Cantilever type antenna driving mechanism

Abstract

The invention relates to a cantilever type antenna driving mechanism, which belongs to the technical field of satellite communication and comprises a motor and a bracket, a driving shaft connected with a bearing of the bracket is arranged on the bracket; the device further comprises a large gear and a small gear. The large gear is coaxially connected with the driving shaft through a key; the motor is installed on the support, a pinion is arranged at the tail end of the motor, and the pinion is meshed with the large gear to drive the driving shaft to rotate around the driving shaft; the large gear and the small gear are located on the inner side of the support. The motor is positioned outside the bracket; an output shaft of the motor penetrates through the bracket and is connected with the pinion; a pin shaft is arranged on the side wall of the large gear; an arc-shaped groove corresponding to the pin shaft is formed in the bracket; the tail end of the pin shaft is located in the arc-shaped groove and can slide along the arc-shaped groove. The layout of the driving device under the limited conditions of limited space, limited weight index requirements, determined rotation range and the like is realized.

Description

Technical Field

[0001] The invention relates to the technical field of satellite communications, in particular to a cantilever antenna driving device. Background Art

[0002] Drive devices are widely used in satellite communication antenna mounts. As satellite communication antennas are used more and more widely, the demand for miniaturization and lightweight antennas is also increasing. Under the condition that the overall structural design of the antenna mount meets the requirements of miniaturization and lightweight, the layout of some compact drive mechanisms cannot meet the requirements of the antenna rotation range. Summary of the invention

[0003] In view of this, the present invention proposes a cantilever antenna driving device to achieve the layout of the driving device under restrictive conditions such as limited space, limited weight index requirements, and a determined rotation range.

[0004] The present invention adopts the following technical solutions to achieve the above technical effects:

[0005] A cantilever antenna driving mechanism, comprising a motor and a bracket; the bracket is provided with a driving shaft connected to its bearing; and further comprising a large gear and a small gear; the large gear is coaxially connected to the driving shaft through a key;

[0006] The motor is mounted on the bracket, and a small gear is provided at the end of the motor, which meshes with the large gear to drive the driving shaft to rotate around itself;

[0007] The large gear and the small gear are both located on the inner side of the bracket; the motor is located on the outer side of the bracket, and the output shaft of the motor passes through the bracket and is connected to the small gear;

[0008] A pin shaft is arranged on the side wall of the large gear; an arc groove corresponding to the pin shaft is arranged on the bracket; the end of the pin shaft is located in the arc groove and can slide along the arc groove.

[0009] Furthermore, the motor drives the pinion to rotate through a reducer.

[0010] Furthermore, a roller constrained therein is provided in the arc-shaped groove, and the roller is connected to the end of the pin shaft through a screw.

[0011] Furthermore, the center of the arc groove and the center of the large gear are both located on the central axis of the drive shaft.

[0012] Furthermore, it also includes an eccentric sleeve; a circular hole is provided on the bracket, the eccentric sleeve is installed at the position of the circular hole, and the inner ring of the flange passes through the circular hole to cooperate with the end flange of the reducer.

[0013] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0014] 1. Use of cantilever drive device in specific design scenarios;

[0015] 2. The cantilever drive device has a strengthened design and is easy to implement.

[0016] The cantilever antenna driving device of the present invention has a simple structure and is easy to implement, and meets the requirements of the antenna on the driving device under limited conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side structural schematic diagram of the present invention;

[0018] Figure 2 It is a front structural schematic diagram of the present invention;

[0019] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention. DETAILED DESCRIPTION

[0021] Below, the present invention is further described in conjunction with the accompanying drawings.

[0022] In order to facilitate the technical personnel in this field to understand the technical solution of this patent, and at the same time, to make the technical purpose, technical solution and beneficial effects of this patent clearer and to fully support the scope of protection of the claims, the technical solution of this patent is further and more detailed in the form of specific cases.

[0023] A cantilever antenna driving device includes a motor, a reducer, a pinion, a large gear, an eccentric sleeve, a bracket and other structures. The large gear is fixed on the shaft of the structure to be driven and rotated by the driving device through a key and is coaxial with the structure. After the motor and the reducer are screwed together, the pinion is connected to the end of the reducer. The device composed of the motor, the reducer and the pinion is fixed on the bracket and installed on the main structure through the bracket. The meshing tooth gap between the large and small gears is adjusted to a reasonable value by adjusting the eccentric sleeve. In order to enhance the rigidity of the cantilever driving device, a pin shaft is passed across the large gear and the bracket. A roller is installed on one end of the pin shaft and installed on the bracket. The space required for the shaft to move with the large gear is designed on the bracket, and the other end of the pin shaft is fixedly installed on the large gear. The mechanism of the driving device is easy to implement, and the structural design at the roller can greatly improve its reliability.

[0024] The large gear is fixedly mounted on the shaft of the structure to be driven to rotate by the driving device through a key and is coaxial with the structure to drive the rotation of the main structure.

[0025] After the motor and the reducer are screwed together, a pinion is connected to the end of the reducer, and the stop flange of the reducer cooperates with the eccentric sleeve. The device consisting of the motor, the reducer, the eccentric sleeve and the pinion is fixed on the bracket and installed on the main structure through the bracket, so that relative movement is generated between the main structure and the structure driven by the large gear to rotate, and the meshing tooth gap between the large and small gears is adjusted by the eccentric sleeve.

[0026] A pin shaft passes across the large gear and the bracket, and a roller is installed on one end of the pin shaft, which is installed on the bracket. The space required for the shaft to move with the large gear is designed on the bracket, and the other end of the pin shaft is fixedly installed on the large gear, which greatly improves the rigidity of the cantilever antenna driving device.

[0027] A cantilever antenna driving device mechanism includes a motor, a reducer, a pinion, a large gear, an eccentric sleeve, a bracket and other structures, wherein the large gear is fixed to the shaft of the structure to be driven and rotated by the driving device through a key and is coaxial with the structure, the device composed of the motor, the reducer, the eccentric sleeve and the pinion is fixed to the bracket and installed on the main structure through the bracket, a pin shaft is passed through between the large gear and the bracket, one end of the pin shaft is installed with a roller installed on the bracket, and the other end is fixedly installed on the large gear. The driving device mechanism is easy to implement, and the structural design at the roller can greatly improve its reliability.

[0028] like Figures 1 to 4 As shown, the front view and left view of the cantilever antenna driving device of the present invention are the composition diagram of the mechanism. The antenna driving device mechanism is mainly composed of a motor 8, a reducer 7, a pinion 12, a large gear 5, an eccentric sleeve 13, a bracket 6, etc. The large gear 5 is fixed on the shaft of the structure to be driven and rotated by the driving device through a key and is coaxial with the structure. After the motor 8 and the reducer 7 are screwed together, the pinion 12 is connected to the end of the reducer 7, and the stop flange of the reducer 7 cooperates with the eccentric sleeve 13. The device composed of the motor 8, the reducer 7, the eccentric sleeve 13 and the pinion 12 is fixed on the bracket and installed on the main structure through the bracket 6. The meshing backlash of the large and small gears is adjusted to a reasonable value by adjusting the eccentric sleeve 13. In order to strengthen the rigidity of the cantilever driving device, a pin shaft 11 is passed across the large gear 5 and the bracket 6. The roller 9 is installed on one end of the pin shaft 11 and installed on the bracket 6. The space required for the shaft to move with the large gear 5 is designed on the bracket 6. The other end of the pin shaft 11 is fixedly installed on the large gear 5.

[0029] In summary, the overall structure of the present invention is simple and easy to implement, and the structural design of the roller can greatly improve its reliability, and meet the layout of the drive device under the constraints of limited space, limited weight index requirements, and a certain rotation range.

[0030] 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 cantilever antenna driving mechanism, comprising a motor and a bracket; the bracket is provided with a driving shaft connected to its bearing; characterized in that: It also includes a large gear and a small gear; the large gear is coaxially connected to the drive shaft through a key; The motor is mounted on the bracket, and a small gear is provided at the end of the motor, which meshes with the large gear to drive the driving shaft to rotate around itself; The large gear and the small gear are both located on the inner side of the bracket; the motor is located on the outer side of the bracket, and the output shaft of the motor passes through the bracket and is connected to the small gear; A pin shaft is arranged on the side wall of the large gear; an arc groove corresponding to the pin shaft is arranged on the bracket; the end of the pin shaft is located in the arc groove and can slide along the arc groove.

2. The cantilever antenna driving mechanism according to claim 1, characterized in that: The motor drives the pinion to rotate via the reducer.

3. The cantilever antenna driving mechanism according to claim 1, characterized in that: The arc groove is provided with a roller constrained therein, and the roller is connected to the end of the pin shaft through a screw.

4. The cantilever antenna driving mechanism according to claim 1, characterized in that: The center of the arc groove and the center of the large gear are both located on the central axis of the driving shaft.

5. The cantilever antenna driving mechanism according to claim 2, characterized in that: It also includes an eccentric sleeve; a circular hole is provided on the bracket, the eccentric sleeve is installed at the position of the circular hole, and the inner ring of the flange passes through the circular hole to cooperate with the end flange of the reducer.

Images