Telescopic pipeline cleaning device

Abstract

According to the telescopic pipeline cleaning device, the conductive sliding ring control cleaning assembly is arranged in the device, the distance between the cleaning brush head and the columnar shell can be adjusted in real time, the telescopic pipeline cleaning device adapts to pipelines with different pipe diameters, the cleaning effect is guaranteed, meanwhile, unnecessary energy consumption and abrasion are avoided, and after cleaning work is completed, the cleaning efficiency is improved. The cleaning brush head can be retracted into the device, so that the whole structure is more compact; the design of a planetary gear train is adopted, so that the bearing capacity of the rotating shaft is improved, and the columnar shell is driven to rotate, so that the cleaning brush head has a larger cleaning range, the energy loss is reduced, and the stability of the whole structure is enhanced; the detachable design of the rotary cover is convenient to maintain and replace, the maintenance cost is reduced, and the practicability and economical efficiency of the device are further improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline cleaning technology, and in particular to a retractable pipeline cleaning device. Background Technology

[0002] Traditional manual pipeline cleaning methods are generally inefficient, costly, and pose significant safety hazards, making them unsuitable for the needs of modern urban pipeline maintenance. This has driven the development of pipeline cleaning equipment technology.

[0003] Compared to traditional manual pipe cleaning methods, existing pipe cleaning devices have advantages such as high cleaning efficiency and reduced safety hazards. However, the pipe cleaning devices currently in use also have many shortcomings, such as a narrow applicable pipe diameter range, making it difficult to meet the cleaning needs of larger pipe diameters, which to some extent limits their application scenarios and functionality; the operation of some pipe cleaning devices requires professional training, which places high demands on the technical skills of operators and increases the barrier to entry; at the same time, there is also the problem of high maintenance costs, which places a significant economic burden on small and medium-sized enterprises or users with limited budgets.

[0004] Therefore, existing pipeline cleaning equipment needs to be improved to not only adapt to pipelines of different diameters and complex pipeline environments and complete cleaning operations independently, but also improve the safety of cleaning operations, increase the cleaning efficiency of pipeline cleaning equipment, reduce usage and maintenance costs, and further enhance the practicality and economy of pipeline cleaning equipment. Utility Model Content

[0005] In view of the shortcomings of current pipeline cleaning devices, the purpose of this utility model is to provide a retractable pipeline cleaning device that can not only adapt to pipelines of different diameters and complex pipeline environments and independently complete cleaning operations, but also improve the safety of cleaning operations, increase the cleaning efficiency of the pipeline cleaning device, reduce the use and maintenance costs, and further enhance the practicality and economy of the pipeline cleaning device.

[0006] To achieve the purpose of this utility model, this utility model provides a retractable pipe cleaning device, including a central shaft assembly, a cylindrical outer shell, and several cleaning components distributed along the circumferential direction on the cylindrical outer shell.

[0007] The cylindrical outer shell is rotatably fitted onto the central shaft assembly; the cleaning assembly includes a cleaning brush head and an X-shaped swing arm mechanism, the X-shaped swing arm mechanism including swing arm I and swing arm II, which form an X-shaped hinge; one end of swing arm I is axially slidably fitted with the cleaning brush head, and the other end is hinged and axially fixed to the cylindrical outer shell; one end of swing arm II is hinged and axially fixed to the cleaning brush head, and the other end can be driven to slide axially, so that the distance between the cleaning brush head and the cylindrical outer shell is adjustable.

[0008] Furthermore, the central shaft assembly includes a central shaft and an enlarged column base structure, wherein a generator is provided inside the enlarged column base structure, and the generator is fixedly connected to the bottom groove of the enlarged column base structure;

[0009] A transmission mechanism is provided between the cylindrical outer shell and the central shaft assembly. The transmission mechanism includes a conductive slip ring and a planetary gear train. The conductive slip ring can be driven to slide axially along the central shaft, causing the rocker arm I and rocker arm II to slide axially along the cylindrical outer shell. The planetary gear train can be driven to rotate the cylindrical outer shell.

[0010] Furthermore, the conductive slip ring is rotatably fitted onto the central shaft and located inside the cylindrical housing. The conductive slip ring includes an anti-rotation plate, a rotor wire, and a stator wire. The anti-rotation plate is connected to the cylindrical housing, the stator wire is connected to the generator, and the rotor wire is connected to several double-rail slides located on the cylindrical housing.

[0011] Furthermore, the dual-rail slide is distributed along the circumference of the cylindrical shell and fixed axially to the cylindrical shell. The dual-rail slide includes a slide body, on which a stepper motor, a slider, and a ball screw are provided. The slider is connected to the rocker arm II. The stepper motor is connected to the rotor wire and drives the slider to move on the ball screw, thereby driving the rocker arm I and the rocker arm II to slide.

[0012] Furthermore, when the slider is in operation, it moves along the ball screw in a direction close to the stepper motor, causing the rocker arm I and rocker arm II to slide outward from the cylindrical shell, thereby increasing the distance between the cleaning brush head and the cylindrical shell;

[0013] When the slider is not in operation, it moves along the ball screw in a direction away from the stepper motor, causing the swing arm I and swing arm II to slide into the cylindrical housing, thereby reducing the distance between the cleaning brush head and the cylindrical housing.

[0014] Furthermore, the transmission mechanism also includes a rotating shaft, the driving end of which is connected to a generator, and the driven end of which is connected to a planetary gear train, which is connected to a cylindrical housing.

[0015] The protruding part of the enlarged column base structure is provided with a planet carrier, which is used to support the planetary gear train.

[0016] Furthermore, the planetary gear train includes a sun gear, planetary gears, and a ring gear. The sun gear is connected to the driven end of the rotating shaft and drives the planetary gears to rotate. The planetary gears drive the ring gears to rotate, which in turn drives the cylindrical outer shell to rotate.

[0017] Furthermore, the cleaning brush head includes a brush and a slide groove. The brush is fixedly installed at the bottom of the slide groove and connected to the swing arm II via a base fixed to the slide groove. The slide groove is provided with a slide groove slider, which is connected to the swing arm I.

[0018] Furthermore, the top of the cylindrical outer shell is provided with a detachable rotating cover, and a bearing connection device for fixing the detachable rotating cover and the top of the central shaft is provided between the detachable rotating cover and the central shaft.

[0019] Furthermore, the bearing cover in the bearing connection device is provided with a fixed connection component that matches the traveling mechanism.

[0020] The beneficial effects of this utility model are as follows: This utility model provides a retractable pipe cleaning device with a conductive slip ring controlling the cleaning assembly. This allows for real-time adjustment of the distance between the cleaning brush head and the cylindrical outer shell, adapting to pipes of different diameters. This ensures effective cleaning while minimizing unnecessary energy consumption and wear. After cleaning, the cleaning brush head retracts into the device, resulting in a more compact overall structure. Furthermore, the planetary gear system design enhances the load-bearing capacity of the rotating shaft and drives the cylindrical outer shell to rotate, providing a wider cleaning range for the brush head, reducing energy loss, and improving the overall structural stability. The detachable rotating cover facilitates maintenance and replacement, reducing maintenance costs and further enhancing the practicality and economy of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a longitudinal cross-sectional view of the present invention along its length.

[0023] Figure 3 This is a schematic diagram of the structure of a conductive slip ring;

[0024] Figure 4 This is a schematic diagram of a planetary gear train.

[0025] Figure 5 This is a schematic diagram of the structure of a double-rail slide table.

[0026] Reference numerals: 1. Central shaft assembly; 101. Central shaft; 102. Enlarged column base structure; 2. Columnar outer shell; 3. Cleaning assembly; 4. Cleaning brush head; 401. Brush; 402. Slide groove; 403. Base of slide groove; 404. Slide groove slider; 5. X-shaped rocker arm mechanism; 501. Rocker arm I; 502. Rocker arm II; 6. Generator; 7. Conductive slip ring; 701. Anti-rotation plate; 702. Rotor wire; 703. Stator 8. Sub-lead wire; 801. Sun gear; 802. Planetary gear; 803. Gear ring; 9. Double-rail slide; 901. Slide body; 902. Stepper motor; 903. Slider; 904. Ball screw; 10. Rotary shaft; 11. Planetary carrier; 12. Removable rotating cover; 13. Bearing connection device; 1301. Bearing; 1302. Gasket; 1303. Bearing cover; 14. Fixed connection assembly. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0028] This utility model discloses a retractable pipe cleaning device, including a central shaft assembly 1, a cylindrical outer shell 2, and a plurality of cleaning components 3 distributed along the circumferential direction on the cylindrical outer shell 2.

[0029] The cylindrical outer shell 2 is rotatably fitted onto the central shaft assembly 1. The cleaning assembly 3 includes a cleaning brush head 4 and an X-shaped swing arm mechanism 5. The X-shaped swing arm mechanism 5 includes a swing arm I 501 and a swing arm II 502, which form an X-shaped hinge. One end of the swing arm I 501 is axially slidably fitted with the cleaning brush head 4, and the other end is hinged and axially fixed to the cylindrical outer shell 2. One end of the swing arm II 502 is hinged and axially fixed to the cleaning brush head 4, and the other end can be driven to slide axially, making the distance between the cleaning brush head 4 and the cylindrical outer shell 2 adjustable. The central shaft assembly 1 is a fixed structure, and the cylindrical outer shell 2 is rotatably fitted onto the central shaft assembly 1 through a bearing. This ensures that the cylindrical outer shell 2 rotates flexibly relative to the central shaft assembly 1, and the rotation process is smooth. Additionally, the existing technology of setting limiting bosses at both ends of the central shaft assembly 1 can be used to prevent the cylindrical outer shell 2 from axially shifting. The bearings are selected with a sealing structure to avoid… Dust and impurities entering the system affect rotational performance, which will not be elaborated further here. The X-shaped rocker arm mechanism 5 consists of rocker arm I 501 and rocker arm II 502. The two intersect at a point where they form an X-shaped hinge via a pin. One end of rocker arm I 501 can be axially slidably fitted to the cleaning brush head 4 using a dovetail groove, which ensures that the cleaning brush head 4 slides stably along the axial direction. The other end can be hinged to a pre-set mounting base on the cylindrical housing 2 using a U-shaped connector. The mounting base is connected to the cylindrical housing 2 by welding or bolting. The cleaning brush head 4 is fixed on the outer shell 2 in an axial position. One end of the swing rod II 502 can be hinged to the side of the cleaning brush head 4 using a T-shaped connector. The T-shaped connector is fixedly connected to the cleaning brush head 4 and fixed in an axial position. The other end can be provided with a groove and a slider at the connection with the cylindrical outer shell 2. The slider is embedded in the groove opened along the axial direction on the outer surface of the cylindrical outer shell 2. When the slider slides in the groove, the swing rod II 502 drives the cleaning brush head 4 to change the distance between it and the cylindrical outer shell 2, so as to achieve cleaning of pipes with different diameters.

[0030] In this embodiment, the central shaft assembly 1 includes a central shaft 101 and an enlarged column base structure 102. A generator 6 is housed within the enlarged column base structure 102, and the generator 6 is fixedly connected to the bottom groove of the enlarged column base structure 102. The central shaft 101, as the core supporting component of the entire device, is made of high-strength alloy steel to ensure that it can withstand certain external forces and torques during pipeline cleaning operations. The central shaft 101 can be hollow, which not only reduces its own weight but also provides space for the installation of internal wiring and transmission components; further details are omitted here. The bottom of the enlarged column base structure 102 is disc-shaped, with a diameter larger than that of the central shaft 101. The diameter of 01, the bottom of the enlarged column base structure 102 is provided with a groove for installing the generator 6. The generator 6 serves as the power source of the entire cleaning device. Its top can be fixedly connected to the bottom groove of the enlarged column base structure 102 by bolt group. Before installation, the mounting surface of the top of the generator 6 and the corresponding mounting position of the bottom groove of the enlarged column base structure 102 are flattened to ensure that the two fit tightly. When tightening the bolts, the principle of diagonal tightening should be followed to ensure uniform force and prevent the generator 6 from loosening or shifting during operation, thereby ensuring the stability of the generator 6 operation and the reliability of power output. This will not be elaborated further here.

[0031] A transmission mechanism is provided between the cylindrical outer shell 2 and the central shaft assembly 1. The transmission mechanism includes a conductive slip ring 7 and a planetary gear train 8. The conductive slip ring 7 can be driven to slide axially along the central shaft 101, causing the rocker arm I 501 and rocker arm II 502 to slide axially along the cylindrical outer shell 2. The planetary gear train 8 can be driven to rotate the cylindrical outer shell 2. The conductive slip ring 7 is mounted on the central shaft 101 and can slide axially along the central shaft 101 by power supplied by the generator 6. The conductive slip ring 7 has multiple layers of conductive rings and brushes inside, which not only realizes the axial sliding function, but also transmits the electrical energy generated by the generator 6 to the cleaning assembly 3 on the cylindrical outer shell 2. When the conductive slip ring 7 slides... At the same time, the brush head is connected to the swing rod I 501 and swing rod II 502 via a double-rail slide or connecting rod, which drives the swing rod I 501 and swing rod II 502 to slide along the axial direction of the cylindrical shell 2, thereby adjusting the distance between the cleaning brush head and the cylindrical shell 2. The planetary gear system 8 mainly includes a sun gear, planet gears, an internal gear ring and a planet carrier. The sun gear is usually mounted on the output shaft of the power source. The internal gear ring is fixedly connected to the inner wall of the cylindrical shell 2. As the power source drives the sun gear to rotate, the planet gears rotate around their own axes and revolve around the internal gear ring under the drive of the sun gear, thereby driving the internal gear ring and the cylindrical shell 2 to rotate together. The planetary gear system 8 has the characteristics of high transmission efficiency and strong load-bearing capacity, and can stably drive the cylindrical shell 2 to rotate.

[0032] In this embodiment, the conductive slip ring 7 is rotatably fitted onto the central shaft 101 and located inside the cylindrical outer shell 2. The conductive slip ring 7 includes an anti-rotation plate 701, a rotor wire 702, and a stator wire 703. The anti-rotation plate 701 is connected to the cylindrical outer shell 2, the stator wire 703 is connected to the generator 6, and the rotor wire 702 is connected to several double-rail slides 9 disposed on the cylindrical outer shell 2. The conductive slip ring 7 is rotatably fitted onto the central shaft 101 and located inside the cylindrical outer shell 2. The outer shell of the conductive slip ring 7 is made of wear-resistant and insulating engineering plastic material to protect the internal conductive structure, which will not be described in detail here. The anti-rotation plate 701 is connected to the cylindrical outer shell 2 by welding or bolting to ensure that the anti-rotation plate 701 can restrict the rotor part of the conductive slip ring 7 from rotating with the cylindrical outer shell 2 during operation, so that the rotor part and the stator part of the conductive slip ring 7 can... The stator conductor 703 is connected to the stator part of the conductive slip ring 7 by welding, crimping, or plug-in connection. The other end of the stator conductor 703 is connected to the corresponding terminal of the generator 6. After the connection is completed, the connection part is insulated, such as by wrapping with insulating tape, to prevent leakage. One end of the rotor conductor 702 is connected to the rotor part of the conductive slip ring 7, and the other end is connected to the power input terminal of the double-rail slide table 9 to ensure that the electrical energy can be stably transmitted from the generator 6 to the double-rail slide table 9 through the conductive slip ring 7, thereby driving the swing rod I 501 and swing rod II 502 to slide along the axial direction of the cylindrical shell 2, realizing the adjustment of the distance between the cleaning brush head and the cylindrical shell 2. At the same time, in order to prevent the rotor conductor 702 from shaking or being pulled during operation, the conductor can be fixed by cable ties or wire grooves, which will not be described in detail here.

[0033] In this embodiment, the double-rail slide 9 is distributed along the circumference of the cylindrical outer shell 2 and is axially fixed to the cylindrical outer shell 2. The double-rail slide 9 includes a slide body 901, on which a stepper motor 902, a slider 903, and a ball screw 904 are provided. The slider 903 is connected to the rocker arm II 502. The stepper motor 902 is connected to the rotor wire 702 and drives the slider 903 to move on the ball screw 904, thereby causing the rocker arm I 501 and the rocker arm II 502 to slide. The axial direction of the cylindrical outer shell 2 is generally... Having a certain length, the coverage area of ​​a single cleaning brush head 4 is limited. Several double-rail slides 9 distributed along the axial direction of the cylindrical outer shell 2 can accommodate multiple cleaning brush heads 4, enabling cleaning operations at different axial positions. This expands the overall cleaning range, reduces ineffective movement time during the cleaning process, and improves cleaning efficiency. Based on the working requirements and design layout of the cleaning assembly 3, the installation positions of the swing rod I 501 and swing rod II 502 on the double-rail slides 9 are determined, and will not be elaborated further here. The ball screw 904 is set on the slide body 90. The slider 903 is then fitted onto the ball screw 904 in the screw mounting slot of slide body 901. The nut inside the slider 903 is ensured to properly engage with the screw. The stepper motor 902 is then mounted on the motor mounting bracket of slide body 901 and secured with screws. The output shaft of the stepper motor 902 is connected to the ball screw 904 via a coupling, ensuring a secure connection and good concentricity to prevent vibration and noise during operation. Further details are omitted here. The rotor wire 702 is connected to the terminal of the stepper motor 902. Pay attention to the polarity to prevent reverse connection, which could cause the stepper motor 902 to malfunction. Also, insulate the connection points, such as by wrapping them with insulating tape, to prevent leakage. The swing arm II 502 is mounted on the slider 903 and can be connected by bolts or welding to ensure a firm connection. Adjusting the position and angle of the swing arm II 502 allows the swing arm I and swing arm II to slide outward / inward of the cylindrical shell as the slider 903 moves, making the distance between the cleaning brush head 4 and the cylindrical shell 2 adjustable to meet the working requirements of the cleaning assembly 3.

[0034] In this embodiment, when the slider 903 is in the working state, it moves along the ball screw 904 in a direction close to the stepper motor 902, causing the rocker arm I 501 and rocker arm II 502 to slide outward from the cylindrical housing 2, thereby increasing the distance between the cleaning brush head 4 and the cylindrical housing 2; when the slider 903 is not in the working state, it moves along the ball screw 904 in a direction away from the stepper motor 902, causing the rocker arm I 501 and rocker arm II 502 to slide inward from the cylindrical housing 2, thereby decreasing the distance between the cleaning brush head 4 and the cylindrical housing 2; for the stepper motor 902... The controller of motor 902 sets parameters to determine the pulse frequency, pulse quantity, and direction signals for forward rotation (corresponding to slider 903 moving closer to stepper motor 902) and reverse rotation (corresponding to slider 903 moving away from stepper motor 902). When stepper motor 902 receives the forward rotation control signal, it starts to rotate, driving ball screw 904 to rotate via coupling. The rotation of ball screw 904 is converted into linear motion of slider 903 along ball screw 904. 3. Moving along the direction closer to stepper motor 902, since the swing arm II 502 is mounted on slider 903, the movement of slider 903 causes swing arms I 501 and II 502 to slide outward from cylindrical housing 2, so that cleaning brush head 4 reaches the working position and begins cleaning operation; when stepper motor 902 receives a reverse control signal, it begins to rotate in the reverse direction, driving ball screw 904 to rotate in the reverse direction. The reverse rotation of ball screw 904 causes slider 903 to move in the direction away from stepper motor 902. The reverse movement of slider 903 The swing arms I 501 and II 502 slide into the cylindrical housing 2, causing the cleaning brush head 4 to return to its initial position and stop working. Limit switches can also be installed at both ends of the slide body 901. When the slider 903 moves to the limit position, the limit switch is triggered, stopping the rotation of the stepper motor 902 and preventing the slider 903 from exceeding its stroke range and damaging the equipment. Alternatively, a buffer device, such as a rubber buffer pad or a hydraulic buffer, can be set on the movement path of the slider 903 to reduce the impact force when the slider 903 reaches the limit position and reduce the vibration and noise of the equipment.

[0035] In this embodiment, the transmission mechanism further includes a rotating shaft 10. The driving end of the rotating shaft 10 is connected to the generator 6, and the driven end of the rotating shaft 10 is connected to the planetary gear train 8. The planetary gear train 8 is connected to the cylindrical housing 2. The driving end of the rotating shaft 10 is connected to the bottom of the generator 6 using a flexible coupling. The flexible coupling can not only compensate for the slight coaxiality deviation between the output shaft of the generator 6 and the rotating shaft 10, but also play a buffering role at the moment of starting and stopping the generator 6, reducing the impact damage to the generator 6 and the rotating shaft 10. During installation, the two halves of the flexible coupling are first installed on the output shaft of the generator 6 and the rotating shaft 10 respectively, then locating pins are used to ensure accurate alignment, and finally bolts are tightened to ensure tight connection and high transmission efficiency. The driven end of the rotating shaft 10 and the planetary gear train 8 are generally connected by a spline connection. An external spline is machined on the driven end of the rotating shaft 10, and an internal spline is machined on the inner hole of the input component of the planetary gear train 8, such as the sun gear. During assembly, the external spline of the rotating shaft 10 is inserted into the internal spline of the input component of the planetary gear train 8. To prevent axial movement, a snap ring or shaft shoulder can be used for axial positioning. This design can achieve effective torque transmission and has high centering accuracy and good alignment. The planetary gear train 8 and the cylindrical housing 2 can usually be connected by bolts. Bolt holes are machined on the housing or bracket of the planetary gear train 8, and corresponding bolt holes are also machined on the cylindrical housing 2. Bolts are passed through the bolt holes and tightened with nuts. To ensure the sealing and stability of the connection, a sealing gasket can be added at the mating surface. During installation, the planetary gear train 8 is first placed in the appropriate position inside the cylindrical housing 2, then the bolt holes are aligned, and the bolts and nuts are installed in sequence and tightened according to the specified torque. Further details are omitted here.

[0036] The protruding portion of the enlarged column base structure 102 is provided with a planet carrier 11, which supports the planetary gear train 8. The planet carrier 11 is generally made of high-strength alloy steel, possessing high strength and toughness, capable of withstanding large torque and impact forces. The planet carrier 11 and the enlarged column base structure 102 can be fixedly connected by welding. The connection area is cleaned to remove oil, rust, and other impurities. Then, a suitable welding process, such as CO2 gas shielded welding or manual arc welding, is selected to firmly weld the planet carrier 11 to the protruding portion of the enlarged column base structure 102. During welding, it is important to control the welding parameters to avoid welding defects such as porosity and cracks, which will not be elaborated further here. The planetary gear train 8 is generally supported by sliding bearings or rolling bearings on the planet carrier 11. Sliding bearing support refers to… The method involves machining holes for mounting sliding bearings on the planetary carrier 11, installing the sliding bearings inside the holes, and mounting the planetary gear shafts inside the sliding bearings. The planetary gears rotate through the sliding bearings. Sliding bearings have the advantages of simple structure and low cost, but their friction coefficient is relatively high, making them suitable for planetary gear systems with low speeds and light loads. The rolling bearing support typically uses suitable types of rolling bearings, such as deep groove ball bearings or cylindrical roller bearings. The rolling bearings are installed in the corresponding positions on the planetary carrier 11, and the planetary gear shafts are mounted inside the rolling bearings. Rolling bearings have a low friction coefficient, high rotational efficiency, and can withstand higher speeds and loads, making them suitable for supporting most planetary gear systems. In actual implementation, the above support methods are comprehensively considered based on specific application scenarios, load requirements, and speeds to ensure that the planetary carrier 11 can stably support the planetary gear system 8 and achieve reliable transmission.

[0037] In this embodiment, the planetary gear train 8 includes a sun gear 801, planetary gears 802, and a ring gear 803. The sun gear 801 is connected to the driven end of the rotating shaft 10 and drives the planetary gears 802 to rotate. The planetary gears 802 drive the ring gears 803 to rotate, which in turn drives the cylindrical housing 2 to rotate. When the rotating shaft 10 transmits the electrical energy provided by the generator 6 and drives the sun gear 801 to rotate, the rotation of the sun gear 801 drives the planetary gears 802, which mesh with it, to rotate. Since the other side of the planetary gears 802 meshes with the fixed ring gears 803, the planetary gears 802 revolve around the sun gear 801 while rotating, thereby driving the cylindrical housing 2 to rotate. Through reasonable design of the sun gear 801, The gear ratio between planetary gear 802 and ring gear 803 changes the rotational speed and torque of the cleaning brush head 4 to meet the cleaning needs of pipes with different diameters and levels of dirt, which will not be elaborated here. The ring gear 803 is connected to the cylindrical housing 2 by bolts. Corresponding bolt holes are pre-machined on the ring gear 803 and the cylindrical housing 2. The position and size of the bolt holes are set according to actual needs. At the same time, in order to improve the reliability of the connection between the ring gear 803 and the cylindrical housing 2, positioning pin holes can also be set around the bolt holes for installing positioning pins to ensure the accurate relative position of the ring gear 803 and the cylindrical housing 2. The mounting surfaces of the ring gear 803 and the cylindrical housing 2 are cleaned and an appropriate amount of sealant is applied to prevent dust and moisture from entering the interior of the planetary gear train 8, which will not be elaborated here.

