Paint brushing system for brushing paint on pipeline

Abstract

The invention relates to a painting system for painting a pipeline, the painting system comprising: a mounting cylinder (1) having a receiving space (7) through which a pipeline to be painted can pass; the walking device (2) is provided with a walking driving mechanism (9) arranged in the containing space (7), the walking driving mechanism (9) is provided with a driving wheel (12) and a first installation support (11), the driving wheel (12) is installed on the inner side of the installation cylinder (1) through the first installation support (11), and the driving wheel (12) can be supported on a pipeline to be painted. The driving device is used for driving the mounting cylinder (1) to move along a pipeline to be painted; and the paint brushing device (3) is provided with a paint brushing driving mechanism (14) and a paint brushing mechanism (15) which can be driven by the paint brushing driving mechanism (14) to perform paint brushing operation.

Description

Technical Field

[0001] The invention relates to a painting system for painting pipelines. Background Art

[0002] In the industrial field, pipelines are widely used as a device for transporting fluid media. However, pipelines are usually exposed to the atmosphere and are easily corroded by moisture in the atmosphere. In order to protect the pipeline surface from corrosion, it is usually necessary to paint the outer surface of the pipeline.

[0003] The current painting process requires manual participation. However, on the one hand, the paint used for painting usually has a pungent odor and is toxic, and manual painting affects the health of the painters. On the other hand, after the pipeline is installed, the pipeline may be located at a higher height in the space, so it is also difficult to paint at high altitude. In addition, the amount of repetitive work in painting is large. Summary of the invention

[0004] The object of the present invention is to provide a painting system for painting pipelines, which can solve at least one of the above-mentioned problems.

[0005] In order to achieve the above object, the present invention proposes a painting system for painting a pipeline, characterized in that the painting system comprises:

[0006] A mounting barrel having a receiving space through which a pipe to be painted can pass;

[0007] A traveling device, the traveling device having a traveling drive mechanism disposed in the accommodating space, the traveling drive mechanism having a driving wheel and a first mounting bracket, the driving wheel being mounted on the inner side of the mounting cylinder through the first mounting bracket, and the driving wheel being supported on the pipe to be painted so as to drive the mounting cylinder to move along the pipe to be painted; and

[0008] A painting device comprises a painting drive mechanism and a painting mechanism which can be driven by the painting drive mechanism to perform a painting operation.

[0009] Advantageously, the installation cylinder comprises a first cylinder half and a second cylinder half which are hingedly connected to each other via a hinge axis, and the first cylinder half and the second cylinder half enclose the accommodation space in a closed state.

[0010] Advantageously, the first cartridge half and the second cartridge half can be locked to each other by a locking mechanism in the closed state.

[0011] Advantageously, the driving wheel is mounted on the articulated shaft via the first mounting bracket.

[0012] Advantageously, the drive wheel is equipped with a servo hub motor.

[0013] Advantageously, a plurality of drive wheels are provided, and the plurality of drive wheels are disposed successively in the accommodation space along the longitudinal direction of the mounting cylinder.

[0014] Advantageously, the walking device also has a supporting mechanism arranged in the accommodating space, the supporting mechanism has a supporting wheel and a second mounting bracket, the supporting wheel is mounted on the inner side of the mounting cylinder through the second mounting bracket, and the supporting wheel can be supported on the pipe to be painted.

[0015] Advantageously, a plurality of rows of support wheels are provided, each row of support wheels having at least two support wheels arranged successively along the longitudinal direction of the mounting cylinder, and the support wheels of each row are arranged spaced apart and distributed in the circumferential direction of the mounting cylinder.

[0016] Advantageously, the distance of the drive wheel from the longitudinal axis of the mounting cylinder and / or the contact force of the drive wheel on the outer surface of the pipe to be painted can be adjusted by means of the first mounting bracket of the travel drive.

[0017] Advantageously, the distance of the support wheel from the longitudinal axis of the mounting cylinder and / or the contact force of the support wheel on the outer surface of the pipe to be painted can be adjusted by means of the second mounting bracket of the support device.

[0018] Advantageously, the circumferential surface of the driving wheel and / or the supporting wheel is concavely configured so as to be matched to the outer circumferential surface of the pipe to be painted.

[0019] Advantageously, the paint driving mechanism comprises a paint toothed ring which can rotate around a pipe to be painted, and the paint mechanism comprises a paint roller and a roller support, wherein the paint roller is mounted on the paint toothed ring via the roller support.

