CN103374374A - Vertical involute few tooth difference-rack driven coke pushing device - Google Patents

Vertical involute few tooth difference-rack driven coke pushing device Download PDF

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Publication number
CN103374374A
CN103374374A CN2012101316854A CN201210131685A CN103374374A CN 103374374 A CN103374374 A CN 103374374A CN 2012101316854 A CN2012101316854 A CN 2012101316854A CN 201210131685 A CN201210131685 A CN 201210131685A CN 103374374 A CN103374374 A CN 103374374A
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gear
coke pushing
coke
output shaft
bearing
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CN2012101316854A
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CN103374374B (en
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吴声震
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Pizhou Xinsheng Venture Capital Co Ltd
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吴小杰
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Abstract

The invention relates to the technical field of coke pushing devices of coke ovens and provides a vertical involute few tooth difference-rack driven coke pushing device. The device comprises a coke pushing support, a supporting roll, a coke pushing rod and a transmission device, wherein the transmission device comprises a rotor shaft, eccentric bearings, planet gears, inner gear rings, an output shaft, pins and column sleeves; and the output shaft is supported in an inner hole of a vertical motor base by a bearing. The device is characterized in that a motor, the inner gear rings and the vertical motor base are connected into a whole in order; the output shaft is connected with a spline of a drive gear; a long rack is laterally installed on the inner wall of the coke pushing rod; the rack pushes the coke pushing rod to move forward when the drive gear rotates clockwise, and the coke pushing rod is moved backward when the drive gear rotates counterclockwise; the phase difference between the gears on the two sides and the middle gear is 180 degrees; and the width of the gears on the two sides is half that of the middle gear. The device has the beneficial effects that when the coke pushing rod works back and forth, the gear-rack meshing accuracy can be ensured, thus greatly reducing the impact force and vibration of the coke pushing rod; the weight is reduced by 45-60%, and the price is reduced by 50-65%; an input shaft is in the state of static balance or dynamic balance, so that the transmission is stable; and the few tooth difference structure is simple and adopts multi-tooth meshing, the bearing capacity is high, and the service life is long.

Description

Vertical involute less tooth difference-rack drives coke pusher
[technical field]
The present invention relates to the coke pusher technical field, a kind of vertical involute less tooth difference-rack drives coke pusher.
[background technology]
Coke oven factory of Baogang paper " research of 6m vibration of pushing rod of coke oven " points out: can produce vibration during the reciprocal work done of pushing ram in the coke pusher, its major cause is the distortion that " waist collapses " trend is progressively arranged after pushing ram is heated, and the 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 (units: 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., produce resonance when serious and cause that bottom brick becomes flexible, cracks, the positive displacement of jamb brick and combustion chamber string leak etc. (6m coke oven principal dimension: the long 15140mm of coking chamber, high 5650mm, average wide 450mm);
Coke pusher comprises pushing ram, coke pushing bearing and transmission mechanism: motor YZR355L110kW, n 1=582rpm, n 2=14.6rpm, pushing ram (comprising coke pushing head, crawler shoe) is bearing in above the support roll, have in the support roll three groups with the side roller to prevent the pushing ram sideslip, pushing ram is a body 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 the speed setting of coke pushing whole process to realize without impacting coke pushing.For pushing ram in the anti-incinerator that has a power failure suddenly, be provided with hand gear.
Transmission mechanism be three grades of slowing-down structure: i=2.045 * 3.962 * 4.923=39.9, pushing ram gear Z=15, the m=40 of one-level cone tooth+secondary parallel-axes gears drive tooth bar realize pushing ram advance or retreat, coke pushing speed 27.4m/min, stroke 25774mm.
[summary of the invention]
The involute less tooth difference that the object of the invention provides a kind of gear-tooth bar stable drive, pushing ram does not vibrate and, efficient low with price equates replaces the vertical involute less tooth difference of background technology-rack drives coke pusher.
Technical scheme:
(A) driving gear and output shaft make driving gear have certain amount of floating in order to sideshake and the bottom clearance of compensation with tooth bar with spending strong being slidingly connected, and long rack bar side is loaded on the pushing ram inwall.During according to paper " research of 6m vibration of pushing rod of coke oven " the reciprocal work done of pushing ram, pushing ram " waist collapses " deflection occurs up to 60mm, and its result makes gear-tooth bar sideshake and bottom clearance substantial deviation theoretical value (sideshake 3.5-5mm, bottom clearance 8-12mm): the anterior tooth bar sideshake 6.8-8mm of place of actual measurement pushing ram, bottom clearance 14.8-18mm.After the present invention will long rack bar side be loaded on the pushing ram inwall, its side dress section rigidity is far above sleeping dress section, long tooth bar deflection is descended, simultaneously according to Theoretical Calculation: establishing the tooth bar deflection is 30mm, coke pushing stroke 25774mm, then the pitch angle of tooth is 0.0012 ° only, illustrates that the sideshake of gear-tooth bar and bottom clearance still can be in theoretical value, guarantees the accuracy of mesh of gear-tooth bar, thereby gear-tooth bar stable drive greatly reduces the vibration of gear-tooth bar surging force and pushing ram;
(B) replace three grades of decelerations with the deceleration of single-stage involute less tooth difference: " the calculated example of 7-126 page or leaf on the gear handbook: efficiency eta=0.944 (two teeth difference Z d=2), the contriver is according to 100 examples, tooth difference Z d=2,3,4, calculation result draws: efficiency eta=0.934,0.96,0.97..Thereby can replace " cone tooth+secondary reducer with hardened tooth surface ".
According to background technology, its creativeness is embodied in [beneficial effect]:
(1) in the reciprocal work done of pushing ram, guarantees the gear-tooth bar accuracy of mesh, greatly reduce the vibration of surging force and pushing ram;
(2) background technology " 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%.The Theoretical Calculation data are as follows: Z b=120, Zc=117, Z d=3,28.241 °, eccentric distance e=9.60, b=25/50mmY F=3.46Z -0.137, Y ε=9.2Z -0.8" mechanical design handbook " volume 3.14-454
σ w=(Ft/bm) KaKvY FY ε≤[σ w]=163 (MPa), peripheral force Ft=2000 (T 2/ n pd 1)=102564 (N), S Bb=(σ Flim/ σ W) Y NY SY X〉=S Bbmin=1.0 (σ Flim=300, [σ W]=200MPa, Y N=1.0, Y S=1.0, Y X=0.95)
(3) breast wheel thickness is both sides uniform thickness wheel twices, 180 ° of the two phase differential, thereby the rotating mass on the input shaft is in statical equilibrium, dynamic equilibrium state, makes transmission more steady; Simple in structure, in addition few, the soft flank of tooth technique of part is simple, cost is low.
[description of drawings] Fig. 1. embodiment of the invention structural representation
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1. a kind of vertical involute less tooth difference-rack drives coke pusher, comprise coke pushing bearing 1, support roll 2, pushing ram 3 and transmission mechanism, described pushing ram 3 (comprises the coke pushing head, crawler shoe) is body structure, be bearing on the support roll 2, have in the support roll 2 three groups with the side roller to prevent pushing ram 3 sideslips, support roll 2 is connected in the bottom of coke pushing bearing 1, described transmission mechanism comprises rotor axis of electric 17 and is contained in first on the rotor spindle 17, two capacity eccentric bearings 11,14, satellite gear, ring gear 18 and output mechanism, output mechanism comprises output shaft 6, pin 10 and column sleeve, described output shaft 6 is bearing in the endoporus of vertical support 8 by two bearings 7, it is characterized in that:
Described motor, ring gear 18 and vertical support 8 are integrally togather in turn, output shaft 6 shaft extension end outer flower-keys and driving gear 4 internal splines are slidingly connected, make driving gear 4 have certain amount of floating in order to sideshake and bottom clearance between compensation and the long and narrow tooth bar 5, driving gear 4 and long tooth bar 5 engagements, when driving gear 4 turns clockwise, long tooth bar 5 promotes pushing ram 3 and moves forward, otherwise, when driving gear 4 turns counterclockwise, it is mobile backward that long tooth bar 5 promotes pushing ram 3, because long tooth bar 5 sides are loaded on pushing ram 3 inwalls and long tooth bar 5 very long (greater than the coke pushing stroke), therefore when " waist collapses " appears in pushing ram 3, the sideshake of gear-tooth bar and bottom clearance still can be in theoretical value, the inboard anchor ring upper joint of described output shaft 6 disks one dome 9 is used for covering bearing 7, purpose is to prevent that lubricating oil from entering bearing 7 and spilling from oil sealing, the identical satellite gear 13 in both sides is taken turns 180 ° of 16 phase differential with middle planetary in the described satellite gear, both sides satellite gear 13 is taken turns wide half of middle planetary wheel 16 of equaling, thereby the rotating mass on the input shaft is in statical equilibrium, dynamic equilibrium state, make transmission more steady, column sleeve 12,15 correspond respectively to satellite gear 13,16.

Claims (1)

1. vertical involute less tooth difference-rack drives coke pusher, comprise coke pushing bearing (1), support roll (2), pushing ram (3) and transmission mechanism, described pushing ram (3) (comprises the coke pushing head, crawler shoe) is body structure, be bearing on the support roll (2), have in the support roll (2) three groups with the side roller to prevent pushing ram (3) sideslip, support roll (2) is connected in the bottom of coke pushing bearing (1), described transmission mechanism comprises rotor axis of electric (17) and is contained in first on the rotor spindle (17), two capacity eccentric bearings (11,14), satellite gear, ring gear (18) and output mechanism, output mechanism comprises output shaft (6), pin (10) and column sleeve, described output shaft (6) is bearing in the endoporus of vertical support (8) by two bearings (7), it is characterized in that:
Described motor, ring gear (18) and vertical support (8) are integrally togather in turn, output shaft (6) shaft extension end outer flower-key and driving gear (4) internal spline are slidingly connected, driving gear (4) and long tooth bar (5) engagement, described long tooth bar (5) side is loaded on pushing ram (3) inwall, inboard anchor ring upper joint one dome of described output shaft (6) disk (9) is used for covering bearing (7), the identical satellite gear in both sides (13) and 180 ° of middle planetary wheel (16) phase differential in the described satellite gear, wide half that equals middle planetary and take turns (16) of both sides satellite gear (13) wheel, column sleeve (12,15) correspond respectively to satellite gear (13,16).
CN201210131685.4A 2012-04-25 2012-04-25 Vertical involute less tooth difference-rack drives coke pusher Active CN103374374B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192278A (en) * 2011-04-02 2011-09-21 吴小杰 Novel vertical type dynamic balance needle-sleeve-free cycloid reducer
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

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
CN102192278A (en) * 2011-04-02 2011-09-21 吴小杰 Novel vertical type dynamic balance needle-sleeve-free cycloid reducer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张吉国: "6米推焦机推焦传动振动成因分析", 《重工与起重技术》, no. 1, 31 December 2006 (2006-12-31) *

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