CN112122560A - Fire grate casting mould of coal combustion boiler - Google Patents
Fire grate casting mould of coal combustion boiler Download PDFInfo
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- CN112122560A CN112122560A CN202011015863.8A CN202011015863A CN112122560A CN 112122560 A CN112122560 A CN 112122560A CN 202011015863 A CN202011015863 A CN 202011015863A CN 112122560 A CN112122560 A CN 112122560A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/02—Compacting by pressing devices only
- B22C15/08—Compacting by pressing devices only involving pneumatic or hydraulic mechanisms
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- Casting Devices For Molds (AREA)
Abstract
The invention relates to a coal combustion boiler grate casting mold, which comprises an installation frame, a forced pressing external member and a forming external member, wherein the forced pressing external member and the forming external member are sequentially arranged in the installation frame from top to bottom, and the invention can solve the following problems in the casting production of the existing boiler grate: a: when the existing boiler grate is cast, the existing boiler grate is produced by a pouring mode, and air is stored in molding sand because the molding sand is not compact during pouring production, so that a large number of air holes exist on the surface of the boiler grate produced by pouring, and the quality of a product is influenced; b, the existing boiler grate production mold needs to clean equipment after production, and molding sand is often stuck in the existing boiler grate production mold due to the fact that the size of the molding sand is too small, so that the cleaning difficulty of workers is greatly increased.
Description
Technical Field
The invention relates to the technical field of boiler grate casting, in particular to a coal combustion boiler grate casting mold.
Background
The grate is a part for stacking solid fuel in a boiler or an industrial boiler and enabling the solid fuel to be effectively combusted, the whole grate mainly comprises a frame and grate segments, the grate segments are usually made of cast iron, necessary ventilation gaps are kept between the assembled segments, and a separated ventilation chamber capable of adjusting air volume is arranged below the grate so that air can enter a fuel layer through the gaps to be combusted, and the chain grate is a device for mechanically combusting coal which is most applied in the existing industrial boiler, but certain defects still exist in the existing boiler grate during casting production.
The existing boiler grate has the following problems in casting production: a: when the existing boiler grate is cast, the existing boiler grate is produced by a pouring mode, and air is stored in molding sand because the molding sand is not compact during pouring production, so that a large number of air holes exist on the surface of the boiler grate produced by pouring, and the quality of a product is influenced; b, the existing boiler grate production mold needs to clean equipment after production, and molding sand is often stuck in the existing boiler grate production mold due to the fact that the size of the molding sand is too small, so that the cleaning difficulty of workers is greatly increased.
In order to make up the defects of the prior art, the invention provides a fire grate casting mould of a coal combustion boiler.
Disclosure of Invention
The technical scheme adopted by the invention to solve the technical problem is as follows: the utility model provides a coal combustion boiler grate casting mould, includes mounting bracket, high pressure external member and shaping external member, the mounting bracket is inside from last to down having set gradually high pressure external member and shaping external member, wherein:
the external member of forcing includes the pneumatic cylinder No. one, the connecting plate, the stripper plate, drive depression bar and slide the piece, the pneumatic cylinder is installed on the mounting bracket outer wall No. one, install the connecting plate on the output shaft of pneumatic cylinder No. one, evenly install the stripper plate through spring coupling's mode on the connecting plate, install the drive depression bar through sliding connection's mode on the stripper plate, the drive depression bar supports on leaning on the lower terminal surface of connecting plate, install the piece of sliding through the welded mode on the connecting plate lateral wall, slide the piece and install on the mounting bracket inner wall through sliding connection's mode, in operation, a pneumatic cylinder work, drive connecting plate down motion, thereby it extrudees the processing to drive the stripper plate to the shaping external member, the actuating lever effect increases the extrusion number of times of the stripper plate simultaneously, thereby realize the compaction.