[0038] In this embodiment, the cleaning brush head 4 includes a brush 401 and a slide 402. The brush 401 is fixedly installed at the bottom of the slide 402 and connected to the swing arm II 502 via a base 403 fixed to the slide 402. A slide slider 404 is provided on the slide 402 and is connected to the swing arm I 501. The brush 401 is generally made of a high-strength, corrosion-resistant material, which will not be described in detail here. The shape and size of the base 403 of the slide 402 should be adapted to the swing arm II 502 and the slide 402. Drilling and connecting holes can be used in the prior art. Secure the rocker arm II 502 to the slide rail 402 using screws or bolts to ensure a firm and secure installation. Machine corresponding bolt holes on the slide rail slider 404 and the rocker arm I 501. Select appropriate bolts, determining their diameter and length based on the required strength and stress on the rocker arm I 501. During installation, pass the bolts through the bolt holes on the slide rail slider 404 and the rocker arm I 501, then tighten the nuts. To prevent loosening, spring washers or lock nuts can be used. This connection method is simple to operate and facilitates disassembly and maintenance.

[0039] In this embodiment, the top of the cylindrical outer shell 2 is provided with a detachable rotating cover 12. A bearing connection device 13 is provided between the detachable rotating cover 12 and the top of the central shaft 101 to fix the detachable rotating cover 12 and the central shaft 101. The detachable rotating cover 12 is disassembled and installed on the top of the cylindrical outer shell 2 via bolts or snap-fit ​​connections, allowing for maintenance, repair, or replacement of internal components or the central shaft assembly 1, reducing maintenance difficulty and workload, and improving maintenance efficiency. Simultaneously, during operation, the detachable rotating cover 12 can be tightly connected to the cylindrical outer shell 2, ensuring the overall sealing and compactness of the device. The bearing connection device 13 is used to connect the detachable rotating cover 12 to the central shaft 101, ensuring the relative position stability of the central shaft 101. Since other rotating components are also provided on the central shaft assembly 1, the bearing in the bearing connection device 13 can reduce frictional resistance during rotation, ensuring smooth rotation of the rotating components and improving the operating efficiency and service life of the device. The bearing connection device 13 includes a bearing 1. 301, shim 1302, and bearing cover 1303. The inner ring of the bearing 1301 is mounted on the journal at the top of the central shaft 101 and fixed to the central shaft 101 by means of a key or interference fit. The outer ring of the bearing 1301 is mounted in the bearing hole of the removable rotating cover 12. A shim 1302 is provided between the bearing 1301 and the bearing hole of the removable rotating cover 12. The shim 1302 can adjust the gap between the bearing 1301 and the removable rotating cover 12 and can evenly distribute the pressure borne by the bearing 1301. The pressure is distributed to the connected components to avoid deformation and damage caused by excessive local pressure on the bearing 1301, thus extending its service life. It can also absorb vibration and impact generated during operation, helping to reduce the additional stress on the bearing 1301, reduce noise, and improve its stability and comfort. The bearing cover 1303 fixes the bearing 1301 axially in a specific position by bolts or other connection methods to prevent the bearing 1301 from moving axially on the shaft, ensuring that the bearing 1301 can work normally. This will not be described in detail here.

