self-locking structure and does not stop rotating.

[0024] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings of the present utility model are described as follows.

[0026] Figure 1 It is a schematic diagram of the front structure of the three-axis antenna gimbal controlled by dual motors of the present invention.

[0027] Figure 2 This is a schematic diagram of the rear structure of the three-axis antenna gimbal controlled by dual motors of the utility model.

[0028] Figure 3 It is a structural schematic diagram of the first U-shaped mounting plate, the rotating shaft and the mounting flange of the utility model.

[0029] Figure 4 It is a structural schematic diagram of the support assembly and the second bevel gear of the utility model.

[0030] Figure 5 It is a structural schematic diagram of the support assembly, the second bevel gear and the magnetically controlled adsorption mechanism of the utility model.

[0031] Figure 6 It is a structural schematic diagram of the second U-shaped mounting plate and the control motor of the utility model.

[0032] Figure 7 It is a schematic diagram of the structure of the second bevel gear of the utility model.

[0033] In the figure: 1-first U-shaped mounting plate; 2-second U-shaped mounting plate; 3-control motor; 4-mounting flange; 5-rotating shaft; 6-annular mounting plate; 7-reset spring; 8-first bevel gear; 9-second bevel gear; 10-limiting boss; 11-limiting slide groove; 12-first bearing mounting seat; 13-first bearing; 14-first optical encoder; 15-magnetic controller; 16-magnetic controller responder; 17-second optical encoder; 18-second bearing mounting seat; 19-second bearing. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Embodiment 1:

[0036] like Figure 1 and Figure 2A dual-motor joint-controlled three-axis antenna gimbal shown includes a first U-shaped mounting plate 1 and a second U-shaped mounting plate 2;

[0037] Control motors 3 are installed on the inner walls of the vertical plates on both sides of the first U-shaped mounting plate 1, and the vertical plates on both sides of the second U-shaped mounting plate 2 are rotatably mounted on the power output shafts of the two control motors 3 respectively;

[0038] Support assemblies are rotatably mounted on the transverse plates of the first U-shaped mounting plate 1 and the second U-shaped mounting plate 2 , and a transmission assembly is further arranged between the support assembly and the two control motors 3 .

[0039] In this embodiment, the antenna direction is quickly adjusted by the forward, reverse or differential rotation of two relatively arranged control motors 3. The design of joint control of the two control motors 3 enables the load capacity of the rocker to be greater when the motors have the same torque.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the support assembly includes a mounting flange 4 and a rotating shaft 5;

[0041] One end of the rotating shaft 5 is fixed on one side end face of the mounting flange 4, and the other end of the rotating shaft 5 rotates through the cross plate of the first U-shaped mounting plate 1 or the second U-shaped mounting plate 2, and the axis of the rotating shaft 5 is perpendicular to the axis of the power output shaft of the control motor 3.

[0042] In this embodiment, the support assembly rotatably connected to the first U-shaped mounting plate 1 is defined as a pan-tilt support assembly, the mounting flange 4 and the rotating shaft 5 of the pan-tilt support assembly are defined as a pan-tilt mounting flange and a pan-tilt rotating shaft, respectively; the support assembly rotatably connected to the second U-shaped mounting plate 2 is defined as an antenna support assembly, the mounting flange 4 and the rotating shaft 5 of the antenna support assembly are defined as an antenna mounting flange and an antenna rotating shaft, respectively; the transceiver antenna is mounted on the antenna mounting flange, and the pan-tilt mounting flange is mounted on the base.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a circular mounting plate 6 is provided on the outer wall of the rotating shaft 5, and the circular mounting plate 6 is located on the inner side of the first U-shaped mounting plate 1 and the second U-shaped mounting plate 2;

[0044] The outer wall of the rotating shaft 5 is sleeved with a return spring 7 , and the return spring 7 is located between the circular mounting plate 6 and the other end of the rotating shaft 5 .

[0045] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the transmission assembly includes a first bevel gear 8 mounted on the power output shafts of the two control motors 3, and the first bevel gears 8 on both sides are located on the inner side of the second U-shaped mounting plate 2;

[0046] And a second bevel gear 9 is slidably arranged at the other end of the rotating shaft 5. When the reset spring 7 is in a free state, the second bevel gear 9 is aligned with the two first bevel gears 8.

