CN105062513A - Device capable of achieving automatic coke scraping operation of coke pusher - Google Patents
Device capable of achieving automatic coke scraping operation of coke pusher Download PDFInfo
- Publication number
- CN105062513A CN105062513A CN201510505089.1A CN201510505089A CN105062513A CN 105062513 A CN105062513 A CN 105062513A CN 201510505089 A CN201510505089 A CN 201510505089A CN 105062513 A CN105062513 A CN 105062513A
- Authority
- CN
- China
- Prior art keywords
- coke
- pushing
- scraper bowl
- plate
- push rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Coke Industry (AREA)
Abstract
The invention discloses a device capable of achieving automatic coke scraping operation of a coke pusher, and belongs to the technical field of auxiliary equipment of coking production. The improvement lies in that: a baffle block is fixed on the inner side of each coke pushing rod carrier roller bracket; the bottom board of a scraper pan is in the same horizontal plane with the lower bottom surface of a coke pushing rod; the back board, perpendicular to the bottom board of the scraper pan, of the scraper pan is parallelly fixed to the left side surface of the coke pushing rod; coaxial through holes are formed in the back board of the scraper pan and the coke pushing rod in the thickness direction; the device also comprises a coke pushing board matched with the bottom board of the scraper pan in width, a coke baffle with the lower edge connected with the upper edge of the coke pushing board in a rotating manner, pushing rods and springs fixed at the right ends of the pushing rods; the coke pushing board is vertically placed on the bottom board of the scraper pan; the pushing rods are perpendicular to the back board of the scraper pan and the left ends of the pushing rods horizontally penetrate through the through holes in the coke pushing rod and the back board of the scraper pan to be fixed to the coke pushing board; the distance between each pushing rod and the horizontal plane is the same to that between each baffle fixed on the inner side of the corresponding coke pushing rod carrier roller bracket to the horizontal plane; a limiting ring is mounted on the rod body of each pushing rod. According to the device, the working efficiency and operation safety are improved, the life of a coke oven is prolonged, and the device is simple in structure and wide in popularization prospect.
Description
Technical field
The invention discloses a kind of pushing machine that realizes and automatically take off the burnt device operated, belong to coking production technical field of auxiliary equipment.
Background technology
Pushing machine is the important machinery that coke oven produces in " four carts ", its function has opening/closing machine wing furnace door, completes coke pushing, flat coal, Qing Men, stifled cigarette fire extinguishing etc.Cause coke shrinkage degree difference after taking off the charge of coke maturation that burnt phenomenon refers in coking chamber because coal blending is improper or excessive, the furnace temperature of expanding too low cause the raw or furnace temperature of coke too high cause coke frangible etc. a variety of causes causes coke pushing resistance excessive, coke is caused not release smoothly, need manually to process, after coke pushing resistance reduces, release the situation of coke again with pushing machine.Need manually to carry out taking off burnt process once generation coke pushing difficulty, need to process charge of coke at cokery side, to reduce coke pushing resistance simultaneously; Burnt method that what cokery side was traditional take off is that to install a side plate at the front lower portion of coke pushing rod of coke pusher be leg-of-mutton scraper bowl, scraper bowl is adjacent to bottom of carbonization chamber against the iterative method of pushing ram in coking chamber and is little by little shoveled out by coke, then artificial again with instrument such as homalocephalus crooked chisel grade by coke from clearing out to scrapper conveyor spades; Because dipper capacity is less, the amount of coke at every turn shoveled out is little, so need pushing ram again and again to retreat could to complete gradually many times to take off burnt operation to reach the object reducing coke pushing resistance.Thisly traditional manually take off subject matter that burnt mode exists and defect has: (1), labour intensity is large, danger coefficient is high, working efficiency is low: because the coke clawed from coking chamber needs manually little by little to clear out from scraper bowl with crooked chisel is sub at once, and cleaning operation position faces the distance that unlimited fire door only has about a meter, hyperthermia radiation and the hot gas wave on about 1000 DEG