Low-resistance isolation pillar

Abstract

The utility model discloses a low resistance isolation pillar, the low resistance isolation pillar comprises an insulation pillar body and a conductive core arranged in the insulation pillar body, the two ends of the conductive core are uniformly provided with a plurality of equidistant connecting holes by taking the conductive core as the axis, the inlet of the connecting hole is provided with a connecting ring, the connecting ring is provided with a compression nut, and the compression nut is provided with a plurality of through holes. A plurality of pressing parts which are arranged at equal intervals and can contract inwards are evenly distributed at one end of the pressing nut in the circumferential direction, and a plurality of protruding parts are arranged on the inner wall of the connecting ring. The conductive connecting piece is screwed into the connecting hole in a threaded mode, the pressing nut is rotated, the pressing part moves to the protruding part in the axial direction, the protruding part exerts inward acting force, the pressing part is made to move towards the axis, a tight contact interface is formed, mechanical locking is enhanced through tight attachment, contact interface gaps and oxide layers are reduced, contact resistance is reduced, and the service life of the conductive connecting piece is prolonged. The structure improves the stability and conductivity of the connection part, and guarantees the electrical characteristics and long-term operation reliability of the isolation pillar.

Description

Technical Field

[0001] This utility model relates to the field of insulator technology, and in particular to a low-resistance isolation post. Background Technology

[0002] An insulator is an important electrical device used in power systems. Also known as an isolation post, its main function is to provide electrical insulation and mechanical support. It is usually made of insulating materials (such as ceramic, glass, or composite insulating materials) and is used to isolate conductors at different potentials or conductors from ground potential components, prevent current leakage and short circuits, and withstand mechanical loads and electric field stresses.

[0003] Existing isolation supports typically use threaded connections to connect to cables or conductive rods. This connection structure is prone to loosening under external mechanical forces or vibrations. Loosening at the connection interface leads to increased contact resistance, thereby increasing the overall circuit resistance and negatively impacting the electrical performance and long-term reliability of the isolation support. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below arose from this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional isolation support design and provide a product with stable connection and low loop resistance.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A low-resistance isolation support includes an insulating column and a conductive core disposed therein. Both ends of the conductive core are evenly distributed with a plurality of equally spaced connecting holes centered on it. A connecting ring is provided at the entrance of each connecting hole. The connecting ring is provided with a clamping nut and is threadedly connected to the connecting ring. One end of the clamping nut is evenly distributed with a plurality of equally spaced inwardly retractable clamping parts along the circumferential direction. The inner wall of the connecting ring is provided with a plurality of protrusions for moving the clamping parts toward the axis of the connecting holes.

[0007] Preferably, the inlet of the conductive core is provided with a groove for accommodating the connecting ring.

[0008] Preferably, the protrusion is located near one end of the connecting ring, and one side of the protrusion has an inclined guide surface. The protrusion is also provided with a fastening screw and is threaded into the groove.

[0009] Preferably, the clamping nut has an extension portion, the clamping portion is disposed at one end of the extension portion, a gap for accommodating the protrusion is provided between adjacent clamping portions, an extension groove is provided above the gap for the clamping portion to retract inward, and inclined surfaces are provided on both sides of the clamping portion.

[0010] Preferably, the outer wall of the insulating column is provided with a plurality of equally spaced umbrella skirts from top to bottom.

[0011] Beneficial effects:

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, the conductive connector is screwed into the connecting hole via a thread. Subsequently, the clamping nut is rotated, causing the clamping component to move along the thread axis to a preset protrusion. This protrusion gradually applies an inward force to the clamping component, forcing it to displace towards the axis of the connecting hole. This process promotes a tighter contact interface between the clamping component and the conductive connector. This tight fit enhances the mechanical locking effect between the two, reduces gaps and oxide layers at the contact interface, and thus helps to reduce the contact resistance value. This operation aims to improve the stability and conductivity of the connection part, so as to ensure the electrical characteristics of the isolation support and its reliability during long-term operation. Attached Figure Description

[0014] Figure 1 This is a side cross-sectional view of a low-resistance isolation support column according to the present invention.

[0015] Figure 2 This utility model Figure 1 A partially enlarged view A of a low-resistance isolation strut;

[0016] Figure 3 This is an exploded structural diagram of a low-resistance isolation support column according to the present invention.

[0017] The correspondence between the labels and component names in the attached figures is as follows:

[0018] Reference numerals: 1. Insulating column; 2. Conductive core; 3. Connecting ring; 4. Compression nut; 11. Umbrella skirt; 21. Connecting hole; 22. Countersunk groove; 31. Protrusion; 32. Guide surface; 33. Fastening screw; 41. Compression part; 42. Extension part; 43. Spacing; 44. Extension groove; 45. Inclined surface. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., 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 simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0022] Reference example Figures 1 to 3 A low-resistance isolation support includes an insulating column 1 and a conductive core 2 disposed therein. The two ends of the conductive core 2 are evenly distributed with a plurality of equally spaced connecting holes 21 43 around its axis. A connecting ring 3 is provided at the entrance of the connecting holes 21. The connecting ring 3 is provided with a clamping nut 4 and is threadedly connected to the connecting ring 3. One end of the clamping nut 4 is evenly distributed with a plurality of inwardly retractable clamping parts 41 43 at equal intervals 43 along the circumferential direction. The inner wall of the connecting ring 3 is provided with a plurality of protrusions 31 for moving the clamping parts 41 toward the axis of the connecting holes 21.

