CN104453891A - Coal mining machine and cutting part thereof - Google Patents
Coal mining machine and cutting part thereof Download PDFInfo
- Publication number
- CN104453891A CN104453891A CN201410589372.2A CN201410589372A CN104453891A CN 104453891 A CN104453891 A CN 104453891A CN 201410589372 A CN201410589372 A CN 201410589372A CN 104453891 A CN104453891 A CN 104453891A
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- China
- Prior art keywords
- winning machine
- cutting part
- ring
- wedge shape
- output shaft
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- 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.)
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- 239000003245 coal Substances 0.000 title abstract description 19
- 238000005065 mining Methods 0.000 title abstract description 8
- 230000009467 reduction Effects 0.000 claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 210000003371 toe Anatomy 0.000 claims description 37
- 230000013011 mating Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009993 protective function Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Crushing And Pulverization Processes (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides a coal mining machine and a cutting part thereof. The cutting part of the coal mining machine comprises a speed reduction transmission mechanism and a connection square head, wherein the speed reduction transmission mechanism is provided with a power output shaft; the connection square head is connected with a roller of the coal mining machine; the power output shaft is connected with the connection square head by a torque limiter; overload protection is carried out on the cutting part by the torque limiter so that the breakage possibility of a torque shaft can be reduced and the downtime caused by maintenance of the coal mining machine is shortened; and furthermore, the operation cost of the coal mining machine is reduced.
Description
Technical field
The present invention relates to coal mine machinery, more specifically, relate to a kind of coal-winning machine and cutting units thereof.
Background technology
Winning machine cutting part is that coal-winning machine is coaling the execution unit of coal breakage, namely Fig. 1 shows the sectional structure of a kind of typical winning machine cutting part in prior art, as shown in the figure, cutting units comprises: cutting motor 7 ', torque axis 8 ', reduction gearing mechanism and connection square toes (also referred to as planet square toes) 2 ', and reduction gearing mechanism comprises reduction box 6 ' and planetary reduction gear 5 '.Cutting motor 7 ' to be driven with reduction box 6 ' by torque axis 8 ' and is connected, reduction box 6 ' by power transmission to planetary reduction gear 5 ', the central axis 1 ' of the planet carrier of planetary reduction gear 5 ' be connected square toes 2 ' and pass through spline fitted, driving the cylinder of coal-winning machine to rotate by connecting square toes 2 ' again, realizing coalingging coal breakage.
Coal-winning machine, in the process of coal cutting, when cylinder cut there will be overload situations to when the higher tomography of hardness or set cap, may cause cutting motor to damage or other drive disk assemblies such as gear, bearing damage if can not implement overload protection in time.The overload protection to cutting motor and driving member is realized mainly through torque axis 8 ' in prior art; torque axis 8 ' is provided with compensating groove; when there is overload in winning machine cutting part; protectiveness fracture can be there is in torque axis 8 ' at compensating groove place; cut off the drive connection between cutting motor 7 ' and reduction box 6 ', and then the damage that cutting motor 7 ' and other driving members can be avoided to cause because of overlond running.Torque axis 8 ' can be extracted out after rupturing vertically, can resume production after then being installed by new torque axis.
But; adopt torque axis 8 ' as the overload protection part of winning machine cutting part; there is following shortcoming: when conditions down-hole is severe; in the process in cut coal seam, overload condition is more; the fracture of torque axis is comparatively frequent, and torque axis dismounting inconvenience, and the operation changing torque axis is consuming time longer; the fault power time of coal-winning machine is long, causes coal-winning machine running cost obviously to increase.
Summary of the invention
One object of the present invention is to provide one both can carry out overload protection to cutting motor and other driving members, can reduce again the winning machine cutting part of coal-winning machine running cost.Present invention also offers a kind of coal-winning machine, application has above-mentioned winning machine cutting part.
Winning machine cutting part provided by the invention, comprise reduction gearing mechanism and be connected square toes, reduction gearing mechanism has power output shaft, connects square toes and is used for being connected with the cylinder of coal-winning machine, power output shaft and be connected square toes and pass through to limit the connection of square device.
Further, limit square device for friction limit square device.
