CN204794640U - Linear motor - Google Patents
Linear motor Download PDFInfo
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- CN204794640U CN204794640U CN201520394782.1U CN201520394782U CN204794640U CN 204794640 U CN204794640 U CN 204794640U CN 201520394782 U CN201520394782 U CN 201520394782U CN 204794640 U CN204794640 U CN 204794640U
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- magnet
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- yoke
- mover
- electric motors
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Abstract
The utility model provides a linear motor, including stator and active cell, the stator is followed the planar cross -section of YZ and is U type structure, and the active cell is equipped with the air gap in locating the U type structure of stator between stator and the active cell, the active cell includes along two sets of magnet arrays of Y axle parallel distribution, locates the active cell yoke between two sets of magnet arrays and connect the slider of active cell yoke, and every group magnet array comprises at least one halbach unit, and slider and stator sliding connection, active cell yoke adopt non - magnetic materials to make. Adopt non - magnetic materials to make the active cell yoke, the material is slim and graceful, has reduced the whole weight of motor, and loss and the problem of generating heat of having avoided eddy current effect and hysteresis effect to arouse have simultaneously improved linear motor's work efficiency, in addition, this active cell part does not have lug connection with the cable conductor, has not only simplified the structure and manufacturing complexity of motor, and it does not receive the restriction of cable conductor to move moreover, increases the stroke and the system reliability of motor.
Description
Technical field
The utility model relates to machine field, is specifically related to a kind of linear electric motors.
Background technology
Linear electric motors a kind of electric energy are directly changed into rectilinear motion mechanical energy, and without any need for the transmission device of intermediate conversion mechanism.It can be regarded as and be cut open by radial direction by an electric rotating machine, and generate plane forms.The side wherein developed by stator is as elementary, and the side developed by rotor is as secondary.When practical application, primary and secondary is manufactured different length, with ensure elementary and secondary in required stroke range between be coupled and remain unchanged.Linear electric motors can be that short elementary length is secondary, also can be long elementary short secondary.For linear induction motor: when elementary coil windings passes into AC power, just in air gap, travelling-magnetic-field is produced, under secondary ripple magnetic field intercepts of being expert at, will induce electromotive force and generation current, this electric current acts on mutually with the magnetic field in air gap and just produces electromagnetic push.If elementary fixing, then secondaryly under thrust, do rectilinear motion; Otherwise, then elementaryly rectilinear motion is done.The control system of linear electric motors not only will have linear electric motors of good performance, also must meet technology and economy joint demand under safe and reliable prerequisite.
Linear electric motors are the earliest generally single side type linear synchronous machine, as shown in Figure 1, comprise the stator 1 ' be made up of permanent magnet 11 ' and stator yoke 12 ' and the mover 2 ' be made up of mover yoke 21 ' and coil windings 22 ', mover 2 ' is located at stator 1 ' top, relative stator 1 ' carries out rectilinear motion, this kind of linear electric motors can produce huge unilateral magnetic force in running, very large difficulty is caused to the manufacture of motor and operation, simultaneously due to the side-termind effect of linear electric motors self and leakage field and larger width of air gap thereof, cause the loss of the low of operational efficiency and energy.
For above problem, double-flanged end linear electric motors are there are afterwards, as shown in Figure 2, using permanent magnet 11 ' as stator 1 ' part, using coil windings 22 ' as mover 2 ' part.But adopt the motor of this structure owing to having physical connection between coil windings 22 ' part and cable, the problem such as damage and electric leakage of cable will be caused when electric mover 2 ' is reciprocating, restrict the stroke of motor simultaneously, reduce electric system reliability of operation.Meanwhile, these linear electric motors adopt conventional method arrangement permanent magnet 11 ', and the air gap flux density of formation does not have good sine, causes forming a large amount of high order harmonic components in the air gap of motor, thus reduces the performance of motor.In addition, these linear electric motors use silicon steel sheet as the material of mover 2 ' with stator 1 ', silicon steel sheet has good magnetic conduction effect, but silicon steel sheet easily causes eddy current effect and hysteresis effect, and too high magnetic secret meeting causes the saturated phenomenon of silicon steel sheet, increase loss and heating, add the material weight of silicon steel sheet, reduce the operating efficiency of linear electric motors.
Utility model content
The utility model, in order to overcome above deficiency, provides a kind of effectively raising air gap flux density and thrust output, reduces weight and the loss of motor, improve the linear electric motors of motor performance and operating efficiency.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of linear electric motors, comprises stator and mover, and described stator is U-shaped structure along the cross section of YZ plane, described mover is located in the U-shaped structure of described stator, is provided with air gap between described stator and mover; The slide block that described mover comprises two groups of magnet arrays along the parallel distribution of Y-axis, is located at the mover yoke described in two groups between magnet array and is connected with described mover yoke, often organize described magnet array to be made up of at least one Halbach unit, described slide block and stator are slidably connected, and described mover yoke adopts non-magnet material to make.
Further, described slide block is located at the both sides up and down of described mover yoke.
Further, described slide block is fixedly connected with mover yoke by soket head cap screw.
Further, described stator comprises two groups of stator yoke corresponding with the opening of described U-shaped structure, connects the fixed head of stator yoke described in two groups and be located at the line slideway of the relative side of described stator yoke, described in two groups, stator yoke is equipped with some stator tooths relative to side, coil windings is provided with between described stator tooth, described slide block and described line slideway are slidably connected, and described air gap is between described stator tooth and magnet array.
Further, described coil windings is fixed by slot wedge and described stator tooth.
Further, described coil windings is electrically connected with three-phase alternating current.
Further, described fixed head, stator yoke and stator tooth are made up of non-magnet material.
Further, described non-magnet material is aluminium.
Further, the quantity often organizing Halbach unit in described magnet array is one.
Further, described Halbach unit is made up of three block permanent magnets, described three block permanent magnets are followed successively by the first magnet, the second magnet and the 3rd magnet or are followed successively by the 3rd magnet, the second magnet and the first magnet, described first magnet and the 3rd magnet are T-shaped along the cross section of XY plane, and the direction of magnetization of the first magnet is along Y-axis forward, the direction of magnetization of the 3rd magnet is along Y-axis negative sense, described second magnet is inverted T shape along the cross section of XY plane, and the direction of magnetization of the second magnet is along X-axis negative sense, in magnet array described in two groups, the ordering of permanent magnet is different.
The linear electric motors that the utility model provides, comprise stator and mover, and described stator is U-shaped structure along the cross section of YZ plane, and described mover is located in the U-shaped structure of described stator, is provided with air gap between described stator and mover; Described mover comprise along the parallel distribution of Y-axis two groups of magnet arrays, be located at mover yoke described in two groups between magnet array and the slide block being connected described mover yoke, often organize described magnet array to be made up of some Halbach unit, described slide block and stator are slidably connected, and described mover yoke adopts non-magnet material to make.Adopt non-magnet material to make mover yoke, material is slim and graceful, reduces the overall weight of motor, avoids loss and heating problem that eddy current effect and hysteresis effect cause simultaneously, improves the operating efficiency of linear electric motors; The air gap flux density that the magnet array adopting Halbach unit to form is formed has good sine, greatly improves the performance of linear electric motors; In addition, this subpart is not directly connected with cable, not only simplify the structure of motor and manufactures complexity, and motion is not by the restriction of cable, increases stroke and the system reliability of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing single side type linear synchronous machine;
Fig. 2 is the structural representation of existing double-flanged end linear electric motors;
Fig. 3 is the utility model ironless linear motors structural representation;
Fig. 4 is the magnetic loop schematic diagram of the utility model ironless linear motors;
Fig. 5 is the structural representation of the utility model magnet array.
Shown in Fig. 1-2: 1 ', stator; 11 ', permanent magnet; 12 ', stator yoke; 2 ', mover; 21 ', mover yoke; 22 ', coil windings.
Shown in Fig. 3-5: 1, stator; 11, stator yoke; 12, fixed head; 13, line slideway; 14, stator tooth; 15, coil windings; 2, mover; 21, magnet array; 22, mover yoke; 23, slide block; 24, Halbach unit; 241, the first magnet; 242, the second magnet; 243, the 3rd magnet; 3, air gap.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 3, a kind of linear electric motors, comprise stator 1 and mover 2, and described stator 1 is U-shaped structure along the cross section of YZ plane, and described mover 2 is located in the U-shaped structure of described stator 1, is provided with air gap 3 between described stator 1 and mover 2, described mover 2 comprises two groups of magnet arrays 21 along Y-axis (vertical direction) parallel distribution, the slide block 23 be located at the mover yoke 22 described in two groups between magnet array 21 and be connected with described mover yoke 22, often organize described magnet array 21 to be made up of at least one Halbach unit 24, described slide block 23 is slidably connected with stator 1, described mover yoke 22 adopts non-magnet material to make, non-magnet material is adopted to make mover yoke 22, be preferably aluminum, material is light, strong but pliable in texture, it also avoid loss and heating problem that eddy current effect and hysteresis effect cause, improve the operating efficiency of linear electric motors.
Please emphasis with reference to Fig. 3, described slide block 23 is located at the both sides up and down of described mover yoke 22, and preferably, described slide block 23 is fixedly connected with mover yoke 22 by soket head cap screw, slide block 23 not only plays the effect supporting mover 2, and relative stator 1 carries out rectilinear motion together with mover 2 simultaneously.
Preferably, described stator 1 comprises two groups of stator yoke 11 corresponding with the opening of described U-shaped structure, connects the fixed head 12 of stator yoke 11 described in two groups and is located at the line slideway 13 of the described relative side of stator yoke 11, stator yoke 11 described in two groups is equipped with some stator tooths 14 in side relatively, coil windings 15 is provided with between described stator tooth 14, described slide block 23 is slidably connected with described line slideway 13, and described air gap 3 is between described stator tooth 14 and magnet array 21.Concrete, stator yoke 11 is flat rectangular structure, line slideway 13 is fixed in stator yoke 11 by soket head cap screw, is made up of Steel material, and hardness is large, good stability, described fixed head 12, stator yoke 11 and stator tooth 14 are made by non-magnet material, preferably, are made up of aluminum, material is light, strong but pliable in texture; Coil windings 15 is made up of copper product, good conductivity.
Preferably, described coil windings 15 is fixed with described stator tooth 14 by slot wedge (not marking in figure) and is connected.Preferably, described coil windings 15 is electrically connected with three-phase alternating current.Concrete, coil windings 15 end is connected into Y type, and every one end is connected to corresponding one end of three-phase alternating current respectively, after three-phase alternating current is passed into coil windings 15, it is made to produce the active force along X-direction to magnet array 21, mover 2 is driven to do rectilinear motion along X-axis, because coil windings 15 is located at stator 1 but not on mover 2, this mover 2 is not directly connected with cable, not only simplify the structure of motor and manufacture complexity, and motion is not by the restriction of cable, increase stroke and the system reliability of motor.。
As shown in Figure 5, the quantity often organizing Halbach unit 24 in described magnet array 21 is one, preferably, described Halbach unit 24 is made up of three block permanent magnets, described three block permanent magnets are followed successively by the first magnet 241, second magnet 242 and the 3rd magnet 243 or be followed successively by the 3rd magnet 243, second magnet 242 and the first magnet 241, described first magnet 241 and the 3rd magnet 243 are T-shaped along the cross section of XY plane, and the direction of magnetization of the first magnet 241 is along Y-axis forward, the direction of magnetization of the 3rd magnet 243 is along Y-axis negative sense, described second magnet 242 is inverted T shape along the cross section of XY plane, and the direction of magnetization of the second magnet 242 is along X-axis negative sense, in described two groups of magnet arrays 21, the ordering of permanent magnet is different, as shown in Figure 4, the first magnet 241 is followed successively by from left to right in upper strata magnet array 21, second magnet 242 and the 3rd magnet 243, the 3rd magnet 243 is followed successively by from left to right in underlying magnets array 21, second magnet 242 and the first magnet 241.As shown in Figure 5, the magnetic line of force, from the N pole of left side magnet, successively through air gap 3, stator tooth 14, stator yoke 11, stator tooth 14 and air gap 3, the S pole getting back to right side magnet, forms a magnetic loop.Due to the single-edge magnetic screen effect of Halbach unit 24, the magnetic line of force of two groups of magnet arrays 21 near side is caused to cancel out each other, the opposite side magnetic line of force is strengthened, therefore the magnetic of magnet array 21 near mover yoke 22 place is close ignores, magnetic near air gap 3 place is close, strengthens, the power output of linear electric motors is increased, and failure rate reduces.In addition, because permanent magnet adopts irregular T-shaped or inverted T shape structure, compare the rectangle permanent magnet of rule, the air gap flux density that this structure produces has better sine, lower harmonic content, greatly reduce force oscillation and the loss of motor output, further increase stability and the operating efficiency of motor.
In sum, the ironless linear motors that the utility model provides, adopts non-magnet material to make mover yoke 22, material is slim and graceful, reduce the overall weight of motor, avoid loss and heating problem that eddy current effect and hysteresis effect cause simultaneously, improve the operating efficiency of linear electric motors; The air gap flux density that the magnet array 21 adopting Halbach unit 24 to form is formed has good sine, greatly improves the performance of linear electric motors; In addition, this mover 2 is not directly connected with cable, not only simplify the structure of motor and manufactures complexity, and motion is not by the restriction of cable, increases stroke and the system reliability of motor.
Although be illustrated execution mode of the present utility model in specification, these execution modes just as prompting, should not limit protection range of the present utility model.In the scope not departing from the utility model aim, carry out various omission, displacement and change all should be included in protection range of the present utility model.
Claims (10)
1. linear electric motors, comprise stator and mover, it is characterized in that, described stator is U-shaped structure along the cross section of YZ plane, and described mover is located in the U-shaped structure of described stator, is provided with air gap between described stator and mover; The slide block that described mover comprises two groups of magnet arrays along the parallel distribution of Y-axis, is located at the mover yoke described in two groups between magnet array and is connected with described mover yoke, often organize described magnet array to be made up of at least one Halbach unit, described slide block and stator are slidably connected, and described mover yoke adopts non-magnet material to make.
2. linear electric motors according to claim 1, is characterized in that, described slide block is located at the both sides up and down of described mover yoke.
3. linear electric motors according to claim 1, is characterized in that, described slide block is fixedly connected with mover yoke by soket head cap screw.
4. linear electric motors according to claim 1, it is characterized in that, described stator comprises two groups of stator yoke corresponding with the opening of described U-shaped structure, connects the fixed head of stator yoke described in two groups and be located at the line slideway of the relative side of described stator yoke, described in two groups, stator yoke is equipped with some stator tooths relative to side, coil windings is provided with between described stator tooth, described slide block and described line slideway are slidably connected, and described air gap is between described stator tooth and magnet array.
5. linear electric motors according to claim 4, is characterized in that, described coil windings is fixed by slot wedge and described stator tooth.
6. linear electric motors according to claim 4, is characterized in that, described coil windings is electrically connected with three-phase alternating current.
7. linear electric motors according to claim 1, is characterized in that, described fixed head, stator yoke and stator tooth are made up of non-magnet material.
