Flexible connection terminal for surge arrester

Abstract

The utility model discloses a flexible connection terminal of lightning arrester belongs to lightning arrester technical field, including base, and base is the planar board shape structure, support mechanism sets up at the center place of base top, fixed part, and one end of fixed part is linked with support mechanism, two conductive mechanisms, two conductive mechanisms are located at the both sides of pipe mother respectively, and the conductive mechanism includes: two buffer assemblies, one of two buffer assemblies sets up on the connecting plate, and another sets up on the base, and the both ends of conductive soft copper band are connected with the adapter block respectively, the utility model discloses through setting two buffer assemblies on base and fixed part, makes the conductive soft copper band when being affected by wind force and buffering through two buffer assemblies, thereby reduces the wind force influence that the conductive soft copper band received, has solved the technical problem of the conductive soft copper band in prior art and easily caused the mechanical fatigue of wind force and led to the fracture, has realized the technical effect of improving the conductive soft copper band structure durability.

Description

Technical Field

[0001] This utility model relates to the field of surge arresters, and in particular to a flexible connection terminal for surge arresters. Background Technology

[0002] Surge arrester connection terminals are key interfaces for connecting surge arresters to external electrical systems, used to achieve lightning current discharge, equipment protection, and grounding functions. Existing patent CN223109273U discloses a flexible connection terminal for surge arresters, including a surge arrester connection base. Two connection feet are welded to the upper surface of the surge arrester connection base. Two rotating connectors are connected between the two connection feet by shaft bolts. A fixing hardware is welded between the upper ends of the two rotating connectors. A conductive soft copper strip is provided between both sides of the fixing hardware and the upper surface of the surge arrester connection base. A removable hardware is fixed to the upper surface of the fixing hardware by two sets of bolts. Both the removable and fixing hardware are semi-circular structures. A tube nut is fixed between the removable and fixing hardware. The tube nut can be fixed by the fixing and removable hardware, thus facilitating the fixing or removal of the tube nut.

[0003] In actual use, although the above-mentioned equipment uses flexible connection terminals to effectively buffer the impact of external loads on the surge arrester, under strong wind conditions, the conductive soft copper strip is rigidly fixed to the mounting plate at both ends by bolts. It is susceptible to low-frequency (0.5Hz-5Hz) high-amplitude vibrations caused by wind, which leads to stress concentration at the connection interface. This can cause mechanical fatigue failure and fracture of the soft copper strip, interruption of the electrical connection between the surge arrester and the busbar. Furthermore, the dynamic load amplification effect will exacerbate the fretting wear at the connection interface, reduce structural durability, and ultimately seriously threaten the reliability of the system's lightning protection. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where conductive soft copper strips are susceptible to mechanical fatigue due to wind forces, and to propose a flexible connection terminal for surge arresters.

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

[0006] A surge arrester flexible connection terminal includes a base, the base being a planar plate structure, which is connected to the surge arrester by bolts and nuts;

[0007] A support mechanism is provided at the center of the top of the base and is fixedly connected to the base.

[0008] The fastener has one end connected to the support mechanism and the other end connected to the tube nut clamp. Connecting plates are provided on both sides of the fastener.

[0009] Two conductive mechanisms are located on both sides of the tube nut, with one end of each conductive mechanism disposed on the connecting plate and the other end disposed on the base.

[0010] The conductive mechanism includes:

[0011] Two buffer components, one of which is disposed on the connecting plate and the other is disposed on the base;

[0012] A conductive soft copper strip, with adapter blocks connected to both ends of the conductive soft copper strip, and the conductive soft copper strip is connected to two buffer components through the two adapter blocks.

[0013] Furthermore, the support mechanism includes two support legs, and the fixing member is located between the two support legs and is movably connected to the two support legs.

[0014] Furthermore, the buffer component includes:

[0015] The mounting box is a hollow box structure with a movable groove in the hollow part. Screw fasteners are fixed on both sides of the mounting box, and a cover plate is hinged to the mounting box.

[0016] An elastic element is disposed within the movable groove, and one end of the elastic element is fixedly connected to the mounting box.

[0017] A fixing frame is disposed within the movable groove and connected to the elastic element;

[0018] Both the mounting box and the adapter block are made of conductive metal, and the adapter block is fitted into the movable groove.

[0019] Furthermore, a slot is provided at the end of the mounting box away from the hinged end of the cover plate, and the cover plate is also provided with a buckle that matches the slot;

[0020] The mounting box has two assembly cavities at one end of the slot, and the two assembly cavities are respectively located on both sides of the slot;

[0021] A slide hole is provided on one side of the assembly cavity.

[0022] Furthermore, it also includes a locking mechanism;

[0023] The locking mechanism is disposed on the mounting box and includes two locking components, which are respectively disposed in the two assembly cavities and are symmetrically arranged with the slot as the axis.

[0024] Furthermore, the locking component includes:

[0025] A locking screw, wherein the locking screw is disposed within the slide hole;

[0026] A pin is provided on one end of the locking screw near the slot, and the pin is fixedly connected to the locking screw;

[0027] The worm gear is movably disposed within the assembly cavity. The center of the worm gear is provided with an internal thread that is adapted to the locking screw, and the locking screw is threadedly connected to the worm gear through the internal thread.

[0028] A worm gear is assembled in the assembly cavity and is perpendicular to the locking screw. The worm gear is adapted to the worm wheel.

[0029] Furthermore, a rotating plate is also provided at one end of the worm gear.

[0030] The beneficial effects of this utility model are as follows:

[0031] This application solves the technical problem in the prior art that conductive soft copper strips are prone to breakage due to mechanical fatigue caused by wind by setting two buffer components on the base and the fixing component, thereby reducing the impact of wind on the conductive soft copper strip. This achieves the technical effect of improving the structural durability of conductive soft copper strips. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a flexible connection terminal structure for a surge arrester provided in an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of the buffer component structure provided in the embodiments of this utility model;

[0034] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0035] The markings in the diagram are as follows:

[0036] 1. Base;

[0037] 2. Supporting mechanism; 21. Support legs;

[0038] 3. Fasteners;

[0039] 4. Conductive mechanism; 41. Buffer assembly; 411. Mounting box; 4111. Slot; 4112. Assembly cavity; 4113. Slide hole; 412. Movable groove; 413. Screw buckle plate; 414. Cover plate; 4141. Snap buckle; 415. Elastic element; 416. Fixing bracket; 42. Conductive soft copper strip; 421. Adapter block;

[0040] 5. Locking mechanism; 51. Locking assembly; 511. Locking screw; 512. Pin; 513. Worm gear; 514. Worm; 515. Rotating plate. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] Reference Figures 1 to 3As shown, a surge arrester flexible connection terminal, in practical applications, serves as an interface between the surge arrester and the busbar, capable of discharging lightning current and protecting electrical equipment. It includes a base 1, a support mechanism 2 disposed on the base 1, a fixing member 3 connected to the support mechanism 2, and two conductive mechanisms 4.

[0046] Specifically, the base 1 is a flat plate structure, which is fixedly connected to the surge arrester by bolts and nuts. The support mechanism 2 is located at the center of the top of the base 1, and is fixedly connected to the base 1 by bolts and nuts. One end of the fixing member 3 is connected to the support mechanism 2, and the other end is snapped into the tube nut to connect the surge arrester and the tube nut. Connecting plates are fixedly installed on both sides of the fixing member 3. Two conductive mechanisms 4 are located on both sides of the tube nut, with one end of the conductive mechanism 4 installed on the connecting plate and the other end installed on the base 1. The conductive mechanism 4 is used to guide the lightning current on the tube nut to the surge arrester.

[0047] In this embodiment, the support mechanism 2 includes two support legs 21, which are L-shaped and symmetrically arranged about the center of the base 1. The fixing member 3 is located between the two support legs 21 and is movably connected to the top of the two support legs 21, so that the fixing member 3 can rotate between the two support legs 21 along the connection point with the support legs 21.

[0048] In this embodiment, for ease of explanation, the conductive mechanism 4 is described as a single conductive mechanism 4. The conductive mechanism 4 includes two buffer components 41 and a conductive soft copper strip 42 connected to the two buffer components 41. One of the two buffer components 41 is fixedly mounted on the connecting plate, and the other is fixedly mounted on the base 1. Adapter blocks 421 are fixedly connected to both ends of the conductive soft copper strip 42. The conductive soft copper strip 42 is connected to the two buffer components 41 through the two adapter blocks 421, so that when the conductive soft copper strip 42 is subjected to external impact, the buffer components 41 can buffer the force on itself, reducing fatigue accumulation in the conductive soft copper strip 42.

[0049] Please see Figure 2As shown, and more specifically, for ease of explanation, the buffer assembly 41 is described here as a buffer mechanism. The buffer assembly 41 includes a mounting box 411, an elastic element 415 disposed within the mounting box 411, and a fixing bracket 416 connected to the elastic element 415. The mounting box 411 is a hollow box structure with a movable groove 412 in its hollow portion. Screw fasteners 413 are fixedly disposed on both sides of the bottom of the mounting box 411. The mounting box 411 can be fixedly disposed on the connecting plate or base 1 by passing bolts through the screw fasteners 413 and threading them with the connecting plate or base 1. The mounting box 411 is also provided with a cover plate 414 for covering the movable groove 412, and one end of the cover plate 414 is hinged to the mounting box 411. The end of the mounting box 411 away from the hinged end with the cover plate 414 is provided with a slot 4111. The cover plate 414 is also provided with a buckle 4141 adapted to the slot 4111. That is, after the cover plate 414 is flipped along its hinge point with the mounting box 411, the buckle 4141 is inserted into the slot 4111, thereby achieving a fastening connection between the cover plate 414 and the mounting box 411, thus completing the covering of the movable groove 412. The elastic element 415 is disposed within the movable groove 412, and one end of the elastic element 415 is fixedly connected to the mounting box 411. In some embodiments, the elastic element 415 is a spring. For example, when the spring is subjected to an external force, it deforms to store potential energy, and after the external force disappears, it recovers its deformation by releasing energy. The mounting bracket 416 is a frame-like structure with one side shielded and the other sides unshielded. The mounting bracket 416 is movably disposed within the movable groove 412, and its shielded side is fixedly connected to the elastic member 415. The adapter block 421 is installed within the mounting bracket 416 by engaging with it. Both the mounting box 411 and the adapter block 421 are made of conductive metals such as copper-based alloys. The adapter block 421 fits snugly against the movable groove 412, allowing the lightning current on the conductive soft copper strip 42 to be conducted through the adapter block 421 to the mounting box 411, and then through the base 1 to the surge arrester.

[0050] In this embodiment, when the conductive soft copper strip 42 is affected by wind, the adapter block 421 is snapped into the fixing frame 416, allowing the conductive soft copper strip 42 to swing within the stroke range of the elastic member 415, thereby reducing the impact of wind on the conductive soft copper strip 42.

[0051] Please see Figures 2 to 3As shown, in this embodiment, to fix the cover plate 414 to the mounting box 411, the surge arrester flexible connection terminal also includes a locking mechanism 5, which is disposed on the box wall of the mounting box 411. The locking mechanism 5 serves two purposes: firstly, it reduces the possibility of the cover plate 414 falling off under conditions of significant vibration in the mounting box 411, protecting the components inside the mounting box 411 and preventing short circuits caused by rainwater intrusion; secondly, it facilitates quick disassembly of the cover plate 414 by personnel, thereby enabling rapid disassembly and maintenance of the conductive soft copper strip 42.

[0052] Specifically, the mounting box 411 has two assembly cavities 4112 at one end of the slot 4111, and the two assembly cavities 4112 are located on both sides of the slot 4111. The locking mechanism 5 includes two locking components 51, which are respectively disposed in the two assembly cavities 4112 and are symmetrically arranged about the slot 4111. When the buckle 4141 is inserted into the slot 4111, the two locking components 51 lock the two ends of the buckle 4141 respectively, thereby fixing the cover plate 414.

[0053] More specifically, for ease of explanation, the locking assembly 51 will be described using only one locking assembly 51. The locking assembly 51 includes a locking screw 511, a pin 512 disposed on the locking screw 511, a worm gear 513 connected to the locking screw 511, and a worm 514 adapted to the worm. Specifically, a slide hole 4113 is provided on one side of the assembly cavity 4112, and the locking screw 511 is movably disposed within the slide hole 4113 and can move within the assembly cavity 4112. The pin 512 is disposed on one end of the locking screw 511 near the slot 4111, and the pin 512 is fixedly connected to the locking screw 511 so that the pin 512 can move with the locking screw 511. The mounting cavity 4112 has a through hole in its groove wall, and the mounting cavity 4112 communicates with the slot 4111 through the through hole. The pin 512 can enter the slot 4111 through the through hole. The buckle 4141 has insertion holes at both ends that are adapted to the pin 512. By inserting the pin 512 into the insertion holes, the buckle 4141 is locked, thereby fixing the cover plate 414 when it is fastened to the mounting box 411. An annular slide rail is fixedly installed at the opening of the slide hole 4113 in the assembly cavity 4112. The annular slide rail is T-shaped. The worm wheel 513 is movably installed in the assembly cavity 4112 through the annular slide rail, that is, the worm wheel 513 is engaged with the annular slide rail, so that the worm wheel 513 can rotate on the annular slide rail. The center of the worm wheel 513 is provided with an internal thread that matches the locking screw 511, and the locking screw 511 is threadedly connected to the worm wheel 513 through the internal thread. By rotating the worm wheel 513, the locking screw 511 can be driven to move along the slide hole 4113 under the action of the internal thread. The worm gear 514 is rotatably mounted in the assembly cavity 4112 and is perpendicular to the locking screw 511. The worm gear 514 is adapted to the worm wheel 513, that is, by rotating the worm gear 514, the worm wheel 513 can be driven to rotate, thereby driving the locking screw 511 to move and push the pin 512 into the insertion hole, thereby locking the buckle 4141 and fixing the cover plate 414. Specifically, in the worm gear 514 structure, when the lead angle of the worm gear 514 is less than the equivalent friction angle between the meshing teeth, the mechanism has self-locking properties. At this time, only the worm gear 514 can drive the worm wheel 513, and the worm wheel 513 cannot drive the worm gear 514, to prevent the worm wheel 513 from reversing after rotation, causing the pin 512 to fall out of the insertion hole.

