CN101320936B - Flexible coupling - Google Patents
Flexible coupling Download PDFInfo
- Publication number
- CN101320936B CN101320936B CN2008101358846A CN200810135884A CN101320936B CN 101320936 B CN101320936 B CN 101320936B CN 2008101358846 A CN2008101358846 A CN 2008101358846A CN 200810135884 A CN200810135884 A CN 200810135884A CN 101320936 B CN101320936 B CN 101320936B
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- China
- Prior art keywords
- outer tube
- permanent magnet
- inner tube
- sleeve
- inwall
- 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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- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention relates to a sleeve, particularly to a flexible sleeve, including an inner tube and an outer tube sleeved together, characterized in that, the inwall of the outer tube is fixed with an outer tube permanent magnet, and the outerwall of the inner tube is fixed with an inner tube permanent magnet. Two ends of the outer tube permanent magnet are respectively provided with a guide sleeve and a sealing sleeve, which are fixedly connected on the inwall of the outer tube, and the inner diameters of which are larger than the outer diameter of the inner tube and lower than the top of the inner tube permanent magnet. The sleeve is simple in structure and low in cost, long in service life due to no menical friction parts. The inner tube and the outer tube hold in depending on the permanent magnetic force, which effectively obstructs the vibration, prolongs the service life of the machine part of the final level. The magnetic intensity of the permanent magnet restrains the transitive maximum torque, which avoids the axial breaking caused by the impact load.
Description
Technical field
The present invention relates to a kind of shaft joint, especially a kind of flexible coupling.
Background technology
Shaft joint is commonly used to connect two coaxial pipe fittings or axle part.Common shaft joint also can transfer vibrations to subordinate when transmitting torsion, in applications such as wind-driven generators, because load variations is big, the vibration that working shaft produces is also big, transfer of vibration is very big to the infringement of parts to gearbox and generator, has a strong impact on the useful life of moving parts.The big load of moment usually causes mechanical accident.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, flexible coupling that can effectively intercept vibration.
For achieving the above object, the present invention adopts following technical scheme:
A kind of flexible coupling of the present invention comprises interior pipe and the outer tube that is sleeved on together, it is characterized in that: the inwall of outer tube is installed with the outer tube permanent magnet, pipe permanent magnet in the outer wall of interior pipe is installed with, the two ends of outer tube permanent magnet are provided with fairlead and sealing shroud respectively.
Above-mentioned fairlead and sealing shroud are fixedly connected on the inwall of outer tube, and the internal diameter of fairlead and sealing shroud is all greater than the external diameter of interior pipe, and the top of pipe permanent magnet in being lower than.
This shaft joint is simple in structure, and production cost is low.Since part in addition without mechanical friction, long service life.Rely on permanent magnetism power to make interior pipe and outer tube keep to intercept vibration effectively synchronously, prolong the useful life of final stage parts.The intensity of permanent magnet magnetic has limited the peak torque of transmitting, and can avoid impact load to cause breaking axis.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the present of invention;
Fig. 2 is the A-A cutaway view of Fig. 1.
Embodiment
As shown in drawings, a kind of flexible coupling of the present invention comprises interior pipe 1 and the outer tube 2 that is sleeved on together.Interior pipe 1 and outer tube 2 adopt permeability magnetic materials to make, so that produce closed magnetic loop between the adjacent permanent magnet.The inwall of outer tube 2 is installed with outer tube permanent magnet 21, pipe permanent magnet 11 in the outer wall of interior pipe 1 is installed with.Outer tube permanent magnet 21 and interior pipe permanent magnet 11 are provided with in pairs, evenly distribute along circumference.Can be as shown in Figure 2,90 degree at interval respectively are provided with pipe permanent magnet 11 in 4 outer tube permanent magnets 21 and 4.Also 180 degree at interval respectively are provided with pipe permanent magnet 11 in 2 outer tube permanent magnets 21 and 2.Certainly, also can be provided with more.
As shown in Figure 1, the two ends of outer tube permanent magnet 21 are provided with fairlead 3 and sealing shroud 4 respectively.
Fairlead 3 and sealing shroud 4 adopts non-magnetic high-abrasive material to make, be fixedly connected on the inwall of outer tube 2, and the internal diameter of fairlead 3 and sealing shroud 4 be all greater than the external diameter of interior pipe 1, and the top of pipe permanent magnet 11 in being lower than.Be to have certain interval between the internal diameter of fairlead 3 and sealing shroud 4 and the interior pipe 1, this gap should like this, can avoid outer tube permanent magnet 21 and interior pipe permanent magnet 11 to collide mutually less than the gap between outer tube permanent magnet 21 and the interior pipe permanent magnet 11.
Certainly, in also fairlead 3 and sealing shroud 4 can being fixedly connected on the outer wall of pipe 1, its effect be fixed on outer tube 2 on identical.
During use, by ring flange interior pipe 1 and outer tube 2 are installed in to be connected shaft end respectively, adjust the axle center, pipe 1 is sleeved on the inside of outer tube 2 in making, and makes outer tube permanent magnet 21 relative with the magnetic pole of interior pipe permanent magnet 11.Like this, because the effect that there is a natural attraction between the sexes, the same sex is repelled each other between the permanent magnet, relative rotation takes place with outer tube 2 in pipe 1 in stoping, and drives the driven shaft rotation when making the driving shaft rotation, reaches the effect that connects rotating shaft, transfer torque.
Owing to leave the gap between outer tube permanent magnet 21 and the interior pipe permanent magnet 11, can not arrive the other end to shock transfer when limited vibrations at one end take place, thereby alleviate mechanical damage, increase the service life.
Claims (1)
1. flexible coupling, comprise the interior pipe (1) and the outer tube (2) that are sleeved on together, be installed with outer tube permanent magnet (21) on the inwall of outer tube (2), pipe permanent magnet (11) in being installed with on the outer wall of interior pipe (1), the two ends of outer tube permanent magnet (21) are provided with fairlead (3) and sealing shroud (4) respectively, it is characterized in that: described fairlead (3) and sealing shroud (4) are fixedly connected on the inwall of outer tube (2); The internal diameter of fairlead (3) and sealing shroud (4) is all greater than the external diameter of interior pipe (1), and there is certain interval in the inwall of fairlead (3) and sealing shroud (4) and interior pipe (1), and this gap is less than the gap between outer tube permanent magnet (21) and the interior pipe permanent magnet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101358846A CN101320936B (en) | 2008-07-15 | 2008-07-15 | Flexible coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101358846A CN101320936B (en) | 2008-07-15 | 2008-07-15 | Flexible coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101320936A CN101320936A (en) | 2008-12-10 |
| CN101320936B true CN101320936B (en) | 2010-11-10 |
Family
ID=40180830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101358846A Expired - Fee Related CN101320936B (en) | 2008-07-15 | 2008-07-15 | Flexible coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101320936B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526270A (en) * | 2016-01-18 | 2016-04-27 | 西安交通大学 | Quasi-zero stiffness coupling |
-
2008
- 2008-07-15 CN CN2008101358846A patent/CN101320936B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101320936A (en) | 2008-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20120715 |