Further, square device is limit to comprise: outer ring, inner ring, the first distensible ring, the second distensible ring and torque adjustment bolt; Inner ring is arranged in outer ring, and inner ring is set on the periphery of power output shaft, and connection side's headgear is located on the periphery of outer ring; Be formed with the first wedge shape space near limit square device first end between outer ring and inner ring, and near limitting the second wedge shape space of square device second end, the first wedge shape space and the second wedge shape space all shrink from outside to inside gradually; First distensible ring embeds in the first wedge shape space, and the second distensible ring embeds in the second wedge shape space; Torque adjustment bolt passes from the first distensible ring, and is spirally connected with the second distensible ring.
Further, the shape of the first distensible ring and the mating shapes of the first wedge shape space, the shape of the second distensible ring and the mating shapes of the second wedge shape space.
Further, torque adjustment bolt is multiple, and multiple torque adjustment bolt is along the circumferential direction evenly arranged.
Further, the one end connecting square toes is spacing by the limited step be formed on power output shaft, and the other end, by the baffle limiting being arranged on Power output shaft end, baffle plate offers the hole passed through for torque adjustment bolt.
Further, be provided with the first annular boss in the middle part of the inner circumferential of outer ring, be provided with the second annular boss in the middle part of the periphery of inner ring, the first annular boss and the second annular boss are oppositely arranged; Torque adjustment bolt passes in the middle of the first annular boss and the second annular boss.
Further, reduction gearing mechanism comprises reduction box and planetary reduction gear, and power output shaft is formed by the central axis of the planet carrier of planetary reduction gear.
Further, this winning machine cutting part also comprises cutting motor, and cutting motor is connected with reduction box by torque axis, and torque axis does not arrange compensating groove.
Present invention also offers a kind of coal-winning machine, be provided with above-mentioned winning machine cutting part.
Winning machine cutting part provided by the invention, change in prior art output power axle be connected the mode of square toes by spline joint, but output power axle be connected square toes and connected by limit square device, like this, coal-winning machine is when normally working, limit square device is non-slip, and being equivalent to outputs power axle and be connected square toes is rigidly connected, and connection square toes can drive the normal cut coal seam of coal mining machine roller; When there is overload situations, limit square device skids, be equivalent to cut off the power transmission relationship connected between square toes and power output shaft, the destruction that shock loading can be avoided to cause cutting motor, drive disk assembly and torque axis, realizes the overload protection to winning machine cutting part; After load restoration is normal, limit square device can recover normal work.Under the overload protective function of limit square device; the probability that torque axis occurs to rupture on the one hand declines to a great extent; also the material and time cost that expend needed for frequent replacing torque axis has just been saved; on the other hand after force retrieve; limit square device also recovers normal use automatically; winning machine cutting part without the need to changing component, reducing the shutdown maintenance cost of coal-winning machine, thus significantly can reduce the running cost of coal-winning machine after overload occurs.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the sectional structure of the winning machine cutting part of prior art;
Fig. 2 shows the broken section structure of the winning machine cutting part that the embodiment of the present invention provides;
Fig. 3 shows in the embodiment of the present invention sectional structure limitting square device;
Fig. 4 shows in the embodiment of the present invention sectional structure limitting square device inner ring and outer ring;
Fig. 5 shows in the embodiment of the present invention sectional structure limitting square device first distensible ring.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The winning machine cutting part that the embodiment of the present invention provides, comprise reduction gearing mechanism and be connected square toes, reduction gearing mechanism has power output shaft 1, see Fig. 2, show a part (planetary reduction gear part) for reduction gearing mechanism in the winning machine cutting part that the embodiment of the present invention provides and the sectional structure being connected square toes 2.Known in conjunction with prior art, winning machine cutting part can also comprise cutting motor, torque axis, and torque axis can have overload protection function and clutch function.Reduction gearing mechanism can comprise reduction box and planetary reduction gear 5, cutting motor to be driven with the input of reduction box by torque axis and is connected, reduction box by power transmission to after planetary reduction gear 5, the central axis of the planet carrier of planetary reduction gear 5 forms the power output shaft 1 of reduction gearing mechanism, power transmission can being given and connect square toes 2, connecting square toes 2 for being connected with the cylinder of coal-winning machine.While connecting square toes 2 and power output shaft 1 coaxial linkage, cylinder is driven to do the rotation in cut coal seam.
In the present embodiment, the power output shaft 1 of reduction gearing mechanism be connected square toes 2 and connected by limit square device 3, change in prior art output power axle 1 be connected the mode of square toes 2 by spline joint, particularly, coal-winning machine is when normally working, limit square device 3 is non-slip, and being equivalent to outputs power axle 1 and is connected square toes 2 is rigidly connected, and connection square toes 2 and power output shaft 1 coaxial linkage also drive the normal cut coal seam of coal mining machine roller; When there is overload situations, limit square device 3 skids, be equivalent to cut off the power transmission relationship connected between square toes 2 and power output shaft 1, the destruction that shock loading can be avoided to cause cutting motor, drive disk assembly and torque axis, realizes the overload protection to winning machine cutting part; After load restoration is normal, limit square device 3 can recover normal work.Under the overload protective function of limit square device 3; the probability that torque axis occurs to rupture on the one hand declines to a great extent; also the material and time cost that expend needed for frequent replacing torque axis has just been saved; on the other hand after force retrieve; limit square device 3 also recovers normal use automatically; winning machine cutting part without the need to changing component, reducing the shutdown maintenance cost of coal-winning machine, thus significantly can reduce the running cost of coal-winning machine after overload occurs.
It should be noted that; owing to self can be realized by limit square device 3 for parts winning machine cutting part being carried out to overload protection in the present embodiment; torque axis just can not arrange compensating groove; only retain the clutch function of torque axis; like this; when overload appears in winning machine cutting part, torque axis not easily ruptures, and reduce further and safeguards cost needed for torque axis.
Limit square device 3 can adopt known friction limit square device, and it see this area correlation technique, can not repeat them here with power output shaft 1 and the annexation being connected square toes 2.Or limit square device 3 can adopt the structure shown in the present embodiment, limit square device 3 comprises: outer ring 31, inner ring 32, first distensible ring 33, second distensible ring 34 and torque adjustment bolt 35.
As can be seen from Fig. 2, Fig. 3 and Fig. 4, inner ring 32 is arranged in outer ring 31, and inner ring 32 is set on the periphery of power output shaft 1, connects square toes 2 and is set on the periphery of outer ring 31.Be formed with the first wedge shape space 301 near limit square device 3 first end between outer ring 31 and inner ring 32, and all shrink gradually from outside to inside near the second wedge shape space 302, first wedge shape space 301 and the second wedge shape space 302 limitting square device 3 second end.It should be noted that, direction from outside to inside refers to the direction of the axially central authorities from the end of inside and outside circle to inside and outside circle.First distensible ring 33 embeds in the first wedge shape space 301; second distensible ring 34 embeds in the second wedge shape space 302; torque adjustment bolt 35 passes from the first distensible ring 33; and be spirally connected with the second distensible ring 34; limit square device 3 can the size of transmitting torque be arranged by torque adjustment bolt 35; be limited by the torque value set by torque adjustment bolt 35 torque value allowable of square device 3, is also that limit square device 3 ensures the safeguard protection value that cutting units transmission system normally works.Be appreciated that by tightening torque adjustment bolt 35, make the first distensible ring 33 and the second distensible ring 34 close to each other while, the torque value allowable that limit square device 3 provides can be improved, to adapt to the overload protection demand of different operating mode.
Adopt this limit square device 3, when coal-winning machine works, first distensible ring 33, second distensible ring 34 makes to produce enough large frictional force between inner ring 32 and outer ring 31, transmission of torque is extremely connected square toes 2 by the frictional force of limit square device 3 by power output shaft 1, connects square toes 2 and drives cylinder to realize the coal breakage of coalingging of cutting units.When overload occurs; cut torque exceeds the torque value allowable of limit square device 3; because frictional force deficiency is skidded between inner ring 32 and outer ring 31; and then cause power output shaft 1 to occur skidding with being connected between square toes 2; now connect square toes 2 and will no longer rotate coal cutting coal breakage, cutting motor and drive disk assembly thereof obtain overload protection.When load restoration is normal, during the allowable torque value of load torque lower than limit square device 3, limit square device 3 is non-slip, and connecting square toes 2 can be rotated further, and makes cutting units recover to use.
Preferably, see Fig. 4 and Fig. 5, the shape of the first distensible ring 33 and the mating shapes of the first wedge shape space 301, the shape of the second distensible ring 34 and the mating shapes of the second wedge shape space 302, like this, when tightening torque adjustment bolt 35, the first distensible ring 33 and the second distensible ring 34 can separately along the inclined-plane reliable mobiles of wedge shape space.
Preferably, torque adjustment bolt 35 is multiple, and multiple torque adjustment bolt 35 is along the circumferential direction evenly arranged.Correspondingly, the first distensible ring 33 and the second distensible ring 34 are along the circumferential direction offered equably unthreaded hole, the screwed hole for installing torque adjustment bolt 35.By arranging multiple torque adjustment bolt 35, can ensure to limit the stable of square device 3 structure, to realize reliable overload protection to cutting units.It can also be seen that by Fig. 4, the first annular boss 36 is provided with in the middle part of the inner circumferential of outer ring 31, the second annular boss 37 is provided with in the middle part of the periphery of inner ring 32, first annular boss 36 and the second annular boss 37 are oppositely arranged, torque adjustment bolt 35 passes in the middle of the first annular boss 36 and the second annular boss 37, and the first annular boss 36 and the second annular boss 37 can play the effect of supplemental support and guiding to each torque adjustment bolt 35.
Preferably, the one end connecting square toes 2 is spacing by the limited step 10 be formed on power output shaft 1, the other end is spacing by the baffle plate 4 being arranged on power output shaft 1 end, baffle plate 4 offers the hole 41 passed through for torque adjustment bolt 35, in the axial direction play occurs to avoid connecting square toes 2.
The embodiment of the present invention additionally provides a kind of coal-winning machine, and this coal-winning machine is provided with above-mentioned winning machine cutting part.Because winning machine cutting part provided by the invention can reach above-mentioned technique effect, the coal-winning machine being provided with this winning machine cutting part also should possess corresponding technique effect, does not repeat them here.
These are only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a winning machine cutting part, it is characterized in that, comprise reduction gearing mechanism and be connected square toes (2), described reduction gearing mechanism has power output shaft (1), described connection square toes (2) are for being connected with the cylinder of coal-winning machine, and described power output shaft (1) is connected by limit square device (3) with described connection square toes (2).
2. winning machine cutting part according to claim 1, is characterized in that, described limit square device (3) is friction limit square device.
3. winning machine cutting part according to claim 1, is characterized in that,
Described limit square device (3) comprising: outer ring (31), inner ring (32), the first distensible ring (33), the second distensible ring (34) and torque adjustment bolt (35);
Described inner ring (32) is arranged in described outer ring (31), described inner ring (32) is set on the periphery of described power output shaft (1), and described connection square toes (2) are set on the periphery of described outer ring (31);
The first wedge shape space (301) near described limit square device (3) first end is formed between described outer ring (31) and described inner ring (32), and second wedge shape space (302) of close described limit square device (3) second end, described first wedge shape space (301) and described second wedge shape space (302) all shrink from outside to inside gradually;
Described first distensible ring (33) embeds in described first wedge shape space (301), and described second distensible ring (34) embeds in described second wedge shape space (302);
Described torque adjustment bolt (35) is passed from described first distensible ring (33), and is spirally connected with described second distensible ring (34).
4. winning machine cutting part according to claim 3, it is characterized in that, the shape of described first distensible ring (33) and the mating shapes of described first wedge shape space (301), the shape of described second distensible ring (34) and the mating shapes of described second wedge shape space (302).
5. winning machine cutting part according to claim 3, is characterized in that, described torque adjustment bolt (35) is for multiple, and described multiple torque adjustment bolt (35) is along the circumferential direction evenly arranged.
6. winning machine cutting part according to claim 3, it is characterized in that, one end of described connection square toes (2) is spacing by the limited step (10) be formed on described power output shaft (1), the other end is spacing by the baffle plate (4) being arranged on described power output shaft (1) end, described baffle plate (4) offers the hole (41) passed through for described torque adjustment bolt (35).
7. winning machine cutting part according to claim 3, it is characterized in that, the first annular boss (36) is provided with in the middle part of the inner circumferential of described outer ring (31), be provided with the second annular boss (37) in the middle part of the periphery of described inner ring (32), described first annular boss (36) and described second annular boss (37) are oppositely arranged; Described torque adjustment bolt (35) is passed in the middle of described first annular boss (36) and described second annular boss (37).
8. winning machine cutting part according to any one of claim 1 to 7, it is characterized in that, described reduction gearing mechanism comprises reduction box and planetary reduction gear (5), and described power output shaft (1) is formed by the central axis of the planet carrier of described planetary reduction gear (5).
9. winning machine cutting part according to claim 8, is characterized in that, also comprises cutting motor, and described cutting motor is connected with described reduction box by torque axis, and described torque axis does not arrange compensating groove.
10. a coal-winning machine, is characterized in that, is provided with the winning machine cutting part according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589372.2A CN104453891B (en) | 2014-08-18 | 2014-10-28 | Coal mining machine and cutting part thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014204715456 | 2014-08-18 | ||
| CN201420471545 | 2014-08-18 | ||
| CN201410589372.2A CN104453891B (en) | 2014-08-18 | 2014-10-28 | Coal mining machine and cutting part thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104453891A true CN104453891A (en) | 2015-03-25 |
| CN104453891B CN104453891B (en) | 2017-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410589372.2A Active CN104453891B (en) | 2014-08-18 | 2014-10-28 | Coal mining machine and cutting part thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104453891B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863583A (en) * | 2015-06-15 | 2015-08-26 | 华北科技学院 | Coal cutting device for coal mine |
| CN105422774A (en) * | 2015-11-23 | 2016-03-23 | 中国矿业大学 | Overload protecting device for transmission element of cutting part of coal mining machine |
| CN113695056A (en) * | 2021-08-09 | 2021-11-26 | 山东邦迈智能科技有限公司 | Multifunctional anchor-guard transshipment crusher |
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| DE3821319A1 (en) * | 1988-06-14 | 1989-12-21 | Dorstener Maschf Ag | Drive unit for equipment at risk of overload, such as chain-driven face equipment in underground mining |
| CN2797746Y (en) * | 2005-04-18 | 2006-07-19 | 三一重型装备有限公司 | Means for protecting tracting unit of coal mining machine |
| CN200975421Y (en) * | 2006-10-31 | 2007-11-14 | 扬动股份有限公司 | Load adjustable coupling |
| CN101111662A (en) * | 2005-01-27 | 2008-01-23 | Dbt有限公司 | Device for milling rock and other materials and method for milling rock or the like using said device |
| CN102359373A (en) * | 2011-10-27 | 2012-02-22 | 中国矿业大学 | Drum shearer cutting part |
| CN102678109A (en) * | 2012-04-26 | 2012-09-19 | 三一重型装备有限公司 | Cutting part protective device for continuous mining machine and continuous mining machine |
| CN202707981U (en) * | 2012-06-15 | 2013-01-30 | 三一重型装备有限公司 | Transmission system torque protective device and engineering machinery |
| CN103104257A (en) * | 2013-01-31 | 2013-05-15 | 三一重型装备有限公司 | Coal mining machine and travel unit overload protective device thereof |
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2014
- 2014-10-28 CN CN201410589372.2A patent/CN104453891B/en active Active
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| GB1537115A (en) * | 1975-09-19 | 1978-12-29 | Eickhoff Geb | Drum cutter or tunnelling machines for underground mining |
| DE3821319A1 (en) * | 1988-06-14 | 1989-12-21 | Dorstener Maschf Ag | Drive unit for equipment at risk of overload, such as chain-driven face equipment in underground mining |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863583A (en) * | 2015-06-15 | 2015-08-26 | 华北科技学院 | Coal cutting device for coal mine |
| CN104863583B (en) * | 2015-06-15 | 2018-06-22 | 中国矿业大学(北京) | A kind of coal mine section device for coal |
| CN105422774A (en) * | 2015-11-23 | 2016-03-23 | 中国矿业大学 | Overload protecting device for transmission element of cutting part of coal mining machine |
| CN113695056A (en) * | 2021-08-09 | 2021-11-26 | 山东邦迈智能科技有限公司 | Multifunctional anchor-guard transshipment crusher |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104453891B (en) | 2017-05-17 |
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