Zoom galvanometer for laser weeding and deinsectization unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicle weeding, and discloses a variable-focus galvanometer for a laser weeding and deinsectization unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, and the bottom of the unmanned aerial vehicle body is fixedly connected with a galvanometer assembly. According to the field lens, through the design of the adjusting mechanism, the focal length of the lens can be flexibly adjusted according to actual requirements, the micro gear motor drives the driving gear to be matched with the driving outer gear ring, so that the outer cylinder drives the field lens to rotate, the focal length is adjusted, and the design can meet the weeding requirements of different heights and distances; the working precision and efficiency are improved, the cost of the variable long-focus galvanometer is reduced to the maximum degree on the premise that the laser weeding requirement is met, the outer cylinder can be manually rotated to enable the tooth groove to rotate on the driven outer gear ring, then the focal length of the field lens can be manually adjusted, the effect of manually and electrically adjusting the focal length of the galvanometer is achieved, and the working efficiency is improved. And the practicability of the laser weeding device is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of drone weeding technology, specifically a variable focus galvanometer for laser weeding and insect removal drones. Background Technology

[0002] With the development of agricultural modernization, drone technology is being used more and more widely in the agricultural field, especially in weeding and pest control. Drones can efficiently and accurately complete large-area farmland operations. Laser weeding technology, as an emerging agricultural technology, has advantages such as being pollution-free, highly efficient, and highly accurate, and is gradually becoming an important method of agricultural weeding. However, existing laser weeding drones have the following problems in practical applications: the existing galvanometers are close to the focal length (200-1200mm) and have a small focal plane (400*400mm), which cannot be used in laser weeding and pest control drones, and the focal length cannot be flexibly adjusted, limiting the drone's operating range. Utility Model Content

[0003] The purpose of this invention is to provide a variable focus galvanometer for laser weeding and insect-removing drones to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a variable focus galvanometer for a laser weeding and insect-removing drone, comprising a drone body, a galvanometer assembly fixedly connected to the bottom of the drone body, and an adjustment mechanism for adjusting the lens focal length installed at the end of the galvanometer assembly away from the drone body.

[0005] The adjustment mechanism includes a limiting shell, which is fixedly connected to the galvanometer assembly. A micro geared motor is fixedly connected to the limiting shell, and a drive gear is fixedly connected to the output end of the micro geared motor. An outer cylinder is rotatably connected to the limiting shell, and an active external gear ring is fixedly connected to the outer cylinder. The active external gear ring is meshed with the drive gear. A connecting cylinder is sleeved on the limiting shell and fixedly connected to the galvanometer assembly. A driven external gear ring is fixedly connected to the connecting cylinder. The outer cylinder has a toothed groove that meshes with the driven external gear ring. A field lens for photographing weeds is fixedly connected to the outer cylinder.

[0006] As a further preferred embodiment of this technical solution: the side of the drone body is fixedly connected to a support rod, and two sets of support rods are equipped with a retraction mechanism for adjusting the angle of the bracket on the drone body. The retraction mechanism includes a threaded rod, which is rotatably connected to the support rod. A threaded block is threaded through the threaded rod, and a drive link is hinged to the threaded block. Meanwhile, a sleeve is fixedly connected to the bottom of the drone body, and a support leg is rotatably connected through the sleeve. A support plate for supporting the drone body is fixedly connected to the end of the support leg away from the sleeve. The end of the drive link away from the threaded block is hinged to the support plate. A rotating rod is fixedly connected to the end of the threaded rod away from the support rod, and the rotating rod is rotatably connected through the support rod. A turntable for driving the retraction mechanism is fixedly connected to the end of the rotating rod away from the threaded rod.

[0007] As a further preferred embodiment of this technical solution: the end of the support rod away from the UAV body is rotatably connected to a rotating shaft, and a blade for driving the UAV body to take off is fixedly connected through the rotating shaft;

[0008] As a further preferred embodiment of this technical solution: a laser for removing weeds is fixedly connected inside the galvanometer assembly, and a first servo motor is fixedly connected inside the galvanometer assembly. A first reflective lens for reflecting the laser light from the laser is fixedly connected to the output end of the first servo motor. At the same time, a second servo motor is fixedly connected to the galvanometer assembly, and a second reflective lens for reflecting the laser light from the laser is fixedly connected to the output end of the second servo motor.

