CN101929175B - Roller disc mechanism - Google Patents
Roller disc mechanism Download PDFInfo
- Publication number
- CN101929175B CN101929175B CN200910012120.2A CN200910012120A CN101929175B CN 101929175 B CN101929175 B CN 101929175B CN 200910012120 A CN200910012120 A CN 200910012120A CN 101929175 B CN101929175 B CN 101929175B
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- CN
- China
- Prior art keywords
- roller
- retainer plate
- roller wheel
- rail
- disc mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The invention provides a roller disc mechanism in a rotary motion system of an electric excavator, which is designed based on an established motion trail. The roller disc mechanism mainly consists of an upper ring rail and a lower ring rail with conical rail surfaces, a conical roller wheel, a roller wheel shaft, a nylon shaft sleeve, a fixed inner ring, a fixed pin and the like. In the invention, the conical degree between the roller wheel and the rail surface guarantees that the roller wheel can perform pure rolling operation on a set circular track, and axial thrust load on the roller wheel generated by weight of an upper part of a platform of the excavator is balanced by the fixed inner ring; a Mc5 nylon plus MOS shaft sleeve is arranged between the roller wheel shaft and the roller wheel; and no sliding friction occurs between the roller wheel and the ring rail, thus lowering resistance to rotary motion, reducing abrasion, lowering fault rate and prolonging service life of the roller disc mechanism.
Description
One, technical field
The invention belongs to mechanical movement and manufacture and design field, specifically solve the reasonability of mechanical movement, thereby reduce mechanical wear and the resistance of motion, reduction energy consumption, reduce mechanical breakdown.
Two, technical background
In the electric excavator course of work, a pipeful of rev that all will do of every shovel, installs to mineral in haulage vehicle and goes.The principle of electric dipper slewing motion is that on revolving dial, all equipments are done Plane Rotation motion around centerpivot.The stationary part of gyration is by undercarriage bea, and running gear forms, and motion parts is made up of the above part of workbench.Centre is supported by revolving roll dish.Running roller on revolving roll dish is encircling between rail and is rolling up and down.
Three, summary of the invention
Determine structure, size and the mounting means of ring rail, running roller, retainer plate by designing and calculating.Accomplish to do pure rolling friction between running roller and ring rail from design.The movement locus of running roller is accurate.Rational in infrastructure, be convenient to maintenance.
Four, accompanying drawing explanation
Fig. 1 is old product ring rail key dimension figure.
Fig. 2 is pure rolling principle calculating chart.
Fig. 3 is the sectional drawing of ring rail and running roller.
Fig. 4 is ring rail assembly drawing.Wherein 1. pressed on ring rails, 2. running roller, 3. nylon cushion, 4. rolling axle, 5. oil nozzle, 6. nylon jacket, 7. descends ring rail, 8. running roller retainer plate, 9. steady pin, 10 cottor pins.
Fig. 5 is roller disc mechanism assembling drawing.
Five, technical scheme
For guaranteeing the correct engagement of the large pinion of revolution, must guarantee the relative position between revolving dial and underframe.Be the upper plane of pressed on ring rail to the distance (seeing Fig. 1) between the lower plane of lower ring rail, the former design load of this size is 300mm, keeps 300mm size constancy, has also just guaranteed that large pinion is in axial correct engagement.This is the basic principle that redesigns roller dish.Because bulk limit collar rail diameter can not have a greater change.Now hypothesis ring rail and rolling element are made up of desirable rigid material, in mutual motion process, nonelastic and plastic strain and cylindrical rolling body are made PURE ROLLING, while only having taper rolling element to make pure rolling, its movement locus may be just a circle, after the diameter of annular trace is determined, the tapering of cone and diameter are determined thereupon.
1, determining and checking computations of rolling element tapering diameter
Front topic condition
Ring rail central diameter: φ 2900mm
Ring rail width: 100mm
Ring rail diameter: external diameter φ 3000 internal diameter φ 2800
R
outward=1500 R
in=1400
Roller dish overall height: 300mm
If rolling cone outside diameter is d
1, end diameter is d
2.(seeing Fig. 2)
Suppose that tapered rollers is encircling up and down between rail and pure rolling in wide region in-orbit.Return ring rail on rail platform turn over θ angle under the support of conical roller time, tapered rollers just turns over one week under the drive of platform, and the condition of pure rolling is: S
1/ R
1=S
2/ R
2=θ
S
1＝πd
1 S
2＝πd
2
θ＝πd
1/R
1＝πd
2/R
2
d
1/R
1＝d
2/R
2
d
1＝R
1/R
2×d
2
d
2＝R
2/R
1×d
1
R
1/R
2＝1500/1400＝1.071428571
Get d
1=173 R
1=1500 R
2=1400
tgδ/2＝(d
1-d
1R
2/R
1)/2(R
1-R
2)
＝d
1(1-R
2/R
1)/2(R
1-R
2)
＝173(1-0.93333)/2×100
＝0.057669
Arctg0.057669＝3.300566°
＝3°18′2″
Rolling element cone angle δ=2 × 3 ° 18 ' 2 "
＝6°36′4″
2, running roller design:
Running roller tapering and diameter encircle up and down rail rail level gradient and design by roller gradient after determining.
3, orbit altitude and fixed form thereof:
Roller disc mechanism overall height 300mm, deducts after running roller diameter as encircling up and down rail overall height: 300-173=127mm (calculating by the large end of running roller), and this numerical value encircles rail mean allocation up and down in principle.Consider that pressed on ring rail is kept in motion and be non-completely circular structure, pressed on ring rail height overall is got 65mm, lower ring rail height overall 62mm.(seeing Fig. 3)
Fixed form: convenient for repairing and changing, ring rail adopts and can demolition connect with the fixed form of gear wheel and revolving dial.Lower ring rail is arranged in the ring rail groove on bull gear, and inner ring is fixed with pressing plate, and outer ring is fixed with voussoir; Pressed on ring rail both sides are all fixed with voussoir.
By the ring rail mounting groove in the requirement design gear wheel of the size of ring rail, shape, fixed form and under rotary table.
The fixed form of relative position between running roller: cancel inside and outside two retainer plates that old product is made up of t=12 steel plate, rigidity is low, in running, very easily distortion, can not be running roller axial location.And running roller from external lid, be difficult for observing the running status of running roller, dress not easy to break.New design one forge piece retainer plate, is arranged on ring rail inside, and rolling axle penetrates in the radial hole of retainer plate, then rolling axle and retainer plate is connected into one with bearing pin.End part of pin shaft is worn φ 6 cottor pins, prevents that bearing pin from skidding off.(seeing Fig. 4)
Claims (3)
1. the roller disc mechanism of an electric excavator, in upper and lower circular cone track, be equipped with by 40 tapered rollers and take turns the roller set forming, roller set is supported by retainer plate, specific features is: on taper cabinet face, do pure rolling operation by the ring rail radius of gyration and the taper running roller that encircles up and down the design of axial distance between rail rail level, the axial thrust load that taper running roller produces is at the volley born by retainer plate, 40 taper running rollers become circumference symmetrical on retainer plate, and whole running roller axial thrust loads that retainer plate bears are in equilibrium state.
2. roller disc mechanism according to claim 1, is characterized in that: between rolling axle and running roller, adopt sliding friction bearing, its material is Mc5 nylon+MoS
2have self-lubricating function, rolling axle and retainer plate connect with φ 25 bearing pins, and its fit tolerance is H7/g6, guarantee that the axial movement value of bearing pin is in allowed band.
3. roller disc mechanism according to claim 1, is characterized in that: on retainer plate, have 40 radial components and in equilibrium state, indeformable under 40 component effects for guaranteeing retainer plate, retainer plate cross dimensions is designed to 8 × 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910012120.2A CN101929175B (en) | 2009-06-19 | 2009-06-19 | Roller disc mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910012120.2A CN101929175B (en) | 2009-06-19 | 2009-06-19 | Roller disc mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101929175A CN101929175A (en) | 2010-12-29 |
| CN101929175B true CN101929175B (en) | 2014-05-14 |
Family
ID=43368575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910012120.2A Expired - Fee Related CN101929175B (en) | 2009-06-19 | 2009-06-19 | Roller disc mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101929175B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605825B (en) * | 2011-12-26 | 2014-09-03 | 太原重工股份有限公司 | Mining excavator and rotating rolling support device thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145831A (en) * | 1995-09-21 | 1997-03-26 | 宋玉泉 | Rolled precision moulding machine |
| CN2601826Y (en) * | 2002-12-29 | 2004-02-04 | 刘运武 | Roller pressing plastic forming machine |
| CN1712136A (en) * | 2004-06-23 | 2005-12-28 | 吴碧碧 | Unit roll-disk breaker |
| CN1951616A (en) * | 2005-10-18 | 2007-04-25 | 陈永真 | Pipe cutter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3778547B2 (en) * | 2001-12-12 | 2006-05-24 | 新キャタピラー三菱株式会社 | Cab door structure in construction machinery |
-
2009
- 2009-06-19 CN CN200910012120.2A patent/CN101929175B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145831A (en) * | 1995-09-21 | 1997-03-26 | 宋玉泉 | Rolled precision moulding machine |
| CN2601826Y (en) * | 2002-12-29 | 2004-02-04 | 刘运武 | Roller pressing plastic forming machine |
| CN1712136A (en) * | 2004-06-23 | 2005-12-28 | 吴碧碧 | Unit roll-disk breaker |
| CN1951616A (en) * | 2005-10-18 | 2007-04-25 | 陈永真 | Pipe cutter |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2003-176552A 2003.06.24 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101929175A (en) | 2010-12-29 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20160619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |