A towing device for a submersible to enter a maintenance culvert and a maintenance culvert

Abstract

This invention discloses a traction device and a maintenance culvert for a deep-sea submersible undergoing maintenance. The traction device includes: a first traction assembly disposed on both sides of the axis of the maintenance culvert and movable along the axis of the maintenance culvert; a traction rope for connecting the first traction assembly to both ends of the deep-sea submersible and driving the deep-sea submersible to move within the maintenance culvert via the first traction assembly; and a second traction assembly for providing traction force to both sides of the deep-sea submersible after it has been pulled into position by the first traction assembly, to prevent the deep-sea submersible from swaying. By applying force to both ends of the deep-sea submersible using the traction rope via the first traction assembly, the deep-sea submersible can be dragged within the maintenance culvert, thereby reaching a designated position within the maintenance culvert. Simultaneously, the second traction assembly provides traction force to both sides of the deep-sea submersible to prevent swaying and ensure stable positioning of the deep-sea submersible.

Description

Technical Field

[0001] This invention relates to the field of nuclear energy maintenance technology, specifically to a traction device and maintenance culvert for deep-sea submersibles undergoing maintenance. Background Technology

[0002] Due to their complex structure and enormous size, deep-sea submersibles face significant challenges in accessing specific maintenance ports and culverts, especially those carrying nuclear facilities. The special requirements for nuclear device maintenance necessitate extremely high precision in the submersible's movement. For submersibles exceeding 100 meters in length, when entering a maintenance port that is a culvert, if the surrounding space is limited and the distance to the culvert wall on both sides is less than 1 meter, manual control is difficult, and collisions are highly likely.

[0003] For safety reasons, a dedicated port access maintenance facility is needed. Currently, deep-sea submersible maintenance relies on manual short-distance movement and positioning, which is not only time-consuming and labor-intensive but also ineffective. If manual methods are used, the maintenance of some large deep-sea submersibles would require hundreds of people to coordinate and direct precise movement, which not only makes management and scheduling difficult but also results in poor economic efficiency and excessively long maintenance cycles for such submersibles. Summary of the Invention

[0004] The purpose of this invention is to address the problem that relying on manual movement and positioning when a deep-sea submersible enters a maintenance culvert is time-consuming, labor-intensive, and ineffective. This invention provides a traction device and maintenance culvert for deep-sea submersibles entering a maintenance culvert, which can realize automated traction of deep-sea submersibles entering the culvert and solve the problem of movement and positioning when deep-sea submersibles enter the culvert.

[0005] This invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides a traction device for deep-sea submersible entering a maintenance culvert, which is installed inside the maintenance culvert and includes:

[0007] The first traction component is disposed on both sides of the axis of the maintenance culvert and can reciprocate linearly along the axis of the maintenance culvert.

[0008] A tow rope is used to connect the first towing assembly to both ends of the submersible and to drive the submersible to move within the maintenance culvert via the first towing assembly.

[0009] The second traction assembly is used to provide traction force to both sides of the submersible during the traction process of the first traction assembly to the submersible, so as to prevent the submersible from swaying.

[0010] In the above scheme, the first traction component applies force to both ends of the submersible using traction ropes, which can drag the submersible to move within the maintenance culvert, thereby bringing the submersible to the designated position within the maintenance culvert. At the same time, during the traction process, the second traction component provides traction force to both sides of the submersible to prevent it from swaying, keep the submersible stable, and meet the high static requirements during nuclear reactor refueling. Compared with traditional manual operation methods, this scheme has advantages such as high traction efficiency, good accuracy, and it is also conducive to shortening the maintenance cycle within the culvert and reducing labor costs.

[0011] In some embodiments, the first traction component includes:

[0012] Multiple first tractor vehicles are respectively set on both sides of the axis of the maintenance culvert, and can move back and forth in a straight line along the axis of the maintenance culvert;

[0013] Multiple first winches are respectively installed on multiple first tractor vehicles, and one end of the traction rope is connected to the first winch and wound around the first winch.

[0014] In the above scheme, the first tractor carries the first winch and moves along the axis of the maintenance culvert. This allows the direction of the tension applied to both ends of the submersible by the traction rope to be adjusted. The first winch can also be used to raise and lower the traction rope, thereby adjusting the tension of the traction rope and enabling the submersible to be towed.

[0015] In some embodiments, the first traction assembly further includes two linear tracks, which are respectively disposed on both sides of the axis of the maintenance culvert, and the linear tracks are arranged parallel to the axis of the maintenance culvert, and the first traction vehicle is movably disposed on the linear tracks.

[0016] In the above scheme, by setting straight tracks on both sides of the maintenance culvert, the first tractor can travel along the straight tracks and the direction of travel of the first tractor is ensured.

[0017] In some embodiments, the second traction component includes:

[0018] Multiple second tractor vehicles are respectively set on both sides of the axis of the maintenance culvert, and can move back and forth in a straight line along the axis of the maintenance culvert;

[0019] An anchor chain-like device is used to connect the second tractor to both sides of the submersible, and the movement of the second tractor causes the anchor chain-like device to provide a pushing and pulling force to both sides of the submersible.

[0020] In the above scheme, by moving the second tractor along the axis of the maintenance culvert, the direction of the force exerted by the anchor chain on both sides of the submersible can be adjusted. At the same time, since the anchor chain can provide pushing and pulling force to the submersible, this can better reduce the swaying of the submersible due to water surface fluctuations.

[0021] In some embodiments, the second traction assembly further includes a plurality of second winches, each disposed on a plurality of second tractors, and one end of the anchor chain is connected to and wound around the second winch.

[0022] In the above scheme, the second winch can be used to retract and extend the anchor chain, thereby achieving centralized storage of the anchor chain in a cable-like manner.

[0023] In some embodiments, the second winch is provided with a groove for limiting the anchor chain-like movement.

[0024] In the above scheme, by setting grooves on the second winch, the bottom anchor chains can be regularly fixed in the grooves without misalignment or slippage. Since the bottom anchor chains are regularly wound on the second winch, the winding and fixing of the anchor chains can be achieved layer by layer.

[0025] In some embodiments, the anchor chain includes a plurality of anchor chain segments connected in sequence. Each anchor chain segment has a first end and a second end. The first end has a connecting hole. An elastic connector and a snap-fit ​​mechanism are provided between adjacent anchor chain segments. The elastic connector is used to allow the second end of an adjacent anchor chain segment to enter the connecting hole and to snap-fit ​​under the action of the snap-fit ​​mechanism.

[0026] In the above scheme, the anchor chain-like structure is composed of multiple anchor chain segments connected sequentially. When the anchor chain-like structure is extended, the tension generated by the elastic connector allows the second end of the adjacent anchor chain segment to enter the connecting hole, and the connecting parts of the adjacent anchor chain segments are locked together by the snap-fit ​​mechanism. This forms a rigid rod-like structure, enabling the anchor chain-like structure to withstand a certain amount of pushing and pulling force, thereby better stabilizing the deep-sea submersible. When the anchor chain-like structure is retracted, the second winch applies force to extend the elastic connector, causing the second end of the adjacent anchor chain segment to exit the connecting hole, thus winding the anchor chain-like structure around the second winch.

[0027] In some embodiments, the elastic connector includes an elastic rope, one end of which is connected to the second end of an adjacent anchor chain segment, and the other end of which is connected to a connection hole in an adjacent anchor chain segment.

[0028] In the above scheme, by using an elastic rope to connect adjacent anchor chains, the elastic rope can be stretched well when the second winch retracts the anchor chain. At the same time, when the anchor chain is released, the elastic rope will contract and bring the second end of the adjacent anchor chain segment into the connecting hole.

[0029] In some embodiments, the snap-fit ​​mechanism includes a slot disposed in the connection hole and a snap-fit ​​head formed on the second end, the snap-fit ​​head cooperating with the slot to achieve snap-fit ​​of adjacent anchor chain segments.

[0030] In the above scheme, when the second end of the adjacent anchor chain segment enters the connecting hole, the second end can be inserted into the slot in the connecting hole through the clamping head to achieve the clamping connection between the two.

[0031] Secondly, the present invention provides a deep-sea submersible maintenance culvert, including the traction device for entering the culvert for maintenance as described in the first aspect.

[0032] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0033] 1. In this invention, the first traction component applies force to both ends of the submersible using a traction rope, which can drag the submersible within the maintenance culvert, thereby bringing it to the designated position within the culvert. Simultaneously, during the traction process, the second traction component provides support to both sides of the submersible, ensuring that the water flow does not cause lateral movement, thus preventing swaying and maintaining stability. This also meets the high static requirements during nuclear reactor refueling. Compared to traditional manual methods, this invention offers advantages such as high fixing efficiency, good stability, shorter maintenance cycle, and reduced labor costs.

[0034] 2. In this invention, the anchor chain-like structure is composed of multiple anchor chain segments connected sequentially. Each anchor chain segment is connected and fixed to the submersible via a dedicated mounting rod. When the anchor chain-like structure is deployed, the tension generated by the elastic connector inside the anchor chain rod allows the thinner end of the preceding anchor chain segment to enter the thicker connecting hole of the adjacent following anchor chain segment. The connecting parts of these two adjacent anchor chain segments are then clamped together by clamping mechanisms at both ends. This process is repeated to gradually form a rigid rod structure of a certain length, ultimately forming a fixed structure similar to a steel pipe of a certain length. This allows the anchor chain segment to withstand a certain amount of pushing and pulling force, thereby better stabilizing the submersible. When the anchor chain-like structure is retracted, the second winch applies force to extend the elastic connector, causing the second end of the adjacent anchor chain segment to exit the connecting hole, thus winding the anchor chain-like structure onto the second winch. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0036] Figure 1 This is a schematic diagram of the traction device for deep-sea submersible maintenance in the culvert of the present invention.

[0037] Figure 2 This is a schematic diagram of the anchor chain-like combination in the present invention;

[0038] Figure 3 This is a schematic diagram of the connection between adjacent anchor chain segments;

[0039] Figure 4 for Figure 3 A magnified view of part A in the diagram (the card head has not yet entered the card slot);

[0040] Figure 5 This is a schematic diagram of a chain-like anchoring and unloading structure.

[0041] The attached diagram shows the markings and corresponding component names:

[0042] 1-First tractor, 2-Traction rope, 3-Second tractor, 4-Type anchor chain, 41-Anchor chain segment, 42-Connecting hole, 43-Elastic connector, 44-Slot, 45-Clip head, 5-Straight track, 6-Deep submersible, 7-Second winch, 71-Groove, 8-Second winch motor. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0045] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0046] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0048] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0049] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces), unless otherwise explicitly specified.

[0050] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0051] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0052] Example 1

[0053] Please refer to Figures 1-5 This application provides a traction device for a deep-sea submersible undergoing maintenance in a culvert. The device is installed inside the culvert and includes a first traction component, a traction rope 2, and a second traction component. The first traction component is located on both sides of the axial direction of the culvert and can reciprocate linearly along the axial direction of the culvert. The traction rope 2 connects the first traction component to both ends of the deep-sea submersible 6 and drives the deep-sea submersible 6 to move within the culvert via the first traction component. The second traction component provides traction force to both sides of the deep-sea submersible 6 during the traction process by the first traction component, preventing the deep-sea submersible 6 from swaying.

[0054] The maintenance culvert is the foundation of the culvert-type maintenance harbor. It is built on the water surface, with part of the culvert located below the water and part above it. After the submersible enters the maintenance culvert along its axis, it floats on the water surface by adjusting its buoyancy.

[0055] By using the first traction assembly to apply force to both ends of the submersible with traction ropes, the submersible can be dragged within the maintenance culvert, thereby reaching the designated position within the culvert. Simultaneously, during the traction process, the second traction assembly provides traction force to both sides of the submersible to prevent it from swaying, keeping it stable and meeting the high static requirements during nuclear reactor refueling. Compared with traditional manual operation methods, this method has advantages such as high traction efficiency, good accuracy, and also helps to shorten the maintenance cycle within the culvert and reduce labor costs.

[0056] According to some embodiments of this application, the first traction assembly includes a plurality of first traction vehicles 1 and a plurality of first winches. The plurality of first traction vehicles 1 are respectively disposed on both sides of the axis of the maintenance culvert and can reciprocate linearly along the axis of the maintenance culvert. The plurality of first winches are respectively disposed on the plurality of first traction vehicles 1, and one end of the traction rope 2 is connected to the first winch and wound on the first winch.

