Wall painting machine

Abstract

The utility model relates to the technical field of wall painting, and discloses a wall painting machine which comprises a paint tank, the top of the paint tank is fixedly connected with a fixing frame, the top of the fixing frame is fixedly connected with a motor, and the output end of the motor is fixedly connected with a vertical rotating rod. A driving bevel gear is fixedly connected to the position, located above the coating tank, of the middle of the vertical rotating rod, a vertical sleeve column is slidably connected to the outer side of the vertical rotating rod, and a plurality of stirring rods are fixedly connected to the outer portion of the vertical sleeve column. According to the stirring device disclosed by the utility model, a motor drives a vertical rotating rod and a vertical sleeve column to rotate and a driving bevel gear to rotate, further drives a driven bevel gear meshed with the driving bevel gear to rotate, then drives a rectangular transmission column and a vertical sliding column to move through the vertical rotating column, and further drives the vertical sleeve column and a stirring rod to work through a transverse connecting column; and automatic blending of the coating is achieved, the stirring efficiency of the stirring rod on the coating is improved, and mixing of the coating is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of wall painting, in particular to a wall painting machine. Background Art

[0002] A paint machine is a highly efficient painting equipment, and its application range covers many fields such as architectural decoration, home improvement, and engineering construction. Its working principle is based on the compressed air or hydraulic pressure to suck the paint out of the paint bucket and spray it onto the wall, ceiling, floor and other surfaces through a spray gun to achieve fast and uniform painting. This machine can spray paint at a stable speed and pressure during the painting process, ensuring the uniformity and quality of the coating, while saving manpower and material costs.

[0003] The efficiency of the painting machine is one of its most significant advantages. Compared with traditional manual painting, the painting machine can complete the painting work at a faster speed, greatly improving the painting efficiency. For large areas of walls, ceilings or floors, the use of a painting machine can save a lot of time and human resources, shorten the project cycle, and improve the progress of the project.

[0004] Secondly, the paint machine has the advantage of uniform coating. By spraying paint evenly with a spray gun, the paint machine can ensure the consistency and quality of the coating, avoiding the problems of uneven coating or missed coating that may occur in manual painting. This uniformity not only improves the beauty of the painting effect, but also enhances the durability and protection of the coating.

[0005] In addition, the paint machine can also save material costs. Since the paint machine can more accurately control the amount of paint sprayed, avoiding waste and overflow, it can reduce the amount of paint used and reduce the cost of painting. This is especially important for large-scale engineering projects, which can effectively control the total cost of the project and improve economic benefits.

[0006] In addition to improving painting efficiency and quality, the paint machine can also reduce the labor intensity of workers. Traditional manual painting requires workers to stand, bend their knees and raise their hands for a long time, which can easily cause physical fatigue and discomfort. The operation of the paint machine is relatively easy. Workers only need to operate the machine and control the spraying direction, which reduces the intensity of physical labor and improves work comfort and safety.

[0007] As a painting equipment that is efficient, uniform, saves materials and reduces labor intensity, the paint machine has become an indispensable tool in the fields of architectural decoration, home improvement, engineering construction, etc. With the advancement of technology and the continuous growth of market demand, the performance and functions of the paint machine are also constantly improving and perfecting, providing a more convenient and efficient solution for painting work in all walks of life.

[0008] In the prior art, when painting a wall, the paint must first be mixed in proportion, usually by workers manually stirring and mixing. Materials that are not fully stirred may cause uneven coating, color difference or inconsistent texture, and the stirring work is often time-consuming and laborious due to manual stirring. Therefore, a wall painting machine is proposed to solve the above problems. Summary of the invention

[0009] In order to make up for the above shortcomings, the utility model provides a wall painting machine, aiming to improve the problem of low efficiency of manual stirring in the prior art.

