Portable near-infrared spectrometer capable of automatically rotating and detecting

Abstract

The utility model discloses a portable near-infrared spectrometer capable of automatically rotating and detecting, which comprises an optical cavity lens arranged at one end of a shell, an optical cavity cone component, an optical cavity bracket and a main control board component which are sequentially arranged in the shell, and a motor component which is arranged on the side surface of the optical cavity cone component and is meshed with a large gear of the optical cavity cone component, the optical cavity lens is connected with one end, far away from the bull gear, of the optical cavity cone assembly, a motor of the driving motor assembly rotates to drive a detection vessel containing a sample on the optical cavity lens to rotate along with the bull gear, and light irradiates the sample of the detection vessel and is reflected to a sensor of the main control panel assembly to complete detection. The near-infrared spectrometer provided by the utility model can automatically rotate for detection, is simple to operate, can be suitable for non-laboratory environments such as production lines and outdoors, has a certain sealing grade, and can be used in part of high-humidity environments.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrum detection, in particular to a portable near-infrared spectrometer capable of automatic rotation detection. Background Art

[0002] With the increasing application of spectral detection technology, traditional detection methods are no longer able to meet new detection scenarios or production needs. Traditional detection methods use large-scale testing equipment in laboratories, separating the laboratory from the production line. Samples are prepared and then sent to the laboratory for testing. This lengthy sample delivery process affects the real-time nature of sample analysis, thereby impacting production efficiency. Furthermore, the costs of setting up the laboratory environment, purchasing large-scale testing equipment, and sending samples for testing are high.

[0003] New application scenarios require that the spectrometer should be portable, capable of automatic detection, low-cost, and easy to operate. To this end, we propose a portable near-infrared spectrometer with automatic rotation detection. Utility Model Content

[0004] The purpose of the utility model is to provide a portable near-infrared spectrometer capable of automatic rotation detection, which is used to solve the technical problems in the prior art that the detection equipment used in the traditional detection method is large, inconvenient to carry and cannot be automatically detected.

[0005] The utility model solves the above problems through the following technical solutions:

[0006] A portable near-infrared spectrometer capable of automatic rotation detection comprises an optical cavity lens arranged at one end of a housing, an optical cavity cone assembly, an optical cavity bracket and a main control board assembly sequentially arranged in the housing, and a motor assembly arranged at a side of the optical cavity cone assembly and meshing with a large gear of the optical cavity cone assembly. The optical cavity lens is connected to one end of the large gear of the optical cavity cone assembly. By driving the motor of the motor assembly to rotate, a detection dish with a sample mounted on the optical cavity lens is driven to rotate along with the large gear. Light irradiates the sample in the detection dish and is reflected to a sensor of the main control board assembly to complete detection.

[0007] As a further improvement, the optical cavity cone assembly and the optical cavity bracket are connected through positioning pins and positioning holes, and the motor of the driving motor assembly is arranged at one end away from the optical cavity cone assembly and passes through the optical cavity bracket.

[0008] As a further improvement, the near-infrared spectrometer is further provided with a decorative panel assembly, which is arranged in the housing between the optical cavity lens and the optical cavity cone assembly.

[0009] As a further improvement, the wiring harness of the decorative panel assembly is arranged through the optical cavity bracket and is sealed by a rubber plug.

[0010] As a further improvement, a plurality of halogen tungsten lamp boards for providing light are provided on the side of the main control board assembly facing the optical cavity cone assembly.

[0011] As a further improvement, the main control board assembly and the optical cavity cone assembly are connected via studs.

[0012] As a further improvement, a battery compartment assembly and a sealing cover assembly are provided on the side of the main control board assembly away from the optical cavity cone assembly. The battery compartment assembly is provided on the main control board assembly, and the sealing cover assembly is connected to the positioning hole of the optical cavity bracket through a positioning pin.

[0013] As a further improvement, the housing includes an upper shell and a lower shell, the upper shell and the lower shell are embedded, and an upgrade button cover is provided at the end of the lower shell.

[0014] As a further improvement, the main control board assembly is provided with a motor controller for controlling the motor.

