CN103233973A - Sliding three-bush combination bearing for screw shaft - Google Patents
Sliding three-bush combination bearing for screw shaft Download PDFInfo
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- CN103233973A CN103233973A CN 201310158589 CN201310158589A CN103233973A CN 103233973 A CN103233973 A CN 103233973A CN 201310158589 CN201310158589 CN 201310158589 CN 201310158589 A CN201310158589 A CN 201310158589A CN 103233973 A CN103233973 A CN 103233973A
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- shaped bearing
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- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
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- 238000007363 ring formation reaction Methods 0.000 description 1
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Abstract
The invention relates to a flexible center bearing combination structure of a long and thin screw shaft in a screw ship unloader or other screw conveyors for vertical and large-dip-angle conveying, and in particular relates to a sliding three-bush combination bearing which is capable of absorbing unbalanced force in a high-speed screw radial direction and applied to a connection shaft between two screw shafts. The sliding three-bush combination bearing comprises an outer pipe body, wherein a bush seat is fixed to the outer pipe body; a rod-like bearing bush is arranged in the bush seat and can slide in the axial direction of the bush seat; a screw cover is fixed at the outer end of the bush seat through a thread; and one end of the rod-like bearing bush is supported on the screw cover through a spring while the other end of the rod-like bearing bush is supported on the connection shaft of the screw shafts. The rod-like bearing bush not only has the effect of supporting the screw shafts but also can adapt to the characteristic that the shaft line of a shaft system rocks randomly in the radial direction when the shaft system rotates, and meanwhile, the spring is adopted to absorb additional radial unbalanced force caused by asymmetric quality distribution so as to avoid abnormal wear caused by excessively large surface extrusion force of a friction pair and machine vibration or rocking caused by the unbalanced force.
Description
Technical field
The present invention relates to the flexible intermediate support composite structure of screw ship unloader or the elongated screw axis of screw conveyer that other are used for vertically, large inclined angle is carried, refer in particular to a kind of three watts of combination bearings of slip on the coupling shaft between two screw axis that are used for that can absorb the high-speed screw radial imbalance force.
Background technique
Carry mechanism according to tubulose vertical spin machine, require the interior powder of pipe to be close to tube wall, the spiral in just being rotated is then pushed top to, and the radial force of being close to tube wall then drives powder from spiral and rotates the centrifugal force of generation at a high speed.It is generally acknowledged to the certain diameter spiral have only when its rotating speed greater than critical speed of rotation, centrifugal force is enough big, powder could upwards be carried.In order to improve transfer efficiency, be chosen in usually between 350-500rpm during the revolution speed of screw design, the total length of spiral is at 10-30m, and quality is by the extremely thousands of kilograms of hundreds of kilograms.Can imagine: so big quality slender axles, only depend on two supports to realize that the high-speed smooth rotation is very difficult, therefore must be along spiral axially establish place's intermediate support every 4-5m.Existing various intermediate support mostly is rigidity bearing shell type sliding bearing both at home and abroad, the bearing shell number mostly is 2, also there are 4 slices, the supporting position many at two screw axis on coupling shaft 1 neck of joint, a watt seat 1-4 who is installed on the carrier pipe 1-1 wall stretches in the pipe, bearing shell 1-3, FE Tiler 1-5 can be wrapped up be connected axle 1 axle journal, form supporting, shown in Figure 1 as accompanying drawing; Also have at the connection axle journal and adorn the reinforced wear-resisting short spiral leaf 2-3 of a pair of Hough shape, and form intermediate support with the periphery of this helical blade with the adjustable bearing shell 2-2 that is installed on the carrier pipe 2-1 inwall, shown in Figure 3 as accompanying drawing.Be subjected to factor affecting such as screw conveyer self rigidity, structure, applying working condition, manufacturing and installation precision, this class intermediate support coaxial precision in service is lower, thus easy to wear, life-span weak point, and with bigger vibration and noise.Can not be for vertical spin machine high speed slender axles provide than high-axiality, the elongated screw axis of high speed is as a bigger solid of rotation simultaneously, and sole mass distributes also can not be definitely symmetrically, and the radial imbalance force that produces during rotation improves with rotating speed and increases.
Summary of the invention
For overcoming the above problems, the invention provides a kind of simple in structure, coaxial precision height, thus and can absorb three watts of combination bearings of slip that radial imbalance force can smooth working.
A kind of three watts of combination bearings of slip for screw axis, comprise outer tube body, a watt seat is fixedly arranged on the described outer tube body, watt seat is provided with bar-shaped bearing shell, bar-shaped bearing shell is located in watt seat and can endwisely slips along a watt seat, fixedly there is blind nut watt seat outer end by screw thread, and on blind nut, the bar-shaped bearing shell the other end is bearing on the coupling shaft of screw axis bar-shaped bearing shell one end by spring-loaded.
Further, 3 watt seats with cambered surface watt shape head are arranged fixedly on the described outer tube body, all be provided with bar-shaped bearing shell on 3 watts of seats, and 3 watts of seats are the 120o angle respectively.
Further, described bar-shaped bearing shell top is provided with tapped hole, and the hollow guide rod that passes blind nut and spring successively is installed on the tapped hole.
Further, the external cylindrical surface of described bar-shaped bearing shell is provided with axial oil groove, and oil groove communicates with the hollow guide rod through the inner duct of bar-shaped bearing shell.
Further, bar-shaped bearing shell is provided with axial spline groove, and spline pin one end is fixed on watt seat, and the other end is inserted in the spline groove.
Further, the supporting surface that described bar-shaped bearing shell is bearing in an end of screw axis is an identical arc surface of axle journal diameter with screw axis, and this supporting surface is provided with carbide mosaic spare.
Further, described watt of seat comprises for the connection external member that blind nut is installed.
Further, described blind nut and watt seat are connected the degree of depth by threaded adjusting and come load on the control spring.
Further, described three watts of seats are close to the cylindrical hole that composition surrounds screw axis mutually.
Further, the cylindrical hole both ends of the surface that three watts of seats are close to composition mutually are provided with circular heavy hole, are provided with the Hough floating ring in the hole, and cover the labyrinth seal of Hough floating ring formation with the Hough gland.
Beneficial effect of the present invention is: the characteristic that bar-shaped bearing shell had not only play supporting role to screw axis but also its radial axis is rocked at random when adapting to the rotation of axle system, adopt spring can absorb the additional radial imbalance force that causes because of the asymmetric distribution of quality simultaneously, avoid the surface of friction pair extruding force excessively to cause machine vibration that irregular wear and this unbalanced force cause, rock.Experiment shows that machine turns round near 500rpm, almost do not have visual vibration and rock, and noise is lower than 80 decibels, and effect is extremely desirable.
Description of drawings
Fig. 1 is the cross-sectional view of the present rigidity bearing shell type sliding bearing that uses;
Fig. 2 is the A1-A1 cross-sectional view of Fig. 1;
Fig. 3 adopts the reinforced short spiral leaf outer rim of Hough shape to make the bearing cross-sectional view of supporting at present;
Fig. 4 is the A2-A2 cross-sectional view of Fig. 3;
The cross-sectional view of Fig. 5 embodiment of the invention 1;
The cross-sectional view of Fig. 6 embodiment of the invention 2;
Fig. 7 is A portion enlarged view among Fig. 6;
The cross section structure schematic representation of 2 watts of seats of Fig. 8 embodiment of the invention;
Fig. 9 is the A3-A3 cross-sectional view of Fig. 7.
Embodiment
By reference to the accompanying drawings 5, a kind of three watts of combination bearings of slip for screw axis, comprise outer tube body 3, on the described outer tube body 3 watt seat 5 is arranged fixedly, watt seat 5 is provided with bar-shaped bearing shell 6, bar-shaped bearing shell 6 is located in watt seat 5 and can endwisely slips along watt seat 5, and watt seat 5 tops fixedly have the described blind nut 11 of blind nut 11(can pass through threaded adjusting blind nut setting depth with watt seat 5 by screw thread.), bar-shaped bearing shell 6 one ends are bearing on the blind nut 11 by spring 10, and bar-shaped bearing shell 6 the other ends are bearing on the coupling shaft 1 of screw axis 2.
Wherein, described bar-shaped bearing shell 6 tops are provided with tapped hole, and the hollow guide rod 12 that passes blind nut 11 and spring 10 successively is installed on the tapped hole.The external cylindrical surface of described bar-shaped bearing shell 6 is provided with axial oil groove, and oil groove communicates with hollow guide rod 12 through bar-shaped bearing shell 6 inner ducts.
Preferably, bar-shaped bearing shell 6 is provided with axial spline groove, and spline pin 4 one ends are fixed on watt seat 5, and the other end is inserted in the spline groove.
Preferably, the supporting surface that described bar-shaped bearing shell 6 is bearing in an end of screw axis 1 is an identical arc surface of axle journal diameter with screw axis 1, and this supporting surface is provided with carbide mosaic spare 16.Watt seat 5 can also comprise for the connection external member 7 that blind nut 10 is installed.
Fig. 5 is a kind of combination bearing proposal plan that can absorb the high-speed screw radial imbalance force.Radially withstood by bar-shaped bearing shell 6 when connecting coupling shaft 1 high speed rotary of two screw axis 2 among the figure, if bar-shaped bearing shell 6 be rigidity, must cause serious extruding and wearing and tearing between tiling and axial plane, even machine breakdown, now because of an end bearing of bar-shaped bearing shell 6 on spring 7.So passing through resiliently deformable (axial stretching), bar-shaped bearing shell 6 adapts to coupling shaft 1 low coaxality revolution, and the centrifugal force deflection deformation of whole screw axis 2 of simultaneous adaptation because producing in the mass eccentricity revolution.Because bar-shaped bearing shell 6 is littler than common watt with the coupling shaft surface of contact, so adopt high-strength, high hard, heat-resistant material manufacturing, spline pin 4 prevents rod watt rotation in watt seat 5, blind nut 8 is not only made spring seat but also adjust body (passing through threaded adjusting) as pre-pressure of the spring, hollow guide rod 12 hollows also link to each other with outside fuel supply line, can be that this combination bearing is carried lubricant oil or fat.
Wherein accompanying drawing 6 is for clarity for 6-9(by reference to the accompanying drawings, the structure of only drawing a bar-shaped bearing shell 6, two other structure is identical, angle becomes 120o, 3 Special-shaped tile seats 5 with cambered surface watt shape head are fixedly arranged on embodiment 2 the outer tube body 3 as different from Example 1, all be provided with bar-shaped bearing shell 6 on 3 watts of seats 5, and 3 watts of seats 5 are the 120o angle respectively and are close to.
Accordingly, described three watts of seats 5 are close to the cylindrical hole that composition surrounds coupling shaft 1 mutually.Preferably, with the cylindrical hole outside formation labyrinth seal of Hough gland 14 with Hough floating ring 13 lids.
The combination bearing that radial imbalance force is rotated in described energy absorption at a high speed is a kind of flexible bearing, and the radial imbalance force of geometric accuracy sum of errors variation is mainly used in vertically or the pipe screw conveyor of large inclined angle operating mode in the revolution of energy random back-off screw axis.Accompanying drawing 6-9 discloses the concrete structure of present embodiment, and it brings into play its function with the form of assembly.Two flanges of coupling shaft 1 are respectively applied to coaxial connection screw axis 2 among the figure, and the axle journal of coupling shaft 1 is bumped into cemented carbide or other enhancements; Bar-shaped bearing shell 6 is cylindrical body, can in rod watt cover for seat 5, axially slide, bar-shaped bearing shell 6 withstands coupling shaft 1 from three directions of distribution 120o, and coupling shaft 1 theoretic rotational axis is the straight line by coupling shaft center of circle O, and actual rotational axis changes in the roundlet that with the O point is the center of circle.The bar-shaped bearing shell 6 that distributes of the 120o coupling shaft 1 radially geometric accuracy skew and the centrifugal force of any direction that are conducive to compensate screw axis 2 radially.
In addition, spline pin 4 can prevent rod watt radially rotation, and the supporting surface of described bar-shaped bearing shell 6 outer ends is arc surfaces, and is identical with the axle journal diameter of coupling shaft 1, and also is bumped into cemented carbide or other enhancements; The other end of bar-shaped bearing shell 6 is shaped on tapped hole, and in order to connect hollow guide rod 12, the external cylindrical surface of bar-shaped bearing shell 6 is shaped on axial oil groove and spline groove, and oil groove communicates with hollow guide rod 12 through the duct of bar-shaped bearing shell 6 heart portions, to accept outside fuel feeding or fat; Bar-shaped bearing shell 6 is adjusted shim pack 8 and is dressed up one with hollow guide rod 12, insert in watt seat 5, reinstall one group of butterfly spring 10, adjust the precompression of spring 10 with blind nut 11, described watt of seat 5(sees accompanying drawing 7-9) be a special-shaped part with cylindric handle and cambered surface watt shape head, when three watts of seats 5 point to the center from three directions of interval 120o, its three cambered surfaces watt shape head is close to mutually, the composition cylindrical hole makes watt seat 5 have integral rigidity and coupling shaft 1 is surrounded, the cylindrical hole two ends add Hough gland 14 Hough floating ring 13 are covered, make it and to escape, and constitute labyrinth seal; The cylindrical handle of watt seat 5 is used for cooperating with the corresponding aperture of connecting sleeve 7, connecting sleeve 7 again with outer tube member 3 be connected that block set 9 cooperates and with tightening nail location.At last three parts 9 are assembled into outer tube member 3(combination bearing casing) respective aperture in, and cover manhole cover 15, namely form the described combination bearing that can absorb radial imbalance force.Experiment shows that machine turns round near 500rpm, almost do not have visual vibration and rock, and noise is lower than 80 decibels, and effect is extremely desirable.
Claims (10)
1. three watts of combination bearings of slip that are used for screw axis, comprise outer tube body (3), it is characterized in that: described outer tube body (3) is gone up fixedly a watt seat (5), watt seat (5) is provided with bar-shaped bearing shell (6), bar-shaped bearing shell (6) is located in the hole of a watt seat (5) and can endwisely slips along a watt seat (5), fixedly there is blind nut (11) on watt seat (5) top by screw thread, bar-shaped bearing shell (6) one ends are bearing on the blind nut (11) by guide rod (12), spring (10), and bar-shaped bearing shell (6) the other end is bearing on the coupling shaft (1) of screw axis (2).
2. three watts of combination bearings of slip for screw axis according to claim 1, it is characterized in that: described outer tube body (3) is gone up fixedly 3 watt seats (5) with cambered surface watt shape head, bar-shaped bearing shell (6) all is housed in the cylindrical hole of 3 watts of seats (5), and 3 watts of seats (5) are the 120o angle respectively.
3. three watts of combination bearings of slip for screw axis according to claim 1 and 2, it is characterized in that: described bar-shaped bearing shell (6) top is provided with tapped hole, and the hollow guide rod (12) that passes blind nut (11) and spring (10) successively is installed on the tapped hole.
4. three watts of combination bearings of slip for screw axis according to claim 3, it is characterized in that: the external cylindrical surface of described bar-shaped bearing shell (6) is provided with axial oil groove, and oil groove communicates with hollow guide rod (12) through the inner duct of bar-shaped bearing shell (6).
5. three watts of combination bearings of slip for screw axis according to claim 1 and 2, it is characterized in that: bar-shaped bearing shell (6) is provided with axial spline groove, and spline pin (4) one ends are fixed on watt seat (5), and the other end is inserted in the spline groove.
6. three watts of combination bearings of slip for screw axis according to claim 1 and 2, it is characterized in that: the supporting surface that described bar-shaped bearing shell (6) is bearing in an end of coupling shaft (1) is an identical arc surface of axle journal diameter with coupling shaft (1), and this supporting surface is provided with carbide mosaic spare.
7. three watts of combination bearings of slip for screw axis according to claim 1 and 2 is characterized in that: described blind nut (11) and a watt seat (5) are connected the degree of depth by threaded adjusting and come load on the control spring (10).
8. three watts of combination bearings of slip for screw axis according to claim 1 and 2 is characterized in that: described watt of seat (5) comprises for the connection external member (7) that blind nut (10) is installed.
9. three watts of combination bearings of slip for screw axis according to claim 2 is characterized in that: described three watts of seats (5) are close to the cylindrical hole that composition surrounds coupling shaft (1) mutually.
10. three watts of combination bearings of slip for screw axis according to claim 9, it is characterized in that: the cylindrical hole both ends of the surface that three watts of seats (5) are close to composition mutually are provided with circular heavy hole, be provided with Hough floating ring (13) in the hole, and cover the labyrinth seal of Hough floating ring (13) formation with Hough gland (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158589.3A CN103233973B (en) | 2013-04-28 | 2013-04-28 | A kind of slip three watts of combination bearings for screw axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158589.3A CN103233973B (en) | 2013-04-28 | 2013-04-28 | A kind of slip three watts of combination bearings for screw axis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103233973A true CN103233973A (en) | 2013-08-07 |
| CN103233973B CN103233973B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310158589.3A Active CN103233973B (en) | 2013-04-28 | 2013-04-28 | A kind of slip three watts of combination bearings for screw axis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429255A (en) * | 2016-11-23 | 2017-02-22 | 杭州三螺机械设备有限公司 | Sliding intermediate supporting system for forced-cooling sliding column of spiral ship unloader |
| CN107120353A (en) * | 2017-07-07 | 2017-09-01 | 高鹏 | A kind of sliding bearing |
-
2013
- 2013-04-28 CN CN201310158589.3A patent/CN103233973B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429255A (en) * | 2016-11-23 | 2017-02-22 | 杭州三螺机械设备有限公司 | Sliding intermediate supporting system for forced-cooling sliding column of spiral ship unloader |
| CN107120353A (en) * | 2017-07-07 | 2017-09-01 | 高鹏 | A kind of sliding bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103233973B (en) | 2015-08-19 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Bao Inventor after: Gao Peng Inventor after: Zhou Yingqiang Inventor after: Wang Yixiang Inventor after: Shen Tianxing Inventor after: Wang Zhenxing Inventor after: Yuan Dong Inventor before: Zhao Bao Inventor before: Gao Peng Inventor before: Zhou Yingxiang Inventor before: Wang Yixiang Inventor before: Shen Tianxing Inventor before: Wang Zhenxing Inventor before: Yuan Dong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHAO PAN GAO PENG ZHOU YINGXIANG WANG YIXIANG SHEN TIANXING WANG ZHENXING YUAN DONG TO: ZHAO PAN GAO PENG ZHOU YINGQIANG WANG YIXIANG SHEN TIANXING WANG ZHENXING YUAN DONG |
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Effective date of registration: 20181225 Address after: 311100 Renhe Street and No. 3 Yan Road, Yuhang District, Hangzhou, Zhejiang Province Patentee after: HANGZHOU AOTUO ELECTROMECHANICAL TECHNOLOGY CO., LTD. Address before: 310000 West Lake Science Park, Sandun Town, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Auto Bulk Materials Unloading Equipment Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311100 Renhe Street and No. 3 Yan Road, Yuhang District, Hangzhou, Zhejiang Province Patentee after: Hangzhou Aotuo electromechanical Co., Ltd Address before: 311100 Renhe Street and No. 3 Yan Road, Yuhang District, Hangzhou, Zhejiang Province Patentee before: HANGZHOU AOTUO ELECTROMECHANICAL TECHNOLOGY CO., LTD. |