C, furnace wall surface cause serious security threat to operator, easy generation burn hazard, substantially increases the work difficulty and labour intensity of taking off burnt operation; Produce a large amount of steam containing toxic gas take off the hot coke chance water dropping down onto scrapper conveyor in addition in scraper bowl after and also can cause very large murder by poisoning to human body.So tradition is taken off and burnt general is adopted grouping to rotate to take off burnt mode, everyone operation of at once substituting after taking off 2-3 shovel coke i.e., if will ensure like this to take off uninterruptedly carrying out continuously of burnt operation, only pusher side just needs more than at least 6 people to realize, and an average scraper bowl coke needs just can clean out for 3-5 minute.(2), cleaning effect is poor: because outside width of bucket is less, higher highly again, simultaneously by the restriction that operator operating space is narrow and small, causes scraper bowl rearmost end and cannot clean out near the coke taking off iron plate bottom, burnt person side.(3) the coke oven life-span is reduced: very long owing to taking off burnt inefficiency, activity duration, fire door unlatching for a long time can cause fire door lining brick, furnace wall brick surface temperature reduces fast, stove brick corresponding generation shrinkage phenomenon, after fire door is closed, brick surface temperature sharply raises and heat occurs rises, so violent volume change is easy to cause breaking and damage of wall brick, thus cause furnace wall blowby to produce to smolder phenomenon of burning with anger, worsen coking technique, and have a strong impact on coke oven work-ing life.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pushing machine that realizes and automatically takes off burnt device, this device can complete removing charge of coke in coke oven automatically, without the need to manual removal, while burnt efficiency is taken off in lifting, improve job security, extend coke oven work-ing life.
The technical solution adopted in the present invention is:
Burnt device taken off automatically by a kind of pushing machine that realizes, comprise pushing ram, scraper bowl and pushing ram roller rack, its improvements are: fixed stop inside pushing ram roller rack, scraper bowl base plate and pushing ram bottom surface are in same level, scraper bowl backboard perpendicular to scraper bowl base plate is parallel with pushing ram left surface fixing, and scraper bowl backboard and pushing ram thickness direction have the through hole of coaxial line; It also comprises the coke pushing plate that width and scraper bowl baseplate width match, the gear Jiao plate be rotationally connected with coke pushing plate top below, push rod and is fixed on the spring of push rod right-hand member, coke pushing plate to be positioned on scraper bowl base plate and vertical with scraper bowl base plate, push rod is vertical with scraper bowl backboard, and left end is fixed horizontal through the through hole on pushing ram and scraper bowl backboard and coke pushing plate; Push rod is identical with the vertical height of block width between centers scraper bowl base plate fixing inside pushing ram roller rack to the vertical height of scraper bowl base plate, mounting limit ring on the push rod body of rod.
Burnt device taken off automatically by above-mentioned a kind of pushing machine that realizes, and described push rod is 2 and measure-alike, and 2 through holes equal with scraper bowl base plate vertical range run through scraper bowl backboard and pushing ram thickness direction respectively, and 2 push rods are each passed through 2 through holes.
Burnt device taken off automatically by above-mentioned a kind of pushing machine that realizes, and described coke pushing plate is all rectangle with the burnt plate of gear, and coke pushing plate is rotationally connected with the burnt plate of gear below by the unidirectional hinge being mounted thereon limit; Described push rod length is the difference of push rod right-hand member spring and the vertical range between block Contact pushing ram left surface and block and spring original length; When coke pushing plate move to contact with scraper bowl backboard time, be installed on spacing ring on the push rod body of rod equal with the length of scraper bowl base plate apart from the distance of pushing ram right flank; Described scraper bowl carupace width and pushing ram left surface width match; Be running fit between through hole on described push rod and scraper bowl backboard and pushing ram.
Burnt device taken off automatically by above-mentioned a kind of pushing machine that realizes, and described coke pushing plate bottom has trapezoidal hole.
Working process of the present invention is: first, and pushing ram promotes scraper bowl and enters after coking chamber shovels coke, and the related horizontal push of coke pushing plate to correspondingly rear movement, can be kept off burnt plate and also can slide vertically upward along pushing ram left surface under the resistance of coke, when after the full coke of shovel in scraper bowl, coke pushing plate retreats to scraper bowl backboard place, keep off burnt plate to be close to pushing ram and almost to become plumbness, pushing ram drives scraper bowl to exit coking chamber subsequently, in pushing ram fallback procedures, the spring of push rod end gradually with the block being arranged on pushing ram roller rack bottom slowly close to until contact and start to compress, now the forefront of scraper bowl is in directly over scrapper conveyor, coke pushing plate is in the criticality preparing driven forward, along with the continuation of pushing ram retreats, spring is compressed gradually, the snap-in force of spring promotes coke pushing plate by push rod and moves forward in spades, to realize automatic coke discharging action, automatically stop under coke pushing plate walks to its meeting protection at spacing ring of forward position place of spades, thus complete automatic coke discharging operation, now the draught of spring is maximum, after drained coke, pushing ram promotion scraper bowl enters coking chamber again to carry out shoveling burnt operation, repeat the action of above-mentioned 1-6 item successively and carry out that automatically shovel is burnt to be operated with coke discharging.
Beneficial effect of the present invention is:
The present invention keeps off burnt plate and enters coking chamber at pushing ram and shovel in burnt process, can effectively prevent too much crushed coke block and coke powder from being fallen to after coke pushing plate by top, thus it is not in place to cause coke pushing plate to retreat, and reduces the burnt amount of once shovel.It is connected with the top of the mode of unidirectional hinge with coke pushing plate below, can avoid occurring that the burnt plate of gear turn to the generation of coke pushing plate former case.The object of vertical direction " sealing " scraper bowl just along with the advance of coke pushing plate, retrogressing and be adjacent to pushing ram and slide up and down in the vertical direction, can be played in the burnt plate top of such gear; The trapezoidal hole of the bottom of coke pushing plate is convenient to clear up the coke briquette fallen to after coke pushing plate, coke powder.
The present invention only needs a people scene to command, check that scraper bowl situation of being heated also carries out fetching water cooling operation in time, improve working efficiency, improve labor strength, significantly improve the security of execute-in-place, effectively alleviate the disadvantageous effect that the long-time open cold air of fire door causes stove brick and body of heater, avoid the too low situation causing cracking damage of stove brick temperature, reduce stove brick blowby and smoldering to burn with anger the generation of phenomenon, to prolongation converter life Be very effective; And significantly shorten and take off the impact of burnt operation on the production time, all play a positive role for realizing the stable smooth operation produced as early as possible and protecting coke output.This project organization is simple, easy to operate, and versatility is comparatively strong, and promotion prospect is wide.
Accompanying drawing explanation
Fig. 1 is that the present invention assembles schematic diagram;
Fig. 2 is scraper bowl side-view;
Fig. 3 is block scheme of installation;
Fig. 4 is coke pushing plate schematic diagram;
Fig. 5 is push rod schematic diagram;
Fig. 6 ~ Figure 11 is workflow schematic diagram of the present invention;
Be labeled as in figure: pushing ram 1, pushing ram roller rack 2, block 3, scraper bowl 4, coke pushing plate 5, keep off burnt plate 6, push rod 7, through hole 8, spring 9, spacing ring 10, unidirectional hinge 11, trapezoidal hole 12, coking chamber 13, scrapper conveyor 14.
