CN210390625U - Active magnetic suspension wheel - Google Patents
Active magnetic suspension wheel Download PDFInfo
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- CN210390625U CN210390625U CN201920729389.1U CN201920729389U CN210390625U CN 210390625 U CN210390625 U CN 210390625U CN 201920729389 U CN201920729389 U CN 201920729389U CN 210390625 U CN210390625 U CN 210390625U
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- 239000000725 suspension Substances 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 238000005339 levitation Methods 0.000 claims description 8
- 238000013016 damping Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 230000004323 axial length Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an initiative magnetic suspension wheel relates to traffic, vehicle field, can replace current suspension system structure with the magnetic bearing structure, has avoided mechanical friction, reduces energy loss. The utility model discloses a: radial magnetic bearing stator, radial magnetic bearing rotor, axial magnetic bearing stator, axial magnetic bearing rotor, central shaft, sleeve, flange plate, wheel hub. The structure enables the radial magnetic bearing stator and the vehicle chassis to be stably suspended in the air through electromagnetic force, and eliminates the friction loss of the traditional bearing. And the air gap between the radial stator and the radial rotor is much larger than that of a common magnetic bearing, reaches several millimeters, and can replace a spring and a damper of a traditional suspension by electromagnetic suspension force so as to realize the inhibition of vehicle body jolt and the change of damping characteristics in the driving process of a vehicle by an active control method.
Description
Technical Field
The invention relates to the field of traffic and vehicles, in particular to an active magnetic suspension wheel.
Background
Although the motor replaces a fuel engine, the traditional chassis structure is still kept, the structure is complex and the efficiency is low.
Suspension system in current chassis is numerous in kind, the structure is complicated, in order to reach the travelling comfort or the motility of hopeing, often need carry out a large amount of manmade adjustments to spring hardness, attenuator characteristic, and this is not only very loaded down with trivial details in the design production stage, and the driver also can't carry out convenient control in the vehicle use.
Disclosure of Invention
The invention provides an active magnetic suspension wheel, which can replace the existing suspension system structure with a magnetic bearing structure, avoid mechanical friction and reduce energy loss.
In order to achieve the purpose, the invention adopts the following technical scheme:
an active magnetic levitation vehicle wheel comprising: the device comprises a hub, a flange, an axial magnetic bearing rotor, an axial magnetic bearing stator, a radial magnetic bearing rotor, a radial magnetic bearing stator, a central shaft and a sleeve. The axial magnetic bearing rotor comprises a left axial magnetic bearing rotor and a right axial magnetic bearing rotor, and the axial magnetic bearing stator comprises a left axial magnetic bearing stator and a right axial magnetic bearing stator.
The right end of the central shaft is connected with a chassis of the vehicle, the left end of the central shaft penetrates through the flange plate, and the flange plate is connected with the hub. The periphery of the central shaft is provided with a sleeve, the central shaft is in interference fit with the sleeve, a radial magnetic bearing stator is arranged in the radial direction of the sleeve, and a radial magnetic bearing rotor is arranged on the periphery of the radial magnetic bearing stator. The two axial ends of the sleeve are respectively provided with a left axial magnetic bearing stator and a right axial magnetic bearing stator, the outer side of the left axial magnetic bearing stator is provided with a left axial magnetic bearing rotor, and the outer side of the right axial magnetic bearing stator is provided with a right axial magnetic bearing rotor. The left axial magnetic bearing rotor and the right axial magnetic bearing rotor are respectively connected with the radial magnetic bearing rotor, and the left axial magnetic bearing rotor is also connected with a flange.
Furthermore, a sensor support is arranged on the chassis, and a distance measuring sensor is arranged on the chassis and used for measuring the distance between the distance measuring sensor and the right axial magnetic bearing rotor along the radial direction of the central shaft.
Furthermore, a distance measuring sensor is arranged on the left axial magnetic bearing stator to measure the distance between the distance measuring sensor and the left axial magnetic bearing rotor.
Further, the radial magnetic bearing stator is composed of a coil, pure iron clamping plates, bolts, silicon steel sheets and nuts, wherein the pure iron clamping plates are arranged on two sides of the radial stator silicon steel sheets, and the bolts penetrate through the clamping plates and the silicon steel sheets and are connected with the nuts to clamp the clamping plates and the radial stator silicon steel sheets tightly. And the pure iron clamping plate and the periphery of the silicon steel sheet are wound with coils and sleeved on each magnetic pole.
Further, the radial magnetic bearing stator has 16 magnetic poles.
Furthermore, the radial magnetic bearing rotor consists of a shell, an end cover and a radial rotor silicon steel sheet, wherein the shell is arranged outside the radial rotor silicon steel sheet, and one end of the shell is tightly pressed and fixed by the end cover.
Furthermore, the left end and the right end of the central shaft are both provided with protective bearings.
The working principle of the invention is as follows:
the coils in the radial magnetic bearing stator are electrified to generate electromagnetic force on the radial magnetic bearing rotor, and when the electromagnetic attraction force difference between the upper side and the lower side is larger than the total weight of the central shaft and all parts mounted on the central shaft, the central shaft and the chassis are integrally suspended because the radial magnetic bearing rotor and the hub are restrained by the ground.
The radial position sensor detects the distance of the right axial magnetic bearing rotor relative to the radial position sensor, when the relative distance of the upper side is reduced and the relative distance of the lower side is increased, namely, the central shaft moves downwards relative to the rotor together with the chassis, the stator and the sensor, the control system can increase the current in the coil on the upper side of the radial magnetic bearing stator at the moment, the current in the coil on the lower side is reduced, the electromagnetic attraction on the upper side is increased, the electromagnetic attraction on the lower side is reduced, and the central shaft moves upwards relative to the rotor together with the chassis, the stator and the sensor until the central shaft returns to the original suspension.
The coils in the left and right axial magnetic bearing stators are electrified to respectively generate electromagnetic attraction to the left and right axial magnetic bearing rotors, so that the central shaft and the chassis are in a suspension state in the axial direction, and thus, during normal work, the hub rotates together with the radial rotor, the axial rotor and other components, and is not in contact with the central shaft, the radial stator, the axial stator and the like, and mechanical friction is eliminated.
A larger suspension air gap is arranged between the radial stator and the rotor, when a vehicle jolts, the hub can jump up and down, at the moment, the coil current in the radial magnetic bearing stator can be actively changed, and the magnetic force on the upper side and the lower side of the rotor is controlled to reduce the jumping amplitude and the acceleration of the stator, so that the function of replacing the traditional suspension is realized. Different coil current control strategies are adopted, so that different magnetic force change effects can be generated, and the variable damping characteristic of the suspension can be simulated.
The invention has the beneficial effects that:
the invention can replace the suspension system of the existing vehicle, replace the spring with the electromagnetic suspension force as the bearing medium between chassis of vehicle body and the wheel nave, while encountering jolting, change the characteristic of the current change in the electromagnetic coil through different control algorithms, in order to realize the different output characteristics of the radial magnetic pole, carry on the function of realizing adjustable damping characteristic; and no mechanical friction exists between the hub and the central shaft, no lubrication is needed, and the energy loss is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a radial magnetic bearing stator taken radially;
FIG. 3 is a cross-sectional view of a radial magnetic bearing stator taken axially;
FIG. 4 is a cross-sectional view of a radial magnetic bearing rotor.
Wherein, 1-wheel hub, 2-flange plate, 3-protective bearing, 31-left protective bearing, 32-right protective bearing, 4-shaft end retainer ring, 5-bearing seat, 6-axial magnetic bearing rotor, 61-left axial magnetic bearing rotor, 62-right axial magnetic bearing rotor, 7-axial magnetic bearing stator, 71-left axial magnetic bearing stator, 72-right axial magnetic bearing stator, 8-radial magnetic bearing rotor, 9-radial magnetic bearing stator, 10-radial position sensor, 11-radial position sensor support, 12-protective bearing locking nut, 13-chassis, 14-central shaft, 15-axial position sensor, 16-radial magnetic bearing stator locking nut, 17-sleeve, 18-axial adjusting ring, V-shaped groove, V, 181-left axial adjusting ring, 182-right axial adjusting ring, 19-coil, 20-pure iron clamping plate, 21-bolt, 22-radial stator silicon steel sheet, 23-nut, 24-shell, 25-radial rotor silicon steel sheet and 26-end cover.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following detailed description.
An embodiment of the present invention provides an active magnetic levitation vehicle wheel, as shown in fig. 1, including: the device comprises a hub 1, a flange 2, a protective bearing 3, a shaft end retainer ring 4, a protective bearing seat 5, a left axial magnetic bearing rotor 61, a right axial magnetic bearing rotor 62, a left axial magnetic bearing stator 71, a right axial magnetic bearing stator 72, a radial magnetic bearing rotor 8, a radial magnetic bearing stator 9, a radial position sensor 10, a radial sensor support 11, a protective bearing locking nut 12, a central shaft 14, an axial position sensor 15, a radial magnetic bearing stator locking nut 16, a sleeve 17 and an axial adjusting ring 18.
