CN216749720U - Mining explosion-proof permanent magnet high-voltage vacuum circuit breaker - Google Patents
Mining explosion-proof permanent magnet high-voltage vacuum circuit breaker Download PDFInfo
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- CN216749720U CN216749720U CN202123141492.0U CN202123141492U CN216749720U CN 216749720 U CN216749720 U CN 216749720U CN 202123141492 U CN202123141492 U CN 202123141492U CN 216749720 U CN216749720 U CN 216749720U
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Abstract
A mining flame proof permanent magnetism high pressure vacuum circuit breaker which characterized in that: the front side of the main frame is provided with a mounting cavity which is sequentially divided into a first chamber, a second chamber, a third chamber and a fourth chamber from right to left by a plurality of partition plates; an energy storage operating mechanism, a manual closing operating mechanism and a manual opening operating mechanism are installed in the first cavity, the energy storage operating mechanism comprises an energy storage shaft, the energy storage shaft is rotatably installed in the first cavity, one end of the energy storage shaft penetrates through the partition plate to extend into the second cavity and is provided with an energy storage connecting lever, and the energy storage shaft is further provided with a shifting block capable of shifting the main shaft to rotate so as to realize closing and a lock catch capable of locking with the manual closing operating mechanism and keeping an energy storage state; an energy storage elastic piece is arranged in the second cavity and connected with the energy storage crank arm; a permanent magnet operating mechanism which is in linkage connection with the main shaft is arranged in the third chamber, and the permanent magnet operating mechanism is in linkage connection with the manual brake separating mechanism; an intelligent control mechanism is installed in the fourth chamber.
Description
Technical Field
The utility model relates to a high-voltage apparatus technical field, concretely relates to mining flame proof permanent magnetism high voltage vacuum circuit breaker.
Background
Along with the increasing of coal mining intensity, the mining depth is increasing day by day, and the mining condition is more complicated, puts forward higher requirement to coal mine safety production work. Many coal mines have serious safety accidents caused by electric sparks generated by the operation of electrical equipment.
Therefore, the coal mine explosion-proof vacuum circuit breaker is used as main equipment in a coal mine power system, and the performance of the coal mine explosion-proof vacuum circuit breaker is directly related to whether a coal mine power grid can safely operate or not.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of background art, the utility model provides a mining flame proof permanent magnetism high pressure vacuum circuit breaker.
The utility model discloses the technical scheme who adopts: a mining flame-proof permanent magnet high-voltage vacuum circuit breaker comprises a main frame, wherein a plurality of solid-sealed polar columns are arranged on the rear side of the main frame, a main shaft is arranged on the main frame in a position corresponding to the lower parts of the solid-sealed polar columns, and the solid-sealed polar columns are in linkage connection with the main shaft; the front side of the main frame is provided with a mounting cavity, and the mounting cavity is sequentially divided into a first chamber, a second chamber, a third chamber and a fourth chamber from right to left through a plurality of partition plates; an energy storage operating mechanism, a manual closing operating mechanism and a manual opening operating mechanism are installed in the first cavity, the energy storage operating mechanism comprises an energy storage shaft, the energy storage shaft is rotatably installed in the first cavity, one end of the energy storage shaft penetrates through the partition plate to extend into the second cavity and is provided with an energy storage crank arm, and a shifting block capable of shifting the main shaft to rotate to achieve closing and a lock catch capable of locking with the manual closing operating mechanism and keeping an energy storage state are further arranged on the energy storage shaft; an energy storage elastic piece is arranged in the second cavity and connected with the energy storage crank arm; a permanent magnet operating mechanism in linkage connection with the main shaft is installed in the third chamber, and the permanent magnet operating mechanism is in linkage connection with the manual brake-separating operating mechanism; and an intelligent control mechanism is arranged in the fourth cavity.
A driving arm is arranged on the main shaft, and a plurality of rolling shafts are arranged on the driving arm along the front-back direction; the shifting block corresponds to the roller, and one surface of the shifting block matched with the roller is arc-shaped.
The energy storage operating mechanism further comprises an energy storage operating shaft, the energy storage operating shaft is rotatably arranged in the first cavity, one end of the energy storage operating shaft extends out of the right side wall of the installation cavity and is connected with an energy storage operating handle, and the energy storage operating shaft is in transmission connection with the energy storage shaft through a chain transmission assembly.
The energy storage operation shaft is provided with a ratchet wheel, the side wall of the right side of the installation cavity is correspondingly provided with a pawl, and the ratchet wheel is matched with the pawl.
The manual closing operation mechanism comprises a closing operation shaft and a tripping buckle; the jump buckle is movably arranged on the partition board in the first cavity and can be locked and matched with the lock catch, and the jump buckle is also connected with an unlocking elastic piece which can drive the jump buckle to be separated from the lock catch for unlocking; the closing operation shaft is rotatably arranged in the first cavity, one end of the closing operation shaft extends out of the right side wall of the installation cavity and is connected with a closing operation handle, and a positioning cam corresponding to the tripping buckle is arranged on the closing operation shaft.
And the energy storage shaft is correspondingly provided with a toggle cam which can be matched with the linkage cam to toggle the rotary motion of the closing operation shaft.
The manual brake-separating operating mechanism comprises a brake-separating operating shaft and a brake-separating rotating shaft, the brake-separating operating shaft is rotatably arranged in the first cavity, one end of the brake-separating operating shaft extends out of the right side wall of the mounting cavity and is connected with a brake-separating operating handle, and one end of the brake-separating rotating shaft is arranged in the first cavity and is in linkage connection with the brake-separating operating shaft through a multi-connecting-rod structure; and the other end of the opening rotating shaft extends into the third chamber and is in linkage connection with the permanent magnet operating mechanism.
A groove is formed at one end of the opening rotating shaft extending into the third chamber; the upper end of the permanent magnet operating mechanism is connected with a linkage rod, one end of the linkage rod is hinged to a static iron core of the permanent magnet operating mechanism, the other end of the linkage rod is arranged in the groove, and the middle of the linkage rod is in linkage fit with a movable iron core of the permanent magnet operating mechanism.
And the second chamber and the fourth chamber are internally provided with opening tension springs connected with the main shaft.
The beneficial effects of the utility model are that: by adopting the scheme, the automatic opening and closing device is reasonable in overall structure layout, rapid and reliable in action, capable of achieving independent control of manual and electric opening and closing and opening and convenient to operate.
Drawings
FIG. 1 is the utility model discloses mining flame proof permanent magnetism high pressure vacuum circuit breaker's schematic structure.
FIG. 2 is the utility model discloses the structure schematic diagram behind the main frame the place ahead curb plate is hidden to mining flame proof permanent magnetism high pressure vacuum circuit breaker.
FIG. 3 is the utility model discloses the structure schematic diagram behind main frame right side curb plate and the partial part is hidden to mining flame proof permanent magnetism high pressure vacuum circuit breaker.
Fig. 4 is the embodiment of the present invention provides a schematic structural diagram of an energy storage operating mechanism and a manual closing operating mechanism.
Fig. 5 is a schematic structural diagram of another view angle of the energy storage operating mechanism and the manual closing operating mechanism according to the embodiment of the present invention.
Fig. 6 is a schematic view of a connection structure between the manual opening operation mechanism and the permanent magnet operation mechanism according to the embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, the mining explosion-proof permanent magnet high-voltage vacuum circuit breaker comprises a main frame 1, a solid-sealed pole 2, a main shaft 3, an energy storage operating mechanism 4, a manual closing operating mechanism 5, a manual opening operating mechanism 6, an energy storage elastic part 7, a permanent magnet operating mechanism 8 and an intelligent control mechanism 9.
The front side of the main frame 1 is formed with an installation cavity, the installation cavity is separated by 3 partition plates and sequentially separated from right to left into four cavities including a first cavity 11, a second cavity 12, a third cavity 13 and a fourth cavity 14. The energy storage operating mechanism 4, the manual closing operating mechanism 5 and the manual opening operating mechanism 6 are arranged in a first cavity 11, the energy storage elastic part 7 is arranged in a second cavity 12, the permanent magnet operating mechanism 8 is arranged in a third cavity 13, and the intelligent control mechanism 9 is arranged in a fourth cavity 14.
The number of the solid-sealed polar columns 2 is 3, the solid-sealed polar columns are installed on the rear side of the main frame 1, a contact system and a contact driving shaft for driving a moving contact to act are arranged in each solid-sealed polar column 2, and the contact driving shaft extends out of the bottom of the solid-sealed polar column 2. The solid-sealed polar pole is adopted, and is safer and more reliable in a mining environment compared with an open polar pole.
The main shaft 3 is rotatably installed at the lower position of the main frame 1 corresponding to the solid-sealed polar pole 2, the contact driving shaft of the 3 solid-sealed polar poles 2 is in linkage connection with the main shaft 3, the rotating action of the main shaft 3 can drive the contact driving shaft of the 3 solid-sealed polar poles 2 to ascend or descend, so that the closing and opening actions in the solid-sealed polar poles 2 are realized, and the solid-sealed polar poles 2 are in a vacuum state in order to eliminate the arc discharge phenomenon during opening and closing.
The permanent magnet operating mechanism 8 adopts a bistable permanent magnet operating mechanism, the permanent magnet operating mechanism 8 is an existing common mechanism and generally comprises a static iron core, a movable iron core, a permanent magnet, a coil, an operating rod and the like, the operating rod is in linkage connection with the main shaft 3 through a connecting crank arm 33, and the main shaft 3 can be driven to rotate through the permanent magnet operating mechanism 8.
The intelligent control mechanism 9 adopts a single chip microcomputer and an IGBT power module, the action is rapid and reliable, the intelligent control is convenient to realize, a wiring module can be arranged on the outer side of the side wall on the left side of the installation cavity, the wiring operation is convenient, the layout is reasonable, and the operation is convenient.
Energy storage operating device 4 installs in first cavity 11, including energy storage axle 41, energy storage operating axis 45, energy storage axle 41 is the integral key shaft to rotatably install in first cavity 11, 41 one end of energy storage axle passes the baffle and extends to in second cavity 12 to install energy storage turning arm 42, in addition, 41 mid-mounting of energy storage axle has shifting block 43, and energy storage axle 41 installs hasp 44 near the position of baffle, and energy storage axle 41 installs toggle cam 49 near the position of installation cavity right side lateral wall.
The energy storage elastic part 7 is usually a tension spring, the energy storage elastic part 7 is connected with the energy storage crank arm 42, and the energy storage elastic part 7 can be stretched by rotating the spline shaft, so that the purpose of elastic energy storage is achieved.
A driving arm 31 extending forwards is arranged at a position of the main shaft 3 corresponding to the first chamber 11, and a plurality of rollers 32 are arranged on the driving arm 31 along the front-back direction; the shifting block 43 corresponds to the roller 32, the surface of the shifting block 43 matched with the roller 32 is arc-shaped, when the solid-sealed polar pole 2 is located at a switch-off position, elastic energy storage is released, the energy storage shaft 41 rotates to enable the shifting block 43 to be matched with the roller 32, and therefore the main shaft 3 is shifted to rotate, and the switch-on action of the solid-sealed polar pole 2 is achieved. Through the cambered surface structure of the shifting block 43 and the rolling characteristic of the rolling shaft 32, the friction force generated when the shifting block 43 is matched with the rolling shaft 32 can be reduced, mutual damage caused by strong impact is avoided, and the service life is prolonged.
The energy storage operating shaft 45 is also rotatably installed in the first cavity 11 and located above the energy storage shaft 41, one end of the energy storage operating shaft 45 extends out of the right side wall of the installation cavity and is connected with an energy storage operating handle 46, the energy storage operating shaft 45 is in transmission connection with the energy storage shaft 41 through a chain transmission assembly, the energy storage operating shaft 45 can be easily rotated through the energy storage operating handle 46, and the energy storage operating shaft 45 is rotated to drive the energy storage shaft 41 to rotate through the chain transmission assembly, so that elastic energy storage action is realized.
The energy storage operating shaft 45 is provided with a ratchet wheel 47, the right side wall of the mounting cavity is correspondingly provided with a pawl 48, the ratchet wheel 47 is matched with the pawl 48, so that the energy storage operating shaft 45 can rotate in one direction only, and the energy storage operating shaft 45 can rotate reversely in the energy storage process.
The manual closing operation mechanism 5 is installed in the first chamber 11, and includes a closing operation shaft 51 and a trip 52.
Jump knot 52 articulates on the baffle in first cavity 11 to be located the top of hasp 44, press down jump knot 52 can realize cooperating with locking each other of hasp 44, jump knot 52 still is connected with unblock elastic component 56, and unblock elastic component 56 can adopt torsional spring, extension spring etc. in this embodiment, unblock elastic component 56 is the extension spring, unblock elastic component 56 can order about jump knot 52 upwards to move and hasp 44 separation unblock.
The closing operation shaft 51 is rotatably installed in the first chamber 11, one end of the closing operation shaft extends out of the right side wall of the installation cavity and is connected with a closing operation handle 53, a positioning cam 54 is installed at a position of the closing operation shaft 51 close to the partition plate, and a linkage cam 55 is installed at a position of the closing operation shaft 51 close to the right side wall of the installation cavity. Wherein, the positioning cam 54 is positioned above the jump buckle 52, and can push the jump buckle 52 to press downwards to position and keep the jump buckle 52 at the position of locking and matching the lock catch 44, and the linkage cam 55 is correspondingly matched with the toggle cam 49. In the energy storage action process, the energy storage shaft 41 can toggle the linkage cam 55 through the toggle cam 49, thereby driving the closing operation shaft 51 to rotate, the closing operation shaft 51 then drives the positioning cam 54 to move to press the trip buckle 52 downwards, when the energy storage action is completed, the trip buckle 52 is mutually locked and matched with the lock catch 44, the energy storage state is kept, during the manual closing operation, the closing operation shaft 51 is driven to rotate through the closing operation handle 53, so that the positioning cam 54 is far away from the trip buckle 52, the trip buckle 52 moves upwards under the driving of the unlocking elastic piece 56 to separate and unlock with the lock catch 44, the energy storage is released, the energy storage shaft 41 rotates rapidly, the shifting block 43 thereof toggles the main shaft 3 to rotate, and the closing is realized.
The manual opening operation mechanism 6 comprises an opening operation shaft 61 and an opening rotating shaft 62, wherein the opening operation shaft 61 is rotatably arranged in the first chamber 11, one end of the opening operation shaft extends out of the right side wall of the installation cavity, and is connected with an opening operation handle 63.
One end of the opening rotating shaft 62 is arranged in the first chamber 11 and is in linkage connection with the opening operating shaft 61 through a multi-link structure; the other end of the opening rotating shaft 62 extends into the third chamber 13 and is formed with a groove 621, the upper end of the permanent magnet operating mechanism 8 is connected with a linkage rod 81, one end of the linkage rod 81 is hinged to a static iron core of the permanent magnet operating mechanism 8, the other end of the linkage rod is arranged in the groove 621, and the middle of the linkage rod 81 is in linkage fit with a movable iron core of the permanent magnet operating mechanism 8.
When the manual brake is operated, the brake-separating operation handle 63 drives the brake-separating operation shaft 61 to rotate, the brake-separating operation shaft 61 drives the brake-separating rotating shaft 62 to rotate through the multi-connecting-rod structure, and the brake-separating rotating shaft 62 drives the linkage rod 81 to act, so that the moving iron core of the permanent magnet operation mechanism 8 is stirred to act, and the brake is separated.
In addition, the second chamber 12 and the fourth chamber 14 are both provided with a brake separating tension spring 34 connected with the spindle 3, so that the brake separating action is more rapid and stable.
The manual operation process of the mining explosion-proof permanent magnet high-voltage vacuum circuit breaker is as follows:
first, energy storage process
The energy storage operating handle 46 is manually operated to drive the energy storage operating shaft 45 to rotate clockwise, the energy storage operating shaft 45 drives the energy storage shaft 41 to rotate clockwise through chain transmission, the energy storage shaft 41 stretches the energy storage elastic part 7 through the energy storage connecting lever 42 to store energy, meanwhile, the energy storage shaft 41 is matched with a linkage cam 55 on the closing operating shaft 51 through a toggle cam 49 to drive the closing operating shaft 51 to rotate anticlockwise, the closing operating shaft 51 drives a positioning cam 54 on the closing operating shaft to act simultaneously to press a jump buckle 52 downwards to a position capable of being locked and matched with a lock buckle 44, after the energy storage connecting lever 42 bypasses a connecting dead point with the energy storage elastic part 7, the energy storage elastic part 7 can provide an elastic force capable of driving the energy storage connecting lever 42 to rotate clockwise, namely the energy storage shaft 41 provides an elastic force capable of driving the energy storage shaft 41 to rotate clockwise, but due to the locking and matching between the jump buckle 52 and the lock buckle 44, the rotation of the charging shaft 41 is prevented, and at this time, the charging is maintained in the charging preparation state.
Second, manual closing process
During manual closing, the closing operation handle 53 is manually operated to drive the closing operation shaft 51 to rotate anticlockwise, the closing operation shaft 51 simultaneously drives the positioning cam 54 on the closing operation shaft to move, so that the closing operation shaft is separated from the trip buckle 52, the trip buckle 52 is separated from the lock catch 44 under the driving of the unlocking elastic piece 56, so that the energy storage shaft 41 can continue to rotate clockwise, the elastic force of the energy storage elastic piece 7 is released instantly, the energy storage shaft 41 is driven to rotate rapidly, the shifting block 43 on the energy storage shaft 41 shifts the main shaft 3 to rotate, and closing of the solid-sealed polar pole 2 is realized.
Third, manual brake-separating process
During manual brake opening, the brake opening operation handle 63 is manually operated to drive the brake opening operation shaft 61 to rotate, the brake opening operation shaft 61 drives the brake opening rotating shaft 62 to rotate through the multi-connecting-rod structure, the brake opening rotating shaft 62 drives the linkage rod 81 to act, so that the moving iron core of the permanent magnet operation mechanism 8 is stirred to act, the action of the permanent magnet operation mechanism 8 is controlled, the permanent magnet operation mechanism 8 drives the main shaft 3 to act, and the brake opening of the solid-sealed polar pole 2 is realized.
By adopting the mining explosion-proof permanent magnet high-voltage vacuum circuit breaker, the whole structure is reasonable in layout, the action is rapid and reliable, manual and electric switching on and off independent control can be realized, and the operation is convenient.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (9)
1. A mining flame-proof permanent magnet high-voltage vacuum circuit breaker comprises a main frame (1), wherein a plurality of solid-sealed polar columns (2) are arranged on the rear side of the main frame (1), a main shaft (3) is arranged on the main frame (1) corresponding to the lower positions of the solid-sealed polar columns (2), and the solid-sealed polar columns (2) are in linkage connection with the main shaft (3);
the method is characterized in that: an installation cavity is formed in the front side of the main frame (1), and the installation cavity is sequentially divided into a first cavity (11), a second cavity (12), a third cavity (13) and a fourth cavity (14) from right to left through a plurality of partition plates;
an energy storage operating mechanism (4), a manual closing operating mechanism (5) and a manual opening operating mechanism (6) are installed in the first cavity (11), the energy storage operating mechanism (4) comprises an energy storage shaft (41), the energy storage shaft (41) is rotatably installed in the first cavity (11), one end of the energy storage shaft penetrates through the partition plate to extend into the second cavity (12), and an energy storage crank arm (42) is installed, and a shifting block (43) capable of shifting the main shaft (3) to rotate to realize closing and a lock catch (44) capable of locking with the manual closing operating mechanism (5) and keeping an energy storage state are further arranged on the energy storage shaft (41);
an energy storage elastic piece (7) is arranged in the second cavity (12), and the energy storage elastic piece (7) is connected with an energy storage crank arm (22);
a permanent magnet operating mechanism (8) in linkage connection with the main shaft (3) is installed in the third chamber (13), and the permanent magnet operating mechanism (8) is in linkage connection with the manual brake-separating operating mechanism (6);
an intelligent control mechanism (9) is arranged in the fourth chamber (14).
2. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 1, characterized in that: a driving arm (31) is installed on the main shaft (3), and a plurality of rolling shafts (32) are arranged on the driving arm (31) along the front-back direction; the shifting block (43) corresponds to the rolling shaft (32), and one surface of the shifting block (43) matched with the rolling shaft (32) is arc-shaped.
3. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 1, characterized in that: the energy storage operating mechanism (4) further comprises an energy storage operating shaft (45), the energy storage operating shaft (45) is rotatably installed in the first cavity (11), one end of the energy storage operating shaft extends out of the right side wall of the installation cavity and is connected with an energy storage operating handle (46), and the energy storage operating shaft (45) is in transmission connection with the energy storage shaft (41) through a chain transmission assembly.
4. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 3, characterized in that: the energy storage operating shaft (45) is provided with a ratchet wheel (47), the right side wall of the mounting cavity is correspondingly provided with a pawl (48), and the ratchet wheel (47) is matched with the pawl (48).
5. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 1, characterized in that: the manual closing operation mechanism (5) comprises a closing operation shaft (51) and a tripping device (52);
the jump buckle (52) is movably arranged on a partition plate in the first chamber (11) and can be locked and matched with the lock catch (44), and the jump buckle (52) is also connected with an unlocking elastic piece (56) which can drive the jump buckle to be separated from the lock catch (44) for unlocking;
the closing operation shaft (51) is rotatably arranged in the first cavity (11), one end of the closing operation shaft extends out of the right side wall of the installation cavity and is connected with a closing operation handle (53), and a positioning cam (54) corresponding to the tripping button (52) is arranged on the closing operation shaft (51).
6. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 5, characterized in that: and a linkage cam (55) is arranged on the closing operation shaft (51), and a toggle cam (49) which can be matched with the linkage cam (55) to toggle the closing operation shaft (51) to rotate is correspondingly arranged on the energy storage shaft (41).
7. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 1, characterized in that: the manual opening operation mechanism (6) comprises an opening operation shaft (61) and an opening rotating shaft (62), the opening operation shaft (61) is rotatably arranged in the first chamber (11), one end of the opening operation shaft extends out of the right side wall of the installation cavity and is connected with an opening operation handle (63),
one end of the opening rotating shaft (62) is arranged in the first cavity (11) and is in linkage connection with the opening operating shaft (61) through a multi-connecting-rod structure; the other end of the opening rotating shaft (62) extends into the third chamber (13) and is in linkage connection with the permanent magnet operating mechanism (8).
8. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 7, characterized in that: a groove (621) is formed at one end of the opening rotating shaft (62) extending into the third chamber (13);
the permanent magnetism operating device (8) upper end is connected with gangbar (81), just gangbar (81) one end is articulated with the quiet iron core of permanent magnetism operating device (8), the other end setting of gangbar (81) is in recess (621), just the middle part of gangbar (81) and the iron core linkage cooperation that moves of permanent magnetism operating device (8).
9. The mining flameproof permanent magnet high-voltage vacuum circuit breaker according to claim 1, characterized in that: and a brake separating tension spring (33) connected with the main shaft (3) is arranged in the second chamber (12) and the fourth chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123141492.0U CN216749720U (en) | 2021-12-15 | 2021-12-15 | Mining explosion-proof permanent magnet high-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123141492.0U CN216749720U (en) | 2021-12-15 | 2021-12-15 | Mining explosion-proof permanent magnet high-voltage vacuum circuit breaker |
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| CN216749720U true CN216749720U (en) | 2022-06-14 |
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| CN202123141492.0U Active CN216749720U (en) | 2021-12-15 | 2021-12-15 | Mining explosion-proof permanent magnet high-voltage vacuum circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116110741A (en) * | 2023-02-07 | 2023-05-12 | 泰安众诚自动化设备股份有限公司 | Mining high-voltage vacuum switch composite breaker |
-
2021
- 2021-12-15 CN CN202123141492.0U patent/CN216749720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116110741A (en) * | 2023-02-07 | 2023-05-12 | 泰安众诚自动化设备股份有限公司 | Mining high-voltage vacuum switch composite breaker |
| CN116110741B (en) * | 2023-02-07 | 2023-10-20 | 泰安众诚自动化设备股份有限公司 | Mining high-voltage vacuum switch composite breaker |
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