[0020] Advantageously, the paint driving mechanism comprises a sector gear member, which can swing back and forth to drive the paint gear ring to rotate back and forth alternately clockwise and counterclockwise around the pipe to be painted.

[0021] Advantageously, the paint brush drive mechanism has a rotatable turntable, the turntable has an eccentric guide pin, and the fan-shaped gear part has a guide slot, and the eccentric guide pin can be guided in the guide slot, wherein when the turntable rotates, the eccentric guide pin slides back and forth in the guide slot to drive the fan-shaped gear part to swing back and forth.

[0022] Advantageously, the painting device comprises a paint tank, which is connected to the paint roller via a hose for supplying paint to the paint roller.

[0023] Advantageously, the paint tank is installed above the mounting cylinder; alternatively, the paint tank is installed below the mounting cylinder, and the paint brushing mechanism has a paint pump for pumping paint to the paint brushing roller.

[0024] Advantageously, the paint toothed ring comprises a first ring half and a second ring half which are separable from each other, and the first ring half and the second ring half can be connected to form a complete circular ring.

[0025] Advantageously, the distance of the paint roller from the longitudinal axis of the mounting cylinder and / or the contact force of the paint roller on the outer surface of the pipe to be painted can be adjusted by means of the roller support of the painting device.

[0026] Advantageously, the painting system has a battery for supplying electrical energy to the travel drive mechanism and the paint drive mechanism, wherein the battery is arranged on the first cylinder half or the second cylinder half, and the paint drive mechanism is arranged on the second cylinder half or the first cylinder half. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be explained in more detail below with the aid of embodiments with reference to the accompanying drawings, but the present invention is not limited to the embodiments described in the drawings and described in detail below. The accompanying drawings are as follows:

[0028] Figure 1 A perspective view schematically showing a painting system according to an embodiment of the present invention;

[0029] Figure 2 Schematically shown Figure 1 A first barrel half of a mounting barrel of a painting system;

[0030] Figure 3 Schematically shown Figure 1 The schematic arrangement positions of the support wheels of the painting system in the circumferential distribution along the first barrel half of the mounting barrel;

[0031] Figure 4 Schematically shown Figure 1 A side view of a support mechanism of a painting system;

[0032] Figure 5a Schematically shown Figure 1 A three-dimensional diagram of a driving wheel of a travel driving mechanism of a painting system;

[0033] Figure 5b Schematically showing a side view of the drive wheel in 5a;

[0034] Figure 6a Schematically shown Figure 1 A side view of a paint brushing drive mechanism of a paint brushing device of a paint brushing system;

[0035] Figure 6b Schematically shown Figure 6a An end view of a paint brush drive mechanism;

[0036] Figure 7 Schematically shown Figure 1 An end view of the painting system in FIG.

[0037] Figure 8 A side view schematically showing a first ring half of a painted toothed ring;

[0038] Fig. 9 A side view schematically showing a paint roller and a roller support of a paint mechanism;

[0039] Fig.10 A perspective view schematically shows a paint roller of a paint application mechanism. DETAILED DESCRIPTION

[0040] Illustrative embodiments described below. In this specification, for the sake of explanation only, various systems, structures and devices are schematically depicted in the accompanying drawings, but all features of the actual systems, structures and devices are not described, such as well-known functions or structures are not described in detail, so as to avoid unnecessary details that make the present invention unclear. Of course, it should be understood that in any practical application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related restrictions need to be followed, and these specific goals may vary from one practical application to another. In addition, it should be understood that such specific implementation decisions, although complex and time-consuming, are routine tasks for ordinary technicians in the field who benefit from the present invention.

[0041] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of such terms and phrases by those skilled in the relevant art. Consistent usage of a term or phrase herein is not intended to imply a special definition of the term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly listed in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0042] Unless required by the context, throughout the following specification, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open, inclusive sense, that is, such as "including but not limited to".

[0043] Figure 1 A painting system 100 for painting the outer surface of a pipe, such as a round pipe, according to one embodiment of the present invention is shown.

[0044] See also Figure 1 , a painting system 100 is shown, and the painting system 100 includes a mounting barrel 1. In the illustrated embodiment, the mounting barrel 1 may have a hollow cylindrical shape and therefore have a receiving space 7, in which a pipe to be painted (not shown) may be received. In other words, in the painting state, the mounting barrel 1 surrounds the pipe to be painted. For example, at this time, the longitudinal axis of the mounting barrel 1 substantially coincides with the longitudinal axis of the pipe to be painted. The mounting barrel 1 may have a first barrel half 4 and a second barrel half 5. In the assembled or closed state of the two, the first barrel half 4 and the second barrel half 5 enclose the receiving space 7. By means of this two-piece construction of the mounting barrel 1, the painting system 100 can be more easily installed on the pipe to be painted. That is, it is not necessary to put it on the pipe from the free end of the pipe, but it can be installed on the pipe at any position in the longitudinal direction of the pipe.

[0045] See also Figure 1 and Figure 2 The mounting cylinder 1 has a hinge axis 20. The first cylinder half 4 and the second cylinder half 5 (in Figure 2 The mounting barrel 1 also has a locking mechanism. The locking mechanism has connecting tabs 22 respectively arranged (for example, welded) on the first barrel half 4 and the second barrel half 5, and the locking mechanism can have a screw 52 that can pass through each of the connecting tabs, by means of which the connecting tabs 22 on the first barrel half 4 and the second barrel half 5 can be connected to each other, so that the first barrel half 4 and the second barrel half 5 are locked to each other at the second joint 21 by the locking mechanism. However, other forms of locking mechanisms are also conceivable. Here, the first engaging portion 19 and the second engaging portion 21 are arranged diametrically opposite to each other, or the articulated shaft 20 and the locking mechanism are arranged diametrically opposite to each other.

[0046] See also Figure 2 The painting system 100 has a traveling device 2 in the receiving space 7 , which is configured to allow the installation tube 1 to automatically travel along the longitudinal axis of the pipeline to be painted. The traveling device 2 has a traveling drive mechanism 9 and a supporting mechanism 10 .

[0047] See also Figure 2 and Figure 5a as well as Figure 5b, shows a travel drive mechanism 9 of a travel device 2, which has a first mounting bracket 11 and a drive wheel 12, and the drive wheel 12 can be mounted on the mounting tube 1, or more precisely, on the articulated shaft 20 of the mounting tube 1, through the first mounting bracket 11. During the painting process, the drive wheel 12 can be supported on the pipe to be painted and travel thereon, so as to drive the mounting tube 1 to move along the pipe to be painted. The drive wheel 12 can be made of an elastic material, such as rubber. Here, the outer circumference of the drive wheel 12 is configured to be concave from both ends to the middle, so as to contact the outer surface of the pipe with a larger area and thus greater frictional power. The first mounting bracket 11 of the drive wheel 12 can be non-adjustable, but it can also be used, for example, to adjust the radial distance of the drive wheel 12 from the longitudinal axis of the mounting tube 1 and / or the extrusion force on the outer surface of the pipe to be painted by using a slide mechanism, as the support wheel 13 to be introduced below. The drive wheel 12 can be driven by a servo hub motor integrated therewith, so that the travel drive mechanism 9 is more compact.

