CN216311626U - Permanent-magnet bidirectional bistable operating mechanism - Google Patents
Permanent-magnet bidirectional bistable operating mechanism Download PDFInfo
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- CN216311626U CN216311626U CN202122531492.5U CN202122531492U CN216311626U CN 216311626 U CN216311626 U CN 216311626U CN 202122531492 U CN202122531492 U CN 202122531492U CN 216311626 U CN216311626 U CN 216311626U
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- permanent magnet
- driving frame
- synchronous driving
- operating mechanism
- iron core
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- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 230000002457 bidirectional effect Effects 0.000 title abstract description 5
- 230000001360 synchronised effect Effects 0.000 claims abstract description 52
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000003068 static effect Effects 0.000 claims description 12
- 230000002441 reversible effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 2
- 230000005389 magnetism Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 8
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a permanent magnet bidirectional bistable operating mechanism which comprises a bistable permanent magnet, a synchronous driving frame and a plurality of screw rods penetrating through the synchronous driving frame, wherein the screw rods are in clearance fit with the synchronous driving frame, two end parts of an iron core of the bistable permanent magnet respectively penetrate out of the synchronous driving frame and are connected with the synchronous driving frame through locking pieces, a plurality of screw rods are respectively provided with a limiting assembly, the synchronous driving frame is provided with a mounting groove matched with the limiting assembly, the mounting groove is provided with a through hole in the axial direction relative to the screw rods, the limiting assembly comprises a pressure spring and a gasket, the pressure spring and the gasket are sleeved on the screw rods and are positioned in the mounting groove, and two groups of gaskets are respectively abutted against two ends of the pressure spring. The utility model has simple structure, convenient installation, high synchronism and stable operation.
Description
Technical Field
The utility model relates to the technical field of control of a withstanding voltage device, in particular to a permanent magnet bidirectional bistable operating mechanism.
Background
In the field of high and low voltage switches, two switch operating mechanisms are generally adopted. One is a spring energy storage type operating mechanism, and the other is an electromagnetic operating mechanism. The two operating mechanisms are far lower than the permanent magnet operating mechanism advocated for use at home and abroad only in terms of reliability, because the permanent magnet operating mechanism only has one moving part.
At present, electric products utilizing a vacuum arc extinguish chamber mainly have two categories at home and abroad: vacuum contactors and high voltage vacuum circuit breakers. The two products have good on-off performance and stable and reliable electric service life, and are widely applied to important places with harsh working conditions. For example, a VM1 model permanent magnet actuator vacuum circuit breaker manufactured by ABB corporation and a domestic CKJ5 series vacuum circuit breaker.
The prior Chinese patent with the patent number of ZL201820733087.7 and the patent name of dual-power automatic switching device discloses a dual-power automatic switching device, which comprises a bistable permanent magnet and two or four groups of vacuum tubes, wherein each group is two vacuum tubes of the same type, and is characterized in that: the lead screw is in clearance fit with the synchronous driving frame; two end parts of the iron core of the bistable permanent magnet electromagnet respectively penetrate out of the synchronous driving frame and are fastened through nuts; two end parts of each screw rod are respectively in threaded connection with the moving contacts of the corresponding vacuum tubes, one end of each screw rod is provided with a length adjusting nut, and the total length H of the adjusted screw rod and the two corresponding moving contacts is equal to L-K, wherein L is the distance between the fixed contacts of the two vacuum tubes, and K is the distance between the vacuum tubes; the two end parts of each screw rod are respectively sleeved with a pressure spring, one end part of each pressure spring is abutted to the synchronous driving frame, the other end part of each pressure spring is abutted to the movable contact of the vacuum tube, after the coil is electrified, the iron core can be driven to drive the synchronous driving frame to move towards one side, the pressure spring on the side is compressed, the movable contact and the static contact of the vacuum tube on the side are driven by the pressure spring to be closed, and meanwhile, the movable contact and the static contact of the vacuum tube corresponding to the other side can be driven by the screw rods to be disconnected. The moving distance X of the iron core is K + C, wherein K is the contact opening distance of the vacuum tube, C is the pressure overtravel, and the pressure overtravel is the stroke required by the pressure spring to apply certain pressure to the close contact of the moving contact and the static contact. Pressure springs are sleeved at two ends of a screw rod, compression ratios of the pressure springs at the two ends are slightly different, so that synchronism is poor when moving contacts of vacuum tubes at the two ends of the screw rod move, and use of the vacuum tubes is affected.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a permanent magnetic bi-directional bi-stable operating mechanism with simple structure, convenient installation and high synchronism.
Aiming at the problems, the following technical scheme is provided: a permanent magnet bidirectional bistable operating mechanism comprises a bistable permanent magnet, a synchronous driving frame and a plurality of lead screws penetrating through the synchronous driving frame, wherein the lead screws are in clearance fit with the synchronous driving frame, two end parts of an iron core of the bistable permanent magnet respectively penetrate out of the synchronous driving frame and are connected with the synchronous driving frame through locking pieces, a plurality of lead screws are respectively provided with a limiting assembly, the synchronous driving frame is provided with a mounting groove matched with the limiting assembly, the mounting groove is provided with a through hole in the axial direction relative to the lead screw, the limiting assembly comprises a pressure spring and a gasket, the pressure spring and the gasket are sleeved on the lead screw and are positioned in the mounting groove, the gasket is provided with two groups of gaskets which are respectively abutted against two ends of the pressure spring, and the synchronous driving frame drives the gasket to compress the pressure spring towards one side under the state that the bistable permanent magnet drives the synchronous driving frame to displace towards the one side, and applying pressure to the screw rod to realize the tight closing of the moving contact and the static contact of the vacuum tube on the side.
In the structure, the two ends of the screw rod are respectively connected with a vacuum tube, when a coil of the bistable permanent magnet electromagnet is electrified, the iron core can be driven to drive the synchronous driving frame to drive the screw rod to move towards one side, the screw rod drives the moving contact and the fixed contact of the vacuum tube on the side to be closed, meanwhile, the screw rod can drive the moving contact and the fixed contact of the vacuum tube on the other side to be disconnected, when the current direction of the coil is changed, the iron core can move towards the other side, so that the vacuum tube on the side is closed, the vacuum tubes on the two sides are driven by the bistable permanent magnet electromagnet to be always in a closed state and interlocked, therefore, the utility model can be simply controlled by changing the current direction of direct current used by the coil, the conversion time is extremely short, and uninterrupted load is realized. The pressure spring is arranged to apply pressure overtravel to the closed moving contact and the closed static contact, and the pressure overtravel is a stroke required by the pressure spring to apply certain pressure to the close contact of the moving contact and the static contact. The distance of the displacement of the iron core is equal to the distance between the opening distance of the vacuum tube and the pressure overtravel, so that when the iron core moves towards one side to the opening distance of the vacuum tube, the moving contact and the fixed contact at the side are in a closed state, and then the iron core continuously moves for the distance of the pressure overtravel value, so that the inner wall of the mounting groove of the synchronous driving frame compresses the pressure spring, the tightness of the closing of the moving contact and the fixed contact of the vacuum tube in the displacement direction of the iron core is increased, the reliability of the closing of the vacuum tube is improved, and the safety of the vacuum tube is improved. Compared with the conventional dual-power automatic switching device, the dual-power automatic switching device has the advantages that the pressure spring is arranged, so that the state change synchronism of the vacuum tubes at the two ends of the screw rod is higher, and the stability and the reliability of the dual-power automatic switching device are improved. The synchronous driving frame can drive the plurality of screw rods to act simultaneously, so that the synchronism among all groups of vacuum tubes is improved, and the reliability of the vacuum tube feeding device is improved. The gasket can be arranged to better facilitate the driving of the pressure spring on the inner wall of the mounting groove to compress, and the stability of the pressure over-travel implementation of the utility model is improved, so that the stability and the reliability of the utility model are further improved.
The utility model is further provided that two ends of the screw rod are respectively provided with a first thread and a second thread, and the first thread and the second thread are arranged in opposite directions.
By adopting the structure, the opening distance of the vacuum tubes at the two ends of the screw rod can be adjusted simultaneously by rotating the screw rod, so that the use convenience of the vacuum tube is improved, and the application range of the vacuum tube can be expanded.
The utility model is further arranged in that one end of the screw rod is provided with a fixed block which is in clearance fit with the through hole, one end of the fixed block is abutted against the corresponding gasket, and the section of the fixed block is hexagonal.
In the structure, the stability of the gasket at one corresponding end of the fixing block can be improved by arranging the fixing block, and the pressure spring can be compressed by being conveniently matched with the synchronous driving frame, so that the stability of the pressure spring is improved. The cross section of the fixing block is hexagonal, so that a user can conveniently rotate the screw rod by matching the wrench with the fixing block, and the convenience of adjusting the opening distance of the vacuum tube is further improved.
The utility model is further provided that one end of the screw rod opposite to the fixed block is provided with an adjusting nut which is in clearance fit with the through hole, and one end of the adjusting nut is abutted against the corresponding gasket.
In the structure, the adjusting nut is arranged, so that the stability of the gasket at one corresponding end of the adjusting nut can be improved, and the pressure spring can be conveniently compressed by matching with the synchronous driving frame, so that the stability of the pressure spring is improved; the pressure overtravel adjusting device can also facilitate a user to adjust the value of the pressure overtravel by rotating the adjusting nut, so that the adjustment can be carried out according to the use requirement of the user, and the application range of the pressure overtravel adjusting device is expanded.
The utility model further provides a manual device, the manual device comprises a manual rod and a bolt, the bottom end of the manual rod is provided with a socket, the manual rod is inserted in the radial direction of one end of the iron core of the bistable permanent magnet electromagnet through the socket, and two ends of the bolt penetrate through the iron core in the radial direction relative to the manual rod and the iron core.
In the structure, the bistable permanent magnet electromagnet is fixed through the base, and the bottom end of the manual rod is hinged with the base, so that the displacement of the synchronous driving frame can be controlled through the swinging of the relative hinged point of the manual rod. A user can drive the iron core to drive the synchronous driving frame to axially displace through swinging the manual rod according to requirements, and the switching of the states of the vacuum tubes on two sides is realized, so that the application range of the vacuum tube driving device is expanded, and the vacuum tube driving device can be used in emergency.
The utility model is further arranged that two ends of the iron core of the bistable permanent magnet electromagnet are fixed on the synchronous driving frame through locking nuts.
By adopting the structure, the installation of the utility model can be facilitated, thereby improving the convenience of the assembly of the utility model
The utility model is further provided that the gasket is a U-shaped gasket.
By adopting the structure, the pressure spring can be conveniently limited and mounted, so that the stability of the pressure spring can be improved, and the reliability of the pressure spring is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of the structure at R in fig. 1.
Fig. 3 is a schematic cross-sectional structure of the present invention.
Fig. 4 is a schematic diagram of the application of the present invention in a vacuum tube type dual power transfer switch.
The reference numbers in the figures mean: 1-a bistable permanent magnet; 2-synchronous drive frame; 3-a screw rod; 4-a limiting component; 21-mounting grooves; 41-pressure spring; 42-a gasket; 31-fixing block; 32-an adjusting nut; 5-a manual device; 51-manual lever; 52-bolt.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, back, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 4, the permanent magnet bi-directional bistable operating mechanism includes a bistable permanent magnet 1, a synchronous driving frame 2 and a plurality of lead screws 3 penetrating through the synchronous driving frame 2, the lead screws 3 are in clearance fit with the synchronous driving frame 2, two end portions of an iron core of the bistable permanent magnet 1 respectively penetrate through the synchronous driving frame 2 and are connected with the synchronous driving frame through locking members, a plurality of lead screws 3 are respectively provided with a position-limiting component 4, the synchronous driving frame 2 is provided with an installation groove 21 adapted to the position-limiting component 4, the installation groove 21 is provided with a through hole in an axial direction relative to the lead screw 3, the position-limiting component 4 includes a pressure spring 41 and a spacer 42 which are sleeved on the lead screw 3 and are located in the installation groove 21, the spacer 42 is provided with two groups of spacers which are respectively abutted against two ends of the pressure spring 41, when the bistable permanent magnet 1 drives the synchronous driving frame 2 to move towards one side, the synchronous driving frame 2 drives the gasket 42 to compress the pressure spring 41 towards the side, so as to apply pressure to the screw rod 3, and the movable contact and the static contact of the vacuum tube on the side are tightly closed.
In the structure, the two ends of the screw rod 3 are respectively connected with a vacuum tube, when the coil of the bistable permanent magnet electromagnet 1 is electrified, the iron core can be driven to drive the synchronous driving frame 2 to drive the screw rod 3 to move towards one side, the screw rod 3 drives the moving contact and the static contact of the vacuum tube at the side to be closed, meanwhile, the screw rod 3 can drive the moving contact and the static contact of the vacuum tube at the other side to be disconnected, when the current direction of the coil is changed, the iron core can move towards the other side, so that the vacuum tube at the side is closed, the vacuum tubes at the two sides are driven by the bistable permanent magnet electromagnet 1 to be always in a closed state and interlocked, the utility model can be simply controlled by changing the current direction of direct current used by the coil, the conversion time is extremely short, and uninterrupted load is realized. The pressure spring 41 is arranged to apply pressure overtravel to the closed moving contact and the closed static contact, wherein the pressure overtravel is a stroke required by the pressure spring 41 to apply certain pressure to the close contact of the moving contact and the static contact. The displacement distance of the iron core is equal to the distance between the opening distance of the vacuum tube and the pressure overtravel, so that when the iron core moves towards one side to the opening distance of the vacuum tube, a moving contact and a fixed contact at the side are in a closed state, and then the iron core continuously moves for the distance of the pressure overtravel value, so that the inner wall of the mounting groove 21 of the synchronous driving frame 2 compresses the pressure spring 41, the closing tightness of the moving contact and the fixed contact of the vacuum tube in the displacement direction of the iron core is increased, the closing reliability of the vacuum tube is improved, and the safety of the vacuum tube is improved. Compared with the conventional dual-power automatic switching device, the device has the advantages that the pressure spring 41 is arranged, so that the state change synchronism of the vacuum tubes at the two ends of the screw rod 3 is higher, and the stability and the reliability of the device are improved. The synchronous driving frame 2 can drive the plurality of screw rods 3 to act simultaneously, so that the synchronism among all groups of vacuum tubes is improved, and the reliability of the vacuum tube is improved. The gasket 42 can be arranged to better facilitate the driving pressure spring 41 on the inner wall of the mounting groove 21 to compress, so that the stability of the pressure overtravel implementation of the utility model is improved, and the stability and the reliability of the utility model are further improved. The iron core and the screw rod 3 of the bistable permanent magnet electromagnet 1 are positioned on the same plane, and the displacement of the synchronous driving frame 2 is displaced relative to the iron core and the axial direction of the screw rod 3, so that the iron core and the screw rod 3 are higher in synchronism, the displacement is more stable, and the running stability of the utility model is improved.
The utility model is further provided that two ends of the screw rod 3 are respectively provided with a first thread and a second thread, and the first thread and the second thread are arranged in a reverse direction.
By adopting the structure, the opening distance of the vacuum tubes at the two ends of the screw rod 3 can be adjusted simultaneously by rotating the screw rod, so that the use convenience of the vacuum tube is improved, and the application range of the vacuum tube can be expanded.
The utility model is further arranged that one end of the screw rod 3 is provided with a fixed block 31 which is in clearance fit with the through hole, one end of the fixed block 31 is abutted against a corresponding gasket 42, and the section of the fixed block 31 is hexagonal.
In the above structure, the stability of the gasket 42 at one end corresponding to the fixing block 31 can be improved by the fixing block, and the pressure spring 41 can be compressed by the synchronous driving frame 2, so that the stability of the pressure spring 41 is improved. By arranging the fixing block 31 with a hexagonal cross section, a user can conveniently rotate the screw rod 3 by matching the fixing block 31 with a wrench, so that the convenience of adjusting the opening distance of the vacuum tube is further improved.
The utility model is further provided that one end of the screw rod 3 opposite to the fixed block 31 is provided with an adjusting nut 32 which is in clearance fit with the through hole, and one end of the adjusting nut 32 is abutted against the corresponding gasket 42.
In the structure, the stability of the gasket 42 at the corresponding end can be improved by arranging the adjusting nut 32, and the pressure spring 41 can be conveniently compressed by matching with the synchronous driving frame 2, so that the stability of the pressure spring 41 is improved; the pressure overtravel value can be conveniently adjusted by a user through rotating the adjusting nut 32, so that the pressure overtravel value can be adjusted according to the use requirement of the user, and the application range of the utility model is expanded.
The utility model further provides a manual device 5, the manual device 5 comprises a manual rod 51 and a bolt 52, a socket is arranged at the bottom end of the manual rod 51, the manual rod 51 is inserted in the radial direction of one end of the iron core of the bistable permanent magnet electromagnet 1 through the socket, and two ends of the bolt 52 penetrate through the iron core in the radial direction relative to the manual rod 51 and the iron core.
In the structure, the bistable permanent magnet electromagnet 1 is fixed through the base, and the bottom end of the manual rod 51 is hinged with the base, so that the displacement of the synchronous driving frame 2 can be controlled through the swinging of the relative hinged point of the manual rod 51. A user can drive the iron core to drive the synchronous driving frame 2 to axially displace through swinging the manual lever 51 according to requirements, and the switching of the states of the vacuum tubes on two sides is realized, so that the application range of the vacuum tube driving device is expanded, and the vacuum tube driving device can be used in emergency.
The utility model is further arranged that two ends of the iron core of the bistable permanent magnet electromagnet 1 are fixed on the synchronous driving frame 2 through locking nuts.
By adopting the structure, the installation of the utility model can be facilitated, thereby improving the convenience of the assembly of the utility model
The utility model is further provided that the gasket 42 is a U-shaped gasket 42.
By adopting the structure, the pressure spring 41 can be conveniently limited and mounted, so that the stability of the pressure spring 41 can be improved, and the reliability of the utility model is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and those modifications and variations assumed in the above are also considered to be within the protective scope of the present invention.
Claims (7)
1. The utility model provides a two-way bistable state operating mechanism of permanent magnetism, includes bistable state permanent-magnet electricity magnet, synchronous drive frame and runs through a plurality of lead screw on the synchronous drive frame, lead screw and synchronous drive frame clearance fit, synchronous drive frame and rather than passing through the retaining member and linking to each other its characterized in that are worn out respectively at the both ends of bistable state permanent-magnet electricity magnet's iron core: the synchronous driving frame comprises a plurality of lead screws, limiting assemblies, mounting grooves matched with the limiting assemblies are formed in the synchronous driving frame, through holes are formed in the mounting grooves in the axial direction relative to the lead screws, each limiting assembly comprises a pressure spring and a gasket, the pressure springs and the gaskets are sleeved on the corresponding lead screws and located in the corresponding mounting grooves, the gaskets are provided with two groups of ends which are respectively abutted to the pressure springs, the pressure springs are compressed towards one side by the aid of the driving gaskets of the synchronous driving frame driven by the bistable permanent magnet in a state that the synchronous driving frame moves towards one side, pressure is applied to the lead screws, and moving contacts and static contacts of vacuum tubes on the side are closed tightly.
2. The permanent magnet bi-directional bi-stable operating mechanism of claim 1, wherein: and the two ends of the screw rod are respectively provided with a first thread and a second thread, and the first thread and the second thread are arranged in a reverse direction.
3. The permanent magnet bi-directional bi-stable operating mechanism of claim 2, wherein: one end of the screw rod is provided with a fixed block in clearance fit with the through hole, one end of the fixed block abuts against the corresponding gasket, and the section of the fixed block is hexagonal.
4. The permanent magnet bi-directional bi-stable operating mechanism of claim 3, wherein: and one end of the screw rod, which is opposite to the fixed block, is provided with an adjusting nut in clearance fit with the through hole, and one end of the adjusting nut abuts against the corresponding gasket.
5. The permanent magnet bi-directional bi-stable operating mechanism according to claim 1 or 4, wherein: the manual device comprises a manual rod and a bolt, a socket is formed in the bottom end of the manual rod, the manual rod is inserted into the radial direction of one end of the iron core of the bistable permanent magnet electromagnet through the socket, and two ends of the bolt penetrate through the iron core relative to the manual rod and the radial direction of the iron core.
6. The permanent magnet bi-directional bi-stable operating mechanism of claim 1, wherein: and two ends of the iron core of the bistable permanent magnet electromagnet are fixed on the synchronous driving frame through locking nuts.
7. The permanent magnet bi-directional bi-stable operating mechanism of claim 5, wherein: the gasket adopts U type gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122531492.5U CN216311626U (en) | 2021-10-20 | 2021-10-20 | Permanent-magnet bidirectional bistable operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122531492.5U CN216311626U (en) | 2021-10-20 | 2021-10-20 | Permanent-magnet bidirectional bistable operating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216311626U true CN216311626U (en) | 2022-04-15 |
Family
ID=81114249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122531492.5U Expired - Fee Related CN216311626U (en) | 2021-10-20 | 2021-10-20 | Permanent-magnet bidirectional bistable operating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216311626U (en) |
-
2021
- 2021-10-20 CN CN202122531492.5U patent/CN216311626U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220415 |