[0057] The first tractor 1 can be equipped with a first traction motor and rollers. The rotation of the first traction motor drives the rollers to move, thereby driving the first tractor to move back and forth in a straight line along the axis of the culvert being repaired. A first winch is installed on the first tractor and moves synchronously with it. The first winch motor can drive the first winch to rotate, realizing the function of raising and lowering the traction rope.

[0058] The first tractor carries the first winch and moves along the axis of the maintenance culvert. This allows the direction of the tension applied to both ends of the submersible by the traction rope to be adjusted. The first winch can also be used to raise and lower the traction rope, thereby adjusting the tension and enabling the submersible to be towed.

[0059] According to some embodiments of this application, the first traction assembly further includes two linear tracks 5, which are respectively disposed on both sides of the axis of the maintenance culvert, and the linear tracks 5 are arranged parallel to the axis of the maintenance culvert, and the first traction vehicle 1 is movably disposed on the linear tracks 5.

[0060] Specifically, the linear track 5 may include a gear track and a guide track. The gear track is parallel to the central axis of the maintenance culvert and has multiple teeth along the central axis of the maintenance culvert. The guide track is parallel to the gear track. A gear is installed at the output end of the first traction motor. The gear and the gear track cooperate to drive the rollers along the guide track, thereby enabling the first traction vehicle to move along the axial direction of the maintenance culvert.

[0061] By setting straight tracks on both sides of the maintenance culvert, the first tractor can travel along the straight tracks, and the direction of travel of the first tractor is ensured.

[0062] According to some embodiments of this application, the second traction assembly includes a plurality of second traction vehicles 3 and a type of anchor chain 4. The plurality of second traction vehicles 3 are respectively disposed on both sides of the axis of the maintenance culvert and can reciprocate linearly along the axis of the maintenance culvert. The type of anchor chain 4 is used to connect the second traction vehicles 3 with both sides of the deep-sea submersible 6, and the movement of the second traction vehicles 3 causes the type of anchor chain 4 to provide a pushing and pulling force on both sides of the deep-sea submersible 6.

[0063] The second tractor 3 can be equipped with a second traction motor and rollers. A gear is installed at the output end of the second traction motor. The gear and the gear track work together to drive the rollers to move along the guide track, thereby enabling the second tractor to move along the axis of the maintenance culvert.

[0064] By moving the second tractor along the axis of the maintenance culvert, the direction of the force exerted by the anchor chain on both sides of the submersible can be adjusted. At the same time, since the anchor chain can provide pushing and pulling forces to the submersible, this can better reduce the swaying of the submersible due to water surface fluctuations.

[0065] According to some embodiments of this application, the second traction assembly further includes a plurality of second winches 7, which are respectively disposed on a plurality of second tractor vehicles 3, and one end of the anchor chain 4 is connected to the second winch 7 and wound around the second winch 7.

[0066] The second winch 7 is mounted on the second tractor 3. It moves synchronously with the second tractor 3 and can be driven to rotate by the second winch motor 8 to realize the function of raising and lowering the anchor chain 4.

[0067] The second winch can be used to retract and extend the anchor chain, thus enabling the anchor chain to be centrally stored in a manner similar to that of a cable.

[0068] According to some embodiments of this application, the second winch 7 is provided with a groove 71 for limiting the anchor chain 4. The second winch 7 has a regular hexagonal columnar structure, and the groove 71 can be a U-shaped groove arranged on the outer surface of the second winch 7 in a spiral shape.

[0069] By setting grooves on the second winch, the bottom anchor chains can be regularly fixed in the grooves without misalignment or slippage. Since the bottom anchor chains are regularly wound around the second winch, the winding and fixing of the anchor chains can be achieved layer by layer.

[0070] According to some embodiments of this application, the anchor chain 4 includes a plurality of anchor chain segments 41 connected in sequence. Each anchor chain segment 41 has a first end and a second end. The first end has a connecting hole 42. An elastic connector 43 and a snap-fit ​​mechanism are provided between adjacent anchor chain segments 41. The elastic connector 43 is used to allow the second end of the adjacent anchor chain segment 41 to enter the connecting hole 42 and to achieve snap-fit ​​under the action of the snap-fit ​​mechanism.

