Metal pipe inner wall polishing equipment and process thereof

Abstract

The invention relates to the technical field of pipeline inner wall polishing equipment, and discloses metal pipe inner wall polishing equipment and a process thereof.The metal pipe inner wall polishing equipment comprises an equipment body, a hinged chassis is installed in the equipment body, the front end and the rear end of the hinged chassis are each rotationally connected with two tires, and the top of the equipment body is fixedly connected with a driving chamber; a control center is fixedly connected to the surface of the front end of the driving chamber, an electric rotary table is fixedly connected to the surface of one end of the driving chamber, a polishing assembly is arranged at the end, away from the equipment body, of the electric rotary table, and an adsorption assembly is fixedly connected to the bottom of the equipment body and comprises a negative pressure generator fixedly connected to the other end of the interior of the adsorption assembly. And the output end of the other end of the negative pressure generator is fixedly connected with a conveying bin, the front end and the rear end of the conveying bin are both fixedly connected with connecting pipes, and the device has the advantages that the polishing quality of the device on the inner wall of the metal pipeline is improved, and a user can use the device conveniently.

Description

Technical Field

[0001] This invention relates to the technical field of pipe inner wall polishing equipment, specifically to a metal pipe inner wall polishing equipment and its process. Background Technology

[0002] Pipe inner wall polishing equipment is a special equipment used to smooth the inner wall of pipes. It can effectively remove impurities such as oxide scale, rust, and welding slag from the inner wall, thereby improving the smoothness, cleanliness, and performance of the inner wall of the pipe. For some large metal pipes, pipe polishing robots are usually used to polish and grind their inner walls.

[0003] Publication No. CN118386049A discloses an integrated robot for polishing the inner wall of pipes adapted to different pipe diameters, including a walking mechanism, a rotating mechanism, a polishing and grinding mechanism, a cleaning and chip removal mechanism, and a cleaning and recycling system. The walking mechanism is mounted on a frame and is used to drive the frame to move. The rotating mechanism is mounted on the frame and is used to drive the main shaft to rotate. The polishing and grinding mechanism and the cleaning and chip removal mechanism are sequentially installed on the main shaft according to the moving direction of the frame. The polishing and grinding mechanism is used to polish and grind the inner wall of the pipe. The cleaning and chip removal mechanism is used to remove residues from the inner wall of the pipe. The cleaning and recycling system is used to cool the polishing and grinding mechanism and the cleaning and chip removal mechanism respectively, and to recycle the residues.

[0004] However, in practical use, when this device and existing equipment polish large-diameter metal pipes, intelligent polishing robots are usually used. During the process of the intelligent polishing robot entering the pipe, it continuously polishes the inner wall of the metal pipe, leaving polishing debris inside. When the robot's tires suddenly run over debris, welding slag, or protrusions on the pipe's inner wall, the robot's body is instantly lifted up. Since the body height remains constant, this causes the entire robot to rotate around its polishing axis (the pipe's centerline), resulting in rollover and tilting. Some existing technologies add cooling oil during the polishing process to wash away the debris; however, this method causes the robot's tires to suddenly enter the metal pipe's inner wall, which is coated with cooling oil, causing a sharp drop in tire traction. When one tire slips while the other maintains grip, the strong driving force pushes the robot around its center of gravity, also causing tilting. This tilting results in increased positive pressure on one side of the robot's tires or tracks and decreased pressure on the other. Insufficient lateral adhesion makes the robot prone to slippage. Once the tires slip, the robot's driving force is severely lost, preventing it from moving forward or even causing it to spin in place. This prevents the robot from continuing the polishing process, affecting not only the polishing efficiency of the intelligent polishing robot inside the metal pipe but also causing it to get stuck inside the pipe, impacting the polishing quality. A common approach in existing equipment is to replace the tires of the intelligent polishing robot with pneumatic tires, which provide better adaptive contact surfaces and cushioning. Simultaneously, the chassis of the intelligent polishing robot is replaced with an articulated or rocker-arm chassis. This structure allows all tires to maintain contact on the uneven inner wall of the pipe, maximizing overall adhesion. However, these improvements, aimed at increasing the adhesion between the tires and the inner wall of the metal pipe, offer little benefit in addressing the aforementioned problems. The intelligent polishing robot still faces the risk of tilting inside the metal pipe, resulting in low actual polishing quality. There is significant room for improvement in the polishing quality of existing equipment for the inner walls of metal pipes. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a metal pipe inner wall polishing device and its process, which has advantages such as improving the polishing quality of the device on the inner wall of metal pipes and being easy for users to use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a metal pipe inner wall polishing device and its process, comprising: a main body, a drive chamber, a control center, an electric turntable, a rotating shaft, a polishing assembly, an adjustment chamber, a linear drive assembly, an output rod, a polishing plate, a first gas delivery chamber, a second gas delivery chamber, a delivery pipe, a top block, a nozzle, a fixed plate, an adsorption assembly, a negative pressure generator, a delivery chamber, a connecting pipe, a delivery chamber, a connecting chamber, a rotary drive assembly, a first movable shaft, a baffle, a first movable wheel, a second movable shaft, a second movable wheel, a movable belt, a meshing wheel, an adsorption chamber, an adsorption head, a first receiving rod, a first meshing plate, a second receiving rod, a second meshing plate, a first sealing skirt, and a second sealing skirt.