[0009] As a further preferred embodiment of this technical solution: the bottom of the galvanometer assembly is provided with a light-transmitting hole, and the light-transmitting hole is located directly below the second reflecting mirror, while the adjustment mechanism is installed directly below the light-transmitting hole;

[0010] As a further preferred embodiment of this technical solution: the support plate is provided with pads to prevent the UAV body from sliding, and there are two sets of pads on the support plate, with the two sets of pads located at both ends of the support plate respectively;

[0011] As a further preferred embodiment of this technical solution: the limiting shell is provided with a square opening, and the drive gear meshes with the active external gear ring through the square opening, while the drive gear passes through the square opening.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, through the design of the adjustment mechanism, the lens focal length can be flexibly adjusted according to actual needs. The micro reduction motor drives the drive gear and the active external gear ring to rotate the field lens, thereby realizing the adjustment of the focal length. This design can adapt to the weeding needs of different heights and distances, improve the accuracy and efficiency of operation, and at the same time, while taking into account the requirements of laser weeding, minimize the cost of the variable focal length galvanometer. Secondly, the outer cylinder can also be manually rotated to make the tooth groove rotate on the driven external gear ring, thereby manually adjusting the focal length of the field lens. This achieves the effect of manual and electric adjustment of the galvanometer focal length, greatly improving the practicality of the laser weeding device.

[0014] 2. In this utility model, the rotation of the threaded rod drives the threaded block to move, the movement of the threaded block drives the drive linkage to rotate, and the rotation of the drive linkage drives the support leg to be extended and retracted on the drone body, thereby making it convenient for users to carry the weeding drone. At the same time, the angle of the support leg can be adjusted according to the angle of the ground to increase the stability of the drone body. Attached Figure Description

[0015] Figure 1 This invention relates to a three-dimensional variable-focus galvanometer for laser weeding and pest control drones. Figure 1 ;

[0016] Figure 2 This invention relates to a three-dimensional variable-focus galvanometer for laser weeding and pest control drones. Figure 2 ;

[0017] Figure 3 This invention relates to a localized explosion of a variable-focus galvanometer for a laser-based weeding and pest-removing drone. Figure 1 ;

[0018] Figure 4 This invention relates to a localized explosion of a variable-focus galvanometer for a laser-based weeding and pest-removing drone. Figure 2 ;

[0019] Figure 5 This is a partial structural cross-sectional view of a variable focus galvanometer for a laser weeding and insect-removing drone according to the present invention.

[0020] Figure 6 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 7 for Figure 2 Enlarged view of point B in the middle.

[0022] Legend: 1. UAV body; 2. Galvanometer assembly; 3. Adjustment mechanism; 31. Limiting shell; 32. Miniature geared motor; 33. Drive gear; 34. Outer cylinder; 35. Active external gear ring; 36. Field lens; 37. Connecting cylinder; 38. Driven external gear ring; 39. Gear groove; 310. Square opening; 4. Support rod; 5. Retraction and extension mechanism; 51. Threaded rod; 52. Threaded block; 53. Drive connecting rod; 54. Sleeve; 55. Support leg; 56. Support plate; 57. Rotating rod; 58. Turntable; 6. Rotating shaft; 7. Blade; 8. Laser; 9. First servo motor; 10. Second servo motor; 11. First reflecting mirror; 12. Second reflecting mirror; 13. Light-transmitting hole; 14. Pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] Please see Figures 1-7 As shown, this utility model provides a technical solution: a variable focus galvanometer for a laser weeding and insect-removing drone, including a drone body 1, a galvanometer assembly 2 fixedly connected to the bottom of the drone body 1, and an adjustment mechanism 3 for adjusting the lens focal length installed at the end of the galvanometer assembly 2 away from the drone body 1.

[0026] The adjusting mechanism 3 includes a limiting housing 31, which is fixedly connected to the galvanometer assembly 2. A micro geared motor 32 is fixedly connected to the limiting housing 31, and a drive gear 33 is fixedly connected to the output end of the micro geared motor 32. An outer cylinder 34 is rotatably connected to the limiting housing 31, and a driving external gear ring 35 is fixedly connected to the outer cylinder 34. The driving external gear ring 35 is meshed with the drive gear 33. A connecting cylinder 37 is sleeved on the limiting housing 31 and is fixedly connected to... On the galvanometer assembly 2, a driven external gear ring 38 is fixedly connected to the connecting cylinder 37, and a toothed groove 39 is provided on the outer cylinder 34, which is engaged with the driven external gear ring 38. At the same time, a field lens 36 for photographing weeds is fixedly connected to the outer cylinder 34. Furthermore, the limiting shell 31, the connecting cylinder 37, and the outer cylinder 34 are arranged vertically on the galvanometer assembly 2. At the same time, nine sets of galvanometer assembly 2 and adjustment mechanism 3 are distributed on the UAV body 1 (not shown in the figure).

[0027] In this embodiment, specifically: a support rod 4 is fixedly connected to the side of the drone body 1, and a retraction mechanism 5 for adjusting the angle of the bracket on the drone body 1 is installed on the two sets of support rods 4. The retraction mechanism 5 includes a threaded rod 51, which is rotatably connected to the support rod 4. A threaded block 52 is threaded through the threaded rod 51, and a drive connecting rod 53 is hinged to the threaded block 52. At the same time, a sleeve 54 is fixedly connected to the bottom of the drone body 1, and a support leg 55 is rotatably connected through the sleeve 54, with the support leg 55 located away from the sleeve. One end of 54 is fixedly connected to a support plate 56 that supports the drone body 1. At the same time, the end of the drive link 53 away from the threaded block 52 is hinged to the support plate 56. The end of the threaded rod 51 away from the support rod 4 is fixedly connected to a rotating rod 57, and the rotating rod 57 is rotatably connected to the support rod 4. At the same time, the end of the rotating rod 57 away from the threaded rod 51 is fixedly connected to a turntable 58 for driving the take-up and take-down mechanism 5 to move. The threaded block 52 slides on the inner wall of the support rod 4. At the same time, the two sets of drive links 53 are at an obtuse angle on both sides of the drone body 1.

[0028] In this embodiment, specifically: the end of the support rod 4 away from the drone body 1 is rotatably connected to a rotating shaft 6, and a blade 7 for driving the drone body 1 to take off is fixedly connected through the rotating shaft 6, and four sets of blades 7 are provided on a set of rotating shafts 6. At the same time, the rotating shaft 6 is electrically connected to the computer that controls the drone body 1.

[0029] In this embodiment, specifically: a laser 8 for removing weeds is fixedly connected inside the galvanometer assembly 2, and a first servo motor 9 is fixedly connected inside the galvanometer assembly 2. A first reflecting mirror 11 for reflecting the laser from the laser 8 is fixedly connected to the output end of the first servo motor 9. At the same time, a second servo motor 10 is fixedly connected to the galvanometer assembly 2. A second reflecting mirror 12 for reflecting the laser from the laser 8 is fixedly connected to the output end of the second servo motor 10. The first reflecting mirror 11 is located on the side directly in front of the laser 8, and the second reflecting mirror 12 is located on the side below the first reflecting mirror 11.

[0030] In this embodiment, specifically: the bottom of the galvanometer assembly 2 is provided with a light-transmitting hole 13, and the light-transmitting hole 13 is located directly below the second reflecting lens 12. At the same time, the adjustment mechanism 3 is installed directly below the light-transmitting hole 13, and the field lens 36 on the adjustment mechanism 3 can have a variable focal length of 3 to 5m, while the focal plane reaches 2500*2500mm.

[0031] In this embodiment, specifically: the support plate 56 is provided with a pad 14 for preventing the drone body 1 from sliding, and there are two sets of pads 14 on the support plate 56. The two sets of pads 14 are located at both ends of the support plate 56 respectively, and the material of the pads 14 is rubber.

[0032] In this embodiment, specifically: the limiting shell 31 is provided with a square opening 310, and the drive gear 33 meshes with the active external gear ring 35 through the square opening 310. At the same time, the drive gear 33 passes through the square opening 310, and the width of the square opening 310 is greater than the width of the drive gear 33.