[0040] In this embodiment, the bearing cover 1303 of the bearing connecting device 13 is provided with a fixed connecting component 14 that matches the walking mechanism. The fixed connecting component 14 is generally connected by bolts, pins, or snap-fit ​​connections. The snap-fit ​​connection is quick to install and is suitable for occasions that require rapid assembly and disassembly. The design of the snap-fit ​​must ensure sufficient clamping force to prevent the bearing connecting device 13 from loosening during the walking process. The size and material strength of the snap-fit ​​are determined by calculating the impact force generated by the walking mechanism during movement. At the same time, the interface between the fixed connecting component 14 and the walking mechanism should match each other to ensure tightness of connection. Further details are omitted here.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A retractable pipe cleaning device, characterized in that: It includes a central shaft assembly, a cylindrical housing, and several cleaning components distributed circumferentially within the cylindrical housing; The cylindrical outer shell is rotatably fitted onto the central shaft assembly; the cleaning assembly includes a cleaning brush head and an X-shaped swing arm mechanism, the X-shaped swing arm mechanism including swing arm I and swing arm II, which form an X-shaped hinge; one end of swing arm I is axially slidably fitted with the cleaning brush head, and the other end is hinged and axially fixed to the cylindrical outer shell; one end of swing arm II is hinged and axially fixed to the cleaning brush head, and the other end can be driven to slide axially, so that the distance between the cleaning brush head and the cylindrical outer shell is adjustable.

2. The retractable pipe cleaning device according to claim 1, characterized in that: The central shaft assembly includes a central shaft and an enlarged column base structure. A generator is installed inside the enlarged column base structure, and the generator is fixedly connected to the bottom groove of the enlarged column base structure. A transmission mechanism is provided between the cylindrical outer shell and the central shaft assembly. The transmission mechanism includes a conductive slip ring and a planetary gear train. The conductive slip ring can be driven to slide axially along the central shaft, causing the rocker arm I and rocker arm II to slide axially along the cylindrical outer shell. The planetary gear train can be driven to rotate the cylindrical outer shell.

3. The retractable pipe cleaning device according to claim 2, characterized in that: The conductive slip ring is rotatably fitted onto the central shaft and located inside the cylindrical housing. The conductive slip ring includes an anti-rotation plate, a rotor wire, and a stator wire. The anti-rotation plate is connected to the cylindrical housing, the stator wire is connected to the generator, and the rotor wire is connected to several double-rail slides located on the cylindrical housing.

4. The retractable pipe cleaning device according to claim 3, characterized in that: The dual-rail slide is distributed along the circumference of the cylindrical shell and fixed to the cylindrical shell in the axial direction. The dual-rail slide includes a slide body, on which a stepper motor, a slider and a ball screw are provided. The slider is connected to the rocker arm II. The stepper motor is connected to the rotor wire and drives the slider to move on the ball screw, thereby driving the rocker arm I and the rocker arm II to slide.

5. The retractable pipe cleaning device according to claim 4, characterized in that: When the slider is in working condition, it moves along the direction close to the stepper motor on the ball screw, causing the swing arm I and swing arm II to slide out of the cylindrical shell, thereby increasing the distance between the cleaning brush head and the cylindrical shell. When the slider is not in operation, it moves along the ball screw in a direction away from the stepper motor, causing the rocker arm I and rocker arm II to slide into the cylindrical housing, thereby reducing the distance between the cleaning brush head and the cylindrical housing.

6. The retractable pipe cleaning device according to claim 2, characterized in that: The transmission mechanism also includes a rotating shaft, the driving end of which is connected to a generator, and the driven end of which is connected to a planetary gear train, which is connected to a cylindrical housing. The protruding part of the enlarged column base structure is provided with a planet carrier, which is used to support the planetary gear train.

7. The retractable pipe cleaning device according to claim 2, characterized in that: The planetary gear train includes a sun gear, planetary gears, and a ring gear. The sun gear is connected to the driven end of the rotating shaft and drives the planetary gears to rotate. The planetary gears drive the ring gears to rotate, which in turn drives the cylindrical outer shell to rotate.

8. The retractable pipe cleaning device according to claim 1, characterized in that: The cleaning brush head includes a brush and a slide groove. The brush is fixedly installed at the bottom of the slide groove and connected to the swing rod II via a base fixed to the slide groove. The slide groove is provided with a slide groove slider, which is connected to the swing rod I.

9. The retractable pipe cleaning device according to claim 1, characterized in that: The top of the cylindrical outer shell is provided with a detachable rotating cover, and a bearing connection device for fixing the detachable rotating cover and the top of the central shaft is provided between the detachable rotating cover and the central shaft.

10. The retractable pipe cleaning device according to claim 9, characterized in that: The bearing cover in the bearing connection device is provided with a fixed connection component that matches the traveling mechanism.

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