[0015] As a further improvement, the motor assembly includes a motor, a bracket and a pinion, wherein the rotating shaft of the motor passes through the bracket and is connected to the pinion, so that the motor assembly is set on the optical cavity cone assembly through the bracket, and the pinion is meshed with the large gear of the motor assembly;

[0016] The optical cavity cone assembly includes a deep groove ball bearing, an optical cavity cone and a large gear. The deep groove ball bearing is sleeved on one end of the optical cavity cone, and the large gear is fixedly arranged outside the deep groove ball bearing so that the large gear can rotate on the optical cavity cone.

[0017] The main control board assembly includes a main control board and a plurality of lens assemblies arranged on one side of the main control board, and the lens assemblies are arranged facing the optical cavity cone assembly.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] (1) The near-infrared spectrometer of the present invention adopts a combined transmission mechanism in which a deep groove ball bearing is inserted into an optical cavity cone, a large gear is inserted into the deep groove ball bearing, a small gear is inserted into a motor shaft, and the motor is installed on the optical cavity cone to achieve rotation control.

[0020] (2) The optical cavity cone and the motor bracket of the utility model are installed in a limiting manner using a square boss and a square hole. The length of the hole is greater than the boss. After the transmission mechanism is installed, the center distance of the large and small gears can be adjusted within a certain range.

[0021] (3) The cavity of the near-infrared spectrometer connected to the optical cavity of the present invention adopts a sealed design and has a certain degree of waterproofness. The sealing design includes: the mounting bracket and the sealing cover outlet hole use rubber plugs to fix the wiring harness and seal it with hot melt adhesive. The rubber plug contains a snap-fit ​​structure and has an opening on the side for threading; the optical cavity cone and the sealing cover opening are sealed with sealing rings respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of an explosion of a portable near-infrared spectrometer capable of automatic rotation detection;

[0023] Figure 2 This is a schematic structural diagram of the optical cavity cone assembly of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the motor assembly of the utility model;

[0025] Figure 4 This is a schematic structural diagram of the decorative panel assembly of the present invention;

[0026] Figure 5 This is a schematic structural diagram of the sealing cover assembly of the utility model;

[0027] Figure 6 This is a structural diagram of the main control board assembly of the utility model;

[0028] Figure 7 This is a structural diagram of the battery compartment assembly of the utility model;

[0029] Figure 8 This is a first schematic diagram of the complete assembly of the near-infrared spectrometer of the utility model;

[0030] Figure 9 A second schematic diagram of the complete assembly of the near-infrared spectrometer of the present invention;

[0031] Figure 10 The third schematic diagram of the complete assembly of the near-infrared spectrometer of the utility model;

[0032] Figure 11 A fourth schematic diagram of the complete assembly of the near-infrared spectrometer of the present invention;

[0033] Figure 12 A fifth schematic diagram of the complete assembly of the near-infrared spectrometer of the present invention;

[0034] Figure 13 The sixth schematic diagram of the complete assembly of the near-infrared spectrometer of the present invention;

[0035] Figure 14 The seventh schematic diagram of the complete assembly of the near-infrared spectrometer of the present utility model;

[0036] Figure 15 The eighth schematic diagram of the complete assembly of the near-infrared spectrometer of the present utility model;

[0037] Figure 16 The ninth schematic diagram of the complete assembly of the near-infrared spectrometer of the present utility model;

[0038] Figure 17 The tenth schematic diagram of the complete assembly of the near-infrared spectrometer of the present utility model;

[0039] Figure 18 This is a schematic diagram of the cooperation between the near-infrared spectrometer and the measuring dish of the utility model.

[0040] Reference numerals:

[0041] 1. Optical cavity cone assembly; 2. Motor assembly; 3. Decorative panel assembly; 4. Sealing cover assembly; 5. Main control board assembly; 6. Battery compartment assembly; 7. Optical cavity cone; 8. Deep groove ball bearing; 9. Wire retaining ring for shaft; 10. Large gear; 11. Washer; 12. Pressing piece; 13. Motor; 14. Bracket; 15. Small gear; 16. Light guide column; 17. Decorative panel; 18. Indicator panel; 19. Key cap; 20. Key; 21. Switch board; 22. Bluetooth antenna; 23. First vibration damping block; 24. Second vibration damping block; 25. Sealing cover; 26. Sealing ring; 27. Lens; 28. Lens sleeve; 29. ​​Main control board; 30. Third vibration damping block; 31. Fourth vibration damping block; 32. Battery compartment; 33. Optical cavity bracket; 34. Upper shell; 35. First rubber plug; 36. Second rubber plug; 37. Halogen tungsten lamp board; 38. Double-headed stud; 39. Battery; 40. Motor controller; 41. Third rubber plug; 42. Lower shell; 43. Light guide column; 44. Charging adapter board; 45. Upgrade button cover; 46. Foot pad; 47. Nameplate; 48. Optical cavity lens. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] Example:

[0044] Combined with attachment Figure 1-18As shown, a portable near-infrared spectrometer with automatic rotation detection meets the requirements of portability, automated detection, low cost, and simple operation. It includes an optical cavity lens 48 disposed at one end of a housing, an optical cavity cone assembly 1, an optical cavity bracket 33, and a main control board assembly 5, which are sequentially disposed within the housing, and a motor assembly 2 disposed on the side of the optical cavity cone assembly 1 and meshing with the large gear 10 of the optical cavity cone assembly 1. The optical cavity lens is connected to one end of the large gear 10 of the optical cavity cone assembly 1. Using this near-infrared spectrometer for detection, a test dish containing a sample is placed above the optical cavity lens of the near-infrared spectrometer. Using a mobile phone app via Bluetooth, the device is connected to select a detection mode and input a detection command. This drives the motor of the motor assembly to rotate, causing the test dish containing the sample on the optical cavity lens to rotate along with the large gear. Light strikes the sample and is then reflected and transmitted to the sensor of the main control board assembly below, completing the detection. The detection data is transmitted to the server, analyzed according to the established model, and the results are returned.

[0045] Furthermore, the optical cavity cone assembly 1 and the optical cavity bracket 33 are connected through positioning pins and positioning holes, and the motor of the driving motor assembly is arranged at one end away from the optical cavity cone assembly 1 and passes through the optical cavity bracket 33.

[0046] In this embodiment, the near-infrared spectrometer is further provided with a decorative panel assembly 3, which is disposed in the housing between the optical cavity lens 48 and the optical cavity cone assembly 1. The wiring harness of the decorative panel assembly 3 is passed through the optical cavity bracket and sealed with a rubber plug to achieve a sealing effect.

[0047] The main control board assembly 5, facing the optical cavity cone assembly 1, is equipped with several halogen tungsten lamp panels 37 that provide light. The main control board assembly 5 and the optical cavity cone assembly are connected via studs 38. A battery compartment assembly 6 and a sealing cover assembly 4 are located on the side of the main control board assembly 5 facing away from the optical cavity cone assembly 1. The battery compartment assembly 6 is mounted on the main control board assembly 5, and the sealing cover assembly 4 is connected to the positioning holes of the optical cavity bracket via locating pins. Preferably, the main control board assembly 5 is equipped with a motor controller 40 that controls the motor.

[0048] Optionally, the housing of this embodiment includes an upper housing 34 and a lower housing 42 , the upper housing and the lower housing are fitted together, and an upgrade button cover 45 is provided at the end of the lower housing.

[0049] In a specific embodiment, a portable near-infrared spectrometer capable of automatic rotation detection, wherein, with reference to the attached Figure 3 The motor assembly 2 includes a motor 13, a bracket 14 and a pinion 15. The motor shaft passes through the bracket 14 and is connected to the pinion 15, so that the motor assembly 2 can be set on the optical cavity cone assembly 1 through the bracket 14, and the pinion 15 can be engaged with the large gear 10 of the motor assembly 2.

[0050] Refer to the attached Figure 2The optical cavity cone assembly 1 includes a deep groove ball bearing 8, an optical cavity cone 7, a shaft wire retaining ring 9, and a large gear 10. The deep groove ball bearing 8 is sleeved on one end of the optical cavity cone 7, and the shaft wire retaining ring 9 is set at the optical cavity cone mouth on the side of the optical cavity cone 7 where the deep groove ball bearing 8 is set. The large gear 10 is set outside the deep groove ball bearing 8 so that the large gear 10 can rotate on the optical cavity cone. Preferably, the large gear 10 and the deep groove ball bearing 8 are fixed by a clamping member 12 and a screw. Furthermore, a gasket 11 is set in the end of the large gear 10 away from the optical cavity cone 7 for sealing with the decorative panel assembly 3.

[0051] Specifically, the optical cavity cone 7 includes a conical detection cavity, a cylindrical bearing mounting structure, a lamp hole, a lamp board mounting structure, a control board mounting structure, and a motor bracket mounting structure. The large gear 10 includes an upper rotating workbench and a lower spur gear structure, with gear parameters of module 1 and 128 teeth. The small gear includes an upper spur gear structure and a lower shaft fixing structure, with gear parameters of module 1 and 20 teeth. The reduction ratio between the two is 6.4. The optical cavity cone 7 and the bracket 14 are installed using a square positioning boss and a square positioning hole. The positioning hole is longer than the positioning boss, and the two can move in the direction of the center line of the large and small gears. After the components are installed, the center distance between the large and small gears can be adjusted within a certain range to improve the gear processing accuracy and the problem of transmission instability caused by installation deviation.

[0052] Refer to the attached Figure 4 The decorative panel assembly 3 includes a decorative panel 17, a light guide 16 mounted on the decorative panel 17, and a Bluetooth antenna 22. An indicator light panel 18 is clipped onto the light guide 16. One end of the Bluetooth antenna 22 is adhered to the decorative panel 17. Optionally, the decorative panel 17 also includes holes for receiving a key cap 19 and a key 20. These holes snap into place via a switch plate 21, allowing them to be press-fitted. The assembled key cap and key achieve the appearance of a metal key with the elastic properties of a plastic key.

[0053] Refer to the attached Figure 6 The main control board assembly 5 includes a main control board 29 and several lens assemblies disposed on one side of the main control board, facing the optical cavity cone assembly 1. Preferably, the lens assembly includes a lens 27 and a lens sleeve 28. One end of the lens sleeve 28 is provided with the lens 27, and the other end is plugged into the sensor of the main control board 29 to mount the lens 27 on the main control board 29.

[0054] Refer to the attached Figure 7The battery compartment assembly 6 includes a battery, a battery compartment 32, and several vibration-damping blocks disposed within the compartment. The battery 39 is disposed within the compartment and is positioned outside the vibration-damping blocks disposed within the compartment. The battery compartment assembly 6 includes at least two vibration-damping blocks: a third vibration-damping block 30 and a fourth vibration-damping block 31. The third and fourth vibration-damping blocks 30 and 31 are adhesively secured to the battery compartment. The battery is installed in the compartment and protected by the vibration-damping blocks.

[0055] Refer to the attached Figure 5 The sealing cover assembly 4 includes a sealing cover 25 and several vibration-damping blocks disposed within the sealing cover. The sealing cover 25 has an opening groove formed in the end facing the battery compartment assembly 6 for receiving a sealing ring 26, which is adhered to the opening of the sealing cover. The sealing cover assembly 4 includes at least two vibration-damping blocks, namely a first vibration-damping block 23 and a second vibration-damping block 24, which are adhered and fixed to the sealing cover 25.

[0056] In this embodiment, the near-infrared spectrometer is further provided with an optical cavity bracket 33 , an upper shell 34 , a lower shell 42 and an upgrade button cover 45 , and the upper shell 34 and the lower shell 42 constitute the housing.

[0057] In the near-infrared spectrometer of this embodiment, the deep groove ball bearing 8 is fixed on the cylindrical outer diameter of the optical cavity cone 7, the large gear 10 is fixed on the deep groove ball bearing 8, the motor is installed on the motor bracket, the small gear is installed on the motor shaft, and the motor assembly is then installed on the optical cavity cone 7, completing the installation of the optical cavity cone assembly and the transmission assembly. The two are then installed on the optical cavity bracket 33, and then the housing and decorative panel assembly are installed. Then, circuit boards such as the light board and control board, batteries, etc. are installed, and then the sealing cover assembly is installed. The optical cavity bracket and the sealing cover include a wire outlet hole, and the wiring harness passes through the wire outlet hole and is fixed with a rubber plug, and then glue is applied to seal it, completing the sealing of the optical cavity cone assembly and the connecting cavity. Then, the lower housing and the charging adapter plate are installed, and then the upgrade button cover is installed to complete the assembly of the entire machine. The rubber plug is designed with a side seam, and the wiring harness is threaded through its side seam and fixed to the wire outlet hole. Then, hot melt glue is applied to the gap between the wiring harness and the rubber plug to achieve sealing of the wire outlet hole.

