CN113300249A - Low-voltage distribution protection device - Google Patents
Low-voltage distribution protection device Download PDFInfo
- Publication number
- CN113300249A CN113300249A CN202110661882.6A CN202110661882A CN113300249A CN 113300249 A CN113300249 A CN 113300249A CN 202110661882 A CN202110661882 A CN 202110661882A CN 113300249 A CN113300249 A CN 113300249A
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- China
- Prior art keywords
- hole
- rod
- sliding
- horizontal guide
- fixedly connected
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/52—Mobile units, e.g. for work sites
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
Abstract
The invention discloses a low-voltage power distribution protection device which comprises a distribution box main body and an enclosing protection assembly arranged below the distribution box main body, wherein the left side and the right side of the enclosing protection assembly are symmetrically provided with a shock absorption assembly, the front part of the enclosing protection assembly is provided with a symmetrically arranged limiting assembly, and the enclosing protection assembly comprises a first horizontal guide rod, a second horizontal guide rod and symmetrically arranged enclosing seats. According to the invention, the surrounding protection component is arranged to surround and protect the distribution box main body, the first horizontal guide rod and the second horizontal guide rod are in sliding fit with the surrounding seat, so that the distribution box main body with more transverse sizes can be adapted, the flexible configuration of a product is improved, the buffering component is arranged to buffer the elastic force of the second spring, and meanwhile, the impact force is judged according to the horizontal movement condition of the rolling wheel, so that the transportation impact condition can be judged more visually, and the internal electrical equipment is prevented from being damaged during transportation.
Description
Technical Field
The invention belongs to the field of distribution equipment, and particularly relates to a low-voltage distribution protection device.
Background
The requirement on the reliability of power supply is high in the production process of the liquid crystal glass, the power distribution equipment needs to be maintained and maintained under the long-term high-load production condition, the distribution box needs to be moved for professional maintenance, some collisions may occur in the transportation process, and internal electrical equipment may be damaged. Therefore, the invention provides an improvement to the low-voltage distribution protection device.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a low-voltage distribution protection device, which is characterized in that an enclosing protection component is arranged to enclose and protect a distribution box main body, the distribution box main body can adapt to more distribution box main bodies with transverse sizes through the sliding fit of a first horizontal guide rod and a second horizontal guide rod with an enclosing seat, the flexible arrangement and the distribution of products are improved, the buffering component is arranged to buffer the elastic force of a second spring, and meanwhile, the impact force is judged through the horizontal movement condition of a rolling wheel, so that the transportation impact condition can be judged more visually, and the internal electrical equipment is prevented from being damaged in transportation.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a low-voltage power distribution protection device comprises a distribution box main body and an enclosing protection assembly arranged below the distribution box main body, wherein the left side and the right side of the enclosing protection assembly are symmetrically provided with shock absorption assemblies, and the front of the enclosing protection assembly is provided with symmetrically arranged limiting assemblies;
the surrounding protection assembly comprises a first horizontal guide rod, a second horizontal guide rod, symmetrically arranged surrounding seats, wherein the periphery of the first horizontal guide rod is fixedly connected with symmetrically arranged protruding slide rods, the outer side surface of the surrounding seat is provided with a vertical slide groove, the bottom end of the vertical slide groove is provided with a fixed jack, the inner side surface of the surrounding seat is provided with a first horizontal guide hole, the inner side surface of the surrounding seat is positioned in front of the first horizontal guide hole and is provided with a first horizontal guide hole, the second horizontal guide rod is inserted into the first horizontal guide hole and is in sliding fit with the surrounding seats, the first horizontal guide rod is inserted into the second horizontal guide hole and is in sliding fit with the surrounding seats, the front surface of the surrounding seat is provided with a rectangular slide groove communicated with the second horizontal guide hole, the protruding slide rods are in sliding connection with the surrounding seats through the rectangular slide grooves, and the front surface of the surrounding seat is positioned below the rectangular slide grooves and is provided with positioning rotating holes;
the shock absorption assembly comprises a vertical guide rod, a horizontal moving block, a moving shaft, rolling wheels, a fixed rod and a bearing plate, wherein the vertical guide rod is inserted into a fixed jack and fixedly connected with a surrounding seat, a first spring is movably sleeved on the peripheral side of the vertical guide rod, a sliding block which is in sliding fit with a vertical sliding groove is fixedly connected on the inner side of the horizontal moving block, a vertical sliding hole is formed in the top end of the sliding block, the vertical guide rod penetrates through the vertical sliding hole and is in sliding connection with the sliding block, the vertical moving block which is perpendicular to the horizontal moving block is fixedly connected on the outer side of the horizontal moving block, an inclined groove corresponding to the rolling wheels is formed in the bottom end of the vertical moving block, a through moving sliding hole is formed in the peripheral side of the moving shaft, a shaft hole is formed in the end face of the rolling wheels, the moving shaft penetrates through the shaft hole and is in rotating connection with the rolling wheels, the fixed rod penetrates through the moving sliding hole and is in sliding connection with the moving shaft, and connecting rods are fixedly connected to the two ends of the fixed rod, one end of the connecting rod, far away from the fixed rod, is fixedly connected with the outer side wall surface of the surrounding seat, and the bearing plate is fixedly connected with the outer wall of the surrounding seat.