The molding kit comprises support columns, a charging box, material containing plates, a support frame, a second hydraulic cylinder, a shaking block, a rotating shaft rod and a third motor, wherein the support columns are uniformly installed on the outer wall in a welding mode, the charging box is fixedly installed on the mounting frame, the material containing plates are installed inside the charging box in a sliding connection mode, the lower ends of the material containing plates abut against the support frame, the support frame is fixedly installed on an output shaft of the second hydraulic cylinder, the second hydraulic cylinder is installed on the outer wall of the mounting frame, the shaking blocks are uniformly arranged at the lower ends of the material containing plates, the shaking blocks are fixedly installed on the rotating shaft rod, the rotating shaft rod is fixedly installed on an output shaft of the third motor, the third motor is installed on the outer wall of the charging box through a motor base, molding sand is manually poured onto the material containing plates in the charging box during operation, and the third motor works under, and then drive the molding sand on the flourishing flitch and rock to reach the purpose of all even molding sand, place the condition emergence of reserving a large amount of air between the molding sand.
The extrusion plate is characterized in that material pressing strips are uniformly arranged on the inner wall of the extrusion plate in a sliding connection mode, translation abutting rods are uniformly abutted to the outer sides of the material pressing strips, the translation abutting rods are uniformly arranged on the inner wall of the extrusion plate in a sliding connection mode, spherical balls capable of moving freely are arranged at the heads of the translation abutting rods in a rotating connection mode, soil scraping strips are arranged on the translation abutting rods, the material pressing strips are abutted to sliding pressure rods, the sliding pressure rods are arranged on the inner wall of the extrusion plate in a sliding connection mode, the upper ends of the sliding pressure rods are abutted to driving pressure rods, when the extrusion plate is extruded to the molding sand surface of the forming kit due to the working of a first hydraulic cylinder, the driving pressure rods continue to move due to the working of the first hydraulic cylinder, so that the sliding pressure rods are driven to move, the material pressing strips are driven to extrude the molding sand surface, the purpose of secondary extrusion is achieved, surface extrusion is, thereby the condition that the inside cavity of molding sand exists has greatly been avoided taking place.
As a preferable technical scheme of the invention, the charging box is symmetrically provided with the push blocks in a welding mode, the push blocks are uniformly provided with spherical balls capable of freely moving, the charging box is of a two-section structure, and the width of the upper end of the inner diameter of the charging box is larger than that of the lower end of the inner diameter of the charging box.
As a preferred technical scheme of the invention, the inner wall scrapers are uniformly arranged on the side walls of the material containing plates in a spring connection mode, the inner wall scrapers are uniformly arranged on the inner wall scrapers in a spring connection mode, and the partition blocks are of triangular structures.
As a preferred technical scheme of the invention, the support frame is of a V-shaped structure, the support frame is uniformly provided with support struts in a rotary connection mode, the inner walls of the support struts are provided with connecting columns in a welding mode, springs are arranged between the connecting columns, and the support struts are provided with support top plates in a rotary connection mode.
As a preferred technical scheme of the present invention, the shaking block is a petal-shaped structure, shaking rods are uniformly installed on the shaking block in a spring connection manner, and sliding rollers are installed on the shaking rods in a rotation connection manner.
As a preferred technical scheme, the extrusion push rod is installed on the pressing strip in a sliding connection mode, the extrusion push rod is located right above the pressing block, the outer wall of the extrusion push rod is uniformly abutted with friction rollers, the friction rollers are uniformly installed on the inner wall of the pressing strip in a rotating connection mode, the extrusion push rod is provided with a circular truncated cone top block, the circular truncated cone top block is abutted with a moving rod, the moving rod is installed on the inner wall of the pressing strip in a spring connection mode, the moving rod is provided with a needle fixing plate, and the needle fixing plate is uniformly provided with sand poking needles.
Compared with the prior art, the invention has the following advantages:
1. the invention can solve the following problems of the existing boiler grate in casting production: a: when the existing boiler grate is cast, the existing boiler grate is produced by a pouring mode, and air is stored in molding sand because the molding sand is not compact during pouring production, so that a large number of air holes exist on the surface of the boiler grate produced by pouring, and the quality of a product is influenced; b, the existing boiler grate production mold needs to clean equipment after production, and molding sand is often stuck in the existing boiler grate production mold due to the fact that the size of the molding sand is too small, so that the cleaning difficulty of workers is greatly increased.
