Manual separating mechanism for permanent magnet ring main unit
By designing a hand-dividing mechanism including bracket, micro switch and drive shaft in the permanent magnet ring net cabinet, the problem of inadequate switching and error of closing signal caused by insufficient operating angle of the permanent magnet switch is solved, and the problem of inaccurate switching is achieved in the emergency situation Simple and convenient signal output to improve operational reliability and sensitivity.
Patent Information
- Application Number
- CN202421137321.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In the 12kV permanent magnet ring grid cabinet, the operating angle provided by the permanent magnet switch is limited, resulting in the problem of inadequate switching of the auxiliary switch and the closing and opening signal is incorrect.
A hand splitting mechanism including a first bracket, a second bracket, a micro switch and a transmission shaft is designed. Through the contacts on the transmission shaft and the claw arm or transmission plate, the opening signal output of the micro switch is realized, which expands the Contact area improves operating sensitivity and reduces rotational friction through mounting plates and bearings.
It realizes the simple and convenient output of the opening signal in an emergency, solves the problems of inadequate switching between the auxiliary mechanism and the error of closing the opening signal, and improves the operation reliability and sensitivity.
Smart Images
Figure CN222320004U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of ring network cabinets, in particular to a manual separation mechanism for permanent magnet ring network cabinets. Background Art
[0002] In the power transmission and transformation system, the ring main unit is a very important electrical equipment. Once a failure occurs, it may cause damage to the equipment at the least, or even cause a power system failure at the worst.
[0003] Permanent magnet circuit breakers for ring main units usually use direct-acting permanent magnet mechanisms. The mechanism moving iron core is connected to the vacuum interrupter through an insulating pull rod, and the mechanism coil enables the circuit breaker to realize the opening and closing functions. The permanent magnet operating mechanism is installed as a part of the vacuum circuit breaker in a stainless steel gas box. In the actual operation of the power grid, emergency manual opening is sometimes required. In the absence of external power supply, the mechanism coil cannot open the circuit breaker. To deal with this situation, the permanent magnet circuit breaker of the ring main unit needs to be equipped with a permanent magnet circuit breaker manual opening mechanism to manually open the permanent magnet circuit breaker in an emergency.
[0004] In recent years, during the use of 12kV permanent magnet ring main unit products, the operating angle that the permanent magnet switch can provide to the manual opening mechanism is limited, and cannot reach the 90-degree turning angle required by the F10 auxiliary switch. When it is enlarged through the connecting rod, due to the mechanical gap and the difference in the initial angle of the switch, the auxiliary switch often fails to switch into place and the closing and opening signals are wrong. Utility Model Content
[0005] In view of the above problems, the present application provides a manual opening mechanism for a permanent magnet ring main unit, which is used to solve the technical problems of inadequate switching of the auxiliary mechanism and erroneous closing and opening signals.
[0006] To achieve the above-mentioned purpose, the present application provides a manual opening mechanism for a permanent magnet ring network cabinet, comprising a first bracket, a second bracket, a micro switch and a transmission shaft, wherein the second bracket is located above the first bracket; the micro switch is installed on the first bracket, and the micro switch is provided with a contact portion; the transmission shaft passes through the first bracket and the second bracket, the transmission shaft is located on the side of the micro switch, and a contact piece is provided on the transmission shaft, and the contact piece is used to contact the contact portion of the micro switch during the rotation of the transmission shaft, and the micro switch sends a trip signal.
[0007] As an implementation manner of the present utility model, the contact member is a crank arm, the crank arm is transmission-connected to the transmission shaft, and the crank arm is used to contact the contact portion of the micro switch.
[0008] In this way, the crank arm rotates with the rotation of the transmission shaft, controls the rotation of the transmission shaft, and then adjusts the position of the crank arm. When the crank arm rotates with the transmission shaft to one side of the micro switch, the crank arm contacts the contact part of the micro switch, and the micro switch outputs a trip signal, which makes the operation process simple and convenient.
[0009] As an implementation mode of the utility model, a transmission plate is provided on the side of the crank arm opposite to the micro switch, and the transmission plate is hinged on the contact portion of the micro switch.
[0010] In this way, the transmission plate replaces the contact part of the micro switch, expanding the contact area. When the crank arm rotates counterclockwise and moves on the transmission plate, the transmission plate rotates clockwise, which causes the crank arm to apply force to the transmission plate, and the transmission plate applies force to the contact part of the micro switch, so that the micro switch outputs a trip signal. The crank arm does not need to directly contact the contact part of the micro switch, but contacts the transmission plate, and the transmission plate then transmits the force to the contact part of the micro switch. The contact area of the transmission plate is much larger than the contact area of the micro switch, which improves the sensitivity of operation.
[0011] As an implementation manner of the present utility model, the hinge point of the transmission plate is located at the lower part of the transmission plate.
[0012] In this way, the part where the hinge point of the transmission plate is located is connected to the contact part of the micro switch, and the hinge point is located at the lower part of the transmission plate, so that the crank arm rotates to the lower part of the transmission plate, and the transmission plate rotates clockwise, and the force applied by the crank arm to the transmission plate is transmitted to the contact part of the micro switch.
[0013] As an implementation manner of the utility model, the top cross-sectional shape of the transmission plate is circular, and the cross-sectional shape below the top of the transmission plate is rectangular.
[0014] In this way, the shape of the transmission plate is regular, so that the transmission plate is subjected to uniform force.
[0015] As an implementation manner of the utility model, a mounting plate is provided on the first bracket, and the mounting plate is used to fix the micro switch.
[0016] In this way, the micro switch is firmly fixed on the first bracket through the mounting plate.
[0017] As an implementation manner of the utility model, a long hole is provided on the mounting plate, and the mounting portion of the micro switch is located inside the long hole.
[0018] In this way, the micro switch can be moved inside the long hole, and the position of the micro switch can be fine-tuned to adapt to different initial angles of the transmission shaft.
[0019] As an implementation manner of the utility model, a first bearing and a second bearing are provided on an outer wall of the transmission shaft, the first bearing is mounted on the first bracket, and the second bearing is mounted on the second bracket.
[0020] In this way, the transmission shaft is fixed between the first bracket and the second bracket through the first bearing and the second bearing, so that the rotational friction of the transmission shaft is reduced and the transmission shaft rotates more smoothly.
[0021] Different from the prior art, the technical solution of the present application replaces the F10 auxiliary switch of the prior art with a micro switch, which has a simple and reliable structure and can be used for various small-angle permanent magnet switches. If the transmission shaft is not rotated, or the transmission shaft is rotated so that the crank arm fails to contact the contact part of the micro switch, the micro switch will not operate and the closing signal will be output; if the transmission shaft is rotated counterclockwise, the crank arm will contact the contact part of the micro switch, the micro switch will operate and the opening signal will be output, and the operation is simple and quick.
[0022] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation method and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.
[0024] In the drawings of the specification:
[0025] Figure 1 This is a side view of a manual separation mechanism for a permanent magnetic ring main unit in the present application;
[0026] Figure 2 This is a cross-sectional view of a closing mechanism of a manual release mechanism for a permanent magnetic ring main unit in the present application;
[0027] Figure 3 This is a cross-sectional view of a manual opening mechanism for a permanent magnetic ring main unit in the present application;
[0028] Figure 4 This is a schematic diagram of the partial structure of a manual opening mechanism for a permanent magnetic ring main unit in the present application;
[0029] Figure 5 This is a front view of a manual separation mechanism for a permanent magnet ring main unit in the present application.
[0030] The reference numerals in the above drawings are described as follows:
[0031] 1. The first bracket,
[0032] 2. The second bracket,
[0033] 3. The first bearing,
[0034] 4. Second bearing,
[0035] 5. Micro switch,
[0036] 6. Mounting plate,
[0037] 7. Transmission plate,
[0038] 8. Crutch arm,
[0039] 9. Drive shaft. DETAILED DESCRIPTION
[0040] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.
[0041] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.
[0042] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.
[0043] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, X and / or Y, which means: X exists, Y exists, and X and Y exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".
[0044] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.
[0045] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.
[0046] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.
[0047] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0048] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0049] According to some embodiments of the present application, please refer to Figures 1 to 5 The present embodiment relates to a manual opening mechanism for a permanent magnet ring main unit, which is used to solve the technical problems of inadequate switching of auxiliary organs and erroneous closing and opening signals.
[0050] To achieve the above-mentioned purpose, the present application provides a manual opening mechanism for a permanent magnet ring network cabinet, comprising a first bracket 1, a second bracket 2, a micro switch 5 and a transmission shaft 9, wherein the second bracket 2 is located above the first bracket 1; the micro switch 5 is installed on the first bracket 1, and the micro switch 5 is provided with a contact portion; the transmission shaft 9 passes through the first bracket 1 and the second bracket 2, and the transmission shaft 9 is located on the side of the micro switch 5, and a contact piece is provided on the transmission shaft 9, and the contact piece is used to contact the contact portion of the micro switch 5 during the rotation of the transmission shaft 9, and the micro switch 5 sends a trip signal.
[0051] The first bracket 1 and the second bracket 2 can be made of metal. The first bracket 1 can be in the shape of a plate and can have multiple fixing holes. The micro switch 5 can be installed on the first bracket 1 through the fixing holes. The second bracket 2 can be provided with supporting feet of a certain length, and the supporting feet can be welded on the first bracket 1. At the same time, corresponding through holes are provided on the first bracket 1 and the second bracket 2. The aperture of the through hole is larger than the cross-sectional area of the transmission shaft 9. The transmission shaft 9 can pass through the through hole and run through the first bracket 1 and the second bracket 2. The contact piece surrounds the outer wall of the transmission shaft 9 and can have a protruding extension portion of a certain length that can contact the contact portion of the micro switch 5.
[0052] When in use, the transmission shaft 9 is rotated, and the contact on the transmission shaft 9 rotates with the rotation of the transmission shaft 9. During the counterclockwise rotation of the transmission shaft 9, the contact gradually approaches the micro switch 5 until the contact touches the contact part of the micro switch 5, and the micro switch 5 sends an opening signal; when the transmission shaft 9 does not rotate, the contact does not rotate, the micro switch 5 does not operate, and the micro switch 5 sends a closing signal. The structure is simple and the operation is convenient. Only when the contact part touches the contact part of the micro switch 5, the micro switch 5 will output the opening signal, and the closing signal will be output in other states, which is safe and reliable.
[0053] According to some embodiments of the present application, optionally, the contact member is a crank arm 8 , which is transmission-connected to the transmission shaft 9 , and the crank arm 8 is used to contact the contact portion of the micro switch 5 .
[0054] In this way, the crank arm 8 rotates with the rotation of the transmission shaft 9, controls the rotation of the transmission shaft 9, and then adjusts the position of the crank arm 8. When the crank arm 8 rotates to one side of the micro switch 5 with the transmission shaft 9, the crank arm 8 contacts the contact part of the micro switch 5, and the micro switch 5 outputs a trip signal, and the operation process is simple and convenient.
[0055] The crank arm 8 can be annular, divided into a hollow portion and an extended portion. The hollow portion can just cover the transmission shaft 9, and the extended portion can be set to a certain length to match the distance of the contact portion of the micro switch 5.
[0056] According to some embodiments of the present application, optionally, a transmission plate 7 is provided on a side of the crank arm 8 opposite to the micro switch 5 , and the transmission plate 7 is hinged on a contact portion of the micro switch 5 .
[0057] In this way, the transmission plate 7 replaces the contact part of the micro switch 5, and the contact area is enlarged. The crank arm 8 rotates counterclockwise, and when it moves on the transmission plate 7, the transmission plate 7 rotates clockwise, which makes the crank arm 8 apply a force to the transmission plate 7, and the transmission plate 7 applies a force to the contact part of the micro switch 5, so that the micro switch 5 outputs a gate-opening signal. The crank arm 8 does not need to directly contact the contact part of the micro switch 5, but contacts the transmission plate 7, and the transmission plate 7 transmits the force to the contact part of the micro switch 5. The contact area of the transmission plate 7 is much larger than the contact area of the micro switch 5, which improves the sensitivity of operation.
[0058] According to some embodiments of the present application, optionally, the hinge point of the transmission plate 7 is located at the lower part of the transmission plate 7 .
[0059] In this way, the part where the hinge point of the transmission plate 7 is located is connected to the contact part of the micro switch 5, and the hinge point is located at the lower part of the transmission plate 7, so that the crank arm 8 rotates to the lower part of the transmission plate 7, and the transmission plate 7 rotates clockwise. The force applied by the crank arm 8 to the transmission plate 7 is transmitted to the contact part of the micro switch 5.
[0060] According to some embodiments of the present application, optionally, the top cross-sectional shape of the transmission plate 7 is circular, and the cross-sectional shape below the top of the transmission plate 7 is rectangular.
[0061] In this way, the shape of the transmission plate 7 is regular, so that the transmission plate 7 is subjected to uniform force.
[0062] According to some embodiments of the present application, optionally, a mounting plate 6 is provided on the first bracket 1 , and the mounting plate 6 is used to fix the micro switch 5 .
[0063] In this way, the micro switch 5 is firmly fixed on the first bracket 1 through the mounting plate 6 .
[0064] According to some embodiments of the present application, optionally, a long hole is provided on the mounting plate 6, and the mounting portion of the micro switch 5 is located inside the long hole.
[0065] In this way, the micro switch 5 can move inside the long hole, and the position of the micro switch 5 can be fine-tuned to adapt to different initial angles of the transmission shaft 9.
[0066] The mounting position of the micro switch 5 can be adapted to the width of the long hole, so that the mounting portion of the micro switch 5 can move freely in the long hole. When it moves to a suitable position, the micro switch 5 can be fixed with screws.
[0067] According to some embodiments of the present application, optionally, a first bearing 3 and a second bearing 4 are provided on an outer wall of the transmission shaft 9 , the first bearing 3 is mounted on the first bracket 1 , and the second bearing 4 is mounted on the second bracket 2 .
[0068] In this way, the transmission shaft 9 is fixed between the first bracket 1 and the second bracket 2 through the first bearing 3 and the second bearing 4, so that the rotational friction of the transmission shaft 9 is reduced and the transmission shaft 9 rotates more smoothly.
[0069] Different from the prior art, the technical solution of the present application replaces the F10 auxiliary switch of the prior art with a micro switch 5, has a simple and reliable structure, and can be used for various small-angle permanent magnet switches. If the transmission shaft 9 is not rotated, or the transmission shaft 9 is rotated so that the crank arm 8 fails to contact the contact part of the micro switch 5, the micro switch 5 does not operate and outputs a closing signal; if the transmission shaft 9 is rotated counterclockwise, the crank arm 8 contacts the contact part of the micro switch 5, the micro switch 5 operates, and outputs an opening signal, and the operation is simple and quick.
[0070] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation method and drawings of the present application.
[0071] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.
[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
Claims
1. A manual separation mechanism for a permanent magnet ring main unit, characterized in that: include: The first bracket, a second bracket, wherein the second bracket is located above the first bracket; A micro switch, the micro switch is mounted on the first bracket, and the micro switch is provided with a contact portion; and A transmission shaft, the transmission shaft passes through the first bracket and the second bracket, the transmission shaft is located on the side of the micro switch, and a contact piece is provided on the transmission shaft. The contact piece is used to contact the contact part of the micro switch during the rotation of the transmission shaft, and the micro switch sends a trip signal.
2. A manual separation mechanism for a permanent magnetic ring main unit according to claim 1, characterized in that: The contact piece is a crank arm, which is transmission-connected to the transmission shaft, and is used to contact the contact portion of the micro switch.
3. The manual separation mechanism for permanent magnetic ring main unit according to claim 2 is characterized in that: A transmission plate is provided on one side of the crank arm opposite to the micro switch, and the transmission plate is hinged on the contact portion of the micro switch.
4. The manual separation mechanism for a permanent magnetic ring main unit according to claim 3 is characterized in that: The hinge point of the transmission plate is located at the lower part of the transmission plate.
5. The manual separation mechanism for permanent magnetic ring main unit according to claim 4 is characterized in that: The cross-sectional shape of the top of the transmission plate is circular, and the cross-sectional shape below the top of the transmission plate is rectangular.
6. The manual separation mechanism for permanent magnetic ring main unit according to claim 1, characterized in that: The first bracket is provided with a mounting plate, and the mounting plate is used to fix the micro switch.
7. The manual separation mechanism for permanent magnetic ring main unit according to claim 6 is characterized in that: The mounting plate is provided with a long hole, and the mounting portion of the micro switch is located inside the long hole.
8. The manual separation mechanism for permanent magnetic ring main unit according to claim 1 is characterized in that: The outer wall of the transmission shaft is provided with a first bearing and a second bearing, the first bearing is mounted on the first bracket, and the second bearing is mounted on the second bracket.