Further, spacing subassembly includes the swinging arms, the fixed axle, spacing round wheel, the inserted bar, a fixed section of thick bamboo, the round hole has been seted up to swinging arms one end, the swinging arms is kept away from round hole one end and has been seted up the waist hole, the fixed axle passes round hole and swinging arms fixed connection, the fixed axle inserts the location rotation hole and rotates with the surrounding seat and be connected, the rotation hole has been seted up to spacing round end face, spacing round week side has seted up spacing hole, the fixed axle passes the rotation and rotates hole and spacing round wheel fixed connection, the protruding dish of all sides fixedly connected with of inserted bar, the movable sleeve of all sides of inserted bar is equipped with the second spring, the clearing hole has been seted up to a fixed section of thick bamboo terminal surface, the inserted bar passes clearing hole and a fixed section of thick bamboo sliding connection, all sides fixedly connected with locating lever of a fixed section of thick bamboo one end is kept away from to the locating lever and surrounds the preceding fixed connection of seat.
Further, the protruding sliding rod is in sliding fit with the swinging rod through the waist hole.
Further, the top end of the first spring is in contact connection with the sliding block, and the bottom end of the first spring is in contact connection with the surrounding seat.
Further, the periphery side of the rolling wheel is in tangential contact with the top surface of the bearing plate.
Further, the sliding block medial surface and block terminal main part lateral surface fixed connection.
Furthermore, the top end of the second spring is in contact connection with the bottom end of the convex disc, and the bottom end of the second spring is in contact connection with the top end of the fixed cylinder.
The invention has the beneficial effects that: this kind of low pressure distribution protection device, through being provided with the enclosure protection subassembly, surround the protection to the block terminal main part, through the sliding fit of first horizontal guide arm and second horizontal direction and enclosure seat, can adapt to the block terminal main part of more transverse dimension, promote the nimble type of equipping of product, through being provided with the bradyseism subassembly, give the buffering at the elasticity of second spring, judge the impact strength degree through the rolling wheel horizontal migration condition simultaneously, can more directly perceivedly judge the transportation and strike the condition, prevent that the transportation from damaging inside electrical equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of a portion of the structure of the present invention;
FIG. 3 is an exploded view of a portion of the structure of the present invention;
fig. 4 is an exploded view of a partial structure of the present invention.
In the figure: 1. a distribution box main body; 2. an enclosure protection assembly; 21. a first horizontal guide bar; 211. a projecting slide bar; 22. a second horizontal guide bar; 23. an enclosure base; 231. a vertical chute; 232. fixing the jack; 233. a first horizontal guide hole; 234. a second horizontal guide hole; 235. a rectangular chute; 236. positioning the rotating hole; 3. a cushioning component; 31. a vertical guide bar; 32. a first spring; 33. a horizontal moving block; 331. a slider; 3311. a vertical sliding hole; 34. a vertical moving block; 341. an inclined groove; 35. a movable shaft; 351. moving the slide hole; 36. a rolling wheel; 361. a shaft hole; 37. fixing the rod; 371. a connecting rod; 38. a support plate; 4. a limiting component; 41. a swing lever; 411. a circular hole; 412. a waist hole; 42. a fixed shaft; 43. a limiting wheel; 431. a self-rotation hole; 432. a limiting hole; 44. inserting a rod; 441. a convex disc; 45. a second spring; 46. a fixed cylinder; 461. through the hole; 47. and (5) positioning the rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
As shown in fig. 1, the low-voltage power distribution protection device comprises a distribution box main body 1 and an enclosing protection component 2 arranged below the distribution box main body 1, wherein the left side and the right side of the enclosing protection component 2 are symmetrically provided with damping components 3, and the front of the enclosing protection component 2 is provided with limiting components 4 symmetrically arranged.
As shown in fig. 2, the surrounding protection assembly 2 includes a first horizontal guiding rod 21, a second horizontal guiding rod 22, and a surrounding seat 23 symmetrically disposed, wherein the periphery of the first horizontal guiding rod 21 is fixedly connected with a protruding sliding rod 211 symmetrically disposed, the outer side surface of the surrounding seat 23 is provided with a vertical sliding slot 231, the bottom end of the vertical sliding slot 231 is provided with a fixed insertion hole 232, the inner side surface of the surrounding seat 23 is provided with a first horizontal guiding hole 233, the inner side surface of the surrounding seat 23 is positioned in front of the first horizontal guiding hole 233 and is provided with a first horizontal guiding hole 233, the second horizontal guiding rod 22 is inserted into the first horizontal guiding hole 233 and is in sliding fit with the surrounding seat 23, the first horizontal guiding rod 21 is inserted into the second horizontal guiding hole 234 and is in sliding fit with the surrounding seat 23, the front surface of the surrounding seat 23 is provided with a rectangular sliding slot 235 communicated with the second horizontal guiding hole 234, the protruding, a positioning rotating hole 236 is formed in the front of the surrounding seat 23 below the rectangular sliding groove 235, and the protruding sliding rod 211 is in sliding fit with the swinging rod 41 through the waist hole 412.
As shown in fig. 3, the shock absorbing assembly 3 includes a vertical guide rod 31, a horizontal moving block 33, a moving shaft 35, a rolling wheel 36, a fixing rod 37, and a supporting plate 38, wherein the vertical guide rod 31 is inserted into the fixing insertion hole 232 and fixedly connected with the surrounding seat 23, a first spring 32 is movably sleeved around the vertical guide rod 31, a sliding block 331 in sliding fit with the vertical sliding slot 231 is fixedly connected inside the horizontal moving block 33, a vertical sliding hole 3311 is formed at the top end of the sliding block 331, the vertical guide rod 31 passes through the vertical sliding hole 3311 and is slidably connected with the sliding block 331, a vertical moving block 34 perpendicular to the horizontal moving block 33 is fixedly connected outside the horizontal moving block 33, an inclined groove 341 corresponding to the rolling wheel 36 is formed at the bottom end of the vertical moving block 34, a moving sliding hole 351 is formed at the periphery of the moving shaft 35, a shaft hole 361 is formed on the end surface of the rolling wheel 36, the moving shaft 35 passes through the shaft hole 361 and is rotatably connected with the rolling wheel 36, the fixed rod 37 passes through the movable sliding hole 351 and is connected with the movable shaft 35 in a sliding mode, two ends of the fixed rod 37 are fixedly connected with a connecting rod 371, one end of the connecting rod 371, away from the fixed rod 37, is fixedly connected with the outer side wall surface of the surrounding seat 23, the supporting plate 38 is fixedly connected with the outer wall of the surrounding seat 23, the outer peripheral side of the rolling wheel 36 is in tangential contact with the top surface of the supporting plate 38, the inner side surface of the sliding block 331 is fixedly connected with the outer side surface of the distribution box main body 1, and the inner side surface of the sliding block 331 is fixedly connected with the outer side surface of the distribution box main body 1.
As shown in fig. 4, the position-limiting assembly 4 includes a swing rod 41, a fixed shaft 42, a position-limiting wheel 43, an insertion rod 44, and a fixed barrel 46, wherein one end of the swing rod 41 is provided with a circular hole 411, one end of the swing rod 41 away from the circular hole 411 is provided with a waist hole 412, the fixed shaft 42 passes through the circular hole 411 and is fixedly connected with the swing rod 41, the fixed shaft 42 is inserted into the positioning rotary hole 236 and is rotatably connected with the surrounding seat 23, an end surface of the position-limiting wheel 43 is provided with a self-rotation rotary hole 431, a position-limiting hole 432 is formed on the circumferential side of the position-limiting wheel 43, the fixed shaft 42 passes through the self-rotation rotary hole 431 and is fixedly connected with the position-limiting wheel 43, the circumferential side of the insertion rod 44 is fixedly connected with a convex disc 441, the circumferential side of the insertion rod 44 is movably sleeved with a second spring 45, an end surface of the fixed barrel 46 is provided with a through hole 461, the insertion rod 44 passes through the through hole 461 and is slidably connected with the fixed barrel 46, the circumferential side of the fixed barrel 46 is fixedly connected with a positioning rod 47, the top end of the second spring 45 is in contact connection with the bottom end of the convex disc 441, and the bottom end of the second spring 45 is in contact connection with the top end of the fixed cylinder 46.
In the invention, the inserted link 44 is moved downwards to make the inserted link 44 leave the limiting hole 432, the limiting wheel 43 is rotated, the limiting wheel 43 drives the swinging rod 41 to rotate around the round hole 411 through the fixed shaft 42, the waist hole 412 drives the convex sliding rod 211 to move horizontally to a proper position through sliding fit with the convex sliding rod 211, the inserted link 44 is released, the inserted link 44 moves upwards under the elastic force of the second spring 45 and is inserted into the limiting hole 432 to form a limiting effect, the distribution box main body 1 is placed in an opening formed by the surrounding seat 23, the sliding block 331 is fixedly connected with the distribution box main body 1, the sliding block 331 drives the horizontal moving block 33 and the vertical moving block 34 to move downwards under the action of gravity, the inclined groove 341 and the rolling wheel 36 roll friction drive the rolling wheel 36 to move transversely and rotate, the rolling wheel 36 drives the moving shaft 35 to move transversely, and the transportation vibration condition can be known more easily by observing the transverse movement, conveniently adjust transportation rhythm, place and damage distribution equipment.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (7)
1. The low-voltage distribution protection device is characterized by comprising a distribution box main body (1) and an enclosing protection component (2) arranged below the distribution box main body (1), wherein the left side and the right side of the enclosing protection component (2) are symmetrically provided with shock absorption components (3), and the front part of the enclosing protection component (2) is provided with symmetrically arranged limiting components (4);
the surrounding protection component (2) comprises a first horizontal guide rod (21), a second horizontal guide rod (22) and a surrounding seat (23) which are symmetrically arranged, the periphery of the first horizontal guide rod (21) is fixedly connected with a protruding sliding rod (211) which is symmetrically arranged, the outer side surface of the surrounding seat (23) is provided with a vertical sliding chute (231), the bottom end of the vertical sliding chute (231) is provided with a fixed insertion hole (232), the inner side surface of the surrounding seat (23) is provided with a first horizontal guide hole (233), the inner side surface of the surrounding seat (23) is positioned in front of the first horizontal guide hole (233) and provided with a first horizontal guide hole (233), the second horizontal guide rod (22) is inserted into the first horizontal guide hole (233) to be in sliding fit with the surrounding seat (23), the first horizontal guide rod (21) is inserted into the second horizontal guide hole (234) to be in sliding fit with the surrounding seat (23), the front of the surrounding seat (23) is provided with a rectangular sliding chute (235) which is communicated with the second horizontal guide hole (234), the protruding sliding rod (211) is connected with the surrounding seat (23) in a sliding mode through a rectangular sliding groove (235), and a positioning rotating hole (236) is formed in the front of the surrounding seat (23) and located below the rectangular sliding groove (235);
the shock absorption assembly (3) comprises a vertical guide rod (31), a horizontal moving block (33), a moving shaft (35), rolling wheels (36), a fixed rod (37) and a supporting plate (38), wherein the vertical guide rod (31) is inserted into a fixed jack (232) and fixedly connected with a surrounding seat (23), a first spring (32) is movably sleeved on the periphery of the vertical guide rod (31), a sliding block (331) in sliding fit with a vertical sliding groove (231) is fixedly connected to the inner side of the horizontal moving block (33), a vertical sliding hole (3311) is formed in the top end of the sliding block (331), the vertical guide rod (31) penetrates through the vertical sliding hole (3311) and is in sliding connection with the sliding block (331), a vertical moving block (34) perpendicular to the horizontal moving block (33) is fixedly connected to the outer side of the horizontal moving block (33), and an inclined groove (341) corresponding to the rolling wheels (36) is formed in the bottom end of the vertical moving block (34), remove axle (35) week side and seted up through-going removal draw runner (351), shaft hole (361) have been seted up to rolling wheel (36) terminal surface, removal axle (35) pass shaft hole (361) and roll wheel (36) and rotate and be connected, dead lever (37) pass and remove draw runner (351) and remove axle (35) sliding connection, dead lever (37) both ends fixedly connected with connecting rod (371), dead lever (37) one end is kept away from in connecting rod (371) and surrounds seat (23) outside wall fixed connection, bearing board (38) and surround seat (23) outer wall fixed connection.
2. The low-voltage distribution protection device according to claim 1, wherein the limiting component (4) comprises a swinging rod (41), a fixed shaft (42), a limiting wheel (43), an inserting rod (44) and a fixed cylinder (46), one end of the swinging rod (41) is provided with a round hole (411), one end of the swinging rod (41) far away from the round hole (411) is provided with a waist hole (412), the fixed shaft (42) passes through the round hole (411) and is fixedly connected with the swinging rod (41), the fixed shaft (42) is inserted into the positioning rotating hole (236) and is rotatably connected with the surrounding seat (23), the end surface of the limiting wheel (43) is provided with a self-rotation rotating hole (431), the periphery of the limiting wheel (43) is provided with a limiting hole (432), the fixed shaft (42) passes through the self-rotation rotating hole (431) and is fixedly connected with the limiting wheel (43), the periphery of the inserting rod (44) is fixedly connected with a convex disc (441), and the inserting rod (44) is movably sleeved with a second spring (45), the end face of the fixed cylinder (46) is provided with a through hole (461), the inserted bar (44) penetrates through the through hole (461) to be in sliding connection with the fixed cylinder (46), the periphery of the fixed cylinder (46) is fixedly connected with a positioning rod (47), and one end, far away from the fixed cylinder (46), of the positioning rod (47) is fixedly connected with the front face of the surrounding seat (23).
3. A low voltage distribution protection device according to claim 1, wherein said projecting sliding rod (211) is slidingly engaged with the oscillating rod (41) through a waist hole (412).
4. A low-voltage distribution protection device according to claim 1, characterized in that the top end of said first spring (32) is in contact with said sliding block (331) and the bottom end of said first spring (32) is in contact with said surrounding seat (23).
5. A low voltage power distribution protection device according to claim 1, wherein the peripheral side of the roller wheel (36) is in tangential contact with the top surface of the support plate (38).
6. A low-voltage distribution protection device according to claim 1, characterized in that said inner side of said sliding block (331) is fixedly connected to the outer side of said distribution box body (1).
7. The low-voltage distribution protection device according to claim 2, wherein the top end of the second spring (45) is in contact connection with the bottom end of the convex disc (441), and the bottom end of the second spring (45) is in contact connection with the top end of the fixed cylinder (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661882.6A CN113300249B (en) | 2021-06-15 | 2021-06-15 | Low-voltage distribution protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661882.6A CN113300249B (en) | 2021-06-15 | 2021-06-15 | Low-voltage distribution protection device |
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| CN113300249A true CN113300249A (en) | 2021-08-24 |
| CN113300249B CN113300249B (en) | 2022-08-02 |
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| CN202110661882.6A Active CN113300249B (en) | 2021-06-15 | 2021-06-15 | Low-voltage distribution protection device |
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| CN212079576U (en) * | 2020-04-16 | 2020-12-04 | 浙江华意科技有限公司 | High-pressure-resistant variable-frequency compressor cylinder seat with integrated framework for refrigerator |
| CN112108634A (en) * | 2020-09-21 | 2020-12-22 | 泉州苗亿自动化机械有限公司 | Mechanical casting separator and use method |
| CN212299216U (en) * | 2020-06-22 | 2021-01-05 | 陈定宁 | Adjustable base of air conditioner outdoor unit |
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| CN112271618A (en) * | 2020-11-17 | 2021-01-26 | 浙江柜一电力设备有限公司 | Indoor high-low voltage distribution box of power distribution station |
| CN112952631A (en) * | 2021-03-25 | 2021-06-11 | 彩虹（合肥）液晶玻璃有限公司 | Developments transformer case |
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| FR2925235A1 (en) * | 2007-12-13 | 2009-06-19 | Oliveira Jose De | Multi-format vibration isolation base for supporting electrical cabinet i.e. radio rack, of mobile telephone, has locking components cooperated with adjusting units for adjusting position of fixation devices along sections |
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| CN112952631A (en) * | 2021-03-25 | 2021-06-11 | 彩虹（合肥）液晶玻璃有限公司 | Developments transformer case |
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| Publication number | Publication date |
|---|---|
| CN113300249B (en) | 2022-08-02 |
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