Disc-shaped suspension insulator

Abstract

The utility model relates to the technical field of insulators, in particular to a disc-shaped suspension insulator. Comprising an insulator, the upper end of the insulator is provided with an iron cap, the iron cap is provided with a socket groove and an inverted T-shaped groove, the insulator is further provided with a steel foot extending downwards from the bottom face of the insulator, the lower end of the steel foot is provided with a ball head, the pin comprises a back plate, the two ends of the back plate are provided with inner folding plates, and the two ends of the back plate are provided with inner folding plates. Supporting plates are arranged at the other ends of the two inner folding plates, the distance between the two supporting plates is smaller than the diameter of the projection of the ball head on the horizontal plane, guide plates are arranged at the other ends of the two supporting plates, and fixing plates are arranged at the other ends of the two guide plates; the distance between the two fixing plates is larger than the diameter of the projection of the ball head on the horizontal plane. According to the utility model, the pin can be placed in the inverted T-shaped groove before connection between disc-shaped suspension insulators, which is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of insulators, in particular to a disc suspension insulator. Background Art

[0002] The disc suspension insulator is a commonly used insulator. When in use, multiple disc suspension insulators are often used to form an insulator string. The structure of the existing disc insulator is as shown in the patent with the application number 201310616519.8 and the name "Disc Suspension Insulator". There is a central steel foot between the umbrella skirt and the top part of the insulating part. The outside of the head of the insulating part is covered with an iron cap, and an inverted T-shaped groove and a bowl head groove are arranged on the iron cap. A ball head is arranged at the lower end of the steel foot. The ball head can reach below the bowl head groove through the inverted T-shaped groove, and then the ball head is pulled upward to make it enter the bowl head groove. At this time, the lower end of the ball head is at a certain distance from the bottom surface of the inverted T-shaped groove. Then, a type pin needs to be inserted between the lower end of the ball head and the bottom surface of the inverted T-shaped groove so that the ball head cannot drop significantly and thus cannot escape from the bowl head groove. The structure of the existing type pin is as shown in the patent with the application number 201320394097.X and the name "Bowl Head Hanging Plate". Its overall shape is approximately M-shaped, so it can only be inserted below the ball head after the ball head enters the bowl head groove. When multiple disc insulators are connected together, the distance between adjacent two disc insulators is relatively small, which brings inconvenience to inserting the type pin. The present application provides a disc suspension insulator, and its type pin can be first placed in the inverted T-shaped groove, and then the ball head is installed in the bowl head groove through the inverted T-shaped groove, which is more convenient. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a disc suspension insulator aiming at the above-mentioned existing technical deficiencies.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a disc suspension insulator, including an insulator, an iron cap is arranged at the upper end of the insulator, a bowl head groove and an inverted T-shaped groove are arranged on the iron cap, a steel foot extending downward from the bottom surface is further arranged on the insulator, a ball head is arranged at the lower end of the steel foot, and a type pin is further included. The type pin includes a back plate, inner folding plates are arranged at both ends of the back plate, support plates are arranged at the other ends of the two inner folding plates, the distance between the two support plates is smaller than the diameter of the projection of the ball head on the horizontal plane, guide plates are arranged at the other ends of the two support plates, fixed plates are arranged at the other ends of the two guide plates, and the distance between the two fixed plates is larger than the diameter of the projection of the ball head on the horizontal plane.

[0005] Further, a stud is arranged on one side of the back plate away from the support plate, a through hole is arranged on the iron cap, and the stud passes through the through hole and is connected with a nut.

[0006] Further, an outer extension plate is provided at one end of the fixing plate away from the back plate, and the distance between the outer ends of the two outer extension plates is greater than the width of the lower part of the inverted T-shaped groove.

[0007] Compared with the prior art, the utility model has the following advantages: 1. The pin includes a back plate, and inner folding plates, support plates, guide plates and fixing plates are sequentially arranged at both ends of the back plate, so that the pin can be placed in the inverted T-shaped groove before connecting the disc suspension insulators, which is more convenient; 2. A stud is arranged on one side of the back plate, and the stud passes through the through hole on the iron cap and is connected with a nut, so that the pin will not fall out of the inverted T-shaped groove. Description of the Drawings

[0008] Figure 1 It is a schematic structural diagram of a disc suspension insulator.

[0009] Figure 2 It is a schematic structural diagram of an insulator.

[0010] Figure 3 It is a schematic structural diagram of a pin.

[0011] Figure 4 It is a schematic diagram of the position of the pin in the inverted T-shaped groove.

[0012] In the figure: 1. Insulator; 2. Iron cap; 21. Bowl head groove; 22. Inverted T-shaped groove; 3. Pin; 31. Stud; 32. Back plate; 33. Inner folding plate; 34. Support plate; 35. Guide plate; 36. Fixing plate; 37. Outer extension plate; 38. Nut; 4. Steel foot. Detailed Embodiment

[0013] To make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the descriptions of known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the utility model.

[0014] Detailed Embodiment: In combination with Figures 1-4As shown in the figure, a disc suspension insulator includes an insulator 1. An iron cap 2 is provided at the upper end of the insulator 1. A bowl head groove 21 and an inverted T-shaped groove 22 are provided on the iron cap 2. A steel foot 4 extending downward from the bottom surface of the insulator 1 is also provided on the insulator 1. A ball head is provided at the lower end of the steel foot 4. The width of the upper part of the inverted T-shaped groove 22 is slightly larger than the diameter of the steel foot 4 and much smaller than the diameter of the projection of the ball head on the horizontal plane. The width of the lower part of the inverted T-shaped groove 22 is larger than the diameter of the projection of the ball head on the horizontal plane. The height of the wider part of the lower part of the inverted T-shaped groove 22 is slightly larger than the height of the ball head, so that the steel foot 4 can pass through the upper part of the inverted T-shaped groove 22 while the ball head passes through the lower part of the inverted T-shaped groove 22, so that the ball head can be located below the bowl head groove 21. It also includes a dowel pin 3. The dowel pin 3 has good elasticity. The dowel pin 3 includes a back plate 32. Inner folding plates 33 are provided at both ends of the back plate 32. The distance between the ends of the two inner folding plates 33 away from the back plate 32 is smaller than the length of the back plate 32. Support plates 34 are provided at the other ends of the two inner folding plates 33. The distance between the two support plates 34 is much smaller than the diameter of the projection of the ball head on the horizontal plane. The height of the support plate 34 is slightly smaller than the height of the wider part of the lower part of the inverted T-shaped groove 22. Guide plates 35 are provided at the other ends of the two support plates 34. The distance between the ends of the two guide plates 35 away from the support plates 34 is larger than the diameter of the projection of the ball head on the horizontal plane. Fixed plates 36 are provided at the other ends of the two guide plates 35. The distance between the two fixed plates 36 is larger than the diameter of the projection of the ball head on the horizontal plane and preferably fits against both sides of the lower part of the inverted T-shaped groove 22 respectively. An opening of the dowel pin 3 is formed between the two fixed plates 36. When in use, first place the dowel pin 3 in the wider part of the lower part of the inverted T-shaped groove 22 with its opening facing outward. When the ball head on one disc suspension insulator passes through the inverted T-shaped groove 22 on another disc suspension insulator located below it, the ball head can enter the opening of the dowel pin 3 in the inverted T-shaped groove 22, and can push the two guide plates 35 to both sides and also push the two support plates 34 outward so as to enter between them. Then pull the upper disc insulator upward so that the ball head enters the bowl head groove 21, and the inner ends of the fixed plates 36 and / or the outer ends of the guide plates 35 are located in the wider part of the lower part of the inverted T-shaped groove 22 and cannot rise. At this time, due to the elastic effect, the two support plates 34 reset and are located below the ball head. After that, the ball head cannot be disengaged from the bowl head groove 21. Since the dowel pin 3 can be placed in the inverted T-shaped groove 22 first and then the connection between the disc suspension insulators is carried out, it is more convenient.

[0015] Preferably, a stud 31 is provided on the side of the back plate 32 away from the support plate 34. A through hole is provided on the iron cap 2. The extending direction of the through hole is parallel to the extending direction of the inverted T-shaped groove 22. The stud 31 passes through the through hole and is connected to a nut 38, so that the dowel pin 3 will not fall out of the inverted T-shaped groove 22.

[0016] Preferably, an extension plate 37 is provided at one end of the fixing plate 36 away from the back plate 32. The distance between the outer ends of the two extension plates 37 is greater than the width of the lower part of the inverted T-shaped groove 22, which plays a blocking role. When the ball head contacts the guide plate 35, it is not easy to drive the guide plate 35 and the fixing plate 36 to move Figure 4 to the right in

[0017] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A disc-shaped suspension insulator, comprising an insulator (1), an iron cap (2) being provided at the upper end of the insulator (1), the iron cap (2) being provided with a bowl head groove (21) and an inverted T-shaped groove (22), the insulator (1) being further provided with a steel foot (4) extending downward from the bottom surface thereof, the lower end of the steel foot (4) being provided with a ball head, and further comprising a mold pin (3), characterized in that: The mold pin (3) comprises a back plate (32), both ends of the back plate (32) are provided with inner folding plates (33), the other ends of the two inner folding plates (33) are provided with support plates (34), the distance between the two support plates (34) is smaller than the diameter of the ball head projected on the horizontal plane, the other ends of the two support plates (34) are provided with guide plates (35), the other ends of the two guide plates (35) are provided with fixing plates (36), and the distance between the two fixing plates (36) is larger than the diameter of the ball head projected on the horizontal plane.

2. A disc-shaped suspension insulator according to claim 1, characterized in that: A stud (31) is provided on one side of the back plate (32) away from the support plate (34), and a through hole is provided on the iron cap (2). The stud (31) passes through the through hole and is connected to a nut (38).

3. A disc-shaped suspension insulator according to claim 1, characterized in that: An overhanging plate (37) is provided at one end of the fixing plate (36) away from the back plate (32), and the distance between the outer ends of the two overhanging plates (37) is greater than the width of the lower portion of the inverted T-shaped groove (22).

Images