A device for leveling a building wall surface

Abstract

The application belongs to the technical field of wall polishing, and particularly relates to a building wall leveling treatment device, which comprises a track assembly, a moving plate connected to the moving end of the track assembly, an angle motor and a controller connected to the upper side wall of the moving plate, and a rotating plate connected to the output end of the angle motor. The curvature of the track frame in the track assembly can be customized in advance and reused, so that the polishing assembly can always adhere to the wall when the wall leveling treatment device is used to polish and level the whole large curved wall, the leveling effect of the curved wall is ensured, and in the process of polishing the curved wall by the wall leveling treatment device, the polishing angle of the polishing roller is always perpendicular to the tangent of the curved wall, the perpendicular angle can ensure that the cutting depth and range of adjacent polishing areas are uniform, the joint will not have "step marks" due to angle deviation, and the whole curved surface is smooth and coherent.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wall surface polishing, and particularly relates to a building wall surface leveling treatment device. BACKGROUND

[0002] After the main structure of newly-built houses, commercial buildings, office buildings and the like is completed, the wall surface usually has problems such as uneven concrete pouring and joint gaps of masonry blocks, and in order to meet the basic requirements of subsequent wall surface plastering, tiling and paint brushing and the like, a leveling device needs to be used to pretreat the wall surface to ensure that the base layer flatness meets the standards, for example, a wall surface polishing device for building construction disclosed in patent publication No. CN114147561A.

[0003] Part of the interior of a building is designed to be a curved surface for the purpose of creating a landmark visual appearance, improving spatial comfort and optimizing functional layout, and part of the wall surface is designed to be a curved surface, however, when the traditional leveling treatment device is used for work on this kind of curved surface wall, since there is a lack of real-time curvature detection tool suitable for large curved surfaces, the device cannot rely on fixed reference to carry out polishing, and can only rely on the experience of the operator, and in this process, the problems of "local curvature being polished flat" or "overall curvature deviating from the design value" are likely to occur, which directly destroys the overall smoothness and design aesthetics of the curved surface wall, in addition, the polishing tool will inevitably be worn out after long-term use, and if the operator does not replace the worn tool in time, not only the tool cutting force will be reduced and the wall surface protrusions cannot be effectively removed, but also the uneven tool surface may react on the wall surface, resulting in new polishing defects and further affecting the wall surface leveling quality.

[0004] Therefore, a building wall surface leveling treatment device is proposed to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a building wall surface leveling treatment device to solve the above problems.

[0006] To achieve the above purpose, the following technical scheme is adopted: a building wall surface leveling treatment device, comprising a track assembly, a moving plate connected to the moving end of the track assembly, an angle motor and a controller connected to the upper side wall of the moving plate, an output end of the angle motor connected to a rotating plate, an upper side wall of the rotating plate connected to a polishing assembly, and further comprising:

[0007] A detection assembly is arranged in the interior of the polishing assembly for detecting the wear degree of the polishing element in the polishing assembly.

[0008] A dust collection assembly is arranged on the surface of the polishing assembly for adsorbing dust generated in the polishing process.

[0009] In the building wall leveling device, the track assembly comprises a plurality of track frames which are spliced together, one side of the track frame close to the wall is one of an arc surface or a straight surface, two bolt fastening plates are symmetrically and fixedly connected to the left and right outer walls of the track frame, two adjacent bolt fastening plates are fixed by bolts, one track seat is slidably arranged in the track frames, a motor mounting frame is fixedly connected to the right side wall of the track seat, a driving motor is fixedly connected to the lower side wall of the motor mounting frame, a driving gear is fixedly connected to the output end of the driving motor, a driving gear plate meshing with the driving gear is fixedly connected to the inner wall of one side of the track frame close to the driving gear, contact pulleys are fixedly connected to the left and right sides of the track seat, universal ball bearings are fixedly connected to the four corners of the upper and lower sides of the track seat, a traction seat is fixedly connected to the upper side wall of the track seat, and the upper end of the traction seat passes through the track frame and is fixedly connected to the lower side wall of the moving plate.

[0010] In the building wall leveling device, the polishing assembly comprises a lead screw linear module fixedly connected to the upper side wall of the rotating plate, a lifting plate is fixedly connected to the moving end of the lead screw linear module, a horizontal electric push rod is fixedly connected to the upper side wall of the lifting plate, a polishing frame is fixedly connected to the moving end of the horizontal electric push rod, rotating shafts are rotatably connected to the inner walls of the upper and lower sides of the polishing frame, the same polishing roller is connected to the opposite ends of the two rotating shafts through the connecting flanges, the polishing roller is composed of a plurality of polishing single shaft connection groups, a polishing motor is fixedly connected to the upper side wall of the polishing frame, the output end of the polishing motor passes through the polishing frame and is fixedly connected to the upper rotating shaft through the torsion sensor.

