Laser cleaning device

Abstract

According to the laser cleaning device, a light passing shaft can rotate relative to a first shell, a second shell can rotate relative to the first shell, and an included angle is formed between a first axis and a second axis, so that the first shell can be adjusted by rotating around the second axis, and the light passing shaft can be adjusted by rotating around the first axis; therefore, the angle position of the window can be flexibly adjusted according to actual requirements, so that the laser emitted outwards from the window can be incident to the to-be-cleaned parts at different positions. According to the laser cleaning device, laser cleaning operation can be conveniently carried out on to-be-cleaned parts at different positions, all-directional cleaning of carbon deposition on the surface of a cleaned object can be achieved, high cleaning efficiency is achieved, and uniformity and thoroughness of cleaning are guaranteed. In addition, due to the fact that more types of laser cleaning devices do not need to be arranged, the device cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of laser cleaning technology, and in particular to a laser cleaning apparatus. Background Technology

[0002] In recent years, laser cleaning technology has gradually gained attention due to its advantages such as non-contact operation, high efficiency, and environmental friendliness. Laser cleaning utilizes a high-energy laser beam to irradiate the surface of the object being cleaned, causing surface contaminants to evaporate or peel off instantly, thus achieving the purpose of cleaning. Objects to be cleaned include, but are not limited to, engines. Taking an engine as an example, this technology, when applied to cleaning the engine combustion chamber, can effectively avoid the shortcomings of traditional physical or chemical cleaning methods. It effectively removes accumulated oil stains, carbon deposits, and other impurities inside the combustion chamber, achieving a fast and non-destructive cleaning effect without disassembling the engine and causing no secondary damage.

[0003] However, an engine typically has multiple areas that need cleaning, not just one. These areas will vary in shape and size. Therefore, to facilitate cleaning of these various engine parts, multiple models of laser cleaning devices are usually required. During cleaning operations, the appropriate model is selected based on the specific needs. However, increasing the number of laser cleaning device models leads to higher cleaning costs. Utility Model Content

[0004] Therefore, it is necessary to overcome the shortcomings of the existing technology and provide a laser cleaning device that can easily perform laser cleaning operations on multiple different locations.

[0005] A laser cleaning apparatus, the laser cleaning apparatus comprising:

[0006] A first housing, wherein a first reflector is disposed inside the first housing;

[0007] A light-transmitting axis, the proximal end of which is rotatably connected to the first housing, and the distal end of which is provided with a second reflector and a window;

[0008] A second housing, rotatably connected to the first housing, contains a lens assembly. The axis of rotation of the optical transmission axis relative to the first housing is designated as a first axis, and the axis of rotation of the second housing relative to the first housing is designated as a second axis. The first axis and the second axis are set at an angle.

[0009] A laser emitting assembly is connected to the second housing. The laser emitted by the laser emitting assembly passes sequentially through the lens assembly, the first reflector, and the second reflector before being emitted outward from the window.

[0010] In one embodiment, the optical transmission axis includes multiple shaft segments coaxially connected in sequence along the laser transmission direction, and any two adjacent shaft segments are nested together and can move axially.

[0011] In one embodiment, each of the two adjacent shaft segments is provided with a first limiting member at one end that is close to each other in the axial direction. The two first limiting members abut and limit each other in the axial direction, and the first limiting member on the shaft segment closer to the far end of the light transmission axis is closer to the near end of the light transmission axis than the other first limiting member.

[0012] In one embodiment, the two first limiting members are provided with teeth on their end faces facing each other, and when the two adjacent shaft segments are stretched to their limit positions along the axial direction, the teeth of the two first limiting members mesh with each other.

[0013] In one embodiment, the laser cleaning apparatus further includes a connecting pipe and an operating ring. The connecting pipe is rotatably connected to the first housing, and the proximal end of the optical shaft is detachably connected to the connecting pipe. The operating ring is sleeved on the connecting pipe, and the operating ring is provided with a first fastener for clamping or loosening the connecting pipe.

