CN115692050A - Switching mechanism of pulse heavy current switching device - Google Patents
Switching mechanism of pulse heavy current switching device Download PDFInfo
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- CN115692050A CN115692050A CN202211089432.5A CN202211089432A CN115692050A CN 115692050 A CN115692050 A CN 115692050A CN 202211089432 A CN202211089432 A CN 202211089432A CN 115692050 A CN115692050 A CN 115692050A
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- block assembly
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Abstract
The invention provides a switching mechanism of a pulse high-current switching device, which consists of a switching mechanism base, a U-shaped bracket, a lower pressing block assembly, an upper pressing block assembly, a hydraulic cylinder and a spring. The lower press block component is arranged at the bottom of the U-shaped bracket. The hydraulic cylinder is fixed on the upper part of the U-shaped support, and the upper pressing block assembly is connected with the piston rod. The U-shaped support, together with the hydraulic cylinder, the upper pressing block assembly and the lower pressing block assembly, is arranged on the switch mechanism base and can only slide up and down on the switch mechanism base. One end of the spring is connected to the U-shaped support, and the other end of the spring is connected to the base of the switch mechanism. The hydraulic cylinder can drive the upper pressing block assembly to be connected and disconnected with the input and output anode plates and drive the lower pressing block assembly to be connected and disconnected with the input and output cathode plates. The invention can realize the connection of the input anode plate and the output anode plate and the connection of the input cathode plate and the output cathode plate at the same time by only one switch mechanism.
Description
Technical Field
The invention belongs to the field of pulse heavy current discharge, and particularly relates to a switching mechanism of a pulse heavy current switching device.
Background
In the process of discharging the pulse large current, the power supply system is used as an energy storage system, and outputs the megaampere pulse large current after modulation to supply power to a load. Depending on the current requirements of different loads, the corresponding load paths need to be switched on and off. In order to meet the requirements, a pulse high-current loop on-off switching device is needed to realize the on-off of a corresponding load path. The core mechanism of the pulse high-current loop on-off switching device is a switching mechanism of an input anode plate, an output anode plate and an input cathode plate and an output cathode plate, namely a switching mechanism of the pulse high-current switching device.
In the switching mechanism of the pulse high-current switching device, the press block for connecting the input anode plate and the output anode plate and the press block for connecting the input cathode plate and the output cathode plate bear larger electromagnetic repulsion force during through-flow to enable the press block to be separated from the anode plate, so the switching mechanism must apply pressing force on the press block to resist the electromagnetic repulsion force borne by the press block, and the press block is not separated from the anode plate. When the input and output anode plates and the input and output cathode plates are to be disconnected, the switch mechanism also needs to make the pressing block be separated from the contact with the electrode plates.
In the prior application, two independent switch mechanisms are adopted to switch on and off, the two independent switch mechanisms are respectively fixed on the main structure of the pulse high-current switch device, the reaction force of the pressing force applied by the two independent switch mechanisms to the pressing block acts on the main structure of the pulse high-current switch device, and in order to bear the reaction force, the main structure of the pulse high-current switch device needs to adopt a robust structure to increase the strength and the rigidity. Due to the above reasons, the structure of the pulse high-current switching device is complicated, and the weight is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a switching mechanism of a pulse high-current switching device, the pulse high-current switching device adopting the mechanism can simultaneously realize the connection of an input anode plate and an output anode plate and the connection of an input cathode plate and an output cathode plate by using only one switching mechanism, and the reaction force of the pressing force applied by the switching mechanism to a pressing block is only acted in the switching mechanism and is not acted on other parts of the pulse high-current switching device, thereby simplifying the structure of a high-current switch and reducing the weight of the high-current switch.
In order to achieve the purpose, the invention adopts the technical scheme that:
a switching mechanism of a pulse high-current switching device comprises a switching mechanism base, a U-shaped support, a lower pressing block assembly, an upper pressing block assembly, a hydraulic cylinder and a spring; the lower press block assembly is positioned in the U-shaped support and is arranged at the bottom of the U-shaped support; the upper pressing block assembly is connected with a piston rod of the hydraulic cylinder, the hydraulic cylinder is fixed on the upper part of the U-shaped support through a cylinder body of the hydraulic cylinder, and the upper pressing block assembly is positioned in the U-shaped support; the U-shaped support, the hydraulic cylinder, the lower pressing block assembly and the upper pressing block assembly are arranged on the base of the switch mechanism, and the U-shaped support only has the freedom degree of sliding up and down on the base of the switch mechanism; and two sides of the U-shaped support and the base of the switch mechanism are respectively provided with a spring, one end of each spring is connected with the U-shaped support, and the other end of each spring is connected with the base of the switch mechanism.
Furthermore, the switch mechanism base is in a U-shaped structure, and guide rails are processed on the left side and the right side of the switch mechanism base; a groove is respectively processed on the left side and the right side of the U-shaped bracket; the grooves on the left side and the right side of the U-shaped support are matched with the guide rails on the left side and the right side of the switch mechanism base to form a sliding pair capable of only sliding up and down.
Furthermore, the lower pressing block assembly consists of a copper pressing block, an insulation box and a lower pressing block steel backing plate, wherein the copper pressing block is positioned outside the insulation box and fixedly connected with the insulation box, and the lower pressing block steel backing plate is positioned inside the insulation box and fixedly connected with the insulation box; the upper pressing block assembly consists of a copper pressing block, an insulation box and an upper pressing block steel base plate, wherein the copper pressing block is positioned outside the insulation box and fixedly connected with the insulation box, and the upper pressing block steel base plate is positioned inside the insulation box and fixedly connected with the insulation box.
Further, a concave lower press block steel base plate spherical surface is processed on a lower press block steel base plate of the lower press block assembly; an upper pressing block steel backing plate of the upper pressing block assembly is processed to form an inner concave spherical surface of the upper pressing block steel backing plate.
Furthermore, the lower press block component is connected with the spherical component through a spherical pair formed by the spherical surface of the steel base plate of the lower press block and the spherical surface on the spherical component and is fixed at the bottom of the U-shaped bracket through the spherical component; the upper pressing block assembly is connected with the piston rod through a spherical pair formed by the spherical surface of the upper pressing block steel base plate and the spherical surface of the piston rod.
Has the advantages that:
the switching mechanism of the pulse high-current switching device only adopts one hydraulic cylinder to drive the upper press block assembly to switch on and switch off the input anode plate and the output anode plate, and drive the lower press block assembly to switch on and switch off the input cathode plate and the output cathode plate, thereby simplifying the structure of the switching mechanism. And the reaction force of the hydraulic cylinder to the pressing force applied by the pressing block assembly only acts on the cylinder body and the U-shaped support of the hydraulic cylinder and does not act on other parts of the pulse high-current switching device, the U-shaped support bears the pulling force, the lighter U-shaped support can bear the larger pulling force, and the weight of the high-current switch adopting the switching mechanism can be effectively reduced.
Drawings
Fig. 1 is a schematic diagram of a switching mechanism of a pulsed high current switching device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a base of a switching mechanism of a pulsed high current switching device according to an embodiment of the present invention;
fig. 3 is a schematic view of a U-shaped bracket of a pulsed high current switching device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a lower pressure block assembly of a switching mechanism of a pulsed high-current switching device according to an embodiment of the present invention;
fig. 5 is a schematic view of a spherical member of a switching mechanism of a pulsed high current switching device according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating an assembly of a lower press block assembly and a spherical member of a switching mechanism of a pulsed high-current switching device according to an embodiment of the present invention;
fig. 7 is a schematic structural view of an insulation protection box of a switching mechanism of a pulsed high-current switching device according to an embodiment of the present invention;
fig. 8 is a schematic view of the assembly of the lower insulating assembly and the U-shaped bracket, and the assembly of the U-shaped bracket and the base of the switching mechanism of the pulsed high-current switching device according to the embodiment of the present invention;
fig. 9 is a schematic view of a hydraulic cylinder of a switching mechanism of the pulsed high current switching device according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram of an upper press block assembly of a switching mechanism of the pulsed high-current switching device according to the embodiment of the present invention;
fig. 11 is a schematic view of connection between an upper pressure block assembly of a switching mechanism of the pulsed high-current switching device according to the embodiment of the present invention and a hydraulic cylinder;
fig. 12 is a schematic structural view of a high-current switching device according to an embodiment of the present invention, in which the input anode plate and the output anode plate are disconnected from each other, and the input cathode plate and the output cathode plate are disconnected from each other;
fig. 13 is a schematic structural diagram of a high-current switching device according to an embodiment of the present invention, in which the input anode plate and the output anode plate are connected, and the input cathode plate and the output cathode plate are connected.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the switching mechanism of a high current switching device of the present invention comprises a switching mechanism base 1, a U-shaped bracket 2, a lower press block assembly 3, an upper press block assembly 4, a hydraulic cylinder 5 and two springs 6. The hydraulic cylinder 5 and the upper pressing block assembly 4 are fixed on the upper part of the U-shaped support 2 through a hydraulic cylinder body 5-4, and the upper pressing block assembly 4 is positioned in the U-shaped support 2. The U-shaped support 2, the hydraulic cylinder 5, the upper pressing block assembly 4 and the lower pressing block assembly 3 are mounted on the switch mechanism base 1, the switch mechanism base 1 is of a U-shaped structure, and as shown in figure 2, guide rails 1-1 are machined on the left side and the right side of the U-shaped support 1. The U-shaped bracket 2 is structured as shown in fig. 3, and grooves 2-1 matched with left and right guide rails 1-1 of the U-shaped bracket 2 are respectively processed at the left and right sides of the U-shaped bracket 2. As shown in fig. 2 and 3, the grooves 2-1 on the left and right sides of the U-shaped bracket 2 are matched with the guide rails 1-1 on the left and right sides of the switch mechanism base 1 to form a sliding pair, so that the U-shaped bracket 2 has only one degree of freedom to slide up and down along the guide rails 1-1 on the left and right sides of the switch mechanism base 1. The left side and the right side of the U-shaped support 2 are respectively fixed with an upper spring hook 10, and the left side and the right side of the switch mechanism base 1 are respectively fixed with a lower spring hook 11. The U-shaped support 2 and the left side and the right side of the switch mechanism base 1 are respectively fixed with a spring 6, one end of the spring 6 is connected to a spring upper hook 10, and the other end of the spring 6 is connected to a spring lower hook 11.
As shown in fig. 8, the insulation protection boxes 9 shown in fig. 7 are respectively located on the left and right sides inside the U-shaped bracket 2, and are mounted in close contact with the inner walls of the left and right sides of the U-shaped bracket 2. The lower press block assembly 3 is mounted at the bottom of the U-shaped bracket 2 by a spherical member 7 inside the U-shaped bracket 2.
As shown in 4,6, the lower press block assembly 3 is composed of a copper press block 3-1, an insulation box 3-2 and a lower press block steel backing plate 3-3, the copper press block 3-2 is located at the upper portion of the lower press block assembly 3, the insulation box 3-2 is located at the lower portion of the copper press block 3-1 and fixedly connected with the copper press block 3-1, and the lower press block steel backing plate 3-3 is located in the insulation box 3-2 and fixedly connected with the insulation box 3-2. The lower part of the lower pressing block steel backing plate 3-3 is provided with a concave lower pressing block steel backing plate spherical surface 3-4.
As shown in 5,6, the upper part of spherical member 7 is machined with a convex spherical surface 7-1, and the cylindrical surface of spherical member 7 is machined with two grooves 7-2. The lower pressing block component 3 is connected with the spherical component 7 through a spherical pair formed by the spherical surface 3-4 of the lower pressing block steel backing plate and the spherical surface 7-1 on the spherical component 7. The two lower pressing block limiting plates 8 are inserted into the grooves 7-2 on the cylindrical surface of the spherical piece 7 and fixed at the bottom of the lower pressing block steel backing plate 3-3.
As shown in figures 9 and 11, the lower part of a piston rod 5-1 of the hydraulic cylinder 5 is provided with a convex piston rod spherical surface 5-2, and the upper part of the piston rod spherical surface 5-2 is provided with a circular groove 5-3.
As shown in figure 10, the upper pressing block assembly 4 is composed of a copper pressing block 3-1, an insulation box 3-2 and an upper pressing block steel backing plate 4-1, the copper pressing block 3-1 is located at the lower portion, the insulation box 3-2 is located at the upper portion of the copper pressing block 3-1 and fixedly connected with the copper pressing block 3-1, and the upper pressing block steel backing plate 4-1 is located in the insulation box 3-2 and fixedly connected with the insulation box 3-2. The upper part of the upper pressing block steel backing plate 4-1 is provided with an inner concave upper pressing block steel backing plate spherical surface 4-2 with the same radius as the piston rod spherical surface 5-2.
As shown in figure 11, the upper briquetting component 4 is connected with the piston rod 5-1 through a spherical pair formed by the spherical surface 4-2 of the upper briquetting steel backing plate and the spherical surface 5-2 of the piston rod, and the two upper briquetting limit plates 12 are inserted into the annular groove 5-2 at the lower part of the piston rod 5-1 of the hydraulic cylinder 5 and are fixedly connected with the upper briquetting steel backing plate 4-1.
As shown in fig. 12, the switching mechanism base 1 is fixed to a base 13 of the pulsed high-current switching device, and the switching mechanism of the pulsed high-current switching device is located in the middle of the base 13. An input cathode plate 15 and an output cathode plate 17 are arranged on the upper portion of the lower pressing block assembly 3 on the left side and the right side of the switch mechanism, and the input cathode plate 15 and the output cathode plate 17 are installed on the base 13 through a lower insulation plate 18; an input anode plate 14 is arranged on the input cathode plate 15, the input anode plate 14 is positioned at the lower part of the upper pressing block component 4, the input anode plate 14 is insulated from the input cathode plate 15 through a middle insulating plate 19, and an upper insulating plate 20 is arranged at the upper part of the input anode plate 14. An output anode plate 16 is arranged on the output cathode plate 17, the output anode plate 16 is positioned at the lower part of the upper briquetting component 4, the output anode plate 16 is insulated from the output cathode plate 17 through a middle insulating plate 19, and an upper insulating plate 20 is arranged at the upper part of the output anode plate 16. Thus, the input cathode plate 15, the input anode plate 14, and the output cathode plate 17, the output anode plate 16 are located between the upper press block assembly 4 and the lower press block assembly 3. The input anode plate 14, the output anode plate 16 and the upper pressing block assembly 4 have vertically overlapped parts, and an insulation gap is reserved; the input cathode plate 15, the output cathode plate 17 and the lower press block component 3 are provided with parts which are overlapped up and down, and an insulation gap is reserved; the input anode plate 14 and the output anode plate 16, and the input cathode plate 15 and the output cathode plate 17 are not conducted with each other, and the pulse large current switching device is in an off state.
As shown in fig. 13, when the input anode plate 14 and the output anode plate 16 are to be connected and the input cathode plate 15 and the output cathode plate 17 are to be connected, the piston rod 5-1 of the hydraulic cylinder 5 extends out to drive the upper pressing block assembly 4 to move downwards, and when the upper pressing block assembly 4 contacts the input anode plate 14 and the output anode plate 16, the upper pressing block assembly 4 does not move downwards any more; when a piston rod 5-1 of the hydraulic cylinder 5 continues to extend out, a cylinder body 5-4 of the hydraulic cylinder moves upwards relative to the upper press block assembly 4, the cylinder body 5-4 of the hydraulic cylinder drives the U-shaped support 2 and the lower press block assembly 3 to move upwards along the guide rails 1-1 on the left side and the right side of the switch mechanism base 1 until the lower press block assembly 3 contacts the input cathode plate 15 and the output cathode plate 17, and at the moment, the two springs 6 are stretched; then, the pressure in the hydraulic cylinder 5 continues to rise, so that the pressing force of the upper pressing block assembly 4 on the input anode plate 14 and the output anode plate 16 and the pressing force of the lower pressing block assembly 3 on the input cathode plate 15 and the output cathode plate 17 are further increased until reaching the pressing force required by the pulse high-current through-flow, so as to resist the electromagnetic repulsion force applied to the upper pressing block assembly 4 and the lower pressing block assembly 3 when the high-current through-flow. At this time, the upper press block assembly 4 is connected to the input anode plate 14 and the output anode plate 16, and the lower press block assembly 3 is connected to the input cathode plate 15 and the output cathode plate 17. The pulsed high current switching device is in an on state at this time, providing conditions for the passage of the pulsed high current.
If there are small unevenness between the input anode plate 14, the output anode plate 16 and the input cathode plate 15, the output cathode plate 17, because there are spherical pair connections between the upper press block assembly 4 and the piston rod 5-1 of the hydraulic cylinder 5, and between the lower press block assembly 3 and the spherical member 7, it is possible to compensate for these unevenness, and to ensure sufficient contact of the upper press block assembly 4 with the input anode plate 14, the output anode plate 16, and the lower press block assembly 3 with the input cathode plate 15, the output cathode plate 17.
When the input anode plate 14 and the output anode plate 16 are to be disconnected, and the input cathode plate 15 and the output cathode plate 17 are to be disconnected, the piston rod 5-1 retracts into the hydraulic cylinder body 5-4, the upper press block assembly 4 is lifted up from the input anode plate 14 and the output anode plate 16, the hydraulic cylinder 5, the upper press block assembly 4, the lower press block assembly 3 and the U-shaped support 2 fall along the guide rails 1-1 on the left side and the right side of the switch mechanism base 1 under the action of gravity and the pulling force of the two springs 6, at the moment, gaps between the upper press block assembly 4 and the input anode plate 14 and the output anode plate 16, and between the lower press block assembly 3 and the input cathode plate 15 and the output cathode plate 117 are restored before being connected, and the pulse high-current switch device is in a disconnected state.
It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.
Claims (5)
1. A switching mechanism of a pulsed high current switching device is characterized in that: the device comprises a switch mechanism base (1), a U-shaped support (2), a lower pressing block component (3), an upper pressing block component (4), a hydraulic cylinder (5) and a spring (6); the lower press block assembly (3) is positioned in the U-shaped support (2) and is arranged at the bottom of the U-shaped support (2); the upper pressing block assembly (4) is connected with a piston rod (5-1) of the hydraulic cylinder (5), the hydraulic cylinder (5) is fixed on the upper part of the U-shaped support (2) through a hydraulic cylinder body (5-4), and the upper pressing block assembly (4) is positioned in the U-shaped support (2); the U-shaped support (2) together with the hydraulic cylinder (5), the lower pressing block assembly (3) and the upper pressing block assembly (4) are arranged on the switch mechanism base (1), and the U-shaped support (2) only has the freedom degree of sliding up and down on the switch mechanism base (1); two sides of the U-shaped support (2) and the switch mechanism base (1) are respectively provided with a spring (6), one end of each spring (6) is connected with the U-shaped support (2), and the other end of each spring is connected with the switch mechanism base (1).
2. A switching mechanism for a high-pulse current switching device according to claim 1, wherein the switching mechanism base (1) is of a "U" shape, and guide rails (1-1) are formed on both left and right sides of the switching mechanism base (1); a groove (2-1) is respectively processed at the left side and the right side of the U-shaped bracket (2); the grooves (2-1) on the left and right sides of the U-shaped bracket (2) are matched with the guide rails (1-1) on the left and right sides of the switch mechanism base (1) to form a sliding pair which can only slide up and down.
3. The switching mechanism of a high-pulse-current switching device according to claim 1, wherein the lower press block assembly (3) is composed of a copper press block (3-1), an insulation box (3-2) and a lower press block steel backing plate (3-3), the copper press block (3-1) is positioned outside the insulation box (3-2) and fixedly connected with the insulation box (3-2), and the lower press block steel backing plate (3-3) is positioned inside the insulation box (3-2) and fixedly connected with the insulation box (3-2); the upper pressing block assembly (4) is composed of a copper pressing block (3-1), an insulation box (3-2) and an upper pressing block steel backing plate (4-1), the copper pressing block (3-1) is located outside the insulation box (3-2) and fixedly connected with the insulation box (3-2), and the upper pressing block steel backing plate (4-1) is located inside the insulation box (3-2) and fixedly connected with the insulation box (3-2).
4. A switching mechanism for a high-pulse-current switching device according to claim 3, characterized in that the lower press block steel backing plate (3-3) of the lower press block assembly (3) is provided with a concave lower press block steel backing plate spherical surface (3-4); an upper briquetting steel backing plate (4-1) of the upper briquetting component (4) is processed with an inner concave upper briquetting steel backing plate spherical surface (4-2).
5. A switching mechanism for a pulsed high current switching device, according to claim 1, characterized in that the lower press block assembly (3) is connected to the spherical member (7) through a spherical pair formed by the spherical surface (3-4) of the lower press block steel backing plate and the spherical surface (7-1) on the spherical member (7), and is fixed to the bottom of the U-shaped bracket (2) through the spherical member (7); the upper pressing block component (4) is connected with the piston rod (5-1) through a spherical pair formed by the spherical surface (4-2) of the upper pressing block steel base plate and the spherical surface (5-2) of the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211089432.5A CN115692050B (en) | 2022-09-07 | 2022-09-07 | Switching mechanism of pulse high-current switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211089432.5A CN115692050B (en) | 2022-09-07 | 2022-09-07 | Switching mechanism of pulse high-current switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115692050A true CN115692050A (en) | 2023-02-03 |
| CN115692050B CN115692050B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211089432.5A Active CN115692050B (en) | 2022-09-07 | 2022-09-07 | Switching mechanism of pulse high-current switching device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0883147A2 (en) * | 1997-06-03 | 1998-12-09 | Vimatic S.r.l. | Hydraulic or pneumatic pressure differential electric switch |
| CN1242586A (en) * | 1998-07-21 | 2000-01-26 | 易通公司 | Fault current tolerable contactor |
| JP2000336427A (en) * | 1999-05-28 | 2000-12-05 | Fuji Electronics Industry Co Ltd | Cylinder type switch |
| CN104170039A (en) * | 2011-11-18 | 2014-11-26 | 沙尔特宝有限公司 | High-current switch |
| CN106783263A (en) * | 2016-12-16 | 2017-05-31 | 平高集团有限公司 | Divide-shut brake buffer unit and the Fast mechanical switch using the device |
| US20220044896A1 (en) * | 2018-12-18 | 2022-02-10 | Eaton Intelligent Power Limited | Switching device for guiding and switching of load currents |
-
2022
- 2022-09-07 CN CN202211089432.5A patent/CN115692050B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0883147A2 (en) * | 1997-06-03 | 1998-12-09 | Vimatic S.r.l. | Hydraulic or pneumatic pressure differential electric switch |
| CN1242586A (en) * | 1998-07-21 | 2000-01-26 | 易通公司 | Fault current tolerable contactor |
| JP2000336427A (en) * | 1999-05-28 | 2000-12-05 | Fuji Electronics Industry Co Ltd | Cylinder type switch |
| CN104170039A (en) * | 2011-11-18 | 2014-11-26 | 沙尔特宝有限公司 | High-current switch |
| CN106783263A (en) * | 2016-12-16 | 2017-05-31 | 平高集团有限公司 | Divide-shut brake buffer unit and the Fast mechanical switch using the device |
| US20220044896A1 (en) * | 2018-12-18 | 2022-02-10 | Eaton Intelligent Power Limited | Switching device for guiding and switching of load currents |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115692050B (en) | 2023-08-15 |
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