A pull rod for vacuum circuit breaker

Abstract

The utility model discloses a kind of pull rod for vacuum circuit breaker, including insulating rod, and nut and guide rod respectively arranged at the both ends of insulating rod, guide rod includes fixed guide rod and movable guide rod, one end of fixed guide rod is connected with insulating rod, another end of fixed guide rod is provided with connecting screw hole, one end of movable guide rod is equipped with screw rod compatible with connecting screw hole, the outside of movable guide rod is integrally formed with connecting sleeve, multiple fixed screw holes are equidistantly penetrated and provided on the outside of connecting sleeve, the utility model is connected screw hole and screw rod by being set, so that pull rod length is adjustable, so different models of vacuum circuit breaker can be adapted, improve its adaptability, connecting sleeve can be set simultaneously and bear part of force, to improve structural strength, and by setting internal hexagon screw and fixed screw hole, prevent rotating between movable guide rod and fixed guide rod in use process, to ensure the reliability of structure.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breaker technology, specifically to a pull rod for a vacuum circuit breaker. Background Technology

[0002] The pull rod in a vacuum circuit breaker is the core component of the transmission mechanism. It is responsible for accurately transmitting the output force of the operating mechanism to the moving contact of the vacuum interrupter, so as to realize the opening and closing operations.

[0003] The length of the existing tie rod is usually not adjustable. However, different models of vacuum circuit breakers require different tie rod lengths, so it cannot be adapted to different models of vacuum circuit breakers and has poor adaptability. Utility Model Content

[0004] The purpose of this invention is to provide a tie rod for a vacuum circuit breaker to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pull rod for a vacuum circuit breaker, comprising an insulating rod, and nuts and guide rods respectively disposed at both ends of the insulating rod. The guide rod includes a fixed guide rod and a movable guide rod. One end of the fixed guide rod is connected to the insulating rod, and the other end of the fixed guide rod has a connecting screw hole. One end of the movable guide rod is provided with a screw adapted to the connecting screw hole. A connecting sleeve is integrally formed on the outer side of the movable guide rod. Multiple fixed screw holes are equidistantly provided along the circumference on the outer side of the connecting sleeve, and each of the multiple fixed screw holes is threaded with an internal hexagon screw.

[0006] In a preferred embodiment of this utility model, the screw is located inside the connecting sleeve, and the inner wall of the connecting sleeve is in close contact with the outer side of the fixed guide rod.

[0007] As a preferred embodiment of this utility model, the outer side of the insulating rod is provided with multiple insulating skirts at equal intervals.

[0008] As a preferred embodiment of this utility model, one end of the movable guide rod is provided with an oblong hole.

[0009] As a preferred embodiment of this utility model, both the nut and the outer side of the fixed guide rod are provided with recesses.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the connection screw hole and screw rod of this utility model make the length of the pull rod adjustable, so as to adapt to different models of vacuum circuit breakers and improve its adaptability. At the same time, the connection sleeve can bear part of the force to improve the structural strength. Furthermore, the internal hexagon screw and the fixed screw hole prevent the rotation between the movable guide rod and the fixed guide rod during use, so as to ensure the reliability of the structure. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This utility model Figure 2 Exploded view;

[0013] Figure 3 This is a cross-sectional view of the present invention;

[0014] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0015] Figure 5 This is a schematic diagram of the structure of the movable guide rod of this utility model.

[0016] In the diagram: 1. Insulating rod; 2. Guide rod; 21. Fixed guide rod; 22. Movable guide rod; 3. Nut; 4. Recess; 5. Connecting screw hole; 6. Fixing screw hole; 7. Socket head screw; 8. Waist-shaped hole; 9. Screw; 10. Connecting sleeve; 11. Insulating skirt. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1 to 5This utility model provides a technical solution: a pull rod for a vacuum circuit breaker, including an insulating rod 1, and nuts 3 and guide rods 2 respectively disposed at both ends of the insulating rod 1. The insulating rod 1 is cast and formed on the outside of the nuts 3 and the fixed guide rod 21. The nuts 3 are used to connect with the vacuum interrupter, and the guide rods 2 are used to connect with the operating mechanism. The guide rod 2 includes a fixed guide rod 21 and a movable guide rod 22. The fixed guide rod 21, the movable guide rod 22, the connecting sleeve 10, and the screw 9 are all made of alloy steel to ensure sufficient strength and prevent deformation during use. One end of the fixed guide rod 21 is connected to the insulating rod 1, and the other end of the fixed guide rod 21 has a connecting screw hole 5. One end of the movable guide rod 22 has a corresponding connecting screw hole 5. The screw 9 is threadedly connected to the connecting screw hole 5. By rotating the screw 9, the distance between the movable guide rod 22 and the fixed guide rod 21 can be adjusted, thereby adjusting the length of the guide rod 2 to adapt to different models of vacuum circuit breakers. The outer side of the movable guide rod 22 is integrally formed with a connecting sleeve 10. During use, the connecting sleeve 10 can withstand part of the force, thus improving the structural strength. Multiple fixing screw holes 6 are equidistantly opened along the circumference on the outer side of the connecting sleeve 10. The interior of each fixing screw hole 6 is threaded with an internal hexagon screw 7. The internal hexagon screw 7 is used to abut against the fixed guide rod 21 to prevent rotation between the movable guide rod 22 and the fixed guide rod 21 during use, thus ensuring the reliability of the structure.

[0019] The screw 9 is located inside the connecting sleeve 10, and the inner wall of the connecting sleeve 10 is tightly attached to the outer side of the fixed guide rod 21, so that there will be no shaking between the connecting sleeve 10 and the fixed guide rod 21, ensuring a firm connection.

[0020] The insulating rod 1 has multiple insulating skirts 11 evenly spaced on its outer side. The insulating skirts 11 can extend the creepage distance, thereby enhancing the insulation performance of the insulating rod 1. The insulating rod 1 and the insulating skirts 11 are integrally molded structures, and both the insulating rod 1 and the insulating skirts 11 are made of epoxy resin.

[0021] One end of the movable guide rod 22 is provided with an oblong hole 8, which facilitates the connection between the movable guide rod 22 and the operating mechanism.

[0022] The nut 3 and the fixed guide rod 21 are both provided with a recess 4 on their outer sides, which makes the connection between the nut 3, the fixed guide rod 21 and the insulating rod 1 more secure.

[0023] Specifically, when the length needs to be adjusted, rotate the movable guide rod 22. The movable guide rod 22 drives the screw 9 to rotate. Since the screw 9 is threadedly connected to the connecting screw hole 5, the movable guide rod 22 moves. After adjusting to the appropriate length, use an Allen wrench to tighten the Allen screw 7 so that the Allen screw 7 abuts against the fixed guide rod 21, making the connecting sleeve 10 unable to rotate. This prevents both the movable guide rod 22 and the screw 9 from rotating during use, thus ensuring the reliability of the structure. At this point, the length adjustment is complete. Then, the nut 3 can be connected to the vacuum interrupter, and one end of the movable guide rod 22 can be connected to the operating mechanism for use.

[0024] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pull rod for a vacuum circuit breaker, comprising an insulating rod (1), and nuts (3) and guide rods (2) respectively disposed at both ends of the insulating rod (1), characterized in that: The guide rod (2) includes a fixed guide rod (21) and a movable guide rod (22). One end of the fixed guide rod (21) is connected to the insulating rod (1), and the other end of the fixed guide rod (21) is provided with a connecting screw hole (5). One end of the movable guide rod (22) is provided with a screw (9) that is compatible with the connecting screw hole (5). A connecting sleeve (10) is integrally formed on the outer side of the movable guide rod (22). Multiple fixed screw holes (6) are equidistantly provided on the outer side of the connecting sleeve (10) along the circumferential direction. All of the multiple fixed screw holes (6) are threaded with internal hexagon screws (7).

2. The pull rod for a vacuum circuit breaker according to claim 1, characterized in that: The screw (9) is located inside the connecting sleeve (10), and the inner wall of the connecting sleeve (10) is close to the outer side of the fixed guide rod (21).

3. A tie rod for a vacuum circuit breaker according to claim 1, characterized in that: Multiple insulating skirts (11) are provided at equal intervals on the outer side of the insulating rod (1).

4. A tie rod for a vacuum circuit breaker according to claim 1, characterized in that: One end of the movable guide rod (22) is provided with a waist-shaped hole (8).

5. A tie rod for a vacuum circuit breaker according to claim 1, characterized in that: The nut (3) and the outer side of the fixed guide rod (21) are both provided with recesses (4).

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