Pipeline cleaning machine

Abstract

The invention discloses a pipeline cleaning machine which comprises a motor, a cleaning brush is coaxially and fixedly arranged at the tail end of a rotating shaft of the motor, the rotating shaft of the motor is in transmission connection with two sets of driving feeding assemblies working alternately, a jacking driven assembly is arranged at the other end, away from the rotating shaft, of a motor shell, and a coupler is arranged at the rotating shaft of the motor. The driving feeding assembly comprises a jacking advancing assembly and a constant-diameter advancing assembly, and the middle of a coupler is rotationally connected with a brush mounting shaft. The self-driven motor is arranged, so that power for advancing or retreating in a pipeline can be obtained through the self-driven motor; the device is provided with the two sets of active feeding assemblies which can be used alternately, one set of active feeding assemblies can bear more friction force in the place with the large pipe diameter, and the two sets of active feeding assemblies can jointly output power to pull the whole device to move forwards in the place with the small pipe diameter so as to avoid the slipping situation.

Description

Technical Field

[0001] The present invention relates to the technical field related to pipeline cleaning equipment, and in particular to a pipeline cleaning machine. Background Art

[0002] Pipes buried deep underground will be infiltrated by deep water, so after long-term use, the inner wall of the pipe will oxidize, and loose residue will accumulate on the pipe wall. Regular cleaning is required to prevent the residual residue on the inner wall of the pipe from mixing with the liquid and affecting the quality of the liquid. At this time, a pipe cleaning mechanism is needed to clean the pipe. Before extraction, there is pressure in the pipe, and groundwater will infiltrate and flow. After using a brush to brush off the residual residue on the inner wall of the pipe, the flowing water can flush these residues out of the pipe to ensure the subsequent liquid quality. Generally, the early development of the pipeline uses a drilling motor, so some equipment for cleaning the pipeline will be powered by a drilling motor.

[0003] The existing one is a portable pipe cleaning mechanism, and the application number is 202420009164.X discloses a portable pipe cleaning mechanism, including a short pipe body, the short pipe body is connected to a shell, a rotating shaft rotates in the shell, one end of the rotating shaft extends to the outside of the shell and is fixed with a rotating handle, a connecting rope is wrapped in the rotating shaft, a steel connecting piece is fixed to one end of the connecting rope, the connecting rope is connected to a cleaning brush through the steel connecting piece, and a brush made of plastic material is provided on the surface of the cleaning brush.

[0004] This cleaning mechanism relies on the impact of the water flow to gain kinetic energy and move forward for cleaning, so the cleaning may not be thorough and complete.

[0005] However, pipes of different diameters may be connected together, so during the cleaning process, the cleaner will pass through places where the diameter changes. There is currently a pipeline internal cleaning robot with document number CN115228857B. Although this type of cleaner has self-sufficient driving force, it is large in size and its size is fixed. It cannot easily pass through places with small pipe diameters. In a vertical pipeline environment, one side of the cleaner will collide and rub against the inner wall of the pipeline, so further improvement is needed. Summary of the invention

[0006] The object of the present invention is to provide a pipeline cleaning machine to overcome the deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions: The pipe cleaning machine comprises a motor, a cleaning brush is coaxially fixedly arranged at the end of the motor's rotating shaft, the motor's rotating shaft is connected to two sets of active feeding components that work alternately through a transmission, a lifting driven component is arranged at the other end of the motor housing away from the rotating shaft, a coupling is arranged at the rotating shaft of the motor, the active feeding component comprises a lifting travel component and a constant diameter travel component, and a brush mounting shaft is rotatably connected in the middle of the coupling.

[0008] To further explain, the brush mounting shaft is fixedly provided with a transmission member, and the brush mounting shaft is transmission-connected to the lifting and traveling assembly and the constant diameter traveling assembly through the transmission member, and at least two spring mounting seats are fixedly provided on the outer side wall of the motor housing, and the two spring mounting seats are respectively provided at the two ends of the motor housing, and the spring mounting seat includes a convex edge extending toward the outer peripheral side, and a plurality of inclined spring limit columns are fixedly provided in a ring array on the convex edge.

