CN103374369B - Vertical braking torque automatically increasing cycloid-rack driven coke pushing device - Google Patents

Vertical braking torque automatically increasing cycloid-rack driven coke pushing device Download PDF

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Publication number
CN103374369B
CN103374369B CN201210131674.6A CN201210131674A CN103374369B CN 103374369 B CN103374369 B CN 103374369B CN 201210131674 A CN201210131674 A CN 201210131674A CN 103374369 B CN103374369 B CN 103374369B
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China
Prior art keywords
coke pushing
coke
bearing
type
slotted disk
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Expired - Fee Related
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CN201210131674.6A
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CN103374369A (en
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吴声震
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Guangxi Nanning Tuo Yu Technology Incubator Service Co., Ltd.
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陈伟
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Abstract

The invention relates to the technical field of coke pushing devices of coke ovens and provides a vertical braking torque automatically increasing cycloid-rack driven coke pushing device. The device comprises a coke pushing support, a supporting roll, a coke pushing rod and a transmission device, wherein a transmission component comprises a rotor shaft, eccentric bearings, cycloidal gears, a pin wheel housing and an output mechanism; and an output shaft is supported in an inner hole of a motor base. The device is characterized in that a motor, the pin wheel housing 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; a brake component comprises two V-shaped groove disk mechanisms, a friction pair and reset springs; 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, the gear-rack meshing accuracy is ensured, thus reducing vibration of the coke pushing rod; the weight is reduced by 45-60%, and the price is reduced by 50-65%; the braking torque automatically increases with the increase of drag torque; and the input shaft is in the state of static balance or dynamic balance.