As shown in fig. 2, the radial magnetic bearing stator 9 has 16 magnetic poles, and is composed of a pure iron clamping plate 20, a radial stator silicon steel sheet 22, and a coil 19. The pure iron clamping plates 20 on the two sides clamp a plurality of radial stator silicon steel sheets 22 in the middle, and a tightening force is provided by bolts 21 and nuts 22 distributed on each magnetic pole, wherein the nuts 22 are in interference fit with the pure iron clamping plates 20. In order to fully utilize the space to increase the ampere-turns, the coil 19 is wound into an isosceles trapezoid and sleeved on each magnetic pole of the radial magnetic bearing stator 9.
As shown in fig. 3, the radial magnetic bearing rotor 8 is composed of a housing 24, an end cover 26, and radial rotor silicon steel sheets 25. In order to reduce magnetic leakage, the total axial length of the radial rotor silicon steel sheets 25 is slightly longer than the axial length of the radial magnetic bearing stator 9.
The right end of the central shaft 14 is connected with the chassis 13, the left end of the central shaft passes through a through hole in the center of the flange plate 2, and the flange plate 2 is connected with the hub 1.
A sleeve 17 is arranged outside the central shaft 14, and the central shaft 14 and the sleeve 17 are in interference fit. The radial magnetic bearing stator 9 is arranged on the periphery of the sleeve 17, and a shaft shoulder is arranged on the right side of the sleeve 17 to limit the radial magnetic bearing stator 9 to move rightwards. The radial magnetic bearing stator lock nut 12 is disposed on the periphery of the sleeve 17, on the left side of the radial magnetic bearing stator 9, and limits the axial position of the radial magnetic bearing stator 9 along the central shaft 14. The number of the axial adjusting rings 18 is two, namely a left axial adjusting ring 181 and a right axial adjusting ring 182, the left axial adjusting ring 181 is arranged on the right side of the protective bearing 31, and the axial position of the protective bearing 31 on the central shaft can be adjusted, so that the protective bearing 31, the flange 2 and the axial magnetic bearing rotor 61 keep equal gaps;
the right axial adjustment ring 182 is disposed on the left side of the axial magnetic bearing stator 72, and can adjust the axial position of the right axial magnetic bearing stator 72 on the central axis, so that the left and right axial stators can have appropriate suspension gaps with respect to the rotor.
The periphery of the radial magnetic bearing stator 9 is provided with a radial magnetic bearing rotor 8, the left end and the right end of the radial magnetic bearing rotor 8 are respectively connected with the left axial magnetic bearing rotor 61 and the right axial magnetic bearing rotor 62 through bolts, and the central shaft 14 penetrates through the left axial magnetic bearing rotor 61 and the right axial magnetic bearing rotor 62.
The left end of center pin 14 sets up bearing frame 5, and left protection bearing 31 installs on bearing frame 5, and axle head retaining ring 4 installs at the left end of center pin 14, the restriction left protection bearing 31's position. The left protective bearing 31 is connected with the flange plate 2, and the other end of the flange plate 2 is connected with the hub 1. The left protective bearing 31 is a four-point contact ball bearing, and bears radial and axial forces.
The left axial magnetic bearing stator 71 and the right axial magnetic bearing stator 72 are respectively arranged on the inner sides of the left axial magnetic bearing rotor 61 and the right axial magnetic bearing rotor 62, the left axial magnetic bearing stator 71 is installed on the sleeve 17, and the axial position sensor 15 is also installed on the left axial magnetic bearing stator 71 and used for measuring the distance between the axial position sensor 15 and the radial magnetic bearing stator 9. The left axial magnetic bearing stator 71 is also provided with threaded holes for mounting the hub 1, the diameter of the threaded holes, the number of the threaded holes and the diameter of the central pitch circle are matched with the parameters of the hub 1, and hubs with different specifications can be mounted by changing the diameter of the threaded holes, the number of the threaded holes and the diameter of the central pitch circle.
The right axial magnetic bearing stator 72 is a pure iron material with an annular electromagnetic coil mounted between the pure iron poles. The right axial magnetic bearing stator 72 is sleeved on the central shaft 14 through a right protective bearing 32, and the right protective bearing 32 is a deep groove ball bearing.
The radial position sensor support 11 is installed on the chassis 13, and the radial position sensor 10 is installed on the radial position sensor support 11. The right axial magnetic bearing rotor 62 is provided with a protruding annular ring structure that cooperates with the radial position sensor 10 to detect radial position changes. The outer circumferential surface of the central shaft 14 is provided with an axial groove for arranging the leads of the electromagnetic coil and the sensor.
