Opening and closing buffer device, bistable permanent magnetic mechanism and monostable permanent magnetic mechanism

Abstract

The invention discloses an opening and closing buffer device of a permanent magnetic mechanism, which comprises a bidirectional buffer piece, a buffer piece mounting plate, a connecting rod and a buffer impact plate, and is characterized in that the bidirectional buffer piece is a buffer piece integrated with opening buffer and closing buffer; the buffer piece mounting plate is used for mounting and fixing the bidirectional buffer piece, and the buffer piece mounting plate is further fixedly connected with a permanent magnetic mechanism; the connecting rod penetrates through the buffer piece mounting plate and is fixedly connected with the buffer impact plate, and the connecting rod and the permanent magnetic mechanism metal pull rod are fixed and move synchronously; and the buffer impact plate is used for colliding with the bidirectional buffer piece during buffering. The switching-on and switching-off buffer device can achieve effective buffer in the later period of switching-on and switching-off of the permanent magnetic mechanism, and is simple in structure, small in size, low in cost and wide in application. The invention also discloses a bistable permanent magnetic mechanism and a monostable permanent magnetic mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of permanent magnet mechanisms, and in particular relates to an opening and closing buffer device of a permanent magnet mechanism, and a bistable permanent magnet mechanism and a monostable permanent magnet mechanism using the opening and closing buffer device. Background Art

[0002] The permanent magnet mechanism has a simple structure and high reliability, and has been widely used in vacuum circuit breakers at different voltage levels.

[0003] At present, most of the permanent magnet mechanisms in practical applications are not equipped with buffers, that is, the moving iron core and the static iron core or the cover plate are used for forced limiting.

[0004] At the end of the opening and closing of the permanent magnet mechanism, especially the permanent magnet mechanism in the fast closing or fast opening application scenarios, the higher mechanism speed will cause strong mechanical impact, which may easily cause serious closing bounce and opening rebound, which is not conducive to improving the life of the vacuum interrupter and the permanent magnet mechanism itself. Summary of the invention

[0005] The purpose of the present invention is to provide a permanent magnet mechanism opening and closing buffer device, which can achieve effective buffering in the later stage of opening and closing of the permanent magnet mechanism, and has a simple structure, small size, low cost and wide applicability.

[0006] In order to achieve the above object, the solution of the present invention is:

[0007] A switching buffer device for a permanent magnet mechanism comprises a bidirectional buffer, a buffer mounting plate, a connecting rod and a buffer impact plate, wherein the bidirectional buffer is a buffer that integrates switching buffer and switching buffer; the buffer mounting plate is used to install and fix the bidirectional buffer, and the buffer mounting plate is also fixedly connected to the permanent magnet mechanism; the connecting rod passes through the buffer mounting plate and is fixedly connected to the buffer impact plate, and the connecting rod is also fixed to the metal pull rod of the permanent magnet mechanism and moves synchronously; the buffer impact plate is used to collide with the bidirectional buffer when buffering.

[0008] The bidirectional buffer comprises 2 or n buffer units which are evenly arranged, where n>2; the buffer units are liquid buffers, gas buffers or elastic solid buffers.

[0009] The outer peripheral surface of the installation part of the above-mentioned bidirectional buffer is processed with threads, and a plurality of threaded holes matching with the installation threads of the bidirectional buffer are opened on the buffer installation plate to fix the bidirectional buffer.

[0010] A through hole for the connecting rod to pass through is provided at the center of the buffer component mounting plate.

[0011] The outer peripheral surface of the end of the connecting rod is processed with threads, and the buffer impact plate is installed on the end of the connecting rod.

[0012] The buffer component mounting plate is a metal plate or an insulating plate.

[0013] The above-mentioned buffer impact plate is a metal plate or an insulating plate, and the buffer impact plate is a circular plate or a special-shaped plate.

[0014] The connecting rod is a metal pull rod, and the connecting rod and the metal pull rod of the permanent magnet mechanism are the same metal rod or a combination of two metal rods.

[0015] After adopting the above scheme, the opening and closing buffer device provided by the present invention can effectively buffer the mechanism at the end of the opening and closing of the permanent magnet mechanism, thereby increasing the service life of the vacuum interrupter and the permanent magnet mechanism.

[0016] Another object of the present invention is to provide a bistable permanent magnet mechanism, which can achieve effective buffering in the later stage of opening and closing of the permanent magnet mechanism.

[0017] A bistable permanent magnet mechanism, comprising a lower magnetic yoke of the permanent magnet mechanism and a metal pull rod of the permanent magnet mechanism, and also comprising a switch-on and switch-off buffer device of the permanent magnet mechanism as described above;

[0018] The lower magnetic yoke of the permanent magnetic mechanism is fixedly connected to the buffer component mounting plate, and the bidirectional buffer component is also installed on the lower magnetic yoke of the permanent magnetic mechanism; the metal pull rod of the permanent magnetic mechanism is fixedly connected to the connecting rod.

[0019] After adopting the above scheme, the bistable permanent magnet mechanism provided by the present invention can achieve effective buffering at the end of the opening and closing of the permanent magnet mechanism, thereby increasing the service life of the vacuum interrupter and the permanent magnet mechanism.

[0020] Another object of the present invention is to provide a monostable permanent magnet mechanism, which can achieve effective buffering in the later stage of opening and closing of the permanent magnet mechanism.

[0021] A monostable permanent magnetic mechanism, comprising a permanent magnetic mechanism lower cover plate and a permanent magnetic mechanism metal pull rod, and also comprising the above-mentioned opening and closing buffer device of the permanent magnetic mechanism;

[0022] The lower cover plate of the permanent magnet mechanism is fixedly connected to the buffer component mounting plate, and the bidirectional buffer component is also installed on the lower cover plate of the permanent magnet mechanism; the metal pull rod of the permanent magnet mechanism is fixedly connected to the connecting rod.

[0023] After adopting the above scheme, the monostable permanent magnet mechanism provided by the present invention can achieve effective buffering at the end of the opening and closing of the permanent magnet mechanism, thereby increasing the service life of the vacuum interrupter and the permanent magnet mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the structure of the buffer device provided in an embodiment of the present application.

[0026] Figure 2 It is a top view of the buffer component mounting plate in the buffer device provided in the embodiment of the present application.

[0027] Figure 3 This is another top view of the buffer component mounting plate in the buffer device provided in an embodiment of the present application.

[0028] Figure 4 It is a schematic diagram of the installation of a bistable permanent magnet mechanism and a buffer device provided in an embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the installation of a monostable permanent magnet mechanism and a buffer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0031] It should be understood that the terms "first", "second", etc. in the claims, specification and drawings of the present application are used to distinguish different objects rather than to describe a specific order. The terms "include" and "comprise" used in the specification and claims of the present application indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0032] Figure 1 It is a structural schematic diagram of the closing and opening buffer device provided in an embodiment of the present application, including a bidirectional buffer, a buffer mounting plate 2, a connecting rod 3 and a buffer impact plate 4, wherein the bidirectional buffer is evenly installed on the buffer mounting plate 2 to provide a symmetrical closing and opening buffer force; the connecting rod 3 passes through the middle through hole of the buffer mounting plate 2 and is fixedly connected to the buffer impact plate 4.

[0033] According to some embodiments, the bidirectional buffer is a buffer that integrates an opening buffer and a closing buffer, and the impact end of the closing buffer is in opposite directions from the impact end of the opening buffer; the bidirectional buffer can be 2 or n (n>2) evenly arranged buffer units 1, and the buffer unit can be in the form of a liquid buffer, a gas buffer or an elastic solid buffer.

[0034] Figure 2 It is a top view of a buffer component mounting plate in a closing and opening buffer device provided in an embodiment of the present application, comprising a buffer component mounting plate 2, a buffer component mounting plate through hole 201 and two buffer unit mounting holes 202, wherein the buffer component mounting plate through hole 201 is arranged at the center of the buffer component mounting plate 2, and the two buffer unit mounting holes 202 are symmetrically arranged on the buffer component mounting plate 2. The outer peripheral surface of the mounting portion of the buffer unit is processed with threads, and the two buffer unit mounting holes 202 are both threaded holes matched with threads, for fixing the buffer unit.

[0035] According to some embodiments, the connecting rod 3 passes through the buffer mounting plate through hole 201 on the buffer mounting plate 2, and one end of the connecting rod 3 is processed with a thread on the outer peripheral surface and is fixedly connected to the buffer impact plate 4, which is used for colliding with the buffer impact plate 4 and the bidirectional buffer during buffering. The other end of the connecting rod 3 is fixed to the metal pull rod of the permanent magnet mechanism and moves synchronously. At the same time, the buffer mounting plate and the permanent magnet mechanism are kept fixedly connected by screws.

[0036] In order to select a suitable buffer strength, the number of buffer units can be adjusted as needed. The number of buffer unit mounting holes 202 is the same as the number of buffer units 1. The buffer mounting plate structure for mounting three buffer units is as follows: Figure 3 shown.

[0037] According to some embodiments, the buffer member mounting plate is a metal plate or an insulating plate.

[0038] According to some embodiments, the buffer impact plate is a metal plate or an insulating plate, and the buffer impact plate is a special-shaped plate such as a circular plate or a U-shaped plate.

[0039] Figure 4 It is an installation diagram of a bistable permanent magnet mechanism and a closing and opening buffer device provided in an embodiment of the present application, including a buffer unit 1, a buffer component mounting plate 2, a connecting rod 3, a buffer impact plate 4, a lower magnetic yoke 5 of the permanent magnet mechanism, a metal pull rod 6 of the permanent magnet mechanism, a moving iron core 7 of the permanent magnet mechanism, a permanent magnet 8, an upper magnetic yoke 9, a magnetic casing 10, a closing coil 11, a magnetic ring 12 and an opening coil 13.

[0040] The lower magnetic yoke 5 of the permanent magnetic mechanism is provided with a plurality of through holes for installing the buffer unit 1. The buffer component mounting plate 2 is fixedly connected to the lower magnetic yoke 5 of the permanent magnetic mechanism by screws. The connecting rod 3 is fixedly connected to the metal pull rod 6 of the permanent magnetic mechanism.

[0041] according to Figure 4 As shown, when the permanent magnet mechanism opens, the permanent magnet mechanism moving iron core 7 drives the permanent magnet mechanism metal pull rod 6, the connecting rod 3, and the buffer impact plate 4 to move in the opening direction. At the end of the mechanism opening, the permanent magnet mechanism moving iron core 7 contacts the buffer unit 1, and under the action of the buffer unit 1, it achieves smooth deceleration until it stops, completing a closing buffer action. At the same time, the buffer impact plate 4 moves to the opening position and disengages from the buffer unit 1, so that the buffer unit 1 can be reset and prepare for the next closing buffer.

[0042] Similarly, when the permanent magnet mechanism is closed, the permanent magnet mechanism moving iron core 7 drives the permanent magnet mechanism metal pull rod 6, connecting rod 3, and buffer impact plate 4 to move in the closing direction. At the end of the permanent magnet mechanism closing, the closing buffer impact plate 4 contacts the buffer unit 1, and the mechanism is decelerated smoothly until it stops under the action of the buffer unit 1, completing a closing buffer action. At the same time, the permanent magnet mechanism moving iron core 7 is separated from the buffer unit 1, so that the buffer unit 1 can be reset and prepare for the next opening buffer.

[0043] According to some embodiments, the connecting rod 3 is a metal pull rod, and the connecting rod 3 and the permanent magnet mechanism metal pull rod 6 can be the same metal rod or a combination of two metal rods.

[0044] Figure 5 It is an installation diagram of a monostable permanent magnet mechanism and a closing and opening buffer device provided in an embodiment of the present application, including a buffer unit 1, a buffer component mounting plate 2, a connecting rod 3, a closing buffer impact plate 4, a permanent magnet mechanism metal pull rod 6, a permanent magnet mechanism moving iron core 7, a permanent magnet 8, an upper magnetic yoke 9, a magnetic shell 10, a magnetic ring 12, a permanent magnet mechanism lower cover 14, a closing spring 15 and a coil 16.