[0010] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0011] A wall painting machine comprises a paint tank, the top of the paint tank is fixedly connected to a fixing frame, the top of the fixing frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a vertical rotating rod, the middle part of the vertical rotating rod and located above the paint tank is fixedly connected to an active bevel gear, the outer side of the vertical rotating rod is slidably connected to a vertical sleeve column, the outer side of the vertical sleeve column is fixedly connected to a plurality of stirring rods, one end of the active bevel gear is meshedly connected to a driven bevel gear, one end of the driven bevel gear is fixedly connected to a rotating rod, the rotating rod passes through the interior of the fixing frame and is rotatably connected to the fixing frame through a bearing, the rotating rod is fixedly connected to a vertical rotating column at one end away from the driven bevel gear, the vertical rotating column is rotatably connected to a rectangular transmission column at the bottom of one end of the rotating rod, the rectangular transmission column is rotatably connected to a vertical sliding column at one end away from the vertical rotating column, the vertical sliding column is fixedly connected to a horizontal connecting column near one end of the vertical sleeve column, and a circular collar is rotatably connected to the middle part of the vertical sleeve column and located above the stirring rod. The cam is fixedly connected to the outer surface of the circular collar at one end away from the vertical sliding column, and a booster pump is fixedly connected to the left side of the paint tank, an input end of the booster pump is fixedly connected to a liquid extraction pipe, an end of the liquid extraction pipe is fixedly connected to the outside of the paint tank at one end away from the booster pump, an output end of the booster pump is fixedly connected to a conduit, an end of the conduit is fixedly connected to a connecting sleeve 1 away from the booster pump, a connecting sleeve 2 is slidably connected inside the connecting sleeve 1, a fixing component is arranged outside the connecting sleeve 1, a delivery pipe is fixedly connected to the left side of the connecting sleeve 2, an end of the delivery pipe is fixedly connected to a hollow mounting frame away from the connecting sleeve 2, a bracket is fixedly connected to the left side of the hollow mounting frame, a hollow rotating shaft is rotatably connected to the middle part of the bracket, a plurality of through holes 1 are provided on the outside of the hollow rotating shaft, a roller is fixedly connected to the outside of the hollow rotating shaft, a plurality of through holes 2 are provided on the outside of the roller, a cotton rope is arranged outside the through hole 2, a fixing seat is fixedly connected to the rear side of the bracket, and a telescopic rod is fixedly connected to the bottom of the bracket.

[0012] Furthermore, the fixing assembly includes a shell, the outside of the shell is fixedly connected to an outer wall of the connecting sleeve, the inside of the shell is slidably connected to a pull rod, one side of the outside of the pull rod is fixedly connected to a baffle, and the other side of the outside of the pull rod is sleeved with a spring.

[0013] Furthermore, a handle is fixedly connected to the bottom of the telescopic rod, an end of the pull rod away from the connecting sleeve is fixedly connected to an adjustment handle, a feed port is fixedly connected to the top edge of the paint tank, and a ball valve is arranged in the middle of the conduit.

[0014] Furthermore, the vertical sliding column passes through the interior of the paint tank and is slidably connected to the paint tank.

[0015] Furthermore, the right end of the hollow rotating shaft passes through the bracket and is connected to the hollow mounting frame.

[0016] Furthermore, the outside of the baffle is slidably connected to the inside of the shell.

[0017] Furthermore, one end of the spring is fixedly connected to the middle of the baffle, and the other end of the spring is fixedly connected to the inner wall of the shell.

[0018] Furthermore, one end of the pull rod passes through the first connecting sleeve and is inserted into the second outer wall of the connecting sleeve.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, the vertical rotating rod and the vertical sleeve column are driven to rotate by the motor, and the rotation of the active bevel gear further drives the rotation of the driven bevel gear meshing therewith, and then the rectangular transmission column and the vertical sliding column are driven to move through the vertical rotating column, and then the vertical sleeve column and the stirring rod are driven to work through the horizontal connecting column, so as to realize the automatic blending of the coating, improve the stirring efficiency of the stirring rod on the coating, and promote the mixing of the coating;

[0021] 2. In the utility model, the baffle plate is driven to move synchronously by pulling the pull rod, thereby squeezing the spring until the pull rod is completely separated from the interior of the connecting sleeve, thereby realizing rapid disassembly of the relevant components of the conveying pipe, facilitating transportation during use, simplifying the operation process of the equipment, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional schematic diagram of a wall painting machine proposed by the utility model;