[0007] The positions and connections of the above structures are as follows: A metal pipe inner wall polishing device includes a main body, an articulated chassis installed inside the main body, two tires rotatably connected to the front and rear ends of the articulated chassis, a drive chamber fixedly connected to the top of the main body, a control center fixedly connected to the front surface of the drive chamber, an electric turntable fixedly connected to one end surface of the drive chamber, a polishing component provided at the end of the electric turntable away from the main body, and an adsorption component fixedly connected to the bottom of the main body.

[0008] Preferably, the adsorption assembly includes a negative pressure generator, which is fixedly connected to the other end of the adsorption assembly. A conveying chamber is fixedly connected to the output end of the other end of the negative pressure generator. Connecting pipes are fixedly connected to the front and rear ends of the conveying chamber, and the connecting pipes pass through and extend to the outside of the adsorption assembly. A conveying chamber is fixedly connected to the bottom of the adsorption assembly. An adsorption chamber is fixedly connected inside the conveying chamber. The adsorption chamber passes through and extends into the interior of the adsorption assembly, and the adsorption chamber is fixedly connected to the input end of the negative pressure generator. A first sealing skirt and a second sealing skirt are provided inside the conveying chamber. The inner wall of the first sealing skirt is slidably connected to the bottom surface of the adsorption chamber, and the outer wall of the second sealing skirt is slidably connected to the inner wall of the conveying chamber. The bottom of the conveying chamber is not sealed.

[0009] Preferably, multiple first receiving rods and second receiving rods are fixedly connected to both ends of the inner wall of the top side of the conveying chamber. A first meshing plate is sleeved inside the first receiving rod, and a second meshing plate is sleeved inside the second receiving rod. An adsorption head is fixedly connected to the bottom of the adsorption chamber. The shape and size of the first sealing skirt are smaller than that of the second sealing skirt. The outer surfaces of multiple second meshing plates are fixedly connected to the outer surface of the top side of the first sealing skirt, and the outer surfaces of multiple first meshing plates are fixedly connected to the inner wall of the second sealing skirt. The material of the first sealing skirt and the second sealing skirt is set as high polymer elastic rubber.

[0010] Preferably, two connecting chambers are fixedly connected to one end surface of the conveying chamber. A rotary drive assembly is fixedly connected to the inner wall of one end of the connecting chamber. The rotary drive assembly is configured as a drive motor. A first movable shaft is fixedly connected to the output end of the other end of the rotary drive assembly. The first movable shaft passes through the connecting chamber and extends into the interior of the conveying chamber. Baffles are rotatably connected to the outer surfaces of the front and rear ends of the extension of the first movable shaft. A second movable shaft is rotatably connected between the bottoms of the two baffles. Two first movable wheels and a second movable wheel are fixedly connected to the outer surfaces of the first movable shaft and the second movable shaft, respectively. A movable belt is movably connected to the outer surfaces of the first movable wheel and the second movable wheel. A meshing wheel is fixedly connected to the end of the second movable shaft near the first meshing plate and the second meshing plate. The meshing wheel is rotatably connected to the first meshing plate and the second meshing plate.

[0011] Preferably, a rotating shaft is fixedly connected to one output end of the electric turntable. A second air supply chamber is provided on the outer surface of the rotating shaft and is fixedly connected to one end surface of the electric turntable. The other ends of the two connecting pipes are respectively fixedly connected to the front and rear ends of the second air supply chamber. The second air supply chamber and the rotating shaft pass through the polishing assembly and extend into the interior of the polishing assembly. The extended portion of the rotating shaft is rotatably connected to the inner wall of one end of the polishing assembly. Multiple adjustment chambers are fixedly connected inside the polishing assembly. A linear drive assembly is fixedly connected inside the adjustment chamber. The linear drive assembly is configured as an electric push rod. An output rod is fixedly connected to the output end of the linear drive assembly away from the center of the polishing assembly. The output rod passes through the adjustment chamber and extends to the outside of the polishing assembly. A polishing plate is fixedly connected to the extended portion of the output rod.

[0012] Preferably, a first air supply chamber is fixedly connected to the inner wall of one end of the polishing assembly, and the first air supply chamber is fixedly connected to a second air supply chamber. Multiple delivery pipes are fixedly connected to the outer surface of the first air supply chamber. The delivery pipes are specifically flexible pipes. The other end of the delivery pipes passes through the polishing assembly and extends to the outside of the polishing assembly. A top block is fixedly connected to the extended part of the delivery pipe. A nozzle is fixedly connected to the end of the top block away from the delivery pipe. Fixing plates are fixedly connected between the multiple nozzles and the multiple polishing plates.

[0013] Preferably, the control center includes a central processing unit, a memory, an input / output interface, an expansion interface, a power supply, and a communication interface, and the central processing unit, the memory, the input / output interface, the expansion interface, the power supply, and the communication interface are electrically connected to each other.

[0014] A metal tube inner wall polishing process includes:

[0015] After adjustment, the main body of the equipment is placed on the inner wall of the metal pipe by a robotic arm or human hand. The adsorption component is activated by the control center to perform vacuum adsorption on the center of the inner wall of the metal pipe. The two tires support the main body of the equipment on the inner wall of the metal pipe.

[0016] Polishing involves using the control center to activate the main body of the equipment and the polishing components. Once activated, the main body of the equipment moves the polishing and adsorption components via four tires. The polishing components then grind and polish the inner wall of the metal pipe.

[0017] Further adjustments are made when the metal pipe to be polished is a welded pipe. The weld seam inside the pipe is recessed and does not fit the inner wall of the pipe. In this case, the linear drive component is activated by the control center to adjust the polishing range of the polishing component so that it can fit closely to the weld seam surface for polishing. After the weld seam is polished, the polishing component is reset and the polishing process of the remaining parts of the metal pipe continues.

[0018] Beneficial effects

[0019] 1. The metal pipe inner wall polishing equipment and its process, by activating the adsorption component, enables the device to provide certain support and fixation for the main body of the equipment, thereby reducing the tendency of the intelligent polishing robot to tilt inside the metal pipe, improving the polishing quality of the device and making it easier for users to use.

[0020] 2. The metal pipe inner wall polishing equipment and its process enable the device to continuously polish metal pipes without stopping for extended periods by activating the adsorption components, thereby improving the polishing efficiency and operating time of the device and making it more convenient for users.

[0021] 3. The metal pipe inner wall polishing equipment and its process, by opening the polishing components, enable the device to polish and grind the weld seam of the welded pipe, thereby improving the polishing and grinding quality of the device and making it easier for users to use. Attached Figure Description

[0022] Figure 1 This is a top view schematic diagram of the metal tube inner wall polishing equipment and its process according to the present invention;

[0023] Figure 2 This is a side view of the working structure of a metal tube inner wall polishing device and its process according to the present invention;

[0024] Figure 3 This is a front view schematic diagram of the metal tube inner wall polishing equipment and its process according to the present invention;

[0025] Figure 4 This is a schematic diagram of the internal side structure of a metal tube inner wall polishing device and its process according to the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of a metal tube inner wall polishing device and its process polishing components according to the present invention.

[0027] Figure 6 This is a schematic diagram of the internal structure of a metal tube inner wall polishing device and its process adsorption component according to the present invention.

[0028] Figure 7 This is a schematic diagram of the internal structure of a metal tube inner wall polishing device and its process connection chamber according to the present invention.

[0029] Figure 8 This is a schematic diagram of the bottom structure of the process conveying chamber of a metal tube inner wall polishing device according to the present invention;

[0030] Figure 9 This is a schematic diagram of the internal structure of a metal tube inner wall polishing device and its process conveying chamber according to the present invention.

[0031] Figure 10 This is a schematic diagram of the rotary drive component structure of a metal tube inner wall polishing device and its process according to the present invention.

[0032] Figure 11 This is a schematic diagram of the metal tube inner wall polishing equipment and its process meshing wheel structure according to the present invention.

[0033] In the diagram: 1. Main body of the equipment; 10. Drive chamber; 11. Control center; 12. Electric turntable; 120. Rotating shaft; 2. Polishing assembly; 20. Adjustment chamber; 21. Linear drive assembly; 210. Output rod; 211. Polishing plate; 22. First air delivery chamber; 220. Second air delivery chamber; 221. Conveying pipe; 222. Top block; 223. Nozzle; 23. Fixing plate; 3. Adsorption assembly; 30. Negative pressure generator; 300. Conveying chamber; 301. Connecting pipe; 31. Conveying chamber; 310. Connecting compartment; 311. Rotary drive assembly; 312. First movable shaft; 313. Baffle; 314. First movable wheel; 315. Second movable shaft; 316. Second movable wheel; 317. Movable belt; 318. Engaging wheel; 32. Adsorption chamber; 320. Adsorption head; 33. First receiving rod; 330. First engaging plate; 34. Second receiving rod; 340. Second engaging plate; 35. First sealing skirt; 36. Second sealing skirt. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example

[0036] Please see Figures 1 to 4 A metal pipe inner wall polishing device includes a main body 1, an articulated chassis installed inside the main body 1, two tires rotatably connected to the front and rear ends of the articulated chassis, a drive chamber 10 fixedly connected to the top of the main body 1, a control center 11 fixedly connected to the front surface of the drive chamber 10, an electric turntable 12 fixedly connected to one end surface of the drive chamber 10, a polishing component 2 provided at the end of the electric turntable 12 away from the main body 1, and an adsorption component 3 fixedly connected to the bottom of the main body 1.

[0037] In practical applications, this device and existing equipment typically use intelligent polishing robots to grind and polish large-diameter metal pipes. During the process of the intelligent polishing robot entering the pipe, it continuously grinds the inner wall of the metal pipe, leaving debris inside. When the robot's tires suddenly run over debris, welding slag, or protrusions on the pipe's inner wall, the robot's body is instantly lifted up. Since the body height remains constant, this causes the entire robot to rotate around its pipe axis, resulting in rollover and tilting. Some existing technologies add cooling oil during the polishing process to wash away the debris; however, this method causes the robot's tires to suddenly enter the metal pipe's inner wall, which is coated with cooling oil, causing a sharp drop in tire traction. When one tire slips while the other maintains grip, the strong driving force propels the robot to rotate around its center of gravity, also causing tilting. This tilting can lead to the tires or tracks on one side of the robot slipping. As the positive pressure increases on one side and decreases on the other, the side with less positive pressure has insufficient adhesion and is prone to slipping. Once the tire slips, the robot's driving force is severely lost, making it unable to move forward or even spinning in place. This prevents the robot from continuing the polishing process, affecting not only the polishing efficiency of the intelligent polishing robot inside the metal pipe but also causing the robot to get stuck inside the pipe and unable to continue polishing, thus affecting the polishing quality. A common approach in existing equipment is to replace the tires of the intelligent polishing robot with pneumatic tires, which provide a better adaptive contact surface and cushioning. At the same time, the chassis of the intelligent polishing robot is replaced with an articulated or rocker-arm chassis. This structure allows all tires to maintain contact on the uneven inner wall of the pipe, maximizing the adhesion. However, the above improvements are aimed at increasing the adhesion between the tires and the inner wall of the metal pipe, and have little effect on solving the above problems. The intelligent polishing robot still has the risk of tilting inside the metal pipe.

[0038] This invention discloses a metal pipe inner wall polishing device and its process. The main body 1 of the device is placed on the inner wall of the metal pipe by a robotic arm or a human hand. The adsorption component 3 is activated by the control center 11 to perform vacuum adsorption on the center of the inner wall of the metal pipe. Two tires support the main body 1 on the inner wall of the metal pipe. The control center 11 activates the main body 1 and the polishing component 2. The main body 1 moves, and the four tires drive the polishing component 2 and the adsorption component 3 to move. The polishing component 2 rotates to polish the inner wall of the metal pipe. During this process, the adsorption device always has an adsorption capacity on the inside of the metal pipe, which provides a certain degree of support and fixation for the main body 1, thereby preventing the main body 1 from tilting inside the metal pipe. By preventing the main body 1 from tilting inside the metal pipe, the slippage of the tires on the inner wall of the main body 1 is reduced, improving the polishing quality of the device and making it easier for users to use.

[0039] Please see Figures 1 to 11 Further as described above, the adsorption assembly 3 includes a negative pressure generator 30, which is fixedly connected to the other end of the adsorption assembly 3. A conveying chamber 300 is fixedly connected to the output end of the other end of the negative pressure generator 30. A connecting pipe 301 is fixedly connected to both the front and rear ends of the conveying chamber 300, and the connecting pipe 301 passes through and extends to the outside of the adsorption assembly 3. A conveying chamber 31 is fixedly connected to the bottom of the adsorption assembly 3. An adsorption chamber 32 is fixedly connected inside the conveying chamber 31. The adsorption chamber 32 passes through and extends into the interior of the adsorption assembly 3, and the adsorption chamber 32 is fixedly connected to the input end of the negative pressure generator 30. A first sealing skirt 35 and a second sealing skirt 36 are provided inside the conveying chamber 31. The inner wall of the first sealing skirt 35 is slidably connected to the bottom surface of the adsorption chamber 32, and the outer wall of the second sealing skirt 36 is slidably connected to the inner wall of the conveying chamber 31. The bottom of the conveying chamber 31 is not sealed.

