Diamond polishing and filling device and method

Abstract

The invention discloses a diamond polishing and filling device which comprises a cart, a storage box is mounted on the cart, a vertical U-shaped plate is fixedly connected to one end of the cart and one end of the storage box, a lifting mechanism is arranged on the U-shaped plate, a horizontal displacement mechanism is arranged on the lifting mechanism, an L-shaped base is mounted on the horizontal displacement mechanism, and a first mounting cavity is formed in the top of the base. A second mounting cavity is formed in the bottom of the base, a polishing mechanism capable of deflecting is mounted on the base, and a filling and leveling mechanism is further mounted on the base. The wall surface is firstly polished through the polishing mechanism, and then the paint is sprayed through the filling and leveling mechanism after polishing is finished, so that the paint is sprayed and leveled at the same time, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to a diamond grinding and leveling device and method. Background Art

[0002] When the wall surface is damaged, such as when the wall surface becomes uneven due to corrosion or collision, the wall needs to be repaired.

[0003] During repair, the wall surface must first be sanded, then sprayed with paint or concrete, and finally leveled with a scraper. All three steps must be completed manually, one by one, in sequence, resulting in low sanding and leveling efficiency. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a diamond grinding and filling device and method to solve the problem of low grinding and filling efficiency during wall repair.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The lifting mechanism is connected with the lifting mechanism of the lifting mechanism, and the lifting mechanism is connected with the lifting mechanism of the lifting mechanism washer, and the lower end of the L-shaped base is connected with the lifting mechanism of the lifting mechanism.

[0007] Preferably, the grinding mechanism includes a first articulated seat connected to the upper part of the base, a second articulated seat connected to the lower part of the base, a fourth oil cylinder articulated on the first articulated seat, a fifth oil cylinder articulated on the second articulated seat, a third mounting plate connected to the telescopic end of the fifth oil cylinder, a grinding motor mounted on the third mounting plate, a connecting shaft transmission-connected to the grinding motor, and a diamond grinding disc transmission-connected to the connecting shaft, the cylinder barrel of the fifth oil cylinder is connected to the third articulated seat, and the telescopic end of the fourth oil cylinder is pivotally connected to the third articulated seat.

[0008] The above technical solution controls the extension of the fifth oil cylinder to drive the diamond grinding disc into contact with the wall surface. The grinding motor is then activated to rotate the diamond grinding disc, achieving grinding. After grinding is completed, the contraction of the fourth oil cylinder causes the fifth oil cylinder to flip upward, thereby moving the diamond grinding disc away from the wall surface.

[0009] Preferably, the lifting mechanism includes a first screw rod rotatably connected to the U-shaped plate through a rotary bearing, a first guide rod connected to the U-shaped plate, and a first motor installed on the upper end of the U-shaped plate. The first motor is transmission-connected to the first screw rod, and a lifting seat is threadedly connected to the first screw rod. The lifting seat is provided with a first sliding hole, and is slidingly connected to the first guide rod through the first sliding hole.

[0010] The above technical solution controls the first motor to work and drives the first screw rod to rotate. When the first screw rod rotates, it drives the lifting seat to move up and down along the first guide rod.

[0011] The horizontal displacement mechanism includes bearing seats connected to the front and rear ends of the lifting seat, a second screw rod rotatably connected to the two bearing seats through a rotary bearing, a second guide rod connected to the two bearing seats, and a second motor installed at the front end of the lifting seat. The second motor is transmission-connected to the second screw rod, and a sliding seat is threadedly connected to the second screw rod. A second sliding hole is opened on the sliding seat, and the sliding seat is slidably connected to the second guide rod through the second sliding hole. The base is fixed on the sliding seat.

[0012] The above technical solution controls the second motor to operate, thereby driving the second screw rod to rotate. When the second screw rod rotates, it drives the slide to move forward and backward along the second guide rod.

[0013] Preferably, a feeding port is provided on the top of the storage box, a transparent liquid level observation window is provided on the side wall of the storage box, a stirring paddle is provided inside the storage box, and a third motor for driving the stirring paddle to rotate is provided at the outer end of the storage box.

[0014] According to the above technical solution, paint can be added to the storage box through the feeding port, the height of the paint can be observed through the liquid level observation window, and the third motor drives the stirring paddle to rotate, thereby stirring the paint in the storage box to make the paint more uniform.