[0023] Figure 2 This is a structural schematic diagram of a stirring rod of a wall painting machine proposed by the utility model;

[0024] Figure 3This is a structural schematic diagram of a hollow rotating shaft of a wall painting machine proposed by the utility model;

[0025] Figure 4 This is a structural schematic diagram of a pull rod of a wall painting machine proposed by the utility model;

[0026] Legend:

[0027] 1. Paint can; 2. Fixed frame; 3. Motor; 4. Vertical rotating rod; 5. Active bevel gear; 6. Vertical sleeve column; 7. Stirring rod; 8. Rotating rod; 9. Driven bevel gear; 10. Vertical rotating column; 11. Rectangular transmission column; 12. Vertical sliding column; 13. Horizontal connecting column; 14. Booster pump; 15. Extraction pipe; 16. Conduit; 17. Connecting sleeve 1; 18. Connecting sleeve 2; 19. Delivery pipe; 20. Hollow mounting frame; 21. Bracket; 22. Hollow rotating shaft; 23. Through hole 1; 24. Roller; 25. Through hole 2; 26. Cotton rope; 27. Fixed seat; 28. Telescopic rod; 29. ​​Handle; 30. Shell; 31. Pull rod; 32. Baffle; 33. Spring; 34. Adjusting handle; 35. Feed inlet; 36. Ball valve; 37. Circular collar. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1 - Figure 3The utility model provides an embodiment: a wall painting machine, including a paint tank 1, a fixing frame 2 is fixedly connected to the top of the paint tank 1, a motor 3 is fixedly connected to the top of the fixing frame 2, a vertical rotating rod 4 is fixedly connected to the output end of the motor 3, a driving bevel gear 5 is fixedly connected to the middle of the vertical rotating rod 4 and located above the paint tank 1, a vertical sleeve column 6 is slidably connected to the outside of the vertical rotating rod 4, a plurality of stirring rods 7 are fixedly connected to the outside of the vertical sleeve column 6, one end of the driving bevel gear 5 is meshedly connected to a driven bevel gear 9, one end of the driven bevel gear 9 is fixedly connected to a rotating rod 8, the rotating rod 8 passes through the interior of the fixing frame 2 and is connected to the fixing frame 2 through an axis The rotating rod 8 is rotatably connected to the driven bevel gear 9 at one end, and the vertical rotating column 10 is rotatably connected to the bottom of the vertical rotating column 10 away from the rotating rod 8. The rectangular transmission column 11 is rotatably connected to the vertical sliding column 12 at one end away from the vertical rotating column 10. The vertical sliding column 12 is fixedly connected to a transverse connecting column 13 at one end close to the vertical sleeve column 6. A circular collar 37 is rotatably connected to the middle of the vertical sleeve column 6 and above the stirring rod 7. The end of the transverse connecting column 13 away from the vertical sliding column 12 is fixedly connected to the outside of the circular collar 37. A booster pump 14 is fixedly connected to the left side of the paint tank 1. The booster pump 14 outputs The inlet end is fixedly connected with a liquid extraction pipe 15, and the end of the liquid extraction pipe 15 away from the booster pump 14 is fixedly connected to the outside of the paint tank 1, the output end of the booster pump 14 is fixedly connected with a conduit 16, and the end of the conduit 16 away from the booster pump 14 is fixedly connected with a connecting sleeve 17, and the connecting sleeve 17 is slidably connected with a connecting sleeve 2 18 inside, and a fixed component is arranged outside the connecting sleeve 17, and the left side of the connecting sleeve 2 18 is fixedly connected with a delivery pipe 19, and the end of the delivery pipe 19 away from the connecting sleeve 2 18 is fixedly connected with a hollow mounting frame 20, and the left side of the hollow mounting frame 20 is fixedly connected with a bracket 21, and the middle part of the bracket 21 is rotatably connected with a hollow rotating shaft 22, and the hollow A plurality of through holes 23 are provided on the outside of the rotating shaft 22, a roller 24 is fixedly connected to the outside of the hollow rotating shaft 22, a plurality of through holes 25 are provided on the outside of the roller 24, a cotton rope 26 is arranged on the outside of the through holes 25, a fixing seat 27 is fixedly connected to the rear side of the bracket 21, a telescopic rod 28 is fixedly connected to the bottom of the bracket 21, a handle 29 is fixedly connected to the bottom of the telescopic rod 28, a feed port 35 is fixedly connected to the top edge of the paint tank 1, a ball valve 36 is arranged in the middle of the conduit 16, the vertical sliding column 12 passes through the interior of the paint tank 1 and is slidably connected to the paint tank 1, and the right end of the hollow rotating shaft 22 passes through the bracket 21 and is connected to the hollow mounting frame 20.

[0030] Specifically, the paint tank 1 is used as a container for storing paint to ensure a stable supply of paint during the painting process. The fixed frame 2 is used to support and connect the motor 3 and other related components. The vertical rotating rod 4 connects the motor 3 and the stirring component to transmit the rotational power of the motor 3 to the stirring rod 7 to achieve the stirring function of the paint. The active bevel gear 5 realizes the vertical conversion of power by meshing with the driven bevel gear 9, so that the stirring component can operate efficiently. The vertical sleeve column 6 supports the stirring rod 7 and allows it to move or adjust to a certain extent in the vertical direction. The stirring rod 7 is located inside the paint tank 1, and the paint is stirred by rotation to ensure that the paint is mixed evenly without precipitation or stratification. The rotating rod 8 connects the driven bevel gear 9 and the vertical rotating column 10 to transmit the rotational power so that the driven bevel gear 9 can move or adjust the paint. The driven vertical rotating column 10 rotates, and the driven bevel gear 9 cooperates with the driving bevel gear 5 to realize the transmission of power and the conversion of direction, ensuring the smooth progress of the stirring and conveying process. The vertical rotating column 10 is connected to the driven bevel gear 9 through the rotating rod 8, and its rotation is transmitted to the stirring rod 7 through the rectangular transmission column 11 to realize the stirring of the paint. The rectangular transmission column 11 connects the vertical rotating column 10 and the vertical sliding column 12 to ensure the stable transmission of power and allow flexible movement in the vertical direction. The vertical sliding column 12 is driven by the rectangular transmission column 11 to slide vertically to ensure that the stirring rod 7 can penetrate into the paint tank 1 to achieve all-round stirring. The horizontal connecting column 13 connects the vertical sliding column 12 and the circular collar 37 to ensure the stability and stirring efficiency of the stirring rod 7. The booster pump 14 is responsible for providing pressure to extract the paint from the paint tank 1 and transport it to the roller 24 through the delivery pipe 19 for brushing. The liquid extraction pipe 15 extends into the paint tank 1. Through the action of the booster pump 14, the paint is extracted and sent to the delivery system. The conduit 16 connects the booster pump 14 and the delivery pipe 19 to ensure that the paint can be smoothly transported from the paint tank 1 to the roller 24. The connecting sleeve 17 is used to connect the conduit 16 and the fixing component. The connecting sleeve 2 18 is used in conjunction with the connecting sleeve 17 to enhance the stability and sealing of the connection. The delivery pipe 19 is responsible for transporting the paint from the paint tank 1 to the roller 24 to ensure the continuous supply of paint. The hollow mounting frame 20 is used to connect the hollow shaft 22 and communicate with it. The bracket 21 is used to install the roller 24 and other related components. The hollow shaft 22 is used to connect the roller 24. The through hole 1 23 is located on the hollow shaft 22, allowing the paint to flow from the delivery pipe 19 into the roller 24. The through hole 25 is distributed on the surface of the roller 24, so that the paint can penetrate into the cotton rope 26 outside the roller 24, which is convenient for brushing. The cotton rope 26 serves as a brushing medium, absorbs the paint and smears it on the wall as the roller 24 rotates. The fixing seat 27 is used to fix the bracket 21 and the telescopic rod 28 to ensure the stability and position of the equipment. The telescopic rod 28 allows workers to adjust the distance between the roller 24 and the wall according to the brushing needs to improve the brushing effect. The handle 29 is convenient for workers to hold and operate the equipment, which improves the convenience of brushing work. The feed port 35 is set on the top of the paint tank 1, which is convenient for workers to add paint to the paint tank 1.The ball valve 36 controls the flow of the paint and adjusts the paint supply speed as needed.

