Composite insulator

Abstract

The utility model relates to the technical field of composite insulators, in particular to a composite insulator, which comprises a core rod, a plurality of groups of umbrella covers are integrally injection-molded on the surface of the core rod, a connecting seat is arranged at the bottom end of the core rod, a replacement structure is arranged between the connecting seat and the core rod, and the replacement structure is convenient for replacing the connecting seat. A mounting piece is arranged at the top end of the core rod, and quick mounting structures are arranged at the two ends of the mounting piece and are used for quickly mounting the core rod. According to the utility model, the problem of fixing by using bolts in the prior art is solved, and the convenience of replacing the connecting seat of the composite insulator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite insulators, and particularly relates to a composite insulator. Background Technique

[0002] The composite insulator, also known as a non-ceramic insulator, is a polymer insulator composed of at least two insulating components, namely a core rod, a shed assembly with metal accessories, and a connecting seat at the bottom. At present, with the implementation of UHV power transmission projects in China and the further development of the West-East Power Transmission Project, the demand for high-voltage composite insulators will increase significantly.

[0003] However, the existing composite insulators are fixed by bolts during installation, which results in high labor intensity during the installation of composite insulators; moreover, the existing composite insulators are not convenient enough to replace the connecting seat, thus bringing great trouble to people's use. Content of the Utility Model

[0004] The purpose of the utility model is to provide a composite insulator to solve the problems that the existing composite insulators are fixed by bolts during installation and are not convenient enough to replace the connecting seat as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A composite insulator includes a core rod. A plurality of groups of shed assemblies are integrally injection-molded on the surface of the core rod. A connecting seat is arranged at the bottom end of the core rod, and a replacement structure is arranged between the connecting seat and the core rod, and this replacement structure facilitates the replacement work of the connecting seat; an installation piece is arranged at the top end of the core rod, and quick-installation structures are arranged at both ends of the installation piece, and these quick-installation structures are used for the quick installation work of the core rod.

[0006] Preferably, the replacement structure is composed of a fixed sleeve, a locking screw, an annular groove, and a pressing piece. The fixed sleeve is fixedly connected to the bottom of the core rod, and the top of the connecting seat is inserted into the inside of the fixed sleeve.

[0007] Preferably, an annular groove is formed inside the fixed ferrule, and three extrusion sheets are arranged inside the annular groove, and the included angle between adjacent extrusion sheets is 120 degrees. A locking screw is arranged on the surface of the fixed ferrule, and one end of the locking screw penetrates through the fixed ferrule and is fixedly connected to the surface of the extrusion sheet.

[0008] Preferably, a tension spring is sleeved on the surface of the locking screw, one end of the tension spring is fixedly connected to the surface of the locking screw, and the other end of the tension spring is fixedly connected to the surface of the fixed ferrule.

[0009] Preferably, the inside of the quick-installation structure includes an installation cavity, a T-shaped rod, a tension spring, a rectangular groove, a rectangular buckle and a circular groove. Installation cavities are arranged on both sides of the surface of the installation piece, a rectangular groove is arranged on the surface of the mandrel on one side of the installation cavity, a circular groove is arranged inside the mandrel on one side of the rectangular groove, and the circular groove, the rectangular groove and the installation cavity are communicated with each other.

[0010] Preferably, a T-shaped rod is arranged inside the installation cavity, one end of the T-shaped rod passes through the rectangular groove and is fixedly connected with a rectangular buckle, and the rectangular buckle is staggered from the rectangular groove. The other end of the T-shaped rod is rotatably connected with a tension spring, and one end of the tension spring is fixedly connected to the surface of the installation cavity.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: This composite insulator not only solves the problem of the existing installation being fixed by bolts, but also improves the convenience of replacing the connecting seat of the composite insulator;

[0012] By providing a quick-installation structure, when the quick-installation structure is implemented, by rotating the T-shaped rod, the rectangular buckle is driven to pass through the rectangular groove and buckle into the inside of the circular groove. Subsequently, by rotating the T-shaped rod, the rectangular buckle is staggered from the rectangular groove. Then, under the elastic action of the tension spring, the T-shaped rod is pushed to move outwards, thereby fastening the mandrel, solving the problem of the existing installation being fixed by bolts;

[0013] By providing a replacement structure, when the replacement structure is implemented, by pulling the locking screw outwards, the locking screw drives the extrusion sheet to retract into the annular groove. Subsequently, the required connecting seat is inserted into the inside of the fixed ferrule. After insertion, under the elastic action of the tension spring, the extrusion sheet at one end of the locking screw is pressed and fastened to the surface of the connecting seat, thereby improving the convenience of replacing the connecting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional external structure schematic diagram of the present utility model;

[0015] Figure 2 is a cross-sectional structure schematic diagram of the quick-installation structure of the present utility model;

[0016] Figure 3 Schematic top view of the quick installation structure of the present utility model;

[0017] Figure 4 Schematic top view of the replacement structure of the present utility model;

[0018] Figure 5 Schematic view of the structure of various connection seats of the present utility model.

[0019] In the figure: 1, mandrel; 2, umbrella sleeve; 3, connection seat; 4, replacement structure; 41, fixed ferrule; 42, locking screw; 43, annular groove; 44, extrusion piece; 45, tension spring; 5, quick installation structure; 51, installation cavity; 52, T-shaped rod; 53, tension spring; 54, rectangular groove; 55, rectangular buckle; 56, circular groove; 6, installation piece. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0021] The structure of a composite insulator provided by the present utility model is as shown in Figure 1 , Figure 4 and Figure 5As shown in the figure, it includes a mandrel 1. Several groups of umbrella sleeves 2 are integrally injection-molded on the surface of the mandrel 1. A connecting seat 3 is arranged at the bottom end of the mandrel 1, and a replacement structure 4 is arranged between the connecting seat 3 and the mandrel 1. This replacement structure 4 facilitates the replacement work of the connecting seat 3. The replacement structure 4 is composed of a fixed hoop 41, a locking screw 42, an annular groove 43 and a pressing piece 44. The fixed hoop 41 is fixedly connected to the bottom of the mandrel 1, and the top of the connecting seat 3 is inserted into the inside of the fixed hoop 41. An annular groove 43 is opened inside the fixed hoop 41, and three pressing pieces 44 are arranged inside the annular groove 43. The included angle between adjacent pressing pieces 44 is 120 degrees. A locking screw 42 is arranged on the surface of the fixed hoop 41, and one end of the locking screw 42 passes through the fixed hoop 41 and is fixedly connected to the surface of the pressing piece 44. A tension spring 45 is sleeved on the surface of the locking screw 42. One end of the tension spring 45 is fixedly connected to the surface of the locking screw 42, and the other end of the tension spring 45 is fixedly connected to the surface of the fixed hoop 41. An installation piece 6 is arranged at the top end of the mandrel 1, and quick-installation structures 5 are arranged at both ends of the installation piece 6. This quick-installation structure 5 is used for the quick installation work of the mandrel 1.

[0022] During implementation, when the replacement structure 4 is implemented, by pulling the locking screw 42 outwards, the locking screw 42 drives the pressing piece 44 to retract into the annular groove 43. Then, the required connecting seat 3 is inserted into the inside of the fixed hoop 41. After insertion, due to the elastic force of the tension spring 45, the pressing piece 44 at one end of the locking screw 42 is pressed and fastened to the surface of the connecting seat 3, thereby improving the convenience during the replacement of the connecting seat 3.

[0023] Furthermore, as Figure 2 and Figure 3 shown, the inside of the quick-installation structure 5 includes an installation cavity 51, a T-shaped rod 52, a tension spring 53, a rectangular groove 54, a rectangular buckle 55 and a circular groove 56. Installation cavities 51 are arranged on both sides of the surface of the installation piece 6. A rectangular groove 54 is arranged on the surface of the mandrel 1 on one side of the installation cavity 51, and a circular groove 56 is arranged inside the mandrel 1 on one side of the rectangular groove 54. The circular groove 56, the rectangular groove 54 and the installation cavity 51 are interconnected. A T-shaped rod 52 is arranged inside the installation cavity 51. One end of the T-shaped rod 52 passes through the rectangular groove 54 and is fixedly connected with a rectangular buckle 55. The rectangular buckle 55 and the rectangular groove 54 are offset from each other. The other end of the T-shaped rod 52 is rotatably connected with a tension spring 53. One end of the tension spring 53 is fixedly connected to the surface of the installation cavity 51.

[0024] During implementation, by rotating the T-shaped rod 52, it drives the rectangular buckle 55 to pass through the rectangular groove 54 and buckle into the interior of the circular groove 56. Subsequently, by rotating the T-shaped rod 52, the rectangular buckle 55 is offset from the rectangular groove 54. Then, through the elastic force of the tension spring 53, the T-shaped rod 52 is pushed to move outward, thereby fastening the mandrel 1, solving the problem of the existing installation using bolts for fixation.

[0025] Working principle: During use, first, the mandrel 1 is installed through the quick-installation structure 5. When installing, the mandrel 1 and the installation piece 6 are butted on the column to be installed. Subsequently, by rotating the T-shaped rod 52, it drives the rectangular buckle 55 to pass through the rectangular groove 54 and buckle into the interior of the circular groove 56. Then, by rotating the T-shaped rod 52, the rectangular buckle 55 is offset from the rectangular groove 54. Then, through the elastic force of the tension spring 53, the T-shaped rod 52 is pushed to move outward, thereby fastening the mandrel 1, solving the problem of the existing installation using bolts for fixation.

[0026] When the composite insulator is in use, the connecting seat 3 is replaced through the replacement structure 4. During the implementation of the replacement structure 4, by pulling the locking screw 42 outward, the locking screw 42 drives the extrusion piece 44 to retract into the interior of the annular groove 43. Subsequently, the required connecting seat 3 is inserted into the interior of the fixed ferrule 41. After insertion, through the elastic force of the tension spring 45, the extrusion piece 44 at one end of the locking screw 42 is pressed and fastened to the surface of the connecting seat 3, thereby improving the convenience of replacing the connecting seat 3.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A composite insulator, comprising a core rod (1), characterized in that: The surface of the core rod (1) is integrally injection-molded with a plurality of umbrella sleeves (2); a connecting seat (3) is provided at the bottom end of the core rod (1), and a replacement structure (4) is provided between the connecting seat (3) and the core rod (1); the replacement structure (4) facilitates replacement of the connecting seat (3); a mounting plate (6) is provided at the top end of the core rod (1), and quick-installation structures (5) are provided at both ends of the mounting plate (6); the quick-installation structures (5) are used for quick installation of the core rod (1).

2. A composite insulator according to claim 1, characterized in that: The replacement structure (4) is composed of a fixed hoop (41), a locking screw (42), an annular groove (43) and an extrusion sheet (44); the fixed hoop (41) is fixedly connected to the bottom of the core rod (1), and the top of the connecting seat (3) is inserted into the interior of the fixed hoop (41).

3. A composite insulator according to claim 2, characterized in that: An annular groove (43) is provided inside the fixed hoop (41), and three groups of extrusion sheets (44) are provided inside the annular groove (43), and the included angle between adjacent extrusion sheets (44) is 120 degrees. A locking screw (42) is provided on the surface of the fixed hoop (41), and one end of the locking screw (42) passes through the fixed hoop (41) and is fixedly connected to the surface of the extrusion sheet (44).

4. A composite insulator according to claim 3, characterized in that: A tension spring (45) is sleeved on the surface of the locking screw (42), one end of the tension spring (45) is fixedly connected to the surface of the locking screw (42), and the other end of the tension spring (45) is fixedly connected to the surface of the fixing hoop (41).

5. A composite insulator according to claim 1, characterized in that: The interior of the quick-install structure (5) comprises an installation cavity (51), a T-shaped rod (52), a tension spring (53), a rectangular groove (54), a rectangular buckle (55) and a circular groove (56); the installation cavity (51) is provided on both sides of the surface of the installation plate (6); the surface of the core rod (1) on one side of the installation cavity (51) is provided with a rectangular groove (54); the core rod (1) on one side of the rectangular groove (54) is provided with a circular groove (56); and the circular groove (56), the rectangular groove (54) and the installation cavity (51) are interconnected.

6. A composite insulator according to claim 5, characterized in that: A T-shaped rod (52) is arranged inside the installation cavity (51), and one end of the T-shaped rod (52) passes through the rectangular groove (54) and is fixedly connected to a rectangular buckle (55), and the rectangular buckle (55) and the rectangular groove (54) are staggered with each other, and the other end of the T-shaped rod (52) is rotatably connected to a tension spring (53), and one end of the tension spring (53) is fixedly connected to the surface of the installation cavity (51).

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