[0040] In the above steps, when the main body 1 of the equipment enters the inner wall of the metal pipe, the four tires provide some support for the main body 1. Initially, the second sealing skirt 36 at the bottom is in contact with the inner wall of the metal pipe, while the first sealing skirt 35 is not in contact with the metal pipe. The second sealing skirt 36 supports the main body 1 from the bottom. The negative pressure generator 30 is turned on by the control center 11. The negative pressure generator 30, when turned on, adsorbs the bottom inner wall of the metal pipe through the adsorption chamber 32 and the adsorption head 320. The second sealing skirt 36 blocks the gap between the adsorption head 320 and the metal pipe, forming a closed space between the adsorption head 320 and the metal pipe. At this time, the adsorption head 320 can generate suction normally, which restricts the main body 1 of the equipment and the metal pipe. The adsorbed air is transported to the conveying chamber 31 through the output end of the negative pressure generator 30. Then, the conveying chamber 31 transports this adsorbed air through the two connecting pipes 301, thus completing the step of restricting the main body 1 to the inner wall of the metal pipe. Then, the main body 1 of the equipment is turned on by the control center 11. When the device body 1 is in contact with the inner wall of the metal pipe, only the rotation force and speed of the tires need to be adjusted to move the device body 1, ensuring normal operation of the device. At the same time, since the adsorption component 3 is in close contact with the inner wall of the metal pipe, when the adsorption component 3 is slightly misaligned, the second sealing skirt 36 will create a gap with the inner wall of the metal pipe, reducing the adsorption capacity at the adsorption component 3. At this time, the device body 1 can be reset at the inner wall of the metal pipe due to the center of gravity, so that the device body 1 is always in the same axis as the metal pipe. It should be noted that when the second sealing skirt 36 adsorbs onto the inner wall of the pipe, it will drive the tires on both sides of the device body 1 to press down on the inner wall of the pipe, increasing the pressure between the tires and the inner wall of the pipe, which in turn increases the friction between the tires and the inner wall of the pipe, making it easier for the tires to drive the device body 1 to move. In addition, the polished inner wall of the pipe is relatively smooth, and the frictional resistance between it and the second sealing skirt 36 is small, so it will not interfere with the movement of the device body 1. At the same time, the material used for the second sealing skirt 36 is the same as that used for the first sealing skirt 35, which is high polymer elastic rubber.

[0041] Please see Figures 7 to 11 Furthermore, in the above description, multiple first receiving rods 33 and second receiving rods 34 are fixedly connected to both ends of the inner wall of the top side of the conveying chamber 31. A first meshing plate 330 is sleeved inside the first receiving rod 33, and a second meshing plate 340 is sleeved inside the second receiving rod 34. An adsorption head 320 is fixedly connected to the bottom of the adsorption chamber 32. The shape and size of the first sealing skirt 35 are smaller than the shape and size of the second sealing skirt 36. The outer surfaces of multiple second meshing plates 340 are fixedly connected to the outer surface of the top side of the first sealing skirt 35, and the outer surfaces of multiple first meshing plates 330 are fixedly connected to the inner wall of the second sealing skirt 36. The material of the first sealing skirt 35 and the second sealing skirt 36 is set as high polymer elastic rubber.

[0042] In the above steps, the second sealing skirt 36 preferentially contacts the inner wall of the metal pipe. When the main body of the equipment 1 runs for a period of time, the second sealing skirt 36 may wear out due to frequent friction with the metal pipe, resulting in a gap at the bottom of the second sealing skirt 36. The gap between the adsorption head 320 and the metal pipe is no longer sealed, and the adsorption force of the adsorption component 3 on the main body of the equipment 1 and the inner wall of the metal pipe decreases. The tire may still slip. The main body of the equipment 1 is equipped with a displacement sensor. When the body of the main body of the equipment 1 is no longer restricted to the bottom side of the inner wall of the metal pipe, one end of the tires at both ends slips while the other end continues to maintain grip. The body gradually tilts, the pressure at one end increases and the pressure at the other end decreases. The tire at the end with reduced pressure may cause the main body of the equipment 1 to move slowly or even spin without moving forward due to insufficient driving force. The displacement sensor will detect the abnormal movement of the main body of the equipment 1 and transmit the abnormal signal to the external computer. The computer will issue a warning signal to prompt the staff to handle the situation. At this point, the operator first controls the main body 1 of the equipment to stop moving. Then, through the rotation drive assembly 311, the first movable shaft 312, the second movable shaft 315, and the meshing wheel 318 in the main body 1, multiple first meshing plates 330 are moved upward and stored in the first receiving rod 33, and multiple second meshing plates 340 are moved downward. The upward movement of multiple first meshing plates 330 causes the second sealing skirt 36 to move upward and no longer contact the metal pipe. The downward movement of multiple second meshing plates 340 causes the first sealing skirt 35 to move downward. At this time, the first sealing skirt 35 contacts the metal pipe. The gap between the adsorption head 320 and the inner wall of the bottom side of the metal pipe is sealed by the first sealing skirt 35. The adsorption head 320 can maintain its original adsorption capacity to restrict the inner wall of the main body 1 and the metal pipe. After polishing, the second sealing skirt 36 can be replaced. This allows the device to continuously polish the metal pipe without stopping for a long time, further improving the polishing efficiency and operating time of the device, and making it convenient for users.

[0043] Please see Figures 7 to 11Further, as described above, two connecting chambers 310 are fixedly connected to one end surface of the conveying chamber 31. A rotary drive assembly 311 is fixedly connected to the inner wall of one end of the connecting chamber 310. The rotary drive assembly 311 is configured as a drive motor. A first movable shaft 312 is fixedly connected to the output end of the other end of the rotary drive assembly 311. The first movable shaft 312 passes through the connecting chamber 310 and extends into the interior of the conveying chamber 31. Baffles 313 are rotatably connected to the outer surfaces of the front and rear ends of the extended portion of the first movable shaft 312. A second movable shaft 315 is rotatably connected between the bottom of the plates 313. Two first movable wheels 314 and two second movable wheels 316 are fixedly connected to the outer surfaces of the first movable shaft 312 and the second movable shaft 315, respectively. A movable belt 317 is movably connected to the outer surfaces of the first movable wheel 314 and the second movable wheel 316. A meshing wheel 318 is fixedly connected to one end of the second movable shaft 315 near the first meshing plate 330 and the second meshing plate 340. The meshing wheel 318 is rotatably connected to the first meshing plate 330 and the second meshing plate 340.

[0044] In the above steps, when the second sealing skirt 36 wears down, causing the gap between the adsorption component 3 and the inner wall of the metal pipe to no longer seal, and it is necessary to change the positions of the first sealing skirt 35 and the second sealing skirt 36, the control center 11 activates two rotary drive components 311. The activation of the rotary drive components 311 drives the first movable shaft 312 to rotate. The rotation of the first movable shaft 312 drives the first movable wheel 314 to rotate. The rotation of the first movable wheel 314, through the movable belt 317, drives the second movable wheel 316 and the meshing wheel 318 to rotate. The rotation of the meshing wheel 318 causes the first meshing plate 330 and the second meshing plate 340 to generate relative movement. Figure 11 As shown in the figure, the meshing wheel 318 on the left rotates clockwise, and the meshing wheel 318 on the right rotates counterclockwise. At this time, the two first meshing plates 330 move upward to move the second sealing skirt 36, and the two second meshing plates 340 move downward to move the first sealing skirt 35. This completes the change of position of the first sealing skirt 35 and the second sealing skirt 36. At this time, the first sealing skirt 35 can replace the position of the second sealing skirt 36 to continue to seal the gap between the adsorption component 3 and the metal pipe. The device does not need to be stopped for timely maintenance, further extending the device's operating time. This allows the device to continuously polish the metal pipe without stopping for a long time, further improving the device's polishing efficiency and operating time, making it convenient for users.

[0045] Please see Figures 1 to 6Further, in the above description, a rotating shaft 120 is fixedly connected to one output end of the electric turntable 12. A second air supply chamber 220 is provided on the outer surface of the rotating shaft 120 and is fixedly connected to one end surface of the electric turntable 12. The other ends of the two connecting pipes 301 are respectively fixedly connected to the front end and the rear end of the second air supply chamber 220. The second air supply chamber 220 and the rotating shaft 120 pass through the polishing assembly 2 and extend into the interior of the polishing assembly 2. The extended portion of the rotating shaft 120 is rotatably connected to the inner wall of one end of the polishing assembly 2. A plurality of adjustment chambers 20 are fixedly connected inside the polishing assembly 2. A linear drive assembly 21 is fixedly connected inside the adjustment chamber 20. The linear drive assembly 21 is configured as an electric push rod. An output rod 210 is fixedly connected to the output end of the linear drive assembly 21 away from the center of the polishing assembly 2. The output rod 210 passes through the adjustment chamber 20 and extends to the outside of the polishing assembly 2. A polishing plate 211 is fixedly connected to the extended portion of the output rod 210.

[0046] In the above steps, the rotation of polishing component 2 drives multiple polishing plates 211 to rotate and polish the inner wall of the metal pipe. When the metal pipe to be polished is a welded pipe, and the polishing component 2 moves to the weld seam, the weld seam inside the welded pipe is usually recessed from the inner wall of the metal pipe and does not fit with the polishing plate 211 (flat is the ideal state, convex is the fault state, and the faulty welded pipe needs to be re-fixed and welded, which is the existing technology and will not be described in detail here). At this time, multiple straight lines can be manually activated using the control center 11. The drive assembly 21, the linear drive assembly 21, is activated to push out and move the output rod 210. The movement of the output rod 210 drives the polishing plate 211 to move until the polishing plate 211 is in close contact with the weld surface. At this time, the electric turntable 12 continues to drive the polishing assembly 2 to rotate so that the device can grind and polish the weld surface. After the polishing of the weld is completed, the polishing assembly 2 is reset so that the polishing process of the remaining parts of the metal pipe can continue. Thus, the device can polish and grind the weld of the welded pipe, improve the polishing quality of the device, and make it easier for users to use.

[0047] Please see Figures 2 to 5 Furthermore, in the above description, a first air supply chamber 22 is fixedly connected to the inner wall of one end of the polishing component 2, and the first air supply chamber 22 is fixedly connected to the second air supply chamber 220. A plurality of conveying pipes 221 are fixedly connected to the outer surface of the first air supply chamber 22. The conveying pipes 221 are specifically soft pipes. The other end of the conveying pipes 221 passes through the polishing component 2 and extends to the outside of the polishing component 2. A top block 222 is fixedly connected to the extension of the conveying pipes 221. A nozzle 223 is fixedly connected to the end of the top block 222 away from the conveying pipes 221. A fixing plate 23 is fixedly connected between the plurality of nozzles 223 and the plurality of polishing plates 211.

[0048] In the above steps, the air inside the conveying chamber 300 is conveyed to two connecting pipes 301, and then to the second air supply chamber 220. The second air supply chamber 220 conveys the air to the first air supply chamber 22, and then to the nozzle 223 through multiple conveying pipes 221. The nozzle 223 sprays the air out, and as the polishing assembly 2 rotates, the air is sprayed onto the polishing surface of the metal inner wall. The air inside the nozzle 223 can be adjusted to spray forward at an angle. At this time, when the polishing assembly 2 polishes the inner wall of the metal pipe, the air can be blown forward at an angle towards the contact surface between the metal pipe and the polishing assembly 2, blowing the polishing debris towards the contact surface. Figure 3 On the left side shown, to prevent debris from remaining on the inner wall of the metal pipe and being absorbed along with the air during the absorption process of the adsorption head 320, which would cause blockage inside the adsorption head 320 and reduce the adsorption capacity of the adsorption component 3, the setting of the fixing plate 23 and the replacement of the conveying pipe 221 with a soft pipe allow the nozzle 223 to move along with the polishing plate 211. This avoids the situation where the gap between the nozzle 223 and the inner wall of the weld is too large during the weld grinding and polishing process, and the air force cannot be concentrated on the polishing surface, thereby improving the polishing quality of the device and making it easier for users to use.

[0049] Please see Figures 1 to 6 Furthermore, as described above, the control center 11 includes a central processing unit, a memory, an input / output interface, an expansion interface, a power supply, and a communication interface, and the central processing unit, the memory, the input / output interface, the expansion interface, the power supply, and the communication interface are electrically connected to each other.

[0050] The control center 11 is used to control the normal start and stop of various components inside the main body of the equipment 1, so as to ensure the normal operation of the device.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal tube inner wall polishing device, comprising a device body (1), characterized in that: The device body (1) is equipped with an articulated chassis inside. Two tires are rotatably connected to the front and rear ends of the articulated chassis. A drive chamber (10) is fixedly connected to the top of the device body (1). A control center (11) is fixedly connected to the front surface of the drive chamber (10). An electric turntable (12) is fixedly connected to one end of the drive chamber (10). A polishing component (2) is provided at the end of the electric turntable (12) away from the device body (1). An adsorption component (3) is fixedly connected to the bottom of the device body (1).

2. The metal tube inner wall polishing equipment according to claim 1, characterized in that: The adsorption assembly (3) includes a negative pressure generator (30), which is fixedly connected to the other end of the adsorption assembly (3). A conveying chamber (300) is fixedly connected to the output end of the other end of the negative pressure generator (30). A connecting pipe (301) is fixedly connected to both the front and rear ends of the conveying chamber (300), and the connecting pipe (301) passes through and extends to the outside of the adsorption assembly (3). A conveying chamber (31) is fixedly connected to the bottom of the adsorption assembly (3). An adsorption unit is fixedly connected inside the conveying chamber (31). The adsorption chamber (32) extends through and into the interior of the adsorption assembly (3), and the adsorption chamber (32) is fixedly connected to the input end of the negative pressure generator (30). The interior of the conveying chamber (31) is provided with a first sealing skirt (35) and a second sealing skirt (36). The inner wall of the first sealing skirt (35) is slidably connected to the bottom surface of the adsorption chamber (32), and the outer wall of the second sealing skirt (36) is slidably connected to the inner wall of the conveying chamber (31). The bottom of the conveying chamber (31) is not sealed.

3. The metal tube inner wall polishing equipment according to claim 2, characterized in that: Multiple first receiving rods (33) and second receiving rods (34) are fixedly connected to both ends of the top inner wall of the conveying chamber (31). A first meshing plate (330) is sleeved inside the first receiving rod (33), and a second meshing plate (340) is sleeved inside the second receiving rod (34). An adsorption head (320) is fixedly connected to the bottom of the adsorption chamber (32). The shape and size of the first sealing skirt (35) are smaller than that of the second sealing skirt (36). The outer surfaces of multiple second meshing plates (340) are fixedly connected to the outer surface of the top side of the first sealing skirt (35), and the outer surfaces of multiple first meshing plates (330) are fixedly connected to the inner wall of the second sealing skirt (36). The material of the first sealing skirt (35) and the second sealing skirt (36) is high polymer elastic rubber.

4. The metal tube inner wall polishing equipment according to claim 3, characterized in that: Two connecting chambers (310) are fixedly connected to one end surface of the conveying chamber (31). A rotary drive assembly (311) is fixedly connected to the inner wall of one end of the connecting chamber (310). The rotary drive assembly (311) is configured as a drive motor. A first movable shaft (312) is fixedly connected to the output end of the other end of the rotary drive assembly (311). The first movable shaft (312) passes through the connecting chamber (310) and extends into the interior of the conveying chamber (31). Baffles (313) are rotatably connected to the outer surfaces of the front and rear ends of the extended portion of the first movable shaft (312). The bottom of the two baffles (313) A second movable shaft (315) is rotatably connected between the first movable shaft (312) and the second movable shaft (315). Two first movable wheels (314) and two second movable wheels (316) are fixedly connected to the outer surfaces of the first movable wheel (314) and the second movable wheel (316). A movable belt (317) is movably connected to the outer surfaces of the first movable wheel (314) and the second movable wheel (316). A meshing wheel (318) is fixedly connected to one end of the second movable shaft (315) near the first meshing plate (330) and the second meshing plate (340). The meshing wheel (318) is rotatably connected to the first meshing plate (330) and the second meshing plate (340).

5. A metal tube inner wall polishing device according to claim 2, characterized in that: A rotating shaft (120) is fixedly connected to one output end of the electric turntable (12). A second air supply chamber (220) is provided on the outer surface of the rotating shaft (120) and is fixedly connected to one end surface of the electric turntable (12). The other ends of the two connecting pipes (301) are respectively fixedly connected to the front end and rear end of the second air supply chamber (220). The second air supply chamber (220) and the rotating shaft (120) penetrate the polishing assembly (2) and extend into the interior of the polishing assembly (2). The extended portion of the rotating shaft (120) is rotatably connected. A plurality of adjustment chambers (20) are fixedly connected to the inner wall of one end of the polishing assembly (2). A linear drive assembly (21) is fixedly connected inside the adjustment chamber (20). The linear drive assembly (21) is configured as an electric push rod. An output rod (210) is fixedly connected to the output end of the linear drive assembly (21) away from the center of the polishing assembly (2). The output rod (210) passes through the adjustment chamber (20) and extends to the outside of the polishing assembly (2). A polishing plate (211) is fixedly connected to the extension of the output rod (210).

6. The metal tube inner wall polishing equipment according to claim 5, characterized in that: The polishing assembly (2) has a first air supply chamber (22) fixedly connected to the inner wall of one end, and the first air supply chamber (22) is fixedly connected to the second air supply chamber (220). Multiple delivery pipes (221) are fixedly connected to the outer surface of the first air supply chamber (22). The delivery pipes (221) are specifically soft pipes. The other end of the delivery pipes (221) passes through the polishing assembly (2) and extends to the outside of the polishing assembly (2). A top block (222) is fixedly connected to the extension of the delivery pipes (221). A nozzle (223) is fixedly connected to the end of the top block (222) away from the delivery pipes (221). A fixing plate (23) is fixedly connected between the multiple nozzles (223) and the multiple polishing plates (211).

7. The metal tube inner wall polishing equipment according to claim 1, characterized in that: The control center (11) includes a central processing unit, a memory, an input / output interface, an expansion interface, a power supply, and a communication interface, and the central processing unit, the memory, the input / output interface, the expansion interface, the power supply, and the communication interface are electrically connected to each other.

8. A metal tube inner wall polishing process, employing any one of the metal tube inner wall polishing devices according to claims 1-7, comprising: Adjust the entry, place the main body of the equipment (1) on the inner wall of the metal pipe by a robotic arm or human hand, and use the control center (11) to turn on the adsorption component (3) to perform vacuum adsorption on the center of the inner wall of the metal pipe. The two tires support the main body of the equipment (1) on the inner wall of the metal pipe. Polishing: The control center (11) opens the main body (1) and polishing components (2). The main body (1) opens and moves the polishing components (2) and adsorption components (3) through four tires. The polishing components (2) polish the inner wall of the metal pipe. Further adjustments are made. When the metal pipe to be polished is a welded pipe, the weld seam inside the pipe is recessed and does not fit the inner wall of the metal pipe. At this time, the control center (11) is used to turn on the linear drive component (21) to adjust the polishing range of the polishing component (2) so that it can be polished close to the weld seam surface. After the weld seam is polished, the polishing component (2) is reset and the polishing process of the remaining parts of the metal pipe is continued.

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