[0023] The conductive connector is screwed into the connection hole 21 via a thread. The conductive connector includes a conductive rod and a cable with a copper lug passing through the conductive rod. Then, the clamping nut 4 is rotated, causing the clamping part 41 to move along the thread axis to the preset protrusion 31. The protrusion 31 gradually applies an inward force to the clamping part 41, forcing it to move in the axial direction of the connection hole 21. This process causes the clamping part 41 and the conductive connector to form a tighter contact interface. This tight fit enhances the mechanical locking effect between the two, reduces the gap and oxide layer at the contact interface, and thus helps to reduce the contact resistance value. This operation aims to improve the stability and conductivity of the connection part to ensure the electrical characteristics of the isolation support and its reliability during long-term operation.

[0024] It is worth mentioning that the entrance of the conductive core 2 is provided with a groove 22 for accommodating the connecting ring 3, and the groove 22 makes the connecting ring 3 flush with the surface of the conductive core 2.

[0025] It is worth mentioning that the protrusion 31 is close to one end of the connecting ring 3. One side of the protrusion 31 is provided with an inclined guide surface 32. The protrusion 31 is also provided with a fastening screw 33, which is threaded to the groove 22. The inclined surface 45 allows the pressing part 41 to move on it. As the pressing part 41 gradually moves to the top of the inclined surface 45, the force applied by the protrusion 31 to the pressing part 41 becomes greater. The fastening screw 33 facilitates the quick assembly and disassembly of the connecting ring 3.

[0026] It is worth mentioning that the clamping nut 4 is provided with an extension 42, and a clamping part 41 is provided at one end of the extension 42. There is a gap 43 between adjacent clamping parts 41 to accommodate the protrusion 31. An extension groove 44 is provided above the gap 43 to allow the clamping part 41 to retract. Inclined surfaces 45 are provided on both sides of the clamping part 41. During assembly, the gap 43 of the clamping nut 4 is aligned with the protrusion 31 of the connecting ring 3, the extension 42 is inserted into the connecting ring 3, and the clamping part 41 is subject to tolerance control. After entering the inner wall of the connecting ring 3, it fits tightly against it. This design increases friction and prevents the clamping nut 4 from coming off. The inclined surface 45 helps the clamping part 41 to smoothly enter the guide surface 32 and reduces the friction during entry.

[0027] It is worth mentioning that the outer wall of the insulating column 1 is provided with several equally spaced umbrella skirts 11 from top to bottom. The umbrella skirts 11 are designed to extend the leakage path of the current on the surface of the insulating column 1 and increase the distance required for the current to flow from the high voltage conductor to the grounding part. This can effectively improve the insulation level of the insulating column 1 and prevent the occurrence of surface flashover. Flashover refers to the arc discharge formed by the current passing through the insulating surface, which may lead to equipment failure.

[0028] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A low-resistance insulating support column, comprising an insulating column (1) and a conductive core (2) disposed therein, characterized in that: The conductive core (2) has several equally spaced (43) connecting holes (21) evenly distributed at both ends with its axis as the center. A connecting ring (3) is provided at the entrance of the connecting hole (21). The connecting ring (3) is provided with a clamping nut (4) and is threaded to the connecting ring (3). One end of the clamping nut (4) is evenly distributed with several equally spaced (43) inwardly retractable clamping parts (41) along the circumferential direction. The inner wall of the connecting ring (3) is provided with several protrusions (31) for moving the clamping parts (41) toward the axis of the connecting hole (21).

2. The low-resistance isolation support according to claim 1, characterized in that: The conductive core (2) is provided with a groove (22) for accommodating the connecting ring (3) at its inlet.

3. The low-resistance isolation support according to claim 2, characterized in that: The protrusion (31) is located near one end of the connecting ring (3). One side of the protrusion (31) is provided with an inclined guide surface (32). The protrusion (31) is also provided with a fastening screw (33) and is threadedly connected to the groove (22).

4. The low-resistance isolation support according to claim 1, characterized in that: The clamping nut (4) is provided with an extension (42), and the clamping part (41) is provided at one end of the extension (42). There is a gap (43) between adjacent clamping parts (41) to accommodate the protrusion (31). An extension groove (44) is provided above the gap (43) to allow the clamping part (41) to retract. Inclined surfaces (45) are provided on both sides of the clamping part (41).

5. The low-resistance isolation support according to claim 1, characterized in that: The outer wall of the insulating column (1) is provided with several umbrella skirts (11) with equal spacing (43) from top to bottom.

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