Embodiment
Fig. 1 ~ Fig. 5 shows, the present invention includes pushing ram 1, scraper bowl 4, pushing ram roller rack 2, the rectangle coke pushing plate 5 that width and scraper bowl 4 baseplate width match, the rectangle that following and coke pushing plate 5 top realizes being rotationally connected by unidirectional hinge 11 keeps off burnt plate 6, 2 push rods 7 and the spring 9 being fixed on push rod 7 right-hand member, the inner side fixed stop 3 of pushing ram roller rack 2, scraper bowl 4 base plate and pushing ram 1 bottom surface are in same level, scraper bowl 4 backboard perpendicular to scraper bowl 4 base plate is parallel with pushing ram 1 left surface fixing, the backboard of scraper bowl 4 and pushing ram 1 thickness direction have the through hole 8 of coaxial line, through hole 8 has 2, and it is equal with the vertical range of scraper bowl 4 base plate, coke pushing plate 5 to be positioned on scraper bowl 4 base plate and vertical with the base plate of scraper bowl 4,2 push rods be parallel to each other 7 are vertical with scraper bowl backboard respectively, left end this to fix with coke pushing plate 5 horizontal through 2 through holes 8 on pushing ram 5 and scraper bowl 4 backboard, be running fit between push rod 7 and through hole 8, the vertical height of push rod 7 to scraper bowl 4 base plate is identical with the height of width between centers scraper bowl 4 base plate of block 3 fixing inside pushing ram roller rack 2, and the length of push rod 7 is the difference of push rod right-hand member spring 9 and the vertical range between block 3 Contact pushing ram 1 left surface and block 3 and spring 9 original length, mounting limit ring 10 on the body of rod of push rod 7, when coke pushing plate 5 move to contact with the backboard of scraper bowl 4 time, spacing ring 10 is equal with the length of scraper bowl 4 base plate apart from the distance of pushing ram 1 right flank.
Fig. 4 shows, and the bottom of coke pushing plate 5 has trapezoidal hole 12, and its object is for ease of clearing up the coke briquette fallen to after coke pushing plate 5, coke powder.
Below in conjunction with Fig. 6 ~ Figure 11, use procedure of the present invention is described in detail:
As Fig. 6, scraper bowl 4 install or unsnatched coke scraper bowl 4 prepare enter coking chamber 13 shovel get coke;
As Fig. 7, pushing ram 1 promotes scraper bowl 4 and enters after coking chamber 13 shovels coke, the related horizontal push 7 of coke pushing plate 5 can move backward accordingly under the extruding of coke, the following meeting keeping off burnt plate 6 for axially to rotate with unidirectional hinge 11, is reflected to the top keeping off burnt plate 6 and both can slides vertically upward along pushing ram 1;
As Fig. 8, when after the full coke of shovel in scraper bowl 4, coke pushing plate 5 retreats to the backboard place of scraper bowl 4 and backboard offsets, and keep off burnt plate 6 and be close to pushing ram 1 and almost become plumbness, pushing ram 1 drives scraper bowl 4 to exit coking chamber subsequently;
As Fig. 9, in pushing ram 1 fallback procedures, the spring 9 of the right-hand member of push rod 7 gradually with the block 3 being arranged on pushing ram roller rack 2 bottom slowly close to until contact and start to compress, now the forefront of scraper bowl 4 is in directly over scrapper conveyor 14, and coke pushing plate 5 is in the criticality preparing driven forward;
As Figure 10, along with the continuation of pushing ram 1 retreats, spring 9 is compressed gradually, and the snap-in force of spring 9 promotes coke pushing plate 5 by push rod 7 and moves forward in scraper bowl 4, to realize automatic coke discharging action;
As Figure 11, its meeting of forward position place walking to scraper bowl 4 when coke pushing plate 5 automatically be stopped under the protection of spacing ring 10, thus completes automatic coke discharging operation, and now the draught of spring 9 is maximum; After drained coke, pushing ram 1 promotes scraper bowl 4 and again enters coking chamber 13 and carry out shoveling burnt operation, repeats above-mentioned action successively and carries out that shovel is automatically burnt to be operated with coke discharging.
Claims (4)
1. one kind can realize the device that Jiao taken off automatically by pushing machine, comprise pushing ram (1), scraper bowl (4) and pushing ram roller rack (2), it is characterized in that: pushing ram roller rack (2) inner side fixed stop (3), the base plate of scraper bowl (4) and the bottom surface of pushing ram (1) are in same level, scraper bowl (4) backboard perpendicular to scraper bowl (4) base plate is parallel with pushing ram (1) left surface fixing, and scraper bowl (4) backboard and pushing ram (1) thickness direction have the through hole (8) of coaxial line; It also comprises the coke pushing plate (5) that width and scraper bowl (4) baseplate width match, gear Jiao's plate (6) be rotationally connected with coke pushing plate (5) top below, push rod (7) and is fixed on the spring (9) of push rod (7) right-hand member, vertical with scraper bowl (4) base plate on the base plate that coke pushing plate (5) is positioned over scraper bowl (4), push rod (7) is vertical with scraper bowl (4) backboard, and left end is fixed horizontal through the through hole (8) on pushing ram (1) and scraper bowl (4) backboard and coke pushing plate (5); Push rod (7) is identical with the vertical height of block (3) width between centers scraper bowl (4) base plate that pushing ram roller rack (2) inner side is fixed to the vertical height of scraper bowl (4) base plate, mounting limit ring (10) on push rod (7) body of rod.
2. burnt device taken off automatically by a kind of pushing machine that realizes as claimed in claim 1, it is characterized in that: described push rod (7) is 2 and measure-alike, 2 through holes (8) equal with scraper bowl (4) base plate vertical range run through the thickness direction of scraper bowl (4) backboard and pushing ram (1) respectively, and 2 push rods (7) are each passed through 2 through holes (8).
3. burnt device taken off automatically by a kind of pushing machine that realizes as claimed in claim 1 or 2, it is characterized in that: described coke pushing plate (5) is all rectangle with the burnt plate of gear (6), coke pushing plate (5) is rotationally connected with the burnt plate of gear (6) below by the unidirectional hinge (11) being mounted thereon limit; The length of described push rod (7) is the difference of vertical range between the left surface of push rod right-hand member spring (9) and block (3) Contact pushing ram (1) and block (3) and spring (9) original length; When coke pushing plate (5) move to contact with scraper bowl (4) backboard time, be installed on spacing ring (10) on push rod (7) body of rod equal with the length of scraper bowl (4) base plate apart from the distance of pushing ram (1) right flank; Described scraper bowl (4) carupace width and pushing ram (1) left surface width match; Be running fit between through hole (8) on described push rod (7) and scraper bowl (4) backboard and pushing ram (1).
4. burnt device taken off automatically by a kind of pushing machine that realizes as claimed in claim 1 or 2, it is characterized in that: the bottom of described coke pushing plate (5) has trapezoidal hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510505089.1A CN105062513B (en) | 2015-08-18 | 2015-08-18 | The device of burnt operation taken off automatically by a kind of achievable pusher machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510505089.1A CN105062513B (en) | 2015-08-18 | 2015-08-18 | The device of burnt operation taken off automatically by a kind of achievable pusher machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105062513A true CN105062513A (en) | 2015-11-18 |
| CN105062513B CN105062513B (en) | 2017-03-15 |
Family
ID=54492041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510505089.1A Expired - Fee Related CN105062513B (en) | 2015-08-18 | 2015-08-18 | The device of burnt operation taken off automatically by a kind of achievable pusher machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105062513B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0959643A (en) * | 1995-08-23 | 1997-03-04 | Nippon Kasei Chem Co Ltd | Method for discharging hardly pushable coke from coke oven |
| CN201193221Y (en) * | 2008-01-18 | 2009-02-11 | 上海梅山钢铁股份有限公司 | Device for raking coke in coke oven hearth |
| CN202246545U (en) * | 2011-09-06 | 2012-05-30 | 武汉钢铁(集团)公司 | Coke scraping device of coke oven secondary coke |
| CN202717744U (en) * | 2012-06-28 | 2013-02-06 | 宝山钢铁股份有限公司 | Coke pulling device for coke oven |
| CN202849320U (en) * | 2012-08-22 | 2013-04-03 | 宣化钢铁集团有限责任公司 | Coke pulling shovel |
| CN103275737A (en) * | 2013-06-03 | 2013-09-04 | 天津新港船舶重工有限责任公司 | Coke scrabbling machine |
| CN203474711U (en) * | 2013-09-10 | 2014-03-12 | 唐山佳华煤化工有限公司 | Quick coke raking machine of coke oven |
| JP2014051609A (en) * | 2012-09-07 | 2014-03-20 | Jfe Steel Corp | Clogged coke scraper of coke oven |
| CN204848745U (en) * | 2015-08-18 | 2015-12-09 | 河北钢铁股份有限公司邯郸分公司 | Can realize automatic device of taking off burnt operation of coke pusher |
-
2015
- 2015-08-18 CN CN201510505089.1A patent/CN105062513B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0959643A (en) * | 1995-08-23 | 1997-03-04 | Nippon Kasei Chem Co Ltd | Method for discharging hardly pushable coke from coke oven |
| CN201193221Y (en) * | 2008-01-18 | 2009-02-11 | 上海梅山钢铁股份有限公司 | Device for raking coke in coke oven hearth |
| CN202246545U (en) * | 2011-09-06 | 2012-05-30 | 武汉钢铁(集团)公司 | Coke scraping device of coke oven secondary coke |
| CN202717744U (en) * | 2012-06-28 | 2013-02-06 | 宝山钢铁股份有限公司 | Coke pulling device for coke oven |
| CN202849320U (en) * | 2012-08-22 | 2013-04-03 | 宣化钢铁集团有限责任公司 | Coke pulling shovel |
| JP2014051609A (en) * | 2012-09-07 | 2014-03-20 | Jfe Steel Corp | Clogged coke scraper of coke oven |
| CN103275737A (en) * | 2013-06-03 | 2013-09-04 | 天津新港船舶重工有限责任公司 | Coke scrabbling machine |
| CN203474711U (en) * | 2013-09-10 | 2014-03-12 | 唐山佳华煤化工有限公司 | Quick coke raking machine of coke oven |
| CN204848745U (en) * | 2015-08-18 | 2015-12-09 | 河北钢铁股份有限公司邯郸分公司 | Can realize automatic device of taking off burnt operation of coke pusher |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105062513B (en) | 2017-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209341279U (en) | A kind of boiler slag remove device | |
| CN204848745U (en) | Can realize automatic device of taking off burnt operation of coke pusher | |
| CN105062513A (en) | Device capable of achieving automatic coke scraping operation of coke pusher | |
| CN110011264A (en) | A kind of high-voltage testing room conducting wire deicing device | |
| CN104949139B (en) | Thermal hardware with slag removal equipment | |
| CN209210710U (en) | A kind of automatic cleaning coke oven door device | |
| JP5956719B2 (en) | How to recover clogged coke | |
| CN202849320U (en) | Coke pulling shovel | |
| CN204434543U (en) | Coke oven drops down burnt plate automatic cleaning device | |
| CN112852452A (en) | Device for automatically cleaning coke of coke dropping plate of coke oven | |
| CN202246545U (en) | Coke scraping device of coke oven secondary coke | |
| CN106439942B (en) | A kind of barbecue apparatus convenient for soot controlling | |
| US4276121A (en) | Coke oven door spillage collection and disposal apparatus | |
| CN204237741U (en) | Pushing machine tar guiding device | |
| CN218442310U (en) | Incinerator convenient for cleaning slag | |
| CN205957250U (en) | Barbecue device convenient to oil smoke control | |
| CN201309914Y (en) | Slag removal mechanism for pyrolysis sub melting gasify furnace | |
| CN201245608Y (en) | Frame cleaning device of side-coal charging coke oven coal guide | |
| CN212644683U (en) | Dual-purpose stove of warming oneself by a fire of blue charcoal of granule of automatic decoking function in area | |
| CN219239573U (en) | Coke pushing device of coke pushing vehicle | |
| CN215022404U (en) | Medicine is concocted detoxification method and is used mild fire heating device | |
| CN213944067U (en) | Coking production is with coke oven inner wall scale removal device | |
| CN215684483U (en) | High-temperature duck roasting furnace convenient for cleaning oil stain in pipeline | |
| CN221549388U (en) | Roasting furnace with garbage collection and recycling mechanism | |
| CN215982566U (en) | Hot pin destroying device with crushing and burning integration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 232, Fuxing Road, Fuxing District, Handan, Hebei Province Patentee after: Handan Branch of Hegang Co.,Ltd. Address before: 056015 Fuxing Road 232, Hebei, Handan Patentee before: HEBEI IRON & STEEL Co.,Ltd.HANDAN BRANCH |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20210818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |