CN113241652B - Variable-adjustment centrally installed switchgear transfer trolley - Google Patents
Variable-adjustment centrally installed switchgear transfer trolley Download PDFInfo
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- CN113241652B CN113241652B CN202110680752.7A CN202110680752A CN113241652B CN 113241652 B CN113241652 B CN 113241652B CN 202110680752 A CN202110680752 A CN 202110680752A CN 113241652 B CN113241652 B CN 113241652B
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- transfer trolley
- platform
- centrally installed
- locking plate
- rod
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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
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Trip Switchboards (AREA)
- Handcart (AREA)
Abstract
The variably-adjustable centrally-mounted cabinet transfer trolley provided by the invention realizes the adjustment of any height of the transfer trolley by matching the telescopic rod with the elastic lock structure, wherein the telescopic rod is adjustable in height. In addition, the width of the transfer trolley is adjusted by the movement of the roller and the moving platform in the guide groove. Through the quick adjustment of height and width, be convenient for shift out the cubical switchboard with trouble circuit breaker and overhaul and move into the cubical switchboard with normal circuit breaker rapidly to the power supply line normal operating avoids having a power failure for a long time because of the circuit breaker trouble causes the power supply line, brings the loss for production.
Description
Technical Field
The invention relates to a centrally installed switchgear transfer trolley, in particular to a variably adjustable centrally installed switchgear transfer trolley.
Background
The centrally installed switchgear is armored type centrally installed metal-enclosed switchgear and is divided into three layers, wherein the upper layer is a bus and an instrument room, the middle layer is a breaker room, and the lower layer is a cable room. The transfer trolley is used as an important accessory of the centrally installed switchgear, and is mainly used for safely moving out a breaker handcart from the interior of the centrally installed switchgear and conveying the breaker handcart to other positions when the centrally installed switchgear is installed, debugged and maintained, and the transfer trolley needs to be moved into the centrally installed switchgear after the centrally installed switchgear is installed, debugged and maintained.
The conventional transfer trolley commonly used at present mainly has the following defects that firstly, the structural design is unreasonable, the height adjustment is inconvenient in the height butt joint process of the switch cabinet, the nylon hand wheels on four bearing bolts are respectively adjusted to realize the purpose, and the adjustment speed is slow. Secondly, the transfer trolley has various specifications of height and width, poor universality and poor operation performance. The circuit breakers are generally in two specifications of 800mm and 1000mm, the heights of circuit breaker installation guide rails in the switch cabinet are different and are generally about 480mm and 800mm, so that transfer vehicles with different heights and widths are required to be arranged, the transfer vehicles with various specifications not only occupy field sites, but also have high cost, two transfer vehicles with various specifications are required to be arranged in each specification in the power distribution room, the fault circuit breakers can be conveniently moved out of the switch cabinet for maintenance, and the normal circuit breakers can be rapidly moved into the switch cabinet, so that the normal operation of a power supply line is realized, and the long-time power failure of the power supply line caused by the fault of the circuit breakers is avoided, and the production loss is brought.
Disclosure of Invention
The invention aims to provide a variable-type adjustable centrally installed switchgear transfer trolley to solve the technical problem that the size of the traditional transfer trolley is not convenient to adjust.
The invention provides a variable-type adjustable centrally installed switchgear transfer trolley which is characterized by comprising
The transfer trolley main body structure comprises a bottom fixed seat, a supporting rod and a guide rail platform arranged at the top of the supporting rod;
the height adjusting mechanism comprises a spring lock structure arranged inside the supporting rod and a fine adjusting rod arranged on the outer ring of the supporting rod;
the elastic locking structure comprises a locking plate, a first spring, a baffle and a reset structure, wherein the side wall of the supporting rod is provided with an opening for popping the locking plate, the baffle is obliquely arranged towards the opening, one end of the first spring is connected with the locking plate, the other end of the first spring is connected with the inner side wall of the supporting rod opposite to the opening, the reset structure comprises a sliding frame and a reset plate which are arranged on the outer side wall above the opening, and the reset plate is connected with the sliding frame through a second spring; the locking plate is provided with a clamping groove;
in a non-use state, the reset structure limits the lock plate in the support rod; when the locking plate is lifted, the reset structure is slid upwards, the locking groove is aligned with the top of the fine adjustment rod after the locking plate is popped up under the action of the first spring, and the support rod falls to the locking plate and the fine adjustment rod to be interlocked, so that the upward adjustment operation is completed; when the locking plate descends, the supporting rod is lifted upwards, the resetting structure automatically slides downwards after the locking plate leaves the fine adjustment rod, the locking plate resets, and the supporting rod descends to complete downward adjustment operation.
In detail, under non-user state, because the limiting action of reset structure, the locking plate is located the bracing piece, consequently, can not restrict the bracing piece in the intraductal free slip of fine setting, this moment, first spring is in the extension state, the locking plate receives the pulling force of first spring, and when the platform was gone up to needs, the bracing piece that rises surpassed the fine setting pole to the bottommost of locking plate, the reset structure that upwards slides, the locking plate pops out the fine setting pole, because the positioning action of baffle, behind locking plate rotary motion to the baffle, the draw-in groove is aimed at with the fine setting pole top, only needs the bracing piece that slightly descends, falls into the draw-in groove fine setting pole, can realize the interlocking, accomplishes the operation of transferring to the higher authority. In the use, if the mistake touches reset structure, the locking plate pops out the bracing piece, because the restriction of fine setting pole, when the locking plate bottommost does not surpass the fine setting pole, the locking plate can be in the fine setting pole, can not influence the slip of bracing piece.
Further, when the platform needs to be lowered, the supporting rod only needs to be lifted upwards, the clamping groove of the locking plate leaves the top end of the fine adjustment rod, the reset structure automatically slides downwards, the locking plate is accommodated in the supporting rod, the locking plate resets, and the supporting rod descends.
Further, the reset plate is provided with a protrusion for sliding the reset plate.
In detail, the carriage is used to connect the reset plate and the support bar. When the reset plate slides upwards, the second spring is compressed, the elastic potential energy is increased, the locking plate loses the limit of the reset plate, and the support rod is popped out; when the locking plate needs to be reset, the clamping groove is made to leave the fine adjustment pipe, the elastic potential energy of the second spring is released, and the locking plate resets and reenters the supporting rod.
Further, the fine adjustment rod is a telescopic rod with adjustable height.
In detail, in the use, in order to adapt to the user demand of co-altitude not, set up the fine-tuning pole into height-adjustable's telescopic link, adjust the telescopic link to required height, can pass through the cooperation of latch mechanism and telescopic link is used, realizes the regulation of arbitrary height.
Furthermore, the transfer trolley for the centrally installed switchgear, provided by the invention, also comprises
A width adjustment mechanism;
the device comprises a guide rail platform, a movable platform, a fixed platform and a mortise lock structure arranged on the movable platform;
the mortise lock structure comprises a bolt and a jack, the bolt is arranged on the moving platform, the jack is arranged on the guide rail platform, the moving platform slides during width adjustment, and the bolt and the jack are interlocked to complete width adjustment.
In detail, when the movable platform is slid to the jack arranged on the guide rail platform, a plug is inserted into the jack, and then the width can be adjusted.
Further, the mobile platform comprises a left mobile platform and a right mobile platform which are respectively arranged on the left side and the right side of the fixed platform.
Further, the guide rail platform is provided with a guide groove, and a roller is arranged between the guide groove and the moving platform.
In detail, in order to make the moving platform move rapidly, a roller is arranged between the guide groove and the moving platform, and the moving platform and the guide groove move relatively through the roller.
Furthermore, the bolt is provided with a positioning bulge, and the positioning bulge is used for interlocking with the centrally installed switchgear;
at least two jacks are arranged.
In detail, the mobile platform is more stable, the bolt is provided with a positioning bulge, and after the bolt and the jack are interlocked, the bolt is rotated to ensure that the positioning bulge is fixedly connected with a fixing hole of the middle-placed cabinet, so that multidirectional locking is realized.
Furthermore, a supporting block is arranged between the guide rail platform and the fixed platform, and a lock catch is arranged on the fixed platform and used for interlocking with the middle-placed cabinet.
In more detail, before the transfer trolley moves to the centrally installed switchgear, the lock catch on the fixing platform is inserted into the upper lock hole of the centrally installed switchgear, so that the transfer trolley and the centrally installed switchgear are fixed in an interlocking manner, and the transfer trolley is prevented from sliding in the using process.
Furthermore, the bottom fixing seat comprises a bracket body and a pulley arranged at the bottom of the bracket body.
Further, the invention provides a convenient and fast variably-adjustable centrally installed switchgear transfer trolley, which comprises a variably-adjustable centrally installed switchgear transfer trolley and a pull rod;
the pull rod comprises a handle and convex sleeves arranged at two ends of the handle, and is used for synchronously sliding the reset plate.
In order to more conveniently use the centrally installed switchgear transfer trolley, when the locking plate is needed to be used for positioning, the protrusions at the two ends of the pull rod are sleeved with the protrusions on the positioning plate, the locking plate is synchronously slid, and the pull rod can be pulled out after the groove and the top end of the fine adjustment rod are interlocked.
The variable-adjustment centrally-mounted cabinet transfer trolley provided by the invention realizes the adjustment of any height of the transfer trolley by matching the height-adjustable telescopic rod with the elastic lock structure. In addition, the width of the transfer trolley is adjusted by the movement of the roller and the moving platform in the guide groove. Through the quick adjustment of height and width, be convenient for shift out the cubical switchboard with trouble circuit breaker and overhaul and move into the cubical switchboard with normal circuit breaker rapidly to the power supply line normal operating avoids causing the power supply line to have a power failure for a long time because of the circuit breaker trouble, brings the loss for production.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a sectional view of a transfer trolley of a variable adjustable centrally installed switchgear of the present application;
FIG. 2 is a schematic view of the detail A in FIG. 1;
FIG. 3 is a schematic view of a reset configuration;
fig. 4 is a schematic view of the structure of the pull rod.
1-a pulley; 2-a stent body; 3-supporting rods; 4-a guide rail platform; 5-a jack; 6-a bolt; 7-positioning the projection; 8-a roller; 9-right mobile platform; 10-a stationary platform; 11-locking; 12-left mobile platform; 13-a guide groove; 14-a spacer; 15-a first spring; 16-a carriage; 17-a second spring; 18-a reset plate; 19-a bump; 20-fine tuning rod; 21-locking plate; 22-a card slot; 23-a handle; 24-raised sleeves.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that the terms "horizontal", "vertical", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "disposed," "mounted," and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The variable-type adjustable centrally installed switchgear transfer trolley according to the embodiment of the present application will be specifically described below.
As shown in fig. 1-4, the variable-type adjustable centrally installed switchgear transfer trolley of the embodiment comprises:
the transfer trolley main body structure comprises a bottom fixed seat, a support rod 3 and a guide rail platform 4 arranged on the top of the support rod 3; the bottom fixing seat comprises a support body 2 and a pulley 1 arranged at the bottom of the support body 2.
Further, the height adjusting mechanism comprises a spring lock structure arranged inside the support rod 3 and a fine adjustment rod 20 arranged on the outer ring of the support rod 3; the fine adjustment rod 20 is a telescopic rod with adjustable height. The elastic locking structure comprises a locking plate 21, a first spring 15, a baffle and a reset structure, wherein an opening is formed in the side wall of the support rod 3 and used for popping up the locking plate 21, the baffle is obliquely arranged towards the opening, the reset structure comprises a sliding frame 16 and a reset plate 18, the sliding frame 16 is arranged on a support plate, and the reset plate 18 is connected with the sliding frame 16 through a second spring 17; the locking plate 21 is provided with a clamping groove 22; the reset plate 18 is provided with a projection 19 for sliding the reset plate 18.
Further, the width adjusting mechanism comprises a guide rail platform 4, a movable platform and a fixed platform 10, and a mortise lock structure arranged on the movable platform; the mortise lock structure comprises a bolt 6 arranged on the movable platform and a jack 5 arranged on the guide rail platform 4, and the movable platform comprises a left movable platform 12 and a right movable platform 9.
Furthermore, the guide rail platform 4 is provided with a guide groove 13, a roller 8 is arranged between the guide groove 13 and the moving platform, the bolt 6 is provided with a positioning bulge 7, and the positioning bulge 7 is used for interlocking with the middle cabinet; at least two jacks 5 are arranged.
Furthermore, a supporting block 14 is arranged between the guide rail platform 4 and the fixed platform 10, and a lock catch 11 is arranged on the fixed platform 10 and used for interlocking with the centrally installed switchgear.
Furthermore, the embodiment also comprises a convenient and quick variably-adjustable centrally installed switchgear transfer trolley, which comprises a variably-adjustable centrally installed switchgear transfer trolley and a pull rod;
the pull rod comprises a handle 23 and convex sleeves 24 arranged at two ends of the handle 23 and used for synchronously sliding the reset plate 18.
In a non-use state, the reset structure limits the locking plate 21 in the supporting rod 3; when the height of the supporting rod is increased, the fine adjustment rod 20 is adjusted to a required height, the supporting rod 3 is lifted upwards, after the bottommost end of the locking plate 21 is higher than the fine adjustment rod 20, the lifting rod is used for sleeving the protrusion sleeve 24 into the protrusion 19, meanwhile, the reset structure is slid upwards, the locking plate 21 is popped up under the action of the first spring 15, the clamping groove 22 is aligned with the top of the fine adjustment rod 20, the supporting rod 3 is lowered, and the supporting rod 3 falls to interlock the locking plate 21 and the fine adjustment rod 20 to complete the upward adjustment operation; when the support rod is descended, the support rod 3 is lifted upwards, the locking plate 21 is separated from the fine adjustment rod 20, the reset structure automatically slides downwards under the action of the second spring 17, the locking plate 21 is retracted into the support rod 3, the locking plate 21 is reset, the support rod 3 descends, and downward adjustment operation is completed.
During width adjustment, adjust left moving platform 12 and right moving platform 9 move bolt 6 to jack 5 department, insert bolt 6 jack 5, realize bolt 6 with the interlocking of jack 5 accomplishes width adjustment.
After the height and the width are adjusted, the lock catch 11 and a lock hole of the middle-placed cabinet are arranged, the bolt 6 is rotated at the same time, and the positioning protrusion 7 and a fixing hole of the middle-placed cabinet are connected and fixed to lock in multiple directions.
The embodiment uses through the cooperation of telescopic fine-tuning pole 20 and bullet lock structure, puts the regulation of cabinet transfer car (buggy) height in the realization, simultaneously, uses through the cooperation of moving platform and bolt 6, has realized putting the width modulation of cabinet transfer car (buggy) in, makes the use of transfer car (buggy) more convenient, more general. In addition, the transfer trolley is fixed with the centrally installed switchgear in an interlocking manner in multiple directions, the sliding of the transfer trolley in the use process is avoided, and the stability is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A variable-type adjustable centrally installed switchgear transfer trolley is characterized by comprising
The transfer trolley main body structure comprises a bottom fixed seat, a supporting rod and a guide rail platform arranged at the top of the supporting rod;
the height adjusting mechanism comprises a spring lock structure arranged inside the supporting rod and a fine adjusting rod arranged on the outer ring of the supporting rod;
the elastic locking structure comprises a locking plate, a first spring, a baffle and a reset structure, wherein the side wall of the supporting rod is provided with an opening for ejecting the locking plate, the baffle is obliquely arranged towards the opening, one end of the first spring is connected with the locking plate, the other end of the first spring is connected with the inner side wall of the supporting rod opposite to the opening, the reset structure comprises a sliding frame and a reset plate which are arranged on the outer side wall above the opening, and the reset plate is connected with the sliding frame through a second spring; the locking plate is provided with a clamping groove;
in a non-use state, the reset structure limits the lock plate in the support rod; when the locking plate is lifted, the reset structure is upwards slid, the locking groove is aligned with the top of the fine adjustment rod after the locking plate is popped up under the action of the first spring, the support rod falls to the interlocking of the locking plate and the fine adjustment rod, and the upward adjustment operation is completed; when the locking plate descends, the supporting rod is lifted upwards, the resetting structure automatically slides downwards after the locking plate leaves the fine adjustment rod, the locking plate resets, and the supporting rod descends to complete downward adjustment operation.
2. The centrally installed switchgear trolley as claimed in claim 1, wherein the reset plate is provided with a protrusion for sliding the reset plate.
3. The centrally installed switchgear transfer trolley according to claim 1, wherein the fine adjustment lever is a telescopic lever with adjustable height.
4. The centrally installed switchgear transfer trolley according to claim 1, further comprising
A width adjustment mechanism;
the device comprises a guide rail platform, a movable platform, a fixed platform and a mortise lock structure arranged on the movable platform;
the mortise lock structure comprises a bolt and a jack, the bolt is arranged on the moving platform, the jack is arranged on the guide rail platform, the moving platform slides during width adjustment, and the bolt and the jack are interlocked to complete width adjustment.
5. The centrally installed switchgear transfer trolley according to claim 4, wherein the moving platform comprises a left moving platform and a right moving platform, which are respectively disposed on the left and right sides of the fixed platform;
the guide rail platform is provided with a guide groove, and a roller is arranged between the guide groove and the moving platform.
6. The centrally installed switchgear transfer trolley according to claim 5, wherein the latch is provided with a positioning protrusion for interlocking with a centrally installed switchgear;
at least two jacks are arranged.
7. The centrally installed switchgear transfer trolley according to claim 6, wherein a support block is provided between the rail platform and the fixed platform, and the fixed platform is provided with a lock catch for interlocking with the centrally installed switchgear.
8. The centrally installed switchgear transfer trolley according to claim 1, wherein the bottom fixing base comprises a bracket body, and pulleys provided at the bottom of the bracket body.
9. A convenient and variable type adjustable centrally installed cabinet transfer trolley, which is characterized by comprising a variably adjustable centrally installed cabinet transfer trolley as claimed in any one of claims 1 to 8, and a pull rod;
the pull rod comprises a handle and convex sleeves arranged at two ends of the handle, and is used for synchronously sliding the reset plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110680752.7A CN113241652B (en) | 2021-06-18 | 2021-06-18 | Variable-adjustment centrally installed switchgear transfer trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110680752.7A CN113241652B (en) | 2021-06-18 | 2021-06-18 | Variable-adjustment centrally installed switchgear transfer trolley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113241652A CN113241652A (en) | 2021-08-10 |
| CN113241652B true CN113241652B (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110680752.7A Active CN113241652B (en) | 2021-06-18 | 2021-06-18 | Variable-adjustment centrally installed switchgear transfer trolley |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746308A (en) * | 2014-01-27 | 2014-04-23 | 浙江时通电气制造有限公司 | Vacuum circuit breaker transfer vehicle with adjustable width and height |
| CN104577833A (en) * | 2014-12-22 | 2015-04-29 | 无锡力豪科技有限公司 | Circuit-breaker assembling trolley for switch cabinet |
| JP2015109788A (en) * | 2013-10-24 | 2015-06-11 | 株式会社不二電業社 | Wheeled platform for carrying electrical equipment |
| CN205377155U (en) * | 2016-01-12 | 2016-07-06 | 襄阳金顿电气有限公司 | In put multi -functional transportation dolly of cabinet |
| CN108045415A (en) * | 2018-01-02 | 2018-05-18 | 国网福建省电力有限公司 | A kind of breaker of switch cabinet handcart for transporting |
| CN210517565U (en) * | 2019-10-29 | 2020-05-12 | 湖北鄂电大全电气设备制造有限公司 | Adjustable transfer handcart |
-
2021
- 2021-06-18 CN CN202110680752.7A patent/CN113241652B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015109788A (en) * | 2013-10-24 | 2015-06-11 | 株式会社不二電業社 | Wheeled platform for carrying electrical equipment |
| CN103746308A (en) * | 2014-01-27 | 2014-04-23 | 浙江时通电气制造有限公司 | Vacuum circuit breaker transfer vehicle with adjustable width and height |
| CN104577833A (en) * | 2014-12-22 | 2015-04-29 | 无锡力豪科技有限公司 | Circuit-breaker assembling trolley for switch cabinet |
| CN205377155U (en) * | 2016-01-12 | 2016-07-06 | 襄阳金顿电气有限公司 | In put multi -functional transportation dolly of cabinet |
| CN108045415A (en) * | 2018-01-02 | 2018-05-18 | 国网福建省电力有限公司 | A kind of breaker of switch cabinet handcart for transporting |
| CN210517565U (en) * | 2019-10-29 | 2020-05-12 | 湖北鄂电大全电气设备制造有限公司 | Adjustable transfer handcart |
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| Publication number | Publication date |
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| CN113241652A (en) | 2021-08-10 |
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