[0031] Reference Figure 1 and Figure 4 The fixing component includes a shell 30, the outside of the shell 30 is fixedly connected to the outer wall of the connecting sleeve 17, the inside of the shell 30 is slidably connected with a pull rod 31, one side of the outside of the pull rod 31 is fixedly connected to a baffle 32, and the other side of the outside of the pull rod 31 is sleeved with a spring 33, the end of the pull rod 31 away from the connecting sleeve 17 is fixedly connected to an adjusting handle 34, the outside of the baffle 32 is slidably connected to the inside of the shell 30, one end of the spring 33 is fixedly connected to the middle of the baffle 32, and the other end of the spring 33 is fixedly connected to the inner wall of the shell 30, one end of the pull rod 31 passes through the connecting sleeve 17 and is inserted into the outer wall of the connecting sleeve 2 18.

[0032] Specifically, the housing 30 is used to install the fixing components, the pull rod 31 is used to facilitate workers to pull and separate the connecting sleeve 17 and the connecting sleeve 2 18 when removing the conveying pipe 19, and the baffle 32 cooperates with the pull rod 31 when removing the conveying pipe 19, and separates the connecting sleeve by squeezing the spring 33. The spring 33 provides elastic force during the disassembly process, so that the baffle 32 can return to its original position smoothly, and the adjustment handle 34 is convenient for workers to operate.

[0033] Working principle: when the paint needs to be mixed and stirred, the worker pours the mixed paint from the feed port 35, and the operation of the driving motor 3 enables the vertical rotating rod 4 to rotate. The rotation of the vertical rotating rod 4 enables the vertical sleeve column 6 on the outside of the vertical rotating rod 4 to rotate along with the vertical rotating rod 4. The rotation of the vertical rotating rod 4 is connected through the meshing of the active bevel gear 5 and the driven bevel gear 9, so that the vertical rotating column 10 can rotate with the rotating rod 8 as the center of the circle. The rotation of the vertical rotating column 10 enables the vertical sliding column 12 to reciprocate vertically inside the paint tank 1 through the rectangular transmission column 11, so that the circular sleeve 37 can drive the vertical sleeve column 6 to perform reciprocating lifting motion on the outside of the vertical rotating rod 4, so that the vertical sleeve column 6 can perform reciprocating lifting motion while rotating, thereby promoting the mixing of the paint. After the mixing is completed, the booster pump 14 is started and the ball valve 36 is opened. Under the action of the pressure pump 14, the mixed paint is extracted through the liquid extraction tube 15 and transported to the delivery tube 19, and then transported to the inside of the hollow mounting frame 20 through the delivery tube 19. Since the hollow mounting frame 20 and the hollow rotating shaft 22 are connected, the paint will flow into the hollow rotating shaft 22, and flow into the inside of the roller 24 through the through hole 1 23 on its surface, and then flow into the cotton rope 26 on the surface of the roller 24 through the through hole 25 on the surface of the roller 24. When the cotton rope 26 absorbs enough paint, the booster pump 14 is turned off and the ball valve 36 is closed to start the painting work. In order to facilitate the transportation of the equipment, the equipment needs to be disassembled. At this time, the pull rod 31 is pulled outward, and the baffle 32 is driven to squeeze the spring 33 until the pull rod 31 is completely separated from the connecting sleeve 17 to complete the disassembly of the delivery tube 19, and then the screws on the fixing seat 27 are turned. When the screws are separated from the fixing seat 27, the entire disassembly of the bracket 21 is completed.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wall painting machine, comprising a paint tank (1), characterized in that: The top of the paint tank (1) is fixedly connected to a fixing frame (2), the top of the fixing frame (2) is fixedly connected to a motor (3), the output end of the motor (3) is fixedly connected to a vertical rotating rod (4), the middle of the vertical rotating rod (4) and located above the paint tank (1) is fixedly connected to an active bevel gear (5), the outer side of the vertical rotating rod (4) is slidably connected to a vertical sleeve column (6), the outer side of the vertical sleeve column (6) is fixedly connected to a plurality of stirring rods (7), one end of the active bevel gear (5) is meshingly connected to a driven bevel gear (9), one end of the driven bevel gear (9) is fixedly connected to a rotating rod (8), the rotating rod (8) passes through the interior of the fixing frame (2) and is connected to the fixing frame ( 2) is rotatably connected through a bearing, the end of the rotating rod (8) away from the driven bevel gear (9) is fixedly connected to a vertical rotating column (10), the bottom of the end of the vertical rotating column (10) away from the rotating rod (8) is rotatably connected to a rectangular transmission column (11), the end of the rectangular transmission column (11) away from the vertical rotating column (10) is rotatably connected to a vertical sliding column (12), the end of the vertical sliding column (12) close to the vertical sleeve column (6) is fixedly connected to a transverse connecting column (13), the middle of the vertical sleeve column (6) and located above the stirring rod (7) is rotatably connected to a circular collar (37), the end of the transverse connecting column (13) away from the vertical sliding column (12) is fixedly connected to the vertical sleeve column (6) and located above the stirring rod (7), The coating tank (1) is fixedly connected to the outside of the circular collar (37); the left side of the coating tank (1) is fixedly connected to a booster pump (14); the input end of the booster pump (14) is fixedly connected to a liquid extraction pipe (15); the end of the liquid extraction pipe (15) away from the booster pump (14) is fixedly connected to the outside of the coating tank (1); the output end of the booster pump (14) is fixedly connected to a conduit (16); the end of the conduit (16) away from the booster pump (14) is fixedly connected to a connecting sleeve (17); the inside of the connecting sleeve (17) is slidably connected to a connecting sleeve (2); a fixing component is arranged outside the connecting sleeve (17); the left side of the connecting sleeve (2) is fixedly connected to a delivery pipe ( 19), the conveying pipe (19) is fixedly connected to a hollow mounting frame (20) at one end away from the connecting sleeve (18), a bracket (21) is fixedly connected to the left side of the hollow mounting frame (20), a hollow rotating shaft (22) is rotatably connected to the middle of the bracket (21), a plurality of through holes (23) are provided on the outside of the hollow rotating shaft (22), a roller (24) is fixedly connected to the outside of the hollow rotating shaft (22), a plurality of through holes (25) are provided on the outside of the roller (24), a cotton rope (26) is arranged on the outside of the through hole (25), a fixing seat (27) is fixedly connected to the rear side of the bracket (21), and a telescopic rod (28) is fixedly connected to the bottom of the bracket (21).

2. A wall painting machine according to claim 1, characterized in that: The fixing assembly comprises a shell (30), the outside of the shell (30) is fixedly connected to the outer wall of the connecting sleeve (17), the inside of the shell (30) is slidably connected to a pull rod (31), one side of the outside of the pull rod (31) is fixedly connected to a baffle (32), and the other side of the outside of the pull rod (31) is sleeved with a spring (33).

3. A wall painting machine according to claim 2, characterized in that: The bottom of the telescopic rod (28) is fixedly connected to a handle (29), the end of the pull rod (31) away from the connecting sleeve (17) is fixedly connected to an adjustment handle (34), the top edge of the paint tank (1) is fixedly connected to a feed port (35), and a ball valve (36) is provided in the middle of the conduit (16).

4. A wall painting machine according to claim 1, characterized in that: The vertical sliding column (12) penetrates the interior of the paint tank (1) and is slidably connected to the paint tank (1).

5. A wall painting machine according to claim 1, characterized in that: The right end of the hollow rotating shaft (22) passes through the bracket (21) and is connected to the hollow mounting frame (20).

6. A wall painting machine according to claim 2, characterized in that: The outside of the baffle (32) is slidably connected to the inside of the housing (30).

7. A wall painting machine according to claim 2, characterized in that: One end of the spring (33) is fixedly connected to the middle of the baffle (32), and the other end of the spring (33) is fixedly connected to the inner wall of the outer shell (30).

8. A wall painting machine according to claim 2, characterized in that: One end of the pull rod (31) passes through the first connecting sleeve (17) and is inserted into the outer wall of the second connecting sleeve (18).

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