[0011] In the building wall leveling device, the detection assembly comprises a detection linear module fixedly connected to the inner wall of the polishing frame, a small electric push rod is connected to the moving end of the detection linear module, a detection box is connected to the moving end of the small electric push rod through the pressure sensor, a lifting block is connected to the upper inner wall of the detection box through the spring, a sliding plate is fixedly connected to the side wall of the lifting block close to the polishing roller, a sliding hole matched with the sliding plate is formed in the right side wall of the detection box, the end of the sliding plate away from the lifting block extends out of the sliding hole and is fixedly connected to the friction plate, an elastic rod is fixedly connected to the lower inner wall of the detection box, a trigger switch is fixedly connected to the upper end of the elastic rod, and the trigger switch is electrically connected to the controller.

[0012] In the building wall surface leveling treatment device, the dust suction assembly comprises a mounting cover fixedly connected to the upper side wall of the lifting plate, an air suction box fixedly connected to the upper side wall of the mounting cover, an air suction pump fixedly connected to the upper side wall of the air suction box, wherein the air inlet end of the air suction pump is communicated with the air suction box, and a filter element is arranged in the air suction box at the air inlet end of the air suction pump.

[0013] In the building wall surface leveling treatment device, the lower side wall of the polishing frame is fixedly connected with a vertical plate, the right side wall of the vertical plate is fixedly connected with a detection electric push rod, the moving end of the detection electric push rod is fixedly connected with a laser ranging module, and the laser ranging module is electrically connected with the controller.

[0014] In the building wall surface leveling treatment device, the right side wall of the rotating plate is fixedly connected with a bent rod, the right end of the bent rod is fixedly connected with a pressure sensor, the detection end of the pressure sensor is connected with a squeezing wheel, and the pressure sensor is electrically connected with the controller.

[0015] In the building wall surface leveling treatment device, the right side wall of the rotating plate is fixedly connected with two laser range finders which are symmetrically arranged on the front and back sides, and the two laser range finders are electrically connected with the controller.

[0016] Compared with the prior art, the building wall surface leveling treatment device has the following advantages:

[0017] 1. By arranging the track assembly which can be connected, the curvature of the track frame in the track assembly can be customized in advance and reused, so that the polishing assembly can always adhere to the wall surface when the wall surface leveling treatment device is used to polish the entire large curved wall surface, thereby ensuring the leveling effect of the curved wall surface.

[0018] 2. By arranging the polishing assembly, the wear degree of the polishing roller can be detected automatically during the polishing process of the wall surface leveling treatment device on the wall surface, so that the operator can be reminded to replace the worn polishing roller in time when the wear of the polishing roller is detected, thereby avoiding the problem that the use of the worn polishing roller will cause new polishing defects and further affect the wall surface leveling quality.

[0019] 3. By arranging the two laser range finders, the pressure sensor and the squeezing wheel, the polishing angle of the polishing roller is always perpendicular to the tangent of the curved wall surface during the polishing process of the wall surface leveling treatment device on the curved wall surface, the perpendicular angle can ensure that the cutting depth and range of adjacent polishing areas are uniform, and the "step mark" will not appear at the joint due to the angle deviation, so that the overall curved surface is smooth and coherent. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a building wall leveling device provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the dust collection component in a building wall leveling device provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the detection component in a building wall leveling device provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the detection box in a building wall leveling treatment device provided by the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the track frame in a building wall leveling device provided by the present invention;

[0025] Figure 6 This is a schematic diagram showing the connection relationship between the U-shaped pipe and the telescopic flexible hose in a building wall leveling device provided by the present invention;

[0026] Figure 7 This is a schematic diagram showing the placement relationship between the curved track assembly and the curved wall surface in a building wall leveling device provided by the present invention.

[0027] In the diagram: 1. Moving plate, 2. Angle motor, 3. Controller, 4. Rotating plate, 5. Track assembly, 51. Track frame, 52. Bolt fastening plate, 6. Track seat, 7. Motor mounting bracket, 8. Drive motor, 9. Drive gear, 10. Drive gear plate, 11. Contact pulley, 12. Universal ball bearing, 13. Traction seat, 14. Grinding assembly, 141. Lead screw linear module, 142. Lifting plate, 15. Horizontal electric push rod, 16. Grinding frame, 17. Rotating shaft, 18. Grinding roller, 19. Grinding motor, 20. Detection. Components, 201 Linear Detection Module, 202 Small Electric Push Rod, 21 Detection Box, 22 Lifting Block, 23 Sliding Plate, 24 Friction Plate, 25 Elastic Rod, 26 Trigger Switch, 27 Dust Collection Component, 271 Mounting Cover, 272 Dust Collection Box, 28 Air Pump, 29 Air Extraction Hood, 30 U-tube, 31 Telescopic Hose, 32 Vertical Plate, 33 Electric Detection Push Rod, 34 Laser Rangefinder Module, 35 Bend Rod, 36 Pressure Sensor, 37 Extrusion Wheel, 38 Laser Rangefinder. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] As Figures 1-7 shown in the figure, a kind of building wall surface leveling treatment device, including track assembly 5, track assembly 5 includes multiple track frames 51, multiple track frames 51 are spliced together, the side of track frame 51 close to wall is one of arc surface or straight surface, the outer wall of the left and right sides of track frame 51 is symmetrically fixedly connected with two bolt fastening plates 52, two adjacent bolt fastening plates 52 are fixed by bolt, the same track seat 6 is slidably arranged in multiple track frames 51, the right side wall of track seat 6 is fixedly connected with motor mounting bracket 7, the lower side wall of motor mounting bracket 7 is fixedly connected with driving motor 8, the output end of driving motor 8 is fixedly connected with driving gear 9, the inner wall of the side of multiple track frames 51 close to driving gear 9 is fixedly connected with the driving gear plate 10 meshing with driving gear 9, the left and right sides of track seat 6 four corners are all fixedly connected with contact pulley 11, the left and right sides of track seat 6 four corners are all fixedly connected with universal ball 12, the upper side wall of track seat 6 is fixedly connected with traction seat 13, the upper end of traction seat 13 passes through track frame 51, and is fixedly connected with the lower side wall of moving plate 1, track assembly 5 can be spliced according to the wall curvature, to facilitate polishing curved wall surface, the moving end of track assembly 5 is connected with moving plate 1, the upper side wall of moving plate 1 is connected with angle motor 2 and controller 3, the output end of angle motor 2 is connected with rotating plate 4, the upper side wall of rotating plate 4 is connected with polishing assembly 14, polishing assembly 14 includes fixedly connected on the upper side wall of rotating plate 4 screw straight line module 141, the moving end of screw straight line module 141 is fixedly connected with lifting plate 142, the upper side wall of lifting plate 142 is fixedly connected with horizontal electric push rod 15, the moving end of horizontal electric push rod 15 is fixedly connected with polishing frame 16, the upper and lower sides of polishing frame 16 inner wall are all rotatably connected with shaft 17, the opposite end of two shafts 17 is all connected with the same polishing roller 18 through connecting flange, polishing roller 18 is connected by a plurality of polishing single shaft, the right side wall of rotating plate 4 is symmetrically fixedly connected with two laser range finders 38, two laser range finders 38 are all electrically connected with controller 3, through the assembly, the tangent of polishing roller 18 and wall arc can be perpendicular, improve polishing quality, the upper side wall of polishing frame 16 is fixedly connected with polishing motor 19, the output end of polishing motor 19 passes through polishing frame 16, and is fixedly connected with the upper shaft 17 through torsion sensor, can polish uneven area of wall, further include:

[0030] The detection assembly 20 is arranged in the interior of the polishing assembly 14 and is used for detecting the wear degree of the polishing element in the interior of the polishing assembly 14. The detection assembly 20 comprises a detection linear module 201 fixedly connected to the inner wall of the polishing frame 16. The moving end of the detection linear module 201 is connected with a small electric push rod 202. The moving end of the small electric push rod 202 is connected with a detection box 21 through a pressure sensor. The upper inner wall of the detection box 21 is connected with a lifting block 22 through a spring. The side wall of the lifting block 22 close to the polishing roller 18 is fixedly connected with a sliding plate 23. The right side wall of the detection box 21 is provided with a sliding opening matched with the sliding plate 23. The end of the sliding plate 23 away from the lifting block 22 extends out of the sliding opening and is fixedly connected with a friction plate 24. The lower inner wall of the detection box 21 is fixedly connected with an elastic rod 25. The upper end of the elastic rod 25 is fixedly connected with a trigger switch 26. The trigger switch 26 is electrically connected with the controller 3. The wear degree of the polishing roller 18 can be detected. The right side wall of the rotating plate 4 is fixedly connected with a bent rod 35. The right end of the bent rod 35 is fixedly connected with a pressure sensor 36. The detection end of the pressure sensor 36 is connected with a squeezing wheel 37. The pressure sensor 36 is electrically connected with the controller 3. The placing angle of the polishing roller 18 is further determined through the assembly.

[0031] The dust collection assembly 27 is arranged on the surface of the polishing assembly 14 and is used for adsorbing the dust generated in the polishing process. The dust collection assembly 27 comprises a mounting cover 271 fixedly connected to the upper side wall of the lifting plate 142. The upper side wall of the mounting cover 271 is fixedly connected with a dust collection box 272. The upper side wall of the dust collection box 272 is fixedly connected with a suction pump 28. The air inlet end of the suction pump 28 is communicated with the dust collection box 272. The interior of the dust collection box 272 is provided with a filter element located at the air inlet end of the suction pump 28. The front and back sides of the polishing frame 16 are both fixedly connected with suction covers 29. The suction covers 29 are of hollow structure and are provided with a plurality of dust suction holes in the inner wall. The same U-shaped pipe 30 is fixedly and communicatively connected between the two suction covers 29. The same telescopic hose 31 is fixedly and communicatively connected between the dust collection box 272 and the U-shaped pipe 30. The dust polished down can be collected through the assembly.

[0032] The lower side wall of the polishing frame 16 is fixedly connected with a vertical plate 32. The right side wall of the vertical plate 32 is fixedly connected with a detection electric push rod 33. The moving end of the detection electric push rod 33 is fixedly connected with a laser ranging module 34. The laser ranging module 34 is electrically connected with the controller 3. The position of the uneven area of the wall surface can be automatically detected.

[0033] The operation principle of the present application is described as follows: the actual curvature of the wall surface is measured during construction. The matching specifications are selected from the prefabricated universal track frame 51. The complete track assembly 5 is spliced by the bolt fastening plate 52. When special curvature is encountered, a small amount of special track frame 51 can be customized for use with the universal version to balance the cost and adaptability. The track assembly 5 is placed at a certain position along the wall surface (the operator can determine the position by the laser ranging module 34 and the trigger switch 26).Figure 7 The auxiliary support in the drawing makes the distance between the track frame 51 and the corresponding contact point on the wall surface consistent, and then the operator places the track seat 6 into the track frame 51, and the driving motor 8 on the surface of the track seat 6 drives the driving gear 9 to rotate, and through the meshing of the driving gear 9 and the driving gear plate 10, the movement of the track seat 6 along the track frame 51 can be controlled.

[0034] During the movement of the track seat 6, the moving plate 1 is moved together with the track seat 6 through the traction seat 13, and the moving plate 1 moves the rotating plate 4 and the polishing assembly 14 together through the angle motor 2. During the movement of the polishing assembly 14, the controller 3 controls the detection electric push rod 33 to work, and the detection electric push rod 33 drives the laser ranging module 34 to move to the set position close to the wall surface, and the controller 3 also controls the laser ranging module 34 to work, and the laser ranging module 34 emits a laser beam to the wall surface to measure the reflection distance in real time. When there is a protrusion on the wall surface, the distance between the protrusion and the laser ranging module 34 will be smaller than the distance in the flat area. The internal system of the controller 3 automatically determines the position of the protrusion and records it by comparing the distance difference. After the controller 3 detects the position of the protrusion on the wall surface, the driving motor 8 stops working, so that the laser ranging module 34 is located directly below the protrusion. Then the controller 3 drives the two laser range finders 38 on both sides of the rotating plate 4 to work, and by analyzing the electric signals fed back by the two laser range finders 38, the angle motor 2 is controlled to rotate by an appropriate angle. The angle motor 2 drives the polishing assembly 14 and the two laser range finders 38 to rotate together through the rotating plate 4, until the measurement distances fed back by the two laser range finders 38 are the same. At this time, the polishing assembly 14 is perpendicular to the tangent of the arc-shaped wall surface (since the protrusion on the wall surface is located above the two laser range finders 38, the protrusion on the wall surface does not affect the work of the laser range finders 38). When the polishing assembly 14 is perpendicular to the tangent of the arc-shaped wall surface through the rotating plate 4, the pressure sensor 36 and the extrusion wheel 37 are in contact with the wall surface through the bending rod 35. Since the track assembly 5 and the wall surface maintain a set position, when the pressure sensor 36 and the extrusion wheel 37 are in contact with the wall surface through the bending rod 35, the extrusion force between the extrusion wheel 37 and the wall surface is detected by the pressure sensor 36. When the pressure sensor 36 and the extrusion wheel 37 are perpendicular to the tangent of the arc-shaped wall surface, the pressure sensor 36 detects an extrusion force of 10N. The pressure sensor 36 feeds back a set electric signal to the controller 3. Through the double feedback of the pressure sensor 36 and the two laser range finders 38, it is further ensured that the polishing assembly 14 is perpendicular to the tangent of the arc-shaped wall surface.

[0035] Then, the controller 3 drives the polishing roller 18 to move up to the set position through the lead screw linear module 141, so that the polishing roller 18 is at the same height as the wall protrusion. Then, the controller 3 controls the transverse electric push rod 15 and the polishing motor 19 to work at the same time. The transverse electric push rod 15 drives the polishing roller 18 to move towards the wall protrusion. The polishing motor 19 drives the polishing roller 18 to rotate. The polishing roller 18 polishes the wall protrusion. At the same time, the track assembly 5 drives the polishing roller 18 to move back and forth along the wall, so as to expand the working range of the polishing roller 18. During the working of the track assembly 5, the controller 3 controls the angle motor 2 to work according to the electric signals fed back by the two laser range finders 38 and the pressure sensor 36, so as to ensure that the polishing roller 18 is always perpendicular to the wall, and the polishing quality is ensured.

[0036] When the polishing roller 18 is worn out due to long-term work, the grinding force of the polishing roller 18 will decrease. The polishing motor 19 is connected with the polishing roller 18 through a torque sensor. When the polishing roller 18 is worn out, the torque sensor detects that the torque decreases. When the controller 3 detects that the torque continuously decreases by 70%-80% of the reference value through the torque sensor, the controller 3 controls the polishing work to stop, and controls the small electric push rod 202 to work. The small electric push rod 202 drives the detection box 21 to move through the pressure sensor. The detection box 21 drives the friction plate 24 to contact the polishing roller 18. When the controller 3 detects that the extrusion force between the friction plate 24 and the polishing roller 18 reaches 20N through the pressure sensor, the controller 3 controls the small electric push rod 202 to stop working, so that the friction plate 24 and the polishing roller 18 maintain an extrusion force of 20N. Then, the controller 3 controls the detection linear module 201 to work. The detection linear module 201 drives the detection box 21 to move down through the small electric push rod 202. The detection box 21 drives the lifting block 22, the sliding plate 23 and the friction plate 24 to move down together through the spring. Since the surface roughness of the polishing roller 18 decreases after being worn out, the friction between the polishing roller 18 and the friction plate 24 decreases. Under the action of the spring force, the decreased friction can only drive the friction plate 24 and the lifting block 22 to move upwards for a short distance. At this time, the lifting block 22 does not separate from the trigger switch 26, which indicates that the polishing roller 18 is seriously worn out at this detection section. The trigger switch 26 continuously feeds the electric signal to the controller 3. The controller 3 records the worn section of the polishing roller 18 (the controller 3 can determine which section of the polishing roller 18 is detected through the stroke of the detection linear module 201), and informs the operator through the internal wireless communication module. The operator can replace the worn part of the polishing roller 18 (the polishing roller 18 is composed of multiple polishing single shafts, and each single shaft can be independently disassembled, so as to replace the corresponding single shaft according to the worn local area).

[0037] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A building wall surface leveling treatment device, comprising a track assembly (5), a moving plate (1) connected to the moving end of the track assembly (5), an angle motor (2) and a controller (3) connected to the upper side wall of the moving plate (1), an output end of the angle motor (2) connected with a rotating plate (4), an upper side wall of the rotating plate (4) connected with a polishing assembly (14), characterized in that, Also include: Detection assembly (20), the detection assembly (20) includes fixedly connected inside the polishing assembly (14) detection linear module (201), the moving end of the detection linear module (201) is connected with small electric push rod (202), the moving end of the small electric push rod (202) is connected with detection box (21) through pressure sensor, the upper side inner wall of the detection box (21) is connected with lifting block (22) through spring, the side wall of the lifting block (22) is fixedly connected with sliding plate (23), the right side wall of the detection box (21) is provided with sliding port matched with sliding plate (23), the end of the sliding plate (23) away from the lifting block (22) extends from the sliding port, and is fixedly connected with friction plate (24), the lower side inner wall of the detection box (21) is fixedly connected with elastic rod (25), the upper end of the elastic rod (25) is fixedly connected with trigger switch (26), the trigger switch (26) is electrically connected with the controller (3), for detecting the wear degree of the polishing element inside the polishing assembly (14); Dust collection assembly (27) is arranged on the surface of the polishing assembly (14), which is used for adsorbing dust generated in the polishing process.

2. A device for leveling a building wall surface according to claim 1, wherein The track assembly (5) comprises a plurality of track frames (51), the plurality of track frames (51) are spliced together, one side of the track frame (51) close to the wall surface is one of an arc surface or a straight surface, both left and right outer walls of the track frame (51) are fixedly connected with two bolt fastening plates (52) which are symmetrically arranged in front and back, adjacent two bolt fastening plates (52) are fixed by bolts, the same track seat (6) is slidably arranged in the plurality of track frames (51), the right side wall of the track seat (6) is fixedly connected with a motor mounting rack (7), the lower side wall of the motor mounting rack (7) is fixedly connected with a driving motor (8), the output end of the driving motor (8) is fixedly connected with a driving gear (9), the inner walls of the plurality of track frames (51) close to one side of the driving gear (9) are fixedly connected with driving gear plates (10) which are meshed with the driving gear (9), the left and right sides of the track seat (6) are fixedly connected with contact pulleys (11) at four corners, the upper and lower sides of the track seat (6) are fixedly connected with universal ball bearings (12) at four corners, the upper side wall of the track seat (6) is fixedly connected with a traction seat (13), the upper end of the traction seat (13) penetrates through the track frame (51), and is fixedly connected with the lower side wall of the moving plate (1).

3. A device for leveling a building wall surface according to claim 1, wherein The polishing assembly (14) comprises a lead screw linear module (141) fixedly connected to the upper side wall of the rotating plate (4), a lifting plate (142) fixedly connected to the moving end of the lead screw linear module (141), a transverse electric push rod (15) fixedly connected to the upper side wall of the lifting plate (142), a polishing frame (16) fixedly connected to the moving end of the transverse electric push rod (15), a detection linear module (201) connected to the inner wall of the polishing frame (16), a rotating shaft (17) rotationally connected to the upper and lower inner walls of the polishing frame (16), a polishing roller (18) connected to the connecting flanges at the opposite ends of the two rotating shafts (17), the polishing roller (18) being composed of a plurality of polishing single shaft connections, a polishing motor (19) fixedly connected to the upper side wall of the polishing frame (16), and the output end of the polishing motor (19) penetrating through the polishing frame (16) and being fixedly connected to the upper rotating shaft (17) through a torsion sensor.

4. A device for finishing a building wall according to claim 3, characterized in that The dust suction assembly (27) comprises a mounting cover (271) fixedly connected to the upper side wall of the lifting plate (142), a dust suction box (272) fixedly connected to the upper side wall of the mounting cover (271), and a suction pump (28) fixedly connected to the upper side wall of the dust suction box (272), wherein the air inlet end of the suction pump (28) is in communication with the dust suction box (272), the dust suction box (272) is internally provided with a filter element located at the air inlet end of the suction pump (28), the polishing frame (16) is fixedly connected with a suction cover (29) on the front and rear sides, the suction cover (29) has a hollow structure and is provided with a plurality of suction holes in the inner wall, and the same U-shaped tube (30) is fixedly and communicatively connected between the two suction covers (29), and the same flexible hose (31) is fixedly and communicatively connected between the dust suction box (272) and the U-shaped tube (30).

5. A device for leveling a building wall surface according to claim 3, wherein The lower side wall of the polishing frame (16) is fixedly connected with a vertical plate (32), the right side wall of the vertical plate (32) is fixedly connected with a detection electric push rod (33), the moving end of the detection electric push rod (33) is fixedly connected with a laser ranging module (34), and the laser ranging module (34) is electrically connected with the controller (3).

6. A device for leveling a building wall surface according to claim 1, wherein The right side wall of the rotating plate (4) is fixedly connected with a bent rod (35), the right end of the bent rod (35) is fixedly connected with a pressure sensor (36), the detection end of the pressure sensor (36) is connected with a squeezing wheel (37), and the pressure sensor (36) is electrically connected with the controller (3).

7. A device for leveling a building wall surface according to claim 1, wherein The right side wall of the rotating plate (4) is fixedly connected with two laser range finders (38) which are symmetrically arranged front and rear, and the two laser range finders (38) are electrically connected with the controller (3).

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