Cable locking device and nuclear power plant maintenance equipment

Abstract

The utility model provides a kind of cable locking device and nuclear power plant maintenance equipment, wherein cable locking device includes: first fixed structure, second fixed structure, guide structure, sliding structure with guide structure sliding connection, locking structure with sliding structure fixed connection and be used for locking cable locking chain;Wherein, first fixed structure and second fixed structure are used to connect with the connecting rod of fixed cable connection;Guide structure is used to guide sliding structure to slide along the extension direction of guide structure;Locking structure is equipped with locking groove;Locking chain is equipped with the connecting end for being connected with connecting rod, locking chain is used to be wound on connecting rod from connecting end and cable is fixed on connecting rod, any part of locking chain in the length direction of itself is used to be inserted into locking groove, so that the tightness degree of locking chain is adjustable.By adopting the above technical scheme: eliminate foreign matter risk, improve the fixed reliability, operation is flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of nuclear power plant maintenance equipment, and more specifically, to a cable locking device and nuclear power plant maintenance equipment. Background Technology

[0002] During refueling overhauls at nuclear power plants, the insertion of new assemblies into the reactor core requires the matching of related components such as flow stoppers, control rods, and neutron sources. This process is called component replacement, or simply refueling. The power tools used for control rod and neutron source replacements have their power control boxes mounted on a spent fuel crane trolley, connected to the refueling tool's actuator via power and control cables lowered to the operating platform.

[0003] However, due to the lack of telescopic mechanisms such as cable reels in power tool cables, sufficient cable length must be reserved when unloading to meet the vertical movement requirements of the unloading tool. To prevent damage to the cable quick-connect fittings due to stress, excess cable must be secured. Currently, tape is commonly used to secure cables on-site, but this method has significant drawbacks: firstly, the tape is prone to detachment in the spent fuel pool environment, posing a risk of foreign objects and threatening the safety of fuel assemblies; secondly, tape fixation reliability is poor, with issues of breakage or weak adhesion leading to cable fixation failure, which may in turn cause connection failures in the unloading tool, affecting the safety and efficiency of refueling overhauls. Therefore, a new cable fixing technology is urgently needed to address the shortcomings of existing methods. Utility Model Content

[0004] The purpose of this invention is to provide a cable locking device and nuclear power plant maintenance equipment to solve the technical problem in the prior art where the tape used to fix the cable easily falls off during the refueling operation of a nuclear power plant, which threatens the safety and efficiency of the fuel assembly.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, a cable locking device is provided, comprising:

[0007] A first fixing structure, a second fixing structure arranged parallel to and spaced apart from the first fixing structure, a guide structure connecting the first fixing structure and the second fixing structure, a sliding structure slidably connected to the guide structure, a locking structure fixedly connected to the sliding structure, and a locking chain for locking the cable;

[0008] The first fixing structure and the second fixing structure are used to connect with the connecting rod of the fixed cable; the guide structure is used to guide the sliding structure to slide along the extension direction of the guide structure; the locking structure is provided with a locking groove for locking the locking chain; the locking chain is provided with a connecting end for connecting with the connecting rod, the locking chain is used to wrap around the connecting rod from the connecting end and fix the cable to the connecting rod, and any part of the locking chain in its own length direction is used to engage in the locking groove, so that the tightness of the locking chain is adjustable;

[0009] The locking structure can move to a first position along the extension direction of the guide structure to open the locking groove, so that any part of the locking chain can be engaged in the locking groove;

[0010] The locking structure can move to a second position along the extension direction of the guide structure under its own gravity to close the locking groove, thereby locking the locking chain.

[0011] By adopting the above technical solution:

[0012] Eliminating the risk of foreign objects: The device adopts a mechanical locking structure, which avoids the risk of tape falling off and generating foreign objects in the spent fuel pool environment, effectively ensuring the safety of fuel assemblies and reducing safety hazards during nuclear power plant operation.

[0013] Improved fixing reliability: The locking chain and locking groove work together to firmly fix the cable. Compared with tape, it will not break or fall off, ensuring the reliability of cable fixing, reducing the occurrence of material handling tool connection failures, and improving the safety and efficiency of material change and overhaul.

[0014] Flexible and convenient operation: The tightness of the locking chain is adjustable, which can be flexibly adjusted according to different specifications of cables and actual working conditions. It has a wide range of applications, and the operation process is simple and intuitive, making it easy for staff to quickly master and use.

[0015] By adopting the above technical solution, one end of the locking structure is provided with the locking groove, and the end of the locking structure opposite to the locking groove is provided with a gravity structure. The gravity structure is located on the side of the first fixing structure opposite to the locking groove, and the gravity structure is used to provide gravity for the locking structure to move to the second position.

[0016] By adopting the above technical solution, the locking groove includes a locking section and a guide section communicating with the locking section. The locking section extends along the sliding direction of the sliding structure, and the guide section is disposed close to the second fixing structure. The cross-sectional diameter of the guide section gradually increases from the end close to the locking section to the end away from the locking section.

[0017] By adopting the above technical solution, the locking chain includes multiple chain units connected in sequence, with two adjacent chain units connected vertically, and the shape and size of the chain units are adapted to the shape and size of the locking section.

[0018] By adopting the above technical solution, the locking chain also includes a soft sleeve fitted onto the chain unit.

[0019] By adopting the above technical solution, the locking chain further includes a locking ring buckle, which is disposed on the end of the locking chain away from the connecting end. The locking ring buckle is detachably connected to the locking chain. When the locking ring buckle is connected to the locking chain, it can limit the soft sleeve. When the locking ring buckle is detached from the locking chain, the soft sleeve can be disengaged from the locking chain.

[0020] By adopting the above technical solution, the second fixing structure has a locking hole located in the sliding direction of the sliding structure, and the part of the locking structure with the locking section can be inserted into the locking hole so that the locking section is in a closed state.

[0021] By adopting the above technical solution, the first fixing structure is provided with a first guide hole, and the locking structure is clearance-fitted with the first guide hole.

[0022] By adopting the above technical solution, the guide structure is provided with a second guide hole, and the guide structure is clearance-fitted with the second guide hole.

[0023] Secondly, a nuclear power plant maintenance device is provided, including a connecting rod and the aforementioned cable locking device, wherein the cable locking device is connected to the connecting rod.

[0024] By adopting the above technical solution, in addition to the advantages of the cable locking device in the above embodiments, the nuclear power plant maintenance equipment in this embodiment also has the advantage of high maintenance safety. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of the cable locking device provided in an embodiment of the present invention, wherein the locking groove is in an open state.

[0027] Figure 2This is a front view of the cable locking device provided in an embodiment of the present invention, wherein the locking groove is in a closed state.

[0028] Figure 3 This is a schematic diagram of the cable locking device provided in this embodiment of the utility model.

[0029] Figure 4 This is a schematic diagram of the locking chain and locking structure provided in an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the locking chain provided in an embodiment of the present invention.

[0031] Figure 6 This is a top view of the second fixed structure provided in this embodiment of the utility model.

[0032] Figure 7 This is a top view of the first fixed structure provided in this embodiment of the utility model.

[0033] Figure 8 This is a top view of the sliding structure provided in an embodiment of this utility model.

[0034] The labels for the attached figures are as follows:

[0035] 1. First fixing structure; 2. Second fixing structure; 3. Guide structure; 4. Sliding structure; 5. Locking structure; 6. Locking chain; 7. Cable; 8. Connecting rod;

[0036] 11. First guide hole; 21. Locking hole; 31. Second guide hole; 51. Locking groove; 52. Gravity structure; 61. Connecting end; 62. Chain unit; 63. Soft sleeve; 64. Locking ring;

[0037] 511. Locking section; 512. Guide section. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0042] like Figures 1 to 3 As shown, an embodiment of this utility model provides a cable locking device, comprising:

[0043] A first fixing structure 1, a second fixing structure 2 arranged parallel to and spaced apart from the first fixing structure 1, a guide structure 3 connecting the first fixing structure 1 and the second fixing structure 2, a sliding structure 4 slidably connected to the guide structure 3, a locking structure 5 fixedly connected to the sliding structure 4, and a locking chain 6 for locking the cable.

[0044] The first fixing structure 1 and the second fixing structure 2 are used to connect with the connecting rod 8 of the fixed cable 7; the guide structure 3 is used to guide the sliding structure 4 to slide along the extension direction of the guide structure 3; the locking structure 5 is provided with a locking groove 51 for locking the locking chain 6; the locking chain 6 is provided with a connecting end 61 for connecting with the connecting rod 8, the locking chain 6 is used to wrap around the connecting rod 8 from the connecting end 61 and fix the cable 7 to the connecting rod 8, any part of the locking chain 6 in its own length direction is used to be inserted into the locking groove 51, so that the tightness of the locking chain 6 is adjustable; the locking structure 5 can move along the extension direction of the guide structure 3 to a first position to open the locking groove 51; the locking structure 5 can move along the extension direction of the guide structure 3 to a second position under its own gravity to close the locking groove 51, so that the locking chain 6 is locked.

[0045] Specifically, the first fixing structure 1 and the second fixing structure 2 are arranged in parallel and spaced apart, serving as the basic connecting components of the entire device. They are used to connect with the connecting rod 8 of the fixing cable 7, providing a stable installation interface and ensuring that the device is firmly connected to the external structure.

[0046] The guide structure 3 connects the first fixed structure 1 and the second fixed structure 2. Its function is to provide a precise sliding track for the sliding structure 4, guide the sliding structure 4 to move along the extension direction of the guide structure 3, and ensure the stability and accuracy of the device operation.

[0047] The sliding structure 4 is slidably connected to the guide structure 3, and can slide freely along the length of the guide structure 3, providing a carrier for the movement of the locking structure 5, and realizing the fixing operation of the locking chain 6 and the cable 7.

[0048] The locking structure 5 is provided with a locking groove 51 for locking the locking chain 6, which is fixedly connected to the sliding structure 4 and can move on the guide structure 3. Its movement state directly determines the opening and closing of the locking groove 51, thereby controlling the fixing and releasing of the cable 7 by the locking chain 6.

[0049] The locking chain 6 has a connecting end 61 that connects to the connecting rod 8, and is a key component for directly fixing the cable 7. By winding around the connecting rod 8 and fixing the cable 7, and by allowing any part of the chain along its length to engage with the locking groove 51, the tightness of the cable 7 can be flexibly adjusted.

[0050] The working principle of the cable locking device provided in this embodiment is as follows:

[0051] Initial preparation: Connect the first fixing structure 1 and the second fixing structure 2 to the connecting rod 8 of the fixing cable 7 to complete the installation and fixing of the device.

[0052] Open the locking groove 51: The locking structure 5 is moved to the first position along the extension direction of the guide structure 3 by external force. At this time, the locking groove 51 is opened, providing space for the operation of the locking chain 6.

[0053] Cable 7 fixing: The locking chain 6 is wound around the connecting rod 8 from the connecting end 61, and the cable 7 is fixed to the connecting rod 8. The tightness of the cable 7 fixing is adjusted according to actual needs, and the appropriate part of the locking chain 6 in its own length direction is inserted into the locking groove 51.

[0054] Closing the locking groove 51: After the external force is released, the locking structure 5 moves to the second position along the extension direction of the guide structure 3 under its own gravity, closing the locking groove 51, thereby locking the locking chain 6 and ensuring that the cable 7 is firmly fixed on the connecting rod 8.

[0055] By adopting the above technical solution:

[0056] Eliminating the risk of foreign objects: The device adopts a mechanical locking structure 5, which avoids the risk of tape falling off and generating foreign objects in the spent pool environment, effectively ensuring the safety of fuel assemblies and reducing safety hazards during the operation of nuclear power plants.

[0057] Improved fixing reliability: The locking chain 6 and the locking groove 51 work together to firmly fix the cable 7. Compared with tape, there will be no problems such as breakage or loose adhesion, ensuring the reliability of cable 7 fixing, reducing the occurrence of material unloading tool connection failures, and improving the safety and efficiency of material change and overhaul.

[0058] Flexible and convenient operation: The tightness of the locking chain 6 is adjustable, which can be flexibly adjusted according to different specifications of cables 7 and actual working conditions. It has a wide range of applications, and the operation process is simple and intuitive, making it easy for staff to quickly master and use.

[0059] In one embodiment, one end of the locking structure 5 is provided with a locking groove 51, and the other end of the locking structure 5 away from the locking groove 51 is provided with a gravity structure 52. The gravity structure 52 is located on the side of the first fixing structure 1 away from the locking groove 51, and the gravity structure 52 is used to provide gravity for the locking structure 5 to move to the second position.

[0060] Specifically, when the cable locking device is fixed to the connecting rod 8 and in operation, the first fixing structure 1 and the second fixing structure 2 are vertically distributed, with the first fixing structure 1 located vertically above the second fixing structure 2. This allows the sliding structure 4 and the locking structure 5 to move from the first position to the second position under their own weight. The locking groove 51 is positioned close to the second fixing structure 2, and the gravity structure 52 is positioned on the side of the locking structure 5 opposite to the locking groove 51, i.e., the gravity structure 52 is located vertically above the locking structure 5. This allows the gravity of the gravity structure 52 to act on the locking structure 5, driving it to move from the first position to the second position.

[0061] Open state: When it is necessary to fix the cable 7, the locking structure 5 is slid to the first position along the extension direction of the guide structure 3 by external force, at which time the locking groove 51 is opened. Although the gravity structure 52 provides gravity, the locking structure 5 can be kept in the first position due to the action of external force, leaving space for subsequent cable 7 fixing operations.

[0062] Fixing process: The operator wraps the locking chain 6 around the connecting rod 8 and the cable 7, adjusts it to the appropriate tension, and then inserts it into the locking groove 51. After the external force is released, due to the gravity of the gravity structure 52, the locking structure 5, using the guide structure 3 as a track, automatically slides to the second position under the combined force of its own gravity and the gravity structure 52, thereby closing the locking groove 51 and firmly locking the locking chain 6, thus completing the fixing of the cable 7.

[0063] Stable maintenance: The gravity structure 52 continuously applies gravity, which keeps the locking structure 5 stable in the second position, preventing the locking groove 51 from being accidentally opened due to factors such as vibration or external pulling, and ensuring the reliability of the cable 7's fixed state.

[0064] By adopting the above technical solution:

[0065] Enhanced reliability of gravity drive: Compared to relying solely on the gravity of the locking structure 5 itself, the addition of gravity structure 52 allows for adjustment of the magnitude and direction of gravity as needed, ensuring that the locking structure 5 can reliably move to the second position and close the locking groove 51 under different working conditions (such as inclined installation or vibration environment), thereby improving the overall stability of the device.

[0066] Simplified operation process: The design of gravity structure 52 makes it possible to close the locking groove 51 without the need for additional external force. After the operator has completed the fixing of cable 7, he only needs to release the control of locking structure 5 to automatically lock it, reducing operation steps and improving work efficiency.

[0067] In one embodiment, the locking groove 51 includes a locking section 511 and a guide section 512 communicating with the locking section 511. The locking section 511 extends along the sliding direction of the sliding structure 4, and the guide section 512 is disposed close to the second fixing structure 2. The cross-sectional diameter of the guide section 512 gradually increases from the end close to the locking section 511 to the end away from the locking section 511.

[0068] Specifically, the locking section 511 extends along the sliding direction of the sliding structure 4 and is the key area for the final fixation of the locking chain 6. Its extension direction is consistent with the movement trajectory of the sliding structure 4, so that when the locking structure 5 moves to the second position to close the locking groove 51, it can apply pressure evenly along the length of the locking chain 6, ensuring that the locking chain 6 and the locking groove 51 are tightly engaged and stably fixed.

[0069] The guide section 512 is located close to the second fixing structure 2 and is gradually widening. This shape design is similar to a "funnel opening", which guides the locking chain 6 into the locking groove 51, reduces the difficulty of operation when the locking chain 6 is engaged, and can adapt to chains of different thicknesses and angles, thus improving the compatibility of the device.

[0070] Locking chain 6 insertion process: When the operator adjusts the tension of the locking chain 6 and prepares to insert it into the locking groove 51, the gradually expanding guide section 512 automatically guides the locking chain 6. Even if there is a certain angular deviation between the locking chain 6 and the locking groove 51, the guide section 512 can use its gradually expanding shape to guide the locking chain 6 smoothly into the groove, reducing the manual alignment steps of the locking chain 6.

[0071] Locking process of locking chain 6: After the locking chain 6 enters the locking section 511 through the guide section 512, as the locking structure 5 slides to the second position under the action of gravity, the locking section 511 applies pressure to the locking chain 6 along the sliding direction of the sliding structure 4. Since the locking section 511 is in the same direction as the sliding direction, the pressure is evenly distributed on the locking chain 6, making the locking chain 6 tightly fixed in the groove and preventing the locking chain 6 from loosening or coming out.

[0072] By adopting the above technical solution:

[0073] Improved ease of operation: The gradually expanding design of the guide section 512 reduces the difficulty for operators to insert the locking chain 6 into the locking groove 51. Especially in confined spaces or working environments with poor visibility, the locking chain 6 can be quickly inserted without precise alignment, improving the efficiency of cable 7 fixation.

[0074] Enhanced stability: The design of the locking section 511 extending along the sliding direction ensures uniform pressure on the locking chain 6 when the locking structure 5 closes the locking groove 51, which can more effectively prevent the locking chain 6 from shifting or loosening under force, and improve the reliability of cable 7 fixation.

[0075] Please refer to the following: Figure 4 In one embodiment, the locking chain 6 includes a plurality of chain units 62 connected in sequence, with adjacent chain units 62 vertically connected, and the shape and size of the chain units 62 are adapted to the shape and size of the locking section 511.

[0076] Specifically, multiple chain units 62 are connected sequentially, with adjacent chain units 62 connected vertically. This connection method gives the locking chain 6 greater flexibility when bending and stretching, allowing it to better conform to the shape of the connecting rod 8 and the cable 7, and adapt to complex fixing environments.

[0077] The shape and size of each chain unit 62 are matched with the shape and size of the locking section 511. This means that the chain unit 62 can be tightly embedded in the locking section 511, and the two fit together like a jigsaw puzzle, ensuring a stable fixing effect after the chain is engaged in the locking groove 51.

[0078] Fitting during the fixing process: When using the locking chain 6 to fix the cable 7, because the chain units 62 are vertically connected, the locking chain 6 can wrap around the connecting rod 8 and the cable 7 at multiple angles, tightly fitting their surfaces. This wrapping method not only evenly distributes the pressure on the cable 7, but also avoids damage to the cable 7 due to excessive local stress.

[0079] Precise fit with locking section 511: The chain unit 62 is sized and shaped to fit the locking section 511. When the chain is engaged in the locking groove 51, the chain unit 62 can be fully embedded in the locking section 511, reducing the gap between the locking chain 6 and the groove wall. When the locking structure 5 moves to close the locking groove 51, the locking section 511 applies uniform and tight pressure to the chain unit 62, like a custom-made lock, preventing the chain unit 62 from sliding or coming out of the groove.

[0080] By adopting the above technical solution:

[0081] Improved stability: The vertically connected chain unit 62 allows the locking chain 6 to flexibly wind around connecting rods 8 and cables 7 of different shapes and sizes. Whether it is a round or square connecting rod 8 or a cable 7 of different thicknesses, it can be firmly fixed, greatly expanding the application range of the device.

[0082] Enhanced stability: The precise fit between chain unit 62 and locking section 511 effectively improves the locking effect. Compared with traditional chains, this design significantly reduces the risk of chain loosening and maintains a firm fixation to cable 7 even when subjected to external forces such as vibration and pulling, further ensuring the safety of cable 7 in scenarios such as refueling and overhaul in nuclear power plants.

[0083] Please refer to the following: Figure 5 In one embodiment, the locking chain 6 further includes a soft sleeve 63 fitted onto the chain unit 62.

[0084] Specifically, the soft sleeve 63 is fitted onto each chain unit 62, tightly wrapping the outer surface of the chain unit 62, and becoming the direct part that locks the chain 6 in contact with the outside.

[0085] The soft sleeve 63 is usually made of flexible and elastic materials such as rubber and silicone. Its soft texture can bring additional functional characteristics to the chain without affecting the flexibility of the chain unit 62.

[0086] When using the locking chain 6 to fix the cable 7, the presence of the soft sleeve 63 prevents rigid contact between the chain, the cable 7, and the connecting rod 8. The soft sleeve 63 cushions the pressure of the locking chain 6 on the surface of the cable 7 and the connecting rod 8, preventing damage to the cable 7 sheath or scratches on the surface of the connecting rod 8 caused by the squeezing and friction of the locking chain 6, effectively protecting the integrity of the fixed object.

[0087] Enhanced stability: The elastic material of the soft sleeve 63 has a certain anti-slip property. When the chain is wrapped around the cable 7 and the connecting rod 8, the soft sleeve 63 fits tightly against the surfaces of the two, increasing the friction and preventing the chain from slipping during the fixing process, thus further improving the stability of the cable 7.

[0088] Reduced wear and noise: The vertical connection between chain units 62 may generate metal friction and noise during operation. The soft sleeve 63 can isolate adjacent chain units 62, reduce direct contact between metals, thereby reducing the wear of the chain itself, and effectively suppressing the noise generated during operation.

[0089] In one embodiment, the locking chain 6 further includes a locking ring 64, which is disposed on the end of the locking chain 6 away from the connecting end 61. The locking ring 64 is detachably connected to the locking chain 6. When the locking ring 64 is connected to the locking chain 6, it can limit the soft sleeve 63. When the locking ring 64 is detached from the locking chain 6, the soft sleeve 63 can be disengaged from the locking chain 6.

[0090] Specifically, the locking ring 64 is located at the end of the locking chain 6 away from the connecting end 61, and is connected to the locking chain 6 using a detachable connection method (such as a snap-fit ​​or threaded connection). This design allows the ring to be installed or removed as needed, flexibly adjusting the chain structure.

[0091] When the locking ring 64 is connected to the locking chain 6, its inner structure can hold the end of the soft sleeve 63, restricting the soft sleeve 63 from sliding along the axial direction of the locking chain 6; and when the locking ring 64 is removed from the locking chain 6, the soft sleeve 63 loses its end constraint and can be pulled out from the chain unit 62 as a whole, achieving quick separation.

[0092] By adopting the above technical solution, the reliability of the soft sleeve 63 is improved: the locking ring 64 limits the movement of the soft sleeve 63 during the fixing of the cable 7, ensuring that the soft sleeve 63 continues to play its buffering, anti-slip and noise reduction functions, and enhancing the safety and stability of the cable 7 fixing.

[0093] Enhanced structural flexibility: The detachable connection between the locking ring 64 and the chain allows the chain to be flexibly adjusted according to actual needs. In scenarios where the soft sleeve 63 is not required, the ring and soft sleeve 63 can be directly removed, retaining the basic chain structure and expanding the application scenarios of the device.

[0094] Please refer to the following: Figure 6 In one embodiment, the second fixing structure 2 has a locking hole 21 located in the sliding direction of the sliding structure 4, and the part of the locking structure 5 with the locking section 511 can be inserted into the locking hole 21 so that the locking section 511 is in a closed state.

[0095] Specifically, the locking hole 21 is formed on the second fixing structure 2 and is located in the sliding direction of the sliding structure 4. Its shape and size are adapted to the part of the locking structure 5 with the locking section 511, so that the part of the locking structure 5 with the locking section 511 can be accurately inserted. This design ensures that after the locking section 511 is inserted, it fits tightly with the second fixing structure 2 to form a stable connection.

[0096] When the locking structure 5 slides along the guide structure 3 to the second position, the locking section 511 can be inserted into the locking hole 21. At this time, the locking section 511 not only closes the locking groove 51 by its own gravity, but also further restricts the movement of the locking structure 5 by cooperating with the locking hole 21, thereby enhancing the fixing effect on the locking chain 6.

[0097] By adopting the above technical solution:

[0098] Enhanced stability: The mechanical cooperation between the locking section 511 and the locking hole 21 provides an additional locking point for the locking chain 6. Compared with the method of relying solely on gravity to close the locking groove 51, it can effectively resist greater external pulling and vibration, prevent the chain from loosening, and improve the safety of the cable 7 fixation. It is especially suitable for high-requirement scenarios such as nuclear power plants.

[0099] To prevent the risk of misoperation: The process of inserting the locking section 511 into the locking hole 21 requires the locking structure 5 to slide accurately to the second position, forming a "position verification" mechanism. If the locking structure 5 is not fully in place, the locking section 511 cannot be inserted into the locking hole 21, which can promptly remind the operator to check the operation procedure and reduce the risk of the cable 7 being not securely fixed due to operational errors.

[0100] Please refer to the following: Figure 7 In one embodiment, the first fixing structure 1 has a first guide hole 11, and the locking structure 5 is clearance-fitted with the first guide hole 11.

[0101] Specifically, the position and function of the first guide hole 11: The first guide hole 11 is formed on the first fixed structure 1, and its main function is to provide guidance and support for the movement of the locking structure 5. As an important constraint component on the movement trajectory of the locking structure 5, the first guide hole 11 can ensure that the locking structure 5 slides smoothly along the preset direction and avoids deviation or shaking.

[0102] The significance of clearance fit: The locking structure 5 and the first guide hole 11 adopt a clearance fit, that is, there is a small gap between them. This fit allows the locking structure 5 to slide freely in the guide hole, ensuring the motion flexibility required for its normal operation, while also limiting the radial movement range of the locking structure 5 by reasonably controlling the size of the gap, preventing excessive offset during sliding.

[0103] By adopting the above technical solution:

[0104] Improved motion accuracy and stability: The clearance fit between the first guide hole 11 and the locking structure 5 provides precise guidance for the sliding of the locking structure 5. Compared with structures without guide holes or without clearance fit, it can effectively reduce the shaking and offset of the locking structure 5 during the movement, so that the locking structure 5 can reach the preset position more accurately, thereby improving the accuracy and reliability of the cable 7 fixing operation.

[0105] Please refer to the following: Figure 8 In one embodiment, the guide structure 3 has a second guide hole 31, and the guide structure 3 and the second guide hole 31 are in clearance fit.

[0106] Specifically, the second guide hole 31 is formed on the guide structure 3 to provide guidance for the movement of the sliding structure 4 and the locking structure 5. As a key constraint component for the movement trajectory of the device, the second guide hole 31 can accurately guide the sliding structure 4 to move in a predetermined direction, preventing it from deviating or swaying during movement.

