A cable quick connector for ring main unit

Abstract

The utility model discloses a cable quick joint for ring net box relates to ring net box accessory field, aims at solving the problem of the operation process of prior art is complicated, and the adaptability of multiple groups of cable is insufficient. It includes the copper plate fixed in the ring net box, and the upper cam plate of several electric cables is equipped in the copper plate one side, and the fixed assembly and drive assembly are equipped below the upper cam plate;Fixed assembly contains lower cam plate, connecting arm with bevel, support and wedge, and the support has fixed hoop on the top, and the sliding slot with top spring is equipped between the support and connecting arm;Drive assembly contains first guide rail, lead screw, mounting seat, hexagonal butt joint block, hexagonal sleeve, hand wheel, sliding seat and second guide rail with guide rod. Through drive assembly and drive support movement, wedge and bevel cooperate and realize cable clamping, fixed hoop auxiliary fixing, adapt to multiple groups of cable quick connection and disassembly, improve operation efficiency and connection stability.

Description

Technical Field

[0001] This utility model relates to the technical field of ring network box accessories, and in particular to a quick cable connector for ring network boxes. Background Technology

[0002] In ring main units (RMS) applications, ensuring reliable connections between cables and internal electrical components is crucial. Traditional cable connections often rely on screw fastening, which reveals numerous drawbacks in practice. During frequent cable maintenance or replacement, screws are prone to stripping, leading to loose connections, poor contact, and severely impacting power transmission stability. For instance, in some outdoor RMS units, environmental factors cause screws to rust, further increasing stripping rates and significantly raising maintenance costs and the risk of power outages.

[0003] Existing technologies, such as the quick-connect cable connector for ring main units disclosed in CN222826825U, have improved upon the shortcomings of traditional connection methods to some extent. This technology utilizes a support bracket inside the ring main unit, with a locking assembly at the top working in conjunction with a copper plate, cable post, and ring-shaped cable connector on one side. The locking assembly consists of a sliding base, a snap-fit ​​rod, and a locking lever. The ring-shaped cable connector engages with the locking assembly, effectively preventing screw stripping. Even under strong vibrations or prolonged use, the cable connector remains stably pressed, preventing loosening due to external forces and significantly improving the convenience of installation and disassembly. However, with the development of the power industry, higher demands are placed on the efficiency, stability, and adaptability of ring main unit cable connections. For example, in ring main units of some large power hubs, multiple cable sets need to be connected simultaneously, requiring connection and disassembly operations to be completed within a short time. Existing technologies still suffer from problems such as insufficiently simple operation procedures and inadequate adaptability to multiple cable connections when dealing with such complex scenarios, necessitating further optimization and innovation. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a quick-connect cable connector for ring network boxes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-connect cable connector for a ring main unit includes a copper plate fixed inside the ring main unit. Several upper arc clamps are equidistantly arranged on one side of the copper plate, and each upper arc clamp is electrically connected to a cable. A fixing component for fixing the connected cable is provided below each upper arc clamp. The fixing component includes a lower arc clamp located below the upper arc clamp. A connecting arm is provided at the bottom of the lower arc clamp. A bracket is provided at the tail end of the connecting arm. A bevel is provided at the lower corner of the connecting arm. A wedge block slides against the bottom of the bevel and is fixed to the side wall of the copper plate. A driving component for moving the lower arc clamp is provided at the bottom of the bracket.

[0007] The above technical solution utilizes a fixing assembly consisting of a lower arc clamp, connecting arm, bracket, and wedge block. Under the action of the driving assembly, the wedge block and the inclined groove generate an upward clamping force, enabling the cable to be quickly fixed and electrically connected to the upper arc clamp. Compared with the traditional bolt fixing method, this significantly shortens the connection time.

[0008] Preferably, the drive assembly includes a first guide rail slidably disposed at the bottom of the bracket, a lead screw threadedly inserted into the lower part of the bracket, a mounting seat rotatably sleeved at one end of the lead screw, a hexagonal mating block coaxially disposed at the end of the lead screw, a hexagonal sleeve slidably sleeved on the hexagonal mating block, a handwheel coaxially disposed at the end of the hexagonal sleeve, and a slide seat rotatably sleeved on the hexagonal sleeve.

[0009] The above technical solution involves a drive assembly consisting of a first guide rail, a lead screw, a mounting base, a hexagonal mating block, a hexagonal sleeve, a handwheel, and a slide. By rotating the handwheel, the lead screw is driven to rotate, converting the rotational motion into the linear motion of the support. This allows for precise control of the movement distance and clamping force of the lower arc clamp, ensuring a stable and reliable cable connection.

[0010] Preferably, a second guide rail is slidably inserted into the bottom of the slide block.

[0011] The above technical solution involves a second guide rail that slides into the bottom of the slide block, allowing the drive assembly to move left and right along the guide rail. This adapts to the connection requirements of multiple cable sets within the ring network box, enabling a single drive assembly to operate cable connectors at different locations, reducing equipment costs and improving operational efficiency.

[0012] Furthermore, guide rods are longitudinally slidably inserted at both ends of the second guide rail.

[0013] Through the above technical solution: the guide rods that are longitudinally slidably inserted at both ends of the second guide rail provide guidance for the longitudinal movement of the slide block, ensuring precise alignment of the two when controlling the engagement or disengagement of the hexagonal sleeve and the hexagonal mating block, avoiding offset or jamming, and ensuring the stability and reliability of the clutch action of the drive component.

[0014] Furthermore, the top of the bracket is equipped with a fixing clamp for securing the cable sheath surface.

[0015] Through the above technical solutions, the fixing clamp at the top of the bracket fixes the cable sheath after the cable conductor is clamped by the upper and lower arc clamps, forming a mechanical double fixing structure. This prevents the cable from axial movement or radial rotation due to vibration, pulling and other factors during use, and further improves the stability of the cable connection.

[0016] Preferably, a groove is provided at the connection position between the bracket and the connecting arm, and a top spring for resetting the connecting arm is provided inside the groove.

[0017] Through the above technical solution: the top spring installed in the groove at the connection position of the bracket and the connecting arm, when the bracket moves away from the copper plate during cable disassembly, the force of the wedge block on the connecting arm disappears, and the top spring automatically pushes the connecting arm to rotate downward, causing the lower arc clamp to reset. No manual operation is required, simplifying the disassembly process and achieving rapid disassembly.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. By using a handwheel-driven lead screw, wedge block and inclined bevel mechanical structure, the complex operation of tightening bolts one by one is simplified to one-handed rotation of the handwheel, and the clamping and electrical connection of a single set of cables can be completed within 30 seconds; at the same time, the combination of the second guide rail and guide rod realizes the rapid switching of drive components, which can efficiently flow between multiple sets of cables. Compared with the traditional method, the overall work efficiency is improved by more than 50%.

[0020] 2. The double fixing design of "upper and lower arc clamps clamping the conductor + fixing clamps locking the outer sheath" not only ensures a low-resistance electrical connection between the cable and the copper plate, but also effectively resists the influence of external forces such as vibration and pulling during long-term operation, prevents the cable from loosening or poor contact, and ensures the stability and safety of power transmission in the ring network box.

[0021] 3. A set of drive components can move laterally via the second guide rail and the clutch can be controlled by the guide rod, adapting to multiple sets of cable joints. There is no need to configure a separate drive device for each set of joints, reducing the number of components and space occupation inside the ring network box. At the same time, the standardized structure facilitates later maintenance and replacement of components, significantly reducing equipment costs and maintenance difficulty.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a quick-connect cable connector for a ring main unit proposed in this utility model;

[0024] Figure 2 This is a side view of the structure of a quick-connect cable connector for a ring main unit proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the drive assembly structure of a cable quick connector for a ring main unit proposed in this utility model;

[0026] Figure 4 This utility model proposes a quick-connect cable for a ring main unit. Figure 2A magnified schematic diagram of the local structure at point A;

[0027] Figure 5 This utility model proposes a quick-connect cable for a ring main unit. Figure 3 A magnified schematic diagram of the local structure at point B.

[0028] In the diagram: 1. Copper plate; 2. Upper arc clamp; 3. Lower arc clamp; 4. Connecting arm; 5. Bracket; 6. Fixing clamp; 7. Wedge block; 8. First guide rail; 9. Lead screw; 10. Mounting seat; 11. Hexagonal mating block; 12. Hexagonal sleeve; 13. Slide seat; 14. Handwheel; 15. Second guide rail; 16. Guide rod; 41. Inclined bevel; 51. Slide groove; 52. Top spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example 1, referring to Figures 1 to 5 A quick cable connector for a ring main unit includes a copper plate 1 fixed inside the ring main unit. Several upper arc clamps 2 are equidistantly arranged on one side of the copper plate 1. Each upper arc clamp 2 is electrically connected to a cable. A fixing component for fixing the connecting cable is provided below each upper arc clamp 2. The fixing component includes a lower arc clamp 3 located below the upper arc clamp 2. A connecting arm 4 is provided at the bottom of the lower arc clamp 3. A bracket 5 is provided at the tail end of the connecting arm 4. A ramp 41 is provided at the lower corner of the connecting arm 4. A wedge block 7 slides against the bottom of the ramp 41. The wedge block 7 is fixed to the side wall of the copper plate 1. A driving component for driving the lower arc clamp 3 to move is provided at the bottom of the bracket 5.

[0031] In this embodiment, the drive assembly includes a first guide rail 8 slidably disposed at the bottom of the bracket 5, a lead screw 9 threadedly inserted into the lower part of the bracket 5, a mounting seat 10 rotatably sleeved at one end of the lead screw 9, a hexagonal mating block 11 coaxially disposed at the end of the lead screw 9, a hexagonal sleeve 12 slidably sleeved at the hexagonal mating block 11, a handwheel 14 coaxially disposed at the end of the hexagonal sleeve 12, a slide block 13 rotatably sleeved at the end of the hexagonal sleeve 12, a second guide rail 15 slidably inserted into the bottom of the slide block 13, guide rods 16 slidably inserted into both ends of the second guide rail 15, a fixing clamp 6 for fixing the outer surface of the cable sheath at the top of the bracket 5, a groove 51 is opened at the connection position between the bracket 5 and the connecting arm 4, and a top spring 52 for resetting the connecting arm 4 is provided inside the groove 51.

[0032] The working principle of this embodiment is as follows: When the cable quick connector 1 of the ring network box is in operation, the outer sheath of the cable is first placed into the fixing clamp 6 at the top of the bracket 5 for initial fixation, so that the cable conductor is aligned with the upper arc clamp 2. Pushing the handwheel 14 drives the slide 13 to slide left and right along the second guide rail 15, aligning the hexagonal sleeve 12 on the slide 13 with the axis of the hexagonal docking block 11 of the target bracket 5. Then, the slide 13 is pushed longitudinally along the guide rod 16, so that the hexagonal sleeve 12 fits onto the docking block 11 to achieve power connection. Rotating the handwheel 14 causes the hexagonal sleeve 12 to rotate the hexagonal mating block 11 and the lead screw 9. Because the lead screw 9 is threaded into the bracket 5 and fixed by the mounting base 10, the bracket 5 moves laterally along the first guide rail 8 towards the copper plate 1. The lower inclined slot 41 of the connecting arm 4 slides along the inclined surface of the wedge block 7. The vertical component force generated by the wedge block 7 causes the connecting arm 4 to rotate upwards around its connection point with the bracket 5, pushing the lower arc clamp 3 towards the upper arc clamp 2 to clamp the cable conductor. Simultaneously, the upper arc clamp 2 is electrically connected to the copper plate 1 to achieve current conduction. After clamping, the locking clamp 6 is closed, forming a secondary fixation of the cable sheath to prevent axial movement and radial rotation of the cable. During disassembly, turn the handwheel 14 in the opposite direction, and the bracket 5 moves away from the copper plate 1. At the same time, the top spring 52 in the slide groove 51 pushes the connecting arm 4 to rotate downward, and the lower arc clamp 3 moves away from the upper arc clamp 2, releasing the clamping state. The fixing clamp 6 can then be opened to remove the cable. If it is necessary to switch to other cable groups, pull the slide block 13 along the guide rod 16 to separate the sleeve 12 from the docking block 11, and then move the drive unit to the new target group through the second guide rail 15 to repeat the operation.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick-connect cable connector for a ring main unit, comprising a copper plate (1) fixed inside the ring main unit, wherein a plurality of upper arc clamps (2) are equidistantly arranged on one side of the copper plate (1), and each upper arc clamp (2) is electrically connected to a cable, characterized in that, The upper arc clamp (2) is provided with a fixing component for fixing the connecting cable below. The fixing component includes a lower arc clamp (3) located below the upper arc clamp (2). The lower arc clamp (3) is provided with a connecting arm (4) at the bottom. The connecting arm (4) is provided with a bracket (5) at the tail end. The lower corner of the connecting arm (4) is provided with a ramp (41). The bottom of the ramp (41) slides against a wedge block (7). The wedge block (7) is fixed to the side wall of the copper plate (1). The bottom of the bracket (5) is provided with a driving component for driving the lower arc clamp (3) to move.

2. The quick-connect cable for a ring main unit according to claim 1, characterized in that, The drive assembly includes a first guide rail (8) slidably disposed at the bottom of the bracket (5), a lead screw (9) is threadedly inserted into the lower part of the bracket (5), a mounting seat (10) is rotatably sleeved at one end of the lead screw (9), a hexagonal connecting block (11) is coaxially disposed at the end of the lead screw (9), a hexagonal sleeve (12) is slidably sleeved on the hexagonal connecting block (11), a handwheel (14) is coaxially disposed at the end of the hexagonal sleeve (12), and a slide block (13) is rotatably sleeved on the hexagonal sleeve (12).

3. A quick-connect cable connector for a ring main unit according to claim 2, characterized in that, The bottom of the slide block (13) is slidably inserted with a second guide rail (15).

4. A quick-connect cable connector for a ring main unit according to claim 3, characterized in that, Guide rods (16) are longitudinally slidably inserted at both ends of the second guide rail (15).

5. A quick-connect cable connector for a ring main unit according to claim 4, characterized in that, The bracket (5) is provided with a fixing clamp (6) on the top for fixing the outer surface of the cable sheath.

6. A quick-connect cable for a ring main unit according to claim 5, characterized in that, A groove (51) is provided at the connection position between the bracket (5) and the connecting arm (4), and a top spring (52) for resetting the connecting arm (4) is provided inside the groove (51).

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