CN222462726U - Switching-on and switching-off mechanism for vacuum arc extinguishing chamber - Google Patents
Switching-on and switching-off mechanism for vacuum arc extinguishing chamber Download PDFInfo
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- CN222462726U CN222462726U CN202421179503.5U CN202421179503U CN222462726U CN 222462726 U CN222462726 U CN 222462726U CN 202421179503 U CN202421179503 U CN 202421179503U CN 222462726 U CN222462726 U CN 222462726U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 40
- 238000004146 energy storage Methods 0.000 claims abstract description 20
- 230000005672 electromagnetic field Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000004907 flux 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 relates to a switching-on and switching-off mechanism for a vacuum arc-extinguishing chamber, which comprises a switching-on and switching-off driving shaft, a switching-on and switching-off handle and a permanent magnet mechanism, wherein the switching-on and switching-off driving shaft comprises a main shaft body, an upper limit check ring, an upper energy storage spring, a limit table, a lower energy storage spring and a lower limit check ring which are sequentially sleeved on the main shaft body from top to bottom, a limit slot hole is arranged at the position of the main shaft body, which is provided with the limit table, the switching-on and switching-off handle is provided with a switching-on and switching-off pin shaft, the limit table drives the switching-on and switching-off pin shaft to lift through the switching-on and switching-off pin shaft, the switching-on and switching-off pin shaft penetrates through the limit slot hole, the upper end of the main shaft body is connected with the permanent magnet mechanism, and the lower end of the main shaft body is connected with a moving contact in the vacuum arc-extinguishing chamber. According to the utility model, the permanent magnet mechanism can be utilized to realize automatic switching-on and switching-off control of the vacuum arc-extinguishing chamber, and the switching-on and switching-off handle can be utilized to drive the switching-on and switching-off driving shaft to lift so as to realize manual switching-on and switching-off control of the vacuum arc-extinguishing chamber, thereby improving the use flexibility of products.
Description
Technical Field
The utility model relates to the field of power equipment, in particular to a switching-on and switching-off mechanism for a vacuum arc-extinguishing chamber.
Background
The vacuum interrupter is a commonly used electrical device, and an operating mechanism is usually required to be equipped, for example, a grounding switch for opening and closing induced current by the vacuum interrupter is disclosed in patent with the publication number CN2805158Y, wherein the lower end of the vacuum interrupter is connected with the operating mechanism, the operating mechanism comprises a structure of a shifting fork, a transmission crank arm, an electrodeless adjusting flange, a cam, a closing spring device and the like, and an outdoor pole-mounted switch of an anti-torsion electromagnetic repulsion mechanism is disclosed in patent with the publication number CN216250531U, and the opening and closing mechanism for driving the vacuum interrupter comprises a structure of an action indicating device, a driving disc, a magnetic flux coil, a buffer mechanism and the like.
However, with the development of technology, many power equipment structures have changed greatly, for example, some novel protection switches on outdoor posts have also increased structures such as vacuum arc-extinguishing chambers and isolating knife switches to ensure that electric lines are completely disconnected, and the opening and closing mechanism for controlling the opening and closing of the vacuum arc-extinguishing chambers has a manual operation requirement besides an automatic operation requirement, so that the opening and closing mechanism needs to be redesigned.
Disclosure of utility model
The utility model aims to provide an opening and closing mechanism for a vacuum arc-extinguishing chamber, which can realize automatic opening and closing control of the vacuum arc-extinguishing chamber by utilizing a permanent magnet mechanism and can also realize manual opening and closing control of the vacuum arc-extinguishing chamber by utilizing an opening and closing handle to drive an opening and closing driving shaft to lift, thereby improving the use flexibility of products.
The aim of the utility model is realized by the following technical scheme:
The utility model provides a vacuum interrupter is with divide-shut brake mechanism, includes divide-shut brake drive shaft and divide-shut brake handle, wherein divide-shut brake drive shaft includes the main shaft body and from top to bottom overlaps in proper order and locate last spacing retaining ring on the main shaft body, go up energy storage spring, spacing platform, lower energy storage spring and lower spacing retaining ring, and the position that is equipped with spacing platform on the main shaft body is equipped with spacing slot hole, be equipped with the divide-shut brake round pin axle on the divide-shut brake handle, spacing platform passes through the drive of divide-shut brake round pin axle goes up and down, and the divide-shut brake round pin axle passes spacing slot hole, main shaft body upper end is connected with permanent magnet mechanism, main shaft body lower extreme is connected with the moving contact in the vacuum interrupter.
A handle connecting rod is arranged on one side of the opening and closing handle, a shifting fork is arranged on the handle connecting rod, and the shifting fork is provided with the opening and closing pin shaft.
The permanent magnet mechanism comprises a lifting shaft, an armature is arranged on the lifting shaft, a brake-separating yoke, a brake-separating coil, a permanent magnet, a brake-closing coil and a brake-closing yoke are sequentially arranged on the outer side of the armature from top to bottom, and the lower end of the lifting shaft is fixedly connected with the upper end of the main shaft body.
Two spring retainer rings are sleeved in the middle of the main shaft body, and the two spring retainer rings are respectively arranged on the upper side and the lower side of the limiting table.
The upper limiting check ring is fixedly arranged on the main shaft body through an upper pin shaft, and the lower limiting check ring is fixedly arranged on the main shaft body through a lower pin shaft.
The upper end of the main shaft body is provided with a thread section which is fixedly connected with the lower end of the lifting shaft through threads.
The lower end of the main shaft body is provided with an over-travel adjusting rod and an over-travel spring, wherein the over-travel spring is arranged between the lower limit check ring and the upper end of the over-travel adjusting rod, and the lower end of the over-travel adjusting rod is connected with a moving contact in the vacuum arc extinguishing chamber.
The lower end of the main shaft body is provided with a mounting long hole, the over-travel adjusting rod is mounted on the main shaft body through an adjusting rod pin shaft, and the adjusting rod pin shaft penetrates through the mounting long hole.
The utility model has the advantages and positive effects that:
1. According to the utility model, the permanent magnet mechanism can be utilized to realize automatic switching-on and switching-off control of the vacuum arc-extinguishing chamber, and the switching-on and switching-off handle can be utilized to drive the switching-on and switching-off driving shaft to lift so as to realize manual switching-on and switching-off control of the vacuum arc-extinguishing chamber, thereby improving the use flexibility of products.
2. According to the utility model, the energy storage design of the upper energy storage spring and the lower energy storage spring can ensure that the opening and closing handle can automatically restore to the original position after being released, and in addition, the design of the over-travel adjusting rod and the over-travel spring at the lower end of the main shaft body ensures that the main shaft body always moves up and down in a set range during manual operation, so that the automatic operation control of the permanent magnet mechanism is not influenced.
Drawings
Figure 1 is a schematic overall view of the utility model,
Figure 2 is an enlarged schematic view of the opening and closing drive shaft of figure 1,
Figure 3 is an exploded view of the opening and closing drive shaft of figure 2,
Figure 4 is a schematic view of the internal structure of the permanent magnet mechanism of figure 2,
Fig. 5 is a schematic diagram of an outdoor pole switch structure according to the present utility model.
The switching-on/switching-off driving shaft is 1, the upper limit check ring is 101, the upper pin shaft is 1011, the upper energy storage spring is 102, the spring check ring is 103, the lower energy storage spring is 104, the lower limit check ring is 105, the lower pin shaft is 1051, the over-travel spring is 106, the over-travel adjusting rod is 107, the adjusting rod is 1071, the adjusting rod pin shaft is 108, the main shaft body is 1081, the limit slot hole is 109, the switching-on/switching-off handle is 2, the handle connecting rod is 201, the shifting fork is 202, the switching-on/switching-off pin shaft is 203, the indicating needle is 204, the vacuum arc-extinguishing chamber is 3, the permanent magnet mechanism is 4, the lifting shaft is 401, the armature is 403, the permanent magnet is 404, the switching-off coil is 405, the switching-off yoke is 407, and the vacuum arc-extinguishing chamber is 5.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-5, the utility model comprises a switching-on/off driving shaft 1, a switching-on/off handle 2 and a permanent magnet mechanism 4, wherein as shown in fig. 2-3, the switching-on/off driving shaft 1 comprises a main shaft body 108, an upper limit retainer ring 101, an upper energy storage spring 102, a limit table 109, a lower energy storage spring 104 and a lower limit retainer ring 105 which are sequentially sleeved on the main shaft body 108 from top to bottom, wherein a limit slot hole 1081 is arranged at the position of the limit table 109 on the main shaft body 108, a handle connecting rod 201 is arranged at one side of the switching-on/off handle 2, a shifting fork 202 is arranged on the handle connecting rod 201, a switching-on/off pin 203 is arranged on the shifting fork 202, the limit table 109 is driven to lift by the switching-off pin 203, and the switching-on/off pin 203 passes through the limit slot hole 1081 as shown in fig. 4, the permanent magnet mechanism 4 comprises a lifting shaft 401, an armature 402 is fixedly arranged on the lifting shaft 401, a brake separating yoke 406, a brake separating coil 405, a permanent magnet 403, a brake closing coil 404 and a brake closing yoke 407 are sequentially arranged on the outer side of the armature 402 from top to bottom, the lower end of the lifting shaft 401 is fixedly connected with the upper end of the main shaft body 108, as shown in fig. 1, the lower end of the main shaft body 108 is connected with the vacuum arc-extinguishing chamber 3, a moving contact and a fixed contact are arranged in the vacuum arc-extinguishing chamber 3, when the moving contact descends to be in contact with the fixed contact, electric connection is realized, and when the moving contact ascends to be separated from the fixed contact, electric disconnection is realized, which is a known technology in the art, for example, the vacuum arc-extinguishing chamber structure in the CN219553512U patent can be seen, and the lower end of the main shaft body 108 is connected with the moving contact in the vacuum arc-extinguishing chamber 3.
As shown in fig. 2 to 3, in this embodiment, two spring retainers 103 are sleeved in the middle of the main shaft body 108, and the two spring retainers 103 are respectively disposed on the upper and lower sides of the limiting platform 109, the upper end of the upper energy storage spring 102 abuts against the upper limiting retainer 101, the lower end abuts against the spring retainer 103 on the corresponding side, and the upper end of the lower energy storage spring 104 abuts against the spring retainer 103 on the corresponding side, and the lower end abuts against the lower limiting retainer 105.
In this embodiment, as shown in fig. 2 to 3, the upper limit retainer 101 is fixed on the main shaft body 108 through an upper pin 1011, and the lower limit retainer 105 is fixed on the main shaft body 108 through a lower pin 1051.
In this embodiment, as shown in fig. 2 to 3, a threaded section is provided at the upper end of the main shaft 108 and is screwed to the lower end of the lifting shaft 401.
In this embodiment, as shown in fig. 2 to 3, an over-travel adjusting rod 107 and an over-travel spring 106 are disposed at the lower end of the main shaft body 108, wherein the over-travel spring 106 is disposed between the lower limit retainer ring 105 and the upper end of the over-travel adjusting rod 107, and a threaded section is disposed at the lower end of the over-travel adjusting rod 107 and is fixedly connected with the rod at the upper end of the movable contact in the vacuum arc extinguishing chamber 3.
As shown in fig. 2 to 3, in this embodiment, a mounting slot is provided at the lower end of the main shaft body 108, the over-travel adjusting rod 107 is mounted on the main shaft body 108 through an adjusting rod pin 1071, and the adjusting rod pin 1071 passes through the mounting slot.
The working principle of the utility model is as follows:
When the vacuum interrupter 3 is switched on, the electromagnetic field generated by the current is opposite to the electromagnetic field generated by the switching-on coil 404, the armature 402 is driven to drive the lifting shaft 401 to move downwards at the moment, the switching-on coil 404 is only electrified for a set short time, the lifting shaft 401 can be guaranteed to descend to a proper position, then the switching-off is carried out, the armature 402 keeps a position through the magnetic force of the permanent magnet 403 after the switching-off, the moving contact on the upper side of the vacuum interrupter 3 is driven to move downwards through the main shaft body 108 and is in contact with the fixed contact on the lower side of the vacuum interrupter 3 to realize electric communication, the switching-off coil 405 is electrified to generate magnetic force when the vacuum interrupter 3 is switched off, the electromagnetic field generated by the current is opposite to the switching-off yoke 406, the armature 402 is driven to move upwards at the moment, the switching-off coil 405 is electrified for a set short time, then the lifting shaft 401 is powered off to a position, the armature 402 keeps the position through the magnetic force of the permanent magnet 403 after the lifting shaft 401 moves downwards, and the moving upwards through the moving contact on the main shaft 108 to be electrically disconnected from the moving contact on the upper side of the main shaft body 108. The permanent magnet mechanism 4 is well known in the art, and for example, a bistable permanent magnet mechanism in CN 117650026B can be used.
In fig. 2 to 3, the manual operation can be further realized by adding the structures such as the opening and closing handle 2 and the opening and closing driving shaft 1, wherein when the lifting shaft 401 in the permanent magnet mechanism 4 is at the opening and closing position and the coil thereof cannot realize automatic operation or other conditions requiring manual operation due to power failure and the like, an operator pulls down the opening and closing handle 2 by using the insulating rod, the opening and closing handle 2 drives the opening and closing pin 203 to move down through the handle connecting rod 201 and the shifting fork 202, the opening and closing pin 203 moves down to drive the limit table 109 to move down to compress the energy storage spring 104 for energy storage, and when the opening and closing pin 203 abuts against the lowest end of the limit slot 1081, the energy storage spring 104 is finished, then the opening and closing handle 2 is continuously pulled down, the driving spindle 108 moves down to realize the closing of the vacuum arc extinguishing chamber 3, the lower end of the spindle 108 drives the moving contact in the vacuum arc extinguishing chamber 3 to move down and contact with the fixed contact, and the lifting shaft 401 and the armature 402 in the permanent magnet mechanism 4 move down to the closing position, so that when the handle 2 is released, the lifting and closing position of the permanent magnet mechanism 4 is still restored to the original position by the lifting and closing position of the permanent magnet mechanism 2, and the magnetic force is kept under the action of the lifting and driving shaft 401 to move down to the limit position to move down to the position of the limit pin 203. In contrast to the above, in the manual opening process, when the lifting shaft 401 in the permanent magnet mechanism 4 is at the closing position and the coil cannot realize automatic operation due to power failure and other reasons, an operator pushes up the opening and closing handle 2 by using the insulating rod, so that the opening and closing pin shaft 203 moves up to drive the limiting table 109 to compress the upper energy storage spring 102, when the opening and closing pin shaft 203 abuts against the uppermost end of the limiting long hole 1081, the main shaft body 108 is driven to move up by continuing to push up the opening and closing handle 2, at the moment, the main shaft body 108 drives the movable contact in the lower end vacuum arc-extinguishing chamber 3 to move up and separate from the fixed contact to realize opening, and meanwhile, the main shaft body 108 drives the lifting shaft 401 at the upper end to drive the armature 402 to move up to the opening position, after the opening and closing handle 2 is released, the lifting shaft 401 and the main shaft 108 at the lower side can be kept at the opening position by the magnetic force of the permanent magnet 403, and the opening and closing handle 2 is driven to restore to the original position by the upper energy storage spring 102.
In addition, as shown in fig. 2 to 3, the lower end of the main shaft body 108 is provided with a floatable over-travel adjusting rod 107 and an over-travel spring 106, the over-travel adjusting rod 107 and the over-travel spring 106 are used for ensuring the lifting range of the main shaft body 108, so that the movable contact at the lower end and the fixed contact can be ensured to be contacted or separated, the lifting shaft 401 at the upper end and the armature 402 can be ensured to be moved to a brake-separating or brake-closing position in the permanent magnet mechanism 4, further the subsequent automatic control of the permanent magnet mechanism 3 is not influenced, wherein an adjusting rod pin 1071 at the upper end of the over-travel adjusting rod 107 can realize the floating within a certain range along an installation slot hole at the lower end of the main shaft body 108, and meanwhile, the lower limiting retainer ring 105 is matched with the compression over-travel spring 106 to ensure that the main shaft body 108 can be reset to a set position.
As shown in fig. 5, an application example of the present utility model is a novel outdoor pole switch, in which a vacuum arc-extinguishing chamber 3 is disposed in a vacuum arc-extinguishing chamber cavity 5 on the switch, and an opening and closing driving shaft 1, a permanent magnetic mechanism 4, and the like are centrally disposed in an opening and closing mechanism cavity on the upper end of the switch, an opening and closing handle 2 is disposed on the outer side of the upper end of the switch, and the other end of the handle connecting rod 201 passes through the upper end of the switch and then is connected with an indicating needle 204 to match with the state of an opening and closing mark indicating device on the switch.
Claims (1)
1. The opening and closing mechanism for the vacuum arc-extinguishing chamber is characterized by comprising an opening and closing driving shaft (1) and an opening and closing handle (2), wherein the opening and closing driving shaft (1) comprises a main shaft body (108) and an upper limit retainer ring (101), an upper energy storage spring (102), a limit table (109), a lower energy storage spring (104) and a lower limit retainer ring (105) which are sequentially sleeved on the main shaft body (108) from top to bottom, a limit slot hole (1081) is formed in the position, provided with the limit table (109), of the main shaft body (108), an opening and closing pin shaft (203) is arranged on the opening and closing handle (2), the limit table (109) drives the opening and closing pin shaft (203) to lift through the opening and closing pin shaft (203) penetrates through the limit slot hole (1081), the upper end of the main shaft body (108) is connected with a permanent magnet mechanism (4), and the lower end of the main shaft body (108) is connected with a moving contact in the vacuum arc-extinguishing chamber (3);
A handle connecting rod (201) is arranged on one side of the opening and closing handle (2), a shifting fork (202) is arranged on the handle connecting rod (201), and the opening and closing pin shaft (203) is arranged on the shifting fork (202);
The permanent magnet mechanism (4) comprises a lifting shaft (401), an armature (402) is arranged on the lifting shaft (401), a brake separating yoke (406), a brake separating coil (405), a permanent magnet (403), a brake closing coil (404) and a brake closing yoke (407) are sequentially arranged on the outer side of the armature (402) from top to bottom, and the lower end of the lifting shaft (401) is fixedly connected with the upper end of the main shaft body (108);
Two spring retainer rings (103) are sleeved in the middle of the main shaft body (108), and the two spring retainer rings (103) are respectively arranged on the upper side and the lower side of the limiting table (109);
The upper limit check ring (101) is fixedly arranged on the main shaft body (108) through an upper pin shaft (1011), and the lower limit check ring (105) is fixedly arranged on the main shaft body (108) through a lower pin shaft (1051);
The upper end of the main shaft body (108) is provided with a thread section which is fixedly connected with the lower end of the lifting shaft (401) through threads;
The lower end of the main shaft body (108) is provided with an over-travel adjusting rod (107) and an over-travel spring (106), wherein the over-travel spring (106) is arranged between the lower limit retainer ring (105) and the upper end of the over-travel adjusting rod (107), and the lower end of the over-travel adjusting rod (107) is connected with a moving contact in the vacuum arc-extinguishing chamber (3);
The lower end of the main shaft body (108) is provided with a mounting long hole, the over-travel adjusting rod (107) is mounted on the main shaft body (108) through an adjusting rod pin shaft (1071), and the adjusting rod pin shaft (1071) penetrates through the mounting long hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421179503.5U CN222462726U (en) | 2024-05-28 | 2024-05-28 | Switching-on and switching-off mechanism for vacuum arc extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421179503.5U CN222462726U (en) | 2024-05-28 | 2024-05-28 | Switching-on and switching-off mechanism for vacuum arc extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222462726U true CN222462726U (en) | 2025-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421179503.5U Active CN222462726U (en) | 2024-05-28 | 2024-05-28 | Switching-on and switching-off mechanism for vacuum arc extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222462726U (en) |
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2024
- 2024-05-28 CN CN202421179503.5U patent/CN222462726U/en active Active
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