Manual closing assembly of vacuum circuit breaker
By designing anti-retardation mechanism and one-way limiting mechanism in the vacuum circuit breaker, the existing vacuum circuit breaker's problem of laborious and easy failure is solved, and a more convenient and reliable closing operation is achieved.
Patent Information
- Application Number
- CN202420689190.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The existing vacuum circuit breakers require a lot of effort to close the switch and are laborious, which can easily lead to loosening of the hands and failure of closing the switch.
A manual closing assembly of a vacuum circuit breaker is designed, using an anti-retreatment mechanism and a one-way limiting mechanism. The eccentric wheel and ratchet are driven to rotate through the second rotation axis. The ratchet pushes the pawls, allowing the pawls to enter and exit the card slot, realize closing operation, and ensure that the closing wheel and limit block cannot be reversely rotated after closing is completed.
It reduces the difficulty of closing operation, saves manpower, avoids failure of closing, and is more convenient when using it.
Smart Images
Figure CN222914653U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vacuum circuit breakers, and particularly relates to a manual closing assembly of a vacuum circuit breaker. Background Technique
[0002] Vacuum circuit breakers have the advantages of small volume, light weight, being suitable for frequent operation, and not requiring maintenance after arc extinction. They are mainly applicable to places where oil-free and less maintenance are required and frequent operation is involved, and can also be configured in medium-mounted cabinets, double-layer cabinets, and fixed cabinets to control and protect high-voltage electrical equipment.
[0003] However, there are still some disadvantages in the actual use of existing vacuum circuit breakers. More obvious is that when performing a closing operation on an existing vacuum circuit breaker, it often requires a great deal of effort from the operator to complete. And due to the strenuous closing operation, it is very easy for the operator's hand to become loose during the closing process, resulting in a failed closing and the need to re-close, which is not convenient during actual use.
[0004] Therefore, it is very necessary to invent a manual closing assembly for a vacuum circuit breaker to solve the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide a manual closing assembly of a vacuum circuit breaker. By setting an anti-retreat mechanism and a one-way limiting mechanism, during the process of the second rotating shaft driving the eccentric wheel to rotate for closing, the second rotating shaft drives the ratchet wheel to rotate synchronously. The ratchet wheel continuously pushes the pawl, so that the pawl continuously repeats the operations of entering and exiting the adjacent card slots on the ratchet wheel. When the second rotating shaft stops rotating, the end of the pawl stays in the current card slot, thereby enabling the ratchet wheel to limit the second rotating shaft and preventing the second rotating shaft from reversely returning. In addition, during the process of the second rotating shaft driving the eccentric wheel to rotate for closing, the second rotating shaft drives the limiting wheel to rotate synchronously. When the limiting wheel rotates, it drives the limiting block to approach the limiting groove. When the limiting block enters the inner side of the limiting groove and contacts the inner wall of the limiting groove, the closing is completed. At this time, the limiting groove blocks the limiting block, thereby preventing the second rotating shaft from continuing to rotate and avoiding a failed closing caused by excessive rotation, so as to solve the problems that when performing a closing operation on an existing vacuum circuit breaker, it often requires a great deal of effort from the operator to complete, and due to the strenuous closing operation, it is very easy for the operator's hand to become loose during the closing process, resulting in a failed closing and the need to re-close, which is not convenient during actual use as mentioned in the above background technique.
[0006] According to one aspect of the present disclosure, the following technical solution is provided: A manual closing assembly of a vacuum circuit breaker, comprising:
[0007] A housing, wherein the housing is used to install and house the manual closing mechanism, the anti-retraction mechanism and the one-way limiting mechanism;
[0008] A manual closing mechanism, which is used to drive an eccentric wheel fixed to the outer side of the second rotating shaft to rotate to complete a closing operation;
[0009] An anti-recoil mechanism, the anti-recoil mechanism comprising a ratchet and a pawl;
[0010] The ratchet is fixedly sleeved and disposed outside the second rotating shaft, and the pawl is rotatably disposed on the inner wall of the housing through a pin shaft and is engaged with the ratchet; and
[0011] A one-way limiting mechanism, comprising a limiting wheel, a limiting block, an L-shaped bracket, a limiting plate, a limiting groove and a supporting spring;
[0012] The limiting wheel is fixedly sleeved and arranged on the outside of the second rotating shaft, the limiting block is fixedly arranged on the side of the limiting wheel, the L-shaped bracket is fixedly connected to the inner wall of the shell, the limiting plate is rotatably arranged on the L-shaped bracket through a pin shaft, the limiting groove is opened at the top of the limiting plate, and the supporting spring is fixedly connected between the L-shaped bracket and the limiting plate.
[0013] According to a manual closing assembly of a vacuum circuit breaker of at least one embodiment of the present disclosure, the manual closing mechanism includes a first rotating shaft, a second rotating shaft, a single-cycle flywheel, a sprocket, a chain, and a rotating handle.
[0014] According to the manual closing assembly of the vacuum circuit breaker of at least one embodiment of the present disclosure, the first rotating shaft and the second rotating shaft are arranged from top to bottom and are both rotatably nested in the housing through bearings.
[0015] According to the manual closing assembly of the vacuum circuit breaker of at least one embodiment of the present disclosure, the single-cycle flywheel is fixedly sleeved and arranged outside the first rotating shaft, and the sprocket is fixedly sleeved and arranged outside the second rotating shaft.
[0016] According to the manual closing assembly of the vacuum circuit breaker of at least one embodiment of the present disclosure, the chain transmission sleeve is arranged on the outer side of the single-cycle flywheel and the sprocket, and the rotating handle is fixedly arranged on the end of the first rotating shaft.
[0017] Technical effects and advantages of the utility model:
[0018] The utility model is provided with an anti-retreat mechanism and a one-way limit mechanism. During the process of the second rotating shaft driving the eccentric wheel to rotate for closing the switch, the second rotating shaft drives the ratchet wheel to rotate synchronously. The ratchet wheel continuously pushes the pawl, so that the pawl repeatedly enters and exits the adjacent card slots on the ratchet wheel. When the second rotating shaft stops rotating, the end of the pawl stays in the current card slot, so that the ratchet wheel limits the second rotating shaft and prevents the second rotating shaft from returning reversely. In addition, during the process of the second rotating shaft driving the eccentric wheel to rotate for closing the switch, the second rotating shaft drives the limit wheel to rotate synchronously. When the limit wheel rotates, it drives the limit block to approach the limit slot. When the limit block enters the inner side of the limit slot and contacts the inner wall of the limit slot, the closing is completed. At this time, the limit slot blocks the limit block, so that the second rotating shaft cannot continue to rotate, avoiding the failure of closing due to excessive rotation. Compared with the same type of device in the prior art, the utility model can realize the closing operation by means of multiple operations, reducing the closing difficulty and saving manpower. In addition, the limit can be realized after the closing is completed, thus avoiding the occurrence of the situation of closing failure and being more convenient in actual use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are included in this specification and form a part of this specification.
[0020] Figure 1 is an overall structural schematic diagram of a manual closing assembly of a vacuum circuit breaker according to an embodiment of the present disclosure.
[0021] Figure 2 is a structural schematic diagram of a manual closing mechanism of a manual closing assembly of a vacuum circuit breaker according to an embodiment of the present disclosure.
[0022] Figure 3 is a structural schematic diagram of an anti-retreat mechanism and a one-way limit mechanism of a manual closing assembly of a vacuum circuit breaker according to an embodiment of the present disclosure.
[0023] The specific reference numerals in the drawings are as follows:
[0024] 1. Housing;
[0025] 2. Manual closing mechanism; 21. First rotating shaft; 22. Second rotating shaft; 23. Single-cycle flywheel; 24. Sprocket; 25. Chain; 26. Rotating handle;
[0026] 3. Anti-retreat mechanism; 31. Ratchet wheel; 32. Pawl;
[0027] 4. One-way limiting mechanism; 41. Limiting wheel; 42. Limiting block; 43. L-shaped bracket; 44. Limiting plate; 45. Limiting groove; 46. Support spring. Detailed implementation manners
[0028] The following further elaborates on the present disclosure in conjunction with the accompanying drawings and implementation manners. It can be understood that the specific implementation manners described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the convenience of description, only the parts related to the present disclosure are shown in the drawings.
[0029] It should be noted that, without conflict, the implementation manners in the present disclosure and the features in the implementation manners can be combined with each other. The following will detail the technical solutions of the present disclosure with reference to the accompanying drawings and implementation manners.
[0030] Unless otherwise specified, the exemplary implementation manners / embodiments shown are understood to provide exemplary features of various details of some ways that can implement the technical concept of the present disclosure in practice. Therefore, unless otherwise specified, without departing from the technical concept of the present disclosure, the features of various implementation manners / embodiments can be additionally combined, separated, interchanged, and / or rearranged.
[0031] In the drawings, cross-hatching and / or shading are generally used to make the boundaries between adjacent components clear. Thus, unless stated, the presence or absence of cross-hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. Additionally, in the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of the components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences can be executed in a different order than described. For example, two consecutively described processes can be executed substantially simultaneously or in an order opposite to the described order. Moreover, the same reference numerals represent the same components.
[0032] When a component is referred to as being "on" or "above" another component, "connected to" or "coupled to" another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there can be intermediate components. However, when the component is referred to as being "directly on" the other component, "directly connected to" or "directly coupled to" the other component, there are no intermediate components. For this reason, the term "connection" can refer to physical connection, electrical connection, etc., and can have or not have intermediate components.
[0033] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "upper", "on", "higher", and "side (e.g., as in "sidewall")" to describe the relationship of one component to another (other) component as shown in the figures. In addition to the orientation depicted in the figures, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the figures is flipped, a component described as "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both "above" and "below" orientations. In addition, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted accordingly.
[0034] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are also intended to include the plural forms. In addition, when the terms "comprises" and / or "comprising" and their variations are used in this specification, it is stated that the features, integers, steps, operations, components, assemblies, and / or groups thereof are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about", and other similar terms are used as approximate terms and not as terms of degree, and thus are used to explain the inherent deviations of measured, calculated, and / or provided values that would be recognized by a person of ordinary skill in the art.
[0035] Figure 1 is a schematic diagram of the overall structure of the manual closing assembly of a vacuum circuit breaker according to an embodiment of the present disclosure.
[0036] As Figures 1 - 3 shown, the manual closing assembly of the vacuum circuit breaker of the present disclosure may include components such as a housing 1, a manual closing mechanism 2, a back-off prevention mechanism 3, and a one-way limiting mechanism 4.
[0037] Figure 2 is a schematic diagram of the structure of the manual closing mechanism 2 of the manual closing assembly of a vacuum circuit breaker according to an embodiment of the present disclosure.
[0038] As Figure 2As shown, in the present disclosure, the manual closing mechanism 2 includes a first rotating shaft 21, a second rotating shaft 22, a single-cycle flywheel 23, a sprocket 24, a chain 25 and a rotating handle 26, wherein the first rotating shaft 21 and the second rotating shaft 22 are arranged from top to bottom and are both rotatably nested in the housing 1 through bearings, the single-cycle flywheel 23 is fixedly sleeved on the outside of the first rotating shaft 21, the sprocket 24 is fixedly sleeved on the outside of the second rotating shaft 22, the chain 25 is transmission sleeved on the outside of the single-cycle flywheel 23 and the sprocket 24, and the rotating handle 26 is fixedly arranged at the end of the first rotating shaft 21.
[0039] Therefore, the first rotating shaft 21 is rotated by rotating the handle 26, and the first rotating shaft 21 drives the sprocket 24 to rotate through the single-cycle flywheel 23 and the chain 25. When the sprocket 24 rotates, the eccentric wheel is driven to rotate through the second rotating shaft 22, thereby completing the closing and opening operations.
[0040] Figure 3 It is a structural schematic diagram of an anti-retraction mechanism 3 and a one-way limiting mechanism 4 of a manual closing assembly of a vacuum circuit breaker according to an embodiment of the present disclosure.
[0041] like Figure 3 As shown, in a preferred embodiment, the anti-retraction mechanism 3 includes a ratchet 31 and a pawl 32, wherein the ratchet 31 is fixedly sleeved on the outside of the second rotating shaft 22, and the pawl 32 is rotatably disposed on the inner wall of the housing 1 through a pin shaft and engages with the ratchet 31.
[0042] Therefore, during the process of the second rotating shaft 22 driving the eccentric wheel to rotate and close the switch, the second rotating shaft 22 drives the ratchet 31 to rotate synchronously, and the ratchet 31 continuously pushes the pawl 32, so that the pawl 32 repeatedly enters and escapes from the adjacent slot on the ratchet 31. When the second rotating shaft 22 no longer rotates, the end of the pawl 32 stays in the current slot, so that the ratchet 31 limits the second rotating shaft 22, so that the second rotating shaft 22 cannot return to its original position.
[0043] like Figure 3 As shown, in the present disclosure, the one-way limiting mechanism 4 includes a limiting wheel 41, a limiting block 42, an L-shaped bracket 43, a limiting plate 44, a limiting groove 45 and a supporting spring 46, wherein the limiting wheel 41 is fixedly sleeved on the outside of the second rotating shaft 22, the limiting block 42 is fixedly arranged on the side of the limiting wheel 41, the L-shaped bracket 43 is fixedly connected to the inner wall of the outer shell 1, the limiting plate 44 is rotatably arranged on the L-shaped bracket 43 through a pin shaft, the limiting groove 45 is opened at the top of the limiting plate 44, and the supporting spring 46 is fixedly connected between the L-shaped bracket 43 and the limiting plate 44.
[0044] Thus, during the process of the second rotating shaft 22 driving the eccentric wheel to rotate for closing, the second rotating shaft 22 drives the limiting wheel 41 to rotate synchronously. When the limiting wheel 41 rotates, it drives the limiting block 42 to approach the limiting groove 45. When the limiting block 42 enters the inner side of the limiting groove 45 and contacts the inner wall of the limiting groove 45, the closing is completed. At this time, the limiting groove 45 blocks the limiting block 42, thereby preventing the second rotating shaft 22 from continuing to rotate and avoiding the failure of closing caused by excessive rotation.
[0045] Subsequently, when opening is required, press the end of the limiting plate 44 to disengage the limiting block 42 from the inner side of the limiting groove 45, and then continue to rotate the second rotating shaft 22, so that the second rotating shaft 22 drives the eccentric wheel to move away to complete the opening operation.
[0046] In the description of this specification, the description with reference to terms such as "an embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.
[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0048] Those skilled in the art should understand that the above embodiments are only for clearly explaining 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 can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present disclosure.
Claims
1. A manual closing assembly for a vacuum circuit breaker, characterized in that: include: A housing, wherein the housing is used to install and house the manual closing mechanism, the anti-retraction mechanism and the one-way limiting mechanism; A manual closing mechanism, which is used to drive an eccentric wheel fixed to the outer side of the second rotating shaft to rotate to complete a closing operation; An anti-recoil mechanism, the anti-recoil mechanism comprising a ratchet and a pawl; The ratchet is fixedly sleeved and disposed outside the second rotating shaft, and the pawl is rotatably disposed on the inner wall of the housing through a pin shaft and is engaged with the ratchet; and A one-way limiting mechanism, comprising a limiting wheel, a limiting block, an L-shaped bracket, a limiting plate, a limiting groove and a supporting spring; The limiting wheel is fixedly sleeved and arranged on the outside of the second rotating shaft, the limiting block is fixedly arranged on the side of the limiting wheel, the L-shaped bracket is fixedly connected to the inner wall of the shell, the limiting plate is rotatably arranged on the L-shaped bracket through a pin shaft, the limiting groove is opened at the top of the limiting plate, and the supporting spring is fixedly connected between the L-shaped bracket and the limiting plate.
2. The manual closing assembly of the vacuum circuit breaker according to claim 1, characterized in that: The manual closing mechanism comprises a first rotating shaft, a second rotating shaft, a single-cycle flywheel, a sprocket, a chain and a rotating handle.
3. The manual closing assembly of the vacuum circuit breaker according to claim 2, characterized in that: The first rotating shaft and the second rotating shaft are arranged from top to bottom and are both rotatably nested in the housing through bearings.
4. The manual closing assembly of the vacuum circuit breaker according to claim 3, characterized in that: The single-cycle flywheel is fixedly sleeved and arranged outside the first rotating shaft, and the sprocket is fixedly sleeved and arranged outside the second rotating shaft.
5. The manual closing assembly of the vacuum circuit breaker according to claim 4, characterized in that: The chain transmission sleeve is arranged on the outer side of the single-cycle flywheel and the sprocket, and the rotating handle is fixedly arranged on the end of the first rotating shaft.