CN102676184B - 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
CN102676184B
CN102676184B CN 201210141287 CN201210141287A CN102676184B CN 102676184 B CN102676184 B CN 102676184B CN 201210141287 CN201210141287 CN 201210141287 CN 201210141287 A CN201210141287 A CN 201210141287A CN 102676184 B CN102676184 B CN 102676184B
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coke pushing
rack
type
coke
slotted disk
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CN102676184A (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 sidesurfaces 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 wheelsand 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 theresisting 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 " 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 on the support roll, have in the support roll three groups with the side roller to prevent the pushing ram sideslip, coke pushing leverage 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 incinerator that prevents from having 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 cone tooth+secondary parallel-axes gears realized pushing ram forward and back, coke pushing speed 27.4m/min, stroke 25774mm.
[summary of the invention]
Gear-tooth bar stable drive, pushing ram did not vibrate and low with price, that mechanical efficiency is identical single-stage cycloidal replaces the horizontal braking moment of background technology from increasing cycloid-rack drives coke pusher when the object of the invention provided a kind of work done.
Technical scheme:
(A) driving gear and output shaft are with spending strong being slidingly connected, make driving gear have certain amount of floating in order to sideshake and the bottom clearance of compensation with tooth bar, long tooth bar places the corresponding elongated slot of pushing ram, running fit, the tooth bar bottom supporting is on slide roller, slide roller is connected in the pushing ram, therefore in the reciprocal work done of pushing ram, when " waist collapses " distortion appears 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 are in theoretical value, and the steady transmission of gear-tooth bar greatly reduces the vibration of gear-tooth bar surging force and pushing ram.
(B) slow down with single-stage three-chip type double cycloid and 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 can replace " cone tooth+secondary reducer with hardened tooth surface ".
Because hypocycloid gear ring and external tooth Cycloidal Wheel are that pure rolling mesh 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 consider the working accuracy of hypocycloid gear ring, 1/3rd calculating are more reasonable by improving.The hypocycloid gear ring replaces the pinwheel that is made 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 steel ball V-type groove automatic pressurizing device improved (seeing 90 pages of Ruan Zhongtang " mechanical stepless transmission "): first group is comprised 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, and telophragma connects with the cone dish; Second group of steel ball by telophragma opposite side active V-type slotted disk, the second driven V-type slotted disk and two V-type groove faces centre forms.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, moment of resistance 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 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: hypocycloid pitch radius R z=275, Y Lmax=1.09, B=14/28
Contact stress σ Jmax=(8914/R z) { Y LmaxT 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 or leaf);
(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; Cycloidal gear teeth and hypocycloidal tooth can not break, thereby supporting capacity is large, and reliability is high.
(4) braking moment increases with moment of resistance and automatically increases, and therefore can replace magnetic eddy-current brake WZ355L with hydraulic pressure block brake YWZ-400/90-10 carries out the speed setting of coke pushing whole process, to realize without the 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), Force principle figure when switching on (work done)
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1., 2. certainly increase cycloid-tooth bar coke pusher with 3. 1 kinds of horizontal braking moments, comprise coke pushing bearing 1, support roll 2, pushing ram 3 and braking moment are from increasing transmission mechanism, described pushing ram 3 comprises the coke pushing head, crawler shoe, described pushing ram 3 is bearing on the support roll 2 for body structure, 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 braking moment comprises driving member and brake component from increasing transmission mechanism, described driving member comprises input shaft 21 and is contained in first on the input shaft 21, two capacity eccentric bearings 20,19, Cycloidal Wheel, hypocycloid gear ring 34 and output mechanism, output mechanism comprises output shaft 11, pin 14 and column sleeve is characterized in that:
(A) described output shaft 11 two ends use respectively first, two bearings 10,12 be bearing in before, afer bay 9,13 endoporus, device is first, two bearings 10, driving gear 8 between 12 is spent strong being slidingly connected with output shaft 11 usefulness, make driving gear 8 have certain amount of floating in order to sideshake and bottom clearance between compensation and the long tooth bar 5, driving gear 8 and long tooth bar 5 engagements, the driving gear 8 of background technology cantilever arrangement is improved to freely supported structure and improves the accuracy of mesh of gear-tooth bar, long tooth bar 5 transverse section are " protruding " shape, place pushing ram 3 corresponding elongated slots, running fit, rely 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, upper along gapped between face and " protruding " shape two shoulders, long tooth bar 5 bottom supportings are on slide roller 4, slide roller 4 is connected in the pushing ram 3, principle of work is: when driving gear 8 turns clockwise, long tooth bar 5 drives pushing ram 3 and moves forward, otherwise, when driving gear 8 turns counterclockwise, it is mobile backward that long tooth bar 5 drives pushing ram 3, because long tooth bar 5 is not to be fixed on the pushing ram 3, therefore when " waist collapses " appears in pushing ram 3, the sideshake of gear-tooth bar and bottom clearance still are in theoretical value, before, afer bay 9,13 are fastened on the step-down gear base plate 7, described step-down gear base plate 7, footing 6 and coke pushing bearing 1 are integrally togather in turn, the identical Cycloidal Wheel 16 in both sides and 180 ° of middle Cycloidal Wheel 17 phase differential in the described Cycloidal Wheel, both sides Cycloidal Wheel 16 is taken turns half of Cycloidal Wheel 17 in the middle of wide the equaling, column sleeve 15,18 correspond respectively to Cycloidal Wheel 16,17, described hypocycloid gear ring 34 is connected in afer bay 13 endoporus;
(B) described brake component comprise the middle cylinder 22 that is connected in afer bay 13 end faces, with during middle cylinder 22 plackets that connect 31 reach, two groups of V-type slotted disk mechanisms, friction pair and return springs of placket endoluminal means, wherein:
Described friction pair comprises inner cone 33 and cone dish 32, and wherein inner cone 33 is connected in placket 31 endoporus, and cone dish 32 connects with telophragma 27, and the axial theoretical value that friction pair separates is x;
In described 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, between the master and slave two V-type grooves steel ball 28 is arranged, the second driven V-type slotted disk 25 is slidingly connected with the male spline shaft extension end of input shaft 21, 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 uniform steel ball number equates with V-type groove number;
Described return spring 24 1 ends are close to the 23 interior ends of glass type spring support, the other end is close to the second driven V-type slotted disk 25 end faces, return spring 24 compresses cone dish 32 and inner cone 33 friction pairs, the outer face of described cup type spring support 23 is near input shaft 21 shaft shoulders and opening end equals the axial theoretical value x that friction pair separates with gap between the second driven V-type slotted disk 25, and described input shaft 21 usefulness bearings are bearing in middle cylinder 22 endoporus.
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, moment of resistance 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 coke pushing bearing (1), support roll (2), pushing ram (3) and braking moment are from increasing transmission mechanism, described pushing ram (3) comprises the coke pushing head, crawler shoe, described pushing ram (3) is bearing on the support roll (2) for body structure, 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 braking moment comprises driving member and brake component from increasing transmission mechanism, described driving member comprises input shaft (21) and is contained in first on the input shaft (21), two capacity eccentric bearings (20,19), Cycloidal Wheel, hypocycloid gear ring (34) and output mechanism, output mechanism comprises output shaft (11), pin (14) and column sleeve is characterized in that:
(A) described output shaft (11) two ends use respectively first, two bearings (10,12) be bearing in before, afer bay (9,13) endoporus, device is first, two bearings (10,12) driving gear between (8) is slidingly connected with spline with output shaft (11), driving gear (8) and long tooth bar (5) engagement, described long tooth bar (5) transverse section is " protruding " shape, place the corresponding elongated slot of pushing ram (3), running fit, rely 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, upper along gapped between 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), before, afer bay (9,13) be fastened on the step-down gear base plate (7), described step-down gear base plate (7), footing (6) and coke pushing bearing (1) are integrally togather in turn, the identical Cycloidal Wheel in both sides (16) and 180 ° of middle Cycloidal Wheel (17) phase differential in the described Cycloidal Wheel, both sides Cycloidal Wheel (16) wheel is wide equal in the middle of half of Cycloidal Wheel (17), column sleeve (15,18) correspond respectively to Cycloidal Wheel (16,17), described hypocycloid gear ring (34) is connected in afer bay (13) endoporus;
(B) described brake component comprise the middle cylinder (22) that is connected in afer bay (13) end face, the placket (31) that connects with middle cylinder (22) reach in, two groups of V-type slotted disk mechanisms, friction pair and return springs of placket endoluminal means, wherein:
Described friction pair comprises inner cone (33) and cone dish (32), and wherein inner cone (33) is connected in placket (31) endoporus, and cone dish (32) connects with telophragma (27), and the axial theoretical value that friction pair separates is x;
In described 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) is arranged, the 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 uniform steel ball number equates with V-type groove number;
Described return spring (24) one ends are close to a glass interior end of type spring support (23), the other end is close to the second driven V-type slotted disk (25) end face, return spring (24) compresses cone dish (32) and inner cone (33) friction pair, the outer face of described cup type spring support (23) is near input shaft (21) shaft shoulder and opening end equals the axial theoretical value x that friction pair separates with gap between the second driven V-type slotted disk (25), and described 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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2250357Y (en) * 1996-02-08 1997-03-26 史正高 Horizontal coke pushing machine
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

Family Cites Families (2)

* 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
JPH09296858A (en) * 1996-05-01 1997-11-18 Tochigi Fuji Ind Co Ltd Gear pair and fluid mechanism using gear pair

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2250357Y (en) * 1996-02-08 1997-03-26 史正高 Horizontal coke pushing machine
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP昭57-97957A 1982.06.17
JP特开平9-296858A 1997.11.18

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

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