CN103374371B - Horizontal cycloid-rack driven coke pushing device - Google Patents

Horizontal cycloid-rack driven coke pushing device Download PDF

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Publication number
CN103374371B
CN103374371B CN201210131681.6A CN201210131681A CN103374371B CN 103374371 B CN103374371 B CN 103374371B CN 201210131681 A CN201210131681 A CN 201210131681A CN 103374371 B CN103374371 B CN 103374371B
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coke pushing
coke
pushing
pushing ram
bearing
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CN201210131681.6A
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CN103374371A (en
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吴声震
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Zhou Fenlan
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吴小杰
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Abstract

The invention relates to the technical field of coke pushing devices of coking plants and provides a horizontal cycloid-rack driven coke pushing device. The device comprises a coke pushing support, a supporting roll, coke pushing rods and a transmission device comprising a rotor shaft, eccentric bearings, cycloidal gears, inner cycloidal gear rings and an output mechanism. The device is characterized in that the two ends of an output shaft are supported in inner holes of front and rear racks by two bearings respectively; a drive gear between the two bearings is connected with the output shaft by a spline; the cross section of a long rack meshed with the drive gear is shaped like a Chinese character tu; the long rack is arranged in corresponding long grooves of the coke pushing rods; upper edge surfaces of the two sides of the long grooves limit the two shoulders shaped like a Chinese character tu of the rack; and the rack pushes the coke pushing rods to move forward when the drive gear rotates clockwise, and the coke pushing rods are moved backward when the drive gear rotates counterclockwise. The device has the beneficial effects that when the coke pushing rods work back and forth, the gear-rack meshing accuracy can be ensured, thus reducing vibration of the coke pushing rods; the weight is reduced by 45-60%, and the price can be reduced by 50-65%; and the bearing capacity and the reliability are high.

Description

Horizontal cycloid-rack drives coke pusher
[technical field]
The present invention relates to coke oven coke pusher technical field, a kind of horizontal cycloid-rack drives coke pusher.
[background technique]
Coke oven factory of Baogang paper " research of 6m vibration of pushing rod of coke oven " points out: when the reciprocal work done of pushing ram in coke pusher, can produce vibration, its main cause is the distortion that progressively has " waist collapses " trend after pushing ram is heated, and pushing ram distortion makes gear-tooth bar sideshake and bottom clearance substantial deviation theoretical value (sideshake 3.5-5, bottom clearance 8-12): the anterior tooth bar sideshake 6.8-7.2 of place of actual measurement pushing ram, bottom clearance 14.8; Middle part sideshake 7.5-7.8, bottom clearance 18; Rear portion sideshake 7.6-8, bottom clearance 17.2 (unit: mm).
Vibrating in various degree all appears in the 6m coke oven coke-pusher bar of domestic Baosteel, Wuhan Iron and Steel Plant, Handan Iron and Steel Co, elder brother's steel, mountain Jiao and Baogang etc., when serious, produce resonance and cause that bottom brick becomes flexible, cracks, the positive displacement of jamb brick and firing chamber string leak etc. (6m coke oven key dimension: the long 15140mm of carbonization chamber, high 5650mm, average wide 450mm);
Coke pusher comprises pushing ram, coke pushing bearing and transmission device: motor YZR355L110kW, n 1=582rpm, n 2=14.6rpm, pushing ram (comprising coke pushing head, crawler shoe) is bearing in above support roll, in support roll, have three groups with side roller to prevent pushing ram sideslip, pushing ram is a housing structure, tooth bar is located at the top of bar, in pushing ram enters stove after, in order to support pushing ram, be provided with crawler shoe, its bottom height is adjustable.Adopt magnetic eddy-current brake WZ355L and hydraulic pressure block brake YWZ-400/90-10 to carry out coke pushing overall process speed and regulate, to realize without impacting coke pushing.For pushing ram in the incinerator that prevents from having a power failure suddenly, be provided with manual operating device.
Transmission device is " cone tooth+secondary reducer with hardened tooth surface " three grades of decelerations: i=2.045 × 3.962 × 4.923=39.9 gear-tooth bar (m=40), realize pushing ram forward and back, coke pushing speed 27.4m/min, stroke 25770mm.
(2) background technique " cone tooth+secondary reducer with hardened tooth surface " (bearing capacity 72000Nm) is suitable with DCY-500 type reducer with hardened tooth surface (seeing JB/T9002-1999), 113930 yuan of the heavy 4340kg of machine, prices; Weight saving 45-60% of the present invention, price can reduce 50-65%.Theoretical calculated data is as follows: ring gear Pitch radius R z=275, contact coefficient Y 1max=0.953, B=28
Contact stress σ jmax=(8914/R z) { Y 1maxt 2/ B} 0.5=1605 (MPa)
Allowable contact stress [σ h]=1617 (MPa) (HB600-600) (see Xu Hao " mechanical design handbook " volume 1.4-289 page);
(3) cycloidal gear teeth and hypocycloidal tooth can not break, thereby bearing capacity is large, and reliability is high.
When [summary of the invention] the object of the invention provides a kind of work done, gear-tooth bar stable drive, pushing ram do not vibrate and horizontal cycloid-rack drives coke pusher low by price, that the identical single-stage double cycloid of efficiency replaces background technique.
Technological scheme:
(A) actuation gear and output shaft are with spending strong being slidably connected, make actuation gear there is sideshake and the bottom clearance of certain amount of floating in order to compensation and tooth bar, long and narrow tooth bar is placed in the corresponding elongated slot of pushing ram, Spielpassung, tooth bar bottom supporting is in slide roller, slide roller is connected in pushing ram bottom, therefore in the reciprocal work done of pushing ram, in the time there is " waist collapses " distortion in pushing ram, because tooth bar is not to be fixed on pushing ram to make tooth bar can not produce moderate finite deformation, the sideshake of gear-tooth bar and bottom clearance are still in theoretical value, ensure the accuracy of mesh of gear-tooth bar, the steady transmission of gear-tooth bar, greatly reduce gear-tooth bar impact force and pushing ram vibration.
(B) slow down and replace 6 pages of three grades of deceleration: Zhu Xiaolu " Gear Transmission Design handbook ", " gear handbook " upper 1-12 page: cycloid efficiency eta=0.9~0.98 ≈ 0.94 by single-stage double cycloid, thereby can replace background technique " cone tooth+secondary reducer with hardened tooth surface ".
Because hypocycloid gear ring in double cycloid engagement pair and external tooth cycloid wheel are that pure rolling mesh and lubricating status are good, therefore under input power same case, the cycloidal-pin wheel that double cycloid engagement pair compares, bearing capacity approximately improves 50% (15 pages of Shen Peiji " cycloidal equidistance curve gear driving pair and device thereof "), but consider the machining accuracy of hypocycloid gear ring, by improving, 1/3rd calculating are more reasonable.Hypocycloid gear ring replaces the pinwheel being made up of pin wheel housing, pin tooth and pin gear sleeve, and simple in structure, another part is few, and maximum deceleration needn't be taken out tooth than 143 o'clock.
[beneficial effect], according to background technique, its creativeness is embodied in:
(1) in the reciprocal work done of pushing ram, ensure the gear-tooth bar accuracy of mesh, greatly reduce impact force and pushing ram vibration;
[brief description of the drawings] Fig. 1. embodiment of the present invention structural representation
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1. a kind of horizontal cycloid-rack drives coke pusher, comprise coke pushing bearing 1, support roll 2, pushing ram 3 and transmission device, described pushing ram 3 comprises coke pushing head, crawler shoe, described pushing ram (3) is bearing on support roll 2 for housing structure, in support roll 2, have three groups with side roller to prevent pushing ram 3 sideslips, described support roll 2 is connected in the bottom of coke pushing bearing 1, described transmission device comprises rotor axis of electric 19 and is contained in the capacity eccentric bearing 17 on rotor shaft 19, cycloid wheel 16, hypocycloid gear ring (18) and pin axle type output mechanism, pin axle type output mechanism comprises output shaft 11, pin 14 and post 15, it is characterized in that:
Described output shaft 11 two ends use respectively first, two bearings 10, 12 be bearing in before, rear bay 9, 13 endoporus, first, two bearings 10, actuation gear 8 between 12 is slidably connected with output shaft 11 use splines, make actuation gear 8 there is certain amount of floating in order to sideshake and bottom clearance between compensation and long tooth bar 5, actuation gear 8 engages with long tooth bar 5, the actuation gear of background technique cantilever arrangement 8 is improved to freely supported structure and has improved the accuracy of mesh of gear-tooth bar, described long tooth bar 5 transverse section are " protruding ", shape, be placed in the corresponding elongated slot of pushing ram 3, Spielpassung, two shoulders that long and narrow tooth bar 5 " protruding " shape is faced on the upper edge of elongated slot bi-side carry out spacing, upper along gapped between face and " protruding " shape two shoulders, long tooth bar 5 bottom supportings are in slide roller 4, slide roller 4 is connected in pushing ram 3, before described, rear bay 9, 13 are fastened on speed reducer base plate 7, described speed reducer base plate 7, footing 6 and coke pushing bearing 1 are integrally togather in turn, its working principle is: when actuation gear 8 turns clockwise, long tooth bar 5 promotes pushing ram 3 and moves forward, otherwise, when actuation gear 8 turns counterclockwise, long tooth bar 5 promotes pushing ram 3 and moves backward, because long tooth bar 5 is not to be fixed on pushing ram 3, therefore in the time there is " waist collapses " in pushing ram 3, the sideshake of gear-tooth bar and bottom clearance still can be in theoretical values, described hypocycloid gear ring 18 is connected in rear bay 13 endoporus.

Claims (1)

1. horizontal cycloid-rack drives coke pusher, comprise coke pushing bearing (1), support roll (2), pushing ram (3) and transmission device, described pushing ram (3) comprises coke pushing head, crawler shoe, described pushing ram (3) is bearing on support roll (2) for housing structure, in support roll (2), have three groups with side roller to prevent pushing ram (3) sideslip, support roll (2) is connected in the bottom of coke pushing bearing (1), transmission device comprises rotor axis of electric (19) and is contained in the capacity eccentric bearing (17) on rotor shaft (19), cycloid wheel (16), hypocycloid gear ring (18) and output mechanism, output mechanism comprises output shaft (11), pin (14) and column sleeve (15), it is characterized in that: described output shaft (11) two ends use respectively first, two bearings (10, 12) before being bearing in, rear bay (9, 13) endoporus, device is first, two bearings (10, 12) actuation gear (8) between is slidably connected with spline with output shaft (11), actuation gear (8) engages with long tooth bar (5), described long tooth bar (5) transverse section is " protruding " shape, be placed in the corresponding elongated slot of pushing ram (3), Spielpassung, two shoulders that long tooth bar (5) " protruding " shape is faced on the upper edge of dependence elongated slot bi-side carry out spacing, upper along gapped between face and " protruding " shape two shoulders, long tooth bar (5) bottom supporting is in slide roller (4), slide roller (4) is connected in pushing ram (3), before, rear bay (9, 13) be fastened on speed reducer base plate (7), described speed reducer base plate (7), footing (6) and coke pushing bearing (1) are integrally togather in turn, hypocycloid gear ring (18) is connected in rear bay (13) endoporus.
CN201210131681.6A 2012-04-25 2012-04-25 Horizontal cycloid-rack driven coke pushing device Active CN103374371B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102250631A (en) * 2010-05-18 2011-11-23 上海梅山钢铁股份有限公司 Sliding shoe of pushing ram
CN102305271A (en) * 2011-03-01 2012-01-04 吴小杰 High-bearing capacity braking three-cycloidal gear speed reducer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08270738A (en) * 1995-03-27 1996-10-15 Hino Motors Ltd Gear device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102250631A (en) * 2010-05-18 2011-11-23 上海梅山钢铁股份有限公司 Sliding shoe of pushing ram
CN102305271A (en) * 2011-03-01 2012-01-04 吴小杰 High-bearing capacity braking three-cycloidal gear speed reducer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平8-270738A 1996.10.15

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