[0058] The near-infrared spectrometer is assembled, and the specific steps are as follows:

[0059] 1. Subassembly installation:

[0060] 1.1. Install the optical cavity cone assembly:

[0061] First, press the deep groove ball bearing 8 into the optical cavity cone 7, then put the shaft on the optical cavity cone mouth with a wire retaining ring 9, then stick the large gear 10 with the washer 11, press the deep groove ball bearing into it, and then fix it with the clamping piece 12 and screws.

[0062] 1.2. Install the motor assembly:

[0063] First, install the motor 13 on the bracket 14 according to the specified position and fix it with screws. Then press the pinion 15 into the motor shaft and fix it with screws.

[0064] 1.3. Install the decorative panel assembly:

[0065] First, fix the light guide column 16 on the decorative panel 17 by hot riveting, then fix the indicator light board 18 by snapping, then put the button cap 19 and button 20 into the corresponding holes of the decorative panel in turn, then fix the switch board 21 by snapping, and finally stick the Bluetooth antenna 22 to the designated position.

[0066] 1.4. Install the sealing cover assembly:

[0067] First, the first vibration damping block 23 and the second vibration damping block 24 are sequentially pasted to the designated positions of the sealing cover 25 , and then sealant is evenly applied in the opening groove of the sealing cover, and the sealing ring 26 is pasted.

[0068] 1.5. Install the main control board components:

[0069] First, rotate the lens 27 into the lens sleeve 28, and apply sealant to the inner wall of the sensor assembly side of the sleeve, a total of six sets, then put the six sets of lens assemblies onto the sensor of the main control board 29 and cure them.

[0070] 1.6. Install the battery compartment assembly:

[0071] The third vibration damping block 30 and the fourth vibration damping block 31 are sequentially pasted to designated positions on the battery compartment 32 .

[0072] 2. Assemble the whole machine:

[0073] 2.1、Refer to the attached Figure 8-11 Align the positioning holes of the motor mounting bracket of motor assembly 2 with the positioning bosses of optical cavity cone assembly 1, insert the bracket, and secure it to the optical cavity cone with screws. Next, insert the sealing ring 26 into the groove at the tail end of the optical cavity cone assembly, align the positioning pins of the optical cavity bracket 33 with the positioning holes of the optical cavity cone assembly, and then install it to the optical cavity cone. Then, route the indicator light harness through the outlet hole, insert the upper housing 34 from the top of the whole machine, and secure it with screws. Then, insert the decorative panel assembly 3 from the top, and secure it with screws from the bottom of the whole machine to connect the decorative panel assembly to the optical cavity bracket. Plug in the indicator light board and switch harness. Route the indicator light switch harness and Bluetooth harness through the outlet hole of the optical cavity bracket. Secure them at the outlet hole with the first rubber plug 35 and the second rubber plug 36, respectively, and seal them with hot melt adhesive.

[0074] 2.2, refer to the attached Figure 12-13, install the halogen tungsten lamp board 37 in sequence, plug in the lamp board wiring harness, align the positioning hole of the main control board assembly 5 with the positioning pin of the optical cavity cone, and put it in, and fix it with the fixed stud 38, then place the battery compartment assembly 6 in the required direction, align the screw hole with the stud, and put it on the stud, and fix it with screws, put the battery 39 into the battery compartment, plug in the battery and other wiring harnesses, plug the motor controller 40 to the main control board of the main control board assembly 5, align the positioning pin of the sealing cover assembly 4 with the positioning hole of the optical cavity bracket, and install it on the optical cavity bracket, the motor wiring harness and the charging adapter board wiring harness pass through the outlet hole of the sealing cover, and use the third rubber plug 41 to fix it at the outlet hole, then apply hot melt glue to seal it, and plug in the motor wiring harness.

