CN103743224A - Dual-drive heavy dryer with zero horizontal thrust - Google Patents
Dual-drive heavy dryer with zero horizontal thrust Download PDFInfo
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- CN103743224A CN103743224A CN201410023306.9A CN201410023306A CN103743224A CN 103743224 A CN103743224 A CN 103743224A CN 201410023306 A CN201410023306 A CN 201410023306A CN 103743224 A CN103743224 A CN 103743224A
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- dryer
- dual
- gear ring
- driving
- drive
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Abstract
The invention relates to industrial material drying equipment, in particular to a dual-drive heavy dryer with zero horizontal thrust. The dual-drive heavy dryer comprises a barrel, a supporting roller group for supporting the barrel is mounted under the barrel, and a gear ring is mounted on the barrel. The dual-drive heavy dryer is characterized by being provided with a left supporting seat and a right supporting seat, a left driving device and a right driving device are mounted on the left supporting seat and the right supporting seat respectively, a driving gear is mounted on each of the two driving devices, the driving gears on the left and right sides are in transmission connection with the gear ring, and the two driving gears are located on a horizontal center line of the gear ring. The problem that driving devices of an existing heavy dryer are unreasonable in position arrangement to easily cause damage to the driving device and a supporting roller group on one side of the dryer, operation instability of the dryer and the like is solved, and the dual-drive heavy dryer is widely applied to material drying in metallurgy, chemical and building material industries and the like.
Description
Technical field
The present invention relates to industrial material drying plant, specifically the heavy dryer of a kind of zero level thrust Dual Drive.
Background technology
Along with drying industrial expansion, the maximization of equipment has become the trend of development.Heavy dryer for Dual Drive also more and more carries out exemplary application in industrial stoving.At present, the rotating drum type drying machine of largest domestic, diameter has been greater than 5m, and length exceedes 30m, and larger system is also in design.But, the heavy dryer of most Dual Drive has still kept the drives structure feature of traditional dryer on the market, be about to the bottom of two drive installations at dryer, at this moment, dryer certainly exists a horizontal thrust Fsp, fragile by causing the right driving device of dryer and support roller and wheel to be with, dryer fluctuation of service etc.Existing Dual Drive stressing conditions is analyzed as follows: referring to Fig. 1, for the ease of processing, gear pair is generally straight-tooth, and its profile angle is 20 °, and force analysis is shown in Fig. 2, when gear drive:
Fj=tgα×Fq ①
Fq-driving force
Fj-radial thrust
When Dual Drive is arranged, force resolution is as Fig. 3:
Right-hand member driven wheel arranges that with the pass at θ angle be making a concerted effort for Fsp of Fj and Fq projection in the horizontal direction
right, have:
Fsp
right=Fj × cos θ – Fq × sin θ 2.
1. the formula 2. formula of bringing into obtains,
Fsp
right=Fq × (tg α × cos θ-cos(90-θ)) 3.
Left end driven wheel arranges that with the pass at θ angle be making a concerted effort for Fsp of Fj and Fq projection in the horizontal direction
left, have:
Fsp
left=-Fj × cos θ-Fq × cos (90-θ) 4.
1. the formula 4. formula of bringing into obtains,
Fsp
left=-Fq × (tg α × cos θ+cos (90-θ)) 5.
, left and right end horizontal thrust make a concerted effort for 3.+5.:
Fsp=- 2Fq×cos（90-θ） ⑥
From 6. formula, when θ=60 °, be existing conventional layout angle, Fsp=-1.732Fq;
Horizontal thrust Fsp pays supporting roller and the impact of bearing life:
In motion, the load of support roller is comprised of two parts: a part for gravity make a concerted effort P be that equipment self-weight adds weight of material, with the pass of bearing angle β be P
tz=P
tu=P/2cos β; Another part is the additional load P forming under Fsp effect
tf
P
tf=Fsp/sin β 7.
When 7. the load in formula is increased on one group of support roller, will deduct equal amount in another group, according to the direction of rotation of dryer, have:
P
tz=P/2cosβ+ Fsp/sinβ
P
tu=P/2cosβ- Fsp/sinβ
In formula:
P: the partical gravity that cylindrical shell drives two ends support roller to bear
P
tz: left support roller load
P
tu: right support roller load
β: support roller bearing angle, generally between 20 °-40 °
P
tf: the support roller additional load that driving force causes
From the above, because β angle is between 20 °-40 °, the additional load P of the support roller that driving force causes
tf=1.55-2.92Fsp, hence one can see that, and left support roller load will be greater than right support roller load, if and there is this difference, dryer will do slope climbing movement to the left, and the center of whole dryer is offset to the left, to reach equilibrium of forces, this will affect the even running of dryer greatly.
The impact of additional load on bearing life
Rolling bearing basic rating life formula is:
L
10=16667×（c/p）
e/n ⑧
In formula
L
10h: the basic rating life of crash rate 10%, h
C: substantially appraise and decide dynamic loading, N
P: equivalent radial load, N
E: life index, to ball bearing e=3, roller bearing e=3.33
N: bearing rotating speed, r/min
By 8. Shi Ke get, due to P
tfthe existence of=Fsp/sin β, equivalent radial load is larger, and bearing life is less.
Summary of the invention
It is unreasonable that object of the present invention will solve existing heavy drying machine structure exactly, easily causes the drive unit of dryer one side and support roller group to be damaged, and the problems such as dryer fluctuation of service provide a kind of zero level thrust Dual Drive heavy dryer.