[0048] See also Figure 2 and Figure 4 , showing the support mechanism 10 of the walking device 2. In the more detailed diagram of the support mechanism 10 Figure 4 It can be seen that the support mechanism 10 has a second mounting bracket 53 and a support wheel 13. The support wheel 13 can be mounted on the inner wall of the mounting tube 1 by means of the second mounting bracket 53, and the support wheel 13 is supported on the pipe during the painting process. The wheel circumference of the support wheel 13 is configured to be concave. In other words, the diameter of the wheel circumference of the support wheel 13 starts from one end face of the support wheel 13 and first decreases toward the other end face with a maximum diameter, and reaches a minimum diameter in the middle of the support wheel 13, and continues to increase to a maximum diameter from the middle toward the other end face. Therefore, the support wheel 13 has the same maximum diameter at its two end faces. The concave outer circumferential surface of the support wheel 13 is adapted to the circumferential surface of the pipe to be painted, so that the support wheel 13 can roll smoothly along the longitudinal axis of the pipe to be painted, but is difficult to slide along the circumference of the pipe to be painted due to the larger contact surface and contact friction. The support wheel 13 can be made of an elastic material, such as rubber. See Figure 4, the second mounting bracket 53 has two chute mechanisms 23 symmetrically arranged on both sides of the support wheel 13. The chute mechanism 23 can have a chute member 29 and a sliding member 30 arranged with each other. The chute member 29 has a chute 31 and is fixedly connected, for example, welded, to the inner wall of the mounting cylinder 1. The sliding member 30 is configured as a rod-shaped member, which has a chute bolt 32 at one end thereof and is fixedly connected to the rotating shaft 33 of the support wheel 13 at the other end thereof. The chute bolt 32 can slide in the chute 31 and can be clamped at any position in the chute 31. Therefore, by adjusting the clamping position of the chute bolt 32 in the chute 31, the elastic support wheel 13 can be pressed against the pipe to be painted, so that the support wheel 13 can radially support the mounting cylinder 1 on the one hand and prevent the mounting cylinder 1 from rotating on the other hand based on the circumferential friction between it and the outer surface of the pipe, thereby realizing the supporting function of the support mechanism 10. In addition, the radial distance of the support wheel 13 from the longitudinal axis of the mounting tube 1 can be adjusted by the slide mechanism 23 of the second mounting bracket 53, so that the painting system 100 can be adapted to pipes with different pipe diameters. Similarly, the squeezing force of the support wheel 13 on the outer surface of the pipe to be painted can be adjusted by the slide mechanism 23 of the second mounting bracket 53 to ensure that the support wheel 13 and thus the entire walking painting system 100 "holds" the pipe to prevent rotation relative to it.

[0049] See also Figure 2 It can be seen that the support mechanism 10 has multiple pairs of second mounting brackets 53 and support wheels 13. Every two (or more) support wheels 13 arranged successively in the longitudinal direction of the mounting tube 1 constitute a support wheel group. Figure 2 In the figure, three supporting wheel groups with a total of six supporting wheels 13 are schematically shown. Figure 3 The 45° distribution angle shown as an example in the figure is evenly arranged on the inner wall of the first barrel half 4 in the circumferential direction of the installation barrel 1. Three support wheel groups with a total of six support wheels 13 can be arranged on the corresponding second barrel half 5 in the same way. Therefore, when the installation barrel 1 moves along the longitudinal axis of the pipe to be painted, due to the supporting effect of the support wheels 13, the installation barrel 1 will not move and rotate radially relative to the longitudinal axis of the pipe to be painted. When the installation barrel 1 moves, the driving wheel 12 is configured as a power wheel, and the support wheel 13 is configured as a driven wheel.

[0050] See also Figure 1 and Figure 7 The painting system 100 further comprises a painting device 3 , wherein the painting device 3 comprises a painting driving mechanism 14 and a painting mechanism 15 which can be driven by the painting driving mechanism 14 , and the painting mechanism 15 is used for painting the outer surface of the pipeline.

[0051] Now combine Figure 6a and Figure 6bThe paint brushing drive mechanism 14 of the paint brushing device 3 is described in more detail. The paint brushing drive mechanism 14 has a reciprocating drive device and a sector gear member 38 that can be driven by the reciprocating drive device to perform reciprocating swing. The reciprocating drive device has a drive motor 34 and a turntable 35 that can be driven by the drive motor 34. The drive motor 34 can be installed on the outer wall of the mounting tube 1 through a motor bracket 36, and the output shaft 50 of the drive motor 34 extends outside the mounting tube 1 parallel to the longitudinal axis of the mounting tube 1. The output shaft 50 of the drive motor 34 is perpendicular to the turntable plane of the turntable 35 and is fixedly connected to the turntable 35 at the center of the turntable, so that the drive motor 34 can drive the turntable 35 to rotate. The turntable 35 has an eccentric guide pin 37 spaced apart from the center of the turntable on the side opposite to the motor 34, and the eccentric guide pin 37 extends perpendicular to the turntable plane. The sector gear member 38 has a slide guide portion 39 and a sector gear portion 40. The slide guide portion 39 has a guide slide 41, and the eccentric guide pin 37 of the rotating disk 35 can be guided in the guide slide 41. The sector gear member 38 is equipped with a sector gear member bracket 42, and the sector gear member bracket 42 is fixedly connected to the outer wall of the mounting cylinder 1 at one end, and inserted into the center of the sector gear portion 40 at the other end, so that the sector gear portion 40 is rotatably supported on the sector gear member bracket 42. Therefore, during the rotation of the rotating disk 35, the eccentric guide pin 37 of the rotating disk 35 reciprocates in the guide slide 41 of the sector gear member 38 and drives the sector gear member 38 to swing back and forth around the sector gear member bracket 42 at the same time.

[0052] The paint brushing drive mechanism 14 may also include a paint brushing gear ring 16 that is movably connected to the sector gear portion 40. The paint brushing gear ring 16 has an external tooth portion (at the outer periphery) that meshes with the sector gear portion 40. Figure 1 In the figure, for the sake of clarity, only a partial section of the painted gear ring 16 is drawn with the outer teeth. It goes without saying that the entire outer circumference of the painted gear ring 16 can be provided with an outer tooth portion). The teeth on the outer tooth portion can be aligned with the teeth on the sector gear portion 40 (in Figure 1 The paint toothed ring 16 can be engaged with the paint toothed ring support 43 (see Figure 1 ) is rotatably supported on the right end side of the mounting tube 1. Figure 1 In the embodiment shown, the paint toothed ring 16 is arranged concentrically with the mounting barrel 1. Figure 6aIt is known that the plane where the rotating disk 35 is located and the plane where the sector gear 38 and the paint toothed ring 16 are located are parallel to each other, and these two planes are perpendicular to the longitudinal axis of the mounting tube 1. The paint toothed ring 16 can be a one-piece component. However, in order to facilitate installation from any position of the pipeline, the paint toothed ring 16 can be constructed in multiple pieces, and can have a first ring half 25 and a second ring half 26. The first ring half 25 and the second ring half 26 can be locked by means of a locking device 27 (see Figure 7 and Figure 8 ) is closed and connected to form a complete ring. The locking device 27 can be, for example, a plug-in connection device, and the plug-in connection device can be locked by means of a screw member 54. Through the two-piece design structure of the installation tube 1 and the paint toothed ring 16, the installation tube 1 and the paint toothed ring 16 can be first separated into two halves at the beginning of the painting work, and then the installation tube 1 and the paint toothed ring 16 can be closed and locked after being arranged on the pipe to be painted at the desired position, which makes the installation more convenient.

[0053] See also Figure 6b When the paint driving mechanism 14 is working, the driving motor 34 drives the rotating disk 35 to rotate. The rotating disk 35 guides the slide guide part 39 of the fan-shaped gear member 38 to deflect back and forth through the eccentric guide pin 37 arranged on the rotating disk 35 to slide back and forth in the guide slide groove 41, and drives the fan-shaped gear part 40 of the fan-shaped gear member 38 to rotate back and forth around the fan-shaped gear member bracket 42, that is, to realize the reciprocating swinging motion of the fan-shaped gear member 38. Therefore, the fan-shaped gear part 40 drives the paint toothed ring 16 to rotate alternately clockwise and counterclockwise around the pipe to be painted.

[0054] Now combine Figure 1 and Figure 7 The paint brushing mechanism 15 of the paint brushing device 3 is described. The paint brushing mechanism 15 has at least two, here four paint brushing rollers 17 (see Fig. 9 and Fig.10 ) and a roller support 18 assigned to each paint roller 17 (see Fig. 9 The paint roller 17 may include a cylindrical hollow shell 55 and a paint sponge mounted on the shell 55. The paint is contained inside the shell 55. The paint can penetrate into the paint sponge outside the shell 55 through the opening 56 on the shell 55. The paint sponge can be directly squeezed onto the outer surface of the pipe for painting. The shell 55 also includes an interface 57 (see FIG. 5 ) that communicates with the inside of the shell 55. Fig.10), which is used to bring paint from the outside of the housing 55 into the inside of the housing 55. The roller support 18 can have a slide mechanism 28. The slide mechanism 28 has a slide member 44 and a guide member 45. The guide member 45 can be, for example, a threaded member that can be screwed onto the paint toothed ring 16. The slide member 44 has a slide 46 and rotatably supports the paint roller 17 at its lower end. The guide member 45, which is constructed as a threaded member, can fix the slide member 44 on the paint toothed ring 16 at any position of the slide 44, so that the radial distance between the roller axis of the paint roller 17 and the longitudinal axis of the mounting tube 1 in the radial direction of the mounting tube 1 can be adjusted. Here, the roller axis of the paint roller 17 is parallel to the longitudinal axis of the mounting tube 1 and therefore the longitudinal axis of the pipeline. Figure 1 and Figure 7 In the illustrated embodiment, the painting mechanism 15 has four paint rollers 17 that are evenly arranged at equal distances along the circumference of the paint toothed ring 16, so that when the paint toothed ring 16 rotates at least 45° clockwise and counterclockwise around the pipe to be painted, the four paint rollers 17 can paint the pipe to be painted over a 360° circumferential range. However, other suitable numbers of paint rollers 17 may also be provided.