[0014] In one embodiment, a first thread is provided on the proximal outer wall of the optical shaft, and a second thread is provided on the inner wall of the connecting tube. The second thread is adapted to the first thread, and an opening slit extending in the axial direction is formed on the tube wall of the connecting tube.

[0015] In one embodiment, the laser cleaning device further includes a locking sleeve; the first housing is provided with a first mating joint, the mating tube passes through the first mating joint and extends into the first housing, the locking sleeve is detachably fitted and fixed on the first mating joint, and the locking sleeve and the mating tube abut against each other along the axial direction.

[0016] In one embodiment, the first housing is provided with a mounting part and a clamping cover detachably disposed on the mounting part; the mounting part is provided with a light-transmitting hole, the first reflector is mounted on the mounting part, the reflective surface of the first reflector is positioned corresponding to the position of the light-transmitting hole, and the clamping cover clamps the first reflector.

[0017] In one embodiment, the first housing is provided with a second docking joint, the second housing is provided with a third docking joint, the laser cleaning device further includes a retaining ring, the second docking joint is rotatably inserted into the third docking joint and extends into the interior of the second housing, and the retaining ring is disposed on the second docking joint and abuts against and limits the second housing.

[0018] In one embodiment, the laser cleaning apparatus further includes an air inlet connector mounted on the second housing, the air inlet connector being used to input cold air into the interior of the second housing; and / or, the lens assembly includes a first concave lens, a convex lens, a second concave lens, and a protective lens arranged sequentially along the laser incident direction of the laser emitting assembly.

[0019] The aforementioned laser cleaning device, because its optical axis can rotate relative to the first housing and the second housing can rotate relative to the first housing, with the first and second axes forming an angle, allows for adjustment of the first housing around the second axis and the optical axis around the first axis. This enables flexible adjustment of the window angle according to actual needs, ensuring that the laser emitted from the window can reach various locations to be cleaned. This facilitates laser cleaning of different locations, achieving comprehensive cleaning of carbon deposits on the surface of the object, resulting in high cleaning efficiency and ensuring uniformity and thoroughness. Furthermore, since it eliminates the need for additional laser cleaning devices, the overall cost of the device is reduced. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of a laser cleaning apparatus according to an embodiment of this application.

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A.

[0022] Figure 3 for Figure 1 Enlarged structural diagram at point B.

[0023] Figure 4 for Figure 1 The diagram shows the exploded structure of the laser cleaning device.

[0024] Figure 5 for Figure 1 An exploded view of part of the structure of the laser cleaning device shown.

[0025] 10. First housing; 11. First reflector; 12. First mating joint; 13. Mounting part; 131. Light-transmitting hole; 14. Pressing cover; 15. Second fastener; 16. Second mating joint; 17. Snap ring; 20. Light-transmitting shaft; 21. Second reflector; 22. Window; 23. Shaft segment; 231. First shaft segment; 232. Second shaft segment; 233. Third shaft segment; 24. First limiting member; 25. Second limiting member; 30. Second housing 31. Body; 32. Interface; 33. Third mating joint; 40. Split shell; 41. Lens assembly; 42. First concave lens; 43. Convex lens; 44. Second concave lens; 50. Connecting pipe; 51. Opening gap; 60. Operating ring; 61. First fastener; 70. Locking sleeve; 80. Air inlet joint; 81. Air inlet pipe; 82. Sealing ring; 91. First partition ring; 92. Second partition ring; 93. Third partition ring. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be noted that the proximal end refers to the end of the instrument or component that is closer to the operator, and the distal end refers to the end of the instrument or component that is farther away from the operator; the axial direction refers to the direction parallel to the line connecting the center of the distal end and the proximal end of the instrument or component, the radial direction refers to the direction perpendicular to the axial direction, and the circumferential direction refers to the direction around the axial direction.

[0028] See Figures 1 to 3 This application provides an embodiment of a laser cleaning apparatus, comprising: a first housing 10, an optical transmission axis 20, a second housing 30, and a laser emitting assembly. The first housing 10 contains a first reflecting mirror 11. The proximal end of the optical transmission axis 20 is rotatably connected to the first housing 10, and the distal end of the optical transmission axis 20 contains a second reflecting mirror 21 and a window 22. The second housing 30 is rotatably connected to the first housing 10, and the second housing 30 contains a lens assembly 40.

[0029] The axis of rotation of the light-transmitting shaft 20 relative to the first housing 10 is designated as the first axis, and the axis of rotation of the second housing 30 relative to the first housing 10 is designated as the second axis. The first axis and the second axis are set at an angle. The first axis is as follows: Figure 2 As shown by the dashed line P in the diagram, the second axis is as follows: Figure 2The dashed line Z is shown in the diagram. The angle between the first axis and the second axis includes, but is not limited to, 30°, 45°, 60°, 75°, 90°, 120°, 135°, or 150°, etc.

[0030] The laser emitting component is not shown in the figure. The laser emitting component is specifically connected to the second housing 30. The laser light emitted by the laser emitting component passes through the lens assembly 40, the first reflector 11 and the second reflector 21 in sequence and is emitted outward from the window 22.

[0031] The aforementioned laser cleaning device, because the optical axis 20 can rotate relative to the first housing 10 and the second housing 30 can rotate relative to the first housing 10, and the first axis and the second axis are set at an angle, allows for adjustment of the first housing 10 around the second axis and the optical axis 20 around the first axis. This enables flexible adjustment of the angle of the window 22 according to actual needs, ensuring that the laser emitted from the window 22 can reach the areas to be cleaned at various locations. This facilitates laser cleaning of areas at different locations, achieving comprehensive cleaning of carbon deposits on the surface of the object, resulting in high cleaning efficiency and ensuring uniformity and thoroughness. Furthermore, since there is no need to configure multiple laser cleaning devices, the device cost is reduced.

[0032] The second housing 30 contains a lens assembly 40 and is connected to the laser emitting assembly. Thus, the overall size of the second housing 30 and the lens assembly 40 is larger than that of the first housing 10, so that the position can be adjusted without rotating around the second axis during actual use.

[0033] In some embodiments, the connection between the proximal end of the optical transmission shaft 20 and the first housing 10 includes, but is not limited to, threaded connection, snap-fit ​​connection, interference fit connection, or detachable connection using a fixing pin or rivet. Specifically, in this embodiment, the connection between the proximal end of the optical transmission shaft 20 and the first housing 10 is preferably a threaded connection. This not only facilitates disassembly and assembly, but also ensures that the optical transmission shaft 20 and the laser beam of the laser emitting component have high coaxiality after assembly, thereby improving the accuracy and stability of laser transmission and resulting in a better cleaning effect.

[0034] In some embodiments, the first reflector 11 includes, but is not limited to, a reflective lens.

[0035] In some embodiments, the second reflector 21 includes, but is not limited to, a reflective structure obtained by beveling, for example, a cylinder. The beveled surface of the second reflector 21 is set at an angle to the axis of the cylinder, and the beveled surface is also the reflective surface used to reflect laser light. The cylinder, for example, is adapted to the shape of the light-transmitting hole 131 of the light-transmitting axis 20, enabling stable mounting inside the light-transmitting axis 20. Furthermore, the second reflector 21 is not limited to being mounted on the light-transmitting axis 20 by bonding, snapping, or using various fasteners such as pins, rivets, and screws. The specific mounting can be flexibly adjusted and set according to actual needs, and is not limited here.

[0036] Optionally, the shape of the window 22 may include, but is not limited to, various regular and irregular shapes such as square, U-shaped, circular, and elliptical, as long as it can avoid the laser light reflected by the second reflector 21. The specific shape can be flexibly adjusted and set according to actual needs.

[0037] Please see Figures 3 to 5 For example, the optical transmission shaft 20 includes multiple shaft segments 23 coaxially connected sequentially along the laser transmission direction. Any two adjacent shaft segments 23 are nested together and can extend and retract axially. Thus, the optical transmission shaft 20 is an axially extendable structure. During laser cleaning operations, the length of the optical transmission shaft 20 can be flexibly adjusted according to actual needs, thereby adjusting the depth to which the distal end of the optical transmission shaft 20 extends into the engine interior. This allows the laser emitted from the window 22 to reach various locations to be cleaned, enabling cleaning of multiple locations at different depths. Furthermore, for the same area to be cleaned, the optical transmission shaft 20 can also be axially extended and adjusted, achieving better laser cleaning results.

[0038] The two adjacent shaft segments 23 are in a nested fit relationship, and there is friction between the two shaft segments 23. In this way, when the shaft segment 23 is stretched or compressed to adjust its position, it remains relatively fixed under the action of friction, so as to ensure that the far end position of the light transmission shaft 20 is fixed.

[0039] As a specific example, along the direction from the far end to the near end of the optical axis 20, the outer diameter of each shaft segment 23 increases sequentially, with the previous shaft segment 23 nested inside the next shaft segment 23.

[0040] The number of shaft segments 23 may include, but is not limited to, 2, 3, 4, 5 or more. The specific number can be flexibly adjusted and set according to actual needs, and is not limited here.

[0041] For example, each of two adjacent shaft segments 23 has a first limiting member 24 at one end that is close to each other along the axial direction. The two first limiting members 24 abut against each other along the axial direction and limit each other. The first limiting member 24 on the shaft segment 23 closer to the far end of the light-transmitting shaft 20 is closer to the near end of the light-transmitting shaft 20 than the other first limiting member 24. In this way, when the light-transmitting shaft 20 is adjusting its own length, when the two adjacent shaft segments 23 are stretched to their limit positions along the axial direction, the two first limiting members 24 abut against each other along the axial direction and limit each other, thereby preventing the two shaft segments 23 from separating from each other.

[0042] For example, both first limiting members 24 have teeth on their end faces facing each other. When two adjacent shaft segments 23 are stretched axially to their limit positions, the teeth of the two first limiting members 24 mesh with each other. Thus, when the light-transmitting shaft 20 is stretched to its maximum length, the first limiting members 24 on the ends of any two adjacent shaft segments 23 that are close to each other mesh with each other and can rotate synchronously. Furthermore, when the light-transmitting shaft 20 is stretched to its maximum length, when a force is applied to the proximal end of the light-transmitting shaft 20 to adjust the angle, the window 22 at the distal end of the light-transmitting shaft 20 can be synchronously adjusted in angle accordingly.

[0043] Specifically, the first limiting member 24 includes, but is not limited to, being configured as an annular sleeve, such as an annular toothed ring.

[0044] To facilitate laser cleaning operations within the confined spaces of the engine, the outer diameter of shaft segment 23 is, for example, 8 mm to 12 mm, and the wall thickness is, for example, 0.2 mm to 0.8 mm. Correspondingly, when the first limiting member 24 is configured as an annular sleeve, the annular sleeve can be easily and securely mounted on shaft segment 23, meaning the first limiting member 24 can be easily machined onto the optical shaft 20. Specifically, the first limiting member 24 is, but not limited to, being fixedly mounted on the optical shaft 20 by various methods such as welding or bonding.

[0045] For two adjacent shaft segments 23, the shaft segment 23 closer to the far end of the light transmission axis 20 is nested inside the other shaft segment 23. In addition, a second limiting member 25 is provided at the proximal end of the shaft segment 23 furthest from the second reflector 21. The second limiting member 25 includes, but is not limited to, a retaining ring, and the second limiting member 25 limits the other shaft segment 23 adjacent to it.

[0046] In one specific embodiment, when there are three shaft segments 23, the three shaft segments 23 are respectively a first shaft segment 23123, a second shaft segment 23223, and a third shaft segment 23323, which are sequentially fitted from the distal end to the proximal end. The second reflector 21 and the window 22 are both disposed on the distal end of the first shaft segment 23123, and a first limiting member 24 is disposed on the proximal outer wall of the first shaft segment 23123. A first limiting member 24 is disposed on the distal inner wall of the second shaft segment 23223, and a first limiting member 24 is disposed on the proximal outer wall of the second shaft segment 23223. A first limiting member 24 is disposed on the distal inner wall of the third shaft segment 23323, and a second limiting member 25 is disposed on the proximal inner wall of the third shaft segment 23323. The first limiting member 24 on the distal inner wall of the second shaft segment 23223 abuts against and limits the first limiting member 24 on the proximal outer wall of the first shaft segment 23123, and the first limiting member 24 on the proximal inner wall of the second shaft segment 23223 abuts against and limits the first limiting member 24 on the distal inner wall of the third shaft segment 23323.

[0047] For example, the laser cleaning apparatus also includes a connecting tube 50 and an operating ring 60. The connecting tube 50 is rotatably connected to the first housing 10, and the proximal end of the optical transmission shaft 20 is detachably connected to the connecting tube 50. The operating ring 60 is fitted over the connecting tube 50, and a first fastener 61 is provided on the operating ring 60 for clamping or loosening the connecting tube 50. This arrangement facilitates the removal and replacement of the optical transmission shaft 20 because the optical transmission shaft 20 is detachably connected to the connecting tube 50. Furthermore, when the first fastener 61 clamps the connecting tube 50, the operating ring 60 can rotate the connecting tube 50, which in turn rotates the optical transmission shaft 20, thereby adjusting the angle of the window 22 so that the laser emitted from the window 22 can reach the areas to be cleaned at different locations.

[0048] Optionally, the first fastener 61 includes, but is not limited to, bolts, screws, or threaded rods, etc. The wall of the operating ring 60 is provided with a mounting hole adapted to the first fastener 61, and the first fastener 61 is adjustablely positioned in the mounting hole. When the position of the first fastener 61 is adjusted, the clamping force on the connecting pipe 50 can be adjusted. When the first fastener 61 clamps the connecting pipe 50, the connecting pipe 50 can be rotated through the operating ring 60.

[0049] Optionally, the outer wall of the operating ring 60 is provided with anti-slip texture, which facilitates the rotation of the operating ring 60 to adjust its angle position.

[0050] For example, the outer wall of the proximal end of the optical shaft 20 is provided with a first thread, and the inner wall of the connecting tube 50 is provided with a second thread, which is adapted to the first thread. An axially extending opening slit 51 is formed on the wall of the connecting tube 50. Thus, because the wall of the connecting tube 50 has an axially extending opening slit 51, the proximal end of the optical shaft 20 can be easily and quickly inserted into the interior of the connecting tube 50, and the optical shaft 20 and the connecting tube 50 are fixedly assembled together through the interaction of the first and second threads. Furthermore, when the first fastener 61 tightens the connecting tube 50, it facilitates a secure assembly of the optical shaft 20 and the connecting tube 50; when the first fastener 61 loosens the connecting tube 50, it facilitates the removal of the optical shaft 20 from the connecting tube 50.

[0051] Optionally, the opening slit 51 is not limited to one; for example, it can be multiple, with multiple opening slits 51 arranged at equal intervals around the circumferential direction of the connector 50.

[0052] For example, the laser cleaning apparatus also includes a locking sleeve 70. The first housing 10 is provided with a first mating joint 12, and the connecting pipe 50 passes through the first mating joint 12 and extends into the first housing 10. The locking sleeve 70 is detachably fitted and fixed to the first mating joint 12, and the locking sleeve 70 and the connecting pipe 50 are axially limited and abutted.

[0053] Specifically, the outer wall of the first mating joint 12 is provided with threads, and the locking sleeve 70 is provided with threads that are compatible with the threads on the outer wall of the first mating joint 12. The locking sleeve 70 is detachably and fixedly connected to the first mating joint 12 by means of threaded engagement, which facilitates disassembly and assembly.

[0054] For example, the first housing 10 is provided with a mounting portion 13 and a clamping cover 14 detachably disposed on the mounting portion 13. The mounting portion 13 is provided with a light-transmitting hole 131. A first reflector 11 is mounted on the mounting portion 13, and the reflective surface of the first reflector 11 is positioned corresponding to the light-transmitting hole 131. The clamping cover 14 clamps the first reflector 11. In this way, it is easy to fix the first reflector 11 to the first housing 10. In addition, the size of the first housing 10 can be minimized as much as possible. Furthermore, the laser from the laser emitting assembly, after passing through the lens assembly 40, can pass through the light-transmitting hole 131 and enter the first reflector 11. The laser reflected by the first reflector 11 passes through the light-transmitting hole 131 and enters the second reflector 21.

[0055] Optionally, the laser cleaning apparatus further includes a second fastener 15. The clamping cover 14 is fixedly mounted on the mounting portion 13 by the second fastener 15. The number of second fasteners 15 includes, but is not limited to, one or more. The second fastener 15 is, for example, a screw, bolt, pin, or rivet.

[0056] For example, the first housing 10 is provided with a second mating joint 16, and the second housing 30 is provided with a third mating joint 32. The laser cleaning device also includes a retaining ring 17. The second mating joint 16 is rotatably inserted into the third mating joint 32 and extends into the interior of the second housing 30. The retaining ring 17 is disposed on the second mating joint 16 and abuts against and limits the second housing 30. In this way, the rotatable connection of the second mating joint 16 and the third mating joint 32 realizes the rotatable connection between the first housing 10 and the second housing 30, and the rotation angle of the first housing 10 can be flexibly adjusted according to needs. In addition, the retaining ring 17 can play a limiting role, preventing the first housing 10 and the second housing 30 from separating from each other, so that the first housing 10 and the second housing 30 can be combined together.

[0057] For example, the laser cleaning device also includes an air inlet connector 80, which is mounted on the second housing 30. The air inlet connector 80 is used to connect with a cold air blowing device to introduce cold air into the interior of the second housing 30. After the air inlet connector 80 is connected to the air outlet of the cold air blowing device, the cold air is blown into the interior of the housing through the cold air blowing device. The cold air is blown from the second housing 30 into the first housing 10 and flows into the interior of the optical axis 20, achieving effective heat dissipation of the laser beam. It has high heat dissipation efficiency and plays a role in cooling down.

[0058] For example, the second housing 30 is provided with an interface 31. The air intake connector 80 is fixedly mounted on the interface 31. Optionally, the air intake connector 80 is provided with threads, for example, and the interface 31 is a threaded interface 31, and the air intake connector 80 is fixed to the interface 31 by means of threads.

[0059] The air inlet connector 80 is equipped with an air inlet pipe 81, which is configured as a curved pipe. The air inlet pipe 81 is located on the side of the lens assembly 40 facing the first reflecting mirror 11. The outlet of the air inlet pipe 81 faces the lens assembly 40. Thus, the cold air discharged from the air inlet pipe 81 first acts on the lens assembly 40 to dissipate heat from it. After being blocked by the lens assembly 40, the air flows in the opposite direction into the interior of the first housing 10 and into the interior of the optical transmission axis 20, before flowing outward from the window 22.

[0060] To ensure airtightness, a sealing ring 82 is provided between the air inlet connector 80 and the second housing 30. The sealing ring 82 is arranged circumferentially around the interface 31 to prevent cold air that has blown into the second housing 30 from flowing out of the second housing 30 through the interface 31.

[0061] For example, the lens assembly 40 includes a first concave lens 41, a convex lens 42, a second concave lens 43, and a protective lens 44 arranged sequentially along the laser incident direction of the laser emitting assembly.

[0062] For example, the laser cleaning device further includes a first partition ring 91, a second partition ring 92, and a third partition ring 93. The first partition ring 91, the second partition ring 92, and the third partition ring 93 are all disposed inside the second housing 30 and arranged sequentially along the laser incident direction of the laser emitting assembly. Specifically, the first partition ring 91 is arranged between the first concave lens 41 and the convex lens 42 to achieve relative fixation between the two lenses. The second partition ring 92 is arranged between the convex lens 42 and the second concave lens 43 to achieve relative fixation between them. The third partition ring 93 is arranged between the second concave lens 43 and the protective lens to achieve relative fixation between the second concave lens 43 and the protective lens. In this way, the first concave lens 41, the convex lens 42, the second concave lens 43, and the protective lens 44 can be stably installed inside the second housing 30, effectively preventing movement along the laser incident direction.

[0063] Optionally, in order to facilitate the installation of the lens assembly 40, the first separator ring 91, the second separator ring 92 and the third separator ring 93 inside the second housing 30, the second housing 30 includes two detachably connected separate housings 33.

[0064] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0065] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0067] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A laser cleaning device, characterized in that, The laser cleaning device includes: A first housing, wherein a first reflector is disposed inside the first housing; A light-transmitting axis, the proximal end of which is rotatably connected to the first housing, and the distal end of which is provided with a second reflector and a window; A second housing, rotatably connected to the first housing, contains a lens assembly. The axis of rotation of the optical transmission axis relative to the first housing is designated as a first axis, and the axis of rotation of the second housing relative to the first housing is designated as a second axis. The first axis and the second axis are set at an angle. A laser emitting assembly is connected to the second housing. The laser emitted by the laser emitting assembly passes sequentially through the lens assembly, the first reflector, and the second reflector before being emitted outward from the window.

2. The laser cleaning apparatus according to claim 1, characterized in that, The optical transmission axis includes multiple shaft segments that are coaxially connected sequentially along the laser transmission direction. Any two adjacent shaft segments are nested together and can extend and retract along the axial direction.

3. The laser cleaning apparatus according to claim 2, characterized in that, Each of the two adjacent shaft segments is provided with a first limiting member at one end that is close to each other along the axial direction. The two first limiting members abut and limit each other along the axial direction, and the first limiting member on the shaft segment closer to the far end of the light transmission axis is closer to the near end of the light transmission axis than the other first limiting member.

4. The laser cleaning apparatus according to claim 3, characterized in that, Both of the first limiting members have teeth on their end faces facing each other. When two adjacent shaft segments are stretched to their limit positions along the axial direction, the teeth of the two first limiting members mesh with each other.

5. The laser cleaning apparatus according to claim 1, characterized in that, The laser cleaning device further includes a connecting pipe and an operating ring. The connecting pipe is rotatably connected to the first housing, and the proximal end of the optical shaft is detachably connected to the connecting pipe. The operating ring is sleeved on the connecting pipe, and the operating ring is provided with a first fastener, which is used to clamp or loosen the connecting pipe.

6. The laser cleaning apparatus according to claim 5, characterized in that, The outer wall near the end of the light-transmitting shaft is provided with a first thread, and the inner wall of the connecting pipe is provided with a second thread. The second thread is adapted to the first thread, and an opening slit extending in the axial direction is formed on the wall of the connecting pipe.

7. The laser cleaning apparatus according to claim 5, characterized in that, The laser cleaning device further includes a locking sleeve; the first housing is provided with a first docking joint, the connecting pipe passes through the first docking joint and extends into the first housing, the locking sleeve is detachably fitted and fixed on the first docking joint, and the locking sleeve and the connecting pipe abut against each other along the axial direction.

8. The laser cleaning apparatus according to claim 1, characterized in that, The first housing has a mounting part and a clamping cover detachably disposed on the mounting part; the mounting part has a light-transmitting hole, the first reflector is mounted on the mounting part, the reflective surface of the first reflector is positioned corresponding to the position of the light-transmitting hole, and the clamping cover clamps the first reflector.

9. The laser cleaning apparatus according to claim 1, characterized in that, The first housing is provided with a second docking joint, the second housing is provided with a third docking joint, and the laser cleaning device further includes a retaining ring. The second docking joint is rotatably inserted into the third docking joint and extends into the interior of the second housing. The retaining ring is disposed on the second docking joint and abuts against and limits the second housing.

10. The laser cleaning apparatus according to any one of claims 1 to 9, characterized in that, The laser cleaning device further includes an air inlet connector, which is installed on the second housing and is used to input cold air into the interior of the second housing; and / or, the lens assembly includes a first concave lens, a convex lens, a second concave lens, and a protective lens arranged sequentially along the laser incident direction of the laser emitting assembly.

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