[0047] In this embodiment, a reset spring 7 is provided. When the power to the pan / tilt head is cut off, the two second bevel gears 9 mesh with the two first bevel gears 8, so that the pan / tilt head forms a stable self-locking structure and will not stop rotating.

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, a limiting boss 10 is provided on the inner side of the second bevel gear 9 , and a limiting sliding groove 11 for cooperating with the limiting boss 10 is provided on the rotating shaft 5 .

[0049] In this embodiment, the limiting boss 10 cooperates with the limiting slot 11 to prevent the second bevel gear 9 from rotating relative to the rotating shaft 5 .

[0050] like Figure 3 As shown, the rotating shaft 5 rotates through the first U-shaped mounting plate 1 or the second U-shaped mounting plate 2 through the first bearing mounting seat 12 and the first bearing 13;

[0051] The first bearing mounting seat 12 is mounted on the inner side wall of the transverse plate of the first U-shaped mounting plate 1 or the second U-shaped mounting plate 2 .

[0052] like Figure 1 , Figure 2 and Figure 5 As shown, a magnetically controlled adsorption mechanism is also provided between the upper end surface of the first bearing mounting seat 12 and the lower end surface of the second bevel gear 9, and the adsorption mechanism includes an annular first optical encoder 14, a magnetic controller 15 and a magnetically controlled responder 16;

[0053] The first optical encoder 14 is mounted on the upper end surface of the first bearing mounting seat 12 , the magnetron 15 is mounted on the upper end surface of the first optical encoder 14 , and the magnetron responder 16 is mounted on the lower end surface of the second bevel gear 9 .

[0054] In this embodiment, positive and negative currents are applied to the magnetron 15 to generate magnetic fields of different polarizations, which are used to push the magnetron responder 16 to move forward or backward. The magnetron responder 16 is made of permanent neodymium magnets.

[0055] like Figure 1 , Figure 2 and Figure 5 As shown, when the magnetron 15 and the magnetron responder 16 are adsorbed, the second bevel gear 9 and the first bevel gear 8 are disengaged, and the lower end surface of the magnetron responder 16 is in contact with the upper end surface of the magnetron 15 .

[0056] In this embodiment, when one of the second bevel gears 9 is meshed with the first bevel gear 8, the other second bevel gear 9 is generally in a retracted state, and the magnetron responder 16 and the magnetron 15 in the retracted state conflict with each other, forming a strong friction force, so that the second bevel gear 9 will not rotate at will when it is not controlled, thereby ensuring the stability of the gimbal.

[0057] In this embodiment, the second bevel gear 9 and the first bevel gear 8 are bevel gears with a large number of teeth, so that the control accuracy and the smoothness of their meshing are high.

[0058] like Figure 1 , Figure 2 and Figure 6 As shown, a second optical encoder 17 is also installed on the outer wall of one side of the second U-shaped mounting plate 2 , and the second optical encoder 17 is coaxially arranged with the power output shaft of the control motor 3 .

[0059] In this embodiment, two first optical encoders 14 and one second optical encoder 17 are provided to detect the relative positions of the rotating parts in real time.

[0060] In this embodiment, the specific method of adjusting the antenna through the pan-tilt platform is as follows:

[0061] 1. When the antenna needs to be rotated horizontally, a reverse current is passed through the magnetron 15 on the pan / tilt support assembly to make the magnetron 15 and the magnetron responder 16 repel each other, and the second bevel gear 9 on the pan / tilt support assembly is meshed with the first bevel gears 8 on both sides; at the same time, a forward current is passed through the magnetron 15 on the antenna support assembly to make the magnetron 15 and the magnetron responder 16 adsorb and fit each other, and the second bevel gear 9 on the antenna support assembly is disengaged from the first bevel gears 8 on both sides; the control motor 3 is started to drive the pan / tilt to rotate horizontally.