[0009] To further explain, the coupling is fixedly connected to the housing of the motor, the rotating shaft of the motor extends into the coupling and is fixedly connected coaxially with the brush installation shaft, and a cleaning brush is fixedly inserted at the other end of the brush installation shaft.

[0010] To further explain, the jacking and traveling assembly includes a plurality of bevel gear mounting plates arranged in a circular array on the top of the coupling, the bevel gear mounting plate is rotatably plugged with a first rotating shaft, the first rotating shaft extends outward on both sides of the bevel gear mounting plate respectively, one end of the first rotating shaft is fixedly provided with a small bevel gear for engaging with a transmission member of the brush mounting shaft, the other end of the first rotating shaft is fixedly provided with a single-belt step sprocket, one side of the single-belt step sprocket is rotatably connected with a sprocket mounting plate, the other side of the sprocket mounting plate is hinged with a traveling wheel for abutting against the inner wall of the pipe, the single-belt step sprocket is drivingly connected to the traveling wheel; a spring is fixedly provided on one side wall of the sprocket mounting plate, one end of the spring is sleeved on the spring limiting column.

[0011] To further explain, the constant diameter travel assembly includes a plurality of sprocket mounting short plates and a plurality of transmission assemblies fixed in a circular array on the top of the coupling, the brush mounting shaft is equipped with a transmission member, the brush mounting shaft is connected to the sprocket mounting short plate through the transmission member and the transmission assembly, a travel wheel is hinged at one end of the sprocket mounting short plate, and the brush mounting shaft is used to control the rotation of the travel wheel of the sprocket mounting short plate.

[0012] To further explain, the brush mounting shaft is fixedly provided with a spur gear, one end of the sprocket mounting short plate is hinged with a second rotating shaft, the second rotating shaft is fixedly provided with a bevel gear, the transmission assembly includes a positioning shaft, the positioning shaft is sleeved with a bevel gear and a spur gear, the bevel gear arranged on the positioning shaft is meshed with the bevel gear of the second rotating shaft, and the spur gear on the positioning shaft is meshed with the spur gear on the brush mounting shaft.

[0013] To further explain, the jacking driven assembly includes a plurality of positioning mounting plates arranged in a circular array at one end of the bottom of the motor housing, one end of the positioning mounting plate is rotatably connected to a driven wheel mounting plate, the end of the driven wheel mounting plate is rotatably connected to a traveling driven wheel, a spring is fixedly provided on one side wall of the driven wheel mounting plate, and one end of the spring is sleeved on a spring limiting column.

[0014] To further explain, the elastic force of the spring acts on the spring limit column and the driven wheel mounting plate, and the driven wheel mounting plate is deflected toward the outside of the motor housing by the force of the spring. The driven wheel mounting plate is hinged with one end of the moving driven wheel and deflected toward the outside.

[0015] To further explain, the elastic force of the spring acts on the spring limit column and the sprocket mounting plate, and the sprocket mounting plate is deflected toward the outside of the motor housing by the force of the spring, and the end of the sprocket mounting plate hinged to the traveling wheel deflects toward the outside.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a self-driven motor, which can obtain the power for moving forward or backward in the pipeline through its own motor.

[0017] The present invention is provided with two sets of active feeding components that can be used alternately, one of which is used in places with large pipe diameters, and will be subjected to more friction in places with small pipe diameters. In order to avoid slipping, the two sets of active feeding components in places with small pipe diameters will jointly output power to pull the whole forward.

[0018] The active feeding assembly of the present invention adopts an elastic lifting design. When passing through a raised area on the inner wall of the pipe, it will appropriately shrink inward and then continue to lift upward, which is beneficial for the cleaning machine to maintain multi-point support with the inner pipe wall when moving, prevent the direction of movement and retreat from changing, and improve the cleaning machine's grip on the pipe wall, so that the brush can clean more thoroughly and comprehensively.

[0019] The two ends of the machine body of the present invention are respectively provided with an active feeding component and a jacking driven component, which can ensure the axial center position of the machine body on the pipeline, and is conducive to the machine body maintaining a vertical feeding direction in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention, ignoring the structural diagram of the protective cover; Figure 3 It is a structural schematic diagram of the jacking and traveling assembly; Figure 4 It is a structural schematic diagram of a constant diameter travel component; Figure 5 It is a structural schematic diagram of a single-belt step sprocket.

[0021] Notes on the attached drawings: 1. Brush mounting shaft; 2. Motor; 3. Coupling; 4. Spur gear; 5. Bevel gear; 6. Spring mounting seat; 7. Spring limit column; 8. Sprocket mounting plate; 9. Traveling wheel; 10. Protective cover; 11. Bevel gear mounting plate; 12. Chain; 13. Single-belt step sprocket; 14. Spring; 15. Sprocket mounting short plate; 16. Positioning shaft; 17. Driven wheel mounting plate; 18. Small bevel gear; 19. Positioning mounting plate; 20. Cleaning brush; 21. Traveling driven wheel. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings: like Figure 1-5As shown, in this embodiment, a pipeline cleaning machine is provided, including a motor 2, a cleaning brush 20 is coaxially fixedly arranged at the end of the rotating shaft of the motor 2, and the rotating shaft of the motor 2 is connected to two sets of active feeding components that work alternately through transmission, and the active feeding components include a jacking and traveling component and a constant diameter traveling component; the alternating work here specifically means that when the cleaning machine is working in a large pipeline, the jacking and traveling component mainly extends the traveling wheel 9 to the outer peripheral side to abut against the inner wall of the pipeline. At this time, the equipment mainly relies on the jacking and traveling component to provide a forward power, and the constant diameter traveling component is also running at the same time. In the large pipeline, the traveling wheel 9 of the constant diameter traveling component is idling, and the traveling wheel 9 of the constant diameter traveling component is rotating all the time, always preparing to enter a place with a small diameter. The reason why we say alternation is that in addition to working in large pipelines, we will also pass through some small-diameter pipelines. Therefore, the underground pipelines are connected by large pipelines and small pipelines. Therefore, when passing into the small pipeline, the diameter of the pipeline gradually shrinks, and the traveling wheel 9 of the jacking and traveling assembly will be pressed by the pipe wall to tighten the distance between the traveling wheel 9 (jacking and traveling assembly). At this time, the traveling wheel 9 on the constant diameter traveling assembly will abut against the pipe wall, that is to say, in places with small pipe diameters, the traveling wheels 9 set on the constant diameter traveling assembly and the jacking and traveling assembly are working at the same time. Because the spring 14 on the jacking and traveling assembly will be squeezed in places with small pipe diameters, that is to say, the pressure exerted by the traveling wheel 9 of the jacking and traveling assembly on the pipe wall will increase, so that the dynamic friction force of this cleaning machine will increase when passing through a small pipe diameter. At this time, the traveling wheel 9 of the constant diameter traveling assembly abutting against the inner wall of the pipe will provide power for the machine and pull the machine to feed.

[0026] In order to enable the machine to continuously move forward or backward in the pipeline without changing its direction and without rubbing against the inner wall of the pipeline, a lifting driven assembly needs to be installed at the other end of the motor 2 housing away from the rotating shaft, and a coupling 3 is installed at the rotating shaft of the motor 2. A brush mounting shaft 1 is provided in a rotating connection in the middle of the coupling 3.

[0027] In this embodiment, the brush installation shaft 1 is fixedly provided with a transmission member, and the brush installation shaft 1 is transmission-connected with the jacking and traveling assembly and the constant diameter traveling assembly through the transmission member. Preferably, the transmission member includes a spur gear 4 (active) and a bevel gear 5 (active) fixed on the brush installation shaft 1, and the bevel gear 5 is specifically arranged on the spur gear 4. The bevel gear 5 of the brush installation shaft 1 is mainly responsible for meshing with the small bevel gear 18 provided with the jacking and traveling assembly, so the brush installation shaft 1 can control the rotation of the traveling wheel 9 of the jacking and traveling assembly (the specific transmission is mentioned below).

[0028] Specifically, in order to enable the traveling wheels 9 and the traveling driven wheels 21 of the jacking driven assembly and the jacking traveling assembly to always abut against the inner wall of the pipe, at least two spring mounting seats 6 are fixedly provided on the outer side wall of the motor 2 housing, and the two spring mounting seats 6 are respectively provided at the two ends of the motor 2 housing, one of which is fixed to the motor 2 housing near the rotating shaft, and the other spring mounting seat 6 is fixed to the tail end of the motor 2 housing (away from one end of the rotating shaft). The spring mounting seat 6 includes a convex edge extending toward the outer peripheral side, and a plurality of spring limiting columns 7 arranged obliquely are fixedly provided in a ring array on the convex edge. The inclination direction of each spring limiting column 7 in the same spring mounting seat 6 is preferably consistent, and the inclination angle of each spring limiting column 7 is also preferably consistent; in this way, the amplitude, pressure, and relative position of each traveling wheel 9 to push outward are consistent. It is worth mentioning that the spring limiting column 7 is inclined along the direction of the tangent of the side wall of the motor 2 housing, and the inclination angle is determined according to needs.

[0029] The spring limiting column 7 near the spring mounting seat 6 at the rotating shaft is used to position the spring 14 on the jacking travel assembly. The spring limiting column 7 of the spring mounting seat 6 far away from the rotating shaft and located at one end of the bottom of the motor 2 housing is used to position the spring 14 on the jacking driven assembly.

[0030] In this embodiment, the coupling 3 is fixedly connected to the housing of the motor 2, the rotating shaft of the motor 2 extends into the coupling 3 and is fixedly connected to the brush installation shaft 1 coaxially, and the brush installation shaft 1 can rotate freely in the coupling 3; the other end of the brush installation shaft 1 is fixedly inserted with a cleaning brush 20, and the brush installation shaft 1 is connected to the rotating shaft of the motor 2 through the coupling 3, so the motor 2 can control the cleaning brush 20 to rotate to clean the inner wall of the pipeline. It is worth mentioning that the cleaning brush 20 uses steel hair.

[0031] To further explain, the jacking and traveling assembly includes a plurality of bevel gear mounting plates 11 arranged in a circular array on the top of the coupling 3, the bevel gear mounting plate 11 is rotatably plugged with a first rotating shaft, the first rotating shaft extends outwardly to both sides of the bevel gear mounting plate 11, a small bevel gear 18 is fixedly provided at one end of the first rotating shaft, a single-belt step sprocket 13 (a single side surface is provided with a cylindrical platform protruding outward), a sprocket mounting plate 8 is rotatably connected to one side of the single-belt step sprocket 13, a bearing is embedded and fixedly provided in the main sprocket mounting plate 8, the sprocket mounting plate 8 is interference fit with the outer ring of the bearing, and the inner ring of the bearing is interference fit with the boss of the single-belt step sprocket 13, so that the sprocket mounting plate 8 can correspond to the deflection of the single-belt step sprocket 13, and at the same time, the transmission rotation of the single-belt step sprocket 13 does not affect the position of the sprocket mounting plate 8.

[0032] Furthermore, a traveling wheel 9 for contacting the inner wall of the pipe is hinged on the other side of the sprocket mounting plate 8, and a single-belt step sprocket 13 is transmission-connected to the traveling wheel 9; the transmission-type rotation of the single-belt step sprocket 13 is to transmit power to the traveling wheel 9 on the sprocket mounting plate 8 through the chain 12, and the traveling wheel 9 is also fixedly provided with a rotating shaft, and the traveling wheel 9 is rotationally connected to the sprocket mounting plate 8 through the rotating shaft and the bearing, and the fixed rotating shaft of the traveling wheel 9 is also fixedly provided with a driven sprocket meshing with the chain 12. That is to say, when the sprocket mounting plate 8 is controlled by the spring 14 to deflect, it will not interfere with the normal rotation of the sprocket inside the sprocket mounting plate 8, even if the sprocket mounting plate 8 is rotationally connected to the bevel gear mounting plate 11 by the single-belt step sprocket 13.

[0033] The sprocket mounting plate 8 can be controlled to deflect outward because a spring 14 is fixedly provided on one side wall of the sprocket mounting plate 8, and one end of the spring 14 is sleeved on the spring limiting column 7. To further explain, the elastic force of the spring 14 acts on the spring limiting column 7 and the sprocket mounting plate 8, and the sprocket mounting plate 8 is deflected outward of the housing of the motor 2 by the force of the spring 14, and the end of the sprocket mounting plate 8 hinged with the traveling wheel 9 is deflected outward.

[0034] In this embodiment, the brush mounting shaft 1 is fixedly sleeved with a spur gear 4, and the constant diameter travel assembly includes a plurality of sprocket mounting short plates 15 and a plurality of transmission assemblies fixedly arranged on the top of the coupling 3 in an annular array. The brush mounting shaft 1 is equipped with a transmission member, and the brush mounting shaft 1 is transmission-connected to the sprocket mounting short plate 15 through the transmission member and the transmission assembly. A travel wheel 9 is hinged at one end of the sprocket mounting short plate 15, and the brush mounting shaft 1 is used to control the rotation of the travel wheel 9 of the sprocket mounting short plate 15. The structure of the sprocket mounting short plate 15 is consistent with the structure inside the sprocket mounting plate 8, and the second rotating shaft (mentioned below) transmits power to the travel wheel 9 hinged at one end of the sprocket mounting short plate 15 through the sprocket and chain 12.

[0035] To further explain, the brush mounting shaft 1 is fixedly provided with a spur gear 4, one end of the sprocket mounting short plate 15 is hinged with a second rotating shaft, the second rotating shaft is fixedly provided with a bevel gear, the transmission assembly includes a positioning shaft 16, the positioning shaft 16 is sleeved with a bevel gear and a spur gear, the bevel gear arranged on the positioning shaft 16 is meshed with the bevel gear of the second rotating shaft, and the spur gear on the positioning shaft 16 is meshed with the spur gear 4 on the brush mounting shaft 1; the bevel gear and spur gear arranged on the positioning shaft 16 are both drivenly connected to the positioning shaft 16 (that is, the bevel gear and the spur gear are restricted to rotate freely on the positioning shaft 16), so they can be driven to rotate when dynamic transmission occurs.

[0036] In this embodiment, the lifting driven assembly includes a plurality of positioning mounting plates 19 arranged in an annular array at one end of the bottom of the motor 2 housing, one end of the positioning mounting plate 19 is rotatably connected to a driven wheel mounting plate 17, the end of the driven wheel mounting plate 17 is rotatably connected to a traveling driven wheel 21, a spring 14 is fixedly provided on one side wall of the driven wheel mounting plate 17, and one end of the spring 14 is sleeved on the spring limiting column 7. The traveling driven wheel 21 is always in contact with the inner wall of the pipe, and is driven to rotate in the process of the whole machine moving forward.

[0037] To further explain, the elastic force of the spring 14 acts on the spring limit column 7 and the driven wheel mounting plate 17. The driven wheel mounting plate 17 is deflected toward the outside of the housing of the motor 2 by the force of the spring 14. The driven wheel mounting plate 17 is hinged with one end of the traveling driven wheel 21 and deflected toward the outside.

[0038] Further, in order to prevent waste and impurities from directly impacting the gear set inside the machine, a protective cover 10 is provided on the handle of the cleaning brush 20, and the protective cover 10 is located between the bristles of the cleaning brush 20 and the coupling 3. In this embodiment, the protective cover 10 is sleeved on the cleaning brush 20 by interference fitting a bearing, and when the cleaning brush 20 rotates, the protective cover 10 does not rotate.

[0039] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered as within the scope of this specification. For ordinary technicians in this field, they can make several modifications and improvements without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. Pipe cleaning machine, characterized by: It includes a motor, a cleaning brush is coaxially fixed at the end of the motor's rotating shaft, the motor's rotating shaft is connected to two sets of alternating active feed components through a transmission, a lifting driven component is installed at the other end of the motor housing away from the rotating shaft, a coupling is installed at the motor's rotating shaft, the active feed component includes a lifting travel component and a constant diameter travel component, and a brush mounting shaft is rotatably connected in the middle of the coupling.