2. In the invention, a strong pressure sleeve is designed, the first hydraulic cylinder works to drive the extrusion plate to move downwards to the forming sleeve to be compressed under the action of the connecting plate, the drive pressure rod is extruded to drive the snap pressure rod to move downwards, thereby driving the material pressing strips to compress the forming sleeve, reducing the extrusion area and increasing the extrusion force, leading the molding sand in the forming sleeve to be more compact, when the material pressing strip moves downwards, the extrusion push rod moves inwards under the extrusion action, thereby leading the circular truncated cone top block to extrude the movable rod to move downwards, driving the needle fixing plate to drive the sand poking needle to move downwards, therefore, the molding sand in the molding sleeve 3 is changed from strip-shaped compression into point-shaped compression, and the molding sand is compressed for three times through the surface, the line and the point, so that the tightness of the molding sand is greatly increased, the condition that the molding sand is loose is avoided, and the product quality is improved.
3. According to the invention, the material containing plate is designed, when the material containing plate moves upwards under the action of the second hydraulic cylinder, the inner wall scraper on the side wall of the material containing plate pops up under the action of the spring, so that the inner wall of the charging box is scraped, and the purpose of cleaning the molding sand on the inner wall of the charging box is achieved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the structural schematic of the present invention;
FIG. 3 is a schematic cross-sectional view A-A of FIG. 2 of the present invention;
FIG. 4 is an enlarged schematic view of area B of FIG. 3 of the present invention;
FIG. 5 is a schematic view of the construction of the compression plate of the present invention;
fig. 6 is a schematic cross-sectional view of the region C of fig. 5 in accordance with the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained with reference to fig. 1 to 6.
The utility model provides a coal combustion boiler grate casting mould, includes mounting bracket 1, high pressure external member 2 and shaping external member 3, 1 inside from last strong pressure external member 2 and the shaping external member 3 of down having set gradually of mounting bracket, wherein:
forced external member 2 includes the pneumatic cylinder No. one, connecting plate 21, stripper plate 22, drive depression bar 23 and slide piece 24, the pneumatic cylinder is installed on 1 outer wall of mounting bracket, install connecting plate 21 on the output shaft of a pneumatic cylinder, stripper plate 22 is evenly installed through spring coupling's mode on the connecting plate 21, drive depression bar 23 is installed through sliding connection's mode on the stripper plate 22, drive depression bar 23 supports on the lower terminal surface of connecting plate 21, slide piece 24 is installed through the welded mode on the connecting plate 21 lateral wall, slide piece 24 and install on 1 inner wall of mounting bracket through sliding connection's mode, concrete during operation, a pneumatic cylinder work, act on through connecting plate 21, drive stripper plate 22 down motion, thereby realize the extrusion operation to shaping external member 3.
The inner wall of the extrusion plate 22 is uniformly provided with the material pressing strips 221 in a sliding connection mode, the outer sides of the material pressing strips 221 are uniformly abutted against translation abutting rods 222, the translation abutting rods 222 are uniformly arranged on the inner wall of the extrusion plate 22 in a sliding connection mode, the head parts of the translation abutting rods 222 are rotatably connected with spherical balls which can move freely, soil scraping strips 223 are arranged on the translation abutting rods 222, the material pressing strips 221 are abutted against the aligning pressure rods 224, the aligning pressure rods 224 are arranged on the inner wall of the extrusion plate 22 in a sliding connection mode, the upper ends of the aligning pressure rods 224 are abutted against the driving pressure rods 23, when the extrusion plate 22 moves to the molding sleeve 3 for compression due to the action of a hydraulic cylinder, the driving pressure rods 23 are extruded to drive the aligning pressure rods 224 to move downwards, so that the material pressing strips 221 are driven to compress the molding sleeve 3, and the extrusion force is increased by dynamically reducing the extrusion area, make the inside type of shaping external member 3 husky compacter, press material strip 221 to compress shaping external member 3 simultaneously, the translation supports the effect of pole 222 for press material strip 221 to down move perpendicularly, avoid the type on shaping external member 3 surface husky the condition of being taken up to take place, scrape the effect of native strip 223 simultaneously, strike off the type sand on pressing material strip 221 surface, avoided the type sand to get into the emergence that the stripper plate 22 leads to the condition of pressing material strip 221 to block.
The pressing strip 221 is provided with an extrusion push rod 2211 in a sliding connection manner, the extrusion push rod 2211 is positioned right above the pressing block 321, the outer wall of the extrusion push rod 2211 is uniformly abutted against a friction roller 2212, the friction roller 2212 is uniformly arranged on the inner wall of the pressing strip 221 in a rotation connection manner, the extrusion push rod 2211 is provided with a circular truncated cone top block 2213, the circular truncated cone top block 2213 is abutted against a moving rod 2214, the moving rod 2214 is arranged on the inner wall of the pressing strip 221 in a spring connection manner, the moving rod 2214 is provided with a needle fixing plate 2215, the needle fixing plate 2215 is uniformly provided with sand poking needles 2216, during specific work, when the pressing strip 221 moves downwards, the extrusion push rod 2211 is subjected to extrusion and moves inwards, so that the circular truncated cone top block 2213 extrudes the moving rod 2214 downwards, thereby driving the needle fixing plate 2215 to drive the sand poking needles 2216 to move downwards, and further changing the shaped sand in the forming sleeve 3 from strip compression into point-like compression, the compactness of the molding sand is greatly increased, and the condition that the molding sand is loose is avoided.
The molding kit 3 comprises supporting columns 31, a charging box 32, a material containing plate 33, a supporting frame 34, a second hydraulic cylinder, a shaking block 35, a rotating shaft rod 36 and a third motor, wherein the supporting columns 31 are uniformly installed on the outer wall in a welding mode, the charging box 32 is fixedly installed on the mounting frame 1, the material containing plate 33 is installed inside the charging box 32 in a sliding connection mode, the lower end of the material containing plate 33 abuts against the supporting frame 34, the supporting frame 34 is fixedly installed on an output shaft of the second hydraulic cylinder, the second hydraulic cylinder is installed on the outer wall of the mounting frame 1, the shaking block 35 is uniformly arranged at the lower end of the material containing plate 33, the shaking block 35 is fixedly installed on the rotating shaft rod 36, the rotating shaft rod 36 is fixedly installed on an output shaft of the third motor, the third motor is installed on the outer wall of the charging box 32 through a motor base, and during specific work, molding sand, then No. three motor work, drive and rotate axostylus axostyle 36 and rotate to drive and shake the piece 35 and move, thereby drive the inside type sand of charging box 32 and carry out the purpose of shake, thereby make the type sand in charging box 32 arrange more evenly.
Bulldozing block 321 is installed through welded mode symmetry on the charging box 32, evenly be provided with the spherical ball that can free motion on the bulldozing block 321, and charging box 32 is two-section formula structure, charging box 32's internal diameter upper end width is greater than the lower extreme width, when concrete work, when the action of a pneumatic cylinder down motion is received to stripper plate 22, the bulldozing block 321 effect, through the effect of extrusion push rod 2211 effect on the extrusion drive pressure material strip 221, thereby extrude the inside type sand of shaping external member 3, thereby reach the purpose that promotes the tight degree of type sand.
Inner wall scraper blade 331 is evenly installed through spring coupling's mode on flourishing flitch 33 lateral wall, evenly install through spring coupling's mode on the inner wall scraper blade 331 and separate disconnected piece 332, it is the triangle-shaped structure to separate piece 332, when the flourishing flitch 33 during specific work, when the upwelling because of No. two pneumatic cylinder effects, inner wall scraper blade 331 on the flourishing flitch 33 lateral wall pops out because of the spring action, thereby strike off the processing to the inner wall of charging box 32, thereby reach the purpose of clearance charging box 32 inner wall molding sand, set up triangle-shaped separate disconnected piece 332 again through spring coupling's mode on the inner wall scraper blade 331 simultaneously, thereby increased the hierarchy of inner wall scraper blade 331, make and can place more materials on the inner wall scraper blade, the clearance effect has been promoted.
The shaking block 35 is of a petal-shaped structure, the shaking rod 351 is evenly installed on the shaking block 35 through a spring connection mode, the sliding idler wheel 352 is installed on the shaking rod 351 through a rotation connection method, during specific work, the third motor works to drive the rotating shaft rod 36 to move, so that the shaking block 35 is driven to rotate to continuously push the bottom end of the material containing plate 33, the purpose of shaking the material containing plate 33 is achieved, meanwhile, the shaking block 35 is of a plum blossom-shaped structure, the vibration frequency of the material containing plate 33 is increased, molding sand on the material containing plate 33 is more even, and the quality of part molding is improved.
When in work:
s1, type sand filling: the molding sand is poured into a material containing plate 33 in the charging box 32 manually, so that the purpose of molding sand filling is achieved;
s2, shaking the molded sand evenly: after the molding sand filling operation is completed, the third motor works to drive the rotating shaft rod 36 to rotate, so that the shaking block 35 is driven to move, and the shaking block 35 is of a plum blossom-shaped structure, so that the shaking frequency of the material containing plate 33 is increased, molding sand on the material containing plate 33 is more uniform, and the purpose of uniformly shaking the molding sand is achieved;
s3, compacting shaped sand: after the molding sand shaking operation is completed, the first hydraulic cylinder works, the extrusion plate 22 is driven to move downwards under the action of the connecting plate 21, and the extrusion plate 22 works to extrude the molding sand through surfaces, lines and points, so that the compactness of the molding sand is improved, the molding sand is prevented from being loose, and the purpose of compacting the molding sand is achieved;
s4, type sand cleaning: after the molding sand compaction operation is finished, the second hydraulic cylinder acts, the supporting frame 34 acts to push the material containing plate 33 to move upwards, and meanwhile, the inner wall scraper 331 on the side wall of the material containing plate 33 pops up due to the action of the spring, so that the inner wall of the charging box 32 is scraped, and the purpose of cleaning the molding sand on the inner wall of the charging box 32 is achieved;
s5, repeating the steps S1-S4, and continuously casting the boiler grate.
The foregoing illustrates and describes the principles, general features, and advantages of the present 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 given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a coal combustion boiler grate casting mould, includes mounting bracket (1), forced compression external member (2) and shaping external member (3), its characterized in that: mounting bracket (1) is inside from last down to be provided with forced compression external member (2) and shaping external member (3) in proper order, wherein:
the forced compression external member (2) comprises a first hydraulic cylinder, a connecting plate (21), an extrusion plate (22), a driving pressure rod (23) and a sliding block (24), the first hydraulic cylinder is installed on the outer wall of the installation frame (1), the connecting plate (21) is installed on an output shaft of the first hydraulic cylinder, the extrusion plate (22) is evenly installed on the connecting plate (21) in a spring connection mode, the driving pressure rod (23) is installed on the extrusion plate (22) in a sliding connection mode, the driving pressure rod (23) abuts against the lower end face of the connecting plate (21), the sliding block (24) is installed on the side wall of the connecting plate (21) in a welding mode, and the sliding block (24) is installed on the inner wall of the installation frame (1) in a sliding connection mode;
the molding kit (3) comprises a support column (31), a charging box (32), a material containing plate (33), a support frame (34), a second hydraulic cylinder, a shaking block (35), a rotating shaft lever (36) and a third motor, the support columns (31) are uniformly installed on the outer wall in a welding mode, a charging box (32) is fixedly installed on the installation frame (1), a material containing plate (33) is installed inside the charging box (32) in a sliding connection mode, the lower end of the material containing plate (33) abuts against a support frame (34), the support frame (34) is fixedly installed on an output shaft of a second hydraulic cylinder, the second hydraulic cylinder is installed on the outer wall of the installation frame (1), shaking blocks (35) are uniformly arranged at the lower end of the material containing plate (33), the shaking blocks (35) are fixedly installed on a rotating shaft rod (36), the rotating shaft rod (36) is fixedly installed on an output shaft of a third motor, and the third motor is installed on the outer wall of the charging box (32) through a motor base;
pressing bars (221) are evenly arranged on the inner wall of the extrusion plate (22) in a sliding connection mode, translation abutting rods (222) are evenly abutted to the outer sides of the pressing bars (221), the translation abutting rods (222) are evenly arranged on the inner wall of the extrusion plate (22) in a sliding connection mode, spherical balls capable of moving freely are arranged at the heads of the translation abutting rods (222) in a rotating connection mode, soil scraping bars (223) are arranged on the translation abutting rods (222), pressing bars (221) are abutted to sliding pressing rods (224), the sliding pressing rods (224) are arranged on the inner wall of the extrusion plate (22) in a sliding connection mode, and driving pressing rods (23) are abutted to the upper ends of the sliding pressing rods (224).
2. The coal-fired boiler grate casting mold of claim 1, wherein: the charging box (32) is symmetrically provided with push blocks (321) in a welding mode, spherical balls capable of moving freely are uniformly arranged on the push blocks (321), the charging box (32) is of a two-section structure, and the width of the upper end of the inner diameter of the charging box (32) is larger than that of the lower end of the inner diameter of the charging box.
3. The coal-fired boiler grate casting mold of claim 1, wherein: the material containing plate (33) is uniformly provided with inner wall scrapers (331) on the side wall in a spring connection mode, the inner wall scrapers (331) are uniformly provided with partition blocks (332) in a spring connection mode, and the partition blocks (332) are of triangular structures.
4. The coal-fired boiler grate casting mold of claim 1, wherein: support frame (34) are the V-arrangement structure, evenly install support branch (341) through the mode of rotating the connection on support frame (34), install spliced pole (342) through the welded mode on support branch (341) inner wall, are provided with the spring between spliced pole (342), install support roof (343) through the mode of rotating the connection on support branch (341).
5. The coal-fired boiler grate casting mold of claim 1, wherein: the shaking block (35) is of a petal-shaped structure, shaking rods (351) are uniformly installed on the shaking block (35) in a spring connection mode, and sliding rollers (352) are installed on the shaking rods (351) in a rotating connection mode.
6. The coal-fired boiler grate casting mold of claim 1, wherein: install extrusion push rod (2211) through sliding connection's mode on pressure material strip (221), extrusion push rod (2211) is located bulldozing piece (321) directly over, evenly support to have friction roller (2212) on extrusion push rod (2211) outer wall, friction roller (2212) is evenly installed on pressure material strip (221) inner wall through the mode of rotating the connection, install round platform kicking block (2213) on extrusion push rod (2211), it has carriage release lever (2214) to support on round platform kicking block (2213), carriage release lever (2214) are installed on pressure material strip (221) inner wall through spring coupling's mode, install solid faller (2215) on carriage release lever (2214), evenly set up on solid faller (2215) and stab sand needle (2216).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011015863.8A CN112122560A (en) | 2020-09-24 | 2020-09-24 | Fire grate casting mould of coal combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011015863.8A CN112122560A (en) | 2020-09-24 | 2020-09-24 | Fire grate casting mould of coal combustion boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112122560A true CN112122560A (en) | 2020-12-25 |
Family
ID=73839546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011015863.8A Withdrawn CN112122560A (en) | 2020-09-24 | 2020-09-24 | Fire grate casting mould of coal combustion boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112122560A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112847238A (en) * | 2021-01-14 | 2021-05-28 | 伍晓明 | Refrigerator division board equipment processingequipment |
-
2020
- 2020-09-24 CN CN202011015863.8A patent/CN112122560A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112847238A (en) * | 2021-01-14 | 2021-05-28 | 伍晓明 | Refrigerator division board equipment processingequipment |
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Application publication date: 20201225 |