[0045] The lower cover plate 14 of the permanent magnet mechanism is provided with a plurality of through holes for mounting the buffer unit 1. The buffer component mounting plate 2 is fixedly connected to the lower cover plate 14 of the permanent magnet mechanism by screws. The connecting rod 3 is fixedly connected to the metal pull rod 6 of the permanent magnet mechanism. The working principle of the buffer device is similar to Figure 4 The opening and closing buffering principle of the bistable permanent magnet mechanism is the same as that of the bistable permanent magnet mechanism, which will not be repeated here.

[0046] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. At the same time, changes or deformations made by those skilled in the art based on the ideas of the present application, the specific implementation methods and the scope of application of the present application, all belong to the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. A closing and opening buffer device of a permanent magnet mechanism, characterized in that: It includes a bidirectional buffer, a buffer mounting plate, a connecting rod and a buffer impact plate, wherein the bidirectional buffer is a buffer integrated with opening buffer and closing buffer; the buffer mounting plate is used to install and fix the bidirectional buffer, and the buffer mounting plate is also fixedly connected to the permanent magnet mechanism; the connecting rod passes through the buffer mounting plate and is fixedly connected to the buffer impact plate, and the connecting rod is also fixed to the metal pull rod of the permanent magnet mechanism and moves synchronously; the buffer impact plate is used to collide with the bidirectional buffer during buffering.

2. The opening and closing buffer device of the permanent magnetic mechanism according to claim 1, characterized in that: The bidirectional buffer comprises 2 or n buffer units which are evenly arranged, where n>2; the buffer units are liquid buffers, gas buffers or elastic solid buffers.

3. The opening and closing buffer device of the permanent magnetic mechanism according to claim 1, characterized in that: The outer peripheral surface of the installation part of the bidirectional buffer is processed with threads, and a plurality of threaded holes matching with the installation threads of the bidirectional buffer are opened on the buffer installation plate to fix the bidirectional buffer.

4. The opening and closing buffer device of the permanent magnetic mechanism according to claim 1, characterized in that: A through hole for the connecting rod to pass through is provided at the center of the buffer component mounting plate.

5. The opening and closing buffer device of the permanent magnetic mechanism according to claim 1, characterized in that: The outer peripheral surface of the end of the connecting rod is processed with threads, and the buffer impact plate is installed at the end of the connecting rod.

6. The opening and closing buffer device of the permanent magnetic mechanism according to claim 1, characterized in that: The buffer component mounting plate is a metal plate or an insulating plate.

7. The opening and closing buffer device of the permanent magnetic mechanism according to claim 1, characterized in that: The buffer impact plate is a metal plate or an insulating plate, and the buffer impact plate is a circular plate or a special-shaped plate.

8. The opening and closing buffer device of the permanent magnetic mechanism according to claim 1, characterized in that: The connecting rod is a metal pull rod, and the connecting rod and the metal pull rod of the permanent magnet mechanism are the same metal rod or a combination of two metal rods.

9. A bistable permanent magnet mechanism, characterized in that: It comprises a lower magnetic yoke of a permanent magnetic mechanism and a metal pull rod of the permanent magnetic mechanism, and also comprises a closing and opening buffer device of the permanent magnetic mechanism as claimed in any one of claims 1 to 8; The lower magnetic yoke of the permanent magnetic mechanism is fixedly connected to the buffer component mounting plate, and the bidirectional buffer component is also installed on the lower magnetic yoke of the permanent magnetic mechanism; the metal pull rod of the permanent magnetic mechanism is fixedly connected to the connecting rod.

10. A monostable permanent magnet mechanism, characterized in that: It comprises a lower cover plate of a permanent magnetic mechanism and a metal pull rod of the permanent magnetic mechanism, and also comprises a closing and opening buffer device of the permanent magnetic mechanism as claimed in any one of claims 1 to 8; The lower cover plate of the permanent magnet mechanism is fixedly connected to the buffer component mounting plate, and the bidirectional buffer component is also installed on the lower cover plate of the permanent magnet mechanism; the metal pull rod of the permanent magnet mechanism is fixedly connected to the connecting rod.

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