CN211555769U - Indicating device for vacuum circuit breaker - Google Patents
Indicating device for vacuum circuit breaker Download PDFInfo
- Publication number
- CN211555769U CN211555769U CN201922482255.7U CN201922482255U CN211555769U CN 211555769 U CN211555769 U CN 211555769U CN 201922482255 U CN201922482255 U CN 201922482255U CN 211555769 U CN211555769 U CN 211555769U
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- ring
- heating
- circuit breaker
- vacuum circuit
- rotating shaft
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- 238000010438 heat treatment Methods 0.000 claims abstract description 74
- 238000003780 insertion Methods 0.000 claims description 27
- 230000037431 insertion Effects 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003699 hair surface Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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Abstract
The utility model provides an indicating device for a vacuum circuit breaker, which belongs to the technical field of vacuum circuit breakers and comprises a pointer and a rotating shaft, wherein one end of the rotating shaft is fixedly connected with the pointer, and the other end of the rotating shaft is used for being rotatably connected with a box body of the vacuum circuit breaker; the heating device also comprises a heating sleeve, a heating wire and a power supply, wherein the rotating shaft is sleeved with the heating sleeve and is used for being arranged at the connecting part of the outer part of the box body and the rotating shaft; the heating wire is arranged in the heating sleeve and used for heating the joint of the rotating shaft and the box body; the power supply is arranged on the box body and is electrically connected with the heating wire; the utility model discloses a cooperation of pointer, axis of rotation, heating jacket, heating wire and power, when the temperature was less than zero degree centigrade winter, the heater strip converted the electric energy of power into heat energy to heat the junction of axis of rotation and box, the heating jacket can play heat retaining effect, thereby reduces the ice between axis of rotation and the box, reduces the condition that the axis of rotation was frozen.
Description
Technical Field
The utility model belongs to the technical field of vacuum circuit breaker, more specifically say, relate to an indicating device for vacuum circuit breaker.
Background
An outdoor high-voltage alternating-current vacuum circuit breaker is switching equipment which can close, bear and break normal current of an operation loop and can also close, bear and break specified overload current within specified time; the outdoor high-voltage alternating-current vacuum circuit breaker in the prior art comprises a sealed box body, a main shaft, an insulating pull rod, a connecting lever, a vacuum arc extinguish chamber and a hoisting device, wherein the main shaft, the insulating pull rod, the connecting lever and the vacuum arc extinguish chamber are installed in the sealed box; the outside of the sealed box body is provided with a pointer which is used for indicating the closing and opening states of the vacuum circuit breaker; however, when the temperature is lower than zero degrees centigrade in winter, moisture in the air is desublimated at the joint of the pointer and the sealed box body, the pointer is frozen, the pointer is inconvenient to rotate, and the pointer is inconvenient to indicate the correct state.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an indicating device for vacuum circuit breaker aims at reducing the pointer because the inconvenient pivoted condition of being frozen.
In order to achieve the above object, the utility model adopts the following technical scheme: the indicating device for the vacuum circuit breaker comprises a pointer and a rotating shaft, wherein one end of the rotating shaft is fixedly connected with the pointer, and the other end of the rotating shaft is used for being rotatably connected with a box body of the vacuum circuit breaker; the heating device also comprises a heating sleeve, a heating wire and a power supply, wherein the rotating shaft is sleeved with the heating sleeve and is used for being arranged at the connecting part of the outer part of the box body and the rotating shaft; the heating wire is arranged in the heating sleeve and used for heating the joint of the rotating shaft and the box body; the power supply is arranged on the box body and is electrically connected with the heating wire.
As another embodiment of the application, a connecting ring is detachably connected to the heating sleeve, and the connecting ring is used for being fixedly connected with the box body; the heating jacket has elasticity and is equipped with dismantles the mouth, be provided with on the heating jacket and be used for sealing dismantle mouthful seal assembly.
As another embodiment of the present application, the connection ring is provided with an insertion hole, and the heating sleeve is connected with an insertion block for being inserted into the insertion hole.
As another embodiment of the present application, a spring piece is disposed in the insertion hole, and the spring piece is used for providing elasticity to the insertion block so that the insertion block is fixed in the insertion hole.
As another embodiment of the present application, the sealing assembly includes a sealing block, the sealing block is bonded or clamped with the heating jacket.
As another embodiment of the present application, a reset component is disposed on the rotating shaft, and the reset component is used for resetting the pointer after the pointer is rotated in a certain state, and the reset component is disposed in the box body.
As another embodiment of the present application, the reset assembly includes a rotation ring, a first torsion ring, a second torsion ring, and a connection unit; the rotating ring is fixedly connected with the rotating shaft, and the first torsion ring is arranged on one side of the rotating ring and is connected with the box body through a torsion spring; the second torsion ring is arranged on the other side of the rotating ring, is connected with the box body through a torsion spring, and has a rotating direction opposite to that of the first torsion ring; the connecting unit is arranged on the rotating ring and used for connecting the first torsion ring or the second torsion ring.
As another embodiment of the present application, a first connecting groove corresponding to a closed state is formed in the first torsion ring, and a second connecting groove corresponding to an open state is formed in the second torsion ring; the connecting unit is used for being connected with the first connecting groove or the second connecting groove.
As another embodiment of the present application, an accommodating groove is formed in the rotating ring, the connecting unit includes a rack disposed in the accommodating groove, a gear engaged with the rack, and a driving motor for driving the gear to rotate, and the driving motor is fixed in the accommodating groove; the rack is used for penetrating out of the rotating ring and is connected with the first connecting groove or the second connecting groove.
As another embodiment of the present application, the power source includes a solar panel for being disposed on the case.
The utility model provides a pair of an indicating device for vacuum circuit breaker's beneficial effect lies in: compared with the prior art, the utility model relates to an indicating device for vacuum circuit breaker passes through the cooperation of pointer, axis of rotation, heating jacket, heating wire and power, and when the temperature was less than zero degree centigrade in winter, the electric energy of power was converted into heat energy to the heater strip, thereby heats the junction of axis of rotation and box, and the heating jacket cover is established on the axis of rotation, can play heat retaining effect, thereby reduces the ice that desublimates between axis of rotation and the box, reduces the condition that the axis of rotation was frozen, thereby is convenient for the pointer to indicate vacuum circuit breaker correct state; the power that sets up on the box can provide the electric energy to the heater strip, because the heater strip sets up inside the heating jacket, and the heating jacket cover is established in the outside of axis of rotation to the heat that the heater jacket produced of being convenient for keeps warm to the heater strip, reduces the ice of the junction of axis of rotation and box, reduces the condition that the axis of rotation was frozen, the rotation of the pointer of being convenient for.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an indicating device for a vacuum circuit breaker according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a reset assembly of an indicating device for a vacuum circuit breaker according to an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic view of a plug hole portion of an indicating device for a vacuum circuit breaker according to an embodiment of the present invention;
FIG. 5 is an enlarged view of portion B of FIG. 4;
fig. 6 is a schematic view of a plug block portion of an indicating device for a vacuum circuit breaker according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a second connecting groove portion of an indicating device for a vacuum circuit breaker according to an embodiment of the present invention;
fig. 8 is a schematic view of a receiving groove portion of an indicating device for a vacuum circuit breaker according to an embodiment of the present invention.
In the figure: 1. a pointer; 2. a rotating shaft; 21. a limiting ring; 22. a stopper; 3. a box body; 31. a first stopper; 32. a second limiting block; 4. heating a jacket; 41. a disassembly port; 42. an insertion block; 421. a guide surface; 43. a sealing block; 5. a connecting ring; 51. inserting holes; 52. a spring plate; 6. a reset assembly; 61. a rotating ring; 611. accommodating grooves; 612. an opening; 62. a first torsion ring; 63. a second torque ring; 631. a second connecting groove; 64. a torsion spring; 65. a rack; 66. a gear; 67. the motor is driven.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 8, an indicating device for a vacuum circuit breaker according to the present invention will be described. An indicating device for a vacuum circuit breaker comprises a pointer 1 and a rotating shaft 2, wherein one end of the rotating shaft 2 is fixedly connected with the pointer 1, and the other end of the rotating shaft is used for being rotatably connected with a box body 3 of the vacuum circuit breaker; the heating device also comprises a heating sleeve 4, a heating wire and a power supply, wherein the rotating shaft 2 is sleeved with the heating sleeve 4 and is used for being arranged at the connecting part of the outer part of the box body 3 and the rotating shaft 2; the heating wire is arranged in the heating sleeve 4 and used for heating the joint of the rotating shaft 2 and the box body 3; the power supply is arranged on the box body 3 and is electrically connected with the heating wires.
The utility model provides a pair of indicating device for vacuum circuit breaker, compared with the prior art, the utility model discloses an indicating device for vacuum circuit breaker passes through pointer 1, axis of rotation 2, heating jacket 4, heating wire and the cooperation of power, when the temperature is less than zero degree centigrade in winter, the electric energy of power is converted into heat energy to the heater strip, thereby heat the junction of axis of rotation 2 and box 3, the heating jacket 4 cover is established on axis of rotation 2, can play the heat retaining effect, thereby reduce the ice that melts between axis of rotation 2 and the box 3, reduce the condition that axis of rotation 2 is frozen, thereby be convenient for pointer 1 to indicate the correct state of vacuum circuit breaker; the power that sets up on box 3 can provide the electric energy to the heater strip, because the heater strip sets up inside heating jacket 4, and 4 covers of heating jacket establish in the outside of axis of rotation 2 to the heat that the heater jacket 4 produced the heater strip of being convenient for keeps warm, reduces the ice of the junction of axis of rotation 2 and box 3, reduces the condition that axis of rotation 2 was frozen, the rotation of the pointer 1 of being convenient for.
As a specific embodiment of the indicating device for a vacuum circuit breaker provided by the present invention, please refer to fig. 1 to 8, a connecting ring 5 is detachably connected to a heating jacket 4, and the connecting ring 5 is used for being fixedly connected to a box body 3; the heating jacket 4 is elastic and is provided with a disassembly port 41, and a sealing assembly for closing the disassembly port 41 is arranged on the heating jacket 4; one end of the rotating shaft 2 extends into the box body 3, one end of the rotating shaft 2 extending into the box body 3 is fixedly connected with a limiting ring 21, a stop block 22 is fixedly arranged on the limiting ring 21, a first limiting block 31 and a second limiting block 32 are fixedly connected to the inner wall of the box body 3, and the first limiting block 31 and the second limiting block 32 are both positioned on a motion path of the stop block 22; the first stopper 31 corresponds to the position of the vacuum circuit breaker in the closed state, and the second stopper 32 corresponds to the position of the vacuum circuit breaker in the open state; the first stopper 31 and the second stopper 32 abut against the stopper 22, so that the rotation range of the rotating shaft 2 can be limited, and the pointer 1 can conveniently indicate an open state and a closed state; the connecting ring 5 is fixedly connected with the box body 3, the rotating shaft 2 is rotatably connected with the connecting ring 5, and the heating sleeve 4 is detachably connected with the connecting ring 5, so that the situation that the rotating shaft 2 and the connecting ring 5 are frozen can be reduced; the heating jacket 4 is provided with the dismounting port 41, so that the heating jacket 4 can be conveniently dismounted, and the heating jacket 4 can be conveniently replaced; the sealing assembly can seal the disassembly port 41, so that heat preservation is facilitated; one end of the heating sleeve 4 is attached to the connecting ring 5, and the other end is attached to the pointer 1.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 8, a connection ring 5 is provided with a connection hole 51, and a connection block 42 for connecting with the connection hole 51 is connected to the heating jacket 4; the heating sleeve 4 is spliced with the splicing hole 51 on the connecting ring 5 through the splicing block 42, and the connection between the heating sleeve 4 and the connecting ring 5 can be enhanced, so that the heating sleeve 4 can conveniently preserve heat of the rotating shaft 2, and the situation that the rotating shaft 2 is frozen is reduced.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 8, a spring leaf 52 is disposed in the insertion hole 51, and the spring leaf 52 is used for providing an elastic force to the insertion block 42 so as to fix the insertion block 42 in the insertion hole 51; the insertion block 42 is provided with a guide surface 421 at one end close to the insertion hole 51, and the insertion block 42 is inserted into the insertion hole 51 through the guide surface 421, so that the spring piece 52 in the insertion hole 51 is pressed against the insertion block 42, the insertion block 42 is fixed in the insertion hole 51, and the connection between the heating sleeve 4 and the connection ring 5 is enhanced.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 8, the sealing assembly includes a sealing block 43, and the sealing block 43 is bonded or clamped with the heating jacket 4; in this embodiment, bonding is taken as an example for explanation, the sealing block 43 is disposed at the detaching port 41 of the heating sleeve 4, a magic tape is disposed at the connection position of the sealing block 43 and the detaching port 41, the magic tape comprises a hook hair surface and a fluff surface, the hook hair surface of the magic tape is fixedly connected with the detaching port 41 of the heating sleeve 4, and the fluff surface of the magic tape is fixedly connected with the sealing block 43; after the sealing block 43 is placed at the detaching port 41, the sealing block 43 is bonded to the fluff surface at the detaching port 41 through the fluff surface, thereby facilitating the closing of the detaching port 41 on the heating jacket 4. The heating jacket 4 can be conveniently insulated.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 8, a reset component 6 for rotating the pointer 1 and resetting the pointer 1 in a certain state is disposed on the rotating shaft 2, and the reset component 6 is disposed in the box body 3; after the rotating shaft 2 is rotated manually, the rotating shaft 2 is reset under the action of the reset component 6, so that the pointer 1 on the rotating shaft 2 can be conveniently and stably pointed to a certain state, and whether the pointer 1 is frozen or not can be determined.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 8, the reset assembly 6 includes a rotating ring 61, a first torque ring 62, a second torque ring 63 and a connecting unit; the rotating ring 61 is fixedly connected with the rotating shaft 2, the first torsion ring 62 is arranged on one side of the rotating ring 61 and is connected with the box body 3 through a torsion spring 64, one end of the torsion spring 64 is fixedly connected with the first torsion ring 62, and the other end of the torsion spring 64 is fixedly connected with the box body 3; the second torsion ring 63 is arranged on the other side of the rotating ring 61 and is connected with the box body 3 through a torsion spring 64, the rotating direction of the second torsion ring is opposite to that of the first torsion ring 62, one end of the torsion spring 64 is fixedly connected with the second torsion ring 63, and the other end of the torsion spring is fixedly connected with the box body 3; a connection unit provided on the rotation ring 61 for connecting the first torque ring 62 or the second torque ring 63; the rotating shaft 2 passes through the first torque ring 62 and the second torque ring 63; when the indicating needle 1 indicates the open state, the rotating ring 61 is connected with the first torque ring 62 through the connection unit, and since the initial state of the first torque ring 62 corresponds to the position of the open state of the vacuum circuit breaker, the indicating needle 1 can be directed to the open position; after the pointer 1 is manually rotated, the rotating ring 61 can drive the first torsion ring 62 to rotate, so that the torsion spring 64 on the first torsion ring 62 generates a torque, and after the pointer 1 is loosened, the pointer 1 can be reset under the action of the torque, so that the pointer 1 points to a disconnected position; when the pointer 1 indicates the closed state, the rotating ring 61 is connected with the second torque ring 63 through the connecting unit, and since the initial state of the second torque ring 63 corresponds to the position of the closed state of the vacuum circuit breaker, the pointer 1 can be pointed to the closed position; after the pointer 1 is manually rotated, the rotating ring 61 can drive the second torque ring 63 to rotate, so that the torsion spring 64 on the second torque ring 63 can generate torque, and after the pointer 1 is loosened, the pointer 1 can reset under the action of the torque, so that the pointer 1 points to a closed position; so that the pointer 1 always points to a certain position.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 8, a first connecting groove corresponding to the open state is disposed on the first torsion ring 62, and a second connecting groove 631 corresponding to the closed state is disposed on the second torsion ring 63; the connection unit is used for connecting with the first connection groove or the second connection groove 631; the rotating ring 61 is connected to the first or second connecting groove 631 by a connecting unit so that the pointer 1 can be reset even if the pointer 1 is rotated after the pointer 1 points to the open or closed state, thereby pointing the pointer 1 to a correct position; whether the pointer 1 is frozen or not can be determined by rotating the pointer 1, so that whether the working state of the heating jacket 4 is normal or not is determined conveniently, and the heating jacket 4 which works abnormally is replaced conveniently.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 8, the rotating ring 61 is provided with an accommodating groove 611, the connecting unit includes a rack 65 disposed in the accommodating groove 611, a gear 66 engaged with the rack 65, and a driving motor 67 for driving the gear 66 to rotate, the driving motor 67 is fixed in the accommodating groove 611; the rack 65 is used for penetrating out of the rotating ring 61 and is connected with the first connecting groove or the second connecting groove 631; both ends of the accommodating groove 611 are provided with openings 612 for sliding out the rack 65; the first connection groove corresponds to an open position, and the second connection groove 631 corresponds to a closed state; when the pointer 1 points to the disconnected position, the driving motor 67 drives the gear 66 to rotate, so as to drive the rack 65 to slide out of the opening 612, and the rack 65 slides into the first accommodating groove 611; after the pointer 1 is manually rotated, the first torsion ring 62 is driven to rotate, and after the pointer 1 is loosened, the pointer 1 is reset under the action of the torsion spring 64, so that the pointer 1 points to the disconnected position; when the pointer 1 points to the closed position, the driving motor 67 drives the gear 66 to rotate, so as to drive the rack 65 to slide out of the opening 612, and the rack 65 slides into the second accommodating groove 611; after the pointer 1 is manually rotated, the second torsion ring 63 is driven to rotate, and after the pointer 1 is loosened, the pointer 1 is reset under the action of the torsion spring 64, so that the pointer 1 points to the closed position.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 8, the power source includes a solar panel, and the solar panel is arranged on the box body 3; solar cell panel fixes the outer wall at box 3, and solar cell panel can store the electric energy to can provide the electric energy to heater strip and driving motor 67, thereby be convenient for the heating of heater strip and driving motor 67's rotation.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides an indicating device for vacuum circuit breaker, includes pointer (1) and axis of rotation (2), the one end of axis of rotation (2) with pointer (1) fixed connection, the other end is used for rotating with vacuum circuit breaker's box (3) and is connected, its characterized in that still includes:
the heating sleeve (4) is sleeved on the rotating shaft (2) and is arranged at the connecting position of the outer part of the box body (3) and the rotating shaft (2);
the heating wire is arranged in the heating sleeve (4) and used for heating the connection part of the rotating shaft (2) and the box body (3); and
and the power supply is arranged on the box body (3) and is electrically connected with the heating wire.
2. An indicating device for a vacuum circuit breaker according to claim 1, characterized in that a connecting ring (5) is detachably connected to the heating jacket (4), the connecting ring (5) is fixedly connected to the tank (3); the heating jacket (4) has elasticity and is equipped with dismantlement mouth (41), be provided with on the heating jacket (4) and be used for sealing dismantle the seal assembly of mouth (41).
3. The indicating device for the vacuum circuit breaker according to claim 2, wherein the connecting ring (5) is provided with an insertion hole (51), and the heating sleeve (4) is connected with an insertion block (42) for being inserted into the insertion hole (51).
4. An indicating device for a vacuum circuit breaker according to claim 3, wherein a spring plate (52) is provided in the insertion hole (51), and the spring plate (52) is used for providing an elastic force to the insertion block (42) to fix the insertion block (42) in the insertion hole (51).
5. An indicating device for a vacuum interrupter as claimed in claim 2, wherein the sealing assembly comprises a sealing block (43), the sealing block (43) being bonded or snapped to the heating jacket (4).
6. An indicating device for a vacuum circuit breaker according to claim 1, wherein a reset means (6) for resetting the indicating needle (1) after rotating the indicating needle (1) in a certain state is provided on the rotating shaft (2), and the reset means (6) is provided in the case (3).
7. An indicating device for a vacuum interrupter as claimed in claim 6, characterized in that the reset assembly (6) comprises:
the rotating ring (61) is fixedly connected with the rotating shaft (2);
a first torsion ring (62) disposed at one side of the rotation ring (61) and connected to the case (3) by a torsion spring (64);
the second torque ring (63) is arranged on the other side of the rotating ring (61), is connected with the box body (3) through a torsion spring (64), and has the rotating direction opposite to that of the first torque ring (62); and
and a connection unit provided on the rotation ring (61) for connecting the first torsion ring (62) or the second torsion ring (63).
8. An indicating device for a vacuum circuit breaker according to claim 7, wherein the first torsion ring (62) is provided with a first coupling groove for corresponding to a closed state, and the second torsion ring (63) is provided with a second coupling groove (631) for corresponding to an open state; the connecting unit is used for being connected with the first connecting groove or the second connecting groove (631).
9. An indicating device for a vacuum circuit breaker according to claim 8, wherein the rotating ring (61) is formed with a receiving groove (611), the connecting unit comprises a rack (65) disposed in the receiving groove (611), a gear (66) engaged with the rack (65), and a driving motor (67) for driving the gear (66) to rotate, the driving motor (67) is fixed in the receiving groove (611); the rack (65) is used for penetrating out of the rotating ring (61) and is connected with the first connecting groove or the second connecting groove (631).
10. An indicating device for a vacuum interrupter as claimed in claim 1, characterized in that the power source comprises a solar panel for being arranged on the tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922482255.7U CN211555769U (en) | 2019-12-31 | 2019-12-31 | Indicating device for vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922482255.7U CN211555769U (en) | 2019-12-31 | 2019-12-31 | Indicating device for vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211555769U true CN211555769U (en) | 2020-09-22 |
Family
ID=72512880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922482255.7U Active CN211555769U (en) | 2019-12-31 | 2019-12-31 | Indicating device for vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211555769U (en) |
-
2019
- 2019-12-31 CN CN201922482255.7U patent/CN211555769U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 050035 No. 498 Taihang street, high tech Zone, Shijiazhuang, Hebei Patentee after: Hebei Tuopu Electric Co.,Ltd. Country or region after: China Address before: 050000 No. 498 Taihang street, high tech Zone, Shijiazhuang City, Hebei Province Patentee before: HEBEI TUOPU ELECTRICITY Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |