Cable winding and unwinding device and pipeline maintenance system

Abstract

The utility model discloses a cable take-up and pay-off device and a pipeline maintenance system, the cable take-up and pay-off device comprises a shell, the shell is internally provided with a containing cavity, a side plate of the shell is provided with an opening communicated with the containing cavity, and the bottom of the shell is provided with walking wheels; the cable winding and unwinding mechanism comprises a cable wheel assembly and a cable guide assembly, the cable wheel assembly is rotatably arranged in the containing cavity, and the cable guide assembly is connected to the shell; wherein the cable wheel assembly is used for winding a cable, one end of the cable penetrates through the cable guide assembly and extends out of the containing cavity through the opening, and the other end of the cable is used for being connected with a pipeline maintenance device. The cable take-up and pay-off device is convenient to move.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline maintenance, in particular to a cable retracting and releasing device and a pipeline maintenance system. Background Art

[0002] With the development of society, pipeline networks are increasingly used in infrastructure. For example, vast pipeline networks are installed in fields such as electricity, gas, water, heat, and chemicals. These pipelines are distributed everywhere like blood vessels. Failure in any of these pipelines can have an impact on society and individuals, and can even cause irreparable losses.

[0003] Patent document with announcement number CN217911995U discloses a cable duct clearing robot, which can clean cable ducts. It has a control wire reel for winding control signal wires. However, the control wire reel must be lifted manually for transportation, which is inconvenient to move. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model provides a mobile cable retracting and releasing device.

[0005] The utility model also provides a pipeline maintenance system with the cable retracting and releasing device.

[0006] According to the cable retracting device of the first aspect embodiment of the present utility model, it includes: a shell, a accommodating cavity is provided inside the shell, the side panel of the shell is provided with an opening connected to the accommodating cavity, and the bottom of the shell is provided with a walking wheel; a cable retracting mechanism, the cable retracting mechanism includes a cable wheel assembly and a cable guide assembly, the cable wheel assembly is rotatably arranged in the accommodating cavity, and the cable guide assembly is connected to the shell; wherein, the cable wheel assembly is used for cable winding, one end of the cable passes through the cable guide assembly and extends out of the accommodating cavity through the opening, and one end of the cable is used to connect the pipeline maintenance device.

[0007] The cable retracting device according to the embodiment of the present invention has at least the following beneficial effects:

[0008] In the cable retracting device of the present invention, the cable retracting device can store cables and pay out cables, thereby enabling the pipeline maintenance device to be moved farther away from the cable retracting device. Moreover, when the pipeline maintenance device approaches the cable retracting device, the cable retracting device can also reel up the cables. Specifically, the cable retracting mechanism includes a cable wheel assembly and a cable guide assembly. The cable wheel assembly is rotatably connected to the housing and is located within the accommodating cavity. The cable wheel assembly is used for winding cables, thereby preventing the cables from being cluttered and piled up within the housing. Furthermore, the cable wheel assembly can be rotated to achieve the action of taking up or paying out the cables. The cable guide assembly is used to guide the cables. By providing running wheels at the bottom of the housing, the movement of the cable retracting device can be facilitated by means of the running wheels.

[0009] According to some embodiments of the present invention, a guide rail is further provided in the accommodating cavity, the length direction of the guide rail is parallel to the axial direction of the cable wheel assembly, and the cable guide assembly is movably connected to the guide rail.

[0010] According to some embodiments of the present invention, the cable guiding assembly includes a bracket connected to the housing, a transverse limiting unit arranged on the bracket, and a vertical limiting unit arranged on the bracket, the transverse limiting unit having a transverse limiting gap for the cable to pass through, the vertical limiting unit having a vertical limiting gap for the cable to pass through, and at least a portion of the transverse limiting gap is arranged relative to at least a portion of the vertical limiting gap.

[0011] According to some embodiments of the present invention, the lateral limiting unit includes two vertical rollers that are spaced apart and arranged side by side along the lateral direction, and the lateral limiting gap is formed between the two vertical rollers. The vertical limiting unit includes two lateral rollers that are spaced apart and arranged side by side along the vertical direction, and the vertical limiting gap is formed between the two lateral rollers.

[0012] According to some embodiments of the present invention, the transverse limiting unit and the vertical limiting unit are both located outside the opening.

[0013] According to some embodiments of the present invention, the cable wheel assembly includes a cable wheel rotatably disposed in the accommodating cavity, and a rotating driving member disposed in the accommodating cavity and used to drive the cable wheel to rotate forward or reverse.

[0014] According to some embodiments of the present invention, a partition is provided in the accommodating chamber, and the partition divides the accommodating chamber into a first chamber and a second chamber. The rotary drive member is provided in the first chamber, and the cable wheel is provided in the second chamber.

[0015] According to some embodiments of the present invention, a handle is rotatably connected to the housing, and the handle can be operably flipped upward or downward.

[0016] According to some embodiments of the present invention, a meter is installed on the housing.

[0017] According to the second embodiment of the present invention, the pipeline maintenance system includes: the cable retracting device as described above; and a pipeline maintenance device connected to one end of the cable.

[0018] The pipeline maintenance system according to the embodiment of the utility model has at least the following beneficial effects:

[0019] In the pipeline maintenance system of the present invention, the cable retracting device can store cables and pay out cables, so that the pipeline maintenance device can be moved to a distance away from the cable retracting device. Moreover, when the pipeline maintenance device approaches the cable retracting device, the cable retracting device can also reel up the cables. Specifically, the cable retracting mechanism includes a cable wheel assembly and a cable guide assembly. The cable wheel assembly is rotatably connected to the housing and is located in the accommodating cavity. The cable wheel assembly is used for winding the cables, thereby preventing the cables from being cluttered and piled up in the housing. In addition, the cable wheel assembly can be rotated to achieve the action of taking up or paying out the cables. The cable guide assembly is used to guide the cables. By providing a running wheel at the bottom of the housing, the running wheel can facilitate the movement of the cable retracting device.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a structural diagram of a pipeline maintenance system according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a cable retracting device according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the structure of a cable retracting device according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 4 This is a partial structural diagram of a cable retracting device according to an embodiment of the present invention;

[0026] Figure 5This is a schematic cross-sectional view of a cable retracting device according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the guide rail and cable guide assembly of an embodiment of the present invention. Figure 1 ;

[0028] Figure 7 This is a schematic diagram of the structure of the guide rail and cable guide assembly of an embodiment of the present invention. Figure 2 ;

[0029] Figure 8 This is a schematic structural diagram of a connector according to an embodiment of the present invention;

[0030] Figure 9 This is a schematic cross-sectional structural diagram of a connector according to an embodiment of the present invention.

[0031] Figure Number:

[0032] 100. Cable retracting and releasing device; 110. Housing; 111. Accommodating chamber; 1111. First chamber; 1112. Second chamber; 112. Opening; 120. Cable retracting and releasing mechanism; 121. Cable wheel assembly; 1211. Cable wheel; 122. Cable guide assembly; 1221. Bracket; 1222. Horizontal limiting unit; 12221. Vertical roller; 1223. Vertical limiting unit; 12231. Horizontal roller; 123. Conductive slip ring; 130. Travel wheel; 140. Handle; 150. Guide rail; 160. Meter counter; 170. Partition; 180. Processing module; 181. Emergency module; 190. Connector; 191. Load-bearing connector; 192. Cable connector; 193. Connector; 194. Cable anti-bending sheath;

[0033] 200, cables;

[0034] 300. Pipeline maintenance device. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] like Figure 1 As shown, the present invention provides a pipeline maintenance system comprising a cable retractor 100 and a pipeline maintenance device 300, wherein the cable retractor 100 and the pipeline maintenance device 300 are connected via a cable 200. The cable retractor 100 can store cables and pay out the cables 200, thereby enabling the pipeline maintenance device 300 to be moved farther away from the cable retractor 100. Furthermore, when the pipeline maintenance device 300 approaches the cable retractor 100, the cable retractor 100 can reel in the cables 200. The pipeline maintenance device 300 can enter a pipeline to inspect and repair the pipeline.

[0039] It should be noted that the cable 200 is a power cable. By connecting the cable retractable device 100 and the pipeline maintenance device 300 using the cable 200, power and signal transmission between the cable retractable device 100 and the pipeline maintenance device 300 can be achieved.

[0040] Combine Figure 2 and Figure 3 The cable retracting device 100 includes a housing 110 and a cable retracting mechanism 120 .

[0041] The housing 110 is a main protective frame for mounting other components and protecting the components disposed therein. A running wheel 130 is disposed at the bottom of the housing 110 , which facilitates the movement of the cable retracting and unretracting device 100 .

[0042] Specifically, the number of the running wheels 130 can be three or more. The running wheels 130 are used to provide stable support for the housing 110. Moreover, the running wheels 130 are universal wheels, which can make the cable retracting device 100 turn during movement more flexible.

[0043] Furthermore, a handle 140 is rotatably connected to the housing 110 , and the handle 140 is operable to flip upward or downward.