2. The pipe cleaning machine according to claim 1, characterized in that: A transmission part is fixedly provided on the brush mounting shaft, and the brush mounting shaft is transmission-connected to the lifting and traveling assembly and the constant diameter traveling assembly through the transmission part. At least two spring mounting seats are fixedly provided on the outer wall of the motor housing, and the two spring mounting seats are respectively arranged at the two ends of the motor housing. The spring mounting seat includes a convex edge extending toward the outer peripheral side, and a plurality of inclined spring limiting columns are fixedly provided in a ring array on the convex edge.

3. The pipe cleaning machine according to claim 1, characterized in that: The coupling is fixedly connected to the housing of the motor, the rotating shaft of the motor extends into the coupling and is fixedly connected to the brush installation shaft coaxially, and a cleaning brush is fixedly inserted at the other end of the brush installation shaft.

4. The pipe cleaning machine according to claim 2, characterized in that: The jacking and traveling assembly includes a plurality of bevel gear mounting plates arranged in a circular array at the top of the coupling, the bevel gear mounting plate is rotatably plugged with a first rotating shaft, the first rotating shaft extends outwardly to both sides of the bevel gear mounting plate respectively, one end of the first rotating shaft is fixedly provided with a small bevel gear for meshing with a transmission member of the brush mounting shaft, the other end of the first rotating shaft is fixedly provided with a single-belt step sprocket, one side of the single-belt step sprocket is rotatably connected with a sprocket mounting plate, the other side of the sprocket mounting plate is hinged with a traveling wheel for abutting against the inner wall of the pipe, the single-belt step sprocket is drivingly connected to the traveling wheel; a spring is fixedly provided on one side wall of the sprocket mounting plate, one end of the spring is sleeved on a spring limiting column.

5. The pipe cleaning machine according to claim 1, characterized in that: The constant diameter travel assembly includes multiple sprocket mounting short plates and multiple transmission assemblies fixed in a circular array on the top of the coupling. The brush mounting shaft is equipped with a transmission part. The brush mounting shaft is connected to the sprocket mounting short plate through the transmission part and the transmission assembly. A traveling wheel is hinged at one end of the sprocket mounting short plate. The brush mounting shaft is used to control the rotation of the traveling wheel of the sprocket mounting short plate.

6. The pipe cleaning machine according to claim 5, characterized in that: The brush mounting shaft is fixedly provided with a spur gear, one end of the sprocket mounting short plate is hinged with a second rotating shaft, the second rotating shaft is fixedly provided with a bevel gear, the transmission assembly includes a positioning shaft, the positioning shaft is sleeved with a bevel gear and a spur gear, the bevel gear arranged on the positioning shaft is meshed with the bevel gear of the second rotating shaft, and the spur gear on the positioning shaft is meshed with the spur gear on the brush mounting shaft.

7. The pipe cleaning machine according to claim 1, characterized in that: The jacking driven assembly includes a plurality of positioning mounting plates arranged in a circular array at one end of the bottom of the motor housing, one end of the positioning mounting plate is rotatably connected to a driven wheel mounting plate, the end of the driven wheel mounting plate is rotatably connected to a traveling driven wheel, a spring is fixedly provided on one side wall of the driven wheel mounting plate, and one end of the spring is sleeved on a spring limiting column.

8. The pipe cleaning machine according to claim 7, characterized in that: The elastic force of the spring acts on the spring limiting column and the driven wheel mounting plate. The driven wheel mounting plate is deflected toward the outside of the motor housing by the action of the spring. The driven wheel mounting plate is hinged with one end of the traveling driven wheel and deflected toward the outside.

9. The pipe cleaning machine according to claim 4, characterized in that: The elastic force of the spring acts on the spring limit column and the sprocket mounting plate. The sprocket mounting plate is deflected toward the outside of the motor housing by the force of the spring, and one end of the sprocket mounting plate hinged with the traveling wheel deflects toward the outside.

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