CN106341028B - linear motor - Google Patents
linear motor Download PDFInfo
- Publication number
- CN106341028B CN106341028B CN201610806859.0A CN201610806859A CN106341028B CN 106341028 B CN106341028 B CN 106341028B CN 201610806859 A CN201610806859 A CN 201610806859A CN 106341028 B CN106341028 B CN 106341028B
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- CN
- China
- Prior art keywords
- inner tube
- mover
- linear motor
- bearing
- magnet
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Linear Motors (AREA)
Abstract
The present invention relates to a kind of linear motors, comprising: mover inner tube is strip tubular structure；Stator inner tube is strip tubular structure, and the stator inner tube set is set to outside the mover inner tube, and the stator inner tube and the mover inner tube are separately；And sliding bearing, between the mover inner tube and the stator inner tube, the sliding bearing includes outer race and bearing inner ring, and the outer race is sheathed on outside the bearing inner ring, is interference fit between the outer race and the bearing inner ring；There are gap between the outer race and the inner wall of the stator inner tube, the bearing inner ring is connected with the mover inner tube.Above-mentioned linear motor, give mover inner tube certain support force by sliding bearing, so that mover inner tube is in sliding process, the eccentric force generated by magnetic can be overcome, reduce the frictional dissipation as caused by bias, the service life for effectively increasing linear motor, especially suitable for high-power linear motor field.
Description
Technical field
The present invention relates to motor fields, more particularly to linear motor.
Background technique
Linear motor is also referred to as linear electric machine, linear motor, line motor, pusher motor.Linear motor is a kind of by electric energy
It is directly changed into linear motion mechanical energy, without the transmission device of any intermediate conversion mechanism.
In linear motor field, especially high thrust linear motor, stator and mover are clearance fit.Due to magnetic
The presence of power, mover and stator are always in the state of decentraction.Due to the influence of structure, when can make motor operation, mover one
It is directly in eccentric state, abrasion unilateral in linear motor is will lead in this way, shortens the service life of linear motor.
Summary of the invention
Based on this, it is necessary to which eccentric force can be overcome to reduce the linear motor of eccentric wear by providing one kind.
A kind of linear motor, comprising:
Mover inner tube is strip tubular structure；
Stator inner tube, is strip tubular structure, and the diameter of the stator inner tube is greater than the diameter of the mover inner tube, institute
Stator inner tube set is stated outside the mover inner tube, and the stator inner tube and the mover inner tube are separately；And
Sliding bearing, between the mover inner tube and the stator inner tube, the sliding bearing includes outer race
And bearing inner ring, the outer race are sheathed on outside the bearing inner ring, the outer race and the bearing inner ring passed through
It is full of cooperation, so as to mutually fix between the outer race and the bearing inner ring；The outer race and the stator inner tube
There are gap between inner wall, the bearing inner ring is connected with the mover inner tube.
The sliding bearing is multiple in one of the embodiments, and multiple sliding bearings are along the mover inner tube
Axially spaced-apart arrangement.
It in one of the embodiments, further include magnet, the magnet is cyclic structure, and the magnet is sheathed on described dynamic
Outside sub- inner tube.
In one of the embodiments, in interval of the magnet between multiple sliding bearings.
The magnet is multiple in one of the embodiments, and multiple magnet are arranged along the axially spaced-apart of the mover inner tube
Column.
It in one of the embodiments, further include magnetic guiding loop, the magnetic guiding loop is cyclic structure, and the magnetic guiding loop is sheathed on
Outside the mover inner tube.
The magnetic guiding loop is multiple in one of the embodiments, and multiple magnetic guiding loops replace with multiple magnet
Interval setting, and multiple magnetic guiding loops and multiple magnet are along the axial alignment of the mover inner tube.
It in one of the embodiments, further include mover outer tube, the mover outer tube is strip tubular structure, described dynamic
Sub- outer tube wraps up the magnet and the magnetic guiding loop, and the mover outer tube and the stator inner tube are separately.
The bearing inner ring is made of permeability magnetic material in one of the embodiments,.
The outer race is made of tin bronze in one of the embodiments,.
Above-mentioned linear motor gives mover inner tube certain support force, so that mover inner tube is in cunning by sliding bearing
During dynamic, the eccentric force generated by magnetic can be overcome, remain center, reduce and rubbed as caused by bias
It wears consumption, the service life of linear motor is effectively increased, especially suitable for high-power linear motor field.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The attached drawing of other embodiments is obtained according to these attached drawings.
Fig. 1 is the cross-sectional view of the linear motor of one embodiment of the invention；
Fig. 2 is the partial enlarged view of linear motor shown in Fig. 1；And
Fig. 3 is the cross-sectional view of sliding bearing in linear motor shown in Fig. 1.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Also referring to Fig. 1, the linear motor 100 of one embodiment of the invention, including mover inner tube 110, stator inner tube 120
And sliding bearing 130.
Mover inner tube 110 is strip tubular structure.Stator inner tube 120 is also strip tubular structure.Stator inner tube 120
Diameter be greater than mover inner tube 110 diameter.Stator inner tube 120 is sheathed on outside mover inner tube 110, and mover inner tube 110 being capable of phase
To stator inner tube 120 along the axial linear slide of stator inner tube 120.Stator inner tube 120 and mover inner tube 110 are separately.
Sliding bearing 130 is between mover inner tube 110 and stator inner tube 120.Please refer to figs. 2 and 3 together, sliding axle
Holding 130 includes outer race 132 and bearing inner ring 134.Outer race 132 is sheathed on outside bearing inner ring 134, outer race 132
With bearing inner ring 134 by interference fit, so as to mutually be fixed between outer race 132 and bearing inner ring 134.Also referring to figure
2, there are gap between outer race 132 and the inner wall of stator inner tube 120, bearing inner ring 134 is connected with mover inner tube 110.
It is to be noted that the gap between outer race 132 and the inner wall of stator inner tube 120 is very subtle.
Above-mentioned linear motor 100 gives mover inner tube 110 certain support force, so that mover by sliding bearing 130
Inner tube 110 can overcome the eccentric force generated by magnetic in sliding process, reduce the damage that rubs as caused by bias
Consumption, effectively increases the service life of linear motor 100.
Simultaneously as sliding bearing 130 has self-lubricating capacities, can also reduce outer race 132 and stator inner tube 120 it
Between frictional dissipation.
In order to uniformly be supported to mover inner tube 110, sliding bearing 130 can be multiple.Multiple 130 edges of sliding bearing
The axially spaced-apart of mover inner tube 110 arranges, and carries out good support with the mover inner tube 110 to strip tubular structure, prevents
It is influenced by eccentric force.
Referring to Fig. 1 and Fig. 2, linear motor 100 further includes magnet 140.Magnet 140 is cyclic structure.Magnet 140
It is sheathed on outside mover inner tube 110.Magnet 140 is used to provide magnetic field for linear motor 100.
Magnet 140 is multiple, axially spaced-apart arrangement of multiple magnet 140 along mover inner tube 110.Specifically, magnet 140
In interval between multiple sliding bearings 130.
It should be pointed out that the needs of bearing inner ring 134 are made of permeability magnetic material.Specifically in the present embodiment, outer race
132 are made of tin bronze, and can add metal molybdenum, tungsten, titanium and molybdenum disulfide in its material according to a certain percentage, to reach resistance to
Mill, corrosion resistant effect.
Linear motor 100 further includes magnetic guiding loop 150.Magnetic guiding loop 150 is cyclic structure, and magnetic guiding loop 150 is sheathed in mover
Outside pipe 110.Magnetic guiding loop 150 can increase the magnetic field strength of gap location, also, magnetic guiding loop 150 can play the role of magnetic conduction, make
Magnetic circuit forms closed loop.
Specifically in the present embodiment, magnetic guiding loop 150 is multiple, and multiple magnetic guiding loops 150 are set with multiple 140 alternate intervals of magnet
It sets, and multiple magnetic guiding loops 150 and multiple magnet 140 are along the axial alignment of mover inner tube 110.
Linear motor 100 may also include mover outer tube 160.Mover outer tube 160 is strip tubular structure, mover outer tube
160 package magnet 140 and magnetic guiding loop 150.Mover outer tube 160 and stator inner tube 120 separately so that mover outer tube when sliding
Friction will not be generated between 160 and stator inner tube 120.
Above-mentioned linear motor 100 gives mover inner tube 110 certain support force, so that mover by sliding bearing 130
Inner tube 110 can overcome the eccentric force generated by magnetic, remain center in sliding process, reduce due to
Frictional dissipation caused by bias effectively increases the service life of linear motor 100, especially suitable for high-power linear motor field.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of linear motor characterized by comprising
Mover inner tube is strip tubular structure；
Stator inner tube is strip tubular structure, and the diameter of the stator inner tube is greater than the diameter of the mover inner tube, described fixed
Sub- inner tube set is set to outside the mover inner tube, and the stator inner tube and the mover inner tube are separately；And
Sliding bearing, between the mover inner tube and the stator inner tube, the sliding bearing includes outer race and axis
Inner ring is held, the outer race is sheathed on outside the bearing inner ring, and the outer race is matched with the bearing inner ring by interference
It closes, so as to mutually be fixed between the outer race and the bearing inner ring；The inner wall of the outer race and the stator inner tube
Between there are gap, the bearing inner ring is connected with the mover inner tube.
2. linear motor according to claim 1, which is characterized in that the sliding bearing is multiple, multiple slidings
Bearing is arranged along the axially spaced-apart of the mover inner tube.
3. linear motor according to claim 2, which is characterized in that further include magnet, the magnet is cyclic structure, institute
Magnet is stated to be sheathed on outside the mover inner tube.
4. linear motor according to claim 3, which is characterized in that the magnet is between multiple sliding bearings
Interval in.
5. linear motor according to claim 3, which is characterized in that the magnet be it is multiple, multiple magnet are along described dynamic
The axially spaced-apart of sub- inner tube arranges.
6. linear motor according to claim 5, which is characterized in that further include magnetic guiding loop, the magnetic guiding loop is cyclic annular knot
Structure, the magnetic guiding loop are sheathed on outside the mover inner tube.
7. linear motor according to claim 6, which is characterized in that the magnetic guiding loop is multiple, multiple magnetic guiding loops
It is arranged with multiple magnet alternate intervals, and multiple magnetic guiding loops and multiple magnet are along the axial direction of the mover inner tube
Arrangement.
8. linear motor according to claim 6, which is characterized in that further include mover outer tube, the mover outer tube is length
Bar shaped tubular structure, the mover outer tube wrap up the magnet and the magnetic guiding loop, and in the mover outer tube and the stator
Pipe is separately.
9. linear motor according to claim 1, which is characterized in that the bearing inner ring is made of permeability magnetic material.
10. linear motor according to claim 9, which is characterized in that the outer race is made of tin bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806859.0A CN106341028B (en) | 2016-09-05 | 2016-09-05 | linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806859.0A CN106341028B (en) | 2016-09-05 | 2016-09-05 | linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106341028A CN106341028A (en) | 2017-01-18 |
| CN106341028B true CN106341028B (en) | 2019-01-15 |
Family
ID=57823814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610806859.0A Active CN106341028B (en) | 2016-09-05 | 2016-09-05 | linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106341028B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002142434A (en) * | 2000-10-31 | 2002-05-17 | National Institute Of Advanced Industrial & Technology | Linear motor bearing, linear motor or axial motor and linear motor car or high-speed levitated vehicle |
| CN101431273A (en) * | 2008-12-09 | 2009-05-13 | 深圳市大族精密机电有限公司 | Oil-submersible linear motor |
| CN104779770A (en) * | 2015-04-28 | 2015-07-15 | 大族激光科技产业集团股份有限公司 | Submersible linear motor and rotor thereof |
| CN105743317A (en) * | 2014-12-09 | 2016-07-06 | 北京上和瑞科技有限公司 | Reciprocating cylinder linear motor of mover and stator wearing leveling |
-
2016
- 2016-09-05 CN CN201610806859.0A patent/CN106341028B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002142434A (en) * | 2000-10-31 | 2002-05-17 | National Institute Of Advanced Industrial & Technology | Linear motor bearing, linear motor or axial motor and linear motor car or high-speed levitated vehicle |
| CN101431273A (en) * | 2008-12-09 | 2009-05-13 | 深圳市大族精密机电有限公司 | Oil-submersible linear motor |
| CN105743317A (en) * | 2014-12-09 | 2016-07-06 | 北京上和瑞科技有限公司 | Reciprocating cylinder linear motor of mover and stator wearing leveling |
| CN104779770A (en) * | 2015-04-28 | 2015-07-15 | 大族激光科技产业集团股份有限公司 | Submersible linear motor and rotor thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106341028A (en) | 2017-01-18 |
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