[0107] By adopting the above technical solution:

[0108] Improved motion accuracy: The clearance fit between the second guide hole 31 and the guide structure 3 effectively reduces the shaking and offset of the sliding structure 4 during the movement, allowing the locking structure 5 to reach the predetermined position more accurately, and significantly improving the accuracy and reliability of the cable 7 fixing operation.

[0109] Secondly, a nuclear power plant maintenance device is provided, including a connecting rod 8 and the aforementioned cable locking device, wherein the cable locking device is connected to the connecting rod 8.

[0110] By adopting the above technical solution, in addition to the advantages of the cable locking device in the above embodiments, the nuclear power plant maintenance equipment in this embodiment also has the advantage of high maintenance safety.

[0111] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable locking device, characterized in that, include: A first fixing structure, a second fixing structure arranged parallel to and spaced apart from the first fixing structure, a guide structure connecting the first fixing structure and the second fixing structure, a sliding structure slidably connected to the guide structure, a locking structure fixedly connected to the sliding structure, and a locking chain for locking the cable; The first fixing structure and the second fixing structure are used to connect with the connecting rod of the fixed cable; the guide structure is used to guide the sliding structure to slide along the extension direction of the guide structure; the locking structure is provided with a locking groove for locking the locking chain; the locking chain is provided with a connecting end for connecting with the connecting rod, the locking chain is used to wrap around the connecting rod from the connecting end and fix the cable to the connecting rod, and any part of the locking chain in its own length direction is used to engage in the locking groove, so that the tightness of the locking chain is adjustable; The locking structure can move to a first position along the extension direction of the guide structure to open the locking groove, so that any part of the locking chain can be engaged in the locking groove; The locking structure can move to a second position along the extension direction of the guide structure under its own gravity to close the locking groove, thereby locking the locking chain.

2. The cable locking device as described in claim 1, characterized in that, One end of the locking structure is provided with the locking groove, and the end of the locking structure opposite to the locking groove is provided with a gravity structure. The gravity structure is located on the side of the first fixing structure opposite to the locking groove, and the gravity structure is used to provide gravity for the locking structure to move to the second position.

3. The cable locking device as described in claim 1, characterized in that, The locking groove includes a locking section and a guide section communicating with the locking section. The locking section extends along the sliding direction of the sliding structure. The guide section is located close to the second fixing structure, and the cross-sectional diameter of the guide section gradually increases from the end closer to the locking section to the end farther away from the locking section.

4. The cable locking device as described in claim 3, characterized in that, The locking chain includes multiple chain units connected in sequence, with adjacent chain units connected vertically, and the shape and size of the chain units are adapted to the shape and size of the locking segment.

5. The cable locking device as described in claim 4, characterized in that, The locking chain also includes a soft sleeve fitted onto the chain unit.

6. The cable locking device as described in claim 5, characterized in that, The locking chain also includes a locking ring, which is located on the end of the locking chain away from the connecting end. The locking ring is detachably connected to the locking chain. When the locking ring is connected to the locking chain, it can limit the soft sleeve. When the locking ring is detached from the locking chain, the soft sleeve can be disengaged from the locking chain.

7. The cable locking device as described in claim 3, characterized in that, The second fixing structure has a locking hole located in the sliding direction of the sliding structure. The part of the locking structure with the locking section can be inserted into the locking hole, so that the locking section is in a closed state.

8. The cable locking device according to any one of claims 1 to 7, characterized in that, The first fixing structure has a first guide hole, and the locking structure is clearance-fitted with the first guide hole.

9. The cable locking device according to any one of claims 1 to 7, characterized in that, The guide structure has a second guide hole, and the guide structure is clearance-fitted with the second guide hole.

10. A nuclear power plant maintenance equipment, characterized in that, It includes a connecting rod and a cable locking device as described in any one of claims 1 to 9, wherein the cable locking device is connected to the connecting rod.

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