[0054] In some preferred embodiments, a rotating plate 515 is fixedly provided at one end of the worm gear 514, and a plurality of anti-slip grooves are provided on the edge of the rotating plate 515 so that the operator can rotate the rotating plate 515, thereby driving the worm gear 514 to rotate.

[0055] 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 flexible connection terminal for a surge arrester, characterized in that, include: The base (1) is a flat plate structure, which is connected to the surge arrester by means of bolts and nuts; A support mechanism (2) is provided at the center of the top of the base (1) and is fixedly connected to the base (1); The fastener (3) has one end connected to the support mechanism (2) and the other end connected to the tube clamp. The fastener (3) has connecting plates on both sides. Two conductive mechanisms (4) are located on both sides of the tube, and one end of the conductive mechanism (4) is disposed on the connecting plate and the other end is disposed on the base (1). The conductive mechanism (4) includes: Two buffer components (41), one of which is disposed on the connecting plate and the other is disposed on the base (1); A conductive soft copper strip (42) is provided, with adapter blocks (421) connected to both ends of the conductive soft copper strip (42). The conductive soft copper strip (42) is connected to two buffer components (41) through the two adapter blocks (421).

2. The surge arrester flexible connection terminal according to claim 1, characterized in that, The support mechanism (2) includes two support legs (21), and the fixing member (3) is located between the two support legs (21) and is movably connected to the two support legs (21).

3. The surge arrester flexible connection terminal according to claim 1, characterized in that, The buffer component (41) includes: The mounting box (411) is a hollow box structure with a movable groove (412) in the hollow part. Screw fasteners (413) are fixedly installed on both sides of the mounting box (411). A cover plate (414) is also hinged on the mounting box (411). An elastic element (415) is disposed in the movable groove (412), and one end of the elastic element (415) is fixedly connected to the mounting box (411). A fixing frame (416) is disposed in the movable groove (412) and connected to the elastic member (415); The mounting box (411) and the adapter block (421) are both made of conductive metal, and the adapter block (421) is attached to the movable groove (412).

4. A flexible connection terminal for a surge arrester according to claim 3, characterized in that, The mounting box (411) is provided with a slot (4111) at the end away from the hinged end of the cover plate (414), and the cover plate (414) is also provided with a buckle (4141) that is adapted to the slot (4111). The mounting box (411) is located at one end of the slot (4111) and has two assembly cavities (4112) respectively located on both sides of the slot (4111); A slide hole (4113) is provided on one side of the assembly cavity (4112).

5. A flexible connection terminal for a surge arrester according to claim 4, characterized in that, It also includes a locking mechanism (5); The locking mechanism (5) is disposed on the mounting box (411). The locking mechanism (5) includes two locking components (51). The two locking components (51) are respectively disposed in the two assembly cavities (4112) and are symmetrically arranged with the slot (4111) as the axis.

6. A flexible connection terminal for a surge arrester according to claim 5, characterized in that, The locking assembly (51) includes: A locking screw (511) is disposed in the slide hole (4113); A pin (512) is provided on one end of the locking screw (511) near the slot (4111), and the pin (512) is fixedly connected to the locking screw (511). Worm gear (513), the worm gear (513) is movably disposed in the assembly cavity (4112), the center of the worm gear (513) is provided with an internal thread that is compatible with the locking screw (511), and the locking screw (511) is threadedly connected to the worm gear (513) through the internal thread; The worm (514) is assembled in the assembly cavity (4112) and is perpendicular to the locking screw (511). The worm (514) is adapted to the worm wheel (513).

7. A flexible connection terminal for a surge arrester according to claim 6, characterized in that, A rotating plate (515) is also provided at one end of the worm (514).

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