The invention has the beneficial effects that:
the invention can replace the suspension system of the existing vehicle, replace the spring with the electromagnetic suspension force as the bearing medium between chassis of vehicle body and the wheel nave, while encountering jolting, change the characteristic of the current change in the electromagnetic coil through different control algorithms, in order to realize the different output characteristics of the radial magnetic pole, carry on the function of realizing adjustable damping characteristic; and no mechanical friction exists between the hub and the central shaft, no lubrication is needed, and the energy loss is reduced.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. An active magnetic levitation vehicle wheel, comprising: the device comprises a hub (1), a flange (2), an axial magnetic bearing rotor (6), an axial magnetic bearing stator (7), a radial magnetic bearing rotor (8), a radial magnetic bearing stator (9), a central shaft (14) and a sleeve (17), wherein the axial magnetic bearing rotor (6) comprises a left axial magnetic bearing rotor (61) and a right axial magnetic bearing rotor (62), and the axial magnetic bearing stator (7) comprises a left axial magnetic bearing stator (71) and a right axial magnetic bearing stator (72);
the right end of a central shaft (14) is connected with a chassis (13) of the vehicle, the left end of the central shaft (14) penetrates through the flange plate (2), and the flange plate (2) is connected with the hub (1);
a sleeve (17) is arranged on the periphery of the central shaft (14), the central shaft (14) and the sleeve (17) are in interference fit, a radial magnetic bearing stator (9) is arranged on the sleeve (17) in the radial direction, and a radial magnetic bearing rotor (8) is arranged on the periphery of the radial magnetic bearing stator (9);
a left axial magnetic bearing stator (71) and a right axial magnetic bearing stator (72) are respectively arranged at the two axial ends of the sleeve (17), a left axial magnetic bearing rotor (61) is arranged outside the left axial magnetic bearing stator (71), and a right axial magnetic bearing rotor (62) is arranged outside the right axial magnetic bearing stator (72);
the left axial magnetic bearing rotor (61) and the right axial magnetic bearing rotor (62) are respectively connected with the radial magnetic bearing rotor (8), and the left axial magnetic bearing rotor (61) is also connected with the flange (2).
2. Active magnetic levitation vehicle wheel according to claim 1, wherein a sensor holder is arranged on the chassis (13), and a distance measuring sensor is arranged on the sensor holder.
3. Active magnetic levitation vehicle wheel according to claim 1, wherein a distance measuring sensor is arranged on the left axial magnetic bearing stator (71).
4. The active magnetic suspension wheel as claimed in claim 1, wherein the radial magnetic bearing stator (9) is composed of a coil (19), a pure iron clamping plate (20), a bolt (21), a silicon steel sheet (22) and a nut (23), the pure iron clamping plate (20) is arranged on two sides of the silicon steel sheet (22), the bolt (21) penetrates through the pure iron clamping plate (20) and the radial stator silicon steel sheet (22) and is connected with the nut (23), the coil (19) is wound on the periphery of the pure iron clamping plate (20) and the radial stator silicon steel sheet (22), and the coil (19) is wound into a trapezoid with a wide top and a narrow bottom.
5. Active magnetic levitation wheel according to claim 4, wherein the radial magnetic bearing stator (9) has 16 poles.
6. The active magnetic levitation vehicle wheel as claimed in claim 1, wherein the radial magnetic bearing rotor (8) is composed of a housing (24), an end cap (26) and a radial rotor silicon steel sheet (25), the housing (24) is arranged outside the radial rotor silicon steel sheet (25), and one end of the housing (24) is pressed and fixed by the end cap (26).
7. Active magnetic levitation vehicle wheel according to claim 1, characterized in that the central shaft (14) is provided with protective bearings at both left and right ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729389.1U CN210390625U (en) | 2019-05-20 | 2019-05-20 | Active magnetic suspension wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729389.1U CN210390625U (en) | 2019-05-20 | 2019-05-20 | Active magnetic suspension wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210390625U true CN210390625U (en) | 2020-04-24 |
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ID=70346630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920729389.1U Active CN210390625U (en) | 2019-05-20 | 2019-05-20 | Active magnetic suspension wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210390625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271366A (en) * | 2019-05-20 | 2019-09-24 | 南京航空航天大学 | A kind of active magnetic wheel |
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2019
- 2019-05-20 CN CN201920729389.1U patent/CN210390625U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271366A (en) * | 2019-05-20 | 2019-09-24 | 南京航空航天大学 | A kind of active magnetic wheel |
| CN110271366B (en) * | 2019-05-20 | 2024-03-29 | 南京航空航天大学 | Active magnetic suspension wheel |
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