Disconnecting link connecting structure of vacuum circuit breaker disconnecting switch
By improving the knife switch connection structure of the vacuum circuit breaker isolating switch, and using the design of clips and elastic components, the problem of unstable knife switch connection is solved, achieving better contact and longer service life.
Patent Information
- Application Number
- CN202422394887.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The knife switch connection structure of the existing vacuum circuit breaker isolating switch has unstable force between the knife switches, resulting in poor contact and affecting the stability and service life of the equipment.
A knife switch connection structure of a vacuum circuit breaker is designed, including the first and second blades, clips, elastic components and contacts. Through the symmetrical arrangement of clips and the use of elastic components, the stability and good contact of the knife switch connection are improved.
Improves the stability and safety of the isolator switch and extends the service life of the vacuum circuit breaker.
Smart Images
Figure CN223245487U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to a knife switch connection structure of an isolating switch of a vacuum circuit breaker. Background Art
[0002] A vacuum circuit breaker is a high-voltage electrical device whose primary feature is the rapid interruption of current by utilizing a high vacuum as an arc-extinguishing medium. Isolators, on the other hand, are primarily used to isolate the power supply to ensure safe maintenance of other electrical equipment. Existing vacuum circuit breaker isolators suffer from problems such as unstable force between the blades, resulting in poor contact at the isolating blades, and poor overall design stability, which seriously impacts the safety and service life of the vacuum circuit breaker. Utility Model Content
[0003] The purpose of the utility model is to overcome the defects of the vacuum circuit breaker disconnector in the prior art and provide a knife switch connection structure of the vacuum circuit breaker disconnector, which can greatly improve the stability of the vacuum circuit breaker disconnector.
[0004] In order to achieve the above and other purposes, the present invention is implemented by including the following technical solutions: The present invention provides a knife switch connection structure of a vacuum circuit breaker disconnector, the knife switch connection structure of the vacuum circuit breaker disconnector comprising:
[0005] a first knife switch, the first knife switch comprising a first blade and a second blade connected together at both ends, with a gap formed between the first blade and the second blade;
[0006] a second knife switch, disposed at one end of the first knife switch, the second knife switch comprising a base and a contact located on the base, the gap passing through the contact along a motion trajectory close to the one end of the second knife switch;
[0007] And a clip, which is symmetrically arranged on the outside of the first knife gate near one end of the second knife gate, one end of the clip is fixed on the first knife gate, and the other end extends out of the end of the first knife gate and is fixed together.
[0008] In some embodiments, the contacts are perpendicular to the base.
[0009] In some embodiments, a protrusion is provided on one side adjacent to the first blade and the second blade.
[0010] In some embodiments, the first blade and the second blade are provided with a first notch at one end close to the second knife gate.
[0011] In some embodiments, a second notch is provided on the clip, and the second notch is provided outside the first notch.
[0012] In some embodiments, the clip includes a contact section, a transition section and an extension section. The transition section and the extension section do not contact the first knife switch. The two ends of the transition section are respectively connected to the contact section and the extension section. The transition section and the contact section and the extension section form an angle, and the angle is an obtuse angle.
[0013] In some embodiments, the spring is constrained within the positioning sleeve.
[0014] In some embodiments, the second bolt passes through the first blade, the gap, and the second blade.
[0015] In some embodiments, the knife gate connection structure includes an elastic component, which is arranged on the first knife gate. The elastic component includes a second bolt and a second nut, and the second nut is arranged on one side of the first blade. The second bolt is provided with a first spring on the part outside the second blade, and the second bolt is provided with an anti-slip tube, which is located in the gap. A fixing plate is provided on the outer periphery of the anti-slip tube, and the fixing plate has several small holes.
[0016] In some embodiments, at least two fixing posts are provided on the clip, and the fixing posts pass through the clip, the first blade, the fixing plate and the second blade.
[0017] The utility model provides a knife switch connection structure for a vacuum circuit breaker isolating switch. Compared with the prior art, the utility model has the following beneficial effects: good contact at the isolating knife switch, good overall design stability of the isolating switch, safe use of the vacuum circuit breaker, and long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 Shown is a schematic diagram of the overall structure of the vacuum circuit breaker disconnector of the present utility model;
[0020] Figure 2 Shown is a three-dimensional diagram of the knife switch connection structure of the vacuum circuit breaker disconnector of the present utility model;
[0021] Figure 3Shown is a three-dimensional diagram of the knife switch connection structure of the vacuum circuit breaker disconnector of the present utility model;
[0022] Figure 4 Shown is a top view of the knife switch connection structure of the vacuum circuit breaker disconnector of the present invention;
[0023] Figure 5 Shown is a schematic diagram of the knife switch connection structure clip of the vacuum circuit breaker disconnector of the present utility model;
[0024] Figure 6 Shown is a three-dimensional diagram of the rotary shaft of the knife switch connection structure of the vacuum circuit breaker disconnector of the present invention;
[0025] Figure 7 Shown is a partial enlarged view of the knife switch connection structure A of the vacuum circuit breaker disconnector of the present invention.
[0026] 100-first knife switch, 101-first blade, 102-second blade, 103-first notch, 200-gap, 300-first insulator, 400-clip, 401-second notch, 500-first bolt, 600-first nut, 700-second knife switch, 701-base, 702-contact, 402-contact section, 403-transition section, 404-extension section, 405-fixing column, 800-second insulator, 900-protrusion, 1 10-elastic component, 111-second bolt, 112-second nut, 113-second spring, 114-first positioning sleeve, 115-anti-slip cylinder, 116-fixing plate, 120-connecting column, 130-current transformer, 140-rotating shaft assembly, 141-first small hole, 142-third bolt, 143-third nut, 144-second spring, 145-second positioning sleeve, 146-second small hole, 147-fourth bolt, 148-rotating shaft body. DETAILED DESCRIPTION
[0027] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.
[0028] like Figure 1 and Figure 4As shown, the utility model provides a knife switch connection structure of a vacuum circuit breaker disconnector, wherein the knife switch connection structure includes a first knife switch 100, wherein the first knife switch 100 includes a first blade 101 and a second blade 102 connected together at both ends, and a gap 200 is formed between the first blade 101 and the second blade 102, and the first knife switch 100 is connected to a first insulator 300, and the connection point is located in the gap 200.
[0029] like Figure 2 As shown, the knife switch connection structure includes a second knife switch 700, which is arranged on one side of the first knife switch 100. The second knife switch 700 includes a base 701 and a contact 702 located on the base 701. The gap 200 passes through the contact 702 in a movement trajectory close to one end of the second knife switch 700. The base 701 is perpendicular to the contact 702. The base 701 is fixed to the second insulator 800. The contact 702 matches the gap 200 to realize the connection or disconnection of the isolating switch.
[0030] like Figure 3 As shown, the first blade 101 and the second blade 102 are provided with a first notch 103 on the side close to the second knife gate 700. The first notch 103 can be a U-shaped structure. The U-shaped structure of the first notch 103 can disperse stress and make the clamping force between the knife gates uniform, thereby having better connection stability.
[0031] like Figure 3 As shown, the knife switch connection structure of the vacuum circuit breaker disconnector includes a clip 400, which is symmetrically arranged outside the first notch 103. One end of the clip 400 can be fixed to the first knife switch 100, and the other end of the clip 400 can extend beyond the end of the first knife switch 100 and be fixed together using a first bolt 500 and a first nut 600. The clip 400 can also be provided with a second notch 401, which can also be U-shaped and can be located outside the first notch 103.
[0032] like Figure 4 and Figure 5As shown, the clip 400 includes a contact section 402, a transition section 403, and an extension section 404. The transition section 403 and the extension section 404 do not contact the first knife gate 100. The two ends of the transition section 403 are respectively connected to the contact section 402 and the extension section 404. The transition section 403 forms an obtuse angle with the contact section 402 and the extension section 404. The angle design of the clip 400 can better fit the first knife gate 100 and can cooperate with the first bolt 500 and the first nut 600 to stabilize the first blade 101 and the second blade 102.
[0033] Furthermore, a protrusion 900 is provided on one side adjacent to the first blade 101 and the second blade 102 , and the protrusion 900 can achieve point contact with the contact 702 .
[0034] like Figure 2 and Figure 4 As shown, the knife switch connection structure of the vacuum circuit breaker disconnector includes an elastic component 110, which is arranged on the first knife switch 100. The elastic component 110 includes a second bolt 111 and a second nut 112. The second nut 112 is arranged on one side of the first blade 101. The second bolt 111 is provided with a first spring 113 on the portion outside the second blade 102. First positioning sleeves 114 are provided at both ends of the first spring 113. The first spring 113 is confined within the first positioning sleeve 114. The second bolt 111 passes through the second blade 102, the gap 200 and the first blade 101. An anti-slip cylinder 115 is provided on the second bolt 111. The anti-slip cylinder 115 is located in the gap 200. A fixing plate 116 is provided on the outer periphery of the anti-slip cylinder 115. The fixing plate 116 has a plurality of small holes. At least two fixing posts 405 are provided on the clip 400 . The fixing posts 405 pass through the clip 400 , the first blade 101 , the fixing plate 116 , and the second blade 102 .
[0035] like Figure 1 、 Figure 2 、 Figure 6 and Figure 7As shown, the knife switch connection structure of the vacuum circuit breaker disconnector includes a connecting column 120, one end of the connecting column 120 is connected to the current transformer 130, and the connecting column 120 is connected to a rotating shaft assembly 140. The rotating shaft assembly 140 includes a rotating shaft body 148, and a first small hole 141 is provided on the rotating shaft body 148. A third bolt 142 is provided in the first small hole 141, and a third nut 143 is provided at the connection between the third bolt 142 and the first blade 101. A second spring 144 is sleeved on the part of the third bolt 142 located on the outside of the second blade 102, and second positioning sleeves 145 are provided at both ends of the second spring 144. A second small hole 146 is also provided at the lower end of the rotating shaft 140, and a fourth bolt 147 is provided in the second small hole 146.
[0036] In the description of the present invention, it should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0037] It should be understood that the terms "height", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0038] Furthermore, the terms "first" and "second" 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 being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.
[0039] Throughout this specification, reference to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0040] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.
[0041] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A knife switch connection structure of a vacuum circuit breaker disconnector, characterized in that: The knife switch connection structure includes: a first knife switch, the first knife switch comprising a first blade and a second blade connected together at both ends, with a gap formed between the first blade and the second blade; a second knife switch, disposed at one end of the first knife switch, the second knife switch comprising a base and a contact located on the base, the gap passing through the contact along a motion trajectory close to the one end of the second knife switch; And a clip, which is symmetrically arranged on the outside of the first knife gate near one end of the second knife gate, one end of the clip is fixed on the first knife gate, and the other end extends out of the end of the first knife gate and is fixed together.
2. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 1, characterized in that: The contact is perpendicular to the base.
3. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 1, characterized in that: A protrusion is provided on one side adjacent to the first blade and the second blade.
4. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 1, characterized in that: The first blade and the second blade are provided with a first notch at one end close to the second knife switch.
5. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 4, characterized in that: The clip is provided with a second notch, and the second notch is arranged outside the first notch.
6. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 1, characterized in that: The clip includes a contact section, a transition section and an extension section. The transition section and the extension section do not contact the first knife switch. The two ends of the transition section are respectively connected to the contact section and the extension section. The transition section and the contact section and the extension section form an angle, which is an obtuse angle.
7. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 1, characterized in that: The knife gate connection structure includes an elastic component, which is arranged on the first knife gate. The elastic component includes a second bolt and a second nut. The second nut is arranged on one side of the first blade. The second bolt is provided with a first spring on the part located outside the second blade. The second bolt is provided with an anti-slip tube, which is located in the gap. A fixing plate is provided on the outer periphery of the anti-slip tube, and the fixing plate has several small holes.
8. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 7, characterized in that: At least two fixing posts are provided on the clip, and the fixing posts pass through the clip, the first blade, the fixing plate and the second blade.
9. The knife switch connection structure of the vacuum circuit breaker disconnector according to claim 1, characterized in that: The knife switch connection structure includes a connecting column, one end of which is connected to the current transformer, and the other end of which is connected to a rotating shaft assembly.