Description

The vertical braking moment of coke pusher is from increasing cycloid-rack drives device
[technical field] the present invention relates to the speed reducer technical field of coke oven coke pusher, and a kind of vertical braking moment of coke pusher is from increasing cycloid-rack drives device.
Coke oven factory of [background technique] Baogang paper " research of 6m vibration of pushing rod of coke oven " points out: can produce vibration during the reciprocal work done of the pushing ram in coke pusher, its main cause is the distortion progressively having " collapse waist " 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): survey pushing ram anterior tooth bar place sideshake 6.8-7.2, 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 the burnt and Baogang in domestic Baosteel, Wuhan Iron and Steel Plant, Handan Iron and Steel Co, elder brother's steel, mountain etc., produce resonance time serious and cause bottom brick to loosen, crack, the displacement of jamb brick front and firing chamber string to 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, and pushing ram is that a housing structure is bearing in above support roll, and tooth bar is located at the top of bar.Transmission device is three grades of slowing-down structures of one-level cone tooth+secondary parallel-axes gears: i=2.045 × 3.962 × 4.923=39.9, motor YZR355L110kW, n 1=582rpm pushing ram gear Z=15, m=40 drive tooth bar realize pushing ram advance or retrogressing, coke pushing speed 27.4m/min, stroke 25774mm.
(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), the heavy 4340kg of machine, price 113930 yuan; Weight saving 45-60% of the present invention, price can reduce 50-65%.Theory calculate data are as follows: centre circle of gear pins radius R z=275, contact coefficient Y 1max=1.43, B=21/42
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 " and roll up 1.4-289 page);
(3) breast wheel thickness is both sides uniform thickness wheel twices, the two phase difference 180 °, and the rotating mass thus on input shaft is in static balancing, dynamic equilibrium state, makes transmission more steady; Cycloidal gear teeth and half imbedding needle pin can not break, and thus bearing capacity is large, and reliability is high;
(4) braking moment increases with resisting moment and automatically increases, and therefore can replace the speed that magnetic eddy-current brake WZ355L and hydraulic pressure block brake YWZ-400/90-10 carries out coke pushing overall process and regulate, to realize nothing impact coke pushing.
When [summary of the invention] the object of the invention provides a kind of work done, Rack and gear transmission steadily, pushing ram does not vibrate and the single-stage cycloidal low by price, efficiency is identical replaces the vertical braking moment of " the one-level cone tooth+secondary parallel-axes gears " of background technique from increasing cycloid-rack drives coke pusher.Technological scheme:
(A) actuation gear and output shaft are with spending strong being slidably connected, and make actuation gear have certain amount of floating in order to compensate and the sideshake of tooth bar and bottom clearance, long rack bar side is loaded on pushing ram inwall.During work done reciprocal according to paper " research of 6m vibration of pushing rod of coke oven " pushing ram, pushing ram occurs that " collapse waist " amount of deformation is 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): survey pushing ram anterior tooth bar place sideshake 6.8-8mm, bottom clearance 14.8-18mm.After long rack bar side is loaded on pushing ram inwall by the present invention, its side dress profile rigid is far above sleeping dress section, long tooth bar amount of deformation is declined, simultaneously according to theory calculate: set tooth bar amount of deformation as 30mm, coke pushing stroke 25774mm, then the tilt angle of tooth is only 0.0012 °, illustrates that the sideshake of gear-tooth bar and bottom clearance still can be in theoretical value, ensures the accuracy of mesh of gear-tooth bar, thus Rack and gear transmission is steady, greatly reduce gear-tooth bar impact force and pushing ram vibrates;
(B) with single-stage cycloidal deceleration replacement three grades deceleration: Zhu Xiaolu " Gear Transmission Design handbook " 6 pages, " gear handbook " upper 1-12 page: cycloid efficiency eta=0.9 ~ 0.98 ≈ 0.94, thus can replace " cone tooth+secondary reducer with hardened tooth surface ";
(C) two groups of steel ball V-type slot devices in brake component are that steel ball V-type groove automatic pressurizing device improves (seeing Ruan Zhongtang " mechanical stepless transmission " 90 pages): first group is made up of the steel ball between active V-type slotted disk, the driven V-type slotted disk in telophragma side and two V-type groove faces, and telophragma connects with cone dish; Second group is made up of the steel ball in the middle of telophragma opposite side initiatively V-type slotted disk, the second driven V-type slotted disk and two V-type groove faces.Working principle: during energising, first group of active V-type groove face produces positive pressure to steel ball, and its axial thrust load promotes the driven V-type slotted disk of telophragma makes friction pair be separated, and braking moment disappears, and its circumferential component drives the output shaft work done connected with second group of driven V-type slotted disk; During power-off, input shaft stop, resisting moment makes the second driven V-type groove face produce positive pressure to steel ball, and its axial thrust load makes friction pair compress, and braking moment will muchly have much.
[beneficial effect], according to background technique, its creativeness is embodied in:
(1), in the reciprocal work done of pushing ram, the guarantee gear-tooth bar accuracy of mesh, greatly reduces impact force and pushing ram vibrates;
[accompanying drawing explanation] Fig. 1. embodiment of the present invention structural representation
Fig. 2,3 is respectively steel ball and V-type groove power-off (braking), be energized (work done) time Force principle figure
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1., 2 and the vertical braking moment of 3. a kind of coke pusher from increasing cycloid-rack drives device, comprise coke pushing bearing 1, support roll 2, pushing ram 3, driving component and braking moment are from increasing part, described pushing ram 3 comprises coke pushing head, crawler shoe, pushing ram is that a housing structure is bearing on support roll 2, three groups are had with side roller to prevent pushing ram 3 sideslip in support roll 2, support roll 2 is connected in the bottom of coke pushing bearing 1, described driving component comprises input shaft 17 and is contained in first on input shaft 17, two capacity eccentric bearings 11, 14, cycloid wheel, pin wheel housing 18, needle pin 31 and output mechanism, output mechanism comprises output shaft 6, pin 10 and first, two column sleeves 12, 15, described output shaft 6 is bearing in vertical support 8 endoporus by two bearings 7, it is characterized in that:
Described placket 27, middle cylinder 30, pin wheel housing 18, vertical support 8 and coke pushing bearing 1 are integrally togather in turn, motor is connected before described placket 27, described output shaft 6 axle stretch end external splines and actuation gear 4 internal spline are slidably connected, actuation gear 4 is made to have certain amount of floating in order to the sideshake between compensation with long tooth bar 5 and bottom clearance, described actuation gear 4 engages with long tooth bar 5, described long tooth bar 5 side is loaded on pushing ram 3 inwall, when actuation gear 4 turns clockwise, long tooth bar 5 promotes pushing ram 3 and moves forward, otherwise, when actuation gear 4 turns counterclockwise, long tooth bar 5 promotes pushing ram 3 and moves backward, because long tooth bar 5 side is loaded on pushing ram 3 inwall and long tooth bar 5 very long (being greater than coke pushing stroke), therefore when " collapse waist " appears in pushing ram 3, the sideshake of gear-tooth bar and bottom clearance still can be in theoretical value, inside described output shaft 6 disk, toroidal surface connects a dome 9 to be used for covering bearing 7, object prevents from lubricant oil from entering bearing 7 to spill from oil sealing, the identical cycloid wheel in both sides 13 and middle cycloid wheel 16 phase difference 180 ° in described cycloid wheel, described both sides cycloid wheel 13 takes turns the wide half equaling middle cycloid wheel 16, thus the rotating mass on input shaft is in static balancing, dynamic equilibrium state, make transmission more steady, described first, two column sleeves 12, 15 correspond respectively to both sides cycloid wheel 13 and middle cycloid wheel 16, described needle pin 31 half is embedded in pin wheel housing 18, claiming partly to bury toothing makes needle pin have very high bending force (Zhu Xiaolu " Gear Transmission Design handbook " 828 pages),
Described braking moment is from increasing part device at placket 27 and middle cylinder 30 coupling inner chamber, and described braking moment comprises Liang ZuVXing slotted disk mechanism, friction pair and Returnning spring from increasing part, wherein:
Described friction pair comprises internal cones 28 and cone dish 29, and described internal cones 28 is connected in placket 27 endoporus, and cone dish 29 connects with telophragma 23, and the axial distance that friction pair is separated equals theoretical value;
In described Liang ZuVXing slotted disk mechanism, first group of active V-type slotted disk 25 is connected on rotor axis of electric 26, telophragma 23 side is the first driven V-type slotted disk, the first steel ball 24 is had between master and slave two V-type grooves, second driven V-type slotted disk 21 is slidably connected with the external splines axle stretch end of input shaft 17, telophragma 23 opposite side is second group initiatively has the second steel ball 22 between V-type slotted disk, two V-type grooves, and uniform steel ball quantity is equal with V-type groove number;
Described Returnning spring 20 one end is close to the end in cup type spring seat 19, the other end is close to the second driven V-type slotted disk 21 end face, Returnning spring 20 makes cone dish 29 and internal cones 28 friction pair compress, the gap of exterior edge face near input shaft 17 shaft shoulder between opening end with the second driven V-type slotted disk 21 of described cup type spring seat 19 equals the theoretical value that friction pair is separated, and described input shaft 17 bearing is bearing in middle cylinder 30 endoporus.
Braking principle: during energising, the V-type groove face of first group of connecting with rotor axis of electric 26 active V-type slotted disk 25 produces positive pressure to steel ball 24: the driven V-type slotted disk that axial thrust load promotes telophragma 23 makes friction pair be separated, and braking moment disappears; Circumference component drives and rotates work done with the input shaft 17 of the second driven V-type slotted disk 21 splined.Obvious first group of steel ball V-type slot device function is clutch, and second group of steel ball V-type slot device function is coupling; When power is off, rotor axis of electric 26 stop, resisting moment makes the V-type groove face of the second driven V-type slotted disk 21 produce positive pressure to steel ball 22, and its axial thrust load makes friction pair compress, and thus braking moment will muchly have much.

Claims (1)

1. the vertical braking moment of a coke pusher is from increasing cycloid-rack drives device, comprise coke pushing bearing (1), support roll (2), pushing ram (3), driving component and braking moment are from increasing part, described pushing ram (3) comprises coke pushing head, crawler shoe, pushing ram is that a housing structure is bearing on support roll (2), three groups are had with side roller to prevent pushing ram (3) sideslip in support roll (2), support roll (2) is connected in the bottom of coke pushing bearing (1), described driving component comprises input shaft (17) and is contained in first on input shaft (17), two capacity eccentric bearings (11, 14), cycloid wheel, pin wheel housing (18), needle pin (31) and output mechanism, output mechanism comprises output shaft (6), pin (10) and first, two column sleeves (12, 15), described output shaft (6) is bearing in vertical support (8) endoporus by two bearings (7), it is characterized in that:
Placket (27), middle cylinder (30), pin wheel housing (18), vertical support (8) and coke pushing bearing (1) are integrally togather in turn, motor is connected before described placket (27), described output shaft (6) axle stretch end external splines and actuation gear (4) internal spline are slidably connected, described actuation gear (4) engages with long tooth bar (5), described long tooth bar (5) side is loaded on pushing ram (3) inwall, inside described output shaft (6) disk, toroidal surface connects a dome (9) to be used for covering bearing (7), the identical cycloid wheel in both sides (13) and middle cycloid wheel (16) phase difference 180 ° in described cycloid wheel, the wide half equaling middle cycloid wheel (16) is taken turns in described both sides cycloid wheel (13), described first, two column sleeves (12, 15) both sides cycloid wheel (13) and middle cycloid wheel (16) is corresponded respectively to, described needle pin (31) is partly embedded in pin wheel housing (18),
Described braking moment is from increasing part device at placket (27) and middle cylinder (30) coupling inner chamber, and described braking moment comprises Liang ZuVXing slotted disk mechanism, friction pair and Returnning spring from increasing part, wherein:
Described friction pair comprises internal cones (28) and cone dish (29), described internal cones (28) is connected in placket (27) endoporus, cone dish (29) connects with telophragma (23), and the axial distance that friction pair is separated equals theoretical value;
In described Liang ZuVXing slotted disk mechanism, first group of active V-type slotted disk (25) is connected on rotor axis of electric (26), telophragma (23) side is the first driven V-type slotted disk, the first steel ball (24) is had between master and slave two V-type grooves, second driven V-type slotted disk (21) is slidably connected with the external splines axle stretch end of input shaft (17), telophragma (23) opposite side is second group initiatively has the second steel ball (22) between V-type slotted disk, two V-type grooves, and uniform steel ball quantity is equal with V-type groove number;
Described Returnning spring (20) one end is close to cup type spring seat (19) the interior end, the other end is close to the second driven V-type slotted disk (21) end face, Returnning spring (20) makes cone dish (29) and internal cones (28) friction pair compress, the gap of exterior edge face near input shaft (17) shaft shoulder between opening end with the second driven V-type slotted disk (21) of described cup type spring seat (19) equals the theoretical value that friction pair is separated, and described input shaft (17) bearing is bearing in middle cylinder (30) endoporus.
CN201210131674.6A 2012-04-25 2012-04-25 Vertical braking torque automatically increasing cycloid-rack driven coke pushing device Expired - Fee Related CN103374369B (en)

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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

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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

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