A chain link and a chain

Abstract

The utility model discloses a kind of lock chain shackle and lock chain, including first connecting component, prevent shedding limiting mechanism and second connecting component;The first connecting component and second connecting component are aligned with cooperation and are connected by magnetic attraction effect;Prevent shedding limiting mechanism is equipped on the first connecting component;The prevent shedding limiting mechanism is used to prevent the first connecting component and second connecting component from accidentally falling off after being connected.The utility model of a kind of lock chain shackle and lock chain solves the problem that traditional shackle is aligned complicated, realizes the quick connection and disconnection of lock chain, and is aligned efficient, convenient to operate, fixed reliable and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of lock and chain technology, specifically a lock and chain buckle and a chain. Background Technology

[0002] In the energy and power industry, hydroelectric generator sets are core equipment for clean energy production, and their safe operation and maintenance are directly related to the stable supply of power systems and the safety of personnel. Critical equipment areas such as the governor, cylindrical valve return tank, and runner chamber are typical hazardous work areas due to the presence of high-speed rotating parts, high-pressure oil circuits, and electrical components. To prevent unauthorized personnel from accidentally entering and causing mechanical injuries, hydraulic leaks, electric shocks, and other safety accidents, the industry commonly uses anti-entry chains in conjunction with guardrails to form physical isolation barriers. The chain buckles, as the core components for connecting and disconnecting the chain, directly determine the reliability and ease of maintenance of the isolation facilities, and are a key detail in ensuring the implementation of the safety management system.

[0003] Currently, anti-intrusion chains in the hydro-generator field commonly use push-button spring hooks as buckles. These products have long dominated the market due to their simple structure and low manufacturing cost. Their core structure consists of a metal hook body and an elastic spring plate. One end of the spring plate is fixedly connected to the hook body, while the other end extends naturally to the hook opening. The hook opening is closed by spring tension. During operation, the spring plate must be manually pressed to overcome the tension and open the hook opening, while simultaneously using the other hand to slip the chain loop onto the hook body. Releasing the spring plate completes the closure and fixation. However, in actual operation and maintenance scenarios, many unavoidable defects have been exposed, and they are gradually failing to meet the demands for efficient and safe operation and maintenance. During inspections, maintenance, and repairs, operations and maintenance personnel often need to carry tools such as notebooks, flashlights, and wrenches. When using push-button spring hooks, the small opening of the hook body makes them difficult to operate. Personnel must first put down the tools to free up both hands to operate, or attempt the more difficult one-handed operation, causing work interruptions and significantly reducing work efficiency. At the same time, wearing protective gloves further increases the difficulty of alignment and makes the operation time-consuming. The cumbersome operation can easily lead to a series of safety hazards. Some staff members may directly step over the chain to save time, causing the chain to break under stress and increasing the cost of equipment replacement. After temporary unlocking, the re-fastening procedure is complicated, and staff members often neglect the reset operation, causing the safe area to lose effective isolation and creating risk conditions for unauthorized personnel to enter.

[0004] In summary, existing push-button spring hook heads suffer from problems such as difficulty in alignment, cumbersome operation, and insufficient reliability. There is an urgent need for a new type of chain hook head that combines efficient alignment, convenient operation, and reliable fixing characteristics to solve the pain points in current operation and maintenance work and improve the safety isolation level of critical areas of hydro-generators. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings by providing a chain buckle and chain, solving the problem of cumbersome alignment of traditional buckles, achieving rapid connection and disconnection of the chain, and offering efficient alignment, convenient operation, reliable fixation, and strong adaptability. To achieve the above objectives, this utility model provides the following technical solution: A chain buckle includes a first connecting component, an anti-detachment limiting mechanism, and a second connecting component; the first connecting component and the second connecting component are aligned and connected by magnetic attraction; the first connecting component is provided with an anti-detachment limiting mechanism; the anti-detachment limiting mechanism is used to prevent the first connecting component from accidentally falling off after it is connected to the second connecting component.

