CN103447789A - Method for replacing roller shells of grinding rollers of vertical grinding machines - Google Patents
Method for replacing roller shells of grinding rollers of vertical grinding machines Download PDFInfo
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- CN103447789A CN103447789A CN2013102106006A CN201310210600A CN103447789A CN 103447789 A CN103447789 A CN 103447789A CN 2013102106006 A CN2013102106006 A CN 2013102106006A CN 201310210600 A CN201310210600 A CN 201310210600A CN 103447789 A CN103447789 A CN 103447789A
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- grinding roller
- roller
- hydraulic cylinder
- grinding
- upset
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000002023 wood Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 239000012467 final product Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000002283 diesel fuel Substances 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000011900 installation process Methods 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims 3
- 239000000463 material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The invention relates to a method for replacing roller shells of grinding rollers of vertical grinding machines. The method is characterized by comprising steps of firstly, detaching an access door; secondly, mounting an overturn hydraulic cylinder; thirdly, overturning an old grinding roller; fourthly, detaching the old grinding roller; fifthly, hoisting a new grinding roller; sixthly, overturning the new grinding roller; seventhly, detaching the overturn hydraulic cylinder; eighthly, restoring accessory equipment. The method has the advantages that the roller shell replacing efficiency is improved for the grinding rollers of the vertical grinding machines, the cost of spare parts is saved, and the labor intensity is reduced.
Description
Technical field
The present invention relates to a kind of replacing method, specifically the replacing method of vertical grinder grinding roller roller shell.
Background technology
The grinding roller of smelter vertical grinder comprises grinding roller rocking arm, hydraulic cylinder, hydraulic tank and the lubricated cabinet etc. of 3 auxiliary rollers and 3 home rolls and service for it.3 auxiliary rollers each with rolling bearing with for the ring packing of interior oil cavity.The purpose that designs auxiliary roller is the grinding machine before mild grinding; 3 home rolls each with a double taper ball spiral shell hold, 1 cylindrical roller bearings and for the ring packing of interior oil cavity.Each auxiliary roller and home roll have roller shell, and roller shell is by the cast steel manufacture of the hardstanding with repeating welding, hardstanding average thickness 30 mm.
The operation principle of grinding roller is auxiliary roller, and the even cloth of slag charge is flat, and its home roll effect is mainly driven under the transmission of mill coordinates the work that rolls of carrying out slag charge with mill.
The grinding roller roller shell is when work, continuous and material is rubbed, and its wear extent is larger, and larger to its applied pressure for guaranteeing quality and its hydraulic system of efficiency of grinding, therefore caused roller shell to be prone to scar, a set of method of effectively changing efficiently the grinding roller roller shell is quite important.This method solved bearing pin between rocking arm and grinding roller remove difficulty, that the new roller shell time is installed is longer, the cooling problem that waits faster of roller shell, saved time of maintenance greatly, saved manpower, physics.
Summary of the invention
The present invention is intended to overcome the defect of prior art, a kind of replacing method of high efficiency vertical grinder grinding roller roller shell is provided, solved bearing pin between rocking arm and grinding roller remove difficulty, that the new roller shell time is installed is longer, the cooling problem that waits faster of roller shell, greatly save the time of maintenance, saved manpower, physics.
The present invention is achieved in that
A kind of replacing method of vertical grinder grinding roller roller shell, is characterized in that this method comprises the steps:
Step 1: remove access door
To, to mill body by grinding roller place access door disassembling bolts, after dismounting, access door be winched to side and be convenient to the place of placing; Synchronously seal fan airduct, lubricated oil inlet and oil return pipe, protective cover, sealing shroud etc. on grinding roller are removed;
Step 2: the installation of upset hydraulic cylinder
1. upset hydraulic cylinder special hanger is installed on grinding roller, fastening good connecting bolt;
2. the upset hydraulic cylinder is installed, first the installation basis of upset hydraulic cylinder is cleared up, again the upset hydraulic cylinder is carried out to the flexible pipe connection, primer fluid cylinder pressure pump on level land, exhaust is carried out in upset hydraulic cylinder inside, the hydraulic cylinder that finally will overturn is lifted, and be arranged on grinding roller on upset hydraulic cylinder special hanger be connected;
Step 3: old grinding roller upset
1. thick rubber or the wood of 20mm on padding on mill, by the pressure release of grinding roller hydraulic system, allow grinding roller freely drop on rubber or wood;
2. using pivot pin drawing specific purpose tool that rocking arm is connected to pivot pin with grinding roller extracts;
3. eject expansion set, after unloading fastening bolt, then be screwed into and its expansion set is ejected to 15-20mm get final product with 4 bolts;
4. check and confirm that the grinding roller upset, without after jam, starts the grinding roller Hydraulic Station, again, to after the exhaust of upset hydraulic cylinder, carry out and turn over the roller operation, grinding roller is routed up;
Step 4: old grinding roller roller shell is torn open and is hung
1. clean out the grinding roller upper surface, remove the upper top cover bolt, use crane that upper cover is pulled down;
2. remove end ring, use screw mandrel to use crane to hang out bearing inner race and spacer sleeve, with film, build bearing face, prevent that foreign matter from falling into;
3. the grinding roller special hanger for hoisting is arranged on grinding roller, use the 50t crane by the grinding roller vertical lifting, 3 100t jack coordinate its Pressure gauge show value (need determine according to on-site actual situations) between 40-50MPa simultaneously, 4 cover roasting plants heat to roller shell, until, after grinding roller vertically hangs rotating shaft, winch to ground and place;
Step 5: new grinding roller roller shell lifting
1., after new grinding roller is transported to scene, the packing of dismantling, remove the oil film of machined surface in it, if any the corrosion sand papering, then with diesel oil, it cleaned up;
2. due to when vanning be the grinding roller major part towards top, therefore by its rolling, make it (in switching process, can not damage roll sleeve) greatly upside down;
3. clean out grinding roller and roller shell contact-making surface with steel brush and sander, be coated with and spread molybdenum disulphide powder;
4. new roller shell is carried out to homogeneous heating, heating main position is the vertical contact-making surface inner ring of roller shell, and 60 degree-70 degree left and right get final product;
5. with the special hanger new roller shell of slinging, leveling, slowly be inserted in grinding roller outside (attention will be fallen position);
6. return dress roller shell gland;
Step 6: new grinding roller upset
1. utilize hydraulic cylinder slowly to plough under grinding roller, coat molybdenum bisuphide and prevent sintering in axis hole, in the pivot pin load hole;
2. on padding on mill, thick rubber or the wood of 20mm, plough under grinding roller in mill, and the hydraulic cylinder that will overturn is removed;
Step 7: the dismounting of upset hydraulic cylinder
Pull down the pivot pin that connects of upset hydraulic cylinder and grinding roller upset special hanger, regain the upset hydraulic cylinder, with crane, pull down special hanger and upset hydraulic cylinder, must waggle joystick counterpressure when dismounting hydraulic cylinder flexible pipe, prevent from being difficult to next time connection;
Step 8: recover auxiliary device
Recover the affiliated facility of removing.
Replacing method according to described vertical grinder grinding roller roller shell, pad rubber or the wood that 20mm is thick described in step 3 on mill, by the pressure release of grinding roller hydraulic system, allow grinding roller freely drop on rubber or wood, its data are through the test of many times gained, can guarantee dislocation-free between bearing pin and grinding roller, be convenient to the bearing pin between drawing grinding roller and rocking arm, save time.
According to the replacing method of described vertical grinder grinding roller roller shell, in the demolishing process of the old grinding roller roller shell described in step 4, need to concentrate homogeneous heating to the grinding roller roller shell, jack pressure is enough.
Replacing method according to described vertical grinder grinding roller roller shell, in the hoisting process of the new grinding roller roller shell described in step 5, when being heated, new roller shell to keep homogeneous heating, unsuitable overheated in heating process, the 60-70 degree gets final product, in the overheated service life that can affect roller shell, be prone to slight crack, hurts mother metal; Want leveling during lifting, in order to avoid block and waste time in installation process, it is fast that whole new roller shell installation process speed is wanted, and avoids roller shell Yin Wendu to descend and gap dwindles to install and is obstructed or installs not in place.
The invention has the beneficial effects as follows: use this method in the dismounting bearing pin time and install on new grinding roller roller shell and greatly saved the engineering time, having reduced corresponding auxiliary material consumption, having reduced personnel labor intensity, making its whole work progress safer, reasonable.
The specific embodiment
A kind of replacing method of grinding roller of vertical mill roller shell, comprise dismounting and the installation of grinding roller roller shell, and this method comprises the steps:
Step 1: remove access door
To, to mill body by grinding roller place access door disassembling bolts, after dismounting, access door be winched to side and be convenient to the place of placing; Synchronously seal fan airduct, lubricated oil inlet and oil return pipe, protective cover, sealing shroud etc. on grinding roller are removed;
Step 2: the installation of upset hydraulic cylinder
1. upset hydraulic cylinder special hanger is installed on grinding roller, fastening good connecting bolt;
2. the upset hydraulic cylinder is installed, first the installation basis of upset hydraulic cylinder is cleared up, again the upset hydraulic cylinder is carried out to the flexible pipe connection, primer fluid cylinder pressure pump on level land, exhaust is carried out in upset hydraulic cylinder inside, the hydraulic cylinder that finally will overturn is lifted, and be arranged on grinding roller on upset hydraulic cylinder special hanger be connected;
Step 3: old grinding roller upset
1. will on mill, pad rubber or the wood that 20mm is thick, and by the pressure release of grinding roller hydraulic system, allow grinding roller freely drop on rubber or wood;
2. using pivot pin drawing specific purpose tool that rocking arm is connected to pivot pin with grinding roller extracts;
3. eject expansion set, after unloading fastening bolt, then be screwed into and its expansion set is ejected to 15-20mm get final product with 4 bolts;
4. check and confirm that the grinding roller upset, without after jam, starts the grinding roller Hydraulic Station, again, to after the exhaust of upset hydraulic cylinder, carry out and turn over the roller operation, grinding roller is routed up;
Step 4: old grinding roller roller shell is torn open and is hung
1. clean out the grinding roller upper surface, remove the upper top cover bolt, use crane that upper cover is pulled down;
2. remove end ring, use screw mandrel to use crane to hang out bearing inner race and spacer sleeve, with film, build bearing face, prevent that foreign matter from falling into;
3. the grinding roller special hanger for hoisting is arranged on grinding roller, use the 50t crane by the grinding roller vertical lifting, 3 100t jack coordinate its Pressure gauge show value (need determine according to on-site actual situations) between 40-50MPa simultaneously, 4 cover roasting plants heat to roller shell, until, after grinding roller vertically hangs rotating shaft, winch to ground and place;
Step 5: new grinding roller roller shell lifting
1., after new grinding roller is transported to scene, the packing of dismantling, remove the oil film of machined surface in it, if any the corrosion sand papering, then with diesel oil, it cleaned up;
2. due to when vanning be the grinding roller major part towards top, therefore by its rolling, make it (in switching process, can not damage roll sleeve) greatly upside down;
3. clean out grinding roller and roller shell contact-making surface with steel brush and sander, be coated with and spread molybdenum disulphide powder;
4. new roller shell is carried out to homogeneous heating, heating main position is the vertical contact-making surface inner ring of roller shell, and 60 degree-70 degree left and right get final product;
5. with the special hanger new roller shell of slinging, leveling, slowly be inserted in grinding roller outside (attention will be fallen position);
6. return dress roller shell gland;
Step 6: new grinding roller upset
1. utilize hydraulic cylinder slowly to plough under grinding roller, coat molybdenum bisuphide and prevent sintering in axis hole, in the pivot pin load hole;
2. on padding on mill, thick rubber or the wood of 20mm, plough under grinding roller in mill, and the hydraulic cylinder that will overturn is removed;
Step 7: the dismounting of upset hydraulic cylinder
Pull down the pivot pin that connects of upset hydraulic cylinder and grinding roller upset special hanger, regain the upset hydraulic cylinder, with crane, pull down special hanger and upset hydraulic cylinder, must waggle joystick counterpressure when dismounting hydraulic cylinder flexible pipe, prevent from being difficult to next time connection;
Step 8: recover auxiliary device
Recover the affiliated facility of removing.
The present invention adopts above-mentioned working system, on dismounting bearing pin time and the new grinding roller roller shell of installation, has greatly saved the engineering time, has reduced corresponding auxiliary material consumption, has reduced personnel labor intensity, makes its whole work progress safer, reasonable.
Claims (3)
1. the replacing method of a vertical grinder grinding roller roller shell, is characterized in that, this method comprises the steps:
Step 1: remove access door;
Step 2: the installation of upset hydraulic cylinder
1. the suspender of upset hydraulic cylinder, fastening good connecting bolt are installed on grinding roller; Described suspender comprises the horizontal suspension bracket of a middle part with hanger, and horizontal suspension bracket both sides are provided with the L shaped suspension hook be oppositely arranged;
2. the upset hydraulic cylinder is installed, first the installation basis of upset hydraulic cylinder is cleared up, again the upset hydraulic cylinder is carried out to the flexible pipe connection, primer fluid cylinder pressure pump on level land, exhaust is carried out in upset hydraulic cylinder inside, the hydraulic cylinder that finally will overturn is lifted, and be arranged on grinding roller on the upset hydraulic cylinder suspender be connected;
Step 3: old grinding roller upset
1. rubber or wood on padding on mill, by the pressure release of grinding roller hydraulic system, allow grinding roller freely drop on rubber or wood;
2. using pivot pin drawing specific purpose tool that rocking arm is connected to pivot pin with grinding roller extracts;
3. eject expansion set, after unloading fastening bolt, then be screwed into and its expansion set is ejected to 15-20mm get final product with bolt;
4. check and confirm that the grinding roller upset, without after jam, starts the grinding roller Hydraulic Station, again, to after the exhaust of upset hydraulic cylinder, carry out and turn over the roller operation, grinding roller is routed up;
Step 4: old grinding roller roller shell is torn open and is hung
1. clean out the grinding roller upper surface, remove the upper top cover bolt, use crane that upper cover is pulled down;
2. remove end ring, use screw mandrel to use crane to hang out bearing inner race and spacer sleeve, with film, build bearing face, prevent that foreign matter from falling into;
3. the grinding roller special hanger for hoisting is arranged on grinding roller, use crane by the grinding roller vertical lifting, three jack coordinate its Pressure gauge show value between 40-50MPa simultaneously, with the quadruplet roasting plant, to roller shell, heat, until, after grinding roller vertically hangs rotating shaft, winch to ground and place;
Step 5: new grinding roller roller shell lifting
1., after new grinding roller is transported to scene, the packing of dismantling, remove the oil film of machined surface in it, if any the corrosion sand papering, then with diesel oil, it cleaned up;
2. due to when vanning be the grinding roller major part towards top, therefore by its rolling, make it greatly upside down;
3. clean out grinding roller and roller shell contact-making surface with steel brush and sander, be coated with and spread molybdenum disulphide powder;
4. new roller shell is carried out to homogeneous heating, heating main position is the vertical contact-making surface inner ring of roller shell, and 60 ℃-70 ℃ get final product;
5. with the special hanger new roller shell of slinging, leveling, being inserted in the grinding roller outside and falling position slowly;
Step 6: new grinding roller upset
1. utilize hydraulic cylinder slowly to plough under grinding roller, coat molybdenum bisuphide and prevent sintering in axis hole, in the pivot pin load hole;
2. grinding roller is ploughed under in mill, the hydraulic cylinder that will overturn is removed;
Step 7: the dismounting of upset hydraulic cylinder
Pull down the pivot pin that connects of upset hydraulic cylinder and grinding roller upset special hanger, regain the upset hydraulic cylinder, with crane, pull down special hanger and upset hydraulic cylinder, must waggle joystick counterpressure when dismounting hydraulic cylinder flexible pipe, prevent from being difficult to next time connection;
Step 8: recover auxiliary device
Recover the affiliated facility of removing.
2. the replacing method of finishing mill of high-speed wire rod mill roller axle box bearing according to claim 1, is characterized in that: in the demolishing process of the old grinding roller roller shell described in step 4, need to concentrate homogeneous heating to the grinding roller roller shell, guarantee jack pressure simultaneously.
3. the replacing method of finishing mill of high-speed wire rod mill roller axle box bearing according to claim 1, it is characterized in that: in the hoisting process of the new grinding roller roller shell described in step 5, when being heated, new roller shell to keep homogeneous heating, and keep 60-70 degrees centigrade, want leveling during lifting, it is fast that whole new roller shell installation process speed is wanted, and avoids roller shell Yin Wendu to descend and gap dwindles to install and is obstructed or installs not in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210600.6A CN103447789B (en) | 2013-05-31 | 2013-05-31 | The replacing options of vertical grinder grinding roller roller shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210600.6A CN103447789B (en) | 2013-05-31 | 2013-05-31 | The replacing options of vertical grinder grinding roller roller shell |
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| Publication Number | Publication Date |
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| CN103447789A true CN103447789A (en) | 2013-12-18 |
| CN103447789B CN103447789B (en) | 2016-08-10 |
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| CN201310210600.6A Expired - Fee Related CN103447789B (en) | 2013-05-31 | 2013-05-31 | The replacing options of vertical grinder grinding roller roller shell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801942A (en) * | 2015-03-31 | 2015-07-29 | 山东钢铁股份有限公司 | Hot demounting method for roll collar of horizontal roll of rolling mill |
| CN108127333A (en) * | 2017-11-29 | 2018-06-08 | 西安航天动力机械有限公司 | A kind of turnover device for electrolytic copper foil cathode roll titanium cylinder hot assembly |
| CN110482449A (en) * | 2018-05-15 | 2019-11-22 | 上海五钢设备工程有限公司 | Blooming mill measuring cell Replacement procedure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432500A (en) * | 1981-01-08 | 1984-02-21 | Loesche Gmbh | Roll mill for milling coal |
| EP0110535A2 (en) * | 1982-11-23 | 1984-06-13 | F.L. Smidth & Co. A/S | Method of and apparatus for replacing a grinding roller in a vertical roller mill |
| CN201768610U (en) * | 2010-08-20 | 2011-03-23 | 安徽海螺川崎节能设备制造有限公司 | Vertical mill grinding roll control device |
| CN102600934A (en) * | 2012-03-23 | 2012-07-25 | 长春发电设备总厂 | Turning-out device for maintenance of milling roller of medium-speed wheeled coal mill |
| CN102962115A (en) * | 2012-11-22 | 2013-03-13 | 安徽海螺川崎节能设备制造有限公司 | Vertical grinding mill |
-
2013
- 2013-05-31 CN CN201310210600.6A patent/CN103447789B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432500A (en) * | 1981-01-08 | 1984-02-21 | Loesche Gmbh | Roll mill for milling coal |
| EP0110535A2 (en) * | 1982-11-23 | 1984-06-13 | F.L. Smidth & Co. A/S | Method of and apparatus for replacing a grinding roller in a vertical roller mill |
| CN201768610U (en) * | 2010-08-20 | 2011-03-23 | 安徽海螺川崎节能设备制造有限公司 | Vertical mill grinding roll control device |
| CN102600934A (en) * | 2012-03-23 | 2012-07-25 | 长春发电设备总厂 | Turning-out device for maintenance of milling roller of medium-speed wheeled coal mill |
| CN102962115A (en) * | 2012-11-22 | 2013-03-13 | 安徽海螺川崎节能设备制造有限公司 | Vertical grinding mill |
Non-Patent Citations (1)
| Title |
|---|
| 赵金玲等: "标准化作业在立磨检修中的应用", 《新世纪水泥导报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801942A (en) * | 2015-03-31 | 2015-07-29 | 山东钢铁股份有限公司 | Hot demounting method for roll collar of horizontal roll of rolling mill |
| CN104801942B (en) * | 2015-03-31 | 2017-04-26 | 山东钢铁股份有限公司 | Hot demounting method for roll collar of horizontal roll of rolling mill |
| CN108127333A (en) * | 2017-11-29 | 2018-06-08 | 西安航天动力机械有限公司 | A kind of turnover device for electrolytic copper foil cathode roll titanium cylinder hot assembly |
| CN110482449A (en) * | 2018-05-15 | 2019-11-22 | 上海五钢设备工程有限公司 | Blooming mill measuring cell Replacement procedure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103447789B (en) | 2016-08-10 |
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Granted publication date: 20160810 |