WO2011043454A1 - 装入装置 - Google Patents
装入装置 Download PDFInfo
- Publication number
- WO2011043454A1 WO2011043454A1 PCT/JP2010/067718 JP2010067718W WO2011043454A1 WO 2011043454 A1 WO2011043454 A1 WO 2011043454A1 JP 2010067718 W JP2010067718 W JP 2010067718W WO 2011043454 A1 WO2011043454 A1 WO 2011043454A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chute
- angle
- rotor
- holder
- axis
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/20—Arrangements of devices for charging
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/10—Charging directly from hoppers or shoots
Definitions
- the present invention relates to a charging device and is used as equipment for charging a charged material into a container such as a blast furnace.
- a charging device is used as equipment for charging a charged material into the furnace.
- a similar charging device is also used when filling the contents of containers such as other reaction furnaces, reaction towers, and catalyst containers.
- the charged material it is required that the charged material be in a desired state, for example, the planar distribution of the charged material in the container is made uniform.
- the charging device it is required to freely control the spraying direction and the spraying state of the charged material, and various spraying mechanisms have been developed.
- Patent Document 1 installs a cylindrical or bowl-like chute that feeds the charge, and turns the chute around a vertical swivel axis to discharge the charge discharged from the tip of the chute.
- shoot is changed by adjusting the inclination
- the device of Patent Document 2 is the same in that it controls the dispersion of the charge by turning the chute described above.
- the turning of the chute realizes the turning function not by the rotation mechanism around the turning axis but by the swinging motion of the two sets of turning mechanisms.
- two sets of chute rotation support mechanisms are installed so that their rotation axes intersect, and the drive cylinders corresponding to each direction are operated in a coordinated manner.
- Patent Document 1 described above has the following problems. It is necessary to rotate the mechanism for tilting the chute and its drive source integrally. Therefore, the structure including the turning portion becomes complicated, and the equipment cost also increases. Furthermore, maintenance inspection becomes complicated in order to maintain the turning of the complicated mechanism.
- Patent Document 2 described above has the following problems. Since the two turning mechanisms are operated in a coordinated manner, the operation control is complicated and it is difficult to increase the accuracy of the spray position.
- the main object of the present invention is to provide a charging device that can move a chute and can be easily structured and controlled.
- the charging device of the present invention includes a frame, a turning shaft set on the frame, a rotor supported by the frame and rotatable about the turning shaft, and a rotor set on the turning shaft.
- An adjustment shaft that intersects at an angle, a holder that is supported by the rotor and is rotatable about the adjustment shaft, a chute that is fixed to the holder and extends in a direction that intersects the adjustment shaft at a second angle,
- a rotation drive motor fixed to a frame to rotate the rotor relative to the frame; a transmission side bevel gear supported by the frame and rotatable about the rotation axis; and a transmission fixed to the holder
- a holder side bevel gear that meshes with the side bevel gear, and an adjustment drive motor that is fixed to the frame and rotates the holder relative to the rotor by rotating the transmission side bevel gear.
- it has a.
- the turning drive motor can be configured to rotate the rotor via a transmission path such as a gear train, and the adjustment drive motor can rotate the transmission side bevel gear via a transmission path such as a gear train.
- the turning drive motor rotates the rotor via a transmission mechanism such as a gear train, and rotates the transmission side bevel gear via a gear train including a planetary gear.
- the transmission side bevel gear may be rotated through a gear train including a planetary gear.
- the rotor is supported by the frame, the holder is supported by the rotor, and the chute is fixed to the holder.
- the angle of the chute can be changed by rotating the holder with respect to the rotor by the adjustment drive motor. That is, since the adjustment axis intersects the pivot axis at a first angle and the chute intersects the adjustment axis at a second angle, when the holder and the rotor rotate relative to each other, the chute angle relative to the pivot axis becomes It varies from the difference (minimum value) between the first angle and the second angle to the sum (maximum value) of the first angle and the second angle. As a result, the angle of the chute with respect to the frame and the rotor can be arbitrarily selected in the range from the maximum value to the minimum value described above.
- the holder-side bevel gear and the transmission-side bevel gear are always meshed even if the rotor rotates around the pivot axis, and the transmission-side bevel gear rotates around the pivot axis.
- the holder can be rotated around the adjustment shaft with respect to the rotor. Since the transmission-side bevel gear rotates around the pivot axis, the driving force can be transmitted from an adjustment drive motor fixed to the frame via a transmission path such as a gear train.
- the control for adjusting the angle of the chute differs depending on the installation form of the adjustment drive motor.
- the rotational speed of the adjustment drive motor is controlled using the rotational speed of the turning drive motor as an input value. That is, normally, by rotating the rotor and the transmission side bevel gear synchronously, the rotor, the holder, and the chute can be turned with the chute angle being constant.
- the phase of the transmission bevel gear with respect to the rotor is changed by controlling the rotation speed of the adjustment drive motor so that the rotor and the transmission bevel gear rotate at different rotation speeds. A driving force is transmitted to the tooth gear, and the holder rotates about the adjustment shaft with respect to the rotor, and as a result, the angle of the chute is changed.
- the turning drive motor may rotate the rotor, and a planetary gear may be interposed in the transmission path, and a gear train including the planetary gear may be interposed between the adjustment drive motor and the transmission side bevel gear.
- the rotor and the transmission bevel gear are synchronously rotated by the turning drive motor.
- the rotational speed of the rotor is accelerated or decelerated via the planetary gear, the phase of the transmission side bevel gear with respect to the rotor is changed, and the driving force is applied to the holder side bevel gear. Is transmitted, and the holder rotates about the adjustment shaft with respect to the rotor, and as a result, the angle of the chute is changed.
- the basic spraying operation is performed by turning the chute with the turning drive motor, and the phase of the rotor and the transmission bevel gear is adjusted with the adjustment drive motor, thereby
- the angle of the chute that is, the angle of the holder and chute with respect to the frame and the rotor can be adjusted, and the radius of spraying by turning can be adjusted.
- the control is greatly simplified.
- the rotor, the holder and its supporting structure, and the transmission path from the turning drive motor to the rotor are functionally simple, and the structure can be prevented from becoming complicated.
- the transmission path from the adjustment drive motor to the holder can also be realized with a simple configuration using the above-described bevel gear, and the complexity of the structure can be avoided.
- the first angle and the second angle are equal.
- the angle of the central axis of the chute with respect to the turning axis is from the difference (minimum value) between the first angle and the second angle to the sum (maximum value) of the first angle and the second angle. Vary between. Therefore, by making the first angle equal to the second angle, the minimum value with respect to the turning axis can be set to 0 (the central axis of the chute is directly downward in the vertical direction).
- the angle formed by the central axis of the chute and the lower inner surface of the chute is a third angle, and the sum of the first angle, the second angle, and the third angle is the maximum inclination angle required for the chute. It is desirable that it is set.
- the angle of the chute with respect to the turning axis is the sum (maximum value) of the first angle, the second angle, and the third angle from the difference (minimum value) between the first angle and the second angle. Will vary between. Therefore, the maximum value given by the sum of the first angle, the second angle, and the third angle can be set according to the maximum inclination angle required for the chute.
- middle spreading angle of the said embodiment The side view which shows turning operation
- the longitudinal cross-sectional view which shows other embodiment of this invention. The longitudinal cross-sectional view which shows other embodiment of this invention.
- a charging apparatus 1 is installed at the top of a blast furnace 2 and sprays a charge mainly composed of iron ore and coal into the furnace.
- the top of the blast furnace 2 is formed in a truncated cone shape, and a frame 3 is installed in the upper opening.
- a rotor 4 is supported on the frame 3
- a holder 5 is supported on the rotor 4
- a chute 6 is supported on the holder 5.
- the turning axis D1, the adjusting axis D2, and the chute center axis D3 are set, and the frame 3, the rotor 4, the holder 5, and the chute 6 described above are installed according to these axes.
- the turning axis D ⁇ b> 1 is an axis in the vertical direction and coincides with the central axis of the blast furnace 2.
- the adjustment axis D2 intersects the turning axis D1 at the intersection point O, and the intersecting angle with each other is the first angle A1.
- the chute center axis D3 intersects the adjustment axis D2 at the intersection point O described above, and the intersecting angle with each other is the second angle A2.
- the chute center axis D3 defines the direction in which the charge sprinkled from the chute 6 is spread into the furnace, and is usually the bottom direction of the truncated cone shape of the chute 6.
- the chute 6 is basically a truncated cone having the chute central axis D3 as the central axis and an inclination of the angle A3.
- the upper part of the base is not a part that regulates the direction in which the charge is dispersed, so the contour is changed by cutting away the conical surface so as not to interfere with the frame 3. ing.
- the distribution direction of the charge distributed from the chute 6 is the direction of the bottom surface side of the conical surface of the chute 6, that is, the direction D3 ′ of the chute bottom surface that forms an angle A3 with respect to the chute center axis D3.
- the holder 5 rotates around the adjustment axis D ⁇ b> 2 with respect to the rotor 4.
- the chute center axis D3 rotates around the adjustment axis D2 while maintaining the second angle A2 with respect to the adjustment axis D2.
- the point P at the tip opening of the chute 6 moves in a circle along the locus L2 in FIG.
- the direction of the chute center axis D3 with respect to the turning axis D1 that is, the direction with respect to the frame 3) changes, and the chute center axis D3 in FIG. It will swing to the middle left side.
- the holder 5 and the rotor 4 rotate around the turning axis D1 with respect to the frame 3. With such rotation of the rotor 4 and the holder 5, the point P at the tip of the chute 6 turns along the locus L1.
- the chute center axis D3 forms a maximum angle with respect to the turning axis D1, and the locus L1 is maximum.
- the angle of the chute center axis D3 with respect to the turning axis D1 decreases, and the locus L1 gradually increases. Get smaller. This makes it possible to adjust the swirl spray and the spray radius.
- the first angle A1 at which the turning axis D1 and the adjustment axis D2 intersect is 20 degrees, for example
- the second angle A2 at which the adjustment axis D2 and the chute center axis D3 intersect is 20 degrees, for example. That is, it is the same as the first angle A1.
- the chute center axis D3 is located at the leftmost position in FIG. 1 due to the rotation of the holder 5, the chute center axis D3 coincides with the turning axis D1, and the radius of the locus L1 becomes zero.
- each part of the frame 3, the rotor 4, the holder 5, and the chute 6 and their drive mechanisms will be described below.
- the frame 3 includes a flat cylindrical case 30, an upper surface plate 31 that covers the upper surface, and a lower surface plate 32 that covers the lower surface.
- a supply pipe 33 is installed at the center of the upper surface plate 31, and the charge supplied from the supply pipe 33 is delivered to the chute 6 and dispersed from the chute 6 into the blast furnace 2.
- An opening 34 is formed at the center of the bottom plate 32, and the rotor 4 is held in the opening 34.
- Each part of the frame 3 is formed symmetrically about the turning axis D1.
- the rotor 4 includes an upper case 41 having a cylindrical portion surrounding the outer periphery of the supply pipe 33, and a lower case 42 that is connected to the lower side of the upper case 41 and accommodates the holder 5 therein. And a mount 43 connected to the upper side of the upper case 41 and supported by a turning bearing 431.
- the upper case 41 has a disk-shaped portion 412 at the lower end of a cylindrical portion 411 that surrounds the outer periphery of the supply pipe 33.
- the cylindrical portion 411 has the central axis as the turning axis D1, while the disc-shaped portion 412 has the central axis as the adjustment axis D2.
- the outer periphery of the disk-shaped portion 412 is formed downward, and a lower flange 413 is formed on the outer periphery thereof. Of the edges of the disk-shaped part 412, the side closest to the cylindrical part 411 is cut out over a predetermined length in the circumferential direction, whereby a transmission opening 414 is formed.
- the lower case 42 includes a cylindrical main body 421, an upper flange 422 formed on the upper end thereof, and a gas seal plate 423 formed on the outer periphery of the main body 421.
- the upper flange 422 is connected to the lower flange 413 of the upper case 41 described above, thereby covering the upper opening of the main body 421 and communicating from the inside of the main body 421 to the supply pipe 33 through the upper case 41.
- the gas seal plate 423 is formed obliquely with respect to the main body 421. This inclination is set so that the central axis of the gas seal plate 423 is aligned with the turning axis D1 when the central axes of the main body 421 and the upper flange 422 are aligned with the adjustment axis D2.
- the outer shape of the gas seal plate 423 is formed in accordance with the opening 34 of the frame 3, and when the lower case 42 is accommodated in the frame 3, the gas seal plate 423 overlaps with the predetermined overlap margin over the entire circumference of the opening 34.
- packing or the like can be applied to this portion to improve the gas sealability.
- a plurality of reinforcing ribs 424 are formed on the outer peripheral surface of the main body 421 along the central axis direction of the main body 421.
- the mount 43 is connected to the upper side of the upper case 41, supported by the turning bearing 431, and rotatably supports the rotor 4 on the frame 3.
- the turning bearing 431 is fixed to the lower surface side of the upper surface plate 31 of the frame 3 around the supply pipe 33, whereby the entire rotor 4 is supported so as to be rotatable about the turning axis D1.
- the holder 5 is supported on the upper case 41 of the rotor 4.
- the holder 5 has a flat cylindrical main body 50, and an upper flange 51 and a lower flange 52 are formed around the upper and lower openings of the main body 50, and these upper flanges are formed on the outer periphery of the main body 50. Reinforcing ribs 53 connecting 51 and the lower flange 52 are formed.
- the main body 50 and the lower flange 52 have notches formed at two locations, and a receiving portion 54 through which the chute fixing pin can be inserted is formed facing the notches.
- the chute 6 is fixed to the holder 5 by introducing the chute receiving part into the receiving part 54 and inserting the chute fixing pin (see FIG. 7).
- an adjustment bearing 55 is fixed to the inside of the rotor 4 (the upper surface of the upper case 41 and the lower side of the disk-shaped portion 412 in FIG. 3), and the holder 5 is supported by this. . Thereby, the holder 5 is supported by the rotor 4 so as to be rotatable about the adjustment axis D2.
- the adjustment bearing 55 is fixed to the lower side of the upper surface of the upper case 41 (see the disk-like portion 412, FIG. 3), but may be fixed to the upper side (see FIG. 16). ).
- the chute 6 includes a cylindrical base end portion 60, a main body 61, and a connection portion 62, respectively.
- the base end portion 60 has an upper end connected to the holder 5, and a central axis coincides with the adjustment axis D ⁇ b> 2 like the holder 5.
- the main body 61 is connected to the lower end of the base end portion 60, and the central axis thereof coincides with the chute central axis D3.
- the connecting portion 62 connects the base end portion 60 and the main body 61 at a portion that is cut out because the main body 61 and the frame lower surface 34 interfere with each other.
- the proximal end 60 of the chute 6 is connected to the holder 5, and the distal end of the supply pipe 33 is introduced into the proximal end 60 by accommodating the holder 5 in the rotor 4.
- the charge is supplied from the supply pipe 33, the charge is sprayed into the blast furnace 2 from the tip through the chute 6.
- the direction of the charge when released into the blast furnace 2 is set along the direction D3 ′ of the bottom surface of the chute 6, and by adjusting the direction of the chute 6, the state of spraying into the blast furnace 2 can be changed.
- the direction of the charge discharged into the blast furnace 2 is the direction along the inner surface of the chute 6.
- the angle formed by the central axis of the chute 6 and the inner surface of the chute 6 is the third angle A3, and the sum of the first angle A1, the second angle A2, and the third angle A3 is the maximum required for the chute 6.
- the inclination angle is set (see FIG. 1).
- the charging device 1 when the charging material is sprayed from the chute 6 as described above, turns the rotor 4 or the chute 6 together so that the charging material is circled into the blast furnace 2 with a predetermined radius.
- the inclination of the chute 6 can be adjusted by rotating the rotor 4 and the holder 5 relative to each other, whereby the charging radius can be changed to spread the charge throughout the blast furnace 2.
- the charging device 1 includes a turning drive mechanism 7 that rotationally drives the rotor 4 and an adjustment drive mechanism 8 that rotationally drives the holder 5.
- a gear 71 is formed on the outer periphery of the turning bearing 431.
- a gear 72 is meshed with the gear 71, and a gear 73 is meshed with the gear 72.
- the gear 73 is driven to rotate.
- the motor 70 is rotationally driven.
- the turning drive mechanism 7 is configured by the turning drive motor 70 and the gears 71, 72, 73.
- the gear 72 can be driven to rotate by the turning drive motor 70 without using the gear 73.
- a holder-side bevel gear 81 is formed on the outer periphery of the adjustment bearing 55, and a transmission-side bevel gear 82 is meshed with the holder-side bevel gear 81.
- the transmission side bevel gear 82 is supported by an adjustment power transmission bearing 84 fixed to the frame 3 by a support member 83 extending from the lower surface of the upper surface plate 31 of the frame 3, and is rotatable about the turning axis D ⁇ b> 1.
- the holder-side bevel gear 81 rotates about the adjustment axis D2 integrally with the holder 5, but the holder-side bevel gear 81 and the transmission-side bevel gear 82 can transmit rotational force to each other by using the bevel gear. is there.
- the holder-side bevel gear 81 is housed in the rotor 4 and the transmission-side bevel gear 82 is installed outside the rotor 4. However, a transmission opening 414 is formed in the upper case 41 of the rotor 4. Therefore, mutual meshing is ensured through the transmission opening 414.
- the holder side bevel gear 81, the transmission side bevel gear 82, and the transmission opening 414 constitute the axial direction conversion mechanism 9.
- a gear 85 is formed on the outer periphery of the power transmission bearing 84 for adjustment.
- a gear 86 is meshed with the gear 85, and a gear 87 is meshed with the gear 86.
- the gear train 87 is rotated by the adjustment drive motor 80. Driven.
- These adjustment drive motor 80, holder side bevel gear 81, transmission side bevel gear 82, and gears 85, 86 and 87 constitute an adjustment drive mechanism 8.
- the gear 86 can be driven to rotate by the adjustment drive motor 80 without using the gear 87.
- FIG. 8 schematically shows driving force transmission paths of the turning drive mechanism 7 and the adjustment drive mechanism 8.
- the driving force of the turning drive motor 70 is transmitted to the gear 71 via the gears 73 and 72 to rotate the rotor 4 relative to the frame 3.
- the driving force of the adjustment drive motor 80 is transmitted to the gear 85 via the gears 87 and 86, and the transmission-side bevel gear 82 is rotated with respect to the frame 3. Transmission from the transmission side bevel gear 82 described above to the holder side bevel gear 81 causes the holder 5 to rotate with respect to the rotor 4.
- the swirl spray around the swivel axis D1 is performed by the cooperative operation of the swivel drive mechanism 7 and the adjustment drive mechanism 8 as described above. Then, by rotating the rotor 4 and the holder 5 relative to each other around the adjustment axis D2, the spraying radius of the charged material is adjusted by adjusting the spraying angle of the chute 6, and swirling spraying is repeated to form a plurality of concentric circles. Go.
- the tip P of the chute 6 in a state where the chute 6 is most inclined with respect to the turning axis D1 (angle A1 + A2), the tip P of the chute 6 is in a state farthest from the turning axis D1 (radius Rx).
- the tip P of the chute 6 turns along a locus L1 having a radius Rx.
- the turning drive mechanism 7 and the adjustment drive mechanism 8 may be synchronized, and the rotor 4 and the holder 5 may be rotated at the same speed.
- the rotation of the turning drive mechanism 7 and the adjustment drive mechanism 8 is shifted, for example, the rotational speed of the holder 5 is made slower than the rotational speed of the rotor 4 or temporarily. For example, it may be stopped. Conversely, the rotational speed of the holder 5 may be made faster than the rotational speed of the rotor 4.
- the tip P of the chute 6 is moved along the locus L2, and the inclination angle between the chute 6 and the pivot axis D1 is reduced, whereby the distance from the pivot axis D1 of the tip P of the chute 6 ( The radius Rt) is also reduced.
- the tip P of the chute 6 turns along a locus L1 having a radius Rt.
- the tip P of the chute 6 is further moved along the locus L2, and the chute 6 and the turning axis D1 are made to coincide with each other.
- the distance (radius) from the axis D1 is also zero.
- the tip P of the chute 6 turns at the position of the turning axis D1. In this way, the turning radius of the tip P of the chute 6 can be adjusted, and the charge can be distributed uniformly in the blast furnace 2 or distributed in an arbitrary distribution by spreading the charge while turning at each turning radius. Can be sprayed.
- the swivel drive mechanism 7 and the adjustment drive mechanism 8 are cooperatively operated, and the holder 5 and the rotor 4 are integrally rotated, so that the charge can be swirled and distributed.
- the inclination of the chute 6 with respect to the turning axis D1 can be arbitrarily adjusted, and the spraying radius of the charge in the blast furnace 2 can be freely adjusted. Can do.
- the adjustment of the inclination of the chute 6 is easily performed by switching the rotor 4 and the holder 5 from the synchronous rotation state to the relative rotation state by speed control of the turning drive mechanism 7 and the adjustment drive mechanism 8. be able to.
- the above-described inclination settings for the rotor 4, the holder 5, and the chute 6 (the first angle A1 between the turning axis D1 and the adjustment axis D2 and the second angle A2 between the adjustment axis D2 and the chute center axis D3). Therefore, since the inclination of the chute 6 is adjusted, it is not necessary to provide a complicated support mechanism for each rotation direction, and the configuration can be simplified. In particular, since the turning and the angle adjustment can be freely performed by the speed control of the turning drive mechanism 7 and the adjustment drive mechanism 8, various operations can be freely set by the control design in the control device.
- the present invention is not limited to the above-described embodiments, and specific configuration of each part and the like can be modified as appropriate in implementation.
- the turning drive motor 70 and the adjustment drive motor 80 are installed coaxially. However, the turning drive motor 70 and the adjustment drive motor 80 are installed on different adjacent axes. You may install in a distant position.
- the driving of the rotor 4 by the turning drive motor 70 and the driving of the holder 5 by the adjustment drive motor 80 are made independent, and a phase difference is caused in the rotation of each system by the speed control of each motor.
- a mechanism for controlling the phase difference using a planetary gear may be used.
- FIG. 15 shows another embodiment of the present invention.
- the turning drive motor 70 and the adjustment drive motor 80 are installed at different positions on the upper surface plate 31 of the case 30.
- a transmission mechanism including a gear train similar to that of the above-described embodiment of FIG. 1 is installed, and thereby, the turning drive mechanism 7 and the adjustment drive mechanism 8 are provided independently.
- the same effect as that of the embodiment of FIG. 1 described above can be obtained.
- the turning drive motor 70 and the adjustment drive motor 80 are disposed on the opposite side of the turning axis D1, the positions of these motors may be installed at arbitrary points on the circumference around the turning axis D1.
- FIG. 16 shows another embodiment of the present invention.
- the turning drive mechanism 7 and the adjustment drive mechanism 8 are related by using planetary gears.
- Gears 70A and 70B are fixed to the output shaft of the turning drive motor 70. Of these, the gear 70B is engaged with the gear 70C, and drives the gear 73 via the cylindrical shaft 70D.
- the drive path from the gear 73 to the rotor 4 is the same as that in the embodiment shown in FIG.
- the adjustment drive motor 80 is installed in parallel with the turning drive motor 70.
- a gear 80A is fixed to the output shaft of the adjustment drive motor 80, a plurality of planetary gears 80B are disposed around the gear 80A, and an internal gear 80C is meshed with each outside.
- a gear 80D is formed on the outer periphery of the annular member on which the internal gear 80C is formed, and the gear 70A described above is meshed with the gear 80D.
- the rotating shaft of the planetary gear 80B is supported by the rotating plate 80E, and the center shaft 80F is fixed to the gear 87.
- the drive path from the gear 87 to the transmission side bevel gear 82 is the same as that in the embodiment of FIG.
- the turning drive motor 70 is rotated while the adjustment drive motor 80 is stopped, whereby the turning operation of the rotor 4 by the turning drive mechanism 7 is performed, and the adjustment drive mechanism is driven by the planetary gear 80B. Rotation is transmitted to 8 and the holder 5 or chute 6 is also turned.
- the adjustment drive motor 80 is rotated, the rotation causes a phase difference between the turning operation of the rotor 4 and the turning operation of the chute 6, and the inclination angle of the chute 6 is adjusted. Also according to this embodiment, the same effect as that of the embodiment of FIG. 1 described above can be obtained.
- FIG. 17 shows another embodiment of the present invention.
- the holder side bevel gear 81 is an internal gear
- the transmission bevel gear 82 is an external gear.
- Other configurations are the same as those of the embodiment shown in FIG. Also according to this embodiment, the same effect as that of the embodiment of FIG. 1 described above can be obtained.
- the chute 6 is formed by connecting the intermediate portion 62A and the base end portion 60A.
- the central axis of the cross section of the base portion connected to the holder of the base end portion 60A coincides with the adjustment axis D2, and the chute center axis D3 passing through the center of the main body 61A intersects with the adjustment axis D2.
- the position is different from the intersection O of D1 and the adjustment axis D2.
- the maximum spray radius can be obtained at the maximum tilt angle as shown in FIG. 18, and the minimum spray radius can be obtained by setting the minimum tilt angle as shown in FIG.
- the series of the base end portion 60A, the intermediate portion 62A, and the main body 61A are so-called curved downward so that interference with the frame lower surface 34 can be avoided. Furthermore, since the base end portion 60A, the intermediate portion 62A, and the main body 61A all have a circular cross section in each part, even when the chute 6 faces various directions for adjusting the inclination, the cross-sectional shape is always circular, There is no effect on the flowing charge.
- the present invention relates to a charging device and can be used as a facility for charging a charged material into a container such as a blast furnace.
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- Vertical, Hearth, Or Arc Furnaces (AREA)
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Abstract
Description
このような装入装置においては、容器内における装入物の平面分布を均一にする等、装入物が所望の状態とすることが要求される。このために、装入装置においては、装入物の散布方向や散布状態を自由に制御することが求められ、様々な散布機構が開発されている。
シュートを傾斜させる機構やその駆動源を一体的に旋回させる必要がある。従って、旋回部分をはじめとして構造が複雑化し、設備コストも上昇する。さらに、複雑な機構の旋回を維持するために保守点検が煩雑になる。
一方、前述した特許文献2では、次のような問題がある。
二組の回動機構を協調動作させるため、動作制御が複雑になるとともに、散布位置の高精度化が難しい。
すなわち、調整軸は旋回軸に対して第1角度で交差し、シュートは調整軸に対して第2角度で交差するため、ホルダとロータとが相対回転すると、旋回軸に対するシュートの角度は、第1角度と第2角度との差(最小値)から第1角度と第2角度との和(最大値)までの間で変化する。その結果、フレームおよびロータに対するシュートの角度が前述した最大値から最小値までの範囲で任意に選択することができる。
本発明においては、調整駆動モータの設置形態に応じて、シュートの角度調整のための制御が異なる。
すなわち、通常時は、ロータと伝達側傘歯歯車とを同期回転させることで、シュートの角度が一定の状態でこれらのロータおよびホルダ、シュートを旋回させることができる。一方、調整時には、ロータと伝達側傘歯歯車が異なる回転数で回転するように、調整駆動モータの回転数を制御することで、ロータに対する伝達側傘歯歯車の位相が変更され、ホルダ側傘歯歯車に駆動力が伝達され、ロータに対してホルダが調整軸を中心に回転し、その結果シュートの角度が変更される。
このような場合、通常時は、旋回駆動モータにより、ロータと伝達側傘歯歯車とが同期回転させられる。一方、調整時には、調整駆動モータを作動させることで、遊星歯車を介してロータの回転数が加速または減速され、ロータに対する伝達側傘歯歯車の位相が変更され、ホルダ側傘歯歯車に駆動力が伝達され、ロータに対してホルダが調整軸を中心に回転し、その結果シュートの角度が変更される。
このような本発明では、基本的な旋回動作を継続しつつ、シュートの角度調整を行うことができるため、制御は非常に簡略化される。また、ロータやホルダおよびその支持構造、旋回駆動モータからロータに至る伝達経路については機能的にも単純であり、構造の複雑化を回避することができる。調整駆動モータからホルダに至る伝達経路についても、前述の傘歯歯車を利用した簡単な構成で実現することができ、構造の複雑化を回避することができる。
本発明では、前述のように、旋回軸に対するシュートの中心軸の角度は、第1角度と第2角度との差(最小値)から第1角度と第2角度との和(最大値)までの間で変化する。従って、第1角度と第2角度とを等しくすることで、旋回軸に対する最小値を0(シュートの中心軸が鉛直方向直下向き)にすることができる。
前記シュートの中心軸と前記シュートの下側内面とがなす角度を第3角度として、前記第1角度と前記第2角度と前記第3角度との和が前記シュートに要求される最大傾斜角度に設定されていることが望ましい。
本発明では、前述のように、旋回軸に対するシュートの角度は、第1角度と第2角度との差(最小値)から第1角度と第2角度と第3角度との和(最大値)までの間で変化する。従って、第1角度と第2角度と第3角度との和で与えられる最大値をシュートに要求される最大傾斜角度に応じたものに設定することができる。
図1および図2において、本実施形態の装入装置1は、高炉2の炉頂部に設置されて炉内に鉄鉱石および石炭を主体とする装入物を散布するものである。
高炉2の炉頂部は円錐台状に形成され、その上部開口にはフレーム3が設置されている。フレーム3にはロータ4が支持され、ロータ4にはホルダ5が支持され、ホルダ5にはシュート6が支持されている。
旋回軸D1は、鉛直方向の軸線であり、高炉2の中心軸線と一致する。
調整軸D2は、交点Oにおいて旋回軸D1と交差しており、互いの交差角度は第1角度A1とされている。
シュート中心軸D3は、前述した交点Oにおいて調整軸D2と交差しており、互いの交差角度は第2角度A2とされている。
本実施形態においては、シュート6は基本的にシュート中心軸D3を中心軸とし、角度A3の傾きをもった円錐台である。基部(ホルダ5に支持されている太い部分)の上側の一部分においては、装入物の散布方向を規定する部分ではないため、フレーム3と干渉しないように円錐面を切り欠いて輪郭を変更している。従って、本実施形態においてはシュート6から散布される装入物の散布方向は、シュート6の円錐面の底面側の方向、つまりシュート中心軸D3に対して角度A3をなすシュート底面の方向D3´としてよい。
このような回転により、シュート中心軸D3の旋回軸D1に対する方向(つまりフレーム3に対する方向)が変化し、図1におけるシュート中心軸D3は、図中一点鎖線で示す状態から交点Oを中心に図中左側へと振れることになる。
以上のような旋回軸D1、調整軸D2、シュート中心軸D3を基準として、以下にフレーム3、ロータ4、ホルダ5およびシュート6の各部およびこれらの駆動機構について説明する。
円盤状の部分412の外周は下向きに形成され、その外周縁には下フランジ413が形成されている。
円盤状の部分412の辺縁のうち、筒状の部分411が最も近接する側は、周方向に所定長さにわたって切り欠かれており、これにより伝達用開口414が形成されている。
上フランジ422には前述した上ケース41の下フランジ413が接続され、これにより本体421の上側開口が覆われるとともに、本体421の内部から上ケース41を経て供給管33までが連通される。
ガスシール板423の外形はフレーム3の開口34に合わせて形成され、下ケース42をフレーム3に収容した際には、ガスシール板423が開口34の全周にわたって所定の重なり代で重なるように形成されており高炉炉内のガスが炉頂挿入装置に侵入することを防いでいる。またこの部分にパッキン等を施してガスシール性を向上させることもできる。
本体421の外周面には、本体421の中心軸方向に沿って複数の補強リブ424が形成されている。
旋回用軸受431は供給管33の周囲のフレーム3の上面板31の下面側に固定され、これによりロータ4の全体が旋回軸D1を中心に回転自在に支持されている。
図6において、ホルダ5は、扁平な円筒状の本体50を有し、本体50の上下の開口の周囲には上フランジ51および下フランジ52が形成され、本体50の外周にはこれらの上フランジ51および下フランジ52を結ぶ補強リブ53が形成されている。本体50および下フランジ52は2箇所に切欠きが形成され、この切欠きに面してシュート固定用ピンを挿通可能な受け部54が形成されている。本実施形態において、シュート6は受け部54にシュート受け部を導入して、シュート固定用ピンを挿通することでホルダ5に固定される(図7参照)。
図1および図2に戻って、ロータ4の内部(図3における上ケース41上面、円盤状の部分412の下側)には調整用軸受55が固定され、これにホルダ5が支持されている。これにより、ホルダ5は、ロータ4に対して調整軸D2を中心に回転自在に支持されている。
なお、図1および図2では、調整用軸受55が上ケース41上面(円盤状部分412、図3参照)の下側に固定されているが、その上側に固定してもよい(図16参照)。
基端部60は、上端がホルダ5に接続され、中心軸がホルダ5と同様に調整軸D2に一致されている。本体61は、基端部60の下端に接続され、中心軸がシュート中心軸D3に一致されている。接続部62は、前述した本体61とフレーム下面34が干渉するために切り欠いた部分で基端部60と本体61を接続させている。
より詳しくは、高炉2内へ放出される装入物は、シュート6の底面の方向D3´に沿って先端へ送られる。従って、高炉2内へ放出される装入物の方向は、シュート6の内面に沿った方向となる。ここで、シュート6の中心軸とシュート6の内面とがなす角度を第3角度A3として、第1角度A1と第2角度A2と第3角度A3との和は、シュート6に要求される最大傾斜角度となるように設定されている(図1参照)。
このために、装入装置1は、ロータ4を回転駆動する旋回駆動機構7と、ホルダ5を回転駆動する調整駆動機構8とを備えている。
伝達側傘歯歯車82はフレーム3の上面板31の下面から延びる支持部材83により、フレーム3に固定されている調整用動力伝達軸受84に支持され、旋回軸D1を中心として回転自在である。ホルダ側傘歯歯車81はホルダ5と一体に調整軸D2まわりに回転するが、傘歯歯車とすることで、ホルダ側傘歯歯車81と伝達側傘歯歯車82は互いに回転力を伝達可能である。
これらのホルダ側傘歯歯車81と伝達側傘歯歯車82および伝達用開口414により軸方向変換機構9が構成されている。
旋回駆動機構7においては、旋回駆動モータ70の駆動力が、歯車73,72を介して歯車71に伝達され、フレーム3に対してロータ4を回転させる。
調整駆動機構8においては、調整駆動モータ80の駆動力が、歯車87,86を介して歯車85に伝達され、フレーム3に対して伝達側傘歯歯車82を回転させる。前述した伝達側傘歯歯車82からホルダ側傘歯歯車81へと伝達され、ロータ4に対してホルダ5を回転させる。
このような旋回駆動機構7および調整駆動機構8においては、各々の回転駆動が同期しており、フレーム3に対するロータ4の回転速度と伝達側傘歯歯車82の回転速度が等しい場合、前述した伝達側傘歯歯車82とホルダ側傘歯歯車81が相対回転しないため、ロータ4とホルダ5とは一体に回転し、シュート6は現在の傾斜角度のままフレーム3に対して旋回する。
シュート6の傾斜角度が変更される。すなわち、ロータ4とホルダ5との相対回転は、調整用軸受55により実現されるが、この調整用軸受55の中心である調整軸D2が旋回軸D1およびシュート6の中心軸D3の何れに対しても傾いている。このため、ロータ4とホルダ5との相対回転によりシュート6が調整軸D2廻りに振れるように回転し、これによりシュート6の傾斜角度の調整が行われる。
ロータ4およびホルダ5を一体に回転させるためには、旋回駆動機構7と調整駆動機構8とを同期させ、ロータ4およびホルダ5を同じ速度で回転させればよい。
ロータ4に対してホルダ5を相対回転させるためには、旋回駆動機構7と調整駆動機構8との同期をずらし、例えばホルダ5の回転速度をロータ4の回転速度よりも遅くする、あるいは一時的に停止させる等とすればよい。逆にホルダ5の回転速度をロータ4の回転速度よりも速くしてもよい。
このようにしてシュート6の先端Pの旋回半径を調整することができ、各旋回半径において旋回しつつ装入物を散布することで、高炉2内に均一にあるいは任意の分布で装入物を散布することができる。
本実施形態においては、シュート6の傾きの調整にあたって、旋回駆動機構7と調整駆動機構8との速度制御により、ロータ4とホルダ5とを同期回転状態から相対回転状態に切り替えることで簡単に行うことができる。
とくに、旋回駆動機構7と調整駆動機構8との速度制御で旋回および角度調整が自由に行えるため、制御装置における制御の設計により、多様な動作を自由に設定することができる。
前述した実施形態では、図1あるいは図2に示すように、旋回駆動モータ70および調整駆動モータ80を同軸に設置したが、旋回駆動モータ70および調整駆動モータ80を隣接した別の軸線で設置あるいは離れた位置に設置してもよい。また、前述した実施形態では、旋回駆動モータ70によるロータ4の駆動と調整駆動モータ80によるホルダ5の駆動を独立させ、各モータの速度制御により各系統の回転に位相差を生じさせたが、遊星歯車を用いて位相差を制御する機構であってもよい。
このような本実施形態によっても、前述した図1の実施形態と同様な効果を得ることができる。
さらに、旋回駆動モータ70および調整駆動モータ80は旋回軸D1の反対側に配置したが、これらのモータの位置は旋回軸D1を中心とした円周上の任意の点に設置してよい。
旋回駆動モータ70の出力軸には歯車70A,70Bが固定され、このうち歯車70Bは歯車70Cに噛合され、筒状のシャフト70Dを介して歯車73を駆動する。この歯車73からロータ4に至る駆動経路は前述した図1の実施形態と同様である。
調整駆動モータ80は旋回駆動モータ70と並列に設置されている。調整駆動モータ80の出力軸には歯車80Aが固定され、その周囲には複数の遊星歯車80Bが配置され、各々の外側には内歯車80Cが噛合されている。内歯車80Cが形成された環状の部材の外周には歯車80Dが形成され、この歯車80Dには前述した歯車70Aが噛合されている。遊星歯車80Bの回転軸は回転板80Eに支持され、その中心軸80Fは歯車87に固定されている。この歯車87から伝達側傘歯歯車82至る駆動経路は前述した図1の実施形態と同様である。
このような本実施形態によっても、前述した図1の実施形態と同様な効果を得ることができる。
図17には本発明の他の実施形態が示されている。本実施形態では、ホルダ側傘歯歯車81を内歯歯車、伝達側傘歯歯車82を外歯歯車としている。その他の構成は、前述した図1の実施形態と同様である。
このような本実施形態によっても、前述した図1の実施形態と同様な効果を得ることができる。
前記各実施形態では、旋回軸D1、調整軸D2およびシュート中心軸D3の3本を交点Oで互いに交叉させた。また、シュート6の本体61がフレーム下面34と干渉しないように、本体61に切り欠いたうえ接続部62で接続し、これによりシュート6の一部に凹んだ逃げ形状を形成していた。
これに対して、本実施形態では、徐々に小径となるテーパ管状の本体61Aと、ホルダ5に接続する根元部分の中心軸が調整軸D2に一致するように中心軸の角度を徐々に変更している中間部62A、基端部60Aを連結してシュート6を形成している。基端部60Aのホルダに接続する根元部分の断面の中心軸は調整軸D2に一致されており、本体61Aの中心を通るシュート中心軸D3は調整軸D2と交叉するが、その交点は旋回軸D1および調整軸D2の交点Oとは異なる位置とされている。
2…高炉
3…フレーム
4…ロータ
5…ホルダ
6…シュート
7…旋回駆動機構
8…調整駆動機構
9…軸方向変換機構
70…旋回駆動モータ
80…調整駆動モータ
81…ホルダ側傘歯歯車
82…伝達側傘歯歯車
414…伝達用開口
A1…第1角度
A2…第2角度
A3…第3角度
D1…旋回軸
D2…調整軸
D3…シュート中心軸
Claims (3)
- フレームと、前記フレームに設定された旋回軸と、前記フレームに支持されて前記旋回軸を中心に回転可能なロータと、前記ロータに設定されて前記旋回軸に第1角度で交差する調整軸と、前記ロータに支持されて前記調整軸を中心に回転可能なホルダと、前記ホルダに固定されて前記調整軸に第2角度で交差する方向へ延びるシュートと、前記フレームに固定されて前記ロータを前記フレームに対して回転させる旋回駆動モータと、前記フレームに支持されて前記旋回軸を中心に回転可能な伝達側傘歯歯車と、前記ホルダに固定されて前記伝達側傘歯歯車に噛み合うホルダ側傘歯歯車と、前記フレームに固定されて前記伝達側傘歯歯車を回転させることで前記ホルダを前記ロータに対して回転させる調整駆動モータと、を有することを特徴する装入装置。
- 請求項1に記載された装入装置において、
前記第1角度と前記第2角度とが等しいことを特徴とする装入装置。 - 請求項1または請求項2に記載された装入装置において、
前記シュートの中心軸と前記シュートの下側内面とがなす角度を第3角度として、前記第1角度と前記第2角度と前記第3角度との和が前記シュートに要求される最大傾斜角度に設定されていることを特徴する装入装置。
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JP2011535473A JP5547742B2 (ja) | 2009-10-09 | 2010-10-08 | 装入装置 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011195950A (ja) * | 2010-02-23 | 2011-10-06 | Nippon Steel Engineering Co Ltd | 装入装置およびその制御方法 |
JP2013518188A (ja) * | 2010-01-27 | 2013-05-20 | ポール ヴルス エス.エイ. | 冶金リアクター用装入装置 |
KR101304823B1 (ko) * | 2011-11-08 | 2013-09-05 | 주식회사 포스코 | 호퍼 장입장치 및 배합원료의 호퍼 장입방법 |
JP2013231225A (ja) * | 2012-05-01 | 2013-11-14 | Nippon Steel & Sumikin Engineering Co Ltd | 装入装置 |
JP2014201772A (ja) * | 2013-04-02 | 2014-10-27 | 新日鉄住金エンジニアリング株式会社 | 装入装置およびその制御方法 |
JP2015522718A (ja) * | 2012-07-18 | 2015-08-06 | ポール ヴルス エス.エイ.Paul Wurth S.A. | シャフト炉に用いる回転型充填装置 |
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LU91829B1 (en) * | 2011-06-21 | 2012-12-24 | Wurth Paul Sa | Distribution chute for a charging device |
LU92045B1 (en) | 2012-07-18 | 2014-01-20 | Wurth Paul Sa | Rotary charging device for shaft furnace |
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CN103342230B (zh) * | 2013-07-23 | 2016-03-23 | 中冶东方工程技术有限公司 | 一种旋转分料装置 |
LU92469B1 (en) * | 2014-06-06 | 2015-12-07 | Wurth Paul Sa | Gearbox assembly for a charging installation of a metallurgical reactor |
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ITUB20152684A1 (it) * | 2015-07-30 | 2017-01-30 | Danieli Off Mecc | Dispositivo di distribuzione materiale di carica all?interno di un altoforno |
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CN110317914B (zh) * | 2019-07-25 | 2021-01-19 | 德龙钢铁有限公司 | 用于废钢定点加料的高炉炉顶布料器 |
CN110487067A (zh) * | 2019-08-30 | 2019-11-22 | 杭州宏鑫钙业有限公司 | 一种立窑布料煤下料器 |
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JP2005511454A (ja) * | 2001-12-13 | 2005-04-28 | ポール ヴルス エス.エイ. | 回転式シュートを備える充填装置 |
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DE19929180C2 (de) * | 1999-06-25 | 2001-08-09 | Zimmermann & Jansen Gmbh | Beschickungsvorrichtung für einen Schachtofen |
LU90433B1 (fr) | 1999-09-03 | 2001-03-05 | Wurth Paul Sa | Dispositif de r-partition de mati-res en vrac avec goulotte rotative - angle d'inclinaison variable |
LU91577B1 (en) * | 2009-06-05 | 2010-12-06 | Wurth Paul | Device for distributing charge material in a shaftfurnace. |
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- 2010-10-08 CN CN201410228745.3A patent/CN104034173B/zh active Active
- 2010-10-08 CN CN201080032897.6A patent/CN102472578B/zh not_active Expired - Fee Related
- 2010-10-08 WO PCT/JP2010/067718 patent/WO2011043454A1/ja active Application Filing
- 2010-10-08 KR KR1020127000564A patent/KR101779470B1/ko active IP Right Grant
- 2010-10-08 BR BRPI1010065-2A patent/BRPI1010065B1/pt active IP Right Grant
- 2010-10-08 ES ES10822124.3T patent/ES2665032T3/es active Active
- 2010-10-08 EP EP10822124.3A patent/EP2487440B8/en active Active
- 2010-10-08 JP JP2011535473A patent/JP5547742B2/ja active Active
- 2010-10-08 PL PL10822124T patent/PL2487440T3/pl unknown
- 2010-10-08 US US13/377,059 patent/US8701856B2/en active Active
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JPH09508442A (ja) * | 1994-02-01 | 1997-08-26 | ポール ウァース ソシエテ アノニム | ばら材料を分配する装置 |
JP2005511454A (ja) * | 2001-12-13 | 2005-04-28 | ポール ヴルス エス.エイ. | 回転式シュートを備える充填装置 |
JP2008521723A (ja) | 2004-11-26 | 2008-06-26 | シーメンス・ファオアーイー・メタルズ・テクノロジーズ・ゲーエムベーハー・ウント・コ | 材料を炉の中に分散するための装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013518188A (ja) * | 2010-01-27 | 2013-05-20 | ポール ヴルス エス.エイ. | 冶金リアクター用装入装置 |
JP2011195950A (ja) * | 2010-02-23 | 2011-10-06 | Nippon Steel Engineering Co Ltd | 装入装置およびその制御方法 |
KR101304823B1 (ko) * | 2011-11-08 | 2013-09-05 | 주식회사 포스코 | 호퍼 장입장치 및 배합원료의 호퍼 장입방법 |
JP2013231225A (ja) * | 2012-05-01 | 2013-11-14 | Nippon Steel & Sumikin Engineering Co Ltd | 装入装置 |
JP2015522718A (ja) * | 2012-07-18 | 2015-08-06 | ポール ヴルス エス.エイ.Paul Wurth S.A. | シャフト炉に用いる回転型充填装置 |
JP2014201772A (ja) * | 2013-04-02 | 2014-10-27 | 新日鉄住金エンジニアリング株式会社 | 装入装置およびその制御方法 |
Also Published As
Publication number | Publication date |
---|---|
PL2487440T3 (pl) | 2018-07-31 |
CN102472578A (zh) | 2012-05-23 |
ES2665032T3 (es) | 2018-04-24 |
US20120181140A1 (en) | 2012-07-19 |
US8701856B2 (en) | 2014-04-22 |
KR20120066620A (ko) | 2012-06-22 |
JPWO2011043454A1 (ja) | 2013-03-04 |
CN104034173B (zh) | 2016-03-30 |
EP2487440A1 (en) | 2012-08-15 |
JP5547742B2 (ja) | 2014-07-16 |
BRPI1010065A2 (pt) | 2016-04-19 |
CN104034173A (zh) | 2014-09-10 |
BRPI1010065B1 (pt) | 2017-10-31 |
EP2487440A4 (en) | 2017-01-25 |
EP2487440B1 (en) | 2018-03-14 |
CN102472578B (zh) | 2014-07-02 |
EP2487440B8 (en) | 2018-04-18 |
KR101779470B1 (ko) | 2017-09-18 |
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