Pipe surface cleaning device

Abstract

The utility model relates to the field of pipe surface processing and cleaning, in particular to a pipe surface cleaning device. The pipe surface cleaning device comprises a frame; the jacking assembly is arranged on the frame, and a clamping area used for clamping a to-be-cleaned pipe is formed on the jacking assembly; the pneumatic grinding machine assembly is arranged on the frame, located below the clamping area and used for conducting surface cleaning on the pipe to be cleaned. In the actual operation process, an operator can clamp the to-be-cleaned pipe in the clamping area through the jacking assembly, then the operator starts the pneumatic grinding machine assembly, and the pneumatic grinding machine assembly located below the clamping area can directly clean the surface of the to-be-cleaned pipe. Compared with a manual operation mode in the prior art, the pipe surface cleaning device is easy to operate, cleaning operation can be carried out only by clamping the pipe to be cleaned and then starting the pneumatic grinding machine assembly, meanwhile, the assembly and disassembly process is more convenient, and cleaning efficiency is higher due to the fact that manual operation is not needed.

Description

Technical Field

[0001] The utility model relates to the field of surface processing and cleaning of pipes, in particular to a pipe surface cleaning device. Background Art

[0002] In the field of rail vehicles, for example, circular aluminum pipes with surface coatings are usually installed on the shock absorber seats of the car body components of multiple unit trains. Welding is required between the aluminum pipes and the shock absorber seats, and the surface treatment, such as cleaning the oxide film, needs to be carried out before welding at the parts to be welded.

[0003] For the conventional cleaning method, usually a through pipe is inserted into the to-be-assembled round hole, a part of the length is drawn out, and a hand-held stainless steel pneumatic wire brush is used to polish the oxide film in the to-be-welded area. During the cleaning process, the round pipe usually needs to be rotated, and after cleaning the oxide film at one end, the round pipe needs to be drawn out and flipped, and the above process is repeated to clean the oxide film at the other end of the round pipe until all the oxide films at the welding parts are cleaned.

[0004] The above-mentioned conventional cleaning operation method mainly has the following problems. For example, the surface coating is damaged due to the friction between the round pipe and the assembly hole during the cleaning process, so special personnel are required to repair the damaged surface coating; the quality of oxide film cleaning is low and there are certain safety hazards; due to the need for manual repetitive operations, the labor intensity is high, the production efficiency is low, and the operation and loading / unloading are cumbersome. Content of the Utility Model

[0005] The utility model provides a pipe surface cleaning device to solve the defects of high labor intensity, low production efficiency, cumbersome operation and loading / unloading caused by manual repetitive operations in the prior art, and achieve the effects of convenient loading / unloading, easy operation and high cleaning efficiency.

[0006] The utility model provides a pipe surface cleaning device, including: a frame; a clamping assembly, the clamping assembly is arranged on the frame and the clamping assembly forms a clamping area for clamping the pipe to be cleaned; a pneumatic grinding machine assembly, the pneumatic grinding machine assembly is arranged on the frame and is located below the clamping area, and is used for surface cleaning of the pipe to be cleaned.

[0007] According to the pipe surface cleaning device provided by the utility model, the clamping assembly includes: a pair of clamping heads, the pair of clamping heads are arranged on the frame opposite to each other along the width direction of the frame, the area between the pair of clamping heads forms the clamping area, and the pair of clamping heads can move towards or away from each other.

[0008] According to the pipe surface cleaning device provided by the present utility model, the pressing component further includes: a mounting seat, each of the pressing heads is mounted on the frame through the mounting seat and can move relative to the mounting seat; a pressing handle, the pressing handle is connected to the outer end of the pressing head; a clamping spring, the clamping spring is sleeved on the pressing head and is located between the mounting seat and the pressing handle. Wherein, in a state where the pressing handle is pulled outwards, a pair of the pressing heads can move away from each other; in a state where the pressing handle is released, a pair of the pressing heads can move towards each other under the restoring force of the clamping spring.

[0009] According to the pipe surface cleaning device provided by the present utility model, the pneumatic grinding machine component includes: a mounting frame, the mounting frame is mounted on the frame; a pneumatic grinding machine, the pneumatic grinding machine is hoisted on the mounting frame through a hoisting frame.

[0010] According to the pipe surface cleaning device provided by the present utility model, the pneumatic grinding machine component further includes: a height adjustment lead screw, the height adjustment lead screw is arranged on the mounting frame and is connected to the hoisting frame; a height adjustment handle, the height adjustment handle is connected to the height adjustment lead screw. Wherein, the rotational movement of the height adjustment handle can drive the hoisting frame to lift along the height direction of the frame through the height adjustment lead screw, so as to drive the pneumatic grinding machine to lift.

[0011] According to the pipe surface cleaning device provided by the present utility model, an adjustment chute is formed on the hoisting frame. Wherein, the pneumatic grinding machine is installed on the adjustment chute through a lead screw structure and can move along the width direction of the frame on the adjustment chute, and the adjusting rod of the lead screw structure is arranged outside the frame.

[0012] According to the pipe surface cleaning device provided by the present utility model, the pneumatic grinding machine component includes two pneumatic grinding machines. Wherein, the two pneumatic grinding machines are arranged along the width direction of the frame and are arranged side by side along the length direction of the frame.

[0013] According to the pipe surface cleaning device provided by the present utility model, the control switch of the pneumatic grinding machine is arranged outside the frame.

[0014] According to the pipe surface cleaning device provided by the present utility model, the number of the pressing components and the number of the pneumatic grinding machine components are respectively set to at least two groups, and the pressing components and the pneumatic grinding machine components are arranged in one-to-one correspondence.

[0015] The pipe surface cleaning device provided by the present utility model further includes: a protective cover, which can be switched between an open state and a closed state. Wherein, in the open state, the pressing assembly and the pneumatic grinding machine assembly are exposed; in the closed state, the protective cover covers the pressing assembly and the pneumatic grinding machine assembly.

[0016] In the pipe surface cleaning device provided by the present utility model, the pressing assembly is arranged on the frame and a clamping area for clamping the pipe to be cleaned is formed in the pressing assembly. The pneumatic grinding machine assembly is arranged on the frame and is located below the clamping area. During the actual operation process, the operator can clamp the pipe to be cleaned in the clamping area through the pressing assembly, and then the operator starts the pneumatic grinding machine assembly. The pneumatic grinding machine assembly located below the clamping area can directly clean the surface of the pipe to be cleaned. Compared with the manual operation method in the prior art, the pipe surface cleaning device provided by the present utility model is simple to operate. Only by clamping the pipe to be cleaned and then starting the pneumatic grinding machine assembly can the cleaning operation be carried out. At the same time, the loading and unloading process is more convenient, and because there is no need for manual operation, the cleaning efficiency is also higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a perspective view of the pipe surface cleaning device provided by the present utility model.

[0019] Figure 2 is Figure 1 one of the partial enlarged views of the shown pipe surface cleaning device.

[0020] Figure 3 is Figure 1 two of the partial enlarged views of the shown pipe surface cleaning device.

[0021] Figure 4 is Figure 1 three of the partial enlarged views of the shown pipe surface cleaning device.

[0022] Figure 5 is Figure 1 four of the partial enlarged views of the shown pipe surface cleaning device.

[0023] Reference numerals:

[0024] 100, Pipe surface cleaning device; 102, Frame; 104, Tightening assembly; 106, Pneumatic grinding machine assembly; 108, Tightening press head; 110, Mounting seat; 112, Tightening handle; 114, Clamping spring; 116, Mounting frame; 118, Pneumatic grinding machine; 120, Hoisting frame; 122, Height adjustment lead screw; 124, Height adjustment handle; 126, Adjustment chute; 128, Adjustment rod; 130, Protective cover; 132, Control switch; 200, Pipe to be cleaned; L, Length direction; W, Width direction; H, Height direction. Detailed implementation manners

[0025] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0026] As Figures 1 to 5 shown, the embodiment of the present utility model provides a pipe surface cleaning device 100. Generally speaking, the pipe surface cleaning device 100 includes a frame 102 as an overall external frame structure, a tightening assembly 104 for clamping and tightening the pipe to be cleaned, and a pneumatic grinding machine assembly 106 for surface processing of the pipe to be cleaned.

[0027] Specifically, as Figure 1 and Figure 2 shown, the tightening assembly 104 can be arranged on the frame 102, and the tightening assembly 104 can form a clamping area for clamping the pipe 200 to be cleaned. In actual application, the pipe 200 to be cleaned, such as a coated aluminum pipe, can be clamped and tightened by the tightening assembly 104, and the pipe 200 to be cleaned can be located in the clamping area, so as to perform surface processing operations. The pneumatic grinding machine assembly 106 can also be arranged on the frame 102, and the position of the pneumatic grinding machine assembly 106 can be located below the clamping area formed by the tightening assembly 104. In actual application, when the pipe 200 to be cleaned is clamped and tightened by the tightening assembly 104, the operator can start the pneumatic grinding machine assembly 106 to clean the surface of the pipe 200 to be cleaned, for example, clean the oxide film of the coated aluminum pipe.

[0028] As can be seen, in the pipe surface cleaning device 100 provided by the embodiment of the present utility model, the clamping assembly 104 is arranged on the frame 102 and the clamping assembly 104 forms a clamping area for clamping the pipe 200 to be cleaned. The pneumatic grinding machine assembly 106 is arranged on the frame 102 and is located below the clamping area. During the actual operation, the operator can clamp the pipe 200 to be cleaned in the clamping area through the clamping assembly 104, and then the operator starts the pneumatic grinding machine assembly 106. The pneumatic grinding machine assembly 106 located below the clamping area can directly clean the surface of the pipe 200 to be cleaned. Compared with the manual operation method in the prior art, the pipe surface cleaning device 100 provided by the present utility model is easy to operate. Just clamp the pipe 200 to be cleaned and then start the pneumatic grinding machine assembly 106 to carry out the cleaning operation. At the same time, the loading and unloading process is more convenient, and because there is no need for manual operation, the cleaning efficiency is also higher.

[0029] It should be specifically noted here that in the pipe surface cleaning device 100 provided by the embodiment of the present utility model, the number of the clamping assemblies 104 and the number of the pneumatic grinding machine assemblies 106 can be adjusted according to actual use needs. For example, in one embodiment, the pipe surface cleaning device 100 may only include a set of clamping assemblies 104 and a corresponding set of pneumatic grinding machine assemblies 106; in other embodiments, the pipe surface cleaning device 100 may include at least two sets of clamping assemblies 104 and at least two sets of pneumatic grinding machine assemblies 106 corresponding in number. It should be understood that no matter one set or multiple sets of clamping assemblies 104 and pneumatic grinding machine assemblies 106 are provided, as long as the clamping assemblies 104 and the pneumatic grinding machine assemblies 106 are arranged in one-to-one correspondence. In the embodiment shown in Figure 1 , an embodiment in which the pipe surface cleaning device 100 includes 2 sets of clamping assemblies 104 and 2 sets of pneumatic grinding machine assemblies 106 is schematically shown. In this case, the pipe surface cleaning device 100 provided by the present utility model can clean 2 pipes 200 to be cleaned at the same time. In other words, the present utility model can clean multiple pipes 200 to be cleaned at the same time in a more efficient manner, thereby further improving the cleaning efficiency of the pipe surface cleaning device 100.

[0030] Continue to refer to Figures 1 to 5, in the embodiment of the present utility model, for the tightening assembly 104, the tightening assembly 104 may include a pair of tightening heads 108 for clamping and tightening the pipe 200 to be cleaned. Specifically, this pair of tightening heads 108 may be disposed on the frame 102 opposite to each other along the width direction W of the frame 102, and the area between this pair of tightening heads 108 may form the clamping area as described above. That is to say, during actual application, the pipe 200 to be cleaned can be clamped and tightened between a pair of tightening heads 108, and the pipe 200 to be cleaned will be arranged along the width direction W of the frame 102. Further, in the embodiment of the present utility model, this pair of tightening heads 108 can move towards or away from each other. In other words, when it is necessary to assemble the pipe 200 to be cleaned between a pair of tightening heads 108, the tightening heads 108 can be first moved away from each other to facilitate the assembly of the pipe 200 to be cleaned in place. After the pipe 200 to be cleaned is assembled in place, the tightening heads 108 are then moved towards each other to clamp and tighten the pipe 200 to be cleaned. In this way, the pipe surface cleaning device 100 provided by the embodiment of the present utility model can clamp and tighten the pipe 200 to be cleaned in place in a simple and easy-to-operate manner.

[0031] See further Figures 3 to 5, in the embodiment of the present utility model, in addition to a pair of clamping heads 108, the clamping assembly 104 may further include a mounting base 110, a clamping handle 112, and a clamping spring 114. Specifically, the mounting base 110 may be disposed on the frame 102, and each of the above-mentioned clamping heads 108 may be mounted on the frame 102 through the mounting base 110, and each clamping head 108 can move relative to the mounting base 110, for example, move along the width direction W of the frame 102. For example, during actual assembly, the clamping head 108 may be mounted and supported on the mounting base 110 through a bearing. Further, the clamping handle 112 may be connected to the outer end of the clamping head 108 for an operator to hold. For the clamping spring 114, the clamping spring 114 may be sleeved on the main body of the clamping head 108 and located between the mounting base 110 and the clamping handle 112. During actual application, the operator can move the clamping head 108 by operating the clamping handle 112, thereby realizing the mutual approach or separation movement of the pair of clamping heads 108. Specifically, when the clamping handle 112 is pulled outward by the operator along the width direction W of the frame 102, the pair of clamping heads 108 can move away from each other, allowing the operator to place the pipe 200 to be cleaned in place; when the clamping handle 112 is released by the operator, the pair of clamping heads 108 can move towards each other under the restoring force of the clamping spring 114, thereby clamping and tightening the pipe 200 to be cleaned. Therefore, in this way, the pipe surface cleaning device 100 provided by the embodiment of the present utility model can clamp and tighten the pipe 200 to be cleaned in place in a simple and easy-to-operate manner.

[0032] It should be additionally noted here that on the one hand, the clamping handle 112 can be pulled by the operator to install the pipe 200 to be cleaned in place, and on the other hand, the clamping handle 112 can also be rotated by the operator. Since the clamping head 108 can be mounted and supported on the mounting base 110 through a bearing, when the clamping handle 112 rotates, it can drive the clamping head 108 to rotate synchronously. Since the clamping head 108 clamps and tightens the pipe 200 to be cleaned, when the clamping head 108 rotates, it can drive the pipe 200 to be cleaned to rotate synchronously, thereby using the pneumatic grinding machine assembly 106 located below to clean the surface of the rotating pipe 200 to be cleaned, such as cleaning the oxide film.

[0033] Continue to refer to Figure 1 and Figure 2, for the pneumatic grinding machine assembly 106, it may include a mounting frame 116 and a pneumatic grinding machine 118. Specifically, the mounting frame 116 can be mounted on the frame 102, and the pneumatic grinding machine 118 can be hoisted on the mounting frame 116 through a hoisting frame 120.

[0034] In an embodiment of the present utility model, in order to conveniently adjust the position of the pneumatic grinding machine 118 so as to clean the designated part of the pipe 200 to be cleaned efficiently and flexibly, the pneumatic grinding machine assembly 106 can be configured into a structure capable of multi-directional adjustment.

[0035] Specifically, as Figure 1 and Figure 2 shown, in an embodiment of the present utility model, in addition to the mounting frame 116 and the pneumatic grinding machine 118, the pneumatic grinding machine assembly 106 may further include a height adjustment lead screw 122 and a height adjustment handle 124. Specifically, the height adjustment lead screw 122 can be arranged on the mounting frame 116 and connected to the hoisting frame 120, and the height adjustment handle 124 can be connected to the height adjustment lead screw 122. During specific operation, the operator can rotate the height adjustment handle 124, and the rotation of the height adjustment handle 124 can drive the height adjustment lead screw 122 to act, thereby driving the hoisting frame 120 to move up and down along the height direction H of the frame 102, so as to drive the pneumatic grinding machine 118 to realize the up and down movement along the height direction H of the frame 102.

[0036] Further referring to Figure 1 and Figure 2 , in order to realize the movement of the pneumatic grinding machine 118 along the width direction W of the frame 102, an adjustment chute 126 can be arranged on the hoisting frame 120. Specifically, the pneumatic grinding machine 118 can be arranged to be mounted on the adjustment chute 126 through a lead screw structure. During actual application, the operator can operate the adjustment rod 128 of the lead screw structure arranged outside the frame 102, such as by rotating operation, or pushing and pulling operation, etc., and then the lead screw structure will drive the pneumatic grinding machine 118 to move on the adjustment chute 126, so as to realize that the pneumatic grinding machine 118 can move along the width direction W of the frame 102, thereby adjusting the position of the pneumatic grinding machine 118.

[0037] Therefore, according to the description of the above embodiments, it can be known that the pneumatic grinding machine 118 in the pneumatic grinding machine assembly 106 as described above can be moved and adjusted along the height direction H and the width direction W of the frame 102. In this way, the pneumatic grinding machine 118 can be simply and conveniently adjusted to the designated position of the pipe 200 to be cleaned, so as to perform more accurate and precise surface cleaning operations, such as oxide film cleaning operations.

[0038] In an embodiment of the present utility model, the number of pneumatic grinders 118 in the pneumatic grinder assembly 106 can be set according to actual situations. For example, in one embodiment, the pneumatic grinder assembly 106 may only include 1 pneumatic grinder 118; in another embodiment, as Figure 1 shown, the pneumatic grinder assembly 106 may include 2 pneumatic grinders 118. In the Figure 1 shown embodiment, since there are 2 sets of tightening assemblies 104 and 2 sets of pneumatic grinder assemblies 106, a total of 4 pneumatic grinders 118 are included in this embodiment. In this case, as Figure 1 shown, these two pneumatic grinders 118 can be arranged along the width direction W of the frame 102 and arranged side by side along the length direction L of the frame 102. In this way, multiple pneumatic grinders 118 can be used to perform surface cleaning operations simultaneously, thereby improving the processing accuracy and processing efficiency.

[0039] Continuing to refer to Figure 1 , in the embodiment of the present utility model, the pipe surface cleaning device 100 may further include a protective cover 130. Specifically, the protective cover 130 can be switched between an open state and a closed state. Figure 1 The figure shows a schematic diagram of the protective cover 130 in the open state. When the protective cover 130 is in the open state, the tightening assembly 104 and the pneumatic grinder assembly 106 can be exposed for operation and use. When the protective cover 130 is in the closed state through, for example, a rotation operation or a push-pull operation, the protective cover 130 can cover the tightening assembly 104 and the pneumatic grinder assembly 106. In this way, the surface cleaning operation of the pipe 200 to be cleaned is safer and more reliable, that is, the cleaning of the pipe 200 to be cleaned is completed in a sealed state of the device.

[0040] During the actual application of the pipe surface cleaning device 100 provided by the present utility model, for example, taking the pipe to be cleaned 200 as a coated aluminum pipe and the surface cleaning operation as the oxide film cleaning operation at a specified position of the coated aluminum pipe as an example. First, the operator places the coated aluminum pipe between the opposing clamping heads 108 and clamps the coated aluminum pipe through the clamping spring 114. Then, by operating the height adjustment handle 124, the height adjustment lead screw 122 is driven to drive the lifting frame 120 and the pneumatic grinding machine 118 to move up and down, thereby adjusting the height distance of the pneumatic grinding machine 118. Next, by operating the adjustment rod 128, the pneumatic grinding machine 118 is driven to move on the adjustment chute 126, thereby adjusting the front and rear position distance of the pneumatic grinding machine 118. Further, the protective cover 130 is adjusted to the closed state, and the control switch 132 of the pneumatic grinding machine 118 provided outside the frame 102 is turned on, thereby starting the pneumatic grinding machine 118. Then, the clamping handle 112 is rotated one circle, and thus the oxide film cleaning at the specified position of the coated aluminum pipe is realized by using the started pneumatic grinding machine 118.

[0041] In summary, the pipe surface cleaning device 100 provided by the embodiments of the present utility model can protect the surface coating during the cleaning process of, for example, the aluminum pipe oxide film, and convert the traditional manual cleaning into a machine automatic cleaning operation mode. Therefore, it can effectively improve the oxide film cleaning quality, reduce the labor intensity, and improve the production efficiency. In addition, the pipe surface cleaning device 100 of the present utility model is convenient to load and unload and has a high cleaning efficiency. In actual application, the surface cleaning operation of 1 round pipe only takes 30 seconds to complete, saving 4.5 minutes compared with the traditional cleaning duration of 5 minutes per pipe. In addition, the operation of the pipe surface cleaning device 100 of the present utility model is simpler. After the round pipe is clamped, the pneumatic grinding machine 118 is started, and the round pipe can be rotated through the hand-cranked device to complete the cleaning operation, and 2 or more round pipes can be cleaned simultaneously. Further, the round pipe is clamped and tightened in the two-end clamping heads 108, and the surface coating does not contact external objects, which can effectively avoid the problem of coating damage. And the pipe surface cleaning device 100 of the present utility model is more convenient to adjust. The pneumatic grinding machine 118 can be adjusted in the high and low and front and rear directions according to the pipe diameter, and the clamping heads 108 can be replaced according to different pipe diameters. Therefore, the oxide film cleaning function for different pipe diameters can be realized. Further, the cleaning process of the entire round pipe is completed in the sealed state of the pipe surface cleaning device 100, so it is safer and more reliable.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pipe surface cleaning device (100), characterized in that, Comprising: Frame (102); Tightening assembly (104), the tightening assembly (104) is arranged on the frame (102) and the tightening assembly (104) forms a clamping area for clamping the pipe to be cleaned (200); Pneumatic grinding machine assembly (106), the pneumatic grinding machine assembly (106) is arranged on the frame (102) and is located below the clamping area, and is used for surface cleaning of the pipe to be cleaned (200).

2. The pipe surface cleaning device according to claim 1, characterized in that, The tightening assembly (104) includes: A pair of tightening heads (108), a pair of the tightening heads (108) are arranged on the frame (102) opposite to each other along the width direction (W) of the frame (102), the area between the pair of tightening heads (108) forms the clamping area and the pair of tightening heads (108) can move towards or away from each other.

3. The pipe surface cleaning device according to claim 2, characterized in that, The tightening assembly (104) further includes: Mounting seat (110), each tightening head (108) is mounted on the frame (102) through the mounting seat (110) and can move relative to the mounting seat (110); Tightening handle (112), the tightening handle (112) is connected to the outer end of the tightening head (108); Clamping spring (114), the clamping spring (114) is sleeved on the tightening head (108) and is located between the mounting seat (110) and the tightening handle (112), wherein, in the state where the tightening handle (112) is pulled outwards, the pair of tightening heads (108) can move away from each other; in the state where the tightening handle (112) is released, the pair of tightening heads (108) can move towards each other under the restoring force of the clamping spring (114).

4. The pipe surface cleaning device according to claim 1, characterized in that, The pneumatic grinding machine assembly (106) includes: Mounting frame (116), the mounting frame (116) is mounted on the frame (102); Pneumatic grinding machine (118), the pneumatic grinding machine (118) is hoisted on the mounting frame (116) through a hoisting frame (120).

5. The pipe surface cleaning device according to claim 4, characterized in that, The pneumatic grinding machine assembly (106) further includes: Height adjustment lead screw (122), the height adjustment lead screw (122) is arranged on the mounting frame (116) and is connected to the hoisting frame (120); Height adjustment handle (124), the height adjustment handle (124) is connected to the height adjustment lead screw (122), wherein, the rotational movement of the height adjustment handle (124) can drive the hoisting frame (120) to lift and lower along the height direction (H) of the frame (102) through the height adjustment lead screw (122), so as to drive the pneumatic grinding machine (118) to lift and lower.

6. The pipe surface cleaning device according to claim 4, characterized in that, The hoisting frame (120) is formed with an adjustment chute (126), Among them, the pneumatic grinder (118) is installed on the adjustment chute (126) through a lead screw structure and can move along the width direction (W) of the frame (102) on the adjustment chute (126). The adjusting rod (128) of the lead screw structure is arranged outside the frame (102).

7. The pipe surface cleaning device according to claim 4, characterized in that, The pneumatic grinder assembly (106) includes two of the pneumatic grinders (118). Among them, the two pneumatic grinders (118) are arranged along the width direction (W) of the frame (102) and are arranged side by side along the length direction (L) of the frame (102).

8. The pipe surface cleaning device according to claim 4, characterized in that, The control switch (132) of the pneumatic grinder (118) is arranged outside the frame (102).

9. The pipe surface cleaning device according to any one of claims 1 to 8, characterized in that The number of the pressing components (104) and the number of the pneumatic grinder assemblies (106) are respectively set to at least two groups, and the pressing components (104) and the pneumatic grinder assemblies (106) are arranged in one-to-one correspondence.

10. The pipe surface cleaning device according to any one of claims 1 to 8, characterized in that, Further included is: a protective cover (130), which can be switched between an open state and a closed state. Among them, in the open state, the pressing component (104) and the pneumatic grinder assembly (106) are exposed; in the closed state, the protective cover (130) covers the pressing component (104) and the pneumatic grinder assembly (106).

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