CN202172553U - High-strength quake-proof cabinet - Google Patents
High-strength quake-proof cabinet Download PDFInfo
- Publication number
- CN202172553U CN202172553U CN2011203084886U CN201120308488U CN202172553U CN 202172553 U CN202172553 U CN 202172553U CN 2011203084886 U CN2011203084886 U CN 2011203084886U CN 201120308488 U CN201120308488 U CN 201120308488U CN 202172553 U CN202172553 U CN 202172553U
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Abstract
The utility model discloses a high-strength quake-proof cabinet, which relates to the storing field of electric equipment. The high-strength quake-proof cabinet comprises a cuboid frame body, a top plate and a base, wherein the cuboid frame body is used for accommodating the equipment; the top plate and the base are respectively arranged the upper end and the lower end of the frame body; the frame body consists of two opposite side frames and a beam used for connecting the two side frames; each of the side frames comprises two parallel columns and a reinforced column, wherein the reinforced column is arranged between the two parallel columns, the parallel columns are fixed with the reinforced column by a rectangular side beam; and the beam is connected with the columns arranged at one side of each of the two side frames and the middle reinforced column. The cabinet designed by the scheme can ensure that only 0.5-degree deformation of the cabinet is caused when in an earthquake, the cabinet can protect internal equipment well, and the whole frame eliminates other auxiliary reinforced structures, so that the installation of the cabinet and the disassembly/assembly of the internal equipment are convenient, the utilization rate of the inner space of the cabinet is improved, and the natural frequency of the whole frame in the scheme in three directions can be over 21Hz after experiment.
Description
Technical field
The utility model relates to electronic equipment and deposits the field, is specifically related to a kind of electronic equipment with antidetonation, bending resistance, anti-twisting property cabinet is installed.
Background technology
The column of existing antidetonation rack adopts the light sheet bending moulding more on the market; Perhaps utilize aluminium section bar to be fitted together with welding of base and top cover or spiral shell respectively again as framework; Realize shock resistance being aided with other reinforcement then; Reinforcement generally is on the cabinet wall on rack top, corresponding section bar to be set, or the mode with the diagonal angle adopts firmwares such as X type lacing wire that rack is carried out the shock resistance that consolidation process improves rack on rack cabinet wall.Though aforesaid way has improved the certain shock resistance of rack, the frame stiffness and the intensity of this type rack are lower, make that the rack natural frequency is relatively low; Cause avoiding the amplification region of floor response spectrum, cause the acceleration of enclosure top structure, deformation response bigger, bigger to the damage of rack internal components; If cabinet framework adopts the mode of spiral shell dress in addition, bolt is slight loosening during earthquake, all causes the rigidity of structure, intensity to reduce; Make the ability of the anti-aftershock of rack descend greatly, rack can take the usage space in the rack after increasing reinforcement, and is difficult for dismounting rack internal unit; Even influence other equipment installations, especially the enclosure top space generally is used to design the cabling crane span structure of power plant, and is fixing if enclosure top is strengthened; Interfere together with crane span structure, be unfavorable for construction.
The utility model content
For the structural seismic capacity that overcomes rack in the prior art does not reach the lower problem of rigidity and intensity by force, the utility model provides a kind of not to be needed reinforced structure for installation can reach shockproof requirements and satisfies rigidity and the cabinet design structure of strength criterion.Concrete scheme is following: a kind of high-strength anti-seismic rack; The framework that comprises the rectangular shape of housing apparatus; Be installed in the top board and the base of framework top and bottom respectively; It is characterized in that said framework is made up of two relative body side frames and the crossbeam that connects two body side frames, said body side frame comprises two columns being arranged in parallel and the reinforcement column between the column; Column and strengthen between the column and fix through rectangular side crossbeam, said crossbeam are connected on the column and middle reinforcement column of two body side frame one sides.
For improving the anti-twist property of base; The radial section shape of said base shape and framework is identical and be made up of the angle steel that interfixes; Comprise a fixed frame and a vertical carriage that keeps off in the framework bottom of fitting with the framework outer side edges; Be fixed with the metal caul that respectively be connected two angle steel towards the angle steel of framework one side with the angle steel junction at carriage, the supporting bracket center fixed has anti-twist fixedly angle steel.
For improving the bending resistance of column; Said column is the dimorphism cavity configuration that forms of single surface plate bending fold or is welded to each other the dimorphism cavity configuration that forms by two twisted plates that said dimorphism chamber is two sealing chambers in the rectangle frame.
For improving the adaptive capacity of crossbeam; Said crossbeam comprises the middle beam that connects two body side frame upper pillar stands and reinforcement column centre position; And connect two body side frame columns and strengthen the end crossbeam on column top; It is the channel-section steel of U-shaped that said middle beam and end crossbeam adopt the cross section, and the channel-section steel bottom of said middle beam has tactic air-vent.
For strengthening the anti-stress of top board; Said top board is for identical with framework radial section shape and be fixedly connected the hollow frame constitute by the rectangle steel plate, around the said top board outer side edges be provided with vertical and with the fixed edge of hollow frame one, the inboard of fixed edge and the applying of the outer side edges of framework.
For improving the whole shock resistance of rack; All be fixed together between said framework and base, the top board and between each parts of framework, base and top board itself through welding manner.
Be the shock resistance between reinforced company's relay part; Each fixed point of said framework and base and top board all is fixed with the leg-of-mutton metal backing that is used to improve fixing point stress bearing strength, and liner plate is separately fixed on two parts that fixed point interfixes.
For making things convenient for the rack operation; Two body side frames wherein do not have the middle beam connection and the cabinet door of formation rack in the centre position of a side, are connected with the door beam of end crossbeam formation cabinet door in the upper end of two body side frames of this side.
For further improving the shock resistance of framework; Two one group of side crossbeam employing on the said body side frame and mode arranged side by side are fixed on column and strengthen between the column.
For keeping the cleaning in the rack; The side external surface of said rack is equipped with the illiteracy plate, covers plate and is fixed by welding on the framework.
The rack distortion of 0.5 degree of only the having an appointment when rack of this programme design can guarantee earthquake; Can well protect internal unit; Whole framework has saved other auxiliary reinforcement spares; Make rack install and the internal unit easy accessibility, stress point ftractureed when additional liner plate and backing plate can avoid welding defective or the seismic shock of generation, and the body side frame structure that is separated into the little frame of a plurality of independences can improve the integral rigidity of body side frame.Unique two-chamber shape pillar construction, it is higher to compare other types column performance on cross section bending resistance, anti-twisting property, and base adopts the angle steel welding, and processing is simple and intensity is high and can reduce the center of gravity of rack, helps the antidetonation of rack more.Reinforcement column on the body side frame has not only played the effect of reinforced frame; Also the functional area of rack effectively, simply is divided into two zones simultaneously; The installation of convenient 19 inches equipment; Improved utilization of space in the rack, reached more than the 21Hz in the natural frequency of three directions through the framework of testing this programme.
Description of drawings
The perspective view of Fig. 1 the utility model.
The understructure sketch map of Fig. 2 the utility model.
The top board structure sketch map of Fig. 3 the utility model.
The body side frame structural representation of Fig. 4 the utility model.
The middle beam structural representation of Fig. 5 the utility model.
The end beam structure sketch map of Fig. 6 the utility model.
The column schematic cross-section of Fig. 7 the utility model.
Label declaration in the accompanying drawing: 1-framework, 2-base, 201-fixed frame, 202-carriage, 203-fixedly angle steel, 204-metal caul, 3-top board, 301-hollow frame, 302-fixed edge, 4-body side frame, 401-column, 402-strengthen column, 403-side crossbeam, 5-crossbeam, 501-middle beam, 502-end crossbeam, 503-air-vent, 6-liner plate.
Embodiment
As shown in Figure 1; The framework of this programme rack is an integral structure, fully without fixtures such as screws, under the all-metal situation of employing, utilizes welding that each parts are fixed together; Rigidity, intensity and the natural frequency of whole cabinet framework have been improved; Improve the loosening phenomenon of its cabinet framework after mechanical response under the earthquake working condition and earthquake,, guarantee that system can operate as normal under seismic environment in the cabinet for equipment in the cabinet provides enough reliable protection.Long W:450～the 900mm of the framework of this programme, wide D:450～900mm, high H:1750～2450mm.
Like Fig. 1,2,3, shown in 4; The rack of this programme comprises three parts: the framework 1 of place apparatus, be installed in the top board 3 of framework upper end and be installed in the base 2 of framework lower end; Whole framework 1 be shaped as rectangular stereochemical structure, the shape of top board 3 and base 2 is corresponding with the cross sectional shape of framework 1.Wherein framework 1 is made up of two body side frames 4 and the crossbeam 5 that connects two body side frames; Body side frame 4 comprises the reinforcement column 402 between two columns 401 laterally arranging side by side and two columns; Fixing through side crossbeam 403 between column and the reinforcement column, side crossbeam 403 is rectangular plate iron, and two ends are vertically fixed on column 401 and strengthen on the column 402; According to the size of rack the side crossbeam of varying number is set, is parallel to each other between each side crossbeam.Crossbeam 5 is fixed on the column 401 of two survey frameworks 4 with vertical mode and strengthens on the column 402; So not only strengthened the supporting layer of stablizing but also can be used as the equipment of putting of framework; Like Fig. 5, shown in 6, crossbeam 5 adopts the channel-section steel of U-shaped to process, and crossbeam 5 is divided into the middle beam 501 that connects body side frame 4 middle parts according to the difference of structure; Be connected body side frame on the end crossbeam 502 at two ends; Wherein the channel-section steel of middle beam 501 bottom is provided with tactic air-vent 503, and air-vent 503 both can be used for ventilating, and can reduce the stress that crossbeam two ends fixing point receives again.Do not have air-vent on the crossbeam of end, be mainly used in the structure of strengthening the cabinet top.As shown in Figure 7; Thereby column adopts whole surface plate to carry out the structure that bending fold forms two sealing chambers in the rectangle frame with the reinforcement column; Also can adopt two twisted plates to weld relatively and form the mode of dual cavity rectangle frame, this programme column of other structure has relatively improved cross section bending resistance, anti-twisting property greatly.
As shown in Figure 2; Base 2 is interconnected fixedly by angle steel fully and forms, and two limits of the angle steel after interfixing form a fixed frame 201 and a carriage 202 respectively, can be fitted in the lateral surface of framework 1 after wherein the internal diameter of fixed frame 201 is installed greater than the external diameter of framework 1 and base 2; Carriage 202 is buckled in the substrate of the bottom of framework 1 as rack bottom illiteracy plate; For improving the anti-twist property and the bending resistance of base 2, at fixedly angle steel 203 that connects two opposite side of center fixed of carriage 202, simultaneously for improving the anti-stress of each fixing point of base; Fixing again metal caul 204 in the fixed connection place of each angle steel; Metal caul 204 is fixed two angle steel of fixed point simultaneously, has further strengthened the intensity of fixing point, guarantees that big distortion does not take place in rack bottom when earthquake.
As shown in Figure 3; The rectangle plane hollow frame 301 that top board 3 forms for rectangular plate ferropexy; Outer side edges is provided with and hollow frame 301 one and vertical fixed edge 302 around top board 3; Fit with the outer side edges of framework in the inboard that the internal diameter of fixed edge 302 is installed back fixed edges 302 greater than the external diameter of framework and top board 3, fixed edge 302 can adopt directly the mode that plate iron is carried out bending to make.In addition for strengthening the structure of top board 3, same fixed point fixing metal backing plate at plate iron and plate iron.
Rack is fixedly the time; The bottom and the upper end that base 2 and top board 3 are buckled in framework 1 respectively utilize welding to fix again; The fixing welding manner that all adopts of connection in this programme between all parts does not adopt a screw, has avoided because the problem of the stress decrease that screw loosening possibly cause.Simultaneously in order to improve the fixed relationship between base, top board and the framework; Fixed point relevant is welded a leg-of-mutton metal backing 6 again; Metal backing 6 is fixed two connectors of fixed point respectively again, and this mode has improved the anti-twist ability of whole framework, counter-bending ability and natural frequency greatly.The rack natural frequency is higher, just can well avoid earthquake spectrum amplification region, has well protected internal unit.
When crossbeam 5 connects two body side frames 4, the same side that keeps two body side frames 4 not fixedly middle beam 501 forming the cabinet door of rack, and only in the upper end of this side anchor portion crossbeam 502 to form a beam of cabinet door.This face forms the cabinet shop front of rack after whole rack is installed the illiteracy plate, can exercisable space be provided for the manager in rack.The illiteracy plate of rack is installed in the side external surface of rack, and promptly the cabinet shop front is not installed, and the mode that whole illiteracy plate is taked to weld equally is fixed on the rack.
The rack distortion of 0.5 degree of only the having an appointment when rack of this programme design can guarantee earthquake; Can well protect internal unit; Whole framework has saved other auxiliary reinforcement spares; Make rack install and the internal unit easy accessibility, stress point ftractureed when additional metal backing and metal caul can avoid welding defective or the seismic shock of generation, and the body side frame structure that is separated into the little frame of a plurality of independences can improve the integral rigidity of body side frame.Unique two-chamber shape pillar construction, it is higher to compare other types column performance on cross section bending resistance, anti-twisting property, and base adopts the angle steel welding, and processing is simple and intensity is high and can reduce the center of gravity of rack, helps the antidetonation of rack more.Reinforcement column on the body side frame has not only played the effect of reinforced frame; Also the functional area of rack effectively, simply is divided into two zones simultaneously; The installation of convenient 19 inches equipment; Improved utilization of space in the rack, reached more than the 21Hz in the natural frequency of three directions through the framework of testing this programme.
Claims (10)
1. high-strength anti-seismic rack; The framework (1) that comprises the rectangular shape of housing apparatus; Be installed in the top board (3) and base (2) of framework top and bottom respectively; It is characterized in that said framework (1) is made up of two relative body side frames (4) and the crossbeam (5) that connects two body side frames, said body side frame (4) comprises two columns (401) that are arranged in parallel and the reinforcement column (402) between the column; Column and strengthen between the column fixingly through rectangular side crossbeam (403), said crossbeam (5) is connected on the reinforcement column (402) of column (401) and centre of two body side frame (4) one sides.
2. a kind of high-strength anti-seismic rack as claimed in claim 1; It is characterized in that; The radial section shape of said base (2) shape and framework (1) is identical and be made up of the angle steel that interfixes; Comprise a fixed frame (201) and a vertical carriage (202) that keeps off in the framework bottom of fitting with framework (1) outer side edges; Be fixed with the metal caul (204) that respectively be connected two angle steel towards the angle steel of framework one side with the angle steel junction at carriage (202), supporting bracket (202) center fixed has anti-twist fixedly angle steel (203).
3. a kind of high-strength anti-seismic rack as claimed in claim 1; It is characterized in that; Said column (401) is welded to each other the dimorphism cavity configuration that forms for the dimorphism cavity configuration of single surface plate bending fold formation or by two twisted plates, and said dimorphism chamber is two sealing chambers in the rectangle frame.
4. a kind of high-strength anti-seismic rack as claimed in claim 1; It is characterized in that; Said crossbeam (5) comprises the middle beam (501) that connects two body side frames (4) upper pillar stands (401) and strengthen column (402) centre position; And connect two body side frame columns and the end crossbeam (502) of strengthening the column top, and it is the channel-section steel of U-shaped that said middle beam (501) and end crossbeam (502) adopt the cross section, the channel-section steel bottom of said middle beam (501) has tactic air-vent (503).
5. a kind of high-strength anti-seismic rack as claimed in claim 1; It is characterized in that; Said top board (3) is for identical with framework (1) radial section shape and be fixedly connected the hollow frame (301) constitute by the rectangle steel plate; Around the said top board (3) outer side edges be provided with vertical and with the fixed edge (302) of hollow frame one, the outer side edges applying of the inboard of fixed edge (302) and framework (1).
6. a kind of high-strength anti-seismic rack as claimed in claim 1 is characterized in that, all is fixed together through welding manner between said framework (1) and base (2), the top board (3) and between each parts of framework (1), base (2) and top board (3) itself.
7. a kind of high-strength anti-seismic rack as claimed in claim 1; It is characterized in that; Each fixed point of said framework (1) and base (2) and top board (3) all is fixed with the leg-of-mutton metal backing (6) that is used to improve fixing point stress bearing strength, and liner plate (6) is separately fixed on two parts that fixed point interfixes.
8. a kind of high-strength anti-seismic rack as claimed in claim 1; It is characterized in that; Two body side frames (4) the wherein centre position of a side do not have the middle beam connection and the cabinet door of formation rack, are connected with the door beam of end crossbeam formation cabinet door in the upper end of two body side frames of this side.
9. a kind of high-strength anti-seismic rack as claimed in claim 1 is characterized in that, two one group of side crossbeam (403) employing on the said body side frame (4) and mode arranged side by side are fixed on column (401) and strengthen between the column (402).
10. a kind of high-strength anti-seismic rack as claimed in claim 1 is characterized in that the side external surface of said rack is equipped with the illiteracy plate, covers plate and is fixed by welding on the framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203084886U CN202172553U (en) | 2011-08-23 | 2011-08-23 | High-strength quake-proof cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203084886U CN202172553U (en) | 2011-08-23 | 2011-08-23 | High-strength quake-proof cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202172553U true CN202172553U (en) | 2012-03-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203084886U Expired - Lifetime CN202172553U (en) | 2011-08-23 | 2011-08-23 | High-strength quake-proof cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202172553U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970838A (en) * | 2012-11-20 | 2013-03-13 | 北京广利核系统工程有限公司 | High and low frequency impact resistance cabinet |
| CN106028714A (en) * | 2016-07-13 | 2016-10-12 | 柳超 | Crash-proof electrical cabinet with inner crashing counteracting force |
| CN106061163A (en) * | 2016-07-13 | 2016-10-26 | 柳超 | Anti-collision electrical cabinet based on integral framework |
| CN107484404A (en) * | 2017-09-25 | 2017-12-15 | 成都泵类应用技术研究所 | A kind of high intensity aviation protecting against shock antidetonation shielding case |
| CN107635364A (en) * | 2016-07-18 | 2018-01-26 | 广州市新舞台灯光设备有限公司 | A kind of new waterproof Multifunctional cabinet |
| CN108442548A (en) * | 2018-05-04 | 2018-08-24 | 南方风机股份有限公司 | A kind of Anti-seismic used in nuclear power station wall hole installing type silencer |
| CN108650841A (en) * | 2018-07-06 | 2018-10-12 | 江苏通鼎宽带有限公司 | Assemble frame, communication cabinet and communication cabinet group |
| CN108966554A (en) * | 2018-08-15 | 2018-12-07 | 浙江佳乐科仪股份有限公司 | A kind of frequency conversion cabinet quick-mount frame structure |
| CN109113263A (en) * | 2017-01-03 | 2019-01-01 | 郑瑞平 | Construction method for reinforcing steel structure beam or column |
| CN109288274A (en) * | 2018-09-30 | 2019-02-01 | 巢湖学院 | A kind of bilayer rotary type indoor security angle |
| CN110289562A (en) * | 2019-07-15 | 2019-09-27 | 七星电气股份有限公司 | A kind of box switching station's cabinet body facilitating installation |
| CN110996607A (en) * | 2019-11-21 | 2020-04-10 | 北京通畅电信规划设计院有限公司 | Indoor network covers uses antidetonation frame |
| CN111601482A (en) * | 2020-05-30 | 2020-08-28 | 戴文文 | Cloud computing server platform based on big data |
| CN112260066A (en) * | 2020-10-12 | 2021-01-22 | 浙江佳乐科仪股份有限公司 | Iron plate welding anti-seismic support structure |
| CN108966554B (en) * | 2018-08-15 | 2024-06-11 | 浙江佳乐科仪股份有限公司 | Quick installation frame construction of frequency conversion rack |
-
2011
- 2011-08-23 CN CN2011203084886U patent/CN202172553U/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970838A (en) * | 2012-11-20 | 2013-03-13 | 北京广利核系统工程有限公司 | High and low frequency impact resistance cabinet |
| CN102970838B (en) * | 2012-11-20 | 2015-10-28 | 北京广利核系统工程有限公司 | The rack that a kind of anti-low-and high-frequency is impacted |
| WO2018010280A1 (en) * | 2016-07-13 | 2018-01-18 | 李建尧 | Anti-collision electrical cabinet based on whole frame |
| CN106061163A (en) * | 2016-07-13 | 2016-10-26 | 柳超 | Anti-collision electrical cabinet based on integral framework |
| CN106061163B (en) * | 2016-07-13 | 2018-01-12 | 安徽明都电气有限公司 | A kind of crashworthiness regulator cubicle based on general frame |
| CN106028714A (en) * | 2016-07-13 | 2016-10-12 | 柳超 | Crash-proof electrical cabinet with inner crashing counteracting force |
| CN106028714B (en) * | 2016-07-13 | 2019-01-22 | 江西明正变电设备有限公司 | The crashworthiness electrical cabinet for the power that disappears is hit in a kind of |
| CN107635364A (en) * | 2016-07-18 | 2018-01-26 | 广州市新舞台灯光设备有限公司 | A kind of new waterproof Multifunctional cabinet |
| CN109113263A (en) * | 2017-01-03 | 2019-01-01 | 郑瑞平 | Construction method for reinforcing steel structure beam or column |
| CN107484404A (en) * | 2017-09-25 | 2017-12-15 | 成都泵类应用技术研究所 | A kind of high intensity aviation protecting against shock antidetonation shielding case |
| CN107484404B (en) * | 2017-09-25 | 2023-09-12 | 成都泵类应用技术研究所 | High-strength aviation anti-impact anti-seismic shielding case |
| CN108442548A (en) * | 2018-05-04 | 2018-08-24 | 南方风机股份有限公司 | A kind of Anti-seismic used in nuclear power station wall hole installing type silencer |
| CN108650841A (en) * | 2018-07-06 | 2018-10-12 | 江苏通鼎宽带有限公司 | Assemble frame, communication cabinet and communication cabinet group |
| CN108966554A (en) * | 2018-08-15 | 2018-12-07 | 浙江佳乐科仪股份有限公司 | A kind of frequency conversion cabinet quick-mount frame structure |
| CN108966554B (en) * | 2018-08-15 | 2024-06-11 | 浙江佳乐科仪股份有限公司 | Quick installation frame construction of frequency conversion rack |
| CN109288274B (en) * | 2018-09-30 | 2023-06-23 | 巢湖学院 | Double-layer rotatable indoor safety angle |
| CN109288274A (en) * | 2018-09-30 | 2019-02-01 | 巢湖学院 | A kind of bilayer rotary type indoor security angle |
| CN110289562A (en) * | 2019-07-15 | 2019-09-27 | 七星电气股份有限公司 | A kind of box switching station's cabinet body facilitating installation |
| CN110996607A (en) * | 2019-11-21 | 2020-04-10 | 北京通畅电信规划设计院有限公司 | Indoor network covers uses antidetonation frame |
| CN111601482A (en) * | 2020-05-30 | 2020-08-28 | 戴文文 | Cloud computing server platform based on big data |
| CN112260066A (en) * | 2020-10-12 | 2021-01-22 | 浙江佳乐科仪股份有限公司 | Iron plate welding anti-seismic support structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100094 Yongfeng Road, Beijing, No., building 5, building 5 Co-patentee after: China General Nuclear Power Corporation Patentee after: Beijing Guangli Nuclear Power Co., Ltd. Address before: 100094 Yongfeng Road, Beijing, No., building 5, building 5 Co-patentee before: China Guangdong Nuclear Power Group Co., Ltd. Patentee before: Beijing Guangli Nuclear Power Co., Ltd. |
|
| CB03 | Change of inventor or designer information |
Inventor after: Chen Wei Inventor after: Bai Tao Inventor after: Yuan Yuguo Inventor after: Jiang Zhirui Inventor before: Chen Wei Inventor before: Yuan Yuguo Inventor before: Jiang Zhirui |
|
| COR | Change of bibliographic data | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120321 |