A pipeline coating peeling device

Abstract

The present application relates to a kind of pipeline coating peeling device, including flexible track assembly and peeling assembly, flexible track assembly is used to embrace on pipeline, peeling assembly includes shell, hob, peeling piece and two pairs of walking wheels, shell is installed on flexible track assembly;Two pairs of walking wheels are respectively installed at the front and rear ends of the bottom of shell, hob is horizontally rotatably installed at the front end bottom of shell, peeling piece is rotatably installed at the middle or rear end bottom of shell;Shell is also provided with driving assembly, driving assembly is respectively connected with peeling piece and the pair of walking wheels located at the rear end of shell transmission.The beneficial effects of the present application are compact structure, reasonable design, which can realize the rapid peeling of pipeline coating, and will not damage the pipeline, improve the peeling efficiency, and reduce the labor intensity, and it is beneficial to realize the standardization operation of coating peeling, improve the phenomenon of pipeline damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline repair, in particular to a pipeline coating peeling device. BACKGROUND

[0002] Pipeline transportation is widely used in gas, oil, water conservancy and other fields. When the pipeline is transported over a long distance, the length of the pipeline may reach hundreds of kilometers or even thousands of kilometers. Local leakage will inevitably occur in the long-distance pipeline, so pipeline repair is often needed.

[0003] Usually, the outer surface of the above-mentioned long-distance transportation pipeline is provided with a coating. When the pipeline needs to be welded during the repair process, the coating will affect the welding effect. Therefore, based on the actual repair needs, the anti-corrosion coating often needs to be removed.

[0004] The existing removal method is usually manual removal after heating or removal by external force grinding, which has low overall peeling efficiency and is easy to damage the pipeline. SUMMARY

[0005] The present application provides a pipeline coating peeling device to solve the problems in the prior art.

[0006] The technical scheme for solving the above technical problems is as follows:

[0007] A pipeline coating peeling device, comprising a flexible track assembly and a peeling assembly, the flexible track assembly is used to encircle the pipeline, the peeling assembly comprises a shell, a rolling cutter, a peeling piece and two pairs of walking wheels, the shell is installed on the flexible track assembly; the two pairs of walking wheels are respectively installed at the front and rear ends of the bottom of the shell, the rolling cutter is horizontally installed at the front end of the bottom of the shell, and the peeling piece is rotatably installed at the middle or rear end of the bottom of the shell; the shell is also provided with a driving assembly, and the driving assembly is in transmission connection with the peeling piece and the pair of walking wheels located at the rear end of the shell.

[0008] The beneficial effects of the present application are as follows: during the operation, the flexible track assembly and the peeling assembly cooperate to enable the entire pipeline coating peeling device to be clamped on the pipeline and to rotate along the circumference of the pipeline, and the entire power is derived from the driving assembly; in the peeling assembly, the rolling cutter and the peeling piece cooperate, the rolling cutter first rolls along the pipeline to cut the coating on the surface of the pipeline, so that the coating is cut to form independent small areas, and then the peeling piece rubs the cut coating to peel off the coating in each small area, which helps to improve the peeling effect of the coating and has high peeling efficiency.

[0009] The present application has compact structure, reasonable design, can realize the quick peeling of pipeline coating, and will not damage the pipeline, improves the peeling efficiency, and reduces the labor intensity, and is favorable for realizing the standardization operation of coating peeling, improves the pipeline damage phenomenon.

[0010] Based on the above technical solutions, the present application can be further improved as follows.

[0011] Further, the cutting tool comprises a first cutter, the first cutter comprises a straight rod segment and a curved segment, one end of the straight rod segment is connected to the outer periphery of the roller, the other end is connected with the curved segment, and a through hole for entering the coating is formed in the curved segment.

[0012] The beneficial effect of the above further scheme is that during the peeling operation, the whole device is made to walk on the pipeline by rotating the corresponding pair of walking wheels of the driving assembly, in the process, the roller rotates by utilizing the friction between the roller and the pipeline, the roller drives the plurality of cutting tools thereon to roll on the outer periphery of the pipeline to cut the coating of the pipeline, which is convenient, efficient, and has better coating cutting effect.

[0013] Further, the front end of the shell is provided with a roller holder, the roller holder can move and be positioned along the shell (from one side to the other side of the front end); and the rotating shaft is installed on the roller holder.

[0014] The beneficial effect of the above further scheme is that the structure is simple and reasonable, the roller holder is adjustable, and the pressure of the roller on the surface of the pipeline is adjusted to adjust the cutting force, so as to ensure the peeling effect of the pipeline coating.

[0015] Further, the cutting tool comprises a first cutter, the first cutter comprises a straight rod segment and a curved segment, one end of the straight rod segment is connected to the outer periphery of the roller, the other end is connected with the curved segment, and a through hole for entering the coating is formed in the curved segment.

[0016] The beneficial effect of the above further scheme is that the first cutter is provided with a straight rod segment and a curved segment, which can better contact with the coating on the pipeline to better peel the coating, and has better peeling effect.

[0017] Further, the cutting tool comprises a second cutter, the second cutter comprises an auxiliary cutting edge, the auxiliary cutting edge is fixedly installed on one side of the straight rod segment and the curved segment, and is fixedly connected with the curved segment and distributed in T shape.

[0018] The beneficial effect of the above further scheme is that the structure is simple and reasonable, and the auxiliary cutting edge can improve the peeling effect and efficiency of the pipeline coating.

[0019] Further, the peeling member comprises a plurality of peeling heads, and the plurality of peeling heads are respectively horizontally rotatably arranged in the middle or rear end of the bottom of the shell.

[0020] The above further scheme has the beneficial effects of simple structure and reasonable design, and the coating on the pipeline can be quickly peeled off by the peeling heads, and the peeling effect is better.

[0021] Further, each of the peeling heads comprises a rotating base, a plurality of first friction members and a plurality of second friction members, the rotating base is rotatably connected with the shell through a vertically arranged rotating shaft, and the rotating shaft is in transmission connection with the driving assembly; the lower surface of the rotating base is divided into a first region and a second region from inside to outside; the plurality of first friction members are uniformly and spacedly arranged in the first region, and the plurality of second friction members are uniformly and spacedly arranged in the second region.

[0022] The above further scheme has the beneficial effects of simple structure and reasonable design, and the coating on the pipeline can be quickly peeled off by the peeling heads, and the peeling effect is better.

[0023] Further, each of the first friction members comprises a rod body and a friction head, the rod body is arranged perpendicularly to the first region, and one end of the rod body is fixedly connected with the first region; the friction head is fixedly arranged on the other end of the rod body.

[0024] The above further scheme has the beneficial effects of simple structure and reasonable design, and the coating on the pipeline can be quickly peeled off by the peeling heads, and the peeling effect is better.

[0025] Further, the flexible track assembly comprises a plurality of joint bodies, the plurality of joint bodies are sequentially and rotatably connected in a head-to-tail manner, and a rotating assembly is arranged on each of the joint bodies; the shell is located between the first joint body and the last joint body, and the front and rear ends of the shell are rotatably connected with the corresponding ends of the first joint body and the last joint body to form a ring structure to wrap around the pipeline.

[0026] The above further scheme has the beneficial effects of simple structure and reasonable design, and the coating on the pipeline can be quickly peeled off by the peeling heads, and the peeling effect is better.

[0027] Further, each of the rotating assemblies comprises at least one pair of rotating wheels, the two rotating wheels in each pair of rotating wheels are rotatably arranged on the two sides of the corresponding joint body; a plurality of spiral protrusions are uniformly and spacedly arranged on the outer circumference of each of the rotating wheels, and a spiral groove is formed between adjacent two spiral protrusions.

[0028] The beneficial effect of the above further scheme is simple structure and reasonable design, and the whole flexible track assembly can rotate around the pipeline by using multiple rotating wheels to strip the coating on the pipeline; in addition, when the rotating wheel rolls along the circumferential surface of the pipeline, the rotating wheel has an axial force along the pipeline, so that the rotating wheel has a tendency to move axially along the pipeline, and when the driving force is greater than the axial friction force, the flexible track assembly rotates circumferentially around the pipeline while moving axially along the pipeline, to achieve the effect of stripping the coating on the pipeline in a large area. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic view of stripping the pipeline coating in the present application;

[0030] Figure 2 is a structural schematic view of stripping the pipeline coating in the present application;

[0031] Figure 3 is one of the assembly views of the flexible track assembly and the stripping assembly in the present application;

[0032] Figure 4 is one of the assembly views of the flexible track assembly and the stripping assembly in the present application;

[0033] Figure 5 is a structural schematic view of the rotating wheel in the present application;

[0034] Figure 6 is one of the structural schematic views of the stripping assembly in the present application;

[0035] Figure 7 is a structural schematic view of the stripping assembly in the present application;

[0036] Figure 8 is a structural schematic view of the stripping assembly in the present application;

[0037] Figure 9 is a bottom view of the stripping assembly in the present application;

[0038] Figure 10 is a three-dimensional structural schematic view of the milling cutter in the present application;

[0039] Figure 11 is an end view of the milling cutter in the present application;

[0040] Figure 12 is one of the partial structural schematic views of the milling cutter in the present application;

[0041] Figure 13 is one of the partial structural schematic views of the milling cutter in the present application;

[0042] Figure 14Fig. 1 is a schematic view of a structure of a peeling head in the present application;

[0043] Figure 15 Fig. 2 is a schematic view of a structure of a first embodiment of a friction head in the present application;

[0044] Figure 16 Fig. 3 is a schematic view of a structure of a second embodiment of a friction head in the present application;

[0045] Figure 17 Fig. 4 is a schematic view of a structure of a driving assembly in the present application.

[0046] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0047] 100, flexible track assembly; 110, joint body; 120, rotating wheel; 121, helical protrusion; 200, peeling assembly; 210, housing; 220, hob; 221, roller; 222, cutting knife; 2221, straight rod segment; 2222, curved segment; 2223, auxiliary cutting edge; 2224, through hole; 223, rotating shaft; 224, elastic member; 230, peeling head; 231, rotating base body; 232, first friction member; 233, second friction member; 2321, rod body; 2322, friction head; 234, first region; 235, second region; 241, roller holder; 242, guide shaft; 243, screw rod; 244, walking wheel; 251, motor; 252, driving cylindrical gear; 253, driven cylindrical gear; 254, driving bevel gear; 255, driven bevel gear; 256, driving pulley; 257, driven pulley; 258, driving belt; 259, friction pulley; 260, driven belt; 300, pipeline. DETAILED DESCRIPTION

[0048] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] Example 1

[0053] like Figures 1 to 17 As shown, this embodiment provides a pipe coating stripping device, including a flexible track assembly 100 and a stripping assembly 200. The flexible track assembly 100 is used to wrap around the pipe 300. The stripping assembly 200 includes a housing 210, a roller 220, a stripping component, and two pairs of traveling wheels 244. The housing 210 is mounted on the flexible track assembly 100. The two pairs of traveling wheels 244 are rotatably mounted at the front and rear ends of the bottom of the housing 210, respectively. The roller 220 is horizontally rotatably mounted at the bottom of the front end of the housing 210. The stripping component is rotatably mounted at the middle or bottom of the rear end of the housing 210. A drive assembly is also mounted on the housing 210. The drive assembly is connected to the stripping component and the pair of traveling wheels 244 located at the rear end of the housing 210.

[0054] During the operation, the whole pipe coating peeling device can be buckled on the pipe 300 and can rotate along the circumference of the pipe through the cooperation of the flexible track assembly 100 and the peeling assembly 200, and the whole power is derived from the driving assembly; in the peeling assembly 200, the first cutting of the coating on the surface of the pipe 300 is realized through the cooperation of the hob 220 and the peeling piece, the coating is cut to form a plurality of independent small areas, and then the peeling piece is used to rub the cut coating to remove the coating in each small area, which helps to improve the peeling removal effect of the coating and has high peeling efficiency.

[0055] Preferably, in the embodiment, the shell 210 is preferably a frame-shaped structure, which is reasonable in design and facilitates the installation of various components.

[0056] The embodiment has compact structure, reasonable design, can realize the rapid peeling of the pipe coating, and will not damage the pipe, improves the peeling efficiency, reduces the labor intensity, and is beneficial to realize the standardized operation of the coating peeling and improve the pipe damage phenomenon.

[0057] Embodiment 2

[0058] On the basis of embodiment 1, in the embodiment, the hob 220 comprises a roller 221, a rotating shaft 223 and a plurality of cutting knives 222, the rotating shaft 223 is horizontally rotatably installed at the front end of the bottom of the shell 210, and a pair of the walking wheels 244 are coaxially fixedly sleeved on both ends of the rotating shaft 223; the roller 221 is coaxially sleeved outside the rotating shaft 223 and is connected with the rotating shaft 223 through the elastic member 224; and the plurality of cutting knives 222 are arrayed on the roller 221.

[0059] During the peeling operation, the corresponding pair of walking wheels rotates to make the whole device walk on the pipe, in the process, the roller rotates by utilizing the friction between the roller and the pipe, the plurality of cutting knives on the roller roll on the outer circumferential surface of the pipe 300 to cut the coating of the pipe 300, which is convenient and efficient, and the cutting effect of the coating is better.

[0060] Preferably, in the embodiment, the roller 221 has a cylindrical structure with both ends open.

[0061] In addition, the elastic member 224 comprises a plurality of springs, the plurality of springs are respectively installed between the rotating shaft 223 and the roller 221 and are divided into a plurality of groups, the plurality of groups of springs are uniformly and spacedly distributed along the axis of the rotating shaft 223, the plurality of springs in each group are uniformly and spacedly distributed along the circumference of the roller 221, and both ends of each spring are fixedly connected with the roller 221 and the rotating shaft 223.

[0062] Preferably, in the embodiment, each group of springs is preferably eight, and the eight springs are evenly spaced along the circumference of the roller 221, forming an octagonal structure as a whole.

[0063] In addition, in order to facilitate the installation of each elastic member 224, the rotating shaft 223 is provided with an octagonal structure at the corresponding position, which can be integrally formed on the rotating shaft 223, or can also be fixed on the rotating shaft 223 by an octagonal shaft sleeve. One end of each elastic member 224 is connected to one side of the octagonal structure.

[0064] Preferably, in the embodiment, each elastic member 224 is preferably a cylindrical coil spring. In order to ensure stable installation, a positioning protrusion 225 is provided on each side of the octagonal structure, and the elastic member 224 is inserted into the positioning protrusion. The other end of the elastic member 224 is connected to the inner wall of the roller 221. The elastic member 224 preferably has a relatively large elastic coefficient, i.e., a spring with slightly greater rigidity, which ensures sufficient cutting force while ensuring the floating of the roller 221.

[0065] In addition, this arrangement allows the rolling cutter 220 to produce a rubbing effect during rotation along the pipeline, which facilitates cutting of the coating and also produces a rubbing effect on the cut coating, facilitating separation of the coating from the pipeline.

[0066] In other alternative embodiments, the elastic member 224 can also use known elastic structures such as elastic sleeves and disc springs.

[0067] In the embodiment, the above-mentioned rolling cutter 220 functions to cut the coating of the pipeline. Based on the manufacturing error of the pipeline 300, the outer surface of the pipeline 300 may have uneven positions. In combination with the error of the coating spraying process, the coating surface is also likely to have uneven positions. Therefore, if the rolling cutter 220 is rigidly pressed against the outer surface of the pipeline 300, when it rolls to the uneven position of the pipeline 300, it is likely to damage the pipeline 300 or the rolling cutter due to sudden changes in cutting force. Therefore, in the embodiment, the rolling cutter is arranged in a floating structure.

[0068] Alternatively, one pair of the above-mentioned walking wheels 244 can also be directly mounted on the bottom of the housing 210 on both sides of the front end.

[0069] Embodiment 3

[0070] Based on embodiment 2, in the embodiment, a roller holder 241 is mounted at the front end of the housing 210, and the roller holder 241 can move and be positioned along the direction from one side to the other side of the front end of the housing 210. The rotating shaft 223 is mounted on the roller holder 241.

[0071] The scheme has simple structure and reasonable design, the roller holder 241 is adjustable, thereby adjusting the pressure of the roller 221 on the surface of the pipeline 300 to adjust the cutting force and ensure the stripping effect of the pipeline coating.

[0072] Preferably, in the embodiment, the roller holder 241 is preferably a U-shaped holder, the rotating shaft 223 is horizontally rotatable and is mounted in the open end of the U-shaped holder, and the two ends of the rotating shaft 223 extend to the outside of the two sides of the open end of the U-shaped holder, respectively; one pair of walking wheels 244 is coaxially fixedly sleeved on the two ends of the rotating shaft 223; the front end of the shell 210 is threadedly mounted with a screw rod 243, the screw rod 243 extends along the direction from one side of the shell 210 to the other side, one end of the screw rod 243 is rotatably connected with the closed end of the roller holder 241, and the other end of the screw rod 243 extends to the outside of the shell 210 and is fixedly connected with a handle.

[0073] In addition, the two sides of the closed end of the roller holder 241 are fixedly connected with guide shafts 242, and the two guide shafts 242 are respectively arranged perpendicular to the closed end of the roller holder 241, and the other ends of the two guide shafts 242 are respectively slidably connected with the shell 210.

[0074] Furthermore, springs are coaxially and slidably sleeved on the two guide shafts 242, respectively, and the two ends of the two springs are respectively abutted against the outside of the closed end of the roller holder 241 and the shell 210.

[0075] Based on the above scheme, when the hob 220 is arranged to be non-adjustable, at this time, the two pairs of walking wheels 244 can be respectively drivingly connected with the driving assembly.

[0076] Embodiment 4

[0077] On the basis of any one of Embodiments 2 to 3, in the embodiment, the cutting knife 222 comprises a first knife, and the first knife comprises a straight rod segment 2221 and a curved segment 2222, one end of the straight rod segment 2221 is connected to the outer circumferential surface of the roller 221, and the other end of the straight rod segment 2221 is connected with the curved segment 2222; a through hole 2224 for entering the coating is formed in the curved segment 2222.

[0078] The first knife is arranged as the straight rod segment 2221 and the curved segment 2222, which can better contact the coating on the pipeline 300, so as to better strip the coating and achieve a better stripping effect.

[0079] Preferably, in the embodiment, the free end of the curved segment 2222 serves as the cutting edge, and the curved segment 2222 is circumferentially curved along the pipeline.

[0080] Preferably, in the embodiment, each cutting knife 222 is a hollow rhombus in whole, each cutting knife has four cutting edges, and the long diagonal of the cutting knife 222 extends along the circumferential direction of the roller 221. The cutting knife 222 can be formed by machining rhombic grooves in an array on the outer surface of the roller 221 to form rhombic cutting edges, and each cutting knife shares a cutting edge with an adjacent cutting knife. The long diagonal of the cutting knife 222 extends along the circumferential direction of the roller 221, that is, the length direction of the cutting knife 222 extends along the circumferential direction of the roller 221. The sharpness of the cutting edge of the cutting knife 222 can be adjusted adaptively based on actual use requirements.

[0081] During operation, the cutting knife 222 arranged as described above will cut a rhombic cutting seam on the outer surface of the pipe as the roller 221 rotates, forming a plurality of rhombic cutting regions, and the long diagonal of the rhombic cutting region extends along the circumferential direction of the pipe, that is, the acute angle of the rhombic cutting region extends along the circumferential direction of the pipe. Therefore, the coating in the rhombic cutting region is easy to cause the acute angle part to be lifted off the outer surface of the pipe due to its own deformation, and at this time, the corresponding lifted coating is easy to be frictionally stripped by the stripping head 230.

[0082] In addition, the bending section 2222 is bent in the counterclockwise direction, the roller 221 rolls in the counterclockwise direction, the free end of the bending section 2222 acts as the cutting edge, and the bending section 2222 first penetrates into the coating of the pipe when the roller 221 rolls. As the roller 221 continues to rotate, the angle of the bending section 2222 relative to the pipe changes, and the bending section 2222 forms a lifting coating effect after penetrating into the coating, which is beneficial to the separation of the coating from the pipe.

[0083] Alternatively, in the embodiment, the cutting knife 222 can also be provided as a curved structure, and when the roller 221 rolls, the curved segment 2222 first pierces into the coating of the pipeline. With the continuous rotation of the roller 221, the angle of the curved segment 2222 relative to the pipeline changes, and after the curved segment 2222 pierces into the coating, it will form a function of lifting the coating, which is beneficial to the separation of the coating and the pipeline. In addition, the cutting knife 222 is in a T-shaped structure, the cutting edge of the curved segment 2222 is used to cut the coating along the axial direction of the pipeline, and the auxiliary cutting edge 2223 is used to cut the coating along the circumferential direction. Then a T-shaped incision is formed on the surface of the pipeline, and in combination with the lifting function of the curved segment 2222, the inserted layer that is pierced is lifted along the middle part to both sides, which is convenient for the subsequent frictional peeling of the coating. A through hole 2224 for the coating to enter is formed on the curved segment 2222. The through hole is formed along the cutting direction of the curved segment 2222, so that when the curved segment 2222 pierces into the coating, part of the coating enters the through hole 2224. At this time, when the curved segment 2222 moves away from the pipeline with the continuous rotation of the roller 221, the coating in the through hole 2224 will pull the remaining coating, so as to achieve the effect of separating or expanding the separation of the coating and the pipeline. In addition, the through hole 2224 is provided in a penetrating manner, so that the newly entered coating in the through hole 2224 will extrude the original coating in the through hole 2224 to discharge the original coating.

[0084] Embodiment 5

[0085] Based on the embodiment 4, in the embodiment, the cutting knife 222 comprises a second cutter, and the second cutter comprises an auxiliary cutting edge 2223, which is fixedly installed on one side of the straight rod segment 2221 and the curved segment 2222 and is fixedly connected with the curved segment 2222 and is in a T-shaped distribution.

[0086] The scheme has simple structure and reasonable design, and the auxiliary cutting edge 2223 can improve the peeling effect and efficiency of the pipeline coating.

[0087] Preferably, in the embodiment, the cutting edge of the curved segment 2222 is used to cut the coating along the axial direction of the pipeline, and the auxiliary cutting edge 2223 is used to cut the coating along the circumferential direction.

[0088] In addition, the cutting edge of the curved segment 2222 is used to cut the coating along the axial direction of the pipeline, and the auxiliary cutting edge 2223 is used to cut the coating along the circumferential direction. Then a T-shaped incision is formed on the surface of the pipeline, and in combination with the lifting function of the curved segment 2222, the inserted layer that is pierced is lifted along the middle part to both sides, which is convenient for the subsequent frictional peeling of the coating.

[0089] Moreover, the bending section 2222 is provided with a through hole 2224 for the coating to enter. The through hole is provided along the cutting direction of the bending section 2222, so that when the bending section 2222 penetrates into the coating, a part of the coating enters the through hole 2224, and when the bending section 2222 continues to rotate away from the pipeline with the roller 221, the coating in the through hole 2224 will pull the remaining coating to achieve the effect of separating or expanding the separation of the coating from the pipeline. In addition, the through hole 2224 is provided through, so that the newly entered coating in the through hole 2224 will extrude the original coating in the through hole 2224 to discharge the original coating.

[0090] Embodiment 6

[0091] Based on the above-mentioned embodiments, in this embodiment, the stripping member includes a plurality of stripping heads 230, and the plurality of stripping heads 230 are respectively horizontally rotatably installed at the bottom of the shell 210.

[0092] This scheme has simple structure and reasonable design, and the cut coating on the pipeline 300 can be quickly stripped by the stripping head 230, and the stripping effect is better.

[0093] Preferably, in this embodiment, the above-mentioned stripping head 230 is preferably three, and the three stripping heads 230 are triangularly distributed at the bottom of the shell 210.

[0094] In other alternative embodiments, more stripping heads 230 can be provided, and the number and arrangement position thereof can be adaptively adjusted based on actual use requirements.

[0095] Embodiment 7

[0096] Based on the embodiment 6, in this embodiment, each of the stripping heads 230 includes a rotating base 231, a plurality of first friction members 232 and a plurality of second friction members 233. The rotating base 231 is rotatably connected with the shell 210 through a vertically arranged rotating shaft, and the rotating shaft is in transmission connection with the driving assembly. The lower surface of the rotating base 231 is divided into a first region 234 and a second region 235 from inside to outside. The plurality of first friction members 232 are uniformly and spacedly distributed in the first region 234, and the plurality of second friction members 233 are uniformly and spacedly distributed in the second region 235.

[0097] This scheme has simple structure and reasonable design, and the coating on the surface of the pipeline 300 can be stripped and removed by the first friction members 232 and the second friction members 233 during stripping, and the stripping effect is better.

[0098] Preferably, in this embodiment, the above-mentioned rotating base 231 is preferably a disc-shaped structure.

[0099] In addition, the first region 234 is a circular region, and the second region 235 is an annular region and surrounds the first region 234.

[0100] It should be noted that the plurality of stripping heads 230 are completely identical in structure, and only one rotating base 231 is shown in the drawings for the sake of distinction.

[0101] Based on the above scheme, the driving assembly includes a motor 251, a driving cylindrical gear 252, a driven cylindrical gear 253, a driving bevel gear 254, a driven bevel gear 255, a driving pulley 256, a driven pulley 257, a driving belt 258, and a friction pulley 259 and a driven belt 260.

[0102] The motor 251 is fixedly installed inside the housing 210, the rotor of the motor 251 is in transmission cooperation with the driving cylindrical gear 252, the driving cylindrical gear 252 is in meshing with the driven cylindrical gear 253, and the driven cylindrical gear 253 is in transmission cooperation with the rotating shaft of the pair of walking wheels 244 located at the rear end of the housing 210. Therefore, the motor 251 can drive and rotate the stripping assembly 200 and the corresponding walking wheels 244, and when the walking wheels 244 roll along the surface of the pipeline, each rotating wheel 120 of the flexible track assembly can adaptively roll along the surface of the pipeline.

[0103] The driving bevel gear 254 is in transmission cooperation with the rotating shaft of the pair of walking wheels 244 located at the rear end of the housing 210, the driven bevel gear 255 is rotatably installed inside the housing 210, and the driving bevel gear 254 is in meshing with the driven bevel gear 255. The driven bevel gear 255 and the driving pulley 256 are installed on the same rotating shaft, so that the driven bevel gear 255 drives the driving pulley 256 to rotate, the driving pulley 256 is in transmission cooperation with the driven pulley 257 through the driving belt 258, the driven pulley 257 and the friction pulley 259 are installed on the same shaft and are rotatably arranged inside the housing 210, the friction pulley 259 has three, each of which is matched with one of the stripping heads 230, and the three friction pulleys 259 are in transmission cooperation through the driven belt 260. Therefore, the power of the motor 251 is transmitted to each friction pulley 259 through the driving bevel gear 254, the driven bevel gear 255, the driving pulley 256, the driving belt 258, the driven pulley 257 and the driven belt 260 in sequence, and the friction pulley 259 drives each stripping head 230 to rotate.

[0104] Preferably, in the present embodiment, a tensioning device (existing technology) can be arranged inside the housing 210 to tension the driven belt 260, so as to ensure that the driven belt 260 has a large embracing angle for each friction pulley 259.

[0105] Alternatively, in other alternative embodiments, a plurality of motors can be arranged inside the housing 210 to respectively rotate the two pairs of walking wheels 244 and the stripping head 230, or other known transmission structures can be used.

[0106] In this embodiment, the stripping head 230 is divided into different regions, and the first friction member 232 and the second friction member 233 with different rigidities are arranged, which is beneficial to provide different friction forces to the outer surface of the pipeline 300 to improve the stripping effect.

[0107] In this embodiment, the first friction member 232 and the second friction member 233 are preferably steel wires, and the diameter of the steel wire of the first friction member 232 is smaller than that of the second friction member 233.

[0108] In addition, the first friction member 232 and the second friction member 233 are both steel wires, and the length of the second friction member 233 is shorter than that of the first friction member 232. That is, the steel wire in the central region of the rotating base 231 has a shorter length and a larger rigidity, and the steel wire in the periphery of the rotating base 231 has a longer length and a smaller rigidity. On the one hand, it is beneficial to cover a larger friction surface to improve the friction peeling effect. On the other hand, the first friction member 232 and the second friction member 233 can provide different friction forces to the pipeline; when the rotating base 231 rotates around the pipeline with the housing 210, the rotating base 231 simultaneously rotates, the first friction member 232 in the first region 234 first contacts the target region of the pipeline to provide a smaller friction force, to preliminarily realize friction and preliminarily separate the cut coating from the surface of the pipeline, as the rotating base 231 continues to rotate around the pipeline, the second friction member 233 in the second region 235 contacts the target region of the pipeline to provide a larger friction force, to completely separate the cut coating from the surface of the pipeline, as the rotating base 231 continues to rotate around the pipeline, the first friction member 232 in the first region 234 again contacts the target region of the pipeline to provide a smaller friction force, to form a tail-sweeping stage and play a role in consolidating peeling and sweeping.

[0109] In this embodiment, the projections of the second regions 235 of the stripping heads 230 along the circumferential direction of the pipeline are connected. That is, there is no gap between the second regions 235 in the axial direction of the pipeline, so that the friction regions of the second friction members 233 of the stripping heads 230 are connected in the axial direction of the pipeline.

[0110] In addition, each of the stripping heads 230 is divided into different regions, and the first friction member 232 and the second friction member 233 with different rigidities are arranged, which is beneficial to provide different friction forces to the outer surface of the pipeline to improve the peeling effect.

[0111] Embodiment 8

[0112] In this embodiment, each of the first friction members 232 comprises a rod body 2321 and a friction head 2322. The rod body 2321 is arranged perpendicularly to the first area 234 and is fixedly connected to one end of the first area 234. The friction head 2322 is fixedly mounted on the other end of the rod body 2321.

[0113] This scheme has simple structure and reasonable design. The friction head 2322 is used to rub the coating on the surface of the pipeline 300 during peeling, so that the coating on the surface of the pipeline can be quickly removed, and the peeling effect is better.

[0114] Preferably, the rod body 2321 has a straight rod structure and a circular cross section.

[0115] In addition, the friction head 2322 has an inverted conical structure, and the thin end is on the other end of the rod body 2321.

[0116] Preferably, each friction head 2322 has a protrusion on the end face for rubbing the coating.

[0117] In this embodiment, the first friction member 232 comprises a rod body 2321 and a friction head 2322. One end of the rod body 2321 is connected to the outer end of the rotating base 231, and the other end is connected to the friction head 2322. The outer surface of the friction head 2322 has a protrusion for rubbing the coating. The second friction member 232 is a steel wire, and the diameter of the steel wire is smaller than the diameter of the rod body 2321. The rod body 2321 can also be a steel wire or a plastic rod. The friction head 2322 is preferably a metal head. The length of the second friction member 233 is shorter than the length of the first friction member 232.

[0118] Embodiment 9

[0119] In this embodiment, the flexible track assembly 100 comprises a plurality of joint bodies 110. The joint bodies 110 are sequentially connected end to end, and each has a rotating assembly mounted thereon. The shell 210 is located between the first joint body 110 and the last joint body 110. The front and rear ends of the shell 210 are rotatably connected to the corresponding ends of the first joint body 110 and the last joint body 110, respectively, and form a ring structure to enclose the pipeline 300.

[0120] This scheme has simple structure and reasonable design. The plurality of joint bodies 110 and the shell 210 form a ring structure to enclose the pipeline 300, so that the peeling assembly 200 can quickly peel the coating on the pipeline 300 during rotation.

[0121] Preferably, in the embodiment, each joint body 110 is in the shape of a long strip plate, one end of which is provided with a U-shaped groove penetrating through both sides, and the other end is provided with a protrusion. When assembled, the protrusion at the other end of one of the two adjacent joint bodies 110 extends into the groove at one end of the other joint body 110, and is rotatably connected to the two sides of the groove through a pin shaft.

[0122] In the embodiment, the diameter of the closed loop formed by the flexible track can be adjusted by increasing or decreasing the number of joint bodies 110 to adapt to different specifications of the pipeline.

[0123] Alternatively, at least one of the joint bodies 110 is provided in a telescopic structure (prior art) to adjust the diameter of the closed loop formed by the flexible track.

[0124] Embodiment 10

[0125] Based on Embodiment 9, in the embodiment, each rotating assembly includes at least one pair of rotating wheels 120, two rotating wheels 120 in each pair of rotating wheels 120 are rotatably mounted on both sides of the corresponding joint body 110, and a plurality of spiral protrusions 121 are uniformly spaced on the outer circumference of each rotating wheel 120, and a spiral groove is formed between adjacent two spiral protrusions 121.

[0126] This scheme has simple structure and reasonable design, and multiple pairs of rotating wheels 120 can be used to rotate the entire flexible track assembly 100 around the pipeline 300, so as to strip the coating on the pipeline 300 by the stripping assembly 200. In addition, through the arrangement of the spiral protrusions 121, when the rotating wheel 120 rolls along the outer circumferential surface of the pipeline 300, the rotating wheel 120 has an axial force along the pipeline 300, so that the rotating wheel 120 has a tendency to move axially along the pipeline 300. When the driving force is greater than the axial friction force, the flexible track assembly 100 rotates circumferentially around the pipeline 300 while moving axially along the pipeline 300, so as to achieve the effect of stripping a large area of the pipeline coating.

[0127] Preferably, in the embodiment, the outer circumference of each rotating wheel 120 is made of rubber material to avoid damaging the pipeline 300.

[0128] The working principle of the present application is as follows:

[0129] During the operation, the whole pipeline coating peeling device can be buckled on the pipeline 300 through the cooperation of the flexible track assembly 100 and the peeling assembly 200, and can rotate along the circumference of the pipeline, and the whole power is derived from the driving assembly; in the peeling assembly 200, through the cooperation of the hob 220 and the peeling piece, firstly, the hob 220 rolls along the pipeline 300, cuts the coating on the surface of the pipeline 300, so that the coating is cut to form each independent small area, and then the peeling piece rubs the cut coating to peel off the coating in each small area, which helps to improve the peeling removal effect of the coating and has high peeling efficiency.

[0130] In the application, the anticorrosive layer on the pipeline is realized full automation, and the anticorrosive layer is accurately removed without using heating (or burning) and without damaging the pipeline body.

[0131] It should be noted that each electronic component involved in the application adopts the prior art, and each component is electrically connected with the controller, and the control circuit between the controller and each component is the prior art.

[0132] It is apparent to those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the application can be implemented in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the application is defined by the appended claims rather than the above description, and it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0133] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0134] The above is only the preferred embodiment of the application, and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application should be included in the protection scope of the application.

Claims

1. A pipe coating disbanding apparatus characterized by: The utility model provides a stripping device for pipeline, which comprises a flexible track assembly (100) and a stripping assembly (200), the flexible track assembly (100) is used for embracing on a pipeline (300), the stripping assembly (200) comprises a shell (210), a rolling cutter (220), a stripping piece and two pairs of walking wheels (244), the shell (210) is installed on the flexible track assembly (100), two pairs of the walking wheels (244) are respectively rotatably installed at the front and rear ends of the bottom of the shell (210), the rolling cutter (220) is rotatably installed at the front end bottom of the shell (210), and the stripping piece is rotatably installed at the middle or rear end bottom of the shell (210), a driving assembly is further installed on the shell (210), and the driving assembly is respectively in transmission connection with the stripping piece and the pair of walking wheels (244) located at the rear end of the shell (210), the rolling cutter (220) comprises a roller (221), a rotating shaft (223) and a plurality of cutting knives (222), the rotating shaft (223) is rotatably installed at the front end of the bottom of the shell (210), and one pair of the walking wheels (244) is coaxially fixedly sleeved at the two ends of the rotating shaft (223), the roller (221) is coaxially sleeved outside the rotating shaft (223) and is connected with the rotating shaft (223) through an elastic piece (224), and a plurality of the cutting knives (222) are arrayed on the roller (221), the cutting knife (222) comprises a first cutter, the first cutter comprises a straight rod section (2221) and a curved section (2222), one end of the straight rod section (2221) is connected to the outer circumferential surface of the roller (221), the other end is connected with the curved section (2222), a through hole (2224) for entering a coating is formed in the curved section (2222), the stripping piece comprises a plurality of stripping heads (230), a plurality of the stripping heads (230) are rotatably installed at the middle or rear end bottom of the shell (210), each stripping head (230) comprises a rotating base (231), a plurality of first friction pieces (232) and a plurality of second friction pieces (233), the rotating base (231) is rotatably connected with the shell (210) through a vertically arranged rotating shaft, and the rotating shaft is in transmission connection with the driving assembly, the lower surface of the rotating base (231) is divided into a first region (234) and a second region (235) from inside to outside, a plurality of the first friction pieces (232) are uniformly and interval arranged in the first region (234), and a plurality of the second friction pieces (233) are uniformly and interval arranged in the second region (235).

2. The pipe coating strippmg device of claim 1, wherein: A roller holder (241) is installed at the front end of the shell (210), the roller holder (241) can move and be positioned along the direction from one side to the other side of the front end of the shell (210), and the rotating shaft (223) is installed on the roller holder (241).

3. The pipe coating strippmg device of claim 1, wherein: The cutting knife (222) comprises a second cutter, and the second cutter comprises an auxiliary cutting edge (2223) fixedly installed on one side of the straight rod segment (2221) and the curved segment (2222) and fixedly connected with the curved segment (2222) and distributed in a T shape.

4. The pipe coating strippmg device of claim 1, wherein: Each first friction member (232) comprises a rod body (2321) and a friction head (2322), the rod body (2321) is arranged perpendicularly to the first area (234) and fixedly connected with the first area (234) at one end, and the friction head (2322) is fixedly installed on the other end of the rod body (2321).

5. The pipe coating strippmg apparatus of any one of claims 1-3, wherein: The flexible track assembly (100) comprises a plurality of joint bodies (110), the joint bodies (110) are sequentially and rotatably connected end to end, and each of the joint bodies (110) is provided with a rotating assembly; the shell (210) is located between the first joint body (110) and the last joint body (110), and the front and rear ends of the shell (210) are rotatably connected with the corresponding ends of the first joint body (110) and the last joint body (110) and form a ring structure to wrap around the pipeline (300).

6. The pipe coating strippmg device of claim 5, wherein: Each rotating assembly comprises at least one pair of rotating wheels (120), the two rotating wheels (120) in each pair of rotating wheels (120) are rotatably installed on the two sides of the corresponding joint body (110), and a plurality of spiral protrusions (121) are uniformly and spacedly arranged on the outer circumferences of each rotating wheel (120), and spiral grooves are formed between adjacent two spiral protrusions (121).

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