[0044] Specifically, the handle 140 is arranged on the rear side of the shell 110. The handle 140 can be flipped down and folded to reduce the occupied space. In addition, the handle 140 can also be flipped upward so that the operation and maintenance personnel can hold it to drive the cable retracting device 100 to move. In addition, the operation and maintenance personnel can drive the cable retracting device 100 to change its direction of travel by operating the handle 140.

[0045] Combine Figure 2 and Figure 3 The housing 110 has an interior with an accommodating cavity 111 , and a side plate of the housing 110 has an opening 112 communicating with the accommodating cavity 111 .

[0046] Specifically, the housing 110 is a hollow structure having a receiving cavity 111 , and a front side panel of the housing 110 is provided with an opening 112 . Of course, in other embodiments, the opening 112 may also be provided on other side panels of the housing 110 .

[0047] Combine Figure 2 and Figure 3 The cable retracting and releasing mechanism 120 includes a cable wheel assembly 121 and a cable guide assembly 122 . The cable wheel assembly 121 is rotatably disposed in the accommodating cavity 111 , and the cable guide assembly 122 is connected to the housing 110 .

[0048] Specifically, the cable wheel assembly 121 is rotatably connected to the housing 110 and is located in the accommodating cavity 111. The cable wheel assembly 121 is used for winding the cable 200, thereby preventing the cable 200 from being cluttered in the housing 110. The cable wheel assembly 121 can rotate to achieve the action of winding or releasing the cable.

[0049] like Figure 4 As shown, more specifically, the cable wheel assembly 121 includes a cable wheel 1211 rotatably disposed in the accommodating cavity 111, and a rotation driving member (not shown) disposed in the accommodating cavity 111 and used to drive the cable wheel 1211 to rotate forward or reverse.

[0050] It is understandable that the cable 200 is used to be wound around the cable wheel 1211, and the rotary driving member drives the cable wheel 1211 to rotate forward or reverse, thereby realizing the action of winding or unwinding the cable.

[0051] It should be noted that the rotating driving member is a motor, which is in transmission connection with the cable wheel 1211 , and is used to drive the cable wheel 1211 to rotate forward or reverse.

[0052] A partition 170 is provided in the accommodating chamber 111 , which divides the accommodating chamber 111 into a first chamber 1111 and a second chamber 1112 . The rotary driving member is provided in the first chamber 1111 , and the cable wheel 1211 is provided in the second chamber 1112 .

[0053] Specifically, a through hole is provided on the partition 170, which connects the rotary drive member to the cable wheel 1211. The partition 170 is used to separate the cable wheel 1211 from the rotary drive member, thereby isolating the cable 200 from the rotary drive member and reducing the risk of the cable 200 being entangled in the rotary drive member.

[0054] like Figure 2 As shown, it can be understood that the cable retractable device 100 further includes a processing module 180. One end of the cable 200 is used to connect to the pipeline maintenance device 300, and the other end of the cable 200 is connected to the processing module 180. In addition, the cable 200 is also wound around the cable wheel 1211. The processing module 180 can control the pipeline maintenance device 300 through the cable 200. Of course, the processing module 180 can also control the components within the cable retractable device 100.

[0055] like Figure 5 As shown, specifically, a conductive slip ring 123 is provided inside the housing 110. The conductive slip ring 123 has a rotating structure and a fixed structure that are conductively connected to each other. The rotating structure is rotatable relative to the fixed structure. The end of the cable 200 away from the pipeline maintenance device 300 is connected to the rotating structure of the conductive slip ring 123. The fixed structure of the conductive slip ring 123 is fixedly connected to the housing 100. In addition, the processing module 180 is connected to the fixed structure of the conductive slip ring 123 through a wire. In this way, the processing module 180 can transmit relevant control instructions to the control pipeline maintenance device 300 through the wire and the cable 200.

[0056] It should be noted that the cable 200 is wound around the cable wheel 1211 and will rotate with the cable wheel 1211. By connecting the end of the cable 200 away from the pipeline maintenance device 300 to the rotating structure of the conductive slip ring 123, the cable 200 can be prevented from being torn due to rotation.

[0057] Furthermore, the cable wheel assembly 121 can adjust the speed of cable retraction and extension based on the travel speed and direction of the pipeline maintenance device 300 .

[0058] It should be noted that the housing 110 is further provided with an emergency module 181 , and when an emergency occurs, the emergency module 181 can be pressed to shut down the machine immediately.

[0059] It should be noted that one end of the cable 200, that is, the end of the cable 200 away from the processing module 180, passes through the cable guide assembly 122 and extends out of the accommodating cavity 111 through the opening 112 of the shell 110 and is connected to the pipeline maintenance device 300. The cable guide assembly 122 is used to guide the cable 200.

[0060] In the cable retractor of the present invention, the cable retractor 100 can store cables and pay out cables 200, thereby allowing the pipeline maintenance device 300 to be moved farther away from the cable retractor 100. Furthermore, when the pipeline maintenance device 300 approaches the cable retractor 100, the cable retractor 100 can also reel in the cables 200. Specifically, the cable retractor mechanism 120 includes a cable wheel assembly 121 and a cable guide assembly 122. The cable wheel assembly 121 is rotatably connected to the housing 110 and located within the accommodating chamber 111. The cable wheel assembly 121 is used to wind the cables 200, thereby preventing the cables 200 from cluttering the housing 110. The cable wheel assembly 121 can rotate to achieve the winding or unwinding action, while the cable guide assembly 122 is used to guide the cables 200. Furthermore, a running wheel 130 is provided at the bottom of the housing 110, which facilitates the movement of the cable retractor 100.

[0061] Combine Figure 4 and Figure 6 In some embodiments, a guide rail 150 is further provided in the accommodating cavity 111 . The length direction of the guide rail 150 is parallel to the axial direction of the cable wheel assembly 121 , and the cable guide assembly 122 is movably connected to the guide rail 150 .

[0062] Specifically, the length direction of the guide rail 150 is parallel to the axial direction of the cable wheel 1211. The guide rail 150 can guide the cable guide assembly 122 to move, so that the cable guide assembly 122 can move synchronously with the cable reeling and releasing operation, so that the cable 200 is evenly wound on the cable wheel 1211 or leaves the cable wheel 1211.

[0063] It should be noted that the cable retracting mechanism 120 is divided into automatic mode and manual mode. In automatic mode, the cable retracting mechanism 120 operates synchronously with the pipeline maintenance device 300; in manual mode, when the pipeline maintenance device 300 moves forward, it will drive the cable retracting mechanism 120 to operate automatically. When the pipeline maintenance device 300 runs backward, the operation and maintenance personnel need to manually retract the cable according to the situation.

[0064] Combine Figure 6 and Figure 7 In some embodiments, the cable guide assembly 122 includes a bracket 1221 connected to the housing 110, a transverse limiting unit 1222 arranged on the bracket 1221, and a vertical limiting unit 1223 arranged on the bracket 1221, the transverse limiting unit 1222 has a transverse limiting gap for the cable 200 to pass through, and the vertical limiting unit 1223 has a vertical limiting gap for the cable 200 to pass through, and at least a portion of the transverse limiting gap is arranged relative to at least a portion of the vertical limiting gap.

[0065] It can be understood that the horizontal limiting unit 1222 is used to limit the horizontal movement of the cable 200, and the vertical limiting unit 1223 is used to limit the vertical movement of the cable 200. The cable 200 can pass through the horizontal limiting gap of the horizontal limiting unit 1222 and the vertical limiting gap of the vertical limiting unit 1223 at the same time, thereby being limited.

[0066] Specifically, the lateral limiting unit 1222 includes two vertical rollers 12221 that are spaced apart and arranged in parallel along the lateral direction, and a lateral limiting gap is formed between the two vertical rollers 12221. The vertical limiting unit 1223 includes two lateral rollers 12231 that are spaced apart and arranged in parallel along the vertical direction, and a vertical limiting gap is formed between the two lateral rollers 12231.

[0067] It can be understood that the vertical roller 12221 is arranged vertically and is rotatably connected to the bracket 1221, and the transverse roller 12231 is arranged transversely and is rotatably connected to the bracket 1221. The vertical roller 12221 and the transverse roller 12231 not only limit the cable 200, but also guide the cable 200.

[0068] Furthermore, the transverse limiting unit 1222 and the vertical limiting unit 1223 are both located outside the opening 112 of the housing 110 .

[0069] like Figure 4As shown, in some embodiments, a meter 160 is installed on the housing 110. When the cable 200 passes through the cable guide assembly 122, the meter 160 records the running distance of the cable 200. In this way, the specific position of the pipeline maintenance device 300 in the pipeline can be recorded, so that the defect position can be recorded and checked when a defect is found.

[0070] like Figure 2 As shown, in some embodiments, one end of the cable 200 for connecting to the pipeline maintenance device 300 is connected to a connector 190, combined with Figure 8 and Figure 9 The connector 190 includes a load-bearing connector 191, a cable connector 192, a connector 193, and a cable anti-bending sheath 194. The load-bearing connector 191 is a rigid connection that can withstand tension and can be connected to the pipeline maintenance device 300 and transmit force; one end of the cable connector 192 is connected to the cable 200, and the other end can be connected to the pipeline maintenance device 300. After connection, it can transmit signals and power; the connector 193 can form a closed space to protect the cable 200; the cable anti-bending sheath 194 is a sheath with a sealing function, which is connected to the connector 193 and is equipped with a seal inside. It can clamp and seal the cable 200 and prevent the cable 200 from bending and damage.

[0071] In the pipeline maintenance system of the present invention, the cable retracting device 100 can store cables and pay out cables 200, thereby allowing the pipeline maintenance device 300 to be moved farther away from the cable retracting device 100. Furthermore, when the pipeline maintenance device 300 approaches the cable retracting device 100, the cable retracting device 100 can also reel in the cables 200. Specifically, the cable retracting mechanism 120 includes a cable wheel assembly 121 and a cable guide assembly 122. The cable wheel assembly 121 is rotatably connected to the housing 110 and located within the accommodating chamber 111. The cable wheel assembly 121 is used to wind the cables 200, thereby preventing the cables 200 from cluttering the housing 110. The cable wheel assembly 121 can rotate to achieve the winding or unwinding action, while the cable guide assembly 122 is used to guide the cables 200. Furthermore, a running wheel 130 is provided at the bottom of the housing 110, which facilitates the movement of the cable retracting device 100.

[0072] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cable retracting device, characterized in that: include: A housing, wherein a receiving cavity is provided inside the housing, a side plate of the housing is provided with an opening communicating with the receiving cavity, and a bottom of the housing is provided with running wheels; a cable retracting and releasing mechanism, the cable retracting and releasing mechanism comprising a cable wheel assembly and a cable guide assembly, the cable wheel assembly being rotatably disposed in the accommodating cavity, and the cable guide assembly being connected to the housing; The cable wheel assembly is used for winding the cable, one end of the cable passes through the cable guide assembly and extends out of the accommodating cavity through the opening, and one end of the cable is used for connecting to the pipeline maintenance device; Among them, one end of the cable used to connect to the pipeline maintenance device is connected to a connector, and the connector includes a load-bearing connector, a cable connector, a connector and a cable anti-bending sheath, and the load-bearing connector is used to connect to the pipeline maintenance device; one end of the cable connector is connected to the cable, and the other end can be connected to the pipeline maintenance device to transmit signals and power; the connector is connected to the load-bearing connector, and the connector forms a closed space to protect the cable inside; the cable anti-bending sheath is connected to the connector to clamp and seal the cable.

2. The cable retracting device according to claim 1, characterized in that: A guide rail is further provided in the accommodating cavity, the length direction of the guide rail is parallel to the axial direction of the cable wheel assembly, and the cable guide assembly is movably connected to the guide rail.

3. The cable retracting device according to claim 1, wherein: The cable guide assembly includes a bracket connected to the housing, a transverse limiting unit arranged on the bracket, and a vertical limiting unit arranged on the bracket, the transverse limiting unit has a transverse limiting gap for the cable to pass through, and the vertical limiting unit has a vertical limiting gap for the cable to pass through, and at least a portion of the transverse limiting gap is arranged opposite to at least a portion of the vertical limiting gap.

4. The cable retracting device according to claim 3, characterized in that: The lateral limiting unit includes two vertical rollers that are spaced apart and arranged in parallel along the lateral direction, and the lateral limiting gap is formed between the two vertical rollers. The vertical limiting unit includes two lateral rollers that are spaced apart and arranged in parallel along the vertical direction, and the vertical limiting gap is formed between the two lateral rollers.

5. The cable retracting device according to claim 3, characterized in that: The transverse limiting unit and the vertical limiting unit are both located outside the opening.

6. The cable retracting device according to claim 1, characterized in that: The cable wheel assembly includes a cable wheel rotatably disposed in the accommodating cavity, and a rotation driving member disposed in the accommodating cavity and used for driving the cable wheel to rotate forward or reverse.

7. The cable retracting device according to claim 6, characterized in that: A partition is provided in the accommodating chamber, and the partition divides the accommodating chamber into a first chamber and a second chamber. The rotary driving member is provided in the first chamber, and the cable wheel is provided in the second chamber.

8. The cable retracting device according to claim 1, wherein: A handle is rotatably connected to the shell, and the handle can be operably flipped upward or downward.

9. The cable retracting device according to claim 1, wherein: A meter counter is installed on the shell.

10. A pipeline maintenance system, characterized in that: include: The cable retracting device according to any one of claims 1 to 9; A pipeline maintenance device is connected to one end of the cable.

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