[0075] 2.3, refer to the attached Figure 14-16 Insert the lower housing 42 from the bottom of the device and secure the screws. Then, align the positioning pins of the light guide 43 with the charging adapter 44, press and install it onto the charging adapter. Connect the wiring harness on the charging adapter. From the groove in the sealing cover, align the light guide and the Type-C connector on the charging adapter with the exit hole of the lower housing, push it in and secure the screws. Next, align the reset hole of the upgrade button cover 45 with the reset button on the charging adapter, insert it into the bottom of the device, secure the screws, and then affix the foot pads 46 and nameplate 47 to the corresponding recesses in the bottom cover.

[0076] 2.4. Clean the cavity of the optical cavity cone and stick the optical cavity lens 48 to the upper rotating workbench of the large gear so that the optical cavity lens 48 rotates with the large gear.

[0077] The utility model is portable, can automatically rotate for detection, is low-cost, and easy to operate. It can be applied to non-laboratory environments such as production lines and outdoors. It has a certain sealing level and can be used in some high-humidity environments.

[0078] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A portable near-infrared spectrometer capable of automatic rotation detection, characterized in that: The optical cavity lens comprises an optical cavity cone assembly, an optical cavity bracket and a main control board assembly which are sequentially arranged in the housing, and a motor assembly which is arranged on the side of the optical cavity cone assembly and meshes with a large gear of the optical cavity cone assembly. The optical cavity lens is connected to one end of the large gear of the optical cavity cone assembly. By driving the motor of the motor assembly to rotate, the detection dish with a sample on the optical cavity lens is driven to rotate along with the large gear. The light is irradiated on the sample in the detection dish and reflected to the sensor of the main control board assembly to complete the detection.

2. A portable near-infrared spectrometer capable of automatic rotation detection according to claim 1, characterized in that: The optical cavity cone assembly and the optical cavity bracket are connected through a positioning pin and a positioning hole, and the motor of the driving motor assembly is arranged to pass through the optical cavity bracket at one end away from the optical cavity cone assembly.

3. The portable near-infrared spectrometer capable of automatic rotation detection according to claim 1, characterized in that: The near-infrared spectrometer is further provided with a decorative panel assembly, which is arranged in the housing between the optical cavity lens and the optical cavity cone assembly.

4. A portable near-infrared spectrometer capable of automatic rotation detection according to claim 3, characterized in that: The wiring harness of the decorative panel assembly is arranged through the optical cavity bracket and is sealed by a rubber plug.

5. The portable near-infrared spectrometer capable of automatic rotation detection according to claim 3, characterized in that: A plurality of halogen tungsten lamp boards for providing light are arranged on the side of the main control board component facing the optical cavity cone component.

6. The portable near-infrared spectrometer capable of automatic rotation detection according to claim 1, characterized in that: The main control board assembly is connected to the optical cavity cone assembly via studs.

7. The portable near-infrared spectrometer capable of automatic rotation detection according to claim 1, characterized in that: A battery compartment assembly and a sealing cover assembly are provided on the side of the main control board assembly away from the optical cavity cone assembly. The battery compartment assembly is provided on the main control board assembly, and the sealing cover assembly is connected to the positioning hole of the optical cavity bracket through a positioning pin.

8. The portable near-infrared spectrometer capable of automatic rotation detection according to claim 1, characterized in that: The shell comprises an upper shell and a lower shell, the upper shell and the lower shell are embedded with each other, and an upgrade button cover is provided at the end of the lower shell.

9. The portable near-infrared spectrometer capable of automatic rotation detection according to claim 1, characterized in that: The main control board assembly is provided with a motor controller for controlling the motor.

10. A portable near-infrared spectrometer capable of automatic rotation detection according to any one of claims 1 to 9, characterized in that: The motor assembly includes a motor, a bracket and a pinion, wherein the rotating shaft of the motor passes through the bracket and is connected to the pinion, so that the motor assembly is set on the optical cavity cone assembly through the bracket, and the pinion of the motor assembly is meshed with the large gear; The optical cavity cone assembly includes a deep groove ball bearing, an optical cavity cone and a large gear. The deep groove ball bearing is sleeved on one end of the optical cavity cone, and the large gear is fixedly arranged outside the deep groove ball bearing so that the large gear can rotate on the optical cavity cone. The main control board assembly includes a main control board and a plurality of lens assemblies arranged on one side of the main control board, and the lens assemblies are arranged facing the optical cavity cone assembly.

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