Insulation support composite insulator

Abstract

An insulation support composite insulator comprises a core rod, an upper gold piece, a lower gold piece and an umbrella skirt protective sleeve, the upper gold piece comprises a first cylindrical body and a connecting platform formed by extending one end of the first cylindrical body outwards, the first cylindrical body is provided with a first blind hole, the connecting platform is provided with a plurality of first connecting holes, and the first blind hole is provided with a plurality of second blind holes. The lower gold piece comprises a second cylindrical body and a U-shaped connector, the second cylindrical body is provided with a second blind hole, the lower portion of the U-shaped connector is provided with two second connecting holes, the upper portion of the U-shaped connector is provided with two third connecting holes, and the first blind hole of the first cylindrical body of the upper gold piece is connected to the first end of the core rod in a pressing mode. A second blind hole of a second cylindrical body of the lower gold piece is connected to the second end of the core rod in a pressing mode. The two ends of the core rod are connected with the upper gold piece and the lower gold piece in a support type compression joint mode, so that the connection is firmer, and the mechanical strength is higher; and the connection mode between the lower gold piece and other pieces is simpler, and disassembly and assembly are more convenient.

Description

Technical Field

[0001] The utility model relates to the field of insulators, in particular to an insulating support composite insulator. Background Art

[0002] The insulating support composite insulator is an important component widely used in the power transmission and distribution system. It is usually a multi-insulation structure composed of continuous layers of different insulating materials, and is a new type of safety insulating material used to replace traditional insulators and other electrical insulating devices.

[0003] In the prior art, the insulating support composite insulator usually consists of a structural layer, an intermediate insulating layer and a surface insulating layer. The structural layer is usually metal, the intermediate insulating layer is a core rod, and the surface insulating layer is a petticoat protection sleeve. The two ends of the core rod are connected to the metal by means of cement bonding, and the petticoat protection sleeve is sleeved outside the core rod and the metal part.

[0004] In the actual use process of the above-mentioned structure in the prior art, the following problems exist: First, the two ends of the core rod are connected to the metal by means of cement bonding, and the mechanical strength is poor. Especially after a period of use, the cement bonding is easy to become disjointed, resulting in the separation of the core rod and the metal part, leading to the occurrence of safety accidents; Second, the connection method between the metal part, especially the lower metal part and the corresponding mounting part is complex and not convenient to disassemble, which is not conducive to improving the installation and disassembly efficiency. Third, in the process of installation of the existing structure, the upper metal part is easy to be incorrectly installed due to the reversal of the product position and direction during on-site installation, and it is difficult to be installed in place at one time, thus affecting the work efficiency. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides an insulating support composite insulator with better mechanical strength between the two ends of the core rod and the metal, a more ingenious and simple connection method between the lower metal part and the corresponding mounting part, and easier correct installation of the upper metal part during on-site installation.

[0006] To achieve the above object, the utility model adopts the following technical solutions: An insulating support composite insulator includes a core rod, an upper metal fitting, a lower metal fitting, and an umbrella skirt protective sleeve. The upper metal fitting includes a first cylindrical body and a connecting platform extending outward from one end of the first cylindrical body. The first cylindrical body is provided with a first blind hole matching the first end of the core rod. The end of the connecting platform away from the first cylindrical body is provided with a plurality of first connecting holes. The lower metal fitting includes a second cylindrical body and a U-shaped connecting head extending outward from one end of the second cylindrical body. The second cylindrical body is provided with a second blind hole matching the second end of the core rod. The lower part of the U-shaped connecting head is provided with two laterally connected second connecting holes, and the upper part of the U-shaped connecting head is provided with two laterally connected third connecting holes. The first blind hole of the first cylindrical body of the upper metal fitting is press-fitted on the first end of the core rod, and the second blind hole of the second cylindrical body of the lower metal fitting is press-fitted on the second end of the core rod.

[0007] As an improvement of the utility model, the value range of the length L of the core rod is 150 mm ≤ L ≤ 180 mm.

[0008] As an improvement of the utility model, there are four first connecting holes, which are respectively arranged in pairs at both ends of the connecting platform.

[0009] As an improvement of the utility model, a misplacement positioning hole is provided on the connecting platform.

[0010] As an improvement of the utility model, the third connecting hole on the U-shaped connecting head is used for connecting the lower metal fitting with other parts through a pin.

[0011] As an improvement of the utility model, the umbrella skirt protective sleeve at least wraps around the connection between the core rod and the upper metal fitting, and the connection between the lower metal fitting and the core rod.

[0012] As an improvement of the utility model, the first end of the core rod is arranged in a stepped shape matching the first blind hole, and the second end of the core rod is arranged in a stepped shape matching the second blind hole.

[0013] As an improvement of the utility model, the material of the core rod is a glass fiber drawing rod.

[0014] As an improvement of the utility model, the umbrella skirt protective sleeve is made of high molecular materials such as silicone rubber.

[0015] The utility model has the following beneficial effects: since the utility model comprises a mandrel, an upper metal part, a lower metal part, and an umbrella skirt protective sleeve, the upper metal part includes a first cylindrical body and a connecting platform extending outward from one end of the first cylindrical body. The first cylindrical body is provided with a first blind hole matching the first end of the mandrel, and several first connecting holes are provided at one end of the connecting platform away from the first cylindrical body. The lower metal part includes a second cylindrical body and a U-shaped connecting head extending outward from one end of the second cylindrical body. The second cylindrical body is provided with a second blind hole matching the second end of the mandrel. Two laterally communicating second connecting holes are provided at the lower part of the U-shaped connecting head, and two laterally communicating third connecting holes are provided at the upper part of the U-shaped connecting head. The first blind hole of the first cylindrical body of the upper metal part is press-fitted on the first end of the mandrel, and the second blind hole of the second cylindrical body of the lower metal part is press-fitted on the second end of the mandrel. In the utility model, the connection mode of press-fitting the two ends of the mandrel with the upper metal part and the lower metal part in a bracket manner makes the connection more firm and the mechanical strength stronger. Secondly, in the utility model, the lower metal part is connected to other parts through the U-shaped connecting head, the second connecting holes and the third connecting holes thereon, and inserting a bolt. Compared with the prior art, this connection mode is simpler and more convenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a front view schematic diagram of an embodiment of the utility model.

[0017] Figure 2 is Figure 1 longitudinal sectional schematic diagram of.

[0018] Figure 3 is Figure 1 bottom view schematic diagram of.

[0019] Figure 4 is Figure 1 partial sectional schematic diagram of the upper metal part in.

[0020] Figure 5 is Figure 1 side view schematic diagram of the upper metal part in.

[0021] Figure 6 is Figure 1 top view schematic diagram of the upper metal part in. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Figures 1 to 6 Disclosed is an implementation manner of an insulating support composite insulator. An insulating support composite insulator includes a core rod 1, an upper metal fitting 2, a lower metal fitting 3, and a petticoat protection sleeve 4. Specifically, in this embodiment, the upper metal fitting 2 is located at the first end of the core rod 1, and the lower metal fitting 3 is located at the second end of the core rod 1, so that the core rod 1, the upper metal fitting 2, and the lower metal fitting 3 are connected as a whole. The petticoat protection sleeve 4 is sleeved outside the core rod 1, the upper metal fitting 2, and the lower metal fitting 3. In this embodiment, specifically, the upper metal fitting 2 includes a first cylindrical body 21 and a connecting platform 22 extending outward from one end of the first cylindrical body 21. The first cylindrical body 21 is provided with a first blind hole 23 matching the first end of the core rod 1. The end of the connecting platform 22 far from the first cylindrical body 21 is provided with a plurality of first connecting holes 221. Specifically, in this embodiment, the number of the first connecting holes 221 is 4, and they are arranged in pairs at both ends of the connecting platform 22 for connecting the upper metal fitting 2 with other parts. The lower metal fitting 3 includes a second cylindrical body 31 and a U-shaped connecting head 32 extending outward from one end of the second cylindrical body 31. The second cylindrical body 31 is provided with a second blind hole 33 matching the second end of the core rod 1. The lower part of the U-shaped connecting head 32 is provided with two laterally connected second connecting holes 321, and the upper part of the U-shaped connecting head 32 is provided with two laterally connected third connecting holes 322. The first blind hole 23 of the first cylindrical body 21 of the upper metal fitting 2 is press-fitted at the first end of the core rod 1, and the second blind hole 33 of the second cylindrical body 31 of the lower metal fitting 3 is press-fitted at the second end of the core rod 1. In the present invention, the connection method of press-fitting the two ends of the core rod 1 with the upper metal fitting 2 and the lower metal fitting 3 in a support manner makes the connection more firm and the mechanical strength stronger. Secondly, in the present invention, the lower metal fitting 3 is connected with other parts through the U-shaped connecting head, the second connecting holes 321 and the third connecting holes 322 thereon, and by inserting a pin (not shown in the figure). Compared with the prior art, this connection method is simpler and more convenient for disassembly and assembly.

[0024] In the present invention, preferably, the value range of the length L of the core rod 1 is 150 mm ≤ L ≤ 180 mm. The advantage of such a design is that, compared with the prior art, the length of the core rod 1 of the present invention is shorter and the mechanical length is better.

[0025] In the present utility model, preferably, misplacement positioning holes 222 are provided on the connection platform 22. The advantage of such a structure is that during the installation process, the upper metal part 2 is first positioned through the misplacement positioning holes 222 during on-site installation, thereby preventing incorrect installation due to the reversal of the product's position and direction, so as to achieve one-time installation in place, thereby improving work efficiency.

[0026] In the present utility model, preferably, the third connection hole 322 on the U-shaped connection head 32 is used for the lower metal part 3 and other parts to be connected by a pin.

[0027] In the present utility model, preferably, the umbrella skirt protective sleeve 4 wraps at least the connection between the core rod 1 and the upper metal part 2, and the connection between the lower metal part 3 and the core rod 1. The umbrella skirt protective sleeve 4 is used to increase the creepage distance.

[0028] In the present utility model, preferably, the first end of the core rod 1 is provided in a stepped shape matching the first blind hole 23, and the second end of the core rod 1 is provided in a stepped shape matching the second blind hole 33.

[0029] In the present utility model, preferably, the material of the core rod 1 is a glass fiber drawing rod.

[0030] In the present utility model, preferably, the umbrella skirt protective sleeve 4 is made of a polymer material such as silicone rubber and has excellent insulation performance; in addition, the polymer material has excellent flexibility, so that the silicone rubber can play a buffering role when the insulator is impacted or vibrated, thereby protecting the insulator from damage.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An insulating support composite insulator, characterized in that: It includes a mandrel (1), an upper metal part (2), a lower metal part (3), and an umbrella skirt protective sleeve (4). The upper metal part (2) includes a first cylindrical body (21) and a connecting platform (22) extending outward from one end of the first cylindrical body (21). The first cylindrical body (21) is provided with a first blind hole (23) matching the first end of the mandrel (1). The end of the connecting platform (22) far from the first cylindrical body (21) is provided with a plurality of first connecting holes (221). The lower metal part (3) includes a second cylindrical body (31) and a U-shaped connecting head (32) extending outward from one end of the second cylindrical body (31). The second cylindrical body (31) is provided with a second blind hole (33) matching the second end of the mandrel (1). The lower part of the U-shaped connecting head (32) is provided with two laterally connected second connecting holes (321), and the upper part of the U-shaped connecting head (32) is provided with two laterally connected third connecting holes (322). The first blind hole (23) of the first cylindrical body (21) of the upper metal part (2) is crimped on the first end of the mandrel (1), and the second blind hole (33) of the second cylindrical body (31) of the lower metal part (3) is crimped on the second end of the mandrel (1).

2. The insulating support composite insulator according to claim 1, characterized in that: The value range of the length L of the mandrel (1) is 150mm ≤ L ≤ 180mm.

3. The insulating support composite insulator according to claim 1, characterized in that: There are four first connecting holes (221), which are arranged in pairs at both ends of the connecting platform (22).

4. The insulating support composite insulator according to claim 1, characterized in that: The connecting platform (22) is provided with a misplacement positioning hole (222).

5. The insulating support composite insulator according to claim 1, characterized in that: The umbrella skirt protective sleeve (4) at least wraps around the connection between the mandrel (1) and the upper metal part (2), and the connection between the lower metal part (3) and the mandrel (1).

6. The insulating support composite insulator according to claim 1, characterized in that: The first end of the mandrel (1) is set to a stepped shape matching the first blind hole (23), and the second end of the mandrel (1) is set to a stepped shape matching the second blind hole (33).

7. The insulating support composite insulator according to claim 1, characterized in that: The material of the mandrel (1) is a glass fiber drawing rod.

8. The composite insulator of an insulating support according to claim 1, characterized in that: The umbrella skirt protective sleeve (4) is made of a polymer material such as silicone rubber.

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