CN103511471A - Main shaft bearing and transmission device - Google Patents
Main shaft bearing and transmission device Download PDFInfo
- Publication number
- CN103511471A CN103511471A CN201310433579.6A CN201310433579A CN103511471A CN 103511471 A CN103511471 A CN 103511471A CN 201310433579 A CN201310433579 A CN 201310433579A CN 103511471 A CN103511471 A CN 103511471A
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- main shaft
- bearing
- transmission device
- bearings
- speed
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- Rolling Contact Bearings (AREA)
Abstract
The invention belongs to the technical field of machinery, and particularly relates to a main shaft bearing and transmission device. In order to achieve the purpose of allowing a main shaft to rotate at a high speed and bearings to support the main shaft together, three uniformly-spaced bearings which contact with the main shaft neck, can relatively roll relative to the main shaft, and have the same size, and three driving rings which contact with the three bearings are arranged on the main shaft; the outer diameter of each bearing is larger than that of the main shaft, so that the main shaft can rotate at a high speed far higher than the maximal permissible rotation speed, and the three bearing can support the main shaft together. The main shaft bearing and transmission device has the advantages of high load supporting capacity, good rigidity, and no need of a special oil station for oil supply.
Description
Technical field
The invention belongs to field of mechanical technique, be specifically related to a kind of main shaft supporting and transmission device.
Background technique
Now widely used compressor, pump, the main shaft of the equipment such as lathe is to high running accuracy and high rotational speed and heavy duty, intelligentized future development, but the rotational speed of main shaft is subject to the restriction of bearing, rolling bearing is due to good rigidly, standard degree is high, simple and compact for structure, the advantage that bearing capacity is large, the supporting of tradition main shaft adopts rolling bearing mostly, but rolling bearing is subject to material, technique, cooling, the restriction of the factor such as lubricated, the linear velocity of its relative movement can not be too large, the product (dn) that is bearing bore diameter and rotating speed has a limit value, it is restricted in high-speed rotary main shaft supporting.
Although hydrodynamic bearing can adapt to high speed operation, when having the variation of rotating speed, load or the situation of often start and stop, its life and reliability will be had a strong impact on; Hydrodynamic journal liquid polymers can be at rotating speed, load variations and frequent high speed operation in the various situations such as start and stop, but it needs the forced feed system of a set of bulky complex; Gas bearing also can adapt to and run up, but its bearing capacity is very poor, is difficult to bear larger load.
Due to the supporting means of above reason main shaft, in a stable condition lower limit system raising of spindle speed, therefore the improvement of main shaft supporting and transmission system is very important.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of main shaft High Rotation Speed that makes is provided, again the main shaft supporting of supporting spindle and transmission device jointly.
For achieving the above object, the technical solution used in the present invention is: comprise equal-sized three bearings of equidistantly arranging of main shaft and supporting spindle, described bearing outside diameter is greater than main shaft external diameter.
Described bearing outside diameter is 2～6 times of main shaft external diameter.
Described bearing outside is also provided with the driving ring all contacting with bearing.
Between described main shaft and bearing, bearing and driving ring, be interference fit.
The present invention has following beneficial effect: the prior art of comparing, the present invention is by three bearings that arrange, shared the pressure of main shaft, therefore carrying can large, good rigidly; Need special-purpose petrol station fuel feeding, and because the size radius of the bearing arranging is greater than the radius of main shaft axle journal, so the rotating speed of main shaft is greater than the rotating speed of bearing, so main shaft can be under the maximum permissible revolution far above bearing High Rotation Speed.
Further, due to bearing arranged outside driving ring, because the radius of bearing is greater than the radius of main shaft axle journal, and the operation line speed of contact position is identical, by main shaft, drive bearing to rotate, bearing drives driving ring to rotate again, so the rotating speed of main shaft is greater than the rotating speed of bearing, the rotating speed of bearing is greater than the rotating speed of driving ring, thus main shaft can be under the maximum permissible revolution far above bearing High Rotation Speed.
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram;
Fig. 2 is the main shaft supporting schematic diagram that high-speed electric expreess locomotive drives;
Fig. 3 is the centrifugal compressor schematic diagram that motor speedup drives.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment 1: referring to Fig. 1, the present invention includes main shaft 1, on main shaft 1, be provided with and contact with main shaft 1 axle journal, and can rolling relative to main shaft 1, and three equal-sized bearings 2 of spaced set, bearing 2 external diameters that adopt are 2～6 times of main shaft 1 external diameter.Referring to Fig. 2, when the present invention is used on the main shaft that high-speed electric expreess locomotive drives, at main shaft 1 two ends axle journal of the present invention, each is supported by three bearings 2, the rotor of high-speed electric expreess locomotive 4 drives main shaft 1 High Rotation Speed, main shaft 1 band dynamic bearing 2 rotations, bearing 2 external diameters are 2～6 times of main shaft 1 external diameter, and the rotating speed of main shaft 1 is far above the rotating speed of bearing 2 like this, thus main shaft 1 can be under the maximum permissible revolution far above bearing 2 High Rotation Speed.
Embodiment 2: referring to Fig. 1, the present invention includes main shaft 1, on main shaft 1, be provided with and contact with main shaft 1 axle journal, and can rolling relative to main shaft 1, and three equal-sized bearings 2 of spaced set, bearing 2 external diameters that adopt are 2～6 times of main shaft 1 external diameter.And in bearing 2 outsides, be also provided with the driving ring 3 all contacting with bearing 2, wherein between main shaft 1 and bearing 2, bearing 2 and driving ring 3, be interference fit.When driving ring 3 rotates under external force drives, by 2 rotations of friction belt dynamic bearing, bearing 2 drives main shaft 1 rotation by friction again, between ideal situation lower main axis 1, bearing 2 and driving ring 3, only has relative rolling, the linear velocity of each point of contact is identical, therefore the ratio of main shaft 1 rotating speed and driving ring 3 rotating speeds equals the ratio of driving ring 3 internal diameters and main shaft 1 external diameter, can make main shaft 1 High Rotation Speed during driving ring 3 low speed rotation.Referring to Fig. 3, the present invention is used in to the centrifugal compressor that motor speedup drives, the rotor of compressor electric motor 5 and driving ring of the present invention 3 are combined as a whole, compressor electric motor 5 drives driving ring 3 driving bearings 2, bearing 2 drives main shaft 1 with the rotating speed rotation far above compressor electric motor 5, and main shaft 1 drives compressor impeller 6 pressurized gass.Bearing 2 is with the low speed rotation of relative comfort, and main shaft 1 is with the rotating speed High Rotation Speed far above bearing 2, to reach the very high rotating speed of compressor needs.
Can certainly rotate by coupling or other mode drive main spindle, also can replace bearing 2 with bearing 2 supporting roller work, to reach identical effect again with cylindrical roller.
Owing to there being multiple concrete manifestation form in the situation that not deviating from spirit of the present invention or inner characteristic, so except as otherwise noted, be to be understood that above-described embodiment is not limited to any details of above stated specification, and the explanation of broad sense within the spirit and scope that should stipulate in claim.Therefore, the institute within the scope of claim changes, revises or replaces, and all belongs to the scope of protection of present invention.
Claims (4)
1. main shaft supporting and a transmission device, is characterized in that: comprise equal-sized three bearings (2) of equidistantly arranging of main shaft (1) and supporting spindle (1), described bearing (2) external diameter is greater than main shaft (1) external diameter.
2. main shaft supporting according to claim 1 and transmission device, is characterized in that: described bearing (2) external diameter is 2～6 times of main shaft (1) external diameter.
3. main shaft supporting according to claim 1 and 2 and transmission device, is characterized in that: described bearing (2) outside is also provided with the driving ring (3) all contacting with bearing (2).
4. main shaft supporting according to claim 3 and transmission device, is characterized in that: between described main shaft (1) and bearing (2), bearing (2) and driving ring (3), be interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433579.6A CN103511471A (en) | 2013-09-22 | 2013-09-22 | Main shaft bearing and transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433579.6A CN103511471A (en) | 2013-09-22 | 2013-09-22 | Main shaft bearing and transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103511471A true CN103511471A (en) | 2014-01-15 |
Family
ID=49894718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310433579.6A Pending CN103511471A (en) | 2013-09-22 | 2013-09-22 | Main shaft bearing and transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103511471A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454978A (en) * | 2014-10-29 | 2015-03-25 | 北京可以科技有限公司 | Force bearing device based on annularly-distributed multistage bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536347A (en) * | 1978-09-06 | 1980-03-13 | Ichikawa Tekkosho:Kk | Bearing for super-high speed revolution of spindle |
| JPS55142116A (en) * | 1979-04-20 | 1980-11-06 | Ichikawa Tekkosho:Kk | Bearing for spindle rotatable at super high speed |
| JPH0396739A (en) * | 1989-08-17 | 1991-04-22 | Gye Hwan Bae | Device for supporting shaft rotating at high speed |
| CN201265641Y (en) * | 2008-10-07 | 2009-07-01 | 施文江 | Planet gear speed-increasing box with variable gear ratio |
| CN201651080U (en) * | 2010-03-11 | 2010-11-24 | 天洁集团有限公司 | Vertical shaft bearing device of rapping device |
| CN201908959U (en) * | 2010-11-24 | 2011-07-27 | 吉林市北大科技开发有限公司 | High-speed rotator supporting mechanism |
-
2013
- 2013-09-22 CN CN201310433579.6A patent/CN103511471A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536347A (en) * | 1978-09-06 | 1980-03-13 | Ichikawa Tekkosho:Kk | Bearing for super-high speed revolution of spindle |
| JPS55142116A (en) * | 1979-04-20 | 1980-11-06 | Ichikawa Tekkosho:Kk | Bearing for spindle rotatable at super high speed |
| JPH0396739A (en) * | 1989-08-17 | 1991-04-22 | Gye Hwan Bae | Device for supporting shaft rotating at high speed |
| CN201265641Y (en) * | 2008-10-07 | 2009-07-01 | 施文江 | Planet gear speed-increasing box with variable gear ratio |
| CN201651080U (en) * | 2010-03-11 | 2010-11-24 | 天洁集团有限公司 | Vertical shaft bearing device of rapping device |
| CN201908959U (en) * | 2010-11-24 | 2011-07-27 | 吉林市北大科技开发有限公司 | High-speed rotator supporting mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454978A (en) * | 2014-10-29 | 2015-03-25 | 北京可以科技有限公司 | Force bearing device based on annularly-distributed multistage bearing |
| CN104454978B (en) * | 2014-10-29 | 2017-11-14 | 北京可以科技有限公司 | A kind of bearing based on ring-shape distribution Multistage bearing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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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: 20140115 |