Alternating-current rod-shaped suspension type composite insulator

Abstract

The utility model discloses an alternating current rod-shaped suspension type composite insulator, which comprises an upper insulator, a middle insulator and a lower insulator, one end of the upper insulator and one end of the middle insulator are respectively provided with a connecting part, and the outer wall of each connecting part is uniformly provided with a plurality of convex parts by taking a circle point as an axis. The other end of the lower insulator and the other end of the middle insulator are provided with a cavity for accommodating the connecting part, and the cavity is provided with a first groove for the protruding part to enter. As the upper insulator, the middle insulator and the lower insulator are designed in a split mode, the single insulator is small in size, light in weight and convenient to carry to the high altitude to be assembled, and the situation that the insulators fall from the high altitude due to the fact that a worker does not have physical strength is prevented; the two insulators can be connected with each other only by rotating one of the insulators, the assembly efficiency is improved, the insulators are stably connected through the elastic pieces, and the product has the advantages of reducing potential safety hazards and being stable in connection.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, in particular to an AC rod-shaped suspension composite insulator. Background Art

[0002] Insulators are devices installed between conductors of different potentials or between conductors and grounded structures, and are able to withstand voltage and mechanical stress. There are many types of insulators with different shapes. Although the structures and appearances of different types of insulators are quite different, they are all composed of two major parts: insulating parts and connecting hardware.

[0003] AC rod-shaped suspension composite insulators are widely used in high-voltage power equipment. AC rod-shaped suspension composite insulators can play an important insulating role in overhead transmission lines. There are many different types of AC rod-shaped suspension composite insulators on the market. In order to make AC rod-shaped suspension composite insulators have better insulation effect, they are generally provided with a large string of insulating disks, and the overall structure is fixed. Although this integrated design is simple and stable, it also brings greater difficulties to its installation and assembly. Due to its overall heavy mass, it is difficult to hoist and manually install it during high-altitude installation. Once the installer is physically exhausted, it is easy to cause the insulator to fall from a high altitude, and even bring greater safety hazards to the installer and ground command personnel. Therefore, the applicant has made a useful design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional AC rod-shaped suspension composite insulator design and provide a product with reduced safety hazards and stable connection.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] An AC rod-shaped suspension composite insulator comprises an upper insulator, a middle insulator, and a lower insulator. A connecting portion is provided at one end of the upper insulator and one end of the middle insulator. A plurality of protrusions are evenly distributed on the outer wall of the connecting portion with a circular point as the axis. A cavity for accommodating the connecting portion is provided at the other end of the lower insulator and the middle insulator. The cavity is provided with a first groove for the protrusion to enter. A second groove is provided on the side wall of the first groove. An elastic sheet is provided on the end face of the protrusion and abuts against the second groove so that the protrusion is tightly pressed against the second groove.

[0007] Preferably, a sealing ring is provided on the outer wall of the connecting portion and abuts against the inner wall of the cavity.

[0008] Preferably, outer walls of the upper insulator, the middle insulator and the lower insulator are provided with a large insulating disk, a small insulating disk and a nut portion.

[0009] Preferably, a hanging seat is provided at the other end of the upper insulator, a detachable fixing plate is provided on the hanging seat, and a hole for accommodating a cable is provided between the hanging seat and the fixing plate.

[0010] Preferably, the other end of the lower insulator is provided with a screw portion.

[0011] Beneficial effects:

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) In the present invention, since the upper insulator, the middle insulator and the lower insulator are of split design, each one is small in size and light in weight, and is easy to carry to a high altitude for assembly, thereby preventing the worker from falling from a high altitude due to physical exhaustion, and reducing the safety hazard during installation.

[0014] (2) According to the utility model, after the connecting part is inserted into the mold cavity and the protrusion is inserted into the first groove, it is only necessary to rotate one of the insulators so that the protrusion enters the second groove. The spring piece is squeezed and stores energy and releases elastic force to the protrusion, so that the protrusion is pressed tightly against the bottom of the second groove, increasing the friction between the protrusion and the second groove, ensuring the stable connection between the insulators, and at the same time, improving the assembly efficiency and quickly adjusting the total height of the entire insulator according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of an AC rod-shaped suspension composite insulator of the utility model;

[0016] Figure 2 This is a schematic diagram of the side cross-sectional structure of an AC rod-shaped suspension composite insulator of the utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of an AC rod-shaped suspension composite insulator;

[0018] Figure 4 This is a structural schematic diagram of a lower insulator of an AC rod-shaped suspension composite insulator according to the present utility model;

[0019] Figure 5 This is a schematic diagram of the exploded structure of a middle insulator of an AC rod-shaped suspension composite insulator of the present utility model;

[0020] Figure 6 This is a schematic diagram of the exploded structure of the upper and middle insulators of an AC rod-shaped suspension composite insulator of the present utility model;

[0021] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0022] Figure numerals: 1. upper insulator; 2. middle insulator; 3. lower insulator; 4. connecting part; 5. cavity; 6. sealing ring; 7. large insulating disk; 8. small insulating disk; 9. nut part; 11. hanging seat; 12. fixing plate; 13. hole; 31. screw part; 41. protrusion; 42. spring piece; 51. first groove; 52. second groove. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] In the embodiments of the present invention, "and / or" is simply a description of the association 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. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0026] Reference example Figures 1 to 6 An AC rod-shaped suspension composite insulator includes an upper insulator 1, a middle insulator 2, and a lower insulator 3. A connecting portion 4 is provided at one end of the upper insulator 1 and one end of the middle insulator 2. The outer wall of the connecting portion 4 is provided with a plurality of protrusions 41 evenly distributed around a circle as the axis. The other ends of the lower insulator 3 and the middle insulator 2 are provided with a cavity 5 for accommodating the connecting portion 4. The cavity 5 is provided with a first groove 51 for the protrusion 41 to enter. The side wall of the first groove 51 is provided with a second groove 52. The end surface of the protrusion 41 is provided with a spring piece 42, which abuts the second groove 52 so that the protrusion 41 is tightly pressed against the second groove 52.

[0027] It is worth mentioning that a sealing ring 6 is provided on the outer wall of the connecting portion 4 and abuts against the inner wall of the cavity 5. The sealing ring 6 increases the sealing of the connection between the insulators and prevents rainwater, dust, and humid air from entering the cavity 5, causing the spring 42 to rust and thereby reducing the elastic potential energy of the spring 42.

[0028] It is worth mentioning that the outer walls of the upper insulator 1, the middle insulator 2, and the lower insulator 3 are provided with a large insulating disk 7, a small insulating disk 8, and a nut portion 9. When sufficient rotational force cannot be applied to the insulator, a wrench is clamped on the nut portion 9 to apply sufficient thrust to the wrench to drive the insulator to rotate. The large insulating disk 7 and the small insulating disk 8 increase the creepage distance of the current to ensure the safety of the line.

[0029] It is worth mentioning that a mounting seat 11 is provided at the other end of the upper insulator 1. A detachable fixing plate 12 is provided on the mounting seat 11. A hole 13 for accommodating a cable is provided between the mounting seat 11 and the fixing plate 12. The cable is placed on the hole 13 of the mounting seat 11, and the fixing plate 12 is fixed to the mounting seat 11 by screws or bolts.

[0030] It is worth mentioning that a screw portion 31 is provided at the other end of the lower insulator 3 , which is mounted on the mounting seat through the screw portion 31 so that the insulator is fixed on the high-altitude bracket.

[0031] The operating principle of the present invention is now described as follows:

[0032] Align the raised portion 41 of the middle insulator 2 with the first groove 51 of the cavity 5 of the lower insulator 3, apply downward pressure to the middle insulator 2, so that the connecting portion 4 enters the cavity 5 and the raised portion 41 enters the first groove 51, rotate the middle insulator 2, and move the raised portion 41 toward the second groove 52. The spring piece 42 is squeezed by the second groove 52, so that it stores energy and releases a downward elastic force to the raised portion 41, pressing the raised portion 41 against the bottom of the second groove 52 until the raised portion 41 abuts against the side wall of the second groove 52. Then stop rotating the middle insulator 2. At this point, the assembly of the middle insulator 2 and the lower insulator 3 is completed.

[0033] The above design solution can enable the product to achieve the advantages of reducing safety risks and ensuring stable connection.

[0034] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. An AC rod-shaped suspension composite insulator, comprising an upper insulator (1), a middle insulator (2), and a lower insulator (3), characterized in that: One end of the upper insulator (1) and one end of the middle insulator (2) are provided with a connecting portion (4); the outer wall of the connecting portion (4) is provided with a plurality of protrusions (41) evenly distributed with a circle as the axis; the other end of the lower insulator (3) and the middle insulator (2) is provided with a cavity (5) for accommodating the connecting portion (4); the cavity (5) is provided with a first groove (51) for the protrusion (41) to enter; the side wall of the first groove (51) is provided with a second groove (52); the end surface of the protrusion (41) is provided with a spring piece (42) and abuts against the second groove (52), so that the protrusion (41) is tightly pressed against the second groove (52).

2. The AC rod-shaped suspension composite insulator according to claim 1, characterized in that: The outer wall of the connecting portion (4) is provided with a sealing ring (6) and abuts against the inner wall of the cavity (5).

3. The AC rod-shaped suspension composite insulator according to claim 1, characterized in that: The outer walls of the upper insulator (1), the middle insulator (2), and the lower insulator (3) are provided with a large insulating disk (7), a small insulating disk (8), and a nut portion (9).

4. The AC rod-shaped suspension composite insulator according to claim 1, characterized in that: The other end of the upper insulator (1) is provided with a hanging seat (11), the hanging seat (11) is provided with a detachable fixing plate (12), and a hole (13) for accommodating a cable is provided between the hanging seat (11) and the fixing plate (12).

5. The AC rod-shaped suspension composite insulator according to claim 1, characterized in that: The other end of the lower insulator (3) is provided with a screw portion (31).

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