8. the linear electric motors according to any one of claim 1 or 7, is characterized in that, described non-magnet material is aluminium.
9. linear electric motors according to claim 1, is characterized in that, the quantity often organizing Halbach unit in described magnet array is one.
10. linear electric motors according to claim 1, it is characterized in that, described Halbach unit is made up of three block permanent magnets, described three block permanent magnets are followed successively by the first magnet, second magnet and the 3rd magnet or be followed successively by the 3rd magnet, second magnet and the first magnet, described first magnet and the 3rd magnet are T-shaped along the cross section of XY plane, and the direction of magnetization of the first magnet is along Y-axis forward, the direction of magnetization of the 3rd magnet is along Y-axis negative sense, described second magnet is inverted T shape along the cross section of XY plane, and the direction of magnetization of the second magnet is along X-axis negative sense, in magnet array described in two groups, the ordering of permanent magnet is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394782.1U CN204794640U (en) | 2015-06-09 | 2015-06-09 | Linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394782.1U CN204794640U (en) | 2015-06-09 | 2015-06-09 | Linear motor |
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| CN204794640U true CN204794640U (en) | 2015-11-18 |
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| CN201520394782.1U Expired - Fee Related CN204794640U (en) | 2015-06-09 | 2015-06-09 | Linear motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040109A (en) * | 2017-06-15 | 2017-08-11 | 北京航空航天大学 | Magneto torque-motor based on Halbach array |
| CN107659109A (en) * | 2017-10-11 | 2018-02-02 | 常州汉姆电机有限公司 | Linear stepping motor |
| CN108023460A (en) * | 2018-02-02 | 2018-05-11 | 上海莫戈纳机电科技有限公司 | Linear electric machine |
| CN109167446A (en) * | 2018-09-12 | 2019-01-08 | 苏州直为精驱控制技术有限公司 | High thrust linear motor |
| CN111649873A (en) * | 2020-05-28 | 2020-09-11 | 佛山市声硕科技有限公司 | Linear motor stator height unbalance fault diagnosis method based on statistical analysis |
| CN112593332A (en) * | 2020-10-19 | 2021-04-02 | 武汉纺织大学 | Gripper projectile stopping device and method for ultra wide web shuttle loom |
| CN112615512A (en) * | 2020-12-18 | 2021-04-06 | 山东科技大学 | Magnetic suspension Z-axis linear motor of chip mounter |
-
2015
- 2015-06-09 CN CN201520394782.1U patent/CN204794640U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040109A (en) * | 2017-06-15 | 2017-08-11 | 北京航空航天大学 | Magneto torque-motor based on Halbach array |
| CN107040109B (en) * | 2017-06-15 | 2019-10-18 | 北京航空航天大学 | Magneto torque-motor based on Halbach array |
| CN107659109A (en) * | 2017-10-11 | 2018-02-02 | 常州汉姆电机有限公司 | Linear stepping motor |
| CN107659109B (en) * | 2017-10-11 | 2023-09-08 | 常州汉姆智能科技有限公司 | Linear stepping motor |
| CN108023460A (en) * | 2018-02-02 | 2018-05-11 | 上海莫戈纳机电科技有限公司 | Linear electric machine |
| CN109167446A (en) * | 2018-09-12 | 2019-01-08 | 苏州直为精驱控制技术有限公司 | High thrust linear motor |
| CN111649873A (en) * | 2020-05-28 | 2020-09-11 | 佛山市声硕科技有限公司 | Linear motor stator height unbalance fault diagnosis method based on statistical analysis |
| CN112593332A (en) * | 2020-10-19 | 2021-04-02 | 武汉纺织大学 | Gripper projectile stopping device and method for ultra wide web shuttle loom |
| CN112615512A (en) * | 2020-12-18 | 2021-04-06 | 山东科技大学 | Magnetic suspension Z-axis linear motor of chip mounter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |