Laser information field optical axis electric fine adjustment mechanism

Abstract

The present application belongs to the technical field of precision adjustment of optical axis parallelism of photoelectric systems, and relates to a laser information field optical axis electric fine adjustment mechanism, which comprises optical axis correction flat glass, fine adjustment fixing seat, high-low direction adjusting assembly and azimuth direction adjusting assembly, the optical axis correction flat glass is arranged in a mirror frame support, the mirror frame support is hingedly connected with a U-shaped connecting piece through a pin shaft, the U-shaped connecting piece is rotationally connected to the fine adjustment fixing seat, the azimuth direction adjusting assembly and the high-low direction adjusting assembly are arranged on the side of the fine adjustment fixing seat away from the U-shaped connecting piece, the azimuth direction adjusting assembly can drive the U-shaped connecting piece to adjust the azimuth angle, the high-low direction adjusting assembly can drive the mirror frame support to adjust the high-low angle around the pin shaft, and the azimuth direction adjusting assembly and the high-low direction adjusting assembly are both electrically adjusted. The device has the advantages of simple and compact structure, easy processing, high stability, good reliability, wide application range, simple operation and use, and can improve the adjustment efficiency and quality of the laser information field optical axis.

Description

Technical Field

[0001] This invention belongs to the technical field of precise alignment of optical axis parallelism in optoelectronic systems, and specifically relates to an electric fine-tuning mechanism for the optical axis of a laser information field. Background Technology

[0002] During the assembly and adjustment of optoelectronic systems, the technician needs to align the laser test optical axis and the daytime main aiming optical axis to be parallel. This ensures that the laser test optical axis always points towards the target during product use, thereby achieving the goal of precision-guided target engagement. Similarly, in multi-path image acquisition equipment, the technician needs to use the main aiming optical path as a reference to adjust other optoelectronic detection optical paths. This ensures that the product can consistently observe the same target after switching between different optical paths.

[0003] After the entire unit is assembled and adjusted, and after environmental tests such as impact vibration and high and low temperatures, the parallelism between the adjusted information field optical axis and the daytime main aiming optical axis will deviate. Due to the inherent stress of the internal structure of the product, during long-term use, as the stress is released, the parallelism between the information field optical axis and the daytime main aiming optical axis will also deviate. At this time, the assembler needs to make corrections based on the deviation of the laser information field optical axis relative to the main aiming optical axis in terms of elevation and azimuth. However, in the existing technology, there is a lack of an electric fine-tuning mechanism for adjusting the laser information field optical axis on unmanned optoelectronic equipment. Therefore, those skilled in the art urgently need to develop an electric fine-tuning mechanism for the laser information field optical axis. Summary of the Invention

[0004] The purpose of this invention is to solve the aforementioned technical problems by proposing an electric fine-tuning mechanism for the laser information field optical axis. This mechanism addresses the issue of parallelism correction between the information field optical axis and the daytime main aiming optical axis during the use of guided products. It enables rapid adjustment of the optical axis parallelism. After adjustment, the product can maintain optical axis parallelism for extended periods during use. In multi-path image acquisition equipment, the assembly technician also needs to adjust other photoelectric detection optical paths using the main aiming optical path as a reference. This ensures that the product consistently observes the same target after switching between different optical paths. This electric fine-tuning mechanism can quickly complete the laser information field optical axis adjustment during the overall assembly and adjustment of the product, facilitating operation. Actual production field use has verified that this invention meets the design requirements.

[0005] The technical solution is as follows: a laser information field optical axis electric fine-tuning mechanism, including an optical axis correction plate glass, a fine-tuning fixing seat, a height adjustment component, and an azimuth adjustment component. The optical axis correction plate glass is disposed inside a lens frame support. The lens frame support is hinged to a U-shaped connector via a pin. The U-shaped connector is rotatably connected to the fine-tuning fixing seat. The azimuth adjustment component and the height adjustment component are both disposed on the side of the fine-tuning fixing seat away from the U-shaped connector. The azimuth adjustment component can drive the U-shaped connector to adjust the azimuth angle, and the height adjustment component can drive the lens frame support to adjust the height angle around the pin. Both the azimuth adjustment component and the height adjustment component are electrically adjustable.

[0006] Preferably, the orientation adjustment assembly includes a rotating shaft, a sector worm gear, a first worm, an orientation adjustment motor, and two support plates oppositely arranged on the fine-tuning fixed seat. The rotating shaft passes through and is rotatably connected to the fine-tuning fixed seat. One end of the rotating shaft is fixedly connected to a U-shaped connector, and the other end of the rotating shaft is fixedly connected to the sector worm gear. The first worm meshes with the sector worm gear, and both ends of the first worm are rotatably connected to the two support plates via bearings. The output shaft of the orientation adjustment motor is driven to one end of the worm via a coupling, and the orientation adjustment motor is connected to the fine-tuning fixed seat via a motor support. In this configuration, the orientation adjustment motor drives the first worm to rotate forward or backward, thereby causing the sector worm gear to rotate forward or backward by a certain angle. This allows the frame support to achieve angle adjustment in the orientation direction around the fine-tuning fixed seat with the rotating shaft as the rotation center. This orientation adjustment assembly uses a worm gear transmission method, which can reduce the overall space and has a self-locking function after adjustment.

[0007] Preferably, the sector worm gear is fixedly connected to the rotating shaft by a locating pin, which facilitates the disassembly, assembly, and maintenance of the sector worm gear.

[0008] Preferably, the height adjustment assembly includes a drive mechanism and a guide mechanism. The drive mechanism includes a ball-end stud, a height adjustment worm gear, a worm, and a height adjustment motor. The height adjustment worm gear has a threaded through hole along the axial direction at its center, and one end of the worm gear is the worm gear portion, while the other end is a connecting portion. The connecting portion passes through and is rotatably connected to the fine-tuning fixing seat. The ball-end stud is threaded into the threaded through hole, and the length of the ball-end stud is longer than the length of the height adjustment worm gear. The ball end of the ball-end stud abuts against one end of the frame support. The worm gear and worm shaft 2 are meshed together. Both ends of the worm shaft 2 are rotatably connected to two support plates via bearings. The output shaft of the height adjustment motor is connected to one end of the worm shaft 2 via a coupling 2. The height adjustment motor is connected to the fine-tuning fixed seat via a motor support 2. The guiding mechanism includes a ball-head guide post, a compression spring, and a guide groove. The guide groove is located within the fine-tuning fixed seat. The ball-head guide post is telescopically connected within the guide groove via the compression spring, and the ball-head end of the ball-head guide post abuts against the end of the frame support away from the ball-head stud. In this configuration, the height adjustment motor drives the worm shaft 2 to rotate forward or backward, which in turn drives the height adjustment worm gear to rotate forward or backward, thereby causing the ball-head stud to move up and down along the threaded through hole. With the cooperation of the ball-head guide post and the compression spring, the frame support is driven to swing up and down around the pin axis along the height adjustment path. This height adjustment assembly also uses a worm gear transmission method, which can further reduce the overall space and has a self-locking function after adjustment.

[0009] Preferably, one end of the connecting part is provided with a positioning surface that abuts against the fine-tuning fixing seat, and the other end passes through the fine-tuning fixing seat and is provided with a shaft elastic retaining ring that can prevent the connecting part from axially moving. On the one hand, this facilitates the installation, removal and maintenance of the vertical worm gear, and on the other hand, it can improve the stability of the vertical fine-tuning.

[0010] Preferably, both the azimuth adjustment motor and the elevation adjustment motor are hollow cup brushed motors, which helps to save energy and reduce the weight of the device.

[0011] Preferably, the guiding mechanism further includes a guide plate, which is fixedly connected to the fine-tuning fixing seat by screws. The working end of the guide plate matches and slides with the side wall of the ball-end stud. Considering that the gap between the threaded connection between the high-low direction worm gear and the ball-end stud may cause the optical axis to wobble, the guide plate is added to the fine-tuning fixing seat to limit the ball-end stud, thereby eliminating the transmission gap. During the high-low direction adjustment, the ball-end guide post and the compression spring can work together to stabilize the optical axis correction plate glass in a certain position after adjustment, preventing the transmission gap from increasing and loosening after repeated adjustments. This helps to improve the overall stability of the optoelectronic equipment after optical axis adjustment.

[0012] Preferably, the present invention further includes a controller, which is electrically connected to the azimuth adjustment motor and the elevation adjustment motor respectively, and a wireless receiving module capable of receiving remote wireless control instructions is also provided on the controller, facilitating the application of this device to unmanned optoelectronic devices (such as unmanned aerial vehicles, unmanned combat vehicles, etc.).

[0013] Preferably, the fine-tuning fixing seat is in the shape of a rectangular plate, and fixing holes are respectively provided at the four corners of the fine-tuning fixing seat.

[0014] The present invention also includes other components that enable a laser information field optical axis electric fine-tuning mechanism to be used normally, which are all conventional means in the art. In addition, devices or components not defined in the present invention, such as coreless brushed motors, couplings, optical axis correction flat glass, mirror frame supports, sector worm wheels, elevation worm wheels, worm one, worm two, controllers, wireless receiving modules, etc., all adopt the existing technologies in the art.

[0015] The working principle of the present invention is that this laser information field optical axis electric fine-tuning mechanism is mainly applied in the optical axis correction process of unmanned optoelectronic equipment. By wirelessly transmitting corresponding control instructions to drive the azimuth adjustment component and the elevation adjustment component to perform fine-tuning of the optical axis, it can solve the problem that the optical axis of unmanned optoelectronic equipment cannot be quickly calibrated after a slight deviation during the mission execution process, thereby improving the accuracy of unmanned optoelectronic equipment during use. The forward and reverse rotations of two coreless brushed motors are controlled by the controller to perform fine-tuning of the optical axis in the elevation and azimuth directions. Using the control handle to transmit control instructions can precisely control the rotation angles of the two coreless brushed motors. During the calibration process, the differences between the optical axes can be clearly displayed on the supporting display and control console, facilitating the optical axis calibration of the whole machine. With the development of image automatic recognition technology, this fine-tuning mechanism can be extended and applied in the aspect of fully automatic optical axis calibration.

[0016] For example, during the optical path calibration process of a laser-guided weapon system information field, the assembly and adjustment master first needs to calibrate indicators such as the field of view and resolution of the main aiming optical path to meet the usage requirements, and then perform the calibration work of the laser information field optical path based on the main aiming optical path. After the laser information field optical path and the main aiming optical path are calibrated to be parallel, after the product undergoes environmental tests such as shock vibration and high and low temperatures, the parallelism between the calibrated laser information field optical axis and the daytime aiming optical axis will deviate. At this time, the assembly and adjustment master needs to perform full-electric correction according to the deviation amount of the laser information field optical axis relative to the aiming optical axis in the elevation and azimuth directions. By using the elevation and azimuth operation buttons supporting the controller to control the forward and reverse rotations of the azimuth adjustment motor and the elevation adjustment motor, the calibration of the parallelism between the zero-instruction optical axis of the laser information field and the daytime aiming optical axis is achieved.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. It adopts a worm gear and worm meshing transmission method, which has a compact structure, can reduce the overall space of the device, and can realize the self-locking function after fully automatic adjustment.

[0019] 2. The transmission between the azimuth adjustment component and the elevation adjustment component is independent and does not interfere with each other, making it easier to adjust the optical axis.

[0020] 3. The overall structure and assembly process are simple, easy to process, highly stable, reliable, and easy to operate. During the optical axis calibration process of the whole machine, it can improve the calibration efficiency and calibration quality of the laser information field optical axis.

[0021] 4. It is suitable for adjusting the optical axis of the laser information field on unmanned optoelectronic equipment, and has good economic efficiency and scalability. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention from one perspective in an embodiment.

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective in an embodiment.

[0024] Figure 3 This is a partial structural cross-sectional view of the present invention in an embodiment.

[0025] Figure 4 This is a partial structural cross-sectional view of the present invention in an embodiment.

[0026] In the diagram: 1-Optical axis correction flat glass; 2-Fine-tuning fixing seat; 3-Mirror frame support; 4-Pin shaft; 5-U-shaped connector; 6-Rotating shaft; 7-Sector worm gear; 8-Worm one; 9-Azimuth adjustment motor; 10-Support plate; 11-Positioning pin; 12-Ball head stud; 13-High / low direction worm gear; 14-Worm two; 15-High / low direction adjustment motor; 16-Ball head guide post; 17-Compression spring; 18-Guide groove; 19-Axis elastic retaining ring; 20-Guide plate. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Example

[0029] like Figures 1-4As shown in the figure, this embodiment proposes a laser information field optical axis electric fine-tuning mechanism, including an optical axis correction plate glass 1, a fine-tuning fixing seat 2, a height adjustment component and an azimuth adjustment component. The optical axis correction plate glass is disposed in a mirror frame support 3. The mirror frame support is hinged to a U-shaped connector 5 via a pin 4. The U-shaped connector is rotatably connected to the fine-tuning fixing seat. The azimuth adjustment component and the height adjustment component are both disposed on the side of the fine-tuning fixing seat away from the U-shaped connector. The azimuth adjustment component can drive the U-shaped connector to adjust the azimuth angle, and the height adjustment component can drive the mirror frame support to adjust the height angle around the pin. Both the azimuth adjustment component and the height adjustment component are electrically adjustable.

[0030] In this embodiment, the orientation adjustment assembly includes a rotating shaft 6, a sector worm gear 7, a worm 8, an orientation adjustment motor 9, and two support plates 10 oppositely disposed on a fine-tuning fixed base. The rotating shaft passes through and is rotatably connected to the fine-tuning fixed base. One end of the rotating shaft is fixedly connected to a U-shaped connector, and the other end of the rotating shaft is fixedly connected to the sector worm gear. Specifically, the sector worm gear is fixedly connected to the rotating shaft by a positioning pin 11, facilitating the disassembly, assembly, and maintenance of the sector worm gear. The worm gear meshes with the sector worm gear, and both ends of the worm gear are rotatably connected to the two support plates by bearings. The output shaft of the orientation adjustment motor is connected to one end of the worm gear via a coupling, and the orientation adjustment motor is connected to the fine-tuning fixed base via a motor support. In this setup, the orientation adjustment motor drives the worm gear to rotate in either the forward or reverse direction, thereby causing the sector worm wheel to rotate forward or in the reverse direction by a certain angle. This allows the frame support to achieve angle adjustment in the orientation direction around the fine-tuning fixing seat with the rotation axis as the center of rotation. The orientation adjustment component uses a worm gear transmission method, which can reduce the overall space and has a self-locking function after adjustment.

[0031] In this embodiment, the height adjustment assembly includes a drive mechanism and a guide mechanism. The drive mechanism includes a ball-end stud 12, a height-lowering worm gear 13, a worm 14, and a height-lowering adjustment motor 15. The height-lowering worm gear has a threaded through hole along the axial direction at its center, and one end of the worm gear is a worm gear portion, while the other end is a connecting portion. The connecting portion passes through and is rotatably connected to the fine-tuning fixing seat. The ball-end stud is threaded into the threaded through hole, and the length of the ball-end stud is longer than the length of the height-lowering worm gear. The ball end of the ball-end stud abuts against one end of the frame support. The elevation adjustment worm gear meshes with the second worm, and both ends of the second worm are rotatably connected to two support plates via bearings. The output shaft of the elevation adjustment motor is connected to one end of the second worm via a coupling, and the elevation adjustment motor is connected to the fine-tuning fixed seat via a motor support. The guiding mechanism includes a ball-head guide post 16, a compression spring 17, and a guide groove 18. The guide groove is located within the fine-tuning fixed seat, and the ball-head guide post is telescopically connected within the guide groove via the compression spring. The ball end of the ball-head guide post abuts against the end of the frame support away from the ball-head stud. In this configuration, the elevation adjustment motor drives the second worm to rotate forward or backward, which in turn drives the elevation adjustment worm gear to rotate forward or backward, thereby causing the ball-head stud to move up and down along the threaded through hole. With the cooperation of the ball-head guide post and the compression spring, the frame support is driven to swing up and down around the pin axis. This elevation adjustment assembly also uses a worm gear transmission method, which can further reduce the overall space and has a self-locking function after adjustment.

[0032] Specifically, one end of the connecting part is provided with a positioning surface that abuts against the fine-tuning fixing seat, and the other end passes through the fine-tuning fixing seat and is provided with a shaft elastic retaining ring 19 to prevent axial movement of the connecting part. This facilitates the installation, removal, and maintenance of the elevation worm gear, and improves the stability of the elevation fine-tuning. Both the azimuth adjustment motor and the elevation adjustment motor are hollow cup brushed motors, which helps to save energy and reduce the weight of the device.

[0033] In this embodiment, the guiding mechanism further includes a guide plate 20. The guide plate is fixedly connected to the fine-tuning fixing seat by screws, and the working end of the guide plate matches and slides with the side wall of the ball head stud. Considering that the gap between the high and low worm gear and the ball head stud may cause the optical axis to wobble, the guide plate is added to the fine-tuning fixing seat to limit the ball head stud, thereby eliminating the transmission gap. During the high and low adjustment process, the ball head guide post and the compression spring can work together to stabilize the optical axis correction plate glass in a certain position after adjustment, and there will be no situation where the transmission gap increases and loosens after repeated adjustment, which is beneficial to improving the overall stability of the optoelectronic equipment after optical axis adjustment.

[0034] In this embodiment, a controller (not shown in the figure) is further provided. The controller is electrically connected to the azimuth adjustment motor and the elevation adjustment motor respectively, and a wireless receiving module (not shown in the figure) capable of receiving remote wireless control instructions is also arranged on the controller, which facilitates the application of this device to unmanned optoelectronic devices (such as unmanned combat vehicles). The fine-tuning fixing base is in the shape of a rectangular plate, and fixing holes are respectively formed at the four corners of the fine-tuning fixing base.

[0035] The working principle of the present invention is that this laser information field optical axis electric fine-tuning mechanism is mainly applied in the optical axis calibration process of unmanned optoelectronic equipment. By wirelessly transmitting corresponding control instructions to drive the azimuth adjustment component and the elevation adjustment component to perform fine-tuning work on the optical axis, it can solve the problem that the optical axis of unmanned optoelectronic equipment cannot be quickly calibrated after a small deviation occurs during the mission execution process, thereby improving the accuracy of unmanned optoelectronic equipment during use. The controller controls the forward and reverse rotation of two coreless brushed motors to perform fine-tuning of the optical axis in the elevation and azimuth directions. Using the control handle to transmit control instructions can precisely control the rotation angle of the two coreless brushed motors. During the calibration process, the difference between each optical axis can be clearly displayed on the supporting display and control console, which is convenient for the overall machine optical axis calibration. With the development of image automatic recognition technology, this fine-tuning mechanism can be extended and applied in the aspect of fully automatic optical axis calibration.

[0036] For example, during the optical path calibration process of the laser guidance weapon system information field, the assembly and adjustment master first needs to calibrate the indicators such as the field of view and resolution of the main aiming optical path to meet the use requirements, and then perform the calibration work of the laser information field optical path based on the main aiming optical path. After the laser information field optical path is calibrated to be parallel to the main aiming optical path, after the product undergoes environmental tests such as shock vibration and high and low temperatures, the parallelism between the calibrated laser information field optical axis and the daytime aiming optical axis will deviate. At this time, the assembly and adjustment master needs to perform full-electric correction according to the deviation amount of the laser information field optical axis relative to the aiming optical axis in the elevation and azimuth directions. By using the elevation and azimuth operation buttons supporting the controller to control the forward and reverse rotation of the azimuth adjustment motor and the elevation adjustment motor, the calibration of the parallelism between the zero-instruction optical axis of the laser information field and the daytime aiming optical axis is achieved.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A laser information field optical axis electric fine-tuning mechanism for correcting the parallelism of the zero-command optical axis and the daytime aiming optical axis of an unmanned optoelectronic equipment, comprising an optical axis correction plate glass and a fine-tuning fixing seat, wherein the optical axis correction plate glass is disposed within a frame support, characterized in that: It also includes a controller, an elevation adjustment component, and an azimuth adjustment component. The frame support is hinged to a U-shaped connector via a pin. The U-shaped connector is rotatably connected to a fine-tuning fixing seat. The azimuth adjustment component and the elevation adjustment component are both located on the side of the fine-tuning fixing seat away from the U-shaped connector. The azimuth adjustment component can drive the U-shaped connector to adjust the azimuth angle, and the elevation adjustment component can drive the frame support to adjust the elevation angle around the pin. Both the azimuth adjustment component and the elevation adjustment component are electrically adjustable. The controller is electrically connected to the azimuth adjustment motor and the elevation adjustment motor, respectively, and the controller is also equipped with a wireless receiving module that can receive remote wireless control commands. The azimuth adjustment assembly includes a rotating shaft, a sector worm gear, a worm shaft, an azimuth adjustment motor, and two support plates oppositely arranged on a fine-tuning fixed base. The rotating shaft passes through and is rotatably connected to the fine-tuning fixed base. One end of the rotating shaft is fixedly connected to a U-shaped connector, and the other end of the rotating shaft is fixedly connected to the sector worm gear. The worm shaft meshes with the sector worm gear, and both ends of the worm shaft are rotatably connected to the two support plates via bearings. The output shaft of the azimuth adjustment motor is connected to one end of the worm gear via a coupling, and the azimuth adjustment motor is connected to the fine-tuning fixed base via a motor support. The height adjustment assembly includes a drive mechanism and a guide mechanism. The drive mechanism includes a ball-end stud, a height adjustment worm gear, a worm, and a height adjustment motor. The height adjustment worm gear has a threaded through hole along its center along the axial direction. One end of the worm gear is the worm wheel portion, and the other end is a connecting portion. The connecting portion passes through and is rotatably connected to the fine-tuning fixing seat. The ball-end stud is threaded into the threaded through hole, and the length of the ball-end stud is longer than the length of the height adjustment worm gear. The ball end of the ball-end stud abuts against one end of the frame support. The height adjustment worm... The wheel meshes with the worm gear two, and the two ends of the worm gear two are also rotatably connected to two support plates through bearings. The output shaft of the height adjustment motor is connected to one end of the worm gear two through a coupling two, and the height adjustment motor is connected to the fine-tuning fixed seat through a motor support two. The guiding mechanism includes a ball-head guide post, a compression spring, and a guide groove. The guide groove is located in the fine-tuning fixed seat. The ball-head guide post is telescopically connected in the guide groove through the compression spring, and the ball end of the ball-head guide post abuts against the end of the frame support away from the ball-head stud.

2. The laser information field optical axis electric fine-tuning mechanism according to claim 1, characterized in that: The sector-shaped worm gear is fixedly connected to the rotating shaft by a locating pin.

3. The laser information field optical axis electric fine-tuning mechanism according to claim 1, characterized in that: One end of the connecting part is provided with a positioning surface that abuts against the fine-tuning fixing seat, and the other end passes through the fine-tuning fixing seat and is provided with a shaft elastic retaining ring that can prevent the connecting part from axially moving.

4. The laser information field optical axis electric fine-tuning mechanism according to claim 1, characterized in that: Both the azimuth adjustment motor and the elevation adjustment motor are hollow cup brushed motors.

5. The laser information field optical axis electric fine-tuning mechanism according to claim 1, characterized in that: The guiding mechanism also includes a guide plate, which is fixedly connected to the fine-tuning fixing seat by screws, and the working end of the guide plate matches and slides with the side wall of the ball head stud.

6. The laser information field optical axis electric fine-tuning mechanism according to claim 1, characterized in that: The fine-tuning fixing seat has a rectangular plate structure, and fixing holes are opened at the four corners of the fine-tuning fixing seat.

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