Protective device of scrap cutter laser range finder with oil stain cleaning function

Abstract

The invention belongs to the technical field of laser range finder protection, and discloses a scrap cutter laser range finder protection device with an oil stain cleaning function, the scrap cutter laser range finder protection device comprises a support positioning base, the top of the support positioning base is fixedly connected with a protection shell, and the scrap cutter laser range finder protection device also comprises an oil stain scraping plate, a transmission lead screw and other structures, a transmission lead screw is periodically driven by a servo motor to rotate, so that the transmission lead screw drives an oil stain scraping plate to slide back and forth along a main body supporting frame, and the oil stain scraping plate passes through the whole protection shell; the oil stain scraping plate is used for scraping oil stains on the top surface of the protective shell and the surface provided with the high lens, so that the protective shell and the high lens are kept clean and tidy during oil stain cleaning, and when the range finder body works, loss caused by errors of the high lens due to the oil stains is avoided.

Description

Technical Field

[0001] This invention belongs to the field of laser rangefinder protection technology, specifically a protective device for a laser rangefinder with an oil stain cleaning function. Background Technology

[0002] The edge-cutting laser rangefinder is a high-end specialized device that integrates laser ranging technology with edge-cutting functionality. It is widely used in industrial production for high-precision measurement and automated cutting of sheet metal edges. This device employs pulsed or phase-based laser ranging technology, emitting a high-precision laser beam and accurately receiving the reflected signal. Combined with the constant parameter of the speed of light, it quickly calculates the target distance. Phase-based technology, by detecting the phase difference between the emitted and reflected waves, improves measurement accuracy to the millimeter level, making it particularly suitable for high-precision cutting needs in complex indoor environments. The device integrates a high-speed servo motor and a precision cutting tool system, enabling dynamic adjustment of the cutting position based on real-time ranging data. This ensures smooth, burr-free edge cutting, significantly improving product quality and production efficiency.

[0003] Existing laser rangefinders for edge trimmers often face inaccurate ranging problems in practical production applications. The root cause lies in the harsh industrial environment, especially the severe oil pollution. During production, splashed lubricating oil and cutting fluid easily adhere to the surface of the laser emission window of the rangefinder, forming an oil film or oil accumulation layer. This directly hinders the accurate transmission and reception of laser signals, leading to attenuation of reflected signal intensity or signal distortion, which in turn causes abnormalities such as measurement data jumps and excessive deviations. Such inaccuracies can trigger malfunctions in the edge trimmer control system, causing shearing position deviations and uneven edges, seriously affecting product qualification rates and production cycle time. In addition, existing rangefinders generally lack shock-resistant protection designs. Under conditions such as equipment vibration, material collision, or accidental drops, their precision optical components and internal circuits are easily damaged, leading to increased equipment downtime for maintenance. This not only increases the cost of spare parts replacement and manual maintenance but also causes efficiency losses for the entire production line due to sudden production stoppages. Therefore, a protective device for laser rangefinders for edge trimmers with oil cleaning function is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a protective device for a laser rangefinder with an oil stain cleaning function.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective device for a laser rangefinder with an oil stain cleaning function, comprising a support and positioning base, wherein a protective shell is fixedly connected to the top of the support and positioning base, and further comprising:

[0006] A cleaning component, mounted on top of the protective housing, is used to clean oil stains from the surface of the protective housing.

[0007] A fixing component, installed inside the protective housing, is used to secure the cleaning component.

[0008] The cleaning component includes a main support frame placed on top of the protective housing, anti-splash baffles fixedly connected to the top of both sides of the main support frame, and an oil stain scraper installed inside the main support frame;

[0009] The fixing assembly includes two sets of fixing buckles that are movably connected to the protective housing and a pair of positioning blocks that are fixedly connected to the top of the protective housing.

[0010] Preferably, a servo motor is fixedly connected inside one side of the main support frame, and a transmission screw is fixedly connected to the output end of the servo motor. The end of the splash guard away from the servo motor is slidably connected to the protective shell.

[0011] Preferably, the main support frame has a pair of first sockets at the bottom of the side near the transmission screw, and a pair of second sockets in the middle of the pair of first sockets. The second sockets are U-shaped with their openings facing downwards. The pair of first sockets and the pair of second sockets are symmetrically distributed around the center of the protective shell.

[0012] Preferably, the transmission screw is threadedly connected to the oil scraper, the oil scraper is slidably connected inside the main support frame and its two sides respectively abut against the anti-splash baffles located on both sides of the main support frame, and the oil scraper is L-shaped and abuts against the side and top surface of the protective shell facing the working area.

[0013] Preferably, the oil scraper has multiple oil cleaning jet holes linearly distributed on both sides facing the protective housing, the oil scraper has an air supply channel inside, the air supply channel is connected to the oil cleaning jet holes, and the oil scraper has two sleeve joints on its side.

[0014] Preferably, the sleeve joint is connected to an industrial compressor via an air pipe, the sleeve joint is connected to the air supply channel, and after the oil scraper comes into contact with the anti-splash baffle, it will cooperate with the anti-splash baffle to form a downward-opening cavity on the side of the protective shell.

[0015] Preferably, the fixing buckle is inserted into the second socket, and the protective shell and the main support frame are fixed by the fixing buckle and the hook inside the second socket. A pair of positioning blocks are inserted into the first socket at the corresponding positions. One end of a set of fixing buckles inside the protective shell is far away from each other and has a downward-facing inclined surface.

[0016] Preferably, one end of the fixing buckle located inside the protective housing abuts against the limiting compression block, a spring is fixedly connected to the middle of a pair of fixing buckles, the limiting compression block is slidably connected to the top of the inner wall of the protective housing, and an abutting inclined surface is provided at the bottom corner of the limiting compression block away from the transmission screw.

[0017] Preferably, a high-resolution lens is installed on one side of the protective housing, a rangefinder body is placed inside the protective housing, and rubber pads are filled on both sides of the rangefinder body inside the protective housing. A grid-like reinforcing rib is provided inside the protective housing, and vertical grooves for sliding connection with the splash guard are opened on both sides of the end of the protective housing away from the high-resolution lens.

[0018] Preferably, the rangefinder body abuts against the inclined surface, and the protective housing includes two parts: a housing and a detachable baffle. The housing part is fixedly connected to the support and positioning base, and the detachable baffle is located on the side of the protective housing away from the high lens, and has a slot in the middle for placing the circuit of the rangefinder body.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention facilitates the cleaning of oil stains from the protective housing and the high-lens lens by using a combination of an oil-scraping plate and a transmission screw. A servo motor periodically drives the transmission screw to rotate, causing the oil-scraping plate to slide back and forth along the main support frame. The oil-scraping plate passes over the entire protective housing, scraping away oil stains from the top surface of the protective housing and the side with the high-lens lens. This keeps the protective housing and high-lens lens clean and prevents errors and losses incurred by the rangefinder body during operation due to oil stains on the high-lens lens.

[0021] This invention facilitates the cleaning of the oil scraper itself by combining structures such as anti-splash baffles and oil cleaning jet holes. When the oil scraper scrapes off the oil and moves to a position where it abuts against the anti-splash baffle on one side to form a downward-opening cavity, the external industrial compressor can then be activated to discharge high-pressure airflow through the oil cleaning jet holes to clean the oil on the oil scraper, ensuring the cleanliness of the oil scraper itself and maximizing its cleaning effect on the protective housing and high-lens lens.

[0022] This invention facilitates the assembly and disassembly of the cleaning component by using a combination of a fixing component and a rangefinder body. The rangefinder body presses and moves a limiting block upwards, causing the limiting block to press the fixing buckle towards the center. The fixing buckle then hooks and secures the main support frame inside the second insertion port. Finally, the detachable baffle of the protective shell is installed and fixed, thus completing the fixation of the cleaning component. This convenient method allows for simultaneous control of the fixing and unlocking of the cleaning component during the installation and disassembly of the rangefinder body, making it more convenient and faster than screw fixation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a side sectional view of the present invention;

[0025] Figure 3 This is an overall view of the cleaning component and protective housing of the present invention;

[0026] Figure 4 This is a front sectional view of the cleaning component of the present invention;

[0027] Figure 5 This is an enlarged cross-sectional view of the oil stain scraping plate of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection between the main support frame and the fixing component of the present invention;

[0029] Figure 7 This is an enlarged schematic diagram of the limiting extrusion block of the present invention;

[0030] Figure 8 This is a schematic diagram of the overall fixing component of the present invention.

[0031] In the picture:

[0032] 1. Support and positioning base; 2. Protective housing; 3. High-resolution lens; 4. Rangefinder body;

[0033] 5. Cleaning components; 501. Main support frame; 502. Anti-splash baffle; 503. Servo motor; 504. Transmission screw; 505. First socket; 506. Second socket; 507. Oil scraper; 508. Sleeve connector; 509. Air supply channel; 5010. Oil cleaning jet nozzle;

[0034] 6. Fixing components; 601. Fixing buckle; 602. Spring; 603. Limiting compression block; 604. Abutting inclined surface; 605. Positioning insert block. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 8 As shown, the present invention provides a protective device for a laser rangefinder with an oil stain cleaning function, including a support and positioning base 1, a protective shell 2 fixedly connected to the top of the support and positioning base 1, and further including:

[0037] Cleaning component 5, which is installed on top of protective housing 2, is used to clean oil stains from the surface of protective housing 2;

[0038] The fixing component 6 is installed inside the protective housing 2 and is used to fix the cleaning component 5.

[0039] The cleaning component 5 includes a main support frame 501 placed on top of the protective housing 2. Anti-splash baffles 502 are fixedly connected to the top of both sides of the main support frame 501. An oil stain scraper 507 is provided inside the main support frame 501.

[0040] The fixing component 6 includes two sets of fixing buckles 601 that are movably connected to the protective housing 2 and a pair of positioning blocks 605 that are fixedly connected to the top of the protective housing 2.

[0041] The above solution is adopted: the oil-stain scraping plate 507 inside the cleaning component 5 slides back and forth along the main support frame 501, so that the oil-stain scraping plate 507 passes over the entire protective housing 2, and the oil-stain scraping plate 507 scrapes the oil stains off the top surface of the protective housing 2 and the side on which the high lens 3 is installed. This keeps the protective housing and the high lens clean and prevents the rangefinder body 4 from making errors and causing losses when it is working due to oil stains on the high lens 3.

[0042] like Figures 2 to 5 As shown, a servo motor 503 is fixedly connected inside one side of the main support frame 501, and a transmission screw 504 is fixedly connected to the output end of the servo motor 503. The end of the anti-splash baffle 502 away from the servo motor 503 is slidably connected to the protective shell 2.

[0043] The main support frame 501 has a pair of first sockets 505 at the bottom of one side near the transmission screw 504. A pair of second sockets 506 are provided in the middle of the pair of first sockets 505. The second sockets 506 are U-shaped with the opening facing downward. The pair of first sockets 505 and the pair of second sockets 506 are symmetrically distributed around the center of the protective shell 2.

[0044] The above solution is adopted as follows: By setting a servo motor 503 and a transmission screw 504, the servo motor 503 drives the transmission screw 504 to rotate, thereby controlling the oil scraping plate 507 to reciprocate, so that the oil scraping plate 507 can continuously clean the protective housing 2 and the high lens 3 during operation, so as to avoid the accumulation of oil and the pollution of the light transmission of the high lens 3, and ensure the accuracy of the distance measurement of the rangefinder body 4. The splash guard 502 is set up, and the end of the splash guard 502 away from the transmission screw 504 is slidably connected to the protective housing 2. When the cleaning component 5 is installed on the protective housing 2, the splash guard 502 is used for positioning, so as to ensure the quick and accurate installation of the cleaning component 5. In addition, the splash guard 502 is used as a barrier to prevent oil from splashing and polluting the working environment.

[0045] The design of the first socket 505 and the second socket 506, with their symmetrical distribution, allows the first socket 505 to be aligned with the fixing component 6 to align the cleaning component 5 and the protective housing 2. The design of the second socket 506, after alignment, allows it to be clamped by the fixing buckle 601 through the crossbar in the middle, preventing the main support frame 501 from moving upwards, thereby fixing the cleaning component 5 and the protective housing 2.

[0046] like Figures 2 to 6 As shown, the transmission screw 504 is threadedly connected to the oil scraper 507. The oil scraper 507 is slidably connected inside the main support frame 501 and its two sides respectively abut against the anti-splash baffles 502 located on both sides of the main support frame 501. The oil scraper 507 is L-shaped and abuts against the side and top surface of the protective shell 2 facing the working area.

[0047] The oil scraper 507 has multiple oil cleaning air jet holes 5010 linearly distributed on both sides facing the protective housing 2. The oil scraper 507 has an air supply channel 509 inside, which is connected to the oil cleaning air jet holes 5010. The oil scraper 507 has two sleeve joints 508 on its side.

[0048] The above solution is adopted: by setting an oil stain scraper 507, the oil stain scraper 507 slides back and forth along the main support frame 501 inside the main support frame 501, so that the oil stain scraper 507 can scrape off the oil stains adhering to the protective shell 2 and the high lens 3 during the movement, so as to achieve the effect of cleaning the oil stains on the surface of the protective shell 2 and the high lens 3.

[0049] The air supply channel 509 and the oil stain cleaning jet hole 5010 are designed to clean the oil stain scraper 507 itself. The high-pressure air received through the air supply channel 509 is diverted and guided to the oil stain cleaning jet hole 5010, where it is sprayed out to impact the oil stains adhering to the oil stain scraper 507. This high-pressure impact removes the oil stains adhering to the oil stain scraper 507, keeping the oil stain scraper 507 clean and preventing oil stains from accumulating and remaining on the surface of the protective housing 2 or the high-lens lens 3, thus ensuring the cleaning effect of the oil stain scraper 507.

[0050] like Figures 4 to 6 As shown, the sleeve connector 508 is connected to an industrial compressor via an air pipe. The sleeve connector 508 is connected to the air supply channel 509. After the oil scraper 507 comes into contact with the anti-splash baffle 502, it will cooperate with the anti-splash baffle 502 to form a downward-opening cavity on the side of the protective housing 2.

[0051] The above solution is adopted: by setting a sleeve joint 508, the air received from the external industrial compressor is guided into the air delivery channel 509 by the sleeve joint 508. At the same time, the sleeve joint 508 located at the horizontal end of the oil scraper 507 is set in the middle of the air delivery channel 509 to ensure the efficiency of air delivery to both ends of the air delivery channel 509.

[0052] The cavity formed by the contact and encirclement of the oil scraper 507 and the anti-splash baffle 502 prevents oil from splashing and provides space for cleaning the oil scraper 507, ensuring the cleanliness of the oil scraper 507 itself, thereby ensuring the light transmittance of the high lens 3 and preventing losses caused by errors in the rangefinder body 4.

[0053] like Figure 3 and Figure 6 As shown, the fixing buckle 601 is inserted into the second socket 506, and the protective shell 2 and the main support frame 501 are fixed by the fixing buckle 601 and the hook inside the second socket 506. A pair of positioning blocks 605 are inserted into the first socket 505 at the corresponding positions. A set of fixing buckles 601 are located inside the protective shell 2, and one end of each end is far away from each other and is in the shape of a downward-facing inclined surface.

[0054] One end of the fixing buckle 601 located inside the protective housing 2 abuts against the limiting compression block 603. A spring 602 is fixedly connected in the middle of a pair of fixing buckles 601. The limiting compression block 603 is slidably connected to the top of the inner wall of the protective housing 2. An abutting inclined surface 604 is provided at the bottom corner of the limiting compression block 603 away from the transmission screw 504.

[0055] The above solution is adopted: by setting the fixing component 6, the fixing buckle 601 and the positioning block 605 assist the cleaning component 5 in positioning. At the same time, the fixing buckle 601 can hook and fix the main support frame 501, so that the main support frame 501 is fixed to the top of the protective shell 2. The setting of the spring 602 allows the fixing buckle 601 to remain open when the rangefinder body 4 is not installed, so that the cleaning component 5 remains movable, which facilitates the disassembly of the cleaning component 5.

[0056] The setting of the limiting compression block 603 and the abutting inclined surface 604 allows the fixing buckle 601 to fix the cleaning component 5 as the rangefinder body 4 is installed, so that the cleaning component 5 can be unlocked as the rangefinder body 4 is disassembled during overall maintenance and repair, thus realizing convenient disassembly and installation.

[0057] like Figures 2 to 8 As shown, a high-resolution lens 3 is installed on one side of the protective housing 2. The rangefinder body 4 is placed inside the protective housing 2, and rubber pads are filled on both sides of the rangefinder body 4 inside the protective housing 2. The protective housing 2 is provided with a grid-like reinforcing rib. Vertical grooves for sliding connection with the splash guard 502 are opened on both sides of the end of the protective housing 2 away from the high-resolution lens 3. The rangefinder body 4 abuts against the inclined surface 604. The protective housing 2 includes two parts: the housing and the detachable baffle. The housing part is fixedly connected to the support and positioning base 1. The detachable baffle is located on the side of the protective housing 2 away from the high-resolution lens 3, and a slot for placing the wiring of the rangefinder body 4 is opened in the middle.

[0058] The above solution is adopted: by setting rubber pads and mesh reinforcing ribs, the protective shell 2 is strengthened to prevent damage to the rangefinder body 4. At the same time, the rubber pads can fix the rangefinder body 4 to prevent errors caused by vibration displacement of the rangefinder body 4.

[0059] Working principle and usage process of this invention:

[0060] During installation, first align the first and second insertion ports 505 and 506 at the bottom of the main support frame 501 with the positioning block 605 and the fixing buckle 601. Simultaneously, align the side of the splash guard 502 away from the transmission screw 504 with the vertical groove at the end of the protective housing 2 away from the high-angle lens 3. Then place it on top of the protective housing 2, so that the main support frame 501 and the splash guard 502 block the sides of the protective housing 2. Afterward, place the rangefinder body 4 inside the protective housing 2. The body 4 pushes the rubber pad inside the protective shell 2 to both sides, so that the rangefinder body 4 can be stably fixed inside the protective shell 2. At the same time, the rangefinder body 4 will abut against the contact slope 604 and squeeze the limiting compression block 603 to move upward, so that the limiting compression block 603 squeezes the fixing buckle 601 to close in the middle. The fixing buckle 601 hooks and fixes the main support frame 501 inside the second insertion port 506. Then the detachable baffle of the protective shell 2 is installed and fixed, thus completing the fixation of the cleaning component 5.

[0061] During operation, the servo motor 503 periodically drives the transmission screw 504 to rotate, causing the transmission screw 504 to drive the oil scraping plate 507 to reciprocate along the main support frame 501. This allows the oil scraping plate 507 to pass over the entire protective housing 2, scraping away oil from the top surface and the side where the high-resolution lens 3 is installed. Simultaneously, the oil scraping plate 507 also removes oil from the surface of the high-resolution lens 3, ensuring its cleanliness and preventing any impact on the laser ranging effect of the rangefinder body 4. The oil scraping plate 507 then moves to a position where it has scraped away oil and moved towards a... After the side splash guard 502 comes into contact, the oil scraper 507 and the splash guard 502 will cooperate to form a downward-opening cavity. Then, the external industrial compressor can be started, and the industrial compressor will supply air into the air supply channel 509 through the pipe and sleeve joint 508, and then discharge it from the oil cleaning jet hole 5010. At this time, the oil cleaning jet hole 5010 located inside the oil scraper 507 and the splash guard 502 will clean the oil adhering to the scraper with high-pressure airflow. At the same time, the splash guard 502 can prevent oil from splashing, thereby ensuring the cleanliness of the working environment.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for a burr shear laser range finder with oil stain cleaning function, comprising a supporting and positioning base (1), a protective shell (2) is fixedly connected to the top of the supporting and positioning base (1), characterized in that, Also include: Cleaning assembly (5) is installed at the top of the protective shell (2), for the surface of the protective shell (2) oil cleaning; Fixed assembly (6) is installed in the inside of the protective shell (2), for cleaning assembly (5) is fixed; Wherein, the cleaning assembly (5) includes the main body support frame (501) placed on the top of the protective shell (2), the main body support frame (501) both sides top fixedly connected with the anti-splashing baffle (502), the main body support frame (501) is provided with oil stain scraping plate (507) inside; The fixed assembly (6) includes two groups of fixed buckle (601) and a pair of positioning block (605) fixedly connected with the protective shell (2) and the top of the protective shell (2).

2. The protector of the laser range finder of the edge trimmer with the oil stain cleaning function according to claim 1, characterized in that: The main body support frame (501) is fixedly connected with servo motor (503) on one side inside, the servo motor (503) output end is fixedly connected with transmission screw (504), the anti-splashing baffle (502) is slidably connected with the protective shell (2) away from one end of the servo motor (503).

3. The protector of the laser range finder of the edge trimmer with the oil stain cleaning function according to claim 2, characterized in that: The main body support frame (501) is provided with a pair of first socket (505) on one side bottom close to the transmission screw (504), a pair of first socket (505) is provided with a pair of second socket (506) in the middle, the second socket (506) is a concave shape with the opening downward, a pair of first socket (505) and a pair of second socket (506) are symmetrically distributed with the center of the protective shell (2).

4. The protector of the laser range finder of the edge trimmer with the oil stain cleaning function according to claim 2, characterized in that: The transmission screw (504) is threadedly connected with the oil stain scraping plate (507), the oil stain scraping plate (507) is slidably connected inside the main body support frame (501) and both sides respectively with the anti-splashing baffle (502) located on both sides of the main body support frame (501) independently abutting, the oil stain scraping plate (507) is L-shaped and abuts with the surface and top surface of the protective shell (2) towards the working area.

5. The protector of the laser range finder of the edge trimmer with the oil stain cleaning function according to claim 4, characterized in that: The oil stain scraping plate (507) is linearly distributed and provided with a plurality of oil stain cleaning jet holes (5010) on both sides towards the protective shell (2), the oil stain scraping plate (507) is provided with a gas conveying channel (509) inside, the gas conveying channel (509) and the oil stain cleaning jet hole (5010) are communicated, the oil stain scraping plate (507) is provided with two sleeve joints (508) on the side.

6. The protector of the laser range finder of the edge trimmer with the oil stain cleaning function according to claim 5, characterized in that: The sleeve joint (508) is externally connected with an industrial compressor through the trachea, the sleeve joint (508) is communicated with the gas conveying channel (509), the oil stain scraping plate (507) abuts with the anti-splashing baffle (502), and an opening downward cavity is formed on the side of the protective shell (2) in cooperation with the anti-splashing baffle (502).

7. The protector of the laser range finder of the edge trimmer with oil dirt cleaning function according to claim 1, characterized in that: The fixed buckle (601) is inserted into the second socket (506), and the protective shell (2) and the main body support frame (501) are fixed by the fixed buckle (601) and the inner hanging buckle of the second socket (506), a pair of the positioning plug blocks (605) are inserted into the corresponding position of the first socket (505), and one end of the fixed buckle (601) located in the protective shell (2) is in a shape of a downward folding slope at a corner away from each other.

8. The protector of the laser range finder of the edge trimmer with the oil dirt cleaning function according to claim 7, characterized in that: The fixed buckle (601) located in the protective shell (2) is in abutment with the limiting extrusion block (603), a pair of the fixed buckles (601) are fixedly connected with springs (602) in the middle, the limiting extrusion block (603) is slidingly connected to the top of the inner wall of the protective shell (2), and the limiting extrusion block (603) is provided with an abutment slope (604) at a corner away from the transmission lead screw (504) on the bottom.

9. The protector of the laser range finder of the edge trimmer with the oil dirt cleaning function according to claim 1, characterized in that: One side of the protective shell (2) is provided with a high-transparency lens (3), the protective shell (2) is internally provided with a range finder body (4), rubber pads are filled on both sides of the range finder body (4) in the protective shell (2), the protective shell (2) is internally provided with a grid-shaped reinforcing rib, and vertical grooves for slidingly connecting with the anti-splashing baffle (502) are formed in the two sides of one end of the protective shell (2) away from the high-transparency lens (3).

10. The protector of the laser range finder of the edge trimmer with the oil stain cleaning function according to claim 9, characterized in that: The range finder body (4) is in abutment with the abutment slope (604), the protective shell (2) comprises a shell and a detachable baffle, the shell is fixedly connected with the support positioning base (1), and the detachable baffle is located on the side of the protective shell (2) away from the high-transparency lens (3) and is provided with a slot in the middle for placing a circuit of the range finder body (4).

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