[0071] The anchor chain segment 41 can adopt a circular tube structure, having a main segment and an enlarged segment. The end of the main segment furthest from the enlarged segment is the second end. The enlarged segment can be a conical structure, with its internal cavity forming a conical connecting hole 42. To facilitate the smooth entry of the second end of adjacent anchor chain segments 41 into the connecting hole 42, the enlarged segment can be sequentially divided into a conical first enlarged segment and a second enlarged segment from the first end to the second end. The connecting hole inside the enlarged segment is then correspondingly divided into a first connecting hole segment and a second connecting hole segment, with the opening of the first connecting hole segment being larger than that of the second connecting hole segment. This allows the first connecting hole segment to act as a guide when the second end of an adjacent anchor chain segment enters the connecting hole, making it easier for the second end to enter.

[0072] The anchor chain-like structure is composed of multiple anchor chain segments connected sequentially. When the anchor chain-like structure is extended, the tension generated by the elastic connector allows the second end of the adjacent anchor chain segment to enter the connecting hole, and the connecting parts of the adjacent anchor chain segments are locked together by the snap-fit ​​mechanism. This forms a rigid rod-like structure, allowing the anchor chain-like structure to withstand a certain amount of pushing and pulling force, thereby better stabilizing the deep-sea submersible. When the anchor chain-like structure is retracted, the second winch applies force to extend the elastic connector, causing the second end of the adjacent anchor chain segment to exit the connecting hole, thus winding the anchor chain-like structure onto the second winch.

[0073] Unlike traditional anchor chains or tow ropes, this type of anchor chain avoids the possibility that traditional anchor chains or tow ropes can only withstand tension but not compression. Through multiple anchor chains on both sides of the submersible, it can effectively achieve pushing and pulling action, better stabilize the submersible, and ensure that it will not move due to water flow disturbance or surface swaying.

[0074] According to some embodiments of this application, the elastic connector 43 includes an elastic rope, one end of which is connected to the second end of an adjacent anchor chain segment 41, and the other end of which is connected to a connection hole in an adjacent anchor chain segment 41.

[0075] By using an elastic rope to connect adjacent anchor chains, the elastic rope can be stretched well when the second winch retracts the anchor chain. At the same time, when the anchor chain is released, the elastic rope will contract and bring the second end of the adjacent anchor chain segment into the connection hole.

[0076] According to some embodiments of this application, the snap-fit ​​mechanism includes a slot 44 disposed in the connection hole 42 and a snap-fit ​​head 45 formed on the second end, wherein the snap-fit ​​head 45 cooperates with the slot 44 to achieve snap-fit ​​of adjacent anchor chain segments.

[0077] Specifically, the slot 44 is an arc-shaped groove arranged circumferentially along the inner wall of the connecting hole 42, and can be disposed on the inner wall of the second connecting hole section. The clip 45 can be a hemispherical end formed at the second end.

[0078] When the second end of the adjacent anchor chain segment 41 enters the connecting hole 42, it can be engaged by the locking head 45 at the second end entering the locking groove 44 on the inner wall of the connecting hole 42. This structural design, because the connecting hole is tapered, provides excellent resistance to thrust, and the locking head and groove also allow it to withstand a certain amount of tensile force.

[0079] It should be noted that, in order to connect the tow rope and anchor chain-like device to the submersible, a fixed joint can be installed on the submersible, and the tow rope and anchor chain-like device can be connected through the fixed joint. Alternatively, a permanent magnet chuck joint can be used, which magnetically attaches to the outer wall of the submersible, and the tow rope and anchor chain-like device can be connected to the permanent magnet chuck joint.

[0080] According to some embodiments of this application, the traction device further includes a monitoring component and a controller. The monitoring component is disposed on the inner side of the maintenance culvert and is used to determine the position of the submersible within the maintenance culvert. The controller is electrically connected to the monitoring component, the first traction motor, the first winch motor, the second traction motor, and the second winch motor. The monitoring component may include sensors such as lidar and stereo cameras to capture surrounding external information and transmit it to the controller.

[0081] The monitoring components can determine the submersible's position within the maintenance culvert. If the submersible's position needs to be changed, the controller controls the first traction motor and the first winch motor, causing the first traction vehicle to move. Simultaneously, the first winch winds up and down the traction rope, thus dragging the submersible. During the submersible's towing process, the controller can control the second traction motor and the second winch motor, causing the second traction vehicle to move. Simultaneously, the second winch winds up and down a chain-like mechanism, applying traction force to both sides of the submersible.

[0082] According to some embodiments of this application, in order to meet the high static requirements during nuclear reactor refueling, multiple telescopic outriggers can be installed on both the first and second tractor vehicles. Once the submersible reaches the designated position and the positions of the first and second tractor vehicles are determined, the telescopic outriggers can be extended for auxiliary fixation.

[0083] Example 2

[0084] This application provides a deep-sea submersible maintenance culvert, including the traction device for entering the culvert for maintenance as described in Embodiment 1. The distance between the inner side of the maintenance culvert and the outer wall of the deep-sea submersible is no more than 1m. Personnel passages are provided on the left and right sides of the maintenance culvert, and the first and second traction components of the traction device are disposed within the personnel passages.

[0085] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A traction device for deep-sea submersible entering a culvert for maintenance, installed inside the maintenance culvert, characterized in that, include: The first traction component is disposed on both sides of the axis of the maintenance culvert and can reciprocate linearly along the axis of the maintenance culvert. A tow rope is used to connect the first towing assembly to both ends of the submersible and to drive the submersible to move within the maintenance culvert via the first towing assembly. The second traction assembly is used to provide traction force to both sides of the submersible during the traction process of the first traction assembly to the submersible, so as to prevent the submersible from swaying. The second traction component includes: Multiple second tractor vehicles are respectively set on both sides of the axis of the maintenance culvert, and can move back and forth in a straight line along the axis of the maintenance culvert; An anchor chain is used to connect the second tractor to both sides of the deep-sea submersible, and the movement of the second tractor causes the anchor chain to provide a pushing and pulling force on both sides of the deep-sea submersible. The anchor chain includes multiple anchor chain segments connected in sequence. Each anchor chain segment has a first end and a second end. The first end has a connecting hole. An elastic connector and a snap-fit ​​mechanism are provided between adjacent anchor chain segments. The elastic connector is used to allow the second end of the adjacent anchor chain segment to enter the connecting hole and to snap-fit ​​under the action of the snap-fit ​​mechanism.

2. The traction device for deep-sea submersible maintenance as described in claim 1, characterized in that, The first traction component includes: Multiple first tractor vehicles are respectively set on both sides of the axis of the maintenance culvert, and can move back and forth in a straight line along the axis of the maintenance culvert; Multiple first winches are respectively installed on multiple first tractor vehicles, and one end of the traction rope is connected to the first winch and wound around the first winch.

3. The traction device for deep-sea submersible maintenance as described in claim 2, characterized in that, The first traction assembly also includes two linear tracks, which are respectively arranged on both sides of the axis of the maintenance culvert, and the linear tracks are arranged parallel to the axis of the maintenance culvert. The first traction vehicle is movably arranged on the linear tracks.

4. The traction device for deep-sea submersible maintenance as described in claim 1, characterized in that, The second traction assembly also includes a plurality of second winches, which are respectively disposed on a plurality of second tractor vehicles, and one end of the anchor chain is connected to the second winch and wound around the second winch.

5. The traction device for deep-sea submersible maintenance as described in claim 4, characterized in that, The second winch is provided with a groove for limiting the anchor chain.

6. The traction device for deep-sea submersible maintenance as described in claim 1, characterized in that, The elastic connector includes an elastic rope, one end of which is connected to the second end of an adjacent anchor chain segment, and the other end of which is connected to a connecting hole in an adjacent anchor chain segment.

7. The traction device for deep-sea submersible maintenance as described in claim 1, characterized in that, The snap-fit ​​mechanism includes a slot disposed in the connection hole and a snap-fit ​​head formed at the second end, wherein the snap-fit ​​head cooperates with the slot to snap-fit ​​adjacent anchor chain segments.

8. A deep-sea submersible maintenance culvert, characterized in that, Includes the towing device for deep-sea submersible culvert maintenance as described in any one of claims 1-7.

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