Design philosophy of the present invention is: known according to aforementioned 6. formula, when θ=90 °, Fsp=2 Fq, reaches maximum; When θ=0, be arranged horizontally Point of Innovation, Fsp=0. now, the horizontal thrust equal and opposite in direction of dryer, opposite direction, cancels each other, only bear ± Fq of dryer gear pair form pure couple, make to dry four stressed equal (see figure 4)s of riding wheel apparatus.Can elimination of level thrust Fsp the impact in part service life on dryer, make dryer operation more steady.
For this reason, concrete scheme of the present invention is: for existing heavy dryer, improve, it has cylindrical shell, the below of cylindrical shell is provided with the support roller group of supporting cylinder, gear ring is housed on cylindrical shell, it is characterized in that: be provided with left and right bearing, left and right drive unit is installed on left and right bearing, the driving gear point left and right sides and gear ring are respectively housed on two drive units and are in transmission connection, and described two driving gears are positioned on the horizontal center line of gear ring.(see figure 3)
Drive unit described in the present invention is comprised of power motor and decelerator.
The present invention is owing to having taked double-drive device and gear ring horizontal center line same level to arrange, thereby making drive unit is zero to the horizontal thrust of drier body, therefore the present invention is by the bearing service life of greatly improving in double-drive device, and the service life of support roller group and wheel band, also will greatly improve the operation stability of dryer simultaneously.
Accompanying drawing explanation
Fig. 1 is existing drying machine structure schematic diagram;
Fig. 2 is strength of gear analysis chart;
Fig. 3 is existing dryer double-drive device force analysis figure;
Fig. 4 is double-drive device force diagram of the present invention;
Fig. 5 is drying machine structure schematic diagram of the present invention.
In figure: 1-cylindrical shell, 2-gear ring, 3-right drive unit, 4-support roller group, 5-left drive unit, 6-right support abutment, 7-left support abutment.
The specific embodiment
Referring to Fig. 5, the present invention has cylindrical shell 1, the below of cylindrical shell 1 is provided with the support roller group 4 of supporting cylinder, gear ring 2 is housed on cylindrical shell 1, it is characterized in that: be provided with left and right bearing 6 and 7, on left and right bearing 6 and 7, be provided with and on left and right drive unit 5 and 3, two drive units, the driving gear point left and right sides be respectively housed and gear ring 2 is in transmission connection, and described two driving gears are positioned on the horizontal center line of gear ring 2.
Drive unit described in the present embodiment is comprised of power motor and decelerator.
Claims (2)
1. the heavy dryer of zero level thrust Dual Drive, there is cylindrical shell, the below of cylindrical shell is provided with the support roller group of supporting cylinder, gear ring is housed on cylindrical shell, it is characterized in that: be provided with left and right bearing, left and right drive unit is installed on left and right bearing, the driving gear point left and right sides and gear ring is respectively housed on two drive units and is in transmission connection, and described two driving gears are positioned on the horizontal center line of gear ring.
2. the heavy dryer of zero level thrust Dual Drive according to claim 1, is characterized in that: described drive unit is comprised of power motor and decelerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023306.9A CN103743224A (en) | 2014-01-20 | 2014-01-20 | Dual-drive heavy dryer with zero horizontal thrust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023306.9A CN103743224A (en) | 2014-01-20 | 2014-01-20 | Dual-drive heavy dryer with zero horizontal thrust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103743224A true CN103743224A (en) | 2014-04-23 |
Family
ID=50500269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410023306.9A Pending CN103743224A (en) | 2014-01-20 | 2014-01-20 | Dual-drive heavy dryer with zero horizontal thrust |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2441901A (en) * | 1946-02-09 | 1948-05-18 | Smidth & Co As F L | Mill |
| US4911554A (en) * | 1984-09-14 | 1990-03-27 | Heinrich Henne | Rotatable drum |
| CN2264071Y (en) * | 1996-08-09 | 1997-10-08 | 马岩波 | Annular mould pressure filter for pomace and dreg |
| CN2352910Y (en) * | 1998-06-11 | 1999-12-08 | 黄石市建材节能设备总厂 | Drying machine with zero level pushing force |
| CN1625442A (en) * | 2002-04-03 | 2005-06-08 | 马格齿轮股份公司 | Driving device for horizontally turning retational solid |
| CN201221893Y (en) * | 2008-05-23 | 2009-04-15 | 贾林喜 | Three-cylinder drying machine |
| CN202730030U (en) * | 2012-07-06 | 2013-02-13 | 安徽金阳环保肥业有限公司 | Fertilizer drying and prilling rotating-drum |
-
2014
- 2014-01-20 CN CN201410023306.9A patent/CN103743224A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2441901A (en) * | 1946-02-09 | 1948-05-18 | Smidth & Co As F L | Mill |
| US4911554A (en) * | 1984-09-14 | 1990-03-27 | Heinrich Henne | Rotatable drum |
| CN2264071Y (en) * | 1996-08-09 | 1997-10-08 | 马岩波 | Annular mould pressure filter for pomace and dreg |
| CN2352910Y (en) * | 1998-06-11 | 1999-12-08 | 黄石市建材节能设备总厂 | Drying machine with zero level pushing force |
| CN1625442A (en) * | 2002-04-03 | 2005-06-08 | 马格齿轮股份公司 | Driving device for horizontally turning retational solid |
| CN201221893Y (en) * | 2008-05-23 | 2009-04-15 | 贾林喜 | Three-cylinder drying machine |
| CN202730030U (en) * | 2012-07-06 | 2013-02-13 | 安徽金阳环保肥业有限公司 | Fertilizer drying and prilling rotating-drum |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |