Insulation pull rod for vacuum circuit breaker

Abstract

The utility model discloses an insulating pull rod for a vacuum circuit breaker, which comprises an insulating sleeve and a movable pull rod, and a plurality of insulating umbrella skirts are arranged on the outer side of the insulating sleeve at equal intervals; a fixed plate is fixed in the middle of an inner cavity of the insulation sleeve and divides the insulation sleeve into a left cavity and a right cavity, movable plates are slidably connected into the two cavities, movable pull rods are fixed to the outer sides of the movable plates, through holes are formed in the left side and the right side of the insulation sleeve, and the movable pull rods are slidably connected into the through holes in a matched mode. According to the insulating pull rod for the vacuum circuit breaker, the movable pull rod is arranged and matched with the movable plate and the compression spring, a good buffer effect can be achieved on the connector, the service life of the connector is prolonged, the movable pull rod and the connector are connected through threads, the position of the connector is convenient to adjust, and the practicability is high. Therefore, the device is suitable for vacuum circuit breakers with different distances, and is wider in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of insulating accessories of vacuum circuit breakers, in particular to an insulating pull rod for vacuum circuit breakers. Background Art

[0002] The insulating rod is a key component of the vacuum circuit breaker, which determines the breaking speed and breaking capacity of the vacuum circuit breaker. Most of the existing insulating rods are of fixed length, which are not suitable for breaking connections of different distances and have a narrow scope of application. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides an insulating pull rod for a vacuum circuit breaker. By arranging a movable pull rod, cooperating with a movable plate and a compression spring, it can play a good buffering role on the joint, thereby improving the service life of the joint. The movable pull rod and the joint are connected by a thread, which is convenient for adjusting the position of the joint to adapt to vacuum circuit breakers at different distances and has a wider range of use.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An insulating pull rod for a vacuum circuit breaker comprises an insulating sleeve and a movable pull rod, wherein a plurality of insulating sheds are equidistantly arranged on the outer side of the insulating sleeve; a fixed plate is fixed to the middle part of the inner cavity of the insulating sleeve, the fixed plate divides the insulating sleeve into two left and right chambers, both chambers are slidably connected with movable plates, movable pull rods are fixed to the outer side of the movable plates, through holes are provided on the left and right sides of the insulating sleeve, the movable pull rods are slidably connected in the through holes, compression springs are sleeved on the outer side of the movable pull rods, both ends of the compression springs are fixed to the outer side of the movable plate and the inner sides of the left and right ends of the insulating sleeve, threaded holes are provided on the outer ends of the movable pull rods, joints are screwed at the threaded holes, and pin holes are provided on the ends of the joints, by arranging a movable movable pull rod, cooperating with the movable plate and the compression spring, a good buffering effect can be played on the joints, thereby improving the service life of the joints, the movable pull rods and the joints are connected by threads, so that the position of the joints can be adjusted to adapt to vacuum circuit breakers of different distances, and the use range is wider.

[0006] Furthermore, a limiting bolt is threaded on the joint, and the limiting bolt is in contact with the end of the movable pull rod. By providing the limiting bolt, loosening of the joint and the movable pull rod can be prevented when used, thereby improving the stability of use.

[0007] Furthermore, at least three limit rails are provided in the two cavities at the left and right ends of the insulating sleeve. The limit rails are arranged in an equidistant array around the central axis of the insulating sleeve. The outer side of the movable plate is provided with a limit groove that is slidably connected to the limit rail. By setting the limit rail and providing the limit groove that is slidably connected to the limit rail on the outer side of the movable plate, axial rotation of the movable pull rod during use is avoided, thereby further improving the stability of use.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] 1. By setting a movable pull rod, cooperating with a movable plate and a compression spring, a good buffering effect can be played on the joint, thereby increasing the service life of the joint. The movable pull rod and the joint are connected by a thread, which is convenient for adjusting the position of the joint to adapt to vacuum circuit breakers at different distances and have a wider range of use.

[0010] 2. By setting a limit bolt, the joint is prevented from loosening with the movable pull rod when in use, thereby improving the stability of use. By setting a limit rail and opening a limit groove on the outer side of the movable plate that is slidably connected to the limit rail, axial rotation of the movable pull rod is avoided when in use, thereby further improving the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model.

[0012] In the figure: 1 insulating sleeve, 2 insulating umbrella skirt, 3 fixed plate, 4 movable plate, 5 movable pull rod, 6 compression spring, 7 threaded hole, 8 joint, 9 pin hole, 10 limit rail, 11 limit bolt. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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.

[0014] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0015] See attached Figure 1 As shown, an insulating pull rod for a vacuum circuit breaker includes an insulating sleeve 1 and a movable pull rod 5. A plurality of insulating sheds 2 are equidistantly arranged on the outer side of the insulating sleeve 1; a fixed plate 3 is fixed to the middle of the inner cavity of the insulating sleeve 1, and the fixed plate 3 divides the insulating sleeve 1 into two left and right chambers. Both chambers are slidably connected with movable plates 4, and movable pull rods 5 are fixed to the outer side of the movable plates 4. Through holes are opened on the left and right sides of the insulating sleeve 1, and the movable pull rods 5 are slidably connected in the through holes. Compression springs 6 are sleeved on the outer side of the movable pull rods 5, and both ends of the compression springs 6 are Fixed to the outer side of the movable plate 4 and the inner sides of the left and right ends of the insulating sleeve 1, the outer ends of the movable pull rods 5 are provided with threaded holes 7, and the threaded holes 7 are screwed with joints 8, and the ends of the joints 8 are provided with pin holes 9. By arranging a movable movable pull rod 5, in conjunction with the movable plate 4 and the compression spring 6, a good buffering effect can be played on the joint 8, thereby improving the service life of the joint 8. The movable pull rod 5 and the joint 8 are connected by threads, which is convenient for adjusting the position of the joint 8 to adapt to vacuum circuit breakers at different distances and have a wider range of uses.

[0016] A limit bolt 11 is threadedly connected to the joint 8, and the limit bolt 11 is in contact with the end of the movable pull rod 5. By providing the limit bolt 11, the joint 8 is prevented from loosening with the movable pull rod 5 when used, thereby improving the stability of use.

[0017] At least three limit rails 10 are provided in the two cavities at the left and right ends of the insulating sleeve 1. The limit rails 10 are arranged in an equidistant array around the central axis of the insulating sleeve 1. The outer side of the movable plate 4 is provided with a limit groove slidably connected to the limit rail 10. By setting the limit rail 10 and providing a limit groove slidably connected to the limit rail 10 on the outer side of the movable plate 4, axial rotation of the movable pull rod 5 during use is avoided, thereby further improving the stability of use.

[0018] Working principle: connection is achieved through the pin hole 9 at the end of the joint 8. When in use, the tension generated by the two joints 8 causes the movable plate 4 to move back and forth in the insulating sleeve 1 through the movable pull rod 5. At this time, the compression spring 6 repeatedly extends or contracts, which has a good buffering effect on the joint 8, thereby increasing the service life of the joint 8. The movable pull rod 5 and the joint 8 are connected by a threaded connection, which is convenient for adjusting the position of the joint 8 to adapt to vacuum circuit breakers at different distances and has a wider range of use. By setting a limit bolt 11, loosening of the joint 8 and the movable pull rod 5 is prevented when applicable, thereby improving the stability of use. By setting a limit rail 10 and opening a limit groove on the outer side of the movable plate 4 that is slidably connected to the limit rail 10, axial rotation of the movable pull rod 5 is avoided during use, thereby further improving the stability of use.

[0019] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0020] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An insulating pull rod for a vacuum circuit breaker, comprising an insulating sleeve and a movable pull rod, wherein a plurality of insulating sheds are equidistantly arranged on the outer side of the insulating sleeve, characterized in that: A fixed plate is fixed in the middle of the inner cavity of the insulating sleeve, and the fixed plate divides the insulating sleeve into two left and right chambers. A movable plate is slidably connected in the two chambers, and a movable pull rod is fixed to the outer side of the movable plate. Through holes are provided on the left and right sides of the insulating sleeve, and the movable pull rod is slidably connected in the through holes. Compression springs are sleeved on the outer side of the movable pull rod, and both ends of the compression springs are fixed to the outer side of the movable plate and the inner side of the left and right ends of the insulating sleeve. Threaded holes are provided at the outer ends of the movable pull rods, and joints are screwed at the threaded holes, and pin holes are provided at the ends of the joints.

2. The insulating pull rod for a vacuum circuit breaker according to claim 1, characterized in that: A limiting bolt is threadedly connected to the joint, and the limiting bolt is in matching contact with the end of the movable pull rod.

3. The insulating pull rod for a vacuum circuit breaker according to claim 1, characterized in that: At least three limit rails are arranged in two chambers at the left and right ends of the insulating sleeve. The limit rails are arranged in an equidistant array around the central axis of the insulating sleeve. The outer side of the movable plate is provided with a limit groove slidably connected to the limit rails.

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