[0006] Furthermore, the first connecting component includes a first connecting block and a first magnetic block; the first connecting block is provided with a fastening groove facing the second connecting component; the bottom of the fastening groove is provided with a first magnetic block.

[0007] Furthermore, the second connecting component includes a second connecting block and a second magnetic block; the second connecting block has a second magnetic block at one end facing the first connecting block; the second connecting block is inserted into the buckle groove, so that the first magnetic block and the second magnetic block cooperate to automatically align and connect.

[0008] Furthermore, the anti-detachment limiting mechanism includes a pressing rod, a limiting block, and an elastic element; through holes are respectively opened on the side wall corresponding to the buckle groove; a slidable pressing rod is provided on the through hole; a limiting block is provided at one end of the pressing rod located in the buckle groove; the two limiting blocks are connected by the elastic element.

[0009] Furthermore, the second connecting block is provided with a limiting groove; the opening of the limiting groove is provided with a limiting inner edge extending inward; the side wall of the limiting groove is provided with an elongated hole at the position corresponding to the through hole; one end of the elongated hole passes through the end of the second connecting block facing the first connecting block and the position corresponding to the limiting inner edge, and cooperates with the pressing rod.

[0010] Furthermore, a pressing block is provided at the other end of the pressing rod.

[0011] Furthermore, the elastic element is a spring.

[0012] Furthermore, the first magnetic block and the second magnetic block are permanent magnets with opposite polarities.

[0013] Furthermore, the first connecting component and the second connecting component are respectively provided with connecting parts that connect to the chain body at their ends that are far apart from each other; the connecting parts are ring-shaped.

[0014] A chain includes a chain body and the chain buckle mentioned above; the first connecting component and the second connecting component are respectively connected to both ends of the chain body via connectors.

[0015] The beneficial effects of this utility model are: This utility model discloses a chain buckle and chain, including a first connecting component, an anti-detachment limiting mechanism, and a second connecting component. The first and second connecting components are aligned and connected by magnetic attraction. The first connecting component is provided with an anti-detachment limiting mechanism to prevent accidental detachment after the first and second connecting components are connected. This chain buckle and chain solves the problem of cumbersome alignment of traditional buckles, realizes quick connection and disconnection of the chain, and features efficient alignment, convenient operation, reliable fixation, and strong adaptability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the chain buckle of this utility model; Figure 2 This is a schematic diagram of the internal structure of the first connecting component and the second connecting component of this utility model when they are engaged. Figure 3 This is a three-dimensional structural diagram of the first connecting component and the anti-detachment limiting mechanism of this utility model; Figure 4 This is a three-dimensional structural diagram of the first connecting component of this utility model; Figure 5 This is a three-dimensional structural diagram of the anti-detachment limiting mechanism of this utility model; Figure 6 This is a three-dimensional structural diagram of the second connecting component of this utility model; In the attached diagram: 1-First connecting component, 11-First connecting block, 12-Snap groove, 13-First magnetic block, 2-Second connecting component, 21-Second connecting block, 22-Second magnetic block, 3-Anti-detachment limiting mechanism, 31-Pressing rod, 32-Limiting block, 33-Elastic element, 34-Through hole, 35-Pressing block, 36-Limiting groove, 37-Limiting inner edge, 38-Elongated hole, 4-Connecting component. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0018] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0019] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0020] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. The meaning of such spatial relative terms includes different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0021] Example 1: See attached Figures 1-6 A chain buckle includes a first connecting component 1, an anti-detachment limiting mechanism 3, and a second connecting component 2. The first connecting component 1 includes a first connecting block 11 and a first magnetic block 13, as shown in the attached figure. Figure 1 and attached Figure 4As shown, the first connecting block 11 can be cylindrical, and a fastening groove 12 is provided inside the first connecting block 11. The opening of the fastening groove 12 faces the second connecting assembly 2. A first magnetic block 13 is provided at the bottom of the fastening groove 12. The first magnetic block 13 can be provided in two parts, which are partially arc-shaped. The second connecting assembly 2 includes a second connecting block 21 and a second magnetic block 22, as shown in the attached figure. Figure 1 and attached Figure 6 As shown, the size of the second connecting block 21 should be smaller than the size of the slot 12. A second magnetic block 22 is provided at the end of the second connecting block 21 facing the second magnetic block 22. The first magnetic block 13 and the second magnetic block 22 are permanent magnets with opposite polarities. Two second magnetic blocks 22 can also be provided, corresponding one-to-one with the first magnetic block 13. When the first connecting component 1 and the second connecting component 2 are connected, simply inserting the second connecting component 2 into the slot 12 of the first connecting block 11, the first magnetic block 13 and the second magnetic block 22 automatically align and pull the first connecting block 11 and the second connecting block 21 closer together and connect under the action of magnetic attraction. An anti-detachment limiting mechanism 3 is also provided on the first connecting block 11. When the first magnetic block 13 and the second magnetic block 22 accidentally separate under external force, the anti-detachment limiting mechanism 3 can restrict the second connecting block 21 in the slot 12, preventing the first connecting block 11 and the second connecting block 21 from separating, further strengthening the connection between the first connecting block 11 and the second connecting block 21. The chain buckle of this utility model combines with a magnetic block by inserting into the buckle groove 12, which realizes the quick connection and alignment of the chain, high efficiency and convenient operation. In addition, it is further reinforced by the anti-detachment limiting mechanism 3, with double locking protection, making the chain buckle connection more fixed and reliable.

[0022] Specifically, the anti-detachment limiting mechanism 3 includes a pressing rod 31, a limiting block 32, an elastic element 33, and a pressing block 35, as shown in the attached diagram. Figure 5 As shown in the attached document. Figure 3 and attached Figure 4As shown, two through holes 34 are provided on the side wall of the buckle groove 12. The two through holes 34 are arranged symmetrically about the axis. The position of the through holes 34 projected into the bottom of the buckle groove 12 is located at the gap between the two first magnetic blocks 13. A pressing rod 31 that can move along the through holes 34 is provided on the through holes 34. The pressing rod 31 passes through the through holes 34 and is located inside the buckle groove 12, and is located outside the first connecting block 11. A limiting block 32 is provided at one end of the pressing rod 31 inside the buckle groove 12. The two limiting blocks 32 are connected by an elastic element 33, which is a spring. A pressing block 35 is provided at the other end of the pressing rod 31 to facilitate the worker to press. The worker presses the pressing blocks 35 on both sides to make the two limiting blocks 32 in the buckle groove 12 approach each other and contact each other. When released, the two limiting blocks 32 move away from each other. A limiting groove 36 is provided on the second connecting block 21. The opening of the limiting groove 36 is provided with an inwardly extending limiting inner edge 37. The second magnetic block 22 can be set on the limiting inner edge 37 to correspond with the first magnetic block 13. The size of the opening around the limiting inner edge 37 should be larger than the size when the two limiting blocks 32 are in contact. The operator presses the pressing block 35 to make the two limiting blocks 32 contact and inserts the second connecting block 21 into the buckle groove 12. The two limiting blocks 32 can enter the buckle groove 12 through the opening around the inner edge, so that the second connecting block 21 can be smoothly inserted into the buckle groove 12. After the first magnetic block 13 and the second magnetic block 22 are magnetically connected, the pressing block 35 is released and the two limiting blocks 32 move away and reset. If the first magnetic block 13 and the second magnetic block 22 accidentally fall off, the limiting inner edge 37 blocks the limiting block 32, which can restrict the second connection in the buckle groove 12 and prevent the first connecting block 11 and the second connecting block 21 from separating.

[0023] Example 2: A chain includes a chain body and a chain buckle. A ring-shaped connector 4 is provided at the end of the first connecting block 11 furthest from the second connecting component 2, connecting it to one end of the chain body. Similarly, a ring-shaped connector 4 is provided at the end of the second connecting block 21 furthest from the first connecting component 1, connecting it to the other end of the chain body. When the chain is used in conjunction with a guardrail to form a physical barrier, the worker presses the pressing block 35 to bring the two limiting blocks 32 into contact, inserting the second connecting block 21 into the buckle groove 12. The two limiting blocks 32 can enter the buckle groove 12 through their inner edges. The first magnetic block 13 and the second magnetic block 22 automatically align and pull the first connecting block 11 and the second connecting block 21 closer together and connect. Releasing the pressing block 35 causes the two limiting blocks 32 to move away and reset, completing the locking process. When it is necessary to unlock the chain, press the pressing block 35 to make the two limiting blocks 32 contact each other, and pull the second connecting block 21 outwards towards the buckle groove 12 with a little force so that the two limiting blocks 32 can be disconnected by passing through the inner edge.

[0024] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

[0025] The above embodiments are preferred implementations of this utility model. In addition, other implementations are also included. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A chain buckle, characterized in that: It includes a first connecting component (1), an anti-detachment limiting mechanism (3), and a second connecting component (2); the first connecting component (1) and the second connecting component (2) are aligned and connected by magnetic attraction; the first connecting component (1) is provided with an anti-detachment limiting mechanism (3); the anti-detachment limiting mechanism (3) is used to prevent the first connecting component (1) from accidentally falling off after it is connected to the second connecting component (2); the first connecting component (1) includes a first connecting block (11) and a first magnetic block (13); the first connecting block (11) is provided with a groove (12) facing the second connecting component (2); the bottom of the groove (12) is provided with a first magnetic block (13); the second connecting component (2) includes a second connecting block (11) 21) and the second magnetic block (22); the second connecting block (21) is provided with a second magnetic block (22) at one end facing the first connecting block (11); the second connecting block (21) is inserted into the buckle groove (12) so that the first magnetic block (13) and the second magnetic block (22) cooperate, automatically align and connect; the anti-detachment limiting mechanism (3) includes a pressing rod (31), a limiting block (32) and an elastic element (33); the side wall corresponding to the buckle groove (12) is provided with a through hole (34); the through hole (34) is provided with a sliding pressing rod (31); the end of the pressing rod (31) located in the buckle groove (12) is provided with a limiting block (32); the two limiting blocks (32) are connected by the elastic element (33).

2. The chain buckle according to claim 1, characterized in that: The second connecting block (21) is provided with a limiting groove (36); the opening of the limiting groove (36) is provided with a limiting inner edge (37) extending inward; the side wall of the limiting groove (36) is provided with an elongated hole (38) at the position corresponding to the through hole (34); one end of the elongated hole (38) passes through the end of the second connecting block (21) facing the first connecting block (11) and the position corresponding to the limiting inner edge (37), and cooperates with the pressing rod (31).

3. The chain buckle according to claim 1, characterized in that: The other end of the pressing rod (31) is provided with a pressing block (35).

4. The chain buckle according to claim 1, characterized in that: The elastic element (33) is a spring.

5. The chain buckle according to claim 1, characterized in that: The first magnetic block (13) and the second magnetic block (22) are permanent magnets with opposite polarities.

6. The chain buckle according to any one of claims 1 to 5, characterized in that: The first connecting component (1) and the second connecting component (2) are respectively provided with connecting parts (4) that are connected to the chain body at their ends that are far apart from each other; the connecting parts (4) are ring structures.

7. A chain, characterized in that: It includes a chain body and a chain buckle as described in claim 6; the first connecting component (1) and the second connecting component (2) are respectively connected to both ends of the chain body via connectors (4).

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