[0062] 2. When it is necessary to adjust the pitch angle and polarization rotation of the antenna, a positive current is passed through the magnetron 15 on the pan / tilt support assembly so that the magnetron 15 and the magnetron responder 16 are attracted to and fit each other, and the second bevel gear 9 on the pan / tilt support assembly is disengaged from the first bevel gears 8 on both sides; at the same time, a positive current is passed through the magnetron 15 on the antenna support assembly so that the magnetron 15 and the magnetron responder 16 repel each other, and the second bevel gear 9 on the antenna support assembly is meshed with the first bevel gears 8 on both sides; the two control motors 3 are started to rotate in the same direction and at the same speed to control the pitch angle of the antenna; the two control motors 3 are started to rotate in opposite directions and at the same speed to control the polarization rotation of the antenna; the two control motors 3 are started to rotate in the same direction and at a differential speed to control both the polarization rotation and the pitch.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A three-axis antenna gimbal controlled by two motors, characterized in that: It comprises a first U-shaped mounting plate (1) and a second U-shaped mounting plate (2); Control motors (3) are installed on the inner walls of the vertical plates on both sides of the first U-shaped mounting plate (1), and the vertical plates on both sides of the second U-shaped mounting plate (2) are rotatably mounted on the power output shafts of the two control motors (3); Support assemblies are rotatably mounted on the transverse plates of the first U-shaped mounting plate (1) and the second U-shaped mounting plate (2), and a transmission assembly is also provided between the support assembly and the two control motors (3).

2. The dual-motor controlled three-axis antenna gimbal according to claim 1, characterized in that: The support assembly comprises a mounting flange (4) and a rotating shaft (5); One end of the rotating shaft (5) is fixed on one side end surface of the mounting flange (4), and the other end of the rotating shaft (5) is rotatably passed through the cross plate of the first U-shaped mounting plate (1) or the second U-shaped mounting plate (2), and the axis of the rotating shaft (5) is perpendicular to the axis of the power output shaft of the control motor (3).

3. A dual-motor controlled three-axis antenna pan / tilt platform according to claim 2, characterized in that: A circular mounting plate (6) is provided on the outer wall of the rotating shaft (5), and the circular mounting plate (6) is located on the inner side of the first U-shaped mounting plate (1) and the second U-shaped mounting plate (2); The outer wall of the rotating shaft (5) is sleeved with a return spring (7), and the return spring (7) is located between the circular mounting plate (6) and the other end of the rotating shaft (5).

4. The dual-motor controlled three-axis antenna pan / tilt platform according to claim 3, characterized in that: The transmission assembly comprises a first bevel gear (8) mounted on the power output shafts of the two control motors (3), and the first bevel gears (8) on both sides are located on the inner side of the second U-shaped mounting plate (2); and a second bevel gear (9) slidably arranged at the other end of the rotating shaft (5); when the return spring (7) is in a free state, the second bevel gear (9) is aligned with the two first bevel gears (8).

5. The dual-motor controlled three-axis antenna gimbal according to claim 4, characterized in that: A limiting boss (10) is arranged on the inner side of the second bevel gear (9), and a limiting sliding groove (11) for cooperating with the limiting boss (10) is arranged on the rotating shaft (5).

6. The dual-motor controlled three-axis antenna pan / tilt platform according to claim 4, characterized in that: The rotating shaft (5) passes through the first U-shaped mounting plate (1) or the second U-shaped mounting plate (2) in a rotatable manner through the first bearing mounting seat (12) and the first bearing (13); The first bearing mounting seat (12) is mounted on the inner side wall of the transverse plate of the first U-shaped mounting plate (1) or the second U-shaped mounting plate (2).

7. The dual-motor controlled three-axis antenna gimbal according to claim 6, characterized in that: A magnetically controlled adsorption mechanism is also provided between the upper end surface of the first bearing mounting seat (12) and the lower end surface of the second bevel gear (9), the adsorption mechanism comprising an annular first optical encoder (14), a magnetron (15) and a magnetron responder (16); The first optical encoder (14) is mounted on the upper end surface of the first bearing mounting seat (12), the magnetron (15) is mounted on the upper end surface of the first optical encoder (14), the magnetron responder (16) is mounted on the lower end surface of the second bevel gear (9), and the first optical encoder (14) is coaxially arranged with the rotating shaft (5).

8. The dual-motor controlled three-axis antenna pan / tilt platform according to claim 7, characterized in that: When the magnetron (15) and the magnetron responder (16) are adsorbed, the second bevel gear (9) and the first bevel gear (8) are disengaged, and the lower end surface of the magnetron responder (16) is in contact with the upper end surface of the magnetron (15).

9. The dual-motor controlled three-axis antenna pan / tilt platform according to claim 7, characterized in that: A second optical encoder (17) is also mounted on the outer wall of one side of the second U-shaped mounting plate (2), and the second optical encoder (17) is coaxially arranged with the power output shaft of the control motor (3).

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