CN211238090U

CN211238090U - Permanent magnet driving module and vacuum circuit breaker applying same

Info

Publication number: CN211238090U
Application number: CN202020158588.4U
Authority: CN
Inventors: 陈士科; 刘志国; 侯晓亮; 王俊; 宋彪
Original assignee: Tonghao Changsha Rail Traffic Control Technology Co ltd
Current assignee: Tonghao Changsha Rail Traffic Control Technology Co ltd
Priority date: 2020-02-10
Filing date: 2020-02-10
Publication date: 2020-08-11
Anticipated expiration: 2030-02-10

Abstract

The utility model discloses a permanent magnetism drive module and vacuum circuit breaker who uses thereof, including installing at inside permanent magnetic mechanism, input drive shaft, output drive shaft, connecting rod and the pull rod of same frame, permanent magnetic mechanism is fixed in the upper portion frame of input drive shaft, and input drive shaft and output drive shaft rotate the assembly respectively in the frame of connecting rod both sides, and the pull rod is located the top of connecting rod. The utility model discloses a transmission mechanism has been optimized to permanent magnetism drive module, make functional unit such as permanent magnetism mechanism, the separating brake spring, buffer and permanent magnetism the control unit reasonable, compact arranges in the frame, transmission efficiency has not only been improved, and the space has still been practiced thrift, the material has been saved, manufacturing cost is reduced, the reliability of action has been improved even more, through above reasonable, compact arranging, no matter make permanent magnetism drive module width, height, especially, the size of degree of depth direction has all been accomplished minimumly, the transmission efficiency of its applied vacuum circuit breaker power take off and the reliability of action have been improved.

Description

Permanent magnet driving module and vacuum circuit breaker applying same

Technical Field

The utility model belongs to electrified railway high voltage distribution system vacuum circuit breaker technique, concretely relates to miniaturized permanent magnetism drive module and vacuum circuit breaker who uses thereof.

Background

At present, most of single-pole outdoor high-voltage vacuum circuit breakers for electrified railways adopt spring mechanisms, are used as an independent module and are arranged on the side surface of a circuit breaker beam, and the volume is large; still dispose the outdoor high-pressure vacuum circuit breaker of monopole of permanent magnetism mechanism, its permanent magnetism mechanism or with the same configuration in the side of circuit breaker crossbeam of spring mechanism, perhaps dispose the below at the circuit breaker crossbeam, lead to whole vacuum circuit breaker and drive structure dispersion like this, and be unfavorable for carrying out quick maintenance to vacuum circuit breaker and change.

Disclosure of Invention

The utility model provides a technical problem be: the utility model provides a miniaturized permanent magnetism drive module and vacuum circuit breaker of using thereof to there is the structure dispersion in current vacuum circuit breaker to lead to vacuum circuit breaker to be unfavorable for the problem of maintenance.

The utility model comprises the following technical scheme:

the permanent magnet driving module comprises a permanent magnet mechanism 2, an input driving shaft 4, an output driving shaft 11, a connecting rod 5 and a contact pull rod 16, wherein the permanent magnet mechanism 2, the input driving shaft 4, the output driving shaft 11, the connecting rod 5 and the contact pull rod 16 are arranged in the same rack 1, the permanent magnet mechanism 2 is fixed on the rack on the upper part of the input driving shaft 4, the input driving shaft 4 and the output driving shaft 11 are respectively and rotatably assembled on the racks on two sides of the connecting rod 5, and the contact pull;

the mechanism driving shaft 2-1 of the permanent magnetic mechanism 2 is hinged with a first crank arm 4-1 fixed on an input driving shaft 4, a second crank arm 4-2 hinged with one end of a connecting rod 5 is further fixedly arranged on the input driving shaft 4, the other end of the connecting rod 5 is hinged with a crank arm structure fixed on an output driving shaft 11, the crank arm structure on the output driving shaft 11 is hinged with one end of a contact pull rod 16, and the contact pull rod 16 is driven by the permanent magnetic mechanism to control the action of a contact in the vacuum arc-extinguishing chamber.

Further, the crank arm structure on the output driving shaft 11 comprises a third crank arm 11-1 and a fifth crank arm 11-3, wherein the third crank arm 11-1 is hinged with the connecting rod 5, and the fifth crank arm 11-3 is hinged with the contact pull rod 16.

Further, the utility model discloses a permanent magnetism drive module still includes buffer 8, buffer 8 is fixed in the frame of third turning arm 11-1 below, the bottom setting of third turning arm 11-1 is pressed gyro wheel 10 on buffer 8 all the time.

Preferably, the buffer 8 is an oil buffer.

