Manual closing and locking device of vacuum circuit breaker

Abstract

The utility model discloses a manual closing and locking device of a vacuum circuit breaker, which relates to the technical field of vacuum circuit breakers and comprises a shell used for installing a contact assembly and a closing and locking mechanism; the contact assembly is positioned in the shell; the closing lock catch mechanism comprises a fusiform push block, a rotating shaft, a driving block, a turntable, a second reset spring, a locking rod and a locking hole; the fusiform push block is rotationally arranged in the shell through a pin shaft and attached to the bottom end of the conducting rod, the rotating shaft penetrates through the front face of the shell, extends into the shell and is slidably connected with the shell, and the two driving blocks are fixedly arranged at the top and the bottom of the rotating shaft respectively. According to the utility model, the locking operation can be directly completed after manual switching-on and switching-off are completed, the operation is simple and convenient, the switching-off caused by mistakenly touching the turntable can be avoided, and the actual use effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to a manual closing and locking device of a vacuum circuit breaker. Background Art

[0002] Vacuum circuit breakers have the advantages of small size, light weight, suitable for frequent operation and no maintenance required after arc extinguishing. They are widely used in distribution networks. In addition, as a control and protection switch for high-voltage electrical equipment, they need to be able to realize manual closing and opening operations.

[0003] However, after the existing vacuum circuit breaker is manually closed and the moving contact and the static contact are brought into contact with each other, there is no locking, so there is a danger of accidental tripping due to manual mis-touch, which in turn affects the normal use of the vacuum circuit breaker.

[0004] Therefore, it is necessary to invent a manual closing and locking device for a vacuum circuit breaker to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a manual closing and locking device for a vacuum circuit breaker. The closing lock mechanism is provided so that when the contact assembly is closed, the rotary disk is pulled outward. When the rotary disk is pulled, the second reset spring is stretched, and the locking rod is driven to move out from the inner side of the adjacent locking hole to release the lock. Then the rotary disk is rotated. When the rotary disk is rotated, the shuttle push block is driven to rotate through the rotating shaft and the driving block, so that the shuttle push block performs a closing operation on the contact assembly. After the closing is completed, the rotary disk is released. At this time, the stretched second reset spring drives the rotary disk to move backward and reset. When the rotary disk moves, it drives the locking rod to be inserted into the inner side of the adjacent locking hole again to complete the locking, so as to solve the problem that the existing vacuum circuit breaker proposed in the above background technology is prone to accidental tripping due to manual error touch after the moving contact and the static contact are contacted with each other during manual closing, thereby affecting the normal use of the vacuum circuit breaker.

[0006] According to one aspect of the present disclosure, the following technical solution is provided: a manual closing and locking device for a vacuum circuit breaker, comprising:

[0007] A housing, wherein the housing is used to install the contact assembly and the closing lock mechanism;

[0008] a contact assembly located inside the housing; and

[0009] A closing lock mechanism, the closing lock mechanism comprising a shuttle push block, a rotating shaft, a driving block, a rotating disk, a second return spring, a locking rod and a locking hole;

[0010] The shuttle-shaped push block is rotatably arranged inside the shell through a pin shaft and fits with the bottom end of the conductive rod. The rotating shaft passes through the front side of the shell and extends to the inside of the shell and is slidably connected to the shell. Two driving blocks are provided. The two driving blocks are respectively fixed on the top and bottom of the rotating shaft. The rotating shaft and the two driving blocks are slidably arranged on the inner side of the shuttle-shaped push block. The turntable is fixedly sleeved at the outer front end of the rotating shaft. The second return spring is sleeved on the outer side of the rotating shaft and fixedly connected between the turntable and the shell. The locking rod is fixedly arranged on the rear side of the turntable. A plurality of locking holes are provided. The plurality of locking holes are evenly opened on the front side of the shell. The rear end of the locking rod is slidably inserted into the inner sides of adjacent locking holes.

[0011] According to the manual closing and locking device of the vacuum circuit breaker of at least one embodiment of the present disclosure, the contact assembly includes a vacuum interrupter, a static contact, a moving contact, a conductive rod, a traction plate and a first reset spring.

[0012] According to the manual closing and locking device of the vacuum circuit breaker of at least one embodiment of the present disclosure, the vacuum interrupter is fixedly arranged at the top of the inner cavity of the shell, and the static contact is fixedly arranged at the top of the inner side of the vacuum interrupter.

[0013] According to the manual closing and locking device of the vacuum circuit breaker of at least one embodiment of the present disclosure, the moving contact is located below the static contact, and the conductive rod slides through the bottom of the vacuum interrupter and extends to the inside of the vacuum interrupter to be fixedly connected with the moving contact.

[0014] According to the manual closing and locking device of the vacuum circuit breaker of at least one embodiment of the present disclosure, the traction plate is fixedly sleeved and arranged in the middle part of the outer side of the conductive rod, two first reset springs are provided, and the two first reset springs are respectively fixedly arranged on both sides of the top of the traction plate, and the first reset spring is fixedly connected to the vacuum arc extinguishing chamber.

[0015] Technical effects and advantages of the utility model:

[0016] The utility model is provided with a closing lock mechanism, so that when the contact assembly is closed, the rotary disk is pulled outward, and the second reset spring is stretched when the rotary disk is pulled, and the locking rod is driven to move out from the inner side of the adjacent locking hole to release the lock. The rotary disk is then rotated. When the rotary disk is rotated, the shuttle-shaped push block is driven to rotate through the rotating shaft and the driving block, so that the shuttle-shaped push block closes the contact assembly. After the closing is completed, the rotary disk is released. At this time, the stretched second reset spring drives the rotary disk to move backward and reset. When the rotary disk moves, it drives the locking rod to be inserted into the inner side of the adjacent locking hole again to complete the locking. Compared with the same type of device in the prior art, the utility model can directly complete the locking operation after manual closing and opening are completed. It is simple to operate and can also avoid the opening of the switch caused by the rotary disk being accidentally touched, and the actual use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0018] Figure 1 It is a schematic diagram of the overall structure of a manual closing and locking device of a vacuum circuit breaker according to an embodiment of the present disclosure.

[0019] Figure 2 It is a schematic diagram of the contact assembly structure of a manual closing and locking device of a vacuum circuit breaker according to an embodiment of the present disclosure.

[0020] Figure 3 The present invention is a schematic diagram of the structure of a closing and locking mechanism of a manual closing and locking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0021] The specific reference numerals in the figure are:

[0022] 1. Shell;

[0023] 2. Contact assembly; 21. Vacuum interrupter; 22. Stationary contact; 23. Moving contact; 24. Conductive rod; 25. Pull plate; 26. First return spring;

[0024] 3. Closing lock mechanism; 31. Shuttle push block; 32. Rotating shaft; 33. Driving block; 34. Turntable; 35. Second return spring; 36. Locking rod; 37. Locking hole. DETAILED DESCRIPTION

[0025] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0028] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0029] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0030] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0031] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0032] Figure 1 It is a schematic diagram of the overall structure of a manual closing and locking device of a vacuum circuit breaker according to an embodiment of the present disclosure.

[0033] like Figure 1-Figure 3 As shown, the manual closing and locking device of the vacuum circuit breaker disclosed in the present invention may include: a housing 1, a contact assembly 2, a closing and locking mechanism 3 and other components.

[0034] Figure 2 It is a schematic structural diagram of a contact assembly 2 of a manual closing and locking device of a vacuum circuit breaker according to an embodiment of the present disclosure.

[0035] like Figure 2 As shown, in the present disclosure, the contact assembly 2 includes a vacuum arc chamber 21, a static contact 22, a moving contact 23, a conductive rod 24, a traction plate 25 and a first reset spring 26, wherein the vacuum arc chamber 21 is fixedly arranged at the top of the inner cavity of the shell 1, the static contact 22 is fixedly arranged at the inner top of the vacuum arc chamber 21, the moving contact 23 is located below the static contact 22, the conductive rod 24 slides through the bottom of the vacuum arc chamber 21 and extends to the inside of the vacuum arc chamber 21 and is fixedly connected to the moving contact 23, the traction plate 25 is fixedly sleeved and arranged in the middle part of the outer side of the conductive rod 24, two first reset springs 26 are provided, and the two first reset springs 26 are respectively fixedly arranged on both sides of the top of the traction plate 25, and the first reset spring 26 is fixedly connected to the vacuum arc chamber 21.

[0036] As a result, after the conductive rod 24 is pushed, the moving contact 23 is driven upward to close the circuit breaker, and at the same time, the traction plate 25 is driven to compress the first return spring 26. Subsequently, when the conductive rod 24 is no longer pushed, the compressed first return spring 26 drives the conductive rod 24 downward through the traction plate 25, thereby completing the opening of the circuit breaker.

[0037] Figure 3It is a structural schematic diagram of a closing and locking mechanism 3 of a manual closing and locking device for a vacuum circuit breaker according to an embodiment of the present disclosure.

[0038] like Figure 3 As shown, in a preferred embodiment, the closing lock mechanism 3 includes a shuttle push block 31, a rotating shaft 32, a driving block 33, a rotating disk 34, a second reset spring 35, a locking rod 36 and a locking hole 37, wherein the shuttle push block 31 is rotatably arranged inside the housing 1 through a pin shaft and is in contact with the bottom end of the conductive rod 24, the rotating shaft 32 passes through the front of the housing 1 and extends to the inside of the housing 1 and is slidably connected to the housing 1, and two driving blocks 33 are provided, and the two driving blocks 33 are respectively fixedly arranged on the rotating shaft 32 At the top and bottom, the rotating shaft 32 and the two driving blocks 33 are slidably arranged on the inner side of the shuttle-shaped push block 31, the rotating disk 34 is fixedly sleeved on the outer front end of the rotating shaft 32, the second return spring 35 is sleeved on the outer side of the rotating shaft 32 and fixedly connected between the rotating disk 34 and the shell 1, the locking rod 36 is fixedly arranged on the rear side of the rotating disk 34, and a plurality of locking holes 37 are arranged, and a plurality of the locking holes 37 are evenly opened on the front side of the shell 1, and the rear end of the locking rod 36 is slidably inserted into the inner side of the adjacent locking holes 37.

[0039] Therefore, when closing the contact assembly 2, the turntable 34 is pulled outward, and the second reset spring 35 is stretched when the turntable 34 is pulled, and at the same time, the locking rod 36 is driven to move out from the inside of the adjacent locking hole 37 to release the lock, and then the turntable 34 is rotated. When the turntable 34 is rotated, the shuttle push block 31 is driven to rotate through the rotating shaft 32 and the driving block 33, so that the shuttle push block 31 closes the contact assembly 2. After the closing is completed, the turntable 34 is released. At this time, the stretched second reset spring 35 drives the turntable 34 to move backward and reset. When the turntable 34 moves, it drives the locking rod 36 to be inserted into the inside of the adjacent locking hole 37 again to complete the locking.

[0040] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A manual closing and locking device for a vacuum circuit breaker, characterized in that: include: A housing for mounting the contact assembly and the closing lock mechanism; A contact assembly, wherein the contact assembly is located inside the housing; as well as A closing lock mechanism, comprising a shuttle-shaped push block, a rotating shaft, a drive block, a rotary disk, a second return spring, a locking rod, and a locking hole; The shuttle-shaped push block is rotatably arranged inside the shell through a pin shaft and fits with the bottom end of the conductive rod. The rotating shaft passes through the front face of the shell and extends to the inside of the shell and is slidably connected to the shell. Two driving blocks are provided, and the two driving blocks are respectively fixed on the top and bottom of the rotating shaft. The rotating shaft and the two driving blocks are slidably arranged on the inside of the shuttle-shaped push block. The turntable is fixedly sleeved on the front end of the outer side of the rotating shaft. The second return spring is sleeved on the outside of the rotating shaft and fixedly connected between the turntable and the shell. The locking rod is fixedly arranged on the rear side of the turntable. A plurality of locking holes are provided. A plurality of locking holes are evenly opened on the front face of the shell. The rear end of the locking rod is slidably inserted into the inner sides of adjacent locking holes.

2. The manual closing and locking device for a vacuum circuit breaker according to claim 1, characterized in that: The contact assembly includes a vacuum interrupter, a static contact, a moving contact, a conductive rod, a traction plate and a first reset spring.

3. The manual closing and locking device for a vacuum circuit breaker according to claim 2, characterized in that: The vacuum interrupter is fixedly arranged on the top of the inner cavity of the shell, and the static contact is fixedly arranged on the top of the inner side of the vacuum interrupter.

4. The manual closing and locking device for a vacuum circuit breaker according to claim 3, characterized in that: The moving contact is located below the static contact, and the conductive rod slides through the bottom of the vacuum interrupter and extends into the interior of the vacuum interrupter to be fixedly connected to the moving contact.

5. The manual closing and locking device for a vacuum circuit breaker according to claim 4, characterized in that: The traction plate is fixedly sleeved and arranged in the middle part of the outer side of the conductive rod. Two first reset springs are provided. The two first reset springs are respectively fixedly arranged on both sides of the top of the traction plate. The first reset spring is fixedly connected to the vacuum arc chamber.

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