CN100348895C - Permanent magnet drive-pulley - Google Patents
Permanent magnet drive-pulley Download PDFInfo
- Publication number
- CN100348895C CN100348895C CNB2004101035288A CN200410103528A CN100348895C CN 100348895 C CN100348895 C CN 100348895C CN B2004101035288 A CNB2004101035288 A CN B2004101035288A CN 200410103528 A CN200410103528 A CN 200410103528A CN 100348895 C CN100348895 C CN 100348895C
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- China
- Prior art keywords
- magnet
- permanent magnet
- wheel hub
- wheel rim
- magnetic
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Abstract
The present invention relates to a permanent magnetic drive pulley which comprises a wheel hub 1, an annular wheel rim 2, a plurality of rare earth permanent magnets 3 and connectors 4, wherein the wheel hub 1 is made from insulating magnet materials; the annular wheel rim 2 is fixed to the wheel hub 1 through the connectors 4 and is formed by orderly and alternately arranging a plurality of magnetizers 5 and insulating magnets 6; moreover, the magnetizer 5 and the insulating magnets 6 which are adjacent are mutually welded into an integral body. An annular groove 7 is formed inside the radial internal surface of the insulating magnet 6 between every two adjacent magnetizers 5 on the circumference of the wheel rim 2. The rare earth permanent magnets 3 are evenly distributed and are reliably wedged in the annular grooves 7, wherein N poles and S poles of each of the rare earth permanent magnets 3 respectively and tightly adhere to the magnetizers 5 at both sides of each of the annular grooves 7. When a magnetic conductive flexible belt is covered on the outer circumference of the wheel rim 2, a plurality of magnetic path sealing rings are formed from the permanent magnets 3, the magnetizers 5 at both of the two sides of the annular groove 7, and the magnetic conductive flexible belt. Thereby, the magnetic force of the drive pulley draws the magnetic conductive belt towards the wheel rim 2, definite positive pressure is generated between the magnetic conductive belt and the wheel rim 2, and friction force between the magnetic conductive belt and the drive pulley is increased.
Description
Technical field
The present invention relates to a kind of flexible transmission belt wheel, specifically is a kind of magnetic conduction flexible belt permanent magnet drive-pulley.
Background technique
Difference according to flexible body, common drive pulley can be divided into synchronous pulley, metal tape drive pulley, belt transmission belt wheel etc., these belt wheels are a transmitting movement and power all, belt wheel itself is produce power not, therefore, the size of transferring power is removed outside the Pass intensity with flexible body has, and just depends on the structure (as the profile of tooth of synchronous belt wheel, the surface configuration of metal tape drive pulley) of belt wheel and the tension force (as the preliminary tension of belt pulley) of flexible body.
Chinese invention patent application CN1414267A discloses a kind of magnetic metal belt transmission, magnetic pulley wherein is made up of wheel hub, spoke, wheel rim, field coil and electric controller, electric controller comprises current regulator, contact and slip ring, slip ring is fixed on the wheel hub of belt wheel and rotates with belt wheel, contact is fixed on the support and with slip ring and contacts, and power supply is powered to the field coil that rotates with belt wheel by current regulator, contact and slip ring.This magnetic pulley is the magnetic line of force that is produced by field coil, forms flux loop by spoke and metal tape, thereby produces the electromagnetic attraction to metal tape.Yet the electromagnetic attraction of this magnetic pulley can fluctuate along with the size of electric current, and magnetic force is non-constant, and contact and the long-term fretting wear of slip ring, easily produces faults such as spark because of bad connection.
Summary of the invention
The object of the present invention is to provide a kind of permanent magnet drive-pulley, itself can produce magnetic force, and magnetic force constant, is not subjected to external interference, and failure factor is few.When flexible body was magnetic conducting band, the magnetic force that belt wheel produces pulled to the belt wheel surface with magnetic conducting band, produces certain positive pressure.Like this, during the flexible body transmission, the frictional force between flexible belt and the belt wheel, the also power that promptly transmits, the positive pressure that produces with the preliminary tension acting in conjunction of the magnetic force of belt wheel and flexible belt is directly proportional.Therefore, under the constant operating mode of preliminary tension, permanent magnet drive-pulley of the present invention can transmit bigger power than common belt wheel.
Permanent magnet drive-pulley of the present invention comprises a wheel hub, annular flange, polylith rare earth permanent magnet piece and a coupling.Wheel hub is formed by exhausted magnet material casting.Annular flange is formed and adjacent magnet case is welded to each other with exhausted magnet and forms an integral body by the multi-disc magnet case is alternate successively with exhausted magnet.On the circumference of wheel rim, between adjacent per two magnet cases, be formed with a circular groove in the inside of the inner radial surface of cutting off magnet.Polylith rare earth permanent magnet piece evenly lays successively and reliably wedging is in circular groove, and its N, the S utmost point are close to the magnet case of wheel rim circular groove both sides respectively.Annular flange is fixed on the wheel hub by coupling.
Described belt wheel produces magnetic attraction to the magnetic conducting band that covers on the described annular flange in use.
The excircle of described wheel hub is provided with a wide annular groove, and described annular flange is placed and is fixed in this groove.
Described annular flange is cut into two semicircular ring, so that be assembled on the wheel hub.
Permanent magnet drive-pulley of the present invention, it produces the magnetic line of force by the rare earth permanent magnet piece, and by the magnet case and the magnetic conducting band formation flux loop of rare earth permanent magnet piece both sides, thereby generation is to the magnetic force of metal tape.Compare with the magnetic pulley in the background technique, permanent magnet drive-pulley magnetic force constant of the present invention is not subjected to external interference, and failure factor is few.
Description of drawings
Fig. 1 is the sectional drawing of permanent magnet drive-pulley of the present invention;
Fig. 2 is the partial sectional view of permanent magnet drive-pulley of the present invention;
Fig. 3 is the structural representation of rare earth permanent magnet piece of the present invention.
Embodiment
Shown in Fig. 1-2, permanent magnet drive-pulley of the present invention comprises a wheel hub 1, annular flange 2, polylith rare earth permanent magnet piece 3 and a coupling 4.Wherein, wheel hub 1 is formed by exhausted magnet material casting.Annular flange 2 is by multi-disc magnet case 5 and exhausted magnet 6 is alternate successively forms, and adjacent magnet case 5 is welded to each other (8 are weld seam among the figure) with exhausted magnet 6, thereby forms an integral body, and annular flange 2 is cut into two semicircular ring, so that be assembled on the wheel hub 1.Annular flange 2 is fixed on the wheel hub 1 by coupling 4 (such as set screw).
On the circumference of wheel rim 2, between adjacent per two magnet cases 5, be formed with a circular groove 7 in the inside of the inner radial surface of cutting off magnet 6.Polylith rare earth permanent magnet piece 3 evenly lays successively and reliably wedging is in circular groove 7, and its N, the S utmost point are close to the magnet case 5 of wheel rim circular groove 7 both sides respectively.
Can be provided with a wide annular groove 9 on the excircle of wheel hub 1, annular flange 2 is placed and is fixed in this groove 9.
Fig. 3 is the schematic representation of rare earth permanent magnet piece 3.
Working principle of the present invention is, in transmission, when the flexible belt of magnetic conduction covers on the outer peripheral surface of wheel rim, magnet case 5 and magnetic conduction flexible belt by rare earth permanent magnet piece 3, wheel rim circular groove both sides are formed magnetic circuit closed ring, thereby produce the attraction force of wheel rim to magnetic conducting band, the magnetic conduction flexible belt is pulled to the periphery of wheel rim, produce certain positive pressure between the two, increase the frictional force between magnetic conduction flexible belt and the rare earth permanent magnet belt wheel.
Claims (4)
1. permanent magnet drive-pulley, comprise a wheel hub (1), an annular flange (2) and coupling (4), wheel hub (1) is made by exhausted magnet material, annular flange (2) is fixed on the wheel hub (1) by coupling (4), described annular flange (2) is by multi-disc magnet case (5) and exhausted magnet (6) is alternate successively forms, and adjacent magnet case (5) is welded to each other with exhausted magnet (6) and forms an integral body; It is characterized in that: also comprise polylith rare earth permanent magnet piece (3); On the circumference of described wheel rim (2), between adjacent per two magnet cases (5), form a circular groove (7) in the inside of the inner radial surface of cutting off magnet (6); Described polylith rare earth permanent magnet piece (3) evenly lays and reliably wedging is in described circular groove (7), and its N, the S utmost point are close to the magnet case (5) of wheel rim circular groove (7) both sides respectively.
2. permanent magnet drive-pulley according to claim 1 is characterized in that: described belt wheel produces magnetic attraction to the magnetic conducting band that covers on the described annular flange (2) in use.
3. permanent magnet drive-pulley according to claim 1 and 2 is characterized in that: the excircle of described wheel hub (1) is provided with a wide annular groove (9), and described annular flange (2) is placed and is fixed in this groove.
4. permanent magnet drive-pulley according to claim 1 and 2 is characterized in that: described annular flange (2) was cut into two semicircular ring before being assembled on the wheel hub (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101035288A CN100348895C (en) | 2004-12-30 | 2004-12-30 | Permanent magnet drive-pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101035288A CN100348895C (en) | 2004-12-30 | 2004-12-30 | Permanent magnet drive-pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661265A CN1661265A (en) | 2005-08-31 |
| CN100348895C true CN100348895C (en) | 2007-11-14 |
Family
ID=35010742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101035288A Expired - Fee Related CN100348895C (en) | 2004-12-30 | 2004-12-30 | Permanent magnet drive-pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100348895C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4067438A (en) * | 1973-09-04 | 1978-01-10 | Emhart Industries, Inc. | Magnetic drive for conveyor |
| CN2152942Y (en) * | 1993-04-12 | 1994-01-12 | 刘振礼 | Rare-earth permanent-magnet belt pulley |
| CN1414267A (en) * | 2001-10-31 | 2003-04-30 | 罗善明 | Magnetic metal belt driving |
-
2004
- 2004-12-30 CN CNB2004101035288A patent/CN100348895C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4067438A (en) * | 1973-09-04 | 1978-01-10 | Emhart Industries, Inc. | Magnetic drive for conveyor |
| CN2152942Y (en) * | 1993-04-12 | 1994-01-12 | 刘振礼 | Rare-earth permanent-magnet belt pulley |
| CN1414267A (en) * | 2001-10-31 | 2003-04-30 | 罗善明 | Magnetic metal belt driving |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1661265A (en) | 2005-08-31 |
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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: 20071114 Termination date: 20101230 |