Further, the utility model discloses a permanent magnetism drive module is still including fixing the separating brake spring 14 in output drive shaft 11 one side frame, still be equipped with the fourth turning arm 11-2 that corresponds separating brake spring 14 on the output drive shaft 11, the articulated connecting spring pull rod 13 of tip of fourth turning arm 11-2, separating brake spring 14 one end is fixed, and the other end is connected with spring pull rod 13.

Further, the permanent magnet control unit 17 of the permanent magnet mechanism 2 is arranged in parallel with the permanent magnet mechanism 2 and fixed on the frame 1.

The utility model also discloses a vacuum circuit breaker that permanent magnet drive module used, including sealing utmost point post module 100, permanent magnet drive module 200 and crossbeam 300 admittedly, seal utmost point post module 100 admittedly and fix on crossbeam 300, permanent magnet drive module 200 fixes inside crossbeam 300, the inside contact pull rod of permanent magnet drive module 200 is connected with the interior control contact of sealing utmost point post module 100 admittedly.

The utility model discloses following beneficial effect has:

the utility model provides a permanent magnetism drive module adopts permanent magnetism mechanism as the power supply of vacuum circuit breaker switching-on operation, and permanent magnetism mechanism arranges in the upper portion of input drive shaft, has both reduced the size of whole module width direction, has reduced the height again; the input driving shaft and the output driving shaft are arranged on two sides of the connecting rod, so that the size of the module in the height direction is reduced; the connecting rod is arranged between the input driving shaft and the output driving shaft, so that the size in the width direction is reduced; an oil buffer with smaller volume is used, the size of the module in the height direction cannot be increased, and the opening spring is arranged on the other side of the output driving shaft; the permanent magnet mechanism and the permanent magnet control unit are arranged in parallel at the left and right in the depth direction, so that the size of the module in the depth direction is greatly reduced.

The utility model discloses optimize permanent magnet drive module's transmission mode, realize permanent magnetic mechanism respectively through fixed a plurality of crank arm structures that set up in input drive axle and output drive epaxial respectively, the power transmission of oil buffer and separating brake spring to the pull rod, the pull rod is as permanent magnet drive module and vacuum circuit breaker's the connecting piece of main conductive loop part, be connected with the inside control contact of vacuum interrupter through the insulating pull rod in the main conductive loop, the pull rod is when closing a floodgate, give contact spring and vacuum interrupter with power output, give permanent magnetic mechanism module with contact spring's potential energy transmission during the separating brake.

The utility model discloses a miniaturized permanent magnetism drive module that vacuum circuit breaker adopted can directly dispose in the crossbeam of circuit breaker, has reduced vacuum circuit breaker's whole size, has saved drive module and vacuum interrupter's middle transmission link, and the design is direct drive, save material and space, reduced manufacturing cost, further improved permanent magnetism drive module's transmission efficiency, improved the reliability of vacuum circuit breaker action.

To sum up, the utility model discloses a transmission mechanism has been optimized to permanent magnetism drive module, make functional unit such as permanent magnetism mechanism, separating brake spring, buffer and permanent magnetism the control unit reasonable, compact arrange in the frame, form a miniaturized module, not only improved transmission efficiency, still practiced thrift the space, saved the material, manufacturing cost is reduced, the reliability of action has been improved even more, through above reasonable, compact arranging, no matter width, height, especially the size of degree of depth direction has all been accomplished minimumly to make permanent magnetism drive module, the transmission efficiency of its applied vacuum circuit breaker power take off and the reliability of action have been improved.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

Fig. 1 is a front view of an internal structure of a permanent magnet driving module according to a first embodiment.

Fig. 2 is a side view of the internal structure of a permanent magnet driving module according to a first embodiment.

Fig. 3 shows a vacuum circuit breaker mounting structure according to a second embodiment.

Reference numbers in the figures: 1. a frame, 2, a permanent magnet mechanism, 2-1, a mechanism driving shaft, 3, a first pin shaft, 4, an input driving shaft, 4-1, a first crank arm, 4-2, a second crank arm, 5, a connecting rod, 6, a second pin shaft, 7, a third pin shaft, 8, a buffer, 9, a fourth pin shaft, 10, a roller, 11, an output driving shaft, 11-1, a third crank arm, 11-2, a fourth crank arm, 11-3, a fifth crank arm, 12, a fifth pin shaft, 13, a spring pull rod, 14, a brake separating spring, 15, a sixth pin shaft, 16, a contact pull rod and 17, a permanent magnet control unit,

100-embedded pole module, 200-permanent magnet driving module and 300-beam.

