CN102676184A - Horizontal braking torque self-increased cycloid-rack coke pushing device - Google Patents

Horizontal braking torque self-increased cycloid-rack coke pushing device Download PDF

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Publication number
CN102676184A
CN102676184A CN2012101412870A CN201210141287A CN102676184A CN 102676184 A CN102676184 A CN 102676184A CN 2012101412870 A CN2012101412870 A CN 2012101412870A CN 201210141287 A CN201210141287 A CN 201210141287A CN 102676184 A CN102676184 A CN 102676184A
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coke pushing
bearing
rack
type
coke
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CN2012101412870A
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CN102676184B (en
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吴声震
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Jiangsu Tailong Decelerator Machinery 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, in particular to a horizontal braking torque self-increased cycloid-rack driving coke pushing device. The horizontal braking torque self-increased cycloid-rack driving coke pushing device comprises a coke pushing support, a supporting roll, a coke pushing rod and a braking-torque self-increased transmission device, wherein the transmission device comprises a rotor shaft, eccentric bearings, a cycloidal wheel, an inner cycloidal gear ring and an output mechanism. The horizontal braking torque self-increased cycloid-rack driving coke pushing device is characterized in that the output shaft is supported into inner holes of a front frame and a rear frame by using the bearings; the cross section of a long rack meshed with a driving gear is convex and the long rack is arranged in a corresponding long groove of the coke pushing rod; the two convex shoulders of the rack are limited by the upper edge surfaces of the two side surfaces of the long groove; when the driving gear rotates clockwise, the coke pushing rod moves forwards, otherwise the coke pushing rod moves backwards; the phase difference between two side wheels and a middle wheel is 180 degrees, and the widths of the two side wheels are equal to a half of that of the middle wheel; and the braking piece comprises two groups of V-shaped groove disc mechanisms, a friction pair and a reset spring. The horizontal braking torque self-increased cycloid-rack driving coke pushing device has the beneficial effects that the gear-rack meshing accuracy is good, and the vibration of the coke pushing rod is reduced; the weight is reduced by 45-60%, and the price can be reduced by 50%-65%; the braking torque is automatically increased along with the increase of the resisting moment; and an input shaft is in static and dynamic balance.

Description

Horizontal braking moment is from increasing cycloid-tooth bar coke pusher
[technical field]
The present invention relates to pit kiln coke pusher technical field, a kind of horizontal braking moment is from increasing cycloid-tooth bar coke pusher.
[background technology]
Coke oven factory of Baogang paper " 6m coke oven coke-pusher bar Research on Vibration " is pointed out: can produce vibration during the reciprocal work done of the 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 or the like (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 on the support roll, has three groups to have the side roller to prevent the pushing ram sideslip in the support roll; Coke pushing leverage body structure; Tooth bar is located at the top of bar, after in the pushing ram entering stove, 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 the not having coke pushing of impact.For pushing ram in the incinerator that prevents to have a power failure suddenly, be provided with hand gear.
Transmission mechanism is that three grades of slowing-down structure: i=2.045 * 3.962 * 4.923=39.9, driving gear (Z=15, the m=40)-tooth bar of one-level awl tooth+secondary parallel-axes gears realized pushing ram forward and back, coke pushing speed 27.4m/min, stroke 25774mm.
[summary of the invention]
The horizontal braking moment that gear-rack gear steadily when the object of the invention provided a kind of work done, pushing ram does not vibrate and the single-stage cycloidal low with price, that mechanical efficiency is identical replaces background technology is from increasing cycloid-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 tooth bar places the corresponding elongated slot of pushing ram; Running fit, tooth bar bottom supporting are on slide roller, and slide roller is connected in the pushing ram; Therefore in the reciprocal work done of pushing ram; When " waist collapses " distortion appearred in pushing ram, owing to tooth bar is not to be fixed on to make tooth bar can not produce moderate finite deformation on the pushing ram, the sideshake of gear-tooth bar and bottom clearance still were in theoretical value; The steady transmission of gear-tooth bar greatly reduces the vibration of gear-tooth bar surging force and pushing ram.
(B) replace three grades of deceleration: Zhu Xiaolu " 6 pages of Gear Transmission Design handbook, " 1-12 page or leaf on the gear handbook: cycloid efficiency eta=0.9~0.98 ≈ 0.94, thereby instead " the hard flank of tooth speed reduction unit of awl tooth+secondary " with the deceleration of single-stage three-chip type double cycloid.
Because hypocycloid gear ring and external tooth Cycloidal Wheel are that pure rolling engagement and lubricating status are good in the double cycloid Meshing Pair; Therefore under the power input same case; The cycloidal-pin wheel that the double cycloid Meshing Pair compares; Supporting capacity improves 50% (15 pages of Shen Peiji " cycloidal equidistance curve gear driving pair and device thereof ") approximately, but considers the working accuracy of hypocycloid gear ring, and 1/3rd calculating are more reasonable by improving.The hypocycloid gear ring replaces the pinwheel that is made up of pin wheel housing, pin tooth and pin gear sleeve, and is simple in structure, part is few in addition, and maximum deceleration needn't be taken out tooth than 143 o'clock.
(C) two groups of steel ball V-type slot devices in the brake component are the automatic pressurizing device of steel ball V-type groove improved (being shown in 90 pages of Ruan Zhongtang " mechanical stepless transmission "): be made up of the steel ball between active V-type slotted disk, the driven V-type slotted disk of telophragma one side and two V-type groove faces for first group, telophragma connects with the awl dish; Second group by the telophragma opposite side initiatively V-type slotted disk, the second driven V-type slotted disk and two V-type groove face intermediary steel balls are formed.Principle of work: during energising, first group of active V-type groove face produces positive pressure to steel ball, and its axial component promotes the driven V-type slotted disk of telophragma separates friction pair, and braking moment disappears, and its circumferential component drives the output shaft work done that connects with second group of driven V-type slotted disk; During outage, the input shaft stop, torque makes the second driven V-type groove face produce positive pressure to steel ball, and its axial component compresses friction pair, and braking moment will muchly have much.
According to background technology, its creativeness is embodied in [beneficial effect]:
(1) in the reciprocal work done of pushing ram, guarantees gear-tooth bar accuracy of mesh, greatly reduce the vibration of surging force and pushing ram;
(2) background technology " the hard flank of tooth speed reduction unit of awl tooth+secondary " (bearing capacity 72000Nm) is suitable with the hard flank of tooth speed reduction unit of DCY-500 type (being shown in 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 following: hypocycloid pitch radius R z=275, Y 1max=1.09, B=14/28
Contact stress σ Jmax=(8914/R z) { Y 1maxT 2/ B} 0.5=1605 (MPa)
Allowable contact stress [σ H]=1617 (MPa) (HB600-600) (are shown in Xu Hao " mechanical design handbook " volume 1.4-289 page or leaf);
(3) breast wheel thickness is both sides uniform thickness wheel twice, 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; Cycloidal gear teeth and hypocycloidal tooth can not break, thereby supporting capacity is big, and safety is high.
(4) braking moment increases with torque and increases automatically, so instead magnetic eddy-current brake WZ355L carries out the speed setting of coke pushing whole process with hydraulic pressure block brake YWZ-400/90-10, to realize the not having impact coke pushing.
[description of drawings] Fig. 1. embodiment of the invention structural representation
Fig. 2,3 is respectively steel ball and V-type groove outage (braking), stressed schematic diagram when switching on (work done)
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1., 2. and 3. 1 kinds of horizontal braking moments from increasing cycloid-tooth bar coke pusher; Comprise that coke pushing bearing 1, support roll 2, pushing ram 3 and braking moment are from increasing transmission mechanism; Said pushing ram 3 (comprising coke pushing head, crawler shoe) is a body structure; Be bearing on the support roll 2, have three groups to have the side roller to prevent pushing ram 3 sideslips in the support roll 2, support roll 2 is connected in the bottom of coke pushing bearing 1; Said braking moment comprises driving member and brake component from increasing transmission mechanism; Said driving member comprises input shaft 21 and is contained in first and second capacity eccentric bearing 20,19, Cycloidal Wheel, hypocycloid gear ring 34 and the output mechanism on the input shaft 21 that output mechanism comprises output shaft 11, pin 14 and column sleeve, it is characterized in that:
(A) said output shaft 11 two ends are bearing in forward and backward frame 9,13 endoporus with first and second bearing 10,12 respectively, and device is spent strong being slidingly connected at first and second bearing 10, driving gear 8 between 12 with output shaft 11 usefulness, make driving gear 8 have certain amount of floating in order to compensate and long tooth bar 5 between sideshake and bottom clearance; Driving gear 8 meshes with long tooth bar 5, and the driving gear 8 of background technology cantilever arrangement is improved to freely supported structure and has improved the accuracy of mesh of gear-tooth bar, and long tooth bar 5 transverse section are " protruding " shape; Place pushing ram 3 corresponding elongated slots, running fit relies on the upper edge of elongated slot two sides to carry out spacing in the face of two of long tooth bar 5 " protruding " shape is takeed on; Gapped between upper edge face and " protruding " shape two shoulders, long tooth bar 5 bottom supportings are on slide roller 4, and slide roller 4 is connected in the pushing ram 3; Principle of work is: when driving gear 8 changes clockwise; Long tooth bar 5 drives pushing ram 3 and moves forward, otherwise, when driving gear 8 changes counterclockwise; Long tooth bar 5 drives pushing ram 3 and moves backward; Because long tooth bar 5 is not to be fixed on the pushing ram 3, therefore when " waist collapses " appearred in pushing ram 3, the sideshake of gear-tooth bar and bottom clearance still were in theoretical value; Forward and backward frame 9,13 is fastened on the step-down gear base plate 7; Said step-down gear base plate 7, footing 6 and coke pushing bearing 1 connect one in order, and identical Cycloidal Wheel 16 in both sides and 180 ° of middle Cycloidal Wheel 17 phase differential in the said Cycloidal Wheel, both sides Cycloidal Wheel 16 are taken turns the half the of Cycloidal Wheel 17 in the middle of wide the equaling; Column sleeve 15,18 corresponds respectively to Cycloidal Wheel 16,17, and said hypocycloid gear ring 34 is connected in afer bay 13 endoporus;
(B) said brake component comprise the middle tube 22 that is connected in afer bay 13 end faces, the placket 31 that connects with middle tube 22 reach in, two groups of V-type slotted disk mechanisms, friction pair and return springs of placket endoluminal means, wherein:
Said friction pair comprises inner cone 33 and awl dish 32, and wherein inner cone 33 is connected in placket 31 endoporus, and awl dish 32 connects with telophragma 27, and the isolating axial theoretical value of friction pair is x;
In said two groups of V-type slotted disk mechanisms; First group of active V-type slotted disk 29 is connected on the rotor axis of electric 30; Telophragma 27 1 sides are the first driven V-type slotted disk, have the driven V-type slotted disk 25 of steel ball 28, the second and the male spline shaft extension end of input shaft 21 to be slidingly connected between the master and slave two V-type grooves; Telophragma 27 opposite sides are between the second active V-type slotted disk, the two V-type grooves steel ball 26 to be arranged, and the steel ball number that is uniformly distributed with equates with V-type groove number;
Said return spring 24 1 ends are close to the end in glass type spring support 23; The other end is close to second driven V-type slotted disk 25 end faces; Return spring 24 compresses awl dish 32 and inner cone 33 friction pairs; The outer face of said cup type spring support 23 is near input shaft 21 shaft shoulders and the gap between opening end and the driven V-type slotted disk 25 equals the isolating axial theoretical value x of friction pair, 22 endoporus during said input shaft 21 usefulness bearings are bearing in.
Braking principle: during energising, connect with rotor axis of electric 30 first group initiatively the V-type groove face of V-type slotted disk 29 steel ball 28 is produced positive pressures: the driven V-type slotted disk that axial component promotes telophragma 27 makes friction pair separate (axial distance x), the braking moment disappearance; Circumferentially the component driving is rotated works done with the input shaft 19 of second group of driven V-type slotted disk 25 splined.Obvious first group of steel ball V-type slot device function is clutch coupling, and second group of steel ball V-type slot device function is shaft coupling; When outage, rotor axis of electric 30 stops, torque makes the V-type groove face of the second driven V-type slotted disk 25 produce positive pressure to steel ball 26, and its axial component compresses friction pair, thereby braking moment will muchly have much.

Claims (1)

1. a horizontal braking moment is from increasing cycloid-tooth bar coke pusher; Comprise that coke pushing bearing (1), support roll (2), pushing ram (3) and braking moment are from increasing transmission mechanism; Said pushing ram (3) (comprising coke pushing head, crawler shoe) is a body structure; Be bearing on the support roll (2), have three groups to have the side roller to prevent pushing ram (3) sideslip in the support roll (2), support roll (2) is connected in the bottom of coke pushing bearing (1); Said braking moment comprises driving member and brake component from increasing transmission mechanism; Said driving member comprises input shaft (21) and is contained in first and second capacity eccentric bearing (20,19), Cycloidal Wheel, hypocycloid gear ring (34) and the output mechanism on the input shaft (21) that output mechanism comprises output shaft (11), pin (14) and column sleeve, it is characterized in that:
(A) said output shaft (11) two ends use first and second bearing (10,12) to be bearing in forward and backward frame (9,13) endoporus respectively; The driving gear (8) of device between first and second bearing (10,12) is slidingly connected with spending to be good for output shaft (11), driving gear (8) and long tooth bar (5) engagement, and said long tooth bar (5) transverse section is " protruding " shape; Place the corresponding elongated slot of pushing ram (3); Running fit, the upper edge of dependence elongated slot two sides is carried out spacing in the face of two of long tooth bar (5) " protruding " shape is takeed on, gapped between upper edge face and " protruding " shape two shoulders; Long tooth bar (5) bottom supporting is on slide roller (4); Slide roller (4) is connected in the pushing ram (3), and forward and backward frame (9,13) is fastened on the step-down gear base plate (7), and said step-down gear base plate (7), footing (6) and coke pushing bearing (1) connect one in order; Identical Cycloidal Wheel in both sides (16) and 180 ° of middle Cycloidal Wheel (17) phase differential in the said Cycloidal Wheel; Cycloidal Wheel (17) is half the in the middle of wide the equaling of both sides Cycloidal Wheel (16) wheel, and column sleeve (15,18) corresponds respectively to Cycloidal Wheel (16,17), and said hypocycloid gear ring (34) is connected in afer bay (13) endoporus;
(B) said brake component comprise the middle tube (22) that is connected in afer bay (13) end face, the placket (31) that connects with middle tube (22) reach in, two groups of V-type slotted disk mechanisms, friction pair and return springs of placket endoluminal means, wherein:
Said friction pair comprises inner cone (33) and awl dish (32), and wherein inner cone (33) is connected in placket (31) endoporus, and awl dish (32) connects with telophragma (27), and the isolating axial theoretical value of friction pair is x;
In said two groups of V-type slotted disk mechanisms; First group of active V-type slotted disk (29) is connected on the rotor axis of electric (30); Telophragma (27) one sides are the first driven V-type slotted disk, between the master and slave two V-type grooves steel ball (28) are arranged, and second driven V-type slotted disk (25) is slidingly connected with the male spline shaft extension end of input shaft (21); Telophragma (27) opposite side is between the second active V-type slotted disk, the two V-type grooves steel ball (26) to be arranged, and the steel ball number that is uniformly distributed with equates with V-type groove number;
Said return spring (24) one ends are close to a glass interior end of type spring support (23); The other end is close to second driven V-type slotted disk (25) end face; Return spring (24) compresses awl dish (32) and inner cone (33) friction pair; The outer face of said cup type spring support (23) is near input shaft (21) shaft shoulder and the gap between opening end and the driven V-type slotted disk (25) equals the isolating axial theoretical value x of friction pair, and said input shaft (21) is bearing in middle (22) endoporus with bearing.
CN 201210141287 2012-05-08 2012-05-08 Horizontal braking torque self-increased cycloid-rack coke pushing device Active CN102676184B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797957A (en) * 1980-12-12 1982-06-17 Honda Motor Co Ltd Gear device
CN2250357Y (en) * 1996-02-08 1997-03-26 史正高 Horizontal coke pushing machine
JPH09296858A (en) * 1996-05-01 1997-11-18 Tochigi Fuji Ind Co Ltd Gear pair and fluid mechanism using gear pair
CN2886220Y (en) * 2006-04-03 2007-04-04 上海千荟温室工程技术有限公司 Gear rack transmission device for greenhouse sunshade thermal insulating system
CN201818748U (en) * 2010-09-19 2011-05-04 杜明乾 Anti-backlash transmission case for linear motion on rack

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797957A (en) * 1980-12-12 1982-06-17 Honda Motor Co Ltd Gear device
CN2250357Y (en) * 1996-02-08 1997-03-26 史正高 Horizontal coke pushing machine
JPH09296858A (en) * 1996-05-01 1997-11-18 Tochigi Fuji Ind Co Ltd Gear pair and fluid mechanism using gear pair
CN2886220Y (en) * 2006-04-03 2007-04-04 上海千荟温室工程技术有限公司 Gear rack transmission device for greenhouse sunshade thermal insulating system
CN201818748U (en) * 2010-09-19 2011-05-04 杜明乾 Anti-backlash transmission case for linear motion on rack

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Address after: 225471 Taixing, Jiangsu, the town lost the brilliant road, No. 1

Patentee after: Wu Xiaojie

Address before: Kunyang town of Pingyang County in Zhejiang province Wenzhou city 325400 building 761 room No. four white stone street

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Address after: 301700 Tianjin Chengguan Town, Wuqing district government building No. 3 Road on the west side of the City Jinyuan -4-602

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Patentee after: Tailong Decelerating Machine Co., Ltd., Jiangsu

Address before: 301700 Building No. 3, Jinyuan, Chengguan Town, Wuqing District, Tianjin - 4-602

Patentee before: Dong Hongxiu