CN103374361B - Horizontal involute few tooth difference-rack driven coke pushing device - Google Patents

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

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Publication number
CN103374361B
CN103374361B CN201210131643.0A CN201210131643A CN103374361B CN 103374361 B CN103374361 B CN 103374361B CN 201210131643 A CN201210131643 A CN 201210131643A CN 103374361 B CN103374361 B CN 103374361B
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coke pushing
coke
pushing
pushing ram
rack
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CN103374361A (en
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吴声震
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Jining high tech Keda Technology Project Service 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 coking plants and provides a horizontal involute few tooth difference-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, planet gears, inner gear rings and an output mechanism. The device is characterized in that an output shaft is supported in inner holes of front and rear racks by two bearings; 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 device has a simple structure and is convenient to maintain, the weight is reduced by 45-60%, and the price is reduced by 50-65%; 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

Horizontal involute less tooth difference-rack drives coke pusher
[technical field]
The present invention relates to coke pusher technical field, a kind of horizontal involute less tooth difference-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.Adopting magnetic eddy-current brake WZ355L and hydraulic pressure block brake YWZ-400/90-10 to carry out coke pushing overall process speed regulates 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.
[summary of the invention]
Horizontal involute less tooth difference-rack drives coke pusher that when the object of the invention provides a kind of work done, gear-tooth bar stable drive, pushing ram do not vibrate and replace with the low involute less tooth difference of price.
Technological scheme:
(A) actuation gear and output shaft are with spending strong being slidably connected, make actuation gear there is the side of certain amount of floating with compensation and tooth bar, bottom clearance, long 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 with single-stage involute less tooth difference: the calculated example of " gear handbook " upper 7-126 page: efficiency eta=0.944 (two teeth difference Zd=2), inventor is according to 100 examples, tooth difference Zd=2,3,4, result of calculation draws: efficiency eta=0.934,0.96,0.97., thereby single-stage involute less tooth difference can replace background technique " cone tooth+secondary reducer with hardened tooth surface ".
[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;
(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: Z b=120, Z c=117, Z d=3,28.241 ° of working pressure angle, e=9.60, b=50mmY f=3.46Z -0.137, Y ε=9.2Z -0.8" mechanical design handbook " volume 3.14-454 σ w=(Ft/bm) KaK vy 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) Involute Small Teeth Difference Planetary Gearing advantage: few, the soft flank of tooth technique of simple in structure, another part is simple, cost is low;
[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 involute less tooth difference-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 is housing structure, 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, 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, planet wheel 16, ring gear 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 be bearing in before, rear bay 9, 13 endoporus, device is 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 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 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 ring gear 18 is connected in rear bay 13 endoporus.

Claims (1)

1. horizontal involute less tooth difference-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), described transmission device comprises rotor axis of electric (19) and is contained in the capacity eccentric bearing (17) on rotor shaft (19), planet wheel (16), ring gear (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 described, rear bay (9, 13) be fastened on speed reducer base plate (7), speed reducer base plate (7), footing (6) and coke pushing bearing (1) are integrally togather in turn, described ring gear (18) is connected in rear bay (13) endoporus.
CN201210131643.0A 2012-04-25 2012-04-25 Horizontal involute few tooth difference-rack driven coke pushing device Active CN103374361B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319750A1 (en) * 1987-12-09 1989-06-14 Manfred Dipl.-Ing. Wittenstein Low-backlash speed-reducing two-stage planetary gearing
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319750A1 (en) * 1987-12-09 1989-06-14 Manfred Dipl.-Ing. Wittenstein Low-backlash speed-reducing two-stage planetary gearing
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

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