Rod-shaped suspension type porcelain insulator with locking pin

Abstract

The utility model discloses a rod-shaped suspension type porcelain insulator with a locking pin, which relates to the technical field of rod-shaped suspension type porcelain insulators and comprises an insulating core rod, an iron cap is glued on the top of the insulating core rod through an adhesive, a steel foot is glued on the bottom of the insulating core rod through an adhesive, a clamping groove is arranged on the top of the iron cap, and the locking pin is arranged in the clamping groove. Sliding grooves are formed in the inner walls of the two sides of the clamping groove, locking pin bodies are arranged in the sliding grooves in a sliding mode, springs are arranged in the sliding grooves, one ends of the springs are fixedly connected to the locking pin bodies, the other ends of the springs are fixedly connected to the inner walls of the sliding grooves, and oblique notches are formed in the ends, away from the springs, of the locking pin bodies. According to the rod-shaped suspension type porcelain insulator with the locking pin, the steel foot is limited by arranging the sliding groove, the locking pin body, the spring and other structures, so that the two rod-shaped suspension type porcelain insulators are prevented from slipping and being separated, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rod-shaped suspension porcelain insulators, in particular to a rod-shaped suspension porcelain insulator with a locking pin. Background Art

[0002] Suspension insulators are generally made of insulating parts (such as porcelain parts, glass parts) and metal accessories (such as steel feet, iron caps, flanges, etc.) glued together or mechanically clamped together. Insulators are widely used in power systems. They are generally external insulation and work under atmospheric conditions. Overhead transmission lines, busbars of power plants and substations, and external live conductors of various electrical equipment must be supported by insulators and insulated from the earth (or grounding objects) or other conductors with potential differences.

[0003] UHV transmission lines are often erected in cold regions or areas with severe pollution. The suspension strings in the lines often use rod-shaped suspension porcelain insulators to connect the iron tower and the conductors and play the role of suspending the conductors. In the prior art, the iron caps of the rod-shaped suspension porcelain insulators lack a limiting structure. During the assembly of the suspension string, the construction workers need to pay attention to and prevent the adjacent two rod-shaped suspension porcelain insulators from slipping and separating, which increases the work intensity of the construction workers and reduces work efficiency.

[0004] Therefore, it is necessary to propose a rod-shaped suspension porcelain insulator with a locking pin to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a rod-shaped suspension porcelain insulator with a locking pin, so as to solve the problem in the prior art that, due to the lack of a limiting structure in the iron cap of the rod-shaped suspension porcelain insulator, construction workers need to pay attention to and prevent the two adjacent rod-shaped suspension porcelain insulators from slipping and separating during the suspension string assembly process, which increases the work intensity of the construction workers and reduces the work efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rod-shaped suspension porcelain insulator with a locking pin, comprising an insulating core rod, an iron cap is glued to the top of the insulating core rod by adhesive, a steel foot is glued to the bottom of the insulating core rod by adhesive, a card slot is provided on the top of the iron cap, and sliding grooves are provided on the inner walls on both sides of the card slot, a locking pin body is slidably arranged inside the sliding groove, a spring is arranged inside the sliding groove, one end of the spring is fixedly connected to the locking pin body, and the other end of the spring is fixedly connected to the inner wall of the sliding groove.

[0007] Preferably, an oblique cut is formed at one end of the locking pin body away from the spring.

[0008] Preferably, annular grooves are provided at both upper and lower ends of the outer wall of the insulating core rod.

[0009] Preferably, a first groove is formed at the top of the insulating core rod, a second groove is formed at the bottom of the first groove, a protrusion is integrally formed inside the iron cap, an elastic strip is fixedly connected to the outer wall of the protrusion, and the top of the elastic strip abuts against the inner wall of the second groove.

[0010] Preferably, the elastic strips are provided in plurality, and the plurality of elastic strips are evenly distributed around the protrusion.

[0011] Preferably, a thread groove is formed at the bottom of the insulating core rod, and a thread rod is integrally formed on the steel foot, and the thread rod cooperates with the thread groove.

[0012] Preferably, an umbrella disc is fixedly connected to the outer wall of the insulating core rod, and the umbrella disc is provided in plurality.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model sets the structures such as the slide groove, the locking pin body and the spring to limit the steel foot, thereby preventing the two rod-shaped suspension porcelain insulators from slipping and separating, thereby improving the working efficiency;

[0015] 2. The adhesive is filled inside the ring groove and solidified, so that the rod-shaped suspension porcelain insulator can fully utilize the wedge effect when it is pulled to ensure the tensile strength;

[0016] 3. By providing structures such as a convex block and an elastic strip, the top end of the elastic strip abuts against the inner wall of the second groove, so that the iron cap and the insulating core rod are not easily separated;

[0017] 4. By setting the threaded rod and the threaded groove, the threaded rod is screwed into the inside of the threaded groove, so that the steel foot and the insulating core rod are not easy to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the structure of a rod-shaped suspension porcelain insulator with a locking pin.

[0019] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a rod-shaped suspension porcelain insulator with a locking pin.

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0021] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0022] Figure 5 For this utility model Figure 3 Enlarged schematic diagram of the structure at point C in the middle.

[0023] Figure 6 It is a schematic diagram of the structure of the slideway and locking pin body of the utility model.

[0024] In the figure: 1. insulating core rod; 2. umbrella plate; 3. iron cap; 4. steel foot; 5. slide groove; 6. locking pin body; 7. spring; 8. oblique cut; 9. ring groove; 10. protrusion; 11. first groove; 12. second groove; 13. elastic strip; 14. slot; 15. threaded groove; 16. threaded rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides Figure 1 to Figure 6 A rod-shaped suspension porcelain insulator with a locking pin shown in the figure comprises an insulating core rod 1, an outer wall of which is fixedly connected an umbrella disk 2, wherein the umbrella disk 2 is arranged in plurality.

[0027] The top of the insulating core rod 1 is glued with an iron cap 3 by adhesive, and a slot 14 is provided on the top of the iron cap 3. The bottom of the insulating core rod 1 is glued with a steel leg 4 by adhesive, and the adhesive may be, but is not limited to, high-strength silicate cement adhesive. When two adjacent rod-shaped suspension porcelain insulators are butt-jointed, the steel leg 4 of one rod-shaped suspension porcelain insulator is clamped in the slot 14 in the iron cap 3 of the other rod-shaped suspension porcelain insulator, thereby completing the butt-jointing of multiple rod-shaped suspension porcelain insulators to form a suspension string.

[0028] Considering that the iron cap 3 of the existing rod-shaped suspension porcelain insulator lacks a limiting structure, during the assembly process of the suspension string, the construction personnel need to pay attention to and prevent the adjacent two rod-shaped suspension porcelain insulators from slipping off and separating, that is, the steel foot 4 slips out of the slot 14, which increases the work intensity of the construction personnel and reduces the work efficiency. In order to prevent the steel foot 4 from slipping off at will, a slide groove 5 is provided on the inner wall of the slot 14 on both sides, and a locking pin body 6 is provided inside the slide groove 5 for sliding. A spring 7 is provided inside the slide groove 5, one end of the spring 7 is fixedly connected to the locking pin body 6, and the other end of the spring 7 is fixedly connected to the inner wall of the slide groove 5. The locking pin body 6 is recovered to the inside of the slide groove 5 and squeezes the spring 7, so that the steel foot 4 is clamped in the slot 14; and the reset elastic force of the spring 7 resets the locking pin body 6, limits the steel foot 4, prevents the two rod-shaped suspension porcelain insulators from slipping off and separating, and improves the work efficiency.

[0029] By arranging structures such as the slide groove 5, the locking pin body 6 and the spring 7, the steel foot 4 is limited to prevent the two rod-shaped suspension porcelain insulators from slipping and separating, thereby improving work efficiency.

[0030] In order to facilitate the steel foot 4 to be clamped in the clamping slot 14, an oblique cut 8 is provided at one end of the locking pin body 6 away from the spring 7. Specifically, the steel foot 4 abuts against the oblique cut 8 and presses toward the inside of the clamping slot 14, so that the locking pin body 6 is retracted into the inside of the slide slot 5, so that the steel foot 4 is clamped in the clamping slot 14.

[0031] Annular grooves 9 are provided at both upper and lower ends of the outer wall of the insulating core rod 1. The two annular grooves 9 are respectively located in the iron cap 3 and the steel foot 4. The adhesive is filled in the annular grooves 9 and solidified, so that the rod-shaped suspension porcelain insulator can fully utilize the wedge effect when being pulled to ensure the tensile strength.

[0032] In order to improve the connection stability between the insulating core rod 1 and the iron cap 3, a first groove 11 is opened at the top of the insulating core rod 1, and a second groove 12 is opened at the bottom of the first groove 11. A protrusion 10 is integrally formed inside the iron cap 3, and an elastic strip 13 is fixedly connected to the outer wall of the protrusion 10. The elastic strip 13 is provided in plurality, and the plurality of elastic strips 13 are evenly distributed around the protrusion 10, and the top of the elastic strip 13 abuts against the inner wall of the second groove 12.

[0033] When the insulating core rod 1 and the iron cap 3 are assembled, the protrusion 10 is first inserted into the first groove 11. When inside the first groove 11, the elastic strip 13 fits against the outer wall of the protrusion 10 and then enters the second groove 12. The elastic strip 13 opens outward due to its own elastic force, and its top end abuts against the inner wall of the second groove 12, making it difficult for the iron cap 3 to be separated from the insulating core rod 1.

[0034] When the protrusion 10 abuts against the inner wall of the second groove 12 , there is a certain gap between the top of the insulating core rod 1 and the inner wall of the iron cap 3 , allowing the adhesive to penetrate into the first groove 11 and the second groove 12 and solidify.

[0035] In order to improve the insulation, a thread groove 15 is provided at the bottom of the core rod 1 , and a threaded rod 16 is integrally formed on the steel foot 4 , and the threaded rod 16 cooperates with the thread groove 15 .

[0036] When the insulating core rod 1 is assembled with the steel foot 4 , the steel foot 4 is rotated, and the threaded rod 16 is screwed into the thread groove 15 , so that the steel foot 4 and the insulating core rod 1 are not easily separated.

Claims

1. A rod-shaped suspension porcelain insulator with a locking pin, comprising an insulating core rod (1), characterized in that: The top of the insulating core rod (1) is glued with an iron cap (3) by adhesive, and the bottom of the insulating core rod (1) is glued with a steel foot (4) by adhesive. The top of the iron cap (3) is provided with a slot (14), and the inner walls on both sides of the slot (14) are provided with a slide groove (5). A locking pin body (6) is slidably arranged inside the slide groove (5), and a spring (7) is arranged inside the slide groove (5), one end of the spring (7) is fixedly connected to the locking pin body (6), and the other end of the spring (7) is fixedly connected to the inner wall of the slide groove (5).

2. A rod-shaped suspension porcelain insulator with a locking pin according to claim 1, characterized in that: An oblique cutout (8) is formed at one end of the locking pin body (6) away from the spring (7).

3. A rod-shaped suspension porcelain insulator with a locking pin according to claim 1, characterized in that: Annular grooves (9) are provided at both upper and lower ends of the outer wall of the insulating core rod (1).

4. A rod-shaped suspension porcelain insulator with a locking pin according to claim 1, characterized in that: The insulating core rod (1) is provided with a first groove (11) at the top, and a second groove (12) is provided at the bottom of the first groove (11). A protrusion (10) is integrally formed inside the iron cap (3), and an elastic strip (13) is fixedly connected to the outer wall of the protrusion (10), and the top end of the elastic strip (13) abuts against the inner wall of the second groove (12).

5. A rod-shaped suspension porcelain insulator with a locking pin according to claim 4, characterized in that: The elastic strips (13) are arranged in plurality, and the plurality of elastic strips (13) are evenly distributed around the protrusion (10).

6. The rod-shaped suspension porcelain insulator with a locking pin according to claim 1, characterized in that: The bottom of the insulating core rod (1) is provided with a thread groove (15), and the steel foot (4) is integrally formed with a thread rod (16), and the thread rod (16) cooperates with the thread groove (15).

7. The rod-shaped suspension porcelain insulator with a locking pin according to claim 1, characterized in that: An umbrella disc (2) is fixedly connected to the outer wall of the insulating core rod (1), and a plurality of umbrella discs (2) are provided.

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