[0015] Preferably, the material delivery pipeline includes a pump body installed outside the storage box, the inlet end of the pump body is connected to the storage box through a pipeline, the outlet end of the pump body is connected to a paint outlet pipe, the paint outlet pipe is connected to a hose, and one end of the hose is connected to the nozzle.

[0016] In the above technical solution, the pump body works to extract the paint in the storage box, and sends it to the nozzle through the paint outlet pipe and hose, and then sprays it out through the nozzle.

[0017] Preferably, a guide plate is connected to one side of the U-shaped plate, a guide hole is opened on the guide plate, the hose is movably arranged in the guide hole, and the length of the hose is greater than the stroke of the lifting mechanism and the horizontal displacement mechanism.

[0018] In the above technical solution, when the nozzle is moving, the hose always slides in the guide hole, which can constrain the hose to a certain extent. In addition, the length of the hose is greater than the stroke of the lifting mechanism and the horizontal displacement mechanism, which can prevent the hose from falling off the nozzle.

[0019] Preferably, both sides of the lower part of the cart are connected with lifting ears, a downward sixth oil cylinder is installed on the lifting ears, and the telescopic end of the sixth oil cylinder is connected to a support plate.

[0020] The above technical solution controls the extension of the sixth oil cylinder to drive the support plate down and into contact with the ground, thereby keeping the cart stable as a whole.

[0021] Preferably, one end of the scraper strip is provided with an insert plate, the end surface of the second mounting plate is provided with a slot, and matching screw holes are provided on the insert plate and the slot. After the insert plate is inserted into the slot, the insert plate is fixed in the slot by the cooperation of the screw and the screw hole.

[0022] In the above technical solution, the scraper strip is connected to the second mounting plate by screws, which makes it easy to replace the scraper strip.

[0023] The present invention also provides a grinding and leveling method, which uses the diamond grinding and leveling device, comprising the following steps:

[0024] Push the cart to the wall to be sanded, then control the sixth cylinder to extend so that the support plate contacts the ground, thereby keeping the cart stable;

[0025] Then, the height of the diamond grinding disc is adjusted through the lifting mechanism, and the fifth oil cylinder is controlled to extend so that the diamond grinding disc contacts the part to be polished on the wall surface. Then, the grinding mechanism is controlled to move back and forth through the horizontal displacement mechanism to polish the part to be polished.

[0026] After grinding is completed, the fifth oil cylinder retracts to retract the diamond grinding disc, and then the fourth oil cylinder is controlled to retract, causing the fifth oil cylinder to deflect upward, thereby moving the diamond grinding disc away from the wall;

[0027] Then control the first oil cylinder to extend to move the lifting plate out of the second installation cavity, and then control the second oil cylinder to extend to move the nozzle close to the wall. Then adjust the height of the nozzle through the lifting mechanism to align the nozzle with the polished part. Then control the third oil cylinder to extend to make the scraper contact the wall. Then, deliver paint to the nozzle through the material delivery pipeline. At the same time, drive the nozzle and scraper forward through the horizontal displacement mechanism to realize spraying paint while scraping the paint, thereby filling the wall.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] Push the cart to the wall to be sanded, and the horizontal displacement mechanism controls the forward and backward movement of the sanding mechanism to sand the area to be sanded. During sanding, the leveling mechanism is always located in the base, so the leveling mechanism will not affect the sanding work, and the debris generated by sanding will not cause wear to the leveling mechanism.

[0030] After grinding, the diamond grinding wheel is moved away from the wall, the first oil cylinder is controlled to extend, the lifting plate is moved out of the second installation cavity, and the third oil cylinder is controlled to extend so that the scraper contacts the wall. Then, the paint is transported to the nozzle through the material delivery pipeline, the paint is sprayed through the nozzle, and the paint is leveled by the scraper, so that the paint can be sprayed and scraped at the same time, which greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the present invention;

[0032] Figure 2 A schematic diagram of the filling mechanism;

[0033] Figure 3 is a schematic diagram of the present invention and the wall to be polished;

[0034] Figure 4 This is a schematic diagram of sanding the wall;

[0035] Figure 5 This is a schematic diagram of spraying a wall;

[0036] In the figure: 1-trolley, 2-storage box, 3-U-shaped plate, 4-lifting mechanism, 401-first screw rod, 402-first guide rod, 403-first motor, 404-lifting seat, 5-horizontal displacement mechanism, 501-bearing seat, 502-second motor, 503-slide seat, 6-base, 601-first installation cavity, 602-second installation cavity, 7-grinding mechanism, 701-first articulated seat, 702-second articulated seat, 703-fourth oil cylinder, 704-fifth oil cylinder, 705-third installation plate, 706-grinding Grinding motor, 707-diamond grinding disc, 708-third hinge seat, 8-filling mechanism, 801-first oil cylinder, 802-lifting plate, 803-second oil cylinder, 804-third oil cylinder, 805-first mounting plate, 806-second mounting plate, 807-nozzle, 808-scraper, 809-insert plate, 9-feeding pipeline, 901-pump body, 902-hose, 10-feeding port, 11-liquid level observation window, 12-stirring paddle, 13-third motor, 14-guide plate, 15-sixth oil cylinder, 16-support plate. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0038] Example 1

[0039] See also Figure 1-Figure 5 A diamond grinding and filling device includes a trolley 1, a storage box 2 is installed on the trolley 1, and an armrest is installed on the upper part of one end of the storage box 2. The trolley 1 and the storage box 2 are fixedly connected to the end away from the armrest with a vertical U-shaped plate 3. A lifting mechanism 4 is provided on the U-shaped plate 3, and a horizontal displacement mechanism 5 is connected to the lifting mechanism 4. An L-shaped base 6 is installed on the horizontal displacement mechanism 5. The base can be driven up and down by the lifting mechanism, and can be driven forward and backward by the horizontal displacement mechanism 5.

[0040] Specifically, the lifting mechanism 4 includes a first screw rod 401 rotatably connected to the U-shaped plate via a rotary bearing, a first guide rod 402 connected to the U-shaped plate, and a first motor 403 mounted on the upper end of the U-shaped plate. The first motor 403 is in transmission connection with the first screw rod 401. The first screw rod 401 is threadedly connected to a lifting seat 404. The lifting seat 404 has a first sliding hole and is slidably connected to the first guide rod 402 through the first sliding hole. The horizontal displacement mechanism 5 includes a bearing seat 501 connected to the front and rear ends of the lifting seat 404, a second screw rod rotatably connected to the two bearing seats via a rotary bearing, a second guide rod connected to the two bearing seats, and a second motor 502 mounted on the front end of the lifting seat. The second motor 502 is in transmission connection with the second screw rod. The second screw rod is threadedly connected to a slide 503. The slide 503 has a second sliding hole and is slidably connected to the second guide rod through the second sliding hole. The base 6 is fixed to the slide 503. The first motor 403 rotates the first screw 401, which in turn drives the lifting base 404 to move up and down along the first guide rod 402. The second motor 502 rotates the second screw, which in turn drives the sliding base 503 to move forward and backward along the second guide rod. Together, the first and second motors drive the base to move vertically and forward and backward, adjusting the position of the grinding mechanism 7.

[0041] The top of the base 6 is provided with a first mounting cavity 601, the bottom of the base 6 is provided with a second mounting cavity 602, and a deflectable grinding mechanism 7 is mounted on the base 6. Specifically, the grinding mechanism 7 includes a first hinged seat 701 connected to the upper portion of the base, a second hinged seat 702 connected to the lower portion of the base, a fourth oil cylinder 703 hinged to the first hinged seat, a fifth oil cylinder 704 hinged to the second hinged seat, a third mounting plate 705 connected to the telescopic end of the fifth oil cylinder, a grinding motor 706 mounted on the third mounting plate, a connecting shaft transmission-connected to the grinding motor, and a diamond grinding disc 707 transmission-connected to the connecting shaft. The cylinder barrel of the fifth oil cylinder 704 is connected to a third hinged seat 708, and the telescopic end of the fourth oil cylinder 703 is pivotally connected to the third hinged seat 708. By controlling the extension of the fifth oil cylinder 704, the diamond grinding disc 707 can be driven to contact the wall surface, and the grinding motor 706 can be operated to drive the diamond grinding disc 707 to rotate, thereby achieving grinding. After grinding is completed, the fourth oil cylinder 703 is retracted, causing the fifth oil cylinder 704 to flip upward 90 degrees, thereby moving the diamond grinding disc 707 away from the wall surface.

[0042] The diamond grinding disc 707 is connected to the connecting shaft via a keyway machined into the connecting shaft and fitted with a flat or woodruff key. The center hole of the diamond grinding disc 707 also has a corresponding keyway machined into it. The keyway of the diamond grinding disc 707 cooperates with the key on the connecting shaft to transmit torque and prevent slippage. Finally, a large lock nut secures the diamond grinding disc 707 axially against the connecting shaft shoulder.

[0043] A leveling mechanism 8 is also mounted on the base 6. Specifically, the leveling mechanism 8 includes a first oil cylinder 801 mounted in a first mounting cavity, a lifting plate 802 connected to the lower end of the first oil cylinder, a second oil cylinder 803 and a third oil cylinder 804 mounted on the lifting plate, a first mounting plate 805 connected to the telescopic end of the second oil cylinder, a second mounting plate 806 connected to the telescopic end of the third oil cylinder, a spray head 807 mounted on the first mounting plate, and a scraper 808 mounted on the second mounting plate via screws. The lifting plate 802, the second oil cylinder 803, the third oil cylinder 804, the first mounting plate 805, the second mounting plate 806, the scraper 808, and the spray head 807 are all hidden in the second mounting cavity 602. When the wall is not being filled, the leveling mechanism is entirely located within the base. On the one hand, the leveling mechanism does not affect the grinding work, and on the other hand, the debris generated by grinding does not cause wear to the leveling mechanism.

[0044] The spray head 807 is connected to the material storage box 2 via a feed pipe 9. The feed pipe 9 includes a pump body 901 installed outside the material storage box. The inlet end of the pump body 901 is connected to the material storage box 2 via a pipe, and the outlet end of the pump body 901 is connected to a paint outlet pipe, which is connected to a hose 902. One end of the hose 902 is connected to the spray head 807. A guide plate 14 is connected to one side of the U-shaped plate 3. The guide plate 14 is provided with a guide hole. The hose 902 is movably arranged in the guide hole. The length of the hose 902 is greater than the stroke of the lifting mechanism 4 and the horizontal displacement mechanism 5. When the pump body 901 is in operation, the paint in the material storage box 2 is extracted and delivered to the spray head 807 through the paint outlet pipe and hose 902, and then sprayed out through the spray head 807. When the nozzle 807 moves up and down or forward and backward, the hose 902 always slides in the guide hole, which can constrain the hose 902 to a certain extent. In addition, the length of the hose 902 is greater than the stroke of the lifting mechanism 4 and the horizontal displacement mechanism 5, which can prevent the hose 902 from falling off the nozzle 807.

[0045] One end of the scraper strip 808 is provided with an insert plate 809. A slot is provided on the end surface of the second mounting plate 806. Both the insert plate 809 and the slot have matching screw holes. Once the insert plate 809 is inserted into the slot, the screws and the screw holes secure it in place. The scraper strip 808 is screwed to the second mounting plate 806, making it easy to replace. Furthermore, the scraper strip can be made of rubber to prevent scratching the wall.

[0046] The top of the storage tank 2 is equipped with a feed port 10, and the sidewalls are provided with a transparent liquid level observation window 11 with millimeter scale. A stirring paddle 12 is located within the storage tank 2, and a third motor 13 is located at the outer end of the storage tank 2 to drive the stirring paddle. Paint can be added to the storage tank 2 through the feed port 10, and the paint level can be observed through the liquid level observation window 11. The third motor 13 drives the stirring paddle 12 to rotate, stirring the paint in the storage tank 2 for a more uniform coating. A sealing ring is required at the connection between the stirring paddle and the storage tank to improve the seal.

[0047] The lower part of the cart 1 is connected to two sides of the lifting lugs, on which a downward-pointing sixth oil cylinder 15 is mounted. The telescopic end of the sixth oil cylinder 15 is connected to a support plate 16. By controlling the extension of the sixth oil cylinder 15, the support plate 16 is driven to descend and contact the ground, so that the cart 1 as a whole can be kept stable.

[0048] This device also requires a supporting hydraulic system, which includes hydraulic components such as a hydraulic pump, a directional control valve, an oil tank, and a pressure control valve to provide power to each hydraulic cylinder. The hydraulic cylinder and the hydraulic system are prior art and will not be described in detail in this embodiment.

[0049] Example 2

[0050] A grinding and leveling method, using the diamond grinding and leveling device, includes the following steps: pushing the cart 1 to the wall to be polished, then controlling the sixth oil cylinder 15 to extend so that the support plate 17 contacts the ground, thereby keeping the cart 1 stable; then starting the first motor 403 to drive the lifting seat 404 to move, so as to adjust the height of the diamond grinding disc 707 so that the diamond grinding disc is aligned with the part to be polished, then controlling the fifth oil cylinder 704 to extend so that the diamond grinding disc 707 contacts the part to be polished on the wall, then starting the second motor 502 to drive the slide 503 to move back and forth, and at the same time starting the polishing motor 706 to drive the diamond grinding disc 707 to rotate, thereby polishing the part to be polished.

[0051] After grinding is completed, the fifth oil cylinder 704 contracts to retract the diamond grinding disc 707, and then the fourth oil cylinder 703 is controlled to contract to deflect the fifth oil cylinder 707 upward by 90 degrees, thereby moving the diamond grinding disc 707 away from the wall.

[0052] Then, the first oil cylinder 801 is controlled to extend so that the lifting plate 802 moves out of the second installation cavity 602, and then the second oil cylinder 803 is controlled to extend so that the nozzle 807 is close to the wall. Then, the height of the nozzle 807 is adjusted through the lifting mechanism 4 so that the nozzle 807 is aligned with the polished part. Then, the third oil cylinder 804 is controlled to extend so that the scraper 808 contacts the wall. Then, paint is delivered to the nozzle 807 through the material delivery pipeline 9. At the same time, the nozzle 807 and the scraper 808 are driven forward by the horizontal displacement mechanism 5 to achieve spraying and scraping the paint at the same time, thereby filling the wall.

[0053] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A diamond grinding and leveling device, characterized in that: The invention comprises a trolley (1), a material storage box (2) is installed on the trolley (1), a vertical U-shaped plate (3) is fixedly connected to one end of the trolley (1) and the material storage box (2), a lifting mechanism (4) is provided on the U-shaped plate (3), a horizontal displacement mechanism (5) is transmission-connected to the lifting mechanism (4), an L-shaped base (6) is installed on the horizontal displacement mechanism (5), a first installation cavity (601) is provided on the top of the base (6), a second installation cavity (602) is provided on the bottom of the base (6), a deflectable grinding mechanism (7) is installed on the base (6), and a filling mechanism (8) is also installed on the base (6); The filling mechanism (8) comprises a first oil cylinder (801) installed in a first installation cavity, a lifting plate (802) connected to the lower end of the first oil cylinder, a second oil cylinder (803) and a third oil cylinder (804) installed on the lifting plate, a first installation plate (805) connected to the telescopic end of the second oil cylinder, a second installation plate (806) connected to the telescopic end of the third oil cylinder, a spray head (807) installed on the first installation plate, and a scraper (808) installed on the second installation plate by screws. The lifting plate (802), the second oil cylinder (803), the third oil cylinder (804), the first installation plate (805), the second installation plate (806), the scraper (808), and the spray head (807) are all hidden in the second installation cavity (602); the spray head (807) is connected to the material storage box (2) through a material delivery pipeline (9).

2. A diamond grinding and leveling device according to claim 1, characterized in that: The grinding mechanism (7) comprises a first hinged seat (701) connected to the upper part of the base, a second hinged seat (702) connected to the lower part of the base, a fourth oil cylinder (703) hinged on the first hinged seat, a fifth oil cylinder (704) hinged on the second hinged seat, a third mounting plate (705) connected to the telescopic end of the fifth oil cylinder, a grinding motor (706) mounted on the third mounting plate, a connecting shaft transmission-connected to the grinding motor, and a diamond grinding disc (707) transmission-connected to the connecting shaft; a third hinged seat (708) is connected to the cylinder barrel of the fifth oil cylinder (704); and the telescopic end of the fourth oil cylinder (703) is pivotally connected to the third hinged seat (708).

3. A diamond grinding and leveling device according to claim 2, characterized in that: The lifting mechanism (4) comprises a first screw rod (401) rotatably connected to the U-shaped plate through a rotary bearing, a first guide rod (402) connected to the U-shaped plate, and a first motor (403) installed on the upper end of the U-shaped plate, the first motor (403) being transmission-connected to the first screw rod (401), a lifting seat (404) being threadedly connected to the first screw rod (401), a first sliding hole being provided on the lifting seat (404), and being slidingly connected to the first guide rod (402) through the first sliding hole; The horizontal displacement mechanism (5) comprises a bearing seat (501) connected to the front and rear ends of the lifting seat (404), a second screw rod rotatably connected to the two bearing seats through a rotary bearing, a second guide rod connected to the two bearing seats, and a second motor (502) installed at the front end of the lifting seat. The second motor (502) is transmission-connected to the second screw rod, a slide seat (503) is threadedly connected to the second screw rod, a second sliding hole is opened on the slide seat (503), and the slide seat (503) is slidably connected to the second guide rod through the second sliding hole. The base (6) is fixed on the slide seat (503).

4. A diamond grinding and leveling device according to claim 3, characterized in that: The top of the storage box (2) is provided with a feeding port (10), the side wall of the storage box (2) is provided with a transparent liquid level observation window (11), a stirring paddle (12) is provided inside the storage box (2), and a third motor (13) for driving the stirring paddle to rotate is provided at the outer end of the storage box (2).

5. The diamond grinding and leveling device according to claim 4, characterized in that: The material delivery pipeline (9) includes a pump body (901) installed outside the material storage box, the inlet end of the pump body (901) is connected to the material storage box (2) through a pipeline, the outlet end of the pump body (901) is connected to a paint outlet pipe, and the paint outlet pipe is connected to a hose (902), and one end of the hose (902) is connected to the nozzle (807).

6. The diamond grinding and leveling device according to claim 5, characterized in that: A guide plate (14) is connected to one side of the U-shaped plate (3). A guide hole is provided on the guide plate (14). A hose (902) is movably arranged in the guide hole. The length of the hose (902) is greater than the stroke of the lifting mechanism (4) and the horizontal displacement mechanism (5).

7. The diamond grinding and leveling device according to claim 6, characterized in that: Both sides of the lower part of the cart (1) are connected with lifting ears, and a downward sixth oil cylinder (15) is installed on the lifting ears, and the telescopic end of the sixth oil cylinder (15) is connected to a support plate (16).

8. The diamond grinding and leveling device according to claim 7, characterized in that: One end of the scraper (808) is provided with an inserting plate (809), and the end surface of the second mounting plate (806) is provided with a slot. The inserting plate (809) and the slot are provided with matching screw holes. After the inserting plate (809) is inserted into the slot, the inserting plate (809) is fixed in the slot by the matching of the screws and the screw holes.

9. A grinding and leveling method using the diamond grinding and leveling device according to claim 8, characterized in that: The following steps are involved: Push the cart (1) to the wall to be polished, then control the sixth oil cylinder (15) to extend so that the support plate (17) contacts the ground, thereby keeping the cart (1) stable; Then, the height of the diamond grinding disc (707) is adjusted by the lifting mechanism (4), and then the fifth oil cylinder (704) is controlled to extend so that the diamond grinding disc (707) contacts the part to be polished on the wall surface, and then the polishing mechanism (7) is controlled to move back and forth by the horizontal displacement mechanism (5), thereby polishing the part to be polished; After the grinding is completed, the fifth oil cylinder (704) contracts to retract the diamond grinding disc (707), and then the fourth oil cylinder (703) is controlled to contract to deflect the fifth oil cylinder (707) upward, thereby moving the diamond grinding disc (707) away from the wall. Then, the first oil cylinder (801) is controlled to extend so that the lifting plate (802) moves out of the second installation cavity (602). Then, the second oil cylinder (803) is controlled to extend so that the nozzle (807) is close to the wall. Then, the height of the nozzle (807) is adjusted by the lifting mechanism (4) so ​​that the nozzle (807) is aligned with the polished part. Then, the third oil cylinder (804) is controlled to extend so that the scraper (808) contacts the wall. Then, the paint is transported to the nozzle (807) through the feeding pipeline (9). At the same time, the nozzle (807) and the scraper (808) are driven forward by the horizontal displacement mechanism (5) to achieve the goal of spraying the paint while scraping the paint, thereby filling the wall.

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