[0033] Working principle or structural principle: First, the laser 8 is activated, emitting laser light. Simultaneously, the sensor installed in the galvanometer assembly 2 controls the activation of the first servo motor 9 and the second servo motor 10. The outputs of the first servo motor 9 and the second servo motor 10 drive the first reflecting mirror 11 and the second reflecting mirror 12 to rotate, so that the first reflecting mirror 11 and the second reflecting mirror 12 accurately reflect the laser light emitted by the laser 8 to the field lens 36 to remove weeds. Then, the drone body 1 is activated, and the drone body 1 moves the device to remove weeds. At the same time, when it is necessary to adjust the focal length of the field lens 36, the outer cylinder 34 can be manually rotated so that its toothed groove 39 is in the driven outer toothed ring 38. The upward rotation adjusts the focal length of the field lens 36, enabling it to achieve the weeding requirements of a 3-5m long focal length. Simultaneously, during weeding, the computer controls the change in focal length of the field lens 36. The computer controls the motor 32 to start, which in turn drives the drive gear 33 and the active external gear ring 35, causing the outer cylinder 34 to rotate the field lens 36, thus adjusting the focal length. This meets the needs of the UAV 1 for laser weeding when flying at an altitude of approximately 4m. After setting the focal length, the mechanical zoom device can be locked, operating in a fixed-focus state. This approach minimizes the cost of the variable focal length galvanometer while still meeting the requirements of laser weeding.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A variable-focus galvanometer for a laser-based weeding and pest-control drone, comprising a drone body (1), wherein a galvanometer assembly (2) is fixedly attached to the bottom of the drone body (1), characterized in that: The end of the galvanometer assembly (2) away from the UAV body (1) is equipped with an adjustment mechanism (3) for adjusting the lens focal length; The adjustment mechanism (3) includes a limiting shell (31), which is fixedly connected to the galvanometer assembly (2). A micro geared motor (32) is fixedly connected to the limiting shell (31), and a drive gear (33) is fixedly connected to the output end of the micro geared motor (32). An outer cylinder (34) is rotatably connected to the limiting shell (31), and an active external gear ring (35) is fixedly connected to the outer cylinder (34). The active external gear ring (35) meshes with the galvanometer assembly (2). The limiting housing (31) is connected to the drive gear (33), and a connecting cylinder (37) is sleeved on the limiting housing (31). The connecting cylinder (37) is fixed to the galvanometer assembly (2). A driven external gear ring (38) is fixed on the connecting cylinder (37). At the same time, a toothed groove (39) is provided on the outer cylinder (34), and the toothed groove (39) is meshed with the driven external gear ring (38). Meanwhile, a field lens (36) for photographing weeds is fixed on the outer cylinder (34).

2. The variable-focus galvanometer for a laser weeding and pest control drone according to claim 1, characterized in that: The side of the UAV body (1) is fixedly connected to a support rod (4), and two sets of support rods (4) are equipped with a retraction mechanism (5) for adjusting the angle of the bracket on the UAV body (1). The retraction mechanism (5) includes a threaded rod (51), which is rotatably connected to the support rod (4). A threaded block (52) is threaded through the threaded rod (51), and a drive connecting rod (53) is hinged to the threaded block (52). At the same time, a sleeve (54) is fixedly connected to the bottom of the UAV body (1), and a rotatable connecting rod (53) is threaded through the sleeve (54). A support leg (55) is attached, and a support plate (56) for supporting the UAV body (1) is fixedly attached to the end of the support leg (55) away from the sleeve (54). At the same time, the end of the drive link (53) away from the threaded block (52) is hinged to the support plate (56). The end of the threaded rod (51) away from the support rod (4) is fixedly attached to a rotating rod (57), and the rotating rod (57) is rotatably connected to the support rod (4). At the same time, the end of the rotating rod (57) away from the threaded rod (51) is fixedly attached to a turntable (58) for driving the retraction mechanism (5) to move.

3. The variable-focus galvanometer for a laser weeding and pest control drone according to claim 2, characterized in that: The support rod (4) is rotatably connected to a shaft (6) at the end away from the UAV body (1), and a blade (7) for driving the UAV body (1) to take off is fixed through the shaft (6).

4. The variable-focus galvanometer for a laser weeding and insect-removing drone according to claim 3, characterized in that: The galvanometer assembly (2) is equipped with a laser (8) for removing weeds, and a first servo motor (9) is also equipped with the galvanometer assembly (2). The output end of the first servo motor (9) is equipped with a first reflecting mirror (11) for reflecting the laser from the laser (8). At the same time, a second servo motor (10) is also equipped with the galvanometer assembly (2), and the output end of the second servo motor (10) is equipped with a second reflecting mirror (12) for reflecting the laser from the laser (8).

5. A variable-focus galvanometer for a laser weeding and pest control drone according to claim 4, characterized in that: The bottom of the galvanometer assembly (2) is provided with a light-transmitting hole (13), and the light-transmitting hole (13) is located directly below the second reflecting mirror (12). At the same time, the adjustment mechanism (3) is installed directly below the light-transmitting hole (13).

6. A variable-focus galvanometer for a laser weeding and insect-removing drone according to claim 5, characterized in that: The support plate (56) is provided with pads (14) to prevent the drone body (1) from sliding, and there are two sets of pads (14) on the support plate (56), with the two sets of pads (14) located at both ends of the support plate (56).

7. A variable-focus galvanometer for a laser weeding and pest control drone according to claim 6, characterized in that: The limiting shell (31) is provided with a square opening (310), and the drive gear (33) meshes with the active external gear ring (35) through the square opening (310), while the drive gear (33) passes through the square opening (310).

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