[0055] See also Figure 1 The painting mechanism 15 also has a paint tank 24 and a connecting hose 47 connecting the paint tank 24 and the paint roller 17. The paint tank 24 can be installed directly above the mounting tube 1, more precisely on the hinge shaft 20, for example, by means of a tank bracket 48. When painting, the paint is guided to the paint roller 17 through the connecting hose 47 by means of gravity potential energy, more precisely, by connecting the connecting hose 47 to an interface 57 on the housing 55 and guided to the interior of the housing 55 of the paint roller 17. The painting mechanism 15 can also have a valve 49, such as an electric valve, arranged on the connecting hose 47, for opening and closing the supply of paint to the paint roller 17. Figure 1 In the figure, for the sake of clarity, only one paint roller 17 is shown to be connected to the paint tank 24 via a connecting hose 47, and it is self-evident that all paint rollers 17 are connected to the paint tank 24 via the connecting hose 47. However, in some embodiments, the paint tank 24 can also be suspended on the mounting barrel 1 just below the mounting barrel 1, and the paint tank 24 installed in this way can lower the center of gravity of the entire painting system 100, so that the mounting barrel 1 is not easy to rotate relative to the pipeline to be painted. However, in such a case, a paint pump needs to be provided to pump paint to the paint roller 17.

[0056] See also Figure 1, the paint drive mechanism 14 can be arranged on the second barrel half 5 of the installation barrel 1. On the first barrel half 4 of the installation barrel 1, the paint system 100 can be provided with a battery (not shown), which can supply power to the travel drive mechanism 9 and the paint drive mechanism 14. The weight of the battery can be comparable to the weight of the paint drive mechanism 14, so as to help maintain the balance of the installation barrel 1, that is, the installation barrel 1 is not easy to rotate relative to the pipe to be painted.

[0057] Therefore, the main technical effects that can be achieved by the painting system 100 according to the present invention include but are not limited to at least one of the following:

[0058] 1) The painting system 100 can automatically walk on the pipe to be painted and can automatically paint the pipe, thereby avoiding the dangers caused by manual high-altitude operations, while reducing the adverse effects of paint on the health of painters and saving labor costs.

[0059] 2) By adjusting the radial distance between the driving wheel 12 and the supporting wheel 13 and the longitudinal axis of the mounting cylinder 1, pipes with different diameters can be adapted.

[0060] 3) Due to the multi-piece construction of the mounting cartridge 1 and the painting toothed ring 16 , the painting system 100 can be mounted on the pipeline to be painted at any position of the pipeline.

[0061] Finally, it should be pointed out that the above embodiments are only used to understand and explain the present invention, and do not limit the protection scope of the present invention. For those skilled in the art, modifications can be made based on the above embodiments, and all these modifications do not depart from the protection scope of the present invention.

Claims

1. A painting system (100) for painting a pipeline, characterized in that: The painting system comprises: A mounting cylinder (1), the mounting cylinder (1) having a receiving space (7), the receiving space (7) being capable of being penetrated by a pipe to be painted; A walking device (2), the walking device (2) having a walking drive mechanism (9) arranged in the accommodating space (7), the walking drive mechanism (9) having a driving wheel (12) and a first mounting bracket (11), the driving wheel (12) being mounted on the inner side of the mounting cylinder (1) via the first mounting bracket (11), and the driving wheel (12) being capable of being supported on a pipe to be painted so as to drive the mounting cylinder (1) to move along the pipe to be painted; and A paint brushing device (3) comprises a paint brushing drive mechanism (14) and a paint brushing mechanism (15) which can be driven by the paint brushing drive mechanism (14) to perform a paint brushing operation.

2. The painting system (100) according to claim 1, characterized in that: The mounting cylinder (1) comprises a first cylinder half (4) and a second cylinder half (5) which can be hingedly connected to each other via a hinge shaft (20); the first cylinder half (4) and the second cylinder half (5) enclose the accommodating space (7) in a closed state; and / or the first cylinder half (4) and the second cylinder half (5) can be locked to each other via a locking mechanism in a closed state; and / or the driving wheel (12) is mounted on the hinge shaft (20) via the first mounting bracket (11).

3. The painting system (100) according to claim 1 or 2, characterized in that: The driving wheel (12) is equipped with a servo hub motor.

4. The painting system (100) according to any one of claims 1 to 3, characterized in that: A plurality of drive wheels (12) are provided, and the plurality of drive wheels (12) are arranged successively in the accommodating space (7) along the longitudinal direction of the mounting cylinder (1).

5. The painting system (100) according to any one of claims 1 to 4, characterized in that: The walking device (2) further comprises a supporting mechanism (10) arranged in the accommodating space (7), the supporting mechanism (10) comprising a supporting wheel (13) and a second mounting bracket (53), the supporting wheel (13) being mounted on the inner side of the mounting cylinder (1) via the second mounting bracket (53), and the supporting wheel (13) being capable of being supported on a pipe to be painted, and / or being provided with a plurality of rows of supporting wheels (13), each row of supporting wheels (13) comprising at least two supporting wheels (13) arranged successively along the longitudinal direction of the mounting cylinder (1), and each row of supporting wheels (13) being arranged in a spaced-apart distributed manner in the circumferential direction of the mounting cylinder (1).

6. The painting system (100) according to any one of claims 1 to 5, characterized in that: By means of the first mounting bracket (11) of the travel drive mechanism (9), the distance between the drive wheel (12) and the longitudinal axis of the mounting cylinder (1) and / or the pressing force of the drive wheel (12) on the outer surface of the pipe to be painted can be adjusted, and / or by means of the second mounting bracket (53) of the support mechanism (10), the distance between the support wheel (13) and the longitudinal axis of the mounting cylinder (1) and / or the pressing force of the support wheel (13) on the outer surface of the pipe to be painted can be adjusted, and / or the wheel circumference of the drive wheel (12) and / or the support wheel (13) is constructed to be concave so as to adapt to the outer circumference of the pipe to be painted.

7. The painting system (100) according to any one of claims 1 to 6, characterized in that: The paint drive mechanism (14) has a paint toothed ring (16) that can rotate around a pipe to be painted, the paint mechanism (15) has a paint roller (17) and a roller bracket (18), the paint roller (17) is mounted on the paint toothed ring (16) via the roller bracket (18), and / or the paint drive mechanism (14) has a fan-shaped gear member (38), the fan-shaped gear member (38) can reciprocate and swing to drive the paint toothed ring (16) to rotate around the pipe. The pipe to be painted rotates back and forth alternately clockwise and counterclockwise, and / or the paint driving mechanism (14) has a rotatable turntable (35), the turntable (35) has an eccentric guide pin (37), the fan-shaped gear member (38) has a guide slot (41), and the eccentric guide pin (37) can be guided in the guide slot (41), wherein when the turntable (35) rotates, the eccentric guide pin (37) slides back and forth in the guide slot (41) to drive the fan-shaped gear member (38) to rotate. The gear member (38) reciprocates and swings, and / or the paint brushing device (3) has a paint tank (24), the paint tank (24) is connected to the paint brush roller (17) via a hose, and is used to supply paint to the paint brush roller (17), and / or the paint tank (24) is installed above the mounting cylinder (1); or, the paint tank (24) is installed below the mounting cylinder (1), and the paint brushing mechanism (15) has a paint pump, which is used to pump paint to the mounting cylinder (1). The paint roller (17) and / or the paint toothed ring (16) have a first ring half (25) and a second ring half (26) which can be separated from each other, the first ring half (25) and the second ring half (26) can be connected to form a complete circular ring, and / or the distance of the paint roller (17) from the longitudinal axis of the mounting cylinder (1) and / or the squeezing force of the paint roller (17) on the outer surface of the pipe to be painted can be adjusted by means of the roller bracket (18) of the paint mechanism (15).

8. The painting system (100) according to any one of claims 1 to 7, characterized in that: The painting system (100) has a battery for supplying electric energy to the travel drive mechanism (9) and the paint drive mechanism (14), wherein the battery is arranged on the first cylinder half (4) or the second cylinder half (5), and the paint drive mechanism (14) is arranged on the second cylinder half (5) or the first cylinder half (4).

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