Detailed Description

Example one

Referring to fig. 1 and fig. 2, the illustration shows a specific embodiment of the permanent magnet driving module of the present invention, which specifically includes a frame 1, and a permanent magnet mechanism 2, a first pin 3, an input driving shaft 4, a connecting rod 5, a second pin 6, a third pin 7, a buffer 8, a fourth pin 9, a roller 10, an output driving shaft 11, a fifth pin 12, a spring pull rod 13, a separating brake spring 14, a sixth pin 15, a contact pull rod 16, and a permanent magnet control unit 17, all installed in the frame 1. Through the optimally designed connecting rod transmission mechanism and the reasonable and compact arrangement of all the functional units, the permanent magnet driving module achieves the minimum.

Specifically, the input drive shaft 4 and the output drive shaft 11 are arranged in parallel and are respectively rotatably assembled in the frame 1, and a plurality of crank arm structures are respectively and fixedly arranged on the input drive shaft 4 and the output drive shaft 11, that is, the crank arm structures can freely swing by taking the respective drive shafts as axes, and in this embodiment, the crank arm structures are a first crank arm 4-1 and a second crank arm 4-2 fixedly arranged on the input drive shaft 4, and a third crank arm 11-1, a fourth crank arm 11-2 and a fifth crank arm 11-3 fixedly arranged on the output drive shaft 11.

The permanent magnet mechanism 2 is used as a power source for switching-on operation, is arranged above the input driving shaft 4 and is fixedly connected with the rack 1, and a mechanism driving shaft 2-1 on the permanent magnet mechanism is hinged with a first crank arm 4-1 on the input driving shaft 4 through a first pin shaft 3; a second crank arm 4-2 on the input driving shaft 4 is hinged with one end of a connecting rod 5 through a second pin shaft 6; the other end of the connecting rod 5 is hinged with a third crank arm 11-1 on an output driving shaft 11 through a third pin shaft 7; the fifth crank arm 11-3 on the output driving shaft 11 is hinged with the bottom of the contact pull rod 16 through a sixth pin shaft 15, the contact pull rod 16 is a driving output part of the permanent magnet driving module, the power of the permanent magnet mechanism 2 is transmitted to the contact pull rod 16 through the connecting rod 5, the input driving shaft and the crank arm mechanisms on the output driving shaft, the contact pull rod 16 realizes reciprocating motion, and the contact pull rod 16 is driven by the permanent magnet mechanism to control the contact in the vacuum arc extinguish chamber to act.

In the embodiment, the permanent magnet mechanism 2 is only responsible for providing power for the vacuum circuit breaker when switching on, a switching-off spring 14 is also arranged in the frame 1 as a power source for switching-off operation, the switching-off spring 14 is arranged above the outer side of the output driving shaft 11, one end of the output driving shaft 11 is fixed with the frame 1, a fourth crank arm 11-2 on the output driving shaft 11 is hinged with one end of a spring pull rod 13 through a fifth pin shaft 12, the other end of the spring pull rod 13 passes through a brake separating spring 14 to be fixedly connected with the upper end of the brake separating spring 14, the lower end of the brake separating spring 14 is fixed on the frame 1, during the closing operation, while the permanent magnetic mechanism 2 drives the contact pull rod 16 to perform the closing operation, the opening spring 14 is compressed for energy storage, when opening, the elastic potential energy of the opening spring 14 is released, the crank arm structure on the output driving shaft drives the pull rod to open the brake and simultaneously drives the permanent magnet mechanism to return. In practical application, the opening spring 14 may be disposed at the upper end of the output driving shaft 11, or may be disposed at the lower end of the output driving shaft 11; when the opening spring 14 is located above the output driving shaft 11, the opening spring 14 is a compression spring and stores energy through compression, and when the opening spring 14 is located below the output driving shaft 11, the opening spring 14 is an extension spring and stores energy through extension.

The bottom of a third crank arm 11-1 on an output driving shaft 11 is rotatably assembled with a roller 10 through a fourth pin shaft 9, an oil buffer 8 is fixedly installed on a rack below the roller 10, the roller 10 presses the oil buffer along with a third pipe wall 11-1 in a brake-off state, and the oil buffer 8 is utilized to realize the in-place limiting and buffer protection of brake-off. The oil buffer is smaller and more exquisite than the buffer structure of other mediums, is favorable to the utility model discloses a permanent magnetism drive module is miniaturized.

Specifically, as shown in fig. 2, the permanent magnet control unit 17 of the permanent magnet mechanism 2 is arranged in parallel with the permanent magnet mechanism 2 and fixed to the frame 1. In the embodiment, the permanent magnet mechanism 2 is arranged up and down with the input driving shaft 4 as a power source for closing operation, so that the size in the width direction is reduced; the input driving shaft 4 and the output driving shaft 11 are arranged on two sides of the connecting rod 5, so that the size in the height direction is reduced; the contact pull rod 16 is arranged between the input driving shaft 4 and the output driving shaft 11, and the size in the width direction is reduced; in order not to increase the dimension in the height direction, a miniaturized oil damper 8 is adopted, and the opening spring 14 is arranged above the outer side of the output driving shaft 11, and can also be arranged below; in the depth direction, the permanent magnet control unit 17 and the permanent magnet mechanism 2 are arranged left and right, so that the size in the depth direction is greatly reduced.

The following describes in detail the operation of the permanent magnet driving module in the closing and opening states of the vacuum circuit breaker in this embodiment.

During closing operation, a mechanism driving shaft 2-1 on the permanent magnetic mechanism 2 moves downwards, and a first crank arm 4-1 rotates clockwise around the center of an input driving shaft 4 through a first pin shaft 3 to drive the input driving shaft 4 and a second crank arm 4-2 thereon to rotate clockwise; the second crank arm 4-2 drives the connecting rod 5 to move upwards through a second pin shaft 6; the connecting rod 5 enables the third crank arm 11-1 to rotate anticlockwise at the center of the output driving shaft 11 through a third pin shaft 7, and drives the output driving shaft 11 and a fourth crank arm 11-2 and a fifth crank arm 11-3 thereon to rotate anticlockwise; the fourth crank arm 11-2 enables the spring pull rod 13 to move downwards through the fifth pin shaft 12, the upper end of the spring pull rod 13 is brought to the upper end of the opening spring 14 to move downwards, and the opening spring 14 is compressed; the fifth crank arm 11-3 enables the contact pull rod 16 to move upwards through a sixth pin shaft 15; the third crank arm 11-1 drives the roller 10 to move upwards through the fourth pin shaft 9, and the upper end of the oil buffer 8 is released; when the switch-on terminal position is reached, the switch-on terminal position is kept by the attraction force of the permanent magnetic field in the permanent magnetic mechanism 2, and the process completes the closing of the movable contact and the fixed contact of the vacuum arc extinguish chamber and the energy storage of the switch-off spring and the contact spring.

When the brake is switched off, the attraction force of a permanent magnetic field in the permanent magnetic mechanism 2 is suddenly reduced to a critical value, firstly, the contact pull rod 16 is driven to move downwards by the potential energy of the contact return spring, and the fifth crank arm 11-3 is driven to rotate clockwise by the center of the output driving shaft 11 through the sixth pin shaft 15; secondly, the spring pull rod 13 moves upwards by means of the elastic potential energy of the opening spring 14, and the fourth crank arm 11-2 rotates clockwise by the center of the output driving shaft 11 through the fifth pin shaft 12; the fourth crank arm 11-2 and the fifth crank arm 11-3 drive the output driving shaft 11 and the third crank arm 11-1 thereon to rotate clockwise; the third crank arm 11-1 rotates clockwise by the output driving shaft 11, on one hand, the fourth pin shaft 9 drives the roller 10 to move downwards, and after passing through a section of gap, the roller is contacted with the upper end of the oil buffer 8 and drives the oil buffer to move downwards; on one hand, the connecting rod 5 is driven to move downwards by the third pin shaft 7; the connecting rod 5 enables the second crank arm 4-2 to rotate anticlockwise around the center of the input driving shaft 4 through a second pin shaft 6, and drives the input driving shaft 4 and the first crank arm 4-1 thereon to rotate anticlockwise; the first crank arm 4-1 enables a mechanism driving shaft 2-1 on the permanent magnet mechanism 2 to move upwards through a first pin shaft 3; when the opening terminal position is reached, the opening position is limited by the internal structure of the permanent magnet mechanism 2, and the opening position can also be limited by the oil buffer 8.

The permanent magnet mechanism 2 is a common component in the existing high-voltage vacuum circuit breaker, and those skilled in the art can understand the internal structure and the working principle of the permanent magnet mechanism without any doubt, and the specific structure of the permanent magnet mechanism 2 and the permanent magnet control unit 17 thereof is not described herein in detail in this embodiment.

Example two

Referring to fig. 3 in combination, the diagram shows a specific implementation of a vacuum circuit breaker using a permanent magnet driving module in the first embodiment, which includes an embedded pole module 100, a permanent magnet driving module 200, and a cross beam 300, where the embedded pole module 100 is fixed on the cross beam 300 by a detachable connecting member such as a screw, the permanent magnet driving module 200 is the permanent magnet driving module in the first embodiment, a rack of the permanent magnet driving module is fixed inside the cross beam 300, and a contact pull rod inside the permanent magnet driving module 200 is connected to a control contact inside the embedded pole module 100. The solid-sealed polar pole module 100 generally comprises a vacuum arc extinguish chamber solid-sealed column, an upper wiring board, a lower wiring board, a supporting insulating cylinder, a polar pole mounting plate and other members, the vacuum arc extinguish chamber solid-sealed column is fixed on the upper portion of the supporting insulating cylinder, the bottom of the supporting insulating cylinder is fixedly provided with the polar pole mounting plate, and a whole solid-sealed structure is formed. The upper end and the lower end of the vacuum arc extinguish chamber sealing column are respectively provided with an upper wiring board and a lower wiring board, a main conductive circuit in the vacuum arc extinguish chamber drives a contact to realize switching-off and switching-on of a circuit between the upper wiring board and the lower wiring board through an insulating pull rod, and the insulating pull rod penetrates through the beam from the sealing pole module 100 to be connected with a contact pull rod 16 in the permanent magnet driving module 200, so that switching-off and switching-on control of the vacuum circuit breaker is realized. The structure inside the vacuum arc extinguish chamber sealing column can refer to the existing vacuum circuit breaker, and this embodiment aims to explain the mounting and connecting structure between the sealing pole module 100 and the permanent magnet driving module 200 and the beam 300, and the structure inside the vacuum arc extinguish chamber sealing column is not described herein.

The above embodiments describe the basic principles and main features of the present invention and the advantages of the present invention, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for the description of the specific working principle of the present invention, and without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, and these changes and improvements all fall into the scope of the present invention, and the protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Permanent magnetism drive module, its characterized in that: the device comprises a permanent magnet mechanism (2), an input driving shaft (4), an output driving shaft (11), a connecting rod (5) and a contact pull rod (16) which are arranged in the same rack (1), wherein the permanent magnet mechanism (2) is fixed on the rack at the upper part of the input driving shaft (4), the input driving shaft (4) and the output driving shaft (11) are respectively assembled on the racks at two sides of the connecting rod (5) in a rotating way, and the contact pull rod (16) is positioned above the connecting rod (5);

the mechanism driving shaft (2-1) of the permanent magnetic mechanism (2) is hinged to a first connecting lever (4-1) fixed on the input driving shaft (4), a second connecting lever (4-2) hinged to one end of a connecting rod (5) is fixedly arranged on the input driving shaft (4), the other end of the connecting rod (5) is hinged to a connecting lever structure fixed on the output driving shaft (11) and hinged to one end of a contact pull rod (16) through the connecting lever structure on the output driving shaft (11), and the contact pull rod (16) is driven by the permanent magnetic mechanism to control the action of a contact inside the vacuum arc-extinguishing chamber.

2. The permanent magnet drive module of claim 1, wherein: the crank arm structure on the output driving shaft (11) comprises a third crank arm (11-1) and a fifth crank arm (11-3), wherein the third crank arm (11-1) is hinged with the connecting rod (5), and the fifth crank arm (11-3) is hinged with the contact pull rod (16).

3. The permanent magnet drive module of claim 1, wherein: the buffer device is characterized by further comprising a buffer (8), wherein the buffer (8) is fixed on the rack below the third crank arm (11-1), and a roller (10) which is pressed on the buffer (8) all the time is arranged at the bottom of the third crank arm (11-1).

4. A permanent magnet drive module according to claim 3, characterized in that: the buffer (8) is an oil buffer.

5. A permanent magnet drive module according to claim 3, characterized in that: still including fixing separating brake spring (14) in output drive shaft (11) one side frame, still be equipped with fourth crank arm (11-2) that correspond separating brake spring (14) on output drive shaft (11), the tip of fourth crank arm (11-2) articulates and connects spring pull rod (13), separating brake spring (14) one end is fixed, and the other end is connected with spring pull rod (13).

6. The permanent magnet drive module of claim 1, wherein: the permanent magnet control unit (17) of the permanent magnet mechanism (2) and the permanent magnet mechanism (2) are arranged in parallel and fixed on the frame (1).

7. Vacuum circuit breaker for permanent magnet drive module applications according to any of claims 1-6, characterized in that: the solid-sealed pole module (100) is fixed on the cross beam (300), the permanent magnet driving module (200) is fixed inside the cross beam (300), and a contact pull rod inside the permanent magnet driving module (200) is connected with a control contact inside the solid-sealed pole module (100).